170 results on '"Larini P"'
Search Results
2. Vertically oriented low-dimensional perovskites for high-efficiency wide band gap perovskite solar cells
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Zanetta, Andrea, Larini, Valentina, Vikram, Toniolo, Francesco, Vishal, Badri, Elmestekawy, Karim A., Du, Jiaxing, Scardina, Alice, Faini, Fabiola, Pica, Giovanni, Pirota, Valentina, Pitaro, Matteo, Marras, Sergio, Ding, Changzeng, Yildirim, Bumin K., Babics, Maxime, Ugur, Esma, Aydin, Erkan, Ma, Chang-Qi, Doria, Filippo, Loi, Maria Antonietta, De Bastiani, Michele, Herz, Laura M., Portale, Giuseppe, De Wolf, Stefaan, Islam, M. Saiful, and Grancini, Giulia
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- 2024
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3. Vertically oriented low-dimensional perovskites for high-efficiency wide band gap perovskite solar cells
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Andrea Zanetta, Valentina Larini, Vikram, Francesco Toniolo, Badri Vishal, Karim A. Elmestekawy, Jiaxing Du, Alice Scardina, Fabiola Faini, Giovanni Pica, Valentina Pirota, Matteo Pitaro, Sergio Marras, Changzeng Ding, Bumin K. Yildirim, Maxime Babics, Esma Ugur, Erkan Aydin, Chang-Qi Ma, Filippo Doria, Maria Antonietta Loi, Michele De Bastiani, Laura M. Herz, Giuseppe Portale, Stefaan De Wolf, M. Saiful Islam, and Giulia Grancini
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Science - Abstract
Abstract Controlling crystal growth alignment in low-dimensional perovskites (LDPs) for solar cells has been a persistent challenge, especially for low-n LDPs (n 1.7 eV) impeding charge flow. Here we overcome such transport limits by inducing vertical crystal growth through the addition of chlorine to the precursor solution. In contrast to 3D halide perovskites (APbX3), we find that Cl substitutes I in the equatorial position of the unit cell, inducing a vertical strain in the perovskite octahedra, and is critical for initiating vertical growth. Atomistic modelling demonstrates the thermodynamic stability and miscibility of Cl/I structures indicating the preferential arrangement for Cl-incorporation at I-sites. Vertical alignment persists at the solar cell level, giving rise to a record 9.4% power conversion efficiency with a 1.4 V open circuit voltage, the highest reported for a 2 eV wide band gap device. This study demonstrates an atomic-level understanding of crystal tunability in low-n LDPs and unlocks new device possibilities for smart solar facades and indoor energy generation.
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- 2024
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4. Author Correction: Vertically oriented low-dimensional perovskites for high-efficiency wide band gap perovskite solar cells
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Andrea Zanetta, Valentina Larini, Vikram, Francesco Toniolo, Badri Vishal, Karim A. Elmestekawy, Jiaxing Du, Alice Scardina, Fabiola Faini, Giovanni Pica, Valentina Pirota, Matteo Pitaro, Sergio Marras, Changzeng Ding, Bumin K. Yildirim, Maxime Babics, Esma Ugur, Erkan Aydin, Chang-Qi Ma, Filippo Doria, Maria Antonietta Loi, Michele De Bastiani, Laura M. Herz, Giuseppe Portale, Stefaan De Wolf, M. Saiful Islam, and Giulia Grancini
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Science - Published
- 2024
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5. Effect of glyphosate management, formulations and rates on the agronomic performance of maize with the cp4epsps gene
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Alfredo Junior Paiola Albrecht, Leandro Paiola Albrecht, Arthur Arrobas Martins Barroso, André Felipe Moreira Silva, Fábio Henrique Krenchinski, Willian Felipe Larini, and Ricardo Victoria Filho
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EPSPs inhibitors ,Glyphosate-tolerant maize ,Herbicide selectivity ,Zea mays L ,Maize yield ,Agriculture (General) ,S1-972 - Abstract
ABSTRACT Second-generation glyphosate-tolerant maize (Roundup Ready 2, RR2) is characterised by the expression of the cp4epsps gene. Despite some studies suggesting possible undesirable effects from the application of glyphosate in RR2 maize, other reports have demonstrated glyphosate selectivity for RR2 plants, with minor damage symptoms, if any, and with no negative effects on the chlorophyll indices. The aim of this study was to evaluate the effect of different types of glyphosate management, formulations and rates of application on chlorophyll indices and the agronomic performance of an RR2 maize genotype expressing the cp4epsps gene. Five experiments were conducted in a full factorial design (2 x 5 x 5) to evaluate two types of management, two formulations and five rates of glyphosate. Damage symptoms, chlorophyll indices and variables related to agronomic performance (plant height, stem diameter, yield and 100-grain weight) were evaluated. Similar crop responses were found for each of the glyphosate formulations (potassium salt and isopropylamine salt) and types of management (single application and sequential application) under test, indicating that the use of glyphosate-based commercial products affords flexibility in terms of formulation and frequency of application. Glyphosate formulated as potassium salt or isopropylamine salt and applied to RR2 maize either in a single application (full rate) or in two sequential applications (each at half rate) has a similar effect and may therefore be used without distinction. However, it is important to consider the rate of application since high rates of glyphosate (especially greater than 1,440 g ae ha-1) may affect the development and production of RR2 maize.
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- 2023
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6. Eficácia de herbicidas aplicados em trapoeraba (Commelina benghalensis) na região oeste do Estado do Paraná
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Matheus Moreira Perissato, Alfredo Junior Paiola Albrecht, Leandro Paiola Albrecht, Willian Bosquette Rosa, Samara Moreira Perissato, and Willian Felipe Larini
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Glyphosate ,Mecanismo de ação ,Associação ,Controle de plantas daninhas ,Agriculture - Abstract
A trapoeraba (Commelina spp.) é considerada um gênero tolerante ao glyphosate, apresentando controle reduzido a esse herbicida em estádios avançados. Assim, o objetivo do trabalho foi avaliar a eficácia de controle das associações de glyphosate com herbicidas de diferentes mecanismos de ação em Commelina benghalensis. O experimento foi conduzido, após a colheita do milho safrinha em 2018, em Palotina-PR. O delineamento experimental foi de blocos casualizados com 12 tratamentos (Testemunha, glyphosate + 2,4-D, glyphosate + 2,4-D (aminol 806), glyphosate + dicamba, saflufenacil + glyphosate, glyphosate + dicamba + saflufenacil, diclosulam + glyphosate + saflufenacil, glyphosate + dicamba + chlorimuron, glyphosate + dicamba + glufosinato, glyphosate + dicamba + diclosula, glyphosate + dicamba + (sulfentrazona + diuron) e glyphosate + dicamba + (imazetapir + flumioxazina) e 4 repetições. O controle de C. benghalensis foi avaliado por notas visuais aos 7, 14, 21 e 28 dias após a aplicação (DAA) e por meio da massa seca aos 28 DAA. Independente do tratamento, aos 7 DAA não houve controle eficaz. As notas foram crescentes ao longo do tempo, sendo que aos 28 DAA, os tratamentos glyphosate + 2,4-D para ambas as doses (1025+975 e 1080+1005); diclosulam + glyphosate + saflufenacil; glyphosate + dicamba + diclosulam e glyphosate + dicamba + (imazetapir + flumioxazina) foram os mais eficazes no controle e redução de massa seca, indicando ser potenciais associações no controle da trapoeraba.
