An in silico analysis revealed a novel evolutionary lineage of putative mitoviruses Jacquat, Andrés Gustavo; Ulla, Sofía Belén; Debat, Humberto Julio; Muñoz Adalia, Emigdio Jordán; Theumer, Martín Gustavo; Garcia Pedrajas, Maria Dolores; Dambolena, José Sebastián Mitoviruses (family Mitoviridae) are small capsid-less RNA viruses that replicate in the mitochondria of fungi and plants. However, to date, the only authentic animal mitovirus infecting an insect was identified as Lutzomyia longipalpis mitovirus 1 (LulMV1). Public databases of transcriptomic studies from several animals may be a good source for identifying the often missed mitoviruses. Consequently, a search of mitovirus-like transcripts at the NCBI transcriptome shotgun assembly (TSA) library, and a search for the mitoviruses previously recorded at the NCBI non-redundant (nr) protein sequences library, were performed in order to identify new mitovirus-like sequences associated with animals. In total, 10 new putative mitoviruses were identified in the TSA database and 8 putative mitoviruses in the nr protein database. To our knowledge, these results represent the first evidence of putative mitoviruses associated with poriferan, cnidarians, echinoderms, crustaceans, myriapods and arachnids. According to different phylogenetic inferences using the maximum likelihood method, these 18 putative mitoviruses form a robust monophyletic lineage with LulMV1, the only known animal-infecting mitovirus. These findings based on in silico procedures provide strong evidence for the existence of a clade of putative mitoviruses associated with animals, which has been provisionally named ‘kvinmitovirus’.

Critical insights from alloys and composites of Ni-based electrocatalysts for HER on NaCl electrolyte Ysea, Nadia Belén; Benavente Llorente, Victoria; Loiácono, Antonella; Lagucik Marquez, Lucrecia; Diaz, Liliana; Lacconi, Gabriela Ines; Franceschini, Esteban Andrés It is critical to minimize the cost of materials and inputs used in hydrogen production and to create solutions for large-scale generation to reduce the cost of hydrogen produced. Seawater is a natural low-cost electrolyte with high Na+ and Cl- concentrations, among other soluble salts. Chloride ions allow a highly corrosive media to the materials typically used as electrodes. In this work, we have prepared and tested different Ni-based catalysts for hydrogen evolution in NaCl-containing solutions. NiMo alloy, Ni(WO3), and Ni(Nb2O5) composites are compared and studied from a critical point of view to find a viable solution for catalysis in seawater electrolysis. The NiMo catalyst presents a higher dissolution rate in the NaCl medium than all synthesized catalysts. Furthermore, Ni-based composites showed improved durability due to a decrease in dissolution, and an increase in catalytic activity when using Nb2O5 as the dispersed phase. The Ni(Nb2O5) electrodes presented the higher catalytic activity in NaCl solution, even higher than that found in NiMo catalyst.

Characterization of autochthonous lactobacilli from goat dairy products with probiotic potential for metabolic diseases Márquez, María Antonela; Andrada, Lidia Estefania; Russo, Matias Irineo; Bolondi, María Luján; Fabersani Marrades, Mario Emanuel; Medina, Roxana Beatriz; Gauffin Cano, María Paola The present study aimed to design functional fermented goat milk with probiotic potential for metabolic diseases. Thereby, autochthonous lactobacilli from goat dairy products that target improving the inflammatory, lipid, and glycemic profile were characterized. We designed fermented goat milk using Lactobacillus delbrueckii subsp. indicus CRL1447 as starter strain, supplemented with different probiotic consortia formed by Limosilactobacillus fermentum CRL1446, Lactiplantibacillus paraplantarum CRL1449, and CRL1472 strains. These lactobacilli were selected for their positive effects on inhibition of α-glucosidase, bile salts hydrolase activity, cholesterol assimilation, and decreased triglyceride percentage in Caenorhabditis elegans. Furthermore, the lactobacilli oral administration to obese mice caused a significant decrease in body weight gain and ameliorated hyperglycemia and hyperlipemia. These results reveal the potential of this goat dairy product as a functional food to prevent obesity and related pathologies. Goat milk-derived products stand out for their marketing potential. Hence, fermented goat milk incorporating novel probiotics represents a group of food products with broad prospects by their promising nutritive and therapeutic properties for metabolic diseases. The goat dairy product designed in this study could be used in the prevention of dyslipidemia and hyperglycemia in obese people.

