UVC-LED assisted photo-Fenton/peroxydisulfate processes for microcontaminant and bacteria removal in a continuous flow reactor according to EU 2020/741 Benzaquén, Tamara Belén; Pichel, Natalia; Soriano Molina, Paula; Casas López, José Luis; Li Puma, Gianluca; Sánchez Pérez, José Antonio Bacteria inactivation (Escherichia coli (E. coli), total coliforms, Clostridium perfringens (C. perfringens)) and simultaneous removal of ubiquitous microcontaminants in actual municipal wastewater treatment plant secondary effluents was investigated at neutral pH using the UVC-LED assisted photo-Fenton reaction system operated in continuous flow. E. coli concentration ≤ 10 CFU/100 mL and 38 % microcontaminant removal was achieved in the reaction system at a hydraulic residence time of 30 min. UVC light alone and UVC light combined with an oxidant source (hydrogen peroxide, H2O2, or peroxydisulfate, S2O82−) were found to have a predominant effect on disinfection, meeting the EU 2020/741 validation (≥5 log10 reduction) and monitoring (≤10 CFU/100 mL) targets for both E. coli and C. perfringens after 30 min of treatment in batch mode. However, in the presence of either 0.05 or 0.1 mM of ferric nitrilotriacetate (Fe3+-NTA) the bacteria inactivation kinetics decreased due to reduced UVC light penetration along the water depth. In contrast, microcontaminant removal was accelerated using 0.05 or 0.1 mM of Fe3+-NTA and 1.47 mM H2O2. Overall, the results revealed that the treatment conditions favouring microcontaminant removal hindered disinfection and vice versa, and that the disinfection levels of C. perfringens (≤102 CFU/100 mL) reached in the batch mode experiments could not be attained under the continuous flow regime. This points out the need of performing disinfection experiments under continuous flow operation, as shown in the present study to determine the disinfection performance of UVC-LED assisted photo-Fenton reaction systems.

Las fronteras entre filosofía y religión en el pensamiento ricoeuriano: Un diálogo a propósito del problema del mal; The boundaries between philosophy and religion in Ricoeur’s thought: A dialogue on the problem of evil González, Daiana Marlén Nuestro trabajo propone un análisis de las ideas de libertad, mal y perdón a fin de transitar la frontera entre el discurso propiamente filosófico y el discurso religioso o kerigmático en la obra de Paul Ricoeur. El paso por estas ideas nos permitirá distinguir tres formas de contacto posibles entre filosofía y religión. Así, hablaremos en un primer momento de una aproximación; luego, trataremos de definir la frontera o separación que Ricoeur establece entre ambas a partir de la cuestión de la hermenéutica y, finalmente, plantearemos la posibilidad de un olvido de las fronteras propiciado por el problema del perdón y de la falta. Teniendo como eje principal el problema del mal en el pensamiento del filósofo francés nuestra tesis principal será sostener que con la propuesta del perdón difícil culmina un diálogo entre filosofía y religión en donde las fronteras entre una y otra se desvanecen.; This paper offers an analysis of the ideas of freedom, evil and forgiveness in order to cross the border between the philosophical discourse itself and the religious or kerygmatic discourse in Paul Ricoeur’s work. By passing through these ideas, we will be able to distinguish three possible forms of contact between philosophy and religion. Thus, we will first talk about an approximation; then, we will try to define the border or separation that Ricoeur establishes between the two based on the question of hermeneutics. Finally, we will raise the possibility of a forgetting of borders brought about by the problem of forgiveness and fault. Having as its main axis the problem of evil in the thought of the French philosopher, our main thesis will be to argue that with the proposal of difficult forgiveness culminates a dialogue between philosophy and religion in which the boundaries between one and the other vanish.

Chemical abundances of LINER galaxies - nitrogen abundance estimations Oliveira, C. B.; Krabbe, Angela; Dors, Oli L.; Zinchenko, I. A.; Hernandez Jimenez, Jose Andres; Cardaci, Monica Viviana; Hägele, Guillermo Federico; Ilha, G. S. In this work, we investigated the nitrogen and oxygen abundances in a sample of galaxies with Low Ionization Nuclear Emission Regions (LINERs) in their nucleus. Optical spectroscopic data (3600 - 10000 Å) of 40 LINERs from the Mapping Nearby Galaxies (MaNGA) survey were considered. Only objects classified as retired galaxies, i.e. whose main ionization sources are post-Asymptotic Giant Branch (pAGB) stars, were selected. The abundance estimates were obtained through detailed photoionization models built with the CLOUDY code to reproduce a set of observational emission line intensities ratios of the sample. Our results show that LINERs have oxygen and nitrogen abundances in the ranges of 8.0≲12+log(O/H)≲9.0 (mean value 8.74 ± 0.27) and 7.6≲12+log(N/H)≲8.5 (mean value 8.05 ± 0.25), respectively. About 70% of the sample have oversolar O/H and N/H abundances. Our abundance estimates are in consonance with those for Seyfert 2 nuclei and H II regions with the highest metallicity, indicating that these distinct object classes show similar enrichment of the interstellar medium (ISM). The LINERs in our sample are located in the higher N/O region of the N/O versus O/H diagram, showing an unexpected negative correlation between these two parameters. These results suggest that these LINERs mainly exhibit a secondary nitrogen production and could be acting some other mechanisms that deviate them from the usual theoretical secondary nitrogen production curve and the H II regions observations. However, we did not find any evidence in our data able to support the literature suggested mechanisms. On the other hand, our results show that LINERs do not present any correlation between the N/O abundances and the stellar masses of the hosting galaxies.