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- 2023
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7. Laryngomalacia and Obstructive Sleep Apnea in Children: From Diagnosis to Treatment
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Luca Cerritelli, Andrea Migliorelli, Alessio Larini, Andrea Catalano, Alberto Caranti, Chiara Bianchini, Andrea Ciorba, Francesco Stomeo, Claudio Vicini, and Stefano Pelucchi
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laryngomalacia ,obstructive sleep apnea ,OSA ,DISE ,children ,diagnosis ,Pediatrics ,RJ1-570 - Abstract
The aim of this review is to investigate the state of the art among the association between Obstructive sleep apnea (OSA) and laryngomalacia, analyzing the epidemiology, the diagnostic tools, and the possible treatments available to affected patients. Laryngomalacia, characterized by the malacic consistency of the epiglottis with a tendency to collapse during inspiratory acts, producing a characteristic noise known as stridor, is a common condition in infants and particularly in those affected by prematurity, genetic diseases, craniofacial anomalies, and neurological problems. Congenital laryngomalacia, presenting with stridor within the first 15 days of life, is often self-limiting and tends to resolve by 24 months. OSA is not only a consequence of laryngomalacia but also exacerbates and perpetuates the condition. Currently, the treatments reported in the literature are based (i) on medical therapies (including watchful waiting) and (ii) on surgical treatments. Among the surgical techniques, the most described is supraglottoplasty, performed with the use of cold instruments, CO2 LASER, transoral robotic surgery, or the microdebrider.
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- 2024
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8. Incremento na eficácia de herbicidas no controle de plantas daninhas devido a aplicação sequencial de glufosinate + saflufenacil
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Alfredo Junior Paiola Albrecht, Leandro Paiola Albrecht, André Felipe Moreira Silva, Rafaela Alenbrant Migliavacca, Willian Felipe Larini, Rogério Kosinski, and Marcelo Katakura
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Conyza spp. ,Commelina benghalensis ,Glyphosate ,Auxinas sintéticas ,Inibidores da protoporfirinogênio oxidase (Protox) ,Agriculture - Abstract
É notória a eficácia de glufosinate + saflufenacil no controle de plantas daninhas, mas qual o incremento da eficácia de controle da primeira aplicação de herbicidas devido à aplicação sequencial, ou ainda quais seriam as melhores misturas de herbicidas na primeira aplicação com a aplicação sequencial de glufosinate + saflufenacil? Objetivou-se avaliar a eficácia de herbicidas, seguidos ou não da aplicação sequencial de glufosinate + saflufenacil, no controle de Conyza spp. (buva) e Commelina benghalensis (trapoeraba) no período de entressafra, anteriormente à semeadura da soja. O experimento foi conduzido em 2020, em Palotina, Paraná (PR), utilizado delineamento em blocos casualizados, com quatro repetições. Os tratamentos foram dispostos em arranjo fatorial (19 x 2), utilizados 19 níveis para a primeira aplicação, compostos pela aplicação isolada ou em misturas de glyphosate, glufosinate, carfentrazone, saflufenacil, dicamba e 2,4-D. O segundo fator foi representado pela aplicação, ou não, em sequencial de glufosinate + saflufenacil. A aplicação sequencial incrementou a eficácia de todos os tratamentos no controle de trapoeraba, independentemente dos herbicidas utilizados na primeira aplicação. A aplicação de glufosinate + saflufenacil foi eficaz no controle da buva, seja na primeira ou na aplicação sequencial. A aplicação única em manejo de entressafra, antecedendo a soja, não é a indicação mais viável. Destaca-se a importância das misturas de saflufenacil com carfentrazone no controle de trapoeraba, e com dicamba, no controle de buva.
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- 2023
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9. A comparison between two rTMS protocols as augmentation strategies in patients with treatment-resistant depression
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L. Larini, M. Castiglioni, E. Piccoli, C. Scarpa, M. Renne, S. Torriero, M. Bosi, B. Benatti, A. Varinelli, M. Vismara, and B. Dell’Osso
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Psychiatry ,RC435-571 - Abstract
Introduction Repetitive transcranial magnetic stimulation (rTMS) is an evidence-based treatment and rTMS protocols have been included in international guidelines for patients with treatment-resistant depression (TRD). The daily administration of standard rTMS protocols, typically over several weeks, could be a limiting factor (e.g., time off from work, commuting issues). To intensify the antidepressant response and to reduce the number of stimulation days, it has been proposed that increasing the number of rTMS sessions performed per day could be more effective and help to reduce the burden for patients and clinicians. Although there is much interest in accelerated TMS protocols, little is known about their efficacy and tolerability, and the literature on the topic is still scarce. Objectives To compare the efficacy and tolerability of two rTMS protocols (standard vs. accelerated) as augmentative strategies in patients with TRD. Methods In the present ongoing, open-label, trial 14 patients meeting DSM-5 criteria for major depressive episode (either unipolar or bipolar), classified as partial responders or non-responders to adequate pharmacological treatment, were randomized to receive either standard (one session per day, five days a week, for four weeks; n= 7) or accelerated (two sessions per day, five days a week, for two weeks; n=6) rTMS treatment protocols. In both cases, rTMS was performed on the left dorsolateral prefrontal cortex, high frequency (10 Hz) at 120% of the motor threshold, 3000 pulses per sessions. Primary outcome measures included HAM-D, MADRS, and CGI-S scores at baseline (T0), at the end of rTMS treatment (T1), and after 1 month (T2), as well as tolerability based on adverse effects. Paired Samples t-Test for continuous variables was used to compare psychometric scales at each timepoint, while t-Test was used to compare differences between the two groups. Results With respect to total sample, in terms of primary outcome measures a significant reduction of HAM-D, MADRS and CGI-S total scores between T0 and T1 (t: 3.01, p
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- 2023
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10. POTENTIAL SELECTIVITY OF HERBICIDES IN PRE- AND POST-EMERGENT LINSEED (LINUM USITATISSIMUM L.)
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Mateus Dalpubel Mattiuzzi, Alfredo Junior Paiola Albrecht, Luisa Carolina Baccin, André Felipe Moreira Silva, Leandro Paiola Albrecht, and Willian Felipe Larini
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Injury ,bentazon ,protoporphyrinogen oxidase (PPO) inhibitors ,acetolactate synthase (ALS) inhibitors ,acetyl-CoA carboxylase (ACCase) inhibitors ,Agriculture - Abstract
Linseed is an oilseed crop that is widely used in human and animal feed, as a cover crop in agroecosystems, and for fiber production. To facilitate the management of weeds in the crop, this study aimed to evaluate potential selective herbicides for linseed cultivation applied in pre-planting and incorporation (PPI), pre-emergence (PRE), and early (POST) and late (late POST) post-emergence stages, since there are presently no herbicides registered for use on linseed in Brazil. Therefore, four experiments were conducted in a completely randomized design with four replications, and five (exp. 1), 21 (exp. 2), 26 (exp. 3), and four (exp. 4) treatments. Crop injury and the fresh and dry matter of the plants were evaluated. Experiment 4 was conducted until seed production, and data on the final height, number of capsules, and yield were obtained. The results were characterized by the low selectivity of herbicides during pre-emergence, whether incorporated or not, and indicated 11 herbicides with potential selectivity in post-emergence, whether early or late, namely: bentazon, bentazon + imazamox, clethodim + fenoxaprop, clethodim, flumiclorac, fluazifop, flumioxazin, haloxyfop, nicosulfuron, tembotrione, and tepraloxydim. Linseed is demonstrated to be susceptible to or has low tolerance to various herbicides.
