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Sample records for chaco occidental argentina

  1. Rolado de fachinales y calidad de suelos en el Chaco occidental, Argentina Roller-chopping of shrub-thickets and soil quality in the western Chaco, Argentina

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    Analía Anriquez

    2005-12-01

    Full Text Available En la región chaqueña occidental la sustentabilidad de establecimientos ganaderos es reducida, debido a la existencia de grandes áreas dominadas por arbustos de los géneros Acacia, Celtis y Prosopis (´fachinales´ que generan baja capacidad receptiva y escasa accesibilidad del ganado. Con el propósito de controlar estas especies improductivas y aumentar la oferta forrajera en dichas áreas, se utilizan comúnmente prácticas agronómicas como por ejemplo el rolado, que generalmente es acompañado por siembra de pasturas y/o fuego prescrito. Nuestro objetivo fue evaluar el efecto de estas prácticas sobre algunos indicadores de calidad de suelo, tales como densidad aparente, carbono orgánico total, carbono orgánico particulado, respiración edáfica, carbono de la biomasa microbiana, actividad deshidrogenasa, en tres sitios característicos de la región: Alto, Media Loma y Bajo. Los tratamientos aplicados fueron rolado, rolado con siembra de Panicum maximum cv. trichoglume cv green panic, y rolado seguido por fuego prescrito. La densidad aparente, el carbono orgánico total, el carbono orgánico particulado y el carbono de la biomasa microbiana no fueron alterados por los tratamientos. Una mayor actividad deshidrogenasa se observó en el sitio Bajo, independientemente de los tratamientos y probablemente debido a un mayor contenido de agua del suelo. La respiración edáfica aumentó en el sitio Alto en todos los tratamientos, probablemente debido a la modificación de la actividad microbiana del suelo, atribuible al estímulo producido por los exudados radiculares del green panic y de las herbáceas nativas que aparecieron después de los tratamientos. En general, los indicadores de calidad de suelo no fueron afectados significativamente por los tratamientos usados, hecho atribuible a la baja intensidad de aplicación del rolado y de las prácticas asociadas (siembra de pasturas y fuegos prescriptos. No obstante, hubo un efecto

  2. The definition of the western boundary of the Guarani Aquifer System (Gran Chaco, Argentina): technical or conventional; Definicion del limite occidental del Sistema Acuifero Guarani (Gran Chaco, Argentina): tecnico o convencional

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    Rodello, E. A.; Veroslavsky, G.

    2012-11-01

    Unlike the eastern, northern and southern borders of the Guarani aquifer system (GAS), which extends beneath considerable regions of Argentina, Brazil, Paraguay and Uruguay, the western boundary, within the Gran Chaco, has no clear hydrogeologic definition that can be recognized at either the surface or subsurface. For this reason, the precise location of the aquifer in this area is open to many different possibilities, depending upon the factors or interests involved. Thus technical specialists have proposed locations that include or exclude, according to their own criteria, large sections of the Argentine Gran Chaco, the management and use of which, from an administrative point of view, imply diverse economic consequences. The Lomadas de Otumpa, located near the border between the Santiago del Estero and Chaco provinces, are gently sloping hills, rising to a height of no more than 110 m above the wide expanse of surrounding plains comprising the Gran Chaco. They trend NNE and are 200 km long and from 20 to 80 km in width, reflecting the presence of the regional Otumpa alignment. The Lomadas de Otumpa are clearly defined at the surface and thus they allow a geographical boundary to be imposed on the GAS sequences according to: i) their notable structural features at the surface, and ii) the close matching of the thinning and/or absence of the associated sedimentary record underground. Because the definition of the limits of the GAS has an influence on its evaluation, management, use and conservation, both at a technical and administrative level, it is of great importance to ascertain its hydrogeologic boundaries. (Author)

  3. Aquatic Coleoptera from two protected areas of the Humid Chaco eco-region (Chaco Province, Argentina

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    María L. LIBONATTI

    2013-01-01

    Full Text Available Se presenta por primera vez una lista de las especies de coleópteros acuáticos que habitan en el parque nacional Chaco y en el refugio de vida silvestre El Cachapé, dos áreas protegidas pertenecientes a la ecorregión Chaco Húmedo. Se identificaron 122 especies incluidas en 45 géneros y 10 familias. Dos especies se citan por primera vez para la Argentina: Ora atroapicalis Pic y Ora semibrunnea Pic (Scirtidae. Once géneros (Dytiscidae: Anodocheilus Babington, Bidessonotus Régim - bart, Hemibidessus Zimmermann; Noteridae: Mesonoterus Sharp, Notomicrus Sharp; Hydraenidae: Hydraena Kugelann, Gymnochthebius Orchymont; Hydrophilidae: Chasmogenus Sharp, Chaetarthria Stephens; Scirtidae: Ora Clark, Scirtes Illiger y 41 especies son citados por primera vez en la provincia del Chaco. La alta diversidad de coleópteros acuáticos registrada destaca la importancia de estas áreas protegidas.

  4. Perfil de reacciones adversas a medicamentos notificadas en Chaco, Argentina

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    Rosa Magdalena Osicka Marinich

    Full Text Available Introducción: el conocimiento sobre la toxicidad derivada del uso de los medicamentos genera especial preocupación entre los pacientes, los prescriptores, los dispensadores y las autoridades reguladoras. Las reacciones adversas son una causa importante no solo de consulta médica, sino también de ingreso hospitalario y en ocasiones muerte del paciente. Objetivo: evaluar el comportamiento de las notificaciones de reacciones adversas a medicamentos. Métodos: estudio retrospectivo, transversal y descriptivo. Se evaluaron las notificaciones de reacciones adversas a medicamentos desde el 2006 al 2012, a partir de los datos proporcionados por las notificaciones recibidas de hospitales y centros de salud, públicos y privados, de la provincia del Chaco, Argentina, como efectores periféricos del Sistema Nacional de Farmacovigilancia. Se calculó la tasa de notificación anual de estas por millón de habitantes. Resultados: se recibieron un total de 535 notificaciones de reacciones adversas a medicamentos, para un promedio de 77 notificaciones/año y una tasa de notificaciones de 73 por millón de habitantes. Se evidenció un comportamiento regular en algunos indicadores en todos los años, como son la preponderancia de reacciones adversas en el sexo femenino, los trastornos del sistema gastrointestinal y la piel entre los más informados y el predominio de los antibióticos b-lactámicos, IECA y AINE como grupos farmacológicos más notificados. En cuanto a la intensidad e imputabilidad predominaron las moderadas y probables respectivamente. Conclusión: si bien la tasa anual de notificaciones de reacciones adversas a medicamentos en Chaco, Argentina, es baja, los resultados obtenidos constituyen un aporte importante al conocimiento de esta en la referida región.

  5. Tungiosis adquirida en la provincia del Chaco, Argentina Tungiasis acquired in Chaco Province, Argentina

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    C. I. Menghi

    2009-09-01

    Full Text Available Una niña de 4 años y su madre concurrieron al Hospital de Clínicas por lesiones de 0,7 cm de diámetro con un centro negro y un halo hiperqueratósico blanquecino, de catorce días de evolución. La niña presentaba estas lesiones en los dedos segundo y cuarto del pie; y la madre en el talón. Como antecedentes figuraban un viaje a la provincia del Chaco y el hábito de caminar descalzas. Se realizó un corte de la lesión, un tratamiento antiséptico y se procedió a su limpieza. El contenido extraído se remitió al laboratorio de Parasitología para el diagnóstico. Al microscopio óptico (100 X se observaron porciones de un artrópodo con numerosos huevos característicos de Tunga penetrans. Las pacientes recibieron antibioticoterapia e inmunización antitetánica. La tungiosis es una parasitosis cutánea originaria de América causada por T. penetrans. En zonas endémicas de este parásito es recomendable la utilización de calzado cerrado para evitar la penetración de la pulga en la piel. Debe sospecharse la presencia de tungiosis ante la aparición de lesiones negruzcas, hiperqueratósicas, principalmente en las zonas sub y periungueales, las plantas, los tobillos o los talones de los pies.A four - year old girl and her mother were assisted at the Hospital de Clínicas for 0.7 cm wide papules with a black central core and a white hyperkeratotic halo of fourteen days of development. The girl presented these lesions on the second and fourth toe of one of her feet, and her mother on the ankle. Among the known antecedents were a trip to Chaco Province and their habit of walking barefooted. After the papule incision, both antiseptic treatment and cleaning of the lesion, were performed. The exudate extracted from the wound was sent to the Parasitology laboratory for diagnosis. With low-power amplification (100 X, portions of an arthropod with numerous characteristic Tunga penetrans eggs were identified. The patients received antibiotic

  6. Termite (Insecta, Isoptera) assemblage of a gallery forest relic from the Chaco province (Argentina): taxonomic and functional groups

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    Godoy, M. C.; Laffont, E. R.; Coronel, J. M.; Etcheverry, C.

    2012-01-01

    Comunitat de tèrmits (Insecta, Isoptera) d’un relicte de selva en galeria del Chaco (Argentina): grups taxonòmics i funcionals Es va analitzar la termitofauna de la selva en galeria de la Reserva Colonia Benítez (província del Chaco, Argentina) mitjançant el protocol d’estimació de la diversitat d’isòpters (transsectes de 100 x 2 m). Es van detetcar 12 espècies incloses en 10 gèneres i dues famílies (Kalotermitidae i Termitidae) pertanyents als quatre grups de tèrmits establerts en funció ...

  7. The role of small woodland remnants on ground dwelling insect conservation in Chaco Serrano, Central Argentina.

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    Moreno, María Laura; Fernández, María Guadalupe; Molina, Silvia Itati; Valladares, Graciela

    2013-01-01

    Many terrestrial ecosystems are changing due to extensive land use and habitat fragmentation, posing a major threat to biodiversity. In this study, the effects of patch size, isolation, and edge/interior localization on the ground dwelling insect communities in the Chaco Serrano woodland remnants in central Argentina were examined. Sampling was carried out in December 2003 and March 2004 in nine remnants (0.57 to 1000 hectares) using pitfall traps. In total, 7071 individuals representing 12 orders and 79 families were recorded. The taxonomic composition of these communities was linked to remnant size. Insect abundance increased (as did their richness, albeit marginally) as remnant area decreased, with no significant effects of isolation or edge/interior localization on abundance, richness, or diversity. No differential area effects were observed when abundance and richness of predators, scavengers, and herbivores were compared. Thus, ground insect communities in fragmented Chaco Serrano seem to respond mainly to patch level, rather than to within-patch (edge effects) or landscape (isolation) level variables. These results suggest that small Chaco Serrano remnants, by supporting larger ground-dwelling insect assemblages, may play an important role from a conservation viewpoint.

  8. The presence of species of Pseudochironomus Malloch 1915 (Diptera: Chironomidae) in watercourses of Chaco Serrano Ecoregion (Argentina, South America).

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    Paggi, Analía C; Rodriguez Garay, Gretel N

    2015-05-15

    Male imagos of Pseudochironomus viridis (Kieffer) are redescribed, the immature stages are described and figured for the first time. During this study, larva and pupal exuviae associated to P. richardsoni (Malloch) were recorded for the first time for South America. The specimens were collected from a stream and a river in the Pampasic Hills System in the Chaco Serrano ecoregion of Argentina.

  9. [Presence of Legionella spp. in household drinking water reservoirs in Resistencia, Chaco, Argentina. Preliminary report].

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    Lösch, Liliana S; Merino, Luis A

    Legionella spp. is an environmental bacterium that can survive in a wide range of physicochemical conditions and may colonize distribution systems of drinking water and storage tanks. Legionella pneumophila is the major waterborne pathogen that can cause 90% of Legionnaires' disease cases. The aim of this study was to detect the presence of Legionella spp. in household drinking water tanks in the city of Resistencia, Chaco. The detection of Legionella in water samples was performed by culture methods as set out in ISO 11731:1998. Thirty two water samples were analyzed and Legionella spp. was recovered in 12 (37.5%) of them. The monitoring of this microorganism in drinking water is the first step towards addressing the control of its spread to susceptible hosts. Copyright © 2016 Asociación Argentina de Microbiología. Publicado por Elsevier España, S.L.U. All rights reserved.

  10. El suelo urbano y los asentamientos informales en el gran resistencia. 1. Chaco, Argentina

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    María Cristina Magnano

    2005-01-01

    Full Text Available En el artículo se describe un creciente proceso de ocupaciones ilegales de terrenos por parte de familias sin hogar en Gran Resistencia del Chaco, Argentina. Luego la ocupación es seguida por gestiones legislativas que traspasan al Estado la responsabilidad de expropiar en beneficio de las familias ocupantes. La realidad demuestra que este último no ejecuta sus compromisos legales por carencia de recursos, con el agravante que los precarios presupuestos habitacionales locales no sólo son disminuidos, sino que en los últimos años se han suprimido varios, dejando sin atención necesidades urgentes de las familias sin casa. Los autores concluyen el artículo proponiendo un temario a debatir públicamente en torno las situaciones más críticas, urgentes y de interés local con la participación de todos los sectores vigentes de la institucionalidad.

  11. A Multivariate Approach to Study Drivers of Land-Cover Changes through Remote Sensing in the Dry Chaco of Argentina

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    Laura E. Hoyos; Marcelo R. Cabido; Ana M. Cingolani

    2018-01-01

    Land-cover changes are driven by different combinations of biophysical, economic, and cultural drivers that are acting at different scales. We aimed to (1) analyze trends in land use and land cover changes (conversion, abandonment, forest persistence) in the dry Chaco in central Argentina (1979 to 2010), and (2) examine how physical and socio-economic drivers have influenced those changes. Based on Landsat data, we obtained the proportion of 16 classes of land cover changes for 81 individual ...

  12. Effects of the herbicide glyphosate on non-target plant native species from Chaco forest (Argentina).

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    Florencia, Ferreira María; Carolina, Torres; Enzo, Bracamonte; Leonardo, Galetto

    2017-10-01

    Agriculture based on transgenic crops has expanded in Argentina into areas formerly occupied by Chaco forest. Even though glyphosate is the herbicide most widely used in the world, increasing evidence indicates severe ecotoxicological effects on non-target organisms as native plants. The aim of this work is to determine glyphosate effects on 23 native species present in the remaining Chaco forests immersed in agricultural matrices. This is a laboratory/greenhouse approach studying acute effects on seedlings after 21 days. A gradient of glyphosate rates (525, 1050, 2100, 4200, and 8400g ai/Ha; recommended field application rate (RFAR) = 2100g ai/Ha) was applied on four-week seedlings cultivated in a greenhouse and response variables (phytotoxicity, growth reduction, and sensitivity to the herbicide) were measured. This gradient of herbicide rates covers realistic rates of glyphosate applications in the crop field and also those that can reach vegetation of forest relicts by off-target drift and overspray. Testing was performed following guidelines for vegetative vigour (post-germination spray). All species showed lethal or sublethal effects after the application of the 25% of RFAR (50% of species showed severe phytotoxicity or death and 70% of species showed growth reduction). The results showed a gradient of sensitivity to glyphosate by which some of the studied species are very sensitive to glyphosate and seedlings died with 25% of RFAR while other species can be classified as herbicide-tolerant. Thus, the vegetation present in the forest relicts could be strongly affected by glyphosate application on crops. Lethal and sublethal effects of glyphosate on non-target plants could promote both the loss of biodiversity in native forest relicts immersed in the agroecosystems and the selection of new crop weeds considering that some biotypes are continuously exposed to low doses of glyphosate. Copyright © 2017 Elsevier Inc. All rights reserved.

  13. Disentangling the effects of shrubs and herbivores on tree regeneration in a dry Chaco forest (Argentina).

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    Tálamo, Andrés; Barchuk, Alicia H; Garibaldi, Lucas A; Trucco, Carlos E; Cardozo, Silvana; Mohr, Federico

    2015-07-01

    Successful persistence of dry forests depends on tree regeneration, which depends on a balance of complex biotic interactions. In particular, the relative importance and interactive effects of shrubs and herbivores on tree regeneration are unclear. In a manipulative study, we investigated if thornless shrubs have a direct net effect, an indirect positive effect mediated by livestock, and/or an indirect negative effect mediated by small vertebrates on tree regeneration of two key species of Chaco forest (Argentina). In a spatial association study, we also explored the existence of net positive interactions from thorny and thornless shrubs. The number of Schinopsis lorentzii seedlings was highest under artificial shade with native herbivores and livestock excluded. Even excluding livestock, no seedlings were found with natural conditions (native herbivores present with natural shade or direct sunlight) at the end of the experiment. Surprisingly, seedling recruitment was not enhanced under thornless shrubs, because there was a complementary positive effect of shade and interference. Moreover, thornless shrubs had neither positive nor negative effects on regeneration of S. lorentzii. Regeneration of Aspidosperma quebracho-blanco was minimal in all treatments. In agreement with the experiment, spatial distributions of saplings of both tree species were independent of thornless shrubs, but positively associated with thorny shrubs. Our results suggest that in general thornless shrubs may have a negligible effect and thorny shrubs a net positive effect on tree regeneration in dry forests. These findings provide a conceptual framework for testing the impact of biotic interactions on seedling recruitment in other dry forests.

  14. Helechos y licofitos de la Reserva Natural Educativa Colonia Benítez (Chaco, Argentina

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    Bruno Dematteis

    2015-01-01

    Full Text Available La Reserva Natural Educativa Colonia Benítez cuenta con una superficie aproximada de ocho ha, está ubicada en el departamento Primero de Mayo, en la provincia del Chaco, Argentina. Desde el punto de vista fitogeográfico, esta área protegida se localiza dentro del Distrito Chaqueño Oriental de la Provincia Chaqueña. Como objetivos de este trabajo se planteó realizar un inventario de helechos y licofitos y una clave para el reconocimiento de los taxa que crecen en esta reserva. A tal fin, se examinaron las colecciones depositadas en CTES, y se realizaron nuevas recolecciones de especímenes. Se registraron 12 géneros con un total de 17 especies, siendo Doryopteris el género mejor representado con tres especies: D. concolor, D. lorentzii y D. pentagona. El género Adiantopsis presentó dos especies (A. chlorophylla y A. tweediana, al igual que Anemia con (A. simplicior y A. tomentosa var. anthriscifolia y Pteris (Pteris denticulata var. tristicula y Pteris vittata. Los demás géneros presentaron sólo una especie: Adiantum lorentzii, Anogramma chaerophylla, Azolla cristata, Hemionitis tomentosa, Microgramma vaccinifolia, Pityrogramma calomelanos var. calomelanos, Pleopeltis minima y Selaginella sellowii. El hábito terrícola fue el mejor representado con 12 especies, de las cuales una de ellas es rupícola y otras tres se pueden comportar como epífitos facultativos, en tanto que los estrictamente epífitos fueron representados por sólo dos especies. Azolla cristata fue la única especie acuática presente. Se presentan observaciones ecológicas y un análisis biogeográfico de las especies registradas

  15. Analysis of Population Substructure in Two Sympatric Populations of Gran Chaco, Argentina

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    Sevini, Federica; Yao, Daniele Yang; Lomartire, Laura; Barbieri, Annalaura; Vianello, Dario; Ferri, Gianmarco; Moretti, Edgardo; Dasso, Maria Cristina; Garagnani, Paolo; Pettener, Davide; Franceschi, Claudio; Luiselli, Donata; Franceschi, Zelda Alice

    2013-01-01

    Sub-population structure and intricate kinship dynamics might introduce biases in molecular anthropology studies and could invalidate the efforts to understand diseases in highly admixed populations. In order to clarify the previously observed distribution pattern and morbidity of Chagas disease in Gran Chaco, Argentina, we studied two populations (Wichí and Criollos) recruited following an innovative bio-cultural model considering their complex cultural interactions. By reconstructing the genetic background and the structure of these two culturally different populations, the pattern of admixture, the correspondence between genealogical and genetic relationships, this integrated perspective had the power to validate data and to link the gap usually relying on a singular discipline. Although Wichí and Criollos share the same area, these sympatric populations are differentiated from the genetic point of view as revealed by Non Recombinant Y Chromosome genotyping resulting in significantly high Fst values and in a lower genetic variability in the Wichí population. Surprisingly, the Amerindian and the European components emerged with comparable amounts (20%) among Criollos and Wichí respectively. The detailed analysis of mitochondrial DNA showed that the two populations have as much as 87% of private haplotypes. Moreover, from the maternal perspective, despite a common Amerindian origin, an Andean and an Amazonian component emerged in Criollos and in Wichí respectively. Our approach allowed us to highlight that quite frequently there is a discrepancy between self-reported and genetic kinship. Indeed, if self-reported identity and kinship are usually utilized in population genetics as a reliable proxy for genetic identity and parental relationship, in our model populations appear to be the result not only and not simply of the genetic background but also of complex cultural determinants. This integrated approach paves the way to a rigorous reconstruction of

  16. Deforestation impacts on soil organic carbon stocks in the Semiarid Chaco Region, Argentina.

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    Villarino, Sebastián Horacio; Studdert, Guillermo Alberto; Baldassini, Pablo; Cendoya, María Gabriela; Ciuffoli, Lucía; Mastrángelo, Matias; Piñeiro, Gervasio

    2017-01-01

    Land use change affects soil organic carbon (SOC) and generates CO 2 emissions. Moreover, SOC depletion entails degradation of soil functions that support ecosystem services. Large areas covered by dry forests have been cleared in the Semiarid Chaco Region of Argentina for cropping expansion. However, deforestation impacts on the SOC stock and its distribution in the soil profile have been scarcely reported. We assessed these impacts based on the analysis of field data along a time-since-deforestation-for-cropping chronosequence, and remote sensing indices. Soil organic C was determined up to 100cm depth and physically fractionated into mineral associated organic carbon (MAOC) and particulate organic C (POC). Models describing vertical distribution of SOC were fitted. Total SOC, POC and MAOC stocks decreased markedly with increasing cropping age. Particulate organic C was the most sensitive fraction to cultivation. After 10yr of cropping SOC loss was around 30%, with greater POC loss (near 60%) and smaller MAOC loss (near 15%), at 0-30cm depth. Similar relative SOC losses were observed in deeper soil layers (30-60 and 60-100cm). Deforestation and subsequent cropping also modified SOC vertical distribution. Soil organic C loss was negatively associated with the proportion of maize in the rotation and total crop biomass inputs, but positively associated with the proportion of soybean in the rotation. Without effective land use polices, deforestation and agricultural expansion can lead to rapid soil degradation and reductions in the provision of important ecosystem services. Copyright © 2016 Elsevier B.V. All rights reserved.

  17. Fotografía, testimonio oral y memoria: (Re Presentaciones de indígenas e inmigrantes del Chaco (Argentina

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    Mariana Giordano

    2012-12-01

    Full Text Available Este artículo propone un análisis de las representaciones visuales sobre indígenas e inmigrantes del Territorio Nacional del Chaco (Argentina, a partir de las huellas de enunciación y las narrativas visuales que se construyeron en/a través de la fotografía. Las lecturas actuales de ese corpus fotográfico, desde experiencias de recepción, permiten que el testimonio oral actualice las percepciones históricas. Con ello buscamos explorar, por un lado, cómo es representado cada grupo socio-étnico y de qué modo esas representaciones se convierten en memorias visuales de sus comunidades. Por el otro, procuramos indagar sobre las correspondencias y/o contradicciones entre lo que las narrativas fotográficas históricas (representan, como referentes de memorias visuales, y lo que los receptores actuales identifican o (desconocen, como parte de memorias identitarias en construcción, en una Provincia que desde el discurso político-cultural se busca mostrar como un crisol de raza.This paper analyses the visual representations of indigenous and immigrants located on Territorio Nacional del Chaco (National Territory of Chaco, Argentina, based on traces of enunciation and visual narratives constructed in/ through photography. The current readings of this photographic material, from experiences of reception, allowed the updating of historical perceptions through the oral testimony. In this way, we first explore how each ethnic group is represented and how these representations became visual memories of their communities. Furthermore, we search for correlations or contradictions between what the historical photographic narratives (represented, as references of visual memory, and what current receivers identify o do not acknowledge as part of their identities and memories under construction, in a Province considered a melting pot by the political and cultural discourse.

  18. Nesting biology of four species of Trypoxylon (Trypargilum (Hymenoptera: Crabronidae in Chaco Serrano woodland, Central Argentina

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    Mariana L Musicante

    2010-12-01

    Full Text Available Trypoxylon (Trypargilum (Crabronidae wasps are solitary spider predators that can build their nests in artificial trap-nests, which enables study of their nesting architecture and biology. Twenty traps (each containing 15-30 internodes of cane were placed in each of nine sites of Chaco Serrano Woodland in Central Argentina (Córdoba in October 2005, and were recovered in June 2006. We obtained 91 nests of four species of Trypoxylon (Trypargilum. In the laboratory, each Trypoxylon nest was sectioned longitudinally to study its architecture. The number of brood cells was counted, and the occurrence and length of vestibular and intercalary cells and the pre-closing plug space were recorded. We measured the diameter of the cane entrance, total length of the nest, length of each brood cell, maximum thickness of mud partitions and closing plug thickness. We also recorded the cell contents: the wasps, their natural enemies and the prey spiders. Mortality was assessed and the sex ratio calculated for each species. Finally, the nests were examined to help clarify the function of the vestibular cell. The nest architecture was similar in the four species, with linear brood cells located one after the other separated by mud partitions, as in other species of the subgenus Trypargilum. Forty-eight percent of the nests had vestibular cells, but only two had intercalary cells. The thickness of the mud partitions and the length of the brood cells differed among species and were related to the size of the emerged wasp. The diameter of the nest entrance was directly related to the average length of the fore-tibia. Sex ratios of all species did not deviate from 0.5. Mortality due to parasitoids (Eulophidae; Melittobia sp. was similar among species, while the mortality due to cuckoo wasps (Chrysididae in T. lactitarse was higher than in the other species. The presence of vestibular cells was not related either to the mortality due to natural enemies or to the

  19. Distribution and importance of the family anacardiaceae timber in The Gran Chaco of Argentina

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    Claudia Verónica Luna

    2012-09-01

    Full Text Available The Gran Chaco is the second green support continent presents an alarming loss of biodiversity, on the other hand, the short-termconservation of such valuable species as are the representatives of the family Anacardiaceae, are uncertain, in spite be invaluable participation in native forest ecosystems, lack of resource management for years has put at risk many species, moving to integrate the IUCN Red List (International Union for Conservation of Nature. This work, through an extensive literature review, aims to reassess the use and importance of the Anacardiaceae family components that are widely distributed in the Gran Chaco Argentino.

  20. Nesting biology of four species of Trypoxylon (Trypargilum (Hymenoptera: Crabronidae in Chaco Serrano woodland, Central Argentina

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    Mariana L Musicante

    2010-12-01

    Full Text Available Trypoxylon (Trypargilum (Crabronidae wasps are solitary spider predators that can build their nests in artificial trap-nests, which enables study of their nesting architecture and biology. Twenty traps (each containing 15-30 internodes of cane were placed in each of nine sites of Chaco Serrano Woodland in Central Argentina (Córdoba in October 2005, and were recovered in June 2006. We obtained 91 nests of four species of Trypoxylon (Trypargilum. In the laboratory, each Trypoxylon nest was sectioned longitudinally to study its architecture. The number of brood cells was counted, and the occurrence and length of vestibular and intercalary cells and the pre-closing plug space were recorded. We measured the diameter of the cane entrance, total length of the nest, length of each brood cell, maximum thickness of mud partitions and closing plug thickness. We also recorded the cell contents: the wasps, their natural enemies and the prey spiders. Mortality was assessed and the sex ratio calculated for each species. Finally, the nests were examined to help clarify the function of the vestibular cell. The nest architecture was similar in the four species, with linear brood cells located one after the other separated by mud partitions, as in other species of the subgenus Trypargilum. Forty-eight percent of the nests had vestibular cells, but only two had intercalary cells. The thickness of the mud partitions and the length of the brood cells differed among species and were related to the size of the emerged wasp. The diameter of the nest entrance was directly related to the average length of the fore-tibia. Sex ratios of all species did not deviate from 0.5. Mortality due to parasitoids (Eulophidae; Melittobia sp. was similar among species, while the mortality due to cuckoo wasps (Chrysididae in T. lactitarse was higher than in the other species. The presence of vestibular cells was not related either to the mortality due to natural enemies or to the

  1. Presence of trace elements in fishes from the Chaco-Pampeana plain (Argentina

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    Alejandra V. Volpedo

    2015-06-01

    Full Text Available The Chaco-Pampean plain is one of the greatest plains worldwide; present a wetland macro system (lagoons, marshes, rivers, streams, channels. The water quality of these environments is diverse and has different trace elements natural (As, F, Mo and V and anthropogenic (Cr, Cu and Pb. The Chaco Pampean plain has an important diversity of fish species however the species of commercial importance are limited. This paper presents the reviews of the studies related to the presence of trace elements in tissues of commercial fishes (shad Prochilodus lineatus and silversides Odontesthes bonariensis in the Chaco-Pampean plain in recent decades and a discussion about associated information gaps is presented. The presence of trace elements in commercial fish muscle is a major problem for food security. The results showed that most of the elements present in shad are in lower levels than the maximum limits set by the Argentine Food Code (CAA, 2014. In the case of Pb present in the muscle of the shad, the determined values exceed those considered by the European Food Safety Authority. In the case of silversides the values of As, Pb, Hg are mostly lower than those maximum recommended by the Argentine Food Code. However, according to the European Food Safety Authority, the lower limit on the benchmark dose for a 10% response (BMDL values associated with health risk for As.

  2. Políticas misionales anglicanas en el Chaco Centro-Occidental a principios del siglo XX: entre comunicades e identidades diversas.

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    Torres Fernández, Patricia

    2007-01-01

    Full Text Available It aims to contribute to the study of the formation processes of indigenous groups of Center West Chaco in the context of consolidation of the Argentine national– state in the early twentieth century considering the disciplining social policies-in the areas of education, health, work and evangelization –through which Anglican missionaries, as brokers, generate incorporation and alterization dynamics of native populations over various communities with varying degrees of social aggregation.

  3. Geographical Variation of Deltamethrin Susceptibility of Triatoma infestans (Hemiptera: Reduviidae) in Argentina With Emphasis on a Resistant Focus in the Gran Chaco.

    Science.gov (United States)

    Fronza, G; Toloza, A C; Picollo, M I; Spillmann, C; Mougabure-Cueto, G A

    2016-07-01

    Chagas disease is one of the most important parasitic infections in Latin America. The main vector of the protozoan Trypanosoma cruzi in America is Triatoma infestans, a blood-sucking triatomine bug who is widely distributed in the Gran Chaco ecoregion. Control programs in endemic countries are focused in the elimination of triatomine vectors with pyrethroid insecticides. However, chemical control has failed in the Gran Chaco over the last two decades because of several factors. Previous studies have reported the evolution of different levels of resistance to deltamethrin in Tri. infestans Recently, very high resistance has been found in the central area of the Argentine Gran Chaco. However, the origin and the extension of this remarkably resistant focus remain unknown. The aim of this study was to evaluate the geographical variation of deltamethrin susceptibility of Tri. infestans in different endemic provinces of Argentina, with emphasis in the center of the Argentine Gran Chaco ecoregion where this main vector has not been reduced. Populations of Mendoza, San Juan, Santiago del Estero, and Tucumán provinces were all susceptible. Resistant populations were only detected in the province of Chaco, where a mosaic resistant focus was described at the Güemes Department. It was characterized into three pyrethroid resistance categories: susceptible, low, and highly resistant populations. We found the populations with the highest resistance levels to deltamethrin, with resistant ratios over 1000. © The Authors 2016. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  4. New structures for goat corrals to control peridomestic populations of Triatoma infestans (Hemiptera: Reduviidae in the Gran Chaco of Argentina

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    David Eladio Gorla

    2013-05-01

    Full Text Available Goat production is an important economic activity for rural communities in the Gran Chaco of Argentina. Goat corrals are important for the survival of peridomestic populations of Triatoma infestans. This study evaluated the impact of modifying the traditional structure of goat corrals on T. infestans populations and goat productivity in the region of Los Llanos (La Rioja. Thirty-nine experimental corrals were constructed and 57 traditional corrals were used as controls. We evaluated the infestations of the control and experimental corrals for five years following construction of the structures. The results showed that the new structures did not prevent the colonization, although it enhanced the detection of infestation at low densities of T. infestans. No significant difference was found in T. infestans population abundance between control and experimental corrals, probably because of the different detectability in the two types of structures, especially among the small nymphs. Although goat productivity average was higher in experimental than in control corrals, no significant difference was found because of high variability. The new structures can be used as a complement to promote the development of rural communities. Acceptability and adoption of the new corrals by the owners was high, as the enclosures offered better protection for the goats, increased growth of kids and facilitated herd handling.

  5. A Multivariate Approach to Study Drivers of Land-Cover Changes through Remote Sensing in the Dry Chaco of Argentina

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    Laura E. Hoyos

    2018-05-01

    Full Text Available Land-cover changes are driven by different combinations of biophysical, economic, and cultural drivers that are acting at different scales. We aimed to (1 analyze trends in land use and land cover changes (conversion, abandonment, forest persistence in the dry Chaco in central Argentina (1979 to 2010, and (2 examine how physical and socio-economic drivers have influenced those changes. Based on Landsat data, we obtained the proportion of 16 classes of land cover changes for 81 individual circular samples. We performed a Principal Component Analysis (PCA to identify the main trends of change across the whole region. To explore the relationships between the changes in land cover and drivers, we developed a GIS comprising thematic maps representing the different drivers. The drivers were first correlated with the two first PCA axes, and in a second approximation were subjected to multiple regression analyses. We obtained in this way the best model to explain each PCA axis. The highest conversion, as indicated by PCA axis 1, was experienced by flat areas close to roads and with the highest annual rainfall. Besides agricultural expansion that was triggered by precipitation increase as a major driver of forest conversion, changes that were observed during the period 1979–2010, may have also been influenced by several other driving forces acting at different spatial scales and contexts.

  6. Language Dispute and Social Change in New Multilingual Institutions in Chaco, Argentina

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    Unamuno, Virginia

    2014-01-01

    Intercultural bilingual education (IBE) programmes in Latin America pose interesting questions for sociolinguistics, since their implementation interrogates the link between language and the nation resulting from the emergence of nation-states, but also from processes of decolonization. In the case of Argentina, a new legal framework and the…

  7. Lama guanicoe remains from the Chaco ecoregion (Córdoba, Argentina): An osteological approach to the characterization of a relict wild population.

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    Costa, Thiago; Barri, Fernando

    2018-01-01

    Guanacos (Lama guanicoe) are large ungulates that have been valued by human populations in South America since the Late Pleistocene. Even though they were very abundant until the end of the 19th century (before the high deforestation rate of the last decades), guanacos have nearly disappeared in the Gran Chaco ecoregion, with relicts and isolated populations surviving in some areas, such as the shrubland area near the saline depressions of Córdoba province, Argentina. In this report, we present the first data from a locally endangered guanaco wild population, through the study of skeletal remains recovered in La Providencia ranch. Our results showed that most of the elements belonged to adults aged between 36 and 96 months; sex evaluation showed similar numbers of males and females. Statistical analysis of the body size of modern samples from Córdoba demonstrated that guanacos from the Chaco had large dimensions and presented lower size variability than the modern and archaeological specimens in our database. Moreover, they exhibited dimensions similar to those of modern guanacos from Patagonia and San Juan, and to archaeological specimens from Ongamira and Cerro Colorado, although further genetic studies are needed to corroborate a possible phylogenetic relationship. Finally, we used archaeozoological techniques to provide a first characterization of a relict guanaco population from the Chaco ecoregion, demonstrating its value to the study of modern skeletal remains and species conservation biology.

  8. La dificultad probatoria en el proceso laboral en el Chaco, Argentina

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    Jorge Gustavo Dahlgren

    2017-11-01

    Full Text Available El presente trabajo tiene la finalidad de conocer algunas características especiales de la valoración de la prueba de difícil producción e interpretación dentro del proceso laboral, dando especial atención a precedentes judiciales de la Provincia del Chaco y en tal sentido se acudió a pautas, utilizadas tanto por la jurisprudencia como la doctrina, local y nacional, destacables y relevantes para la formación de criterio para la interpretación de normas adjetivas que fueron. En este ámbito imperan principios rectores distintos a otras ramas del derecho, con motivo de dar importancia a protección de supuesto trabajador demandado y la necesidad de dar trascendencia a la realidad subyacente del vínculo laboral, que en variadas ocasiones se encuentra disimulado bajo el disfraz de otras figuras jurídicas. Básicamente la legislación laboral de fondo tiene prevista las presunciones básicas para la determinación del vínculo laboral, sin embargo cuando nos encontramos en presencia de complejidades probatorias, podemos advertir la existencia las presunciones específicas para la demostración de determinados hechos tales como el accidente de trabajo o enfermedades profesionales, algunas comprobaciones de vínculos laborales disimulados, entre otros. No encontrándose expresamente previstas estas presunciones específicas en la ley, resulta necesario echar luz sobre la cuestión, acudiendo al análisis de distintos precedentes jurisprudenciales, de acuerdo a la valoración de los diversos medios probatorios, tal como se expone a continuación.

  9. Relación entre condiciones habitacionales y mortalidad infantil en la provincia del Chaco (argentina. Determinación de diferentes escenarios posibles

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    Blanca Elizabeth Ponce

    2012-01-01

    Full Text Available Las condiciones de la vivienda han sido reconocidas como una de las principales determinantes sociales de la salud humana. Las deficiencias en la vivienda y el saneamiento constituyen un determinante reiterado del exceso de mortalidad y una característica sistemáticamente vinculada a los niveles de pobreza, el rezago socioeconómico y la inequidad territorial en América Latina y el Caribe. El presente trabajo tiene como objetivo obtener una clasificación de las áreas programáticas de la provincia del Chaco en función de sus características habitacionales y niveles de mortalidad infantil; mediante el análisis de componentes principales y el análisis de cluster. La provincia del Chaco, se sitúa en el nordeste de la República Argentina e integra la región del Norte Grande Argentino. Geopolíticamente pertenece a un área periférica, con una débil y estacionaria economía, ubicándose entre las provincias más deficitarias.

  10. Spatiotemporal flooding fluctuation analysis: wetland managment Bañado La Estrella, Chaco región, Argentina

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    Gómez Romina, Díaz; Cuellar, Ana Carolina; Brown, Alejandro

    2016-01-01

    The wetlands are widely distributed over the Chaco region. Despite their wide territorial extension and major functional role, Bañado la Estella wetlands have not been appropriately mapped, and this is not a protected area nowadays. Wetlands are ecosystems that depend on periodical flooding, which determine the presence of soils with hydromorphic features and species adapted to permanent or temporary flooding conditions.The bed of the Pilcomayo River began regressing to the west about 30 year...

  11. COMPOSICIÓN DEL ENSAMBLE DE INSECTOS DEL DOSEL DE BOSQUES SUBTROPICALES SECOS DEL CHACO SEMIÁRIDO, ARGENTINA

    OpenAIRE

    Liliana Diodato; Andrea Fuster

    2016-01-01

    El dosel arbóreo constituye un complejo hábitat con gran diversidad de insectos. Los estudios sobre insectos del dosel están mayormente concentrados en bosques húmedos tropicales y son escasos en bosques secos subtropicales. El propósito de este trabajo fue caracterizar la entomofauna del dosel de bosques secos subtropicales, analizando su diversidad regional y localmente. Para ello se muestrearon cinco sitios localizados en la región fitogeográfica del Chaco Semiárido Argentino. Las recolecc...

  12. Provenance and fate of arsenic and other solutes in the Chaco-Pampean Plain of the Andean foreland, Argentina: From perspectives of hydrogeochemical modeling and regional tectonic setting

    Science.gov (United States)

    Raychowdhury, Nilasree; Mukherjee, Abhijit; Bhattacharya, Prosun; Johannesson, Karen; Bundschuh, Jochen; Sifuentes, Gabriela Bejarano; Nordberg, Erika; Martin, Raúl A.; Storniolo, Angel del Rosario

    2014-10-01

    Extensive arsenic (As) enriched groundwater is known to occur in the aquifers of the Chaco-Pampean Plain of Argentina. Previous studies speculated that the As mobilization in these groundwaters was a direct result of their elevated pH and oxidative conditions. The volcanic glass layers present in the aquifer matrix were hypothesized as one of the possible sources of As to the groundwaters. Here, we examine the groundwater chemistry of the Santiago del Estero province of Chaco-Pampean Plains of Argentina, and test these hypotheses by using hydrogeochemical modeling within the framework of the regional geologic-tectonic setting. The study area is located in the active foreland of the Andean orogenic belt, which forms a continental arc setting, and is dotted with several hot springs. Rhyolitic volcanic glass fragments derived from arc volcanism are abundant within the aeolian-fluvial aquifer sediments, and are related to the paleo-igneous extrusion in the vicinity. Hydrogeochemical analyses show that the groundwater is in predominantly oxidative condition. In addition, some of the groundwaters exhibit very high Na, Cl- and SO42- concentrations. It is hypothesized in this study that the groundwater chemistry has largely evolved by dissolution of rhyolitic volcanic glass fragments contained within the aquifer sediments along with mixing with saline surface waters from, adjoining salinas, which are thought to be partially evaporated remnants of a paleo inland sea. Flow path modeling, stability diagrams, and thermodynamic analyses undertaken in this study indicate that the dominant evolutionary processes include ion exchange reactions, chemical weathering of silicate and evaporites, in monosialitization-dominated weathering. Geochemical modeling predicts that plagioclase feldspar and volcanic glass are the major solids phases that contribute metal cations and dissolved silica to the local groundwaters. Co-influxed oxyanions, with similar ionic radii and structure (e.g. Mo

  13. Comunidad de escarabajos copronecrófagos (Coleoptera: Scarabaeidae en dos bosques del Chaco Oriental Húmedo, Argentina Copro-necrophagous beetle community (Coleoptera: Scarabaeidae in two forests from Eastern Humid Chaco, Argentina

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    Miryam P. Damborsky

    2008-06-01

    Full Text Available Se investigó y comparó la estructura de la comunidad de Scarabaeinae en dos ambientes con distinto grado de conservación. Se efectuaron muestreos en un bosque nativo del Parque Provincial Pampa del Indio y en un fragmento de bosque del establecimiento ganadero Los Alisos. Los ejemplares se capturaron con coprotrampas y necrotrampas que permanecieron activas durante 72 horas, en los meses de octubre, noviembre y diciembre de 2006. Se colectaron 769 individuos adultos pertenecientes a seis tribus, 11 géneros y 26 especies. En Los Alisos Ontherus sulcatus Fabricius y Onthophagus hirculus Mannerheim resultaron dominantes. Trichillum sp., Canthon podagricus Harold, Malagoniella sp., Gromphas lacordairei Brullé, y dos especies de Dichotomius Hope fueron exclusivas de este establecimiento. Canthon septemmaculatus Latreille y Coprophanaeus jasius Olivier sólo se colectaron en Pampa del Indio. El número de individuos y la diversidad alcanzaron valores significativamente superiores en Pampa del Indio. En Los Alisos, se constató igual proporción de coprófagos y necrófagos, y una mayoría de especies con hábitos endocópridos y paracópridos. En Pampa del Indio, se encontraron más especies de hábitos necrófagos y rodadores. La presente contribución constituye el primer estudio sobre la biodiversidad de Scarabaeinae en el ambiente de bosque de la provincia del Chaco.Scarabaeinae community structure was compared in two habitats with different degrees of conservation: a native forest at Pampa del Indio Provincial Park, and a forest fragment at Los Alisos cattle farm. Pitfall traps baited with carrion and cattle dung were left open for 72-hour periods in October, November and December 2006. 769 adults belonging to six tribes, 11 genera and 26 species were captured in all. At Los Alisos, Ontherus sulcatus Fabricius and Onthophagus hirculus Mannerheim were the dominant species. Trichillum sp., Canthon podagricus Harold, Malagoniella sp., Gromphas

  14. Comunidad de escarabajos copronecrófagos (Coleoptera: Scarabaeidae en dos bosques del Chaco Oriental Húmedo, Argentina

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    Miryam P. DAMBORSKY

    2008-01-01

    Full Text Available Se investigó y comparó la estructura de la comunidad de Scarabaeinae en dos ambientes con distinto grado de conservación. Se efectuaron muestreos en un bosque nativo del Parque Provincial Pampa del Indio y en un fragmento de bosque del establecimiento ganadero Los Alisos. Los ejemplares se capturaron con coprotrampas y necrotrampas que permanecieron activas durante 72 horas, en los meses de octubre, noviembre y diciembre de 2006. Se colectaron 769 individuos adultos pertenecientes a seis tribus, 11 géneros y 26 especies. En Los Alisos Ontherus sulcatus Fabricius y Onthophagus hirculus Mannerheim resultaron dominantes. Trichillum sp., Canthon podagricus Harold, Malagoniella sp., Gromphas lacordairei Brullé, y dos especies de Dichotomius Hope fueron exclusivas de este establecimiento. Canthon septemmaculatus Latreille y Coprophanaeus jasius Olivier sólo se colectaron en Pampa del Indio. El número de individuos y la diversidad alcanzaron valores significativamente superiores en Pampa del Indio. En Los Alisos, se constató igual proporción de coprófagos y necrófagos, y una mayoría de especies con hábitos endocópridos y paracóprido En Pampa del Indio, se encontraron más especies de hábitos necrófagos y rodadores. La presente contribución constituye el primer estudio sobre la biodiversidad de Scarabaeinae en el ambiente de bosque de la provincia del Chaco.

  15. La transformación de "lo étnico" en producto turístico en la provincia de Chaco, Argentina A transformação do "étnico" em produto turístico na província de Chaco, Argentina The transformation of "the ethnic" in a tourist product in the province of Chaco, Argentina

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    Patricia Torres Fernández

    2010-06-01

    Full Text Available Hace unos años, la provincia del Chaco inició un proceso de "revalorización" de sus "culturas internas" para su apuesta a un turismo nacional que comenzaba a demandar destinos cada vez más especializados. En este proceso, echó mano de todos aquellos "elementos culturales" que, si no estaban ya transformados en atractivo turístico, pudieran convertirse en tales. En este escrito me focalizaré en el proceso que transforma "lo étnico" en producto turístico a partir de dos mecanismos: recategorizando las artesanías indígenas como patrimonio localizado y revalorizando a los pueblos indígenas como "patrimonio cultural viviente". En este clima de inflación patrimonial, "lo étnico" se trasforma en un producto turístico más de la oferta provincial. Analizaré el "turismo étnico" como praxis-sentido que coayuda a la conformación de un campo social en el cual "lo étnico" opera como dispositivo que incluye, demarca y excluye simultáneamente "múltiples formas de lo diferente".A alguns anos, a província do Chaco iniciou um processo de "revalorização" de sua "cultura interna", uma aposta ao turismo nacional que começou a demandar destinos cada vez mais especializados. Neste processo, abriu mão de todos aqueles "elementos culturais" que, se não estavam já transformados em atrativo turístico, pudeieran para ficar tal. Neste texto focalizarei no processo que transforma "o étnico" em produto turístico a partir de dois mecanismos: recategorização do artesanato indígena como patrimônio local e revalorização dos povos indígenas como "patrimônio cultural vivo". Neste clima de inflação patrimonial, "o étnico" transforma-se em mais um produto turístico na oferta provincial. Analisarei o "turismo étnico" como práxis sentido que colabora a conformação de um campo social no qual "o étnico" opera como dispositivo que inclui, define e exclui simultaneamente "múltiplas formas do diferente".A few years ago, the province of Chaco

  16. Nivel de sustentabilidad en pequeñas explotaciones sojeras del Chaco - Argentina. Rentabilidad y aceptación social

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    Susana Paulina Gusinsky de Gelman

    2015-02-01

    Full Text Available En el Chaco se conjugan, la importancia económica del cultivo de soja con la significación social de las pequeñas empresas agrícolas, predominantemente familiares. Es objetivo del presente trabajo, describir las condiciones de producción de soja evaluando el grado de sustentabilidad de las pequeñas empresas chaqueñas, particularmente: rentabilidad y aceptación social. Las decisiones metodológicas definieron un diseño no experimental, observacional, descriptivo, transversal y prospectivo, cuya recolección de datos se implementó con un cuestionario ad hoc. La muestra está integrada por 27 participantes escogidos en forma aleatoria de una población seleccionada de manera intencional. Los resultados se agrupan conforme las variables del estudio. Vinculado a rentabilidad, indican que el 59.26% de los productores está disconforme con el beneficio obtenido; un 29,63% contrata seguros agrícolas para gestionar el riesgo climático; y la comercialización se canaliza principalmente a través de acopiadores locales. El precio se fija teniendo como referencia la operatoria del mercado de cereales de Rosario, neto de costos de transporte e intermediación. El volumen de producción, representativo del rendimiento normal, es 2000 kg/ha (valor inferior a la media provincial. Respecto a aceptación social, la mayoría de los agricultores sojeros disponen de 120 hectáreas no propias, su familia no vive ni trabaja en el campo, hecho que impide desarrollar sentido de pertenencia y transferir el saber hacer. La ocupación es de una persona cada cien hectáreas cultivadas. Finalmente, se anhela que éste estudio, contribuya a una explotación sustentable y con la comunidad científico-profesional involucrada.

