Digital pulse processing in Mössbauer spectroscopy Veiga, Alejandro Luis; Grunfeld, C. M. In this work we present some advances towards full digitization of the detection subsystem of a Mössbauer transmission spectrometer. We show how, using adequate instrumentation, preamplifier output of a proportional counter can be digitized with no deterioration in spectrum quality, avoiding the need of a shaping amplifier. A pipelined architecture is proposed for a digital processor, which constitutes a versatile platform for the development of pulse processing techniques. Requirements for minimization of the analog processing are considered and experimental results are presented.

Exact predictions from the Edwards ensemble versus realistic simulations of tapped narrow two-dimensional granular columns Irastorza, Ramiro Miguel; Carlevaro, Carlos Manuel; Pugnaloni, Luis Ariel We simulate, via a discrete element method, the tapping of a narrow column of disks under gravity. For frictionless disks, this system has a simple analytical expression for the density of states in the Edwards volume ensemble. We compare the predictions of the ensemble at constant compactivity against the results for the steady states obtained in the simulations. We show that the steady states cannot be properly described since the microstates sampled are not in correspondence with the predicted distributions, suggesting that the postulates of flat measure and ergodicity are, either or both, invalid for this simple realization of a static granular system. However, we show that certain qualitative features of the volume fluctuations which are difficult to predict from simple arguments are captured by the theory.

Discrete second order constrained Lagrangian systems: first results Borda, Nicolás; Fernández, Javier; Grillo, Sergio Daniel We briefly review the notion of second order constrained (continuous) system (SOCS) and then propose a discrete time counterpart of it, which we naturally call discrete second order constrained system (DSOCS). To illustrate and test numerically our model, we construct certain integrators that simulate the evolution of two mechanical systems: a particle moving in the plane with prescribed signed curvature, and the inertia wheel pendulum with a Lyapunov constraint. In addition, we prove a local existence and uniqueness result for trajectories of DSOCSs. As a first comparison of the underlying geometric structures, we study the symplectic behavior of both SOCSs and DSOCSs.

Insects found on Araujia species (Apocynaceae, Asclepiadoideae) in Argentina; Insectos hallados en especies de Araujia (Apocynaceae, Asclepiadoideae) en Argentina Carpintero, Diego Leonardo; Testoni, Daniel The results of a survey of the natural enemies of moth plant or “tasi”, species of Araujia (Apocynaceae, Asclepiadoideae), present in Argentina are shown in this paper. 57 species of insects were recorded of which 17 are cited as natural enemies of these species for the first time. Their specificity was determined and their potential use as biological control agents for Araujia hortorum Fourn. was hypothesized. Pseudosphex noverca Schaus (Lepidoptera, Arctiidae), is recorded for the first time in the Buenos Aires province, Argentina.; Los resultados de un estudio de los enemigos naturales de las "planta polilla" o "tasi", especies del género Araujia (Apocynaceae, Asclepiadoideae), que se encontraron en Argentina se presentan en este documento. Se registraron 57 especies de insectos, 17 de las cuales son citadas como enemigos naturales de estas plantas por primera vez. Se determinó su especificidad y se planteó la hipótesis de su uso potencial como agentes de control biológico para Araujia hortorum Fourn. La especie Pseudosphex noverca Schaus, (Lepidoptera, Arctiidae), se cita por primera vez para la provincia de Buenos Aires, Argentina.

Comparative dissolution studies of albendazole oral suspensions for veterinary use González Vidal, Noelia Luján; Starkloff, Walter Javier; Bentancor, Silvia; Castro, Silvina Gabriela; Suárez, Gonzalo Pablo; Palma, Santiago Daniel Helminth infections are a major health problem mainly in developing countries, and the evidence of emerging resistance to all the major antihelminthics has been recognized in the field of animal husbandry. Albendazole (ABZ) is the most effective broad-spectrum antihelminthic agent. The biggest problem with this drug is its low aqueous solubility, which leads to an erratic availability and great intraindividual variation in the levels reached in different tissues. As with other poorly soluble compounds, the dissolution rate is likely to be contingent on the formulation and may lead to differences in performance among different products available in the market. In previous studies, drastic pharmacokinetic differences were observed among ABZ formulations (oral suspensions) in the Uruguayan market. These samples were evaluated in vitro in terms of ABZ content and dissolution profiles, as well as the effect of increasing agitation speeds on the dissolution rate. The in vitro dissolution rate of formulation A was seriously affected by the increase in agitation speed, and in the case of formulation B, it did not fulfill both essential quality requirements (drug content and dissolution profile). Further studies may be carried out to correlate the suspension quality with its therapeutic effectiveness.