Segmentation and densification of the residential fragmentation process in the City of Córdoba, Argentina (1991-2010); Segmentación y densificación del proceso de fragmentación residencial en la Ciudad de Córdoba, Argentina (1991-2010) Lemma, Martín Hernán A partir del análisis de las estrategias de localización, segmentación y densificación de los barrios cerrados en la Ciudad de Córdoba entre 1991 y 2010, este artículo estudia la evolución del proceso de fragmentación urbana y residencial de la ciudad en el marco de la globalización. Durante estas dos décadas, se verifica el avance de los barrios cerrados como espacio para el hábitat de los grupos pertenecientes a la cúpula socioeconómica cordobesa. Más aún, se diversifica el mercado residencial y aumenta la densidad bruta de las cuatro tipologías de barrios cerrados construidas.; Based on the analysis of the strategies of location, segmentation and densifi-cation of gated communities in the City of Córdoba between 1991 and 2010, this article studies the evolution of the urban and residential fragmentation process of the city in the framework of globalization. During these two decades, it is possible to verify the advance of gated communities as a space for the habitat of Cordoba’s leading socioeconomic groups. Results show that the residential market has diversified and the gross density of the four types of gated communities has increased.

Penalized robust estimators in sparse logistic regression Bianco, Ana Maria; Boente Boente, Graciela Lina; Chebi, Gonzalo Sparse covariates are frequent in classification and regression problems where the task of variable selection is usually of interest. As it is well known, sparse statistical models correspond to situations where there are only a small number of nonzero parameters, and for that reason, they are much easier to interpret than dense ones. In this paper, we focus on the logistic regression model and our aim is to address robust and penalized estimation for the regression parameter. We introduce a family of penalized weighted M-type estimators for the logistic regression parameter that are stable against atypical data. We explore different penalization functions including the so-called Sign penalty. We provide a careful analysis of the estimators convergence rates as well as their variable selection capability and asymptotic distribution for fixed and random penalties. A robust cross-validation criterion is also proposed. Through a numerical study, we compare the finite sample performance of the classical and robust penalized estimators, under different contamination scenarios. The analysis of real datasets enables to investigate the stability of the penalized estimators in the presence of outliers.

La enfermería durante la emergencia sanitaria del COVID-19 en Mendoza: nuevas estrategias en los procesos de formación (2020-2021); Nursing during the COVID-19 health emergency in Mendoza: new strategies in training processes (2020-2021) Hirschegger, Ivana Las Medidas de Aislamiento Social, Preventivo y Obligatorio (ASPO) producto dela pandemia por el Covid-19, incidieron en los procesos de enseñanza de todos lasáreas y niveles educativos. En el sector de la salud esto representó un reto para lacontinuidad de formación de los estudiantes de enfermería en general y de los futurosegresados necesarios para cubrir las crecientes demandas sanitarias. El presentetrabajo persigue analizar cómo incidió la pandemia del Covid-19 en los procesos deformación en enfermería de la provincia de Mendoza, atendiendo al nuevo marconormativo a partir del cual se implementaron nuevas estrategias de aprendizaje, comoasí también a la experiencia real dentro de las instituciones educativas. Entre lasfuentes consultadas se encuentran periódicos locales, leyes, decretos, resoluciones ydocumentos oficiales. También se acudió a fuentes orales como fueron las entrevistasa informantes claves del área educativa.; The Social, Preventive and Mandatory Isolation Measures (ASPO) as a result of the Covid-19 pandemic, affected the teaching processes of all areas and educational levels. In the health sector, this represented a challenge for the continuity of training for nursing students in general and future graduates needed to cover the growing health demands. The present work aims to observe how the Covid-19 pandemic affected nursing training processes in the province of Mendoza, taking into account the new regulatory framework from which new learning strategies were implemented, as well as the real experience within of educational institutions. Among the sources consulted are local newspapers, laws, decrees, resolutions and official documents. Oral sources were also used, such as interviews with key informants in the educational area.

