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404 results on '"Universidad de Concepción - University of Concepcion [Chile]"'

1. Turmeric and Its Major Compound Curcumin on Health: Bioactive Effects and Safety Profiles for Food, Pharmaceutical, Biotechnological and Medicinal Applications

Author: Javad Sharifi-Rad, Youssef El Rayess, Alain Abi Rizk, Carmen Sadaka, Raviella Zgheib, Wissam Zam, Simona Sestito, Simona Rapposelli, Katarzyna Neffe-Skocińska, Dorota Zielińska, Bahare Salehi, William N. Setzer, Noura S. Dosoky, Yasaman Taheri, Marc El Beyrouthy, Miquel Martorell, Elise Adrian Ostrander, Hafiz Ansar Rasul Suleria, William C. Cho, Alfred Maroyi, Natália Martins, Instituto de Investigação e Inovação em Saúde, Zabol Medicinal Plants Research Center, Zabol University of Medical Sciences, Department of Agriculture and Food Engineering, School of Engineering, Holy-Spirit University of Kaslik [Jounieh]-Holy-Spirit University of Kaslik [Jounieh], Faculty of Medicine, American University of Beirut [Beyrouth] (AUB), Institut Jean-Pierre Bourgin (IJPB), AgroParisTech-Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Department of Analytical and Food Chemistry, Faculty of Pharmacy, Al-Andalus University for Medical Sciences-Al-Andalus University for Medical Sciences, Department of Pharmacy, University of Pisa - Università di Pisa, Interdepartmental Research Centre for Biology and Pathology of Aging, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences (SGGW), Noncommunicable Diseases Research Center, Bam University of Medical Sciences, Student Research Committee, School of Medicine, Bam University of Medical Sciences-Bam University of Medical Sciences, Aromatic Plant Research Center, Department of Chemistry, University of Alabama in Huntsville (UAH), Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences [Tehran, Iran], Department of Pharmacology and Toxicology, School of Pharmacy, Shahid Beheshti University of Medical Sciences [Tehran, Iran]-Shahid Beheshti University of Medical Sciences [Tehran, Iran], Department of Nutrition and Dietetics, Universidad de Concepción - University of Concepcion [Chile]-Universidad de Concepción - University of Concepcion [Chile], Unidad de Desarrollo Tecnológico, Universidad de Concepción [Chile], Medical Illustration, Kendall College of Art and Design, Ferris State University-Ferris State University, Department of Agriculture and Food Systems, University of Melbourne, Department of Clinical Oncology, Queen Elizabeth Hospital [Hong Kong] (QEH), Department of Botany, University of Fort Hare, Universidade do Porto, Institute for Research and Innovation in Health (i3S), and CONICYT PIA/APOYO CCTE AFB170007Portuguese Foundation for Science and TechnologyUID/BIM/04293/2013NORTE2020 - Northern Regional Operational Program NORTE-01-0145-FEDER-000012
Subjects: 0301 basic medicine, curcuminoids, pharmacological effects, Review, Traditional Chinese medicine, Curcuma longa L, 03 medical and health sciences, Ingredient, chemistry.chemical_compound, Curcuma, Pharmacological effects, spice, 0302 clinical medicine, Curcuminoids, Medicine, Pharmacology (medical), Tissue distribution, biotechnological applications, Biotechnological applications, 2. Zero hunger, Pharmacology, biology, Traditional medicine, business.industry, turmeric, lcsh:RM1-950, curcuma, Curcuma longaL, Turmeric, [SDV.SP]Life Sciences [q-bio]/Pharmaceutical sciences, biology.organism_classification, 3. Good health, Bioavailability, Spice, Food coloring, lcsh:Therapeutics. Pharmacology, 030104 developmental biology, chemistry, 030220 oncology & carcinogenesis, Curcumin, Disease prevention, business
Abstract: Curcumin, a yellow polyphenolic pigment from the Curcuma longa L. (turmeric) rhizome, has been used for centuries for culinary and food coloring purposes, and as an ingredient for various medicinal preparations, widely used in Ayurveda and Chinese medicine. In recent decades, their biological activities have been extensively studied. Thus, this review aims to offer an in-depth discussion of curcumin applications for food and biotechnological industries, and on health promotion and disease prevention, with particular emphasis on its antioxidant, anti-inflammatory, neuroprotective, anticancer, hepatoprotective, and cardioprotective effects. Bioavailability, bioefficacy and safety features, side effects, and quality parameters of curcumin are also addressed. Finally, curcumin’s multidimensional applications, food attractiveness optimization, agro-industrial procedures to offset its instability and low bioavailability, health concerns, and upcoming strategies for clinical application are also covered. This work was supported by CONICYT PIA/APOYO CCTE AFB170007. N. Martins would like to thank the Portuguese Foundation for Science and Technology (FCT-Portugal) for the Strategic project ref. UID/BIM/04293/2013 and "NORTE2020 - Northern Regional Operational Program" (NORTE-01-0145-FEDER-000012).
Published: 2020
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2. Pharmacological inhibition of the F 1 -ATPase/P2Y 1 pathway suppresses the effect of apolipoprotein A1 on endothelial nitric oxide synthesis and vasorelaxation

Author: Paula Honorato, Marcelo González, Cendrine Cabou, Laure Frayssinhes, Bernard Masri, Claudio Aguayo, Valeria Aguilera, Laurent O. Martinez, Thibaut Duparc, Audren Fournel, Marcelo León, Anne Abot, Claude Knauf, Claudia Radojkovic, Guillaume Combes, Luis Briceño, Nicol Parada, Lamia Ghezali, Institut des Maladies Métaboliques et Cardiovasculaires (I2MC), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National de la Santé et de la Recherche Médicale (INSERM), Département de physiologie humaine [UNIV Paul Sabatier, Toulouse] (Faculté de Pharmacie), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Department of Clinical Biochemistry and Immunology [Concepción, Chile] (Faculty of Pharmacy), Universidad de Concepción [Chile], Institut de Recherche en Santé Digestive (IRSD ), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Vétérinaire de Toulouse (ENVT), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut National de la Santé et de la Recherche Médicale (INSERM), Group of Research and Innovation in Vascular Health [Chillan, Chile] (GRIVAS Health), Vascular Physiology Laboratory [Concepción, Chile] (Department of Physiology), Universidad de Concepción [Chile]-Faculty of Biological Sciences [Concepción, Chile], Department of Obstetrics and Gynecology [Concepción, Chile] (Faculty of Medicine), This work was supported by the 'Fondo Nacional de Desarrollo Científico y Tecnológico' (FONDECYT, #11121575, Chile), 'Dirección de Investigación Universidad de Concepción' (DIUC, #210.072.033-1.0, Chile), the French National Research Agency (ANR, #ANR-16-CE18-0014-01, HDLNEXT-THERAPEUTICS) and the 'Région Midi-Pyrénées - Occitanie' (CLE 2015, #14054132). 'INNOVA BIO BIO Chile para Apoyo de Tesis' fellowships were held by P. Honorato (#13.1285-EM.TES) and M. León (#12.127-EM.TES). L. Briceño was supported by 'Comisión Nacional de Investigación Científica y Tecnológica CONICYT-PCHA/Magíster Nacional' (#2014-63566), Chile., ANR-16-CE18-0014,HDL-NEXT-THERAPEUTICS,Nouvelles thérapies du HDL-cholestérol pour les maladies cardiovasculaire.(2016), Institut National de la Recherche Agronomique (INRA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Vétérinaire de Toulouse (ENVT), MARTINEZ, Laurent, Nouvelles thérapies du HDL-cholestérol pour les maladies cardiovasculaire. - - HDL-NEXT-THERAPEUTICS2016 - ANR-16-CE18-0014 - AAPG2016 - VALID, Faculté des Sciences Pharmaceutiques, Universidad de Concepción - University of Concepcion [Chile], and Universidad de Concepción - University of Concepcion [Chile]-Faculty of Biological Sciences [Concepción, Chile]
Subjects: 0301 basic medicine, P2Y receptor, Physiology, ATPase, Vasodilation, 030204 cardiovascular system & hematology, Pharmacology, Nitric oxide, 03 medical and health sciences, chemistry.chemical_compound, 0302 clinical medicine, [SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, nitric oxide, purinergic receptors, Receptor, Physiologie, [SDV.MHEP] Life Sciences [q-bio]/Human health and pathology, biology, F1-ATPase, Chemistry, Purinergic receptor, Apolipoprotein A1, endothelial cells, [SDV.MHEP.CSC] Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, Adenosine diphosphate, 030104 developmental biology, biology.protein, lipids (amino acids, peptides, and proteins), [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Autre (Sciences du Vivant), Lipoprotein
Abstract: C. Radojkovic and L.O. Martinez are co-senior authors.; International audience; AIM:The contribution of apolipoprotein A1 (APOA1), the major apolipoprotein of high-density lipoprotein (HDL), to endothelium-dependent vasodilatation is unclear, and there is little information regarding endothelial receptors involved in this effect. Ecto-F1 -ATPase is a receptor for APOA1, and its activity in endothelial cells is coupled to adenosine diphosphate (ADP)-sensitive P2Y receptors (P2Y ADP receptors). Ecto-F1 -ATPase is involved in APOA1-mediated cell proliferation and HDL transcytosis. Here we investigated the effect of lipid-free APOA1 and the involvement of ecto-F1 -ATPase and P2Y ADP receptors on nitric oxide (NO) synthesis and the regulation of vascular tone.METHOD:NO synthesis was assessed in human endothelial cells from umbilical veins (HUVECs) and isolated mouse aortas. Changes in vascular tone were evaluated by isometric force measurements in isolated human umbilical and placental veins and by assessing femoral artery blood flow in conscious mice.RESULTS:Physiological concentrations of lipid-free APOA1 enhanced endothelial NO synthesis, which was abolished by inhibitors of endothelial nitric oxide synthase (eNOS) and of the ecto-F1 -ATPase/P2Y1 axis. Accordingly, APOA1 inhibited vasoconstriction induced by thromboxane A2 receptor agonist and increased femoral artery blood flow in mice. These effects were blunted by inhibitors of eNOS, ecto-F1 -ATPase and P2Y1 receptor.CONCLUSIONS:Using a pharmacological approach, we thus found that APOA1 promotes endothelial NO production and thereby controls vascular tone in a process that requires activation of the ecto-F1 -ATPase/P2Y1 pathway by APOA1. Pharmacological targeting of this pathway with respect to vascular diseases should be explored. This article is protected by copyright. All rights reserved.
Published: 2019
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3. Deactivation of Pd/C catalysts by irreversible loss of hydrogen spillover ability of the carbon support

Author: Laurent Vanoye, Boris Guicheret, Camila Rivera-Cárcamo, Jérémy Audevard, Javier Navarro-Ruiz, Iker del Rosal, Iann C. Gerber, Cristian H. Campos, Bruno Fernandes Machado, Jérôme Volkman, Régis Philippe, Philippe Serp, Alain Favre-Réguillon, Catalyse, Polymérisation, Procédés et Matériaux (CP2M), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Supérieure de Chimie Physique Électronique de Lyon (CPE)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de chimie de coordination (LCC), Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique et chimie des nano-objets (LPCNO), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Fédération de recherche « Matière et interactions » (FeRMI), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Universidad de Concepción - University of Concepcion [Chile], Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia (LSRE-LCM), Universidade do Porto = University of Porto, Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), and ANR-19-CE07-0030,COMET,Catalyse Coopérative Entre Atomes Et Nanoparticules Métalliques(2019)
Subjects: [CHIM]Chemical Sciences, [CHIM.CATA]Chemical Sciences/Catalysis, Physical and Theoretical Chemistry, Catalysis
Abstract: International audience; General interest in solvent-free catalytic processes is driven by the development of environmentally and economically acceptable procedures. Such processes require the use of highly active and stable catalysts. This study reports on the synthesis, characterization, and kinetic evaluation of two highly active Pd catalysts supported on different carbons support, i.e., multi-walled carbon nanotubes (CNT) and few-layer graphene (FLG). These catalysts, with similar Pd loading (∼2 wt%) and containing both Pd single atoms (PdSA) and nanoparticles (PdNP), were systematically tested for solvent-free total hydrogenation of squalene (SQE) to obtain high-purity squalane (SQA). Thanks to the unique cooperative catalysis between PdSA and PdNP involving H-spillover, the activities of both catalysts were high compared to catalysts described in the literature. Solvent-free total hydrogenation of SQE could be performed under mild conditions (120 °C, 20 bar H2, 4 h) using ultralow Pd loading (60 ppm). However, since this reduction reaction is highly exothermic (ΔHR= − 765 kJ.mol−1), heat management during the reactor operation with these highly active catalysts is crucial to avoid deactivation and thermal runaway. Under these conditions, Pd/FLG was highly active but deactivated, unlike Pd/CNT, which still has high activity, but does not deactivate. Characterizations (ICP, XPS, Raman, TPD-MS, HAADF-STEM) of the Pd/FLG catalyst before and after reaction, supported by calculations based on density functional theory, allowed us to propose a new mechanism of catalyst deactivation involving the chemical reduction of specific surface oxygen groups of the carbon support induced by H-spillover.
Published: 2023
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4. Panta Rhei benchmark dataset

Author: Heidi Kreibich, Kai Schröter, Giuliano Di Baldassarre, Anne F. Van Loon, Maurizio Mazzoleni, Guta Wakbulcho Abeshu, Svetlana Agafonova, Amir AghaKouchak, Hafzullah Aksoy, Camila Alvarez-Garreton, Blanca Aznar, Laila Balkhi, Marlies H. Barendrecht, Sylvain Biancamaria, Liduin Bos-Burgering, Chris Bradley, Yus Budiyono, Wouter Buytaert, Lucinda Capewell, Hayley Carlson, Yonca Cavus, Anaïs Couasnon, Gemma Coxon, Ioannis Daliakopoulos, Marleen C. de Ruiter, Claire Delus, Mathilde Erfurt, Giuseppe Esposito, Didier François, Frédéric Frappart, Jim Freer, Natalia Frolova, Animesh K. Gain, Manolis Grillakis, Jordi Oriol Grima, Diego A. Guzmán, Laurie S. Huning, Monica Ionita, Maxim Kharlamov, Dao Nguyen Khoi, Natalie Kieboom, Maria Kireeva, Aristeidis Koutroulis, Waldo Lavado-Casimiro, Hong-Yi Li, Maria Carmen LLasat, David Macdonald, Johanna Mård, Hannah Mathew-Richards, Andrew McKenzie, Alfonso Mejia, Eduardo Mario Mendiondo, Marjolein Mens, Shifteh Mobini, Guilherme Samprogna Mohor, Viorica Nagavciuc, Thanh Ngo-Duc, Huynh Thi Thao Nguyen, Pham Thi Thao Nhi, Olga Petrucci, Nguyen Hong Quan, Pere Quintana-Seguí, Saman Razavi, Elena Ridolfi, Jannik Riegel, Md Shibly Sadik, Nivedita Sairam, Elisa Savelli, Alexey Sazonov, Sanjib Sharma, Johanna Sörensen, Felipe Augusto Arguello Souza, Kerstin Stahl, Max Steinhausen, Michael Stoelzle, Wiwiana Szalińska, Qiuhong Tang, Fuqiang Tian, Tamara Tokarczyk, Carolina Tovar, Thi Van Thu Tran, Marjolein H. J. van Huijgevoort, Michelle T. H. van Vliet, Sergiy Vorogushyn, Thorsten Wagener, Yueling Wang, Doris E. Wendt, Elliot Wickham, Long Yang, Mauricio Zambrano-Bigiarini, Philip J. Ward, German Research Centre for Geosciences - Helmholtz-Centre Potsdam (GFZ), Uppsala University, Vrije Universiteit Amsterdam [Amsterdam] (VU), University of Houston, Lomonosov Moscow State University (MSU), University of California [Irvine] (UC Irvine), University of California (UC), Istanbul Technical University (ITÜ), Center for Climate and Resilience Research [Conception] ((CR)2), Universidad de Concepción - University of Concepcion [Chile], Operations Department, Barcelona Cicle de l’Aigua, University of Saskatchewan [Saskatoon] (U of S), Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Department of Groundwater Management, Deltares, Delft, University of Birmingham [Birmingham], Agency for the Assessment and Application of Technology, Imperial College London, Interactions Sol Plante Atmosphère (UMR ISPA), Ecole Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine (Bordeaux Sciences Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Water and Climate Risk, and Amsterdam Sustainability Institute
Subjects: Oceanography, Hydrology and Water Resources, [SDE]Environmental Sciences, General Earth and Planetary Sciences, Oceanografi, hydrologi och vattenresurser, SDG 6 - Clean Water and Sanitation
Abstract: As the adverse impacts of hydrological extremes increase in many regions of the world, a better understanding of the drivers of changes in risk and impacts is essential for effective flood and drought risk management and climate adaptation. However, there is currently a lack of comprehensive, empirical data about the processes, interactions and feedbacks in complex human-water systems leading to flood and drought impacts. Here we present a benchmark dataset containing socio-hydrological data of paired events, i.e., two floods or two droughts that occurred in the same area. The 45 paired events occurred in 42 different study areas and cover a wide range of socio-economic and hydro-climatic conditions. The dataset is unique in covering both floods and droughts, in the number of cases assessed, and in the quantity of socio-hydrological data. The benchmark dataset comprises: 1) detailed review style reports about the events and key processes between the two events of a pair; 2) the key data table containing variables that assess the indicators which characterise management shortcomings, hazard, exposure, vulnerability and impacts of all events; 3) a table of the indicators-of-change that indicate the differences between the first and second event of a pair. The advantages of the dataset are that it enables comparative analyses across all the paired events based on the indicators-of-change and allows for detailed context- and location-specific assessments based on the extensive data and reports of the individual study areas. The dataset can be used by the scientific community for exploratory data analyses e.g. focused on causal links between risk management, changes in hazard, exposure and vulnerability and flood or drought impacts. The data can also be used for the development, calibration and validation of socio-hydrological models. The dataset is available to the public through the GFZ Data Services (Kreibich et al. 2023, link for review: https://dataservices.gfz-potsdam.de/panmetaworks/review/923c14519deb04f83815ce108b48dd2581d57b90ce069bec9c948361028b8c85/).
Published: 2023
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5. Observational calibration of the projection factor of Cepheids