Plant heat shock protein 90 as carrier-adjuvant for immunization against a reporter antigen Corigliano, Mariana Georgina; Fenoy, Ignacio Martín; Sander, Valeria Analía; Maglioco, Andrea Florencia; Goldman, Alejandra; Clemente, Marina Here, we evaluated the modulation of the immune response induced by Hsp90 of Nicotiana benthami-ana (NbHsp90.3) against the Maltose Binding Protein (MBP) as a reporter antigen. Equimolar quantitiesof recombinant proteins were administered in mice as follows: MBP alone (MBP group), a mixture ofMBP and rNbHsp90.3 (MBP + rNbHsp90.3 group) and the fusion of MBP to rNbHsp90.3 (MBP-rNbHsp90.3group). The covalent linkage between NbHsp90.3 and MBP to bring a fusion protein was essential toinduce the strong specific antibody response with predominance of IgG2a. Eighty-four days after the firstimmunization, splenocyte proliferation from MBP-rNbHsp90.3-immunized mice was consistently higherthan that from MBP and MBP + rNbHsp90.3 groups. In addition, splenocytes from MBP-rNbHsp90.3 immu-nized mice produced higher levels of IFN- than controls. Finally, both formulations with rNbHsp90.3significantly enhanced the MHC class I expression levels, but only rNbHsp90.3 covalent bound to MBPinduced a specific cellular immune response against MBP measured as increased percentage of CD8+Tcells. Taken together, these results suggest that plant HSP90s could be incorporated as adjuvants in vac-cines that require the generation of a Th1 response along with a CD8 cytotoxic cell response to conferimmunity.

Spatial analysis of Aedes aegypti immatures in Northern Argentina: Clusters and temporal instability Garelli, Fernando Miguel; Espinoza, Manuel O.; Gurtler, Ricardo Esteban The objective of this study was to analyze the spatio-temporal patterns of Aedes aegypti immatures based on four entomological surveys that inspected over 6000 households in a large neighborhood of the city of Clorinda between 2007 and 2008. Global and local spatial point pattern analyses of immature presence or absence, habitat quality (estimated using a previously obtained statistical model) and pupal production were performed. Global analyses showed aggregation of both infestation and habitat quality up to 10 times bigger than previously described, ranging from 150 to 400 m between surveys. Pupal production was also clustered but at smaller scales than infestation presence/absence. The location ofthe clusters was temporally unstable between surveys. There was no spatial structure related to the control strategy; lots treated with temephos and lots uninspected (i.e., closed or refusing) were randomly distributed. These results suggest a combination of exogenous (the aggregation of better quality habitats) and endogenous (dispersal) processes explaining the observed patterns of larger-scale infestation. A spatial targeting strategy at the neighborhood scale would not be as cost-effective in Clorinda as in other sites where stable smaller-scale clusters permit the identification of key premises.

