Activismo, orígenes e identidad: singularidades y regularidades en la construccion de demandas a nivel global; Activism, origins and identity: singularities and commonialities in the construction of demands at a global level Gesteira, María Soledad Quién soy, de dónde vengo, quiénes son las personas que me trajeron al mundo, son interrogantes que, en la cultura occidental, histórica y tradicionalmente han sido considerados fundamentales para el ser humano, y son algunas de las preguntas que buscan una respuesta para quienes inician la búsqueda de sus orígenes. La información sobre el origen biológico ha sido gestionada de diversas formas en distintas partes del mundo y muchas veces, fundamentalmente en los casos en que los niños no son criados por aquellas personas que los engendraron, ha sido ocultada y silenciada durante largo tiempo. A partir de una investigación con personas que buscan sus orígenes en Argentina, el artículo describe y analiza diversas formas de activismo que, alrededor del mundo, llevan adelante estas personas para que se reconozca su derecho a conocer sus orígenes. Si bien, la descripción devela las singularidades locales de cada organización, el análisis de este movimiento global permite identificar regularidades en las formas en que estos activistas organizan sus demandas en donde lo virtual, lo íntimo y lo político resultan dimensiones centrales.; Who I am, where I come from, who are the people who brought me to the world, are questions that, in Western culture, historically and traditionally have been considered essential for the human being and for those who start searching for their origins. Information about biological origins has been managed in different ways around the world and often, fundamentally in cases where children are not raised by those who engendered them, has been hidden and silenced for a long time. Based on a research with activists in Argentina who are looking to find out about their origins, this article describes and analyzes various forms of activism that these people have been carrying out around the world to get their right to know their origins recognized. Although the description reveals the local singularities of each organization, the analysis of this global movement allows us to identify regularities in the ways in which these activists organize their demands where the virtual, the intimate and the political dimensions become central.

Efectos de un programa de intervención en vocabulario, conciencia morfológica y fonológica en niños de Jardín de Infantes en Lectura en Grado 1; Effects of an Intervention Program on vocabulary, morphological and phonological awareness in Kindergarden children on Grade 1 Reading achievement Porta, Maria Elsa; Ramirez, Gloria Este estudio evalúa el impacto de dos tipos de intervención (conciencia fonológica (CF) versus una intervención combinada en CF, vocabulario y conciencia morfológica CM)) comparadas con la enseñanza regular sobre el nivel lector adquirido al final de primer grado en niños de Jardín de Infantes (N = 129) de bajo nivel socioeconómico. Obtuvimos mediciones preliminares y posteriores a la intervención de CF, CM, vocabulario, lectura y comprensión lectora. Los niños que recibieron la intervención combinada tuvieron un desempeño superior a los niños del grupo control y a los que recibieron intervención únicamente en CF en las pruebas de vocabulario y comprensión lectora. También superaron al grupo control en CM y lectura. La intervención más efectiva fue la que incluyó tres componentes críticos de la lectura: CF, conciencia morfológica, y vocabulario. Estos hallazgos tienen implicaciones teóricas para un modelo más integral del desarrollo de la lectura en español y prácticas para la efectiva evaluación e intervención temprana en la lectura.Palabras clave: Adquisición de la lectura; conciencia morfológica; conciencia fonológica; intervención temprana; vocabulario.; The purpose of this study was to investigate the impact of two interventions (phonological awareness (PA) only versus a combined intervention on PA, vocabulary, and morphological awareness (MA)) in Argentinean kindergarteners from low SES on their reading comprehension at the end of grade one. Participants were 129 Spanish monolingual, Argentinian children from low SES backgrounds. Using a pre-posttest quasi-experimental design, we compared three conditions: (a) intervention on PA only, (b) combined intervention (PA + vocabulary + MA), (c) control group (business as usual). Kindergarten teachers implemented the interventions with support (for small group intensive work) by speech and language pathologists, over a period of three months (22 hours total). Participating children were assessed on vocabulary, letter-word identification, PA, and MA in kindergarten (before and after the intervention) and in grade one, and on reading comprehension in grade one only. Repeated ANOVAS indicated that children receiving the combined intervention outperformed children in the PA only intervention on vocabulary and reading comprehension and the control group in MA and reading. Findings suggest that the combined intervention was the most effective. These findings have theoretical implications for a more comprehensive developmental model of reading in Spanish, as well as practical implications for teaching and assessment of literacy skills in young, monolingual Spanish-speaking children from low-socioeconomic backgrounds.

