Una defensa sistemática del pluralismo lógico Tajer, Diego En este trabajo, realizo una defensa del pluralismo lógico en una de sus versiones. En la primera parte, considero distintas formulaciones del pluralismo, analizo sus fallas respectivas e introduzco la versión que defenderé, que es la de Beall y Restall (1999, 2000, 2006). En la segunda parte, desarrollo las objeciones que cuatro monistas (Quine, Read, Priest y Field) hicieron al pluralismo y respondo a cada una de ellas. En particular, muestro que no afectan la posición de Beall y Restall.; In this paper, I defend one version of logical pluralism. In the first part, I consider different formulations of pluralism, I analyze their shortcomings, and finally I introduce the version I will defend, which is Beall and Restall’s pluralism (1999, 2000, 2006). In the second part, I present the main objections of four monists (Quine, Read, Priest, and Field) and then I answer to each one of them. In particular, I show that these objections do not affect Beall and Restall’s position.

Arquitectura moderna: Autores y producción en Mendoza Argentina (1930-1970); Modernist architecture: Architects and works in Mendoza - Argentina (1930-1970) Raffa, Cecilia Beatriz; Cirvini, Silvia Augusta Este trabajo propone trazar un panorama general del desarrollo de la Arquitectura Moderna en Mendoza entre 1930 y 1970, a través de los autores y obras más significativos. La producción arquitectónica lograda en el período, en el presente de valor patrimonial, no cuenta con acciones gubernamentales ni legislación de protección. Esto se debe a dos razones concurrentes: La primera, desde el imaginario social el recorte temporal de lo patrimonial finaliza con la arquitectura de los años ’20 del siglo pasado. La segunda razón, la estética y la vigencia funcional de estas obras impiden poner la distancia crítica que requiere toda mirada histórica, aún más desde lo cultural. Vamos a revisar algunos autores a partir de sus trayectorias y su producción arquitectónica, con el objetivo de descubrir las singularidades de la producción local, haciendo aportes para la valoración de estos bienes y por ende para su patrimonialización.; This paper proposes to trace an overview of the development of modern architecture in Mendoza between 1930 and 1970, following the most relevant architects and their works. No government measures or legislation have ever been implemented to protect the architectural heritage of this period. There are two parallel causes for this inaction: firstly in the collective imagination, heritage as a concept pertains to any historical period up to the 1920s. Secondly, the possibility of achieving the objectivity necessary to achieve a historical perspective of modern architecture is hampered by the works’ ongoing aesthetic and functional relevance. A cultural perspective is still more difficult to achieve. We review the trajectories and buildings of a number of architects in order to discover their local singularities, thus contributing to an appreciation of these works of architecture and their subsequent protection as part of our heritage.

Formalizing dialectical explanation support for argument-based reasoning in knowledge-based systems García, Alejandro Javier; Chesñevar, Carlos Iván; Rotstein, Nicolas Daniel; Simari, Guillermo Ricardo The concept of explanation has received attention from different areas in Computer Science, particularly in the knowledge-based systems and expert systems communities. At the same time, argumentation has evolved as a new paradigm for conceptualizing commonsense reasoning, resulting in the formalization of different argumentation frameworks and the development of several real-world argument-based applications. Although the notions of explanation and argument for a claim share many common elements in knowledge-based systems their interrelationships have not yet been formally studied in the context of the current argumentation research in Artificial Intelligence. This article explores these ideas by providing a new perspective on how to formalize dialectical explanation support for argument-based reasoning. To do this, we propose a formalization of explanations for abstract argumentation frameworks with dialectical constraints where different emerging properties are studied and analyzed. As a concrete example of the formalism introduced we show how it can be fleshed out in an implemented rule-based argumentation system.

Acciones y estrategias en lo público: algunas reflexiones sobre (y en) la catástrofe López, Matías David En este trabajo se parte de analizar ciertas políticas -y omisiones- que se pueden entender como detonantes y causantes de las inundaciones que se produjeron el 2 de abril en la ciudad de La Plata. Para luego abordar ciertas estrategias construidas desde la sociedad civil que buscaron hacer frente a una situación de catástrofe como los hechos ocurridos y ensanchar el campo de lo público. Se construyen para esto tres categorías analíticas: estrategias de sobrevivencia, de acción política colectiva y de (re)presentación. La intención es generar un artículo de registro abierto entre el ensayo y la investigación de análisis de material empírico (material y construcción viva, sentida y afectada), buscando de conjunto una reflexión crítica y argumentativa, que tiene como punto de partida y se inserta una situación dramática vivenciada en la ciudad. En este sentido, es un trabajo de comprensión que necesariamente precisa conectarse con otras reflexiones para completarse, intervenir y aportar desde el campo de la comunicación social y las ciencias sociales.

