Geografías transfeministas en espacios educativos: diálogos sobre la problemática de la explotación sexual Garcia, Leticia; Moreno, Magdalena En este escrito presentamos un diálogo acerca de la explotación sexual, abordada como problemática geográfica y como contenido de las currículas en espacios educativos. En un comienzo planteamos nuestra postura política con respecto a los debates que se desarrollan dentro del campo del feminismo y reconocemos la diversidad de nuestros recorridos…

Low-dose prestorage 24-epibrassinolide spray enhances postharvest chilling tolerance in zucchini squash (Cucurbita pepo L.) by eliciting peroxidase and phenolic antioxidants Massolo, Juan Facundo; Sánchez, Ramiro Julián; Zaro, Maria Jose; Concellón, Analía; Vicente, Ariel Roberto Brassinosteroids are polyhydroxy steroid hormones, tested to induce cold acclimation in whole plants and some harvested fruits. So far, no works have determined whether such strategy may improve the chilling tolerance of immaturely harvested Cucurbits, which are, among the most sensitive vegetables. Herein, we evaluated the efficacy of 24-epibrassinolide to reduce chilling injury in zucchini squash (Cucurbita pepo L.). Prestorage sprays at a dose 10–100 times lower than reported for postharvest use in other fruits (0.1 μM), markedly reduced chilling injury incidence (ca. 70%) and severity (30%–40%), decreased weight loss, and delayed yellowing. After long-term storage, epibrassinolide-sprayed zucchini maintained lower electrolyte leakage and lipid peroxidation. The treatment also increased fruit antioxidant defenses by inducing peroxidase and increasing antioxidant capacity, phenolic compounds, and peroxidase activity. This is the first report showing that low-dose prestorage 24-epibrassinolide priming enhances the cold tolerance of immaturely harvested Cucurbits, preventing postharvest chilling injury. Novelty impact statement: This is the first study showing that brassinosteroid prestorage single spray at very low dose (0.1 μM) is sufficient to enhance the chilling tolerance of immaturely harvested Cucurbit vegetables. Epibrassinolide priming may be a feasible strategy to reduce chilling damage in highly sensitive zucchini squash.

Multi-method sensory approach to describe the effect of microwave-assisted extraction and addition of stems on the mouthfeel sensations of Bonarda wines from Mendoza (Argentina) Alvarez Gaona, Izmari Jasel; Fanzone, Martín Leandro; Sari, Santiago Eduardo; Catania, Anibal Alejandro; Coronado, Ignacio León; Jofré, Viviana; Zamora, María Clara; Galmarini, Mara Virginia The Bonarda variety has been used as a base for common red wines due to its contribution to color and low level of astringency as a consequence of its relative low tannin concentration. The use of MicrowaveAssisted Extraction (MWE) accelerates the maceration process, improving the diffusion of grape compounds into the must, while the stems addition during maceration/fermentation constitutes a sustainable technological alternative for increasing tannins at no additional cost. The present experimental design consisted of ten treatments (in triplicate), obtained combining both technologies. Two maceration strategies were applied: Control must (C) which was not treated, and must treated with microwavedassisted extraction after grape crushing. These were combined with five Stem-contact conditions (ST): C without ST, 50% ST addition, addition of 50% ST previously treated with MWE, 100% ST addition, and addition of 100% ST previously treated with MWE. The effect of the winemaking technologies on wine mouthfeel sensations was evaluated by different (static and dynamic) sensory methods: Sorting Task; Check-All-That-Applies (CATA) with different textiles as trans-modal references; and Temporal Dominance of Sensations (TDS). CATA evaluation revealed that threof the wine samples differed in their description. These were then dynamically described showing subtle differences in their TDS curves. The sequentiality of dominant sensations showed that the MWE treatment of the grapes and the combination ST with MWE did not modify dramatically mouthfeel sensations in Bonarda wines.