Análisis mediante FTIR de la conservación del colágeno y la posible contaminación en muestras óseas del cuaternario pampeano; FTIR analysis of colagen preservation and possible contamination in quaternary bones samples from the pampas Vitale, Paula; Tasca, Julia Elena; Bax, María Marcela; Flores, Ariadna; Politis, Gustavo Gabriel; Valenzuela, Luciano Oscar En este trabajo se analizan los espectros FTIR (espectroscopia infrarroja mediante transformada de Fourier) de diferentes muestras de colágeno tipo I, extraído de huesos de guanaco (Lama guanicoe) y venado de las Pampas (Ozotoceros bezoarticus) modernos y arqueológicos con distintos grados de conservación de la proteína y algunas de ellas con aporte orgánico externo. También se determinó la relación C/N, %C, %N y rendimiento en la extracción de colágeno. Se analizaron 4 relaciones de porcentajes de transmitancia obtenidas sobre las bandas características de los espectros de colágeno (Amida III/AmidaI, Amida III/Prolina, Prolina/Amida I, 1080 cm-1/Amida I) las cuales se proponen como parámetros para determinar la calidad de colágeno. Como resultado, sostenemos que debido a que la técnica FTIR es muy versátil, brinda una herramienta de decisión simple, no demasiado costosa, rápida y accesible, permitiría establecer parámetros de calidad, determinar la conservación del colágeno en especímenes arqueológicos y seleccionar los mejores para realizar estudios isotópicos y radiométricos.; This paper analyzes FTIR (infrared spectroscopy by Fourier transform) spectra of type I collagen samples extracted from modern and archaeological bones of guanaco (Lama guanicoe) and Pampas deer (Ozotoceros bezoarticus) with varying degrees of protein conservation and, in some cases, external organic input. C:N atomic ratio, C%, N%, and collagen yield were determined. Four transmittance ratios from the spectra were analyzed: Amide III/Amide I, Amide III/Proline, Proline/Amide I, 1080 cm-1/Amide I, which we propose be used for determining collagen quality. Since FTIR analysis is very versatile, it can be used as a simple decision-making tool, it is inexpensive, rapid, and available, we argue that establishing quality parameters with this method would allow us to determine collagen preservation in archaeological samples before sending them for isotopic and radiometric analyses and select the best samples.

Nematode parasites in the lizards Salvator rufescens, Teius teyou (Teiidae) and Homonota underwoodi (Phyllodactylidae) from the Monte Region in Central-Western Argentina Castillo, Gabriel Natalio; González Rivas, Cynthia Jesica; Acosta, Juan Carlos We studied the parasite fauna in three lizard species, Salvator rufescens, Teius teyou (both Teiidae) and Homonota underwoodi (Phyllodactylidae) in Encón locality, province of San Juan, Argentina. We analyzed gastrointestinal contents and estimated ecological indicators of parasites. Presence of three parasitic nematode taxa was determined in the stomach: Physaloptera sp. and Physaloptera retusa (Physalopteridae), and Pharyngodon sp. (Pharyngodonidae). Our parasitic studies are the first for these hosts in Argentina and contribute to current knowledge of the parasite fauna in reptiles.

