The anti-corrosion performance of water-borne paints in long term tests Roselli, Sol Natacha; Romagnoli, Roberto; Deya, Marta Cecilia One of the most inexpensive and effective method to protect steel against corrosion is paints containing active pigments. The traditional way to test these coatings performance is by accelerated tests (exposition to salt spray and/or humidity chambers) and electrochemical tests (corrosion potential, ionic resistance and electrochemical impedance spectroscopy). However, these tests give incomplete information if the results are not correlated to outdoor or service tests. The aim of this work was to evaluate water-borne epoxy anticorrosion paints containing different commercial phosphate pigments. The paints were exposed to a semi-industrial atmosphere for 7 years. Electrochemical tests and accelerated assays were also done in order to find a correlation between laboratory and service tests. The results obtained showed no correlation between those from pigment suspensions and those from painted panels, as it seemed that paint performance is highly dependent on the resin. The pigments zinc iron phosphate and zinc aluminium phosphate performed poorly in pigment suspensions. However, the coatings containing them exhibited the highest ionic resistance, the lowest film capacitance and gave the better results in outdoor tests. Results in outdoor exposure tests correlated with those from impedance measurements.

Resistencia Concomitante Antitumoral: un posible mecanismo de control de las metástasis Ruggiero, Raul Alejandro En mayo de 1978, cuando ingresé en la Sección Leucemia Experimental de la Academia Nacional de Medicina de Buenos Aires, ciertamente no imaginé que, 39 años después, iba a estar en este mismo sitio trabajando y escribiendo este artículo. Para algunos, tal vez para muchos, la permanencia por un tiempo tan prolongado en un mismo lugar de trabajo es un signo de estancamiento.

Effect of operational parameters and Pd/In catalyst in the reduction of nitrate using copper electrode Beltrame, Thiago Favarini; Coelho, Vanessa; Marder, Luciano; Ferreira, Jane Zoppas; Marchesini, Fernanda Albana; Bernardes, Andrea Moura Water with high concentration of nitrate may cause damage to health and to the environment. This study investigated how concentration, current density, flow, pH, the use of Pd/In catalyst and operating mode (constant current density and constant cell potential) have an influence in the electrochemical reduction of nitrate and in the formation of gaseous compounds using copper electrode. Experiments were performed in two-compartment electrolytic cells separated by a cationic membrane with nitrate model solutions prepared as a surrogate of concentrated brines from membrane desalination plants. The results show that the electroreduction process has potential for reduction of nitrate and that it is influenced by the operational conditions. The best conditions found for the treatment - with satisfactory reduction of nitrate, formation of compounds and reproducibility - were at nitrate concentrations of 600 and 1000 mg.L-1, current density of 1.1 mA.cm-2 and without pH control, since in these conditions the production of gaseous compounds is higher than the production of nitrite. When Pd/In catalyst was used, the nitrate reduction was 50% after 6 hours of experiment and the predominant product were gaseous compounds. When compared to the experiment without the catalyst, the arrangement with Pd/In was the most efficient one.

Psychology's contributions to extension: state of the art and calls to action Landini, Fernando Pablo; Olivera Méndez, Alejandra; De Hegedüs, Pedro Several psychosocial processes are embedded in the practice of extension. However, there is no Journal of Extension article that systematically addresses how psychology can contribute to the field. Research conducted recently in Latin America addresses this issue and is applicable to those working in U.S. Cooperative Extension. The aim of this article is to provide an overview of possible contributions psychology can make to U.S. Cooperative Extension. These contributions are presented in the context of seven aspects of extension practice that have strong psychological components. Calls to action are presented as well. Essentially, extensión organizations need to acknowledge the potentiality of psychology and invite psychologists to be part of their programs and research.