Mercado de trabajo y condicionamiento por color de piel en grandes centros urbanos de la Argentina de Grande, Pablo Ernesto; Salvia, Hector Agustin La discriminación por aspecto físico, y más en particular, el trato diferenciado hacia personas cuyos rasgos remiten a un origen entendido como indígena o no-europeo, constituye un problema escasamente tratado en los estudios de la desigualdad en la Argentina. Esta carencia, sumada a la falta de una articulación en las explicaciones de estos mecanismos relacionados con las desigualdades derivadas de las condiciones de clase, con frecuencia opacan el estudio del fenómeno profundizando sus efectos de invisibilidad. En este sentido, se mantienen ocultas las dificultades que afrontan quienes poseen estos rasgos para sobreponerse a prejuicios que reeditan cotidianamente principios racistas que asocian los rasgos nativos con la delincuencia, la falta de capacidades y saberes y, en términos generales, con la inferioridad socialmente entendida. En este artículo se investiga la incidencia del trato desigual basado en el aspecto físico –en particular, en el color de piel– sobre los logros laborales en una muestra de 2.500 personas de grandes centros urbanos de la Argentina en el año 2007. La discriminación por rasgos físicos, como efecto de la persistencia de principios operativos basados en la racialización de las interacciones sociales, pone de manifiesto la continuidad de principios jerárquicos, simbó- licos y materiales que obstruyen la posibilidad de una mayor igualdad en el desarrollo cotidiano de las condiciones de vida de las personas.; Discrimination by aspect, and more particularly, differential treatment for people whose appearance is classified as indigenous or non-European, is a problem rarely addressed in studies of inequality in Argentina. Moreover, the explanation of these mechanisms is often not related to inequalities derived from class conditions. As a consequence, discrimination by physical aspect (skin color) in Argentina remains unnoticed for most academic and public knowledge, “invisible”. Therefore, all the troubles faced by people who possess these traits stay unseen or overlook. Such unequal treatment, it is worth noting, is rooted in racist principles toward native people (indigenous) associating them with crime, lack of personal capacities and knowledge, and in general, socially inferior. This article investigates the impact of unequal treatment based on physical appearance –in particular skin color– in labor achievements in a sample of 2.500 people in large urban centers of Argentina in 2007. The discrimination based on physical aspect, as an effect of mechanisms based in the racialization of social interactions, shows the continuity of symbolic and material hierarchizing principles that obstruct the possibility of greater equality in the daily development of the conditions of people's lives.

Redes personales y locus de control en centros urbanos de la Argentina; Personal networks and locus of control in large urban centers of Argentina de Grande, Pablo Ernesto El presente estudio se propone analizar la relación entre la representación del locus de control y las estructuras de vínculos interpersonales en la Argentina. A partir de una muestra (n=1500) de hogares representativa de siete grandes centros urbanos (>200 mil habitantes) se examina la relación entre la externalidad del locus de control y diferentes aspectos de las redes personales de cada participante. Los resultados muestran que a mayor cantidad de relaciones disponibles se encuentran niveles inferiores de externalidad del locus de control, así como también menores niveles de externalidad al disponerse de lazos interpersonales fuera del barrio y con vínculos de nivel socioeducativo alto. En este sentido, se verifican asociaciones significativas entre representación de control del entorno y estructuras vinculares.; This study analyzes the relationship between locus of control and interpersonal relations structures in Argentina. After a representative sample (n = 1500) of households in seven major urban centers (>200,000 inhabitants), it examines the relationship between the externality of locus of control and different aspects of personal networks of each respondent. The results show that people having more relations experiment lower levels of externality of locus of control. Likewise, lower levels of externality are informed when personal ties outside the neighborhood are available, as well as ties high educational level. In this regard, significant associations are verified between control and personal relations structures.

On the multi-Koszul property for connected algebras Herscovich Ramoneda, Estanislao Benito In this article we introduce the notion of multi-Koszul algebra for the case of a locally finite dimensional nonnegatively graded connected algebra, as a generalization of the notion of (generalized) Koszul algebras defined by R. Berger for homogeneous algebras, which were in turn an extension of Koszul algebras introduced by S. Priddy. It also extends and generalizes the definition recently introduced by the author and A. Rey. In order to simplify the exposition we consider the minimal graded projective resolution of the algebra A as a bimodule, which may be used to compute the corresponding Hochschild (co)homology groups. This new definition includes several new interesting examples, e.g. the super Yang-Mills algebras introduced by M. Movshev and A. Schwarz, which are not generalized Koszul or even multi-Koszul for the previous definition given by the author and Rey. On the other hand, we provide an equivalent description of the new definition in terms of the Tor (or Ext) groups, and we show that several of the typical homological computations performed for the generalized Koszul algebras are also possible in this more general setting. In particular, we give an explicit description of the A_infinity-algebra structure of the Yoneda algebra of a multi-Koszul algebra. We also show that a finitely generated multi-Koszul algebra with a finite dimensional space of relations is a K_2 algebra in the sense of T. Cassidy and B. Shelton.