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- 2023
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11. A novel Penicillium sumatraense isolate reveals an arsenal of degrading enzymes exploitable in algal bio-refinery processes
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M. Giovannoni, I. Larini, V. Scafati, A. Scortica, M. Compri, D. Pontiggia, G. Zapparoli, N. Vitulo, M. Benedetti, and B. Mattei
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Penicillium sumatraense ,Functional genomics ,Algal saprophyte ,Cell wall-degrading enzymes ,Chlorella vulgaris ,Algal cell wall ,Fuel ,TP315-360 ,Biotechnology ,TP248.13-248.65 - Abstract
Abstract Background Microalgae are coming to the spotlight due to their potential applications in a wide number of fields ranging from the biofuel to the pharmaceutical sector. However, several factors such as low productivity, expensive harvesting procedures and difficult metabolite extractability limit their full utilization at industrial scale. Similarly to the successful employment of enzymatic arsenals from lignocellulolytic fungi to convert lignocellulose into fermentable sugars for bioethanol production, specific algalytic formulations could be used to improve the extractability of lipids from microalgae to produce biodiesel. Currently, the research areas related to algivorous organisms, algal saprophytes and the enzymes responsible for the hydrolysis of algal cell wall are still little explored. Results Here, an algal trap method for capturing actively growing microorganisms was successfully used to isolate a filamentous fungus, that was identified by whole-genome sequencing, assembly and annotation as a novel Penicillium sumatraense isolate. The fungus, classified as P. sumatraense AQ67100, was able to assimilate heat-killed Chlorella vulgaris cells by an enzymatic arsenal composed of proteases such as dipeptidyl- and amino-peptidases, β-1,3-glucanases and glycosidases including α- and β-glucosidases, β-glucuronidase, α-mannosidases and β-galactosidases. The treatment of C. vulgaris with the filtrate from P. sumatraense AQ67100 increased the release of chlorophylls and lipids from the algal cells by 42.6 and 48.9%, respectively. Conclusions The improved lipid extractability from C. vulgaris biomass treated with the fungal filtrate highlighted the potential of algal saprophytes in the bioprocessing of microalgae, posing the basis for the sustainable transformation of algal metabolites into biofuel-related compounds.
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- 2021
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12. Microstructural Evolution of a High-Strength Zr-Ti-Modified 2139 Aluminum Alloy for Laser Powder Bed Fusion
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Federico Larini, Riccardo Casati, Silvia Marola, and Maurizio Vedani
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additive manufacturing ,laser powder bed fusion ,high-strength Al alloys ,microstructure ,heat treatment ,precipitation ,Mining engineering. Metallurgy ,TN1-997 - Abstract
The demand for high-performance aluminum components drives research into the design of novel alloys that can be processed by laser-based additive manufacturing. In recent years, the addition of grain refiners proved to be an effective strategy to reduce the hot-cracking of high-strength Al alloys. In this study, the solidification and aging behavior of an Al2139 alloy doped with additions of Zr and Ti for L-PBF was investigated. These elements favored the formation of a fine-grained structure free of cracks. The formation of Al3(Zr,Ti) inoculants was predicted by Scheil simulations and observed as cuboidal particles in the center of α-Al grains. The microstructure of the as-built material featured fine and fully equiaxed grains, which appeared comparatively finer at the edge (300–600 nm) and coarser (0.8–2.0 μm) at the center of the molten pools. In both cases, there was evidence of Cu and Mg micro-segregations at the grain boundaries. The microhardness of 109.7 HV0.5 in the as-built state was increased to 186.1 HV0.5 after optimized T4 heat treatment, responsible for the precipitation of many rod-shaped Zr- and Ti-based second phases and quasi-spherical Cu-, Mn-, and Fe-rich particles. Prolonged exposure carried out to simulate high-temperature service caused a drop in microhardness and marked modification of the microstructure, evidenced by the rearrangement and subsequent spheroidization of Cu- and Mg-rich particles at the grain boundaries.
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- 2023
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13. Support offered to newborns’ parents by the nursing team
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Christina Fiorini Tosca, Maitê Larini Rimolo, and Márcia Koja Breigeiron
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Health care quality assessment ,Parents ,Nursing staff ,Neonatal nursing ,Neonatology ,Gynecology and obstetrics ,RG1-991 - Abstract
Abstract Objectives: to know the perception of parents of newborns regarding the support received from the nursing team during their child’s hospitalization. Methods: prospective study. Sample of 127 mothers and fathers of newborns hospitalized for at least 72 hours in neonatal units of a hospital in the southern region of Brazil. Data collected from May to September 2018 through application of a proposed questionnaire and consultation of medical records. Descriptive and analytical statistics were used. Results: participants were aged 28.2 (SD = 6.8) years, mostly composed of mothers (76.4%), primiparous (51.2%). Full support was declared by 66.0% of participants in the appreciative domain and 65.5% in the instrumental, 51.7% in the informational and 46.2% in the emotional domains. Mothers declared they felt supported mainly in the instrumental (p=0.009) and informational (p=0.039) domains. There was a positive correlation between the emotional, appreciative and informational domains (p
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- 2020
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14. Tau Assembly: The Dominant Role of PHF6 (VQIVYK) in Microtubule Binding Region Repeat R3
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Ganguly, Pritam, D., Thanh, Larini, Luca, LaPointe, Nichole E, Sercel, Alexander J, Shade, Madeleine F, Feinstein, Stuart C, Bowers, Michael T, and Shea, Joan-Emma
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Alzheimer's Disease including Alzheimer's Disease Related Dementias (AD/ADRD) ,Acquired Cognitive Impairment ,Neurodegenerative ,Dementia ,Alzheimer's Disease ,Aging ,Brain Disorders ,Benzothiazoles ,Dimerization ,Humans ,Mass Spectrometry ,Microscopy ,Electron ,Transmission ,Molecular Dynamics Simulation ,Mutation ,Protein Binding ,Thiazoles ,tau Proteins ,Physical Sciences ,Chemical Sciences ,Engineering - Abstract
Self-aggregation of the microtubule-binding protein Tau reduces its functionality and is tightly associated with Tau-related diseases, termed tauopathies. Tau aggregation is also strongly associated with two nucleating six-residue segments, namely PHF6 (VQIVYK) and PHF6* (VQIINK). In this paper, using experiments and computational modeling, we study the self-assembly of individual and binary mixtures of Tau fragments containing PHF6* (R2/wt; (273)GKVQIINKKLDL(284)) and PHF6 (R3/wt; (306)VQIVYKPVDLSK(317)) and a mutant R2/ΔK280 associated with a neurodegenerative tauopathy. The initial stage of aggregation is probed by ion-mobility mass spectrometry, the kinetics of aggregation monitored with Thioflavin T assays, and the morphology of aggregates visualized by transmission electron microscopy. Insights into the structure of early aggregates and the factors stabilizing the aggregates are obtained from replica exchange molecular dynamics simulations. Our data suggest that R3/wt has a much stronger aggregation propensity than either R2/wt or R2/ΔK280. Heterodimers containing R3/wt are less stable than R3/wt homodimers but much more stable than homodimers of R2/wt and R2/ΔK280, suggesting a possible role of PHF6*-PHF6 interactions in initiating the aggregation of full-length Tau. Lastly, R2/ΔK280 binds more strongly to R3/wt than R2/wt, suggesting a possible mechanism for a pathological loss of normal Tau function.
