Construcción de ecosistemas de aprendizaje en clases de consulta en formación superior Foresto, Emiliano; Manavella, Agustina Maria; Martin, Rocío Belén En esta investigación se han descrito los rasgos que caracterizan a las clases de consulta universitarias e institutos terciarios. Si bien dichos espacios no se encuentran dentro del currículum prescripto, sí figuran en los mensajes que los docentes fijan en las carteleras. La participación en las clases de consulta es un tanto arbitraria: los días, horarios y espacios en que se ofrecen son fijados por cada docente. La metodología fue un estudio de caso múltiple. Participaron siete docentes pertenecientes a diversas universidades e institutos terciarios de Río Cuarto, Sampacho y Villa Mercedes y diez estudiantes que asistieron a las clases de consulta. Los datos fueron recabados a través de observaciones no participantes y entrevistas individuales y semi-estructuradas. Los resultados muestran la relevancia en la construcción colaborativa de habilidades profesionales y socio-emocionales, la autonomía de trabajo, el aprendizaje a partir de problemas genuinos, la construcción de procesos identitarios y de metas compartidas. Estos rasgos, sumados a las particularidades de los métodos de enseñanza, el lugar en el que se llevan a cabo las clases de consulta y los tiempos de duración, permiten pensar en la complejidad que atraviesan estos ámbitos de aprendizaje.INDEX: Latindex Catálogo.

Bentonite-composite polyvinyl alcohol/alginate hydrogel beads: Preparation, characterization and their use as arsenic removal devices Baigorria, Estefanía; Cano, Leonardo Andres; Sanchez, Laura Mabel; Alvarez, Vera Alejandra; Ollier Primiano, Romina Paola Arsenic (As) is a major source of water contamination that has both natural and anthropogenic origins, so that, to remove it from water is a relevant topic. Taking into account the ease of operation, the cost of processing and the required instrumentation, adsorption processes could be considered as very convenient alternative technologies for water remediation. The present research work is focused on the development and characterization of eco-friendly polyvinyl alcohol (PVA) and alginate (Alg) hydrogel beads containing natural bentonite (Bent) as potential useful devices for As removal from polluted water. Composite beads with different PVA/Alg proportions (75/25 and 50/50) with and without 30 wt.% Bent were prepared by ionic gelation. The obtained beads were thoroughly characterized by means of thermal analysis (differential scanning calorimetry and thermogravimetric analysis), crosslinking degree by evaluating the gel fraction (GF), the capacity of swelling, morphological aspects (by Scanning Electron Microscopy), functional groups and interactions (by FTIR) and finally, the performance of the beads as arsenic adsorbent was tested by treating batch aqueous solutions. Morphological investigations showed that wet beads were highly porous and spherical. Moreover, the beads with the highest PVA content absorbed higher amounts of water whereas the incorporation of clay to the hydrogels produced a reduction on the swelling degree and an increase of GF. The adsorption behavior of the pearls towards As was studied in terms of PVA/Alg ratio, clay loading and contact time. The results clearly demonstrated that the clay inclusion plays a key role in the As removal since unfilled PVA/Alg beads were not able to remove it. The FTIR spectra of beads after As removal show the partial migration of the components of the beads, which can be associated with the intermediate crosslinking degree and almost amorphous state within the matrix.

Characterization of surface films on constructional steel in carbonated media containing chloride and nitrite ions Frontini, María Alejandra; Gomez Sanchez, Andrea Valeria; Guidoni, G.M.; Vazquez, Marcela Vivian; Valcarce, María Beatriz The inhibition effect of NaNO2 on the electronic properties of the passive film was investigated for carbon steel exposed to solutions of pH = 13 and pH = 9 keeping the ratio [inhibitor]/[chloride]=1. Cyclic voltammograms, polarization curves, electrochemical impedance spectroscopy, Mott-Schottky plots and X-ray photoelectron spectra were analyzed. Steel is passive at pH=13 and active at pH=9 (carbonated solutions). Passivity can be regained in carbonated solutions when nitrite ions are also present. The thickness and composition of the surface films depend on alkalinity. Both films behave as n-type semiconductors. Donor density values are similar for films grown in solutions containing nitrite ions, regardless of the presence of carbonate ions and the difference in alkalinity. Nitrite ions inhibit pitting in both solutions, although the difference between pitting and open circuit potentials is 2.7 times higher at pH=13. Donor density values cannot be used as the single parameter to evaluate pitting risk.

