168 results on '"Matías, Javier"'
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2. FIRST VERTEBRATE ASSEMBLAGE OF THE EARLY HOLOCENE FROM NORTHEASTERN ARGENTINA (MESOPOTAMIAN REGION)
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Matías Javier Peralta and Brenda Soledad Ferrero
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Vertebrates ,Holocene ,Quaternary ,Entre Ríos ,Mesopotamia ,Fossil man. Human paleontology ,GN282-286.7 ,Paleontology ,QE701-760 - Abstract
In this contribution, we report and describe a microvertebrate fossil assemblage recovered from a Holocene fluvial unit located in Entre Ríos Province, northeastern Argentina (Mesopotamian Region). The analyzed stratigraphic section is on the left bank of Doll creek (32° 18’ 24” S, 60° 25’ 41” W), southwestern Entre Ríos Province. The stratigraphic section was divided into three levels and a total of 36 samples were collected. Radiocarbon dating was obtained from gastropod shells from the base of the section, with a range of 9,990±140 BP (Early Holocene). It was possible to record fishes, such as eels and characids, anurans, reptiles, birds, and small-medium size mammals. Most of the identified taxa constitute the first fossil records from the Quaternary of the Mesopotamian Region and even from Argentina. The systematic, biostratigraphic, and taphonomical results show that the environmental conditions in this area at the beginning of the Holocene period were similar to the current ones: a temperate-humid climate with water availability. This contribution is the first study of a microvertebrate fossil assemblage from the Early Holocene from northeastern Argentina (Mesopotamian Region) and represents an important contribution to the knowledge of the Quaternary fossil vertebrates from Argentina.
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- 2024
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3. Shotgun proteomics of quinoa seeds reveals chitinases enrichment under rainfed conditions
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Poza-Viejo, Laura, Redondo-Nieto, Miguel, Matías, Javier, Granado-Rodríguez, Sara, Maestro-Gaitán, Isaac, Cruz, Verónica, Olmos, Enrique, Bolaños, Luis, and Reguera, Maria
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- 2023
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4. Visualising the Concept of Metabolic Regulation in Bacteria: A Simple Laboratory Experiment on Polyhydroxybutyrate Storage
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Lagares, Antonio, Garavaglia, Matías Javier, Robledo, Natalia Belén, Valverde, Claudio, Goñi, Sandra Elizabeth, and Lozano, Mario Enrique
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Regulation is a key concept for understanding the dynamics of metabolism in bacteria. This report outlines a simple laboratory experiment aimed at studying a key form of regulation in bacterial metabolism, exemplifying how microbes switch the flux of carbon towards alternative metabolic fates as a function of nutrient availability and according to their physiological status. The experiment involves the use of a "Sinorhizobium meliloti" wild-type strain and its isogenic derivative carrying a null mutation in the gene encoding the synthase that generates the storage polymer polyhydroxybutyrate (PHB). These strains serve to characterise the effects of growth phase and carbon availability at the end of balanced growth on the extent of PHB accumulation by rhizobia. The experimental set-up can be completed in a main 4-h laboratory session, followed by an additional 1-h session after an initial incubation for subsequent bacterial-colony counting (48 h), and requires equipment usually available at any university. The protocol described here is performed by the undergraduates of our biochemistry course. We consider this exercise to be a useful complementary tool for spotlighting the concept of metabolic regulation in bacteria and for promoting scientific thinking along with the development of students' wet-bench laboratory skills.
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- 2022
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5. Quinoa plant architecture: A key factor determining plant productivity and seed quality under long-term drought
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Maestro-Gaitán, Isaac, Granado-Rodríguez, Sara, Poza-Viejo, Laura, Matías, Javier, Márquez-López, José Carlos, Pedroche, Justo Javier, Cruz, Verónica, Bolaños, Luis, and Reguera, Maria
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- 2023
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6. A systematic review on whether regenerative agriculture improves animal welfare: A qualitative analysis with a One Welfare perspective
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Matías Javier Hargreaves-Méndez and María José Hötzel
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Animal welfare ,Causal Loop Diagram ,livestock welfare ,subjective well-being ,sustainable agriculture ,systems thinking ,Zoology ,QL1-991 ,Veterinary medicine ,SF600-1100 - Abstract
The welfare of animals in food-production systems is a cause of concern to the public. Regenerative agriculture was first used by the Rodale Institute and proposes to regenerate degraded components of ecosystems, aiming to be more than just sustainable. However, despite animal welfare being pushed to be part of the SDG agenda for 2030, there is no clarity on how regenerative agriculture impacts animal welfare. It is challenging to determine regenerative agriculture impacts on animal welfare, since it is not entirely defined. One Welfare could help define entry points for future research by studying animal welfare in connection with human welfare and environmental conservation. We aimed to analyse the extent to which positive animal welfare outcomes characterise regenerative agriculture systems in peer-reviewed articles and whether the narratives of such articles support that regenerative agriculture promotes animal welfare directly or indirectly by improving human welfare and environmental conservation. We searched papers including ‘regenerative agriculture’ using PRISMA-P, selecting animal welfare, human welfare, environment conservation terms, developed themes, and carried out analysis using Atlas.Ti8 and Causal Loop Diagram. We found that papers mainly linked animal welfare to animal health, human welfare to financial farm status and farmer’s self-awareness, and environmental conservation to soil improvement. Causal Loop Diagram indicated that regenerative agriculture had the potential to improve the health and nutrition components of animal welfare by enhancing financial farmers’ status/self-awareness (human welfare), and the soil (environmental conservation), reflecting that the processes that affect human welfare and environmental conservation could also affect animal welfare. However, information in papers remains insufficient to determine how regenerative agriculture impacts on animal welfare and research into regenerative agriculture needs to extend its focus on animal welfare and elucidate the regenerative agriculture principles leading to animal welfare.
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- 2023
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7. From 'Farm to Fork': Exploring the Potential of Nutrient-Rich and Stress-Resilient Emergent Crops for Sustainable and Healthy Food in the Mediterranean Region in the Face of Climate Change Challenges.