Author: Alexandre Gallenne, Richard I. Anderson, Pierre Kervella, J. Breitfelder, Howard E. Bond, Pascal Fouqué, Julien Dailloux, Laszlo Szabados, Grzegorz Pietrzyński, Wolfgang Gieren, Nicolas Nardetto, Antoine Mérand, Boris Trahin, Laboratoire Franco-Chilien d'Astronomie (LFCA), Centre National de la Recherche Scientifique (CNRS)-Universidad de Concepción [Chile]-Pontificia Universidad Católica de Chile (UC)-Universidad de Chile-Institut national des sciences de l'Univers (INSU - CNRS), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Pennsylvania State University (Penn State), Penn State System, European Southern Observatory (ESO), Konkoly Observatory, Research Centre for Astronomy and Earth Sciences [Budapest], Hungarian Academy of Sciences (MTA)-Hungarian Academy of Sciences (MTA), Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO), Johns Hopkins University (JHU), Observatoire Astronomique de l'Université de Genève (ObsGE), Université de Genève (UNIGE), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Canada-France-Hawaii Telescope Corporation (CFHT), National Research Council of Canada (NRC)-Centre National de la Recherche Scientifique (CNRS)-University of Hawai'i [Honolulu] (UH), Universidad de Concepción [Chile], Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Copernicus Astronomical Center of the Polish Academy of Sciences (CAMK), Polish Academy of Sciences (PAN), ANR-15-CE31-0012,UnlockCepheids,Libérer le potentiel des Céphéides comme étalons primaires de distance(2015), European Project: 695099,CEPBIN, Universidad de Chile = University of Chile [Santiago] (UCHILE)-Pontificia Universidad Católica de Chile (UC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Universidad de Concepción - University of Concepcion [Chile], Université de Genève = University of Geneva (UNIGE), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Universidad de Concepción - University of Concepcion [Chile], Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Universidad de Concepción [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Universidad de Chile, Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Université Fédérale Toulouse Midi-Pyrénées-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Nice Sophia Antipolis (... - 2019) (UNS), and Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Length scale, Nebula, 010308 nuclear & particles physics, Cepheid variable, Stars: variables: Cepheids, [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], FOS: Physical sciences, Stars: individual: RS Pup, Astronomy and Astrophysics, Astrophysics, 01 natural sciences, Galaxy, Photometry (optics), Stars, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, Long period, 0103 physical sciences, Cosmology: distance scale, Techniques: interferometric, Stars: distances, 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), Techniques: photometric
Abstract: The projection factor (p-factor) is an essential component of the classical Baade-Wesselink (BW) technique, that is commonly used to determine the distances to pulsating stars. It is a multiplicative parameter used to convert radial velocities into pulsational velocities. As the BW distances are linearly proportional to the p-factor, its accurate calibration for Cepheids is of critical importance for the reliability of their distance scale. We focus on the observational determination of the p-factor of the long-period Cepheid RS Pup (P = 41.5 days). This star is particularly important as this is one of the brightest Cepheids in the Galaxy and an analog of the Cepheids used to determine extragalactic distances. An accurate distance of 1910 +/- 80 pc (+/- 4.2%) has recently been determined for RS Pup using the light echoes propagating in its circumstellar nebula. We combine this distance with new VLTI/PIONIER interferometric angular diameters, photometry and radial velocities to derive the p-factor of RS Pup using the code Spectro-Photo-Interferometry of Pulsating Stars (SPIPS). We obtain p = 1.250 +/- 0.064 (+/-5.1%), defined for cross-correlation radial velocities. Together with measurements from the literature, the p-factor of RS Pup confirms the good agreement of a constant p = 1.293 +/- 0.039 (+/-3.0%) model with the observations. We conclude that the p-factor of Cepheids is constant or mildly variable over a broad range of periods (3.7 to 41.5 days)., 17 pages, 15 figures, Astronomy & Astrophysics, in press
Published: 2017
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6. Seasonal variability of the OMZ off Peru in a high-resolution regional coupled model

Author: Dewitte, Boris, Montes, Ivonne, Garcon, Veronique, Ramos, Marcel, Paulmier, Aurélien, Pizarro, Oscar, Vergara, Oscar, Schelker, J., Sponseller, R., Ring, E., Högbom, L., Löfgren, S., Laudon, H., Laboratoire d'Etudes en Géophysique et Océanographie Spatiales (LEGOS NOUMEA), Institut national des sciences de l'Univers (INSU - CNRS)-Institut de recherche pour le développement [IRD] : UR065-Centre National de la Recherche Scientifique (CNRS), Helmholtz Centre for Ocean Research [Kiel] (GEOMAR), Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Université Fédérale Toulouse Midi-Pyrénées-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Inria Chile, Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Universidad de Concepción [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM), Departamento de Geofísica,Centro de Investigación Oceanográfica en el Pacífico Sur-Oriental/Programa Regional de Oceanografía Física y Clima (DGEO), Universidad de Concepción [Chile], Insitute for Environmental Assessment, Swedish University of Agricultural Sciences (SLU), Department of Ecology and Environmental Science [Umeå], Umeå University, Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut de recherche pour le développement [IRD] : UR065, Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad Adolfo Ibáñez [Santiago]-Pontificia Universidad Católica de Valparaíso (PUCV)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Chile (UC)-Universidad de Concepción [Chile]-Universidad de la frontera [Chile]-Universidad Diego Portales [Santiago] (UDP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad de Concepción - University of Concepcion [Chile], and Universidad de Concepción - University of Concepcion [Chile]
Subjects: [SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere
Abstract: International audience; TS2 In addition to being one of the most productive upwelling systems, the oceanic region off Peru is embedded in one of the most extensive oxygen minimum zones (OMZs) of the world ocean. The dynamics of the OMZ off Peru remain uncertain, partly due to the scarcity of data and 5 to the ubiquitous role of mesoscale activity on the circulation and biogeochemistry. Here we use a high-resolution coupled physical/biogeochemical model simulation to investigate the seasonal variability of the OMZ off Peru. The focus is on characterizing the seasonal cycle in dissolved O 2 (DO) eddy 10 flux at the OMZ boundaries, including the coastal domain, viewed here as the eastern boundary of the OMZ, considering that the mean DO eddy flux in these zones has a significant contribution to the total DO flux. The results indicate that the seasonal variations of the OMZ can be interpreted 15 as resulting from the seasonal modulation of the mesoscale activity. Along the coast, despite the increased seasonal low DO water upwelling, the DO peaks homogeneously over the water column and within the Peru Undercurrent (PUC) in austral winter, which results from mixing associated with the 20 increase in both the intraseasonal wind variability and baro-clinic instability of the PUC. The coastal ocean acts therefore as a source of DO in austral winter for the OMZ core, through eddy-induced offshore transport that is also shown to peak in austral winter. In the open ocean, the OMZ can be di-25 vided vertically into two zones: an upper zone above 400 m, where the mean DO eddy flux is larger on average than the mean seasonal DO flux and varies seasonally, and a lower part, where the mean seasonal DO flux exhibits vertical-zonal propagating features that share similar characteristics 30 than those of the energy flux associated with the annual ex-tratropical Rossby waves. At the OMZ meridional boundaries where the mean DO eddy flux is large, the DO eddy flux has also a marked seasonal cycle that peaks in austral winter (spring) at the northern (southern) boundary. In the 35 model, the amplitude of the seasonal cycle is 70 % larger at the southern boundary than at the northern boundary. Our results suggest the existence of distinct seasonal regimes for the ventilation of the OMZ by eddies at its boundaries. Implications for understanding the OMZ variability at longer 40 timescales are discussed.
Published: 2016
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7. REVISITING THE ROBUSTNESS OF THE MULTISCALE HYBRID-MIXED METHOD: THE FACE-BASED STRATEGY

Author: Paredes, Diego, Valentin, Frederic, Versieux, Henrique, Universidad de Concepción - University of Concepcion [Chile], Laboratorio Nacional de Computação Cientifica [Rio de Janeiro] (LNCC / MCT), Modélisation et méthodes numériques pour le calcul d'interactions onde-matière nanostructurée (ATLANTIS), Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire Jean Alexandre Dieudonné (LJAD), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), and Universidade Federal de Minas Gerais (UFMG)
Subjects: [MATH.MATH-NA]Mathematics [math]/Numerical Analysis [math.NA]
Abstract: This work proposes a new finite element for the mixed multiscale hybrid method (MHM) applied to the Poisson equation with highly oscillatory coefficients. Unlike the original MHM method, multiscale bases are the solution to local Neumann problems driven by piecewise continuous polynomial interpolation on the skeleton faces of the macroscale mesh. As a result, we prove the optimal convergence of MHM by refining the face partition and leaving the mesh of macroelements fixed. This property allows the MHM method to be resonance free under the usual assumptions of local regularity. The numerical analysis of the method also revisits and complements the original approach proposed by D. Paredes, F. Valentin and H. Versieux (2017). A numerical experiment evaluates the new theoretical results.
Published: 2023

8. Archaeological Mortar Characterization Using Laser-Induced Breakdown Spectroscopy (LIBS) Imaging Microscopy

Author: Sarah Richiero, Claudio Sandoval, Christine Oberlin, Anne Schmitt, Jean-Claude Lefevre, Amina Bensalah-Ledoux, Daniel Prigent, Catherine Coquidé, Antoine Valois, Federico Giletti, Frédéric Pelascini, Ludovic Duponchel, Philippe Dugourd, Clothilde Comby-Zerbino, Vincent Motto-Ros, Institut Lumière Matière [Villeurbanne] (ILM), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Archéologie et Archéométrie (ArAr), Université Lumière - Lyon 2 (UL2)-Université Claude Bernard Lyon 1 (UCBL), Universidad de Concepción - University of Concepcion [Chile], Matériaux et nanostructures photoniques (MNP), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Direction Régionale des Affaires Culturelles Pays de la Loire (DRAC - Pays de la Loire), Ministère de la Culture et de la Communication (MCC), Institut national de recherches archéologiques préventives (Inrap), University of Naples Federico II = Università degli studi di Napoli Federico II, Cetim Grand Est [Illkirch-Gra!enstaden], Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 (LASIRE), Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), and Spectrométrie des biomolécules et agrégats (SPECTROBIO)
Subjects: [PHYS]Physics [physics], [SPI]Engineering Sciences [physics], elemental imaging, archaeological characterization, [CHIM]Chemical Sciences, Lime mortar, micro-laser-induced breakdown spectroscopy, Instrumentation, Spectroscopy
Abstract: International audience; Lime mortar is a complex mixture resulting from hardening of lime, water, and aggregates. Lime mortar was used from the time of the Roman Empire until the Industrial Revolution. The recipes used differ according to the period, geographical area of preparation, craftsman, or function. This is why the study of archaeological mortars is of such great importance in building archaeology. In this study, we used laser-induced breakdown spectroscopy (LIBS) to characterize the elemental composition of three lime mortar samples with a µ-LIBS instrument, allowing elemental image compilation. These samples originate from three different geographical locations: Angers (France), Dardilly (France), and Pompeii (Italy), and were taken from buildings that had different functions: cathedral, aqueduct, and house, respectively. Thanks to image processing and the creation of masks, it was possible to extract not only the lime signature and nature of the aggregate but also its granulometry and circularity. All this information is essential for cultural heritage research. This study shows the potential of the LIBS technique in archaeometric analysis of archaeological mortars.
Published: 2022
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9. Evaluating future climate change exposure of marine habitat in the South East Pacific based on metabolic constraints

Author: Parouffe, Alexandra, Garçon, Véronique, Dewitte, Boris, Paulmier, Aurélien, Montes, Ivonne, Parada, Carolina, Mecho, Ariadna, Veliz, David, Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Climat, Environnement, Couplages et Incertitudes [Toulouse] (CECI), Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique (CERFACS)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Centro de Estudios Avanzados en Zonas Aridas (CEAZA), Millennium Nucleus Center for Ecology and Sustainable Management of Oceanic Island (ESMOI), Universidad Católica del Norte [Antofagasta], Instituto Geofísico del Perú (IGP), Universidad de Concepción - University of Concepcion [Chile], Modelling the Earth Response to Multiple Anthropogenic Interactions and Dynamics (MERMAID), Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Universidad de Chile = University of Chile [Santiago] (UCHILE), and European Project: 869300,FutureMARES
Subjects: Global and Planetary Change, climate velocities, metabolic index, oxygen minimum zone, [SDE.MCG]Environmental Sciences/Global Changes, deoxygenation, Ocean Engineering, South East Pacific, Aquatic Science, Oceanography, Water Science and Technology
Abstract: IntroductionOn-going climate change is now recognized to yield physiological stresses on marine species, with potentially detrimental effects on ecosystems. Here, we evaluate the prospect of using climate velocities (CV) of the metabolic index (Φ) for assessing changes in habitat in the South East Pacific.MethodsOur approach is based on a species with mean ecophysiotype (i.e. model species) and the use of a global Earth System Model simulation (CESM-LE) under RCP 8.5 scenario. The SEP is chosen as a case study as it hosts an Oxygen Minimum Zone and seamounts systems sustaining local communities through artisanal fisheries.Results and DiscussionOur results indicate that CVΦ pattern is mainly constrained by the oxygen distribution and that its sign is affected by contrasting oxygen trends (including a re-oxygenation in the upper OMZ) and warming. We further show that CVΦ is weakly dependent on physiological traits composing Φ, which conveys to this metrics some value for inferring the projected mean displacement and potential changes in viability of metabolic habitat in a region where physiological data are scarce. Based on sensitivity experiments to physiological traits and natural variability, we propose a general method for inferring broad areas of climate change exposure regardless of species-specific Φ. We show in particular that for the model used here, the upper OMZ region can be considered a “safe” area for the species with ecophysiotype close to that of 71 species used to derive the model species. Limitations of the approach and perspectives of this work are also discussed.
Published: 2023
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10. Numerical comparison of nonlocal macroscopic models of multi-population pedestrian flows with anisotropic kernel

Author: Goatin, Paola, Inzunza, Daniel, Villada, Luis Miguel, Analysis and Control of Unsteady Models for Engineering Sciences (ACUMES), Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), Laboratoire Jean Alexandre Dieudonné (LJAD), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), Université Côte d'Azur (UCA), Universidad del Bio Bio [Concepción] (UBB), Centro de Investigación en Ingeniería Matemática [Concepción] (CI²MA), Universidad de Concepción - University of Concepcion [Chile], Inria Associated Team 'NOLOCO - Efficient numerical schemes for non-local transport phenomena' (2018-2022), MATH-Amsud 22-MATH-05 'NOTION - NOn-local conservaTION laws for engineering, biological and epidemiological applications: theoretical and numerical' (2022-2023), and ANR-19-P3IA-0002,3IA@cote d'azur,3IA Côte d'Azur(2019)
Subjects: [MATH]Mathematics [math]
Abstract: We propose three variants of a nonlocal macroscopic pedestrian flow model accounting for anisotropic interactions between different groups and including the presence of walls or other obstacles in the walking domain. We compare the solutions behaviour in the case of bi-directional flows and othogonally crossing flows by numerical simulation based on high order finite difference schemes.
Published: 2023

11. A cheap and easy-to-implement upwind scheme for second order traffic flow models

Author: Würth, Alexandra, Goatin, Paola, Villada, Luis Miguel, Analysis and Control of Unsteady Models for Engineering Sciences (ACUMES), Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), Laboratoire Jean Alexandre Dieudonné (LJAD), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), Université Côte d'Azur (UCA), Universidad del Bio Bio [Concepción] (UBB), Centro de Investigación en Ingeniería Matemática [Concepción] (CI²MA), Universidad de Concepción - University of Concepcion [Chile], Inria Associated Team 'NOLOCO - Efficient numerical schemes for non-local transport phenomena' (2018-2022), MATH-Amsud 22-MATH-05 'NOTION - NOn-local conservaTION laws for engineering, biological and epidemiological applications: theoretical and numerical' (2022-2023), and ANR-19-P3IA-0002,3IA@cote d'azur,3IA Côte d'Azur(2019)
Subjects: [MATH]Mathematics [math]
Abstract: We extend the finite volume numerical scheme proposed by Hilliges and Weidlich [11] to second order traffic flow models consisting in 2 × 2 systems of non strictly hyperbolic conservation laws of Temple class. The scheme is shown to satisfy some maximum principle properties on the density. We provide numerical tests illustrating the behaviour at vacuum and the gain in computational time when dealing with optimization algorithms.
Published: 2023

12. Medium-term acoustic monitoring of small cetaceans in Patagonia, Chile

Author: Patris, Julie, Malige, Franck, Hamame, Madeleine, Glotin, Hervé, Barchasz, Valentin, Gies, Valentin, Marzetti, Sebastian, Buchan, Susannah, Laboratoire d'Informatique et Systèmes (LIS), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Centro de Investigación en Ecosistemas de la Patagonia (CIEP), Scientific Microsystems for Internet of Things (SMIoT), Université de Toulon (UTLN), Centro de Investigación Oceanográfica en el Pacífico Sur Oriental (COPAS), Universidad de Concepción - University of Concepcion [Chile], Centro de Estudios Avanzados en Zonas Aridas (CEAZA), and ANR-21-CE04-0020,ULP-COCHLEA,Cochlée 3D, Intelligente et ultra basse consommation(2021)
Subjects: [SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph], C-POD, [SDE.IE]Environmental Sciences/Environmental Engineering, Coastal small cetaceans, Remote sensing, Bioacoustics, Patagonian ecosystem, Chilean dolphin, [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography
Abstract: International audience; Coastal dolphins and porpoises such as the Chilean dolphin ( Cephalorhynchus eutropia ), the Peale’s dolphin ( Lagenorhynchus australis ), and the Burmeister’s porpoise ( Phocoena spinipinnis ) inhabit the remote areas of Chilean Patagonia. Human development is growing fast in these parts and may constitute a serious threat to such poorly known species. It is thus urgent to develop new tools to try and study these cryptic species and find out more about their behavior, population levels, and habits. These odontocetes emit narrow-band high-frequency (NBHF) clicks and efforts have been made to characterize precisely their acoustic production. Passive acoustic monitoring is a common way to study these animals. Nevertheless, as the signal frequency is usually higher than 100 kHz, storage problems are acute and do not allow for long-term monitoring. The solutions for recording NBHF clicks are usually twofold: either short duration, opportunistic recording from a small boat in presence of the animals (short-term monitoring) or long-term monitoring using devices including a click detector and registering events rather than sound. We suggest, as another possibility, medium-term monitoring, arguing that today’s devices have reached a level of performance allowing for a few days of continual recording even at these extremely high frequencies and in difficult conditions, combined with a long-term click detector. As an example, during 2021, we performed a quasi-continuous recording for one week with the Qualilife High-Blue recorder anchored in a fjord near Puerto Cisnes, Region de Aysen, Chile. We detected more than 13,000 clicks, grouped in 22 periods of passing animals. Our detected clicks are quite similar to precedent results but, due to the large number of clicks recorded, we find a larger variability of parameters. Several rapid sequences of clicks (buzz) were found in the recordings and their features are consistent with previous studies: on average they have a larger bandwidth and a lower peak frequency than the usual clicks. We also installed in the same place a click detector (C-POD) and the two devices compare well and show the same number and duration of periods of animals presence. Passages of odontocetes were happening on average each three hours. We thus confirm the high site fidelity for the species of dolphins emitting NBHF clicks present in this zone. Finally, we confirm that the combined use of recording and detection devices is probably a good alternative to study these poorly known species in remote areas.
Published: 2023
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13. A web-based dashboard for the high-level monitoring of ALMA