Effect of gamma irradiation and storage time on microbial growth and physicochemical characteristics of pumpkin (Cucurbita Moschata Duchesne ex Poiret) puree Gliemmo, María Fernanda; Latorre, Maria Emilia; Narvaiz, Patricia; Campos, Carmen Adriana; Gerschenson, Lia Noemi The effect of gamma irradiation (0–2 kGy) and storage time (0–28 days) on microbial growth and physicochemical characteristics of a packed pumpkin puree was studied. For that purpose, a factorial design was applied. The puree contained potassium sorbate, glucose and vanillin was stored at 25 ℃. Gamma irradiation diminished and storage time increased microbial growth. A synergistic effect between both variables on microbial growth was observed. Storage time decreased pH and color of purees. Sorbate content decreased with storage time and gamma irradiation. Mathematical models of microbial growth generated by the factorial design allowed estimating that a puree absorbing 1.63 kGy would have a shelf-life of 4 days. In order to improve this time, some changes in the applied hurdles were assayed. These included a thermal treatment before irradiation, a reduction of irradiation dose to 0.75 kGy and a decrease in storage temperature at 20 ℃. As a result, the shelf-life of purees increased to 28 days.

Mesoporous Thin Films of TiO2 on Attenuated Total Reflection Crystals. An In Situ Fourier-Transform Infrared Study of the Kinetics and Equilibrium of Adsorption and Photocatalysis of Carboxylic Acids Roncaroli, Federico; Martínez, Eduardo David; Soler Illia, Galo Juan de Avila Arturo; Blesa, Miguel Angel Highly organized titanium dioxide (TiO2) mesoporous thin films were deposited directly on silicon attenuated total reflection (ATR) crystals by dip-coating, submitted to two different thermal treatments, and characterized by ellipsometric porosimetry analysis (EPA), X-ray diffraction, and electron microscopy. The kinetics and equilibrium of the adsorption of oxalic acid as well as their photocatalytic efficiency were studied in situ by Fourier transformed infrared spectroscopy (FTIR-ATR). The spectral properties and the Langmuir constants of the detected surface complexes resemble those previously found in TiO2 Degussa P25 and anatase particulate films. The photocatalytic activity for the oxidation of oxalic acid was found to be similar to the corresponding one for Degussa P25. The kinetics of adsorption of oxalic acid follows a pseudo-first-order behavior. The pseudo-first-order rate constants show a linear relationship with the oxalic acid concentration. Adsorption (ka) and desorption rate constants (kd) were obtained. The ka values were analyzed in relation to the pore and neck sizes, accessible volume, thickness, and film area. The film area affects strongly the kinetic parameters, while no clear dependence on the thickness value was observed. When the film area is taken into account, adsorption rates on mesoporous films are appreciably larger than on particulate films. Thus, enhanced adsorption rates make mesoporous films better candidates as photocatalysts. The difference is interpreted in terms of a reduced tortousity in the ordered mesoporous films, probably due to their regular spatial order. It is also concluded that sensors and catalysts based on mesoporous films should respond faster than those based on conventional films.

Acerca de los argumentos del cambio educativo: La crisis de la racionalidad pedagógica; On the arguments of education change: The Crisis of Pedagogic Rationality Skliar, Carlos Bernardo La educación puede ser entendida como la perdurabilidad en el tiempo, y el sostén en su estructura e instituciones, de una serie de argumentos entendidos como habituales y naturales. Entre ellos: la lógica de la explicación, el llenado del otro, la puesta en el futuro de los ideales educativos y la comprensión asimilatoria de las diferencias. Su carácter de racionalidad pasada y presente no hace más que prometer un único argumento definitivo que vuelve a instalar con más fuerza su propia razón de ser: el cambio educativo.; Education can be understood as the durability over time, and support in its structure and institutions, of a series of arguments understood as natural and normal. Among them: the logic of the explanation, the filling of the other, to put in the future educational ideals and assimilatory understanding of differences. His character of past and present rationality, merely promise a definitive argument that only becomes harder to install his own rationale: educational change.; L’éducation peut être comprise comme la durabilité dans le temps, et le soutien dans sa structure et les institutions, d’une série d’arguments entendus comme habituels et normaux. Parmi eux: la logique de l’explication, le remplissage de l’autre, l’avenir des idéaux éducatifs et la compréhension assimilative des différences. Son caractère de rationalité passé et le présente, seulement promets un argument définitif qu’installe une et autre fois sa propre raison d’être: le changement en éducation.