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Matías, Javier, Rodríguez, María José, Carrillo-Vico, Antonio, Casals, Joan, Fondevilla, Sara, Haros, Claudia Mónika, Pedroche, Justo, Aparicio, Nieves, Fernández-García, Nieves, Aguiló-Aguayo, Ingrid, Soler-Rivas, Cristina, Caballero, Pedro A., Morte, Asunción, Rico, Daniel, and Reguera, María
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CROPS ,AGRICULTURAL diversification ,CLIMATE change ,AGRICULTURE ,LOCAL foods ,FOOD crops ,BUCKWHEAT ,FUNCTIONAL foods - Abstract
In the dynamic landscape of agriculture and food science, incorporating emergent crops appears as a pioneering solution for diversifying agriculture, unlocking possibilities for sustainable cultivation and nutritional bolstering food security, and creating economic prospects amid evolving environmental and market conditions with positive impacts on human health. This review explores the potential of utilizing emergent crops in Mediterranean environments under current climate scenarios, emphasizing the manifold benefits of agricultural and food system diversification and assessing the impact of environmental factors on their quality and consumer health. Through a deep exploration of the resilience, nutritional value, and health impacts of neglected and underutilized species (NUS) such as quinoa, amaranth, chia, moringa, buckwheat, millet, teff, hemp, or desert truffles, their capacity to thrive in the changing Mediterranean climate is highlighted, offering novel opportunities for agriculture and functional food development. By analysing how promoting agricultural diversification can enhance food system adaptability to evolving environmental conditions, fostering sustainability and resilience, we discuss recent findings that underscore the main benefits and limitations of these crops from agricultural, food science, and health perspectives, all crucial for responsible and sustainable adoption. Thus, by using a sustainable and holistic approach, this revision analyses how the integration of NUS crops into Mediterranean agrifood systems can enhance agriculture resilience and food quality addressing environmental, nutritional, biomedical, economic, and cultural dimensions, thereby mitigating the risks associated with monoculture practices and bolstering local economies and livelihoods under new climate scenarios. [ABSTRACT FROM AUTHOR]
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- 2024
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8. Evaluating Yield, Nutritional Quality, and Environmental Impact of Quinoa Straws across Mediterranean Water Environments
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Matías, Javier, primary, Cruz, Verónica, additional, Rodríguez, María José, additional, Calvo, Patricia, additional, Maestro-Gaitán, Isaac, additional, and Reguera, María, additional
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- 2024
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9. A Trip Back Home: Resistance to Herbivores of Native and Non-Native Plant Populations of Datura stramonium
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Núñez-Farfán, Juan, primary, Velázquez-Márquez, Sabina, additional, Torres-García, Jesús R., additional, De-la-Cruz, Ivan M., additional, Arroyo, Juan, additional, Valverde, Pedro L., additional, Flores-Ortiz, César M., additional, Hernández-Portilla, Luis B., additional, López-Cobos, Diana E., additional, and Matías, Javier D., additional
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- 2024
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10. Effects of droughts on the larval digenean assemblage that parasitizes the snail Biomphalaria peregrina (Planorbidae): a 4-year study in a temporary pond from Argentina
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Parietti, Manuela, Merlo, Matías Javier, and Etchegoin, Jorge Alejandro
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- 2021
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11. No unión de fémur distal secundario a lesiones por armas de fuego; Manejo con técnica de masquelet y revisión de la literatura
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Niehaus, Andres Schmidt-Hebbel, additional, Stegmeier, Robert Etienne Partarrieu, additional, Croxatto, Matías Javier, additional, Garrido, Sergio Arellano, additional, Silva, Diego Edwards, additional, and Burucker, Alex Vaisman, additional
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- 2023
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12. Assessment of the changes in seed yield and nutritional quality of quinoa grown under rainfed Mediterranean environments
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Matías, Javier, primary, Rodríguez, María José, additional, Cruz, Verónica, additional, Calvo, Patricia, additional, Granado-Rodríguez, Sara, additional, Poza-Viejo, Laura, additional, Fernández-García, Nieves, additional, Olmos, Enrique, additional, and Reguera, María, additional
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- 2023
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13. Dispositivo de Impresión 3D de Pasta Cerámica UNLa-CETMIC, por extrusión con pistón mecánico para jeringa estándar versión 2
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Ruscitti, Andrés Federico, primary, Pouton, Matías Javier, additional, Stabile, Matías, additional, and Rendtorff Birrer, Nicolás Maximiliano, additional
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- 2023
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14. Unveiling changes in rhizosphere‐associated bacteria linked to the genotype and water stress in quinoa
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Maestro‐Gaitán, Isaac, primary, Granado‐Rodríguez, Sara, additional, Redondo‐Nieto, Miguel, additional, Battaglia, Antonio, additional, Poza‐Viejo, Laura, additional, Matías, Javier, additional, Bolaños, Luis, additional, and Reguera, Maria, additional
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- 2023
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15. Evaluation of Rice Straw Yield, Fibre Composition and Collection Under Mediterranean Conditions
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Matías Javier, Cruz Verónica, García Antonio, and González Diana
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agricultural by-products ,baling ,biomass partitioning ,lignocellulosic biomass ,greenhouse gases emissions ,rice crop ,Agriculture (General) ,S1-972 - Abstract
Rice straw remains almost unutilised in the majority of cases and is usually burned. Data on rice residue production under European conditions are extremely limited. A detailed assessment of rice biomass yield, partitioning and straw collection was carried out in Spain. Eleven commercial rice varieties were evaluated in 2015, and two baling trials were performed in 2014 and 2015. The average straw yield was 9.7 t·ha−1. Straw yield, biomass partitioning indices and fibre composition varied significantly according to rice variety. Straw to grain ratio and harvest index were 1.00 and 0.50 on average for rough grain, and 1.25 and 0.41 for husked grain. Biomass partitioning indices significantly correlated with grain yield. Mean content of cellulose, hemicellulose, lignin and ash of rice straw was 32.5%, 19.8%, 6.5% and 13.7%, respectively. Straw amount of less than 3.0 t·ha−1 can be collected during the baling trials. Rice straw could represent an eco-friendly source of lignocellulosic biomass in Europe, however, in order to achieve this, baling machine improvements and special crop management should be carried out.
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- 2019
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16. Assessment of Modular Construction System Made with Low Environmental Impact Construction Materials for Achieving Sustainable Housing Projects
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Romero Quidel, Guisel, primary, Soto Acuña, Matías Javier, additional, Rojas Herrera, Carlos Javier, additional, Rodríguez Neira, Karin, additional, and Cárdenas-Ramírez, Juan Pablo, additional
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- 2023
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17. Identification and Characterization of Sources of Resistance to Peronospora variabilis in Quinoa
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Calderón-González, Álvaro, primary, Matías, Javier, additional, Cruz, Verónica, additional, Molinero-Ruiz, Leire, additional, and Fondevilla, Sara, additional
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- 2023