Author: Fernando del Campo, Luis Veliz, G. Filippi, Emmanuel Pietriga, Jorge Ibsen, Inria Chile, Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Universidad de Concepción [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM), MassData, Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Universidad de Concepción [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Universidad de Concepción [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM), Joint ALMA Observatory (JAO), National Radio Astronomy Observatory (NRAO)-European Southern Observatory (ESO), Contrat industriel avec radio-observatoire ALMA., SPIE, Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad de Concepción - University of Concepcion [Chile], Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad de Concepción - University of Concepcion [Chile]-Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad de Concepción - University of Concepcion [Chile], and European Southern Observatory (ESO)-National Radio Astronomy Observatory (NRAO)
Subjects: Computer science, business.industry, Dashboard (business), 020207 software engineering, Timeline, 02 engineering and technology, Visualization, World Wide Web, 020204 information systems, 0202 electrical engineering, electronic engineering, information engineering, Table (database), Web application, [INFO.INFO-HC]Computer Science [cs]/Human-Computer Interaction [cs.HC], Line (text file), business
Abstract: International audience; The ALMA radio-telescope's operations depend on the availability of high-level, easy-to-understand status information about all of its components. The ALMA Dashboard aims at providing an all-in-one-place near-real-time overview of the observatory's key elements and figures to both line and senior management. The Dashboard covers a wide range of elements beyond antennas, such as pads, correlator and central local oscillator. Data can be displayed in multiple ways, including: a table view, a compact view fitting on a single screen, a timeline showing detailed information over time, a logbook, a geographical map.
Published: 2014
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14. A wide-orbit giant planet in the high-mass b Centauri binary system

Author: Markus Janson, Raffaele Gratton, Laetitia Rodet, Arthur Vigan, Mickaël Bonnefoy, Philippe Delorme, Eric E. Mamajek, Sabine Reffert, Lukas Stock, Gabriel-Dominique Marleau, Maud Langlois, Gaël Chauvin, Silvano Desidera, Simon Ringqvist, Lucio Mayer, Gayathri Viswanath, Vito Squicciarini, Michael R. Meyer, Matthias Samland, Simon Petrus, Ravit Helled, Matthew A. Kenworthy, Sascha P. Quanz, Beth Biller, Thomas Henning, Dino Mesa, Natalia Engler, Joseph C. Carson, University of Zurich, Janson, Markus, Stockholm University, INAF - Osservatorio Astronomico di Padova (OAPD), Istituto Nazionale di Astrofisica (INAF), Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), Centre National d'Études Spatiales [Toulouse] (CNES)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France -Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Landessternwarte Königstuhl [ZAH] (LSW), Universität Heidelberg [Heidelberg] = Heidelberg University, Institut für Astronomie und Astrophysik [Tübingen] (IAAT), Eberhard Karls Universität Tübingen = Eberhard Karls University of Tuebingen, Physikalisches Institut [Bern], Universität Bern [Bern] (UNIBE), Max-Planck-Institut für Astronomie (MPIA), Max-Planck-Gesellschaft, Centre de Recherche Astrophysique de Lyon (CRAL), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Franco-Chilien d'Astronomie (LFCA), Universidad de Chile = University of Chile [Santiago] (UCHILE)-Pontificia Universidad Católica de Chile (UC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Universidad de Concepción - University of Concepcion [Chile], Universität Zürich [Zürich] = University of Zurich (UZH), Leiden Observatory [Leiden], Universiteit Leiden, SUPA School of Physics and Astronomy [Edinburgh], University of Edinburgh, and Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich)
Subjects: Earth and Planetary Astrophysics (astro-ph.EP), 1000 Multidisciplinary, astro-ph.SR, Multidisciplinary, 530 Physics, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics - Earth and planetary astrophysics, Astrophysics - solar and stellar astrophysics, [SDU]Sciences of the Universe [physics], 10231 Institute for Computational Science, astro-ph.EP, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics, Solar and Stellar Astrophysics (astro-ph.SR)
Abstract: Planet formation occurs around a wide range of stellar masses and stellar system architectures. An improved understanding of the formation process can be achieved by studying it across the full parameter space, particularly toward the extremes. Earlier studies of planets in close-in orbits around high-mass stars have revealed an increase in giant planet frequency with increasing stellar mass until a turnover point at 1.9 solar masses, above which the frequency rapidly decreases. This could potentially imply that planet formation is impeded around more massive stars, and that giant planets around stars exceeding 3 solar masses may be rare or non-existent. However, the methods used to detect planets in small orbits are insensitive to planets in wide orbits. Here we demonstrate the existence of a planet at 560 times the Sun-Earth distance from the 6-10 solar mass binary b Centauri through direct imaging. The planet-to-star mass ratio of 0.10-0.17% is similar to the Jupiter-Sun ratio, but the separation of the detected planet is ~100 times wider than that of Jupiter. Our results show that planets can reside in much more massive stellar systems than what would be expected from extrapolation of previous results. The planet is unlikely to have formed in-situ through the conventional core accretion mechanism, but might have formed elsewhere and arrived to its present location through dynamical interactions, or might have formed via gravitational instability., Comment: Manuscript version. Published in Nature 9 December 2021
Published: 2021
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15. Nitsche method for contact with Coulomb friction: Existence results for the static and dynamic finite element formulations

Author: Franz Chouly, Patrick Hild, Vanessa Lleras, Yves Renard, Institut de Mathématiques de Bourgogne [Dijon] (IMB), Université de Bourgogne (UB)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Center for Scientific Computation and Mathematical Modeling (CSCAMM), Centro de Investigación en Ingeniería Matemática [Concepción] (CI²MA), Universidad de Concepción - University of Concepcion [Chile], Institut de Mathématiques de Toulouse UMR5219 (IMT), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Institut Montpelliérain Alexander Grothendieck (IMAG), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA), Region Bourgogne-Franche-ComteANR-17-EURE-0002Centre National de la Recherche Scientifique (DEFI InFIniTI 2017)232789Agence Maths Entreprises (AMIES) (Projet Exploratoire PEPS2 MethASim)I-Site BFC project NAANoDEIPHI Graduate School2015C-4991, ANR-17-EURE-0002,EIPHI,Ingénierie et Innovation par les sciences physiques, les savoir-faire technologiques et l'interdisciplinarité(2017), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), and Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université de Bourgogne (UB)
Subjects: Nitsche's method, Computational Mathematics, Unilateral contact, Coulomb friction, Applied Mathematics, Finite elements, [MATH]Mathematics [math], [MATH.MATH-NA]Mathematics [math]/Numerical Analysis [math.NA], Mathematics::Numerical Analysis
Abstract: International audience; We study the Nitsche-based finite element method for contact with Coulomb friction considering both static and dynamic situations. We provide existence and/or uniqueness results for the discretized problems under appropriate assumptions on physical and numerical parameters. In the dynamic case, existence and uniqueness of the space semi-discrete problem holds for every value of the friction coefficient and the Nitsche parameter. In the static case, if the Nitsche parameter is large enough, existence is ensured for any friction coefficient, and uniqueness can be obtained provided that the friction coefficient is below a bound that depends on the mesh size. These results are complemented by a numerical study.
Published: 2022
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16. Flux approximation on unfitted meshes and application to multiscale hybrid-mixed methods

Author: Chaumont-Frelet, Théophile, Paredes, Diego, Valentin, Frédéric, Modélisation et méthodes numériques pour le calcul d'interactions onde-matière nanostructurée (ATLANTIS), Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire Jean Alexandre Dieudonné (LJAD), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), Laboratoire Jean Alexandre Dieudonné (LJAD), Universidad de Concepción - University of Concepcion [Chile], and Laboratorio Nacional de Computação Cientifica [Rio de Janeiro] (LNCC / MCT)
Subjects: [MATH.MATH-AP]Mathematics [math]/Analysis of PDEs [math.AP], [MATH.MATH-NA]Mathematics [math]/Numerical Analysis [math.NA]
Abstract: The flux variable determines the approximation quality of hybridizationbased numerical methods. This work proves that approximating flux variables in discontinuous polynomial spaces from the L2 orthogonal projection is super-convergent on meshes that are not aligned with jumping coefficient interfaces. The results assume only the local regularity of exact solutions in physical partitions. Based on the proposed flux approximation, we demonstrate that the mixed hybrid multiscale (MHM) finite element method is superconvergent in unfitted meshes, supporting the numerics presented in MHM seminal works.
Published: 2022

17. Computationally-efficient initialisation of GPs: The generalised variogram method

Author: Tobar, Felipe, Cazelles, Elsa, de Wolff, Taco, Universidad de Chile = University of Chile [Santiago] (UCHILE), Signal et Communications (IRIT-SC), Institut de recherche en informatique de Toulouse (IRIT), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Toulouse Mind & Brain Institut (TMBI), Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT), Inria Chile, Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad de Concepción - University of Concepcion [Chile], Fondecyt-Regular 1210606, ANID-Basal Center for Mathematical Modeling FB210005, ANID-Basal Advanced Center for Electrical and Electronic Engineering FB0008, CORFO/ANID International Centers of Excellence Program 10CEII-9157 Inria Chile, Inria Challenge OcéanIA, STICAmSud EMISTRAL, CLIMATAmSud GreenAI, Inria associated team SusAIn, ANR-19-P3IA-0004,ANITI,Artificial and Natural Intelligence Toulouse Institute(2019), and ANR-11-LABX-0040,CIMI,Centre International de Mathématiques et d'Informatique (de Toulouse)(2011)
Subjects: Signal Processing (eess.SP), FOS: Computer and information sciences, Computer Science - Machine Learning, [MATH.MATH-ST]Mathematics [math]/Statistics [math.ST], FOS: Electrical engineering, electronic engineering, information engineering, Electrical Engineering and Systems Science - Signal Processing, Machine Learning (cs.LG)
Abstract: 24 pages; International audience; We present a computationally-efficient strategy to initialise the hyperparameters of a Gaussian process (GP) avoiding the computation of the likelihood function. Our strategy can be used as a pretraining stage to find initial conditions for maximum-likelihood (ML) training, or as a standalone method to compute hyperparameters values to be plugged in directly into the GP model. Motivated by the fact that training a GP via ML is equivalent (on average) to minimising the KL-divergence between the true and learnt model, we set to explore different metrics/divergences among GPs that are computationally inexpensive and provide hyperparameter values that are close to those found via ML. In practice, we identify the GP hyperparameters by projecting the empirical covariance or (Fourier) power spectrum onto a parametric family, thus proposing and studying various measures of discrepancy operating on the temporal and frequency domains. Our contribution extends the variogram method developed by the geostatistics literature and, accordingly, it is referred to as the generalised variogram method (GVM). In addition to the theoretical presentation of GVM, we provide experimental validation in terms of accuracy, consistency with ML and computational complexity for different kernels using synthetic and real-world data.
Published: 2022
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18. On a finite element approximation for the elastoplastic torsion problem

Author: Franz Chouly, Patrick Hild, Institut de Mathématiques de Bourgogne [Dijon] (IMB), Université de Bourgogne (UB)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Center for Scientific Computation and Mathematical Modeling (CSCAMM), Centro de Investigación en Ingeniería Matemática [Concepción] (CI²MA), Universidad de Concepción - University of Concepcion [Chile], Institut de Mathématiques de Toulouse UMR5219 (IMT), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), I-Site BFC project NAANoDEIPHI Graduate SchoolANR-17-EURE-0002, and ANR-17-EURE-0002,EIPHI,Ingénierie et Innovation par les sciences physiques, les savoir-faire technologiques et l'interdisciplinarité(2017)
Subjects: Elastoplastic torsion problem, Applied Mathematics, Finite elements, Error estimates, [MATH]Mathematics [math], Variational inequalities
Abstract: International audience; This study is concerned with the elastoplastic torsion problem and its standard finite element approximation using piecewise affine Lagrange finite elements. In the case of a polytopal convex domain in dimension n = 1,2,3 we obtain an H-1-error bound of order h for the solution. For a nonconvex domain, we obtain also an error estimate.
Published: 2022
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19. New Mn(III) complexes with tetradentate cis-N2O2, acacen-type ligands. Synthesis and characterization, single-crystal X-ray diffraction and DFT studies

Author: Villaman, D., Rabanal-León, W.A., Fuentealba, M., Pena, O., Moreno, Y., Universidad de Concepción - University of Concepcion [Chile], Pontificia Universidad Católica de Valparaíso (PUCV), Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Universidad de La Serena (USERENA), EQM 120095, Agenția Națională pentru Cercetare și Dezvoltare, ANCD, Fondo Nacional de Desarrollo Científico y Tecnológico, FONDECYT: 3210226, and Agencia Nacional de Investigación y Desarrollo, ANID
Subjects: Jahn-Teller, Manganese(III), Inorganic Chemistry, Materials Chemistry, Tetradentate N2O2 Schiff base, Uniaxial anisotropy, [CHIM.INOR]Chemical Sciences/Inorganic chemistry, Physical and Theoretical Chemistry, High-spin
Abstract: International audience; One of the challenges of manganese(III) magnetochemistry is the design and synthesis of new building block systems to study and develop molecular magnets. In this context, two new Mn(III) complexes were synthesized using new tetradentate cis-N2O2 acacen ligands from the condensation of 1-anisyl-1,3-butanedione and 1,2-diaminoethane (2:1 ratio). All compounds were fully characterized by conventional spectroscopic techniques, such as FT-IR, HRMS, and UV–Vis, and rationalized with DFT and TD-DFT studies. The resulting cationic complexes were composed of N4O2 coordination spheres using a tetradentate ligand (N2O22−) in the equatorial plane and two axial pyridines with general formulae as [MnIII(L)(Py)2](X) (X = BF4−; ClO4−). Single-crystal X-ray diffraction revealed that both complexes are isostructural with typical axial anisotropy due to the Jahn-Teller effect by tetragonal distortion. A complete analysis of the crystalline structures revealed a nonclassical intermolecular interaction of C[sbnd]H···F and C[sbnd]H···O. Supported by Hirshfeld surfaces and 2D- fingerprint plots, it was possible to isolate and calculate the contribution of intermolecular interactions in the supramolecular arrangement. For both complexes, the magnetic susceptibility confirmed a high spin state (HS) with 4.8 µB and 4.9 µB related to the spin-only contribution to the magnetic moment.
Published: 2023
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20. JellyLens: Content-Aware Adaptive Lenses

Author: Olivier Chapuis, Emmanuel Pietriga, Claude Puech, Cyprien Pindat, Situated interaction (IN-SITU), Laboratoire de Recherche en Informatique (LRI), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Inria Saclay - Ile de France, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), MassData, Inria Chile, Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad de Concepción - University of Concepcion [Chile]-Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad de Concepción - University of Concepcion [Chile], Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad de Concepción - University of Concepcion [Chile], ACM, Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Universidad de Concepción [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Universidad de Concepción [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM), and Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Universidad de Concepción [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)
Subjects: Computer science, Multi-scale Interfaces, ACM: H.: Information Systems/H.5: INFORMATION INTERFACES AND PRESENTATION (e.g., HCI)/H.5.2: User Interfaces, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Focus+Context, Context (language use), 02 engineering and technology, law.invention, law, Distortion, 0202 electrical engineering, electronic engineering, information engineering, 0501 psychology and cognitive sciences, Relevance (information retrieval), Computer vision, [INFO.INFO-HC]Computer Science [cs]/Human-Computer Interaction [cs.HC], 050107 human factors, Lenses, Visual search, Focus (computing), business.industry, 05 social sciences, Visibility (geometry), 020207 software engineering, Usability, Lens (optics), Artificial intelligence, business
Abstract: International audience; Focus+context lens-based techniques smoothly integrate two levels of detail using spatial distortion to connect the magnified region and the context. Distortion guarantees visual continuity, but causes problems of interpretation and focus targeting, partly due to the fact that most techniques are based on statically-defined, regular lens shapes, that result in far-from-optimal magnification and distortion. JellyLenses dynamically adapt to the shape of the objects of interest, providing detail-in-context visualizations of higher relevance by optimizing what regions fall into the focus, context and spatially-distorted transition regions. This both improves the visibility of content in the focus region and preserves a larger part of the context region. We describe the approach and its implementation, and report on a controlled experiment that evaluates the usability of JellyLenses compared to regular fisheye lenses, showing clear performance improvements with the new technique for a multi-scale visual search task.
Published: 2012
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21. Interaction design challenges and solutions for ALMA operations monitoring and control

Author: Romain Primet, Joseph Schwarz, Emilio Barrios, Baltasar Vila Vilaro, Denis Barkats, Emmanuel Pietriga, Marcus Schilling, Pierre Cubaud, Situated interaction (IN-SITU), Laboratoire de Recherche en Informatique (LRI), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Inria Saclay - Ile de France, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), Inria Chile, Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad de Concepción - University of Concepcion [Chile], MassData, Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad de Concepción - University of Concepcion [Chile]-Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad de Concepción - University of Concepcion [Chile], CEDRIC - Interactivité pour Lire et Jouer (CEDRIC - ILJ), Centre d'études et de recherche en informatique et communications (CEDRIC), Ecole Nationale Supérieure d'Informatique pour l'Industrie et l'Entreprise (ENSIIE)-Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-Ecole Nationale Supérieure d'Informatique pour l'Industrie et l'Entreprise (ENSIIE)-Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), European Southern Observatory (ESO), Inria Saclay - Ile de France, Institut National de Recherche en Informatique et en Automatique (Inria), Joint ALMA Observatory (JAO), European Southern Observatory (ESO)-National Radio Astronomy Observatory (NRAO), Contrat industriel avec radio-observatoire ALMA., SPIE, Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Universidad de Concepción [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM), Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Universidad de Concepción [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Universidad de Concepción [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM), Ecole Nationale Supérieure d'Informatique pour l'Industrie et l'Entreprise (ENSIIE)-Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Ecole Nationale Supérieure d'Informatique pour l'Industrie et l'Entreprise (ENSIIE)-Conservatoire National des Arts et Métiers [CNAM] (CNAM), and National Radio Astronomy Observatory (NRAO)-European Southern Observatory (ESO)
Subjects: Rapid prototyping, Process (engineering), business.industry, Computer science, Interface (computing), 020207 software engineering, 02 engineering and technology, Interaction design, Visualization, Information visualization, Software, Human–computer interaction, 020204 information systems, Participatory design, 0202 electrical engineering, electronic engineering, information engineering, [INFO.INFO-HC]Computer Science [cs]/Human-Computer Interaction [cs.HC], User interface, business, ComputingMilieux_MISCELLANEOUS, Graphical user interface
Abstract: The ALMA radio-telescope, currently under construction in northern Chile, is a very advanced instrument that presents numerous challenges. From a software perspective, one critical issue is the design of graphical user interfaces for operations monitoring and control that scale to the complexity of the system and to the massive amounts of data users are faced with. Early experience operating the telescope with only a few antennas has shown that conventional user interface technologies are not adequate in this context. They consume too much screen real-estate, require many unnecessary interactions to access relevant information, and fail to provide operators and astronomers with a clear mental map of the instrument. They increase extraneous cognitive load, impeding tasks that call for quick diagnosis and action. To address this challenge, the ALMA software division adopted a user-centered design approach. For the last two years, astronomers, operators, software engineers and human-computer interaction researchers have been involved in participatory design workshops, with the aim of designing better user interfaces based on state-of-the-art visualization techniques. This paper describes the process that led to the development of those interface components and to a proposal for the science and operations console setup: brainstorming sessions, rapid prototyping, joint implementation work involving software engineers and human-computer interaction researchers, feedback collection from a broader range of users, further iterations and testing.
Published: 2012
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22. Looking behind Bezels: French Windows for Wall Displays