Impact of Parenteral Maternal Supplementation with Trace Minerals and Vitamins on Neonatal Calf Antioxidant System and Growth in a Dairy Herd Miqueo, Evangelina; Mattioli, Guillermo Alberto; Moore, Dadin Prando; Bilbao, María Guillermina; Moran, Karen Daiana; Relling, Alejandro Enrique Oxidative stress may affect new born calves due to high stress suffered around birth. We hypothesized that maternal supplementation with micronutrients and vitamins in late gestation enhance the neonatal calf’s antioxidant system, decreasing the occurrence and duration of diarrhea, and improving growth from birth through weaning. To test this hypothesis, 80 multiparous cows were cluster-assigned to treatment groups. Treated group (TG) cows received mineral and vitamin supplementation while control group (CG) cows received saline solution. Feed intake and fecal score were measured daily until the ninth week. Weight and body measurements were registered weekly, and blood samples were collected from postpartum cows and calves after birth and at 7, 14, and 63 days of life. Although CG calves had greater fecal scores (p = 0.01), diarrhea characteristics did not differ. Calves in the TG showed greater starter intake (p = 0.04). Feed efficiency showed a trend with treatment-age interaction (p = 0.06). Calves in the CG had wider hips in the first week (p = 0.03), but not by the ninth week. Total antioxidant status, thiobarbituric acid reactive substances, and haptoglobin did not differ between treatment groups. Serum metabolites showed no differences. Supplementation did not impact calf antioxidant system or growth in the first two months.

First bioprospecting study of skin host: Defense peptides in Odontophrynus americanus Cancelarich, Natalia Lorena; Arrulo, Miriam; Gugliotti, Sariah Trillo; Barbosa, Eder A; Moreira, Daniela; Basso, Nestor Guillermo; Perez, Luis Orlando; Teixeira, Cátia; Gomes, Paula; de la Torre, Beatriz G.; Albericio, Fernando; Eaton, Peter; Leite, José Roberto de Souza Almeida; Marani, Mariela Mirta The amphibians adaptation to diverse environments is closely related to the characteristics of their skin. The complex glandular system of frogs skin plays a pivotal role in enabling these animals to thrive in both aquatic and terrestrial habitats, and comprise crucial functions such as respiration, water balance, as well as serving as a defensive barrier due to the secretion of bioactive compounds. We herein report the first investigation on the skin secretion of O. americanus, as a potential source of bioactive peptides and also as an indicator of its evolutionary adaptations to changing environments. Americanin-1 was isolated and identified as a neutral peptide exhibiting moderate antibacterial activity against E. coli. Its amphipathic sequence including 19 amino acids and showing a propensity for alpha-helix structure, is discussed. Comparisons of the histomorphology of the skin of O. americanus with other previously documented species within the same genus revealed distinctive features in the Patagonian specimen, differing from conspecifics from other Argentine provinces. The presence of the Eberth-Katschenko layer, a prevalence of iridophores, and the existence of glycoconjugates in its serous glands, suggest that the integument is adapted to retain skin moisture. This adaptation is in line with the prevailing aridity of its native habitat.

Azúcar, historia y patrimonio industrial en el oriente tucumano: lugares de memoria de Lastenia (noroeste argentino); Açúcar, história e patrimônio industrial no oriente tucumano: lugares de memória de Lastenia (noroeste argentino); Sugar, history, and industrial heritage in eastern Tucumán: sites of memory of Lastenia (northwest Argentina) Villar, Fernando Andrés; Ataliva, Víctor Hugo El ingenio azucarero Lastenia (Tucumán, Argentina) cerró sus puertas el 22 de agosto de 1966 tras anunciarse el decreto-ley 16.926, impulsado por un gobierno de facto autodenominado Revolución Argentina. Con una profunda trayectoria en el territorio que actualmente comprende la localidad homónima, ese espacio productivo marcó su desarrollo social, económico y cultural. Aunque desde el punto de vista urbano la localidad de Lastenia es concebida como un componente más del aglomerado Gran San Miguel de Tucumán, se trata de un escenario dinámico con particularidades propias, un territorio jalonado por sitios que remiten a los procesos identitarios locales. Presentamos una primera aproximación a los espacios sociales que, desde las representaciones de vecinas y vecinos de la localidad, se comportan como fundantes y diacríticos de la identidad lasteniense. En este trabajo confluyen, además, los resultados parciales de proyectos de investigación realizados desde el año 2013 que en líneas generales impulsan la revalorización de los recursos culturales del oriente tucumano desde una perspectiva situada.; Em 22 de agosto de 1966, o engenho de açúcar Lastenia (Tucumán, Argentina) fechou suas portas após o anúncio do Decreto-lei n.º 16.926, impulsionado por um governo de fato autodenominado Revolução Argentina. Com uma história profunda no território que atualmente compreende a localidade homônima, esse espaço produtivo moldou seu desenvolvimento social, econômico e cultural. Embora do ponto de vista urbano a localidade de Lastenia seja concebida apenas como mais um componente da área metropolitana de Grande São Miguel de Tucumán, é um cenário dinâmico com suas próprias particularidades, um território marcado por locais que evocam processos de identidade locais. Apresentamos uma primeira abordagem dos espaços sociais que, com base nas perspectivas dos moradores da cidade, se comportam como elementos fundamentais e diacríticos da identidade lasteniense. Além disso, este trabalho integra resultados parciais de projetos de pesquisa realizados desde 2013 que, em termos gerais, promovem a revalorização de recursos culturais no leste de Tucumán numa ótica situada.; In the year 1966, on August 22nd, the Lastenia sugar mill (Tucumán, Argentina) shut its doors following the announcement of decree-law no. 16.926, driven by a self-proclaimed de facto government named the Argentine Revolution. With a profound history in the territory that currently encompasses the homonymous locality, this productive space shaped its social, economic, and cultural development. Although from an urban perspective the locality of Lastenia is conceived as just another component of the Greater San Miguel de Tucumán metropolitan area, it is actually a dynamic setting with its own particularities, a territory marked by sites that evoke local identity processes. We present a first approach to the social spaces that, from the perspectives of the town’s residents, behave as foundational and diacritical elements of the Lastenian identity. Additionally, this work integrates partial results from research projects conducted since 2013 that, in general terms, promote the revaluation of cultural resources in eastern Tucumán from a situated perspective