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18. A systematic review on whether regenerative agriculture improves animal welfare: A qualitative analysis with a One Welfare perspective
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Hargreaves-Méndez, Matías Javier, primary and Hötzel, María José, additional
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- 2023
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19. Long-Term Drought Alters Chenopodium Quinoa Inflorescence Architecture Improving the Overall Seed Nutritional Quality of Secondary Panicles in Water Stress-Sensitive Genotypes
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Maestro-Gaitán, Isaac, primary, Granado-Rodríguez, Sara, additional, Poza-Viejo, Laura, additional, Matías, Javier, additional, Márquez-López, José Carlos, additional, Pedroche, Justo Javier, additional, Cruz, Verónica, additional, Bolaños, Luis, additional, and Maria, Reguera, additional
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- 2023
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20. Anatomía comparada de los terópodos paravianos Unenlagiidae y sus implicancias en el origen de las aves
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Motta, Matías Javier, Novas, Fernando Emilio, and López, Guillermo Marcos
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Theropoda ,Filogenia ,Paraves ,Ciencias Naturales ,Anatomía Comparada ,Unenlagiidae ,Paleobiología - Abstract
Paraves es el clado de dinosaurios que cuenta con mayor número de especies, ya que por un lado agrupa a terópodos no-avianos extintos como Troodon y Velociraptor, y por otro lado a las aves, únicos dinosaurios vivientes (Avialae: Dinosauria, Gauthier 1986), donde se cuentan más de 11.000 especies. El registro más antiguo del clado corresponde a 160 millones de años antes del presente (Jurásico Medio; Anchiornis; Xu et al., 2008). Hasta el día de la fecha se conocen unas 80 especies de paravianos no-avianos, cuyos restos fueron hallados en todos los continentes, incluyendo Antártida. Los primeros restos de paravianos gondwánicos fueron dados a conocer en 1995 por Rauhut y Werner, provenientes de rocas del Cretácico Superior de Sudán, África (Fm. Wadi Milk; Cenomaniano). Sin embargo, no fue hasta los hallazgos realizados en Patagonia a finales de la década de los 90, cuando empezó a develarse una radiación insospechada de paravianos gondwánicos. El primer taxón descripto de Patagonia fue Unenlagia comahuensis, dado a conocer en 1997 por Novas y Puerta, proveniente de rocas del Cretácico Superior de Neuquén (Fm Portezuelo; Turoniano-Coniaciano). Hacia 1999, Bonaparte acuña el clado Unenlagiidae para reunir a Unenlagia y el enigmático Rahonavis de Madagascar, interpretado originalmente como un Avialae (Bonaparte, 1999). En la actualidad, son 8 las especies de paravianos halladas en rocas Cretácicas de Argentina, Madagascar, Brasil y Antártida, muchas de ellas de afinidades aún inciertas y cuya afinidad a Unenlagiidae es cuestionable (Turner et al., 2012; Agnolín et al., 2019; Pei et al., 2020). En los últimos años ocurrió un incremento exponencial en el número de estudios especializados en Unenlagiidae, incluyendo contribuciones sobre anatomía ósea, estudios sobre neumaticidad, filogenia, análisis morfofuncionales, y aspectos paleobiológicos relacionados al origen del vuelo batido en las aves (Novas, 2004; Agnolín y Novas 2011; 2013; Gianechini y Apesteguía, 2011; Gianechini et al., 2011a,b; 2017; 2018; 2020; Gianechini, 2014; Brissón Egli et al., 2017; Motta et al., 2016, 2018, 2020; Novas et al., 2018; 2019; 2020; 2021; Agnolín et al., 2019; Forster et al., 2020; Gianechini y Zurriaguz, 2021). Si bien el entendimiento de la anatomía de los paravianos unenlágidos ha aumentado en los últimos años, los nuevos descubrimientos realizados a nivel mundial (e.g. Halszkaraptor, Tianyuraptor) y en el hemisferio sur (e.g. Overoraptor, Imperobator) dan importancia a la redescripción y reinterpretación de los hallazgos previos bajo el nuevo y complejo contexto filogenético. Con esta premisa, en la presente tesis se realizaron estudios osteológicos exhaustivos de los paravianos patagónicos Austroraptor cabazai, Pamparaptor micros, Overoraptor chimentoi y de restos de unenlágidos de la Formación Chorrillo, así como también revisiones críticas del taxón antártico Imperobator antarcticus y del brasilero Ypupiara lopai. Los estudios osteológicos permitieron establecer una nueva diagnosis actualizada para Austroraptor cabazai. Asimismo, se describieron por primera vez materiales inéditos de Austroraptor (e.g. cuadrado) y Pamparaptor (e.g. parte posterior de la mandíbula). Por otro lado, fueron llevadas adelante comparaciones exhaustivas entre Unenlagiidae y un amplio número de paravianos, particularmente en lo que se refiere a elementos craneanos, vértebras cervicales y dorsales, variabilidad de la dentición, y rasgos anatómicos de los miembros anterior y posterior. Esto resultó en el reconocimiento de varios caracteres novedosos de utilidad filogenética. Las tomografías computadas realizadas en huesos craneanos y las vértebras de Austroraptor cabazai brindaron información valiosa acerca de rasgos anatómicos internos. Se observaron recesos amplios en los huesos maxilar, lacrimal y postorbital, lo cual permite conjeturar la invasión de senos paranasales y suborbitales amplios con un desarrollo mayor al observado en otros paravianos. En particular, el maxilar demostró la total ausencia de una fenestra promaxilar y la invasión de los senos paranasales en el maxilar a través del septo interfenestral, un rasgo que ocurre en el troodóntido Byronosaurus, y que contrasta con otros paravianos (e.g. dromaoesáuridos, Archaeopteryx) donde existe una fenestra promaxilar y el seno paranasal no invade la fenestra maxilar. La presencia de grandes recesos neumáticos en los huesos lacrimal y postorbital de Austroraptor, así como un surangular carente de fenestra en Austroraptor y Pamparaptor, son algunos rasgos anatómicos discutidos y que tienen gran importancia para entender la disparidad morfológica de los elementos craneanos dentro de los diferentes subclados de Paraves. Las tomografías de las vértebras de Austroraptor mostraron la presencia de pleurocelos con recesos que invaden internamente tanto el centro vertebral como el arco neural, similar a lo que ocurre en Unenlagia, en contraposición a Buitreraptor (Gianechini y Zurriaguz, 2021). La revisión de Imperobator (Ely y Case, 2019) permitió dilucidar semejanzas y diferencias con otros paravianos lo que resultó en el soporte mediante análisis filogenéticos su reconocimiento como un miembro del clado Unenlagiidae. Imperobator comparte con otros unenlágidos la presencia de un metatarsiano III comprimido y con sección en forma de “T” lo que lo acerca a los unenlágidos (Agnolín et al., 2010). Sin embargo, y tal como indicaron autores previos (Case et al., 2007; Turner et al., 2012; Ely y Case, 2019), Imperobator muestra una combinación de rasgos única, desconocida en otros unenlágidos, como ser fíbula y calcáneo fusionados, metatarsiano II sin surco intercondilar diferenciado y tubérculo flexor de la falange pedal ungueal II-3 reducido. La revisión de Ypupiara (Brum et al., 2021) muestra que este taxón posee diferencias notables con unenlágidos, tales como la presencia de dientes agudos y cónicos en el maxilar, placas interdentales amplias y subcuadrangulares y la ausencia de rugosidades y forámenes en la cara lateral del maxilar. Más aún, la falta de rasgos diagnósticos no permite su referencia a algún clado específico dentro de Theropoda y, en consecuencia, es considerado como Theropoda indet. La ubicación filogenética de Unenlagiidae dentro de Paraves es aún discutida, a pesar de recientes revisiones y trabajos integradores sobre este grupo (Agnolín y Novas, 2011; 2013: Gianechini y Apesteguía 2011; Gianechini 2014; Agnolín et al., 2019). Más aún, novedosos análisis filogenéticos, así como la reciente publicación de nuevos paravianos de China, han modificado el esquema clásico de Paraves. La revisión de los unenlágidos a la luz de los nuevos descubrimientos y los estudios anatómicos llevados a cabo en la presente tesis, han permitido adicionar datos novedosos con potencial filogenético claro. De esta manera, se llevó adelante una revisión exhaustiva de la matriz de datos más reciente del TWiG (Pei et al., 2020), la cual es utilizada por numerosos autores. Se realizaron más de 200 modificaciones en la matriz en referencia a los Unenlagiidae, sobre la base de observaciones de primera mano de los materiales. Esto dio como resultado árboles de consenso que difieren significativamente de los resultados de Pei et al. (2020). Particularmente, en un