El uso del lenguaje estadístico R: herramientas para su uso en docencia e investigación Cid, Fabricio Damian El uso del lenguaje estadístico R: Herramientas para su uso en docencia e investigación. Articulo publicado en la sección "TICs y Docencia" de la Revista Actualidad Analítica"

Trade shocks and factor adjustment frictions: implications for investment and labor Artuç, Erhan; Bet, German; Brambilla, María Irene; Porto, Guido When export opportunities arise, the gains from trade can only be materialized if the economy adjusts. In order to expand and meet new markets, firms must hire new workers and tune their capital stock by investing in product lines, machines and equipment. If this process is costly and imperfect, the economy reacts partially and gradually. We formulate a multi-sector dynamic model featuring capital adjustment costs, firm heterogeneity, and labor mobility costs that we fit to data from Argentina. We estimate the structural capital and labor adjustment cost parameters and using counterfactual simulations we quantify the complementarity between trade shocks and domestic frictions: in the presence of lower costs of factor adjustment there is a sizeable incremental impact of trade shocks on capital, employment, wages, and output. The complementarity is larger for smaller trade shocks, and a large fraction of the capital complementarity is explained by an extensive margin (i.e. firms which do not respond to trade shocks when adjustment costs are high).

Variación espacio-temporal de los diferentes estados de desarrollo de mosquitas blancas Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) en cultivos de soja.; Spatial and temporal variation of the different developmental stages of the sweet potato whitefly Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) in soybean Cavallo, M. J.; Bruno, Marina; Irastorza, R.; Grilli, Mariano Pablo La soja es actualmente el cultivo más importante en la Argentina; a sus plagas tradicionales se ha sumado la mosca blanca, Bernisia tabaci. Los objetivos de este trabajo fueron establecer la distribución espacial de los diferentes estados de desarrollo (huevos, ninfas, pupas y adultos) de B. tabaci en lotes de soja del área central de la provincia de Córdoba (Argentina) y determinar la variación temporal de la abundancia de esos estados en dicha área. Se trabajó con muestras de lotes de dos localidades, Colonia Tirolesa y Colonia Caroya (Dpto. Colón). La comparación de abundancia entre localidades mostró variaciones entre ellas pero sólo se detectaron diferencias significativas entre adultos. Al comparar la variación de las abundancias entre fechas, sólo fue significativamente superior el aumento de ninfas y pupas durante la segunda fecha; en cuanto a los adultos se obtuvo mayor número durante la segunda fecha en Colonia Tirolesa. Cuando se analizó la variación de la abundancia tanto de inmaduros como de adultos se observaron diferencias significativas entre lotes para ambas localidades y para ambas fechas. Los resultados aquí presentados resultan de interés para ser utilizados en la toma de decisiones para el manejo de esta plaga.; Soybean is now-a-days the most important crop in Argentina. Among all insect pests affecting this crop the sweetpotato whitefly, Bemisia tabaci, is becoming a new and increasingly important pest. In this paper we propose as objectives: a) to establish the spatial distribution of the different stages of B. tabaci in soybean plots in the central area of Cordoba province (Argentina) and b) to determine the spatio-temporal variation of the abundance of these stages in the same places. We worked with samples collected in to localities of Colon Department; Colonia Tirolesa and Colonia Caroya. The comparisons between localities showed a high variability between them but only the differences between adults were statistically significative. When we compared the variation of the abundance between sampling dates only the increase of nymphs and pupae were significative during the second sampling date in Colonia Tirolesa. When comparing the differences between soybean plots differences between plots in both localities and in all B. tabaci stages were observed. These results are an important input to be use in decision making for the management of this pest in the area.