Milicias provinciales y ejércitos nacionales: las dimensiones simbólicas en la construcción de las identidades políticas en Tucumán y el norte argentino durante la guerra contra la Confederación Perú-boliviana (1837-1839) Parrado, Emmanuel El presente artículo tiene como objetivo el análisis simbólico de losbatallones de milicias provinciales pertenecientes a la Confederación argentinadestinados a combatir en la guerra contra la Confederación Perú-boliviana (1837-1839). Constituye una oportunidad para analizar el comportamiento soberano deTucumán y las provincias del norte argentino y su inserción en la políticanacional durante el liderazgo político de Juan Manuel de Rosas en el Río de laPlata. Mediante el estudio de las identidades políticas, la hipótesis considera quelas denominaciones de las milicias provinciales se ligaron a la tradición federal ylas mismas adquirieron un carácter simbólico nacional al momento detrasladarse a territorio enemigo para combatir contra un ejército extranjero.

Spatio-temporal variation of predatory hoverflies (Diptera: Syrphidae) and their relationship with aphids in organic horticultural crops in la plata, buenos aires Variación espacio-temporal de sírfidos depredadores (Diptera: syrphidae) y su asociación con áfidos en cultivos hortícolas orgánicos de la plata, buenos aires; Variación espacio-temporal de sírfidos depredadores (Diptera: Syrphidae) y su asociación con áfidos en cultivos hortícolas orgánicos de La Plata, Buenos Aire Diaz Lucas, María F.; Passareli, Lilián M.; Maza, Noelia; Aquino, Daniel A.; Greco, Nancy M.; Rocco, Margarita Las variaciones poblacionales de sírfidos depredadores en los agroecosistemasdependen principalmente de los recursos ofrecidos por los cultivos y la vegetación silvestre,así como de la mortalidad causada por sus enemigos naturales. En este trabajoidentificamos I) las especies de sírfidos afidófagos en lechuga y brócoli, II) las variacionesestacionales de los estados inmaduros y el parasitismo larval, y III) las plantas aledañas a loscultivos más visitadas. Se registraron los estados inmaduros de los sírfidos y los áfidoscolectando quincenalmente 30 hojas al azar en cada cultivo durante 2018-2019. Los adultosde sírfidos registrados por observación directa durante 10 minutos en parches de vegetaciónsilvestre, fueron colectados manualmente y se determinaron las plantas visitadas. Lossírfidos fueron Allograpta exotica Wiedemann y Toxomerus duplicatus Wiedemann;solamente la primera especie fue registrada en los cultivos. Los áfidos más abundantesfueron Myzus persicae (Sulzer) en lechuga y Brevycorine brassicae (L.) en brócoli. Elparasitismo larval varió entre 8 y 100%, registrándose Diplazon laetatorius (Fabricius) enambos cultivos, y Pachyneuron aff. nelsoni solo en brócoli. Galinsoga parviflora Cav. yMatricaria chamomilla L. fueron las plantas silvestres más visitadas. Estos conocimientosson relevantes para el control biológico de áfidos por sírfidos en el marco del controlbiológico por conservación.; Population variations of predatory hoverflies in agroecosystems depend mainly on the resources that crops and wild vegetation provides them as well as death caused by natural enemies. We identified I) aphidophagous hoverfly species in lettuce and broccoli crops in Buenos Aires, II) the seasonal variations of the immature stages and their larval parasitism, and III) the wild plants, surrounding the crops, visited by adults. Fortnightly, 30 leaves were randomly selected in both crops during 2018-2019 and immature stages of syrphids and aphids per leaf were recorded. Adults were manually collected in patches of the wild plants (during 10 min of direct observations), and plants visited by adults were determined. The hoverflies were Allograpta exotica Wiedemann and Toxomerus duplicatus Wiedemann. Only A. exotica was recorded in crops. The dominant aphids were Myzus persicae (Sulzer) in lettuce and Brevycorine brassicae (L.) in broccoli. Parasitism rates ranged between 8 and 100% and the species were Diplazon laetatorius (Fabricius), in both crops, and Pachyneuron aff. nelsoni only in broccoli. Galinsoga parviflora Cav. and Matricaria chamomilla L. were the wild plants most often visited by hoverflies. This work provides basic information for the control of aphids by hoverflies in the framework of conservation biological control