primer análisis, Unenlagiidae se anida como grupo hermano de Avialae (en árboles de consenso con caracteres de igual peso; similar al árbol propuesto por Agnolín y Novas, 2011; 2013), o como un subclado dentro de Dromaeosauridae (en árboles de consenso con caracteres con peso implicado; similar al árbol propuesto por Pei et al., 2020). En un segundo análisis, tomando como base la matriz del TWiG, fueron agregados 23 caracteres nuevos. Este análisis arrojó en todos sus árboles (tanto con caracteres con igual peso o con igual implicado) diferencias notables con la hipótesis filogenética postulada por Pei et al. (2020). Entre las diferencias se observa la recuperación de un Deinonychosauria polifilético, Unenlagiidae anidado en Aviale, más derivado que Archaeopterygiidae, y la obtención del clado Unenlagiinia que incluye a Unenlagiidae y a Halszkaraptor. Estos resultados recuerdan en parte a los propuestos por Agnolín y Novas (2011; 2013) y sustentan la cercanía entre Unenlagiidae y Avialae. Por último, el análisis craneano de Austroraptor, permitió el reconocimiento de características morfológicas diagnósticas de unenlágidos como ser maxilares elongados, huesos craneanos altamente neumatizados, ausencia de cresta sagital en los parietales, y un elevado número de dientes. Los posibles hábitos piscívoros de los unenlágidos postulados por autores previos (Gianechini y Apesteguía, 2011), se ven soportados por la presencia en Austroraptor de dientes curvados distolingualmente y una particular torsión de los dientes del dentario. El cráneo bajo y de contorno subtriangular, con órbitas altas, fenestras anteorbitales anteroposteriormente largas y numerosos dientes recuerdan a la morfología de reptiles posiblemente piscívoros como pterosaurios y spinosaurios. La estimación de la masa corporal de Austroraptor en 460 kg, junto el análisis anatómico, permitió reconocer la correlación entre el gran tamaño y ciertos rasgos osteológicos (concurrentes en distintos taxones de paravianos gigantes) como vértebras dorsales altas, anteroposteriormente cortas y neumatizadas, y acortamiento del miembro anterior y fémur. Esto permitió sostener la ocurrencia de al menos 4 eventos de gigantismo en diferentes clados de paravianos (Troodontidae, Microraptoria, Dromaeosauridae y Unenlagiidae). Finalmente, el análisis del registro de unenlágidos y de otros terópodos contemporáneos de Patagonia y Gondwana demuestra la versatilidad y disparidad morfológica de los unenlágidos ocupando diversos nichos en las unidades registradas, incluso el de depredador más grande la unidad como en el caso de Austroraptor., Paraves is the dinosaur clade with the largest number of species, that include the extinct non-avian theropods such as Troodon and Velociraptor, and birds, the only living dinosaurs (Avialae: Dinosauria, Gauthier 1986) with more than 11,000 species. The oldest record of the clade is from 160 million years before the present (Middle Jurassic; Anchiornis; Xu et al., 2008). To date, about 80 species of non-avian paravians are known, whose remains have been found on all continents, including Antarctica. The first Gondwanan paravian remains were reported in 1995 by Rauhut and Werner from Upper Cretaceous rocks of Sudan, Africa (Wadi Milk Formation; Cenomanian). However, it was not until the finds made in Patagonia in the late 1990s that an unsuspected radiation of Gondwanan paravians began to be revealed. The first taxon described from Patagonia was Unenlagia comahuensis, reported in 1997 by Novas and Puerta, collected in Upper Cretaceous rocks from Neuquén (Portezuelo Formation; Turonian- Coniacian). Towards 1999, Bonaparte coined the clade Unenlagiidae to unite Unenlagia and the enigmatic Rahonavis from Madagascar, originally interpreted as an Avialae. Currently, 8 species of paravians have been found in Cretaceous rocks from Argentina, Madagascar, Brazil and Antarctica, many of them with uncertain affinities and whose affinity to Unenlagiidae is questionable (Turner et al., 2012; Agnolín et al., 2019; Pei et al., 2020). In recent years there has been an exponential increase in the number of specialized studies on Unenlagiidae, including contributions on bone anatomy, studies on pneumaticity, phylogeny, morphofunctional analyses, and paleobiological aspects related to the origin of flapping flight in birds (Novas, 2004; Agnolín and Novas 2011; 2013; Gianechini and Apesteguía, 2011; Gianechini et al, 2011a,b; 2017; 2018; 2018; 2020; Gianechini, 2014; Brissón Egli et al., 2017; Motta et al., 2016, 2018, 2020; Novas et al., 2018; 2019; 2020; 2021; Agnolín et al., 2019; Forster et al., 2020; Gianechini and Zurriaguz, 2021). While the understanding of the anatomy of unenlagid paravians has increased in recent years, new discoveries made in other territories (e.g. Halskaraptor, Tianyuraptor) and in the southern hemisphere (e.g. Overoraptor, Imperobator) make it necessary to redescribe and reinterpret previous findings under the new and complex phylogenetic context. With this premise, in the present thesis comprehensive osteological studies of the Patagonian paravians Austroraptor cabazai, Pamparaptor micros, Overoraptor chimentoi and the remains of unenlagids from the Chorrillo Formation, as well as anatomical commentaries of the Antarctic taxon Imperobator antarcticus and the Brazilian taxon Ypupiara lopai, were carried out. The osteological studies allowed to establish a new updated diagnosis for Austroraptor cabazai. Also, unpublished materials of Austroraptor (e.g. quadrate) and Pamparaptor (e.g. posterior end of the mandible) were described for the first time. Furthermore, extensive comparisons were carried out between Unenlagiidae and a large number of paravians, particularly with regard to cranial elements, cervical and dorsal vertebrae, variability of dentition, and anatomical features of the forelimb and hind limb. This resulted in the recognition of several novel characters of phylogenetic utility. CT scans of cranial bones and vertebrae of Austroraptor cabazai provided valuable information about internal anatomical features. Wide recesses were observed in the maxillary, lacrimal and postorbital bones, suggesting the invasion of wide paranasal and suborbital sinuses more developed than in other paravians. In particular, the maxilla demonstrated the complete absence of a promaxillary fenestra and the invasion of the paranasal sinuses into the maxilla through the interfenestral septum, a trait that occurs in the troodontid Byronosaurus, and which contrasts with other paravians (e.g. dromaosaurids, Archaeopteryx) where a promaxillary fenestra is present and the paranasal sinus does not invade the maxillary fenestra. The presence of large pneumatic recesses in the lacrimal and postorbital bones of Austroraptor, as well as a surangular sinus lacking a fenestra in Austroraptor and Pamparaptor, are some anatomical features that have been discussed and are of great importance to understand the morphological disparity of the cranial elements within the different subclades of Paraves. CT scans of Austroraptor vertebrae showed the presence of pleurocoels with recesses internally invading both the vertebral centra and the neural arch, similar to what occurs in Unenlagia, as opposed to Buitreraptor (Gianechini and Zurriaguz, 2021). The revision of Imperobator (Ely and Case, 2019) elucidated similarities and differences with other paravians, which resulted in phylogenetic analysis supporting its recognition as a member of the clade Unenlagiidae. Imperobator shares with other unenlagids the presence of a compressed metatarsal III with a T-shaped section, which brings it closer to the unenlagids (Agnolín et al., 2010). However, and as indicated by previous authors (Case et al., 2007; Turner et al., 2012; Ely and Case, 2019), Imperobator shows a unique combination of features, unknown in other unenlagids, such as fused fibula and calcaneus, metatarsal II without a differentiated intercondylar groove and reduced flexor tubercle of the pedal phalangeal II-3. The revision of Ypupiara (Brum et al., 2021) shows that this taxon possesses notable differences with unenlagids, such as the presence of acute and conical teeth in the maxilla, broad and subquadrangular interdental plates, and the absence of rugosities and foramina on the lateral face of the maxilla. Moreover, the lack of diagnostic features does not allow its reference to any specific clade within Theropoda, and consequently, it is considered as Theropoda indet. The phylogenetic placement of Unenlagiidae within Paraves is still debated, despite recent revisions and integrative work on this group (Agnolín and Novas, 2011; 2013: Gianechini