El Going Out agrícola de China: Un análisis de su desarrollo en Argentina; China’s Going Out agricultural policy: An analysis of its development in Argentina Mora, Sol Yamila La extraordinaria demanda de materias primas de la República Popular China provocó un inusitado incremento de las importaciones de commodities. No obstante, con posterioridad a la crisis alimentaria mundial de 2008, China privilegió la Inversión Extranjera Directa(IED) como mecanismo para garantizar su abastecimiento alimentario doméstico. Como resultado, la agricultura adquirió un lugar prioritario dentro de la estrategia de Going Out. A pesar del abrupto desembarco de IED chinas en sectores primario-extractivos en Argentina, la literatura académica dirigió limitada atención al avance de los capitales de China en la agricultura. Este artículo analiza la forma en que China ha desplegado su estrategia de IED agrícola en Argentina en el período 2010-2016. Para ello, emplea una metodología cualitativa a partir de un relevamiento de las iniciativas de China en Argentina sobre la base de la prensa, publicaciones académicas y fuentes gubernamentales. Ello permite distinguir tres modalidades dentro la estrategia, en las que las inversiones se dirigieron a la tierra, a los servicios agrícolas y a la cadena de valor agrícola.; The extraordinary demand for raw materials from the People's Republic of China led to an unusual increase in commodity imports. However, after the 2008 world food crisis, China favored Foreign Direct Investment (FDI) as a mechanism for guaranteeing its domestic food supply. As a result, agriculture became a priority within the Going Out strategy. Despite the abrupt disembarkation of Chinese FDI into primary-extractive sectors in Argentina, the academic literature focused limited attention on the advance of Chinese capital in agriculture. This article analyzes the way in which China deployed its agricultural FDI strategy in Argentina between 2010 and 2016. A qualitative methodology is used based on a survey of Chinese initiatives in Argentina based on news coverage, academic publications and government sources. This has led to the identification of three modalities within the strategy in which investments were directed to land, to agricultural services and to the agricultural value chain.

La Teoría Política Contemporánea frente a la Utopía: Razones de un divorcio; Contemporary Political Theory versus Utopia: Reasons for a divorce Souroujon, Gaston El presente trabajo se pregunta por las razones de la desaparición del género utópico en el seno de la teoría política contemporánea. Para dar cuenta de ello, luego de definir las características de este género, y de marcar las trasformaciones claves que ha presentado a lo largo de la historia, el escrito se introduce en tres tradiciones políticas disimiles: marxista, liberal, y la articulada por Arendt, para rastrear en el lenguaje de las mismas las diferentes críticas a la utopía. En este sentido, observamos que en tanto el pensamiento marxista ataca la falta de rigor científico de las utopías, los liberales descubren lo opresivo que el género es para las libertades individuales y el mundo privado, y Arendt y los posfundacionalistas advierten que el mundo utópico solo es posible con la desaparición de lo político.; he present work asks about the reasons for the vanishing of the utopian genre within the contemporary political theory. In order to account for it, after defining the characteristics of this genre, and to mark the key transformations that it has presented throughout history, the work is introduced in three dissimilar political traditions: Marxist, liberal, and the one articulated by Arendt, to trace in the language of these the different criticisms of utopia. In this sense, we observe that while Marxist thought attacks the lack of scientific rigor of utopias, the liberals discover how oppressive this genre is for individual liberties and the private world, and Arendt and post-foundationalists warn that the utopian world only is possible with the disappearance of the political.

Realistic indirect spin interactions between magnetic impurities on a metallic Pb(110) surface Rébola, Alejandro Federico; Lobos, Alejandro Martin Motivated by recent experiments, here we study the indirect interactions between magnetic impurities deposited on top of a clean Pb(110) surface, induced by the underlying conduction electrons. Our approach makes use of ab initio calculations to characterize the clean Pb(110) surface and avoids self-consistency, a feature that greatly reduces the computational cost. In combination with second-order perturbation theory in the microscopic s-d exchange parameter Jsd between a magnetic adatom and the conduction electrons, we are able to systematically derive the Ruderman-Kittel-Kasuya-Yosida, the Dzyaloshinskii-Moriya, and the anisotropic tensor interactions emerging at the Pb(110) surface between magnetic impurities. The only adjustable parameter is Jsd, which is fitted to reproduce the experiments. Our results show important anisotropy effects arising both from the rectangular geometry of the (110) unit cell and from the strong Rashba spin-orbit interaction due to the broken inversion symmetry at the Pb(110) surface. In addition to Pb(110), the characterization of the indirect spin interactions described here could be extended to other realistic metallic surfaces for weakly coupled impurities and would enable us to fabricate atomic-size nanostructures with engineered interactions and on-demand magnetic properties, anticipating useful applications in nanotechnology.