El proceso de objetivación del tiempo fenomenológico: un estudio acerca de la constitución del tiempo objetivo en términos husserlianos Kretschel, Verónica Partiendo desde una perspectiva fenomenológica, se investiga aquí el denominado tiempo objetivo desde el punto de vista de las operaciones que lo constituyen en la inmanencia de la conciencia. La investigación husserliana analiza el proceso de objetivación del tiempo inmanente sobre la base de una conciencia subjetiva individual. Este abordaje, que podríamos considerar solipsista, intenta ser complementado con un estudio del tiempo del mundo como tiempo intersubjetivo.; From a phenomenological point of view, the objective time is explained as a result of the operations of the constitutive process of the inmanent timeconsciousness. Husserlian research analyses the inmanent time objectivation process focusing on an individual subjective consciousness. Our intention is to try to complete this approach, that we can call solipsistic, by a study of the time of the world as an intersubjective time.

Conflictos políticos y justicia durante la crisis del orden federal en Entre Ríos, 1872-1874 Schmit, Roberto Daniel; Alabart, Mónica Desde mitad del siglo XIX la constitución y emergencia del nuevo orden nacional comenzaría a tensionar y cambiar las tradiciones rioplatenses poscoloniales, produciendo desde el nuevo pacto constitucional una serie muy significativa de transformaciones que impactarían de lleno en el terreno social, político y jurídico. En este trabajo nos proponemos abordar algunos aspectos de aquellas continuidades y mutaciones sobre el poder político entrerriano tras la crisis del federalismo urquicista, a través de una serie de actos de violencia y sediciones sucedidas al interior de la provincia.; From mid-nineteenth century the emergence of the new constitution and national level and stress begin to change traditions postcolonial, resulting from the new constitutional arrangement a very significant series of changes that would impact fully in the social, political and legal. In this paper we propose to address some aspects of those continuities and mutations political power after crisis entrerriano urquicista federalism, through a series of acts of violence and sedition which have occurred within the province.

Hacia una reinterpretación del Museo Imaginario: fotografía y materialidad de la obra de arte; Towards a reinterpretation of the the museum without walls: photography and the materiality of the artwork Diez, Agustin Ricardo El presente artículo tiene como objetivo proponer una lectura contemporánea de El Museo Imaginario (1947, 1951, 1965) de André Malraux. De este modo, plantearemos un abordaje que se diferencie de las interpretaciones tradicionales que ha tenido este texto como antecedente de los procesos de circulación de la imagen artística a través de la fotografía digital en Internet. Puntualmente, partiendo del análisis de las consideraciones del cuerpo de la obra de arte en el trabajo de Malraux, propondremos una doble hipótesis sobre su perspectiva: en primer lugar, la transformación que la fotografía operó en la reproducción de obras de arte no puede desvincularse, para Malraux, del cambio radical que tuvo lugar en la pintura moderna durante las últimas décadas del siglo XIX; en segundo, estos cambios no se circunscribieron al problema de la imagen y su circulación sino que implicaron modificaciones radicales en las nociones de cuerpo y materialidad de la obra de arte.; The aim of this article is to propose a contemporary reading of The Museum without Walls (1947, 1951,1965) written by André Malraux. We support an approach that differs from the traditional interpretations this text has had as a precursor of the circulation of the artistic image through digital photography on the Internet. Starting with an analysis of the body of the work of art on Malraux´s text, we propose two hypotheses about his perspective. Firstly, the photographic transformation developed in the reproduction of artworks is inseparable from the radical change that took place in Modern Painting during the last decades of the nineteenth century. Secondly, these modifications were not limited to the problem of image and circulation but involved radical changes in the notions of body and materiality of the artwork.