Author: Pierre Cubaud, Rodrigo A. de Almeida, Emmanuel Pietriga, Clément Pillias, Situated interaction (IN-SITU), Laboratoire de Recherche en Informatique (LRI), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Inria Saclay - Ile de France, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), MassData, Inria Chile, Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad de Concepción - University of Concepcion [Chile]-Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad de Concepción - University of Concepcion [Chile], CEDRIC - Interactivité pour Lire et Jouer (CEDRIC - ILJ), Centre d'études et de recherche en informatique et communications (CEDRIC), Ecole Nationale Supérieure d'Informatique pour l'Industrie et l'Entreprise (ENSIIE)-Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-Ecole Nationale Supérieure d'Informatique pour l'Industrie et l'Entreprise (ENSIIE)-Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), DIM Digiteo/Région Île-de-France, ACM, Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Universidad de Concepción [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Universidad de Concepción [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM), and Ecole Nationale Supérieure d'Informatique pour l'Industrie et l'Entreprise (ENSIIE)-Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Ecole Nationale Supérieure d'Informatique pour l'Industrie et l'Entreprise (ENSIIE)-Conservatoire National des Arts et Métiers [CNAM] (CNAM)
Subjects: Offset (computer science), Computer science, ACM: H.: Information Systems/H.5: INFORMATION INTERFACES AND PRESENTATION (e.g., HCI)/H.5.2: User Interfaces, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, 02 engineering and technology, Computer graphics (images), 0202 electrical engineering, electronic engineering, information engineering, 0501 psychology and cognitive sciences, Computer vision, Wall-sized displays, [INFO.INFO-HC]Computer Science [cs]/Human-Computer Interaction [cs.HC], 050107 human factors, Visualization, Motion Parallax, Bezels, Pixel, business.industry, 05 social sciences, 020207 software engineering, Head tracking, Grid, Artificial intelligence, Parallax, business, Pixel density, Gesture
Abstract: International audience; Using tiled monitors to build wall-sized displays has multiple advantages: higher pixel density, simpler setup and easier calibration. However, the resulting display walls suffer from the visual discontinuity caused by the bezels that frame each monitor. To avoid introducing distortion, the image has to be rendered as if some pixels were drawn behind the bezels. In turn, this raises the issue that a non-negligible part of the rendered image, that might contain important information, is visually occluded. We propose to draw upon the analogy to french windows that is often used to describe this approach, and make the display really behave as if the visualization were observed through a french window. We present and evaluate two interaction techniques that let users reveal content hidden behind bezels. ePanenables users to offset the entire image through explicit touch gestures. GridScape adopts a more implicit approach: it makes the grid formed by bezels act like a true french window using head tracking to simulate motion parallax, adapting to users’ physical movements in front of the display. The two techniques work for both single- and multiple-user contexts.
Published: 2012
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23. Impacts of the freshwater discharge on hydrodynamical patterns in the Gulf of Arauco (central-southern Chile) using a high-resolution circulation model

Author: Vergara, Odette A., Echevin, Vincent, Sobarzo, Marcus, Sepúlveda, H. H., Castro, Leonardo, Soto-Mendoza, Samuel, Universidad de Concepción - University of Concepcion [Chile], Processus et interactions de fine échelle océanique (PROTEO), Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN), Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)
Subjects: Humboldt current system, [SDU]Sciences of the Universe [physics], Biobio River discharges, Coastal modeling, Gulf of Arauco, Aquatic Science, Oceanography, Ecology, Evolution, Behavior and Systematics
Abstract: International audience; Off the central-southern Chilean coast (35°-38°S), the Gulf of Arauco is one of Chile's largest semi-enclosed coastal areas. It hosts industrialized activities within a highly productive zone of the Southern Humboldt Current System. One of the principal hydrodynamical forcings of the region is the Biobio River, whose discharge significantly influences coastal dynamics in the Gulf. The present work aims to study the impact of the Biobio River freshwater discharge on the circulation patterns in the Gulf of Arauco, using a high-resolution interannual simulation of the period 2013-2018. The simulation includes monthly interannual discharge from the significant four rivers for the study zone (Mataquito, Maule, Biobío, and Itata). The focus is primarily on wintertime (June-September), the highest freshwater discharges period. The modeled temperature and salinity fields were consistent with in-situ observations, presenting a moderate bias. The water masses highlighted in the TS diagrams, the temperature time series, and especially the currents near the Biobio River mouth were well represented in the simulation. It was found that the Biobio River strongly impacted the circulation in the Gulf of Arauco, intensifying the currents and causing a notable salinity decrease. Offshore zonal currents were intensified west of the Biobio River mouth, whereas southward alongshore currents were enhanced, especially during August. The influence of the Biobio River in the Gulf of Arauco was closely related to discharge strength. A strong relation between predominant southward downwelling-favorable wind stress and meridional currents was found, probably due to the formation of a buoyant coastal current strengthened by the wind-driven current during winter. Finally, surface buoyant waters associated with the river discharge generated a strong baroclinic zonal pressure gradient equilibrating the sheared meridional flow and enhancing the meridional ageostrophic pressure gradient, Reynolds stress, and near-surface vertical mixing of momentum.
Published: 2023
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24. A cobalt oxide–polypyrrole nanocomposite as an efficient and stable electrode material for electrocatalytic water oxidation

Author: Jean-Luc Putaux, Christine Lancelon-Pin, Catalina N. Astudillo, Cyrille Costentin, Chantal Gondran, Selim Sirach, Baptiste Dautreppe, Jérôme Fortage, Benoit Chovelon, Dmitry Aldakov, Daniela V. Morales, Eleonora-Mihaela Ungureanu, Veronica Anastasoaie, Dominique André, Bernabé L. Rivas, Bruno F. Urbano, Marie-Noëlle Collomb, Université Grenoble Alpes (UGA), Universidad Católica de la Santísima Concepción (UCSC), Département de Chimie Moléculaire (DCM), Université Grenoble Alpes (UGA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), University Politehnica of Bucharest [Romania] (UPB), Universidad de Concepción - University of Concepcion [Chile], CEA Grenoble (CEA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre National de la Recherche Scientifique (CNRS), SYstèmes Moléculaires et nanoMatériaux pour l’Energie et la Santé (SYMMES), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA), CHU de Grenoble site Nord, Centre de Recherches sur les Macromolécules Végétales (CERMAV), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Université de Paris - UFR de Chimie, UPB - University Politehnica of Bucharest [Romania], Synthèse, Structure et Propriétés de Matériaux Fonctionnels (STEP ), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Institut de Biologie et de Pathologie - IBP [CHU Grenoble], Département de pharmacochimie moléculaire (DPM), and ANR-17-EURE-0003,CBH-EUR-GS,CBH-EUR-GS(2017)
Subjects: Materials science, Energy Engineering and Power Technology, chemistry.chemical_element, 02 engineering and technology, [CHIM.INOR]Chemical Sciences/Inorganic chemistry, Overpotential, 010402 general chemistry, Electrocatalyst, Polypyrrole, 7. Clean energy, 01 natural sciences, law.invention, chemistry.chemical_compound, law, Cobalt oxide, Electrolysis, Nanocomposite, Renewable Energy, Sustainability and the Environment, [CHIM.CATA]Chemical Sciences/Catalysis, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, [CHIM.POLY]Chemical Sciences/Polymers, Fuel Technology, Chemical engineering, chemistry, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Water splitting, [CHIM.OTHE]Chemical Sciences/Other, 0210 nano-technology, Cobalt
Abstract: International audience; Developing electrolyzers operating under neutral or near-neutral conditions with catalysts based only on earth-abundant metals is highly desirable with a view to reduce the cost of hydrogen production from water splitting reaction and avoid the environmental issues related to corrosion usually encountered with alkaline electrolyzers. Herein, we report a highly active and stable anode material for oxygen evolving reaction (OER) in mild-pH conditions based on cobalt oxide-nanoparticles embedded into a poly(pyrrole-alkylammonium) matrix (denoted PPN+-CoOx). Examples of hybrid materials combining metal oxide nanoparticles as OER catalysts within a polymer film are still rare. However, they are very promising to control the formation and the size of metal particles in view to enhance the electrochemically active surface area and thus the electrocatalytic performances. Our strategy consists in electroprecipitating Co0 nanoparticles by reduction of an anionic cobalt oxalate complex into the cationic PPN+ film, the latter being previously deposited onto an electrode surface by electropolymerization. The Co0 nanoparticles within the composite are then partially in-situ oxidized under air exposure into CoO, and then finally fully oxidized into CoOx by successive scans between 0 and 1.2 V vs Ag/AgCl in a borate buffer at pH 9.2. This nanocomposite material is highly structured with around 30 nm-large CoOx nanoparticles well dispersed into the polypyrrole film conferring a high OER electrocatalytic activity at near neutral pH of 9.2 with exceptional values of mass activity and turnover frequency of 3.01 A mg-1 and 0.46 s-1 respectively, at an overpotential of 0.61 V and with a cobalt loading of 1.34 µg cm-2. These performances place the PPN+-CoOx electrode among the most active anodes described in the literature employing cobalt oxide under mild pH conditions. In addition, when the PPN+-CoOx material is electrodeposited on carbon paper with a higher roughness than a simple carbon electrode, the physisorption of the film on the electrode is considerably enhanced resulting in a stable catalytic current over more than 43 h. Post electrolysis characterizations by SEM and EDX confirm the integrity of the PPN+-CoOx material after long hours of electrocatalysis. This demonstrates the beneficial role of the polypyrrole matrix in the achievement of very stable and highly active anodes for water oxidation.
Published: 2021
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25. Presence of Southeast Pacific blue whales ( Balaenoptera musculus ) off South Georgia in the South Atlantic Ocean

Author: Constanza Rojas‐Cerda, Susannah J. Buchan, Trevor A. Branch, Franck Malige, Julie Patris, Rodrigo Hucke‐Gaete, Iain Staniland, Pontificia Universidad Católica de Chile (UC), Centro de Estudios Avanzados en Zonas Aridas (CEAZA), Centro de Investigación Oceanográfica en el Pacífico Sur Oriental (COPAS), Universidad de Concepción - University of Concepcion [Chile], Woods Hole Oceanographic Institution, University of Washington [Seattle], Laboratoire d'Informatique et Systèmes (LIS), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), DYNamiques de l’Information (DYNI), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU), Universidad Austral de Chile, centro ballena azul, British Antarctic Survey (BAS), and Natural Environment Research Council (NERC)
Subjects: [SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph], [SDV]Life Sciences [q-bio], Aquatic Science, Ecology, Evolution, Behavior and Systematics
Abstract: International audience; The Southeast Pacific (SEP) or Chilean blue whale population is largely distributed between Northern Chilean Patagonia and the Eastern Tropical Pacific. Off South Georgia (SG), the majority of blue whales caught were Antarctic blue whales, but recent genetic and acoustic records indicate the possible presence of SEP individuals. To assess the presence of SEP blue whales off SG, we carried out new analyses of acoustic data previously reported as containing pygmy blue whale song and analyzed the length frequencies from 20th century catch data. The month of acoustic data reported to contain the presumed pygmy blue whale song was examined (August 2006), and 13 days were found to have songs which visually and quantitatively matched SEP2 songs from Northern Chilean Patagonia. The fundamental frequency of SEP2 song off SG, however, was not in line with the
Published: 2022
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26. A non-local pedestrian flow model accounting for anisotropic interactions and domain boundaries

Author: Bürger, Raimund, Goatin, Paola, Inzunza, Daniel, Villada, Luis Miguel, Universidad de Concepción [Chile], Analysis and Control of Unsteady Models for Engineering Sciences (ACUMES), Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), Laboratoire Jean Alexandre Dieudonné (JAD), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS), Université Côte d'Azur (UCA), Universidad del Bio Bio [Concepción] (UBB), Universidad de Concepción - University of Concepcion [Chile], and Université Nice Sophia Antipolis (1965 - 2019) (UNS)
Subjects: non-local conservation laws, macroscopic pedestrian flow models, bounded domains, anisotropic interactions, high-resolution weno schemes, QA1-939, [MATH.MATH-AP]Mathematics [math]/Analysis of PDEs [math.AP], TP248.13-248.65, Mathematics, Biotechnology
Abstract: International audience; This study revises the non-local macroscopic pedestrian flow model proposed in [R. M. Colombo, M. Garavello, and M. Lécureux-Mercier. A class of nonlocal models for pedestrian tra c. Math. Models Methods Appl. Sci., 22(4):1150023, 34, 2012] to account for anisotropic interactions and the presence of walls or other obstacles in the walking domain. We prove the well-posedness of this extended model and we apply high-resolution numerical schemes to illustrate the model characteristics. In particular, numerical simulations highlight the role of different model parameters in the observed pattern formation.
Published: 2020
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27. Pre-expansivity in cellular automata

Author: Vincent Nesme, Guillaume Theyssier, Anahí Gajardo, Institut de Mathématiques de Marseille (I2M), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS), CONICYT-FONDECYT#1140684CONICYT-Basal PFB03, Universidad de Concepción - University of Concepcion [Chile], Universidad de Chile = University of Chile [Santiago] (UCHILE), and Lycée Georges Brassens
Subjects: [INFO.INFO-CC]Computer Science [cs]/Computational Complexity [cs.CC], FOS: Computer and information sciences, Property (philosophy), Discrete Mathematics (cs.DM), 2-dimensional cellular automata, General Computer Science, chaos, [MATH.MATH-DS]Mathematics [math]/Dynamical Systems [math.DS], directional dynamics, Dynamical Systems (math.DS), directional dynamics 2010 MSC: 68Q80, 0102 computer and information sciences, 02 engineering and technology, [INFO.INFO-DM]Computer Science [cs]/Discrete Mathematics [cs.DM], 01 natural sciences, 37B15, Theoretical Computer Science, Combinatorics, Dimension (vector space), FOS: Mathematics, 0202 electrical engineering, electronic engineering, information engineering, Mathematics - Dynamical Systems, Abelian group, linear cellular automata, Mathematics, 2-dimensional cellular, MSC: 68Q80, 37B15, cellular automata, expansivity, 16. Peace & justice, Cellular automaton, 010201 computation theory & mathematics, Free group, 020201 artificial intelligence & image processing, Expansive, Value (mathematics), Computer Science - Discrete Mathematics
Abstract: International audience; We introduce the notion of pre-expansivity for cellular automata (CA): it is the property of being positively expansive on asymptotic pairs of configurations (i.e. configurations that differ in only finitely many positions). Pre-expansivity therefore lies between positive expansivity and pre-injectivity, two important notions of CA theory.We show that there exist one-dimensional pre-expansive CAs which are not positively expansive and they can be chosen reversible (while positive expansivity is impossible for reversible CAs). We provide both linear and non-linear examples. In the one-dimensional setting, we also show that pre-expansivity implies sensitivity to initial conditions in any direction. We show however that no two-dimensional Abelian CA can be pre-expansive. We also consider the finer notion of k-expansivity (positive expansivity over pairs of configurations with exactly k differences) and show examples of linear CA in dimension 2 and on the free group that are k-expansive depending on the value of k, whereas no (positively) expansive CA exists in this setting.
Published: 2020
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28. Niche breadth affects bacterial transcription patterns along a salinity gradient

Author: Angel Rain‐Franco, Nicolas Mouquet, Claire Gougat‐Barbera, Thierry Bouvier, Sara Beier, Universidad de Concepción - University of Concepcion [Chile], Laboratoire d'Océanographie Microbienne (LOMIC), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Observatoire océanologique de Banyuls (OOB), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), MARine Biodiversity Exploitation and Conservation (UMR MARBEC), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Institut des Sciences de l'Evolution de Montpellier (UMR ISEM), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Institut de recherche pour le développement [IRD] : UR226-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS), and Leibniz Institute for Baltic Sea Research Warnemünde (IOW)
Subjects: Acclimatization, [SDE.MCG]Environmental Sciences/Global Changes, specialists, microbial communities, generalists, diversity, salinity, 03 medical and health sciences, evolution, Genetics, microorganisms, Ecosystem, Ecology, Evolution, Behavior and Systematics, 030304 developmental biology, biodiversity, 0303 health sciences, mechanisms, metatranscriptomics, Bacteria, 030306 microbiology, stress response, Adaptation, Physiological, gene-expression, stress marker genes, plasticity, climate-change, niche width, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, transcriptome
Abstract: WOS:000733372500001; International audience; Understanding the molecular mechanisms that determine a species' life history is important for predicting their susceptibility to environmental change. While specialist species with a narrow niche breadth (NB) maximize their fitness in their optimum habitat, generalists with broad NB adapt to multiple environments. The main objective of this study was to identify general transcriptional patterns that would distinguish bacterial strains characterized by contrasted NBs along a salinity gradient. More specifically, we hypothesized that genes encoding fitness-related traits, such as biomass production, have a higher degree of transcriptional regulation in specialists than in generalists, because the fitness of specialists is more variable under environmental change. By contrast, we expected that generalists would exhibit enhanced transcriptional regulation of genes encoding traits that protect them against cellular damage. To test these hypotheses, we assessed the transcriptional regulation of fitness-related and adaptation-related genes of 11 bacterial strains in relation to their NB and stress exposure under changing salinity conditions. The results suggested that transcriptional regulation levels of fitness- and adaptation-related genes correlated with the NB and/or the stress exposure of the inspected strains. We further identified a shortlist of candidate stress marker genes that could be used in future studies to monitor the susceptibility of bacterial populations or communities to environmental changes.
Published: 2022
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29. GOODS-ALMA 2.0: Source catalog, number counts, and prevailing compact sizes in 1.1 mm galaxies