Biophotonics. Fluorescence and replectance in living organisms Lagorio, María Gabriela; Cordon, Gabriela Beatriz; Iriel, Analia; Romero, Juan Manuel; Faivovich, Julián; Taboada, Carlos The light that emerges from a biological entity is relevant from many aspects. In thefirst place, it allows the construction of the organism?s image and consequently itis responsible for visual perception and communication. Secondly, it can becomean important tool in obtaining both physiological and chemical information fromthe observed entity, in a non-destructive way. When an organism is illuminated,the non-absorbed energy emerges as transmitted or reflected light. Additionally,fluorescence, phosphorescence or bioluminescence may be emitted. In ourresearch group, we have studied and modelled the light released as reflectanceand fluorescence for different biological systems like flowers, fruits, plant leaves,canopies, bird?s plumage and amphibians. In this review, we present the advances we have made in this area. They rangefrom the development of theoretical approaches to the implementation of optical methodologies for practical applications.The analysis of light interaction with biological material, which is the domain of biophotonics, has recently acquired greatimportance in view of the increasing use of optical techniques to the study of living tissues. However, the interpretationof the photophysical and spectroscopic properties of these systems is usually complicated by several factors: elevatedchromophore?s concentration, optical inhomogeneity, multi-scattering of photons and presence of multi-layered structuresin most cases. Because of these, the accurate modelling of the interaction with light helps to avoid artifacts and to betterinterpret the processes that take place. Physical models used in the analysis of chlorophyll fluorescence in leaves andcanopies with application in remote sensing, optical methodologies for food control and quantification of fluorescence in vivofor evaluation of its biological relevance are examples of the use of the emission of light and will be presented in this review.

NADPH oxidase and mitochondria are relevant sources of superoxide anion in the oxinflammatory response of macrophages exposed to airborne particulate matter Cáceres, Lourdes; Paz, Mariela Laura; Garcés, Mariana; Calabró López, María Valeria; Magnani, Natalia Daniela; Martinefski, Manuela; Martino Adami, Pamela Victoria; Caltana, Laura Romina; Tasat, Deborah; Morelli, Laura; Tripodi, Valeria Paula; Valacchi, Giuseppe; Alvarez, Silvia; Gonzalez Maglio, Daniel Horacio; Marchini, Timoteo Oscar; Evelson, Pablo Andrés Exposure to ambient air particulate matter (PM) is associated with increased cardiorespiratory morbidity and mortality. In this context, alveolar macrophages exhibit proinflammatory and oxidative responses as a result of the clearance of particles, thus contributing to lung injury. However, the mechanisms linking these pathways are not completely clarified. Therefore, the oxinflammation phenomenon was studied in RAW 264.7 macrophages exposed to Residual Oil Fly Ash (ROFA), a PM surrogate rich in transition metals. While cell viability was not compromised under the experimental conditions, a proinflammatory phenotype was observed in cells incubated with ROFA 100 μg/mL, characterized by increased levels of TNF-α and NO production, together with PM uptake. This inflammatory response seems to precede alterations in redox metabolism, characterized by augmented levels of H2O2, diminished GSH/GSSG ratio, and increased SOD activity. This scenario resulted in increased oxidative damage to phospholipids. Moreover, alterations in mitochondrial respiration were observed following ROFA incubation, such as diminished coupling efficiency and spare respiratory capacity, together with augmented proton leak. These findings were accompanied by a decrease in mitochondrial membrane potential. Finally, NADPH oxidase (NOX) and mitochondria were identified as the main sources of superoxide anion ([Formula presented]) in our model. These results indicate that PM exposure induces direct activation of macrophages, leading to inflammation and increased reactive oxygen species production through NOX and mitochondria, which impairs antioxidant defense and may cause mitochondrial dysfunction.