Anticoncepción y aborto: reflexiones en torno a las políticas de sexualidad y programas de salud reproductiva en Argentina y Brasil; Contraception and abortion: reflections on sexuality policies and reproductive health programs in Argentina and Brazil del Rio Fortuna, Cynthia Anahi El presente artículo analiza el lugar del aborto en las discusiones en torno a las transformaciones jurídicas y programáticas que se dieron en el proceso de construcción de las políticas públicas en materia de salud sexual y reproductiva, con creciente reconocimiento de los derechos sexuales y reproductivos, en Brasil y Argentina. Luego, el análisis se enfoca en las rutinas profesionales en torno al aborto y la anticoncepción en Argentina, a partir de la relectura del material de campo de una investigación etnográfica propia en un servicio hospitalario de la ciudad de Buenos Aires devenido “referente” para prácticas controvertidas en salud reproductiva. El aborto se manifiesta como un significante potente y omnipresente a la vez que con relativa elasticidad semántica. Su regulación política y, en relación con él, el despliegue de actividades de promoción y prescripción de anticoncepción, se revela como un dispositivo de control social de los cuerpos y las subjetividades de las mujeres.; This article analyzes abortion' place in debates around legal and programmatic changes during process of construction of sexual and reproductive public policies in Brazil and Argentine, in a context of growing acknowledgment of sexual and reproductive rights. Afterwards, from the review of field work material in a hospital –which is “a reference” for controversial practices in reproductive health– the analysis focuses on professional routines about abortion and contraception in Buenos Aires, Argentine. Abortion shows itself as a powerful and omnipresent significant although with a relative semantic flexibility. Its political regulation –and, related to it, the implementation of promotion and contraception methods' prescription– appears as a social control device of women's bodies and subjectivities.

Un campo de estudio e intervención en tiempo futuro Elizalde, Silvia Lorena; Gutierrez, Maria Alicia Se trata de la Introducción crítica al Dossier "Comunicación, Géneros y Sexualidades" correspondiente al Nº 5 de la revista Avatares de la Comunicación y la Cultura, publicación con referato de la carrera de Ciencias de la Comunicación. Facultad de Ciencias Sociales (UBA).

Tafonomía del sitio de nidificación de neosaurópodos de Sanagasta (La Rioja, Argentina): ejemplo de preservación excepcional en un paleoambiente hidrotermal del Cretácico; Taphonomy of the neosauropod nesting site from Sanagasta (La Rioja, Argentina): exceptional preservation in a Cretaceous hydrothermal paleoenvironment Fiorelli, Lucas Ernesto; Grellet-tinner, Gerald; Argañaraz, Eloisa; Salgado, Leonardo El sitio de nidificación de Sanagasta (Cretácico), La Rioja, Argentina, resolvió aspectos sobre la reproducción de los neosaurópodos, evidenciando comportamientos coloniales, filopatría, y su reproducción oportunista dependiente de su paleoambiente termal. Aquí describimos la tafonomía del sitio determinando sus patrones bioestratinómicos y diagenéticos. El agrupamiento oológico 3D está bien preservado, sugiriendo asociaciones autóctonas representadas por oviposiciones in situ, sin estructura de nido. El nivel portador presenta una biofábrica matriz-soportada y una clasificación genética de acumulación biogénica “intrínseca”; esto implica comportamiento gregario y colonización preferencial del sitio. La biocenosis corresponde a la producción biogénica (huevos), con la cáscara diagenizada por hidrotermalismo y microorganismos extremófilos. La tanatocenosis y el tiempo promedio fueron nulos por el inmediato enterramiento de los huevos luego de la oviposición indicando que no existió una etapa bioestratinómica. La tafocenosis representa el carácter tafonómico más significativo. Las cáscaras presentan alteraciones por soluciones hidrotermales, mientras la recalcificación y silicificación representan las mineralizaciones más frecuentes. La presencia de microchert, calcedonia, microesferas de ópalo-A, agregados de epidoto y minerales de arcilla reemplazando sectores de la cáscara y las membranas del huevo, confirman una alteración hidrotermal bajo condiciones excepcionales. La presencia de microorganismos fósiles (estromatolitos, cianobacterias y diatomeas), numerosas macro-estructuras, microfacies y microfábricas hidrotermales, y los atributos tafonómicos oológicos, sugiere que el sitio de nidificación de Sanagasta representa un particular ejemplo de tafocenosis y un Lagerstätte. El sitio de nidificación de neosaurópodos de Sanagasta es el primer caso fósil documentado sobre la reproducción de un grupo de dinosaurios dependiente de su ambiente.; The Cretaceous Sanagasta nesting site, La Rioja Province, Argentina, has shed insights on the reproductive behavior of neosauropods, documenting colonial behavior, phylopatry, and an opportunistic environment-dependent-reproduction relationship with their paleoenvironment. The taphonomy of this monotypic nesting site is described in order to assess its biostratinomy and fossil diagenesis. The 3D spatial egg-clutch arrangement is well preserved and suggests the presence of autochthonous associations with in-situ ovipositions, without nesting trace. The egg-bearing level presents a matrix-supported packed biofabric and an “intrinsic” biogenic accumulation that implies a gregarious behavior through their preferential colonization of a specific paleohydrothermal nesting site. The biocenosis of biogenically deposited eggs, with eggshell mineralization is altered by hydrothermal activity, and extremophile microorganisms. The thanatocenosis and time-averaging were virtually null because the eggs buried in the substrate immediately after being laid. In contrast, the taphocenosis represents the most important taphonomic feature. The eggshells display several synchronous taphonomic alterations produced by acidic hot spring solutions, while re-calcification and silicification are the most common eggshell recrystallizations. The presence of microchert, chalcedony, ~10 μm-diamteer opal-A microspheres, epidote aggregates, several macro-structures, and fibrous clay minerals replacing parts of the eggshell and egg membranes, indicates an extreme hydrothermal alteration under exceptional conditions. The presence of fossil stromatolites, cyanobacterians, and diatoms, coupled with sedimentary tructures (microfacies and hydrothermal microfabrics), and with eggs taphonomy imply that the Sanagasta nesting site represents a particular instance of taphocenosis and a Lagerstätte. The Sanagasta dinosaur nesting site is the first documented case of environment-dependent reproduction amongst neosauropods.