Rol de los psicólogos en la extensión rural desde el punto de vista de los extensionistas del noreste argentino; Expected role of psychologists in rural extension in the Argentine Northeast; Papel esperado dos psicólogos na extensão rural no noreste argentino Landini, Fernando Pablo La extensión rural es una práctica compleja que involucra asistencia técnica y asesoría a productores y a otros actores rurales con el fin de que éstos puedan fortalecer su producción y sus dinámicas organizativas y comerciales. Vista así, resulta claro que la extensión rural es una práctica interdisciplinaria que requiere contribuciones de las diferentes ciencias sociales. En consecuencia, puede afirmarse que la psicología posee una importante potencialidad para contribuir a la extensión rural. No obstante, se observa que sus contribuciones al área han sido escasas. Así, buscando comprender el rol potencial de los psicólogos en la extensión rural se realizó una investigación cualitativa, de carácter exploratorio-descriptivo centrada en la realización de 40 entrevistas a extensionistas del noreste argentino. Las entrevistas fueron grabadas y luego analizadas siguiendo los principios de la teoría fundamentada, utilizando el software Atlas Ti. Se concluye que la mayor parte de los extensionistas consideran que la psicología podría contribuir a su labor, aún sin poder clarificar sus especificidades. Se destaca la posibilidad de contribuir al manejo de grupos, a la gestión de conflictos y a la comprensión de los productores.; Rural extension is a complex practice that involves the provision of technical assistance and advisory services to farmers and other rural actors with the aim of improving agricultural production as well as organizational and commercial dynamics. Thus, it is clear that rural extension as an interdisciplinary practice that requires contributions from different social sciences. In consequence, it can be argued that psycholog y has a great potential to contribute to rural extension. Nonetheless, it has been mentioned that its contributions to the topic have been scarce. Aiming to understand the potential role of psychologists in the context of rural extension

GeRNet: A Gene Regulatory Network Tool Dussaut, Julieta Sol; Gallo, Cristian Andrés; Cravero, Fiorella; Martínez, María Jimena; Carballido, Jessica Andrea; Ponzoni, Ignacio Gene regulatory networks (GRNs) are crucial in every process of life since they govern the majority of the molecular processes. Therefore, the task of assembling these networks is highly important. In particular, the so called model-free ap-proaches have an advantage modeling the complexities of dynamic molecular networks, since most of the gene networks are hard to be mapped with accuracy by any other mathematical model. A highly abstract model-free approach, called rule-based approach, offers several advantages performing data-driven analysis; such as the requirement of the least amount of data. They also have an important ability to perform inferences: its simplicity allows the inference of large size mod-els with a higher speed of analysis. However, regarding these techniques, the re-construction of the relational structure of the network is partial, hence incomplete, for an effective biological analysis. This situation motivated us to explore the possibility of hybridizing with other approaches, such as biclustering techniques. This led to incorporate a biclustering tool that finds new relations between these nodes of the GRN. In this work we present a new software, called GeRNeT that integrates the algorithms of GRNCOP2 and BiHEA along a set of tools for interactive visualization, statistical analysis and ontological enrichment of the resulting GRNs. In this regard, results associated with Alzheimer disease datasets are pre-sented that show the usefulness of integrating both bioinformatics tools.

Retazos de anécdotas: pensando nuestras acciones, construyendo nuestra(s) historia(s); Scraps of stories: thinking our actions building our history(s) Anzorena, Claudia Cecilia En este artículo compartimos algunos hitos en la historia de la Campaña Nacional por el Derecho al Aborto Legal, Seguro y Gratuito, como parte de la lucha por el derecho al aborto en Argentina. Relata, desde un saber situado, en qué consiste esta Campaña, sus raíces en el XVIII Encuentro Nacional de Mujeres (Rosario, 2003), la reunión de constitución realizada en Córdoba en 2005 y acciones desarrolladas en Mendoza. Esta Campaña, ha motorizado una gran cantidad de procesos que muestran los avances logrados y los desafíos que se presentan en vistas de la legalización y despenalización (legal y social) del aborto en Argentina; In this article we share some of the highlights in the history of the Campaña Nacional por el Derecho al Aborto Legal, Seguro y Gratuito [National Campaign for the Right to Free, Safe and Legal Abortion] as a part of the struggle for abortion rights in Argentina. We describe – from a situated knowledge - the goals of this Campaña, its origins in the XVIII Encuentro Nacional de Mujeres (Rosario, 2003), the foundational meeting held in Córdoba in 2005 and actions undertaken in Mendoza. This Campaign has propelled a vast quantity of processes that reflect the advances attained and the challenges that must be faced in order to achieve the legalization and the legal and social depenalization of abortion in Argentina.