Impact of Germination Treatment and Quinoa Variety on the Physicochemical and Rheological Properties of Wheat Dough Guardianelli, Luciano Martin; Salinas, Maria Victoria; Puppo, Maria Cecilia The objective of this study was to analyze wheat dough blended with two varieties of quinoa flour (white-WQ, red-RQ),both germinated and non-germinated, to predict the technological behavior of the dough during the breadmaking process.Blends with wheat flour with quinoa flour: germinated (WQG or RQG) and ungerminated (WQ or RQ), at different levels(up to 25%) were formulated. Farinographic parameters and wet and dry gluten content were determined. Additionally,hydration (moisture, water activity, molecular mobility) and rheological (texture, relaxation) properties of the dough wereassessed. Fermentation parameters (maximum volume of fermented dough-DVmax and optimum fermentation time-tf) weredetermined. Dough properties were modified by the addition of quinoa: wheat dough with 25% quinoa flour resulted inlower gluten content and a less structured dough with high moisture. The elasticity and hardness of the dough were higherwith 25% germinated quinoa (WQG25 and RQG25). The adhesiveness of the dough depended on the variety and treatment,with RQG being more adhesive. Incorporating 25% quinoa flour of both varieties allowed a fast fermentation (shorter time)but with different kinetic. Although there were no differences between WQ25 and WQG25, RQG25 dough was more stablecompared to RQ25.Overall, satisfactory dough technological properties for baked goods production were observed for wheatdough containing up to 25% quinoa flour, independently if seeds were or were not previously germinated.

“La socioeducadora fue la primera persona que sentí que me acompañó”: Funciones subjetivantes del acompañamiento institucional en la biografía de un joven en contexto de precariedad; “A socioeducadora foi a primeira pessoa que senti que me acompanhou”: Funções subjetivantes do acompanhamento institucional na biografia de um jovem em contexto de precariedade; “The socio-educator was the first person I felt accompanied me”: The subjectification function of institutional support in the biography of a young person in a context of precarity Ghisiglieri, Francisco; Cardozo, Griselda Patricia; Grinberg, Silvia Mariela El artículo presenta reflexiones y articulaciones conceptuales acerca de las funciones subjetivantes que efectúan profesionales de instituciones sociales y educativas en el acompañamiento de jóvenes en contextos de precariedad. Se recuperan aportes teóricos del psicoanálisis, el ámbito educativo y la sociología para realizar una aproximación situada a la manera en que se entraman las presencias institucionales en el relato de vida de un joven de 18 años de edad. Los resultados resaltan la capacidad que tienen los vínculos institucionales de producir interrupciones en procesos desubjetivantes en curso y abrir a nuevos horizontes de vida, a partir de apuntalar la re-elaboración de experiencias traumáticas y la recomposición de un tejido sociosimbólico subjetivante.; O artigo apresenta reflexões e articulações conceituais sobre as funções subjetivantes realizadas por profissionais de instituições sociais e educativas no acompanhamento de jovens em contextos de precariedade. São recuperadas contribuições teóricas da psicanálise, da educação e da sociologia, para realizar uma abordagem situada sobre como as presenças institucionais se entrelaçam na narrativa de vida de um jovem de 18 anos. Os resultados destacam a capacidade dos vínculos institucionais de produzir interrupções em processos dessubjetivantes em curso e abrir novos horizontes de vida, ao apoiar a re-elaboração de experiências traumáticas e a recomposição de um tecido sociossimbólico subjetivante.; This paper presents conceptual reflections regarding the subjectification functions performed by professionals in social and educational institutions when supporting youth in contexts of precarity. Drawing on an interdisciplinary approach, it incorporates theoretical contributions from psychoanalysis, education, and sociology. The life story of an 18-year-old youth is analyzed, providing a situated approach to how institutional presences are interwoven into their biographical trajectory. The results highlight the capacity of institutional relationships to produce interruptions in processes of desubjectivation, opening up new horizons of life.

Ozone treatment of meat and meat products: a review Gimenez, Maria Belen; Zaritzky, Noemi Elisabet; Graiver, Natalia Gisel Ozone treatment is a non-thermal method for disinfection; ozone is apowerful oxidizing agent that has been shown to be effective in reducingmicrobial load, extending the shelf life of meat products. This mini-reviewcovers the analysis of the antimicrobial ozone activity in different meats (beef,poultry, pork, seafood, etc.), emphasizing the ozone application methods(liquid or gaseous phase), the applied concentrations and contact times andthe effects of ozone treatment onmeat quality, safety, and sensory properties.It has been demonstrated that ozone is effective against a broad range ofmicroorganisms, including both Gram-positive and Gram-negative bacteria,spores, and vegetative cells. The efficacy of ozone depends on various factors,such as concentration, type of treatment, temperature, and presence oforganic material. Ozone treatment, known for its rapid decomposition andlack of residue, provides an environmentally friendly alternative to traditionalchemical sanitizers. Ozone treatments exhibit promising results in enhancingthe safety and extending the shelf life of meat products. According to thefindings, the application of ozone is an effective technology for prolonging theshelf life of different types of meats and meat products, requiring carefulestablishment of conditions on a case-by-case basis.