Dos sustitutos inusuales de la yerba mate (Ilex pseudobuxus e Ilex taubertiana): morfología, flavonoides y distribución geográfica; Two unusual maté substitutes (Ilex pseudobuxus and I. taubertiana): morphology, flavonoids and geographical distribution Ricco, Rafael Alejandro; Giberti, Gustavo Carlos; Wagner, Marcelo Luis; Gurni, Alberto Angel Ilex pseudobuxus e I. taubertiana fueron considerados sustituyentes menores del árbol de la yerba mate genuina (Ilex paraguariensis, Aquifoliaceae), una especie cuyas áreas de distribución natural y producción son semejantes aunque no son idénticas a la corología de los taxa precedentes. Dichas especies eran consideradas presuntamente muy emparentadas sistemáticamente (ambas pertenecen a la subsección laxae Loes.), ya que comparten algunos caracteres morfológicos. Aquí se presenta un estudio morfológico y fitoquímico (flavonoides) de este grupo, sustentados por nuestras propias colecciones a campo de estas especies y por observaciones realizadas in situ, todo acompañado por una revisión de la literatura disponible sobre la exomorfología, anatomía vegetal, citología, fitoquímica y metabolómica del grupo. Adicionalmente, como sus áreas de distribución geográfica no coinciden exactamente con aquella perteneciente a la yerba mate genuina, expresamos que ambas especies no pertenecen al grupo de los principales adulterantes de la yerba mate.; Ilex pseudobuxus and I. taubertiana were considered as minor substitutes of the true maté's tree (Ilex paraguariensis, Aquifoliaceae), a species whose wild distribution and production areas are allied but not identical to the chorology of the former taxa. The two species were considered as presumably close on Systematics grounds (both belong to subsection laxae Loes.) as they share few exomorphological traits. A morphological and flavonoid study approach, based on our own wild field collections and in situ observations is attempted here, accompanied by a review of the existing literature on exomorphology, plant anatomy, cytology, phytochemistry and metabolomics of the group. We conclude that both species are not so closely related as it was presumed, and that they are also quite different from Ilex paraguariensis. Additionally, as their geographical distribution areas differ to that of the genuine maté, we believe that they are not in Ilex paraguariensismayor cogeneric substitutes group.