  17. Trade-offs between cattle production and bird conservation in an agricultural frontier of the Gran Chaco of Argentina.

    Science.gov (United States)

    Mastrangelo, Matias E; Gavin, Michael C

    2012-12-01

    Intensification of food production in tropical landscapes in the absence of land-use planning can pose a major threat to biological diversity. Decisions on whether to spatially integrate or segregate lands for production and conservation depend in part on the functional relations between biological diversity and agricultural productivity. We measured diversity, density, and species composition of birds along a gradient of production intensification on an agricultural frontier of the Argentine Chaco, where dry tropical forests are cleared for cattle production. Bird species diversity in intact forests was higher than in any type of cattle-production system. Bird species richness decreased nonlinearly as cattle yield increased. Intermediate-intensity silvopastoral systems, those in which forest understory is selectively cleared to grow pastures of non-native plants beneath the tree canopy, produced 80% of the mean cattle yield obtained in pastures on cleared areas and were occupied by 70-90% of the number of bird species present in the nearest forest fragments. Densities of >50% of bird species were significantly lower in open pastures than in silvopastoral systems. Therefore, intermediate-intensity silvopastoral systems may have the greatest potential to sustain cattle yield and conserve a large percentage of bird species. However, compared with low-intensity production systems, in which forest structure and extent were intact, intermediate-intensity silvopastoral systems supported significantly fewer forest-restricted bird species and fewer frugivorous birds. These data suggest that the integration of production and conservation through intermediate-intensity silvopastoral systems combined with the protection of forest fragments may be required to maintain cattle yield, bird diversity, and conservation of forest-restricted species in this agricultural frontier. ©2012 Society for Conservation Biology.

  18. Investigación etnográfica sobre infestaciones por geohelmintiasis en el Chaco-Salteño, Argentina

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    Pía Leavy

    2015-03-01

    Full Text Available Introducción: Se trata de una investigación antropológica que analiza los contextos socioambientales en una localidad del Chaco-Salteno argentino con altos niveles de prevalencia en geohelmintiasis. Objetivos: Describir y analizar los contextos socioambientales, las condiciones sanitarias y habitacionales y las percepciones de riesgo de la población afectada. Método: Se disenó a partir de un análisis crítico no exhaustivo de literatura epidemiológica sobre infestaciones parasitarias en territorio argentino. Se integraron técnicas cuantitativas (cuestionario semiestructurado sobre cuestiones habitacionales en una muestra no probabilística y cualitativas (entrevistas en profundidad a informantes claves y observación participante en actividades laborales, domésticas y espacios de atención a la salud. Resultados: la distribución de la tierra, los espacios a habitar, el acceso a agua potable y a las instalaciones sanitarias están vinculadas a las condiciones laborales. La población paciente realiza estrategias para el abastecimiento de agua y negocia la exposición a riesgos sanitarios. Conclusiones: El enfoque etnográfico provee información detallada sobre las prácticas sanitarias y la construcción local de los riesgos, asociada al género y la edad de la población afectada. El abordaje de las dimensiones sociales, económicas y físicas de los suelos, permite problematizar las concepciones de salud y ambiente que se utilizan para explicar los procesos de infestaciones por geohelmintiasis.

  19. Chaco astronomies

    Science.gov (United States)

    Martín López, Alejandro

    2015-08-01

    This presentation discusses the result of 18 years of ethnographic and ethnohistorical studies on Chaco astronomies. The main features of the systems of astronomical knowledge of the Chaco Aboriginal groups will be discussed. In particular we will discuss the relevance of the Milky Way, the role of the visibility of the Pleiades, the ways in which the celestial space is represented, the constitution of astronomical orientations in geographic space, etc. We also address a key feature of their vision of the cosmos: the universe is seen by these groups as a socio-cosmos, where humans and non-humans are related. These are therefore actually socio-cosmologies. We will link this to the theories of Chaco Aboriginal groups about power and political relations.We will discuss how the study of Aboriginal astronomies must be performed along with the studies about astronomies of Creole people and European migrants, as well as anthropological studies about the science teaching in the formal education system and by the mass media. In this form we will discuss the relevance of a very complex system of interethnic relations for the conformation of these astronomical representations and practices.We will also discuss the general methodological implications of this case for the ethnoastronomy studies. In particular we will talk about the advantages of a study of regional scope and about the key importance of put in contact the ethnoastronomy with contemporary issues in social sciences.We also analyze the importance of ethnoastronomy studies in relation to studies of sociology of science, especially astronomy. We also study the potential impact on improving formal and informal science curricula and in shaping effective policies to protect the tangible and intangible astronomical heritage in a context of respect for the rights of Aboriginal groups.

  20. Requerimientos germinativos de enredaderas características del Chaco Serrano de Córdoba, Argentina Germinating requirements of common vines from Chaco Serrano of Córdoba, Argentina

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    Anahí Belén D’Agostino

    2012-12-01

    Full Text Available Las enredaderas son elementos conspicuos de la flora de diferentes ecosistemas. Numerosos estudios basados en patrones de distribución y ecología de este grupo de plantas se han realizado a escala regional, se conoce poco sobre los factores que afectan su distribución a nivel local. Se estudiaron los requerimientos germinativos de 21 enredaderas del Bosque chaqueño serrano de Córdoba, las cuales fueron clasificadas en típicas de bosques, matorrales e indiferentes. Se llevaron a cabo experimentos de germinación en tres regímenes de temperatura (15-5ºC, 25-15ºC y 35-20ºC, en luz (12-12hr luz-oscuridad y oscuridad permanente. Se registró el porcentaje final de germinación, el índice de germinación relativa a la luz (GRL y la velocidad de germinación (T50. La temperatura fue el principal factor regulador del proceso germinativo. El GRL y el T50 no registraron diferencias entre fisonomías. Los patrones observados apoyan la idea de que la germinación de este grupo de plantas estaría respondiendo a factores macroclimáticos (estacionalidad del clima y las precipitaciones, más que a un microclima (factores asociados a la fisonomía del sitio. La composición diferencial de enredaderas en los parches de bosques y arbustos no estaría explicada por los factores estudiados, sino por características de las etapas posteriores a la semilla.Vines are conspicuous elements of floras in different ecosystems. Patterns of distribution and ecology of this group has been studied at regional scales, mainly in tropical areas, but less is known about factors affecting their distribution at smaller scales. In this study, the germinating requirements of common vines from two plant communities (open shrubland and woodland in xerophytic mountain forests (Chaco serrano were studied. A total of 21 species were selected and classified as typical of woodland, shrubland, or indifferent. Experimental treatments were three temperature regimes (15-5ºC, 25-15º

  1. Host species of bees from the tribe Meliponini Nest in semi - arid Chaco forest near Las Lomitas, Formosa (Argentina)

    OpenAIRE

    Spagarino, Carlos; Chianetta, Pablo; Basilio, Alicia Mabel

    2014-01-01

    p.85-91 El norte de la Argentina es distribución más austral de las abejas de la tribu Meliponini. Los principales problemas de sus poblaciones son la sobreexplotación del ambiente y la tala los árboles donde nidifican, generando riesgos en la sustentabilidad de las interacciones tróficas en estos bosques. El objetivo de este trabajo fue identificar y caracterizar las especies de árboles hospedadores de nidos para las especies de melipónidos más abundantes en la vecindad de la localidad de...

  2. Heterogeneity of terrestrial bromeliad colonies and regeneration of Acacia praecox (Fabaceae in a humid-subtropical-Chaco forest, Argentina

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    Ignacio M Barberis

    2005-09-01

    Full Text Available In several tropical and subtropical forests, plants of the understorey act as an ecological filter that differentially affects woody species regeneration. In convex sectors of the Schinopsis balansae (Anacardiaceae forests of the Southeastern Chaco there are dense colonies of terrestrial bromeliads. These may influence forest regeneration by intercepting rain water and propagules in their tanks. Within colonies, the spatial distribution of bromeliads is clumped because their clonal growth leaves numerous internal gaps. In this study we describe the internal heterogeneity of three bromeliad colonies (plots and analyze how this heterogeneity affects Acacia praecox regeneration (i.e. seedling recruitment and survival. In January 1996, we randomly placed three transects with 150 contiguous quadrats of 100 cm² in each plot. For each quadrat we recorded the type of floor cover (i.e. bromeliads, herbs, litter, or bare soil and the presence of A. praecox seeds or seedlings. In July 1996 we relocated the transects and recorded seedling survival. Bromeliad colonies showed a high internal heterogeneity. Almost half of the 450 quadrats were covered by two terrestrial bromeliads. Aechmea distichantha was recorded in 81% of all quadrats with bromeliads, and Bromelia serra in the others. All quadrats with bromeliads were covered by litter. Half of them were occupied by the bases of bromeliads and the others were covered by their leaves. In contrast, where bromeliads were not present, soil surface was covered by litter in 83% and by herbaceous vegetation in 11% of the quadrats; very few quadrats were covered by bare soil. In January 1996, we recorded 127 seeds and 176 seedlings of A. praecox. Seed and seedling densities of A. praecox were similar in quadrats with and without bromeliads, but variability in seedling density of A. praecox was higher within than among plots. Seed density was higher in quadrats covered by bromeliad leaves than inside the tanks

  3. Contenido pseudototal de Cobre, Cinc, Hierro y Manganeso como estimador del fondo geoquímico en suelos de la Llanura Chaco-Pampeana de Córdoba, Argentina Pseudototal Copper, Zinc, Iron and Manganese content in soils for assessing the geochemical background of the Chaco-Pampean Plain of Cordoba, Argentina

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    Eduardo V Buffa

    2009-12-01

    Full Text Available RESUMEN El contenido total de un nutriente en el suelo es importante para conocer la fertilidad potencial para la nutrición vegetal y constituye una información básica en estudios ambientales y edafogenéticos. El objetivo de este trabajo fue determinar el contenido «pseudototal» de Cu, Zn, Fe y Mn en suelos de la llanura chaco-pampeana de Córdoba, Argentina, mediante una extracción multielemental con HNO3 4 M, pudiendo ser utilizado como aproximación del fondo geoquímico y de línea geoquímica de referencia según se analicen los datos de muestras superficiales y subsuperficiales o superficiales respectivamente. Estos datos se relacionaron con atributos edáficos de importancia agronómica: carbono orgánico, acidez, salinidad y carbonatos. Los contenidos promedios obtenidos fueron: 11,3 a 19,2 mg Cu kg-¹; 29,4 a 61,5 mg Zn kg-¹; 285 a 626 mg Mn kg-¹ y 9 a 19,9 g Fe kg-¹ en la profundidad 0-60 cm de los suelos de la llanura chaco-pampeana de Córdoba (Argentina y están dentro del rango de valores de referencia a escala mundial, con los valores menores en los suelos de textura más gruesa. Para el suelo superficial (0-20 cm, los valores promedio fueron de 15,7 a 17,7 mg Cu kg-¹, 53,5 a 56,5 mg Zn kg-¹, 548 a 564 mg Mn kg-¹ y 15,8 a 16,¹ g Fe kg-¹ en suelos loéssicos y limo-loéssicos y de 11,9 mg Cu kg-¹ (DSt: 2,8; 34,6 mg Zn kg-¹ (DSt: 8; 309 mg Mn kg-¹ (DSt: 98 y 11,9 g Fe kg-¹ (DSt: 3,2 en suelos franco-arenosos. Las diferencias texturales entre las regiones de suelos loéssicos y arenosos se tradujeron en valores de fondo geoquímico diferentes para los cuatro elementos estudiados, con menores contenidos en los suelos de textura más gruesa. El análisis de regresión múltiple incluyó a Fe y Mn como las principales variables explicativas de los cuatro elementos en todas las profundidades, relacionado con la alta afinidad existente entre los metales de transición, con tendencia a coprecipitar como óxidos de baja

  4. Genotipificación de aislamientos clínicos del complejo Cryptococcus neoformans/Cryptococcus gattii obtenidos en el Hospital «Dr. Julio C. Perrando», de la ciudad de Resistencia (Chaco, Argentina

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    Maria E Cattana

    Full Text Available La criptococosis es una infección fúngica causada por levaduras del género Cryptococcus, particularmente las del complejo Cryptococcus neoformans/Cryptococcus gattii. El conocimiento sobre la casuística de la criptococosis en el nordeste argentino es exiguo y no se tiene información sobre los tipos moleculares circulantes. El objetivo de este estudio fue realizar la caracterización genética de los aislamientos pertenecientes al complejo C. neoformans/C. gattii obtenidos en el Hospital «Dr. Julio C. Perrando» de la ciudad de Resistencia (Chaco, Argentina, con el fin de determinar especie, variedad y genotipo. Durante dos años y un mes se estudiaron 26 aislamientos clínicos. Mediante métodos convencionales y moleculares, un aislamiento fue identificado como C. gattii genotipo VGI y los 25 restantes como C. neoformans var.grubii, 23 de los cuales correspondieron al genotipo VNI y dos al genotipo VNII. Estos datos son una contribución al conocimiento de la epidemiología de la criptococosis en la Argentina y el primer informe sobre genotipos del complejo C. neoformans/C. gattii de origen clínico en el nordeste argentino.

  5. First report of Schulzia travassosi (Nematoda, Trichostrongylina, Molineoidea) for amphibians of the Chaco region in Argentina and proposal of Oswaldocruzia melanostictusi nov. comb.

    Science.gov (United States)

    González, Cynthya E; Hamann, Monika I

    2015-12-01

    This is the first record of the nematode parasite Schulzia travassosi (Trichostrongylina, Molineidae) in two Argentinean amphibians, Leptodactylus bufonius and Rhinella major, collected in two localities of the Chaco region, Las Lomitas (Formosa Province) and Taco Pozo (Chaco Province). The species was observed using light and scanning electron microscopy (SEM) and compared with previous studies of Paraguayan specimens. Regarding metric characters, the measurements found in Argentinean specimens generally did not differ from those of Paraguayan specimens; some differences were observed in the total length of males and females (some longer and some shorter than Paraguayan specimens), length of the oesophagus (in almost all specimens shorter than in Paraguayan ones) and position of the vulva (nearer to posterior end in Argentinean specimens). The branches and sphincter of ovejector are slightly longer than in Paraguayan female specimens. In males, ray 4 is almost the same length as rays 2, 3 and 5, 6. Cephalic end, cephalic vesicle, synlophe and vulvar depression were viewed under SEM. Schulzia melanostictusi Chopra, Shing and Kumar, 1986 is reassigned as Oswaldocruzia melanostictusi (Chopra, Shing and Kumar, 1986) nov. comb.

  6. Temporal Changes in Forest Contexts at Multiple Extents: Three Decades of Fragmentation in the Gran Chaco (1979-2010), Central Argentina

    Science.gov (United States)

    Frate, Ludovico; Acosta, Alicia T. R.; Cabido, Marcelo; Hoyos, Laura; Carranza, Maria Laura

    2015-01-01

    The context in which a forest exists strongly influences its function and sustainability. Unveiling the multi-scale nature of forest fragmentation context is crucial to understand how human activities affect the spatial patterns of forests across a range of scales. However, this issue remains almost unexplored in subtropical ecosystems. In this study, we analyzed temporal changes (1979–2010) in forest contexts in the Argentinean dry Chaco at multiple extents. We classified forests over the last three decades based on forest context amount (P f) and structural connectivity (P ff), which were measured using a moving window approach fixed at eight different extents (from local, ~ 6 ha, to regional, ~ 8300 ha). Specific multi-scale forest context profiles (for the years 1979 and 2010) were defined by projecting P f vs. P ff mean values and were compared across spatial extents. The distributions of P f across scales were described by scalograms and their shapes over time were compared. The amount of agricultural land and rangelands across the scales were also analyzed. The dry Chaco has undergone an intensive process of fragmentation, resulting in a shift from landscapes dominated by forests with gaps of rangelands to landscapes where small forest patches are embedded in agricultural lands. Multi-scale fragmentation analysis depicted landscapes in which local exploitation, which perforates forest cover, occurs alongside extensive forest clearings, reducing forests to small and isolated patches surrounded by agricultural lands. In addition, the temporal diminution of P f’s variability along with the increment of the mean slope of the P f ‘s scalograms, indicate a simplification of the spatial pattern of forest over time. The observed changes have most likely been the result of the interplay between human activities and environmental constraints, which have shaped the spatial patterns of forests across scales. Based on our results, strategies for the conservation

  7. I Fulfilled Your Dream: The Pedagogy of Oneiromancy and Practical Knowledge among Pilagá Women of the Gran Chaco (Formosa, Argentina

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    Ana María Spadafora

    2010-02-01

    Full Text Available  The article reflects on the way dream experiences have been addressed by anthropology, taking up my fieldwork experience with Pilagá women of the Gran Chaco Region. It discusses the assumptions, implicit or explicit, of some anthropological approaches to the analysis of dreams and their excessive concentration on the relation of dreams to shamanism and mythology. Based on ethnographic material obtained with some Pilagá women, it takes up the links, as established by one of my main collaborators, between dreaming, narrating, interpreting, doing, and copying. It aims to emphasize that the relations between dream experience and practical action correspond to what I call the "pedagogy of oneiromancy", a category that stresses the web that connects representations to the behavior and actions associated with the life trajectories and recent experiences of indigenous women.  

  8. Factors affecting infestation by Triatoma infestans in a rural area of the humid Chaco in Argentina: a multi-model inference approach.

    Science.gov (United States)

    Gurevitz, Juan M; Ceballos, Leonardo A; Gaspe, María Sol; Alvarado-Otegui, Julián A; Enríquez, Gustavo F; Kitron, Uriel; Gürtler, Ricardo E

    2011-10-01

    Transmission of Trypanosoma cruzi by Triatoma infestans remains a major public health problem in the Gran Chaco ecoregion, where understanding of the determinants of house infestation is limited. We conducted a cross-sectional study to model factors affecting bug presence and abundance at sites within house compounds in a well-defined rural area in the humid Argentine Chaco. Triatoma infestans bugs were found in 45.9% of 327 inhabited house compounds but only in 7.4% of the 2,584 sites inspected systematically on these compounds, even though the last insecticide spraying campaign was conducted 12 years before. Infested sites were significantly aggregated at distances of 0.8-2.5 km. The most frequently infested ecotopes were domiciles, kitchens, storerooms, chicken coops and nests; corrals were rarely infested. Domiciles with mud walls and roofs of thatch or corrugated tarred cardboard were more often infested (32.2%) than domiciles with brick-and-cement walls and corrugated metal-sheet roofs (15.1%). A multi-model inference approach using Akaike's information criterion was applied to assess the relative importance of each variable by running all possible (17,406) models resulting from all combinations of variables. Availability of refuges for bugs, construction with tarred cardboard, and host abundance (humans, dogs, cats, and poultry) per site were positively associated with infestation and abundance, whereas reported insecticide use showed a negative association. Ethnic background (Creole or Toba) adjusted for other factors showed little or no association. Promotion and effective implementation of housing improvement (including key peridomestic structures) combined with appropriate insecticide use and host management practices are needed to eliminate infestations. Fewer refuges are likely to result in fewer residual foci after insecticide spraying, and will facilitate community-based vector surveillance. A more integrated perspective that considers simultaneously

  9. Participatory, Multi-Criteria Evaluation Methods as a Means to Increase the Legitimacy and Sustainability of Land Use Planning Processes. The Case of the Chaco Region in Salta, Argentina

    Science.gov (United States)

    Seghezzo, Lucas; Venencia, Cristian; Buliubasich, E. Catalina; Iribarnegaray, Martín A.; Volante, José N.

    2017-02-01

    Conflicts over land use and ownership are common in South America and generate frequent confrontations among indigenous peoples, small-scale farmers, and large-scale agricultural producers. We argue in this paper that an accurate identification of these conflicts, together with a participatory evaluation of their importance, will increase the social legitimacy of land use planning processes, rendering decision-making more sustainable in the long term. We describe here a participatory, multi-criteria conflict assessment model developed to identify, locate, and categorize land tenure and use conflicts. The model was applied to the case of the "Chaco" region of the province of Salta, in northwestern Argentina. Basic geographic, cadastral, and social information needed to apply the model was made spatially explicit on a Geographic Information System. Results illustrate the contrasting perceptions of different stakeholders (government officials, social and environmental non-governmental organizations, large-scale agricultural producers, and scholars) on the intensity of land use conflicts in the study area. These results can help better understand and address land tenure conflicts in areas with different cultures and conflicting social and enviornmental interests.

  10. Participatory, Multi-Criteria Evaluation Methods as a Means to Increase the Legitimacy and Sustainability of Land Use Planning Processes. The Case of the Chaco Region in Salta, Argentina.

    Science.gov (United States)

    Seghezzo, Lucas; Venencia, Cristian; Buliubasich, E Catalina; Iribarnegaray, Martín A; Volante, José N

    2017-02-01

    Conflicts over land use and ownership are common in South America and generate frequent confrontations among indigenous peoples, small-scale farmers, and large-scale agricultural producers. We argue in this paper that an accurate identification of these conflicts, together with a participatory evaluation of their importance, will increase the social legitimacy of land use planning processes, rendering decision-making more sustainable in the long term. We describe here a participatory, multi-criteria conflict assessment model developed to identify, locate, and categorize land tenure and use conflicts. The model was applied to the case of the "Chaco" region of the province of Salta, in northwestern Argentina. Basic geographic, cadastral, and social information needed to apply the model was made spatially explicit on a Geographic Information System. Results illustrate the contrasting perceptions of different stakeholders (government officials, social and environmental non-governmental organizations, large-scale agricultural producers, and scholars) on the intensity of land use conflicts in the study area. These results can help better understand and address land tenure conflicts in areas with different cultures and conflicting social and enviornmental interests.

  11. Factors Affecting Infestation by Triatoma infestans in a Rural Area of the Humid Chaco in Argentina: A Multi-Model Inference Approach

    Science.gov (United States)

    Gurevitz, Juan M.; Ceballos, Leonardo A.; Gaspe, María Sol; Alvarado-Otegui, Julián A.; Enríquez, Gustavo F.; Kitron, Uriel; Gürtler, Ricardo E.

    2011-01-01

    Background Transmission of Trypanosoma cruzi by Triatoma infestans remains a major public health problem in the Gran Chaco ecoregion, where understanding of the determinants of house infestation is limited. We conducted a cross-sectional study to model factors affecting bug presence and abundance at sites within house compounds in a well-defined rural area in the humid Argentine Chaco. Methodology/Principal Findings Triatoma infestans bugs were found in 45.9% of 327 inhabited house compounds but only in 7.4% of the 2,584 sites inspected systematically on these compounds, even though the last insecticide spraying campaign was conducted 12 years before. Infested sites were significantly aggregated at distances of 0.8–2.5 km. The most frequently infested ecotopes were domiciles, kitchens, storerooms, chicken coops and nests; corrals were rarely infested. Domiciles with mud walls and roofs of thatch or corrugated tarred cardboard were more often infested (32.2%) than domiciles with brick-and-cement walls and corrugated metal-sheet roofs (15.1%). A multi-model inference approach using Akaike's information criterion was applied to assess the relative importance of each variable by running all possible (17,406) models resulting from all combinations of variables. Availability of refuges for bugs, construction with tarred cardboard, and host abundance (humans, dogs, cats, and poultry) per site were positively associated with infestation and abundance, whereas reported insecticide use showed a negative association. Ethnic background (Creole or Toba) adjusted for other factors showed little or no association. Conclusions/Significance Promotion and effective implementation of housing improvement (including key peridomestic structures) combined with appropriate insecticide use and host management practices are needed to eliminate infestations. Fewer refuges are likely to result in fewer residual foci after insecticide spraying, and will facilitate community-based vector

  12. ETNOBOTÁNICA MÉDICA DE LOS INDÍGENAS CHOROTE Y SU COMPARACIÓN CON LA DE LOS CRIOLLOS DEL CHACO SEMIÁRIDO (ARGENTINA

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    Gustavo F. Scarpa

    2009-01-01

    Full Text Available Se identifica la farmacopea vegetal que utilizan actualmente los indígenas Chorote del Chaco semiárido argentino. Se registraron 69 especies vegetales, 2 especies de hongos y un liquen con 194 usos medicinales. Se destaca el bajo porcentaje de este tipo de usos respecto al total de datos etnobotánicos recopilados para los Chorote (15 %. De su comparación con la farmacopea criolla se desprende que el 52 % de los datos resulta idéntico, por lo que se concluye que los Chorote habrían adquirido estas prácticas a manera de préstamo cultural. La farmacopea de este pueblo, entonces, fue muy reducida debido a que su medicina tradicional de corte chamanístico no involucraba antaño el uso de remedios de origen vegetal. Entre las plantas medicinales típicamente Chorote se pueden citar a Achatocarpus praecox, Cleistocactus baumannii, Echinopsis rhodotricha y Funastrum clausum. Los usos estrictamente Chorote quedarían así reducidos a 90 aplicaciones en total, principalmente como antiemenagogos, antidiarreicos, antitusivos y cicatrizantes.

  13. Efecto del tipo de desmonte sobre la descomposición de pastos nativos e introducidos en el chaco Árido de la Argentina

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    ABRIL, A

    2012-04-01

    Full Text Available ResumenLa dinámica de la descomposición y la liberación de nutrientes a partir de los restos vegetales son procesos clave para la fertilidad edáfica, por lo que resultan adecuados para estimar el grado de sustentabilidad de los sistemas productivos. En este trabajo se evaluó el efecto del tipo de desmonte (total y selectivo sobre la tasa de descomposición, la liberación de N y la fertilidad del suelo de pastizales (nativos e introducidos para uso ganadero en el Chaco Árido de la Provincia de Córdoba, con la finalidad de predecir el grado de sustentabilidad de ambos sistemas productivos bajo las condiciones climáticas de la región. Se utilizó un diseño experimental de parcela dividida: desmonte (total vs selectivo/pastura (nativa vs introducida, con 4 réplicas por tratamiento.En las parcelas se colocaron jaulas de descomposición con 20 g de residuos (colectados en cada tratamiento que fueron retiradas al final de cada estación climática durante dos años. Muestras de suelo (0-20 cm de profundidad fueron tomadas anualmente en ambos tipos de desmonte y en un bosque colindante como testigo.En cada fecha de muestreo se evaluó el peso y las características químicas y biológicas de los residuos. En las muestras de suelo se determinó el contenido de nitratos, las fracciones de la materia orgánica y la respiración edáfica. Durante el primer año de estudio, la tasa de descomposición y la mayoría de los parámetros analizadosfueron muy semejantes entre tratamientos. Contrariamente, en el segundo año todos los valores fueron muy erráticos debido a que germinaron pastos dentro de las jaulas. Los parámetros de fertilidad analizados no mostraron diferencias entre sistemas de desmonte y se correlacionaron con el contenido de humedad. Nuestros resultados indican que: a las condiciones climáticas del Chaco Árido afectan la descomposición en mayor medida que la composición química de los residuos y el tipo de desmonte; b, los

  14. Evolución y escenarios futuros de la deforestación en el suroeste de la provincia del Chaco, Argentina

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    Eloy Montes Galbán

    2017-12-01

    Full Text Available En este estudio se analizó el proceso de deforestación en el suroeste de la provincia del Chaco, desde 1989 hasta 2010 y su proyección al año 2030. Para ello se utilizaron imágenes Landsat 5 TM, procesadas en estudios previos mediante clasificación supervisada con el software ENVI, para obtener los cambios de coberturas de suelo en el período 1989-2010. A través del Sistema de Información Geográfica IDRISI se aplicaron métodos de reclasificación y superposición temática (Overlay, asimismo se realizaron simulaciones espaciales con cadenas de Markov y autómata celular. Los resultados permiten afirmar que en el periodo 1989-2010, el área de bosques se redujo en un valor superior al 70%. La simulación de cambios para los años 2020 y 2030 indica que, de continuar la tendencia actual, la pérdida de superficie forestal podría alcanzar el 74,64% y el 76,28%, respectivamente.

  15. Memorias y representaciones sobre el criollo del chaco argentino

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    Maria Cristina Dasso

    2010-12-01

    Full Text Available In Argentina, the creole population has been appreciated or undervalued according to the dominant national political vision. Border situations and contact between descendants of former Spanish settlers and the indigenous peoples of the Chaco allowed the rise of mutual representations that dominate their discourse up to these days. In this regard, there are paintings belonging to the nineteenth and twentieth century whose data on the creole are relevant to contrast with the aboriginal representation of the specific rural creole settlers of Mision Nueva Pompeya and the places related to this village of the Chaco.

  16. Trabajadores indígenas en el Chaco argentino: algunos sentidos estigmatizadores

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    Valeria Iñigo Carrera

    2013-07-01

    Full Text Available The indigenous Qom people of the central-eastern Chaco (in northeastern Argentina are workers who are being expelled from agrarian production. This work seeks to help us understand the materiality that this process assumes in peoples' minds, teasing out the following meanings: the tension between "marisca" and "labour", the supposed absence of a "productive culture", and the "dependency" in which Chaco indigenous people allegedly are immersed.

  17. Antropología y Estética: el caso de la cestería pilagá (Gran Chaco, Argentina

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    Marina Matarrese

    2016-11-01

    Full Text Available En este artículo indago de manera crítica las valoraciones y los enunciados estéticos de las pilagá (provincia de Formosa, Argentina con respecto a su producción cesteril. El estudio de estas apreciaciones, entendidas como parte de procesos sociales dinámicos, involucra diversas esferas de la vida social pilagá. De ahí que, algunos interrogantes que inspiran este trabajo sean: ¿cuáles son las consideraciones de valor de las pilagá con respecto a su producción cesteril? ¿En relación a qué variables se realizan estas consideraciones de valor? ¿Cómo es vivida la distinción entre las valoraciones que los pilagá consideran propias y aquellas identificadas como ajenas? ¿Por qué surge esta diferenciación y cómo incide en el momento de elaborar la artesanía?

  18. Sources and controls for the mobility of arsenic in oxidizing groundwaters from loess-type sediments in arid/semi-arid dry climates - evidence from the Chaco-Pampean plain (Argentina).

    Science.gov (United States)

    Nicolli, Hugo B; Bundschuh, Jochen; García, Jorge W; Falcón, Carlos M; Jean, Jiin-Shuh

    2010-11-01

    In oxidizing aquifers, arsenic (As) mobilization from sediments into groundwater is controlled by pH-dependent As desorption from and dissolution of mineral phases. If climate is dry, then the process of evaporative concentration contributes further to the total concentration of dissolved As. In this paper the principal As mobility controls under these conditions have been demonstrated for Salí River alluvial basin in NW Argentina (Tucumán Province; 7000 km(2)), which is representative for other basins or areas of the predominantly semi-arid Chaco-Pampean plain (1,000,000 km(2)) which is one of the world's largest regions affected by high As concentrations in groundwater. Detailed hydrogeochemical studies have been performed in the Salí River basin where 85 groundwater samples from shallow aquifers (42 samples), deep samples (26 samples) and artesian aquifers (17 samples) have been collected. Arsenic concentrations range from 11.4 to 1660 μg L(-1) leaving 100% of the investigated waters above the provisional WHO guideline value of 10 μg L(-1). A strong positive correlation among As, F, and V in shallow groundwaters was found. The correlations among those trace elements and U, B and Mo have less significance. High pH (up to 9.2) and high bicarbonate (HCO(3)) concentrations favour leaching from pyroclastic materials, including volcanic glass which is present to 20-25% in the loess-type aquifer sediments and yield higher trace element concentrations in groundwater from shallow aquifers compared to deep and artesian aquifers. The significant increase in minor and trace element concentrations and salinity in shallow aquifers is related to strong evaporation under semi-arid climatic conditions. Sorption of As and associated minor and trace elements (F, U, B, Mo and V) onto the surface of Fe-, Al- and Mn-oxides and oxi-hydroxides, restricts the mobilization of these elements into groundwater. Nevertheless, this does not hold in the case of the shallow unconfined

  19. Argentina.

    Science.gov (United States)

    1986-06-01

    This discussion of Argentina covers geography, the people, history and political conditions, government, economy, foreign relations, and relations between the US and Argentina. In 1985, the population of Argentina was estimated to be 30.6 million with an estimated annual growth rate of 1.5%. The infant mortality rate is 34.1/1000, and life expectancy is 70.2 years. Argentina, which shares land borders with Bolivia, Brazil, Chile, Paraguay, and Uruguay, is bounded by the Atlantic and the Antarctic Oceans. Descendants of Italian and Spanish immigrants predominate in Argentina, but many trace their origins to British and West and East European ancestors. In recent years, there has been a substantial influx of immigrants from neighboring Latin American countries. The native Indian population, estimated to be 50,000, is concentrated in the peripheral provinces of the north, northwest, and south. What is now Argentina was discovered in 1516 by the Spanish navigator Juan de Solia. The formal declaration of independence from Spain was made on July 9, 1816. In the late 19th century, 2 forces worked to create the modern Argentine nation: the introduction of modern agricultural techniques and the integration of Argentina into the world economy. Argentina has impressive human and natural resources, but political conflict and uneven economic performance since World War II have impeded full realization of its considerable potential. Yet, it is one of the wealthiest countries in Latin America. Among the reasons for the military coup of March 1976 was the deteriorating economy, caused by declining production and rampant inflation. Under the leadership of the Minister of the Economy, the military government focused attention on those immediate problems, and, in 1978, embarked on a new development strategy focusing on the establishment of a free market economy. There was little improvement in the economy, and a new economic plan was introduced in 1985 which has capped inflation by

  20. Deforestation of "degraded" rangelands: The Argentine Chaco enters the next stage of the Anthropocene

    Science.gov (United States)

    Twenty years ago I completed my Master’s work in the Chaco forests of northern Argentina. The native forests are, in fact, rangelands. In addition to livestock grazing, there is timber extraction, wildlife harvest (think tegu lizard cowboy boots), and charcoal production. I took part in a project co...

  1. Orientalism/Occidentalism

    NARCIS (Netherlands)

    Minca, C.; Ong, C.E.

    2017-01-01

    Orientalism and Occidentalism are interrelated concepts. Orientalism is defined in three keys ways: (i) as a study of “the Orient”; (ii) as a cultural and aesthetic concern with “the Orient”; and (iii) as a critical approach to understanding the construction of “the Orient” by European and American

  2. Uso de plantas medicinales en el tratamiento de afecciones transmitidas por el agua en una comunidad toba (qom del Impenetrable (Chaco, Argentina: Una perspectiva etnoecológica y sanitaria

    Directory of Open Access Journals (Sweden)

    Gustavo J. Martínez

    2011-07-01

    Full Text Available Se caracteriza a través de una investigación etnoecológica y participativa, las representaciones y prácticas vernáculas relacionadas con la prevención y tratamiento natural de problemáticas sanitarias que se transmiten a través del agua (como cólera, diarrea, gastroenteritis, disentería, hepatitis, entre los tobas (qom del Chaco Impenetrable. Se documentaron en este contexto el uso de 64 especies medicinales vinculadas con el alivio de los síntomas gastrointestinales característicos de estas dolencias. Los resultados se discuten en orden a la planificación y desarrollo de estrategias locales de protección de la salud ambiental en comunidades indígenas del Gran Chaco.

  3. Argentina

    International Nuclear Information System (INIS)

    Masters, R.

    1997-01-01

    This article provides information on the energy resources, government, electricity supply, nuclear industry and fuel cycle of Argentina. About 12% of electric power produced is generated from nuclear power plants. The operating capacity, history and partial privatisation of the nuclear industry are covered, and fuel cycle facilities described. These include uranium mining and processing, enrichment, fuel fabrication and heavy water production. (UK)

  4. Argentina

    International Nuclear Information System (INIS)

    2001-04-01

    This economical study summarizes the energy situation of Argentina: energy institutions and policy, energy companies (oil, electricity, gas, coal), energy supplies (resources, power production, petroleum, natural gas), prices and tariffs, consumption, economical stakes and perspectives (investments, agreements, projects). Energy data for the 1971-1999 period are summarized in graphs and tables. (J.S.)

  5. PLURALISMO MÉDICO Y ETNOMEDICINA ENTRE LOS TOBAS (QOM DEL RÍO BERMEJITO (CHACO, ARGENTINA. DESAFÍOS Y APORTES PARA UNA GESTIÓN INTERCULTURAL DE LA SALUD EN EL IMPENETRABLE CHAQUEÑO / Medical pluralism and ethnomedicine among the Toba (Qom, Bermejito

    Directory of Open Access Journals (Sweden)

    Gustavo Javier Martínez

    2011-12-01

    Full Text Available El presente trabajo se concibe en el marco de un estudio de la etnomedicina de los pueblos tobas (qom del Chaco Central, Argentina, y  pretende mostrar - a partir de la caracterización de la misma y del estado actual de los procesos de salud/enfermedad- algunos de los desafíos que supone una gestión intercultural en materia de salud en la región conocida como Impenetrable chaqueño. Para ello nos detendremos en la consideración de tres aspectos: Las prácticas médicas tradicionales en el sistema sanitario local, la salud materno- infantil, y las problemáticas de salud vinculadas al ambiente. Desde el punto de vista metodológico discutiremos algunos marcos teóricos y el estado actual en torno a estas temáticas, a la luz de información de campo obtenida de la conjunción de técnicas cualitativas, cuantitativas y participativas. Analizaremos para ello la complejidad del sistema etnomédico vigente en la región; los conflictos y articulación entre los diferentes escenarios y actores locales; las representaciones, pensamientos y praxis de las mujeres tobas vinculadas al ciclo vital; y por último, los conocimientos, actitudes y prácticas de los nativos en relación con los cambios ambientales y con las enfermedades a ellos asociadas. Como síntesis y corolario de cada una de estas temáticas, exponemos posibles lineamientos y sugerencias en orden a la gestión intercultural de la salud, considerando el contexto de pluralismo médico vigente, así como el aporte de diversos enfoques interdisciplinares de investigación y acción, tales como las perspectivas etnoecológicas y los estudios de epidemiología crítica y comunitaria.   Palabras claves: tobas; Chaco Central; Impenetrable; salud; interculturalidad; etnomedicina.   Abstract The following article is conceived as part of a study of ethnomedicine of the people Toba (Qom of the Central Chaco, Argentina, and aims to show - by characterizing of it and of  the current state of

  6. Argentina

    Energy Technology Data Exchange (ETDEWEB)

    1999-09-01

    This report presents a brief overview of the socio-economic, energy and environmental context in which climate change mitigation actions in Argentina shall be inserted. To that end, the dynamic of the Argentine economic development, its influence on the energy system and environmental impacts is summarised. From the environmental standpoint, emphasis shall only be made on the impact of economic development patterns and energy policies on GHG emission. (au) 73 refs.

  7. [Urban development and the demographic situation in Chaco and its capital between 1960 and 1990].

    Science.gov (United States)

    Foschiatti De Dell'orto, A M

    1992-01-01

    "The large demographic growth registered in the Chaco province [of Argentina] at the beginning of this Century slowed down since the 1950s as a result of the successive economic crisis undergone by this province. The demographic response was the outmigration toward the more developed areas of the country and to the capital city of Chaco. A large share of Resistencia demographic growth is provided by this internal migration. This rapid increase makes inadequate the functional and the service structure of the city." (SUMMARY IN ENG) excerpt

  8. Argentina

    International Nuclear Information System (INIS)

    Tanis, S.; Ramberg, B.

    1990-01-01

    Argentina has embarked on an ambitious domestic nuclear research and energy program. The venture promises to provide the nation with the infrastructure to play an important role in the nuclear export market in the years ahead. Buenos Aires built its program on a foundation of international support and assistance that overlay an emerging sophisticated industrial and scientific establishment. The foreign contribution sensitized Argentina to opportunities in the global market. This paper reports that Argentina operates two heavy-water/natural uranium reactors, Atucha I and Embalse. Producing, respectively, 320 MW(e) and 600 MW(e), they supply roughly 10 percent of the country's electricity. With a capacity factor of 84 percent, Atucha I is among the best operated plants in the world. Plans call for a third, 745 MW(e) power plant, Atucha II, to go on line in the early 1990s. During this period, construction also may begin on three 300 MW(e) plants, although the country's foreign indebtedness plus cost overruns in earlier construction will place a heavy burden on these plans

  9. Argentina

    International Nuclear Information System (INIS)

    Anon.

    1992-01-01

    This paper reports that like so many other countries, Argentina is in the throes of privatization and restructuring of its economic programs. This has had a direct effect on the LPG industry. Argentina is a country with many natural resources. However, natural gas and crude, while present, are not in abundance. Imports of these and their associated products are needed to satisfy the growing need of the population from time to time. This is especially true with LPGs. Production of the fuel averages about 1 million tons, not enough to satisfy internal needs in the winter but enough to permit some exports in the summer to nearby Brazil. The Country's Congress approved a plan to sell-off or lease parts of the natural gas distribution network and other businesses of Gas del Estado. Subsequent new legislation has called for ten new natural gas distribution zones. Included in the sell-off is the company's propane distribution division. What is left of Gas del Estado and YPF will become a corporation in the true sense of the word. Stocks in YPF are to be sold to the public

  10. Argentina.

    Science.gov (United States)

    1993-02-01

    Background notes on Argentina provide a profile of the geography, selected demographic features, government and economic conditions. Descriptive text includes a discussion of the people, their history and political conditions, the government and officials, the state of the economy, their defense, foreign relations, and relations with the US. The 1992 estimated population was about 33 million of whom 97% are European (mostly Spanish and Italian). Religions represented are Roman Catholic (92%), Protestant (2%), Jewish (2%), and other (4%). Adult literacy is 95%. 36% are engaged in industry and commerce, 20% in services, 19% in agriculture, 6% in transport and communications, and 19% other. Per capita gross domestic product was $4,500. There are only 50,000 native Indians remaining in peripheral provinces. The population enjoys a high standard of living and a low growth rate. The country was shaped by dominant forces: modern agricultural techniques and the integration of the country into the world economy. Foreign investment aided the economic revolution. Conservative and radical rule has swung the country back and forth politically since 1916. Colonel Juan Domingo Peron led a successful military coup in 1943 and was elected in 1946. Policies were instituted to give a greater voice to the working class, and with the influences of his wife, women's groups. In 1955, he was ousted by the military, which failed to revive the economy and quiet increasing terrorism. After a number of difficult elections, Peron was reinstated as president in 1973. Extremists on the left and right threatened public order; the military as a consequence imprisoned persons indefinitely. Peron's wife succeeded him after his death, but was removed from office in the military coup of 1976. Basic human rights were violated during this period. By 1983, a fair election was held and support increased for a democratic system. In 1989, Carlos Saul Menem, a Peronist candidate, won and established

  11. Argentina

    Directory of Open Access Journals (Sweden)

    G. Benedetti

    2007-01-01

    Full Text Available El presente trabajo tiene como objetivo realizar un diagnóstico ambiental de un sector de la ciudad de Bahía Blanca, Argentina basado en el arbolado urbano de alineación. El arbolado constituye un componente fundamental de los paisajes artifi ciales ya que contribuye al aumento del confort y al mejoramiento de la calidad del medio. En este sentido, actúa como un factor moderador de las condiciones climáticas, la contaminación y la salud de la población. El municipio de la ciudad de Bahía Blanca tiene como proyecto la realización de inventarios del arbolado en los distintos barrios, para lograr optimizar la relación entre la cantidad de ejemplares arbóreos y la densidad poblacional. Es importante considerar la variedad de ejemplares en función del uso del suelo y de las características ambientales de cada sector. Por lo tanto, este trabajo presenta un diseño metodológico para la elaboración del plano verde de la ciudad.

  12. Prehistoric deforestation at Chaco Canyon?

    Science.gov (United States)

    Wills, W H; Drake, Brandon L; Dorshow, Wetherbee B

    2014-08-12

    Ancient societies are often used to illustrate the potential problems stemming from unsustainable land-use practices because the past seems rife with examples of sociopolitical "collapse" associated with the exhaustion of finite resources. Just as frequently, and typically in response to such presentations, archaeologists and other specialists caution against seeking simple cause-and effect-relationships in the complex data that comprise the archaeological record. In this study we examine the famous case of Chaco Canyon, New Mexico, during the Bonito Phase (ca. AD 860-1140), which has become a prominent popular illustration of ecological and social catastrophe attributed to deforestation. We conclude that there is no substantive evidence for deforestation at Chaco and no obvious indications that the depopulation of the canyon in the 13th century was caused by any specific cultural practices or natural events. Clearly there was a reason why these farming people eventually moved elsewhere, but the archaeological record has not yet produced compelling empirical evidence for what that reason might have been. Until such evidence appears, the legacy of Ancestral Pueblo society in Chaco should not be used as a cautionary story about socioeconomic failures in the modern world.

  13. Variabilidad fenológica del bosque y del pastizal nativo en el Chaco Semiárido de la Provincia de Santiago del Estero, Argentina / Phenological variability of forest and native pastures in the Semiarid Chaco of the Santiago del Estero Province

    Directory of Open Access Journals (Sweden)

    Jose Luis Tiedermann

    2012-04-01

    Full Text Available ResumoLos parámetros estacionales del bosque y pastizal nativo del Chaco semiárido de Santiago del Estero fueron extractados a partir de series temporales del índice de vegetación NDVI derivadas del satélite SPOT VEGETATION, mediante el programa TIMESAT. El inicio y el fin de las estaciones de crecimiento del bosque en el período seco, presentaron un mínimo desplazamiento con respecto a las estaciones de crecimiento del período húmedo. Este desplazamiento estaría relacionado con la respuesta de las especies que conforman el estrato inferior y medio del bosque ante la variación de las precipitaciones entre períodos. El inicio y fin de las estaciones de crecimiento del pastizal nativo no presentaron variaciones temporales entre períodos. Esta respuesta estaría relacionada con la gran adaptación de esta cobertura a las adversidades climáticas extremas como las sequías. Los puntos medios y el NDVI máximo de las estaciones de crecimiento del bosque y del pastizal nativo, coinciden temporalmente con el otoño, esta respuesta estaría relacionada con una mayor efectividad de las precipitaciones, y con una menor evapotranspiración y temperatura. La producción total integrada y la productividad estacionalmente activa de las estaciones de crecimiento del bosque y del pastizal nativo, no fueron afectadas por el período. La estabilidad del bosque estaría relacionada con su biodiversidad, con su estructura estratificada, y por las especies leñosas de porte y raíces profundas que lo conforman; mientras que la estabilidad del pastizal nativo estaría relacionada con sus estratégicas adaptaciones, morfológicas, fisiológicas y de comportamiento para el uso eficiente del agua.AbstractThe seasonal parameters of the forest and native pasture of the semi-arid Chaco of Santiago del Estero were abstracted from temporary series of the vegetation index NDVI derived from satellite SPOT VEGETATION using the software TIMESAT. The beginning and

  14. Floods, Droughts and Farming on the Plains of Argentina and ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    2015-04-01

    Floods, Droughts and Farming on the Plains of Argentina and Paraguay, Pampas and Chaco Regions ... End Date. April 1, 2015 ... Argentina, South America, Paraguay, North and Central America ... IDRC is now accepting applications for this year's IDRC Doctoral Research Awards (IDRA). ... Careers · Contact Us · Site map.

  15. Problemas y desafíos de la traducción de las lenguas indígenas. Los casos toba y maká de la región del Gran Chaco (Argentina y Paraguay

    Directory of Open Access Journals (Sweden)

    Cristina Messineo

    2017-09-01

    Full Text Available Este trabajo trata sobre los problemas de la traducción entendida como una actividad translingüística e intercultural que involucra tomar decisiones no solo en el nivel lingüístico (estructural sino también en el comunicativo y performativo del lenguaje. Con el propósito de abarcar estos dos niveles, seleccionamos, por un lado, dos categorías gramaticales de las lenguas toba y maká: los marcadores de posesión alienable y la evidencialidad. Dado que se trata de categorías no referenciales y pragmáticas, sus significados culturales podrían perderse en el proceso de traducción. Por otro lado, seleccionamos dos rasgos del arte verbal toba y maká que evidencian que el discurso oral indígena posee su propia estructura y organización, aun cuando pueda parecer errático o azaroso. Estos rasgos son la estructura prosódica del consejo toba y la repetición de los conectores discursivos en la narrativa toba y maká. Así también, el interés teórico de este trabajo es reflexionar sobre el modelo de lengua que subyace tanto a la descripción lingüística como a la traducción. Nuestro análisis está basado en un corpus de datos de primera mano recogidos durante sucesivos trabajos de campo en comunidades tobas y makás de la región del Gran Chaco.