Recent studies on magnetic mesoporous nanomaterials for water treatments Ocampo, Santiago; Peralta, Marcos Emanuel; Parolo, Maria Eugenia; Carlos, Luciano En el contexto del tratamiento de aguas contaminadas, este trabajo ofrece una visión general y en profundidad de los últimos avances en diseño racional, síntesis y aplicaciones de nanomateriales magnéticos mesoporosos en la adsorción, oxidación química y reacciones de reducción centradas en la eliminación de contaminantes orgánicos. Se presta especial atención a los materiales magnéticos mesoporosos a base de sílice y carbono. Finalmente, se discuten los desafíos que enfrenta la aplicación de estos materiales en sistemas de tratamiento reales.; Within the context of wastewater treatments, this review offers a general and in-depth overview of the latest advances in rational design, synthesis and applications of mesoporous magnetic nanomaterials in adsorption, chemical oxidation and reduction reactions focused on the removal of organic pollutants. Special attention is paid to magnetic mesoporous silica- and carbon-based materials. Finally, the challenges facing the application of these materials in real treatment systems are discussed.

Epidemiología, consumo de recursos y costos del manejo médico de la Hepatitis C en Argentina, Colombia, Uruguay y Venezuela; Epidemiology, Use of resources, and Costs of Medical Management of Hepatitis C in Argentina, Colombia, Uruguay, and Venezuela Bardach, Ariel Esteban; Hernández Vásquez, Akram; Palacios, Alfredo; Calderón, María; Soto, Natalie; Balan, Dario; Augustovski, Federico Ariel Objective: To describe the epidemiology, the consumption of resources and the relevant costs in the management of hepatitis C in four Latin American countries: Argentina, Colombia, Uruguay and Venezuela. Study design: Bibliographic review, study of costs and elicitation by experts Methods: A literature search was carried out to collect epidemiological and cost data for the management of the disease. Information was additionally elicited with hepatologists from each country using the modified Delphi Panel technique. For the estimation of costs, the perspective of the health system was adopted. The direct medical costs of the different stages associated with the natural history of the disease were considered through micro-costing. Results: Extensive epidemiological and economic information is provided for the four countries under study. The age range between 40 and 60 years was the most affected. The frequency of genotypes showed a predominance of genotype 1 (68 to 88%), genotype 1b having been reported as the most prevalent in Argentina and Colombia and 1a in Uruguay and Venezuela. The costs of drug regimens, associated health events and adverse events present important differences in the four selected countries of Latin America. Conclusion: Hepatitis C presents a high burden of disease in the countries under study, and its management imposes significant costs on health systems.

The Cost-Effectiveness of Continuous Versus Intermittent Renal Replacement Therapies in Acute Kidney Injury: Perspective of the Social Services for the Elderly in Argentina Garay, Osvaldo Ulises; Palacios, Alfredo; Pichón-riviere, Andres; Augustovski, Federico Ariel; García Martí, Sebastián; Hernández Vásquez, Akram; López, Elena Tapia; Rosa Diez, Guillermo Javier; Bardach, Ariel Esteban Background: Acute kidney injury (AKI) is a public health problem that affects millions of hospitalized patients worldwide. In Argentina, evidence suggests that its incidence has risen in recent years. When severe, AKI may require a renal replacement therapy (RRT) where continuous RRT (CRRT) and intermittent RRT (IRRT) are plausible options for patients in the intensive care unit. Objective: To evaluate the cost utility of CRRT versus IRRT for the National Institute of Social Services for Retirees and Pensioners, the largest social security health insurance for elders in Argentina. Methods: This was a model-based cost-utility analysis. Long-term costs and health outcomes were estimated for a hypothetical cohort with a Markov model. Parameters used were obtained from published literature and validated with local experts. Local costs were estimated and expressed in $AR of 2016. Several sensitivity analyses were run to analyze the impact of uncertainty on results. Results: Continuous RRT dominated IRRT by cumulating over the model more quality-adjusted life years and less costs. Total discounted quality-adjusted life years for both cohorts were 1049 and 1034, respectively, and total costs were $95 362 and $103 871. Cost-effectiveness (CE) results reflect these differences in favor of CRRT with a deterministic cost-saving incremental CE ratio and a probability of CRRT being CE of 65.4%, considering a CE threshold of 1 gross domestic product per capita. Conclusions: Continuous RRT for patients with AKI eligible for CRRT or IRRT would probably be a cost-effective intervention for the National Institute of Social Services for Retirees and Pensioners’ view. Nevertheless, there is considerable uncertainty around results, mainly due to the lack of adequate controlled studies and local data on the prognosis of these patients in Argentina.