Dynamics of changes in broiler spatial distribution induced by a robot with autonomous navigation along the growing cycle Marin, Raul Hector; Caliva, Jorge Martín; Kembro, Jackelyn Melissa Welfare problems in broiler chickens are associated with accelerated growth in high density and barren environments. Encouraging broiler movement yields benefits by increasing locomotion, foraging, and environmental exploration. Robot sensors with autonomous navigation capabilities developed to collect husbandry information could collaterally induce movement of birds while traversing the chicken houses. This study examines the short-time dynamic of changes in broiler spatial distribution within the robot's zone of influence throughout the growing cycle. Two batches of mixed-sex Cobb-500 were raised in a commercial broiler farm until 42 d of age, in 2 houses divided into 4 equally sized sectors. In half of the sectors an AviSense robot sustained 2-h per day of autonomous navigation. The minute prior and the 4 min following the robot entering the zone of influence were video recorded weekly. Control sectors without a robot were analyzed equivalently. Number of individuals within the zone of influence of the robot were obtained at 1-s intervals and relative density (%) was estimated. Physical interactions between broilers and the robot, as well as interactions with the environment were also recorded. The entrance of the robot triggers within seconds a strong depopulation of the zone with birds walking to neighboring areas (P < 0.03, in all ages). The decreases in relative density induced by the robot appears more pronounced, and repopulation of the zone was slower, in younger than in older birds (P < 0.05). Broilers´ showed physical interactions towards the robot and were also touched and/or slightly pushed by the robots (19 and 84% of videos recorded, respectively). They were also found scratching and/or pecking the ground after the robot passed (64% of videos). Findings strongly suggest that robots, beyond their specific capabilities as environmental sensors, were effective in promoting increased movement in broilers along the growing cycle and could also favor additional exploratory behaviors. Thus, these robots could be considered as environmental enrichment elements that contribute to welfare improvements during intensive rearing.

Puma concolor (Carnivora: Felidae) en áreas protegidas y no protegidas de la región de lomadas arenosas, en la provincia de Corrientes, Argentina; Puma concolor (Carnivora: Felidae) in protected and unprotected areas of the Lomadas Arenosas region, in the province of Corrientes, Argentina Romero, Verónica Lorena; Natalini, María Belén; Gomez, Carlos A.; Gomez, N. E.; Contreras, Félix Ignacio; Kowalewski, Miguel Martin Los grandes felinos son importantes para el mantenimiento del equilibrio ecológico, y son indicadores de biodiversidad y resiliencia de los ecosistemas. Los pumas (Puma concolor) son mamíferos terrestres con una amplia distribución en Argentina, y su estado de conservación es de Preocupación Menor. Este trabajo tuvo como objetivo reportar nuevos registros y generar posibles explicaciones sobre su presencia en la provincia de Corrientes, como así también explorar posibles impactos sobre su población. El área de estudio consistió en tres áreas protegidas y sus zonas de amortiguamiento, Parque Nacional Mburucuyá, Portal San Nicolás del Parque Nacional Iberá y Reserva Natural Provincial Rincón Santa María, ubicadas en la región de lomadas arenosas, y otras regiones de la provincia donde se produjeron nuevos registros de la especie. En las áreas protegidas se realizaron muestreos estratificados mediante técnicas de conteo directo e indirecto entre los años 2014 a 2020. Además, se realizaron entrevistas verbales no estructuradas en las zonas de amortiguamiento (años 2016 a 2020) y la búsqueda de información en fuentes periodísticas locales (años 2014 a 2020). Actualizamos la distribución y confirmamos la presencia del puma en nueve departamentos de Corrientes, con 20 detecciones comprendidas entre los años 2015 a 2020. El 57,1 % de los registros corresponden a individuos adultos. Con respecto a la ubicación espacial las detecciones se localizaron en pastizales, bosque nativo, forestales de exóticas, palmares de yatay o caranday próximos a bordes de cuerpos de agua, áreas con urbanización y actividades productivas (rurales, forestales). Esta información servirá como base para implementar programas de monitoreo y vigilancia, como así también iniciar futuros estudios sobre la percepción e interacción con las personas en Corrientes.; Large felines are important for maintaining ecological balance, and are indicators of biodiversity and ecosystem resilience. Cougars (Puma concolor) are terrestrial mammals with a wide distribution in Argentina, and their conservation status is Least Concern. This study aimed to report new records and generate possible explanations for its presence in the province of Corrientes, as well as explore possible impacts on its population. The study area was composed of three protected areas and their buffer zones, the Mburucuyá National Park, the San Nicolás Portal within the Iberá National Park and the Rincón Santa María Provincial Natural Reserve, located in the lomadas arenosas region, and other regions of the province with new records. In the protected areas, stratified sampling was carried out using direct and indirect counting techniques between the years 2014 to 2020. In addition, unstructured verbal interviews were carried out in the buffer zones (years 2016 to 2020) and information was searched in local newspaper sources (years 2014 to 2020). We actualized the distribution and confirmed the presence of the puma in nine departments of Corrientes, with 20 detections between the years 2015 to 2020. In the records, 57.1% correspond to adult puma individuals. Regarding spatial location, the detections were located in grasslands, native forest, exotic forests, yatay or caranday palm groves near the edges of bodies of water, areas with urbanization and productive activities (rural, forestry). This information will serve as a basis for implementing monitoring and surveillance programs, as well as initiating future studies on the perception and interaction with people from Corrientes.

Nephrosis in cattle associated with consumption of Ludwigia peploides (Onagraceae) Micheloud, Juan Francisco; Avellaneda Caceres, Agustin; Sandoval, Gabriela Virginia; Martínez, Olga G.; Riet Correa, Franklin This paper describes an outbreak of nephrosis in cattle associated with the consumption of Ludwigia peploides in Tucuman province, northwestern Argentina. Affected cows exhibited submandibular and chest edema, lethargy and ataxia, and eventually succumbed to these conditions. These animals were grazing in a floodable area severely invaded by this plant. The disease affected 7 out of a herd of 67 cows. Horses and goats grazing in the same location were not affected. The main gross and histological lesion corresponded to a severe nephrosis. The disease is similar to the poisoning by Ludwigia peruviana reported in Colombia.