  16. Análisis de la precipitación en la llanura chaqueña argentina y su relación con el comportamiento de la circulación atmosférica y las temperaturas de la superficie del mar Rainfall analysis in chaco plains and its relationship with atmospheric circulation behavior and sea surface temperatures

    Directory of Open Access Journals (Sweden)

    Marcela Hebe González

    2010-12-01

    Full Text Available El objetivo del presente estudio es detectar indicadores de circulación que se relacionen con la variabilidad interanual de la lluvia en la llanura chaquena. La precipitación media en regiones definidas se correlacionó con la temperatura de la superficie del mar, altura geopotencial en 1000, 500 y 200 Hpa, presión a nivel del mar, humedad específica en 925Hpa, viento zonal y meridional en 850 Hpa, simultáneamente y en el mes previo. El aumento de la precipitación estival se asocia al debilitamiento del anticiclón del Atlántico y altos valores de humedad específica en el noreste de Argentina. En la región noreste además se asocia a viento este y debilitamiento del viento del norte mientras que la región noroeste es la más influenciada por La Nina. En primavera el rasgo fundamental es la relación en el noreste con la fase cálida del ENOS. El rasgo más importante es que se asocia la precipitación estival en las tres subregiones con el debilitamiento del anticiclón del Atlántico durante el mes previo mientras que en la primavera la senal más importante se relaciona con el ENOS.The aim of this study is to detect atmospheric signals related to the interannual variability of rainfall in the Chaco Plains. Mean rainfall series in regions defined, are correlated to sea surface temperature, 200, 500, and 1000Hpa geopotential height, sea level pressure, 925 Hpa specific humidity and 850Hpa wind fields in the simultaneous three month period and in the previous month. The increase of summer precipitation is associated to the weakening of the Atlantic High and high values of low level specific humidity in northeast Argentina. In the northeast region it is also associated with easterlies winds and weak northerly and the northwest region is influenced by La Nina. In spring, the principal feature is the relation with the warm phase of ENOS phenomenon. The most important feature is that summer rainfall in the three subregions, is associated

  17. El análisis de narrativas en etnobotánica: el "yuchán" (Ceiba Chodatii, Bombacaceae en el discurso de los wichís del Chaco Semiárido salteño, Argentina Narrative analysis in ethnobotanical investigations: the "yuchán" (Ceiba chodatii, Bombacaceae in the oral discourse of the Wichí of the Semiarid Chaco in Salta province, Argentina

    Directory of Open Access Journals (Sweden)

    María Eugenia Suárez

    2009-12-01

    Full Text Available Se presenta un estudio de caso referido a un árbol característico de los bosques chaquenos, el "yuchán" (Ceiba chodatii, Bombacaceae, a fin de ilustrar la importancia del análisis de narrativas vernáculas para la investigación etnobotánica. Se trabajó articulando dos enfoques teórico-metódológicos: por un lado, se estudiaron los roles, usos y significados de la planta en el contexto sociocultural wichí desde una perspectiva etnobotánica; por otro, se analizaron tres discursos orales en base a métodos propios de disciplinas como la antropología sociocultural y lingüística, la etnografía del habla y la folklorística. Además de corroborar y profundizar los resultados que surgen de los datos etnobotánicos, el análisis de las narrativas aportó nueva y valiosa información. El conjunto de los resultados obtenidos demuestran que el estudio detallado de las narrativas locales es de suma importancia para cualquier investigación etnobotánica. Los aportes que brinda posibilitan una interpretación cabal de los datos etnobotánicos recopilados y una comprensión acabada de los saberes, creencias y significados de los diversos lugares y elementos del cosmos. En este marco, el trabajo con encuestas abiertas, el conocimiento de los entrevistados y su contexto sociocultural y el registro minucioso de los recursos expresivos utilizados en las conversaciones devienen cruciales.This article is a case study of the "yuchán" (Ceiba chodatii, Bombacaceae, a typical tree of the Chaco forest, and it illustrates the importance of analyzing vernacular narratives in ethnobotanical research. Two theoretical-methodological approaches were combined: firstly, the roles, uses and meanings of this plant in the Wichí socio-cultural context were studied from an ethnobotanical perspective; then, three oral discourses were examined using methods borrowed from disciplines such as linguistic and sociocultural anthropology, linguistic ethnography and

  18. Dinámica temporal del NDVI del bosque y pastizal natural en el Chaco de la Provincia de Santiago del Estero, Argentina / The temporal dynamic of NDVI, of forest and grassland in the Chaco Seco of Santiago del Estero province, Argentine

    Directory of Open Access Journals (Sweden)

    Hugo Raul Zerda

    2010-04-01

    Full Text Available Mediante imágenes mapas del índice de vegetación de diferencia normalizada (NDVI derivados del SPOT 4-Vegetation, se analizó la dinámica interanual y mensual de muestras de bosque nativo y pastizal natural de la provincia de Santiago del Estero, Argentina. Los resultados, muestran diferencias significativas (p pequenõs 0.05 para ambas coberturas, en la dinámica interanual y mensual. La actividad fotosintética del bosque se muestra superior a la del pastizal natural, analizada a partir de las curvas de NDVI. La dinámica del bosque y del pastizal natural, sigue el modelo regional de precipitaciones, alcanzando mayores valores de NDVI, durante la estación húmeda estival (Octubre-Mayo y menores valores de NDVI, durante la estación seca invernal (Junio-Septiembre. El bosque presentó mayor estabilidad que el pastizal natural, ante variaciones en las precipitaciones y temperatura, esperable por la mayor diversidad de especies en los bosques, y especialmente por las leñosas de raíces más profundas. La curva NDVI del pastizal natural, muestra sensibilidad al efecto de las elevadas intensidades de radiación en el verano, evapotranspiración y sequías; y debido a la mayor eficiencia del sistema radicular para el aprovechamiento del agua disponible, responde de manera inmediata ante las precipitaciones.AbstarctThe interannual and monthly dynamic of samples of forest and grassland from Santiago del Estero province, Argentine Republic, was analyzed through maps of vegetation of normalized difference (NDVI index derived from Vegetation/SPOT4 sensor. The results demonstrate that both covers, interannual and monthly dynamic mentioned before, have significant differences (p<0.05. The photosynthetic activity of the forest is superior compared with the one of the grassland, analyzed from the NDVI curves. The forest and the grassland dynamic, follows the regional precipitation pattern, reaching higher values from NDVI, during the summer humid

  19. Factores que afectan la germinación de Justicia squarrosa Griseb, forrajera nativa de la región chaqueña de la Argentina Factors affecting germination in Justicia squarrosa Griseb, a native forage species of the Chaco region of Argentina

    Directory of Open Access Journals (Sweden)

    M. Zalazar

    2009-06-01

    Full Text Available Justicia squarrosa es una especie forrajera presente en diferentes comunidades naturales del Chaco Árido argentino en donde constituye un importante componente en la dieta del ganado en épocas de escasez de agua. El objetivo del presente trabajo fue estudiar los factores que afectan la germinación de J. squarrosa. Se tuvieron en cuenta diferentes regímenes de temperatura, calidades de luz y potenciales hídricos; además, se evaluó la capacidad de germinación de sus semillas en el tiempo. La germinación de las semillas de J. squarrosa estuvo condicionada por factores como la temperatura y el estrés hídrico. Los mayores porcentajes de germinación se obtuvieron a 25/15 ºC tanto en luz como en oscuridad permanente. Por debajo de -0,2 MPa la germinación disminuyó significativamente. Las semillas de J. squarrosa fueron indiferentes a los tratamientos de luz. Luego de 48 meses se observó un alto porcentaje de germinación de las semillas de la especie. Los resultados obtenidos proporcionan información valiosa que ayudará a establecer estrategias de domesticación y propagación de la especie.Justicia squarrosa is a forage species that lives in different natural communities in Chaco Arido, where it is an important component of cattle diet in unfavourable drought periods. The aim of this work was to study the factors affecting seed germination in J. squarrosa. Different temperature regimes, light quality and water potential were considered. Seed germination capacity along time was also evaluated. Justicia squarrosa seed germination was conditioned by factors such as temperature and water potential. The highest germination percent was found at 25/15 ºC, both in light and dark. Seed germination decreased significantly below -0.2 MPa. Justicia squarrosa seeds did not respond to light treatments. After 48 months the percentage of seed germination was high. The results found in this article provide valuable information that will help to

  20. Arte egipcio y arquitectura occidental

    OpenAIRE

    Vela Cossío, Fernando

    2011-01-01

    La revitalización de modelos procedentes del arte egipcio antiguo ha llenado buena parte de la actividad artística en Occidente durante los últimos trescientos años. Desde el diseño de un simple ex-libris hasta las más complejas creaciones de arquitectos, decoradores o escenógrafos, las referencias más o menos sutiles a las manifestaciones originales del arte del Antiguo Egipto se han venido produciendo como resultado de una actitud impulsada tanto por la curiosidad artística como por la búsq...

  1. Distribución de Lutzomyia longipalpis en el Chaco Argentino, 2010

    Directory of Open Access Journals (Sweden)

    Oscar D. Salomón

    2011-06-01

    Full Text Available El riesgo de leishmaniasis visceral (LV urbana epidémica se registró por primera vez en la Argentina en el año 2004, por presencia del vector Lutzomyia longipalpis en la provincia de Formosa, la provincia de Misiones registra casos de LV humana, LV canina y vector en el año 2006, y la provincia de Corrientes en el verano 2008-2009. En la provincia de Santiago del Estero los casos de LV humana y LV canina en el año 2008 estuvieron asociados posiblemente a vectores secundarios. Por ello, para conocer la distribución del riesgo en la región del Chaco, entre enero y abril del 2010 se realizó la búsqueda sistemática del vector de LV en 30 localidades de las provincias de Formosa, Chaco y en la ciudad de Reconquista, Santa Fe (224 trampas/noche. Se comprobó la presencia de Lu. longipalpis, por primera vez, en las localidades de Resistencia y Puerto Antequera (Chaco. En Clorinda y Puerto Pilcomayo (Formosa se obtuvieron las trampas con más ejemplares, 158 y 241 Lu. longipalpis trampa/sitio/noche respectivamente. Los resultados muestran que el vector de la LV urbana epidémica continúa dispersándose en el territorio argentino, habiendo ingresado a la provincia de Chaco. La notificación de casos esporádicos en la región chaqueña, transmitidos por vectores secundarios, como Lu. migonei, podría aumentar también debido a la vigilancia intensificada, y a la dispersión del parásito asociada al tránsito de perros infectados, sintomáticos o asintomáticos.

  2. Arte egipcio y arquitectura occidental

    Directory of Open Access Journals (Sweden)

    Fernando Vela Cossío

    1997-07-01

    Full Text Available La revitalización de modelos procedentes del arte egipcio antiguo ha llenado buena parte de la actividad artística en Occidente durante los últimos trescientos años. Desde el diseño de un simple ex-libris hasta las más complejas creaciones de arquitectos, decoradores o escenógrafos, las referencias más o menos sutiles a las manifestaciones originales del arte del Antiguo Egipto se han venido produciendo como resultado de una actitud impulsada tanto por la curiosidad artística como por la búsqueda de lo exótico desde las primeras décadas del Setecientos. La historia del resurgimiento del arte Egipcio, como la del Griego, el Romano o el Gótico, forma parte de la historia del arte de la Edad Contemporánea. Las líneas siguientes sólo aspiran a mostrar ciertos aspectos de esta historia, la de la imagen egipcia del arte occidental La Prehistoria del Neoegipcio se remontaría hasta

  3. El Estado laico y Occidente

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    Roberto Blancarte Pimentel

    2016-01-01

    Full Text Available ¿A qué se refieren por Occidente sus detractores? ¿Cómo lo concebimos nosotros mismos? ¿Cuáles son sus valores e instituciones centrales? ¿Cómo entendemos la expansión de esos valores e instituciones y su relación con otras culturas? ¿Son la secularización y la laicidad de las instituciones políticas un elemento central y específico de nuestra cultura? ¿Son parte integrante de lo que algunos grupos consideran la agresión de Occidente hacia sus sociedades? ¿Es compatible la secularización de la sociedad y la laicización de las instituciones políticas, del Estado o de la esfera pública, con otras culturas? Más allá de las implicaciones en materia de violencia o, eventualmente, de estrategia militar, es evidente que las respuestas que se den a estos interrogantes tienen múltiples consecuencias sobre la estabilidad social, la seguridad, las migraciones, las libertades, las concepciones de vida y sobre todo, sobre las formas de convivencia social. Entonces tenemos que detenernos para saber quiénes somos ante nosotros mismos y los demás. En este artículo se presenta una posible respuesta a estos interrogantes.

  4. Plantas y hongos tintóreos de los wichís del Gran Chaco

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    María Eugenia Suárez

    2012-06-01

    Full Text Available Se presentan los resultados de una investigación etnobotánica que trata los tintes vegetales y fúngicos entre los indígenas wichí del Chaco Semiárido. Se realizaron trabajos de campo con informantes calificados y ocasionales de ambos sexos en localidades de las provincias argentinas de Salta y Formosa. Asimismo, se hizo una revisión minuciosa de la bibliografía vinculada con el tema. Se encontraron 24 especies de plantas y 2 de hongos que son usadas para colorear productos textiles realizados a partir de fibras de cháguar (Bromelia hieronymi y B. urbaniana. Se proporcionan informaciones y detalles sobre los nombres vernáculos de las especies, las partes usadas, los procedimientos de tinción y los colores logrados. El número total de plantas tintóreas encontrado es alto comparado con los que fueron citados para otras etnias chaquenses y se registraron especies que antes no fueron mencionadas como tintóreas entre los wichís.Dye plants and fungi among the Wichí people of the Gran Chaco. This paper presents the results of an ethnobotanical investigation into plant and fungal dyes used by the Wichí people of the Semiarid Chaco. Fieldwork was carried out with occasional and key informants, both men and women, in several locations of Salta and Formosa provinces in Argentina. Moreover, a detailed examination of the bibliography on the topic was conducted. Twenty-four plant species and two fungi that are used for coloring textile products made from cháguar fibers (Bromelia hieronymi and B. urbaniana were found. Information and details on the vernacular names of the species, the parts that are used, the dying technique and the colors obtained are provided. The total number of dye plants found is high compared with the ones cited among other Chaco ethnic groups, and records were made of species that had not previously been mentioned among the Wichí people as being used for dyes.

  5. Sustainable management of the Gran Chaco of South America: Ecological promise and economic constraints

    Energy Technology Data Exchange (ETDEWEB)

    Bucher, E.H.; Huszar, P.C.

    1999-10-01

    The vast plain known as the Gran Chaco is a natural region of more than 1--3 million square kilometers, the second largest natural biome in south America, with only the Amazon region being larger. It extends over parts of Argentina, Bolivia, Paraguay and, marginally, Brazil. The original landscape of the region was mostly a park land with patches of hardwoods intermingled with grasslands. Increasing human encroachment, largely by poor campesinos, with associated overgrazing, excessive timber harvesting, charcoal production and over-exploitation of wildlife, is transforming the region into a dense and unproductive shrub land and is contributing to increasing rural poverty. A management system for the sustainable use of the Chaco has been developed based on a multiple-species ranching system that includes beef, timber, charcoal and wildlife production. An evaluation of the management system finds that it is capable of protecting and enhancing the resource base, while providing higher economic returns in a sustainable manner. However, high initial costs, as well as a divergence between the best interests of campersinos and society, jeopardize the feasibility of the managed system.

  6. Occidentalisms. Images of 'the West' in Egypt

    NARCIS (Netherlands)

    Woltering, Robbert Antonius Fransiscus Leonardus

    2009-01-01

    This thesis researches images of ‘the West’ in contemporary Egyptian non-fiction. These images – or: Occidentalisms - are found to have a history going back to the early nineteenth century, and are clearly related to political and social developments in Egypt and the wider Arab world, in which

  7. UTILIZACIÓN DEL ANÁLISIS MULTIVARIANTE PARA LA SISTEMATIZACIÓN DEL COMPONENTE ALFARERO DEL CHACO PREHISPÁNICO (Using Multivariate Analysis to Systematize the Ceramic Assemblage from Prehispanic Chaco

    Directory of Open Access Journals (Sweden)

    Guillermo N. Lamenza

    2015-11-01

    characterized as the second most wooded region in South America after the Amazon rainforest. It is divided from north to south into three areas: Northern Chaco, Central Chaco, and Southern Chaco. The first area is spread across Brazil, Paraguay, and Bolivia, while the remaining two areas are both in Argentina. The Argentine Chaco is further subdivided, in archaeological terms, into Paraguay-Parana Riverside, Central, and Subandino. The results of the latest research, which aimed at understanding the definition and configuration of prehistoric settlements through the archaeological analysis of ceramic remains, are presented. In this case, multivariate analyses were performed using numerical taxonomy techniques. The results were obtained based on an arrangement that links together the archaeological sites and allows the characterization of groups, the setting of frequencies, the evaluation and proposed dispersal of traits correlations, and the forming of useful identities to be used as diagnostic indicators. This type of analysis provides promising results to assess the degree of interaction of the Chacoan prehispanic societies, and enables progress towards a broader regional characterization.

  8. Volcanic stratigraphy and evidence of magma mixing in the Quaternary Payún Matrú volcano, andean backarc in western Argentina Estratigrafía volcánica y evidencia de mezcla de magmas en el volcán Payún Matrú del Cuaternario, en el retroarco andino de Argentina occidental

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    Irene R Hernando

    2012-01-01

    Full Text Available The Payún Matrú Volcanic Field is located in the Payenia Basaltic Province of the recent back-arc of western Argentina (35°S-38°S. This province is younger than 5 Ma, and most of its volcanic activity took place since 2 Ma. The Payún Matrú Volcanic Field contains two composite volcanoes, Payún Matrú and Payún Liso, and two basaltic fields in an E-W oriented zone, located east and west of the Payún Matrú volcano. Payún Matrú is the largest volcano of this volcanic field, and consists of a shield-shaped edifice with a circular summit caldera of 8 km in diameter. The composition of both composite volcanoes is alkaline and predominantly trachytic, having also minor intermediate lavas. The basaltic fields consist of basalts and trachybasalts, with clinopyroxene and abundant olivine as phenocrysts and also in the groundmass. Textures indicating mixing and mingling processes, such as dusty plagioclases along with clear ones, biotite replaced by anhydrous minerals and two groundmasses with a fluid-fluid relationship, are common in the early pre-caldera stage of Payún Matrú and some post-caldera lavas. The latest post-caldera lavas are trachytic, with clean sanidine phenocrysts without disequilibrium textures. A remarkable characteristic of the Payún Matrú Volcanic Field is the fact that the Payún Matrú caldera is surrounded by basaltic fields at its base, while no basalts were erupted in the caldera region. We propose that the absence of basaltic lavas in the Payún Matrú volcano is due to the presence of a magmatic chamber below it, and that the mafic magmas rising from deeper levels were unable to erupt without interaction with more evolved melts. Intermediate hybrid magmas produced as a consequence of magma mixing and mingling between basaltic and trachytic magmas, are present in the early and mid-history of Payún Matrú volcano. We present here new information about the Quaternary Payún Matrú Volcanic Field derived from field

  9. Fusion Culture : Fashion beyond Orientalism and Occidentalism

    OpenAIRE

    Lehnert, Gertrud; Mentges, Gabriele

    2017-01-01

    Tagungsbericht zu 'Fusion Culture: Fashion beyond Orientalism and Occidentalism', Universität Potsdam, 5. bis 7. November 2009 Die von Gabriele Mentges (Dortmund) und Gertrud Lehnert (Potsdam) veranstaltete und von der Volkswagen Stiftung geförderte Tagung befasste sich mit dem Thema 'Orientalismus und Mode' zum einen unter historischen Aspekten, zum anderen unter gegenwärtigen Bedingungen, in denen von 'Orientalismus' kaum noch die Rede sein kann. Denn längst haben wechselseitige Bezüge ...

  10. Study of a cutaneous leishmaniasis outbreak in General Vedia, Province of Chaco, 1996 Surto de leishmaniose cutânea em General Vedia, Provincia de Chaco, 1996

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    O. Daniel SALOMON

    2001-04-01

    Full Text Available Between March and July 1996, a focalized epidemic outbreak of cutaneous leishmaniasis in General Vedia, province of Chaco, associated to the gallery forest of the Oro river was verified. The incidence rate in the area, which was 0-2/000 cases in preceding years, reached 8/000 cases in 1996. The risk of symptomatic infection was similar between sexes, but was different when analizing the different age groups by sex, suggesting a greater relative importance of the peridomestic transmission for the females and of the transmission in the subtropical forest for the males. Specimens of Lutzomyia intermedia, a species already incriminated as a vector of Leishmaniasis in other provinces of northern Argentina, were captured and identified in the focus locality in May 1996. The possible causes of the outbreak related to the climatic variables and the vector abundance are analyzed and the results in the framework of possible preventive and control activities are discussed.Entre março e julho de 1996, foi verificado um surto epidêmico focalizado de leishmaniose cutânea na localidade de Geral Vedia, província de Chaco, associado com a floresta de galeria do rio de Oro. A taxa de incidência na área que era 0-2/000 casos em anos anteriores, alcançou 8/000 casos em 1996. O risco de infecção sintomática era semelhante entre sexos, mas era diferente quando foram analizados os grupos de idade diferentes segundo sexo, sugerindo maior importância relativa da transmissão na área peridoméstica nas mulheres e da transmissão na floresta subtropical nos homens. Espécimes de Lutzomyia intermedia, espécie já incriminada como vetor de Leishmaniose em outras províncias do norte da Argentina, foram capturadas e identificadas na localidade em maio de 1996. São analisadas as possíveis causas do surto relacionadas às variáveis climáticas e a abundância do vetor e os resultados são discutidas na estrutura de possíveis atividades de prevenção e

  11. AVANCES EN BIOARQUEOLOGÍA DEL CHACO BOREAL (Advances in the Bioarchaeology of Northern Chaco

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    Guillermo N. Lamenza

    2015-12-01

    Full Text Available Las investigaciones bioantropológicas llevadas a cabo en el Gran Chaco sudamericano han comenzado a revertir el estado de desconocimiento que sumía a la región. En esta oportunidad se presentan los avances de los análisis de los materiales recuperados en el sitio arqueológico Puerto 14 de Mayo, cuya particular importancia reside en ser el único en el Chaco boreal abordado de manera sistemática. Sucesivas excavaciones arqueológicas han puesto de manifiesto entierros humanos datados en ca. 1800 años AP (LP2897 y LP3167. Se pudo constatar la presencia de al menos seis individuos, cinco adultos y un subadulto. A partir del análisis paleopatológico se determinaron posibles características del modo de vida del grupo, considerando una dieta con bajos niveles de hidratos de carbono y el consumo de alimentos de características abrasivas. Estos resultados permiten introducir nueva información en una región prácticamente inexplorada en términos arqueológicos y contribuye a la comprensión del marco espacio-temporal de las ocupaciones humanas de las tierras bajas sudamericanas. ENGLISH: Bioanthropological research carried out in the South American Gran Chaco has begun to address the lack of such knowledge in the region. Here we present the analysis of materials recovered at the site Puerto 14 de Mayo, whose particular importance lies in being the only site in the Chaco Boreal that has been systematically addressed archaeologically. Successive archaeological excavations have revealed human burials dated to ca. 1800 B.P. (LP2897 and LP3167, in which there are at least six individuals, five adults and one subadult. Through paleopathological analysis, possible features of the group’s way of life were determined, such as a diet with low levels of carbohydrates and the consumption of food with abrasive characteristics. These results allow us to add new information to a virtually unexplored archaeological region and contribute to an

  12. Padrões de distribuição e diversidade de espécies da mirmecofauna (hymenoptera, formicidae) de uma savana estépica (chaco) no município de Porto Murtinho, Mato Grosso do Sul, Brasil

    OpenAIRE

    Souza, Paulo Robson de

    2014-01-01

    O Gran Chaco é o único bosque seco subtropical do mundo. Considerado a segunda floresta mais extensa da América do Sul, ocorre preponderantemente na Argentina, Paraguai e Bolívia, sendo que apenas sete centésimos da sua área localizam-se no Brasil, no extremo sul da planície pantaneira, onde apresenta quatro fitofisionomias mais marcantes e diversas espécies vegetais endêmicas. Apesar de sua reconhecida importância ecológica no contexto continental, a fração brasileira do Chaco passa por séri...

  13. Ampliación de la distribución de Phrynops hilarii (Pleurodira: Chelidae en Argentina

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    Derocco, Natacha N.

    2005-01-01

    Full Text Available Phrynops hilarii presenta una amplia distribución en la región noreste de la República Argentina, en las provincias de Buenos Aires, Chaco, Córdoba, Corrientes, Entre Ríos, Formosa, Misiones, Santa Fe, Santiago del Estero (Cabrera, 1998, incluyendo poblaciones establecidas por antropocoria en Mendoza (Richard, 1999.

  14. Formosa: tierra prometida-tierra arrasada. La Argentina de los márgenes (1884-1955)

    OpenAIRE

    Girbal Blacha, Noemí

    2014-01-01

    In times of Modern Argentina (1880 -1930) marginality is part of the agro- export model; structured around Buenos Aires port and the Pampas livestock-cereal, the recipient of massive immigration, growing urbanization and foreign investment concentration. Marginality does not always mean isolation. This is the case of Argentinean Gran Chaco situated in northeastern Argentina, crossed by 3 railways and major waterways, which communicate with the powerful metropolitan littoral. Formosa, borderin...

  15. Is ecotourism an alternative to adventure tourism in El Chaco?

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    Daniela Polanco

    2017-07-01

    Full Text Available El Chaco is one of the cantons has excelled in adventure tourism. However, since 2006 this activity has not broken and tourism has been separated from the local development. The objective of the present investigation is to find out the issues that affect the adventure tourism in El Chaco and to propose a new tourism product regarding the zone possibilities. In order to obtain the results, it has been developed a theoretical and methodological investigation focused in interviews and social cartography in Gonzalo Díaz de Pineda and in the cantonal head El Chaco. The main results denote the lack of organization, the high costs and the impacts generated by the construction of the Coca Codo Sinclair hydroelectric power plant. These results make visible the problems and support the suggestion of practicing ecotourism as a new choice of local development in the region.

  16. Canadian Occidental Petroleum Ltd. 1998 annual report

    International Nuclear Information System (INIS)

    1999-01-01

    Financial information from Canadian Occidental Petroleum Ltd. and a review of their 1998 operations was made available for the benefit of shareholders. The company's core oil and gas business activities include exploration, development, production and marketing of crude oil and natural gas. The company produces oil and gas in Canada, Yemen, the Gulf of Mexico and Nigeria. Canadian Occidental also owns a 7.23 per cent share in the Syncrude joint venture. The company is developing new production in Hay, British Columbia, offshore west Africa and offshore northwest Australia. They are also one of North America's top three manufacturers of sodium chlorate. The report presents a summary of operations, a thorough management discussion and analysis of results and provides the customary consolidated financial statements and notes. Overall, 1998 was described as a difficult year financially, due to falling commodity prices. On the operations side, the company experienced its best results to date, producing more oil and gas than ever before. The company also invested over $ 950 million in new projects and opportunities. Some of the Company's most promising projects are located offshore Nigeria, offshore northwest Australia, in the Gulf of Mexico and in western Canada. These projects are expected to add 40,000 BOE of production by early 2000, with promise of attractive returns even at current low oil prices. tabs., figs

  17. Dinámica de la humedad de los combustibles y su relación con la ecología y el manejo de fuego en la región chaqueña occidental (Argentina) I: conceptos básicos

    OpenAIRE

    DEFOSSÉ, G.; BIANCHI, L.; DENTONI M.; KUNST, C.; LEDESMA, R.; BRAVO, S.

    2014-01-01

    El fuego es un modelador de la mayoría de los ecosistemas vegetales del mundo, entre ellos, los correspondientes a la región chaqueña argentina donde asimismo ha sido usado ampliamente como una herramienta de manejo de la vegetación. Dada una fuente de ignición, para que un fuego pueda prosperar deben existir ciertas condiciones. Entre ellas, el contenido de humedad del combustible (CH) juega un rol fundamental ya que su magnitud influirá en la probabilidad de ignición, en el posterior compor...

  18. Gods, Demons and Deceivers: Jesuits Facing Chaco Skies

    Science.gov (United States)

    López, Alejandro Martín

    2015-05-01

    The Jesuit missions located in the Chaco are less known than the ones in Paraguay. They are the last step of the Jesuits' missionary device in the Rio de la Plata region. They were dedicated to 'evangelize' and 'civilize' the aboriginal groups considered more hostile: nomadic hunter-gatherers who adopted the use of horses and were not controlled by the colonial government. These groups were seen by Europeans as a radical otherness. That is why the Jesuits' descriptions of Chaco Indian skies are a very interesting example about European attitudes toward other worldviews. This paper explores the use of different paradigms for interpreting these alternative skies: demonic influence, the deception of sorcerers and an Evemeristic reading of the indigenous worldview. This article also addresses some of the interactions between the aboriginal and Christian skies in the mission context.

  19. Plant antiherbivore defenses in Fabaceae species of the Chaco.

    Science.gov (United States)

    Lima, T E; Sartori, A L B; Rodrigues, M L M

    2017-01-01

    The establishment and maintenance of plant species in the Chaco, one of the widest continuous areas of forests in the South American with sharp climatic variations, are possibly related to biological features favoring plants with particular defenses. This study assesses the physical and chemical defenses mechanisms against herbivores of vegetative and reproductive organs. Its analyses of 12 species of Fabaceae (Leguminosae) collected in remnants of Brazilian Chaco shows that 75% present structural defense characters and 50% have chemical defense - defense proteins in their seeds, like protease inhibitors and lectins. Physical defenses occur mainly on branches (78% of the species), leaves (67%), and reproductive organs (56%). The most common physical characters are trichomes and thorns, whose color represents a cryptic character since it does not contrast with the other plant structures. Defense proteins occur in different concentrations and molecular weight classes in the seeds of most species. Protease inhibitors are reported for the first time in seeds of: Albizia niopoides, Anadenanthera colubrina, Mimosa glutinosa, Prosopis rubriflora, and Poincianella pluviosa. The occurrence of physical and chemical defenses in members of Fabaceae indicate no associations between defense characters in these plant species of the Chaco.

  20. Dinámica de la humedad de los combustibles y su relación con la ecología y manejo de fuego, region chaqueña occidental (Argentina) II: follaje y residuos de árboles y arbustos

    OpenAIRE

    Kunst, Carlos Roberto Guillermo; Ledesma, Ramona Ofelia; Bravo, S.; Defossé, Guillermo Emilio; Godoy, J.; Navarrete, V.

    2017-01-01

    El fuego es fenómeno frecuente en la región chaqueña argentina. El contenido de agua (CH, %) es un factor que define la inflamabilidad de los combustibles vegetales, y sus cambios en magnitud pueden ser usados para comprender la ecología y régimen del fuego en una región, para planificar su uso como prescripto; o como un indicador de riesgo para su prevención. En este trabajo se evaluó la dinámica de CH a través del tiempo del follaje (combustible vivo), hojarasca y residuos leñosos de distin...

  1. Dinámica de la humedad de los combustibles y su relación con la ecologíay manejo de fuego, region chaqueña occidental (Argentina) II: follaje y residuos de árboles y arbustos

    OpenAIRE

    KUNST,C; LEDESMA, R; BRAVO, S.; DEFOSSÉ, G.; GODOY, J.; NAVARRETE, V.

    2014-01-01

    El fuego es fenómeno frecuente en la región chaqueña argentina. El contenido de agua (CH, %) es un factor que define la inflamabilidad de los combustibles vegetales, y sus cambios en magnitud pueden ser usados para comprender la ecología y régimen del fuego en una región, para planificar su uso como prescripto; o como un indicador de riesgo para su prevención. En este trabajo se evaluó la dinámica de CH a través del tiempo del follaje (combustible vivo), hojarasca y residuos leñosos de distin...

  2. Two Views of Liberty, Occidental and Oriental(?

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    Bruno Leoni

    2009-02-01

    Full Text Available This paper, by the late Bruno Leoni, was originally presented at a special meeting of the Mont Pèlerin Society (Tokyo, Sept. 5–10, 1966, and was originally published in the Italian journal Il Politico in 1966. The paper displays Leoni’s fondness for Chinese culture, and is essentially a defense of the unity of mankind. Westerners are often of the belief that the Occidental, or Western, individual freedom-based view of liberty is distinct from the Oriental (Eastern view of liberty. Leoni challenges this perspective. Mill believed that disregard for custom was what made the West both free and different from the rest of the world, while the Oriental approach is more backward and based on blind respect for customs. However, custom has often been invoked both in the East and in the West to oppose and limit the power of tyrants, and to defend or to secure civil or political liberty. Mill argued that disregard of custom accounts for novelty, novelty for diversity of character and culture, and the latter for freedom and progress, but there was an unsurpassed diversity of character and culture when Oriental and Occidental people were put together under the rule of the Roman emperors. Furthermore, the “Orient” was not monotonous, dull, and homogeneous, as Mill presumed; to the contrary, Europe cannot show in any period of its history a variety of races, languages, cultures, philosophies and religions even slightly comparable to those of India or China. In fact, Buddha and Confucius were both concerned mainly with individual freedom. Confucius’s theory of society, in particular, was very individualistic; he clearly formulated for the first time in recorded history that principle of “reciprocity,” the “golden rule” for any liberal society. He maintained that the very fundamental principle for a happy society is “Not doing to others what one does not wish them do to one’s self.” Confucius shared, along with the greatest masters of

  3. Flourishing of Occidentalism in Iran After Cultural Revolution

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    Shalaleh ZABARDAST

    2015-12-01

    Full Text Available Modernity changed the community interests; it idealized individuality and liberal democracy, and based its main aim on pushing religion to the outskirts of human life. Western Christianity adjusted to modernity to justify the developments while Islam accepted it only to the extent of its capacity to authenticate the realities stated by the Qur’an. Orientalism, Occidentalism, and Islamism play impressive role in a variety of contexts today. Occidentalism in its popular variety helps to reinforce the identities. This study considers the power relationship between people and cultures. The roles and the identities are changing throughout history. Nowadays Islamic culture is one of popular subjects to study on. So, the Muslim world and revival of Islamic culture are the beginning of Occidentalism. Occidentalism is developed in the Orient in order to study the West from a non-Western World point of view. It can be referred as revival of identity (for isteghrab in Arab world by Hasan Hanafi or Talibanian or ISIS Occidentalists movements which stand for empowering Arab culture, Wahhabism or Salafism. All are revivalist movements to rapture Islamism as an ideology. This article tries to focus on the concept of Occidentalism in Iran after Iran Cultural Revolution.

  4. Peronismo, diseño institucional y centralización política. Un análisis a partir de dos espacios subnacionales argentinos: Corrientes y Chaco (1946-1955

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    María Silvia Leoni

    2015-12-01

    This article aims to address the imprint which acquired the relationship between the national state and sub-national spaces during the Peronist Governments, between 1946 and 1955. It focuses on the construction of institutional design, taking as the unit of analysis two peripheral areas of the Argentine’s Northeast: Corrientes and Chaco. These scenarios –with different political and institutional developments–, experienced during the peronism important transformations from the implementation of a policy of centralization of power. The adoption of a comparative perspective allows to identify similarities and differences between mechanisms, strategies and results of this policy in the interior of the Argentina.

  5. Carbon emissions from agricultural expansion and intensification in the Chaco.

    Science.gov (United States)

    Baumann, Matthias; Gasparri, Ignacio; Piquer-Rodríguez, María; Gavier Pizarro, Gregorio; Griffiths, Patrick; Hostert, Patrick; Kuemmerle, Tobias

    2017-05-01

    Carbon emissions from land-use changes in tropical dry forest systems are poorly understood, although they are likely globally significant. The South American Chaco has recently emerged as a hot spot of agricultural expansion and intensification, as cattle ranching and soybean cultivation expand into forests, and as soybean cultivation replaces grazing lands. Still, our knowledge of the rates and spatial patterns of these land-use changes and how they affected carbon emissions remains partial. We used the Landsat satellite image archive to reconstruct land-use change over the past 30 years and applied a carbon bookkeeping model to quantify how these changes affected carbon budgets. Between 1985 and 2013, more than 142 000 km 2 of the Chaco's forests, equaling 20% of all forest, was replaced by croplands (38.9%) or grazing lands (61.1%). Of those grazing lands that existed in 1985, about 40% were subsequently converted to cropland. These land-use changes resulted in substantial carbon emissions, totaling 824 Tg C between 1985 and 2013, and 46.2 Tg C for 2013 alone. The majority of these emissions came from forest-to-grazing-land conversions (68%), but post-deforestation land-use change triggered an additional 52.6 Tg C. Although tropical dry forests are less carbon-dense than moist tropical forests, carbon emissions from land-use change in the Chaco were similar in magnitude to those from other major tropical deforestation frontiers. Our study thus highlights the urgent need for an improved monitoring of the often overlooked tropical dry forests and savannas, and more broadly speaking the value of the Landsat image archive for quantifying carbon fluxes from land change. © 2016 John Wiley & Sons Ltd.

  6. Serologic evidence of canine parvovirus in domestic dogs, wild carnivores, and marsupials in the Argentinean Chaco.

    Science.gov (United States)

    Orozco, María Marcela; Miccio, Luciano; Enriquez, Gustavo Fabián; Iribarren, Fabián Eduardo; Gürtler, Ricardo Esteban

    2014-09-01

    The transmission of pathogens between domestic dogs and generalist wildlife species may be modified by environmental degradation, biodiversity losses, host densities, and increased contact rates in remnant forest patches. A serologic survey of canine parvovirus (CPV) in rural domestic dogs and wild mammals was conducted in two neighboring rural areas (disturbed and protected) from Pampa del Indio, northeastern Argentina, between 2008 and 2011. A total of 174 domestic dogs and 26 wild mammals-4 crab-eating foxes (Cerdocyon thous), 3 crab-eating raccoons (Procyon cancrivorus), 17 white-eared opossums (Didelphis albiventris), and 2 gray four-eyed opossums (Philander opossum)-were examined for antibodies to CPV using a hemagglutination inhibition assay. Domestic dogs were numerous and their movements unrestricted. The main function of dogs differed significantly between areas, with more dogs used for herding or hunting around the protected area. The seroprevalence of antibodies to CPV in dogs from both areas was very high (93.9-94.6%) and increased steeply with age. Nearly all carnivores and marsupials showed high exposure to CPV. Although a higher exposure to CPV was expected in wild mammals from disturbed areas as a result of enhanced contact between dogs and wildlife, no significant differences were found between areas. To the authors' knowledge, this study is the first to document exposure to CPV of free-ranging Pr. cancrivorus, D. albiventris, and Ph. opossum, and include a detailed demographic study of the domestic dog populations living in the area. This study highlights that dogs and wildlife have potential opportunities for contact and shows that the edges of the protected area may be as suitable as other fragmented areas for the transmission of CPV. Rural domestic dogs may pose serious threats to the health and conservation of wild carnivores in both disturbed and protected areas, especially in the Gran Chaco, where habitat fragmentation is severely

  7. La crisis europea en Revista de Occidente (1923-1936

    Directory of Open Access Journals (Sweden)

    Juan Pablo Camazón Linacero

    2000-01-01

    Full Text Available En este artículo, el autor analiza la crisis europea y la depresión económica en el periodo de entreguerras, prestando atención principalmente a las repercusiones de estos hechos en la obra de José Ortega y Gasset y en Revista de Occidente. La crisis de conciencia y la idea de Europa, el papel de las élites y el acceso de las masas al poder social son las cuestiones fundamentales tratadas por los escritores de Revista de Occidente. También explica las soluciones económicas que propuso la revista.In this article, the author analyses the European crisis and the economic Depression in the inter-war period, paying attention principalty to the repercussions of these events in the work of José Ortega y Gasset and in Revista de Occidente. The chsisconsciounsness and the idea of Europa, the role of the élites and the accession of the masses to the social power are the fundamental questions treated by the whters of Revista de Occidente. Also, he explains the economic solutlons that the review proposes.

  8. Ecosystems and diversity of the Sierra Madre Occidental

    Science.gov (United States)

    M. S. Gonzalez-Elizondo; M. Gonzalez-Elizondo; L. Ruacho Gonzalez; I. L. Lopez Enriquez; F. I . Retana Renteria; J. A. Tena Flores

    2013-01-01

    The Sierra Madre Occidental (SMO) is the largest continuous ignimbrite plate on Earth. Despite its high biological and cultural diversity and enormous environmental and economical importance, it is yet not well known. We describe the vegetation and present a preliminary regionalization based on physiographic, climatic, and floristic criteria. A confluence of three main...

  9. Argentina chiama Italia: Friuli risponde

    Directory of Open Access Journals (Sweden)

    Silvana Serafin

    2010-03-01

    Full Text Available The study analyzes the migratory waves from Friuli which, from the 1870s up to the post-World War II years, extensively moved towards Argentina, settling in the areas around the cities of Santa Fe, Cordoba, Entre Ríos, Chaco and Buenos Aires, but reaching also regions as far away as Patagonia. The accurate and well diffused net of the Fogolār Furlan, besides its function as friendly society, also provides to the promulgation of ancient traditions and mores among the new generations, transmitting on to them the cultural, linguistic and ethnic memory of the motherland. Epistles, tales, novels and poems form a paideia which is thus constantly being enlivened, eveng among those who assumed Argentinian nationality or were born in the country. Of utmost interest is, therefore, the resulting literary corpus, representing as it does a renewed search for identity in the form of a dialogue with the world, extending itself well beyond the contingency of boundaries and transmitting the universal essence of logos.

  10. Potential of native forests for the mitigation of greenhouse gases in Salta, Argentina

    International Nuclear Information System (INIS)

    Manrique, Silvina; Franco, Judith; Nunez, Virgilio; Seghezzo, Lucas

    2011-01-01

    Carbon stocks were assessed in three archetypal forest ecosystems in the province of Salta, Argentina, namely Yungas, Chaco, and shrublands located around Chaco. Over a total area of about 7000 m 2 , detailed measurements of woody biomass were conducted using structural information such as diameter at breast height (dbh), total height, and stem height. At the same time, the wet weight of herbaceous, shrubs, and litter was registered within that area. Soil samples were also collected to determine parameters such as bulk density and organic carbon. The above-ground tree biomass (AGB) was quantified by two non-destructive methods. This biomass was expressed from each reservoir studied in t.ha -1 and the carbon content was then calculated using a factor of 0.5. Carbon stocks in the ecosystems studied were 162, 92, and 48 tC.ha -1 for Yungas, Chaco, and shrublands, respectively. Our results show that carbon is concentrated in the soil or as AGB. The latter is the most important reservoir in Yungas, while the soil plays this role in the other two, drier environments. In the province of Salta, native forests play a significant role in the mitigation of greenhouse gases. Our results reveal the magnitude of carbon stocks in some characteristic regional native forests, and estimate their carbon sequestration potential. These results could be useful to inform policy makers in charge of negotiations related to conservation and sustainable management of native forests, and be a relevant input for the formulation of more comprehensive land use planning processes in the region. -- Highlights: → We assessed carbon stocks in forest ecosystems in the province of Salta, Argentina. → The studied areas are located within ecosystems called Yungas, Chaco and shrublands. → Main carbon reservoirs in all ecosystems were found in above-ground tree biomass and soil. → Carbon stocks could be restored, maintained or increased with forest management. → We conclude that the studied

  11. Active dispersal of Triatoma infestans and other triatomines in the Argentinean arid Chaco before and after vector control interventions.

    Science.gov (United States)

    Abrahan, Luciana; Gorla, David; Catalá, Silvia

    2016-06-01

    Peridomestic structures are considered the main sites where Triatoma infestans (Hemiptera: Reduviidae) remain and disperse, representing the first risk factor for intradomestic invasion, even after vector control activities. This study analyzed T. infestans dispersal during vector control interventions in six rural houses of the arid Chaco (La Rioja, Argentina). Flying and walking dispersers were captured during five months of two consecutive warm seasons after insecticide spraying of intra- and peridomiciles. These data were compared with previous published data in the same scenario but without insecticide spraying in peridomiciles. Recorded climatic conditions were favorable for active dispersion during the study. Total number of T. infestans dispersers moving among domestic habitats decreased after insecticide spraying. Sylvatic triatomines T. guasayana, T. eratyrusiformis, T. garciabesi, and T. platensis, not targeted by insecticide spraying, were captured simultaneously within peridomestic areas and showed higher invasion pressure than T. infestans. Adult T. infestans peridomestic populations showed high nutritional status, indicating low dispersion probability. Some peridomiciles remained infested at the end of the study. However, no intradomiciles were recolonized. These results suggest that there is a low probability of intradomestic recolonization by active dispersion from peridomiciles during 15 months post-spraying. © 2016 The Society for Vector Ecology.

  12. Requerimientos germinativos de enredaderas características del Chaco Serrano de Córdoba, Argentina

    Directory of Open Access Journals (Sweden)

    Anahí Belén D’Agostino

    2012-12-01

    Full Text Available Las enredaderas son elementos conspicuos de la flora de diferentes ecosistemas. Numerosos estudios basados en patrones de distribución y ecología de este grupo de plantas se han realizado a escala regional, se conoce poco sobre los factores que afectan su distribución a nivel local. Se estudiaron los requerimientos germinativos de 21 enredaderas del Bosque chaqueño serrano de Córdoba, las cuales fueron clasificadas en típicas de bosques, matorrales e indiferentes. Se llevaron a cabo experimentos de germinación en tres regímenes de temperatura (15-5ºC, 25-15ºC y 35-20ºC, en luz (12-12hr luz-oscuridad y oscuridad permanente. Se registró el porcentaje final de germinación, el índice de germinación relativa a la luz (GRL y la velocidad de germinación (T50. La temperatura fue el principal factor regulador del proceso germinativo. El GRL y el T50 no registraron diferencias entre fisonomías. Los patrones observados apoyan la idea de que la germinación de este grupo de plantas estaría respondiendo a factores macroclimáticos (estacionalidad del clima y las precipitaciones, más que a un microclima (factores asociados a la fisonomía del sitio. La composición diferencial de enredaderas en los parches de bosques y arbustos no estaría explicada por los factores estudiados, sino por características de las etapas posteriores a la semilla.

  13. [The psychologists in Argentina. Quantitative data].

    Science.gov (United States)

    Alonso, M M

    1994-03-01

    A partial report from a study dealing with Psychology's current status in Argentina is presented. Pursuant to this preliminary study 36,128 psychologists have taken their degree at both State and private universities in Argentina--between 1956, when the first Department of Psychology was created, and 1992. So, over a 32.5-million population (as per the 1991 census), there is a psychologist every 897 inhabitants, or 111 psychologists every 100,000 inhabitants. According to psychologists' geographical distribution, the highest density is to be found in the capital city of Buenos Aires (one psychologist every 246 inhabitants) while the lowest density is to be found in the Province of Chaco (one psychologist every 17,465 inhabitants). During year 1993, a total of 26,726 students have been studying Psychology at the different Argentine universities: Of these, 6,858 have taken their Psychology degree during this academic year. A great majority of psychologists work in the clinical field, being Psychoanalysis their prominent theoretical orientation. Ladies psychologists supposedly account for 85% of the overall number of psychologists. Psychological Associations have 24,878 active psychologists recorded, of which a great majority work in the clinical field.

  14. Argentina; Argentine

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-04-01

    This economical study summarizes the energy situation of Argentina: energy institutions and policy, energy companies (oil, electricity, gas, coal), energy supplies (resources, power production, petroleum, natural gas), prices and tariffs, consumption, economical stakes and perspectives (investments, agreements, projects). Energy data for the 1971-1999 period are summarized in graphs and tables. (J.S.)

  15. Eleventh-century shift in timber procurement areas for the great houses of Chaco Canyon.

    Science.gov (United States)

    Guiterman, Christopher H; Swetnam, Thomas W; Dean, Jeffrey S

    2016-02-02

    An enduring mystery from the great houses of Chaco Canyon is the origin of more than 240,000 construction timbers. We evaluate probable timber procurement areas for seven great houses by applying tree-ring width-based sourcing to a set of 170 timbers. To our knowledge, this is the first use of tree rings to assess timber origins in the southwestern United States. We found that the Chuska and Zuni Mountains (>75 km distant) were the most likely sources, accounting for 70% of timbers. Most notably, procurement areas changed through time. Before 1020 Common Era (CE) nearly all timbers originated from the Zunis (a previously unrecognized source), but by 1060 CE the Chuskas eclipsed the Zuni area in total wood imports. This shift occurred at the onset of Chaco florescence in the 11th century, a time with substantial expansion of existing great houses and the addition of seven new great houses in the Chaco Core area. It also coincides with the proliferation of Chuskan stone tools and pottery in the archaeological record of Chaco Canyon, further underscoring the link between land use and occupation in the Chuska area and the peak of great house construction. Our findings, based on the most temporally specific and replicated evidence of Chacoan resource procurement obtained to date, corroborate the long-standing but recently challenged interpretation that large numbers of timbers were harvested and transported from distant mountain ranges to build the great houses at Chaco Canyon.

  16. The local communities and its relation with the sustainable use of forest resources in Argentina

    International Nuclear Information System (INIS)

    Minaverry, Clara Maria

    2013-01-01

    The indigenous communities (mainly the tobas), inhabiting the Gran Chaco area, northern Argentina, keep valuable cultural, social and environmental traditions that must be protected. In this paper we analyze the present status of national and international law and case law, which could impact in the mentioned area. The two main items to be considered here are the high level of deforestation and the recent enactment of the national law for the protection of native forests, which means a really important improvement in the region.