The shift of obesity burden by socioeconomic status between 1998 and 2017 in Latin America and the Caribbean: a cross-sectional series study Jiwani, Safia S; Carrillo Larco, Rodrigo M.; Hernández Vásquez, Akram; Barrientos Gutiérrez, Tonatiuh; Basto Abreu, Ana; Gutierrez, Laura; Irazola, Vilma; Nieto Martínez, Ramfis; Nunes, Bruno P.; Parra, Diana C.; Miranda, J. Jaime Background: The burden of obesity differs by socioeconomic status. We aimed to characterise the prevalence of obesity among adult men and women in Latin America and the Caribbean by socioeconomic measures and the shifting obesity burden over time. Methods: We did a cross-sectional series analysis of obesity prevalence by socioeconomic status by use of national health surveys done between 1998 and 2017 in 13 countries in Latin America and the Caribbean. We generated equiplots to display inequalities in, the primary outcome, obesity by wealth, education, and residence area. We measured obesity gaps as the difference in percentage points between the highest and lowest obesity prevalence within each socioeconomic measure, and described trends as well as changing patterns of the obesity burden over time. Findings: 479 809 adult men and women were included in the analysis. Obesity prevalence across countries has increased over time, with distinct patterns emerging by wealth and education indices. In the most recent available surveys, obesity was most prevalent among women in Mexico in 2016, and the least prevalent among women in Haiti in 2016. The largest gap between the highest and lowest obesity estimates by wealth was observed in Honduras among women (21·6 percentage point gap), and in Peru among men (22·4 percentage point gap), compared with a 3·7 percentage point gap among women in Brazil and 3·3 percentage points among men in Argentina. Urban residents consistently had a larger burden than their rural counterparts in most countries, with obesity gaps ranging from 0·1 percentage points among women in Paraguay to 15·8 percentage points among men in Peru. The trend analysis done in five countries suggests a shifting of the obesity burden across socioeconomic groups and different patterns by gender. Obesity gaps by education in Mexico have reduced over time among women, but increased among men, whereas the gap has increased among women but remains relatively constant among men in Argentina. Interpretation: The increase in obesity prevalence in the Latin American and Caribbean region has been paralleled with an unequal distribution and a shifting burden across socioeconomic groups. Anticipation of the establishment of obesity among low socioeconomic groups could provide opportunities for societal gains in primordial prevention. Funding: None.

Minería aurífera en el noroeste argentino: el caso de Timón Cruz (Santa Catalina, Jujuy, Argentina); Gold mining in northwest argentina: the case of Timón Cruz locality (Santa Catalina, Jujuy, Argentina) Angiorama, Carlos Ignacio; Giusta, Marco Nicolás; Becerra, María Florencia; Perez Pieroni, María Josefina Presentamos los primeros resultados de las investigaciones que estamos desarrollando en Timón Cruz, en la Puna de Jujuy, centrándonos en aquellas evidencias de instalación humana en el área que habrían estado vinculadas a la explotación aurífera. Las tareas realizadas hasta la fecha consistieron en prospecciones, recolecciones superficiales, registro arquitectónico general, análisis preliminar de los materiales recolectados y estudios de los registros escritos. El estudio de datos históricos permite afirmar que el devenir de esta localidad está marcado por el desarrollo minero de la región. Desde la arqueología, se pudieron registrar estructuras arquitectónicas dispersas o en conjuntos, con rasgos constructivos y elementos muebles asociados que permiten vincularlos a ocupaciones coloniales, junto con evidencias de extracción y procesamiento aurífero, que se encuentran dispersas en el paisaje o concentradas en el sitio Timón Cruz 2. Ciertas características constructivas y de los materiales asociados nos permiten pensar que este sitio habría sido ocupado en momentos coloniales tempranos, a diferencia de otros asentamientos de la región puneña posteriores al contacto hispano-indígena, con ocupaciones importantes a partir del siglo XVIII.; We present the first results of the ongoing research in Timón Cruz, in the Puna of Jujuy, focusing on the evidence of human installation in the area which would have been related to gold mining.The tasks performed to date include prospections, superficial recollections, general record of the architecture, preliminary analysis of collected material and study of written records. Historical data allow us to state that the history of this locality is marked by the mining development of the region. Archaeologically, we were able to register disperse or concentrated architecture, with constructive attributes and associated portable elements, that allow us to relate them to colonial occupations, alongside evidence of gold mining and processing, scattered in the landscape or concentrated in the settlement of Timón Cruz 2. Certain constructive characteristics and of the associated material allow us to consider them as part of an early colonial occupation, different from other post-hispanic contact settlements of the Puna region, which were occupied intensely since the 18th century.