The Kinase Fyn As a Novel Intermediate in l-DOPA-Induced Dyskinesia in Parkinson’s Disease Sanz Blasco, Sara Isabel; Bordone, Melina Paula; Damianich, Ana; Gomez, Gimena; Bernardi, Maria Alejandra; Isaja, Luciana; Taravini, Irene Rita Eloisa; Hanger, Diane P.; Avale, Maria Elena; Gershanik, Oscar Samuel; Ferrario, Juan Esteban Dopamine replacement therapy with l-DOPA is the treatment of choice for Parkinson’s disease; however, its long-term use is frequently associated with l-DOPA-induced dyskinesia (LID). Many molecules have been implicated in the development of LID, and several of these have been proposed as potential therapeutic targets. However, to date, none of these molecules have demonstrated full clinical efficacy, either because they lie downstream of dopaminergic signaling, or due to adverse side effects. Therefore, discovering new strategies to reduce LID in Parkinson’s disease remains a major challenge. Here, we have explored the tyrosine kinase Fyn, as a novel intermediate molecule in the development of LID. Fyn, a member of the Src kinase family, is located in the postsynaptic density, where it regulates phosphorylation of the NR2B subunit of the N-methyl-d-aspartate (NMDA) receptor in response to dopamine D1 receptor stimulation. We have used Fyn knockout and wild-type mice, lesioned with 6-hydroxydopamine and chronically treated with l-DOPA, to investigate the role of Fyn in the induction of LID. We found that mice lacking Fyn displayed reduced LID, ΔFosB accumulation and NR2B phosphorylation compared to wild-type control mice. Pre-administration of saracatinib (AZD0530), an inhibitor of Fyn activity, also significantly reduced LID in dyskinetic wild-type mice. These results support that Fyn has a critical role in the molecular pathways affected during the development of LID and identify Fyn as a novel potential therapeutic target for the management of dyskinesia in Parkinson’s disease.

Caracterización métrica y morfológica de las cuentas provenientes del área costera norpatagónica: Río Negro, Argentina; Metric and morphometric characterization of beads from coastal North Patagonia, Río Negro, Argentina Cardillo, Marcelo En este trabajo se analizan las cuentas malacológicas y líticas recuperadas en el Golfo San Matías, costa de Río Negro (Argentina), empleando métodos cualitativos y cuantitativos. Con este fin se combinan técnicas de análisis métricos con morfometría geométrica (análisis de Fourier elíptico), con el objetivo de lograr una descripción más detallada de la variabilidad del diseño. Los resultados obtenidos señalan algunas diferencias en la forma y tamaño vinculadas a las materias primas utilizadas para su confección. Por último, se discuten las razones de estas diferencias y en particular, el peso potencial de las propiedades físico mecánicas así como la elección de las formas base empleadas en la elaboración de dichos objetos ornamentales.; In this paper, we analyze shell and stone beads recovered from the San Matías Gulf, Río Negro coast (Argentina), using qualitative and quantitative methods. To this end, metric and geometric morphometric (elliptic Fourier analysis) techniques were combined, thereby achieving a more detailed description of design variability. The results show some differences in the shape and size related to raw materials used in these items manufacture. Finally, the causes of observed differences are discussed, with special focus on the weight of the mechanical and physical properties of raw materials used in the preparation of such ornamental objects.