  17. HLA-DRB1 alleles in four Amerindian populations from Argentina and Paraguay

    Science.gov (United States)

    2009-01-01

    The major histocompatibility complex (MHC) is one of the biological systems of major polymorphisms. The study of HLA class II variability has allowed the identification of several alleles that are characteristic to Amerindian populations, and it is an excellent tool to define the relations and biological affinities among them. In this work, we analyzed the allelic distribution of the HLA-DRB1 class II locus in four Amerindian populations: Mapuche (n = 34) and Tehuelche (n = 23) from the Patagonian region of Argentina, and Wichi SV (n = 24) and Lengua (n = 17) from the Argentinean and Paraguayan Chaco regions, respectively. In all of these groups, relatively high frequencies of Amerindian HLA-DRB1 alleles were observed (DRB1*0403, DRB1*0407, DRB1*0411, DRB1*0417, DRB1*0802, DRB1*0901, DRB1*1402, DRB1*1406 and DRB1*1602). However, we also detected the presence of non-Amerindian variants in Mapuche (35%) and Tehuelche (22%). We compared our data with those obtained in six indigenous groups of the Argentinean Chaco region and in a sample from Buenos Aires City. The genetic distance dendrogram showed a clear-cut division between the Patagonian and Chaco populations, which formed two different clusters. In spite of their linguistic differences, it can be inferred that the biological affinities observed are in concordance with the geographic distributions and interethnic relations established among the groups studied. PMID:21637670

  18. El problema del sujeto en la posmodernidad occidental

    Directory of Open Access Journals (Sweden)

    Mario Magallón Anaya

    2013-01-01

    Full Text Available El art culo cuestiona la tesis hist rica de la construcci n de sujeto moderno en Am rica Latina en los marcos de la democracia liberal, dado que los procesos de incorporaci n del hombre americano al mundo occidental se han presentado de forma contradictoria y ambigua en medio de los debates sobre la formaci n de las categor as de ciudadan a , de democracia y de sociedad civil , lo que lleva a pensar en la naturaleza de los movimientos y representaciones sociales actuales en Am rica Latina, pero tambi n en las pr cticas sociales cotidianas que incluyen lo ideol gico y lo pol tico institucional.

  19. Diálogo entre el islamismo y occidente

    Directory of Open Access Journals (Sweden)

    Ana María MARTÍN GÓMEZ

    2011-05-01

    Full Text Available Este artículo analiza uno de los fenómenos más actuales de nuestras sociedades pluralistas y multiculturales: el encuentro entre la civilización occidental y la islámica. La elaboración de esta nota crítica se ha llevado a cabo tras la lectura de tres libros fundamentales acerca de esta temática: Un paseo por el laberinto. Sobre política y religión en el diálogo entre civilizaciones, de José María García Gómez-Heras, Laicismo, agnosticismo y fundamentalismo de Antonio García-Santesmases, y El islamismo contra el Islam. Las claves para entender el terrorismo yihadista, de Gustavo de Arístegui. A partir de estos tres ensayos, se ha emprendido un estudio filosófico de la situación actual entre el islamismo y Occidente.

  20. Primer registro de Allomyces neomoniliformis (Chytridiomycota y Dictyuchus missouriensis (Oomycota aislados de un suelo agrícola (Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Mónica M. Steciow

    2001-01-01

    Full Text Available Allomyces neomoniliformis y Dictyuchus missouriensis fueron aislados de un suelo agrícola conteniendo materia orgánica (hojas, raíces y tallos en Argentina. Ambas especies son citadas por primera vez para la Argentina y por segunda vez para Sudamérica, siendo el hallazgo más austral para el hemisferio occidental. Constituye el segundo aislamiento en Argentina de especies del género Allomyces y Dictyuchus. Se realizan consideraciones acerca de la distribucion de ambas especies

  1. La Argentina y el Plan Marshall: promesas y realidades Argentina and the Marshall Plan: promises and realities

    Directory of Open Access Journals (Sweden)

    Mario Rapoport

    2009-06-01

    Full Text Available El artículo analiza los intereses y prioridades de la política económica externa de los Estados Unidos y las complejas relaciones entre Washington y el gobierno de Buenos Aires en relación a la puesta en marcha del Plan Marshall de reconstrucción de Europa Occidental. La no participación de la Argentina en él dificultó su proceso de industrialización al restringir su comercio con el viejo continente e impedirle obtener las divisas necesarias para comprar en los EEUU, proveedor fundamental de los bienes que necesitaba.The article analyze both the interests and priorities of the foreign economic policy of the United States and the complex relationship between Washington and the peronist government when President Truman impose the Marshall Plan in Europe making more difficult the industrialisation of Argentina.

  2. Strontium isotopes and the reconstruction of the Chaco regional system: evaluating uncertainty with Bayesian mixing models.

    Directory of Open Access Journals (Sweden)

    Brandon Lee Drake

    Full Text Available Strontium isotope sourcing has become a common and useful method for assigning sources to archaeological artifacts.In Chaco Canyon, an Ancestral Pueblo regional center in New Mexico, previous studiesusing these methods have suggested that significant portion of maize and wood originate in the Chuska Mountains region, 75 km to the West [corrected]. In the present manuscript, these results were tested using both frequentist methods (to determine if geochemical sources can truly be differentiated and Bayesian methods (to address uncertainty in geochemical source attribution. It was found that Chaco Canyon and the Chuska Mountain region are not easily distinguishable based on radiogenic strontium isotope values. The strontium profiles of many geochemical sources in the region overlap, making it difficult to definitively identify any one particular geochemical source for the canyon's pre-historic maize. Bayesian mixing models support the argument that some spruce and fir wood originated in the San Mateo Mountains, but that this cannot explain all 87Sr/86Sr values in Chaco timber. Overall radiogenic strontium isotope data do not clearly identify a single major geochemical source for maize, ponderosa, and most spruce/fir timber. As such, the degree to which Chaco Canyon relied upon outside support for both food and construction material is still ambiguous.

  3. Methicillin-resistant Staphylococcus aureus in hospitalized patients from the Bolivian Chaco

    Directory of Open Access Journals (Sweden)

    Alessandro Bartoloni

    2015-01-01

    Conclusions: Overall, MRSA colonization in inpatients from the Bolivian Chaco was low. However, USA300-LV-related isolates were detected in colonization and infections, emphasizing the importance of implementing control measures to limit their further dissemination in this resource-limited area.

  4. Canadian Occidental joins Hunt as Yemen oil producer

    International Nuclear Information System (INIS)

    Gurney, J.

    1994-01-01

    On 23 September 1993, the Canadian Occidental Petroleum Company initiated the export of 120,000 b/d (barrels a day) of low sulphur, medium gravity crude oil from its Masila Block concession in Yemen. The oil is transported from Masila via a pipeline built by CanOxy and its partners to a new terminal at Ash Shihr, near Mukalla, in the Gulf of Aden. CanOxy is the third operator oil company to produce oil commercially in Yemen. The first, the Hunt Oil Company, began production in December 1987 and its output now totals about 187,000 b/d. The second, Nimir Petroleum, a Saudi venture which took over the facilities developed in the 1980s by two Soviet companies, is currently producing about 10,000 b/d and expects to increase its output to 25,000 b/d during this year. (Author)

  5. Encuentros entre la India y Occidente en el mundo antiguo

    Directory of Open Access Journals (Sweden)

    María Teresa Román López

    1999-01-01

    Full Text Available Hay diversos testimonios sobre relaciones comerciales y culturales que, mucho antes de la caída de Babilonia y hasta el siglo vi de nuestra Era, tenían lugar entre el Próximo Oriente y Occidente, por un lado, y la India por otro. La expedición de Alejandro Magno en la India dio lugar no sólo a contactos militares, sino a debates filosófico-religiosos. Se halla una descripción casi completa de la flora en los autores griegos, y no es posible ignorar el arte grecobúdico que floreció después de la muerte de Alejandro en los reinos helénicos de la frontera. Está demostrado que misioneros budistas fueron enviados por el emperador Ashoka a Siria, Egipto, IVIacedonia, etc. En la época del Imperio romano las relaciones entre la India y el mundo occidental fueron muy frecuentes.There are several testimonies about comercial and cultural relationships that, after the falling of Babilonia and unta the VI century of our edge, were made between next Orient and Occident in one side, and India on the other side. The expedition of Alexander the Great to India made, note only military relations but philosophie and religious debates. It has been found a mostly complete description of the Flora on the greek authors, and it's not posible to ignore the grecobudie art that bloomed after Alexander death at the Helenio Kingdoms on the border. It's preved that budist missioners were send by the Ashoka emperor to Siria, Egipt, Macedonie, etc. On the Román Empire edge the relationships between India and the Occident worid were so frecuent.

  6. Hosts and vectors of Trypanosoma cruzi discrete typing units in the Chagas disease endemic region of the Paraguayan Chaco

    OpenAIRE

    ACOSTA, NIDIA; L?PEZ, ELSA; LEWIS, MICHAEL D.; LLEWELLYN, MARTIN S.; G?MEZ, ANA; ROM?N, FABIOLA; MILES, MICHAEL A.; YEO, MATTHEW

    2017-01-01

    SUMMARY Active Trypanosoma cruzi transmission persists in the Gran Chaco region, which is considered hyperendemic for Chagas disease. Understanding domestic and sylvatic transmission cycles and therefore the relationship between vectors and mammalian hosts is crucial to designing and implementing improved effective control strategies. Here we describe the species of triatomine vectors and the sylvatic mammal reservoirs of T. cruzi, in different localities of the Paraguayan and Bolivian Chaco....

  7. Presencia de zearalenona en pasturas del este de Chaco

    Directory of Open Access Journals (Sweden)

    SALVAT, A.E.1

    2013-04-01

    Full Text Available Natural occurrence of zearalenone in grassland, improved pastures and feeds for cattle in eastern Chacoprovince (Argentina was surveyed. Besides, isolation, identification and toxicogenic capacity of several Fusariumspecies were carried out. HPLC and ELISA techniques were used for detection of the toxin. In 17 of 29 samples zearalenone presence was confirmed. Sixty- three Fusarium isolates corresponding to Fusarium cf. acuminatum F. chlamydosporum, F. equiseti, F. oxysporum and F. semitectum were identified. On the other hand, in vitro production of zearalenone was verified in 34 of these isolates.Key words: mycotoxins, Fusarium, grasses.

  8. La psicología de la educación en Argentina: raíces, desarrollos y perspectivas

    OpenAIRE

    Roselli, Nestor Daniel

    2017-01-01

    La Psicología de la Educación en Argentina tiene algunos rasgos evolutivos y estructurales comunes a otros países latinoamericanos y europeos, pero otras características son sin duda propias, determinadas por factores históricos particulares. La psicología emerge como disciplina autónoma de la mano del amplio movimiento positivista que dominó el pensamiento occidental en la segunda mitad del siglo XIX. En Argentina el positivismo impregnó no sólo a la psicología, sino también a la pedagogía. ...

  9. Environmental Justice Screening Method (EJSM) Score, San Joaquin Valley CA, 2013, Occidental College and UC Berkeley

    Data.gov (United States)

    U.S. Environmental Protection Agency — The Cumulative Impacts (CI) screening method is jointly being developed by Manuel Pastor, Jim Sadd (Occidental College), and Rachel Morello-Frosch (UC Berkeley) ....

  10. De la industria taninera al desplazamiento de la actividad textil en la provincia del Chaco como consecuencia de la producción sojera

    Directory of Open Access Journals (Sweden)

    Alicia Carlino

    2012-11-01

    Full Text Available La historia económica de la Argentina distingue dos etapas signadas por una importante integración a los mercados internacionales. La primera de ellas se relaciona con el modelo agroexportador que tuvo plena vigencia entre los años 1880 y 1930. La segunda es la que estamos atravesando actualmente, y que comenzó con fuerza luego de la crisis del año 2001-2002. Es la nueva fase de expansión de las exportaciones de los productos primarios, particularmente la soja, alentados por el incremento de la demanda china. Tanto la primera como la segunda, impactaron fuertemente sobre la economía provincial del Chaco. En el primer caso, impulsando la producción taninera, y en el segundo, desplazando actividades tradicionales como la textil algodonera. El presente trabajo pretende realizar una comparación de estas dos etapas, atendiendo al impacto de cada una de ellas sobre la economía chaqueña. Se utilizarán fuentes primarias y secundarias. Se buscarán complementar las dimensiones cuantificables y cualificables de la realidad analizada. Se seleccionarán variables e indicadores, pertinentes a la temática, que permitan el análisis comparado de las dos etapas mencionadas. 

  11. Is imidacloprid an effective alternative for controlling pyrethroid-resistant populations of Triatoma infestans (Hemiptera: Reduviidae in the Gran Chaco ecoregion?

    Directory of Open Access Journals (Sweden)

    Guillermo Carvajal

    2014-09-01

    Full Text Available The prevention of Chagas disease is based primarily on the chemical control of Triatoma infestans (Klug using pyrethroid insecticides. However, high resistance levels, correlated with control failures, have been detected in Argentina and Bolivia. A previous study at our laboratory found that imidacloprid could serve as an alternative to pyrethroid insecticides. We studied the delayed toxicity of imidacloprid and the influence of the blood feeding condition of the insect on the toxicity of this insecticide; we also studied the effectiveness of various commercial imidacloprid formulations against a pyrethroid-resistant T. infestans population from the Gran Chaco ecoregion. Variations in the toxic effects of imidacloprid were not observed up to 72 h after exposure and were not found to depend on the blood feeding condition of susceptible and resistant individuals. Of the three different studied formulations of imidacloprid on glass and filter paper, only the spot-on formulation was effective. This formulation was applied to pigeons at doses of 1, 5, 20 and 40 mg/bird. The nymphs that fed on pigeons treated with 20 mg or 40 mg of the formulation showed a higher mortality rate than the control group one day and seven days post-treatment (p < 0.01. A spot-on formulation of imidacloprid was effective against pyrethroid-resistant T. infestans populations at the laboratory level.

  12. Why did occidental modernity fail in the Arab Middle East: the failed modern state?

    OpenAIRE

    Sardar, Aziz

    2011-01-01

    This thesis asks a straightforward but nevertheless a complex question, that is: Why did modernity fail in the Arab Middle East? The notion of modernity in this thesis signifies the occidental modernity which reached the region in many different forms and through various channels. This occidental modernity had an impact on many areas and changed the societies and politics of the region. But these changes stopped short of reaching modernity, in other words it failed to change the society from ...

  13. La misión pentecostal escandinava en el Chaco argentino: Etapa formativa: 1914 - 1945 Scandinavian pentecostal mission in the Argentine Chaco: First stage: 1914-1945

    Directory of Open Access Journals (Sweden)

    César Ceriani Cernadas

    2011-01-01

    Full Text Available El trabajo propone una etnografía histórica sobre la misión pentecostal escandinava entre los aborígenes del Chaco Argentino durante su período formativo. Fue el misionero noruego Berger Johnsen (1888-1945 quien se instaló en el pueblo de Embarcación (provincia de Salta en 1914 con el objetivo de organizar una base misionera para el trabajo evangélico. La indagación pretende sumar conocimiento sobre esta corriente olvidada en los estudios sobre evangelización protestante en la región chaqueña tomando en cuenta cuatro ejes: 1. los valores, el imaginario y las prácticas del misionero nórdico; 2. la recepción aborigen del mensaje pentecostal, observada en los dirigentes y la memoria de los habitantes; 3. la coyuntura regional, religiosa, política y económica, que enmarcó estructuralmente el emprendimiento; 4. la realidad cultural sui generis de la misión de Embarcación, conformada por diversos grupos étnicos del corazón chaqueño y establecida en un naciente pueblo criollo.This paper proposes an historical ethnography of the Scandinavian Pentecostal mission among the aboriginal people of the Argentinean Chaco focusing on its former period. In 1914 a Norwegian missionary, Berger Johnsen (1888-1945, established a Pentecostal base in Embarcación (Province of Salta in order to embrace evangelical work. This study tries to add knowledge to this neglected trend in the studies about Protestant evangelism in the Chaco region. This will be done taking into account four topics: 1. the values, representations and practices of the Nordic missionary; 2. the aboriginal appropriation of the Pentecostal message; 3. the regional context, in terms of religion, politics and economy, framing the missionary enterprise; 4. the sui generis cultural reality of Embarcación mission, characterized by the presence of different ethnic groups from the central Chaco and a novel criollo town.

  14. Notas sistemáticas sobre abejas Meliponini del Chaco (Hymenoptera, Apidae Systematic notes on Meliponini bees of the Chaco Region (Hymenoptera, Apidae

    Directory of Open Access Journals (Sweden)

    Arturo Roig Alsina

    2010-06-01

    Full Text Available Se tratan dos especies características de la Región Chaqueña: Scaptotrigona jujuyensis (Schrottky y Lestrimelitta chacoana n. sp. Se clarifica la identidad de Trigona jujuyensis Schrottky, 1911, y se le designa un neotipo. Se presentan descripciones, ilustraciones y datos de distribución para cada especie.Two species characteristic of the Chaco region are treated in this contribution: Scaptotrigona jujuyensis (Schrottky and Lestrimelitta chacoana n. sp. The identity of Trigona jujuyensis Schrottky, 1911, is clarified and a neotype is designated. Descriptions, illustrations and distributional data are presented for each species.

  15. Herpetofauna, municipality of Porto Murtinho, Chaco region, state of Mato Grosso do Sul, Brazil

    Directory of Open Access Journals (Sweden)

    Souza, F. L.

    2010-01-01

    Full Text Available Among the physiographic regions included in the central South American diagonal of open formations,the Chaco, with some endemic species, represents the southernmost dry area. In Brazil, the Chaco is foundin southwestern corner of Mato Grosso do Sul state, mostly in the municipality of Porto Murtinho along theParaguay and Apa rivers. From February 2008 to December 2009, we carried out an inventory of amphibiansand reptiles in Porto Murtinho, using pitfall traps, time-limited searches, and occasional encounters. A total of34 amphibian and 39 reptile species were registered. Although some typical Chacoan species were found, mostof the species are open area dwellers that also occur in other open biomes, such as the Cerrado and Caatinga.

  16. Chaco Chachalaca (Ortalis canicollis, Wagler, 1830 feeding ecology in a gallery forest in the South Pantanal (Brazil

    Directory of Open Access Journals (Sweden)

    J. Ragusa-Netto

    Full Text Available Cracids are generalist frugivores, which often exploit plant food resources such as flowers and leaves, mainly when fruit production declines. The Chaco chachalaca (Ortalis canicollis is the most abundant cracid in the Pantanal (Brazil, and particularly common in the gallery forests. However, the factors related to their occurrence in this habitat type are unclear. In this study I describe the feeding habits and feeding niche breadth fluctuations of the Chaco chachalaca in relation to food resources abundance and diversity at the Miranda river gallery forest (Southern Pantanal. I also analyzed the relationships between Chaco chachalacas feeding activity and food resources abundance. This parameter (flowers and fruits exhibited significant seasonal differences of abundance in which flowers were plentiful at the end of the dry, while fruits were abundant during the early wet season. However, food resources diversity to Chaco chachalacas exhibited no seasonal difference. Their feeding activity paralleled the availability of food resources, so that when some items were massively available an enhanced number of Chaco chachalacas foraged in the gallery forest, particularly during the prolonged dry season when they extensively used flowers and Genipa americana fruits. In fact, the Chaco chachalaca feeding niche breadth value presented low values in this period, while high values were common in the rest of the year. The flexible diet of this cracid, potentially favors their year round presence in the gallery forest, mainly during the prolonged dry season when the propensity for famine might be high. Since the Chaco chachalaca is among the largest and most abundant canopy frugivores in the gallery forest, it may contribute to forest regeneration, an underscored role due to the impact of annual floods and meandering dynamics on tree loss.

  17. [The "Chaco": eatable medicinal clay in the Peruvian highlands and his properties in digestive diseases].

    Science.gov (United States)

    Castillo Contreras, Ofelia; Frisancho Velarde, Oscar

    2015-01-01

    The inhabitants of the peruvian-bolivian plateau consume a natural substance known as "Chaco", widespread since pre-Columbian era and appreciated for its digestive properties. The Chaco is an edible medicinal clay that is used as slurry with water to restrain dyspeptic discomfort or acid-peptic manifestations. In this contribution we present physicochemical aspects of the composition of the Chaco, experimental animal studies that evaluate its antiulcer effect and in vitro test that studies the antacid property. The proposed mechanism of therapeutic action is due to a cytoprotective effect on the gastric mucosa by independent mechanisms of acid secretion inhibition, as it has no antacid property in vitro. Also it has an adsorptivity to different organic molecules due to their large surface area and tetrahedral charge that makes it to interact with polar substances such as water and toxins. The other purpose of this special contribution is to recognize the coexistence of "Traditional Medicine" and "Western Medicine", a situation which leads to the need for preclinical research of various natural resources.

  18. La frontera oriental de Humahuaca y sus relaciones con el Chaco

    Directory of Open Access Journals (Sweden)

    1990-01-01

    Full Text Available LA FRONTIERE ORIENTALE DE HUMAHUACA ET SES RELATIONS AVEC LE CHACO : 1595-1650. Ce travail fait connaître les résultats de la recherche ethnohistorique sur les contacts interethniques entre les groupes de la Quebrada de Humahuaca et ceux du Chaco, dans le secteur centre-sud de l’aire Andine. En plus de cette zone de transition écologico-culturelle, se sont développées plusieurs types de relations interethniques, modifiées à travers les étapes historiques successives : pré-inca, la domination inca et la conquête espagnole. Outre ces relations, les peuples de la Quebrada de Humahuaca ont eu directement accès au piémont amazonien pour l’utilisation de ressources complémentaires. El presente trabajo da a conocer los resultados de la investigación etnohistórica sobre los contactos interétnicos entre los grupos de la Quebrada de Humahuaca y los del Chaco, en el sector centro sur del área Andina. Dentro de este ámbito de transición ecológico cultural se desarrollaron diversos tipos de relaciones interétnicas modificadas a través de las distintas etapas históricas: preinca, la dominación inca y la conquista española. Además de estas relaciones, los pueblos de la quebrada de Humahuaca accedieron directamente a la ceja de selva para el aprovechamiento de recursos complementarios. EASTERN FRONTIER AND ETHNIC RELATIONS: HUMAHUACA AND CHACO, (1595-1650. This article presents the results of an etnohistorical research on ethnic relations between the native groups of the Quebrada of Humahuaca and those of the Chaco, in the center-south of Andean Region. In this area of ecological and cultural transition, those groups developed various kinds of ethnic relations, modified through different historical periods: pre-inca, the inca rule, and the Spanish conquest. Besides these relations, the peoples of the Quebrada of Humahuaca had direct access to the eastern slope lands to complement their own agrarian resources.

  19. Los primeros objetos de bronce en el occidente de Europa

    Directory of Open Access Journals (Sweden)

    Fernández-Miranda, Manuel

    1995-06-01

    Full Text Available The alloy of copper with tin is used to show cultural relations and exchanges between Bronze Age cultures in western and central Europe. At the beginning, the distribution and location of tin resources explains the variations in bronze composition, but interregional ex-change leads later to a more homogeneous alloy. During the Early Bronze Age the Iberian Peninsula was not connected to the exchange networks of western Europe, and the first true bronzes appear at least two centuries la ter. The tin alloy spread over Iberia from north to south, and arrive to South-east at the end of the Middle Brome Age, due to the isolation of this region.

    A través del uso de la aleación de cobre y estaño en la tecnología metalúrgica de la Edad del Bronce europea se analizan las relaciones culturales e intercambios que tienen lugar entre los diversos grupos culturales. Al principio la disponibilidad de recursos minerales de estaño condicionó la composición de la aleación, pero más tarde el establecimiento de relaciones comerciales condujo a una mayor homogeneización en la producción. La Península Ibérica aparece durante el Bronce Antiguo desconectada de las interacciones actuantes en el Occidente de Europa, acusando un retraso en el conocimiento del bronce de al menos dos siglos. La difusión de la aleación se produce de norte a sur, llegando al Sureste a fines del Bronce Medio como consecuencia de su aislamiento.

  20. Niveles de arsénico y vanadio en aguas naturales en el Departamento de Unión, sudeste de la provincia de Córdoba, Argentina.

    OpenAIRE

    Pérez Carrera, Alejo; Fernández Cirelli, Alicia

    2013-01-01

    En Argentina, existen grandes regiones que por sus características edafoclimáticas, poseen excelentes aptitudes agropecuarias, sin embargo, sufren limitaciones de desarrollo debido a la disponibilidad de agua y la calidad del recurso hídrico disponible. Uno de los elementos químicos presentes en el agua, con mayor impacto sobre la salud humana y animal, es el arsénico. La región afectada, abarca las provincias de Córdoba, La Pampa, Santiago del Estero, San Luis, Santa Fe, Buenos Aires, Chaco,...

  1. Seroprevalence of Hepatitis A Virus, Hepatitis E Virus, and Helicobacter pylori in Rural Communities of the Bolivian Chaco, 2013.

    Science.gov (United States)

    Campolmi, Irene; Spinicci, Michele; Mayaregua, David Rojo; Barahona, Herlan Gamboa; Mantella, Antonia; Lara, Yunni; Roselli, Mimmo; Strohmeyer, Marianne; Corti, Giampaolo; Tolari, Francesco; Pinckert, Joaquín Monasterio; Dalton, Harry R; Bartoloni, Alessandro

    2018-05-01

    In the Bolivian Chaco, south-east of Bolivia, studies conducted over the past three decades reported hepatitis A virus (HAV) and Helicobacter pylori seroprevalences above 90% and 60%, respectively. Hepatitis E virus (HEV) prevalence was previously found to be 6-7% but is probably an underestimate because of the poor sensitivity of the assays used. In November 2013, we conducted a cross-sectional study of 263 healthy volunteers from two rural communities of the Bolivian Chaco, aiming to reassess HAV, HEV, and H. pylori seroprevalence 10-20 years following the previous surveys. Hepatitis A virus seroprevalence was 95%, with universal exposure after the first decade of life; HEV seroprevalence was considerably higher (31-35%) than that previously reported; H. pylori seroprevalence was 59%, with an age-dependent distribution. The high prevalence of these infections suggests that major efforts are still needed to reduce fecal-oral transmission and to improve human health in the Bolivian Chaco.

  2. La configuración geohistórica del territorio en la provincia del Chaco y los proyectos de transporte y energía en el Siglo XXI

    Directory of Open Access Journals (Sweden)

    Mariana Schweitzer

    2014-12-01

    Full Text Available RESUMEN Este artículo presenta la configuración del territorio en la Provincia del Chaco (Argentina como reflejo del papel desempeñado en los modelos de acumulación dominantes desde el Virreinato del Alto Perú hasta la actualidad. Se analizan los procesos de ocupación poblacional, la expansión de las actividades productivas y el avance de las redes viales, ferroviarias, fluviales y energéticas. Para el siglo XXI se han identificado planes y proyectos de transporte y de energía que involucran al territorio chaqueño, tanto aquellos formulados desde instancias supranacionales como los priorizados por agendas nacionales y provinciales, considerando que podrían modificar la estructura territorial y las oportunidades de desarrollo de esta región. Así se considera la posibilidad de que haya un cambio para los territorios que históricamente han quedado relegados y que hoy pasarían a ocupar un nuevo lugar en la geografía de los proyectos de interconexión a escala regional, y que movilizan oportunidades para nuevos proyectos a escala local. ABSTRACT This paper analyses territorial configuration in the Province of Chaco (Argentine, reflecting the role played in dominant accumulation models, from the Viceroyalty of Peru Alto until today. Population processes, productive activities expansion and networks construction (roads, railways, ports, energy installations, are analyzed. For the XXI century, transport and energy plans and projects, involving and the Chaco territory, have been identified. We have taken into account those initiatives promoted from supranational organizations as well as those prioritized in national and provincial agendas, considering they could change territorial structure and development opportunities for this region. In this way we consider the possibility of change for those territories that have been historically relegated and today they would occupy a new place in the geography of regional interconnection projects

  3. Principales criaderos para Aedes aegypti y culícidos asociados, Argentina Main breeding-containers for Aedes aegypti and associated culicids, Argentina

    Directory of Open Access Journals (Sweden)

    Marina Stein

    2002-10-01

    Full Text Available Se identificaron criaderos de Aedes (Stegomyia aegypti en dos ciudades de la provincia del Chaco (Noreste de Argentina: Presidencia Roque Saenz Peña y Machagai. Los recipientes encontrados en los patios de las viviendas capaces de colectar agua se clasificaron según tipo y tamaño, se contaron y examinaron. Aedes aegypti y Culex quinquefasciatus fueron las especies mas abundantes, encontrándose además Cx. maxi, Cx. saltanensis y Ochlerotatus scapularis. Los neumáticos y cajas de baterías para autos fueron los recipientes que más aportaron a la producción de formas inmaduras de los culícidos colectados. Las lluvias fueron un factor importante para la proliferacion de Ae. aegypti, así como también el habito comun en la población de guardar recipientes en sus casas que permitan el desarrollo de estos culícidos.Breeding containers for Aedes (Stegomyia aegypti were identified in two cities of Chaco Province (northeast Argentina: Presidencia Roque Saenz Peña and Machagai. All water-retaining recipients found in house backyards capable to retain water were classified according to their type and size, counted and checked. Aedes aegypti and Culex quinquefasciatus were the most frequently collected species, being also found Cx. maxi, Cx. saltanensis and Ochlerotatus scapularis. Tires and car batteries represented the most important type of container where immature forms of culicids could be found. Rain was an important factor for Ae. aegypti proliferation, as well as the widespread habit of the population of keeping useless containers at home, which allows the development of culicids.

  4. Vasijas conectadas: Asia Occidental y Asia Oriental en la Geopolítica de China

    OpenAIRE

    Yitzhak Shichor

    2016-01-01

    Las regiones de Asia Oriental y Asia Occidental (Oriente Medio) son normalmente tratadas en la literatura académica como dos asuntos separados y distintos dentro de la política exterior china. Los estudios acerca de la política de China en Asia Oriental apenas si mencionan Oriente Medio, mientras que los estudios de Oriente Medio apenas mencionan Asia Occidental. Pero de hecho ambas regiones no sólo están interconectadas en la visión geopolítica de Chin...

  5. Gestión oriental y occidental: un acercamiento a los grandes gurues e ideas empresariales

    OpenAIRE

    Rodríguez López, Gerladyne; Amín Perafan, Julio Cesar; Barriga Gómez, Mateo

    2013-01-01

    En el presente trabajo se describen los aportes más destacados de algunos de los gurúes representativos del ámbito administrativo Oriental y Occidental. En Occidental se cuenta con el legado de Henry Ford, Philip Kotler, Frederick Winslow Taylor, Henry Fayol, Michael Porter, Peter Drucker y Steve Jobs. En Oriente, los gurúes son Akio Morita, Edwards Deming, Kaoru Ishikawa, Familia Toyoda, Masaaki Imai y Taiichi Ohno. A partir de ello, se hacen comparaciones entre las tendencias de administ...

  6. II. Introducción: el Occidente de Colombia y el problema del origen de Cacicazgos

    OpenAIRE

    Dever, Alejandro; Espinosa, Iván; Langebaek, Carl Henrik; Piazini, Emilio

    2015-01-01

    El Valle de Aburrá está localizado en la Cordillera Central de Colombia. Geográficamente hablando, se trata de un valle intermedio entre la cuenca del Río Cauca, ubicada al occidente, y la del Río del Magdalena, localizada al oriente (Figura 1). Desde que se iniciaran estudios arqueológicos en Antioquia, ésta región, y en general el occidente de Colombia, se definió como crucial para comprender el desarrollo de sociedades complejas. Reichel-Dolmatoff (1965: 135), por ejemplo, consideraba que ...

  7. Strontium isotopes reveal distant sources of architectural timber in Chaco Canyon, New Mexico

    OpenAIRE

    English, Nathan B.; Betancourt, Julio L.; Dean, Jeffrey S.; Quade, Jay

    2001-01-01

    Between A.D. 900 and 1150, more than 200,000 conifer trees were used to build the prehistoric great houses of Chaco Canyon, New Mexico, in what is now a treeless landscape. More than one-fifth of these timbers were spruce (Picea) or fir (Abies) that were hand-carried from isolated mountaintops 75–100 km away. Because strontium from local dust, water, and underlying bedrock is incorporated by trees, specific logging sites can be identified by comparing 87Sr/86Sr ratios in construction beams fr...

  8. Spatiotemporal flooding fluctuation analysis: wetland managment Bañado La Estrella, Chaco región, Argentina

    DEFF Research Database (Denmark)

    Gómez Romina, Díaz; Cuellar, Ana Carolina; Brown, Alejandro

    determine the presence of soils with hydromorphic features and species adapted to permanent or temporary flooding conditions. The bed of the Pilcomayo River began regressing to the west about 30 years ago, creating a wetlands known as the “Bañado la Estrella”. We propose an integrated approach, based...... of Bañado La Estrella wetlands which occupies 1682 km2 including the permanently, usually and regularly flooded areas. This spatio temporal analysis shows that during the dry period the permanently flooded areas were reduced 462 km2 of the total wetland area while the usually flooded area occupied 2...

  9. Plan de ordenamiento territorial. Plan estratégico de desarrollo urbano territorial, Presidencia De La Plaza, Chaco, Argentina

    Directory of Open Access Journals (Sweden)

    Alberto Patricio Mahave

    2017-11-01

    Full Text Available El Plan Estratégico Territorial para la Municipalidad de Presidencia de la Plaza pone de manifiesto varios puntos claves, esenciales para el desarrollo equilibrado de las potencialidades y oportunidades dentro del entorno tanto local como externo. La dimensión ambiental incluye temas como la calidad del aire y el agua, la adaptación al cambio climático, la reducción de la vulnerabilidad a las amenazas naturales y la cabertura de los servicios públicos; la dimensión del desarrollo urbano considera los aspectos físicos, económicos y sociales; y la dimensión legal aborda las características de una buena gobernabilidad, entre ellas la transparencia, participación pública y gestión pública moderna. Al mismo tiempo, examina los instrumentos normativos ya que son necesarios para el normal deselvonviemiento de la institución municipal y el desarrollo y crecimiento económico, social, urbano y territorial del municipio. Por ello, se pretende atender cuestiones que hacen al ordenamiento urbano, al espacio público y al medio natural, elementos estructurantes para el buen desarrollo del municipio tanto en lo social como en lo económico, con el objeto de producir acciones tendientes al funcionamiento óptimo del territorio y a la vez sustentable, garantizando a la población un ambiente saludable e integral. El éxito del Plan Estratégico Territorial para la Municipalidad de Presidencia de la Plaza depende de la voluntad política de las autoridades locales como de la ciudadanía, ya que resulta de vital importancia la sostenibilidad de las propuestas e intervenciones en corto, mediano y largo plazo que contribuirán a una modificación adecuada al territorio.

  10. Medical revolution in Argentina.

    Science.gov (United States)

    Ballarin, V L; Isoardi, R A

    2010-01-01

    The paper discusses the major Argentineans contributors, medical physicists and scientists, in medical imaging and the development of medical imaging in Argentina. The following are presented: history of medical imaging in Argentina: the pioneers; medical imaging and medical revolution; nuclear medicine imaging; ultrasound imaging; and mathematics, physics, and electronics in medical image research: a multidisciplinary endeavor.

  11. Argentina's nuclear red herring

    International Nuclear Information System (INIS)

    Perera, J.

    1983-01-01

    The article deals with Argentina's nuclear power programme over the last 30 years, including the country's efforts to be nuclear independent of the United States, as well as its aspirations to be a nuclear supplier to latin America. The latter policy on economic, rather than military grounds for nuclear weapons, has led to Argentina's decision to build a uranian enrichment plant. (U.K.)

  12. Espacios nacionales y espacios regionales. Conflictos y concertaciones en las fronteras chaqueñas de Argentina, Bolivia y Paraguay

    Directory of Open Access Journals (Sweden)

    Figallo, Beatriz J.

    2003-06-01

    Full Text Available From the end of the nineteenth century until the middle of the twentieth, the Gran Chaco was a zone of conflict. Argentina, Bolivia and Paraguay exercised varied and competing influences in the region, reflecting the intentions of each nation to incorporate the Chaco forcibly as part of larger projects of industrialisation and colonisation. This study examines the implementation of these projects, as well as the resistance they generated in the face of the violence visited upon the inhabitants of the region, whether indigenous peoples, mestizos, or whites. From an anthropological perspective, the work also reassesses conflicts in the Chaco region as a problem in the history of inter-American relations, where non-governmental actors determine links between people and government. The article goes on to consider the national and regional contexts to conflict, in which frontiers and boundaries are further concepts and realities to be assessed.

    Desde fines del siglo XIX y hasta mediados del XX, el Gran Chaco constituyó, en procesos asimétricos ejercidos por los estados que terminaron dividiéndose su jurisdicción, la Argentina, Bolivia y Paraguay, una región de disputas, que incluyó guerras, militarización de límites, forzada incorporación en los desarrollos industrializadores y colonizadores. Este trabajo busca conocer la ejecución de aquellas políticas y las resistencias generadas, en espacios que fueron tanto de concertaciones, como de conflictos frente al poder y a la violencia ejercida sobre sus pobladores, indios, mestizos y blancos. El objetivo es también contribuir a enriquecer la historia de las relaciones interamericanas, a través de una perspectiva antropológica, en donde actores no estatales configuran vínculos entre pueblos y gobiernos, y asimismo de una mirada que se dirija simultáneamente hacia la consideración de los contextos nacionales y regionales, en donde fronteras y límites son nociones y realidades a

  13. Classificação sinótica dos campos de pressão atmosférica na América do Sul e sua relação com as baixas do chaco e do noroeste argentino Synoptic classification of the atmospheric pressure fields over South America and its relation to the Chaco and the Argentinean Northwest Lows

    Directory of Open Access Journals (Sweden)

    Gustavo Carlos Juan Escobar

    2012-09-01

    Full Text Available O trabalho apresenta uma classificação dos campos de pressão atmosférica ao nível médio do mar sobre América do Sul, durante as estações de verão e inverno, com o intuito de identificar os principais padrões sinóticos associados à Baixa do Noroeste da Argentina (BNOA e à Baixa do Chaco (BCH. Para isso, a técnica de Análise de Componentes Principais rotacionadas foi aplicada à serie de reanálises do NCEP para o período 1985-2010. Um segundo objetivo foi determinar as principais frequências de variabilidade relacionadas com a atuação de ambos os sistemas, mediante a utilização do método de Análise Espectral. Os resultados destacam cinco padrões de circulação que representam aproximadamente 80% dos casos analisados. Durante o verão, a BCH, localizada entre o norte da Argentina, Paraguai, Mato Grosso do Sul e o sul da Bolívia, está associada principalmente com dois padrões sinóticos. A BNOA está associada apenas com um padrão sinótico, similar ao campo médio sazonal. Já no inverno, a BCH não aparece, confirmando seu caráter térmico, gerada principalmente pela liberação de calor latente, produto da convecção observada na área de atuação deste sistema. A BNOA também está associada apenas com um padrão sinótico durante esta estação. Este padrão é similar ao obtido no verão, porém representando menor porcentagem de variância e relacionado principalmente com perturbações sinóticas. A análise de frequência mostra que o modo de circulação associado à BCH tem um pico de energia em torno dos 17 dias, enquanto que a BNOA apresenta um pico de energia em torno dos 22 dias durante o verão e um relativo aumento da variabilidade sinótica no inverno.This work performs a classification of sea level pressure fields for South America during summer and winter, in order to identify the main synoptic patterns associated with the Northwestern Argentinean Low (NAL and the Chaco Low (CHL. To this purpose

  14. Ethnoastronomy in the Multicultural Context of the Agricultural Colonies in Northern Santa Fe Province, Argentina

    Science.gov (United States)

    Mudrik, Armando

    In this paper, we present a study about cultural astronomy among European colonists and their Argentinean descendants, in the context of a complex interaction between criollos, aboriginals and European colonists from different origins and religions, who settled in the northern area of the Argentinean province of Santa Fe, which is part of the southern Gran Chaco. These colonists arrived among waves of immigration occurring in Argentina in the second half of the nineteenth century and the first half of the twentieth century. Through ethnographic field research among these immigrants and their descendants, we carried out a survey of their astronomical representations and practices, and the connections of these with their social life and farming tasks. Through this we gained an insight as to how the astronomical ideas of immigrants, criollos and aboriginal groups influenced each other, generating a variety of new relations with the celestial realm.

  15. Near Real Time Change-Point detection in Optical and Thermal Infrared Time Series Using Bayesian Inference over the Dry Chaco Forest

    Science.gov (United States)

    Barraza Bernadas, V.; Grings, F.; Roitberg, E.; Perna, P.; Karszenbaum, H.

    2017-12-01

    The Dry Chaco region (DCF) has the highest absolute deforestation rates of all Argentinian forests. The most recent report indicates a current deforestation rate of 200,000 Ha year-1. In order to better monitor this process, DCF was chosen to implement an early warning program for illegal deforestation. Although the area is intensively studied using medium resolution imagery (Landsat), the products obtained have a yearly pace and therefore unsuited for an early warning program. In this paper, we evaluated the performance of an online Bayesian change-point detection algorithm for MODIS Enhanced Vegetation Index (EVI) and Land Surface Temperature (LST) datasets. The goal was to to monitor the abrupt changes in vegetation dynamics associated with deforestation events. We tested this model by simulating 16-day EVI and 8-day LST time series with varying amounts of seasonality, noise, length of the time series and by adding abrupt changes with different magnitudes. This model was then tested on real satellite time series available through the Google Earth Engine, over a pilot area in DCF, where deforestation was common in the 2004-2016 period. A comparison with yearly benchmark products based on Landsat images is also presented (REDAF dataset). The results shows the advantages of using an automatic model to detect a changepoint in the time series than using only visual inspection techniques. Simulating time series with varying amounts of seasonality and noise, and by adding abrupt changes at different times and magnitudes, revealed that this model is robust against noise, and is not influenced by changes in amplitude of the seasonal component. Furthermore, the results compared favorably with REDAF dataset (near 65% of agreement). These results show the potential to combine LST and EVI to identify deforestation events. This work is being developed within the frame of the national Forest Law for the protection and sustainable development of Native Forest in Argentina in

  16. Environmental, land cover and land use constraints on the distributional patterns of anurans: Leptodacylus species (Anura, Leptodactylidae from Dry Chaco

    Directory of Open Access Journals (Sweden)

    Regina Gabriela Medina

    2016-11-01

    Full Text Available Subtropical dry forests are among the most vulnerable biomes to land transformation at a global scale. Among them, the Dry Chaco suffers an accelerated change due to agriculture expansion and intensification. The Dry Chaco ecoregion is characterized by high levels of endemisms and species diversity, which are the result of a variety of climates and reliefs, allowing a wide variety of environments. The amphibian group exhibits a high richness in the Dry Chaco, which has been barely studied in relation to land cover changes. We used ecological niche models (ENMs to assess the potential geographic distribution of 10 Leptodactylus species (Anura, Leptodactylidae, which are mainly distributed within the Dry Chaco. We characterized these distributions environmentally, analyzed their overlap with land cover classes, and assessed their diversity of ecoregions. Also, we evaluated how these species potential distribution is affected by the transformation of land, and quantified the proportional area of the potential distribution in protected areas. We found that temperature seasonality is the main constraint to the occurrence of the species studied, whose main habitats are savannas, grasslands and croplands. The main threats to these species are the effects of climate change over spatial patterns of seasonality, which could affect their breeding and reproduction mode; the loss of their natural habitat; the exposure to contaminants used by intensive agriculture and their underrepresentation in protected areas.

  17. Strontium isotopes reveal distant sources of architectural timber in Chaco Canyon, New Mexico.

    Science.gov (United States)

    English, N B; Betancourt, J L; Dean, J S; Quade, J

    2001-10-09

    Between A.D. 900 and 1150, more than 200,000 conifer trees were used to build the prehistoric great houses of Chaco Canyon, New Mexico, in what is now a treeless landscape. More than one-fifth of these timbers were spruce (Picea) or fir (Abies) that were hand-carried from isolated mountaintops 75-100 km away. Because strontium from local dust, water, and underlying bedrock is incorporated by trees, specific logging sites can be identified by comparing (87)Sr/(86)Sr ratios in construction beams from different ruins and building periods to ratios in living trees from the surrounding mountains. (87)Sr/(86)Sr ratios show that the beams came from both the Chuska and San Mateo (Mount Taylor) mountains, but not from the San Pedro Mountains, which are equally close. Incorporation of logs from two sources in the same room, great house, and year suggest stockpiling and intercommunity collaboration at Chaco Canyon. The use of trees from both the Chuska and San Mateo mountains, but not from the San Pedro Mountains, as early as A.D. 974 suggests that selection of timber sources was driven more by regional socioeconomic ties than by a simple model of resource depletion with distance and time.

  18. Taxonomic status of Paraguay's only endemic bird, the Chaco Nothura Nothura chacoensis (Aves: Tinamidae).

    Science.gov (United States)

    Hayes, Floyd E; RodrÍguez, Oscar; Thalman, Erika R; Castellanos, Emily A; Sterling, John

    2018-03-08

    The Chaco Nothura Nothura chacoensis Conover is endemic to the Chaco of western Paraguay. Originally described as a subspecies of the Spotted Nothura N. maculosa (Temminck), it has been regarded by many authorities as a distinct species based on alleged sympatry with N. maculosa. However, an earlier study revealed no differences in cytochrome b sequences between the two taxa. We reanalyzed the geographic distribution and morphological variation of N. chacoensis and N. maculosa in western Paraguay based on museum specimens. There is no locality where specimens of both taxa were collected, thus there is no evidence for sympatry. Morphologically the two taxa did not differ in any size or shape variable. Plumage characters overlapped in a few specimens. We recorded vocalizations from at least four individuals of N. chacoensis within its known range. Its typical territorial song was a very rapid, relatively monotone trill that was virtually identical with the most frequent territorial song of N. maculosa in length, number of notes, rate of notes, and emphasized frequency, and differed substantially from the songs of other species of Nothura. Based on distributional, morphological, biochemical, and especially vocalization data, we conclude that N. chacoensis should be regarded as a subspecies of N. maculosa.

  19. Ecoanatomía foliar deárboles y arbustos delos distritos chaqueños occidental y serrano (Argentina Leaf ecoanatomy of trees and shrubs from Chacoan Occidental and Serrano Districts (Argentina

    Directory of Open Access Journals (Sweden)

    Ana M Arambarri

    2011-12-01

    Full Text Available El objetivo de este trabajo fue evaluar parámetros micrográficos foliares que permitan comprender mejor la relación planta-ambiente y contribuyan al desarrollo de nuevas tecnologías para el aprovechamiento sustentable y conservación de los bosques de esta región. Se empleó material de hoja de ejemplares recolectados en la región subtropical seca de la provincia chaqueña y material fresco de especies creciendo en zona templado-húmeda para comparar las variaciones de la estructura foliar. Se determinaron densidades por mm-2 de células epidérmicas, estomas y tricomas, tipos de mesofilo y tipo y distribución de los tejidos vascular y de sostén. Se encontró que estos caracteres anatómicos de la hoja son influenciados por una combinación de factores intraespecíficos y del ambiente. Los caracteres xeromórficos puestos de manifiesto fueron: presencia de ceras epicuticulares, estrías cuticulares, estomas hundidos con reborde peristomático, de epidermis bistrata o pluristrata y/o de hipodermis, mesofilo en empalizada o isolateral y abundante esclerénquima. Algunas especies tales como: Celtis ehrenbergiana, C. iguanaea, Jodina rhombifolia, Lycium cestroides y Parkinsonia aculeata, muestran desde caracteres xeromórficos (e.g. hojas anfistomáticas, equifaciales hasta caracteres mesomórficos (e.g. hojas hipostomáticas, bifaciales incluyendo algunos hidromórficos como la ausencia de esclerénquima.The objective of this work was to evaluate foliar micrographic parameters to deepen our understanding of the plant-environment relationships, contributing to new technologies to preserve the forests of this area. Leaf material of specimens collected in chacoan biogeographic province with subtropical and dry climatic conditions, and from species growing in template and humid conditions were studied to compare leaf structure variations. Epidermal cells, stomata and trichomes by unit of area (mm-2, types of mesophyll, sclerenchymatic tissue and distribution were analyzed. These characters are affected by intraspecific and environmental factors. The main xeromorphic traits were: presence of epicuticular waxes, striate cuticle, sunken stomata with peristomatal ridges, epidermis bi or pluristratified and/or hypodermis, whole palisade or bilateral mesophyll with palisade tissue direct toward both epidermis, and presence of sclerenchyma. Some species like: Celtis ehrenbergiana, C. iguanaea, Jodina rhombifolia, Lycium cestroides, and Parkinsonia aculeata, exhibit from xeromorphic (e.g. amphistomatic and equifacial leaves to mesomorphic characters (e.g. hypostomatic and bifacial leaves with some hydromorphic features such as absence of sclerenchyma.