A vida com farda: a vestimenta policial como relato institucional em disputa; Life in uniform: police uniform as institutional stories in dispute; La vie en uniforme: l'habillement de la gendarmerie et de la police en tant que récit institutionnel en dispute Sirimarco, Mariana Toda instituição constrói relatos que a sustentam. Narrativas que encenam discursos, vivências e valorizações para, a partir daí, entender-se como grupo social e como instituição. Este trabalho pretende abordar um dos relatos institucionais mais caros à força policial: a farda como investidura. Se me proponho a abordar a figura da farda em tais termos é porque entendo que, em torno dos símbolos que ela encarna, constrói-se um entendimento tanto do indivíduo que o porta quanto do grupo a que ele pertence. É nesta veiculação de entendimentos que reside seu sentido de relato, capaz de funcionar como uma figura de pensamento e de orientar o discurso em uma direção específica. Adentrar-se nos sentidos, que giram numa espécie de rodamoinho e se sedimentam em torno da figura da farda, é uma maneira de começar a tematizar os modos concretos pelos quais instituição e indivíduos pensam a si mesmos.; Institutions build stories to support them; narrations that stimulate speeches, experiences and values from which to think themselves as a social group and an institution. This paper intends to analyze one of the fondest institutional stories of police agency: the uniform as an investiture. The author states the figure of the police uniform in such terms because the symbols embodied in it allow for building an understanding both of the individual wearing the uniform and of the group to which he belongs. Upon that professional and moral understanding lies the sense of the story, which is capable of functioning as a figure of thought and of guiding thespeech in a certain direction. Going deeper into the senses, thatswirl andsettle around the figure of the police uniform, is, finally, a way of beginning to analyze the concrete modes through which individuals and institution think about themselves.; Toute institution construit des récits qui la soutiennent. Ce sont des narratives qui mettent en scène des discours, des histoires de vie et des mise en valeur pour, ensuite, lui permettre de se définir en tant que groupe social et en tant qu'institution. Ce travail a pour but d'aborder les récits institutionnels les plus chers à la force policière : l'uniforme en tant qu'investiture. Si je propose d'aborder le symbole de l'uniforme de cette façon c'est parce que je crois qu'autour des symboles qu'il incarne, se construit une compréhension aussi bien de l'individu qui le porte que du groupe auquel il appartient. C'est dans la transmission de ces compréhensions que réside le sens du récit, capable de fonctionner comme une image de pensée et d'orienter le discours vers une direction spécifique. Pénétrer les sentiments, qui tournent dans une espèce de tourbillon et qui se sédimente autour de la figure de l'uniforme est une manière de commencer à thématiser les modes concrets par lesquels l'institution et les individus pensent à propos d'eux-mêmes.

Mímesis y pólis: sobre el silencio de Aristóteles y el gesto político de su poética Castillo Merlo, Mariana Carolina El objetivo principal de este trabajo es revisar la relación entre mímesis y pólis a partir de las consideraciones de la Poética de Aristóteles. En tal sentido, atenderé en primer lugar a los argumentos que se esgrimen en torno a los silencios de dicha obra y que conducirían a una eventual apoliticidad. En contra de esta posición, pretendo mostrar que en la Poética, Aristóteles sugiere un gesto político, al enfatizar el aprendizaje mimético del cual se pueden inferirse implicancias para la vida en la pólis.

Agricultura tradicional y riqueza de maices (Zea Mays). Estudio de caso en Caspalá, provincia de Jujuy, Argentina Ramos, Rita Soledad; Hilgert, Norma Ines; Lambaré, Daniela Alejandra En Caspalá, se cultivan maíces criollos tradicionales y maíces de incorporación más reciente. La riqueza actual es producto del uso, valoración y manejo de este recurso. Dicha valoración está, a su vez, asociada a las decisiones familiares que reflejan su cultura, tradición y cosmovisión. En este trabajo se analiza la riqueza de maíces cultivados actualmente en Caspalá, los cambios ocurridos en los últimos años, el uso de lo producido y el manejo del espacio agrícola disponible. Se realizaron entrevistas semiestructuradas a 37 (51%) familias de la comunidad. Se reportaron 23 etnotaxa (15 cultivados actualmente y 8 recordados), con un promedio de 6,61 etnotaxa sembrados por familia. Se identificaron como factores que influyen de modo positivo la riqueza de este cultivo los usos asignados a cada etnotaxón, el cultivo en diferentes microambientes y la procedencia de las ?semillas?. Asimismo se halló que el abandono de la actividad trashumante, la disminución de la actividad agrícola en distintos pisos altitudinales y la incorporación de productos alimenticios foráneos contribuyen a la disminución de tal riqueza. Los resultados hallados alertan sobre la importancia de Caspalá como conservador local de maíces y sobre la necesidad de desarrollar acciones que contribuyan a preservar las características actuales.