Distribución espacial de la calidad de vida relacionada a la salud infantil en la provincia de Tucumán (Argentina); Spatial distribution of health-related quality of life in children from Tucumán (Argentina) Cordero, Maria Laura Este trabajo se propuso caracterizar la distribución espacial de la calidad de vida relacionada a la salud infantil en dos departamentos con diferente índice de bienestar de la provincia de Tucumán (Argentina). Específicamente, interesó determinar la prevalencia de niños y niñas con bajas apreciaciones de su calidad de vida relacionada a la salud y conocer sus manifestaciones territoriales, pormenorizando las diferencias urbano-rurales. Se realizó un estudio ecológico, exploratorio-descriptivo, transverso en 1647 escolares. Se administró el cuestionario internacional KIDSCREEN-52, que indaga la calidad de vida relacionada a la salud a partir de diez dimensiones; además, se desarrollaron índices espaciales. Los mapas temáticos permitieron detectar particularidades en los contextos estudiados. Se destacó que alrededor de la mitad de los niños/as evaluados/as se sintieron acosados/as y/o rechazados/as por sus pares, mientras que los sentimientos de tristeza comprometieron a uno de cada tres participantes. Los resultados de este trabajo identificaron y delimitaron zonas de actuación prioritarias, detectando problemáticas infantiles específicas que requieren especial atención. Finalmente, la cartografía resultante constituye un insumo susceptible de ser utilizado en el planeamiento territorial de la atención a la salud, mejora de la calidad de vida y reducción de las desigualdades.; The aim of this work was to characterize the spatial distribution of health-related quality of life in children from two departments with different welfare index in Tucumán (Argentina). Specifically, it was determined the prevalence of children with low appreciations of their health-related quality of life and their territorial manifestations, detailing urban-rural differences. An ecologi-cal, exploratory-descriptive, transverse study was carried out on 1647 schoolchildren. The KIDSCREEN-52 international questionnaire was applied, it explores ten dimensions of health-related quality of life, and also, spatial indexes were developed. The thematic maps allowed to detect particularities in the studied contexts. About half of the children evaluated felt harassed and /or rejected by their peers, while feelings of sadness compromised one in three participants. The results of this work identified and delimited priority ac-tion areas, detecting specific child problems that require special attention. Finally, the resulting cartography constitutes an input that can be used in the territorial planning of health care, improving the quality of life and reducing inequalities

Radicalización política y represión estatal: la juventud obrera y universitaria ante la Revolución Cubana y el Plan CONINTES. El caso de la ciudad de La Plata, Argentina (1959-1962); Political Radicalization and State Repression: Working and University Youth During the Cuban Revolution and the CONINTES Plan. The Case of La Plata, Argentina (1959-1962) Pis Diez, Nayla María; Robles, Horacio Baltazar Ubicados en los tempranos años sesenta, este artículo se propone reconstruir una parte de la historia política de la juventud argentina, en particular, de la ciudad de La Plata, a través de dos procesos: primero, el impacto de la Revolución Cubana y la radicalización de las organizaciones de izquierda y peronistas; segundo, la proliferación del anticomunismo, la extensión y transformación de las prácticas represivas gubernamentales con efecto directo sobre la vida de aquellas organizaciones. Nuestro objetivo es analizar aquellas transformaciones políticas tan típicas de los años sesenta tomando como caso la militancia joven de la ciudad, la trabajadora e identificada con el peronismo, y la estudiantil, identificada al mismo tiempo con la Reforma Universitaria y diversas organizaciones de izquierda. La “juventud” como concepto y lo “local” como escala de análisis son además, las claves metodológicas de este trabajo.; This article aims to reconstruct a part of the political history of Argentinian youth, particularly in the city of La Plata in the 1960s. This will be done through a dual approach: first, by analyzing the impact of the Cuban Revolution and the radicalization of the leftist and Peronist organizations; second, by discussing the proliferation of anti-communism and the extent and transformation of the government’s forms of repression, which had a direct effect on the organizations’ practices. Our aim is to analyze the political transformations that were typical of the sixties, focusing in particular on the city’s young activists, the workers, who were identified politically with Peronism, students advocating for University Reformism, and diverse leftist organizations. In our methodology, we use youth as a key concept and focus on the local as the scope of our analysis.