Validación de precipitación estimada por CHIRPS en una región semiárida de Argentina; Validation of CHIRPS Estimated Precipitation in a Semi-Arid Region of Argentina Lambrecht, Yamila Belén; Montico, Anabella; Picone, Natasha Los datos grillados de precipitación son una herramienta valiosa en contextos de escasez de datos observacionales. Para su uso es fundamental la validación a través de análisis estadísticos. El objetivo del trabajo es validar la base de datos CHIRPS (Climate Hazards Group InfraRed Precipitation with Station Data, por sus siglas en inglés) para el suroeste de la provincia de Buenos Aires a lo largo del período 1990- 2020. Este conjunto de datos posee una adecuada cobertura espacio-temporal para estudiar la variabilidad de las precipitaciones dado que presenta cobertura diaria y continua desde 1980 hasta la actualidad con una resolución de 0,05° entre los 50°S y 50°N. Para la validación, se aplicaron el coeficiente de correlación de Pearson (rPearson), el error absoluto medio (mae), el error cuadrático medio (rmse) y el sesgo porcentual (pbias), en entorno R utilizando el paquete hydroGOF. CHIRPS presentó correlaciones de entre 0,68 y 0,84 respecto a los datos observados, tanto a escala mensual como anual. Asimismo, se observó una tendencia a sobreestimar las precipitaciones entre 2 y 4% a escala mensual, excepto en el sector noroeste, donde se subestimaron entre 4 y 11%. A escala anual la sobreestimación se situó entre 3 y 4% mientras que la subestimación presentó las mismas características que a escala mensual. El análisis de mae y rmse evidenció mayores errores en las estaciones próximas al cordón serrano en ambas escalas temporales. Se concluye que CHIRPS es aplicable para estudios de variabilidad de las precipitaciones en la región analizada, principalmente a escala anual, donde la falta de datos se presenta como un problema recurrente, teniendo en cuenta los errores espaciales detectados y las menores diferencias en las correlaciones entre estaciones de anclaje y fuentes independientes para estudios climáticos a esta escala.; Gridded data of precipitation are a valuable tool in scarce-observational data contexts. Validation through statistical analysis is essential for its use. This work aims to validate the Climate Hazards Infrared Precipitation with Stations (CHIRPS) database for the southwest of Buenos Aires province over the period 1990-2020. This dataset has adequate spatio-temporal coverage to study rainfall variability since it presents daily and continuous coverage from 1980 to the present with a resolution of 0.05° between 50°S and 50°N. For validation purposes, Pearson's correlation coefficient (r-Pearson), mean absolute error (mae), root mean squared error (rmse) and percent bias (pbias) were applied in the R environment using the hydroGOF package. CHIRPS shows a correlation between 0.68 and 0.84 for observed data on both monthly and annual scales. It also tends to overestimate rainfall between 2 and 4%on a monthly scale, except in the northwestern sector, where it was underestimated between 4 and 11%. At the annual scale, overestimation was between 3 and 4%, while underestimation presented the same characteristics as at the monthly scale. The analysis of mae and rmse showed greater errors in the stations near the mountain range at both time scales. It is concluded that CHIRPS is applicable for rainfall variability studies in the analyzed region, where the lack of data is a recurrent problem, considering the spatial errors detected.

Narrativas de jóvenes con discapacidad acerca de sus trayectorias educativas, a partir de sus experiencias en la educación superior; Narratives of young people with disabilities about their educational trajectories, based on their experiences in higher education; Narrativas de jovens com deficiência sobre suas trajetórias educacionais, a partir de suas experiências no ensino superior Pérez, Andrea Verónica El presente trabajo reflexiona a partir de algunas propuestas conceptuales que protagonizan los debates vinculados al campo de los estudios críticos y nuestramericanos en discapacidad (referidos a las narrativas, las trayectorias y las políticas públicas), junto con los resultados de una labor empírica desarrollada en una universidad argentina con apoyo de distintas instituciones. El objetivo general fue lograr una aproximación a los modos en que los y las jóvenes con discapacidad de la Argentina construyen y/o resignifican los sentidos tradicionales otorgados a las trayectorias educativas en el nivel superior (universitario y no universitario), a partir de la identificación de los aspectos que conciben como barreras, violencias, facilitadores, aprendizajes y experiencias. Todo esto se enmarca en las tradiciones que acompañan al sistema educativo de este país. En términos metodológicos, se trabajó con un enfoque hermenéutico-comprensivo a partir de conversaciones mantenidas entre 2020 y 2022 con quince jóvenes con discapacidad.; This paper reflects on some conceptual proposals that star in the debates related to the field of critical and nuestramericanos studies in disability (referring to narratives, trajectories and public policies), together with the results of an empirical work developed in an Argentine university with the support of different institutions. The general objective was to achieve an approximation to the ways in which young people with disabilities in Argentina construct and/or resignify the traditional meanings granted to educational trajectories at the higher level (university and non-university), based on the identification of aspects that they conceive as barriers, violence, facilitators, learning and experiences. All this is part of the traditions that accompany the educational system of this country. In methodological terms, we worked with a hermeneuticalcomprehensive approach based on conversations held between 2020 and 2022 with fifteen young people with disabilities.; Este artigo reflete sobre algumas propostas conceituais que protagonizam os debates relacionados ao campo dos estudos críticos e nuestramericanos em deficiência (referentes a narrativas, trajetórias e políticas públicas), juntamente com os resultados de um trabalho empírico desenvolvido em uma universidade argentina com o apoio de diferentes instituições. O objetivo geral foi alcançar uma aproximação às formas como os jovens com deficiência na Argentina constroem e/ou ressignificam os significados tradicionais concedidos às trajetórias educacionais de nível superior (universitário e não universitário), a partir da identificação de aspectos que concebem como barreiras, violência, facilitadores, aprendizagens e experiências. Tudo isto faz parte das tradições que acompanham o sistema educativo deste país. Em termos metodológicos, trabalhamos com uma abordagem hermenêuticoabrangente a partir de conversas realizadas entre 2020 e 2022 com quinze jovens com deficiência.