Tankyrase inhibition regulates corpus luteum development and luteal function in gonadotropin-treated rats Accialini, Paula Lucia; Irusta, Griselda; Bechis, Andrés; Bas, Diana Ester; Parborell, Maria Fernanda Agustina; Abramovich, Dalhia Nurit; Tesone, Marta Tankyrases are physiological regulators of Axin, a protein involved in several cellular processes, including Wnt signaling. Here, we investigated the effect of a specific Tankyrase inhibitor (XAV939) in follicular-luteal dynamics, and its possible relationship with ovarian vascular development. Studies were designed to analyze the effect of intrabursa administration of XAV939 in gonadotropin-treated prepubertal rats. In particular, we examined follicle and corpus luteum development, steroidogenesis, angiogenic markers, and apoptotic parameters. We found that in vivo inhibition of Wnt signaling impaired corpus luteum development, with a decrease in the number of corpora lutea balanced by a high number of cysts; decreased circulating progesterone levels, likely due to a decrease in Steroidogenic acute regulatory protein content in the corpus luteum; and increased pro-apoptotic parameters. In addition, Extracellular signal-regulated kinase phosphorylation, Vascular endothelium growth factor 120 content, and endothelial cell area were diminished in corpora lutea of inhibitor-treated ovaries. Thus, Wnt/β-catenin signaling appears to participate in the regulation of corpus luteum development and luteal cell function.

Volatile organic compounds from the interaction between Fusarium verticillioides and maize kernels as a natural repellents of Sitophilus zeamais Usseglio, Virginia Lara; Pizzolitto, Romina Paola; Rodriguez, Carolina; Zunino, María Paula; Zygadlo, Julio Alberto; Areco, Vanessa Andrea; Dambolena, José Sebastián Maize kernels are exposed to Sitophilus zeamais attack and Fusarium verticillioides infestation duringstorage, which can result in product deterioration and economic losses. The objective of this study was toevaluate the involvement of the Volatile Organic Compounds (VOCs) emitted by the fungi-corn system ingrain-insect interactions. Volatiles emitted by healthy maize kernels were different from those emittedby fungal infected kernels, with the latter being enriched by alcohols, ketones and sesquiterpenes, whichwere considered early indicators of fungal contamination. The results demonstrated that the kernelsexposed to the fungal VOCs and their pure compounds (1-octen-3-ol and 3-octanol) were less attractiveand less damaged by S. zeamais than controls. In addition to compound adsorption, other processes mayhave caused the protective effect of exposed kernels against insect damage. This is the first contributionof the role of the fungal volatiles on the behavior of S. zeamais, and could provide an importantcontribution to the conservation of stored grains and pest management and an early indicator of fungalcontamination.

Strongly misaligned triple system in SR 24 revealed by ALMA Fernandez Lopez, Manuel; Zapata, L. A.; Gabbasov, R. We report the detection of the 1.3 mm continuum and the molecular emission of the disks of the young triple system SR24 by analyzing ALMA (The Atacama Large Millimeter/Submillimter Array) subarcsecond archival observations. We estimate the mass of the disks (0.025 M ⊙ and 4 × 10‑5 M ⊕ for SR24S and SR24N, respectively) and the dynamical mass of the protostars (1.5 M ⊙ and 1.1 M ⊙). A kinematic model of the SR24S disk to fit its C18O (2-1) emission allows us to develop an observational method to determine the tilt of a rotating and accreting disk. We derive the size, inclination, position angle, and sense of rotation of each disk, finding that they are strongly misaligned (108^circ ) and possibly rotate in opposite directions as seen from Earth, in projection. We compare the ALMA observations with 12CO SMA archival observations, which are more sensitive to extended structures. We find three extended structures and estimate their masses: a molecular bridge joining the disks of the system, a molecular gas reservoir associated with SR24N, and a gas streamer associated with SR24S. Finally, we discuss the possible origin of the misaligned SR24 system, concluding that a closer inspection of the northern gas reservoir is needed to better understand it. 

Spinal cord injury drives chronic brain changes Jure, Ignacio; Labombarda, Maria Florencia Only a few studies have considered changes in brain structures other than sensory and motor cortex after spinal cord injury, although cognitive impairments have been reported in these patients. Spinal cord injury results in chronic brain neuroinflammation with consequent neurodegeneration and cognitive decline in rodents. Regarding the hippocampus, neurogenesis is reduced and reactive gliosis increased. These long-term abnormalities could explain behavioral impairments exhibited in humans patients suffering from spinal cord trauma.