Teoría crítica desde la periferia: entrevista a Eduardo Grüner; Critical theory from the periphery: An interview with Eduardo Grüner Moreno, María Rita; Aguirre Aguirre, Carlos Sergio Manuel La siguiente entrevista a Eduardo Grüner se produjo en septiembre de 2019. La misma tuvo lugar en las instalaciones del Centro Científico Tecnológico Mendoza Conicet, Argentina, en ocasión del Curso de Alta Formación El arte como pensamiento crítico, dictado por el mismo Grüner y organizado por el Instituto de Ciencias Humanas, Sociales y Ambientales (Incihusa). En la entrevista se transitan diversos aspectos del pensamiento de Grüner y se procura exponer la singularidad de sus aportes a una teoría crítica gestada desde la periferia.; This interview with Eduardo Grüner took place in September 2019. It was held at the premises of the Technological Scientific Center of Mendoza Conicet, Argentina, on the occasion of the Expert Training Course “Art as Critical Thinking” (El arte como pensamiento crítico), given by Grüner himself and hosted by the Institute of Human, Social, and Environmental Sciences (Instituto de Ciencias Humanas, Sociales y Ambientales —Incihusa). In this interview, we cover several aspects of Grüner thinking and attempt to expose the singularity of his contributions to a critical theory grown at the periphery.

Etnografías multifacéticas: un análisis socio antropológico sobre pedagogías maternas en Córdoba (Argentina) Blázquez, Macarena En el presente artículo pretendo describir diferentes apuestas metodológicas implementadas para la realización de mi Tesis Doctoral en Ciencias Sociales (2019-2022). Para ello, presentaré cuatro trabajos etnográficos: 1. Una etnografía de documentos efectuada en la biblioteca de la Facultad de Ciencias Médicas (Universidad Nacional de Córdoba-Argentina) 2. Una etnografía virtual realizada en la carrera de “Puericultura y crianza” conocida como PRIMAL 3. Una etnografía “clásica” en un Hospital Neonatal de administración gubernamental de la localidad cordobesa y 4. Una etnografía de redes sociales, que indaga perfiles de Instagram de “mamis influencers”. El objetivo de explicar la trama de etnografías multifacéticas construida, y los diálogos que entre ellas puedo entablar, me posibilita reflexionar sobre la producción de pedagogías maternas (Darré, 2013) en la localidad de Córdoba (Argentina).; : In this article I intend to describe different methodological approaches implemented for the realization of my Doctoral Thesis in Social Sciences (2019-2022). For this purpose, I will present four ethnographic works: 1. A document ethnography carried out in the library of the Faculty of Medical Sciences (UNC) 2. A virtual ethnography carried out in the "Puericulture and parenting" career known as PRIMAL 3. A "classic" ethnography in a government-run Neonatal Hospital in the Cordoba locality and 4. An ethnography of social networks, investigating Instagram profiles of "mommy influencers". The objective of narrating multifaceted ethnographies, and the dialogues that I can establish between them, will enable me to reflect on the production of maternal pedagogies in the Cordoba locality.