- Published
- 2015
15. Regulation and aggregation of intrinsically disordered peptides
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Levine, Zachary A, Larini, Luca, LaPointe, Nichole E, Feinstein, Stuart C, and Shea, Joan-Emma
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Dementia ,Aging ,Alzheimer's Disease including Alzheimer's Disease Related Dementias (AD/ADRD) ,Brain Disorders ,Alzheimer's Disease ,Neurodegenerative ,Acquired Cognitive Impairment ,Neurosciences ,Generic health relevance ,Humans ,Methylamines ,Molecular Dynamics Simulation ,Peptides ,Protein Aggregation ,Pathological ,Protein Structure ,Secondary ,Urea ,tau Proteins ,protein folding ,intrinsically disordered proteins ,molecular dynamics simulations ,osmolytes ,tau protein - Abstract
Intrinsically disordered proteins (IDPs) are a unique class of proteins that have no stable native structure, a feature that allows them to adopt a wide variety of extended and compact conformations that facilitate a large number of vital physiological functions. One of the most well-known IDPs is the microtubule-associated tau protein, which regulates microtubule growth in the nervous system. However, dysfunctions in tau can lead to tau oligomerization, fibril formation, and neurodegenerative disease, including Alzheimer's disease. Using a combination of simulations and experiments, we explore the role of osmolytes in regulating the conformation and aggregation propensities of the R2/wt peptide, a fragment of tau containing the aggregating paired helical filament (PHF6*). We show that the osmolytes urea and trimethylamine N-oxide (TMAO) shift the population of IDP monomer structures, but that no new conformational ensembles emerge. Although urea halts aggregation, TMAO promotes the formation of compact oligomers (including helical oligomers) through a newly proposed mechanism of redistribution of water around the perimeter of the peptide. We put forth a "superposition of ensembles" hypothesis to rationalize the mechanism by which IDP structure and aggregation is regulated in the cell.
- Published
- 2015
16. Quantitative and Statistical Data in Education: From Data Collection to Data Processing. Science, Society and New Technologies Series. Volume 2
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Larini, Michel, Barthes, Angela, Larini, Michel, and Barthes, Angela
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This book presents different data collection and representation techniques: elementary descriptive statistics, confirmatory statistics, multivariate approaches and statistical modeling. It exposes the possibility of giving more robustness to the classical methodologies of education sciences by adding a quantitative approach. The fundamentals of each approach and the reasons behind them are methodically analyzed, and both simple and advanced examples are given to demonstrate how to use them. Subsequently, this book can be used both as a course for the uninitiated and as an accompaniment for researchers who are already familiar with these concepts. [This book was co-published with ISTE (United Kingdom).]
- Published
- 2018
17. A novel Penicilliumsumatraense isolate reveals an arsenal of degrading enzymes exploitable in algal bio-refinery processes
- Author
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Giovannoni, M., Larini, I., Scafati, V., Scortica, A., Compri, M., Pontiggia, D., Zapparoli, G., Vitulo, N., Benedetti, M., and Mattei, B.
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- 2021
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18. A generalized mean field theory of coarse-graining
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Larini, Luca and Krishna, Vinod
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Condensed Matter - Statistical Mechanics ,Condensed Matter - Soft Condensed Matter ,Physics - Biological Physics ,Physics - Chemical Physics ,Physics - Computational Physics - Abstract
A general mean field theory is presented for the construction of equilibrium coarse grained models. Inverse methods that reconstruct microscopic models from low resolution experimental data can be derived as particular implementations of this theory. The theory also applies to the opposite problem of reduction, where relevant information is extracted from available equilibrium ensemble data. These problems are central to the construction of coarse grained representations of complex systems, and commonly used coarse graining methods are derived as particular cases of the general theory., Comment: 10 pages
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- 2010
19. Active surveillance for carbapenemase-producing Klebsiella pneumoniae and correlation with infection in subjects attending an Italian tertiary-care hospital: a 7-year retrospective study
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Adriana Calderaro, Mirko Buttrini, Monica Martinelli, Sara Montecchini, Silvia Covan, Alberto Ruggeri, Isabella Rodighiero, Alan Di Maio, Mariapia Galullo, Sandra Larini, Maria Cristina Arcangeletti, Carlo Chezzi, and Flora De Conto
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Medicine - Abstract
Objectives The distribution of carbapenemase-producing Klebsiella pneumoniae (CPKP) phenotypes and genotypes in samples collected during 2011–2018 was evaluated. The association between patients with CPKP-positive rectal swab and those with CPKP infection, as well as the overall analysis of CPKP-infected patients, was performed.Setting The study was performed in a tertiary-care hospital located in Northern Italy.Participants Two groups were considered: 22 939 ‘at-risk’ patients submitted to active surveillance for CPKP detection in rectal swabs/stools and 1094 CPKP-infected patients in which CPKP was detected in samples other than rectal swabs.Results CPKP-positive rectal swabs were detected in 5% (1150/22 939). A CPKP infection was revealed in 3.1% (719/22 939) of patients: 582 with CPKP-positive rectal swab (50.6% of the 1150 CPKP-positive rectal swabs) and 137 with CPKP-negative rectal swab. The 49.4% (568/1150) of the patients with CPKP-positive rectal swab were carriers. The overall frequency of CPKP-positive patients (carriers and infected) was almost constant from 2012 to 2016 (excluding the 2015 peak) and then increased in 2017–2018. blaKPC was predominant followed by blaVIM. No difference was observed in the frequency of CPKP-positive rectal swab patients among the different material groups. Among the targeted carbapenemase genes, blaVIM was more significantly detected from urine than from other samples.Conclusions The high prevalence of carriers without evidence of infection, representing a potential reservoir of CPKP, suggests to maintain the guard about this problem, emphasising the importance of active surveillance for timely detection and separation of carriers, activation of contact precautions and antibiotic treatment guidance on suspicion of infection.
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- 2021
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20. Effect of glyphosate management, formulations and rates on the agronomic performance of maize with the cp4epsps gene.