Author: Gómez-Guijarro, C., Elbaz, D., Xiao, M., Béthermin, M., Franco, M., Magnelli, B., Daddi, E., Dickinson, M., Demarco, R., Inami, H., Rujopakarn, W., Magdis, G.E., Shu, X., Chary, R., Zhou, L., Alexander, D.M., Bournaud, F., Ciesla, L., Ferguson, H.C., Finkelstein, S.L., Finlez, C., Giavalisco, M., Iono, D., Juneau, S., Kartaltepe, J.S., Lagache, G., Le Floc'H, E., Leiton, R., Lin, L., Messias, H., Motohara, K., Mullaney, J., Nagar, N.M., Okumura, K., Pannella, M., Papovich, C., Pope, A., Sargent, M.T., Silverman, J.D., Treister, E., Wang, T., Le Floc’h, E., Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), University of Hertfordshire [Hatfield] (UH), NSF’s National Optical-Infrared Astronomy Research Laboratory (NOIRLab), Universidad de Concepción - University of Concepcion [Chile], Hiroshima University, Chulalongkorn University [Bangkok], Danmarks Tekniske Universitet = Technical University of Denmark (DTU), Anhui Normal University, California Institute of Technology (CALTECH), Nanjing University (NJU), Durham University, Space Telescope Science Institute (STSci), University of Texas at Austin [Austin], University of Massachusetts [Amherst] (UMass Amherst), University of Massachusetts System (UMASS), National Astronomical Observatory of Japan (NAOJ), Rochester Institute of Technology, Département d'Astrophysique (ex SAP) (DAP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Academia Sinica, The University of Tokyo (UTokyo), University of Sheffield [Sheffield], Università degli studi di Trieste = University of Trieste, Texas A&M University System, University of Sussex, Pontificia Universidad Católica de Chile (UC), Univ New South Wales, MERLin Sch Chem Engn, Sydney, NSW 2052, Australia, and We thank G. Pöpping, C. del P. Lagos, and J. A.Zavala for providing the predicted number counts from their models plotted in Fig. 11. M.F. acknowledges the support from STFC (grant number ST/R000905/1). G.E.M. acknowledges the Villum Fonden research grant 13160 ‘Gas to stars, stars to dust: tracing star formation across cosmic time’ and the Cosmic Dawn Center of Excellence funded by the Danish National Research Foundation under the grant No. 140. H.I. acknowledges support from JSPS KAKENHI Grant Number JP19K23462 and JP21H01129. M.T.S. acknowledges support from a Scientific Exchanges visitor fellowship (IZSEZO_202357) from the Swiss National Science Foundation. This papermakes use of the following ALMA data: ADS/JAO.ALMA#2015.1.00543.S and ADS/JAO.ALMA#2017.1.00755.S. ALMA is a partnership of ESO (representing its member states), NSF (USA) and NINS (Japan), together with NRC (Canada), MOST and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO and NAOJ. We are grateful to the anonymous referee, whose comments have been very useful to improving our work
Subjects: submillimeter: galaxies, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Stellar mass, structure [Galaxies], PHYSICAL-PROPERTIES, FOS: Physical sciences, Flux, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, star formation [Galaxies], 01 natural sciences, GMASS ULTRADEEP SPECTROSCOPY, high-redshift [Galaxies], galaxies [Submillimeter], galaxies: high-redshift, 0103 physical sciences, STAR-FORMING GALAXIES, Sensitivity (control systems), Continuum (set theory), DEEP FIELD-SOUTH, MAIN-SEQUENCE, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Effective radius, Physics, DEGREE EXTRAGALACTIC SURVEY, SUBMILLIMETER GALAXIES, 010308 nuclear & particles physics, photometry [Galaxies], Homogeneity (statistics), MASSIVE GALAXIES, Astronomy and Astrophysics, evolution [Galaxies], FAR-INFRARED PROPERTIES, Astrophysics - Astrophysics of Galaxies, Galaxy, Redshift, galaxies: photometry, LUMINOSITY FUNCTION, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), galaxies: star formation, galaxies: structure, Astrophysics::Earth and Planetary Astrophysics, galaxies: evolution, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: Submillimeter/millimeter observations of dusty star-forming galaxies with the Atacama Large Millimeter/submillimeter Array (ALMA) have shown that dust continuum emission generally occurs in compact regions smaller than the stellar distribution. However, it remains to be understood how systematic these findings are. Studies often lack homogeneity in the sample selection, target discontinuous areas with inhomogeneous sensitivities, and suffer from modest $uv$ coverage coming from single array configurations. GOODS-ALMA is a 1.1mm galaxy survey over a continuous area of 72.42arcmin$^2$ at a homogeneous sensitivity. In this version 2.0, we present a new low resolution dataset and its combination with the previous high resolution dataset from the survey, improving the $uv$ coverage and sensitivity reaching an average of $��= 68.4��$Jy beam$^{-1}$. A total of 88 galaxies are detected in a blind search (compared to 35 in the high resolution dataset alone), 50% at $S/N_{peak} \geq 5$ and 50% at $3.5 \leq S/N_{peak} \leq 5$ aided by priors. Among them, 13 out of the 88 are optically dark or faint sources ($H$- or $K$-band dropouts). The sample dust continuum sizes at 1.1mm are generally compact, with a median effective radius of $R_{e} = 0"10 \pm 0"05$ (a physical size of $R_{e} = 0.73 \pm 0.29$kpc at the redshift of each source). Dust continuum sizes evolve with redshift and stellar mass resembling the trends of the stellar sizes measured at optical wavelengths, albeit a lower normalization compared to those of late-type galaxies. We conclude that for sources with flux densities $S_{1.1mm} > 1$mJy, compact dust continuum emission at 1.1mm prevails, and sizes as extended as typical star-forming stellar disks are rare. The $S_{1.1mm} < 1$mJy sources appear slightly more extended at 1.1mm, although they are still generally compact below the sizes of typical star-forming stellar disks., Accepted by A&A. 30 pages, 18 figures
Published: 2022
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30. First Identification of Reinfection by a Genetically Different Variant of SARS-CoV-2 in a Homeless Person from the Metropolitan Area of Santiago, Chile

Author: Claudio Acuña-Castillo, Mabel Vidal, Ailen Inostroza-Molina, Eva Vallejos-Vidal, Roberto Luraschi, Maximiliano Figueroa, Carlos Barrera-Avalos, Rodrigo Vera, Sergio Vargas, Daniel Valdes, Kevin Maisey, Mónica Imarai, Elías Leiva-Salcedo, Alejandro Escobar, Sebastián Reyes-Cerpa, Alexis Gaete, Ricardo Palma-Vejares, Dante Travisany, Leonel E. Rojo, Felipe E. Reyes-López, Ana María Sandino, Universidad de Santiago de Chile [Santiago] (USACH), Groupe Interdisciplinaire de Génoprotéomique Appliquée (GIGA-Research), Université de Liège, Universidad de Chile = University of Chile [Santiago] (UCHILE), Universidad Mayor [Santiago de Chile], Centro de Modelamiento Matemático [Santiago] (CMM), Universidad de Santiago de Chile [Santiago] (USACH)-Centre National de la Recherche Scientifique (CNRS), Inria Chile, Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad de Concepción - University of Concepcion [Chile], and Universitat Autònoma de Barcelona (UAB)
Subjects: [SDV.MHEP.ME]Life Sciences [q-bio]/Human health and pathology/Emerging diseases, Article Subject, SARS-CoV-2, Health, Toxicology and Mutagenesis, Public Health, Environmental and Occupational Health, COVID-19, COVID-19 Testing, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Reinfection, Ill-Housed Persons, Humans, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, Chile, Pandemics
Abstract: International audience; The identification and tracking of SARS-CoV-2 infected patients in the general population are essential components of the global strategy to limit the COVID-19 viral spread, specifically for maintaining traceability and suppressing the resurgence of local outbreaks. Public health programs that include continuous RT-qPCR testing for COVID-19 in the general population, viral sequencing, and genomic surveillance for highly contagious forms of the virus have allowed for the identification of SARS-CoV-2 infections and reinfections. This work identified SARS-CoV-2 reinfection in a homeless person, which occurred 58 days after the first COVID-19 diagnosis. Genomic sequencing identified a different Nextstrain classification clade (20A and 20B) and PANGO lineage, with a divergence of 4 single nucleotide variants (SNVs) in S and ORF1ab genes, suggesting reinfection by different viral variants. This study is the first from the great metropolitan area of Santiago, Chile, one of the top ten countries in the world to live during the COVID-19 pandemic. We support the importance of performing intensive genomic surveillance programs in the whole population and high-risk groups, such as homeless people, nearly 20 thousand people in Chile, and have limited access to health care services and poor viral traceability.
Published: 2022
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31. MATISSE, the VLTI mid-infrared imaging spectro-interferometer

Author: Lopez, B., Lagarde, S., Petrov, R.G., Jaffe, W., Antonelli, P., Allouche, F., Berio, P., Matter, A., Meilland, A., Millour, F., Robbe-Dubois, S., Henning, T., Weigelt, G., Glindemann, A., Agocs, T., Bailet, C., Beckmann, U., Bettonvil, F., Boekel, R. van, Bourget, P., Bresson, Y., Bristow, P., Cruzalèbes, P., Eldswijk, E., Fanteï Caujolle, Y., González Herrera, J.C., Graser, U., Guajardo, P., Heininger, M., Hofmann, K.H., Kroes, G., Laun, W., Lehmitz, M., Leinert, C., Meisenheimer, K., Morel, S., Neumann, U., Paladini, C., Percheron, I., Riquelme, M., Schoeller, M., Stee, P., Venema, L., Woillez, J., Zins, G., Ábrahám, P., Abadie, S., Abuter, R., Accardo, M., Adler, T., Alonso, J., Augereau, J.-C., Böhm, A., Bazin, G., Beltran, J., Bensberg, A., Boland, W., Brast, R., Burtscher, L., Castillo, R., Chelli, A., Cid, C., Clausse, J.-M., Connot, C., Conzelmann, R.D., Danchi, W.C., Delbo, M., Drevon, J., Dominik, C., Duin, A. van, Ebert, M., Eisenhauer, F., Flament, S., Frahm, R., Gámez Rosas, V., Gabasch, A., Gallenne, A., Garces, E., Girard, P., Glazenborg, A., Gonté, F.Y.J., Guitton, F., Haan, M. de, Hanenburg, H., Haubois, X., Hocdé, V., Hogerheijde, M., Horst, R. ter, Hron, J., Hummel, C.A., Hubin, N., Huerta, R., Idserda, J., Isbell, J.W., Ives, D., Jakob, G., Jaskó, A., Jochum, L., Klarmann, L., Klein, R., Kragt, J., Kuindersma, S., Kokoulina, E., Labadie, L., Lacour, S., Leftley, J., Le Poole, R., Lizon, J.L., Lopez, M., Lykou, F., Mérand, A., Marcotto, A., Mauclert, N., Maurer, T., Mehrgan, L.H., Meisner, J., Meixner, K., Mellein, M., Menut, J.L., Mohr, L., Mosoni, L., Navarro, R., Nußbaum, E., Pallanca, L., Pantin, E., Pasquini, L., Phan Duc, T., Pott, J.U., Pozna, E., Richichi, A., Ridinger, A., Rigal, F., Rivinius, T., Roelfsema, R., Rohloff, R.-R., Rousseau, S., Salabert, D., Schertl, D., Schuhler, N., Schuil, M., Shabun, K., Soulain, A., Stephan, C., Toledo, P., Tristram, K., Tromp, N., Vakili, F., Varga, J., Vinther, J., Waters, L.B.F.M., Wittkowski, M., Wolf, S., Wrhel, F., Yoffe, G., Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Leiden Observatory [Leiden], Universiteit Leiden [Leiden], Max-Planck-Institut für Astronomie (MPIA), Max-Planck-Gesellschaft, Max-Planck-Institut für Radioastronomie (MPIFR), European Southern Observatory (ESO), Low Energy Astrophysics (API, FNWI), Université Côte d'Azur (UCA), Observatoire de la Côte d'Azur (OCA), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Universiteit Leiden, Centre de Développement des Energies Renouvelables (CDER), Ministère de l'Enseignement Supérieur et de la Recherche Scientifique [Algérie] (MESRS), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Max Planck Institute for Astronomy (MPIA), European Southern Observatory Headquarters, NOVA Optical IR Instrumentation Group, Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), Centre National d'Études Spatiales [Toulouse] (CNES)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France -Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France, Kiel University, NASA Goddard Space Flight Center (GSFC), Universiteit van Amsterdam (UvA), Max Planck Institute for Extraterrestrial Physics (MPE), Miniaturisation pour la Synthèse, l’Analyse et la Protéomique - UAR 3290 (MSAP), Université de Lille-Centre National de la Recherche Scientifique (CNRS), Universidad de Concepción - University of Concepcion [Chile], médialab (Sciences Po) (médialab), Sciences Po (Sciences Po), Polish Academy of Sciences (PAN), Universität zu Köln = University of Cologne, Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics (LESIA), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), École, mutations, apprentissages (EMA), CY Cergy Paris Université (CY), Konkoly Observatory, Research Centre for Astronomy and Earth Sciences [Budapest], Hungarian Academy of Sciences (MTA)-Hungarian Academy of Sciences (MTA), Géoazur (GEOAZUR 7329), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), Zselic Park of Stars, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Department of Hematology, Instituto Superiore di Sanita Roma, Astronomical Institute Anton Pannekoek (AI PANNEKOEK), University of Amsterdam [Amsterdam] (UvA), Institut National du Cancer [Boulogne Billancourt] (INC), and Radboud University [Nijmegen]
Subjects: [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Astronomy, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astronomy and Astrophysics, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Space and Planetary Science, instrumentation: high angular resolution, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, methods: observational, instrumentation: interferometers, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM)
Abstract: Context:Optical interferometry is at a key development stage. ESO's VLTI has established a stable, robust infrastructure for long-baseline interferometry for general astronomical observers. The present second-generation instruments offer a wide wavelength coverage and improved performance. Their sensitivity and measurement accuracy lead to data and images of high reliability. Aims:We have developed MATISSE, the Multi AperTure mid-Infrared SpectroScopic Experiment, to access high resolution imaging in a wide spectral domain and explore topics such: stellar activity and mass loss; planet formation and evolution in the gas and dust disks around young stars; accretion processes around super massive black holes in AGN. Methods:The instrument is a spectro-interferometric imager covering three atmospheric bands (L,M,N) from 2.8 to 13.0 mu, combining four optical beams from the VLTI's telscopes. Its concept, related observing procedure, data reduction and calibration approach are the product of 30 years of instrumental research. The instrument utilizes a multi-axial beam combination that delivers spectrally dispersed fringes. The signal provides the following quantities at several spectral resolutions: photometric flux, coherent fluxes, visibilities, closure phases, wavelength differential visibilities and phases, and aperture-synthesis imaging. Results:We provide an overview of the physical principle of the instrument and its functionalities, the characteristics of the delivered signal, a description of the observing modes and of their performance limits. An ensemble of data and reconstructed images are illustrating the first acquired key observations. Conclusion:The instrument has been in operation at Cerro Paranal, ESO, Chile since 2018, and has been open for science use by the international community since April 2019. The first scientific results are being published now., 24 pages, 26 figures, submitted to Astronomy & Astrophysics
Published: 2022
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32. THIONE-THIOL TAUTOMERIC EQUILIBRIUM IN A DIHYDROPYRIMIDINE-THIONE: X RAY DIFFRACTION HELPED BY NMR, FTIR AND THEORETICAL CALCULATIONS

Author: L. Álvarez, F. Brovelli, R. Baggio, O. Peña, J. Muñoz, J. Soto-Delgado, Y. Moreno, Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM), Universidad de Concepción - University of Concepcion [Chile], Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Universidad Andrés Bello [Santiago] (UNAB), Universidad de La Serena (USERENA), and French-Chilean International Research Project 'Cooperation in Inorganic Chemistry' (IRP CoopIC) . Direccion de Investigacion y Desarrollo de Universidad de La Serena, DIDULS [PAAI214]
Subjects: bio reactors, Greywater, filtering membranes, ultrafiltration, [CHIM]Chemical Sciences, General Chemistry, Microfiltration
Abstract: International audience; The solid state thione-thiol equilibrium in 4,6-di-phenyl-3,4-di-hydro-pyrimidine-2(1H)-thione (C16H14N2S) is analyzed through three different techniques, viz: Single Cristal X-Ray Diffraction (SCXRD), Nuclear Magnetic Resonance (NMR) and Fourier Transformed Infra-Red spectroscopy (FTIR), each one providing complementary information to the solution of the problem. The existence of thione-thiol equilibrium is firmly established, both in solution (by HNMR techniques) as in the solid state (by FTIR methods), and even if no traces of the thiol form could be found via SCXRD, some hints about the way in which the coexistence of both forms could be structurally achieved are provided by the structural analysis. In order to confirm the existence of this equilibrium, theoretical calculations were carried out at the B3LYP/6-311G(d,p) level theory, and a double proton transfer reaction is proposed.
Published: 2022
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33. The challenge of unprecedented floods and droughts in risk management