Arquitectura y política en la historia reciente de la arquitectura argentina, un estado de la cuestión para volver sobre los años sesenta y setenta Durante, Maria Eugenia El proceso de politización de los intelectuales en los años sesenta y setenta en Argentina permeó en el campo arquitectónico, donde profesionales y estudiantes se involucraron en las luchas de los movimientos sociales y buscaron dar un nuevo sentido político a sus prácticas y saberes. Ante esto, la historia de la arquitectura local adoptó la hipótesis de la disolución de la disciplina, lo que no permitió visibilizar cuáles fueron los desafíos y dilemas que enfrentó esta generación. Este artículo busca aportar a una historiografía de la historia reciente de la arquitectura argentina que aporte a problematizar la relación de la arquitectura y la política, entre las prácticas profesionales y las prácticas militantes. Se recurre a autores tradicionales de la historia de la arquitectura local y a estudios recientes que se vinculan a la historia de los intelectuales y el movimiento estudiantil en arquitectura y en otros campos disciplinares.; The politicization of intellectuals in the 1960s and 1970s in Argentina permeated the architectural field, where professionals and students became involved in the struggles of social movements, and sought to give a new political meaning to their practices and knowledge. However, the history of local architecture adopted the hypothesis of the dissolution of the discipline, which did not make it possible to make visible what were the challenges and dilemmas that this generation went through. This article seeks to contribute to a historiography of the recent history of Argentine architecture that contributes to problematizing the relationship between architecture and politics, between professional practices and militant practices. This work studies the traditional authors of the history of local architecture and recent studies linked to the history of intellectuals and the student movement in architecture and other disciplinary fields.

FXYD protein isoforms differentially modulate human Na/K pump function Meyer, Dylan J.; Bijlani, Sharan; de Sautu, Marilina; Spontarelli, Kerri; Young, Victoria C.; Gatto, Craig; Artigas, Pablo Tight regulation of the Na/K pump is essential for cellular function because this heteromeric protein builds and maintains the electrochemical gradients for Na+ and K+ that energize electrical signaling and secondary active transport. We studied the regulation of the ubiquitous human α1β1 pump isoform by five human FXYD proteins normally located in muscle, kidney, and neurons. The function of Na/K pump α1β1 expressed in Xenopus oocytes with or without FXYD isoforms was evaluated using two-electrode voltage clamp and patch clamp. Through evaluation of the partial reactions in the absence of K+ but presence of Na+ in the external milieu, we demonstrate that each FXYD subunit alters the equilibrium between E1P(3Na) and E2P, the phosphorylated conformations with Na+ occluded and free from Na+, respectively, thereby altering the apparent affinity for Na+. This modification of Na+ interaction shapes the small effects of FXYD proteins on the apparent affinity for external K+ at physiological Na+. FXYD6 distinctively accelerated both the Na+-deocclusion and the pump-turnover rates. All FXYD isoforms altered the apparent affinity for intracellular Na+ in patches, an effect that was observed only in the presence of intracellular K+. Therefore, FXYD proteins alter the selectivity of the pump for intracellular ions, an effect that could be due to the altered equilibrium between E1 and E2, the two major pump conformations, and/or to small changes in ion affinities that are exacerbated when both ions are present. Lastly, we observed a drastic reduction of Na/K pump surface expression when it was coexpressed with FXYD1 or FXYD6, with the former being relieved by injection of PKA's catalytic subunit into the oocyte. Our results indicate that a prominent effect of FXYD1 and FXYD6, and plausibly other FXYDs, is the regulation of Na/K pump trafficking.

Fermentation as an alternative process for the development of bioinsecticides Omarini, Alejandra Beatriz; Achimón, Fernanda; Brito, Vanessa Daniela; Zygadlo, Julio Alberto Currently, insect pest control is carried out through the application of synthetic insecticides which have been related to harmful effects on both human and environmental health, as well as to the development of resistant pest populations. In this context, the development of newand natural insecticides is necessary. Agricultural and forestry waste or by‐products are very low‐cost substrates that can be converted by microorganisms into useful value‐added bioactive products through fermentation processes. In this review we discuss recent discoveries of compounds obtained from fermented substrates along with their insecticidal, antifeedant, and repellent activities. Fermentation products obtained from agricultural and forestry waste are described indetail. The fermentation of the pure secondary metabolite such as terpenes and phenols is also included.