  20. Molecular phylogeography of the Chagas' disease vector Triatoma infestans in Argentina

    Science.gov (United States)

    Pérez de Rosas, A R; Segura, E L; García, B A

    2011-01-01

    Triatoma infestans is the main vector of Chagas' disease in South America between latitudes 10°S and 46°S. A multilocus microsatellite data set of 836 individuals from 27 populations of T. infestans, from all its range of distribution in Argentina, was analyzed. Our results favor the hypothesis of two independent migration events of colonization in Argentina and secondary contacts. The majority of the populations of the western provinces of Catamarca, La Rioja, San Juan and the west of Cordoba province, had almost no shared ancestry with the rest of the populations analyzed. Probably those populations, belonging to localities close to the Andean region, could have been established by the dispersal line of T. infestans that would have arrived to Argentina through the Andes, whereas most of the rest of the populations analyzed may have derived from the dispersal line of T. infestans in non-Andean lowlands. Among them, those from the provinces of Formosa, Chaco, Santiago del Estero and Santa Fe shared different percentages of ancestry and presented lower degree of genetic differentiation. The migratory movement linked to regional economies and possibly associated with passive dispersal, would allow a higher genetic exchange among these populations of T. infestans. This study, using microsatellite markers, provides a new approach for evaluating the validity of the different hypotheses concerning the evolutionary history of this species. Two major lineages of T. infestans, an Andean and non-Andean, are suggested. PMID:21224874

  1. Molecular phylogeography of the Chagas' disease vector Triatoma infestans in Argentina.

    Science.gov (United States)

    Pérez de Rosas, A R; Segura, E L; García, B A

    2011-07-01

    Triatoma infestans is the main vector of Chagas' disease in South America between latitudes 10°S and 46°S. A multilocus microsatellite data set of 836 individuals from 27 populations of T. infestans, from all its range of distribution in Argentina, was analyzed. Our results favor the hypothesis of two independent migration events of colonization in Argentina and secondary contacts. The majority of the populations of the western provinces of Catamarca, La Rioja, San Juan and the west of Cordoba province, had almost no shared ancestry with the rest of the populations analyzed. Probably those populations, belonging to localities close to the Andean region, could have been established by the dispersal line of T. infestans that would have arrived to Argentina through the Andes, whereas most of the rest of the populations analyzed may have derived from the dispersal line of T. infestans in non-Andean lowlands. Among them, those from the provinces of Formosa, Chaco, Santiago del Estero and Santa Fe shared different percentages of ancestry and presented lower degree of genetic differentiation. The migratory movement linked to regional economies and possibly associated with passive dispersal, would allow a higher genetic exchange among these populations of T. infestans. This study, using microsatellite markers, provides a new approach for evaluating the validity of the different hypotheses concerning the evolutionary history of this species. Two major lineages of T. infestans, an Andean and non-Andean, are suggested.

  2. LDC nuclear power: Argentina

    International Nuclear Information System (INIS)

    Tweedale, D.L.

    1982-01-01

    Argentina's 31-year-old nuclear research and power program makes it a Third World leader and the preeminent Latin American country. Easily accessible uranium fuels the heavy water reactor, Atucha I, which provides 10% of the country's electric power. Atucha II and III are under construction. Several domestic and international factors combined to make Argentina's program succeed, but achieving fuel-cycle independence and the capacity to divert fissionable material to military uses is a cause for some concern. 60 references

  3. DECONSTRUCCIÓN DE LA ERÓTICA DE LA VEJEZ EN OCCIDENTE

    Directory of Open Access Journals (Sweden)

    Ricardo Iacub

    2010-02-01

    Full Text Available Este artículo deconstruye la erótica contemporánea en el envejecimiento focalizando en las diversas modalidades en que esta temática fue narrada en ciertos pueblos, momentos históricos y religiones de Occidente. Se desarrollan las narrativas producidas en el pueblo judío, la antigüedad griega y romana, los padres de la Iglesia, la modernidad y la posmodernidad. La investigación se inscribe dentro de los estudios culturales y contiene búsquedas históricas acerca de los significados atribuidos a esta temática utilizando fuentes directas e indirectas. Los resultados presentan la erótica en la vejez con significados diversos y dinámicos en la historia, hallando continuidades y discontinuidades narrativas. Palabras claves: Erótica, Vejez, Narrativas, Deconstrucción, Cultura Occidental.

  4. CAMBIOS TEMPORALES DE LA LLUVIA EN EL OCCIDENTE DE LA ISLA DE CUBA

    Directory of Open Access Journals (Sweden)

    Teresa López Deulofeu

    2005-01-01

    Full Text Available El presente trabajo surge de la necesidad de conocer en el tiempo, el comportamiento de la lluvia, asi como también en su distribución espacial en el occidente de Cuba. Se analiza la estacionalidad, tendencia, variabilidad y ciclícidad. Se comprobó que por lo menos en el período 1961-1993, no existe diferencia de las estaciones lluviosa y poco lluviosa. Se encontró que la ruptura de la tendencia ocurrió fuertemente en 1975, y una menor en 1973. Se han manifestado 4 ciclos aperíodicos. Se manifiesta el mismo comportamiento de la lluvia en todo el occidente de Cuba.

  5. Nueva especie de rana (Atelopus de Los Farallones de Cali, Cordillera Occidental de Colombia

    Directory of Open Access Journals (Sweden)

    Kattan Gustavo

    1986-06-01

    Full Text Available Durante la realización de colecciones herpetológicas en el Departamento del Valle del Cauca, fue encontrada una especie no descrita de Atelopus (Anura: Bufonidae en los farallones de Cali, a 2600 m de altura. Esta es la primera especie en este género que se encuentra a elevaciones superiores a 2000 m en la Cordillera Occidental. Se conocen varias especies de Atelopus en las Cordilleras Central y Oriental de Colombia y en los Andes ecuatorianos (COCHRAN y GOIN 1970; PETERS 1973; RIVERO 1963 y probablemente futuras colecciones herpetológicas continuaran revelando nuevas especies en las partes altas de la Cordillera Occidental.

  6. Photometric Assessment of Night Sky Quality over Chaco Culture National Historical Park

    Science.gov (United States)

    Hung, Li-Wei; Duriscoe, Dan M.; White, Jeremy M.; Meadows, Bob; Anderson, Sharolyn J.

    2018-06-01

    The US National Park Service (NPS) characterizes night sky conditions over Chaco Culture National Historical Park using measurements in the park and satellite data. The park is located near the geographic center of the San Juan Basin of northwestern New Mexico and the adjacent Four Corners state. In the park, we capture a series of night sky images in V-band using our mobile camera system on nine nights from 2001 to 2016 at four sites. We perform absolute photometric calibration and determine the image placement to obtain multiple 45-million-pixel mosaic images of the entire night sky. We also model the regional night sky conditions in and around the park based on 2016 VIIRS satellite data. The average zenith brightness is 21.5 mag/arcsec2, and the whole sky is only ~16% brighter than the natural conditions. The faintest stars visible to naked eyes have magnitude of approximately 7.0, reaching the sensitivity limit of human eyes. The main impacts to Chaco’s night sky quality are the light domes from Albuquerque, Rio Rancho, Farmington, Bloomfield, Gallup, Santa Fe, Grants, and Crown Point. A few of these light domes exceed the natural brightness of the Milky Way. Additionally, glare sources from oil and gas development sites are visible along the north and east horizons. Overall, the night sky quality at Chaco Culture National Historical Park is very good. The park preserves to a large extent the natural illumination cycles, providing a refuge for crepuscular and nocturnal species. During clear and dark nights, visitors have an opportunity to see the Milky Way from nearly horizon to horizon, complete constellations, and faint astronomical objects and natural sources of light such as the Andromeda Galaxy, zodiacal light, and airglow.

  7. Experimental evidence of biological interactions among different isolates of Trypanosoma cruzi from the Chaco Region.

    Directory of Open Access Journals (Sweden)

    Paula G Ragone

    Full Text Available Many infectious diseases arise from co-infections or re-infections with more than one genotype of the same pathogen. These mixed infections could alter host fitness, the severity of symptoms, success in pathogen transmission and the epidemiology of the disease. Trypanosoma cruzi, the etiological agent of Chagas disease, exhibits a high biological variability often correlated with its genetic diversity. Here, we developed an experimental approach in order to evaluate biological interaction between three T. cruzi isolates belonging to different Discrete Typing Units (DTUs TcIII, TcV and TcVI. These isolates were obtained from a restricted geographical area in the Chaco Region. Different mixed infections involving combinations of two isolates (TcIII + TcV, TcIII + TcVI and TcV + TcVI were studied in a mouse model. The parameters evaluated were number of parasites circulating in peripheral blood, histopathology and genetic characterization of each DTU in different tissues by DNA hybridization probes. We found a predominance of TcVI isolate in blood and tissues respect to TcIII and TcV; and a decrease of the inflammatory response in heart when the damage of mice infected with TcVI and TcIII + TcVI mixture were compared. In addition, simultaneous presence of two isolates in the same tissue was not detected. Our results show that biological interactions between isolates with different biological behaviors lead to changes in their biological properties. The occurrence of interactions among different genotypes of T. cruzi observed in our mouse model suggests that these phenomena could also occur in natural cycles in the Chaco Region.

  8. Impact Assessment of the Fish for Every Family Project in Occidental Mindoro, Philippines

    Directory of Open Access Journals (Sweden)

    Lei A. Pangilinan

    2017-11-01

    Full Text Available Fish for Every Family Project (FFEFP is one of the initiatives of Plan International that responds to the issue of malnutrition among Filipino children. FFEFP aims to promote and develop backyard tilapia fish farming in Isabela, Mindoro Occidental, Southern Leyte, and Western Samar, Philippines. These are the areas in the country where malnutrition is commonly observed. This study explores the adoption to The Fish for Every Family Project (FFEFP, and assesses its impacts in different levels. This impact assessment of FFEFP was conducted in Occidental Mindoro. The researchers used purposive sampling to touch base directly with a representative sample of the FFEFP beneficiaries in three out of four municipalities in Mindoro Occidental. The data were gathered through focus group discussions with the key officials in the area and some tilapia cage culture technology adopters. Key informant interviews (KIIs of all project stakeholders were also conducted as well. In order to validate the information gathered from the respondents and to see the fish farms used, field visits and ocular inspection were made. The study revealed that the FFEFP has various impacts to the beneficiaries, adopters, and replicators of tilapia. The impacts occurred at three levels: individual, family, and community. It was found out that the project was able to provide self-satisfaction among the beneficiaries and build stronger relationships among the members of the family and of the community.

  9. Conflict in the National Territory of Chaco: Agricultural Cooperatives in front of the Statute of the Rural Labourer Conflicto en el Territorio Nacional del Chaco: Las Cooperativas agrícolas frente al Estatuto del Peón Rural

    Directory of Open Access Journals (Sweden)

    Leandro Moglia

    2011-01-01

    Full Text Available The arrival to the presidency of Juan Peron in 1946, meant for the Argentine agro continuity of some policies developed before the Revolution of 1943 and deepened by it. A decision with such production and marketing joined those aimed at improving the rural working class, so far neglected area. The application of the Statute of the Rural Pawn (1947 in a territory of frontier production and labor as the Chaco, in a local context unfavorable woke one of the most turbulent clashes between the agricultural cooperatives-organizations on behalf of its partners, and the Administration responsible for local implementation. The aim of this work to study, from the documentation produced by cooperatives and local print media, the conflict in the Chaco awoke when implementing the Statute of the PawnLa llegada a la presidencia de Juan Perón en 1946, significó para el agro argentino la continuidad de algunas políticas desarrolladas antes de la Revolución de 1943 y profundizadas por ésta. A esas decisiones de carácter productivo y de comercialización se sumaron aquellas orientadas a la mejora de la clase trabajadora rural, sector descuidado hasta el momento. La aplicación del Estatuto del Peón Rural (1947 en un territorio de frontera productiva y ocupacional como el Chaco, en un contexto local desfavorable, despertó uno de los más agitados enfrentamientos entre las entidades Cooperativas agrícolas-en representación de sus asociados- y la Administración local encargada de su aplicación. Es objetivo de este trabajo estudiar, desde la documentación que produjeron las cooperativas y los medios gráficos locales, el conflicto que se despertó en el Chaco al momento de implementarse el Estatuto del Peón.

  10. Why do gatherers no longer gather? Stigmatizing processes of consumption of wild edible plants among Chorote Indians from Argentine Chaco.

    Directory of Open Access Journals (Sweden)

    Gustavo Fabián Scarpa

    2017-08-01

    Full Text Available The article analyzes cultural change related to the consumption of wild edible plants among Chorote Indians from Argentine Chaco, especially the process of construction of prejudices regarding such practices, expressed in the form of symbols of social or religious discredit which has led to their concomitant stigmatization and contempt. The influence of hegemonic agents in the conceptualization of wild edible plants and their utilization practices is here identified and analyzed from observational, exegetical and interpretative points of view. The article specifically discusses if the abandonment of wild edible plant consumption is due to reasons  linked to environmental determinism, to the mere acquisition of new cultural practices, or to socio-religious stigmatization of old food rules among Chorote Indians from Argentine Chaco.

  11. Helosis (Balanophoraceae en Argentina Helosis (Balanophoraceae in Argentina

    Directory of Open Access Journals (Sweden)

    José Luis Fontana

    2006-07-01

    Full Text Available Se cita por primera vez para Argentina Helosis cayennensis (Swartz Sprengel var. cayennensis en base a colecciones hechas por los autores en la Isla argentina de Apipé Grande, Ituzaingó, provincia de Corrientes. Se describe e ilustra la especie, el desarrollo de la planta y su estado de conservación. Esta cita de Helosis corresponde a un género nuevo para la flora argentina.Helosis cayennensis var. cayennensis is reported for the first time for Argentina. The species is described and ilustrated. Developement and ecology are also given. Helosis is also a new generic record for Argentina.

  12. Como nasceu e como morreu o "marxismo ocidental" How the "Occidental Marxism" was born and died

    Directory of Open Access Journals (Sweden)

    Domenico Losurdo

    2011-04-01

    Full Text Available Por muito tempo o “marxismo ocidental” celebrou a sua superioridade em relação ao marxismo dos países que se remetiam ao socialismo e que estavam todos situados no Oriente. Em decorrência dessa atitude arrogante, o marxismo ocidental nunca se empenhou seriamente em repensar a teoria de Marx à luz de um balanço histórico concreto: qual era o papel do Estado e da nação nesses países e no “campo socialista”? Como promover a democracia e os direitos humanos e como estimular o desenvolvimento das forças produtivas e o bem-estar das massas numa situação caracterizada pelo bloqueio capitalista? Ao invés de pôr-se essas questões difíceis, o marxismo ocidental preferiu abandonar-se à cômoda atitude autoconsolatória de quem cultiva em particular as suas utopias e rejeita, como uma contaminação, o contato com a realidade e a reflexão sobre a realidade. Disso derivou uma progressiva capitulação à ideologia dominante. Por fim, a autocelebração do marxismo ocidental desembocou na sua autodissolução. Palavras-chave: Marxismo ocidental. Campo socialista. Falta de balanço histórico. Autodissolução. For a long time the “occidental Marxism” celebrated its superiority over the Marxism established in countries located in the Orient, to where the socialism was related. Due to this arrogante attitude, the occidental Marxism has never endeavored to rethink Marx’s theory upon a concrete historical summary: what was the role of the State and Nation in these countries and in the “socialist field”? How to promote the democracy and the human rights and how to estimulate the development of the productive forces and people’s welfare within a situation featured by the capitalist interdiction? Instead of opposing to those difficult questions, the occidental Marxism preferred to remain at a comfortable and self-consolating attitude, cultivating their particular utopias and rejecting, as a contamination, the contact to and

  13. What happened in the South American Gran Chaco? Diversification of the endemic frog genus Lepidobatrachus Budgett, 1899 (Anura: Ceratophryidae).

    Science.gov (United States)

    Brusquetti, Francisco; Netto, Flavia; Baldo, Diego; Haddad, Célio F B

    2018-06-01

    The Chaco is one the most neglected and least studied regions of the world. This highly-seasonal semiarid biome is an extensive continuous plain without any geographic barrier, and in spite of its high species diversity, the events and processes responsible have never been assessed. Miocene marine introgressions and Pleistocene glaciations have been mentioned as putative drivers of diversification for some groups of vertebrates in adjacent biomes of southern South America. Here we used multilocus data (one mitochondrial and six nuclear loci) from the three species of the endemic frog genus Lepidobatrachus (Lepidobatrachus asper, Lepidobatrachus laevis, and Lepidobatrachus llanensis) to determine if any of the historical events suggested as drivers of vertebrate diversification in southern South America are related to the diversification of the genus and if the Chaco is indeed a biome without barriers. Using fossil calibration in a coalescent framework we estimated that the genus diversified in the second half of the Miocene, coinciding with marine introgressions. Genetic patterns and historical demography suggest an important role of old archs and cratons as refuges during floods. In one species of the genus, L. llanensis, genetic structure reveals some breaks along the landscape, the main one of which corresponds to an area of the central Chaco that may act as a climatic barrier. Additionally, we found differential effects of the main Chacoan rivers on species of Lepidobatrachus that could be related to the time of persistence of populations in the areas influenced by these rivers. Copyright © 2018 Elsevier Inc. All rights reserved.

  14. Overcoming language and cultural barriers: a graphical communication tool to perform a parasitological screening in two vulnerable populations from Argentina.

    Science.gov (United States)

    Buyayisqui, María Pía; Bordoni, Noemí; Garbossa, Graciela

    2013-01-01

    This is an exploratory study of the application of a support tool for the detection of asymptomatic subjects carrying enteric parasites in two vulnerable populations in Argentina: a shantytown in the city of Buenos Aires and a rural Wichí indigenous community in the province of Chaco. The ethnic and cultural diversity, high illiteracy rate, and language barriers called for the development of an auxiliary resource to explain stool sample collection procedures. In individual interviews with each family, the authors used two instructional guidance leaflets in comic strip format depicting the procedures. They evaluated the acceptance of the graphical communication tool on the basis of the number of retrieved samples. Percentages of respondent families were 72.2% and 66.7%, respectively. Definitive validation of these instruments would allow their use in community studies, community service learning experiences, and research on aboriginal communities that would otherwise be excluded from studies on health status.

  15. Evaluation of exposure to fluoride in child population of North Argentina.

    Science.gov (United States)

    Rocha, René Antonio; Calatayud, Marta; Devesa, Vicenta; Vélez, Dinoraz

    2017-09-01

    Fluoride is an important element for humans. It inhibits initiation and progression of dental caries and stimulates bone formation. However, excessive intake may lead to the appearance of dental and/or skeletal fluorosis and a decrease in intellectual coefficient in child populations. This study evaluates exposure to fluoride in the child population of Chaco province (Argentina) by analysis of drinking water, food and its bioaccessible fraction (quantity of fluoride solubilised by gastrointestinal digestion and available for intestinal absorption) and urine as a biomarker of internal dose. The concentration of fluoride in drinking water varied between 0.050 and 4.6 mg L -1 , and 80% of the samples exceeded the WHO drinking-water guideline value (1.5 mg L -1 ). Fluoride concentrations in food ranged between 0.80 and 3.0 mg kg -1 fresh weight (fw), being lower in bioaccessible fraction (0.43-1.9 mg kg -1 , fw). On the basis of the consumption data declared for the young child population, fluoride intake varies between 4.1 and 6.5 mg day -1 , greater than the level recommended for this age group. Moreover, in some cases, concentrations of fluoride found in urine (0.62-8.9 mg L -1 ) exceeded those reported in areas with declared fluorosis. All data obtained show the worrying situation of child population in this area of Argentina.

  16. Economy Profile of Argentina

    OpenAIRE

    World Bank Group

    2017-01-01

    Doing Business 2018 is the 15th in a series of annual reports investigating the regulations that enhance business activity and those that constrain it. This economy profile presents the Doing Business indicators for Argentina. Doing Business presents quantitative indicators on business regulation and the protection of property rights that can be compared across 190 economies; for 2018 Arge...

  17. Radiation vulcanization in Argentina

    International Nuclear Information System (INIS)

    Ferenaz, Guillermo W.; Smolko, Eduardo E.

    1999-01-01

    The possibilities of using in Argentina the radiation process to vulcanize natural latex are analyzed. Experimental studies to define the irradiation conditions have been carried out and the preliminary elaboration of an irradiation device that includes the chemical reactor has been started. (author)

  18. El IDRC en Argentina

    International Development Research Centre (IDRC) Digital Library (Canada)

    comercio capaces de sostener el crecimiento y reducir la pobreza. ... Rosario, en Argentina, se ha convertido en un ejemplo internacional para la agricultura urbana gracias a la ... para evaluar los riesgos y beneficios de esta tecnología para ...

  19. La gestion de las aguas subterraneas en el acuifero Mancha Occidental

    OpenAIRE

    Iglesias, Eva

    2002-01-01

    RESUMEN: En este artículo se aborda la problemática que plantea la recuperación del acuífero Mancha Occidental en el que existe una importante externalidad ambiental que se deriva de la relación entre las reservas de agua existentes en el acuífero y los humedales Tablas de Daimiel. Para ello, se desarrollan varios modelos de programación matemática que permiten evaluar distintos instrumentos de gestión para guiar la recuperación del acuífero a un estado sostenible. Los resultados obtenidos pe...

  20. Reflexiones sobre el silencio y el lenguaje a la luz de oriente y occidente

    OpenAIRE

    Román López, María Teresa

    2012-01-01

    Nuestra intención es apuntar hacia un marco de reflexión sobre el papel del silencio y el lenguaje a la luz del pensamiento de Oriente y Occidente. La «Comunidad del lenguaje» se interpone siempre entre nosotros y la «realidad», glosándola, desarrollando todo tipo de filigranas semánticas, filtrándola y modelándola a la medida de las necesidades de una humanidad desfondada y perdida en sus preguntas y respuestas. Nuestra experiencia del mundo y de nosotros mismos es...

  1. Extensive and every day risk in the Bolivian Chaco: Sources of crisis and disaster

    Directory of Open Access Journals (Sweden)

    Lilian R. Reyes Pando

    2012-05-01

    Full Text Available Disaster risk comprises a continuum, ranging from primary-structural (pre-impact, through contingent (resulting from impact to future or reconstructed risk (resulting from inadequate recovery or reconstruction practices. At the same time these categories are many times constructed on the basis of existing chronic risk. These different categories are employed to demonstrate how the 2009-2011 disasters associated with the drought and freezing that affected the Bolivian Chaco region evolved and were perpetuated in cyclical manner. Additionally, the article demonstrates how preconceived notions of causal factors and post impact needs analysis, associated with large scale, rapid onset hazards, belies an understanding of the needs in slow onset and lifestyle based extensive risk crises. It also reveals how any attempt to deal with the successive, apparently sequenced categories of risk, using independent mechanisms and institutional frameworks is doomed to failure due to the relations that exist between primary, contingent and future risk and the disaster risk management and development mechanisms required to reduce them.

  2. Land-use policies and corporate investments in agriculture in the Gran Chaco and Chiquitano

    Science.gov (United States)

    le Polain de Waroux, Yann; Garrett, Rachael D.; Heilmayr, Robert; Lambin, Eric F.

    2016-01-01

    Growing demand for agricultural commodities is causing the expansion of agricultural frontiers onto native vegetation worldwide. Agribusiness companies linking these frontiers to distant spaces of consumption through global commodity chains increasingly make zero-deforestation pledges. However, production and land conversion are often carried out by less-visible local and regional actors that are mobile and responsive to new agricultural expansion opportunities and legal constraints on land use. With more stringent deforestation regulations in some countries, we ask whether their movements are determined partly by differences in land-use policies, resulting in “deforestation havens.” We analyze the determinants of investment decisions by agricultural companies in the Gran Chaco and Chiquitano, a region that has become the new deforestation “hot spot” in South America. We test whether companies seek out less-regulated forest areas for new agricultural investments. Based on interviews with 82 companies totaling 2.5 Mha of properties, we show that, in addition to proximity to current investments and the availability of cheap forestland, lower deforestation regulations attract investments by companies that tend to clear more forest, mostly cattle ranching operations, and that lower enforcement attracts all companies. Avoiding deforestation leakage requires harmonizing deforestation regulations across regions and commodities and promoting sustainable intensification in cattle ranching. PMID:27035995

  3. Chaco: crecimiento económico y la Ley de Okun

    Directory of Open Access Journals (Sweden)

    Susana Gusinsky

    2011-12-01

    Full Text Available El presente trabajo se propuso, como objetivos principales, describir la senda de crecimiento del PGB de la provincia del Chaco junto con sus componentes, sondear la evolución de la tasa de desempleo y la tasa de empleo del Gran Resistencia y relacionar el crecimiento del producto con el comportamiento de la tasa de desempleo, especialmente durante la última década. Para ello se analiza, en primer lugar, la evolución del PGB provincial y del mercado laboral del Gran Resistencia. En segundo lugar, se estudia la evolución de las tasas de desempleo, empleo y actividad. El trabajo se completa a través de un análisis econométrico de la relación tasa de crecimiento/tasa de desempleo, utilizando la “Ley de Okun”, a los fines de observar la incidencia que tiene el crecimiento de la actividad económica sobre el desempleo.

  4. Land-use policies and corporate investments in agriculture in the Gran Chaco and Chiquitano.

    Science.gov (United States)

    le Polain de Waroux, Yann; Garrett, Rachael D; Heilmayr, Robert; Lambin, Eric F

    2016-04-12

    Growing demand for agricultural commodities is causing the expansion of agricultural frontiers onto native vegetation worldwide. Agribusiness companies linking these frontiers to distant spaces of consumption through global commodity chains increasingly make zero-deforestation pledges. However, production and land conversion are often carried out by less-visible local and regional actors that are mobile and responsive to new agricultural expansion opportunities and legal constraints on land use. With more stringent deforestation regulations in some countries, we ask whether their movements are determined partly by differences in land-use policies, resulting in "deforestation havens." We analyze the determinants of investment decisions by agricultural companies in the Gran Chaco and Chiquitano, a region that has become the new deforestation "hot spot" in South America. We test whether companies seek out less-regulated forest areas for new agricultural investments. Based on interviews with 82 companies totaling 2.5 Mha of properties, we show that, in addition to proximity to current investments and the availability of cheap forestland, lower deforestation regulations attract investments by companies that tend to clear more forest, mostly cattle ranching operations, and that lower enforcement attracts all companies. Avoiding deforestation leakage requires harmonizing deforestation regulations across regions and commodities and promoting sustainable intensification in cattle ranching.

  5. Baixa do Noroeste Argentino e Baixa do Chaco: caracterísitcas, diferenças e semelhanças The Northewestern Argentinean Low and The Chaco Low: their characteristics, differences and similarities

    Directory of Open Access Journals (Sweden)

    Marcelo Enrique Seluchi

    2012-03-01

    Full Text Available A Baixa do Chaco e a Baixa do Noroeste Argentino são frequentemente confundidas ou tratadas como um único sistema. Isso se deve a vários fatores: o pouco conhecimento que se tem sobre elas, especialmente sobre a Baixa do Chaco, a baixa resolução das reanálises globais que as mostram como um único sistema e a relativamente escassa cobertura de dados sobre a região que ocupam. Este trabalho tenta contribuir para o melhor entendimento das diferenças e semelhanças entre ambos os sistemas, analisando algumas características dinâmicas e termodinâmicas da região em que elas atuam, com a finalidade de aprofundar seu conhecimento e de possibilitar a sua melhor identificação e diferenciação. O estudo utiliza as reanálises do modelo regional Eta/CPTEC do período (2000-2004 e considera os meses de verão, período no qual as duas baixas estão ativas. Os resultados mostraram que a Baixa do Noroeste Argentino está mais relacionada com a atividade transiente, o que pode ser comprovado através da influência do jato subtropical e da variabilidade temporal de algumas variáveis, como a pressão e a temperatura potencial equivalente. A Baixa do Chaco se desenvolve numa atmosfera mais instável do ponto de vista termodinâmico, porém menos afetada pela dinâmica das latitudes médias.The Chaco Low and the Northwestern Argentinean Low are frequently confounded or treated as a single system, due to our limited knowledge about them (especially concerning the Chaco Low, the low resolution of global analyses -that show them as a single low pressure system-, and the relatively poor data coverage over the region where they are usually located. This article aims to contribute to a better understanding of the differences and similarities between them, as well as to analyze the atmospheric dynamical and thermo-dynamical conditions where they evolve. It is considered that this study will aid to a better recognition of both systems. With this purpose

  6. Agresividad y resolución de problemas interpersonales en alumnado de cultura occidental y alumnado de cultura amazigh

    OpenAIRE

    Garrido Cerón, Rafael de Fátima

    2015-01-01

    En la presente tesis se analiza la relación que guardan entre sí variables como: agresividad y la resolución de problemas interpersonales, con variables culturales (cultura amazigh, cultura occidental), personales (sexo) y socioeconómicas (estatus socioeconómico), y con impulsividad en una muestra de estudiantes de cultura occidental y estudiantes de cultura amazigh escolarizados en tercer ciclo de Educación Primaria. Desarrollo teórico: Se empieza realizando una aproximación a la cultu...

  7. Argentina set for privatization

    International Nuclear Information System (INIS)

    Chynoweth, E.

    1992-01-01

    Buyers are lining up for Argentina's two big state-controlled petrochemical groups, Buenos Aires-based Petroquimica General Mosconi (PGM) and Petroquimica Bahia Blance (PBB). However, feedstock supply contracts with government-owned oil group Yacientos Petroliferos Fiscales (YPG) and gas group Gas del Estado hold the key to both sales. Shell Compania Argentina Petroleo SA (CAPSA), Perez Companc, and Global Petroleum have already bought PGM tender documentation. Shell says it will bid for PGM if the feedstock contract with YPF is acceptable. In addition to price and volume, Shell says the length is critical; it wants a 15-year deal, but would settle for 11. YPF initially sought a five-year contract. PGM, which produces 300,000 m.t./year of aromatics, plus oxo alcohols, methanol, and methyl tert-butyl ether, has sales of $150 million/year

  8. Crisis cambiaria en Argentina

    OpenAIRE

    Féliz, Mariano

    2009-01-01

    El análisis de la articulación entre el proceso de valorización exitosa de capital y la tendencia a la desvalorización de las mercancías se aplica a una de las manifestaciones de la crisis argentina: la devaluación del peso. Se estudia la relación entre la determinación del tipo de cambio y la valorización del capital. Se discuten las tendencias concretas de la economía argentina en la década de 1990 y se muestra cómo la devaluación de 2001-2002 fue producto necesario del propio proceso de va...

  9. Conflict in the National Territory of Chaco: Agricultural Cooperatives in front of the Statute of the Rural Labourer Conflicto en el Territorio Nacional del Chaco: Las Cooperativas agrícolas frente al Estatuto del Peón Rural

    OpenAIRE

    Leandro Moglia

    2011-01-01

    The arrival to the presidency of Juan Peron in 1946, meant for the Argentine agro continuity of some policies developed before the Revolution of 1943 and deepened by it. A decision with such production and marketing joined those aimed at improving the rural working class, so far neglected area. The application of the Statute of the Rural Pawn (1947) in a territory of frontier production and labor as the Chaco, in a local context unfavorable woke one of the most turbulent clashes between the a...

  10. Fruit fly eradication: Argentina

    International Nuclear Information System (INIS)

    2003-01-01

    Fruit exports account for 9% of Argentina's total agricultural exports and generate annually close to $450 million. This could be increased but for fruit flies that cause damage equivalent to 15% to 20% of present production value of fruit and also deny export access to countries imposing quarantine barriers. The Department of Technical Co-operation is sponsoring a programme, with technical support from the Joint FAO/IAEA Division, to eradicate the Mediterranean fruit fly using the Sterile Insect Technique (SIT). (IAEA)

  11. Argentina [Country report

    International Nuclear Information System (INIS)

    Ferreyra, R.

    2005-01-01

    The airborne geophysical surveys developed in Argentina are described. They have got more than 500.000 km 2 acquiring data for U, Th, K and total background activity. Other types of published data are also mentioned (satellite imagery, seismic hazard, climate, soil distributions, etc.). The availability of maps with the abundances of elements analyzed at the country and also at laboratories from Canada is described, as well as data of analysis of several elements at two study areas proposed at the outset of the project. The availability of process rate data and epidemiological data is also explained. Argentina intended fully to participate in the CRP at the outset of the project. Due, however, to external resource constraints imposed on the participating organization (Comision Nacional de Energia Atomica, CNEA), the level of participation had to be significantly reduced. Nonetheless, in the first period of the CRP, Argentina undertook to collate existing geological and geochemical information within the country, and began to define potential areas for site specific natural systems safety indicator studies. (author)

  12. de la sociedad argentina

    Directory of Open Access Journals (Sweden)

    Diego Galeano

    2007-01-01

    Full Text Available Este artículo trata sobre un período de la historia argentina en el cual la "mirada médica", a través de un grupo de prestigiosos intelectuales, se convirtió en una clave de interpretación de la sociedad argentina. El análisis gira en torno a la obra de uno de los médicos higienistas más influyentes, José María Ramos Mejía, deteniéndose especialmente en su libro más famoso: Las multitudes argentinas (1899. La hipótesis principal que recorre el texto es la siguiente: la medicalización de la sociedad, acentuada luego de las epidemias de cólera y fiebre amarilla de mediados del siglo XIX, ofreció a las elites públicas la posibilidad de construir dominios legítimos de intervención estatal. Intromisiones del Estado en la vida privada que, además de ser algo resistidas por la población, entraban en tensión con los principios teóricos del liberalismo que los propios miembros de la elite defendían.

  13. Differences in production, carbon stocks and biodiversity outcomes of land tenure regimes in the Argentine Dry Chaco

    Science.gov (United States)

    Marinaro, Sofía; Grau, H. Ricardo; Gasparri, Néstor Ignacio; Kuemmerle, Tobias; Baumann, Matthias

    2017-04-01

    Rising global demand for agricultural products results in agricultural expansion and intensification, with substantial environmental trade-offs. The South American Dry Chaco contains some of the fastest expanding agricultural frontiers worldwide, and includes diverse forms of land management, mainly associated with different land tenure regimes; which in turn are segregated along environmental gradients (mostly rainfall). Yet, how these regimes impact the environment and how trade-offs between production and environmental outcomes varies remains poorly understood. Here, we assessed how biodiversity, biomass stocks, and agricultural production, measured in meat-equivalents, differ among land tenure regimes in the Dry Chaco. We calculated a land-use outcome index (LUO) that combines indices comparing actual vs. potential values of ‘preservation of biodiversity’ (PI), ‘standing biomass’ (BI) and ‘meat production’ (MI). We found land-use outcomes to vary substantially among land-tenure regimes. Protected areas showed a biodiversity index of 0.75, similar to that of large and medium-sized farms (0.72 in both farming systems), and higher than in the other tenure regimes. Biomass index was similar among land tenure regimes, whereas we found the highest median meat production index on indigenous lands (MI = 0.35). Land-use outcomes, however, varied more across different environmental conditions than across land tenure regimes. Our results suggest that in the Argentine Dry Chaco, there is no single land tenure regime that better minimizes the trade-offs between production and environmental outcomes. A useful approach to manage these trade-offs would be to develop geographically explicit guidelines for land-use zoning, identifying the land tenure regimes more appropriate for each zone.

  14. Reduced population variance in strontium isotope values informs domesticated turkey use at Chaco Canyon, New Mexico, USA

    Science.gov (United States)

    Grimstead, Deanna N; Reynolds, Amanda C; Hudson, Adam M; Akins, Nancy J; Betancourt, Julio L.

    2016-01-01

    Traditionally strontium isotopes (87Sr/86Sr) have been used as a sourcing tool in numerous archaeological artifact classes. The research presented here demonstrates that 87Sr/86Srbioapatite ratios also can be used at a population level to investigate the presence of domesticated animals and methods of management. The proposed methodology combines ecology, isotope geochemistry, and behavioral ecology to assess the presence and nature of turkey (Meleagris gallopavo) domestication. This case study utilizes 87Sr/86Srbioapatite ratios from teeth and bones of archaeological turkey, deer (Odocoileus sp.), lagomorph (Lepus sp. and Sylvilagus sp.), and prairie-dog (Cynomys sp.) from Chaco Canyon, New Mexico, U.S.A. (ca. A.D. 800 – 1250). Wild deer and turkey from the southwestern U.S.A. have much larger home ranges and dispersal behaviors (measured in kilometers) when compared to lagomorphs and prairie dogs (measured in meters). Hunted deer and wild turkey from archaeological contexts at Chaco Canyon are expected to have a higher variance in their 87Sr/86Srbioapatite ratios, when compared to small range taxa (lagomorphs and prairie dogs). Contrary to this expectation, 87Sr/86Srbioapatite values of turkey bones from Chacoan assemblages have a much lower variance than deer and are similar to that of smaller mammals. The sampled turkey values show variability most similar to lagomorphs and prairie dogs, suggesting the turkeys from Chaco Canyon were consuming a uniform diet and/or were constrained within a limited home range, indicating at least proto-domestication. The population approach has wide applicability for evaluating the presence and nature of domestication when combined with paleoecology and behavioral ecology in a variety of animals and environments.

  15. A Microsatellite-Based Analysis of House Infestation With Triatoma Infestans (Hemiptera: Reduviidae) After Insecticide Spraying in the Argentine Chaco.

    Science.gov (United States)

    Piccinali, Romina V; Gaunt, Michael W; Gürtler, Ricardo E

    2018-05-04

    Prevention of vector-borne transmission of Chagas disease mainly relies on residual insecticide spraying. Despite significant success at a regional scale, house infestation with Triatoma infestans (Klug) (Hemiptera: Reduviidae) still persists in the Gran Chaco ecoregion. One key aspect is the identification of the sources of reinfestant triatomines. After detecting fine-scale genetic structure in two rural villages of Pampa del Indio, Argentine Chaco, we tested hypotheses on the putative origins of the triatomines collected at 4, 8, and 12 mo after insecticide house spraying. We genotyped 10 microsatellite loci in 262 baseline and 83 postspraying triatomines from different houses. Genetic variability was similar between baseline and postspraying populations, but 13 low-frequency alleles were not detected at postspraying. FSTs were not significant between insects collected before and after insecticide spraying at the same house in all but one case, and they clustered together in a neighbor-joining tree. A clustering algorithm detected seven genetic groups, four of them mainly composed of baseline and postspraying insects from the same house. Assignment tests suggested multiple putative sources (including the house of collection) for most postspraying insects but excluded a house located more than 9 km from the study area. The origin of three triatomines was attributed to immigration from other unaccounted sources. Our study is compatible with the hypothesis that house reinfestations in the Argentine Chaco are mostly related to residual foci (i.e., survival of insects within the same community), in agreement with field observations, spatial analysis, and morphometric studies previously published.

  16. Conflict in the National Territory of Chaco. Agricultural Cooperatives in front of the Statute of the Rural Labourer

    OpenAIRE

    Moglia, Leandro Eduardo

    2016-01-01

    La llegada a la presidencia de Juan Perón en 1946, significó para el agro argentino la continuidad de algunas políticas desarrolladas antes de la Revolución de 1943 y profundizadas por ésta. A esas decisiones de carácter productivo y de comercialización se sumaron aquellas orientadas a la mejora de la clase trabajadora rural, sector descuidado hasta el momento. La aplicación del Estatuto del Peón Rural (1947) en un territorio de frontera productiva y ocupacional como el Chaco, en un contexto ...

  17. Historia y conversión: el evangelio entre los mocoví del Chaco Austral História e Conversão: O Evangelio Entre Os Mocoví Do Sudoeste Da Estado Do Chaco History and Conversion: the Evangelio Among The Mocoví of Southwest Chaco

    Directory of Open Access Journals (Sweden)

    Agustina Altman

    2011-12-01

    Full Text Available A fines de la década de 1970 el movimiento del evangelio comenzó a ocupar una posición dominante entre las comunidades mocoví del Chaco y, posteriormente, las de Santa Fe. Nuestro trabajo se propone reconstruir el proceso histórico de la conformación del campo evangelio entre los mocoví del suroeste de la provincia del Chaco. Para una mejor comprensión de los mecanismos que han intervenido incorporaremos a nuestro análisis las modalidades particulares que ha adoptado entre este grupo aborigen la conversión al evangelio. A partir del análisis de los modelos nativos podemos observar que los mocoví despliegan, en diversos ámbitos, una concepción contextual y estratégica de la pertenencia. Esta misma lógica, que permite jugar con la ambigüedad simbólica, permea las ideas sobre "estar en el evangelio" o salir del mismo.No final dos anos 1970, o movimento do Evangelho começou a ocupar uma posição dominante entre as comunidades mocoví do Chaco e, posteriormente, as de Santa Fe. Este trabalho tem como objetivo reconstruir o processo histórico da formação do campo evangelho entre os mocoví do sudoeste da estado do Chaco. Para uma melhor compreensão dos mecanismos que foram envolvidos neste processo, incorporaremos à nossa análise as modalidades específicas dos processos de conversão ao Evangelho que o grupo nativo vem adotando. A partir da análise dos modelos nativos, podemos observar que os Mocoví têm, em diferentes âmbitos, uma concepção contextual e estratégica da propriedade e que, a própria lógica que torna possível a existência de uma ambiguidade simbólica é aquela que permeia as ideias de "estar no evangelho" ou de sair do mesmo.In the late 70's a movement known as Evangelio began to gain relevance among Mocoví communities, first in the province of Chaco and later among communities located in Santa Fe. Our research aims to reconstruct the historical conformation of the Evangelio field among the Mocov

  18. Argentina: a mature urbanization pattern.

    Science.gov (United States)

    Rofman, A B

    1985-02-01

    "This article describes the historical development of Argentina's cities, pointing out the traditional dominance of the 'centre-litoral' region and...[of] Buenos Aires. Recent trends such as the population increase in the southern region are described and demographic trends are related to economic developments. The article concludes by examining Argentina's contemporary urban patterns, including the current low rate of urbanization." excerpt

  19. Argentina's radioactive waste disposal policy

    International Nuclear Information System (INIS)

    Palacios, E.

    1986-01-01

    The Argentina policy for radioactive waste disposal from nuclear facilities is presented. The radioactive wastes are treated and disposed in confinement systems which ensure the isolation of the radionucles for an appropriate period. The safety criteria adopted by Argentina Authorities in case of the release of radioactive materials under normal conditions and in case of accidents are analysed. (M.C.K.) [pt

  20. Aridity and grazing as convergent selective forces: an experiment with an Arid Chaco bunchgrass.

    Science.gov (United States)

    Quiroga, R Emiliano; Golluscio, Rodolfo A; Blanco, Lisandro J; Fernández, Roberto J

    2010-10-01

    It has been proposed that aridity and grazing are convergent selective forces: each one selects for traits conferring resistance to both. However, this conceptual model has not yet been experimentally validated. The aim of this work was to experimentally evaluate the effect of aridity and grazing, as selective forces, on drought and grazing resistance of populations of Trichloris crinita, a native perennial forage grass of the Argentinean Arid Chaco region. We collected seeds in sites with four different combinations of aridity and grazing history (semiarid/ subhumid x heavily grazed/lightly grazed), established them in pots in a common garden, and subjected the resulting plants to different combinations of drought and defoliation. Our results agreed with the convergence model. Aridity has selected T. crinita genotypes that respond better to drought and defoliation in terms of sexual reproduction and leaf growth, and that can evade grazing due to a lower shoot: root ratio and a higher resource allocation to reserves (starch) in stem bases. Similarly, grazing has selected genotypes that respond better to drought and defoliation in terms of sexual reproduction and that can evade grazing due to a lower digestibility of leaf blades. These results allow us to extend concepts of previous models in plant adaptation to herbivory to models on plant adaptation to drought. The only variable in which we obtained a result opposite to predictions was plant height, as plants from semiarid sites were taller (and with more erect tillers) than plants from subhumid sites; we hypothesize that this result might have been a consequence of the selection exerted by the high solar radiation and soil temperatures of semiarid sites. In addition, our work allows for the prediction of the effects of dry or wet growing seasons on the performance of T. crinita plants. Our results suggest that we can rely on dry environments for selecting grazing-resistant genotypes and on high grazing pressure

  1. [Suitability of wild underexploited vegetables from the Argentine Chaco as a food resource].

    Science.gov (United States)

    Freyre, M R; Baigorria, C M; Rozycki, V R; Bernardi, C M; Charpentier, M

    2000-12-01

    The nutritional value of wild underexploited vegetable samples collected in the Argentine Chaco was investigated. Leaves from Hipochaeris sp.-, Coronopus didimus and Portulaca olearacea; fruits from Zyziphus sativa, Brumelia obtusifolia and Eugenia uniflora; and roots of Canna coccinea were included in this work; several separate samples being taken at least during two consecutive harvesting seasons. Values for moisture, protein, total lipids, crude fiber, ash, reducing and total sugars, starch, total pectins and energy are given. Mineral micronutrient contents are reported for calcium, potassium, magnesium, iron and phosphorus, as well as vitamin values (ascorbic acid and beta-carotene). Higher concentrations of macronutrients were found in the leafy vegetables (32-50 Kcal/100 g) than in commercially exploited cultivars (14-30 Kcal/100 g), as shown by an increased energy value, the protein content of Portulaca olearacea (3.74 g/100 g) being highly remarkable. Unusually high micronutrient figures were also determined in Coronopus didimus, with 172.3; 3.98, and 46.7 mg/100 g, for calcium, iron and magnesium, respectively. In general, fruits also showed higher macronutrient contents, with the exception of proteins, with less but constant values (1.58 to 1.74 g/100 g), although contributing more energy than commercial cultivars (70 to 147 Kcal/100 g). Equally important proved to be the provitamin A content in Eugenia uniflora (11.98 mg/100 g). Roots of Canna coccinea revealed the lowest energy value (34 Kcal/100 g) but surprisingly, the highest content of phosphorus of all the species under study.

  2. Análisis multivariado del dimorfismo sexual en doce etnias del Gran Chaco

    Directory of Open Access Journals (Sweden)

    Marcellino, Alberto José

    2002-01-01

    Full Text Available Se ensaya el cálculo de las distancias morfológicas para cuantificar el dimorfismo antropométrico sexual en distintas etnias aborígenes. Paralelamente se investiga: a- el grado de las diferencias entre los dimorfismos de los segmentos cefálico y postcefálico; b- los resultados con distintas combinaciones de variables, redundantes y no redundantes; c- la magnitud de participación de "forma" y "tamaño" en la distancia "total". Las distancias se calcularon mediante los algoritmos de Penrose (1954. El material utilizado fueron los datos antropométricos (inéditos correspondientes a 890 varones y 844 mujeres, obtenidos por Jehan A.Vellard, en 12 etnias del Gran Chaco Sudamericano. Las conclusiones indican: 1 la sensibilidad discriminatoria del procedimiento; 2 el segmento corporal postcefálico proporciona valores de dimorfismo notoriamente más altos que el cefálico en 11 de las 12 etnias investigadas, siendo los Ayoreo la única en que ambas distancias resultan iguales; 3 el dimorfismo sexual antropométrico está dado por el componente "tamaño" más que por el componente "forma", en proporciones cuyo rango aproximado es de 3:1 a 1:0; 4 se indica la combinación más apta para calcular el dimorfismo somatométrico "global" (cefálico+postcefálico que consta de 14 dimensiones, sin redundancia; 5 se plantea la hipótesis de que la razón dimorfismo cefálico/dimorfismo corporal postcefálico se vincularía, en relación inversa, al grado de mestización del grupo.

  3. Influence of climate and land use on historical surface fires in pine-oak forests, Sierra Madre Occidental, Mexico

    Science.gov (United States)

    Emily K. Heyerdahl; Ernesto Alvarado

    2003-01-01

    The rugged mountains of the Sierra Madre Occidental, in north-central Mexico, support a mosaic of diverse ecosystems. Of these, the high-elevation, temperate pine-oak forests are ecologically significant for their extensiveness and biodiversity. They cover nearly half the land area in the states of Durango and Chihuahua (42%), and comprise a similar percentage of the...

  4. Modernity/Coloniality and Eurocentric Education: Towards a Post-Occidental Self-Understanding of the Present

    Science.gov (United States)

    Baker, Michael

    2012-01-01

    This article sketches a post-Occidental interpretation of the historical/conceptual relationships between modern western education and European civilizational identity formation. Modern western education will be interpreted as a modern/colonial institution that emerged along with the sixteenth-century responses to the questions provoked by the…

  5. Lo que dicen del virus del Nilo Occidental (The Buzz-z-z on West Nile Virus)

    Centers for Disease Control (CDC) Podcasts

    2012-01-12

    En este podcast para niños, los chicos de Kidtastics hablan sobre el virus del Nilo Occidental y cómo protegerse de él.  Created: 1/12/2012 by Centers for Disease Control and Prevention (CDC).   Date Released: 1/30/2012.

  6. Hábitat urbano e indígenas migrantes. El caso de los qom en la ciudad de Rosario, Argentina

    Directory of Open Access Journals (Sweden)

    Silvina Corbetta

    2017-01-01

    Full Text Available En Argentina hay escaso conocimiento sobre los procesos migratorios protagonizados por indígenas y su asentamiento en centros urbanos. Por ello, esta investigación se enfoca en el pueblo qom proveniente de la Provincia de Chaco, que desde hace varios años ha migrado y se ha asentado en la Ciudad de Rosario, provincia de Santa Fe. El artículo analiza las características de sus viviendas y entornos barriales, mediante un abordaje metodológico que combina herramientas cuantitativas y cualitativas. Los resultados evidencian que la precariedad del hábitat está relacionada con graves daños a la salud, afectándose fundamentalmente a niños, niñas y jóvenes.

  7. RERTR activities in Argentina

    International Nuclear Information System (INIS)

    Adelfang, P.; Alvarez, L.; Pasqualini, E.