and Apesteguía 2011; Gianechini 2014; Agnolín et al., 2019). Moreover, novel phylogenetic analyses, as well as the recent publication of new paravians from China, have modified the classical scheme of the clade Paraves. The revision of the unenlagids in the light of the new discoveries and the anatomical studies carried out in the present thesis have allowed the addition of novel data with clear phylogenetic potential. Thus, a comprehensive revision of the most recent TWiG data matrix (Pei et al., 2020), which is used by numerous authors, was carried out. More than 200 modifications were made to the matrix in reference to the Unenlagiidae, based on first-hand observations of the materials. This resulted in consensus trees that differ significantly from the results of Pei et al. (2020). Particularly, in a first analysis, Unenlagiidae nested as a sister group to Avialae (in consensus trees with characters of equal weight; similar to the tree proposed by Agnolín and Novas, 2011; 2013), or as a subclade within Dromaeosauridae (in consensus trees with characters with implied weight; similar to the tree proposed by Pei et al., 2020). In a second analysis, based on the TWiG matrix, 23 new traits were added. This analysis threw in all its trees (both with equally weighted or equally involved characters) notable differences with the phylogenetic hypothesis postulated by Pei et al. (2020). Among the differences are the recovery of a polyphyletic Deinonychosauria, Unenlagiidae nested in Aviale more derived than Archaeopterygiidae, and the recovery of the Unenlagiinia clade that includes Unenlagiidae and Halszkaraptor. These results are partly reminiscent of those proposed by Agnolín and Novas (2011; 2013) and support the closeness between Unenlagiidae and Avialae. Finally, the cranial analysis of Austroraptor allowed the recognition of morphological characteristics diagnostic of unenlagids, such as elongated jaws, highly pneumatized cranial bones, absence of sagittal crest in the parietals, and a high number of teeth. The possible piscivorous habits of unenlagids postulated by previous authors (Gianechini and Apesteguía, 2011), are supported by the presence in Austroraptor of distolingually curved teeth and a particular torsion of the dentary teeth. The low, subtriangular skull, with high orbits, anteroposteriorly long anteorbital fenestrae and numerous teeth are reminiscent of the morphology of possibly piscivorous reptiles such as pterosaurs and spinosaurs. The estimation of the body mass of Austroraptor at 460 kg, together with the anatomical analysis, allowed to recognize the correlation between the large size and certain osteological features (concurrent in different taxa of giant paravians) such as high dorsal vertebrae, anteroposteriorly short and pneumatized, and shortening of the forelimb and femur. This allowed us to support the occurrence of at least 4 gigantism events in different paravian clades (Troodontidae, Microraptoria, Eudromaeosauridae and Unenlagiidae). Finally, the analysis of the record of unenlagids and other contemporary theropods from Patagonia and Gondwana demonstrates the versatility and morphological disparity of unenlagids occupying diverse niches in the recorded units, including that of biggest predator of it unit for the case of Austroraptor., Facultad de Ciencias Naturales y Museo
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- 2023
21. Optimisation of ethanol fermentation of Jerusalem artichoke tuber juice using simple technology for a decentralised and sustainable ethanol production
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Matías, Javier, Encinar, José María, González, Jerónimo, and González, Juan Félix
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- 2015
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22. Shotgun proteomics of quinoa seeds reveals chitinases enrichment under rainfed conditions
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Reguera, Maria, primary, Poza-Viejo, Laura, additional, Redondo-Nieto, Miguel, additional, Matías, Javier, additional, Cruz, Verónica, additional, Granado-Rodríguez, Sara, additional, Maestro-Gaitán, Isaac, additional, Olmos, Enrique, additional, and Bolanos, Luis, additional
- Published
- 2022
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23. Changes in nutritional quality-related traits of quinoa seeds under different storage conditions
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Granado-Rodríguez, Sara, primary, Maestro-Gaitán, Isaac, additional, Matías, Javier, additional, Rodríguez, María José, additional, Calvo, Patricia, additional, Hernández, Luis Eduardo, additional, Bolaños, Luis, additional, and Reguera, Maria, additional
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- 2022
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24. Assessment of Modular Construction System Made with Low Environmental Impact Construction Materials for Achieving Sustainable Housing Projects
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Guisel Romero Quidel, Matías Javier Soto Acuña, Carlos Javier Rojas Herrera, Karin Rodríguez Neira, and Juan Pablo Cárdenas-Ramírez
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Renewable Energy, Sustainability and the Environment ,Geography, Planning and Development ,sustainable construction ,WikiHouse ,subtractive manufacturing ,Net Zero ,Building and Construction ,Management, Monitoring, Policy and Law - Abstract
The construction industry faces a significant challenge in addressing both the housing crisis and climate change. To mitigate this challenge, there has been a push toward the incorporation of industrialization in the construction process to improve product quality, reduce execution times, and lower production costs. However, it is also crucial to implement materials with sustainable characteristics to decrease the environmental impact of housing. In light of this, the present study analyzes the environmental and economic impacts through the development(design) of a modular construction system using materials with low environmental impact. Specifically, the structural components of the system are constructed using plywood boards, thermal insulation is provided by wheat straw, and the interior finish is made of clay plaster. The Skylark 250 model served as the chassis for the structure, with the wheat straw being applied through a blowing process and the clay plaster applied manually. Thermal transmittance, energy demand, environmental impact, and economic analysis were all evaluated for this solution. The study results yielded a modular housing solution with an energy demand of 55 (kWh/m2/year), which, when paired with photovoltaic panels, meets the Net Zero challenge. In terms of construction time, the proposed system requires 44% less time than traditional construction methods and is 29% less expensive economically, making it an attractive option for the housing market.
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- 2023
25. Diversity and dynamics in larval digenean assemblages parasitizing
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Florencia Paz, Campanini, Matías Javier, Merlo, María Agustina, Méndez Casariego, and Manuela, Parietti
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Lakes ,Larva ,Snails ,Argentina ,Animals ,Trematoda ,Ecosystem - Abstract
Digeneans have important roles within ecosystems; however, it is estimated that only 14% of the species have been described. Therefore, before being able to detail their role, digenean species’ identification and the diversity present in the ecosystems must be known. In this study, the diversity and the temporal-spatial dynamics of larval digeneans in the freshwater snail Heleobia parchappii were analysed in a shallow lake. Specimens of H. parchappii were collected seasonally at three points during one year and a total of 2871 molluscs were analysed. A total of 23 species of digenea were registered and both the overall prevalence and the composition of the assemblages presented temporal and spatial variations, responding to the differential environmental conditions characteristics (anthropic effect, presence of native forests, and differential use of the habitat by the definitive hosts) of three sampled sites. The assemblages of larval digenean in their first intermediate host support the idea that this area is of great importance in biodiversity, and could be endemic areas of some species of digenean that use reptiles, amphibians and bats as hosts, groups that are at risk of conservation. Protection of these environments is a fundamental pillar in the policies for the conservation of wild flora and fauna.