Efecto antialimentario de extractos vegetales sobre la plaga avícola alphitobius diaperinus (Coleoptera: tenebrionidae): Un estudio exploratorio; Antifeedant effect of plant extracts on the poultry pest Alphitobius diaperinus (Coleoptera: Tenebrionidae): An exploratory study Fernández, Nahuel Federico; Defagó, María Teresa; Palacios, Sara Maria; Arena, Julieta Soledad En este estudio exploratorio se evaluó la actividad antialimentaria de nueve extractos etanólicos de plantas nativas de la región central de Argentina sobre Alphitobius diaperinus (Panzer)(Coleoptera:Tenebrionidae), buscando alternativas de manejo de bajo impacto ambiental para esta plaga.; In this exploratory study, the antifeedant activity of ethanolic extracts of nine plants native from central region of Argentina on Alphitobius diaperinus (Panzer) (Coleoptera: Tenebrionidae) was evaluated, looking for low environmental impact management alternatives. Adults of A. diaperinus were exposed to food treated with the extracts to assess whether feeding behaviour and survival were altered. None of the extracts affected adult survival. However, the extracts of Gaillardia megapotamica, Vernonanthura nudiflora, Baccharis artemisioides, Lithraea molleoides, and Ambrosia artemisiifolia had a strong antifeedant effect (92-96%). The other extracts evaluated slightly affected (50-55%) the food consumption. The extracts of G. megapotamica and B. artemisioides were administered with the food to the fifth larval stage to assess whether they affect survival, feeding behaviour, and weight of immature forms. The B. artemisioides extract generated a marked deterrent effect of feeding on the larvae (76%) during the first week of experimentation, although the effect weakened over time. On the other hand, G. megapotamica produced a moderate deterrent effect (41-74%) throughout the experiment. The extracts also affected weight, survival, and number of larval exuviae in relation to the control.

Eficacia antioxidante de extractos de subproductos de la industria oleaginosa en aceite de chía y en modelo de emulsión o/w Jalil Ramallo, M. V.; Bertolino, C. L.; Martinez, Marcela Lilian; Maestri, Damian; Bodoira, Romina Mariana Se estudiaron extractos secos (ES) ricos en compuestos fenólicos de tegumento de maní (ETM) y de harina de sésamo (EHS), obtenidos mediante agua-etanol subcríticos. Los mismos fueron evaluados como agentes antioxidantes en aceite de chía (Rancimat -100 °C) y en emulsión ácida O/W (40 °C-15 días), comparando su accionar con TBHQ. Previamente se caracterizaron mediante el contenido de fenoles totales (ETM: 520 y EHS: 120 mg AG/g ES); DPPH (EC50 ETM 4.97 y EHS 82.83 μg ES/mL); FRAP (EC50 ETM 0.36 y EHS 3.64 μg ES/mL) y -caroteno-linoleico (%AA ETM 40.76 % y EHS 22 %). En presencia de ETM, la estabilidad del aceite de chía aumentó significativamente (75-85 %) y la respuesta fue dependiente de la concentración. En el ensayo de almacenamiento de las emulsiones O / W, el control sin ningún antioxidante alcanzó un índice de peróxidos (IP) de 86 meq O2 / kg de aceite a los 15 días, mientras que las emulsiones con ETM apenas superaron 15 meq O2 / kg. Utilizando 6000 ppm de ETM se disminuyó la velocidad de reacción más de un 50 %. En el caso de EHS, aumentó la estabilidad del aceite de chía, en menor proporción que el ETM (52-59 %), sin embargo en emulsiones O/W demostró un comportamiento prooxidante. Los diferentes resultados en ambas matrices pueden justificarse por el efecto del pH y la composición característica de cada extracto. La extracción con agua-etanol subcríticos del tegumento de maní puede proporcionar extractos ricos en compuestos fenólicos conuso potencial como antioxidante natural de aceite de chía libre y emulsionado en solución ácida.