    2002-01-01

    The Atomic Energy Commission of Argentina has been an active participant of the RERTR program since 1978. An important milestone of the Argentinean RERTR program was the development and manufacturing at industrial scale of U 3 O 8 dispersed fuel and its subsequent application to the conversion of the RA-3 reactor core to LEU fuel. More recently, our activities were focused on the development of U 3 Si 2 fuel with a density of 4.8 gU/cm 3 and the improvement of the manufacturing process of this type of fuel. The program to qualify CNEA as a supplier U 3 Si 2 dispersed fuels is scheduled to finalize by mid 2003. To hasten this program the main research reactor of Argentina, the RA3, raised its power from 5 MW to 8 Mw in October this year. This is an intermediate step in the program to increase RA-3 power to 10 MW Currently, one of the main objectives is to develop and qualify the technology for the production of high-density LEU fuel elements using U-Mo alloy. An original way to produce U-Mo powder (the HMD process) was developed and its being upgraded to plant scale production. Another significant progress was the development of LEU targets for the production of 99 Mo, in the form of miniplates prepared with dispersed LEU U-Al x . The shipment to USA of 207 MTR spent fuels containing US origin highly enriched uranium, successfully carried out in the end of 2000, is another remarkable achievement of the Argentinean RERTR program. This activity was carried out in the framework of the United States Foreign Research Reactor Spent Nuclear Fuel Acceptance Program. The fuels were fabricated in Argentina and used in the RA-3 reactor from 1968 to 1987. The inventory of the shipped HEU spent fuel consisted in 166 standard assemblies and 41 control assemblies. (author)

  8. The dilemma of secrecy in the study of three ethnic groups from the South American Gran Chaco

    Directory of Open Access Journals (Sweden)

    Guadalupe BARÚA

    2013-12-01

    Full Text Available From an epistemological perspective, ethics poses a problem that goes beyond the issue of the stakeholders’ rationality or irrationality. Besides, it refers to the conceptual framework of knowledge, practices, and emotions allowed and forbidden within the group, as well as to their possible revelation to the researcher. This compels us to reconsider group secrets and their disclosure to the anthropologist. Undoubtedly, the resolution of this problem attempts to introduce a novel topic both concerning ethnographic fieldwork and anthropological reflection. Our examples are provided by the Wichi and Chorote Indians of the Argentine Chaco and by the Nivaclé of the Paraguayan Chaco. Secrets usually fall within the private sphere, whose meaning differs among these cultures: it may be based on a reasonable respect for intimacy, but also on the attribution of cosmological disorder that manifests the disintegration of the world. According to our experience, rubbish, body waste, corpses, or the violation of modesty as required by sexual relations attest to such disorder. Hence, all those topics associated either with Life or Death should occur not only in private but in a protected environment. We bring forward these issues by classifying secrecy into the following fields: 1 cognitive; 2 gender differences; 3 emotions; 4 offense; 5 guilt; 6 new forms of secrecy and disclosure. In this paper, the relevance of secrets is shown in unexpected situations arising from an interaction that takes place on the boundaries of standardised knowledge, and may contribute to the enhancement of anthropological knowledge while revealing unforeseen topics.

  9. The peri-urban interface and house infestation with Triatoma infestans in the Argentine Chaco: an underreported process?

    Directory of Open Access Journals (Sweden)

    Yael M Provecho

    2014-10-01

    Full Text Available Peri-urban infestations with triatomine bugs, their sources and their dynamics have rarely been investigated. Here, we corroborated the reported occurrence of Triatoma infestans in a peri-urban area and in neighbouring rural houses in Pampa del Indio, in the Argentine Chaco, and identified its putative sources using spatial analysis and demographic questionnaires. Peri-urban householders reported that 10% of their premises had triatomines, whereas T. infestans was collected by timed manual searches or community-based surveillance in only nine (3% houses. Trypanosoma cruzi-infected T. infestans and Triatoma sordida were collected indoors only in peri-urban houses and were infected with TcV and TcI, respectively. The triatomines fed on chickens, cats and humans. Peri-urban infestations were most frequent in a squatter settlement and particularly within the recently built mud houses of rural immigrants, with large-sized households, more dogs and cats and more crowding. Several of the observed infestations were most likely associated with passive bug transport from other sources and with active bug dispersal from neighbouring foci. Thus, the households in the squatter settlement were at a greater risk of bug invasion and colonisation. In sum, the incipient process of domestic colonisation and transmission, along with persistent rural-to-urban migratory flows and unplanned urbanisation, indicate the need for active vector surveillance and control actions at the peri-urban interface of the Gran Chaco.

  10. Case study - Argentina

    International Nuclear Information System (INIS)

    Diaz, E.

    1986-01-01

    Antecedents and experience of nuclear activities in Argentina; the Atomic Energy Commission (CNEA). First development and research activities. Research reactors and radioisotopes plants. Health physics and safety regulations. - Feasibility studies for the first nuclear power plant. Awarding the first plant CNA I (Atucha I). Relevant data related to the different project stages. Plant performance. - Feasibility study for the second nuclear power plant. Awarding the second plant CNE (Central Nuclear Embalse). Relevant data related to established targets. Differences compared with the first station targets. Local participation. Plant performance. (orig./GL)

  11. Primer registro del frutero pechinegro Pipreola lubomirskii (Aves, Cotingidae en la vertiente occidental de los Andes

    Directory of Open Access Journals (Sweden)

    Letty Salinas

    2013-06-01

    Full Text Available El frutero pechinegro, Pipreola lubomirskii, es un cotíngido registrado como raro y de distribución local en los Andes del Norte. Antes del presente registro sólo había sido reportado para la vertiente oriental del Perú y Ecuador, así como los Andes del sur de Colombia. El presente registro amplia su distribución a los bosques montañosos de la vertiente occidental de los Andes peruanos, habiéndose encontrado en los bosques nublados del valle del río Zaña, en el departamento de Cajamarca (6º50’-6º52’ latitud S, 79º10’-79º07’ longitud O.

  12. Industria y competitividad regional: elementos para una estrategia en el Occidente colombiano

    Directory of Open Access Journals (Sweden)

    Jorge Lotero

    1995-07-01

    Full Text Available El objetivo principal de este estudio es presentar algunos elementos para el diseño de una estrategia de competitividad de la industria manufacturera desde la perspectiva regional. Partiendo de un breve análisis de la industria en el caso de la región del occidente colombiano, se plantea que en el marco de un nuevo modelo de desarrollo económico e industrial, le compete a los entes regionales promover acciones para elevar la competitividad de las actividades económicas. Dichas acciones deben centrarse en la generación de externalidades que incrementan la productividad total de los factores en la industria.

  13. Anastylosis virtual de la puerta occidental del Castellum de Tamuda (Tetuan, Marruecos

    Directory of Open Access Journals (Sweden)

    Javier Bermejo Meléndez

    2011-04-01

    Full Text Available En el siguiente trabajo se exponen los resultados obtenidos del análisis paramental realizado en la puerta occidental del castellum de Tamuda (Tetuán, Marruecos, en el desarrollo de la campaña de investigación y puesta en valor correspondiente a 2009. Dichos resultados han permitido establecer un análisis diacrónico sobre la evolución de esta puerta del campamento romano, en el cual se han podido establecer distintas fases constructivas desde los primeros momentos fundacionales hasta el último momento de uso. Ello ha permitido, gracias a los datos obtenidos tanto por medio de sondeos estratigráficos como del estudio arqueoarquitectónico de los paramentos, la reconstrucción virtual del conjunto a lo largo de sus diferentes fases, ofreciendo una imagen visual bastante fidedigna.

  14. The energy situation in the Western region; Situacion energetica en el hemisferio occidental

    Energy Technology Data Exchange (ETDEWEB)

    Weintraub, Sidney [Center for Strategic and International Studies (CSIS) (United States)

    2007-07-15

    The Inter-American affairs have never been simple, in fact, they become even more complicated when the energy is the topic. Due to political and economic reasons as well as those provoked by the resources availability, the western countries seem to have the same differences among them. On the other hand, by means of an analysis of 11 nations, there can be found the challenges that American continent confronts with regard to the energy issue. [Spanish] Las relaciones interamericanas nunca han sido faciles. Menos aun cuando se trata de energia. Debido a razones tanto politicas y economicas como a las ocasionadas por la disponibilidad de recursos, los paises del hemisferio occidental parecen no poder reconciliar sus diferencias. Mediante el analisis de 11 naciones se aprecian los desafios que encara el continente americano en materia energetica.

  15. Patterns of Tree Species Diversity in Relation to Climatic Factors on the Sierra Madre Occidental, Mexico

    Science.gov (United States)

    Silva-Flores, Ramón; Pérez-Verdín, Gustavo; Wehenkel, Christian

    2014-01-01

    Biological diversity can be defined as variability among living organisms from all sources, including terrestrial organisms, marine and other aquatic ecosystems, and the ecological complexes which they are part of. This includes diversity within species, between species, and of ecosystems. Numerous diversity indices combine richness and evenness in a single expression, and several climate-based explanations have been proposed to explain broad-scale diversity patterns. However, climate-based water-energy dynamics appears to be an essential factor that determines patterns of diversity. The Mexican Sierra Madre Occidental occupies an area of about 29 million hectares and is located between the Neotropical and Holarctic ecozones. It shelters a high diversity of flora, including 24 different species of Pinus (ca. 22% on the whole), 54 species of Quercus (ca. 9–14%), 7 species of Arbutus (ca. 50%) and many other trees species. The objectives of this study were to model how tree species diversity is related to climatic and geographic factors and stand density and to test the Metabolic Theory, Productivity-Diversity Hypothesis, Physiological Tolerance Hypothesis, Mid-Domain Effect, and the Water-Energy Dynamic Theory on the Sierra Madre Occidental, Durango. The results supported the Productivity-Diversity Hypothesis, Physiological Tolerance Hypothesis and Water-Energy Dynamic Theory, but not the Mid-Domain Effect or Metabolic Theory. The annual aridity index was the variable most closely related to the diversity indices analyzed. Contemporary climate was found to have moderate to strong effects on the minimum, median and maximum tree species diversity. Because water-energy dynamics provided a satisfactory explanation for the patterns of minimum, median and maximum diversity, an understanding of this factor is critical to future biodiversity research. Quantile regression of the data showed that the three diversity parameters of tree species are generally higher in cold

  16. Patterns of tree species diversity in relation to climatic factors on the Sierra Madre Occidental, Mexico.

    Science.gov (United States)

    Silva-Flores, Ramón; Pérez-Verdín, Gustavo; Wehenkel, Christian

    2014-01-01

    Biological diversity can be defined as variability among living organisms from all sources, including terrestrial organisms, marine and other aquatic ecosystems, and the ecological complexes which they are part of. This includes diversity within species, between species, and of ecosystems. Numerous diversity indices combine richness and evenness in a single expression, and several climate-based explanations have been proposed to explain broad-scale diversity patterns. However, climate-based water-energy dynamics appears to be an essential factor that determines patterns of diversity. The Mexican Sierra Madre Occidental occupies an area of about 29 million hectares and is located between the Neotropical and Holarctic ecozones. It shelters a high diversity of flora, including 24 different species of Pinus (ca. 22% on the whole), 54 species of Quercus (ca. 9-14%), 7 species of Arbutus (ca. 50%) and many other trees species. The objectives of this study were to model how tree species diversity is related to climatic and geographic factors and stand density and to test the Metabolic Theory, Productivity-Diversity Hypothesis, Physiological Tolerance Hypothesis, Mid-Domain Effect, and the Water-Energy Dynamic Theory on the Sierra Madre Occidental, Durango. The results supported the Productivity-Diversity Hypothesis, Physiological Tolerance Hypothesis and Water-Energy Dynamic Theory, but not the Mid-Domain Effect or Metabolic Theory. The annual aridity index was the variable most closely related to the diversity indices analyzed. Contemporary climate was found to have moderate to strong effects on the minimum, median and maximum tree species diversity. Because water-energy dynamics provided a satisfactory explanation for the patterns of minimum, median and maximum diversity, an understanding of this factor is critical to future biodiversity research. Quantile regression of the data showed that the three diversity parameters of tree species are generally higher in cold

  17. Mujeres de Edipo y los avatares de lo femenino en la mentalidad de occidente

    Directory of Open Access Journals (Sweden)

    María del Refugio Navarro-Hernández

    2013-08-01

    Full Text Available La crítica a la modernidad plantea una intervención a la centralidad misma del paradigma del sistema patriarcal, para develar la relación elíptica entre masculino-femenino como ontologías equidistantes entre sí, y enlazadas no solo como una complementariedad clásica, sino como la estructura de la simbolización de lo masculino desde el silencio de la madre. Se analiza, desde la construcción de lo simbólico de las estructu-ras del mito, hacia una explicación hermenéutica de las apreciaciones de las conductas más estandarizadas de las mujeres mexicanas, que pueden ser un modelo comprensivo de la interioridad femenina. Así se encuentra que la sexualidad materna y sus implicaciones en el Edipo nos ofrecen un cuestionamiento esencial a la cultura occidental y una nueva perspectiva para aprehender los avatares de la mentalidad. Una topolo-gía desmanteladora del proceso edípico y una tesis epistémica de la fe-minidad. Juego de desplazamientos y trampas de espejismos en las es-trategias de las relaciones, la trama de la red, la funcionalidad del siste-ma patriarcal y una exposición de relatos claves de la conformación del ente masculino de occidente, hasta convertirse en un ser integral (Edipo-Job que se define en la perversidad o monstruosidad de sus dominaciones y poderes, que lo hacen errar ciego y sostenido por Antígonas; estas herederas de todas las mujeres de Edipo, esfinges o pedazos que, de ideal en ideal, se adhieren a la persona de Edipo mientras vaga en las sombras, en el silencio de su amante y madre.

  18. Arsénico en aguas naturales del sudeste de la provincia de Córdoba, Argentina.

    Directory of Open Access Journals (Sweden)

    Alejo Leopoldo Perez Carrera

    2013-10-01

    Full Text Available En Argentina, existen grandes regiones que por sus características edafoclimáticas, poseen excelentes aptitudes agropecuarias, sin embargo, sufren limitaciones de desarrollo debido a la disponibilidad de agua y la calidad del recurso hídrico disponible. Uno de los elementos químicos presentes en el agua, con mayor impacto sobre la salud humana y animal, es el arsénico. La región afectada, abarca las provincias de Córdoba, La Pampa, Santiago del Estero, San Luis, Santa Fe, Buenos Aires, Chaco, Salta, Tucumán, San Juan y Mendoza. El objetivo de este trabajo es analizar la presencia y distribución del arsénico en agua superficial y subterránea en el sudeste de la provincia de Córdoba, una de las zonas más afectadas de Argentina por la presencia de arsénico en el agua.

  19. Activities with Argentina

    International Nuclear Information System (INIS)

    1999-01-01

    In 1989, the US Department of Energy (DOE) responded to the need to redirect resources from weapons production to environmental restoration and waste management by establishing the Office of Environmental Management (EM) and delegated to this office the responsibility of cleaning up the US nuclear weapons complex. Now in its eight year, EM's mission has three central facets: (1) to assess, remediate, and monitor contaminated sites and facilities; (2) to store, treat, and dispose of waste from past and current operations; and (3) to develop and implement innovative technologies for environmental cleanup. To this end, EM has established domestic and international cooperative technology development programs, including one with the Republic of Argentina. Cooperating with Argentine scientific institutes and industries meets US cleanup objectives by: (1) identifying and accessing Argentine EM-related technologies, thereby leveraging investments and providing cost-savings; (2) improving access to technical information, scientific expertise, and technologies applicable to EM needs; and (3) fostering the development of innovative environmental technologies by increasing US private sector opportunities in Argentina in EM-related areas

  20. QUBIC in Argentina

    Science.gov (United States)

    García, B.; Harari, D.; Etchegoyen, A.; Medina, M. C.; Romero, G. E.; Qubic Collaboration

    2017-10-01

    QUBIC (QU Bolometric Interferometer for Cosmology) is an experimental cosmology project to measure the modes in the polarization of the cosmic background radiation (CBR), the fossil relic that reveals the properties at the Universe 380,000 years after the Planck Era. Discovery of the CBR in 1964 and measurement of tiny temperature anisotropies in 1992 were major breakthroughs in our understanding of the Universe. The next challenge is to measure the polarization of the CBR accurately enough to detect modes that would reveal the existence of primordial gravitational waves produced in the first stages of the Planck Era and probe inflation theory, that assumes an accelerated expansion during the first seconds. The mode signal is however extremely weak and its measurement requires complex instruments. The QUBIC collaboration has developed the concept of interferometric bolometry, that brings together the sensitivity of bolometric detectors with the control of systematic effects provided by interferometry. QUBIC is an international collaboration involving several universities and laboratories in France, Italy, United Kingdom and USA. Recently, Argentina has suggested Alto Chorrillo (Salta), as candidate site for the installation of the experiment, next to the LLAMA site. Here we describe the scientific objectives and the main features of the experiment and we detail the process through which the international collaboration decided to install in Argentina its first module as well as the challenges for our country in this project.

  1. RERTR activities in Argentina

    International Nuclear Information System (INIS)

    Adelfang, P.; Alvarez, L.; Boero, N.; Calabrese, R.; De La Fuente, M.; Echenique, P.; Markiewicz, M.; Pasqualini, E.; Perez, A.; Piazza, A.; Ruggirello, G.; Taboada, H.

    2000-01-01

    The Atomic Energy Commission of Argentina has been involved in the Reduced Enrichment for Research and Test Reactors Program since 1978. The most relevant milestones of the program, regarding fuel R and D activities, were the development and manufacturing at industrial scale of U 3 O 8 dispersed fuel assemblies and the conversion of the RA-3 reactor core to LEU fuel. More recently, the activities were focused in the development of high density U 3 Si 2 fuel with a density of 4.8 gU/cm 3 and the improvement of the manufacturing process of U 3 Si 2 powder. Currently one of the main objectives is to develop and qualify the technology for the production of high-density LEU fuel elements using U-Mo alloy. Several alternative ways to obtain U-Mo powder are under development with the aim of evaluating plant scale production and costs. To boost this program the main research reactor of Argentina, the RA-3, will be upgraded to 10 MW early in 2001 and the hot cells at the Ezeiza Atomic Center are fully operational after important investments. Significant progresses were also carried out in the development of LEU targets for the production of Mo 99 . Experimental work has demonstrated the feasibility of the manufacturing and radiochemical processing of miniplate targets prepared with dispersed UAl x , maintaining the geometry and the alkaline processing of the HEU targets used so far. (author)

  2. Population structure in Argentina.

    Directory of Open Access Journals (Sweden)

    Marina Muzzio

    Full Text Available We analyzed 391 samples from 12 Argentinian populations from the Center-West, East and North-West regions with the Illumina Human Exome Beadchip v1.0 (HumanExome-12v1-A. We did Principal Components analysis to infer patterns of populational divergence and migrations. We identified proportions and patterns of European, African and Native American ancestry and found a correlation between distance to Buenos Aires and proportion of Native American ancestry, where the highest proportion corresponds to the Northernmost populations, which is also the furthest from the Argentinian capital. Most of the European sources are from a South European origin, matching historical records, and we see two different Native American components, one that spreads all over Argentina and another specifically Andean. The highest percentages of African ancestry were in the Center West of Argentina, where the old trade routes took the slaves from Buenos Aires to Chile and Peru. Subcontinentaly, sources of this African component are represented by both West Africa and groups influenced by the Bantu expansion, the second slightly higher than the first, unlike North America and the Caribbean, where the main source is West Africa. This is reasonable, considering that a large proportion of the ships arriving at the Southern Hemisphere came from Mozambique, Loango and Angola.

  3. The Bolivian Source Rocks. Sub Andean Zone. Madre de Dios. Chaco Les roches mères de Bolivie. Subandin. Madre de Dios. Chaco

    Directory of Open Access Journals (Sweden)

    Diaz Martinez E.

    2006-11-01

    Full Text Available A complete study of source-rock geochemical data has been carried out for the Bolivian foothills and foreland (Sub Andean Zone, Chaco and Madre de Dios in order to quantify the petroleum potential of the area. Overall available data have been compiled in a database, and a synthesis of the results is presented here. Besides the classical mid-Devonian source rocks (Tequeje Fm in the north, Limoncito Fm in the center and Los Monos Fm in the south, others may be just as important : theTomachi Fm (late Devonian in the north of the country and the Copacabana Fm. (late Carboniferous-early Permian in the northern Sub Andean Zone. Both present an excellent potential with S2 up to 40 mg HC/g and average values larger than 10 mg HC/g on few hundred meters. The latest Cretaceous (Flora Fm in the northern Sub Andean Zone also presents locally a high potential but has almost no influence, its thickness being quite reduced. Almost all the source rocks matured during the Neogene due to the subsidence in the Andean foreland and, locally, in the piggyback basins, and are thus involved in the current petroleum system. Silurian and Lower Paleozoic units also contain thick shale beds, but these source rocks were mature before the Jurassic in most of the country, except in the Chaco, the Boomerang and the central Sub Andean Zone, where the Silurian is not nowadays overmature and may play an important role. The different zones are compared based on their Source Potential Index (SPI which indicates that the richest areas are the northern Sub Andean Zone and the Madre de Dios basin with SPI greater than 10 t/m². Since these two areas remain almost unexplored and, at least for the northern Sub Andean zone, present very large structures, these results allow to be optimistic about the possibilities for future exploration. Une base de données géochimiques a été mise en place entre 1994 et 1995 à YPFB (Yacimientos Petrolíferos Fiscales Bolivianos afin de regrouper les

  4. RECURSOS VEGETALES Y PRÁCTICAS ALIMENTARIAS ENTRE INDÍGENAS TAPIETE DEL NORESTE DE LA PROVINCIA DE SALTA, ARGENTINA

    Directory of Open Access Journals (Sweden)

    María Cecilia Montani

    2016-01-01

    Full Text Available Se identifican las especies vegetales y sus partes empleadas en las prácticas alimentarias de los indígenas tapiete del noreste de la provincia de Salta, Argentina, así como sus formas de recolección, elaboración, consumo y almacenamiento. La finalidad última de este trabajo es contribuir a la apreciación y registro de los conocimientos del pueblo tapiete sobre estos aspectos de su cultura. Se efectuaron cinco campañas al Chaco semiárido norte y a la ciudad de Tartagal, donde se obtuvieron los datos etnobotánicos a partir de 75 entrevistas realizadas a un total de 32 colaboradores tapiete calificados y ocasionales. Cada una de las plantas alimenticias indicadas fue colectada e identificada por los autores y depositadas en el Herbario Ruiz Leal (MERL. Se registra un total de 54 plantas nativas, pertenecientes a 23 familias botánicas, empleadas como alimento por los tapiete en 106 preparaciones culinarias o formas de consumo y 13 formas de conservación. Las principales especies en su alimentación son Anisocapparis speciosa, Prosopis aff. elata y Prosopis alba con seis usos cada una y Ziziphus mistol, Geoffroea decorticans y Funastrum clausum con cuatro aplicaciones. La mayoría de estos usos (55%; 59 no incluyen preparación alguna -se consumen crudos-, el 21 % (22 se consumen cocidos (hervidos o asados, mientras que sus usos en bebidas, condimentos y harinas representan una minoría de las aplicaciones (24%; 25. Se registra por vez primera el consumo alimenticio de las hojas de Passiflora mooreana y de P. cincinatta por etnias del Gran Chaco.

  5. Research reactors in Argentina

    International Nuclear Information System (INIS)

    Carlos Ruben Calabrese

    1999-01-01

    Argentine Nuclear Development started in early fifties. In 1957, it was decided to built the first a research reactor. RA-1 reactor (120 kw, today licensed to work at 40 kW) started operation in January 1958. Originally RA-1 was an Argonaut (American design) reactor. In early sixties, the RA-1 core was changed. Fuel rods (20% enrichment) was introduced instead the old Argonaut core design. For that reason, a critical facility named RA-0 was built. After that, the RA-3 project started, to build a multipurpose 5 MW nuclear reactor MTR pool type, to produce radioisotopes and research. For that reason and to define the characteristics of the RA-3 core, another critical facility was built, RA-2. Initially RA-3 was a 90 % enriched fuel reactor, and started operation in 1967. When Atucha I NPP project started, a German design Power Reactor, a small homogeneous reactor was donated by the German Government to Argentina (1969). This was RA-4 reactor (20% enrichment, 1W). In 1982, RA-6 pool reactor achieved criticality. This is a 500 kW reactor with 90% enriched MTR fuel elements. In 1990, RA-3 started to operate fueled by 20% enriched fuel. In 1997, the RA-8 (multipurpose critical facility located at Pilcaniyeu) started to operate. RA-3 reactor is the most important CNEA reactor for Argentine Research Reactors development. It is the first in a succession of Argentine MTR reactors built by CNEA (and INVAP SE ) in Argentina and other countries: RA-6 (500 kW, Bariloche-Argentina), RP-10 (10MW, Peru), NUR (500 kW, Algeria), MPR (22 MW, Egypt). The experience of Argentinian industry permits to compete with foreign developed countries as supplier of research reactors. Today, CNEA has six research reactors whose activities have a range from education and promotion of nuclear activity, to radioisotope production. For more than forty years, Argentine Research Reactors are working. The experience of Argentine is important, and argentine firms are able to compete in the design and

  6. Heterogeneities in the Ecoepidemiology of Trypanosoma cruzi Infection in Rural Communities of the Argentinean Chaco

    OpenAIRE

    Cardinal, M. Victoria; Orozco, M. Marcela; Enriquez, Gustavo F.; Ceballos, Leonardo A.; Gaspe, María Sol; Alvarado-Otegui, Julián A.; Gurevitz, Juan M.; Kitron, Uriel; Gürtler, Ricardo E.

    2014-01-01

    We conducted a cross-sectional survey of Trypanosoma cruzi infection of Triatoma infestans as well as dogs and cats in 327 households from a well-defined rural area in northeastern Argentina to test whether the household distribution of infection differed between local ethnic groups (Tobas and Creoles) and identify risk factors for host infection. Overall prevalence of infection of bugs (27.2%; 95% confidence interval = 25.3–29.3%), dogs (26.0%; 95% confidence interval = 23.3–30.1%), and cats...

  7. History of radiobiology in Argentina

    International Nuclear Information System (INIS)

    Mayo, Jose

    2004-01-01

    Radiobiology is a multidisciplinary science dealing with ionising radiation effects on biological material. The history of Radiobiology begins in Germany and France around 1886. Radiobiology was introduced in Argentina in 1926 at the Institute of Oncology Angel H. Roffo as a biomedical research branch. Later on in 1957 was incorporated at the National Atomic Energy Commission (CNEA) of Argentina as a result of the newly started nuclear activities in Argentina. Prior that time no Radiobiology research existed in Argentina. To fill this need a Project to create new laboratories was elaborated by the CNEA. New laboratories in Radiobiodosimetry, Cellular Radiobiology, Radiopathology, Radiomicrobiology, Genetics and Somatic Effects were created. Human resources on different areas of Radiobiology were formed with the assistance of IAEA. With professional and technical personnel specialized in Radiobiology at the beginning of the 1970 decade, the transference of fundamental and applied research to others laboratories started. (author)

  8. The health crisis in Argentina.

    Science.gov (United States)

    Escudero, José Carlos

    2003-01-01

    The health crisis in Argentina is part of the larger crisis that has resulted from a collapse in the country's economic and political systems. After a brief review of the country's history over the last century, from international success story to economic failure, the author explains the health crisis in particular and the social crisis in general in terms of failed neoliberal policies imposed on Argentina by the United States and International Monetary Fund through the mediation of the country's political class.

  9. Operating practical experience at Argentina

    International Nuclear Information System (INIS)

    Quihillalt, Oscar

    1997-01-01

    Operating experiences of Atucha-1 and Embalse Nuclear Power Plants were discussed in this work. The technical and economic aspects, such as reliability, availability, personnel training, operating costs, prices and market, which exercise influence upon Argentina nuclear energy policy, mainly on the power electric generation by nuclear power plants were considered. Finally the current status of the nucleoelectric sector in Argentina and forecasting were analysed

  10. Genetic diversity of a late prehispanic group of the Quebrada de Humahuaca, northwestern Argentina.

    Science.gov (United States)

    Mendisco, Fanny; Keyser, Christine; Seldes, Veronica; Rivolta, Clara; Mercolli, Pablo; Cruz, Pablo; Nielsen, Axel E; Crubezy, Eric; Ludes, Bertrand

    2014-09-01

    This palaeogenetic study focused on the analysis of a late prehispanic Argentinean group from the Humahuaca valley, with the main aim of reconstructing its (micro)evolutionary history. The Humahuaca valley, a natural passageway from the eastern plains to the highlands, was the living environment of Andean societies whose cultural but especially biological diversity is still poorly understood. We analyzed the DNA extracted from 39 individuals who populated this upper valley during the Regional Development period (RDP) (between the 11th and 15th centuries CE), to determine their maternal and paternal genetic ancestry. Some mitochondrial and Y-chromosomal haplotypes specific to the Andean region are consistent with an origin in the highlands of Central Andes. On the other hand, a significant genetic affinity with contemporary admixed communities of the Chaco area was detected. Expectedly, recent demographic events, such as the expansion of the Inca Empire or the European colonization, have changed the original mitochondrial gene pool of the ancient Humahuaca Valley community. Finally, we identified a particular geographical organization of the prehispanic populations of Northwestern Argentina. Our results suggest that the communities of the region were divided between two different spheres of interaction, which is consistent with assumptions made by means of craniometric traits. © 2014 John Wiley & Sons Ltd/University College London.

  11. Principales criaderos para Aedes aegypti y culícidos asociados, Argentina

    Directory of Open Access Journals (Sweden)

    Marina Stein

    2002-10-01

    Full Text Available Se identificaron criaderos de Aedes (Stegomyia aegypti en dos ciudades de la provincia del Chaco (Noreste de Argentina: Presidencia Roque Saenz Peña y Machagai. Los recipientes encontrados en los patios de las viviendas capaces de colectar agua se clasificaron según tipo y tamaño, se contaron y examinaron. Aedes aegypti y Culex quinquefasciatus fueron las especies mas abundantes, encontrándose además Cx. maxi, Cx. saltanensis y Ochlerotatus scapularis. Los neumáticos y cajas de baterías para autos fueron los recipientes que más aportaron a la producción de formas inmaduras de los culícidos colectados. Las lluvias fueron un factor importante para la proliferacion de Ae. aegypti, así como también el habito comun en la población de guardar recipientes en sus casas que permitan el desarrollo de estos culícidos.

  12. Principales criaderos para Aedes aegypti y culícidos asociados, Argentina

    Directory of Open Access Journals (Sweden)

    Stein Marina

    2002-01-01

    Full Text Available Se identificaron criaderos de Aedes (Stegomyia aegypti en dos ciudades de la provincia del Chaco (Noreste de Argentina: Presidencia Roque Saenz Peña y Machagai. Los recipientes encontrados en los patios de las viviendas capaces de colectar agua se clasificaron según tipo y tamaño, se contaron y examinaron. Aedes aegypti y Culex quinquefasciatus fueron las especies mas abundantes, encontrándose además Cx. maxi, Cx. saltanensis y Ochlerotatus scapularis. Los neumáticos y cajas de baterías para autos fueron los recipientes que más aportaron a la producción de formas inmaduras de los culícidos colectados. Las lluvias fueron un factor importante para la proliferacion de Ae. aegypti, así como también el habito comun en la población de guardar recipientes en sus casas que permitan el desarrollo de estos culícidos.

  13. Propuesta de zonificación de uso del sector occidental del Parque Nacional Canaima. Estado Bolívar

    OpenAIRE

    Roberto J. Rivera Lombardi; Jorge L. Padrón; Otto Huber; Iván Linares

    2006-01-01

    En el presente trabajo se establece una propuesta de zonificación del sector occidental del Parque Nacional Canaima, adecuada a las potencialidades y limitaciones de los recursos naturales, los usos y actividades desarrolladas por la población residente, considerando la materia previamente reglamentada en la normativa ambiental venezolana; documento que pretende coadyuvar con el plan de ordenamiento y reglamento de uso del referido sector. Esta propuesta se realiza con or...

  14. I mostri dell’Occidente medievale: fonti e diffusione di razze umane mostruose, ibridi ed animali fantastici

    OpenAIRE

    Sebenico, Sara

    2005-01-01

    Nell'Occidente medievale i mostri sono ovunque: nei bestiari, nella letteratura di viaggio, nelle enciclopedie, nei romanzi, ma anche nei sermoni recitati in Chiesa. I mostri sono diffusissimi nell'arte, in particolare nel periodo romanico e gotico nella scultura religiosa e nella miniatura. I mostri nel Medioevo comprendono le razze umane mostruose, come cinocefali e acefali, gli animali fantastici come grifone, basilisco, unicorno e gli ibridi, ma c'erano anche ibridi vegetali, come l'anatr...

  15. CASE REPORT: CHARACTERIZATION OF THE PRODUCTION SYSTEM OF BEEF CATTLE, DEVELOPED BY BRAZILIANS IN THE REGION OF CHACO BOLIVIANO

    Directory of Open Access Journals (Sweden)

    Ronan Lopes Albino

    2011-12-01

    Full Text Available The purpose of this work is to describe the characteristic of the beef cattle production system in Bolivia. From a scholarship that happened in a Brazilian company who provide management in livestock, during this time it was possible know a little bit about the characteristic on Bolivia livestock. In oriental region from Bolivia the Boviplan Consultoria Agropecuaria Ltda., Brazilian company with head office in Piracicaba-SP, built an office, to offer a bigger technical support for customer that have farm in Bolivia. This region is inside on biome of Bolivian Chaco that is characterized by soil extremely fertile and cheap land. These factora help to explain the favorable scenario of beef cattle found on farms that are managed by Boviplan in Bolivia.

  16. Historiografía latinoamericana de la Primera Guerra Mundial. Los casos de Argentina, México y Colombia

    Directory of Open Access Journals (Sweden)

    Renzo Ramírez Bacca

    2015-01-01

    Full Text Available El texto ofrece una revisión crítica sobre la historiografía latinoamericana en torno a la Primera Guerra Mundial. El autor se concentra en los casos de Argentina, México y Colombia para rendir cuenta de las líneas de trabajo, categorías de análisis y aportes recientes sobre la problemática. Tiene en cuenta de igual modo, el contexto historiográfico occidental, pone en discusión y dialoga con los estudios recientes, del mismo modo como advierte sobre sus limitaciones, y el porqué de los vacíos historiográficos señalados.

  17. Miradas del desierto. Niños saharauis retratan la sociedad occidental

    Directory of Open Access Journals (Sweden)

    Ainara Miguel Sáez de Urabain

    2010-10-01

    Full Text Available En 1966, los investigadores norteamericanos John Adair y Sol Worth prestaron siete sencillas cámaras de vídeo a siete Navajos para que grabaran sus propias películas a su manera, con una mínima instrucción técnica. La experiencia fue todo un éxito; los indios lograron reproducir en las imágenes tanto su propia concepción del mundo como su lugar en él. Este proyecto pretende reproducir aquel ensayo, entregando diez cámaras fotográficas a veinte de los niños y niñas saharauis que el pasado verano de 2009, gracias a la Asociación Burgalesa de Amigos del Pueblo Saharaui, dejaron atrás los campamentos de refugiados para pasar sus vacaciones en la provincia.Permitimos que, durante los meses de julio y agosto, los niños fotografiaran aquello que consideraran digno de fotografiar del modo en que prefirieran. Así, no sólo se retrataban a sí mismos, sino que también nos representaban a nosotros, parte de una sociedad occidental mucho más acostumbrada a mirar que a ser vista.

  18. Religiosidad en Al-Andalus: el hombre santo en el Islam occidental

    Directory of Open Access Journals (Sweden)

    Rodríguez Mediano, Fernando

    1999-06-01

    Full Text Available Hagiographical literature in Western Islam is abundant from the 12th-13th centuries onward, and is tied to the introduction and expansión of sufism in al-Andalus and Morocco. In this paper I analyse three hagiographical texts from al-Andalus in order to understand how the authority of a holy man is constructed from two perspectives: fear of his miraculous power and love inspired in his followers. Through these two passions, love and fear, one can infer the existence of a political and religious pattern for authoritarian relationships in Western Islam.Los siglos XII y XIII son fundamentales para la expansión del sufismo en el Occidente musulmán y para la creación de una tradición hagiográfica puramente magrebí. En este artículo se utilizan tres textos hagiográficos andalusíes de esa época para analizar cómo se construye la autoridad del hombre santo desde una doble perspectiva: la del miedo a la acción del santo y la del amor que inspira. A través de estas pasiones se puede rastrear la existencia de un modelo de autoridad que es a la vez religioso y político.

  19. Fishery of the short-necked clam Paphia undulata in Southern Negros Occidental, Central Philippines

    Directory of Open Access Journals (Sweden)

    Karen A. Villarta

    2010-06-01

    Full Text Available This study documents the fishery of the short-necked clam Paphia undulata in coastal waters of southern Negros Occidental. Catch and effort estimates were determined based on daily records of compressor divers gathered between February-July 2008 in Himamaylan City and July 2008-May 2009 in the town of Hinigaran. Fishing and marketing practices in both areas were also documented and population biology information noted.Compared to earlier conditions, present fishing patterns show a worsened stage of overexploitation primarily characterized by collection of predominantly small and immature (mostly <45 mm shell lengths sizes. Intensity/duration and location of fishing also varied due to both abundance and demand factors.The difference in sizes of clams and the varying fishing durations in each area suggest a non-uniform pattern of settlement resulting most likely from differential larval recruitment, the likely factors causing the local boom and bust fishery. The larger and long term extent of the effect of these factors can only be further investigated by parallel 2-3 year fishery-dependent and -independent surveys

  20. An application of mathematical models to select the optimal alternative for an integral plan to desertification and erosion control (Chaco Area – Salta Province – Argentina

    Directory of Open Access Journals (Sweden)

    J. B. Grau

    2010-11-01

    Full Text Available Multi-criteria Decision Analysis (MCDA is concerned with identifying the values, uncertainties and other issues relevant in a given decision, its rationality, and the resulting optimal decision. These decisions are difficult because the complexity of the system or because of determining the optimal situation or behaviour. This work will illustrate how MCDA is applied in practice to a complex problem to resolve such us soil erosion and degradation. Desertification is a global problem and recently it has been studied in several forums as ONU that literally says: "Desertification has a very high incidence in the environmental and food security, socioeconomic stability and world sustained development". Desertification is the soil quality loss and one of FAO's most important preoccupations as hunger in the world is increasing. Multiple factors are involved of diverse nature related to: natural phenomena (water and wind erosion, human activities linked to soil and water management, and others not related to the former. In the whole world this problem exists, but its effects and solutions are different. It is necessary to take into account economical, environmental, cultural and sociological criteria. A multi-criteria model to select among different alternatives to prepare an integral plan to ameliorate or/and solve this problem in each area has been elaborated taking in account eight criteria and five alternatives. Six sub zones have been established following previous studies and in each one the initial matrix and weights have been defined to apply on different criteria. Three multicriteria decision methods have been used for the different sub zones: ELECTRE, PROMETHEE and AHP. The results show a high level of consistency among the three different multicriteria methods despite the complexity of the system studied. The methods are fully described for La Estrella sub zone, indicating election of weights, Initial Matrixes, algorithms used for PROMETHEE, and the Graph of Expert Choice showing the AHP results. A brief schema of the actions recommended for each of the six different sub zones is discussed.

  1. An application of mathematical models to select the optimal alternative for an integral plan to desertification and erosion control (Chaco Area - Salta Province - Argentina)

    Science.gov (United States)

    Grau, J. B.; Antón, J. M.; Tarquis, A. M.; Colombo, F.; de Los Ríos, L.; Cisneros, J. M.

    2010-11-01

    Multi-criteria Decision Analysis (MCDA) is concerned with identifying the values, uncertainties and other issues relevant in a given decision, its rationality, and the resulting optimal decision. These decisions are difficult because the complexity of the system or because of determining the optimal situation or behaviour. This work will illustrate how MCDA is applied in practice to a complex problem to resolve such us soil erosion and degradation. Desertification is a global problem and recently it has been studied in several forums as ONU that literally says: "Desertification has a very high incidence in the environmental and food security, socioeconomic stability and world sustained development". Desertification is the soil quality loss and one of FAO's most important preoccupations as hunger in the world is increasing. Multiple factors are involved of diverse nature related to: natural phenomena (water and wind erosion), human activities linked to soil and water management, and others not related to the former. In the whole world this problem exists, but its effects and solutions are different. It is necessary to take into account economical, environmental, cultural and sociological criteria. A multi-criteria model to select among different alternatives to prepare an integral plan to ameliorate or/and solve this problem in each area has been elaborated taking in account eight criteria and five alternatives. Six sub zones have been established following previous studies and in each one the initial matrix and weights have been defined to apply on different criteria. Three multicriteria decision methods have been used for the different sub zones: ELECTRE, PROMETHEE and AHP. The results show a high level of consistency among the three different multicriteria methods despite the complexity of the system studied. The methods are fully described for La Estrella sub zone, indicating election of weights, Initial Matrixes, algorithms used for PROMETHEE, and the Graph of Expert Choice showing the AHP results. A brief schema of the actions recommended for each of the six different sub zones is discussed.

  2. Haciendo desarrollo a lo indígena Proyectos de desarrollo en comunidades indígenas del Chaco salteño, Argentina

    Directory of Open Access Journals (Sweden)

    Natalia Castelnuovo Biraben

    2014-01-01

    Full Text Available A partir de una perspectiva etnográfica del proceso de implementación de un programa de desarrollo en comunidades indígenas, en el presente artículo nos proponemos dejar al descubierto los conflictos emergentes entre la Carta de cooperación firmada por el Estado argentino y el Banco Interamericano de Desarrollo, en cuanto es, por un lado, expresión de una episteme de la dominación y, por el otro, de una microfísica de la resistencia cotidiana desplegada por el Consejo de Caciques de los Siete Pueblos. El poder de negociación de la organización indígena la constituyó en broker de desarrollo, al implementar los distintos proyectos “a lo indígena”. El análisis de este proceso nos permite reflexionar acerca de las relaciones que pautan a las organizaciones indígenas con el Estado argentino y con los organismos de financiamiento internacional.

  3. Norm survey in Argentina

    International Nuclear Information System (INIS)

    Canoba, Analia Cecilia; Gnoni, Gabriela Alejandra; Truppa, W.

    2008-01-01

    The oil and gas industry, which is especially significant in Argentina, is one industry that concentrates natural radionuclides during its processes. In addition, there are a few underground mines under development, where radon levels may be high. The Nuclear Regulatory Authority of Argentina (ARN) carried out a project with the objective of evaluating NORM, mainly in these types of industries. Eight facilities were characterized, three related to the gas industry, four related to the oil industry and a survey of radon gas in a gold underground mine. First, background measurements were made and then a screening survey was carried out to detect values above background. Of the values obtained, 57% were in the background range, 19% were below 2 μSv/h, 15% were in the range 2-10 μSv/h and 9% were above 10 μSv/h. Some values were as high as 400 μSv/h. The annual effective doses were estimated to be in the range 0.02-1.6 mSv/a. Samples were taken and later analysed by gamma spectrometry, liquid scintillation and fluorimetry. It was confirmed that the main radionuclides involved in the oil and gas extraction process are 226 Ra and 228 Ra. The radium isotope concentrations measured in some samples were above the exemption values established by the International Basic Safety Standards. Elevated radon levels were detected in gas facilities and in the gold mine under development. The values obtained in gas facilities showed that radon concentrates in the ethane and propane flows. As the flows in the gas industry are confined, it does not mean an exposure during normal operation. In the case of the gold mine, the values detected were informed to the pertinent authorities as well as the facility in order to take actions to reduce concentrations below the action levels. Finally, protective measures to reduce occupational doses in the cleaning and maintenance processes were suggested, as well as for storage of NORM-contaminated items. (author)

  4. A new species of Mathevotaenia (Cestoda, Anoplocephalidae parasitizing Tropidurus spinulosus (Reptilia, Squamata from northeastern Argentina Una especie nueva de Mathevotaenia (Cestoda, Anoplocephalidae parásita de Tropidurus spinulosus (Reptilia, Squamata del noreste de Argentina

    Directory of Open Access Journals (Sweden)

    Lía Inés Lunaschi

    2012-09-01

    Full Text Available Mathevotaenia chaquensis n. sp. (Cestoda, Anoplocephalidae, Linstowiinae from a Spiny Lava Lizard, Tropidurus spinulosus, collected in Chaco Province, Argentina, is described. This is the second species of Mathevotaenia described from Neotropical reptiles. The new species is mainly characterized by having a relatively small strobila, 24 mm in total length, with about 100 craspedote proglottids, and 19-24 testes per proglottid. Among the South American species of Mathevotaenia, M. argentinensis is most similar to the new species by having similar body length and number of testes, but the major differences between both species include the size of suckers, neck, proglottids, testes and egg capsules, and the shape of the genital atrium and ovary (with 10-13 lobules on each side in M. argentinensis,, and 4-7 lobules in M. chaquensis n. sp.. A key to the species of the South American members of the Mathevotaenia Akumyan, 1946 is presented.Mathevotaenia chaquensis n. sp. (Cestoda, Anoplocephalidae, Linstowiinae es descrita parasitando al lagarto de los quebrachales, Tropidurus spinulosus, procedente de la Provincia del Chaco, Argentina. Esta es la segunda especie de Mathevotaenia descrita parasitando reptiles Neotropicales. La nueva especie está caracterizada principalmente por tener un estróbilo relativamente pequeño, 24 mm de largo, con aproximadamente 100 proglótides craspedotas y 19-24 testículos por proglótide. Entre las especies sudamericanas de Mathevotaenia, M. argentinensis es la más semejante a la nueva especie por presentar similar longitud del cuerpo y número de testículos, pero difieren en el tamaño de las ventosas, cuello, proglótides, testículos y huevos. Además difieren en la forma del atrio genital y del ovario (10-13 lóbulos a cada lado enM. argentinensis vs. 4-7 lóbulos en M. chaquensis n. sp.. Se presenta una clave para la determinación de las especies sudamericanas de Mathevotaenia Akumyan, 1946.

  5. Coccocypselum pulchellum (Rubiaceae, nuevo registro para Argentina

    Directory of Open Access Journals (Sweden)

    Elsa L. Cabral

    2007-01-01

    Full Text Available Se cita Coccocypselum pulchellum por primera vez para Argentina, en Predio Guaraní, Misiones. Esta es la tercera especie de Coccocypselum registrada para la flora de Argentina junto con C. hasslerianum y C. lanceolatum. Se incluyen descripciones, ilustraciones y una clave para reconocer las tres especies argentinas de Coccocypselum.

  6. Argentina: Background and U.S. Relations

    Science.gov (United States)

    2008-11-05

    Comercio Internacional, Y Culto, Comunicado de la Cancillería Argentina, September 11, 2008. 43 A. Rebossio, "Fernández Acusa al FBI de Desestablizar...Argentina," El País (Madrid), September 13, 2008. 44 “Argentina Slams Witness in Cash Suitcase Scandal,” Associated Press Newswires, November 4, 2008

  7. Climatology of hail in Argentina

    Science.gov (United States)

    Mezher, Romina N.; Doyle, Moira; Barros, Vicente

    2012-10-01

    The annual cycle, annual and seasonal frequency and geographical distribution of hail in Argentina during the 1960-2008 period are examined. Eight regions covering the whole territory were defined based on the correlation of the mean annual hail frequency between all weather stations. Regions lying between 30° and 40°S as well as those dominated by mountains present the highest hail frequencies in Argentina. The eastern and coastal areas of the country experience hail events mainly during springtime but they may start in late winter and continue through the beginning of summer. Events in western and central Argentina also predominate in spring but the maximum frequencies are observed during summer months. Trends in the annual number of hail events calculated for each region indicate that events in northwestern and northeastern Argentina have been increasing as well as in southern Patagonia. On the other hand, in central Argentina, southern Buenos Aires-La Pampa, northern Buenos Aires-Litoral and northern Patagonia trends are negative and statistically significant in the first two regions, basically by the decrease of events during spring and summer.

  8. Nuclear Activities in Argentina, 2010

    International Nuclear Information System (INIS)

    Ferreri, J.C.; Ferreri, J.C.; Clausse, A.; Clausse, A.; Clausse, A.; Ordonez, J.P.; Mazzantini, O.A.