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- 2022
26. Teledetección aplicada al agro : Clasificación de cultivos a partir de imágenes satelitales
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Barni, Matías javier, Ratto, Elisa, Besteiro, Sebastián, and Barragán Pera, Héctor Mariano
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Imágenes satelitales ,Agricultura ,Teledetección ,Ciencias Agrarias - Abstract
El sector agrícola viene transitando un profundo cambio en la obtención y la utilización de nuevas tecnologías, buscando anticiparse a eventos edafoclimáticos que puedan inferir en los resultados productivos y facilitar la toma de decisiones de forma remota, empujando al profesional a un uso cada vez más extenso de herramientas tales como la teledetección y el manejo de información geoespacial en entornos GIS. La clasificación de imágenes provenientes de sensores remotos permite monitorear dichos cambios con precisión, en forma periódica y a menores costos que con los métodos tradicionales. Las imágenes de los satélites Landsat y Sentinel son ampliamente utilizadas para realizar clasificaciones de las coberturas del terreno, dado que presentan resoluciones espaciales convenientes, una cobertura espectral similar entre ellas y carecen de costos para su descarga y manipuleo. En el presente trabajo se analizaron las ventajas y desventajas del uso de imágenes satelitales de mediana resolución (LANDSAT 8 OLI y Sentinel 2 MSI) al realizar clasificaciones supervisadas de los cultivos estivales existentes en una campaña agrícola en campos ubicados en el partido de Lobos, provincia de Buenos Aires. Para el logro del objetivo se trabajó sobre 8 imágenes (cuatro Landsat 8 y cuatro Sentinel 2) que abarcan el periodo de estudio desde Noviembre del 2019 hasta Abril del 2020, empleando diferentes métodos de clasificación supervisada del complemento Semiautomatic Classification Plugin (SCP) dentro del software Qgis. El procedimiento ha requerido no solo de la obtención de las imágenes satelitales, su procesamiento y validación, sino también del relevamiento de datos de campo. Se partió del supuesto que las clasificaciones derivadas del uso de ambas imágenes no presentan variaciones provocadas por la resolución espectral, pero sí frente a las diferencias en la resolución espacial, siendo las imágenes Landsat las que mejor representan la realidad de campo para el área de estudio. Los resultados obtenidos no fueron congruentes con la hipótesis, ya que las imágenes que representaron mejor la realidad de campo corresponden a Sentinel 2., Facultad de Ciencias Agrarias y Forestales
- Published
- 2022
27. Population dynamic of two digenean species parasitizing the grass shrimp Palaemonetes argentinus Nobili 1901 (Decapoda: Palaemonidae) in a lentic environment from Argentina
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Parietti, Manuela, Merlo, Matías Javier, and Etchegoin, Jorge Alejandro
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- 2015
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28. Changes in Quinoa Seed Fatty Acid Profile Under Heat Stress Field Conditions
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Matías, Javier, primary, Rodríguez, María José, additional, Granado-Rodríguez, Sara, additional, Cruz, Verónica, additional, Calvo, Patricia, additional, and Reguera, María, additional
- Published
- 2022
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29. Visualising the concept of metabolic regulation in bacteria: a simple laboratory experiment on polyhydroxybutyrate storage
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Claudio Valverde, Mario Enrique Lozano, Sandra Elizabeth Goñi, Natalia Belén Robledo, Matías Javier Garavaglia, and Antonio Lagares
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05 social sciences ,050301 education ,050109 social psychology ,Biology ,biology.organism_classification ,Education ,Polyhydroxybutyrate ,Metabolic regulation ,Simple (abstract algebra) ,0501 psychology and cognitive sciences ,Biochemical engineering ,Laboratory experiment ,General Agricultural and Biological Sciences ,0503 education ,Bacteria - Abstract
Regulation is a key concept for understanding the dynamics of metabolism in bacteria. This report outlines a simple laboratory experiment aimed at studying a key form of regulation in bacterial met...
- Published
- 2020
30. Tasa de consumo y producción de leche de vacas lecheras bajo distintas intensidades de defoliación de festuca en primavera
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Oborsky Cancela, Matías Javier, Chilibroste, Pablo, Mattiauda, Diego, and Oborsky Cancela Matías Javier
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Interacción planta-animal ,PRODUCCION LECHERA ,Tasa de consumo ,GANADO DE LECHE ,Pastoreo ,RELACIONES PLANTA ANIMAL ,CONSUMO - Abstract
El objetivo de este trabajo fue estudiar y cuantificar la tasa de consumo de materia seca (MS) durante la primera sesión de pastoreo (am y pm), el consumo total diario y la producción diaria de leche de vacas en lactación. Para ello se realizaron tres tratamientos de altura remanente, TC (9 cm), TM (12 cm) y TL (15 cm). El diseño fue en bloques completos al azar con 4 repeticiones espaciales. El criterio de entrada al pastoreo para cada ciclo de pastoreo (2 ciclos) fue cuando la pastura alcanzaba el estado fenológico de 3 hojas. Se utilizaron 36 vacas en ordeñe paridas en otoño 2017, bloqueadas por peso vivo (633 ± 69 kg), condición corporal (3,1 ± 0,3) y número de lactancias (2,6 ± 0,8). La medición de tasa de consumo se hizo por el método de doble pesaje descrito por Penning y Hooper (1985), se realizó al inicio y fin del ciclo de pastoreo y en cada turno de pastoreo (am y pm), para la primera sesión de pastoreo. Los datos de consumo de MS se estimaron por el método de alcanos. La producción de leche se registró diariamente. Los datos se analizaron con el procedimiento GLIMMIX de SAS y las medias fueron comparadas con el test de Tukey (α=0,05). En el ciclo de pastoreo 1 la mayor altura remanente (TL) logró la mayor tasa de consumo (3,1 kgMS/h) y la mayor producción de leche (18,7 l/d) mientras que el consumo de MS fue mayor en TL y TM (18,4 kgMS) que en TC (14,7 kgMS). El TL logró la mejor combinación (tasa de consumo) en la cosecha de forraje que se tradujo en mayor producción de leche con mejor eficiencia de conversión. En el ciclo de pastoreo 2 no se observaron diferencias entre tratamientos en tasa de consumo (1,1 kgMS/h) mientras que la producción de leche fue superior en TL (14,3 L/d) que en TM y TC que no se diferenciaron entre sí. En este ciclo de pastoreo marcado por el estrés térmico y sin diferencias registradas en tasa de consumo el TL logró la mayor producción de leche. La menor intensidad de defoliación reflejó un aumento en la tasa de consumo y el consumo de MS traduciéndose en mayor producción de leche.
- Published
- 2021
31. Analysis of sugars by liquid chromatography-mass spectrometry in Jerusalem artichoke tubers for bioethanol production optimization
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Matías, Javier, González, Jerónimo, Royano, Luis, and Barrena, Rafael A.
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- 2011
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32. Diversity and dynamics in larval digenean assemblages parasitizing Heleobia parchappii in a freshwater shallow lake from the Southeastern Pampa plain, Argentina
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Campanini, Florencia Paz, primary, Merlo, Matías Javier, additional, Méndez Casariego, María Agustina, additional, and Parietti, Manuela, additional
- Published
- 2021
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33. Genotype-Dependent Variation of Nutritional Quality-Related Traits in Quinoa Seeds
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Granado-Rodríguez, Sara, primary, Vilariño-Rodríguez, Susana, additional, Maestro-Gaitán, Isaac, additional, Matías, Javier, additional, Rodríguez, María José, additional, Calvo, Patricia, additional, Cruz, Verónica, additional, Bolaños, Luis, additional, and Reguera, María, additional
- Published
- 2021
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34. Can the studies at a spatial scale of 100s meters detect the spatiotemporal fluctuations of a parasite assemblage?
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Parietti, Manuela, Merlo, Matías Javier, and Etchegoin, Jorge Alejandro
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- 2013
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35. Hepatitis C virus treatment failure: Clinical utility for testing resistance-associated substitutions
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Ridruejo, Ezequiel, primary, Pereson, Matías Javier, additional, Flichman, Diego M, additional, and Di Lello, Federico Alejandro, additional
- Published
- 2021
- Full Text
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36. Potential conservation of circadian clock proteins in the phylum Nematoda as revealed by bioinformatic searches.