Author: Heidi Kreibich, Anne F. Van Loon, Kai Schröter, Philip J. Ward, Maurizio Mazzoleni, Nivedita Sairam, Guta Wakbulcho Abeshu, Svetlana Agafonova, Amir AghaKouchak, Hafzullah Aksoy, Camila Alvarez-Garreton, Blanca Aznar, Laila Balkhi, Marlies H. Barendrecht, Sylvain Biancamaria, Liduin Bos-Burgering, Chris Bradley, Yus Budiyono, Wouter Buytaert, Lucinda Capewell, Hayley Carlson, Yonca Cavus, Anaïs Couasnon, Gemma Coxon, Ioannis Daliakopoulos, Marleen C. de Ruiter, Claire Delus, Mathilde Erfurt, Giuseppe Esposito, Didier François, Frédéric Frappart, Jim Freer, Natalia Frolova, Animesh K. Gain, Manolis Grillakis, Jordi Oriol Grima, Diego A. Guzmán, Laurie S. Huning, Monica Ionita, Maxim Kharlamov, Dao Nguyen Khoi, Natalie Kieboom, Maria Kireeva, Aristeidis Koutroulis, Waldo Lavado-Casimiro, Hong-Yi Li, María Carmen LLasat, David Macdonald, Johanna Mård, Hannah Mathew-Richards, Andrew McKenzie, Alfonso Mejia, Eduardo Mario Mendiondo, Marjolein Mens, Shifteh Mobini, Guilherme Samprogna Mohor, Viorica Nagavciuc, Thanh Ngo-Duc, Thi Thao Nguyen Huynh, Pham Thi Thao Nhi, Olga Petrucci, Hong Quan Nguyen, Pere Quintana-Seguí, Saman Razavi, Elena Ridolfi, Jannik Riegel, Md Shibly Sadik, Elisa Savelli, Alexey Sazonov, Sanjib Sharma, Johanna Sörensen, Felipe Augusto Arguello Souza, Kerstin Stahl, Max Steinhausen, Michael Stoelzle, Wiwiana Szalińska, Qiuhong Tang, Fuqiang Tian, Tamara Tokarczyk, Carolina Tovar, Thi Van Thu Tran, Marjolein H. J. Van Huijgevoort, Michelle T. H. van Vliet, Sergiy Vorogushyn, Thorsten Wagener, Yueling Wang, Doris E. Wendt, Elliot Wickham, Long Yang, Mauricio Zambrano-Bigiarini, Günter Blöschl, Giuliano Di Baldassarre, Natural Environment Research Council (NERC), Water and Climate Risk, German Research Centre for Geosciences - Helmholtz-Centre Potsdam (GFZ), Vrije Universiteit Amsterdam [Amsterdam] (VU), Technische Universität Braunschweig = Technical University of Braunschweig [Braunschweig], University of Houston, Lomonosov Moscow State University (MSU), University of California (UC), Istanbul Technical University (ITÜ), Universidad de la frontera [Chile], Center for Climate and Resilience Research [Conception] ((CR)2), Universidad de Concepción - University of Concepcion [Chile], Operations Department, Barcelona Cicle de l’Aigua, University of Saskatchewan [Saskatoon] (U of S), Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Department of Groundwater Management, Deltares, Delft, University of Birmingham [Birmingham], Agency for the Assessment and Application of Technology, Imperial College London, Beykent University [Istanbul], University of Freiburg [Freiburg], University of Bristol [Bristol], Cabot Institute, Hellenic Mediterranean University, Greece, Centre de Recherche en Géographie (LOTERR), Université de Lorraine (UL), Research Institute for Geo-hydrological Protection [Perugia] (IRPI), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Interactions Sol Plante Atmosphère (UMR ISPA), Ecole Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine (Bordeaux Sciences Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Massachusetts Institute of Technology (MIT), Università Iuav di Venezia = Iuav University of Venice (IUAV), Foundation for Research and Technology - Hellas (FORTH), Pontificia Bolivariana University, Faculty of Civil Engineering [Bucaramanga], California State University [Long Beach] (CSULB ), Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI), Emil Racoviță Institute of Speleology (ERIS), Romanian Academy, University Stefan cel Mare of Suceava (USU), Water Problems Institute of the Russian Academy of Sciences, Russian Academy of Sciences [Moscow] (RAS), University of Sciences [Ho Chi Minh City] (HCMC), Ho Chi Minh City University of Science (HCMUS), ENVIRONMENT AGENCY BRISTOL GBR, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Technical University of Crete [Chania], Servicio Nacional de Meteorología e Hidrología del Perú, University of Barcelona, British Geological Survey [Wallingford], British Geological Survey (BGS), Centre of Natural Hazards and Disaster Science [Uppsala], Uppsala University, Pennsylvania State University (Penn State), Penn State System, Escola de Engenharia de São Carlos (EESC-USP), Universidade de São Paulo = University of São Paulo (USP), Deltares [The Netherlands], Trelleborg municipality, Lund University [Lund], Institute of Environmental Science and Geography [Potsdam], University of Potsdam = Universität Potsdam, Hanoi University of Science and Technology (HUST), Vietnam National University Ho Chi Minh City, University of Technology, Vietnam National University - Ho Chi Minh City (Faculty of Chemical Engineering), Ho Chi Minh City University of Technology (HCMUT), OE OBSERVATORI DE L'EBRE RAMON LLULL UNIVERSITY ROQUETES ESP, Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), Otto-von-Guericke-Universität Magdeburg = Otto-von-Guericke University [Magdeburg] (OVGU), Center for Environmental and Geographic Information Services (CEGIS), Institute of Meteorology and Water Management - National Research Institute (IMGW - PIB), Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China, Tsinghua University [Beijing] (THU), Royal Botanical Gardens Kew [London], KWR Watercycle Research Institute, Utrecht University [Utrecht], University of Nebraska–Lincoln, University of Nebraska System, Nanjing University (NJU), Institute of Hydraulic Engineering and Water Resources Management, Vienna University of Technology (TU Wien), Institute for Water Education (IHE Delft ), and European Project: 01003276
Subjects: General Science & Technology, [SDE.MCG]Environmental Sciences/Global Changes, hydrology, datasets as topic, Oceanografi, hydrologi och vattenresurser, Settore SECS-P/06 - Economia Applicata, risk management, Flood, DISASTER LOSSES, Oceanography, Hydrology and Water Resources, extreme weather, Natural disasters, Canvi climàtic, [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology, ADAPTATION, humans, Multidisciplinary, Science & Technology, Drought, droughts, HAZARD, Catàstrofes naturals, [SHS.GEO]Humanities and Social Sciences/Geography, Floods, internationality, Climatic change, Multidisciplinary Sciences, SOCIAL VULNERABILITY, climate change, [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology, floods, Inundacions, ENGENHARIA HIDRÁULICA, Science & Technology - Other Topics, MYRIAD-EU
Abstract: Risk management has reduced vulnerability to floods and droughts globally1,2, yet their impacts are still increasing3. An improved understanding of the causes of changing impacts is therefore needed, but has been hampered by a lack of empirical data4,5. On the basis of a global dataset of 45 pairs of events that occurred within the same area, we show that risk management generally reduces the impacts of floods and droughts but faces difficulties in reducing the impacts of unprecedented events of a magnitude not previously experienced. If the second event was much more hazardous than the first, its impact was almost always higher. This is because management was not designed to deal with such extreme events: for example, they exceeded the design levels of levees and reservoirs. In two success stories, the impact of the second, more hazardous, event was lower, as a result of improved risk management governance and high investment in integrated management. The observed difficulty of managing unprecedented events is alarming, given that more extreme hydrological events are projected owing to climate change3.
Published: 2022
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34. Detection of Risky Situations for Frail Adults With Hybrid Neural Networks on Multimodal Health Data

Author: Rupayan Mallick, Thinhinane Yebda, Jenny Benois-Pineau, Akka Zemmari, Marion Pech, Helene Amieva, Laboratoire Bordelais de Recherche en Informatique (LaBRI), Université de Bordeaux (UB)-École Nationale Supérieure d'Électronique, Informatique et Radiocommunications de Bordeaux (ENSEIRB)-Centre National de la Recherche Scientifique (CNRS), Inria Chile, Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad de Concepción - University of Concepcion [Chile], INSERM-TRANSFERT [Paris] (IT), and Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: Hardware and Architecture, Signal Processing, Media Technology, [INFO]Computer Science [cs], Software, Computer Science Applications
Abstract: In healthcare applications, the multimedia methodology is applied to multimodal signals and visual data. This article focuses on the detection of risk situations of frail people from lifelog multimodal signals and video recorded with wearable sensors. We propose a hybrid 3D convolutional neural network (3DCNN) and gated recurrent unit (GRU) (3DCNN-GRU) deep architecture with two branches. The first branch is a GRU network with a global attention block for classification of multisensory signal data. The second branch is a 3DCNN with windowing synchronized with multidimensional time-series signals. Two branches of the neural network are fused yielding promising results. The method produces 83.26% accuracy with dataset BIRDS. Benchmarking is also fulfilled on a publicly available dataset in action recognition.
Published: 2022
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35. GOODS-ALMA 2.0:Starbursts in the main sequence reveal compact star formation regulating galaxy evolution prequenching

Author: C. Gómez-Guijarro, D. Elbaz, M. Xiao, V. I. Kokorev, G. E. Magdis, B. Magnelli, E. Daddi, F. Valentino, M. T. Sargent, M. Dickinson, M. Béthermin, M. Franco, A. Pope, B. S. Kalita, L. Ciesla, R. Demarco, H. Inami, W. Rujopakarn, X. Shu, T. Wang, L. Zhou, D. M. Alexander, F. Bournaud, R. Chary, H. C. Ferguson, S. L. Finkelstein, M. Giavalisco, D. Iono, S. Juneau, J. S. Kartaltepe, G. Lagache, E. Le Floc’h, R. Leiton, L. Leroy, L. Lin, K. Motohara, J. Mullaney, K. Okumura, M. Pannella, C. Papovich, E. Treister, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), University of Copenhagen = Københavns Universitet (UCPH), Danmarks Tekniske Universitet = Technical University of Denmark (DTU), University of Sussex, Community Science and Data Center, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), University of Hertfordshire [Hatfield] (UH), University of Massachusetts [Amherst] (UMass Amherst), University of Massachusetts System (UMASS), Universidad de Concepción - University of Concepcion [Chile], Hiroshima University, Chulalongkorn University [Bangkok], Anhui Normal University, Nanjing University (NJU), Durham University, California Institute of Technology (CALTECH), Space Telescope Science Institute (STSci), University of Texas at Austin [Austin], National Astronomical Observatory of Japan (NAOJ), Rochester Institute of Technology, Academia Sinica, The University of Tokyo (UTokyo), University of Sheffield [Sheffield], Università degli studi di Trieste = University of Trieste, Texas A&M University [College Station], and Pontificia Universidad Católica de Chile (UC)
Subjects: submillimeter: galaxies, SPECTROSCOPIC SURVEY, Cosmology and Nongalactic Astrophysics (astro-ph.CO), SIMILAR-TO 3, MASS-METALLICITY RELATION, INFRARED-EMISSION, structure [Galaxies], FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, star formation [Galaxies], star formation, high-redshift, high-redshift [Galaxies], galaxies [Submillimeter], galaxies: high-redshift, galaxies, evolution, DUST TEMPERATURES, Astrophysics::Solar and Stellar Astrophysics, submillimeter, structure, Astrophysics::Galaxy Astrophysics, FORMING GALAXIES, SUBMILLIMETER GALAXIES, galaxies: fundamental parameters, Astronomy and Astrophysics, evolution [Galaxies], Astrophysics - Astrophysics of Galaxies, ORIGINS DEEP SURVEY, MOLECULAR GAS FRACTIONS, Space and Planetary Science, galaxies: star formation, Astrophysics of Galaxies (astro-ph.GA), fundamental parameters [Galaxies], galaxies: structure, Astrophysics::Earth and Planetary Astrophysics, galaxies: evolution, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], fundamental parameters, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: Compact star formation appears to be generally common in dusty star-forming galaxies (SFGs). However, its role in the framework set by the scaling relations in galaxy evolution remains to be understood. In this work we follow up on the galaxy sample from the GOODS-ALMA 2.0 survey, an ALMA blind survey at 1.1mm covering a continuous area of 72.42arcmin$^2$ using two array configurations. We derived physical properties, such as star formation rates, gas fractions, depletion timescales, and dust temperatures for the galaxy sample built from the survey. There exists a subset of galaxies that exhibit starburst-like short depletion timescales, but they are located within the scatter of the so-called main sequence of SFGs. These are dubbed starbursts in the main sequence and display the most compact star formation and they are characterized by the shortest depletion timescales, lowest gas fractions, and highest dust temperatures of the galaxy sample, compared to typical SFGs at the same stellar mass and redshift. They are also very massive, accounting for $\sim 60\%$ of the most massive galaxies in the sample ($\log (M_{\rm{*}}/M_{\odot}) > 11.0$). We find trends between the areas of the ongoing star formation regions and the derived physical properties for the sample, unveiling the role of compact star formation as a physical driver of these properties. Starbursts in the main sequence appear to be the extreme cases of these trends. We discuss possible scenarios of galaxy evolution to explain the results drawn from our galaxy sample. Our findings suggest that the star formation rate is sustained in SFGs by gas and star formation compression, keeping them within the main sequence even when their gas fractions are low and they are presumably on the way to quiescence., Accepted by A&A. 26 pages, 13 figures
Published: 2022
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36. Shape sensitivity of eigenvalue functionals for scalar problems: computing the semi-derivative of a minimum

Author: Fabien Caubet, Marc Dambrine, Rajesh Mahadevan, Institut de Mathématiques de Toulouse UMR5219 (IMT), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Mathématiques et de leurs Applications [Pau] (LMAP), Université de Pau et des Pays de l'Adour (UPPA)-Centre National de la Recherche Scientifique (CNRS), and Universidad de Concepción - University of Concepcion [Chile]
Subjects: Control and Optimization, shape sensitivity analysis, Applied Mathematics, eigenvalues of elliptic operators, generalized boundary condition, [MATH.MATH-OC]Mathematics [math]/Optimization and Control [math.OC], Mathematics::Spectral Theory, shape derivatives
Abstract: International audience; This paper is devoted to the computation of certain directional semi-derivatives of eigenvalue functionals of self-adjoint elliptic operators involving a variety of boundary conditions. A uniform treatment of these problems is possible by considering them as a problem of calculating the semi-derivative of a minimum with respect to a parameter. The applicability of this approach, which can be traced back to the works of Danskin and Zolésio, to the treatment of eigenvalue problems (where the full shape derivative may not exist, due to multiplicity issues), has been illustrated by Zolésio. Despite this, some of the recent literature on the shape sensitivity of eigenvalue problems still continue to employ methods such as the material derivative method or Lagrangian methods which seem less adapted to this class of problems. The Delfour-Zolésio approach does not seem to be fully exploited in the existing literature: we aim to recall the importance and the simplicity of these ideas, by applying it to the analysis of the shape sensitivity for eigenvalue functionals for a class of elliptic operators in the scalar setting (Laplacian or diffusion in heterogeneous media), thus recovering known results in the case of Dirichlet or Neumann boundary conditions and obtaining new results in the case of Steklov or Wentzell boundary conditions.
Published: 2022

37. Lignocellulosic Micro and Nanofibrillated Cellulose Produced by Steam Explosion for Wood Adhesive Formulations

Author: Miguel Peirera, Raphael Becar, Evelyne Mauret, Felipe Guzman, C閟ar Segovia, Cecilia Fuentealba, Saad Nader, Nicolas Brosse, Laboratoire d'Etude et de Recherche sur le Matériau Bois (LERMAB), Université de Lorraine (UL), Centre d'essai textile lorrain (CETELOR), Laboratoire Génie des procédés papetiers (LGP2), Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA), Universidad de Concepción - University of Concepcion [Chile], Franco-Chilean EcosSud Collaborative Program C18E05, ANID PIA/Apoyo CCTE AFB170007 of Universidad de Concepción, ANR-11-LABX-0002,ARBRE,Recherches Avancées sur l'Arbre et les Ecosytèmes Forestiers(2011), and ANR-11-LABX-0030,TEC XXI,Ingénierie de la Complexité : la mécanique et ses interfaces au service des enjeux sociétaux du 21iè(2011)
Subjects: Materials science, [CHIM.ORGA]Chemical Sciences/Organic chemistry, Materials Science (miscellaneous), Environmental Science (miscellaneous), [SPI.MAT]Engineering Sciences [physics]/Materials, chemistry.chemical_compound, [CHIM.POLY]Chemical Sciences/Polymers, chemistry, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, Adhesive, Cellulose, Composite material, ComputingMilieux_MISCELLANEOUS, Steam explosion
Abstract: International audience
Published: 2022
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38. StaNdaRT: a repository of standardised test models and outputs for supernova radiative transfer

Author: Stéphane Blondin, Sergei Blinnikov, Fionntan P. Callan, Christine E. Collins, Luc Dessart, Wesley Even, Andreas Flörs, Andrew G. Fullard, D. John Hillier, Anders Jerkstrand, Daniel Kasen, Boaz Katz, Wolfgang Kerzendorf, Alexandra Kozyreva, Jack O’Brien, Ezequiel A. Pássaro, Nathaniel Roth, Ken J. Shen, Luke Shingles, Stuart A. Sim, Jaladh Singhal, Isaac G. Smith, Elena Sorokina, Victor P. Utrobin, Christian Vogl, Marc Williamson, Ryan Wollaeger, Stan E. Woosley, Nahliel Wygoda, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU), Laboratoire Franco-Chilien d'Astronomie (LFCA), Universidad de Chile = University of Chile [Santiago] (UCHILE)-Pontificia Universidad Católica de Chile (UC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Universidad de Concepción - University of Concepcion [Chile], Institute of Theoretical and Experimental Physics [Moscow] (ITEP), National Research Center 'Kurchatov Institute' (NRC KI), Sternberg Astronomical Institute [Moscow], Lomonosov Moscow State University (MSU), Kavli Institute for the Physics and Mathematics of the Universe [Tokyo] (Kavli IPMU), The University of Tokyo Institutes for Advanced Study (UTIAS), The University of Tokyo (UTokyo)-The University of Tokyo (UTokyo), Queen's University [Belfast] (QUB), GSI Helmholtzzentrum für Schwerionenforschung (GSI), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Los Alamos National Laboratory (LANL), Michigan State University [East Lansing], Michigan State University System, Department of Physics and Astronomy [Pittsburgh], University of Pittsburgh (PITT), Pennsylvania Commonwealth System of Higher Education (PCSHE)-Pennsylvania Commonwealth System of Higher Education (PCSHE), Oskar Klein Centre [Stockholm], Stockholm University, Department of Astronomy [Berkeley], University of California [Berkeley] (UC Berkeley), University of California (UC)-University of California (UC), Lawrence Berkeley National Laboratory [Berkeley] (LBNL), Weizmann Institute of Science [Rehovot, Israël], Max-Planck-Institut für Astrophysik (MPA), Max-Planck-Gesellschaft, Facultad de Ciencias Astronómicas y Geofísicas [La Plata] (FCAGLP), Universidad Nacional de la Plata [Argentine] (UNLP), University of California (UC), Institute of Astronomy of the Russian Academy of Sciences (INASAN), Russian Academy of Sciences [Moscow] (RAS), New York University [New York] (NYU), NYU System (NYU), Department of Physics and Astronomy [BatonRouge] (LSU), Louisiana State University (LSU), University of California [Santa Cruz] (UC Santa Cruz), and Nuclear Research Center-Negev (NRCN)
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], general [Supernovae], FOS: Physical sciences, Astronomy and Astrophysics, supernovae: general, Astrophysics - Solar and Stellar Astrophysics, radiative transfer, [SDU]Sciences of the Universe [physics], Space and Planetary Science, Radiative transfer, ddc:520, Astrophysics - High Energy Astrophysical Phenomena, Solar and Stellar Astrophysics (astro-ph.SR)
Abstract: We present the first results of a comprehensive supernova (SN) radiative-transfer (RT) code-comparison initiative (StaNdaRT), where the emission from the same set of standardized test models is simulated by currently-used RT codes. A total of ten codes have been run on a set of four benchmark ejecta models of Type Ia supernovae. We consider two sub-Chandrasekhar-mass ($M_\mathrm{tot} = 1.0$ M$_\odot$) toy models with analytic density and composition profiles and two Chandrasekhar-mass delayed-detonation models that are outcomes of hydrodynamical simulations. We adopt spherical symmetry for all four models. The results of the different codes, including the light curves, spectra, and the evolution of several physical properties as a function of radius and time, are provided in electronic form in a standard format via a public repository. We also include the detailed test model profiles and several python scripts for accessing and presenting the input and output files. We also provide the code used to generate the toy models studied here. In this paper, we describe in detail the test models, radiative-transfer codes and output formats and provide access to the repository. We present example results of several key diagnostic features., Accepted for publication in A&A. 27 pages, 12 figures (v4: updated to match published version). The ejecta models and output files from the simulations are available at https://github.com/sn-rad-trans/data1
Published: 2022
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39. Similarities and Contrasts in Time-Mean Striated Surface Tracers in Pacific Eastern Boundary Upwelling Systems: The Role of Ocean Currents in Their Generation