Laberintos de la emancipación: reciprocidad y conflicto entre agentes de promoción social y dirigentes campesinos; Labyrinths of the emancipation: reciprocity and conflict between agents of social development and peasants leaders Cowan Ros, Carlos Javier En el artículo se analiza el vínculo entre técnicos de una ONG de promoción social y dirigentes de una organización campesino-indígena, situada en la provincia de Jujuy, noroeste de Argentina. El lazo es interpretado como una relación de mediación cultural, que se constituye a través de un ciclo de prestaciones sociales, del tipo dádiva, que envuelve expectativas y compromisos, no siempre correspondidos. En el vínculo se expresa una de las paradojas de la promoción social, que se constituye en objeto de análisis empírico y de reflexión teórica de este artículo. Ese tipo de relación presenta cierta ambigüedad: si, por un lado, los agentes de promoción social pretenden llevar a los destinatarios de sus acciones a una posición de mayor autonomía o emancipación, por otro, a partir del vínculo que crean y de la posición de poder que ocupan, generan cierta dependencia con la institución que encarnan. Esa contradicción se explicita en tensiones y disputas, cuyo desarrollo resulta en la reconfiguración del lazo y de la organización social en la que opera.; This paper analyzes the relationship between the professional team members of a NGO in the field of social development, and the leaders of an organisation of peasants and aboriginal, located in the province of Jujuy, northwest of Argentina. The link itself is interpreted as a relationship of cultural mediation, which is constructed through a cycle of social provisions —in terms of free benefits— which involves a net of expectations and commitments —not always honoured—. These links expose one of the paradoxes of social development, which constitutes the main object of empirical analysis and theoretical reflection of this paper. This kind of bond shows a certain ambiguity: if, on the one hand, the agents of social promotion aim a better position in terms of autonomy and emancipation for the target group of their actions, on the other hand, through the kind of bond they build and as a consequence of the sort of power they exert, they tend to generate some dependence with the institutions they represent. This contradiction is manifested through tensions and disputes that, when develop, result on reconfigurations of the bond itself, and of the social organisations they work with.

A structural and vibrational study of dehydrofukinone combining FTIR, FTRaman, UV–visible and NMR spectroscopies with DFT calculations Lizarraga, Emilio Fernando; Romano, Élida; Raschi, Ana Beatriz; Leyton, Patricio; Paipa, Carolina; Catalan, Cesar Atilio Nazareno; Brandan, Silvia Antonia The vibrational and electronic properties of 4b,5b-eremophil-7(11)9-dien-8-one, also known as dehydrofukinone (DHF), have been investigated by using experimental FT-IR, FT-Raman, NMR and UV spectra techniques and density functional theory (DFT) employing B3LYP exchange correlation with the 6-31G and 6-311++G basis sets. The calculated vibrational frequencies and the chemical shifts were successfully compared with the corresponding experimental values. The DFT calculations were combined with the Pulay’s scaled quantum mechanical force field (SQMFF) methodology in order to perform a complete assignment of the observed bands in the vibrational spectra. The comparison of the theoretical ultraviolet–visible spectrum with the corresponding experimental demonstrates a good concordance. The natural bond orbital (NBO) study reveals for the isopropyliden and the two rings of DHF the characteristics of the electronic delocalization, while the corresponding topological properties of electronic charge density were analyzed by employing Bader’s Atoms in the Molecules theory (AIM).

Marosa di Giorgio: surrealismo e imaginación erótica Nespolo, Maria Jimena En la obra poética de Marosa di Giorgio, el erotismo se asocia a una concepción ominosa de la maternidad. De un modo radical, esta escritura subvierte la figura judeocristiana de la madre pura y beata para postular esa “maternidad monstruosa” como apología del acto creativo. En la profusa red de herencias surrealistas y afinidades electivas que rodean esta poética, hay al menos tres escritoras rioplatenses a las que puede identificarse como precursoras: Delmira Agustini, Armonía Somers y Alejandra Pizarnik.; In the poetry of Marosa di Giorgio, eroticism is associated with a conception of motherhood quite ominous. In a radical way, this script subverts Judeo-Christian figure of pure and pious mother to postulate this “monstrous maternity” in defence of the creative act. In the profuse network of surrealist legacies and elective affinities surrounding this poetic, there are at least three writers in Rio de la Plata to wich can be identified as precursors: Delmira Agustini, Armonia Somers and Alejandra Pizarnik.