La defensa como herramienta de acople: El caso de Argentina frente a Estados Unidos (2015-2019); Defense as a Bandwagoning Tool: The Case of Argentina Against the United States (2015-2019) Magnani, Ezequiel Los estudios sobre la defensa nacional en Argentina hasta el momento no han incluido en su agenda los aportes de la “escuela de la autonomía”. Considerando que dicha tradición plantea distintas formas que tienen los Estados de vincularse con Estados Unidos (acople/resistencia) y que la defensa es un ámbito gubernamental que incide en dicha vinculación, el presente artículo tiene un doble objetivo: dar cuenta teóricamente de la forma en la que la política de defensa puede contribuir a una estrategia de acople hacia Estados Unidos, e ilustrar empíricamente dicha relación teórica, a partir del análisis de la política de defensa argentina. Se utiliza una metodología cualitativa, tomando como estudio de caso la política de defensa que llevó adelante Argentina durante el período 2015-2019. Se toma como referencia empírica a tres áreas propias de la defensa nacional: la definición de amenazas, la defensa como herramienta de posicionamiento internacional y la forma en que se realiza la adquisición de capacidades militares. Se concluye que el estudio de la política de defensa argentina (2015-2019) permite afirmar que la defensa nacional puede ser utilizada como una herramienta de acople hacia los Estados Unidos.; Studies on national defense in Argentina have not addressed the contributions of the “escuela de la autonomía”. Considering that this theoretical tradition proposes different ways in which States can enable links with the United States (bandwagon/resistance) and that defense policy is a governmental area that affects that relationship, the article has a double objective: to inquire theoretically about the way in which defense policy can contribute to a bandwagon strategy towards the Unites States and to illustrate empirically this theoretical relationship from the analysis of the Argentine defense policy. A qualitative methodology is used, taking as a case study the defense policy carried out by Argentina during the period 2015-2019 and taking three areas of national defense as an empirical reference: the definition of threats, defense as an international positioning tool, and the way in which military capabilities are acquired. It is concluded that the study of the Argentine defense policy (2015-2019) indicates that national defense can be used as a bandwagoning tool towards the United States.

Sobre el mimo en Bizancio: Pródromos y su Amaranto (H 146); About the Byzantine mime: Prodromus and his Amarantus (H 146) Cavallero, Pablo Adrian Se presenta la versión española con notas y estudio del texto 146 Hörandner de Pródromos(s. xii) sobre la edición de Migliorini (2010), con algunas pequeñas modificaciones, y se postula que se trata de un mimo literario, representado efectivamente en una tertulia, un θέατρον bizantino.; It is presented here a Spanish version of the Prodromus' text 146 Hörandner (xiith century), with footnotes and a study, on the basis of the Migliorini's edition (2010) with some little modifications. It is postulated that this text is a literary mime, which performance was made in a social gathering, a Byzantine θέατρον.

Sistemas de Información Geográfica en América Latina (1987-2021): Análisis de su evolución académica basado en las CONFIBSIG Buzai, Gustavo Daniel; Robinson, David J. El presente trabajo es la actualización del artículo de Buzai y Robinson (2010). Centrando el análisis en el contenido de las Conferencias Iberoamericana de Sistemas de Información Geográfica (CONFIBSIG) se realiza un análisis de la evolución temática en la región. Para ello contempla el inicio en 1987 en la Universidad Nacional (Costa Rica) y recorre los 17 eventos realizados, con los cuales se llega a los 35 años de desarrollo. Se realiza un análisis por décadas con síntesis en un gráfico de modelización temporal a partir del cual, la diferencia en la pendiente encontrada entre los países centrales y los países de América Latina produce una impronta particular respecto de la adopción de la tecnología tanto en actividades de docencia como de investigación aplicada. Esta actualización surge como nueva base para avanzar en perspectivas futuras.; This paper is an update of the article by Buzai and Robinson (2010). Focusing the analysis on the content of the Ibero-American Conferences on Geographic Information Systems (CONFIBSIG), an analysis is made of the thematic evolution in the region. For this purpose, it considers the beginning in 1987 at the National University (Costa Rica) and goes through the 17 events held, with which 35 years of development have been reached. An analysis is made by decades with a synthesis in a time modeling graph from which the difference in the slope found between the central countries and the countries of Latin America produces a particular imprint regarding the adoption of technology in both teaching and applied research activities. This update emerges as a new basis for advancing in future perspectives.