Comentario a Rubinelli, María Luisa (comp.) (2013). Nosotros los latinoamericanos. Identidad y diversidad. Homenaje a Arturo A. Roig Contardi, Laura Aldana Se trata de un comentario a la obra Nosotros los latinoamericanos. Identidad y diversidad. Homenaje a Arturo A. Roig de Maria Luisa Rubinelli. Arturo Andrés Roig se dio a la tarea de pensar sin que pueda encasillarse su obra en un territorio disciplinar determinado. Su labor como profesor, historiador y filósofo se encuentra articulada con sus elaboraciones teóricas en diversos ámbitos disciplinares: la historia de las ideas, la filosofía latinoamericana, la pedagogía universitaria. Su obra, sutil y rigurosa, se inserta en un contexto de debate acerca de la liberación que desemboca en un humanismo crítico y en la moral de la emergencia. Moviliza tradiciones, categorías y figuras simbólicas de la tradición filosófica europea y latinoamericana para esclarecer cuestiones filosóficas y metodológicas. Lee la tradición y se orienta a dilucidar la pregunta acerca de la cuestión de la emancipación humana, que conlleva la afirmación crítica del sujeto. Entregado a la tarea de pensar Arturo Roig propone, crea entramados categoriales que devienen herramientas imprescindibles para todos aquellos que se interrogan y reflexionan sobre la identidad y diversidad de los latinoamericanos. Es por ello que en 2009 Horacio Cerutti Guldberg ha señalado, en su Filosofando y con el mazo dando, que si queremos enterarnos del estado en que se encuentra al día de hoy la vanguardia de reflexión filosófica nuestroamericanista, se impone reexaminar meticulosamente la obra de Arturo Andrés Roig. La diversidad de contribuciones que compila María Luisa Rubinelli constituye un aporte más a la tarea propuesta por Horacio Cerutti Guldberg. El libro cumple su objetivo: destaca el valor de la producción teórica de Arturo Andrés Roig, es por ello que resulta interesante para aquellos que se ocupan de estudiar su pensamiento. Contribuye a la reconstrucción de su contexto discursivo al ponerlo en diálogo con otros autores y tradiciones filosóficas, tal como ocurre en los artículos de Fernán Gustavo Carreras y Gloria Silvana Elías. Muestran, los trabajos, los textos de Roig en su productividad: no sólo lo que dicen sus escritos, sino lo que ha posibilitado su obra.

Política exterior da Argentina e escolha institucional: A OEA no espelho da UNASUL e do MERCOSUL; Argentina's foreign policy and institutional choice: the OAS in the mirror of Unasur and Mercosur Merke, Mario Federico Este trabajo examina los determinantes de la elección institucional de la Argentina para la provisión de tres bienes públicos regionales: la seguridad interestatal, la democracia y los derechos humanos. A partir de un enfoque inspirado en el eclecticismo analítico, el trabajo considera, en primer lugar, la naturaleza del poder y las instituciones vinculadas a cada uno de estos tres bienes públicos. En segundo lugar, analiza las preferencias domésticas para cada bien y evalúa de qué modo se acomodaron a la naturaleza material e institucional de cada ámbito de cooperación o régimen internacional. El argumento principal es que la variación en la elección institucional responde a variaciones específicas en cada una de estas tres dimensiones.; Since 1983, Argentina adopted a high profile in the provision of three regional public goods: interstate security, democracy and human rights. However, Argentina has made different institutional choices, between the OAS, Unasur and Mercosur, depending on the public good in question. Argentina has therefore contributed to the institutional creation to cooperate in the security are; has practiced institutional selection to promote democracy and has made institutional use to promote human rights. What factors explain this variation in the institutional choice of Argentina? This paper examines Argentina's institutional choices for the provision of three regional public goods, namely interstate security, democracy and human rights. The study focuses on recent institutional choice (from 2003 onwards) and contrasts with the immediate past (the decade of the 1990s) and longest (since the creation of the OAS), to identify changes and continuities in Argentina's institutional choices.