El Programa Nacional de Educación Solidaria durante la gestión ministerial de Daniel Filmus (Argentina, 2003-2007); O Programa Nacional de Educação Solidária durante a gestão ministerial de Daniel Filmus (Argentina, 2003-2007; The National Solidarity Education Program during the ministerial administration of Daniel Filmus (Argentina, 2003-2007) Amar, Hernán Mariano En este artículo, se analiza la política diseñada por el Programa Nacional de Educación Solidaria, bajo la presidencia de Néstor Kirchner. No sólo se examina su misión política y educativa, sino también la relación que promovió entre el Estado y la sociedad civil para el logro de sus objetivos, durante la gestión ministerial de Daniel Filmus. Para ello, se adoptó como estrategia metodológica el enfoque cualitativo y el análisis interpretativo de las publicaciones sobre aprendizaje-servicio, que fueron elaboradas por el Ministerio de Educación, Ciencia y Tecnología de la Nación entre 2003 y 2007. Esos materiales se indagaron desde el prisma y las categorías de una ciencia social histórica: esto es, como un conjunto de textos que condensaron la visión del Estado Nacional, en una coyuntura particular, sobre la problemática de la Educación Solidaria en el campo educativo argentino. Por último, entre otros hallazgos se sostiene que este programa nacional se propuso impulsar el trabajo articulado entre el Estado y la sociedad civil para contribuir con la Educación Solidaria a los objetivos de las llamadas políticas de “inclusión” con “calidad educativa”, que se fueron configurando durante el ministerio de Filmus con el fin de abordar los problemas educativos y sociales generados o agravados por las reformas neoliberales de los años noventa.; Este artigo analisa a política desenhada pelo Programa Nacional de Educação Solidária, sob a presidência de Néstor Kirchner. Não se examina apenas a sua missão política e educativa, mas também a relação que promoveu entre o Estado e a sociedade civil para atingir os seus objetivos, durante a administração ministerial de Daniel Filmus. Para tanto, adotou-se como estratégia metodológica a abordagem qualitativa e a análise interpretativa de publicações sobre aprendizagem-serviço elaboradas pelo Ministério da Educação, Ciência e Tecnologia da Nação entre 2003 e 2007. Esses materiais foram investigados a partir do prisma e as categorias de uma ciência social histórica: isto é, como um conjunto de textos que condensaram a visão do Estado Nacional, em uma situação particular, sobre o problema da Educação Solidária no campo educacional argentino. Por fim, entre outras constatações, argumenta-se que este programa nacional teve como objetivo promover um trabalho articulado entre o Estado e a sociedade civil para contribuir com a Educação Solidária para os objetivos das chamadas políticas de “inclusão” com “qualidade educativa”, que foram configurados durante o ministério Filmus para enfrentar os problemas educacionais e sociais gerados ou agravados pelas reformas neoliberais da década de 1990.; This article analyzes the policy designed by the National Solidarity Education Program under the presidency of Néstor Kirchner. Not only is its political and educational mission examined, but also the relationship that it promoted between the State and civil society to achieve its objectives during the ministerial administration of Daniel Filmus. To this end, the qualitative approach and interpretive analysis of service learning publications, prepared by the Ministry of Education, Science, and Technology of the Nation between 2003 and 2007, were adopted as a methodological strategy. These materials were investigated from the prism and the categories of historical and social science: that is, as a set of texts that condensed the vision of the National State in a particular situation on the problem of Solidarity Education in the Argentine educational field. Finally, among other findings, it is argued that this national program aimed to promote articulated work between the State and civil society to contribute with Solidarity Education to the objectives of the so-called “inclusion” policies with “educational quality,” which are They were configured during the Filmus ministry in order to address the educational and social problems generated or aggravated by the neoliberal reforms of the 1990s.

El centenario de Brasil: un homenaje musical escolar en Buenos Aires; The Brazilian Centenary: A School Musical Tribute in Buenos Aires García, Luisina Inés En septiembre de 1922, el Teatro Colón de Buenos Aires fue sede de un festival organizado por el Consejo Nacional de Educación para homenajear a Brasil en el centenario de su independencia. Fuentes de la época indican que el evento tuvo una concurrencia numerosa tanto fuera como dentro del escenario. Con una orquesta de noventa profesores, masas corales de setecientos niños y dos directores, se interpretaron las catorce obras que conformaron el programa del concierto. El repertorio incluyó piezas tanto sinfónicas como canciones populares, con composiciones de autores de Argentina, de Brasil y de la música de tradición escrita europea. También, los Himnos Nacionales de ambos países junto con un Himno de Homenaje al pueblo brasileño compuesto por el italiano Giovanni Serpentini. Entre el público se encontraron importantes personalidades de la vida política argentina y brasileña. El festival de homenaje fue un acontecimiento musical que permitió la confluencia de diferentes ámbitos ‒educativo, social, cultural y político‒ principalmente, a través de instituciones y entidades significativas, así como por la participación de músicos influyentes en la vida musical porteña.Este trabajo postula que la conmemoración de la efeméride brasileña en Argentina fue una acción simbólico-cultural que, al igual que otros acontecimientos cercanos en el tiempo, buscaron propiciar un clima de reciprocidad y cortesía internacional. Las relaciones culturales entre Argentina y Brasil, a comienzos del siglo XX, han sido objeto de estudio mayormente en la historia de las artes plásticas y la literatura, con algunos trabajos específicos desde la historia musical. Este escrito, por lo tanto, pretende ampliar el estudio del vínculo entre estos países limítrofes con el fin de sumar materiales a la historia de la confraternidad musical entre Argentina y sus países vecinos, en un contexto signado tanto por un profundo sentimiento nacionalista al interior como por una progresiva mirada latinoamericana.; In September 1922, a school music festival organized by the National Education Council of Argentina was staged at the Teatro Colón in Buenos Aires to celebrate the 100th anniversary of Brazil’s independence. With a documentary approach and the use of the historical-hermeneutical method, this paper argues that the commemoration of the Brazilian anniversary in Argentina was a cultural and symbolic action that, like other related events, sought to promote a climate of reciprocity and international courtesy, encouraged, in this case, by the government and its educational system and from a certain part of the Argentine music community, both related in a nationalist way of thinking and in a growing desire for Latin American fraternity.