Factors affecting local plant knowledge in isolated communities from Patagonian steppe: Metacommunity theory is revealed as a methodological approach Rosa Santoro, Flávia; Richeri, Marina; Ladio, Ana Haydee The Patagonian steppe is a refuge for several indigenous peoples who live in relatively isolated communities, depending heavily on natural resources for their activities, health, and food security. The local ecological knowledge is a reservoir that generates full wellbeing and for which it must be the object of protection and local development. In this study, we aimed to find which factors can influence local ecological knowledge from a metacommunity on the Patagonian steppe. We analyzed variation in knowledge about cultivated and gathered plants used as medicinal, edible, and firewood according to multiple factors widely discussed in the ethnobiological literature: age, gender, formal education, occupation, indigenous identity, contact with urban centers, use of biomedicine, hunting, and handcrafted textile production. We conducted semi-structured interviews with local experts, accessed by the snowball technique. We found that formal education is a key factor in the variation of local ecological knowledge among people. In addition, we found that knowledge varies between people who practice activities inside and outside the home, concentrating knowledge between cultivated and gathered plants, respectively. Our urbanization proxies did not point to an influence of this factor on local knowledge, but specialists living in a larger community with signs of internal urbanization processes had much less knowledge. Our results allowed us to visualize the importance of studying metacommunities as a whole, to verify complexities and intersections of overlapping factors. Studies in metacommunities open up a range of possibilities for ethnobiological analysis.

El proyecto PIDAE “Universidad y entorno barrial. Efectos, interacciones y reciprocidades: La Facultad de Ciencias Sociales en el barrio de Constitución”; The PIDAE project “University and neighborhood environment. effects, interactions and reciprocities: the Faculty of Social Sciences in the neighborhood of Constitución” Rodriguez, Maria Carla; Di Virgilio, Maria Mercedes Aquí se presentan resultados de un proyecto financiado en el marco del Programa de Investigación y Desarrollo en Áreas Estratégicas con impacto Social de la Secretaría de Ciencia y Técnica de la Universidad de Buenos Aires, que indagó la inserción de la Facultad de Ciencias Sociales en las dinámicas socio urbanas de su entorno barrial. A través de una encuesta representativa con población residente, un mapeo exhaustivo de organizaciones y efectores de políticas públicas con acción territorializada en el barrio y un cuestionario dirigido a la población estudiantil de la FSOC, se elaboró un diagnóstico integrado que incluye tres componentes: i) tendencias actuales de reconfiguración barrial -heterogeneidades internas y externas respecto de los barrios colindantes y otros-, ii) características de los grupos sociales que lo habitan y iii) percepciones de residentes, instituciones y estudiantes sobre las problemáticas barriales percibidas de nuestra Facultad, identificando posibles puntos de entrada para una mayor institucionalización de su actuación barrial, desde una perspectiva de inclusión social y fortalecimiento de lo público.; This review presents the results of a project funded within the framework of the Research and Development Program in Strategic Areas with Social Impact of the Secretariat of Science and Technology of the University of Buenos Aires. This research examined the insertion of the Faculty of Social Sciences (FSOC) in the socio-urban dynamics of its neighborhood environment. Through a representative survey applied to the resident population, an exhaustive mapping of organizations and effectors of public policies with territorialized action in the neighborhood, and a questionnaire addressed to the student population of the FSOC, an integrated diagnosis was elaborated, which included three main components: i) current trends of neighborhood reconfiguration –internal and external heterogeneities regarding the adjacent neighborhoods and others; ii) the principal characteristics of the inhabitants, and iii) perceptions of residents, institutions and students about the perceived neighborhood problems and the FSOC, identifying possible entrances for greater institutionalization of its neighborhood action, from a perspective of social inclusion and strengthening of public sense.