A sustainable process for biodiesel production using Zn/Mg oxidic species as active, selective and reusable heterogeneous catalysts Navas, Marisa Belén; Ruggera, José Fernando; Lick, Ileana Daniela; Casella, Mónica L. This paper describes the preparation and characterization of MgO and ZnO-based catalysts, pure and mixed in different proportions, supported on γ-Al2O3. Their catalytic performance was studied in the transesterification of soybean oil and castor oil with methanol and butanol, attempting to produce biodiesel. XRD (X-ray diffraction), SEM?EDS (scanning electron microscopy?energy dispersive X-ray spectroscopy), CO2-adsorption and N2-adsorption allowed characterizing the prepared catalysts. The characterization results were in all cases consistent with mesoporous solids with high specific surface area. All the catalysts exhibited good results, especially in the transesterification of castor oil using butanol. For this reaction, the reuse was tested, maintaining high FABE (fatty acid butyl esters) yields after four cycles. This good performance can be attributed to the basic properties of the Mg species, and simultaneously, to the amphoteric properties of ZnO, which allow both triglycerides and free fatty acids to be converted into esters. Using these catalysts, it is possible to obtain second-generation biodiesel, employing castor oil, a raw material that does not compete with the food industry. In addition, butanol can be produced from renewable biomass.

Un león entre la hacienda. Relaciones entre animales y humanos a partir del estudio de pumas embalsamados en la puna de Jujuy (Argentina); A lion in the flock. Relations between animals and humans from a study of embalmed pumas in the puna of Jujuy (Argentina) Rivet, María Carolina En distintos lugares de los Andes los félidos son calificados como animales predadores, criados por el cerro y a la vez son considerados pastores y protectores del ganado. En Coranzulí en particular (Jujuy, Argentina) en la actualidad se conservan pumas embalsamados en las casas de campo. Estos tienen la característica de poseer atributos materiales que los vinculan con los animales de los rebaños familiares. Los procedimientos técnicos, tanto para su caza como para la preparación del cuerpo, se plantearían como una de las condiciones necesarias para que sus capacidades otrora riesgosas devengan en propiciadoras. Así, una vez embalsamados, se integran a las sociabilidades familiares al participar activamente de la vida cotidiana de los pastores con agencias tales como la capacidad de multiplico, fertilidad y protección no sólo del ganado sino también del grupo familiar.; In different places of the Andes, felids are classified as predators, raised by Coquena, and at the same time, they are considered shepherds and livestock protectors. At present, especially in Coranzulí –Jujuy, Argentina– embalmed pumas are preserved in country houses. They have the distinctive characteristic of having material attributes connecting them to the animals of the flocks. The technical procedures for hunting and preparing the body will be considered one of the necessary conditions for their once risky capabilities to turn into enabling capabilities. Thus, once embalmed, they are integrated into family sociabilities by actively participating in the shepherds’ daily life with agencies such as the ability to multiply, fertility, and protection of livestock and the family group.

Two Late Cretaceous sauropods reveal titanosaurian dispersal across South America Hechenleitner, Esteban Martín; Leuzinger, Léa Sylvia; Martinelli, Agustín Guillermo; Rocher, Sebastian; Fiorelli, Lucas Ernesto; Taborda, Jeremías Ramón Alejandro; Salgado, Leonardo South American titanosaurians have been central to the study of the evolution of Cretaceous sauropod dinosaurs. Despite their remarkable diversity, the fragmentary condition of several taxa and the scarcity of records outside Patagonia and southwestern Brazil have hindered the study of continental-scale paleobiogeographic relationships. We describe two new Late Cretaceous titanosaurians from Quebrada de Santo Domingo (La Rioja, Argentina), which help to fill a gap between these main areas of the continent. Our phylogenetic analysis recovers both new species, and several Brazilian taxa, within Rinconsauria. The data suggest that, towards the end of the Cretaceous, this clade spread throughout southern South America. At the same locality, we discovered numerous accumulations of titanosaurian eggs, likely related to the new taxa. With eggs distributed in three levels along three kilometres, the new site is one of the largest ever found and provides further evidence of nesting site philopatry among Titanosauria.

La vida cotidiana ante el COVID-19: Modos diferenciales de usar y valorar el espacio en el Gran Buenos Aires durante la fase 1 del ASPO, 2020 Marcus, Juliana; Boy, Martín Guillermo; Benitez, Joaquín Andrés; Berardo, Martina Daniela; Felice, Magdalena Inés; Marquez, Agustina; Peralta, María Agustina; Vazquez, Diego Ezequiel La llegada del COVID-19 a la Argentina y la política de Aislamiento Social Preventivo y Obligatorio (ASPO) transformaron los usos y valoraciones en torno al espacio público y privado. Este artículo focaliza en la dimensión espacial de la política sanitaria con el objetivo de analizar cómo las/os habitantes del Gran Buenos Aires (GBA) modificaron su relación con el espacio urbano y el espacio doméstico a partir de la medida del ASPO. Sobre la base de una encuesta online realizada durante las primeras semanas de la Fase 1 de ASPO a residentes del GBA mayores de 18 años con secundario completo o más, se indaga cómo el género, la composición del hogar, la zona geográfica de residencia y la disponibilidad de espacios exteriores en la vivienda inciden en los modos de usar y valorar el espacio público y privado. Entre los resultados, se destaca que la pandemia profundizó desigualdades preexistentes referidas tanto a los usos del espacio doméstico como a las formas de valorar el espacio público, de modo tal que son las mujeres quienes experimentan con mayores cargas laborales y emocionales este período del ASPO.