Copy Number Variation (CNV): A New Genomic Insight in Horses Nora Laseca; Antonio Molina; Mercedes Valera; Alicia Antonini; Demyda Peyrás, Sebastián This study aimed to contribute to our knowledge of CNVs, a type of genomic marker in equines, by producing, for the first time, a fine-scale characterization of the CNV regions (CNVRs) in the Pura Raza Española horse breed. We found not only the existence of a unique pattern of genomic regions enriched in CNVs in the PRE in comparison with the data available from other breeds but also the incidence of CNVs across the entire genome. Since these regions could affect the structure and dose of the genes involved, we also performed a gene ontology analysis which revealed that most of the genes overlapping in CNVRs were related to the olfactory pathways and immune response.

El sujeto-objeto de la filosofìa es inherentemente sexuado Binetti, María José En lo que sigue intentaremos mostrar por qué para nosotras el sujeto y objeto de la filosofía ha sido y es inherentemente sexuado. Esto supone varias ideas, tantas cuantas expresiones sexuales contenga la existencia. Entre ellas, supone la sexualidad como impulso creador del pensamiento, fuerza de diferenciación y unidad, de concepción y nacimiento de lo real. Quizás debamos mencionar al respecto que el propio nombre filo-sofía supone la síntesis originaria del pensamiento con cierta energía vital inmanente, esa misma que los antiguos llamaron Eros y entendieron como algo divino. Apoyaremos la idea del sujeto-objeto sexuado de la filosofía en el pensamiento feminista y, en concreto, en el feminismo de la diferencia sexual, el cual ha dado un giro decisivo en la concepción de la ontología.

La democratización como eje de la Intervención profesional del trabajo social; Democratization as the Main Concept of the Professional Intervention of Social Work Berná Vaccarino, Federico Antonio El trabajo que aquí se presenta, es una investigación cualitativa realizada en el marco de una tesis de grado en el año 2014. A través de entrevistas y grupo focal, se indagó sobre la relación entre trabajo social y democracia. De esta forma, se arribó a la conclusión de que es posible que nuestra disciplina haga sus aportes a la construcción de sociedades más democráticas, si al momento de la intervención profesional aplica pequeños procesos democratizadores en los distintos espacios y relaciones sociales. Poder, conflicto, construcción y deconstrucción, participación, derechos y ciudadanía, son algunos de los muchos conceptos que entran en discusión a lo largo de cuatro capítulos: intervención, instituciones, democracia y perspectiva democratizadora para el ejercicio disciplinar.; The following paper is qualitative research carried out within the framework of a graduate thesis in 2014. The relationship between social work and democracy was researched through interviews and a focus group. In this way, the conclusion reached was that it is possible that our discipline contributes to building more democratic societies if, at the time of professional intervention, small democratizing processes in the different spaces and social relations are applied. Power, conflict, construction and deconstruction, participation, rights and citizenship, are some of the many concepts that come into discussion throughout four chapters: intervention, institutions, democracy and a democratizing perspective for disciplinary exercise.

Rousseau’s General Will as a Bound for Strategic Self-Interested Voting; La voluntad general de Rousseau como un límite al voto estratégico autointeresado Bodanza, Gustavo Adrian; Linares, Sebastián Condorcet’s voting method, as its extension known as the Kemeny-Young rule, is often seen as the incarnation of Rousseau’s general will. But the Kemeny-Young rule has problems when cycles in the social ranking arise. In particular, it can lead to choose a “covered” alternative, i.e. one for which there are candidates with better performances in pairwise comparisons. On the other hand, the uncovered set, the set of all the alternatives that are not covered, puts limits to insincere votes of sophisticated voters under certain conditions. Basically, voting insincerelly for a non-preferred alternative in order to favor the actually preferred candidate would lead to the choice of an uncovered alternative. We argue that Rousseau’s general will could be embodied in a different kind of rule than Kemeny-Young’s, with both epistemic credentials and whose outcomes are within the uncovered set altogether. In this work we begin to explore that possibility.