Inhibition of breast tumor growth by N(G)-nitro-l-arginine methyl ester (l-NAME) is accompanied by activation of fibroblasts Sciacca, Marianela; Belgorosky, Denise; Zambrano, Macarena; Gómez Escalante, José Ignacio; Bravo Roca, María Fernanda; Langle, Yanina Verónica; Sandes, Eduardo Omar; Eiján, Ana María; Lodillinsky, Catalina Nitric Oxide (NO) is involved in many physiological and pathological processes. It is generated by a family of NO synthases (NOS), being the inducible isoform, iNOS, responsible for higher amounts of NO. Here, we report that pharmacological inhibition of NO production by L-NAME reduces both viability and MAPK activated signalling pathways in iNOS positive human and murine cancer cell lines. In vivo, using syngeneic models, in parallel with tumor reduction induced by L-NAME, collagen deposition and α-SMA positive stromal cells are observed. This observation takes place only when tumor cells express iNOS. In vitro, L-NAME induces viability and differentiation on fibroblast. Our results reveal that NO inhibition contributes to stimulate proliferation and activation of fibroblasts in parallel with tumor reduction of iNOS positive breast cancer.

La formación de grado tras los muros: Un desafío complejo; Degree Formation Behind the Walls: A Complex Challenge Umpiérrez, Analía Alejandra Sofía; Salvadé, Romina Cecilia; Scipioni Ferreira, Luis Alfredo; Lacaria, Raquel En este artículo se presentan algunas reflexiones respecto a los desafíos que asume la educación universitaria en contexto de encierro como parte de primeros resultados del proyecto de investigación “Acceso a derechos: educación, arte y cultura en la cárcel” del que formamos parte. Se referencia aquí el recorrido del derecho a la educación superior en Argentina desde el siglo XXI hasta la actualidad, para ubicar en contexto histórico la puesta en marcha de la propuesta de trabajo que instala y sostiene la Universidad Nacional del Centro de la Provincia de Buenos Aires (Argentina) en las unidades situadas en Azul y Sierra Chica. Desde este marco, se abordan algunos de los desafíos y alcances emergentes de la concreción del proyecto en marcha, asumiendo la necesidad de reflexionar sobre los sentidos que construye la educación superior tras los muros como clave de lectura, y en lo específico, en torno al desafío de construir un espacio de tutorías como ámbito de encuentro y enseñanza.; This article presents some considerations on the challenges that university education assumes in the context of confinement as part of the first results of the research project "Access to rights: education, art and culture in prison" of which we are part. Here we make reference to the course of the right to higher education in Argentina from the 21st century to the present to locate in a historical context the implementation of the work proposal that installs and sustains the National University of the Center of the Province of Buenos Aires (Argentina) in the prisons located in Azul and Sierra Chica. From this framework, we focalized on some of the challenges and emerging scopes of the concretion of the project in progress, assuming the need to reflect on the senses that higher education builds behind the walls as a reading key, and specifically, around the challenge of building a tutorial space as a meeting and educational environment.

Why do adults go to adult secondary school? Donvito, Angel Eduardo; Otero, Maria Rita This paper analyzes the motivation of adult students to attend Adult Secondary Education (ASE) in Argentina. The investigation consisted of an exploration stage using the Focus Groups technique (FG) in which 29 ASE students participated, then a stage of analysis and construction of a survey based on the results of the FG, and finally, a stage of implementation and analysis of the survey, which was administered to 820 adult students nationwide. The results show that students' motivation is related to three aspects: improving job position, improving self-esteem and preparing to study a career. Furthermore, these aspects are not isolated, but are significantly associated with each other. Considering the students' motivation to attend the ASE both in the curricular conformation and at classrooms, could be a way to improve not only the teaching but also the quality of life of adults.