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Junior Paiola Albrecht, Alfredo, Paiola Albrecht, Leandro, Arrobas Martins Barroso, Arthur, Moreira Silva, André Felipe, Krenchinski, Fábio Henrique, Larini, Willian Felipe, and Filho, Ricardo Victoria
- Abstract
Second-generation glyphosate-tolerant maize (Roundup Ready 2, RR2) is characterised by the expression of the cp4epsps gene. Despite some studies suggesting possible undesirable effects from the application of glyphosate in RR2 maize, other reports have demonstrated glyphosate selectivity for RR2 plants, with minor damage symptoms, if any, and with no negative effects on the chlorophyll indices. The aim of this study was to evaluate the effect of different types of glyphosate management, formulations and rates of application on chlorophyll indices and the agronomic performance of an RR2 maize genotype expressing the cp4epsps gene. Five experiments were conducted in a full factorial design (2 x 5 x 5) to evaluate two types of management, two formulations and five rates of glyphosate. Damage symptoms, chlorophyll indices and variables related to agronomic performance (plant height, stem diameter, yield and 100-grain weight) were evaluated. Similar crop responses were found for each of the glyphosate formulations (potassium salt and isopropylamine salt) and types of management (single application and sequential application) under test, indicating that the use of glyphosate-based commercial products aff ords flexibility in terms of formulation and frequency of application. Glyphosate formulated as potassium salt or isopropylamine salt and applied to RR2 maize either in a single application (full rate) or in two sequential applications (each at half rate) has a similar effect and may therefore be used without distinction. However, it is important to consider the rate of application since high rates of glyphosate (especially greater than 1,440 g ae ha
-1 ) may affect the development and production of RR2 maize. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
21. Exploring Antibiotic Resistance Diversity in Leuconostoc spp. by a Genome-Based Approach: Focus on the lsaA Gene
- Author
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Elisa Salvetti, Ilenia Campedelli, Ilaria Larini, Giada Conedera, and Sandra Torriani
- Subjects
Leuconostoc ,food chain ,genomes ,antibiotic resistance ,lsaA gene ,clindamycin ,Biology (General) ,QH301-705.5 - Abstract
Leuconostoc spp. are environmental microorganisms commonly associated with fermented foods. Absence of antibiotic resistance (AR) in bacteria is a critical issue for global food safety. Herein, we updated the occurrence of AR genes in the Leuconostoc genus through in silico analyses of the genomes of 17 type strains. A total of 131 putative AR traits associated with the main clinically relevant antibiotics were detected. We found, for the first time, the lsaA gene in L. fallax ATCC 700006T and L. pseudomesenteroides NCDO 768T. Their amino acid sequences displayed high similarities (59.07% and 52.21%) with LsaA of Enterococcusfaecalis V583, involved in clindamycin (CLI) and quinupristin-dalfopristin (QUD) resistance. This trait has different distribution patterns in Leuconostoc nontype strains—i.e., L. pseudomesenteroides, L. lactis and L. falkenbergense isolates from fermented vegetables, cheeses, and starters. To better explore the role of lsaA, MIC for CLI and QUD were assessed in ATCC 700006T and NCDO 768T; both strains were resistant towards CLI, potentially linking lsaA to their resistant phenotype. Contrarily, NCDO 768T was sensitive towards QUD; however, expression of lsaA increased in presence of this antibiotic, indicating an active involvement of this trait and thus suggesting a revision of the QUD thresholds for this species.
- Published
- 2021
- Full Text
- View/download PDF
22. Pleural tuberculosis: medical thoracoscopy greatly increases the diagnostic accuracy
- Author
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Angelo Gianni Casalini, Pier Anselmo Mori, Maria Majori, Miriam Anghinolfi, Enrico Maria Silini, Letizia Gnetti, Federica Motta, Sandra Larini, Sara Montecchini, Roberta Pisi, and Adriana Calderaro
- Subjects
Medicine - Abstract
Our objective was to evaluate the efficacy of a standardised work-up in the diagnosis of pleural tuberculosis (TB) that included fibreoptic bronchoscopy and medical thoracoscopy. A consecutive series of 52 pleural TB patients observed during the period 2001–2015 was evaluated retrospectively. 20 females, mean (range) age 39.7 (18–74) years, and 32 males, mean (range) age 45.75 (21–83) years, were included (28 non-EU citizens (53.8%)). The diagnosis of TB infections was established by identification (using stains, culture or molecular tests) of Mycobacterium tuberculosis in the pleura, sputum and/or bronchial specimens, or by evidence of caseous granulomas on pleural biopsies. Patients with and without lung lesions were considered separately. The diagnostic yield of the microbiological tests on pleural fluid was 17.3% (nine out of 52 patients). Among the 18 patients with lung lesions, bronchial samples (washing, lavage or biopsy) were positive in 50% of cases (nine patients). Cultures of pleural biopsies were positive in 63% of cases (29 out of 46 patients); pleural histology was relevant in all patients. Without pleural biopsy, a diagnosis would have been reached in 15 out of 52 patients (28.6%) and in four of them only following culture at 30–40 days. An integrated diagnostic work-up that includes all the diagnostic methods of interventional pulmonology is required for a diagnosis of pleural TB. In the majority of patients, a diagnosis can be reached only with pleural biopsy.
- Published
- 2018
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- View/download PDF
23. Méthode d’analyse statistique exploratoire pour une étude comparative sur les représentations de la démarche d’investigation d’enseignants de collège
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MAGALI COUPAUD, JEREMY CASTERA, MICHEL LARINI, and ALICE DELSERIEYS
- Subjects
methodology ,exploratory data analysis ,inquiry based science education ,teachers representations ,Education ,Mathematics ,QA1-939 - Abstract
The use of statistics, and in particular exploratory data analysis, in educational research present interesting perspectives. However, it is also important to discuss its relevance and the meaning of the results obtained. As such, we propose a methodological discussion based on a study concerning the introduction of a shared teaching method in French curricula of biology-geology, technology and physics- chemistry. We made a survey by questionnaire to collect the representations of teachers from the tree school subjects related to inquiry based science education (IBSE). In this communication, we propose a comparative analysis of different types of exploratory data analysis used in our research in order to highlight the different representations of teachers regarding the use of IBSE depending on their subject. We bring out, in particular, some conditions necessary in the design of a questionnaire that will be processed using principal component analysis and factorial discriminant analysis.
- Published
- 2015
- Full Text
- View/download PDF
24. REMUNERAÇÃO VARIÁVEL BASEADA NO PAGAMENTO DE AÇÕES: UM ESTUDO DE EVIDENCIAÇÃO DAS INFORMAÇÕES REQUERIDAS PELO CPC 10 (R1) APLICADO EM EMPRESAS BRASILEIRAS / The variable remuneration based on actions payment: disclosure study of the information required b
- Author
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Joice Denise Schafer, Amanda Mendieta Larini, Priscila Alano da Rosa, and Luiz Felipe Ferreira
- Subjects
Business ,HF5001-6182 - Abstract
As entidades buscam formas de incentivo aos funcionários, aos gestores e aos administradores por meio do processo de remuneração estratégica com o intuito de retê-los em suas organizações. Este estudo teve por objetivo identificar na listagem das 150 melhores empresas para se trabalhar, segundo a Revista Você S/A, o cumprimento do Comitê de Pronunciamentos Contábeis (CPC) 10 (R1), no item 45, que discorre sobre os procedimentos para a divulgação das informações nas demonstrações financeiras das empresas de capital aberto optantes do plano de remuneração estratégica baseado em compra de ações. Referente às tipologias de delineamento, a pesquisa classifica-se como indutiva, quanto à lógica de pesquisa; descritiva, em relação ao objetivo; documental, quanto aos procedimentos; e, qualitativa, quanto à abordagem do problema. Os resultados apontam que as empresas estão em concordância com o pronunciamento técnico CPC 10 (R1) no que diz respeito à evidenciação das informações referentes à opção de ações. Palavras-chave: Opção de compra de ações. Employee stock option plans. CPC 10 (R1). Disclosure.