Un estudio de la circulación de bienes pecuarios en el Río de la Plata, Montevideo 1784-1797; An study of the livestock goods movement in the La Plata river, Montevideo, 1784-1797 Biangardi, Nicolás Alberto El artículo presenta un análisis de la circulación de bienes pecuarios en una zona del Río de la Plata. A partir de la información mensual que proporcionan las fuentes consultadas se estudia la introducción de cueros, sebo y grasa a Montevideo entre los años 1784 y 1797. El trabajo muestra las posibilidades del estudio de la circulación regional de estos bienes analizando el desempeño y la estacionalidad de esos flujos mostrando indicios sobre las dos actividades que los producían (las vaquerías corambreras y la ganadería), la comercialización en la campaña, el transporte, el almacenamiento en la ciudad y su posterior destino. De esta manera, se brinda un panorama completo para un período en el cuál estas actividades tuvieron una importante expansión gracias a la presencia de una demanda constante.; This paper analyses the movement of live-stock goods in an area of the La Plata River. The introduction of leather, tallow and fat in Montevideo in 1784-1797 is studied from the monthly information provided by the sources consulted. The work shows the possibilities of studying the regional movement of these goods by analyzing the performance and seasonal variation of these flows. At the same time, it shows evidence of the two activities, wild cattle hunting for leather (vaquerías corambreras) and cattle raising, that caused the former, as well as the commercialization in the countryside, transportation, storage in the town and subsequent destination. In this way, this paper is a complete overview of a period when these activities had an important expansion thanks to a constant demand.

Peeking into the bleak midwinter: Investigating nonbreeding strategies of Gentoo Penguins using a camera network; Coup d'œil au milieu d'un hiver rude – examiner les stratégies non reproductives chez Pygoscelis papua à l'aide d'un réseau de caméras Black, Caitlin; Raya Rey, Andrea Nélida; Hart, Tom When monitoring species with extensive ranges in harsh climates, comprehensive studies across a species' range are both logistically and technically challenging and therefore rare. Such scarcity in data collection is particularly true in the polar regions where sea ice and weather constraints prevent widespread access to sites for much of the year, specifically during winter. Penguins (Spheniscidae) show large variations in winter strategies with many species migrating long distances while others are distinctly sedentary, remaining at the colony year-round. However, in some species, their attendance at the breeding site during the nonbreeding winter period depends greatly on the colony location and environmental factors. Here we aim to examine fluctuations in winter attendance at the breeding site in Gentoo Penguins (Pygoscelis papua) along a latitudinal gradient of 7 sites, ranging from Martillo Island, a colony in Argentina, to Petermann Island, a colony located toward the southern edge of the species' range on the Western Antarctic Peninsula. We use an established network of cameras to observe winter populations of penguins across a large latitudinal gradient. This study provides the first evidence of across-year variation in Gentoo Penguin nonbreeding attendance at the breeding site. We found that both temporal and spatial factors drive winter attendance in this species with distinct patterns between years and colony locations, particularly at the edges of its range. Additionally, environmental and temporal factors, including sea ice extent directly offshore and photoperiod, appear to dictate Gentoo Penguin winter attendance across their range. As Gentoo Penguins are neither sedentary nor migratory during the nonbreeding period, understanding patterns in winter site occupation across time and space provides insight into half of the species' annual cycle and has important implications in the face of changes in climate, direct human disturbance, and fisheries activities.; Lors du suivi d'espèces comportant des aires de répartition vastes dans des climats rigoureux, les études approfondies sur toute l'aire de répartition de l'espèce représentent un défi logistique et technique, et sont par conséquent rares. Une telle rareté de collecte de données est particulièrement vraie dans les régions polaires, où la glace de mer et les contraintes météorologiques empêchent d'accéder aisément aux sites une bonne partie de l'année, particulièrement en hiver. Les manchots (Spheniscidae) présentent une grande variation dans les stratégies hivernales, plusieurs espèces migrant sur de longues distances alors que d'autres sont distinctement sédentaires et restent dans la colonie toute l'année. Toutefois, chez certaines espèces, la fréquentation du site de reproduction au cours de la période hivernale non reproductive dépend beaucoup de l'emplacement de la colonie et de facteurs environnementaux. Notre étude vise à examiner les fluctuations de la fréquentation hivernale au site de reproduction de Pygoscelis papua le long d'un gradient latitudinal de sept sites, allant de l'île Martillo, une colonie en Argentine, à l'île Petermann, une colonie située près de la limite sud de l'aire de répartition de l'espèce, sur la péninsule antarctique occidentale. Nous utilisons un réseau de caméras déjà en place pour observer les populations hivernales de manchots le long d'un important gradient latitudinal. Cette étude fournit les premières preuves d'une variation interannuelle de la fréquentation du site de reproduction par cette espèce en dehors de la période de reproduction. Nous avons trouvé que des facteurs temporels et spatiaux gouvernent la fréquentation hivernale chez cette espèce avec des patrons distincts entre les années et l'emplacement des colonies, particulièrement aux confins de leur aire de répartition. De plus, les facteurs environnementaux et temporels, dont l'étendue de la glace de mer côtière et la photopériode, semblent dicter sa fréquentation hivernale à travers l'aire de répartition. Puisque P. papua n'est ni sédentaire ni migrateur en dehors de la période de reproduction, la compréhension des patrons d'occupation hivernale du site dans le temps et l'espace donne un aperçu de la moitié du cycle annuel de l'espèce et a d'importantes implications face aux changements climatiques, au dérangement humain direct et aux activités de pêche.