Guano extraction in Atlantic Patagonia (1840–1880) Haller, Sofía Clara Between 1840 and 1880, multiple ships travelled towards the Atlantic coast of Patagonia, engaging in guano extraction. The Patagonian guano, though of inferior quality to the Peruvian product, was one of the most valuable coastal resources of the region. Drawing on a wide variety of documents and literature, the author has explored exploitation practices and logistics. 11 guano deposits exploited have been mapped and linked with details such as vessels, companies and harbours. The history of guano in the region shows an entanglement of connections and competition regarding the resource, raising inter-imperial disputes where different state and non-state agents operated to benefit both distant and regional economies.

Dysregulated light/dark cycle impairs sleep and delays the recovery of patients in intensive care units: A call for action for COVID-19 treatment Golombek, Diego Andrés; Pandi Perumal, Seithikurippu R.; Rosenstein, Ruth Estela; Lundmark, Per Olof; Spence, David Warren; Cardinali, Daniel Pedro; Reiter, Russel; Brown, Gregory M. Exposure to an adequate light–dark cycle is important for the speedy recovery of hospitalized and institutionalized patients. Light exposure, including natural light, offers several health benefits to both patients and nursing staff. This includes physical (e.g., decreased confusion and disorientation) and mental health benefits (e.g., prevention of depression) and a reduction in the hospital stay. Improved alertness and performance can also be noted among hospital staff. In this commentary, we discuss disrupting factors that 20 include light during the nighttime along with noise and physical procedures on the patient and others. We then address some of the important steps that can be undertaken to restore a more normal environment for patients in the intensive care unit, which can be particularly important for COVID-19 patients.

Producción de partículas virales pseudotipadas SARS-CoV-2 para la evaluación de nuevas terapias para COVID-19; Production of SARS-CoV-2 pseudotyped viral particles for the evaluation of new therapies against COVID-19 Etchevers, Lucas; Silvestrini, Paula; Velazquez, Natalia Soledad; Baravalle, María Eugenia; Renna, Maria Sol; Olmos Nicotra, Maria Florencia; Ortega, Hugo Hector; Marelli, Belkis Ester La inmunoterapia pasiva como tratamiento contra el virus SARS-CoV-2 (del inglés, severe acute respiratory syndrome coronavirus-2) requiere de la cuantificación de la capacidad neutralizante de los anticuerpos para el desarrollo de terapias efectivas. Para ello, es necesario el uso de partículas virales pseudotipadas no replicativas. Sin embargo, los reactivos de transfección necesarios para su producción son costosos y, en consecuencia, resulta una limitante al momento de escalar la producción. Una manera de eludir esta limitante es el uso de la polietilenimina (PEI), un polímero catiónico de bajo costo. El objetivo del trabajo consistió en optimizar un ensayo de transfección transitoria de bajo costo para producir pseudopartículas virales que expresen la proteína Spike del virus SARSCoV-2. Se realizaron ensayos de transfección en células HEK-293T evaluando diferentes concentraciones de PEI y tiempos de incubación. La transfección se evaluó mediante microscopía de epifluorescencia y citometría de flujo, mostrando que la condición de transfección que tiende a arrojar mejores resultados fue luego de 48 horas de incubación utilizando una relación 1/10 (ADNp/PEI). En conclusión, se ha logrado adaptar un protocolo para producir partículas lentivirales que expresan Spike utilizando un reactivo de transfección de bajo costo. Esto permitiría escalar la producción para, posteriormente, diseñar una plataforma para evaluar terapias para COVID-19.; Passive immunotherapy as a treatment against SARS-CoV-2 (severe acute respiratory syndrome coronavirus-2) requires to quantify neutralizing capacity of antibodies for development of effective therapies. However, the transfection reagents necessary for its production are expensive and, consequently, it is a limitation for the scaling up production. Using of polyethyleneimine (PEI), a lowcost cationic polymer, allows to avoid this. The objective of this work was to optimize a low-cost transient transfection assay to produce pseudoparticles that express the Spike protein of SARS-CoV-2. Transfection assays were performed in HEK-293T cells treated with different PEI concentrations and evaluating different incubation times. Transfection was assesed by epifluorescence microscopy and flow cytometry, showing that the transfection condition that tends to yield better results was after 48 hours of incubation using a 1/10 ratio (pDNA / PEI). In conclusion, it has been possible to adapt a protocol to produce spike-expressing lentiviral particles using a low-cost transfection reagent. This would allow to scale up the production and, following, to design a platform for evaluation of COVID-19 therapies.