Colinas Sagradas y Arte Rupestre Escandinavo en Tanum (Suecia) Ceruti, Maria Constanza Situado al sudoeste de Suecia, el paraje de Tanum sobresale mundialmente por la riqueza y variedad de su arte rupestre, que se remonta a la Edad del Bronce Escandinava (1800 a 500 BC) y comprende alrededor de quinientos sitios y más de diez mil motivos grabados sobre superficies rocosas alisadas por glaciares. Los petroglifos revelan aspectos vinculados a la vida social, las experiencias espirituales, las creencias religiosas y los rituales de los antiguos habitantes escandinavos.Uno de los más famosos paneles rupestres se encuentra en Vitlycke, donde se nuclean decenas de motivos incisos que incluyen barcos, discos solares, líneas de puntos, antropomorfos, zoomorfos (renos) y tacitas, entre otros. Se destaca por su plasticidad una escena de duelo fúnebre y una escena con dos personajes abrazados, a los que se denomina coloquialmente Los Amantes. También se distingue un motivo antropomorfo que ha sido interpretado como una deidad del clima. El panel de Litsleby se destaca por el gran tamaño de una representación masculina denominada La Deidad de la Lanza, precursora de la figura del dios nórdico Odín, que constituye el petroglifo antropomorfo más grande de Escandinavia. También aparecen en Litsleby representaciones de barcas, discos solares y pisadas humanas, y en un panel vecino, motivos de jinetes a caballo con escudos y lanzas. La colina de Aspeberget merece el calificativo de montaña sagrada, según la folletería de Tanum. Se encuentra cubierta con motivos incisos que representan barcas y discos solares, escenas de caza, acróbatas a bordo de barcos, entre otros. El presente trabajo analiza e interpreta el arte rupestre de Tanum en relación con la importancia ritual y simbólica de la montaña, en los ritos fúnebres, las prácticas shamánicas y los depósitos de ofrendas votivas en la antigua Escandinavia.

Aportes de la Comisión Central de Señoras Cooperadoras Salesianas Argentinas al financiamiento del proyecto salesiano (Buenos Aires, 1900-1929); Financial contributions of the Comisión Central de Señoras Cooperadoras Salesianas Argentinas to the salesian project (Buenos Aires, 1900-1929) Bracamonte, Lucia Desde fines del siglo XIX, las cooperadoras fueron importantes para conseguir recursos destinados a los proyectos de los salesianos y las Hijas de María Auxiliadora en la Argentina, ya fuera de manera individual o grupal. El objetivo específico de este artículo es analizar los ingresos monetarios de la Comisión Central de Señoras Cooperadoras Salesianas Argentinas entre 1900 y 1929, a fin de identificar la extensión de la asistencia proveída y las fuentes de financiamiento. Desde el análisis de esta entidad, aborda el problema de la relación entre los grupos confesionales femeninos y la intervención estatal en el área asistencial.; Since the end of the 19th Century, the women cooperators were important to obtain financial resources, working individually or in group, for the projects of the salesians and the congregation Hijas de María Auxiliadora in Argentina. The main objective of this paper is to analyze the monetary income of the Comisión Central de Señoras Cooperadoras Salesianas Argentinas in the period 1900-1929, in order to determine the financial sources and the extensionof the assistance provided. With the analysis of this entity, the relation between the confesional feminine groups and the State participation in the social assistance area is studied.