Author: Belmadani, Ali, Auger, Pierre-Amael, Maximenko, Nikolai, Gomez, Katherine, Cravatte, Sophie, Direction Inter-Régionale des Antilles-Guyane (DIRAG), Météo France, Departamento de Geofısica, Universidad de Concepción [Chile], Laboratoire d'Océanographie Physique et Spatiale (LOPS), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS), International Pacific Research Center (IPRC), School of Ocean and Earth Science and Technology (SOEST), University of Hawai‘i [Mānoa] (UHM)-University of Hawai‘i [Mānoa] (UHM), Escuela de Ciencias del Mar, Pontificio Universidad Catolica de Valparaiso, Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Météo-France, Universidad de Concepción - University of Concepcion [Chile], Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), and Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)
Subjects: [SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], [PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn], QC120-168.85, eastern boundaries, Pacific Ocean, [SDV.EE.ECO]Life Sciences [q-bio]/Ecology, environment/Ecosystems, Descriptive and experimental mechanics, sea surface temperature, striations, chlorophyll-a, Thermodynamics, [MATH.MATH-AP]Mathematics [math]/Analysis of PDEs [math.AP], [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], QC310.15-319, sea surface salinity, ComputingMilieux_MISCELLANEOUS, [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography, satellite data
Abstract: Eastern boundary upwelling systems feature strong zonal gradients of physical and biological properties between cool, productive coastal oceans and warm, oligotrophic subtropical gyres. Zonal currents and jets (striations) are therefore likely to contribute to the transport of water properties between coastal and open oceanic regions. For the first time, multi-sensor satellite data are used to characterize the time-mean signatures of striations in sea surface temperature (SST), salinity (SSS), and chlorophyll-a (Chl-a) in subtropical eastern North/South Pacific (ENP/ESP) upwelling systems. In the ENP, tracers exhibit striated patterns extending up to ~2500 km offshore. Striated signals in SST and SSS are highly correlated with quasi-zonal jets, suggesting that these jets contribute to SST/SSS mesoscale patterns via zonal advection. Striated Chl-a anomalies are collocated with sea surface height (SSH) bands, a possible result of mesoscale eddy trains trapping nutrients and forming striated signals. In the ESP, the signature of striations is only found in SST and coincides with the SSH bands, consistently with quasi-zonal jets located outside major zonal tracer gradients. An interplay between large-scale SST/SSS advection by the quasi-zonal jets, mesoscale SST/SSS advection by the large-scale meridional flow, and eddy advection may explain the persistent ENP hydrographic signature of striations. These results underline the importance of quasi-zonal jets for surface tracer structuring at the mesoscale.
Published: 2021
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40. The global loss of floristic uniqueness

Author: Qiang Yang, Patrick Weigelt, Trevor S. Fristoe, Zhijie Zhang, Holger Kreft, Anke Stein, Hanno Seebens, Wayne Dawson, Franz Essl, Christian König, Bernd Lenzner, Jan Pergl, Robin Pouteau, Petr Pyšek, Marten Winter, Aleksandr L. Ebel, Nicol Fuentes, Eduardo L. H. Giehl, John Kartesz, Pavel Krestov, Toomas Kukk, Misako Nishino, Andrey Kupriyanov, Jose Luis Villaseñor, Jan J. Wieringa, Abida Zeddam, Elena Zykova, Mark van Kleunen, University of Konstanz, University of Göttingen - Georg-August-Universität Göttingen, Senckenberg Biodiversity and Climate Research Centre (SBiK-F), Goethe-Universität Frankfurt am Main-Senckenberg – Leibniz Institution for Biodiversity and Earth System Research - Senckenberg Gesellschaft für Naturforschung, Leibniz Association-Leibniz Association, Duke University [Durham], University of Vienna [Vienna], University of Potsdam, Institute of Botany of the Czech Academy of Sciences (IB / CAS), Czech Academy of Sciences [Prague] (CAS), Botanique et Modélisation de l'Architecture des Plantes et des Végétations (UMR AMAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), German Centre for Integrative Biodiversity Research (iDiv), Tomsk State University [Tomsk], Departamento de Botanica, Facultad de Ciencias Naturales y Oceanograficas, Universidad de Concepción [Chile], Universidade Federal de Santa Catarina = Federal University of Santa Catarina [Florianópolis] (UFSC), Biota of North America Program (BONAP), Estonian University of Life Sciences (EMU), Siberian Branch of the Russian Academy of Sciences (SB RAS), Universidad Nacional Autónoma de México (UNAM), Naturalis Biodiversity Centre, Universiteit Leiden [Leiden], Taizhou University, Georg-August-University = Georg-August-Universität Göttingen, Durham University, University of Potsdam = Universität Potsdam, Universidad de Concepción - University of Concepcion [Chile], Universidad Nacional Autónoma de México = National Autonomous University of Mexico (UNAM), and Naturalis Biodiversity Center [Leiden]
Subjects: 0106 biological sciences, Science, Climate, General Physics and Astronomy, biogeography, ecology, loss of uniqueness, global flora, naturalization of alien plants, [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy, 010603 evolutionary biology, 01 natural sciences, General Biochemistry, Genetics and Molecular Biology, Article, 03 medical and health sciences, [SDV.EE.ECO]Life Sciences [q-bio]/Ecology, environment/Ecosystems, ddc:570, Macroecology, Ecosystem, Phylogeny, 030304 developmental biology, 0303 health sciences, Multidisciplinary, General Chemistry, Biodiversity, 15. Life on land, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics, Plants, Biogeography, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, Introduced Species
Abstract: Regional species assemblages have been shaped by colonization, speciation and extinction over millions of years. Humans have altered biogeography by introducing species to new ranges. However, an analysis of how strongly naturalized plant species (i.e. alien plants that have established self-sustaining populations) affect the taxonomic and phylogenetic uniqueness of regional floras globally is still missing. Here, we present such an analysis with data from native and naturalized alien floras in 658 regions around the world. We find strong taxonomic and phylogenetic floristic homogenization overall, and that the natural decline in floristic similarity with increasing geographic distance is weakened by naturalized species. Floristic homogenization increases with climatic similarity, which emphasizes the importance of climate matching in plant naturalization. Moreover, floristic homogenization is greater between regions with current or past administrative relationships, indicating that being part of the same country as well as historical colonial ties facilitate floristic exchange, most likely due to more intensive trade and transport between such regions. Our findings show that naturalization of alien plants threatens taxonomic and phylogenetic uniqueness of regional floras globally. Unless more effective biosecurity measures are implemented, it is likely that with ongoing globalization, even the most distant regions will lose their floristic uniqueness., Humans have altered plant biogeography by introducing species from one region to another, but an analysis of how naturalized plant species affect the uniqueness of regional floras around the world was missing. This study presents an analysis using data from native and naturalized alien floras in 658 regions, finding strong taxonomic and phylogenetic floristic homogenization overall.
Published: 2021
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41. Duration of diaphragmatic inactivity after endotracheal intubation of critically ill patients

Author: Jan O. Friedrich, Sebastian Dubo, Ewan C. Goligher, Leo M. A. Heunks, Michael C. Sklar, Fabiana Madotto, Michela Rauseo, Ibrahim Soliman, Ricard M. Artigas, Nuttapol Rittayamai, L. Felipe Damiani, Rémi Coudroy, Lu Chen, Irene Telias, Annemijn H. Jonkman, Guang-Qiang Chen, Laurent Brochard, Tài Pham, Martin Dres, Christer Sinderby, Intensive care medicine, ACS - Pulmonary hypertension & thrombosis, University of Toronto, St. Michael's Hospital, Università degli Studi di Milano, IRCCS Policlinico San Donato, VU University Medical Center [Amsterdam], Università degli Studi di Foggia - University of Foggia, Pontificia Universidad Católica de Chile (UC), Universidad de Concepción - University of Concepcion [Chile], Universidad de la frontera [Chile], Siriraj Hospital, Mahidol University, Mahidol University [Bangkok], Mount Sinai Health System, Service de Pneumologie et Réanimation Médicale [CHU Pitié-Salpêtrière] (Département ' R3S '), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), CIC - Poitiers, Université de Poitiers-Centre hospitalier universitaire de Poitiers (CHU Poitiers)-Direction Générale de l'Organisation des Soins (DGOS)-Institut National de la Santé et de la Recherche Médicale (INSERM), AP-HP Hôpital Bicêtre (Le Kremlin-Bicêtre), Università degli Studi di Foggia = University of Foggia (Unifg), HAL-SU, Gestionnaire, and Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)
Subjects: Male, Time Factors, [SDV.MHEP.PHY] Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO], Sedation, medicine.medical_treatment, Critical Illness, Diaphragm, Diaphragmatic breathing, Critical Care and Intensive Care Medicine, Electrical activity of the diaphragm, 03 medical and health sciences, 0302 clinical medicine, Mechanical ventilation, Interquartile range, Severity of illness, [SDV.MHEP.PHY]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO], Intubation, Intratracheal, Medicine, Intubation, Humans, Prospective Studies, Aged, Aged, 80 and over, business.industry, Research, lcsh:Medical emergencies. Critical care. Intensive care. First aid, 030208 emergency & critical care medicine, lcsh:RC86-88.9, Middle Aged, Respiration, Artificial, 3. Good health, Diaphragm (structural system), Critical care, 030228 respiratory system, Anesthesia, Breathing, Female, medicine.symptom, Sedentary Behavior, business
Abstract: BackgroundIn patients intubated for mechanical ventilation, prolonged diaphragm inactivity could lead to weakness and poor outcome. Time to resume a minimal diaphragm activity may be related to sedation practice and patient severity.MethodsProspective observational study in critically ill patients. Diaphragm electrical activity (EAdi) was continuously recorded after intubation looking for resumption of a minimal level of diaphragm activity (beginning of the first 24 h period with median EAdi > 7 µV, a threshold based on literature and correlations with diaphragm thickening fraction). Recordings were collected until full spontaneous breathing, extubation, death or 120 h. A 1 h waveform recording was collected daily to identify reverse triggering.ResultsSeventy-five patients were enrolled and 69 analyzed (mean age ± standard deviation 63 ± 16 years). Reasons for ventilation were respiratory (55%), hemodynamic (19%) and neurologic (20%). Eight catheter disconnections occurred. The median time for resumption of EAdi was 22 h (interquartile range 0–50 h); 35/69 (51%) of patients resumed activity within 24 h while 4 had no recovery after 5 days. Late recovery was associated with use of sedative agents, cumulative doses of propofol and fentanyl, controlled ventilation and age (older patients receiving less sedation). Severity of illness, oxygenation, renal and hepatic function, reason for intubation were not associated with EAdi resumption. At least 20% of patients initiated EAdi with reverse triggering.ConclusionLow levels of diaphragm electrical activity are common in the early course of mechanical ventilation: 50% of patients do not recover diaphragmatic activity within one day. Sedatives are the main factors accounting for this delay independently from lung or general severity.Trial RegistrationClinicalTrials.gov (NCT02434016). Registered on April 27, 2015. First patients enrolled June 2015.
Published: 2021
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42. A Graph Neural Network with Spatio-Temporal Attention for Multi-Sources Time Series Data: An Application to Frost Forecast

Author: Luis Martí, Nayat Sanchez-Pi, Hernan Lira, Inria Chile, Universidad Diego Portales [Santiago] (UDP)-Universidad de la frontera [Chile]-Pontificia Universidad Católica de Chile (UC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Pontificia Universidad Católica de Valparaíso (PUCV)-Universidad Adolfo Ibáñez [Santiago]-Universidad de Valparaiso [Chile]-Universidad Tecnica Federico Santa Maria [Valparaiso] (UTFSM)-Universidad de Concepción - University of Concepcion [Chile], and This research was funded by CORFO/ANID International Centers of Excellence Program 10CEII-9157 Inria Chile and CORFO 'Crea y Valida' Project 19CV-107497.
Subjects: Time Factors, [INFO.INFO-NE]Computer Science [cs]/Neural and Evolutionary Computing [cs.NE], frost forecasting, graph neural networks, spatio-temporal attention, [SDE.ES]Environmental Sciences/Environmental and Society, Biochemistry, Atomic and Molecular Physics, and Optics, [INFO.INFO-AI]Computer Science [cs]/Artificial Intelligence [cs.AI], Analytical Chemistry, Machine Learning, Frost forecasting, [INFO.INFO-LG]Computer Science [cs]/Machine Learning [cs.LG], [SDV.SA.STA]Life Sciences [q-bio]/Agricultural sciences/Sciences and technics of agriculture, Graph Neural Networks, Neural Networks, Computer, Spatio-temporal attention, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, Electrical and Electronic Engineering, Instrumentation, Weather, Forecasting
Abstract: International audience; Frost forecast is an important issue in climate research because of its economic impact on several industries. In this study, we propose GRAST-Frost, a graph neural network (GNN) with spatio-temporal architecture, which is used to predict minimum temperatures and the incidence of frost. We developed an IoT platform capable of acquiring weather data from an experimental site, in addition data was collected from 10 weather stations in close proximity to the aforementioned site. The model considers spatial and temporal relations while processing multiple time series simultaneously. Performing predictions of 6, 12, 24 and 48 hours in advance, this model outperforms classical time series forecasting methods including, linear and non-linear machine learning methods, simple deep learning architectures and non-graph deep learning models. In addition, we show that our model significantly improves on the current state of the art of frost forecasting methods.
Published: 2021
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43. A SPHERE survey of self-shadowed planet-forming disks

Author: A. Garufi, C. Dominik, C. Ginski, M. Benisty, R. G. van Holstein, Th. Henning, N. Pawellek, C. Pinte, H. Avenhaus, S. Facchini, R. Galicher, R. Gratton, F. Ménard, G. Muro-Arena, J. Milli, T. Stolker, A. Vigan, M. Villenave, T. Moulin, A. Origne, F. Rigal, J.-F. Sauvage, L. Weber, INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), Astronomical Institute Anton Pannekoek (AI PANNEKOEK), University of Amsterdam [Amsterdam] (UvA), Laboratoire Franco-Chilien d'Astronomie (LFCA), Universidad de Chile = University of Chile [Santiago] (UCHILE)-Pontificia Universidad Católica de Chile (UC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Universidad de Concepción - University of Concepcion [Chile], Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), Centre National d'Études Spatiales [Toulouse] (CNES)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France -Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France, Leiden Observatory [Leiden], Universiteit Leiden, Lakeside Labs [Klagenfurt], University of Cambridge [UK] (CAM), Università degli Studi di Milano = University of Milan (UNIMI), European Southern Observatory (ESO), Observatoire de Paris, Université Paris sciences et lettres (PSL), INAF - Osservatorio Astronomico di Padova (OAPD), Institute for Particle Physics and Astrophysics [ETH Zürich] (IPA), Department of Physics [ETH Zürich] (D-PHYS), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich)- Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), DOTA, ONERA, Université Paris Saclay [Palaiseau], ONERA-Université Paris-Saclay, Geneva Observatory, Université de Genève = University of Geneva (UNIGE), SPHERE was funded by ESO, with additional contributions from CNRS (France), MPIA (Germany), INAF (Italy), FINES (Switzerland) and NOVA (Netherlands). SPHERE also received funding from the European Commission Sixth and Seventh Framework Programmes as part of the Optical Infrared Coordination Network for Astronomy (OPTICON) under grant number RII3-Ct-2004-001566 for FP6 (2004–2008), grant number 226604 for FP7 (2009–2012) and grant number 312430 for FP7 (2013–2016). We also acknowledge financial support from the Programme National de Planètologie (PNP) and the Programme National de Physique Stellaire (PNPS) of CNRS-INSU in France. This paper also makes use of the following ALMA data: ADS/JAO.ALMA#2015.1.01600.S and 2015.1.00847.S. ALMAis a partnership of ESO (representing its member states), NSF (USA) and NINS (Japan), together with NRC (Canada), MOST and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO and NAOJ.This work was supported by the PRIN-INAF 2016 'The Cradle of Life – GENESIS-SKA (General Conditions in Early Planetary Systems for the rise of life with SKA)', the project PRIN-INAF-MAIN-STREAM 2017 'Protoplanetary disks seen through the eyes of new-generation instruments', the PRIN-INAF 2019 'Planetary systems at young ages (PLATEA)', the program PRIN-MIUR 2015 STARS in the CAOS – Simulation Tools for Astrochemical Reactivity and Spectroscopy in the Cyberinfrastructure for Astrochemical Organic Species (2015F59J3R, MIUR Ministero dell’Istruzione, dell’Università, della Ricerca e della Scuola Normale Superiore), the European Marie Sklodowska-Curie Actions under the European Union’s Horizon 2020 research and innovation program through the Project 'AstroChemistry Origins' (ACO), Grant No 811312, INAF/Frontiera (Fostering high ResolutiON Technology and Innovation for Exoplanets and Research in Astrophysics) through the 'Progetti Premiali' funding scheme of the Italian Ministry of Education, University, and Research, as well as NSF grants AST- 1514670 and NASA NNX16AB48G, the Italian Ministero dell’Istruzione, Università e Ricerca through the grant Progetti Premiali 2012 – iALMA (CUP C52I13000140001).C.D. and C.G. acknowledge support from the NWO TOP grant 'Herbig Ae/Be stars, Rosetta stones for understanding the formation of planetary systems', project number 614.001.552. T.H. acknowledges support from the European Research Council under the Horizon 2020 Framework Program via the ERC Advanced Grant Origins 83 24 28., European Project: 811312, European Project: 832428, and Low Energy Astrophysics (API, FNWI)
Subjects: Physics, Earth and Planetary Astrophysics (astro-ph.EP), Protoplanetary disks, [PHYS]Physics [physics], Polarimetric, Astronomy, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics - Astrophysics of Galaxies, [SPI]Engineering Sciences [physics], Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, Planet, Astrophysics of Galaxies (astro-ph.GA), Techniques: Polarimetric, Astrophysics::Earth and Planetary Astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), Astrophysics::Galaxy Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract: To date, nearly two hundred planet-forming disks have been imaged with high resolution. Our propensity to study bright and extended objects is however biasing our view of the disk demography. In this work, we contribute to alleviate this bias by analyzing fifteen disks targeted with VLT/SPHERE that look faint in scattered light. Sources were selected based on a low far-IR excess from the spectral energy distribution. The comparison with the ALMA images available for a few sources shows that the scattered light surveyed by these datasets is only detected from a small portion of the disk extent. The mild anti-correlation between the disk brightness and the near-IR excess demonstrates that these disks are self-shadowed: the inner disk rim intercepts much starlight and leaves the outer disk in penumbra. Based on the uniform distribution of the disk brightness in scattered light across all spectral types, self-shadowing would act similarly for inner rims at a different distance from the star. We discuss how the illumination pattern of the outer disk may evolve with time. Some objects in the sample are proposed to be at an intermediate stage toward bright disks from the literature with either no shadow or with sign of azimuthally confined shadows., Accepted for publication in A\&A
Published: 2021
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44. Variant A of the Deformed Wings Virus Alters the Olfactory Sensitivity and the Expression of Odorant Binding Proteins on Antennas of Apis mellifera