Crisis Ambiental y Ordenamiento Territorial de los Bosques Nativos en la Provincia de Salta: entre la Política Ambiental Sostenible y la Gestión Territorial Participativa; Environmental Crisis and Territorial Legal System of the Native Forests in the Salta Province: between Sustainable Environmental Politics and Participative Territorial Management Casalderrey Zapata, Maria Constanza En este trabajo indago sobre el potencial que reviste la gestión territorial en tanto instrumento de planificación integral para una política ambiental que propenda a la sostenibilidad y a la justicia social. Lo hago a partir del análisis de un caso judicial que se desarrolló alrededor de la implementación de la Ley nacional 26.331, de “bosques nativos”, que desde el año 2007 propone al ordenamiento territorial de los bosques nativos como el instrumento para regular los usos a los que estos deben destinarse. La ley establece una serie de criterios comunes de ‘sustentabilidad’ que deben guiar el ordenamiento que cada provincia debe llevar a cabo, agregando la obligatoriedad de incluir instancias de participación social. Entendiendo el proceso del ordenamiento como uno de planificación integral a partir de la cual armonizar entre los fines de la política (objetivos de la ley) y los medios para implementarla (instrumentos) me pregunto por los límites entre los mismos y sobre cómo se condicionan mutuamente: cómo la participación social logra influir sobre los criterios ‘sostenibles’ previamente establecidos y viceversa. El caso manifiesta que mientras la participación permanezca atada a un sentido prefijado de sostenibilidad, la política ambiental no propenderá a la equidad social.; In this paper I inquire into the potential of territorial management as an instrument of comprehensive planning for an environmental policy that will lead to sustainability and social justice. To do this I focus on the analysis of a court case that developed around the implementation of the National Law 26,331, of "native forests". Since its sanction in 2007 it established Lan-use Planning of Native Forests as an instrument to regulate its proper uses. The law sets up common 'sustainable' criteria that should guide the Land-use Planning that each province should carry out, adding the mandatory inclusion of social participation mechanisms. From understanding land-use planning as one of comprehensive planning which aims to harmonize the policy goals (objectives of the Act) with the means to implement it (instruments), I wonder about the boundaries between them and how they