- Published
- 2015
- Full Text
- View/download PDF
25. Nivells de plom en individus de la necròpoli tardo-romana del carrer Virgen de la Misericordia (València)
- Author
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Gianni Gallello, Alessia Larini, Fulvio Bartoli, Francesco Mallegni, Agustín Díaz Pastor, and Agustín Diez Castillo
- Subjects
Auxiliary sciences of history ,Archaeology ,CC1-960 - Abstract
Estudi dels nivells de plom en individus inhumats.
- Published
- 2015
- Full Text
- View/download PDF
26. Surfactina: estrutura, aplicações e fatores envolvidos em sua produção
- Author
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Mariana Munhoz Larini, Maria Inês Rezende, Mara Lúcia Luiz Ribeiro, and Fabiana Guillen Moreira Gasparin
- Subjects
Biotechnology ,TP248.13-248.65 ,Food processing and manufacture ,TP368-456 - Abstract
A surfactina é um lipopeptídeo da classe dos biossurfactantes, mais comumente produzida por Bacillus subtilis, uma bactéria Gram-positiva. A estrutura química da surfactina é composta por peptídeo ligado aos grupos carboxil e hidrocarboxil de ácidos graxos de cadeia longa. A produção de surfactina pode ser influenciada pela linhagem, inóculo e idade do microrganismo, além de fatores físicos como temperatura, pH, velocidade de agitação, grau de aeração, formação de espuma e concentração de oxigênio dissolvido e fatores nutricionais, como fontes de carbono, nitrogênio e elementos-traço nos meios de cultivo. As potenciais áreas de aplicação desse biossurfactante são terapêuticas e ambientais. Neste trabalho tem-se como objetivo abordar aspectos estruturais, fatores envolvidos na produção por microrganismos e as áreas de aplicação da surfactina. Palavras-chave: Aplicações. Estrutura. Microrganismos. Produção. Surfactina.
- Published
- 2017
- Full Text
- View/download PDF
27. Computational and experimental analysis of short peptide motifs for enzyme inhibition.
- Author
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Jinglin Fu, Luca Larini, Anthony J Cooper, John W Whittaker, Azka Ahmed, Junhao Dong, Minyoung Lee, and Ting Zhang
- Subjects
Medicine ,Science - Abstract
The metabolism of living systems involves many enzymes that play key roles as catalysts and are essential to biological function. Searching ligands with the ability to modulate enzyme activities is central to diagnosis and therapeutics. Peptides represent a promising class of potential enzyme modulators due to the large chemical diversity, and well-established methods for library synthesis. Peptides and their derivatives are found to play critical roles in modulating enzymes and mediating cellular uptakes, which are increasingly valuable in therapeutics. We present a methodology that uses molecular dynamics (MD) and point-variant screening to identify short peptide motifs that are critical for inhibiting β-galactosidase (β-Gal). MD was used to simulate the conformations of peptides and to suggest short motifs that were most populated in simulated conformations. The function of the simulated motifs was further validated by the experimental point-variant screening as critical segments for inhibiting the enzyme. Based on the validated motifs, we eventually identified a 7-mer short peptide for inhibiting an enzyme with low μM IC50. The advantage of our methodology is the relatively simplified simulation that is informative enough to identify the critical sequence of a peptide inhibitor, with a precision comparable to truncation and alanine scanning experiments. Our combined experimental and computational approach does not rely on a detailed understanding of mechanistic and structural details. The MD simulation suggests the populated motifs that are consistent with the results of the experimental alanine and truncation scanning. This approach appears to be applicable to both natural and artificial peptides. With more discovered short motifs in the future, they could be exploited for modulating biocatalysis, and developing new medicine.
- Published
- 2017
- Full Text
- View/download PDF
28. PRESENÇA DE AMELOBLASTOMA EM JOVEM DO GENERO MASCULINO: RELATO DE CASO
- Author
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JANAÍNA EVELYN DE OLIVEIRA TORQUATO LARINI, ANGELO JOSÉ PAVAN, EDUARDO VIDOR VIEIRA, and WASHINGTON RODRIGUES CAMARGO
- Subjects
Science ,Social Sciences - Abstract
Os ameloblastomas são neoplasias odontogênicas benignas de origem epitelial com comportamento localmente agressivo. Acometem predominantemente a mandíbula e podem atingir proporções variadas de acordo com o tempo de evolução. Manifestam-se geralmente entre a terceira e quinta décadas de vida. O tratamento conservador, muitas vezes associado a procedimentos adicionais, tem sido usado como opção de escolha para muitos que tratam deste tipo de tumor. Sendo assim este trabalho tem como objetivo apresentar, através de um relato de caso clínico, a remoção de um ameloblastoma na região posterior da mandíbula.
- Published
- 2016
29. Prevalência dos transtornos mentais em pacientes atendidos no ambulatório da residência médica de psiquiatria da Universidade Estadual de Maringá = Prevalence of mental disorders in patients treated at the psychiatry residency clinic at the State University of Maringá
- Author
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Mauro Porcu, Isolde Terezinha Santos Previdelli, Maria Christhina Fernandes Larini, Mariana Mascarenhas Mazaro, Taciana Gontijo da Costa Dias, and Vanessa Figueira de Oliveira
- Subjects
psiquiatria ,prevalência ,transtornos mentais ,psychiatry ,prevalence ,mental disorders ,Medicine (General) ,R5-920 ,Pharmacy and materia medica ,RS1-441 - Abstract
Objetivo: caracterizar o perfil dos pacientes no Ambulatório de Psiquiatria da Residência do Hospital Universitário Regional de Maringá, por idade, sexo, cor, religião, escolaridade, estado civil, profissão, avaliando a prevalência dos transtornos mentais.Métodos: pesquisa nos prontuários dos pacientes atendidos neste serviço, entre maio de 2002 e dezembro de 2005. Foram utilizados a Análise Multivariada (análise de Correspondência) e o aplicativo Statistica 7.8, para caracterizar o diagnóstico. Resultados: Adepressão correspondeu a 29% dos diagnósticos, seguida pela categoria Transtorno Afetivo Bipolar com 16%. Constatou-se que a maioria dos pacientes é do sexo feminino (68,19%), com idade média de 40,28 anos e desvio-padrão de 15,24 anos. A cor branca predomina com70,87%, assim como os casados que totalizam 52%. Conclusão: foi registrada alta taxa de utilização do serviço de saúde por pessoas com diagnóstico de transtorno depressivo, transtorno bipolar e transtornos ansiosos, correspondendo a 60% dos pacientes.Objective: to build a profile of patients treated in the Psychiatry Residency Clinic at the Regional University Hospital ofMaringá as for age, gender, ethnicity, religion, education level, marital status and profession, and evaluate the prevalence of mental disorders among them. Methods: research of the medical records of patients treated at the location, between May 2002 and December 2005.In order to reach a diagnosis, the study made use of Multivariate Analysis (Correspondence Analysis) and the Statistica 7.8 software application. Results: Depression comprised 29% of diagnoses, followed by bipolar affective disorder with 16%. It was observed that the majority of patients were women (68.19%), with an average age of 40.28 ± 15.24 years. Caucasian patients were the majority (70.87%), and 52% of patients were married. Conclusion: It was observed that 60% of patients who looked for treatment were diagnosed with depression, bipolar or anxiety disorders.