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Andrés Romanowski, Matías Javier Garavaglia, María Eugenia Goya, Pablo Daniel Ghiringhelli, and Diego Andrés Golombek
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Medicine ,Science - Abstract
Although several circadian rhythms have been described in C. elegans, its molecular clock remains elusive. In this work we employed a novel bioinformatic approach, applying probabilistic methodologies, to search for circadian clock proteins of several of the best studied circadian model organisms of different taxa (Mus musculus, Drosophila melanogaster, Neurospora crassa, Arabidopsis thaliana and Synechoccocus elongatus) in the proteomes of C. elegans and other members of the phylum Nematoda. With this approach we found that the Nematoda contain proteins most related to the core and accessory proteins of the insect and mammalian clocks, which provide new insights into the nematode clock and the evolution of the circadian system.
- Published
- 2014
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37. Farmer Dash
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Sinnott, Matías Javier and Lucotti, Jorge
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Productividad ,Aplicaciones Móviles ,Multimedia ,Sistemas de monitoreo - Abstract
FarmerDash busca resolver las problemáticas que posee un productor porcino a la hora de criar cerdos y aumentar eficientemente su producción. Para resolver las diferentes necesidades que poseen los diferentes tipos de productores, el usuario cuenta con una app mobile en donde podrá gestionar su granja de manera remota, facilitando su trabajo y optimizando procesos. Esta app se encargar de mostrarle al usuario los datos captados por diferentes sensores instalados dentro de su granja, estos sensores están pensados en 4 modulos: Alimentación, Hidratación, Ambiente y Monitoreo. A su vez, este sistema de monitoreo tiene la particularidad de ser un sistema por módulos, es decir que se pueden adaptar a las diferentes necesidades de un productor grande o un productor pequeño. Por otro lado gracias a los datos que extraen los diferentes sensores, al usuario se le generan estadísticas y recomendaciones para mejorar su producción, a su vez se pueden comparar estas estadísticas con otras granjas cercanas. Como complemento el usuario cuenta con otras funcionalidades como gestionar a sus trabajadores y las tareas que realizan, gestionar sus animales o también acceder a noticias relacionadas., Para acceder al material audiovisual que acompaña esta tesis, hacer clic en "Enlace externo"., Facultad de Artes
- Published
- 2021
38. Magnetic Permeability Tomography for Detection of Ferromagnetic Particles in Cancer Therapy Techniques
- Author
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Oliva, Matías Javier, Veiga, Alejandro Luis, and García, Pablo Andrés
- Subjects
Hipertermia Magnética ,SoC-FPGA ,Ingeniería ,Tomografía Magnética - Abstract
La hipertermia magnética es una terapia oncológica emergente que consiste en implantar nanopartículas ferromagnéticas en tumores y elevar su temperatura mediante la aplicación de campos magnéticos de alta frecuencia. De acuerdo con la temperatura alcanzada, en el tumor se inician procesos de necrosis o de apoptosis, que permiten reducir el tejido cancerígeno. Un problema esencial de su implementaciónes determinar la posición y densidad de las nanopartículas implantadas, dado que éstas pueden migrar, encapsularse o difundirse. La tomografía magnética es una técnica actualmente en desarrollo que permite determinar, sin contacto alguno, el perfil de conductividad y de permeabilidad magnética de un cuerpo. Esto se puede utilizar para establecer la distribución de las nanopartículas utilizadas en las terapias oncológicas. La instrumentación de un equipo de tomografía magnética requiere la captura y el procesamiento de señales de alta frecuencia (del orden de los cientos de kHz y superiores) con muy alta precisión, lo cual demanda sistemas de adquisición de alta velocidad y alta resolución. En esta tesis se propone investigar las tecnologías involucradas en tomografía magnética y adquirir capacidad de diseñar y construir dispositivos factibles de ser transferidos., Universidad Nacional de La Plata
- Published
- 2021
39. Studying the Impact of Different Field Environmental Conditions on Seed Quality of Quinoa: The Case of Three Different Years Changing Seed Nutritional Traits in Southern Europe
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Granado-Rodríguez, Sara, primary, Aparicio, Nieves, additional, Matías, Javier, additional, Pérez-Romero, Luis Felipe, additional, Maestro, Isaac, additional, Gracés, Irene, additional, Pedroche, Justo Javier, additional, Haros, Claudia Monika, additional, Fernandez-Garcia, Nieves, additional, Navarro del Hierro, Joaquín, additional, Martin, Diana, additional, Bolaños, Luis, additional, and Reguera, María, additional
- Published
- 2021
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40. Heat Stress Impact on Yield and Composition of Quinoa Straw under Mediterranean Field Conditions
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Matías, Javier, primary, Cruz, Verónica, additional, and Reguera, María, additional
- Published
- 2021
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41. Heat stress lowers yields, alters nutrient uptake and changes seed quality in quinoa grown under Mediterranean field conditions
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Matías, Javier, primary, Rodríguez, María José, additional, Cruz, Verónica, additional, Calvo, Patricia, additional, and Reguera, María, additional
- Published
- 2021
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42. Entre barbijos, ollas populares y grupos de WhatsApp: mujeres, salud y cuidados ante el COVID-19 en los barrios del Gran Buenos Aires, Argentina 2020
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Aparicio, Matías Javier, Bilbao, Sofía, Saenz Valenzuela, María Macarena, and Barán Attias, Taly Judith
- Subjects
CIENCIAS SOCIALES ,purl.org/becyt/ford/5 [https] ,salud ,Tópicos Sociales ,COVID-19 ,purl.org/becyt/ford/5.4 [https] ,Sociología ,familias ,cuidados comunitarios - Abstract
El presente artículo busca dar cuenta de las estrategias desplegadas por mujeres de sectores populares del Gran Buenos Aires (Argentina), durante el Aislamiento Social, Preventivo y Obligatorio, en el espacio doméstico, el barrio y la comunidad para la gestión cotidiana de la salud y el riesgo. Desde un enfoque cualitativo, observamos dos niveles de análisis; el primero centrado en una ?ética del cuidado? que se observa en las estrategias motorizadas por referentes sociales y en las acciones de control/cuidado desplegadas en el barrio; el segundo, enfocado en las concepciones de salud y bienestar (amplia y restringida) construidas por las mujeres como principales cuidadoras, que evidencia las estrategias desplegadas así como los nuevos itinerarios terapéuticos trazados en la gestión familiar del cuidado y la salud. The present article aims to account for the strategies deployed by women from poorer sectors of Suburban Buenos Aires (Argentina), while being on Mandatory Social and Preventive Isolation (Aislamiento Social, Preventivo y Obligatorio), at home, in the neighborhood and within the community, for everyday management of healthcare and risk. From a qualitative aproach, we observe two levels of analysis: one centered on an “ethic of care”, which observes the strategies fueled by social referents, and also centered on the actions of control/care deployed in the neighborhood; the other group, focused on the notions of health and wellbeing (broad and restricted) conceived by women as the primary caregivers, as well as the new therapeutic agendas outlined in family management of caregiving and healthcare. Fil: Aparicio, Matías Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Centro de Estudios e Investigaciones Laborales; Argentina Fil: Bilbao, Sofía. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Centro de Estudios e Investigaciones Laborales; Argentina. Universidad de Buenos Aires; Argentina Fil: Saenz Valenzuela, María Macarena. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Centro de Estudios e Investigaciones Laborales; Argentina Fil: Barán Attias, Taly Judith. Universidad Nacional Arturo Jauretche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Centro de Estudios e Investigaciones Laborales; Argentina