Saberes matemáticos y territorio: acompañando procesos de articulación entre Inicial y Primaria; Conhecimento matemático e território: acompanhando processos de articulação entre o nível inicial e o ensino fundamental; Mathematical knowledge and territory: accompanying articulation processes between Kindergarten and Primary School Sandoval, Jorgelina; Fanaro, Maria de Los Angeles En este trabajo se comparte la sistematización de la experiencia desarrollada desde la cátedra de Matemática correspondiente al Profesorado en Educación Inicial de la Facultad de Ciencias Humanas de la Universidad Nacional del Centro de la Provincia de Buenos Aires. Esta fue la primera Práctica Socio-Educativa a partir de la aprobación del Reglamento de dichas prácticas en 2023 en este espacio curricular. Participaron estudiantes de primer y cuarto año de la carrera, realizando una propuesta de articulación en el área de Matemática entre un jardín de infantes y una escuela primaria en un barrio periférico de la ciudad de Tandil, identificado como Punto de Extensión Territorial de la Universidad. La práctica se desarrolló en 20 encuentros, comenzando con reuniones integradas por los equipos de gestión de las instituciones, las secretarías de Extensión de la Facultad y de la Universidad. En este escrito se comparte la descripción de las actividades matemáticas desarrolladas en las aulas de la escuela, en el jardín y en el espacio de cátedra. Se destaca la relevancia en esta experiencia de los aprendizajes de los y las estudiantes que a su vez fueron incorporando saberes propios de la Didáctica de la Matemática y su interacción con aquellos saberes de las aulas que constituyen sus futuros ámbitos de inserción laboral.; Este trabalho compartilha a sistematização da experiência desenvolvida a partir da Cátedra de Matemática correspondente ao curso de Educação Inicial da Faculdade de Ciências Humanas da Universidade Nacional do Centro da Província de Buenos Aires. Esta foi a primeira Prática Socioeducativa desde a aprovação do Regulamento para tais práticas em 2023 neste espaço curricular. Participaram alunos do primeiro e quarto anos da licenciatura, fazendo uma proposta de articulação na área de Matemática entre um jardim de infância e uma escola primária de um bairro periférico da cidade de Tandil, identificado como ponto de extensão territorial da universidade . A prática foi desenvolvida em 20 encontros, começando por reuniões formadas pelas equipes gestoras das instituições, pelas secretarias de extensão da faculdade e da universidade. Neste escrito é compartilhada a descrição das atividades matemáticas desenvolvidas nas salas de aula da escola, no jardim e no espaço de ensino. Destaca-se a relevância nesta experiência da aprendizagem dos e das estudantes, que por sua vez incorporaram conhecimentos específicos da Didática da Matemática e a sua interação com aqueles conhecimentos das salas de aula que constituem as suas futuras áreas de atuação.; This paper shares the systematization of the experience developed by the Mathematics Chair corresponding to the Teacher Training in Preschool Education of the Faculty of Human Sciences of the National University of the Center of the Province of Buenos Aires. This was the first Socio-Educational Practice since the approval of the Regulations of such practices in 2023 in this curricular space. Students from the first and fourth years of the course participated, carrying out a proposal for articulation in the area of Mathematics between a kindergarten and a primary school in a peripheral neighborhood of the city of Tandil, identified as a territorial extension point of the university. The practice was developed in 20 meetings, beginning with meetings made up of the management teams of the institutions, the extension secretariats of the faculty and the university. This paper shares the description of the mathematical activities developed in the school classrooms, the kindergarten and the teaching space. The relevance of this experience of the students´ learning is highlighted, who in turn incorporated the specific knowledge of the Mathematics Didactics and its interaction with that knowledge of the classrooms that constitute their future areas of employment.