- Published
- 2007
30. The role of arterial embolization in blunt splenic injury
- Author
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Monaco, D., Franco, F., Marcato, C., Larini, P., Rossi, C., and Volpi, A.
- Published
- 2011
- Full Text
- View/download PDF
31. An example of ‘hyperbolic decoding’. Reframing the narrative of a greek symposium scene in the Erica Jong’s novel Sappho’s Leap
- Author
-
Gloria Larini
- Subjects
Jong ,Saffo ,decodifica iperbolica ,Geography. Anthropology. Recreation ,Language. Linguistic theory. Comparative grammar ,P101-410 ,Translating and interpreting ,P306-310 - Abstract
The study is about the only greek symposium scene in the Erica Jong’s novel Sappho’s Leap. We intend to explore the relationship between linguistic rendering of greek fragments by the author and the original texts. We compare, through a linguistic-philological method, the ancient greek text and the novel through a semantic analysis intratextual and intertextual. The study identifies three main directions of decoding activated by Jong: linguistic reductions and / or additions in greek fragments; historical and biographical inventions about the characters, that ‘mistify’ the cultural period; adaptation of the story to the information of the fragments through an inferential reading. The article ‘discovers’ a new form of decoding from a literary text to a literary text, that I have called 'hyperbolic', a neologism that highlights the complexity of an infrequent and synchronous switching from ancient to modern, from one literary genre to another. We highlight contaminations and pastiche of a process not just “politically correct”, although demonstrating the relevance of the themes of ancient greek literature.
- Published
- 2012
- Full Text
- View/download PDF
32. Uterine artery embolization in the treatment and prevention of postpartum hemorrhage
- Author
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Soncini, E., Pelicelli, A., Larini, P., Marcato, C., Monaco, D., and Grignaffini, A.
- Published
- 2007
- Full Text
- View/download PDF
33. Prevalência dos transtornos mentais em pacientes atendidos no ambulatório da residência médica de psiquiatria da Universidade Estadual de Maringá - DOI: 10.4025/actascihealthsci.1086
- Author
-
Mauro Porcu, Isolde Terezinha Santos Previdelli, Maria Christhina Fernandes Larini, Mariana Mascarenhas Mazaro, Taciana Gontijo da Costa Dias, and Vanessa Figueira de Oliveira
- Subjects
psiquiatria ,prevalência ,transtornos mentais ,Medicine (General) ,R5-920 ,Pharmacy and materia medica ,RS1-441 - Abstract
Objetivo: caracterizar o perfil dos pacientes no Ambulatório de Psiquiatria da Residência do Hospital Universitário Regional de Maringá, por idade, sexo, cor, religião, escolaridade, estado civil, profissão, avaliando a prevalência dos transtornos mentais. Métodos: pesquisa nos prontuários dos pacientes atendidos neste serviço, entre maio de 2002 e dezembro de 2005. Foram utilizados a Análise Multivariada (análise de Correspondência) e o aplicativo Statistica 7.8, para caracterizar o diagnóstico. Resultados: A depressão correspondeu a 29% dos diagnósticos, seguida pela categoria Transtorno Afetivo Bipolar com 16%. Constatou-se que a maioria dos pacientes é do sexo feminino (68,19%), com idade média de 40,28 anos e desvio-padrão de 15,24 anos. A cor branca predomina com 70,87%, assim como os casados que totalizam 52%. Conclusão: foi registrada alta taxa de utilização do serviço de saúde por pessoas com diagnóstico de transtorno depressivo, transtorno bipolar e transtornos ansiosos, correspondendo a 60% dos pacientes
- Published
- 2008
- Full Text
- View/download PDF
34. EPISODIO EPIDEMICO DI GASTROENTERITE DA NOROVIRUS DI SOSPETTA ORIGINE ALIMENTARE IN UNA CASA DI RIPOSO.
- Author
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M. Martinelli, MC Medici, A Calderaro, MC Arcangeletti, A Morelli, LA Abelli, P. Portincasa, S. Larini, F. De Conto, F. Pinardi, M.D.P. Esteban, P. Somenzi, S. Preti, F. Casula, G. Dettori, and C. Chezzi
- Subjects
Microbiology ,QR1-502 - Published
- 2007
- Full Text
- View/download PDF
35. CARATTERIZZAZIONE DELL’ENTEROTOSSINO-GENICITÀ DI CEPPI DI STAPHYLOCOCCUS AUREUS MEDIANTE MULTIPLEX PCR
- Author
-
L. Zerbini, S. Larini, S. Rossi, L. Bertoncini, P. Somenzi, M.G. Menozzi, C. Chezzi, and G. Dettori
- Subjects
Microbiology ,QR1-502 - Published
- 2004
- Full Text
- View/download PDF
36. Wildfire propagation: A two-dimensional multiphase approach
- Author
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Porterie, B., Morvan, D., Larini, M., and Loraud, J. C.
- Published
- 1998
- Full Text
- View/download PDF
37. ASOCIACIÓN DE PANTOEA AGGLOMERANS Y TRAUMAS PENETRANTES. PRESENTACIÓN DE DOS CASOS CLÍNICOS EN PEDIATRÍA.
- Author
-
Rico, M., Ernst, A., Sempio, R., Martinich, C., Larini, S., Anchart, E., Arciero, G., and Díaz, M. S.
- Subjects
SOFT tissue infections ,PENETRATING wounds ,INFECTIOUS arthritis ,MEDICAL communication ,MEDICAL laboratories ,PEDIATRICS - Abstract
Copyright of FABICIB: Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral is the property of Universidad Nacional del Litoral and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
38. Is the tantalum Strecker stent suitable for TIPS creation? short- and mid-term results in 20 consecutive patients
- Author
-
Ugolotti, Ugo, Larini, Pietro, Marcato, Carla, Saccani, Andrea, Puccianti, Franca, and Pedretti, Giovanni
- Published
- 1997
- Full Text
- View/download PDF
39. An exact Riemann solver for detonation products
- Author
-
Larini, M., Saurel, R., and Loraud, J. C.
- Published
- 1992
- Full Text
- View/download PDF
40. Ignition and growth of a detonation by a high energy plasma
- Author
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Saurel, R., Larini, M., and Loraud, J. C.
- Published
- 1992
- Full Text
- View/download PDF
41. Optimization of a pyrotechnic igniter with the release of reactive particles
- Author
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Saurel, R., Loraud, J. C., and Larini, M.
- Published
- 1991
- Full Text
- View/download PDF
42. Comparative genomics reveals the potential biotechnological applications of Liquorilactobacillus nagelii VUCC-R001, a strain isolated from kombucha tea.