Carnívoros en el Sudoeste de la provincia de Buenos Aires: ecología y conflictos con los ganaderos Caruso, Nicolás; Luengos Vidal, Estela Maris; Lucherini, Mauro; Guerisoli, Maria de Las Mercedes; Martinez, Sabrina; Casanave, Emma Beatriz El rol fundamental que cumplen los carnívoros silvestres en los ecosistemas está siendo amenazado en todo el mundo por la persecución por parte del hombre y por la alteración del hábitat. El sudoeste bonaerense es una región altamente modificada por el avance de la frontera agrícolo-ganadera y en la cual, en los últimos años, han aumentado los registros de depredación de animales domésticos por parte de los carnívoros. El estudio en paralelo de la ecología de estas especies y sus conflictos con la producción ganadera es clave para encontrar soluciones que minimicen el impacto de los carnívoros sobre la economía regional sin perjudicar su papel ecológico. En los partidos de Villarino y Patagones se colocaron cámaras trampas para estudiar los factores que afectan la distribución de las cuatro especies de carnívoros más comunes (puma, Puma concolor; gato montés, Leopardus geoffroyi; zorro pampeano, Pseudalopex gymnocercus; zorrino, Conepatus chinga) y se realizaron entrevistas semiestructuradas y talleres participativos para analizar el conflicto humano-carnívoros. Entre los años 2008 y 2015, se monitorearon 49 sitios a través del trampeo fotográfico y se caracterizó el área de estudio en 12 variables relacionadas con el grado de perturbación antrópica, la composición del paisaje y su nivel de fragmentación. Se completaron además 193 entrevistas y cuatro talleres. Para las entrevistas se utilizó un cuestionario focalizado en aspectos socioeconómicos y de manejo de los campos, y en los talleres se buscó un consenso grupal respecto de la relevancia de los diferentes factores que afectarían el conflicto humano-carnívoros. La aplicación de modelos lineales generalizados a los datos de trampeo fotográfico determinó que el uso del hábitat de los carnívoros sería influenciado por la alteración de los ambientes naturales de la región. El zorro y el zorrino fueron las especies con una mayor adaptabilidad, mientras que el puma y el gato montés serían más sensibles a las modificaciones del ecosistema. El puma evitaría los sitios altamente modificados, prefiriendo aquellos naturales. El 47% y 55% de los entrevistados reportaron pérdidas por el puma y el zorro, respectivamente, en el transcurso del año anterior y el 95,3% consideró los carnívoros perjudiciales para las actividades productivas regionales. Los participantes de los talleres identificaron un posible aumento de los conflictos relacionado con la disminución de personas en los campos. Si bien la caza ilegal de algunas especies es la respuesta más común, los productores demostraron interés y voluntad de aplicar medidas de mitigación. Estudiar y comprender las dinámicas socioeconómicas que están ocurriendo en el sudoeste bonaerense es fundamental para la mitigación de estos conflictos. Sin embargo, para una solución a largo plazo se requiere de la participación en conjunto de las comunidades y de diferentes actores institucionales.; The key role that wild carnivores play in ecosystems is threatened by human persecution and habitat alteration worldwide. The SW of Buenos Aires province, Argentina, is a region strongly modified by the spread of agriculture and where, in the last years, there has been an increase in carnivore predation on livestock. The simultaneous study of the ecology of carnivores and of their conflicts with ranching activities is essential to find solution that can minimize the impact of these species on the regional economy while maintaining their ecological role. We deployed camera traps in the Buenos Aires counties of Villarino and Patagones to study the factors affecting the distribution of the four most common species (puma, Puma concolor; Geoffroy’s cat, Leopardus geoffroyi; Pampas fox, Pseudalopex gymnocercus; Molina’s hog-nosed skunk, Conepatus chinga). Semi-structured interviews to local ranchers and participative workshops were carried out to analyze human-carnivore conflicts. From 2008 to 2015, we surveyed 49 camera trap sites and characterized the study area through 12 variables related to anthropogenic alterations and to landscape composition and fragmentation. We also completed 193 interviews and four workshops. For the interviews we used a questionnaire focused on collecting information on socio-economic aspects of ranchers and ranch management, while in the workshops we searched for a common agreement on the relevance of the potential factors affecting human-carnivore conflicts. The application of Generalized Linear Models to camera trapping data indicated that the use of habitat by carnivores in the region is affected by the alterations of natural habitats. The Pampas fox and skunk were the species with greater adaptability, whereas the puma and Geoffroy’s cat appeared to be more sensitive to ecosystem modifications. Pumas avoided intensively modified sites and preferred natural patches. Losses on livestock by pumas and Pampas foxes during the previous year were reported by 47% and 55% of respondents, respectively, and 93% of ranchers considered carnivores as detrimental to regional production. Workshop participants identified a possible increase in conflicts associated to the decrease in human presence in ranchlands. Although illegal hunting of carnivores appears to be the most common response to conflicts, ranchers showed interest and motivation to explore mitigation measures. The comprehension of the socio-economic dynamics occurring in the SW of Buenos Aires is extremely urgent for conflict mitigation. Nevertheless, long term solutions will require the engagement of local communities and different government institutions.