Cuestionario de reserva cognitiva: Análisis psicométrico desde la teoría de respuesta al ítem; Cognitive Reserve Questionnaire: Psychometric analysis from the item response theory Martino, Pablo Luis; Caycho Rodríguez, Tomás; Valencia, Pablo D.; Politis, Daniel Gustavo; Gallegos, Miguel; de Bortoli, Miguel Angel; Cervigni, Mauricio Alejandro Introducción. La reserva cognitiva es la capacidad para tolerar mejor el daño cerebral mediante recursos cognitivos preexistentesy compensatorios. Un método de evaluación es el cuestionario de reserva cognitiva (CRC) de Rami. El objetivofue realizar un análisis de la calidad informativa del CRC desde la teoría de respuesta al ítem (TRI), con el fin de aportardatos más precisos sobre la fiabilidad de consistencia interna. Se probó, además, la validez convergente con medidas deatención, memoria de trabajo y fluidez.Sujetos y métodos. Participaron 210 argentinos de población general (media edad, 66,8 años). El CRC se administró juntocon el test de dígitos y tres tareas de fluidez. Se ajustó un modelo de respuesta graduada desde la TRI con estimaciónde parámetros de discriminación (a) y dificultad (b), y se elaboró una curva de información del CRC. Se efectuaron correlacionesbivariadas y parciales.Resultados. La TRI indicó una alta discriminación para los ítems del CRC ‘Escolaridad’ y ‘Nivel de ocupación’ (tanto para laversión de ocho ítems como para la versión de seis ítems). En el CRC de ocho ítems se obtuvo una baja discriminación para‘Formación musical’ y ‘Juegos intelectuales’. En ambas versiones del CRC, la curva indica mayor valor informacional abajo nivel del constructo. Hubo correlación con el test de dígitos y con las tareas de fluidez, incluso al controlar por edad.Conclusiones. El presente estudio es el primer análisis del CRC desde la TRI, que concluye que el instrumento resulta másconfiable cuando se aplica a sujetos con menor reserva. El CRC posee aceptable validez convergente.; Introduction. Cognitive reserve is the ability to better tolerate brain damage through pre-existing and compensatory cognitive resources. One assessment method is the Rami CRQ-Cognitive Reserve Questionnaire. The objective was to carry out an analysis of the informative quality of the CRQ from the item response theory (IRT), in order to provide more precise data on the reliability of internal consistency. Convergent validity was also tested with measures of attention, working memory, and fluency. Subjects and methods. 210 Argentines from the general population (mean age, 66.8 years) participated. The CRQ was administered together with the digits test and three fluency tasks. A graded response model was fitted from IRT with estimation of discrimination parameters (a) and difficulty (b), and a CRQ information curve was created. Bivariate and partial correlations were made. Results. The IRT indicated high discrimination for the CRQ items 'Education' and 'Occupation level' (both for the 8-item version and the 6-item version). In the CRQ of 8 items, low discrimination was obtained for 'Musical training' and 'Intellectual games'. In both versions of the CRQ, the curve indicates greater informational value at a low level of the construct. There was a correlation with the digits test and with fluency tasks, even when controlling for age. Conclusions. This study is the first analysis of CRQ from IRT, concluding that the instrument is more reliable when applied to subjects with less reserve. The CRQ has acceptable convergent validity.