The impact of birth order on behavior in contact team sports: Evidence of rugby teams Delbianco, Fernando Andrés; Fioravanti, Federico; Tohmé, Fernando Abel Several studies have shown that birth order and the sex of siblings may have an influence on individual behavioral traits. In particular, it has been found that second brothers (of older male siblings) tend to have more disciplinary problems. If this is the case, this should also be shown in contact sports. To assess this hypothesis, we use a data set from the South Rugby Union from the region of Bahía Blanca, Argentina, and information obtained by surveying more than 400 players of that league. We find a statistically significant positive relation between being a second-born male rugby player with an older male brother and the number of yellow cards received.

Precariedad, crisis y nuevas miradas sobre el Estado Condiciones de trabajo en el ámbito teatral platense antes y durante la pandemia; Precariedade, crise e novos olhares sobre o Estado Condições de trabalho no teatro de La Plata antes e durante a pandemia; Precariousness, crisis and new views about the State Labor conditions in La Plata theater before and during the pandemic del Mármol, Mariana; Díaz, Juliana En este artículo abordaremos el caso del teatro independiente de la ciudad de La Plata (Buenos Aires, Argentina) con el objetivo de describir y analizar cómo impactó la crisis producida a partir la pandemia del COVID 19 y la medida de Aislamiento Social Preventivo y Obligatorio decretada por el gobierno nacional, en los procesos de identificación de los/as teatristas como trabajadores/as, su organización colectiva para enfrentar la situación de emergencia y sus relaciones de articulación y demanda respecto de los organismos del Estado dedicados a la promoción y protección de la cultura. El trabajo surge como parte de dos investigaciones paralelas y en diálogo que abordan problemas en torno al trabajo artístico en La Plata dentro de los últimos cinco años. Los datos que analizamos en este caso provienen del trabajo de campo realizado antes del ASPO; de observaciones y análisis documental realizadas en este último período, utilizando los dispositivos tecnológicos que tenemos a nuestro alcance y de una encuesta no probabilística impulsada por una organización de Profesores/as de Artes Escénicas Autogestivas recientemente creada en la ciudad, cuyo diseño, procesamiento y análisis de datos estuvo a cargo de una de las autoras de este artículo. Todo esto lo hemos puesto en diálogo con bibliografía afín a la temática laboral en general y como del trabajo artístico en particular.; Neste artigo abordaremos o caso do teatro independente da cidade de La Plata (Buenos Aires, Argentina) com o objetivo de descrever e analisar como a crise produzida a partir da pandemia COVID 19 e a medida de Isolamento Social Preventivo e Obrigatório (ASPO) decretada pelo governo nacional, impactou nos processos de identificação dos atores teatrais como trabalhadores, sua organização coletiva para o enfrentamento da situação de emergência e sua articulação e cobrança de relações com os órgãos do Estado voltados à promoção e proteção do cultura. A obra surge como parte de duas investigações paralelas e em diálogo que abordam problemas em torno do trabalho artístico em La Plata nos últimos cinco anos. Os dados que analisamos, neste caso, vêm do trabalho de campo realizado antes da ASPO; de observações e análises documentais realizadas neste último período, recorrendo aos dispositivos tecnológicos de que dispomos e de um inquérito não probabilístico promovido por uma organização de Professores de Artes Performativas Autogeridas recentemente criada na cidade, cujo desenho, processamento e análise os dados ficaram a cargo de um dos autores deste artigo. Colocamos tudo isso em diálogo com a bibliografia relacionada ao tema do trabalho em geral e do trabalho artístico em particular.; In this article, we will address the case of the independent theater in La Plata (Buenos Aires, Argentina) to describe and analyze how the crisis produced by the COVID 19 pandemic and the Preventive and Obligatory Social Isolation (ASPO) national government decree, impacted on the processes of identifying theaters as workers, their collective organization to face the emergency and their relations of articulation and demand concerning the State agencies dedicated to the promotion and protection of culture. The work emerges as part of two parallel and dialogical investigations that address problems surrounding artistic work in La Plata within the last five years. The data that we analyze in this case comes from the fieldwork carried out before the ASPO; from observations and documentary analysis made in this last period, using the technological devices that we have at our disposal, and from a non-probabilistic survey promoted by an organization of Teachers of Self-Managed Performing Arts recently created in the city, whose design, processing and data analysis were in charge of one of the authors of this article. We have put all this into dialogue with the bibliography related to labor issues in general and artistic work in particular.