En el culo del mundo: festivales, autogestión y sexualidad en la pospornografía producida en Argentina; In the ass of the world: festivals, self-management and sexuality in postpornography produced in Argentina Milano, Laura Vanesa Este trabajo indaga en las prácticas artísticas de la pospornografía producidas en Argentina y en los modos de producción que se generaron en torno a ellas: procesos de producción autogestiva, cooperativa y colectiva y de creación de espacios nuevos de socialización y resistencia. Entendiendo el posporno como un entrecruzamiento entre arte y activismos de la disidencia sexual, me interesa problematizar estas modalidades del “hacer posporno” tomando como caso las experiencias de los festivales y jornadas realizadas en las ciudades de Buenos Aires y La Plata.; This work investigates the artistic practices of postpornography produced in Argentina and the modes of production that were generated around them: processes of self-management, cooperative, and creation of new spaces of socialization and resistance. Understanding the postpornography as a cross between art and activism of sexual dissidence, I am interested in problematizing these modalities of "doing post-porn" in the contemporary Argentine context, taking as a case the experiences of festivals and workshops held in the cities of Buenos Aires and La Plata.

El discurso pedagógico sobre el arte del actor: análisis de las nociones de sentido y lenguaje en la propuesta de C. Stanislavski; The pedagogical discourse about acting: a study of the concepts of meaning and language in C. Stanisavski´s texts Zucchi, Mariano Nicolás En términos generales, los discursos pedagógicos sobre la actuación no se ocupan de brindar herramientas específicas que ayuden a los actores a identificar la manera particular en que los textos dramáticos construyen sentido. Frente a este problema, este trabajo se propone como un primer intento de explicar las causas de este fenómeno, en particular, mediante el análisis de la propuesta de C. Stanislavski, primer autor en desarrollar de forma sistemática una pedagogía para el intérprete escénico. Enmarcados en el Enfoque dialógico de la argumentación y la polifonía (García Negroni, 2009, 2015), observaremos que el hecho de que el discurso del director ruso no proponga un método sistemático de análisis del texto teatral es una consecuencia directa de que entre sus presupuestos teóricos se encuentre una concepción referencial del significado lingüístico. Para probar nuestra hipótesis haremos un estudio de las nociones de subtexto, circunstancias dadas, objetivo, línea continua de acción, superobjetivo, pausas, entonación y acentuación.; In general terms, the pedagocial discourses of acting don´t provide specific tools that helps actors to identify the particular way in which the drama builts meaning. To face this problem, this article tries to explain the causes of this situation, particularly, by the analysis of Stanislavski´s theory, the first one that propose a systematic pedagogy for the stage performer. Using the Enfoque dialógico de la argumentación y la polifonía (García Negroni, 2009, 2015) as a framework, we will see that the fact that the discourse of the Russian stage director doesn´t propose a method of drama analysis is a direct consequence of the referential conception of the linguistic meaning that lies beneath his theory. To prove our hypothesis, we will study the notions of subtext, given circumstances, objectives (tasks), unbroken line of action, supertask, pauses, intonation and accentuation.

Del cometa a tu vaso Piovano, Eduardo Luis El nuestro es el único planeta del sistema solar que posee la mayor parte de su superficie cubierta por agua en estado líquido. En el medio terrestre ésta se desplaza dentro de cuencas hidrológicas que constituyen una fuente de gran riqueza para el desarrollo de la vida. El agua circula sin reconocer “límites políticos”, por eso, su manejo debe ser realizado de manera conjunta entre los dife- rentes países, provincias o comunidades que se encuentran dentro de un misma cuenca.