La paleoherpetología en la Universidad de Buenos Aires: pasado y presente; Paleoherpetology at the Universidad de Buenos Aires: past and present Leardi, Juan Martín; Farina, Martin Ezequiel; Gomez, Raul Orencio; Marsicano, Claudia Alicia La Facultad de Ciencias Exactas y Naturales (FCEN) de la Universidad de Buenos Aires (UBA) se alojó inicialmente en la Manzana de las Luces de la Ciudad Autónoma de Buenos Aires, para luego reubicarse en los Pabellones I y II del complejo Ciudad Universitaria. Los estudios paleoherpetológicos en UBA se iniciaron con el Dr. Osvaldo Reig quien estuvo tres períodos en la institución: primero a fines de los 50, luego desde inicios a mediados de los 60 y finalmente a principios de los 80. Durante su primera época continuó con sus estudios de materiales fósiles de arcosaurios triásicos y anuros mesozoicos y cenozoicos. En su segundo período en la FCEN estuvo más enfocado en estudios microevolutivos basados en materiales actuales. La Dra. Ana María Báez se especializó en el estudio de los anfibios anuros, interactuando internacionalmente con destacados investigadores y formando profesionales en dicha temática y se desempeñó como profesora de la FCEN hasta el 2006. Tras su cese de actividades como profesora, este rol fue ocupado por su discípula la Dra. Claudia A. Marsicano, quien se dedicó al análisis de los anfibios temnospóndilos, aunque actualmente amplió sus estudios a las faunas de tetrápodos del Permo-Triásico de Gondwana. La Dra. C. A. Marsicano fundó el Laboratorio de Estudios Paleobiológicos en Ambientes Continentales y formó tesistas de grado y doctorado en paleoherpetología. En la actualidad los investigadores en paleoherpetología más jóvenes en la FCEN son Juan M. Leardi, que estudia crocodilomorfos, y Raúl O. Gómez, especializado en anuros y otros vertebrados.; The Facultad de Ciencias Exactas y Naturales (FCEN) of the Universidad de Buenos Aires (UBA) was originally located in the area of the Buenos Aires downtown known as the Manzana de las Luces and then was relocated to the buildings I and II of Ciudad Universitaria. The paleoherpetological studies in this institution began with the contributions of Dr. Osvaldo Reig, who was at UBA in three separate periods: first in the early ’50s, then during the earlies and mid ’60s, and finally in the mid ’80s. During his first period his research was focused on Triassic archosaurs and anurans from the Mesozoic and Cenozoic. On his second period at FCEN, his research was focused towards microevolutionary studies based on extant species. Dr. Ana María Báez is a specialist in fossil anurans, who had a high impact on the field and formed several students and acted as a professor at FCEN up to 2006. After A. M. Báez retired from her teaching duties, her place was filled by her disciple Dr. Claudia A. Marsicano. Dr. C. A. Marsicano centered her early studies on fossil temnospondyls to later expand her focus to the analyses of Permo-Triassic tetrapod faunas of Gondwana. C. A. Marsicano founded the Laboratorio de Estudios Paleobiológicos en Ambientes Continentales and has acted as advisor in several undergraduate and doctoral theses. The younger paleoherpetologists of the FCEN are Dr. Juan M. Leardi, whose research focuses in fossil crocodylomorphs, and Dr. Raúl O. Gómez, who studies fossil anurans and other vertebrates.