Campo escolar y juventudes: un análisis sobre estrategias estudiantiles, recorridos institucionales, concepciones, y expectativas; Campus escola e juventude: uma análise das estratégias estudantis, percursos institucionais, concepções e expectativas; Campus school and youth: an analysis of student strategies, institutional paths, conceptions, and expectations Leivas, Marcela A partir de recuperar la concepción de Campo Escolar que propone el enfoque Estructural-Genético, cuyo mayor exponente es Pierre Bourdieu, este artículo explora las estrategias estudiantiles que despliegan jóvenes que asisten a escuelas secundarias de la ciudad de Tandil, provincia de Buenos Aires, Argentina con el fin de permanecer con éxito en el espacio escolar. Específicamente, a partir de la aplicación de una encuesta cualitativa a grupos de jóvenes que asisten al tercer y sexto año de tres escuelas secundarias diferenciadas (una urbana de gestión privada, una urbana de gestión estatal y una sub-urbana de gestión estatal) se analizan sus recorridos institucionales previos, sus concepciones sobre educación, sus prácticas, sus aprendizajes, sus cuestionamientos, sus relaciones con otros jóvenes y con adultos, y sus expectativas de futuro. Dicho análisis se realiza en dos sentidos, uno que compara las respuestas de cada grupo de jóvenes, y otro que específicamente analiza las respuestas de cada grupo. Para, finalmente establecer una serie de hallazgos que permiten dar cuenta de la red de relaciones que subyace al vínculo que entabla cada grupo de estudiantes con sus escuelas de referencia, y que da cuenta de las distancias y/o cercanías que caracterizan que tienen entre sí, estableciendo algunas configuraciones propias del Campo Escolar de la ciudad.; A partir da recuperação da concepção de Campo Escolar proposta pelo enfoque Genético-Estrutural, cujo maior expoente é Pierre Bourdieu, este artigo explora as estratégias estudantis de jovens que frequentam escolas secundárias na cidade de Tandil, província de Buenos Aires, Argentina, de forma a permanecer com sucesso no espaço escolar. Especificamente, a partir da aplicação de um inquérito qualitativo a grupos de jovens que frequentam o terceiro e sexto ano de três escolas secundárias diferenciadas (uma privada urbana, uma pública urbana e uma estatal suburbana) são analisados os seus percursos institucionais anteriores, as suas concepções de educação, as suas práticas, as suas aprendizagens, as suas questões, as suas relações com os outros jovens e com os adultos e as suas expectativas para o futuro. Esta análise é realizada de duas formas, uma que compara as respostas de cada grupo de jovens, e outra que analisa especificamente as respostas de cada grupo. Para, finalmente, estabelecer um conjunto de constatações que nos permitem dar conta da rede de relações que está na base da ligação que cada grupo de alunos estabelece com as suas escolas de referência, e que dá conta das distâncias e/ou aproximações que os caracterizam entre si, outro estabelecendo algumas configurações típicas do Campo Escolar da cidade.; Starting from recovering the conception of the School Field proposed by the Structural-Genetic approach, whose greatest exponent is Pierre Bourdieu, this article explores the student strategies deployed by young people who attend secondary schools in the city of Tandil, province of Buenos Aires, Argentina, in order to successfully remain in the school space. Specifically, from the application of a qualitative survey to groups of young people who attend the third and sixth year of three differentiated secondary schools (one privately run urban, one state-run urban and one state-run suburban) are analyzed their previous institutional journeys, their conceptions of education, their practices, their learning, their questions, their relationships with other young people and with adults, and their expectations for the future. Said analysis is carried out in two ways, one that compares the responses of each group of young people, and another that specifically analyzes the responses of each group. To finally establish a series of findings that allow us to account for the network of relationships that underlies the link that each group of students establishes with their schools of reference, and that accounts for the distances and/or closeness that characterize that they have with each other, establishing some typical configurations of the School Field of the city.

Interaction of fluralaner with binary model membranes: Potential implications in the selectivity for invertebrates/vertebrates Asis Rodriguez, Marcos Alberto; Felsztyna, Iván; Garcia, Daniel Asmed; Sánchez, Mariela Eugenia; Miguel, Virginia GABAA receptors (GABAA-R) are the target of widely used gabaergic insecticides such as fluralaner, a second generation non-competitive antagonist. Fluralaner blocks GABAA-R, binding to a pocket in the transmembrane subunit interface. Because of the location of its binding pocket, it is expected that fluralaner accesses to the receptor by previously partitioning into the bilayer. Therefore, differences in lipid composition of insect and mammal cells become relevant to determine the impact of membrane composition on the nonspecific selectivity of gabaergic insecticides. Insect cells show minimal concentration of cholesterol and they modulate membrane fluidity by regulating PE:PC ratios. On the other hand, vertebrate cholesterol concentration can be as high as 50%, depending on the type of cell. We used experimental Langmuir monolayer and Molecular Dynamics Simulations (MDS) to characterize the effect and interactions of the insecticide fluralaner with model membranes with varying concentrations of POPC:POPE and POPC:CHOL. Monolayer experiments showed that this insecticide reduces film rigidity. MDS showed that fluralaner is located at the interface between the acyl chain and the polar region of the membrane, but this location shifts at high CHOL concentrations towards the phosphate region. This is accompanied by a shift in the orientation of the fluralaner backbone, affecting fluralaner solubility. The presence of CHOL favors fluralaner aggregation, while POPE has the opposite effect, allowing its solubilization and the presence of individual insecticide molecules homogeneously dispersed. Our work suggests that differences in membrane composition could unspecifically influence the selectivity of gabaergic insecticides, modulating fluralaner solubility and fluralaner's access to GABAA-R.

Understanding the solid-state calcium metavanadate synthesis pathway Nassini, Daniela; Fouga, Gastón Galo; Alvarez, Fabiola Julieta; de Micco, Georgina; Bohe, Ana Ester The calcium metavanadate (CaV2O6) synthesis was studied by a conventional solid-state reaction in a CaCO3 - V2O5 mixture (1:1) molecular ratio in air. The synthesis began at 400 ºC and at temperatures above 620 ºC speeds up due to formation of a eutectic compound. After one hour at 650 ºC complete synthesis of the metavanadate is achieved. The crystal phase and the particle morphologies of the CaV2O6 were analyzed by Powder X-ray Diffraction (PXRD), Energy Dispersive Spectroscopy (EDS) and Scanning Electron Microscopy (SEM). A single phase and rounded particles with smooth faces were found. The combination of several experiments allowed the determination of the synthesis pathway, which occurred from CaCO3 and not from CaO. If the starting calcium compound is the oxide, the first step could be carbonation process with the atmospheric CO2.