- Published
- 2020
43. Pope Francis: Fluctuations in religiosity and evaluations of his figure
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Mallimaci, Fortunato Horacio, Gialdino, Mariano Rolando, and Aparicio, Matías Javier
- Subjects
purl.org/becyt/ford/5 [https] ,SIN RELIGION ,EVANGELICOS ,PAPA FRANCISCO ,CATOLICOS ,purl.org/becyt/ford/5.4 [https] - Abstract
El nombramiento de Jorge Bergoglio como Francisco es un hito inédito queirrumpió en la religiosidad y la agenda pública argentina: este artículo analiza ydescribe el impacto en la religiosidad del país a partir de datos cuantitativos, ylas valoraciones que circulan alrededor de la figura del papa argentino.. Coneste fin se utilizaron los datos de la Segunda Encuesta Nacional de Creencias yActitudes Religiosas en la Argentina. Los datos fueron desagregados para suanálisis en tres secciones, una primera referida al catolicismo, una segunda paralos evangélicos, y la tercera centrada en el grupo de los sin religión, todo lo cual se cruza posteriormente con los datos totales para el país. Las variaciones quelos habitantes argentinos registran en términos de religiosidad, y los valores que movilizan son interpretados a partir de cruces con indicadores sociodemográfi-cos. The appointment of Jorge Bergoglio as Francisco would seem to represent a milestone that broke in the religiosity and the public agenda of Argentina: this article analyzes and describes the impact on religiosity in this country based on quantitative data, in relation to the appointment of the new Argentine Pope and the evaluations that circulate around his figure. For this purpose, data from the Second National Survey of Religious Beliefs and Attitudes in Argentina were used. The data was disaggregated for analysis into three sections, the first refers to Catholicism, the second to evangelicals, and the third focuses on the group of those without religion, all of which is later crossed with the total data for the country. The variations that Argentine inhabitants register in terms of religiosity, and the values and valuations that it mobilizes, are interpreted from crosses with sociodemographic indicators. Fil: Mallimaci, Fortunato Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Centro de Estudios e Investigaciones Laborales; Argentina Fil: Gialdino, Mariano Rolando. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Centro de Estudios e Investigaciones Laborales; Argentina Fil: Aparicio, Matías Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Centro de Estudios e Investigaciones Laborales; Argentina
- Published
- 2020
44. Disonancias de la vida moderna. Identidad y diferencia en la sociología de Georg Simmel
- Author
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Matías Javier Romani
- Subjects
Sociología de la Modernidad ,Identidad cultural ,Diferencia cultural ,Individualismo ,Communication. Mass media ,P87-96 - Abstract
La irrupción de lo nuevo en la historia aparece en el pensamiento de Georg Simmel a través de una multiplicidad de figuras que encierran tendencias contradictorias. Algo que la mayoría de las interpretaciones acerca de lo moderno han pasado por alto estas tensiones cayendo muchas veces en el sesgo de la unilateralidad. O bien, se recurre a un sujeto hipostasiado que extiende sus lazos de continuidad con la tradición hermenéutica; o a la acentuación del gélido mundo de los objetos que culmina en la desesperación cultural. De un lado, una modernidad reflexiva; del otro, el desencantamiento del mundo. Ambas direcciones encuentran expresión en la obra de Simmel como líneas de fuerza que se cruzan permanentemente en las diferentes instancias de su pensamiento; de modo que, al intentar reducirlas a una única expresión pierden su carácter dinámico y contradictorio, en última instancia, su aspereza productiva. De ahí, que la única posibilidad para no caer en el reduccionismo sea captar desde una perspectiva íntegra el universo figural de la modernidad en Simmel donde las imágenes parecen desdoblarse, habitadas por las polaridad de la identidad y la diferencia.
- Published
- 2013
45. Perception and adoption of new agricultural technologies in a Northern Inland Mozambique
- Author
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Matías, Javier Hargreaves M, primary, Antonio, Hargreaves B., additional, and José, Luis Riveros F., additional
- Published
- 2021
- Full Text
- View/download PDF
46. Yield and composition of quinoa stems under Mediterranean conditions
- Author
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Matías, Javier and Sobrado, Verónica Cruz
- Published
- 2020
- Full Text
- View/download PDF
47. Winter cover crops effects on soil organic carbon and soil physical quality in a Typical Argiudoll under continuous soybean cropping
- Author
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Guido Lautaro Bellora, Matías Javier Turinetto, María Paz Salazar, Nicolás Guillermo Polich, Luis Alberto Lozano, Carlos Germán Soracco, and Rafael Villarreal
- Subjects
particulate organic carbon ,Agriculture (General) ,complex mixtures ,S1-972 ,Hydraulic conductivity ,Degraded soils ,fulvic acids ,Ciencias Agrarias ,Cover crop ,Soybean crop ,Chemical decomposition ,saturated hydraulic conductivity ,fungi ,food and beverages ,04 agricultural and veterinary sciences ,Soil carbon ,purl.org/becyt/ford/4.5 [https] ,humic acids ,Agronomy ,water-conducting porosity ,Soil water ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,Environmental science ,Cropping ,purl.org/becyt/ford/4 [https] - Abstract
The massive adoption of no-tillage (NT), along with the simplification of the cropping sequences has led to physical and chemical degradation of soils. To recover degraded soils, cover crops have been proposed as an alternative to increase soil organic carbon (SOC) and to improve soil physical quality (SPQ). This study aimed (i) to determine the content of SOC and its physical and chemical fractions at different layers and positions, in a soil with a soybean crop under NT with and without winter cover crops, and (ii) to determine SPQ indicators in a soybean crop under NT with and without winter cover crops. Measures and samples were made on a field experiment in a typical Argiudoll of the Argentinean Pampas. Soil organic carbon, coarse and fine particulate organic carbon (POCc and POCf), mineral associated organic carbon (MOC), fulvic acids (FA), humic acids (HA), and humins (H) were determined. Soil physical quality indicators determined were: soil bulk density and total porosity from field samples, and saturated hydraulic conductivity, water-conducting macro and mesoporosity, and total porosity connectivity from field water infiltration data. After eight years, cover crops did not cause any observable change in whole SOC content, but significant differences were observed for some SOC fractions. Humic acids and POCc had 40 and 25 % increases, respectively, in the cover crop treatment. Mineral associated organic carbon and H decreased by 9 and 7 % in cover crop treatment. Soil physical quality did not improve after eight years of cover crops. This can be related to degradation processes after 20 years of soybean monoculture under NT, and to the low ability of Argiudolls to recover from physical degradation., Facultad de Ciencias Agrarias y Forestales
- Published
- 2020
48. COMPOSICIÓN NUTRICIONAL DE SEIS VARIEDADES DE QUINOA (Chenopodium quinoa Willd) CULTIVADAS EN EL SUR DE EUROPA
- Author
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Gómez, María José Rodríguez, Matías, Javier, and Sobrado, Verónica Cruz
- Published
- 2020
- Full Text
- View/download PDF
49. PERFIL DE ÁCIDOS GRASOS Y VALOR FUNCIONAL DE SEIS VARIEDADES DE QUINOA (Chenopodium quinoa Willd) CULTIVADAS EN EL SUR DE EUROPA
- Author
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Calvo, Patricia, Matías, Javier, Sobrado, Verónica Cruz, and Gómez, María José Rodríguez
- Published
- 2020
- Full Text
- View/download PDF
50. Mutaciones del consumo cultural en el Siglo XXI. Tecnologías, espacios y experiencias
- Author
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Romani, Matías Javier, primary
- Published
- 2020
- Full Text
- View/download PDF
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