Silver nanoparticles synthesized by the heavy metal resistant strain Amycolatopsis tucumanensis and its application in controlling red strip disease in sugarcane Guerrero, Daiana Soledad; Bertani, Romina Priscila; Ledesma, Ana Estela; Frias, Maria de Los Angeles; Romero, Cintia Mariana; Dávila Costa, José Sebastián The production of bioethanol and sugar from sugarcane is an important economic activity in several countries. Sugarcane is susceptible to different phytopathogens. Over the last years, the red stripe disease caused by the bacterium Acidovorax avenae subsp. avenae produced significant losses in sugarcane crops. Bio-nanotechnology emerged as an eco-friendly alternative to the biosynthesis of antimicrobial molecules. The aims of this study were to (a) produce extracellular silver nanoparticles using the heavy metal resistant strain Amycolatopsis tucumanensis,(b) evaluate their antibacterial in vitro effect and (c) determine the potential of silver nanoparticles to protect sugarcane against red stripe disease. Amycolatopsis tucumanensis synthesized spherical silver nanoparticles with an average size of 35 nm. Nanoparticles were able to control the growth of A. avenae subsp. avenae in in vitro assays. In addition, in vivo assays in sugarcane showed a control upon the red stripe disease when silver nanoparticles were applied as preventivetreatment. The Disease Severity Index was 28.94% when silver nanoparticles were applied 3 days before inoculation with A. avenae subsp. avenae. To our knowledge, this is the first report of silver nanoparticles extracellularly synthesized by an Amycolatopsis strain that were able to inhibited the growth of A. avenae subsp. avenae and control the red stripe disease in sugarcane.

Quantitative matrix weighted estimates for certain singular integral operators Muller, Pamela Anahí; Rivera Ríos, Israel Pablo In this paper quantitative weighted matrix estimates for vector valued extensions of Lr′-Hörmander operators and rough singular integrals are studied. Strong type (p,p) estimates, endpoint estimates, and some new results on Coifman-Fefferman estimates assuming A∞ and Cp condition counterparts are provided. To prove the aforementioned estimates we rely upon some suitable convex body domination results that we settle as well in this paper.

TikTok, el salvavidas de la industria editorial Cuestas, Paula; Saez, Victoria La Feria del Libro de Buenos Aires reabre sus puertas después de tres años y la expectativa es inmensa: es el exorcismo con el que sueña la industria editorial argentina, una de las más golpeadas por la crisis económica y la pandemia. La esperanza descansa, principalmente, en el segmento que más lee y que mantuvo su amor por los libros a pesar del aislamiento: los y las jóvenes. Un grupo que crece día a día de la mano de tiktokers, youtubers, instagramers y bloggers.

Varieties with existentially definable factor congruences Badano, Mariana; Campercholi, Miguel Alejandro Carlos; Vaggione, Diego Jose We study the varieties with 0 → and 1 → where factor congruences are definable by existential formulas parameterized by central elements. This continues previous work on equational definability of factor congruences.

Registros paleobiogeográficos de graptoideos Floianos (Ordovícico Temprano) Registros de gaptolitos ordovícicos de la secciones de Muñayoc y Río Santa Rosa, provincia de Jujuy, y en otras regiones del mundo con el fin de realizar un análisis paleobiogeográfico.

Chaotic fluctuations in mitochondrial function under oxidative stress. Superoxide dismutatase (SOD2) concentrations of 0.013, 0.016,0.0164, 0.0216733 mM These chaotic time series of mitochondrial dynamics under conditions of oxidative stress are analyzed in detail in Kembro et al. 2018. Mitochondrial chaotic dynamics: Redox-energetic behavior at the edge of stability. Mitochondrial model used was described in the project overview and in detail (Kembro et al. 2013. Biophys J 104(2):332-343; Kembro et al., 2014. Front Physiol 5:257).