Mujeres bolivianas y peruanas en la migración hacia Argentina: especificidades de las trayectorias laborales en el servicio doméstico remunerado en Córdoba; Bolivian and Peruvian women in migration to Argentina: specificities of career paths in paid domestic work in Córdoba Magliano, Maria Jose; Perissinotti, María Victoria; Zenklusen, Denise El propósito de este artículo es analizar, a partir de incorporar una mirada comparativa, las especificidades en los modos de inserción laboral en el servicio doméstico remunerado de las mujeres bolivianas y peruanas en la ciudad de Córdoba, Argentina. El hecho de retomar una mirada comparativa brinda herramientas para reflexionar sobre la manera en que el origen nacional, conjuntamente con el género y la clase social, se convierte en un factor condicionante de las trayectorias y estrategias laborales de las mujeres migrantes en Argentina. El desarrollo de este trabajo se sustenta en una metodología cualitativa, basada en entrevistas en profundidad con mujeres bolivianas y peruanas que residían en la ciudad de Córdoba al momento de esta investigación.; This article analyzes, from a comparative perspective, the distinctive features of the labour trajectories in paid domestic work of Bolivian and Peruvian women in the city of Cordoba, Argentina. A comparative perspective allows thinking about the ways in which national origin, together with gender and social class, becomes a central aspect of the labour trajectories and strategies of migrant women in Argentina. The methodology chosen to carry out this paper is qualitative, based on interviews with Bolivian and Peruvian women living in Cordoba city at the moment of this research.

El sentido de territorialidad en Argentina: cuidar un lugar para cuidarnos; Territoriality sense in Argentina: preserving our space as a way of preserving ourselves Soraire, Analia Florencia; Trimano, Luciana Geraldine Abordar el cuidado del lugar donde se vive en sintonía con la búsqueda y el logro de bienestar, posibilita dimensionar la preocupación por llevar adelante una vida sana frente a la dinámica destructiva de las tendencias hegemónicas de producción, donde el ambiente es significado como recurso natural. Las estrategias emprendidas para protegerse y cuidarse, tanto a modo individuo como colectivo, incluyen también la búsqueda de otro tipo de interacción con el medio que se habita. Al ser la significación del ambiente como lugar sagrado una de ellas, encontramos en la emergencia de la Pachamama (Madre Tierra)la clave de lectura que articula el cuidar un lugar para cuidarnos. En este sentido,ciertas prácticas alimentarias y acciones conjuntas que se emprenden en aras de defender y cuidar la tierra (y cuidarnos), son indicadores de las diferentes formas de búsqueda para sentirse bien.Recurrimos entonces, a dos etnografías en Argentina que dan cuenta de los cuestionamientos que nos generan las luchas contra la mega-minería a cielo abierto en Catamarca y contra la instalación de Monsanto en Córdoba.; To address the place where we live along with the quest and the attainment of wellness enables us to dimension the concerns around having a healthy life in light of the destructive dynamics of the prevailing production trends, in which the environment is, signified as a mere “natural resource”. The strategies adopted to preserve and care for oneself, as individual and within a collective setting, also include the pursuit of another type of integration with the means we inhabit. When we signify the environment as a sacred means, we come across the emergence of the “Pachamama” –Mother Earth, Gaia–, the interpretation key articulating the concept to “care for a place to care for us”. It is in this sense that certain feeding practices and joint actions are taken aiming at defending and preserving the Earth (and ourselves), and constitute indicators of the different ways to pursue what we mean by “feeling well”. We then turn to two ethnographies in Argentina which account for the questionings triggered by the fight against surface mega-mining practices in Catamarca and against the arrival of Monsanto in Córdoba.