Aportes para pensar la participación comunitaria en salud/salud mental desde la perspectiva de redes; Contributions to thinking about community participation in health/mental health from the perspective of networks; Contribuições para pensar a participação comunitária em saúde/saúde mental a partir da perspectiva de redes Bang, Claudia Lia; Stolkiner, Alicia Ines Desde la declaración de Alma-Ata, en 1978, múltiples experiencias han incluido en sus prácticas en salud/salud mental dispositivos basados en la participación comunitaria. En ellas se han reproducido sentidos globales y abstractos que artificialmente homogeneizan las características comunitarias y participativas, reproduciendo modelos normativos que dieron origen a la Atención Primaria de Salud (APS). El objetivo de este artículo es revisar algunos de los principales aportes de la teoría de redes que, desde una perspectiva compleja, permitan redimensionar la participación comunitaria en salud. Se indagan las lógicas en que son entendidas la comunidad y la participación comunitaria en un estudio de caso. Se concluye que considerar a la población como actor potencial y generar canales efectivos de participación sigue siendo un gran desafío.; Since the declaration of Alma-Ata (1978), multiple experiences have included devices based on community participation in their practices in health/mental health. Abstract and global senses that artificially homogenized community and participatory characteristics have been reproduced, reproducing models that gave rise to the Primary Health Care (PHC). This paper aims to review some of the main contributions of the networks theory that, from a complex perspective, resize the community participation in health. In a case study, the logics in which community and community participation are understood are enquired. It is concluded that to consider the population as a potential role player and to generate effective channels of participation remain a great challenge.; Desde a declaração de Alma-Ata, em 1978, múltiplas experiências incluíram em suas práticas de saúde/saúde mental dispositivos baseados na participação comunitária. Nelas reproduziram-se sentidos globais e abstratos que homogeneízam artificialmente as características comunitárias e participativas, reproduzindo modelos normativos que deram origem à Atenção Primária à Saúde (APS). O objetivo deste artigo é revisar algumas das principais contribuições da teoria de redes que, desde uma perspectiva complexa, permitam redimensionar a participação comunitária em saúde. Indagam-se as lógicas que entendem a comunidade e a participação comunitária em um estudo de caso. Conclui-se que considerar a população como ator potencial e gerar canais efetivos de participação continua a ser um grande desafio.

Matching metal pollution with bioavailability, bioaccumulation and biomarkers response in fish (Centropomus parallelus) resident in neotropical estuaries Souza, Iara C.; Duarte, Ian D.; Pimentel, Natieli Q.; Rocha, Lívia D.; Morozesk, Mariana; Bonomo, Marina M.; Azevedo, Vinicius C.; Pereira, Camilo D.S.; Monferran, Magdalena Victoria; Milanez, Camilla R. D.; Matsumoto, Silvia T.; Wunderlin, Daniel Alberto; Fernandes, Marisa N. Two neotropical estuaries affected by different anthropogenic factors were studied. We report levels of metals and metalloids in water and sediment as well as their influence on genetic, biochemical and morphological biomarkers in the native fish Centropomus parallelus. Biomarkers reflected the fish health status. Multivariate statistics indicated both spatial and temporal changes in both water and sediment, which are linked to the elemental composition and health status of inhabitant fish, showing the biggest influence of surface water, followed by sediments and interstitial water. Bioaccumulation in fish muscle was useful to identify elements that were below detection limits in water, pointing out the risk of consuming fish exceeding allowance limits for some elements (As and Hg in this case). Multivariate statistics, including physical, chemical and biological issues, presents a suitable tool, integrating data from different origin allocated in the same estuary, which could be useful for future studies on estuarine systems.

The role of Pleistocene glaciations in shaping the genetic structure of South American fur seals (Arctocephalus australis) Tunez, Juan Ignacio; Cappozzo, Humberto Luis; Pavés, H.; Albareda, D. A.; Cassini, Marcelo Hernan Analysing a 529 bp segment of the mitochondrial control region, we evaluated the role that Pleistocene glaciations may have had in shaping the genetic structure currently found in the two southernmost breeding areas of the South American fur seal, Arctocephalus australis. Additionally, we analysed if these two breedingareas correspond to different conservation units. We found 26 haplotypes in 54 individuals. Colonies from the Uruguayan breeding area did not show significant differences in haplotype frequencies, which suggest that they are remnants of a single ancient gene pool. The genealogical relationship between haplotypes revealed a pattern of phylogeographic structure with two main haplogroups corresponding to the different breeding areas. The analysis of molecular variance and the estimate of population divergence time also indicated significant genetic differences and a long period of isolation between Atlantic and Pacific colonies, suggesting that these breeding areas would correspond to different conservation units.