- Author
-
Larini, Ilaria, Tintori, Sarah, Gatto, Veronica, Felis, Giovanna E., Salvetti, Elisa, and Torriani, Sandra
- Subjects
BIOTECHNOLOGY ,COMPARATIVE genomics ,GENOMICS ,LACTIC acid bacteria ,COMPARATIVE method ,BIOGENIC amines ,DEXTRAN ,FERMENTED foods - Abstract
Liquorilactobacillus nagelii is a lactic acid bacterium frequently found in a variety of traditional fermented foods, where it contributes to their sensory properties and potential health benefits. However, research evaluating the genetic and functional features of L. nagelii is scarce in the literature. In this study, we sequenced and assembled the genome of L. nagelii VUCC-R001, a strain isolated from kombucha tea, assessing its safety and exploring its biotechnological potential, mainly in terms of d -phenyllactic acid and dextran production, through a comparative genomic approach with 35 Liquorilactobacillus genomes and related phenotypic validation. Bioinformatic analysis revealed a good-quality draft genome (∼2.4 Mb) of VUCC-R001 with a completeness around 99.7% (N50 of 151,630 bp). Comparative genomic analyses showed the correct identification of the new strain, the absence of genes encoding transmissible antibiotic resistance, virulence factors, and biogenic amine production, underlining its safety, also confirmed by phenotypic tests. We identified genes putatively associated with d -phenyllactic acid (PLA) production and verified the capability of this strain to produce a high concentration (52 mg/L) of PLA in vitro. To date, this is the first study reporting a Liquorilactibacillus strain that produces d -phenyllactic acid. Genome analyses of L. nagelii also elicited the presence of a dextransucrase GH70 (EC 2.4.1.5), leading to the production of dextran from sucrose, an exopolysaccharide with applications in the food and biomedical industries. This investigation provides new insights into the genomic features and functional attributes of L. nagelii, opening new prospects for the biotechnological use of selected strains belonging to this species. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
43. Thoracic Aortic Stents: a Combined Solution for Complex Cases
- Author
-
Saccani, S., Nicolini, F., Beghi, C., Marcato, C., Uccelli, M., Larini, P., Budillon, A.M., Agostinelli, A., and Gherli, T.
- Published
- 2002
- Full Text
- View/download PDF
44. Comparative genomics reveals the potential biotechnological applications of Liquorilactobacillus nageliiVUCC-R001, a strain isolated from kombucha tea
- Author
-
Larini, Ilaria, Tintori, Sarah, Gatto, Veronica, Felis, Giovanna E., Salvetti, Elisa, and Torriani, Sandra
- Abstract
Liquorilactobacillus nageliiis a lactic acid bacterium frequently found in a variety of traditional fermented foods, where it contributes to their sensory properties and potential health benefits. However, research evaluating the genetic and functional features of L. nageliiis scarce in the literature. In this study, we sequenced and assembled the genome of L. nageliiVUCC-R001, a strain isolated from kombucha tea, assessing its safety and exploring its biotechnological potential, mainly in terms of d-phenyllactic acid and dextran production, through a comparative genomic approach with 35 Liquorilactobacillusgenomes and related phenotypic validation. Bioinformatic analysis revealed a good-quality draft genome (∼2.4 Mb) of VUCC-R001 with a completeness around 99.7% (N50 of 151,630 bp). Comparative genomic analyses showed the correct identification of the new strain, the absence of genes encoding transmissible antibiotic resistance, virulence factors, and biogenic amine production, underlining its safety, also confirmed by phenotypic tests. We identified genes putatively associated with d-phenyllactic acid (PLA) production and verified the capability of this strain to produce a high concentration (52 mg/L) of PLA in vitro. To date, this is the first study reporting a Liquorilactibacillusstrain that produces d-phenyllactic acid. Genome analyses of L. nageliialso elicited the presence of a dextransucrase GH70 (EC 2.4.1.5), leading to the production of dextran from sucrose, an exopolysaccharide with applications in the food and biomedical industries. This investigation provides new insights into the genomic features and functional attributes of L. nagelii,opening new prospects for the biotechnological use of selected strains belonging to this species.
- Published
- 2024
- Full Text
- View/download PDF
45. Metabarcoding analysis of gut microbiota of healthy individuals reveals impact of probiotic and maltodextrin consumption
- Author
-
Calgaro, M., Pandolfo, M., Salvetti, E., Marotta, A., Larini, I., Pane, M., Amoruso, A., Del Casale, A., Vitulo, N., Fiorio, M., and Felis, G.E.
- Published
- 2021
- Full Text
- View/download PDF
46. Palladium-Catalyzed β-Arylation of Silyl Ketene Acetals and Application to the Synthesis of Benzo-Fused δ-Lactones
- Author
-
Aspin, Sam, López-Suárez, Laura, Larini, Paolo, Goutierre, Anne-Sophie, Jazzar, Rodolphe, and Baudoin, Olivier
- Abstract
Silyl ketene acetals are shown to be competent nucleophiles in Pd-catalyzed migrative C(sp3)–H arylations. Compared to the parent ester lithium enolates, they possess decreased reactivity but enhanced chemoselectivity. This behavior was exploited through the synthesis of valuable benzo-fused δ-lactones such as 1-isochromanones and dihydrocoumarins.
- Published
- 2024
- Full Text
- View/download PDF
47. Superacidic Cyclization of Activated Anthranilonitriles into 2-Unsubstituted-4-aminoquinolines
- Author
-
Lavrard, Hubert, Larini, Paolo, and Popowycz, Florence
- Abstract
4-Aminoquinolines were prepared in a three-step synthesis starting from substituted anthranilonitriles. The condensation on 1,1,1-trichloro-4-ethoxybut-3-enone proceeded efficiently either neat or in refluxing EtOH. Cyclization in superacidic trifluoromethanesulfonic acid provided unstable intermediate, which upon treatment with NaOEt in ethanol, afforded the expected esters. Theoretical investigations pointed out a monoprotonated nitrilium as the reactive species during the cyclization process.
- Published
- 2024
- Full Text
- View/download PDF
48. Percutaneous Renal Artery Embolization of Nonfunctioning Allograft: Preliminary Experience
- Author
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Capocasale, E., Larini, P., Mazzoni, M.P., Marcato, C., Valle, R. Dalla, Busi, N., Monaco, D., Benozzi, L., and Sianesi, M.
- Published
- 2005
- Full Text
- View/download PDF
49. Ligan-controlled α- and β-arylation of acyclic N-Boc amines
- Author
-
Millet, A., Dailler, D., Larini, P., Baudoin, O., Depierre, Frédérique, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires (ICBMS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut de Chimie du CNRS (INC)-École Supérieure Chimie Physique Électronique de Lyon-Centre National de la Recherche Scientifique (CNRS), Interface Theory Experiment : Mechanism & Modeling (ITEMM), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut de Chimie du CNRS (INC)-École Supérieure Chimie Physique Électronique de Lyon-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL)
- Subjects
[CHIM.ORGA]Chemical Sciences/Organic chemistry ,[CHIM.ORGA] Chemical Sciences/Organic chemistry - Abstract
International audience; The palladium‐catalyzed ligand‐controlled arylation of α‐zincated acyclic amines, obtained by directed α‐lithiation and transmetalation, is described. Whereas PtBu3 gave rise to α‐arylated Boc‐protected amines, more flexible N‐phenylazole‐based phosphine ligands induced major β‐arylation through migrative cross‐coupling.All manner of control: The arylation of α‐zincated acyclic Boc‐protected amines was selectively performed at the α‐ or β‐position in a ligand‐controlled manner. α‐Arylation occurs by direct reductive elimination of the α‐palladated intermediate whereas β‐arylation involves palladium migration along the alkyl chain. Boc=tert‐butoxycarbonyl.
- Published
- 2014
50. Transport phenomena in a nonequilibrium, partially ionized gas in a magnetic field
- Author
-
Petit, Jean -Pierre and Larini, Michel
- Published
- 1974
- Full Text
- View/download PDF
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