Author: Anne Dalmon, Diego Silva, Ricardo Ceballos, Nolberto Arismendi, Marisol Vargas, Universidad de Concepción - University of Concepcion [Chile], Instituto de Investigaciones Agropecuarias (INIA), Universidad Santo Tomas, Abeilles et Environnement (AE), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and FONDECYT from the National Research and Development Agency (ANID, Ex-CONICYT), Chile - n°1211688 et n°1210942
Subjects: 0106 biological sciences, honey bees, Odorant binding, Science, OBPs, Olfaction, 01 natural sciences, Article, Virus, 03 medical and health sciences, Deformed wing virus, Gene expression, Gene, 030304 developmental biology, 2. Zero hunger, Genetics, olfactory responses, 0303 health sciences, biology, fungi, [SDV.BBM.BM]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, biology.organism_classification, antennae, Worker bee, [SDV.BA.ZI]Life Sciences [q-bio]/Animal biology/Invertebrate Zoology, 010602 entomology, Insect Science, DWV-A, Viral load
Abstract: Simple Summary Honey bees, Apis melllifera, are the most commonly managed bee in the world for pollination services. However, worldwide continuous colony losses have been reported for almost a decade. One factor of these losses is associated to pathogens being the virus one of the most important problems in honey bee health. One of the known viruses that affect the honey bee population is deformed wing virus (DWV). DWV causes physical malformation and behavioral disturbances, but also, this virus can be found in the antenna affecting the anatomical integrity of infected areas, which could compromise normal antennal functioning associated to aroma perception. Thus, we evaluate olfactory sensitivity and the expression of antenna-specific odorant-binding proteins (OBP) genes in honey bees inoculated with variant A of the DWV. We performed olfactory sensitivity analysis using the essential oils Eucalyptus globulus and Mentha piperita, but also, and molecular analysis of gene expression of nine OBPs. We found that the high level of replication of DWV-A in the antennae decreased the olfactory sensitivity and led to a down-regulation of some OBPs in middle- and forager-age worker bees. Thus, DWV-A infection in adults of honey bees could compromise volatile compound recognition inside the hive and outside the hive. Abstract Insects have a highly sensitive sense of smell, allowing them to perform complex behaviors, such as foraging and peer recognition. Their sense of smell is based on the recognition of ligands and is mainly coordinated by odorant-binding proteins (OBPs). In Apis mellifera, behavior can be affected by different pathogens, including deformed wing virus (DWV) and its variants. In particular, it has been shown that variant A of DWV (DWV-A) is capable of altering the ultra-cellular structure associated with olfactory activity. In this study was evaluated olfactory sensitivity and the expression of OBP genes in honey bees inoculated with DWV-A. Electroantennographic analyses (EAG) were carried out to determine the olfactory sensitivity to the essential oils Eucalyptus globulus and Mentha piperita. The expression of nine antenna-specific OBP genes and DWV-A load in inoculated bees was also quantified by qPCR. We observed an inverse relationship between viral load and olfactory sensitivity and the expression of some OBP proteins. Thus, high viral loads reduced olfactory sensitivity to essential oils and the gene expression of the OBP2, OBP5, OBP11, and OBP12 proteins on the antennas of middle- and forager-age bees. These results suggest that DWV-A could have negative effects on the processes of aroma perception by worker bees, affecting their performance in tasks carried out in and outside the colony.
Published: 2021
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45. Nickel(II)-Based Building Blocks with Schiff Base Derivatives: Experimental Insights and DFT Calculations

Author: Samia Kahlal, Jean Yves Saillard, Jean René Hamon, Thierry Roisnel, Néstor Novoa, David Carrillo, Carolina Manzur, Universidad de Concepción - University of Concepcion [Chile], Pontificia Universidad Católica de Valparaíso (PUCV), Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Fondo Nacional de Desarrollo Cientifico y Tecnologico [FONDECYT (Chile)] Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) CONICYT FONDECYT [1190034], GENCI French national computer center [a0090807367], Universidad de Concepción [Chile], Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)
Subjects: Materials science, Dimer, Pharmaceutical Science, chemistry.chemical_element, Sonogashira coupling, Organic chemistry, Schiff base complexes, 010402 general chemistry, DFT calculations, 01 natural sciences, Article, Analytical Chemistry, Sonogashira cross coupling, chemistry.chemical_compound, nickel, QD241-441, Drug Discovery, [CHIM]Chemical Sciences, Physical and Theoretical Chemistry, Schiff base, 010405 organic chemistry, Ligand, Nuclear magnetic resonance spectroscopy, X-ray crystal structure, 0104 chemical sciences, Nickel, Crystallography, chemistry, Chemistry (miscellaneous), Molecular Medicine, Density functional theory, Ternary operation
Abstract: We have recently reported a series of neutral square planar tridentate Schiff base (L) complexes of the general formula [(L)M(py)], showing relatively high first-order hyperpolarizabilities and NLO redox switching behavior. In the present study, new members of this family of compounds have been prepared with the objective to investigate their potential as building blocks in the on-demand construction of D-π-A push–pull systems. Namely, ternary nickel(II) building blocks of general formula [(LA/D)Ni(4-pyX)] (4–7), where LA/D stands for an electron accepting or donating dianionic O,N,O-tridentate Schiff base ligand resulting from the monocondensation of 2-aminophenol or its 4-substituted nitro derivative and β-diketones R-C(=O)CH2C(=O)CH3 (R = methyl, anisyl, ferrocenyl), and 4-pyX is 4-iodopyridine or 4-ethynylpyridine, were synthesized and isolated in 60–78% yields. Unexpectedly, the Sonogashira cross-coupling reaction between the 4-iodopyridine derivative 6 and 4-ethynylpyridine led to the formation of the bis(4-pyridyl) acetylene bridged centrosymmetric dimer [{(LD)Ni}2(µ2-py-C≡C-py)] (8). Complexes 4–8 were characterized by elemental analysis, FT-IR and NMR spectroscopy, single crystal X-ray diffraction and computational methods. In each compound, the four-coordinate Ni(II) metal ion adopts a square planar geometry with two nitrogen and two oxygen atoms as donors occupying trans positions. In 8, the Ni…Ni separation is of 13.62(14) Å. Experimental results were proved and explained theoretically exploiting Density Functional Theory calculations.
Published: 2021
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46. Error analysis of pressure reconstruction from discrete velocities

Author: Araya, Rodolfo, Bertoglio, Cristobal, Cárcamo, Cristian, Nolte, David, Uribe, Sergio, Universidad de Concepción - University of Concepcion [Chile], Bernoulli Institute for Mathematics and Computer Science and Artificial Intelligence, University of Groningen [Groningen], and Pontificia Universidad Católica de Chile (UC)
Subjects: [MATH.MATH-NA]Mathematics [math]/Numerical Analysis [math.NA]
Abstract: Magnetic Resonance Imaging allows to measure the three-dimensional velocity field in blood flows. There- fore, several methods have been proposed to reconstruct the pressure field from such measurements using the incompressible Navier-Stokes equations. However, those measurements are obtained at limited spatial resolution given by the voxel dimensions in the image. Therefore, the velocity entering to the right-hand-side corresponds to a piecewise linear interpolation of the exact velocity.In this work we propose a strategy for convergence analysis of state-of-the-art pressure reconstruction meth- ods. The methods analyzed are the the so called Pressure Poisson Estimator (PPE) and Stokes Estimator (STE). In the theoretical error analysis, we show that many terms of different convergence order appear. However, numerical results, show in academic examples that only the PPE may profit of increasing the polynomial order, and that the STE presents a higher accuracy than the PPE.Additionally, we compare the pressure estimation methods on real MRI data, assessing the impact of different spatial resolutions and polynomial degree on each of the methods. Here, the results are aligned with the academic test cases in terms of sensitivity to polynomial order and that the STE shows to be potentially more accurate when compared to reference pressure measurements.
Published: 2021

47. Synaptic dysregulation and hyperexcitability induced by intracellular amyloid beta oligomers

Author: Christian Peters, Jérôme Epsztein, Luis G. Aguayo, Rakez Kayed, Denisse Bascuñán, Urmi Sengupta, Peter James Morgan, Nicolas O Riffo-Lepe, Caroline Filippi, Braulio Muñoz, María Paz Espinoza, Romain Bourboulou, Eduardo J Fernández-Pérez, Universidad de Concepción - University of Concepcion [Chile], Institut de Neurobiologie de la Méditerranée [Aix-Marseille Université] (INMED - INSERM U1249), Institut National de la Santé et de la Recherche Médicale (INSERM)-Aix Marseille Université (AMU), George and Cynthia Mitchell Center for Neurodegenerative diseases, University of Texas Medical Branch at Galveston, The University of Texas Medical Branch (UTMB), and pellegrino, Christophe
Subjects: AMPA‐R, Aging, neuronal nitric oxide synthase, amyloidβ peptide, CLR, synaptic dysregulation, amyloid precursor protein, Hippocampal formation, chemistry.chemical_compound, 0302 clinical medicine, human AD brain-derived Aβ oligomers, Amyloid precursor protein, miniature excitatory post-synaptic currents, miniature post-synaptic currents, chelerythrine, evoked excitatory post-synaptic currents, action potentials, Aβ, APs, 0303 health sciences, hyperexcitability, eEPSC, mIPSC, Alzheimer's disease, eIPSC, NOS, Original Papers, iNOS, mEPSC, eNOS, [SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], Intracellular, α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid, synthetic Intracellular Aβ oligomers, Amyloid beta, Na v, nNOS, AMPA receptor, Biology, intracellular amyloid beta, Nitric oxide, voltage-dependent sodium channel, NO, 03 medical and health sciences, nitric oxide, nitric, mPSC, [SDV.NEU] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], 030304 developmental biology, endothelial nitric oxide synthase, Original Paper, inducible nitric oxide synthase, Cell Biology, evoked inhibitory post-synaptic currents, Chelerythrine, chemistry, miniature inhibitory post-synaptic currents, biology.protein, Retrograde signaling, h-iAβo, Neuroscience, iAβo, 030217 neurology & neurosurgery
Abstract: Intracellular amyloid beta oligomer (iAβo) accumulation and neuronal hyperexcitability are two crucial events at early stages of Alzheimer's disease (AD). However, to date, no mechanism linking iAβo with an increase in neuronal excitability has been reported. Here, the effects of human AD brain‐derived (h‐iAβo) and synthetic (iAβo) peptides on synaptic currents and action potential firing were investigated in hippocampal neurons. Starting from 500 pM, iAβo rapidly increased the frequency of synaptic currents and higher concentrations potentiated the AMPA receptor‐mediated current. Both effects were PKC‐dependent. Parallel recordings of synaptic currents and nitric oxide (NO)‐associated fluorescence showed that the increased frequency, related to pre‐synaptic release, was dependent on a NO‐mediated retrograde signaling. Moreover, increased synchronization in NO production was also observed in neurons neighboring those dialyzed with iAβo, indicating that iAβo can increase network excitability at a distance. Current‐clamp recordings suggested that iAβo increased neuronal excitability via AMPA‐driven synaptic activity without altering membrane intrinsic properties. These results strongly indicate that iAβo causes functional spreading of hyperexcitability through a synaptic‐driven mechanism and offers an important neuropathological significance to intracellular species in the initial stages of AD, which include brain hyperexcitability and seizures., In the presence of iAβo, PKC is activated (a), which in turn allows the production of nitric oxide (NO) at the post‐synaptic level, increasing the release of neurotransmitters (b) (evidenced as an increase in the frequency of mPSC). PKC also increases AMPA receptor current (c), increasing post‐synaptic depolarization and neuronal excitability (d). Finally, iAβo increases synchronization NO production in nearby neurons that do not have iAβo (e).
Published: 2021
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48. Historical Data in the CoastNet Geoportal: Documenting Fish Assemblages in Portuguese Estuaries

Author: Susana França, Vanessa F. Fonseca, Susanne E. Tanner, Rita P. Vasconcelos, Patrick Reis-Santos, Anabela Maia, Miguel Ruano, Inês Cardoso, Sofia Henriques, Miguel Pessanha Pais, Pedro Brandão, Ana C. Brito, Paola Castellanos, Paula Chainho, Bernardo Quintella, Luís da Costa, Maria José Costa, José Lino Costa, Henrique N. Cabral, UNIVERSIDADE DE LISBOA MARE LISBOA PRT, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Instituto Português de Investigação do Mar e da Atmosfera (IPMA), Universidad de Concepción - University of Concepcion [Chile], Faculdade de Ciências [Lisboa], Universidade de Lisboa = University of Lisbon (ULISBOA), Ecosystèmes aquatiques et changements globaux (UR EABX), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), European Project, and Universidade de Lisboa (ULISBOA)
Subjects: 0106 biological sciences, CoastNet research infrastructure, global changes, Science, Estuarine ecosystems, Ocean Engineering, QH1-199.5, Aquatic Science, estuarine fish communities, Oceanography, 010603 evolutionary biology, 01 natural sciences, 14. Life underwater, ComputingMilieux_MISCELLANEOUS, Water Science and Technology, Global and Planetary Change, geography, geography.geographical_feature_category, 010604 marine biology & hydrobiology, General. Including nature conservation, geographical distribution, Estuary, language.human_language, Fishery, estuarine ecosystems, historical data, [SDE]Environmental Sciences, language, %22">Fish , Portuguese, Geoportal
Abstract: International audience
Published: 2021
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49. Ammonium release via dissolution and biological mineralization of food pellets used in salmon farming

Author: Angel Rain-Franco, Camila Fernandez, Verónica Molina, Claudia Rojas, COPAS SURAUSTRAL Program, Universidad de Concepción [Chile], Centro FONDAP de Investigación en Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Universidad Austral de Chile, Interdisciplinary Center for Aquaculture Research = Centro Interdisciplinario de Investigación en Acuicultura Sustentable [Concepción, Chile] (INCAR), Laboratoire d'Océanographie Microbienne (LOMIC), Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire océanologique de Banyuls (OOB), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), and Universidad de Concepción - University of Concepcion [Chile]
Subjects: Pellets, Aquatic Science, Biology, 03 medical and health sciences, chemistry.chemical_compound, Water column, Nutrient, Aquaculture, Ammonium, 14. Life underwater, Nitrogen cycle, ComputingMilieux_MISCELLANEOUS, 030304 developmental biology, 0303 health sciences, business.industry, 04 agricultural and veterinary sciences, Bacterioplankton, Mineralization (soil science), 6. Clean water, chemistry, 13. Climate action, Environmental chemistry, 040102 fisheries, 0401 agriculture, forestry, and fisheries, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, business
Abstract: We studied the input of ammonium coming from the dissolution of food pellets commonly used in salmon farming as well as its potential for mineralization via ammonification and ammonium oxidation by natural bacterioplankton communities. Through experiments in central and southern Chile, we evaluated the potential for photo‐ and bio‐ammonification of food pellets in surface and subsurface waters (30 m depth) using irradiated (PAR + UV; IPS) and non‐irradiated dissolved‐pellet solutions (NIPS). Ammonium release was observed in both IPS and NIPS treatments and occurred at short time scales (
Published: 2019
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50. Protective Effect of an Avocado Peel Polyphenolic Extract Rich in Proanthocyanidins on the Alterations of Colonic Homeostasis Induced by a High-Protein Diet

Author: Catalina Carrasco-Pozo, Martin Beaumont, Daniel A. Medina, François Blachier, Maria Jose Cires, Edgar Pastene, Mireille Andriamihaja, Martin Gotteland, Paola Navarrete, Rodrigo Valenzuela, Fac Med, Dept Nutr, Universidad de Chile, Millennium Nucleus Biol Intestinal Microbiota, Partenaires INRAE, Universidad de Concepción - University of Concepcion [Chile], Universidad del Bio Bio [Concepción] (UBB), Grifﬁth University, Universidad San Sebastian, Physiologie de la Nutrition et du Comportement Alimentaire (PNCA), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Génétique Physiologie et Systèmes d'Elevage (GenPhySE ), École nationale supérieure agronomique de Toulouse [ENSAT]-Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Vétérinaire de Toulouse (ENVT), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, and Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) CONICYT FONDECYT 1120290 11130232 / Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) C12S01/ Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) 21120806 3160525
Subjects: intestinal microbiota, 0106 biological sciences, Colon, Butyrate, 01 natural sciences, 7. Clean energy, Feces, high protein, bioreactor, chemistry.chemical_compound, Ammonia, Homeostasis, Humans, Proanthocyanidins, Viability assay, Food science, proanthocyanidin, protein metabolite, chemistry.chemical_classification, Isovalerate, Bacteria, Persea, Plant Extracts, 010401 analytical chemistry, Polyphenols, food and beverages, General Chemistry, Gastrointestinal Microbiome, 0104 chemical sciences, Butyrates, chemistry, Proanthocyanidin, Polyphenol, Caco-2, Fruit, Diet, High-Protein, Propionate, Fermentation, Caco-2 Cells, General Agricultural and Biological Sciences, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, 010606 plant biology & botany
Abstract: International audience; Avocado peel, a byproduct from the avocado pulp industry, is a promising source of polyphenolic compounds. We evaluated the effect of a proanthocyanidin-rich avocado peel polyphenol extract (AvPPE) on the composition and metabolic activity of human fecal microbiota cultured for 24 h in a bioreactor in the presence of high protein (HP) amounts and the effect of the resulting culture supernatants (CSs) on HT-29Glc(-/+) and Caco-2 cells. AvPPE decreased the HP-induced production of ammonia, H2S, propionate, and isovalerate and increased that of indole and butyrate. Microbiota composition was marginally affected by HP, whileAvPPE increased the microorganisms/abundance of phylum Actinobacteria, families Coriobacteriaceae and Ruminococcaceae, and genus Faecalibacterium. AvPPE failed to prevent the HP-induced decrease of HT-29Glc(-/+) cell viability and energy efficiency but prevented the HP-induced alterations of barrier function in Caco-2 cells. Additionally, the genotoxic effect of the CSs upon HT-29Glc(-/+) was attenuated by AvPPE. Therefore, AvPPE may be considered as a promising product for improving colonic homeostasis.
Published: 2019
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