Hacer la verdad del mundo: El universo y el símbolo en El sacrificio de Tarkovski; Per la veritat del món: L'univers i el símbol en "El sacrifici" de Tarkovski; Make the truth of the world:The universe and the symbol in The Sacrifice of Tarkovsky Dipaola, Esteban Marcos El artículo propone pensar la dimensión de la verdad, el sacrificio y el milagro, atendiendo a su dimensión ontológica, es decir, la definición de la experiencia de mundo-verdadero. Comprende un análisis de la obra cinematográfica de Andréi Tarkovski El sacrificio, tomando como marco de referencias teóricas la hermenéutica de Hans-Georg Gadamer. Considerando la operación de la verdad en la palabra y los enfoques relativos a la experiencia estética como ejercicio de justificación de lo verdadero en el arte, observa-dos en la obra del filósofo, en este artículo se interrogan planos superpuestos de la película del cineasta para interpretar puntos de vista acerca de lo verdadero en las imágenes.; L’article proposa pensar la dimensió de la veritat, el sacrifici i el miracle, atenent la seva dimensió ontològica, és a dir, la definició de l’experiència del món veritable. Comprèn una anàlisi de l’obra cinematogràfica d’Andrei Tarkovski El sacrifici, prenent com a marc de referències teòriques l’hermenèutica de Hans-Georg Gadamer. Considerant l’operació de la veritat en la paraula i els enfocaments relatius a l’experiència estètica com a exercici de justificació del que és veritable en l’art, observats en l’obra del filòsof, en aquest article s’interroguen plànols superposats de la pel·lícula del cineasta per interpretar punts de vista sobre el que és veritable en les imatges.; : This article considers the dimension of truth, sacrifice and miracle, taking into account the ontological dimension, that is, the definition of the experience of the true world. It includes an analysis of Andrei Tarkovsky’s film The Sacrifice, taking Hans-Georg Gadamer’s hermeneutics as a framework of theoretical reference. Considering the function of truth in words and approaches related to the aesthetic experience as an exercise of justification of what is true in art, observed in the work of the philosopher, superimposed shots from the filmmaker’s work are examined to interpret points of view about the truth in these images.

A dynamic analysis of wine pricing in Argentina Larrosa, Juan Manuel Ceferino; Gutierrez, Emiliano Martin; Ramírez Muñoz de Toro, Gonzalo Román; Uriarte, Juan Ignacio Purpose: The purpose of the study is to investigate micro determinants for dynamic wine pricing in Argentina. We test whether attributes and time affect the price rate of change. The rate of change is selected given the inflationary context of the country. The analysis provides valuable information for wine marketing decisions. Design/methodology/approach: The modeling approach relies on panel data analysis for exploiting the data cross-section and time dimension. The contribution explores a massive price dataset at a weekly frequency. The dependent variable is the weekly price variation rate for product/wine and covariates are attributes, time and nominal variables. Given that endogeneity issues arose, the estimations rely on a two-stage least squares and instrumental variables with cluster-robust errors. Findings: Estimations show that attributes, time and cost variables are statistically significant, with clear seasonal patterns and quality segmentation affecting pricing: wines made out of specific grapes such as Chenin, Merlot and Seedling or composing a broad category such as red wine, exhibit price undershooting (price rate of change below average). On the other hand, wines out of grapes such as Bonarda, Margaux, Mistela, Moscatel, Oporto, Tannat and Sauvignon Blanc show price overshooting (rate of change above average). In summary, wine made from determined grapes and specific wineries show divergent pricing. Research limitations/implications: Covariates such as alcohol content, label descriptor information, winery history, substitute competition and vintage, among others, have not been considered given that the research analyzes more than 750 wine products. Another limitation is that the work does not explore many time-series covariates, such as promotions and idiosyncratic shocks. Practical implications: The contribution presents new information on wine pricing patterns affected by weeks, months and years, including the effect of the prolonged 2020 Argentine lockdown. It also analyzes estimations on pricing at the level of grape/blend and wineries previously unknown in this market. The information can influence inventory decisions on the side of the sellers and purchase decisions on the side of consumers. Social implications: The analysis includes fine but also low-cost wines that form part of the diet of low-income families in the country. The work detects a divergent pattern in pricing divided by the quality/price of the wine. It also presents information on price timing that may help consumers in the best moment to buy. Originality/value: The contribution analyzes unprecedented information on weekly wine prices and presents evidence of pricing tactics from a point-of-sale perspective: It identifies different adjustment speeds related to product features and time effects.