    2011-01-01

    Nuclear activities in Argentina are restarted. After almost two decades of near stagnation, the governments political decision of August 2006 regarding electrical energy production, considered the nuclear option as a valid one to solve the problems of the growing demand of electrical energy. This decision triggered again the activities related to the finalization of the third nuclear power reactor (Atucha-II), now actively progressing, the construction of a prototype of the CAREM integral advanced reactor, the life extension of the Embalse CANDU nuclear power plant (NPP) and the studies for the emplacement of a fourth NPP in an appropriate site. In all those years of near stagnation, there were notable exceptions related to the design and construction of experimental and radioisotope production reactors, led by INVAP, a state-owned industry, which exported its production. The accompanying industries of nuclear fuel elements production also remained active, given the demand of the two active NPPs. Meanwhile, the National Atomic Energy Commission of Argentina continued the efforts on research and development that were at the base of the technological achievements of the nuclear activities in Argentina. Nuclear safety studies associated with Atucha II and Embalse NPPs and radiological safety were also a substantive part of the continued efforts by Nucleo-Electrica de Argentina SA and the Nuclear Regulatory Authority of Argentina

  9. Country watch. Argentina.

    Science.gov (United States)

    Perez, P

    1994-01-01

    The Argentine Network of Women Living with HIV/AIDS (ANW) provides general information about acquired immunodeficiency syndrome (AIDS), assistance in assessing medications through state and private services, and information concerning and referrals to nongovernmental organizations (NGOs) and governmental social services to low income women who have been diagnosed with human immunodeficiency virus (HIV) infection. Workshops allow the women to become more active on their own behalf and contribute to the reorientation of health and social services to better meet their needs. Due to the stigma attached to AIDS in Argentina, ANW works to ensure the human rights of these women through participation in the Ministry of Interior Programme against Discrimination and in public events that inform the community about the concerns of HIV positive women with regard to discrimination. A bulletin provides scientific and medical information, news on activities, model advocacy and policy statements, and addresses of support agencies. Contributions are accepted from all HIV positive women. In order to reach isolated cases outside of the capital, links are maintained with other AIDS organizations in the nation.

  10. Argentina and Brazil

    International Nuclear Information System (INIS)

    Gamba-Stonehouse, V.

    1991-01-01

    This paper reports that security is defined in different ways by many international actors. To some, security is tied to the definition of an external threat to borders, as in the case of the NATO countries. To other, security is related to development, as in the case of most Third World countries. but notwithstanding different definitions, all countries recognize that the essence of security is the survival of the nation-state itself. The nuclear programs of Argentina and Brazil are among the oldest, most sophisticated and advanced nuclear programs anywhere in the Third World. The programs have never been explained on the basis of threat perception, and in this regard perhaps they constitute the most atypical form of nuclear proliferation known to date. Not surprisingly, any attempt to explain the rationale for the Brazilian and Argentine nuclear programs based on common issues of threat =merely confuses the issue. Thus, nationalism, the search for national identity and pride, the need to express self-sufficiency and the desire to keep options open in an insecure and evolving world order must all be analyzed to comprehend the likelihood of future types of nuclear proliferation. Meanwhile, the study of the contemporary era of Argentine-Brazilian nuclear rapprochement may provide new insights into the complex reasoning behind the decision of countries to go nuclear

  11. Pampa Húmeda, Argentina

    Directory of Open Access Journals (Sweden)

    Néstor C. Di Leo

    2007-01-01

    Full Text Available La radiación fotosintéticamente activa (PAR es importante como variable de entrada de energía en diversos procesos biológicos y su evaluación temporal tiene particular interés en el monitoreo de cultivos. Los datos de reflectancia espectral, obtenidos mediante sensores remotos, son adecuados para proporcionar observaciones de fenómenos que se relacionan con aspectos ecofisiológicos de las cubiertas vegetales, incluyendo a la productividad primaria neta (NPP. Ésta constituye una de las pocas fuentes de información acerca de los procesos del ciclo del carbono en escalas regionales o globales. La NPP se relaciona con la eficiencia del uso de la luz a través de la radiación fotosintéticamente activa absorbida (APAR y representa un indicador agroecológico de utilidad para valorar la utilización productiva del territorio. El objetivo de este trabajo es presentar un aporte metodológico a la agroecología, mediante las caracterizaciones de la NPP y la APAR, en tres situaciones geográficas y productivas de la Pampa Húmeda, Argentina.

  12. Brotes de babesiosis y anaplasmosis bovina diagnosticados en el INTA Salta, Argentina: período 2006-2016

    Directory of Open Access Journals (Sweden)

    ARAOZ V

    2017-12-01

    Full Text Available Se realizó un estudio retrospectivo de brotes de babesiosis y anaplasmosis (tristeza parasitaria bovina, TPB ocurridos entre 2006 y 2016 en el Noroeste argentino (NOA para evaluar algunos aspectos epidemiológicos y clínicos de estas enfermedades. De 4.398 muestras para diagnóstico, 238 (5,4% tuvieron sospechas de TPB, las cuales se confirmaron en 106 (44,3% casos por observación microscópica de los agentes causales. Cuarenta y siete (44,3% brotes se debieron a Anaplasma marginale, 40 (37,7% a Babesia bovis y 14 (13,2% a Babesia bigemina. En cinco (4,7% focos de babesiosis no se determinó la especie causal de Babesia. Los brotes se diagnosticaron en 62 establecimientos ganaderos de cuatro provincias (Salta, Jujuy, Santiago del Estero y Chaco. La mayoría ocurrieron en verano y otoño, con máxima incidencia en abril y nula en setiembre para ambas noxas. Las vacas adultas fueron la categoría de ganado más afectada. En 58% (61/106 de los brotes murió al menos un bovino, con un número promedio de cuatro muertes por brote. Se concluye que la TPB continúa incidiendo negativamente en la producción bovina del NOA. SUMMARY. Bovine babesiosis and anaplasmosis outbreaks diagnosed at INTA Salta, Argentina: 2006-2016. A retrospective study of babesiosis and anaplasmosis outbreaks (tick fever, TF was made, which occurred from 2006 to 2016 in Northwest Argentina (NWA, to evaluate clinical and epidemiological aspects of these diseases. From 4,398 specimens, 238 (5.4% were associated with suspicions of TF and 106 of these cases (44.3% were confirmed as TF outbreaks by microscopic observation of causal agents. Forty seven (44.3% were due to Anaplasma marginale, 40 (37.7% to Babesia bovis and 14 (13.2% to Babesia bigemina. In five (4.7% outbreaks of babesiosis, Babesia species were not determined. Outbreaks were diagnosed at 62 different cattle ranches in four provinces (Salta, Jujuy, Santiago del Estero and Chaco. The outbreaks occurred mostly during

  13. The Pilagá of the Argentine Chaco through an exoticizing and ethnographic lens: The Swedish documentary film Following Indian trails by the Pilcomayo River

    Directory of Open Access Journals (Sweden)

    Anne Gustavsson

    2013-10-01

    Full Text Available In this article, we explore how traveling relates to image production and how transcultural filmic representations both uphold and are sustained by a “coloniality of seeing.” We pay special attention to the historical conditions of film making in an expedition context and the expectations associated with early film in Sweden. We discuss this through the study of the documentary film Following Indian Trails by the Pilcomayo River, which was recorded during a Swedish expedition to the Argentine Chaco in 1920 and later released in Stockholm in 1950 during a private screening organized by the Swedish Chaco Travellers Association. We argue that the film presents an account inspired by classic ethnography which rescues and puts into circulation images of indigenous people from the “impenetrable” and “savage” Chaco. The ethnographic emphasis in the narrative seems to have shifted with time as it was probably only partly present during the shooting of the footage. In the narrative mode of “monstration,” when bodies meet machines “in the field,” native performances are presented as an “unstaged” and realist spectacle. Later in the 1950 macro-“narration,” encompassing the final cutting and editing of the original footage, fragments of spectacle are systematized into an ethnographic description of primitive life.

  14. Susceptibility to deltamethrin of wild and domestic populations of Triatoma infestans of the Gran Chaco and the Inter-Andean Valleys of Bolivia.

    Science.gov (United States)

    Gomez, Marinely Bustamante; D'Avila, Grasielle Caldas Pessoa; Orellana, Ana Lineth Garcia; Cortez, Mirko Rojas; Rosa, Aline Cristine Luiz; Noireau, François; Diotaiuti, Liléia Gonçalves

    2014-11-14

    The persistence of Triatoma infestans and the continuous transmission of Trypanosoma cruzi in the Inter-Andean Valleys and in the Gran Chaco of Bolivia are of great significance. Coincidentally, it is in these regions the reach of the vector control strategies is limited, and reports of T. infestans resistance to insecticides, including in wild populations, have been issued. This study aims to characterize the susceptibility to deltamethrin of wild and domestic populations of T. infestans from Bolivia, in order to better understand the extent of this relevant problem. Susceptibility to deltamethrin was assessed in nine, wild and domestic, populations of T. infestans from the Gran Chaco and the Inter-Andean Valleys of Bolivia. Serial dilutions of deltamethrin in acetone (0.2 μL) were topically applied in first instar nymphs (F1, five days old, fasting, weight 1.2 ± 0.2 mg). Dose response results were analyzed with PROBIT version 2, determining the lethal doses, slope and resistance ratios (RR). Qualitative tests were also performed. Three wild T. infestans dark morph samples of Chaco from the Santa Cruz Department were susceptible to deltamethrin with RR50 of Bolivia are less susceptible.

  15. Crisis de la prensa Argentina

    Directory of Open Access Journals (Sweden)

    Federico Rey Lennon

    2015-01-01

    Full Text Available La magnitud de la crisis económica Argentina es enorme y difícil saber hasta cuando se extenderá, agravada por una situación política frágil. La actual recesión ha hecho caer la inversión publicitaria a los niveles más bajos de los últimos años. De 1997 al 2001 la circulación de la prensa Argentina cayó en el 36 por ciento. El riesgo en Argentina es la eventual extranjerización de casi todos los medios de comunicación.

  16. Campos médios e processos físicos associados ao ciclo de vida da Baixa do Chaco Mean fields and physical processes associated wiht the Chaco-low lifecycle

    Directory of Open Access Journals (Sweden)

    Marcelo Enrique Seluchi

    2012-12-01

    Full Text Available A Baixa do Chaco (BCH é um sistema característico da estação chuvosa e um dos componentes das Monções da América do Sul. O presente trabalho analisa aspectos ainda não definidos da BCH, como seu ciclo de vida e os processos físicos associados, assim como, o papel que este sistema desempenha na circulação atmosférica. O estudo tem como foco os meses de verão e utiliza as reanálises elaboradas com o modelo Eta/CPTEC (2000-2004. A metodologia se baseia na escolha de três mínimos e máximos de pressão no ponto 22ºS,60ºW para cada mês do período analisado, a partir dos quais se realizaram compostos dos casos "baixos" e "altos". O ciclo de vida da BCH está relacionado com a passagem de uma perturbação de tipo frontal, de escala sinótica ou maior, que afeta especialmente a baixa troposfera. A variabilidade da BCH está associada a fortes anomalias de temperatura, vento e umidade em boa parte da porção tropical e subtropical da América do Sul. Existe também uma clara relação entre a BCH e outros sistemas típicos dessa região, como a Zona de Convergência do Atlântico Sul, a Baixa do Noroeste Argentino e o Jato de Baixos Níveis. A BCH desenvolve-se, em média, devido à ocorrência de precipitação convectiva e à presença de céu claro, enquanto que sua dissipação está ligada à advecção fria pós-frontal.The Chaco Low (CHL is a typical feature of the rainy season and an important component of the South American Monsoon System. In this work we describe several aspects of the Chaco Low do not define yet, including its lifecycle and associated processes, as well as its role on the continental-scale circulation. The study focuses on the summer months using the ETA-CPTEC reanalysis (2000-2004. A composite of "high" and "low" CHL stages was performed using three monthly cases of maximum and minimum surface pressure at 22°S-60°W. The CHL lifecycle is related with the passage of a frontal-like disturbance of synoptic

  17. Revisiting groundwater overdraft based on the experience of the Mancha Occidental Aquifer, Spain

    Science.gov (United States)

    Martínez-Santos, P.; Castaño-Castaño, S.; Hernández-Espriú, A.

    2018-01-01

    Aquifers provide a reliable freshwater source in arid and semiarid regions, where droughts are common and irrigated crops present significant water requirements, so intensive pumping is generally needed. Over-extraction leads to dropping water tables, which in turn threatens the survival of groundwater-dependent ecosystems and water supplies. This calls for strategies to channel hydrological, environmental, agricultural, political and social change. Based on the experience of the Mancha Occidental aquifer, Spain, this paper explores some of the complexities of managing groundwater, dealing with the long-term changes that intensive groundwater use has generated in the region. The Mancha experience shows how environmental conservation may drive social and economic change at the regional scale for periods spanning several decades. What makes this case study unique, however, is the combination of social and environmental conflicts, most of which stem from the prevalence of illegal water use, and their detrimental effect on Ramsar wetlands. The situation exposed a paradox, namely that subsidies for farmers to cut down on water use were actually detrimental to the welfare of groundwater-dependent ecosystems. The unexpected (and timely) occurrence of extreme rainfall events in recent times, after 40 years of ineffective management measures and sustained environmental degradation, enabled the aquifer and its associated wetlands to recover spectacularly to a near-pristine condition. As groundwater-dependent wetlands are highly sensitive ecosystems, it is concluded that it is up to society to decide how much environmental damage can be tolerated in exchange for the social and economic benefits of groundwater-based development.

  18. Isotopic evidence for identifying the mechanism of salinization of groundwater in Bacolod City,Negros Occidental

    International Nuclear Information System (INIS)

    Castaneda, Soledad S.; Almoneda, Rosalinda V.; Sucgang, Raymond J.; Desengano, Daisy; Lim, Fatima

    2008-01-01

    Saline water is easily identified by measurement of the conductivity of the ionic species in the water. In groundwater, it is important to identify the mechanism of salinization for proper management of the resource. Salinization may come from: a) leaching of salts by percolating water, b) intrusion of modern saltwater bodies of connate water, and c) concentration of dissolved salts due to evaporation. The salinity and isotopic concentrations of 18 O, 2 H, and 3 H of the water sources were used to assess the processes which lead to the salinization of groundwater in Bacolod City, Negros Occidental. The isotopic composition of deep groundwater, river water, and springs cluster along the LMWL with δ 18 O ranging from -7.9 ''promille'' to -6.5 ''promille'' and δ 2 H ranging from -52.6 ''promille'' to -39.1''promille''. Two isotopically distinct groups of deep groundwater were deleated; the higher elevation wells yielding isotopically depleted waters while the lowland wells yielding relatively enriched water with higher conductivity. The shallow coastal wells exhibited more enriched isotope values with δ 18 O values from 6.10 ''promille''-5.61''promille'' and δ 2 H from -43.1''promille'' to -38.8''promille'' and highest conductivity. The relative enrichment in the isotopic composition of the deep groundwater in the lowland and the shallow groundwater along the coast is attributed to saltwater intrusion. The process of salinization in these waters is differentiated based on the relationship between their isotopic compositions and the chlorine concentrations. The high salinity of the isotopically enriched and old deep groundwater inland is attributed to mixing with connate water. On the other hand , mixing with modern sea water is evident in the deep and shallow coastal wells. (author)

  19. DESLIZAMIENTOS NATURALES Y COMUNIDADES PIONERA DE ECOSISTEMAS MONTANOS AL OCCIDENTE DEL PARQUE NACIONAL PODOCARPUS (ECUADOR

    Directory of Open Access Journals (Sweden)

    LOZANO PABLO

    2008-07-01

    Full Text Available El Parque Nacional Podocarpus (PNP, ubicado al sur del Ecuador, ocupa una posición climatológica clave con respecto a la deflexión de Huancabamba aledaña a esta área hacia el sur, que ocasiona una barrera natural de distribución de especies y por otro lado este aislamiento biogeográfíco ha originado especiación florística en algunas especies. La geografía accidentada de esta región, sumada a la escasa capa vegetal y precipitaciones que superan los 6000 mm en los páramos, ocasiona impactos severos en los flancos orientales y occidentales de la baja Cordillera Oriental que no sobrepasa los 3700 m, en sus límites altitudinales más altos. Es aquí donde existe una dinámica alta de deslizamientos, los mismos que si bien afectan la diversidad vegetal, también son considerados un motor generador de continuos procesos de regeneración. Se establecieron 138 parcelas, distribuidas a o largo de un gradiente latitudinal y altitudinal, de 1 x 5m al occidente del PNP, encontrándose 218 especies representantes de 180 géneros y 51 familias; el piso altitudinal de mayor diversidad está a los 2700 m. El análisis TWINSPAN separó nueve comunidades vegetales, mientras que el análisis multivariado CANOCO, determinó que las características edafológicas influyen en la composición de la vegetación, mientras que la altitud y la pendiente no establecen notable diferencia.

  20. La presencia catalana en la Andalucía Occidental a finales de la Edad Media

    Directory of Open Access Journals (Sweden)

    Bello León, Juan Manuel

    2010-06-01

    Full Text Available Taking for granted that the Catalan-Aragonese expansion through the Mediterranean sea has received due attention from historians, this work deals with some realms and locations less often visited by sailors and merchants from Catalonia, Valencia or Mallorca. Its aim is to provide a view of the Catalan presence in western Andalusia throughout the late Middle Ages, analyzing its role in the Andalusian allotment and the conditions accounting for the development of such a presence in the region between the thirteenth and the fifteenth centuries. It deals particularly with the creation of family and economic bonds standing as the foundations of Catalan influence on Andalusia, which help to better understand its interest in the Middle Atlantic some time later.

    Tomada como punto de partida la idea de que la historiografía conoce bastante bien la expansión catalanoaragonesa por distintos puntos del Mediterráneo, este trabajo pretende acercarse a otros ámbitos menos frecuentados por marinos y comerciantes de aquel reino, aunque no por ello es menos importante para el desarrollo económico de Cataluña, Valencia o Mallorca. Así, el objetivo de este artículo es ofrecer una muestra de lo que fue la presencia catalana en la Andalucía Occidental a lo largo de los siglos finales de la Edad Media, analizando su participación en los repartimientos andaluces, las condiciones que afectaron al desarrollo de su presencia en la región entre los siglos XIII-XV, así como prestar una especial atención a la formación de los vínculos familiares y económicos que cimentaron su influencia en Andalucía y ayudan a explicar mejor su posterior interés por el Atlántico Medio.

  1. Tras las huellas de los Ñanaigua: de tapii, tapiete y otros salvajes en el Chaco boliviano

    Directory of Open Access Journals (Sweden)

    2004-01-01

    Full Text Available Parmi les noms de peuples et d’ethnies qui pullulent dans les chroniques coloniales, ceux de Tapii et Tapiete ont mis beaucoup d’auteurs à l’épreuve et ont été qualifiés de véritable “énigme ethnografique”. Ils ont donné lieu, en particulier, à de nombreuses confusions dans la littérature postérieure, faute de prêter attention à leur sens original et générique : “esclaves”, ou “vrais esclaves”. Ainsi, les étiquettes de Tapii et Tapiete ont pu désigner différentes ethnies selon les lieux et les époques. L’article tente d’éclaircir le panorama dans le cas du Chaco bolivien, tout en introduisant un troisième terme générique qui est celui de Ñanaigua ou “sauvages”, et en présentant des données historiques inédites sur les différentes ethnies ainsi appelées au XIXe siècle. Entre los nombres de etnias y pueblos que pululan en las crónicas coloniales, los de tapii y tapiete han puesto a prueba muchos autores y fueron calificados de verdadero “enigma etnográfico”. Han dado lugar, en particular, a muchas confusiones en la literatura posterior, principalmente por no prestar atención a su sentido original y genérico: “esclavos” o “verdaderos esclavos”. Así, las etiquetas de tapii y tapiete han podido designar a diferentes etnias según los lugares y las épocas. El artículo intenta aclarar el panorama en el caso del Chaco boliviano, introduciendo un tercer término genérico que es el de ñanaigua o “salvaje”, y aportando datos históricos inéditos sobre las diferentes etnias así designadas en el siglo XIX. Among the many ethnonyms that proliferate throughout the colonial records, those of tapii and tapiete have challenged a number of scholars, and have even been deemed an “ethnographic enigma.” Largely due to ignorance of their original and generic meaning -“slaves” and “true slaves”- both have given rise to several confusions in subsequent literature. In fact, the labels tapii and tapiete

  2. Comportamiento del fuego en un pastizal del sitio ecológico ‘media loma’, región chaqueña occidental (Argentina

    Directory of Open Access Journals (Sweden)

    BRAVO, S

    2012-04-01

    Full Text Available ResumenEl comportamiento del fuego es uno de los componentes de la ecología del fenómeno y su caracterización es necesaria para su manejo y control. El objetivo de este trabajo fue caracterizar el comportamiento del fuego en un pastizal ubicado en el sitio ecológico ‘media loma’ ubicado en el Campo Experimental ´La María´, INTA EEA Santiago del Estero (28º 03’ S 64º 15’ E en una posición intermedia del paisaje, entre el bosque de dos quebrachos y la sabana. El fuego se aplicó en seis parcelas de dos sitios de estudio, estimándose la composición botánica, la carga de combustible fino y la densidad aparente del combustible en función de la altura en cada una de ellas. El comportamiento del fuego se caracterizó mediante la estimación de la velocidad de avance del frente de fuego y la longitud de llamas. Los datos obtenidos se analizaron mediante análisis de la varianza empleando ´sitio de estudio´ como variable independiente. Las correlaciones entre variables fueron evaluadas mediante el coeficiente de correlación de Kendall (τ. Aunque ubicados en un mismo sitio ecológico, los sitios de estudio presentaron dominancia diferencial de dos especies nativas, Trichloris pluriflora (E. Fournier y Pappophorum pappipherum (Lam. Kuntze. Las dos especies poseen diferente proporción de tallo y hoja en su biomasa aérea, diferencia que se reflejó en la carga de combustible fino y su densidad aparente (p > F = 0,0001 en ambos casos y en la velocidad de avance del frente de fuego (p >F = 0.0001. Esta última fue de 28 m*min-1 en el sitio de estudio 1, con dominancia de la primera especie; y 21 m*.min-1 en el sitio de estudio 2, con dominancia de la segunda, respectivamente. La longitud de llamas promedio fue de 3,5 m, pero superó los 6 m cuando participaron en la propagación del fuego especies arbustivas que poseen aceites esenciales y resinas en su follaje. Se observó correlación positiva y significativa (p F = 0,0001 in both cases and the forward rate of spread (p > F = 0.0001. The latter was 27,62 m*min-1 in study site 1, where the first species dominated; and 21 m*.min-1 in study site 2, where the second dominated, respectively. Average flame length was 3,5 m, but reached 6 m when volatile shrubs ignited and participated in the propagation of fire. Correlations among forward rate of spread and fuel load with bulk density was positive and significant (p < 0,0001, but was not significant in the case of flame length. Fires were of high intensity and move fast and need blacklines or other indirect measures for control.

  3. Significado estratigráfico y tectónico de los complejos de bloques resedimentados cambro-ordovicios de la Precordillera Occidental, Argentina

    Directory of Open Access Journals (Sweden)

    Vaccari, N. E.

    1992-12-01

    Full Text Available Rocks belonging to the Early Paleozoic Los Sombreros Formation crop out on the eastern flank of the Sierra de Yerba Loca, along the Río Jáchal section. This Formation consists of black shales and turbidites with interbedded limestone boulders near the base of the section, one of them up to 200 m long and 30 m thick. Boulders yield both early Cambrian trilobites and early Ordovician conodonts. Near the top, a thick sequence of dark grey marls and limestone contains an early Middle Cambrian trilobite fauna which is overlain by limestone and calcareous turbidites containing early Llanvirn graptolites and conodonts. On the basis of paleontological and sedimentological evidences this sequence can be interpreted as a series of submarine gravity slides interbedded within a dominantly turbiditic sequence. The Cambrian-early Ordovician precordilleran carbonate platform served as the source for much of the sediment which was redeposited on the slope. Then, deposition of the early Ordovician Los Sombreros Formation could be related to uplift and erosion of the platform margin and steeping of the slope during the late Arenig-early Llanvirn.En el flanco oriental de la Sierra de Yerba Loca, sobre el corte del río Jáchal, aflora una secuencia de edad paleozoica temprana correspondiente a los afloramientos más septentrionales de la Formación Los Sombreros. Esta unidad se compone de lutitas negras y turbiditas que contienen cerca de su base y hacia el techo horizontes de bloques calcáreos, algunos de enormes dimensiones -cerca de 30 m de espesor por más de 200 m de longitud- cuya fauna de trilobites y conodontos indica una edad Cámbrica y Ordovícica temprana. Hacia el techo de la sección está expuesta una potente secuencia de calcipelitas y calizas oscuras que contienen una fauna de trilobites del Cámbrico Medio basal, que es cubierta por brechas calcáreas y calciturbiditas portadoras de conodontos y graptolitos de edad llanvirniana temprana. Esta secuencia mesocámbrica es interpretada también como un bloque olistolítico. Sobre la base de las evidencias paleontológicas y sedimentológicas se interpreta que la Formación Los Sombreros se habría originado a partir de una serie de deslizamientos gravitacionales submarinos dentro de una secuencia dominantemente turbidítica. La plataforma cámbrica y eo-ordovícica precordillerana fue la fuente de la mayor parte de los sedimentos que fueron redepositados sobre el talud. La sedimentación de la Formación Los Sombreros sería el resultado de la flexura y erosión del borde de la plataforma carbonática asociado a un brusco aumento de la pendiente del talud durante el Arenigiano tardío-Llanvirniano temprano.

  4. NREL technical assistance to Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Lilienthal, P. [National Renewable Energy Lab., Golden, CO (United States)

    1997-12-01

    This paper describes assistance to Argentina from the National Renewable Energy Laboratory which has touched on four programs: tariff analysis for rural concessions programs; wind/diesel hybrid retrofits in Patagonia; small hybrid systems designs for rural schools; an assessment of wind resources. The paper expands briefly on the first two points.

  5. Ñuagapua (Chaco, Bolivia): Evidence for the latest occurrence of megafauna in association with human remains in South America

    Science.gov (United States)

    Coltorti, Mauro; Della Fazia, Jacopo; Paredes Rios, Freddy; Tito, Giuseppe

    2012-02-01

    Quebrada (stream) Ñuagapua, which is located in the Bolivian Chaco in the Andean foothill generates an alluvial fan many kilometres in length. Three major lithostratigraphic units characterise the sedimentary sequence in this region. The lower and upper parts are formed from predominantly sandy sediments that demonstrate rapid growth of the alluvial fan, associated with an intense erosion of barren slopes. The intermediate unit consists of forest soil that seals deep channels containing bones together with a forest association. The remains of a wooden plank, dated 140 yr BP, were found at the top of this soil, which laterally contains charcoals, ash layers and large charred trunks, sometimes in growth positions. Roots localised in this layer also sustain a number of very large still living trees. These findings are evidence of a recent phase of alluvial fan sedimentation resulting from slope erosion activated by forest clearing. The Chaco has been intensively settled for agricultural and pastoral purposes since the 18th century. The lower unit contains a hearth, scattered burnt bones, flint flakes and ceramic artefacts. Radiometric dating indicates a middle Holocene human occupation, between ca. 7.79 and 6.65 ka cal yr BP. We suggest that the sedimentary unit is associated with intense soil erosion processes triggered by early Neolithic deforestation. A sandy layer of the lower unit, slightly above the archaeological remains, contains transported bones of megafaunal elements that apparently represent the South American latest occurrence of some extinct taxa. The mammal association is highly heterogeneous, containing species living in aquatic, forest, prairie and savannah environments from a very specific layer that represents the almost simultaneous burial of animals killed slightly up-valley. This anomalous association is probably the result of human impact as opening the forest favoured the introduction of open environment fauna that had previously survived on

  6. Nivel de sustentabilidad en pequeñas explotaciones sojeras de la Provincia del Chaco: suelo agrícola

    Directory of Open Access Journals (Sweden)

    Susana G. de Gelman

    2013-11-01

    Full Text Available En el Chaco se conjugan, la importancia económica del cultivo de soja cuyo avance paulatino fue favorecido por múltiples factores externos e internos, con la significación social de las pequeñas empresas agrícolas predominantemente familiares. Sin embargo, la evaluación de su explotación sustentable avanzó a menor ritmo, involucrando varias disciplinas con un desarrollo dispar. Por ello, es objetivo del presente trabajo, describir las condiciones en las que se lleva a cabo la producción sojera y evaluar el grado de sustentabilidad de las pequeñas empresas del Chaco en lo atinente a la protección del suelo. Las decisiones metodológicas definieron un diseño no experimental, observacional, descriptivo, transversal y prospectivo, cuya recolección de datos se implementó con un cuestionario ad hoc. Los pequeños productores sojeros chaqueños fueron seleccionados como unidad de análisis, en razón de su importancia económico-social y alta vulnerabilidad. La muestra, integrada por 27 participantes, predominantemente de sexo masculino (92.59% con una edad promedio de 48.70 (DE = 12.91, resultaron escogidos en forma aleatoria de una población seleccionada de manera intencional y accidental. Los resultados obtenidos, indican conductas permanentes que, en general, propenden a la protección de los recursos naturales. Entre ellas: rotación de cultivos, siembra directa sobre rastrojos, semilla transgénica y monitoreo de plagas bajo asistencia técnica; debiendo fortalecerse el cuidado preventivo del suelo mediante: alternancia de actividades económicas, fertilización balanceada y estudios periódicos. Finalmente, se anhela que éste trabajo, contribuya a una explotación sustentable y con la comunidad científico-profesional involucrada.

  7. DENSIDAD Y ESTRUCTURA DE TALLAS DEL PEZ LEÓN PTEROIS VOLITANS (SCORPAENIDAE) EN EL CARIBE OCCIDENTAL INSULAR COLOMBIANO

    OpenAIRE

    González-Corredor, Juan David; Acero P, Arturo; García-Urueña, Rocío

    2016-01-01

    RESUMEN En los últimos años se ha reconocido la problemática causada por especies invasoras, consideradas el segundo causal de pérdida de diversidad después de la degradación del hábitat. El pez león (Pterois volitans), especie originaria del Pacífico occidental, fue visto por primera vez al sur de la Florida en 1985. A partir de 2000 se ha dispersado y establecido en la costa este de Estados Unidos, Bermudas, las Bahamas, y desde 2007 se ha expandido por el Caribe, registrándose en localidad...

  8. Comparison of the tropical floras of the Sierra la Madera and the Sierra Madre Occidental, Sonora, Mexico

    Science.gov (United States)

    Thomas R. Van Devender; Gertrudis Yanes-Arvayo; Ana Lilia Reina-Guerrero; Melissa Valenzuela-Yanez; Maria de la Paz Montanez-Armenta; Hugo Silva-Kurumiya

    2013-01-01

    The floras of the tropical vegetation in the Sky Island Sierra la Madera (SMA) near Moctezuma in northeastern Sonora (30°00’N 109°18’W) and the Yécora (YEC) area in the Sierra Madre Occidental (SMO) in eastern Sonora (28°25’N 109°15”W) were compared. The areas are 175 km apart. Tropical vegetation includes foothills thornscrub (FTS) in both areas and tropical deciduous...

  9. El picudo del algodonero en la Argentina: Principales resultados e implicancias de los estudios moleculares The cotton boll weevil in Argentina: Main results and implications of the molecular studies

    Directory of Open Access Journals (Sweden)

    Analía A. Lanteri

    2003-12-01

    Full Text Available Después de diez años del primer registro del picudo del algodonero, Anthonomus grandis Boheman (Coleoptera, Curculionidae, en la Argentina, el insecto ha llegado a la zona algodonera del Chaco. Los estudios moleculares realizados sobre poblaciones de la Argentina, Brasil y Paraguay, y posibles poblaciones fuente de EE.UU y México, han aportado información relevante para el control de la plaga. Se aplicaron las técnicas de RAPD (Polimorfismos del ADN Amplificados al Azar y de secuenciación de los genes mitocondriales de la Citocromo Oxidasa I y II, las cuales permitieron identificar dos linajes principales de picudos: a linajes con escasa o nula variabilidad medida en términos de heterocigosis y diversidad haplotípica, considerados colonizadores recientes, y asociados con ambientes xerófilos y cultivos de algodón (provincia de Formosa; b linajes con una elevada variabilidad y diversidad haplotípica, considerados ancestrales, y asociados con áreas de vegetación nativa de la selva misionera (Parque Nacional Iguazú. Se supone que ambos linajes tendrían diferentes orígenes, adaptaciones y preferencias de huéspedes, y que en este momento se estarían hidridando en zonas de ecotono. Se postula que el picudo se hallaría presente en América del Sur como consecuencia de una dispersión natural asociada principalmente con sus huéspedes silvestres de los géneros Gossypium y Cienfuegosia, probablemente desde el Pleistoceno. Por otra parte no se descarta la posibilidad de una o más introducciones desde EE.UU. hacia Brasil, mediante el comercio del algodón. Se destaca la importancia del cultivo extensivo del algodón, y de la deforestación y formación de corredores entre fragmentos de selva, para explicar la dispersión rápida de la plaga durante los últimos 20 años, en áreas algodoneras y/o no algodoneras pero afectadas por serios disturbios ambientales, como por ejemplo la provincia de Misiones.Ten years after the first record of

  10. Criterios de nuliparidad y de paridad en Lutzomyia townsendi (Ortiz, 1959 del occidente de Venezuela

    Directory of Open Access Journals (Sweden)

    Margarita Márquez

    1982-09-01

    Full Text Available Lutzomyia townsendi (Ortiz, 1959 es un flebótomo antropofílico con concordancia gonadotrófica, en las zonas endémicas de Leishmania brasiliensis y L. garnhami en el occidente de Venezuela. Mediante el estudio de hembras colonizadas en el laboratorio, nuliparas o paridas, de hembras silvestres alimentadas sobre voluntarios y de hembras silvestres mantenidas con sacarosa, se establecen criterios de nuliparidad con un 56,6% de confianza. En cambio, signos de paridad aparecen en un 82% de las hembras consideradas como tales. La digestión de un ingesta sanguínea inicia un ciclo gonadotrófico con oogénesis abortiva y acumulación de fosfolípidos en las células epiteliales del estómago y en las glândulas accesorias. La ovoposición completa produce un calix ovárico grueso e irregular con restos de oocitos abortivos y acumulación de pigmentos. Estos caracteres son suficientes para precisar un criterio de paridad. La presencia de fosfolípidos en el estómago y en las glândulas accesorias de hembras nulíparas es una indicación de ingesta incompleta de sangre.Lutzomyia townsendi (Ortiz, 1959 is the main anthropophilic sandfly in endemic places for Leishmania braziliensis and L. garnhami in Western Venezuela. The study of laboratory bred females, nulliparous or parous and, wild females fed on man as well as wild females maintained with sucrose, allowed to establish a criterion of nulliparity with 56.6% of confidence for those captured in field conditions. In the same wild females, parity can be assessed with 81.5% of confidence. After blood digestion of full-engorged females a gonotrophic cycle is completed. Abortive oogenesis and accumulation of phospholipids in midgut epitelial cells and into accessory glands are observed. The ovoposition produces a thick and irregular ovaric calix with rests of abortive oocytes and accumulation of a melanin-like black pigment. All these changes are enough for identification of a parous fly. The presence

  11. An investigation of sulfur concentrations in soils and pine needles in Chaco Culture National Historical Park, New Mexico

    International Nuclear Information System (INIS)

    Gladney, E.S.; Ferenbaugh, R.W.; Jones, E.A.; Bell, M.G.; Morgan, J.D.; Nelson, L.A.; Bowker, R.G.

    1993-03-01

    Sulfur measurements in different age groups of pinon pine needles and adjacent soil samples from ten sampling sites at Chaco Culture National Historical Park were determined using combustion elemental analysis and chromatographic techniques. The primary goal was to establish base-line levels for elemental sulfur in the Park. Sulfur levels in foliage and soils were evaluated using analysis of variance techniques. No significant differences were found in foliage sulfur concentrations among the 10 sampling sites; however, trees within sites were significantly different. Needles of different ages did not differ significantly in sulfur content. Average soil concentrations were low, approximately 30% of the average needle concentrations. Soil sulfur concentrations did not differ significantly among the 10 sampling sites; however, different depths in the soil had statistically different concentrations of sulfur. No statistical differences were evident in soils sampled at the four compass points (N,S,E,W) around each tree. These differences imply that large numbers of samples are needed to identify small effects from anthropogenic inputs of sulfur into the system or that the effects must be large relative to the differences among sampling sites and individual trees in order to be detected

  12. 87Sr/86Sr sourcing of ponderosa pine used in Anasazi great house construction at Chaco Canyon, New Mexico

    Science.gov (United States)

    Reynolds, Amanda C.; Betancourt, Julio L.; Quade, Jay; Patchett, P. Jonathan; Dean, Jeffery S.; Stein, John

    2005-01-01

    Previous analysis of 87Sr/86Sr ratios shows that 10th through 12th century Chaco Canyon was provisioned with plant materials that came from more than 75 km away. This includes (1) corn (Zea mays) grown on the eastern flanks of the Chuska Mountains and floodplain of the San Juan River to the west and north, and (2) spruce (Picea sp.) and fir (Abies sp.) beams from the crest of the Chuska and San Mateo Mountains to the west and south. Here, we extend 87Sr/86Sr analysis to ponderosa pine (Pinus ponderosa) prevalent in the architectural timber at three of the Chacoan great houses (Pueblo Bonito, Chetro Ketl, Pueblo del Arroyo). Like the architectural spruce and fir, much of the ponderosa matches the 87Sr/86Sr ratios of living trees in the Chuska Mountains. Many of the architectural ponderosa, however, have similar ratios to living trees in the La Plata and San Juan Mountains to the north and Lobo Mesa/Hosta Butte to the south. There are no systematic patterns in spruce/fir or ponderosa provenance by great house or time, suggesting the use of stockpiles from a few preferred sources. The multiple and distant sources for food and timber, now based on hundreds of isotopic values from modern and archeological samples, confirm conventional wisdom about the geographic scope of the larger Chacoan system. The complexity of this procurement warns against simple generalizations based on just one species, a single class of botanical artifact, or a few isotopic values.

  13. Evaluación del crecimiento y estado nutricional de aborígenes wichi de Chaco

    Directory of Open Access Journals (Sweden)

    Cesani Rossi, María Florencia

    2007-01-01

    Full Text Available El objetivo del presente estudio es evaluar el crecimiento de niños y adultos de siete comunidades Wichi del NE de Chaco. Se relevaron peso, talla, estatura sentado, perímetro braquial y pliegues tricipital y subescapular en 332 individuos de 2 a 60 años. Se calcularon estatura sentado relativa (ESR y áreas muscular (AM y adiposa (AA del brazo. Los datos fueron transformados a puntaje z utilizando las referencias NHANES I y NHANES II. Se tomó -2 z como punto de corte para determinar baja talla/edad (BT/E y bajo peso/talla (BP/T. Los valores z medios para peso, talla, ESR y perímetro braquial se ubicaron bajo la referencia (0>z>-3. Los z de pliegue tricipital y AA fueron similares a los de la referencia y los de pliegue subescapular superiores (0z>-1. La prevalencia de BT/E fue mayor que la de BP/T a partir de los 6 años (20% y 1% respectivamente. Sin embargo, entre los 2 y 6 años el BP/T duplico a la BT/E (47,4% y 21,1%, respectivamente. Los resultados obtenidos indican alteraciones del crecimiento y estado nutricional de estas comunidades y especialmente de los niños menores de 6 años.

  14. La Historia: ¿concepto y herramienta metodológica universal o prejuicio teórico occidental?

    Directory of Open Access Journals (Sweden)

    Maximiliano E. Korstanje

    2009-12-01

    Full Text Available El siguiente ensayo intenta resaltar el pensamiento de dos grandes investigadores y antropólogos del siglo XX, sobre la historia y el tiempo como formas analíticas, y discursivas propias de las Ciencias Sociales; Clifford Geertz y Eric Wolf continúan deslumbrándonos con sus reflexiones y consecuentemente, nos introducen, en un dilema de difícil solución ¿es la historia un concepto universal o sólo un prejuicio occidental?________________________ABSTRACT:The following essay tries to focus about the thesis of two great thinkers who written amid the XX century. The point is to know the relation between the History and Time as analytic and discursive issues along with Social Sciences; Clifford Geertz and Eric Wolf still go in dazzling with their reflections, and consequently they place upon the table a slippery matter. ¿Is the history an universal concept or just a mere occidental prejudice?  

  15. Nuclear Energy Stakeholders in Argentina

    International Nuclear Information System (INIS)

    Gadano, Julian

    2017-01-01

    Mr Gadano, Undersecretary for Nuclear Energy, Argentina spoke from the perspective of a country looking forward to becoming a member of the NEA. He reviewed the place of nuclear energy in his country's energy mix and called attention to its role in positively addressing the global challenges of climate change and energy security. Mr Gadano also described the federal system which governs Argentina. Drawing on his expertise as a lawmaker and nuclear regulator but also as an academic sociologist, he stressed that reaching agreement on siting initiatives for example requires a sustainable relation with stakeholders, including regional governments. This is important because in the end, 'the best project is the one you can finish'

  16. Public information activities in Argentina

    International Nuclear Information System (INIS)

    Espejo, Hector

    1998-01-01

    This is a presentation involving a description of the main guidelines and conditions under which nuclear activities have been performed in Argentina, both concerning the autonomous development for the peaceful use of nuclear energy and with regard to the way in which the community was informed of the attained levels. The particulars of each approach are shown as to delineate historical evolution as a function of the various stages of technological development. (author)

  17. The energy sector in Argentina

    International Nuclear Information System (INIS)

    2016-01-01

    This article first outlines that Argentina produces an important part of its hydrocarbon consumption and comment various aspects of this production: hydrocarbons are at the heart of the Argentinian energetic model; conventional hydrocarbon reserves are however decreasing; the public operator remains the main actor even though the market is opened to multinational companies. The article then describes the crisis faced by this energetic model: the energy balance is now a burden; the increasing unbalance between production and consumption can be explained by supply-related as well as demand-related factors; authorities must intervene on hydrocarbon prices and subsidize the oil price on the domestic market. It appears that the future for hydrocarbons in Argentina relies on non-conventional hydrocarbons. Bio-fuels, a key sector of the Argentinian economy, are a matter of trade dispute with the EU and the USA. Apart from hydroelectricity (some new projects are planned), renewable energies are very few developed in Argentina. Appendices propose a graph of the distribution of energy consumption among the different sources, a map indicating locations of the main exploited hydrocarbon deposits, a presentation of mechanisms implemented to subsidize hydrocarbon production

  18. Las narrativas de los pioneros. Construcción y trasmisión del conocimiento en la danza moderna argentina

    Directory of Open Access Journals (Sweden)

    Denise Osswald

    2010-08-01

    Full Text Available Partiendo de una variedad de materiales textuales, el trabajo propone analizar los discursos de bailarinas y coreógrafas de danza moderna, así como su participación en la escena artística argentina durante las décadas de 1940 y 1950. El estudio de las moralidades vinculadas a verbalizaciones sobre el cuerpo en movimiento y el cuerpo en escena en las narrativas de “las pioneras”, nos informa sobre la emergencia de modelos de feminidad alternativos al de la bailarina clásica y la mujer tradicional occidental. Se busca abordar antropológicamente el estudio de estos procesos, explorando los modos en que las personas construyen sus elecciones en determinados contextos y configuraciones de ideas, sentimientos y creencias. Fecha de recepción: 23 de marzo de 2010. Fecha de aceptación: 19 de julio de 2010.

  19. Las narrativas de los pioneros. Construcción y trasmisión del conocimiento en la danza moderna argentina

    Directory of Open Access Journals (Sweden)

    Denise Osswald

    2010-08-01

    Full Text Available Partiendo de una variedad de materiales textuales, el trabajo propone analizar los discursos de bailarinas y coreógrafas de danza moderna, así como su participación en la escena artística argentina durante las décadas de 1940 y 1950. El estudio de las moralidades vinculadas a verbalizaciones sobre el cuerpo en movimiento y el cuerpo en escena en las narrativas de “las pioneras”, nos informa sobre la emergencia de modelos de feminidad alternativos al de la bailarina clásica y la mujer tradicional occidental. Se busca abordar antropológicamente el estudio de estos procesos, explorando los modos en que las personas construyen sus elecciones en determinados contextos y configuraciones de ideas, sentimientos y creencias.

  20. El Chaco Seco medio siglo antes de la agricultura industrial: procesos de desestructuración de ecosistemas y sociedades rurales

    OpenAIRE

    Totino, Mariana; Morello, Jorge Helios

    2017-01-01

    La información utilizada proviene de censos realizados por el Plan de Estudios Fitoecológicos del Chaco Argentino (EFECHA), iniciado en 1965 en convenio entre el Centro de Estudios Fitoecológicos de Montpellier, del Centro Nacional de Investigación Científica (CNRS) de Francia y la Facultad de Ciencias Exactas y Naturales de la UBA, y concluido por el INTA en 1975. Las autoridades convocantes fueron el Dr. Rolando García, decano de la Facultad de Ciencias Exactas y Naturales de la UBA, el ...

  1. Los orígenes de la industria algodonera en el Territorio Nacional del Chaco. Instalación del desmotado y las aceiterías

    Directory of Open Access Journals (Sweden)

    ALICIA CARLINO

    2013-05-01

    Full Text Available El objetivo del presente trabajo es describir los inicios de la actividad algodonera en el Chaco, y los alcances logrados por las primeras fases de la industria local: el desmotado y las aceiterías. Explicar esta problemática obliga a abordar el origen del recurso, la evolución del régimen de tierras, la instalación del capital, la política crediticia, las políticas de fomento emprendidas, la comercialización, la crisis de 1926-27, y finalmente la culminación del proceso con la crisis mundial de 1929 y sus consecuencias sobre la producción local. Se enfatiza el hecho que ya desde sus cimientos se hizo evidente que la cade-na textil quedaría dividida geográficamente, y que el Chaco sólo podría desarrollar las fases menos complejas de esta rama, postergando la integración vertical que le hubiera permitido agregar valor y favorecer la superación de su condición de economía marginal. Abstract The aim of this paper is to describe the beginnings of the cotton activity in the province of Chaco, and the advancements accomplished by the first phases of the local oil factories and the ginning. To explain these processes determines to research the origin of the cotton cultivation, the evolution of the land regime, the investment of capital, the credit and stimulation policies, the trade, and finally, the conse-quences of the crisis of 1929 on the local activities. It is emphasized the fact that since the beginnings it was obvious the textile chain would be divided geographically, and that Chaco would only develop the less complex phases of it, delaying the vertical integration that would have allowed this province to add value to and favour the overcoming of its condition as a marginal economy.

  2. Observations on the use of tarantula burrows by the anurans Leptodactylus bufonius (Leptodactylidae and Rhinella major (Bufonidae in the Dry Chaco ecoregion of Bolivia

    Directory of Open Access Journals (Sweden)

    Christopher M. Schalk

    2014-06-01

    Full Text Available Some species of anurans have been observed utilizing burrows of other animals, such as rodents and tarantulas. Here we report the observations of two anuran species, Leptodactylus bufonius and Rhinella major, utilizing the burrows of tarantulas (Acanthoscurria sp.; Family Theraphosidae in the dry Chaco ecoregion of Bolivia. Both species of anurans never co-occurred with tarantulas in the burrows and used burrows that were wider in diameter and closer to breeding ponds as compared to the total available tarantula burrows in the area. These burrows may serve as refuges from predators, especially for conspicuous, calling males.

  3. Graben calderas of the Sierra Madre Occidental: The case of Guanajuato, central Mexico

    Science.gov (United States)

    Aguirre-Diaz, G. J.; Tristán-González, M.; Labarthe-Hernández, G.; Marti, J.