Eucalyptus viminalis Labill: (Myrtaceae) naturalizada en la República Argentina; Eucalyptus viminalis Labill: (Myrtaceae) naturalized in Argentina Scaramuzzino, Rosa Lourdes; Dalfonso, Carlos Oscar; Bardi, Juan Francisco; Gandini, Marcelo Luciano; Lara, Bruno Daniel Eucalyptus es un género de árboles nativos de Oceanía, con cinco especies previamente citadas como adventicias para la flora argentina. En este trabajo se informa por primera vez sobre la presencia de poblaciones espontáneas de E. viminalis en Argentina. Se recolectaron especímenes en las Sierras de Azul, Sistema de Tandilia, provincia de Buenos Aires, y sectores de llanura adyacentes. Se aporta una descripción de su morfología, hábitat, un mapa de la posición geográfica de las poblaciones estudiadas en Buenos Aires e imágenes que ilustran la ampliación de área de una población en un cerro en el Sistema de Tandilia. Adicionalmente, se presenta una clave para diferenciar las especies espontáneas de Eucalyptus que habitan en la Argentina.; Eucalyptus is a genus of trees native in Oceania, with five species previously cited as adventive for the Argentinean Flora. In this paper, spontaneous populations of E. viminalis in Argentina are reported for the first time. Specimens were collected at Sierras de Azul, Tandilia System, province of Buenos Aires, and adjacent plain sectors. A description of the morphology of the species and habitat are presented, together with a map indicating the geographical position of the studied populations in Buenos Aires, and images showing the areal expansion of a population in a hill of the Tandilia System. Complementary, an identification key for naturalized Eucalyptus species inhabiting Argentina is provided.

Escenas de lectura y escritura en las clases de Historia: Una mirada sobre las aulas del nivel secundario en la ciudad de Tandil; Reading and writing scenes in History classes: A look at the secondary level classrooms in the city of Tandil Gregorini, Vanesa Mariángeles; Cuesta, Virginia Desde el campo de la Didáctica de la Historia, este artículo busca explorar las variables que se entretejen en las prácticas de lectura y escritura en el cotidiano de las aulas de Historia en el nivel medio. Algunos de los interrogantes que guían el trabajo son los siguientes: ¿Cuáles son las prácticas de lectura y escritura que los docentes de Historia propician con la intención de que los alumnos aprendan? ¿Qué sentidos, criterios y percepciones anidan detrás de tales prácticas? Esta investigación articula los aportes de la historia de la lectura y de los estudios socioculturales, que han colocado al accionar de los sujetos como motor de cambio de las culturas escolares, y de la etnografía como enfoque privilegiado que permite acceder a las prácticas cotidianas. Constatamos, de este modo, la existencia de prácticas frecuentes que los docentes de Historia despliegan cotidianamente y cuya esencia es el desarrollo de explicaciones dialogadas. En general, son motorizadas por la realización de interrogantes que buscan estimular la lectura y escritura por parte de los alumnos. Proponer líneas de análisis sobre los sentidos y significaciones que sustentan tales prácticas es uno de los propósitos de esta presentación.; This paper tries to explore different aspects that occur in reading and writing history in secondary school. Some of the questions that guide this work are: which are the reading and writing practices that teachers performed in order to reach good aims with their students? Which are the perceptions underneath there practices? This search tries to put on surface the goals of the history of reading and the social sciences in relation with the idea that the motor of change in the scholar system are the teachers and the students. Also our methodological work is based on ethnography because it allows contemplating the everyday of the scholar rooms. This kind of work reveals that commonly the teachers tries to read the texts in class. The teachers mix different activities as reading in out loud, discussion themes and writing on the board. These practices stimulate different questions in relation with the history contents of the class. As searchers we propose some clues to analyze these activities.

La sonoridad del mal en dos relecciones de Francisco de Vitoria; The sound of evil in two reflections of Francisco de Vitoria Chimondeguy, Javier El presente artículo busca interpretar el concepto del mal en la Escuela de Salamanca en la primera mitad del siglo XVI. Relacionando el concepto del mal con el paisaje sonoro y la percepción sensorial presente en las relecciones brindadas por el teólogo burgalés en la Universidad de Salamanca.; The present article seeks to interpret the concept of evil in the School of Salamanca in the first half of the XVIth century. Making an overview of the concept of evil related to the soundscape and the sensorial perception relying on the relections taught by the theologian from Burgos in the University of Salamanca.