Del ímpetu revolucionario a la defensa de los derechos humanos: Trayectorias militantes entre Europa y el Cono Sur durante la Guerra Fría (1966-1990) Cristiá, Moira Inés; Camacho Padilla, Fernando En este artículo se estudia, a través de una serie de trayectorias, el pasaje de una amplia radicalización política en Europa y América Latina de mediados de los años sesenta a la defensa de los derechos humanos en los ochenta. Presentamos una reflexión sobre este fenómeno de jóvenes que cruzaron el Océano Atlántico en ambas direcciones desde la perspectiva de la historia conectada, con el objetivo de identificar cuáles fueron las motivaciones, las causas y el desarrollo de los valores e ideales por los que se guiaron. Se argumenta que, contrariamente a la tendencia mayoritaria, algunos latinoamericanos se politizaron en Europa antes de trasladarse al Cono Sur para colaborar con el proceso revolucionario que parecía estar en curso, mientras que diversos europeos se radicalizaron del otro lado del Atlántico. Ambos grupos debieron luego refugiarse en Europa para escapar de la represión. Con el devenir de los años, sus percepciones se transformaron, llegando incluso a distanciarse de sus posicionamientos de juventud. El artículo postula que este proceso de radicalización y reconversión militante no fue exclusivo de los actores latinoamericanos, sino que fue producto de los vaivenes del clima global en tiempos de Guerra Fría, así como de los propios procesos subjetivos de reflexión ideológica sufridos con el transcurso de los años.; This paper studies, through a series of trajectories, the passage from a broad political radicalization in Europe and Latin America in the middle of the 1960s to the defense of human rights in the 1980s. We reflect on this phenomenon of young people who crossed the Atlantic Ocean in both directions from the perspective of connected history, in order to discover which were the motivations, reasons and evolution of the values and ideas which guided them. Our hypothesis is that contrary to the major tendency of the cases, some Latin Americans became politicized in Europe before moving to the Southern Cone to collaborate with the revolutionary process that seemed underway, while various Europeans radicalized on the other side of the ocean. Later, both groups sought refuge in Europe escaping from repression. When years passed, the subjective perceptions changed and several of these militants distanced themselves from their youth postulates. This article argues that this process of militant radicalization and reconversion was not exclusive to Latin American actors or scenarios, but rather was the product of the transformation of the global political climate during the Cold War but also by the ideological reflection in a personal level which came after time.

Environment affects starch composition and kernel hardness in temperate maize Martínez, Roberto Dionisio; Cirilo, Alfredo Gabriel; Cerrudo, Anibal Alejandro; Andrade, Fernando Héctor; Izquierdo, Natalia Gabriela BACKGROUND: Protein percentage and kernel weight affect the endosperm hardness of maize grains. However, changes in starch composition could also modify kernel hardness, which is often predicted through milling ratio. The objective of this work was to evaluate the relationship between changes in starch composition and endosperm hardness, and to assess the effects of protein content and kernel weight on that relationship. For this, we used information obtained from three temperate hybrids in multi-environmental experiments, as well as experiments conducted under controlled conditions designed to modify starch composition. Milling ratio was determined as maize kernel hardness predictor in both experiments and it was correlated with grain weight and grain composition. RESULTS: In both experiments, milling ratio presented a significant Spearman correlation coefficient with amylose/starch ratio. Milling ratio was significantly related to the amylose/starch ratio using a simple fit with datasets from different experiments and hybrids. Increases in amylose/starch ratio were associated with increases in milling ratio. CONCLUSION: Starch composition was related to milling ratio variations among hybrids of different aptitude for dry milling through different environments, regardless of protein content. Thus, increases in the amylose/starch ratio were related to increases in the milling ratio.

Is the flight and foraging activity of small-size stingless bee affected by the urban heat island? The case of Plebeia catamarcensis (Meliponini) in Cordoba city (Argentina) Zeballos, Manuel; Calviño, Ana Alejandra; Zamudio, Fernando Urban heat island (UHI) effect is considered one of the major drivers of changes in insect behavior within cities. Here, we evaluated the flight and the nectar and pollen foraging activities of the southernmost stingless bee, Plebeia catamarcensis, along a land surface tem-perature gradient in central and peri-urban areas of the city of Cordoba (Argentina), as aproxy for the UHI effect. Flight and foraging activity were recorded in ten colonies locatedalong the temperature gradient in summer. We registered the bees activity in three time-bands (morning, midday and afternoon) through video recording. The temperature gradientwas obtained from Landsat 8 data in a buffer around each nest. Our results showed thatoverall flight activity as well as nectar foraging significantly increased with temperature.Pollen foraging, however, was significantly explained by time-bands with the highest activity concentrated in the morning, and independently of the temperature gradient. In addition, nectar and pollen foraging patterns were negatively associated. Whereas P. catamarcensis would take advantage of higher urban temperatures to forage nectar, the pollen foragingstrategy may hide an avoidance competition behavior sustained by the limited pollen availability compared with that of nectar. As a first attempt to address the UHI effect on a stingless bee, our results address the potential ability of the southermost P. catamarcensis populations to overcome the negative effects of urban warming observed for other bees.

Argumentation-based query answering under uncertainty with application to cybersecurity Leiva, Mario Alejandro; García, Alejandro Javier; Shakarian, Paulo; Simari, Gerardo Decision support tools are key components of intelligent sociotechnical systems, and their successful implementation faces a variety of challenges, including the multiplicity of information sources, heterogeneous format, and constant changes. Handling such challenges requires the ability to analyze and process inconsistent and incomplete information with varying degrees of associated uncertainty. Moreover, some domains require the system’s outputs to be explainable and interpretable; an example of this is cyberthreat analysis (CTA) in cybersecurity domains. In this paper, we first present the P-DAQAP system, an extension of a recently developed query-answering platform based on defeasible logic programming (DeLP) that incorporates a probabilistic model and focuses on delivering these capabilities. After discussing the details of its design and implementation, and describing how it can be applied in a CTA use case, we report on the results of an empirical evaluation designed to explore the effectiveness and efficiency of a possible world sampling-based approximate query answering approach that addresses the intractability of exact computations.

Interactions between the Nicotinic and Endocannabinoid Receptors at the Plasma Membrane Valles, Ana Sofia; Barrantes, Francisco Jose Compartmentalization, together with transbilayer and lateral asymmetries, provide the structural foundation for functional specializations at the cell surface, including the active role of the lipid microenvironment in the modulation of membrane-bound proteins. The chemical synapse, the site where neurotransmitter-coded signals are decoded by neurotransmitter receptors, adds another layer of complexity to the plasma membrane architectural intricacy, mainly due to the need to accommodate a sizeable number of molecules in a minute subcellular compartment with dimensions barely reaching the micrometer. In this review, we discuss how nature has developed suitable adjustments to accommodate different types of membrane-bound receptors and scaffolding proteins via membrane microdomains, and how this ?effort-sharing? mechanism has evolved to optimize crosstalk, separation, or coupling, where/when appropriate. We focus on a fast ligand-gated neurotransmitter receptor, the nicotinic acetylcholine receptor, and a second-messenger G-protein coupled receptor, the cannabinoid receptor, as a paradigmatic example.

Cámaras empresariales y asociaciones comerciales de agentes privados en el Área Metropolitana de Córdoba (2018) Archivo ESRI Shape multipuntos que registra la ubicación de los edificios registrados como sedes de cámaras empresariales y asociaciones comerciales de agentes privados en el Área Metropolitana de Córdoba, de acuerdo a un relevamiento realizado en 2018 sobre datos de Google Maps. Los datos sólo registran ubicación, no razón social y/o personería jurídica.

Señales electromiográficas tomadas del antebrazo de personas sanas durante la ejecución de movimientos de la mano El set de datos cuenta con señales EMG recolectadas en una persona sana con electrodos ubicados en el antebrazo. Los gestos motores que se realizaron fueron: abrir y cerrar la mano, abducción y adducción de la muñeca, flexión y extensión de la muñeca y descanso.