    2013-12-01

    The Sierra Madre Occidental (SMO) volcanic province is characterized by voluminous silicic ignimbrites that reach an accumulated thickness of 500 to 1500 m. A single ignimbrite can reach up to 350 m thick in its outflow facies. This ignimbrite sequence formed mostly within 38-23 Ma, building up a total estimated volume of ca. 580,000 km3 making the SMO the largest ignimbrite province of the world. We have showed that several and probably most of the SMO ignimbrites were erupted from fissures associated to Basin and Range fault systems or grabens (Geology, 2003), thus naming these volcano-tectonic structures as graben calderas (Caldera Volcanism book, Elsevier, 2008). Generally, the sequence observed in graben calderas include, from oldest to youngest, alluvial fan deposits combined with lacustrine deposits, pyroclastic surge deposits and minor volume ignimbrites, a large-volume ignimbrite that could be massive or made of successive layers, and sometimes silicic lava domes and/or mafic fissural lavas both with vents aligned with the graben trend. Fallout deposits, plinian or non-plinian, are not observed in the sequence. Thus, onset of caldera collapse represented by the major ignimbrite must occur just after deposition of continental sediments within the graben domain. A similar volcano-tectonic development is observed in pull-apart grabens. Therefore, extensional or transtensional tectonics, before and during caldera collapse, and the emplacement of a subgraben shallow silicic magma chamber are the necessary conditions for the development of graben calderas. We describe here the case of the Guanajuato graben caldera, located in the central part of Mexico and in the southeastern portion of the SMO volcanic province. The caldera is part of the economically important mining district of Guanajuato, with 28 silver mines, some active since the 16th century. The caldera structure, a rectangle of 10 x 16 km, was controlled by NW and NE regional fault systems. Most ore

  4. Natural Distribution of Parasitoids of Larvae of the Fall Armyworm, Spodoptera frugiperda, in Argentina

    Science.gov (United States)

    Gabriela Murúa, M.; Molina-Ochoa, Jaime; Fidalgo, Patricio

    2009-01-01

    To develop a better understanding of the natural distribution of the fall armyworm, Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae), and to update the knowledge of the incidence of its complex of parasitoids. S. frugiperda, samplings in whorl-stage corn were carried out in provinces of Argentina from 1999 to 2003. S. frugiperda larvae were collected from corn in localities of the provinces of Tucumán, Salta, Jujuy, Santiago del Estero, La Rioja, Córdoba, San Luis, Chaco and Misiones. In each locality 30 corn plants were sampled and only larvae located in those plants were collected. The parasitoids that emerged from S. frugiperda larvae were identified and counted. The abundance of the parasitoids and the parasitism rate were estimated. The S. frugiperda parasitoids collected were Campoletis grioti (Blanchard) (Hymenoptera: Ichneumonidae), Chelonus insularis (Cresson) (Hymenoptera: Braconidae), Archytas marmoratus (Townsend) (Diptera Tachinidae) and/or A. incertus (Macquart), Ophion sp. (Hymenoptera: Ichneumonidae), Euplectrus platyhypenae Howard (Hymenoptera: Eulophidae), and Incamyia chilensis (Aldrich) (Diptera Tachinidae). C. grioti was the most abundant and frequent during the five-year survey. Similar diversity of parasitoids was obtained in all the provinces, with the exception of I. chilensis and E. platyhypenae that were recovered only in the province of Salta. In the Northwestern region, in Tucumán, C. grioti and species of Archytas were the most abundant and frequent parasitoids. On the contrary, in Salta and Jujuy Ch. insularis was the parasitoid most abundant and frequently recovered. The parasitism rate obtained in Tucumán, Salta and Jujuy provinces were 21.96%, 17.87% and 6.63% respectively with an average of 18.93%. These results demonstrate that hymenopteran and dipteran parasitoids of S. frugiperda occurred differentially throughout the Argentinian provinces and played an important role on the natural control of the S. frugiperda larval

  5. The ecology of anemia: Anemia prevalence and correlated factors in adult indigenous women in Argentina.

    Science.gov (United States)

    Goetz, Laura G; Valeggia, Claudia

    2017-05-06

    The Toba/Qom of Namqom are an indigenous community native to the Gran Chaco region of northern Argentina. Historically seminomadic foragers, the diet of peri-urban community members has rapidly changed from high-protein, high-fiber to hypercaloric, processed. This study aims to understand the impact of this nutritional transition on aspects of women's health by exploring the relationship between prevalence of anemia and current diet composition, place of birth, and reproductive history. We measured the capillary hemoglobin (Hb) levels of 153 adult women. Each participant was also given two interviews characterizing reproductive history and a 24-hour food recall. The average Hb level was 12.6 g/dL (range 5.8-15.7 g/dL). In our sample, 28% of participants were anemic and 31% were borderline anemic. Iron and vitamin C consumption were negatively associated with Hb levels. Body mass index was marginally associated with Hb levels. Being born in a peri-urban setting, a proxy for early Westernized diet was associated with higher risk of anemia, suggesting developmental experience may play a role. Pregnant and lactating women had lower Hb levels than menstruating and menopausal women. Age, height, parity, and age at first pregnancy were not found to be statistically significant predictors of anemia. Iron deficiency represents a serious health concern for women, particularly pregnant ones. Our results suggest that both past and current nutritional ecology variables may be associated with the risk of anemia. These findings inform public health interventions, since reproductive history may be more difficult to modify than current diet. © 2017 Wiley Periodicals, Inc.

  6. Status and conservation of old-growth forests and endemic birds in the pine-oak zone of the Sierra Madre Occidental, Mexico

    NARCIS (Netherlands)

    Lammertink, J.M.; Rojas-Tomé, J.A.; Casillas-Orona, F.M.; Otto, R.L.

    1996-01-01

    The pine-oak forests of the Sierra Madre Occidental, a mountain range in NW Mexico, have recently been recognized as an area of high endemism and biodiversity. Selective logging threatens three bird species endemic to this habitat, who depend on standing dead trees (snags). This report is based on

  7. Virus del Nilo Occidental: Lo que debe saber - Agosto de 2012 (West Nile Virus: What You Need to Know Now - August 2012)

    Centers for Disease Control (CDC) Podcasts

    2012-08-21

    Este podcast nombra los estados en donde se han notificado la mayoría de casos del virus del Nilo Occidental y explica la manera en que las personas se pueden proteger contra ese virus.  Created: 8/21/2012 by .   Date Released: 8/22/2012.

  8. From biophysical to social-ecological trade-offs: integrating biodiversity conservation and agricultural production in the Argentine Dry Chaco

    Directory of Open Access Journals (Sweden)

    Matias E. Mastrangelo

    2015-03-01

    Full Text Available Agricultural intensification in rural areas of developing countries compromises the provision of ecosystem services. Social conflict arises among landholders with different preferences for ecosystem services and land-use practices in agricultural frontiers of the Argentine Dry Chaco. We explored policy and management options by assessing the actual and potential outcomes of alternative land-use systems and scenarios. We first constructed the efficiency frontier for avian habitat and agricultural productivity to analyze the combinations of ecosystem services that can be achieved under different land-use intensities. A nonlinear, concave efficiency frontier indicated opportunities to achieve large gains for production with small losses for conservation, for instance, by transitioning from low- to intermediate-intensity systems. Second, we projected production and conservation outcomes, which can be achieved through the implementation of five alternative policy options. The land sharing with conservation scenario, 70% of the landscape covered by intermediate-intensity systems and 30% by undisturbed forests, yielded the higher combination of avian habitat and agricultural productivity. Third, we constructed indifference curves of three landholder groups, i.e., preproductivist, multifunctional, and productivist, by assessing their intentions (proxies for preferences to conserve and convert remnant forests in their landholdings. Multifunctional landholders showed balanced preferences for conserving and converting forests in their landholdings, and maintaining intermediate-intensity systems. A general willingness to conserve forests coexisted in preproductivist landholders with the intention to clear some portions of the landholding and intensify landuse, indicating the potential of an endogenously motivated transition toward a multifunctional regime. Such transition may increase their productivity by 35-65% without compromising avian habitat

  9. Reproductive biology and pollination ecology of Triplaris gardneriana (Polygonaceae): a case of ambophily in the Brazilian Chaco.

    Science.gov (United States)

    Custodio, T; Comtois, P; Araujo, A C

    2017-07-01

    Triplaris gardneriana (Polygonaceae) is a dioecious pioneer tree reported as insect-pollinated, despite possessing traits related to anemophily. Here, we analyse the possible roles of insects and wind on the pollination of this species to establish whether the species is ambophilous. We carried out observations of floral biology, as well as on the frequency and behaviour of pollinators visiting flowers in a population of T. gardneriana in the Chaco vegetation of Brazil. We conducted experimental pollinations to determine the maternal fertility of female plants and whether they were pollen-limited, and we also conducted aerobiological experiments to provide evidence of how environmental factors influence atmospheric pollen dispersal. The population comprised an area of approximately 152.000 m 2 and was composed of 603 female and 426 male plants (sex ratio = 0.59:0.41). We observed 48 species of insects visiting flowers of T. gardneriana, of which the bees Scaptotrigona depilis and Apis mellifera scutellata were the most effective pollinators. We recorded pollen grains dispersed by wind on 74% of the glass slides placed on females, located at different distances (1-10 m) from male plants. Airborne pollen concentration was negatively correlated with relative humidity and positively correlated with temperature. Our observations and experimental results provide the first evidence that T. gardneriana is an ambophilous species, with pollen dispersal resulting from both animal and wind pollination. This mixed pollination strategy may be adaptive in T. gardneriana providing reproductive assurance during colonisation of sites with different biotic and abiotic conditions. © 2017 German Botanical Society and The Royal Botanical Society of the Netherlands.

  10. Relación carbono-nitrógeno en suelos de sistemas silvopastoriles del Chaco paraguayo

    Directory of Open Access Journals (Sweden)

    Cynthia Gamarra

    2018-03-01

    Full Text Available El sistema silvopastoril permite que la producción ganadera sea más sustentable, porque la interacción entre sus componentes aporta beneficios al suelo, a la pastura, al ganado y a los árboles; además de, un aumento en la productividad y la diversificación de la producción. Para conocer las características de dichos sistemas, se llevó a cabo un estudio en propiedades privadas ubicadas en el Chaco Paraguayo, donde se instalaron ocho parcelas permanentes de 1 ha cada una, en las que se midieron todos los individuos de Prosopis spp. (algarrobo, se identificaron y extrajeron muestras de pastura de subparcelas situadas bajo la copa de los árboles y fuera de ella para comparar su biomasa; también se obtuvieron muestras de suelo en las mismas condiciones, a dos profundidades: de 0 a 10 cm y de 10 a 30 cm, con el propósito de comparar el contenido de materia orgánica y la Relación Carbono/Nitrógeno (C/N. El componente arbóreo estaba integrado por Prosopis alba (algarrobo blanco y Prosopis nigra (algarrobo negro asociados a pastura cultivada compuesta en forma mayoritaria por Panicum maximum cv Gatton panic (Gatton panic, Digitaria decumbens (pasto pangola y Cenchrus ciliaris (pasto buffel. La presencia de los algarrobos influyó sobre la biomasa de la pastura, pues sus registros fueron mayores bajo las copas que fuera de estas. La materia orgánica en el suelo no presentó diferencias significativas entre condición de sol y de sombra, pero sí al variar la profundidad; en cambio, la Relación C/N no varió en ninguna de las condiciones.

  11. Boll weevil invasion process in Argentina

    Science.gov (United States)

    The boll weevil, Anthonomus grandis grandis Boheman, is the most destructive cotton pest in the Western Hemisphere. In 1993, the pest was reported in Argentina, and in 1994 boll weevils were captured in cotton fields in the Formosa Province on the border between Argentina and Paraguay. The pest ha...

  12. Communications received from Argentina and Brazil

    International Nuclear Information System (INIS)

    1989-01-01

    The document reproduces the Joint Statement on Nuclear Policy signed by the President of Argentina and the President of Brazil on 29 November 1988 at Ezeiza, Argentina, concerning the decision of the two countries to undertake a joint fast breeder reactor project

  13. Mida õpetab Argentina finantskriis? / Karsten Staehr

    Index Scriptorium Estoniae

    Staehr, Karsten, 1962-

    2002-01-01

    Norra majandusanalüütik kirjeldab Argentina majanduspoliitikat, analüüsib tehtud vigu ning hoiatab avatud majandusega Eestit võimalike tulevaste välisshokkide eest. Diagramm: SKP kasv ja üleüldine riigieelarve tasakaal 1991-2001 Argentinas

  14. LOS VIEJOS ANTECEDENTES ANDALUSÍES DE LA INTERTEXTUALIDAD Y SU POSIBLE INFLUENCIA EN EL OCCIDENTE CRISTIANO

    Directory of Open Access Journals (Sweden)

    Kevin Perromat Agustín

    2014-10-01

    Full Text Available La literatura arábiga medieval posee la singularidad de haber elaborado una teoría considerable sobre la intertextualidad y los límites de la apropiación e imitación poéticas. En este contexto, los tratadistas árabes consideraron simultánea y paradojicamente el plagio (sariqa como infracción de las normas literarias y como uno más de los recursos literarios legítimos del poeta. Por el momento se desconoce su posible ascendiente en las poéticas medievales del Occidente cristiano, aunque, a la luz de determinadas evidencias, no es descartable una influencia tangencial o implícita. Por este motivo, el estudio de los autores de al-Ándalus, así como de otros territorios fronterizos, reviste un gran interés en tanto escenarios privilegiados de estos intercambios textuales.

  15. Factors Controlling Pre-Columbian and Early Historic Maize Productivity in the American Southwest, Part 2: The Chaco Halo, Mesa Verde, Pajarito Plateau/Bandelier, and Zuni Archaeological Regions

    Science.gov (United States)

    Benson, L.V.

    2011-01-01

    Chemical and nutrient analyses of 471 soil samples from 161 sites within four archaeological regions (Pajarito Plateau/Bandelier, Zuni, Mesa Verde, and the Chaco Halo) were combined with historical climate data in order to evaluate the agricultural productivity of each region. In addition, maize productivity and field-life calculations were performed using organic-nitrogen (N) values from the upper 50 cm of soil in each region and a range (1-3%/year) of N-mineralization rates. The endmember values of this range were assumed representative of dry and wet climate states. With respect to precipitation and heat, the Pajarito Plateau area has excellent agricultural potential; the agricultural potentials of the Zuni and Mesa Verde regions are good; and the agricultural potential of the Chaco Halo is poor. Calculations of N mineralization and field life indicate that Morfield Valley in Mesa Verde should be able to provide 10 bu/ac of maize for decades (without the addition of N) when organic N-mineralization rates exceed 2%. Productivity and field-life potential decrease in the following order: Zuni, Mesa Verde, Bandelier, Chaco Halo. The Chaco Halo is very unproductive; e. g., 10 bushels per acre can be achieved within the Halo only from soils having the highest organic N concentration (third quartile) and which undergo the highest rate (3%) of N mineralization. ?? 2010 US Government.

  16. Greenstone: uso actual en Argentina

    Directory of Open Access Journals (Sweden)

    Marcela Fushimi

    2018-04-01

    Full Text Available Este trabajo presenta las características e historia del software para crear y gestionar bibliotecas digitales Greenstone, desarrollado inicialmente por la Universidad de Waikato, Nueva Zelandia en 1997. En primer lugar, se describe la comunidad de usuarios a nivel global, focalizando en el uso actual que el software ha alcanzado en Argentina: la cantidad de implementaciones disponibles, su evolución, el tipo, tamaño y variedad de los desarrollos existentes, así como su aplicación a la gestión de repositorios digitales de ciencia y tecnología en el ámbito de las instituciones científicas, tecnológicas y de educación superior en Argentina. En segundo lugar, se detallan las acciones llevadas a cabo a partir de la creación del Centro Nacional de Promoción de Greenstone en Argentina en 2009. Datos recabados en encuestas realizadas permitieron observar que las razones predominantes para elegir esta plataforma fueron, entre otras, su facilidad de instalación y configuración, su bajo nivel de requerimiento tecnológico, la generalizada escasez de recursos humanos dedicados a esta actividad, y la complejidad que presentaban los softwares alternativos existentes en ese momento. A lo largo de estos 8 años, tanto los repositorios digitales como los sistemas que los soportan evolucionaron drásticamente, modificando el escenario actual. Paralelamente, en 2016 la nueva versión mayor de Greenstone implementó una reingeniería completa del software para su adaptación a las tecnologías en uso: XML, XSLT, Web-services y Java. Como consecuencia de esto, la comunidad de desarrollo local se plantea nuevos desafíos para la migración de las bibliotecas digitales y repositorios implementados con versiones anteriores.

  17. Bioceres: AG Biotechnology from Argentina

    Directory of Open Access Journals (Sweden)

    Roberto Feeney

    2016-04-01

    Full Text Available In this case we present a business decision-making situation in which the CEO of an Argentine Ag Biotech company, Bioceres, has to decide the best way to commercialize a new drought-tolerant transgenic technology. The company was founded by twenty three farmers, who shared a common dream that Argentina could become a benchmark in the development of Ag biotechnology. The case has strategic and financial implications, as well as decision-making situation involving a joint venture with an American biotechnology company. It also introduces to discussion the business models of Ag biotechnology companies in developing countries.

  18. Soybean biomass produced in Argentina

    DEFF Research Database (Denmark)

    Semino, Stella Maris; Paul, Helena; Tomei, Julia

    2009-01-01

    Soybean biomass for biodiesel, produced in Argentina amongst other places, is considered by some to reduce greenhouse gas emissions and mitigate climate change when compared with fossil fuel. To ensure that the production of biofuels is ‘sustainable', EU institutions and national governments...... are currently designing certification schemes for the sustainable production of biomass. This paper questions the validity of proposed environmental standards, using the production of Argentine soybean as a case study. The production of soybean production is associated with profound environmental impacts...

  19. Las masacres del olvido: Napalpí y Rincón Bomba en la genealogía del genocidio y el racismo de estado en la Argentina As massacres esquecidas: Napalpí e Rincón Bomba na genealogia do genocídio e o racismo de Estado em Argentina The massacres of the oblivion: Napalpí and Rincon Bomba in the genealogy of the genocide and racism of state in Argentine

    Directory of Open Access Journals (Sweden)

    Héctor Hugo Trinchero

    2009-06-01

    Full Text Available Resumen El objetivo del artículo es intentar trazar una genealogía de algunas prácticas genocidas en la Argentina y, de esta manera, poder comprender las formas recurrentes de masacres sobre población indígena y no indígena producidas por el Estado nacional argentino en su proceso de formación neo-colonial. Específicamente, se detendrá en dos casos que sucedieron ya bien entrado el siglo pasado, es decir, muy a posteriori de la pretendida solución final del General Roca en el sur y las campañas de exterminio desarrolladas por el ejército argentino en el norte y muy anteriores al genocidio de la última dictadura militar. Se trata de la masacre de Napalpí, llevada a cabo en el año 1924 en la provincia de Chaco, y la masacre denominada "Rincón Bomba", perpetrada en el año 1947 en la provincia de Formosa. Ambas masacres de pueblos originarios están siendo revisadas recientemente como un necesario ejercicio de la verdad y la memoria.O objetivo desse artigo é tentar fazer uma genealogia de algumas praticas genocidas em Argentina e, desse maneira, conseguir compreender as formas repetidas das massacres da população indígena e não indígena provocadas pelo Estado nacional Argentino no processo de formação neo-colonial. Especificamente, se analisarão dois casos que aconteceram bem começado o século passado, ou seja, bem depois da pretendida solução final proposta pelo General Roca no sul do pais e as campanhas de extermínio desenvolvidas pelo exercito Argentino no Norte e muito anteriores ao genocídio da ultima ditadura militar. O artigo é sobre a massacre de Napalpí -acontecida no ano 1924 na Província do Chaco-, e a massacre denominada "Rincón Bomba"- acontecida no ano 1947 na Província de Formosa-. As duas massacres de Povos Originários estão sendo revisadas em tempo recente como um necessário exercício de memória e de verdade.The aim of this article is to draw up a genealogy of certain genocide practices in

  20. Education in acoustics in Argentina

    Science.gov (United States)

    Miyara, Federico

    2002-11-01

    Over the last decades, education in acoustics (EA) in Argentina has experienced ups and downs due to economic and political issues interfering with long term projects. Unlike other countries, like Chile, where EA has reached maturity in spite of the acoustical industry having shown little development, Argentina has several well-established manufacturers of acoustic materials and equipment but no specific career with a major in acoustics. At the university level, acoustics is taught as a complementary--often elective--course for careers such as architecture, communication engineering, or music. In spite of this there are several research centers with programs covering environmental and community noise, effects of noise on man, acoustic signal processing, musical acoustics and acoustic emission, and several national and international meetings are held each year in which results are communicated and discussed. Several books on a variety of topics such as sound system, architectural acoustics, and noise control have been published as well. Another chapter in EA is technical and vocational education, ranging between secondary and postsecondary levels, with technical training on sound system operation or design. Over the last years there have been several attempts to implement master degrees in acoustics or audio engineering, with little or no success.

  1. Sistema de salud de Argentina The health system of Argentina

    Directory of Open Access Journals (Sweden)

    Mariana Belló

    2011-01-01

    Full Text Available En este artículo se describe el sistema de salud de Argentina, que está compuesto por tres sectores: público, de seguridad social y privado. El sector público está integrado por los ministerios nacional y provincial, y la red de hospitales y centros de salud públicos que prestan atención gratuita a toda persona que lo demande, fundamentalmente a personas sin seguridad social y sin capacidad de pago. Se financia con recursos fiscales y recibe pagos ocasionales de parte del sistema de seguridad social cuando atiende a sus afiliados. El sector del seguro social obligatorio está organizado en torno a las Obras Sociales (OS, que aseguran y prestan servicios a los trabajadores y sus familias. La mayoría de las OS operan a través de contratos con prestadores privados y se financian con contribuciones de los trabajadores y patronales. El sector privado está conformado por profesionales de la salud y establecimientos que atienden a demandantes individuales, a los beneficiarios de las OS y de los seguros privados. Este sector también incluye entidades de seguro voluntario llamadas Empresas de Medicina Prepaga que se financian sobre todo con primas que pagan las familias y/o las empresas. En este trabajo también se describen las innovaciones recientes en el sistema de salud, incluyendo el Programa Remediar.This paper describes the health system of Argentina.This system has three sectors: public, social security and private.The public sector includes the national and provincial ministries as well as the network of public hospitals and primary health care units which provide care to the poor and uninsured population. This sector is financed with taxes and payments made by social security beneficiaries that use public health care facilities. The social security sector or Obras Sociales (OS covers all workers of the formal economy and their families. Most OS operate through contracts with private providers and are financed with payroll

  2. Argentina to fully privatize state owned YPF

    International Nuclear Information System (INIS)

    Anon.

    1992-01-01

    Argentina's Congress has voted to fully privatize state petroleum company Yacimientos Petroliferos Fiscales (YPF), a move the government expects to net at least $8 billion. Despite some political opposition, the vote was 119-10 in favor, with one abstention and opposition party members refusing to participate in the vote. Argentina's President Carlos Menem had threatened to authorize YPF privatization by decree if there was no quorum for a vote. YPF is responsible for 40% of Argentina's oil production. The country h as been self-sufficient in crude since 1982. Current production is 563,472 b/d, and proved reserves of oil and gas are valued at $7 billion

  3. Usando patrones de biodiversidad para la evaluación y diseño de áreas protegidas: las serpientes de la provincia de Santa Fe (Argentina como ejemplo Using biodiversity patterns for assessment and design protected areas: snakes of Santa Fe province (Argentina as example

    Directory of Open Access Journals (Sweden)

    VANESA ARZAMENDIA

    2004-06-01

    de los valores de prioridad de conservación, áreas de endemismos, similitud y complementariedad indicó que poblaciones de todos los taxones de serpientes de Santa Fe pueden ser conservadas si se protegen adecuadamente tres celdas ubicadas en los extremos noroeste (Chaco Seco, noreste (Chaco Húmedo-valle del Paraná y sureste (Pampeana. Las dos primeras no tienen áreas protegidas, y la tercera celda tiene una pequeña reserva, una isla en el río Paraná, que no contiene ecosistemas pampeanos. El Chaco Seco no tiene reservas presentando la mayor deficiencia de áreas protegidas. La superficie de áreas protegidas es insuficiente y no están adecuadamente distribuidas en relación con los patrones de biodiversidad debido a la falta de criterios científicos para su selección. Este problema, sumado a graves deficiencias de implementación, hacen poco efectivo el sistema de reservas de Santa Fe para proteger a las serpientes y posiblemente a la biodiversidad provincialSnakes are usually persecuted by people and few are considered in biodiversity conservation strategies, being protected areas essential for their preservation. We analysed species richness and biogeographical patterns of the snakes of Santa Fe province, Argentina, to prioritise areas for their conservation and to assess if the existent reserves coincide with these areas. Species richness and distributional patterns were established from 2,532 specimens, obtained on field samplings and revision of collections, supplemented with bibliographical records and a regional database of 8,000 specimens. Areas of endemism were determined and compared with phytogeographical divisions. Santa Fe was divided in 16 cells of one degree of latitude and longitude, to compare species richness, similarity and complementarity. We applied a method to prioritise cells for conservation according to species richness and a conservative value of each taxa. Species richness in Santa Fe greatly increased with decreasing latitude

  4. The influence of the 220 kv and 66 kv power electric systems and the subsystem of their servitude range in the 'chaco central' ecosystem in Paraguay; Relacion de tendido electrico de 220 kV y 66kV en el ecosistema del chaco central del Paraguay y el subsistema de su franja de servidumbre

    Energy Technology Data Exchange (ETDEWEB)

    Acosta E, Hugo Cesar [ANDE - Administracion Nacional de Electricidad, Assuncion (Paraguay)

    2001-07-01

    According to the report from DOP/EL, in a medium period of time it has been registered nine disconnections of the 66 kv power transmission line located in the Chaco zone occurred in the nocturnal period. Those disconnections affected negatively the milky processes of Colinas Menonitas, deteriorating more than 20,000 liters of milk for each cut of the electric energy service. DMA/IM has accomplished a investigation job together with DOM/FO and has found the main reasons for those disconnections, so based on them it has recommended possible solutions related to the problem.

  5. Measured radon inside housings the Republic Argentina

    International Nuclear Information System (INIS)

    Canoba, A.; Arnaud, M.; Lopez, F.; Oliveira, A.A.

    1998-01-01

    They have been measured the radon concentration in houses in different city's in Argentina Republic. For they were used it as method mensuration detectors appearances nuclear detecting electrets and detectors based on the adsorption radon in activated carbon

  6. Nuclear Data in Argentina (1992 -1993)

    International Nuclear Information System (INIS)

    Ricabarra, G. H.

    1993-03-01

    A progress report of nuclear data research in Argentina is given for the years 1992/1993, including the WIMS nuclear data library update project, and measurements and evaluations of selected neutron induced nuclear reactions. (author)

  7. Julio Sanguily y Garritte (1846-1906 y los alzamientos de febrero de 1895 en el occidente de Cuba

    Directory of Open Access Journals (Sweden)

    de Paz Sánchez, Manuel

    1996-08-01

    Full Text Available The subject of the failed uprisings of February, 1895 in Cuba´s West has been a controversial matter among historians for almonst as long ago as the events themselves. A number of Cuban scholars, as well as the accounts of people who participated in the uprisings, have not helped to the search for the truth. The reasons for this controversy are very much related to the hypothetical relevance of an all-out rebellion emerging just a short distance from Cuba´s capital, which would have accelerated the independence movement and changed the conflict's outcome. While in a previous work on Cuban banditry I insisted on the critical importance of these uprisings, in this paper I intend to call attention to new data on them, particularly on their most relevant aspect: the role played by the Cuban general Julio Sanguily y Garritte. He has been blamed for the failure of the western revolt, on account of the death of rebel officer -and former social bandit- Manuel García Ponce.

    El tema de los fracasados alzamientos insurreccionales del occidente cubano, en febrero de 1895, ha sido objeto de un largo debate historiográfico desde pocos años después de su acaecimiento. Diversos estudiosos cubanos, así como los testimonios de los propios protagonistas de los hechos han contribuido, en numerosas ocasiones, a hacer aún más difícil la búsqueda de la verdad. Las razones de esta polémica están profundamente relacionadas con la hipotética relevancia de un levantamiento en toda regla a escasos kilómetros de la capital cubana, lo que, en teoría, hubiera acelerado el proceso emancipador y cambiado, de diversas maneras, el devenir de la contienda que se saldó con la pérdida de Cuba para España. En nuestro trabajo sobre el bandolerismo cubano (1, insistimos en la importancia crucial de tales acontecimientos y, en esta ocasión, nos proponemos aportar nuevos datos sobre los hechos mencionados, particularmente sobre su aspecto más relevante: el

  8. Transnational Crime Fictions and Argentina's Criminal State

    OpenAIRE

    Caballero, Juan

    2013-01-01

    My dissertation, titled "Transnational Crime Fictions and Argentina's Criminal State," proposes a new understanding of the dictatorship novels of Ricardo Piglia, Juan José Saer, and Manuel Puig grounded in their shared appropriation from popular crime fiction. Across the 1940's, 50's, and 60's, a wide range of popular crime fiction was translated, written, theorized, printed and reprinted in Argentina, and these popular genres grew steadily in readership, visibility, and cultural legitimacy....

  9. Update on women in physics in Argentina

    Science.gov (United States)

    Brudny, Vera; Lagorio, Cecilia; Frechero, Marisa; Tamarit, Francisco

    2013-03-01

    Data collected 10 years ago in Argentina concluded that women in physics were underrepresented in many instances and that a "crystal ceiling" was firmly in place. We have collected updated data for several indicators and compared them with those obtained 10 years ago. Although there is not a clear conclusion to be drawn from this comparison, we try to explain the results within the framework of the changes in scientific policies in Argentina.

  10. Update on women in physics in Argentina

    OpenAIRE

    Brudny, Vera Leonor; Lagorio, Cecilia; Frechero, Marisa Alejandra; Tamarit, Francisco

    2016-01-01

    Data collected 10 years ago in Argentina concluded that women in physics were underrepresented in many instances and that a “crystal ceiling” was firmly in place. We have collected updated data for several indicators and compared them with those obtained 10 years ago. Although there is not a clear conclusion to be drawn from this comparison, we try to explain the results within the framework of the changes in scientific policies in Argentina. Fil: Brudny, Vera Leonor. Universidad de Buenos...

  11. China, Argentina agree to further strategic ties

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    According to Xinhua,China and Argentina have agreed to further enhance mutual trust and their strategic partnership as the two emerging economies are playing an increasingly important role in the world arena.“China will work with Argentina to strengthen strategic mutual trust,expand cooperation and coordination within multilateral frameworks in order to promote bilateral ties and benefit the two peoples,” Vice President Xi Jinping told Argentine Foreign Minister Hector Timerman on September 9.

  12. Poverty and Health in Argentina

    Directory of Open Access Journals (Sweden)

    Maria Alejandra Silva

    2009-06-01

    Full Text Available This article examines health conditions in the rural areas of Central Argentina, the country’s main region for soy-bean production and export. Health conditions are analyzed through the concepts of emerging and re-emerging diseases in a context of increasing poverty. Data on poverty and health was obtained from both primary sources (trade union, government officials, rural doctors and the South Watch/FA/FODEPAL/UNR working group and secondary sources (IPEC/INDEC, IDESA, Consultora Equis, the Argentine Ministry of Employment, ILO, the Ministry of Health, the Ministry of the Environment, toxicology centers and rural doctors. Analysis of rural health conditions gives cause for concern. There is evidence of deterioration in the social determinants of health such as an increase in rural and urban poverty associated with informal employment and child labor. At the same time lack of government epidemiological and toxicological data appears to hide or distort the reality of health conditions.

  13. An Energy Overview of Argentina

    International Nuclear Information System (INIS)

    2003-01-01

    The DOE Office of Fossil Energy is maintaining a web site that is meant to provide useful business- and energy-related information about countries and regions of the world for exporters, project developers, and researchers. The site consists of more than 130 country pages (organized into seven different world regions), with each country page having its own set of links to information sources about that country. There are also more than 30 Country Energy Overviews at the web site -- each of these is a comprehensive review of a specific country's entire energy situation, including sections on Energy Policy, Oil, Natural Gas, Coal, Hydroelectric/Renewables, Nuclear Power, Energy Transmission Infrastructure, Electricity, Electric Industry Overview, Environmental Activities, Privatization, Trade, and Economic Situation. The specific country highlighted in this Country Energy Overview is Argentina. The site is designed to be dynamic. Updates to the overviews will be made as need and resources permit

  14. Nuclear security standard: Argentina approach

    International Nuclear Information System (INIS)

    Bonet Duran, Stella M.; Rodriguez, Carlos E.; Menossi, Sergio A.; Serdeiro, Nelida H.

    2007-01-01

    Argentina has a comprehensive regulatory system designed to assure the security and safety of radioactive sources, which has been in place for more than fifty years. In 1989 the Radiation Protection and Nuclear Safety branch of the National Atomic Energy Commission created the 'Council of Physical Protection of Nuclear Materials and Installations' (CAPFMIN). This Council published in 1992 a Physical Protection Standard based on a deep and careful analysis of INFCIRC 225/Rev.2 including topics like 'sabotage scenario'. Since then, the world's scenario has changed, and some concepts like 'design basis threat', 'detection, delay and response', 'performance approach and prescriptive approach', have been applied to the design of physical protection systems in facilities other than nuclear installations. In Argentina, radioactive sources are widely used in medical and industrial applications with more than 1,600 facilities controlled by the Nuclear Regulatory Authority (in spanish ARN). During 2005, measures like 'access control', 'timely detection of intruder', 'background checks', and 'security plan', were required by ARN for implementation in facilities with radioactive sources. To 'close the cycle' the next step is to produce a regulatory standard based on the operational experience acquired during 2005. ARN has developed a set of criteria for including them in a new standard on security of radioactive materials. Besides, a specific Regulatory Guide is being prepared to help licensees of facilities in design a security system and to fulfill the 'Design of Security System Questionnaire'. The present paper describes the proposed Standard on Security of Radioactive Sources and the draft of the Nuclear Security Regulatory Guidance, based on our regulatory experience and the latest international recommendations. (author)

  15. Comparison of preliminary herpetofaunas of the Sierras la Madera (Oposura) and Bacadehuachi with the mainland Sierra Madre Occidental in Sonora, Mexico

    Science.gov (United States)

    Thomas R. Van Devender; Erik F. Enderson; Dale S. Turner; Roberto A. Villa; Stephen F. Hale; George M. Ferguson; Charles. Hedgcock

    2013-01-01

    Amphibians and reptiles were observed in the Sierra La Madera (59 species), an isolated Sky Island mountain range, and the Sierra Bacadéhuachi (30 species), the westernmost mountain range in the Sierra Madre Occidental (SMO) range in east-central Sonora. These preliminary herpetofaunas were compared with the herpetofauna of the Yécora area in eastern Sonora in the main...

  16. Magnetotellurics applied to the study of the Guaraní aquifer in Entre Ríos Province, N-E Argentina

    Science.gov (United States)

    Favetto, Alicia; Curcio, Ana; Pomposiello, Cristina

    2011-07-01

    The South American Guaraní Aquifer System covers the entire Parana basin and part of the Chaco-Parana basin. This system is one of the most important groundwater reservoirs; it is shared by four neighboring countries covering an area larger than one million square kilometers. The geological units closely related to the Guaraní Aquifer are the Piramboia and Botucatu Formations that consist of Triassic-Jurassic aeolian, fluvial and lacustrine sandstones, and the Serra Geral basalts with clastic intercalations. Serra Geral, an effusive Cretaceous complex, covers the sandstones and provides a high degree of confinement to the system. This paper presents the interpretation of magnetotelluric (MT) data collected during 2007-2008 in Entre Ríos Province, Argentina. These data, recorded in three profiles, mainly provide the depth to the crystalline basement, determinant for the presence of aquifer-related sediments. Models showed that the discrimination of the basalts strongly depends on local electrical characteristics. Model information is quite consistent with the information from oil and thermal wells located close to the profiles.

  17. Argentina

    Directory of Open Access Journals (Sweden)

    Guillermina Fernández Zambón

    2005-01-01

    Full Text Available La actividad industrial, de cualquier época, tiene una gran importancia para el hombre, pues al igual que el resto de los procesos económicos, es el reflejo del accionar cotidiano de la sociedad sobre el espacio. Considerando esto, el presente articulo tiene como objetivo presentar al patrimonio industrial como recurso para organizar rutas turísticas que permitan en algunos casos recuperar espacios industriales abandonados o usar establecimientos industriales en funcionamiento pero que pueden incorporarse a este tipo de desarrollo turístico. La creación de rutas turísticas puede permitir la reactivación de las economías locales, por constituirse en definitiva en una nueva actividad económica. Para lograr esto es necesario articular el sector público y el privado. De esta forma es posible, a través de la creación de rutas turísticas del patrimonio industrial, generar un desarrollo turístico local sustentable.

  18. GESTIÓN DE MODELOS DE EXTERNACIÓN DE ADULTOS CON ALTERACIONES MENTALES Y EL IMPACTO EN LA DESINSTITUCIONALIZACIÓN EN ARGENTINA

    Directory of Open Access Journals (Sweden)

    Morasso, Ana María

    2013-01-01

    Full Text Available El objetivo de este trabajo es caracterizar y evaluar el diseño organizacional y los modelos de desinstitucionalización de países desarrollados en Occidente y su impacto en los operados en Argentina. Se describió la estructura, configuración, descentralización y posiciones de enlace de las organizaciones de Salud Mental. Se observó redes de servicios con diferentes grados de autonomía y descentralización regional. En Argentina se describió una multiplicidad de abordajes y tratamientos implementados de manera irregular y discontinua. Los proyectos existentes plantean una dicotomía entre dos sistemas sanitarios: el trabajo hospitalario y el trabajo en la comunidad, que impidieron un trabajo común, que potenciara las acciones entre las instituciones hospitalarias y las conducidas en la sociedad. No se miden los resultados en términos del producto real del trabajo profesional realizado (estado de salud de los pacientes sino en términos del producto nominal (servicios prestados. Una característica común observada en los modelos analizados fue la puntualidad de las diferentes experiencias sometidas a vicisitudes políticas, bajas asignaciones presupuestarias para la subvención de los programas, insuficiencia en los sistemas de evaluación ex-post, así como la competencia desventajosa con otros grupos para la asignación de vivienda, empleo y seguridad social.

  19. Gestión de inventarios como factor de competitividad, en el sector metalmecánico de la región occidental de Venezuela

    Directory of Open Access Journals (Sweden)

    Gabriel J. Aguilar O.

    2009-01-01

    Full Text Available La investigación que se presenta a continuación, tiene como objeto analizar la gestión de inventario como factor de competitividad, en las empresas del Sector Metalmecánico de la Región Occidental de Venezuela. La metodología es de tipo descriptivo, no experimental, transeccional. La población se compone de veinte (20 empresas del sector metalmecánico destinadas a la producción de máquinas herramientas, específicamente tornos y fresadoras, circunscritas a la región del occidente de Venezuela, tomándose para el estudio, la totalidad de las mismas. Los resultados obtenidos mediante el análisis estadístico, permiten concluir que la gestión de inventario dentro de la industria metalmecánica de la Región Occidental de Venezuela, no constituye un factor de competitividad en las empresas del sector

  20. Lista anotada y clave para las ranas (género Eleutherodactylus chocoanas del Valle del Cauca, y apuntes sobre las especies de la Cordillera Occidental adyacente

    Directory of Open Access Journals (Sweden)

    Lynch John Douglas

    1999-11-01

    Full Text Available Twenty-three species of the genus Eleutherodactylus are reported fram 24 localities in the western lowlands of Valle del Cauca, Colombia, with notes on their identificacion and distributions. Up to 16 species have been taken from a single site. The cloud forest fauna of  Eleutherodactylus found on the Cordillera Occidental above the drainages of the Anchicayá, Cajambre, Calima, and Dagua rivers consists of 24 species with up to 18 species being found in a single site.Se da información sobre la identificación y las distribuciones de 23 especies del género Eleutherodactylus de 24 sitios de las tierras bajas del occidente del Valle del Cauca, Colombia. Hasta 16 especies fueron registradas del mismo sitio. La fauna de Eleutherodactylus de los bosques nublados de la Cordillera Occidental en los drenajes de los ríos Anchicayá, Cajambre, Calima, y Dagua consta de 24 especies, con hasta 18 encontradas en un mismo sitio.

  1. Nutritional value and fatty acid composition of some traditional Argentinean meat sausages Composição nutricional e perfil de ácidos graxos de embutidos tradicionais da Argentina

    Directory of Open Access Journals (Sweden)

    Mara Cristina Romero

    2013-03-01

    Full Text Available The aim of this study was to determine the nutritional composition (moisture, protein, carbohydrates, and total fat of some meat products produced in the northeastern Argentina, analyzing fatty acids composition, polyunsaturated/saturated fatty acid ratio PUFA/SFA ratio (polyunsaturated/ saturated fatty acids, n-6/n-3 ratio, and CLA (conjugated linoleic acid content. Thirty traditional meat products produced by different processes were used. The samples were classified into 4 different categories as follows: salamín (dry cured and fermented sausage, chorizos (raw sausage, chorizo ahumado (cooked and smoked sausage, and morcilla (cooked sausage. From the results obtained it can be said that the total carbohydrate contents of the salamín studied were slightly lower; fat content of raw chorizo was significantly lower, and protein content of chorizo ahumado was significantly higher than those comparison from databases from other regions of Argentina, USA, and Spain. Except for chorizo, which has a value lower than 0.4, the PUFA/SFA-stearic ratio of the other products were a little higher than those reported by other researchers. CLA (Conjugated linoleic acid contents between 0.03% and 0.19% were detected. The results obtained indicate that salamín produced in northeastern Argentina, Chaco state, shows high protein and PUFA (Polyunsaturated fatty acids contents, and low atherogenic and thrombogenic indexes, which makes it a more healthful product than those of similar composition produced in other countries.O objetivo deste trabalho foi determinar a composição nutricional de alguns produtos de carne elaborados no nordeste da Argentina, a análise da composição dos ácidos graxos, conteúdo de CLA, relações AGPI/AGS e n-6/n-3. Trinta produtos tradicionais de carne a partir de processos diferentes foram utilizados. As amostras foram classificadas em 4 categorias: Salamin (embutido seco e fermentado, chorizo (linguiça, chorizo ahumado (lingui

  2. “All men were born in Jerusalem”. Mith and gospel in the stories about the origen of humans among the toba (Qom of the Argentinian Chaco

    Directory of Open Access Journals (Sweden)

    Florencia Carmen Tola

    2011-12-01

    Full Text Available Parallelisms between stories of biblical inspiration and myths that describe the origins of the human beings, their corporal transformations and the differences between diverse types of beings can be found in contemporary narrations of the Toba people (Qom of the Argentinean Gran Chaco. Events described in the Bible are usually spun with elements of the mythical past of Toba people, therefore generating a biblical reading of the indigenous past and new readings on the human origins, of the differences between beings and of the importance of the body in the constitution of human specificity. This paper examines some of these narrations where myths and Biblical stories are interlaced giving rise to new notions of body and person.

  3. PERSONAS CORPORIZADAS, MULTIPLICIDADES Y EXTENSIONES: UN ACERCAMIENTO A LAS NOCIONES de cuerpo y persona entre los tobas (qom del chaco argentino

    Directory of Open Access Journals (Sweden)

    FLORENCIA C. TOLA

    2005-01-01

    Full Text Available ESTE ARTÍCULO ANALIZA LAS NOCIONES DE PERSONA Y CUERPO ENTRE LOS INDÍGENAS tobas (qom del Chaco argentino y despliega una serie de conceptos derivados del trabajo etnográfico. A partir de dos mitos centrales entre los tobas, analiza el papel de la posesión de un cuerpo en la definición de la persona y en la diferenciación entre humanos y no-humanos. Luego, aborda algunos de los criterios que definen la existencia de personas humanas y no-humanas que poseen o carecen de cuerpo. Seguidamente, analiza las características de la noción toba de persona por medio de la constitución colectiva del cuerpo en función de la circulación de componentes provenientes de otras personas-cuerpos.

  4. Phlebotominae: Vectores de Leishmaniasis en las provincias de Santa Fe y Entre Ríos, Argentina Phlebotominae: vectors of leishmaniasis in the provinces of Santa Fe and Entre Ríos, Argentina

    Directory of Open Access Journals (Sweden)

    Oscar D. Salomón

    2006-06-01

    Full Text Available La transmisión de leishmaniasis tegumentaria (LT se incrementó desde 1985 en 9 provincias argentinas. Santa Fe y Entre Ríos en dicho período no notificaron casos de transmisión autóctona comprobada, sin embargo en el año 2003 ocurrió un brote epidémico en Bella Vista, Corrientes, localidad que se encuentra en un área con continuidad ecológica y contigüidad geográfica con ambas provincias. Por ello, para determinar el riesgo potencial de transmisión de LT en las áreas próximas y al sur de Bella Vista se realizaron capturas de Phlebotominae en febrero del 2004, colectándose sobre las márgenes del río Paraná en Santa Fe (El Rabón, Villa Ocampo, Cayastá y en Entre Ríos (La Paz, La Celina-Villa Urquiza 860 ejemplares de Lutzomyia neivai (99.5% y Lu. migonei (0.5 %, ambas especies con capacidad vectorial para Leishmania (V. braziliensis. En Tartagal, Santa Fe, las capturas fueron consistentes con el paisaje de «chaco» residual: 7 ejemplares de Lu. nerivai, Lu. migonei y Lu. cortelezzii. Se destaca el riesgo potencial de transmisión epidémica de LT en estas provincias, especialmente por la tropicalización progresiva hacia el sur de la selva en galeria paranaense. Se recomiendan actividades de vigilancia clínica y vectorial.The transmission of tegumentary leishmaniasis (TL has increased in 9 provinces of Argentina since 1985. Santa Fe and Entre Ríos did not record in this period autochtonous probed cases: however, an epidemic outbreak took place in 2003 in Bella Vista, Corrientes, located in an area with ecological continuity and contiguous to both provinces. In order to evaluate the potential risk of transmission of LT, Phlebotominae were captured at locations close to and southern from Bella Vista during February 2004. The traps located on the shores of Parana river in Santa Fe (El Rabón, Villa Ocampo, Cayastá, and Entre Ríos (La Paz. La Celina-Villa Urquiza captured 860 individuals of Lutzomyia neivai (99.5% and Lu

  5. Soil moisture and excavation behaviour in the Chaco leaf-cutting ant (Atta vollenweideri: digging performance and prevention of water inflow into the nest.

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    Steffen Pielström

    Full Text Available The Chaco leaf-cutting ant Atta vollenweideri is native to the clay-heavy soils of the Gran Chaco region in South America. Because of seasonal floods, colonies are regularly exposed to varying moisture across the soil profile, a factor that not only strongly influences workers' digging performance during nest building, but also determines the suitability of the soil for the rearing of the colony's symbiotic fungus. In this study, we investigated the effects of varying soil moisture on behaviours associated with underground nest building in A. vollenweideri. This was done in a series of laboratory experiments using standardised, plastic clay-water mixtures with gravimetric water contents ranging from relatively brittle material to mixtures close to the liquid limit. Our experiments showed that preference and group-level digging rate increased with increasing water content, but then dropped considerably for extremely moist materials. The production of vibrational recruitment signals during digging showed, on the contrary, a slightly negative linear correlation with soil moisture. Workers formed and carried clay pellets at higher rates in moist clay, even at the highest water content tested. Hence, their weak preference and low group-level excavation rate observed for that mixture cannot be explained by any inability to work with the material. More likely, extremely high moistures may indicate locations unsuitable for nest building. To test this hypothesis, we simulated a situation in which workers excavated an upward tunnel below accumulated surface water. The ants stopped digging about 12 mm below the interface soil/water, a behaviour representing a possible adaptation to the threat of water inflow field colonies are exposed to while digging under seasonally flooded soils. Possible roles of soil water in the temporal and spatial pattern of nest growth are discussed.

  6. Soil Moisture and Excavation Behaviour in the Chaco Leaf-Cutting Ant (Atta vollenweideri): Digging Performance and Prevention of Water Inflow into the Nest

    Science.gov (United States)

    Pielström, Steffen; Roces, Flavio

    2014-01-01

    The Chaco leaf-cutting ant Atta vollenweideri is native to the clay-heavy soils of the Gran Chaco region in South America. Because of seasonal floods, colonies are regularly exposed to varying moisture across the soil profile, a factor that not only strongly influences workers' digging performance during nest building, but also determines the suitability of the soil for the rearing of the colony's symbiotic fungus. In this study, we investigated the effects of varying soil moisture on behaviours associated with underground nest building in A. vollenweideri. This was done in a series of laboratory experiments using standardised, plastic clay-water mixtures with gravimetric water contents ranging from relatively brittle material to mixtures close to the liquid limit. Our experiments showed that preference and group-level digging rate increased with increasing water content, but then dropped considerably for extremely moist materials. The production of vibrational recruitment signals during digging showed, on the contrary, a slightly negative linear correlation with soil moisture. Workers formed and carried clay pellets at higher rates in moist clay, even at the highest water content tested. Hence, their weak preference and low group-level excavation rate observed for that mixture cannot be explained by any inability to work with the material. More likely, extremely high moistures may indicate locations unsuitable for nest building. To test this hypothesis, we simulated a situation in which workers excavated an upward tunnel below accumulated surface water. The ants stopped digging about 12 mm below the interface soil/water, a behaviour representing a possible adaptation to the threat of water inflow field colonies are exposed to while digging under seasonally flooded soils. Possible roles of soil water in the temporal and spatial pattern of nest growth are discussed. PMID:24748382

  7. A comparative study of Trypanosoma cruzi infection in sylvatic mammals from a protected and a disturbed area in the Argentine Chaco.

    Science.gov (United States)

    Orozco, M M; Enriquez, G F; Cardinal, M V; Piccinali, R V; Gürtler, R E

    2016-03-01

    Understanding the complex epidemiology of Trypanosoma cruzi transmission cycles requires comparative studies in widely different environments. We assessed the occurrence of T. cruzi infection in sylvatic mammals, their infectiousness to the vector, and parasite genotypes in a protected area of the Argentine Chaco, and compared them with information obtained similarly in a nearby disturbed area. A total of 278 mammals from >23 species in the protected area were diagnosed for T. cruzi infection using xenodiagnosis, kDNA-PCR and nuclear satellite DNA-PCR (SAT) from blood samples. The relative abundance and species composition differed substantially between areas. Didelphis albiventris opossums were less abundant in the protected area; had a significantly lower body mass index, and a stage structure biased toward earlier stages. The capture of armadillos was lower in the protected area. The composite prevalence of T. cruzi infection across host species was significantly lower in the protected area (11.1%) than in the disturbed area (22.1%), and heterogeneous across species groups. The prevalence of infection in D. albiventris and Thylamys pusilla opossums was significantly lower in the protected area (nil for D. albiventris), whereas infection in sigmodontine rodents was three times higher in the protected area (17.5 versus 5.7%). Parasite isolates from the two xenodiagnosis-positive mammals (1 Dasypus novemcinctus and 1 Conepatus chinga) were typed as TcIII; both specimens were highly infectious to Triatoma infestans. Fat-tailed opossums, bats and rodents were kDNA-PCR-positive and xenodiagnosis-negative. Desmodus rotundus and Myotis bats were found infected with T. cruzi for the first time in the Gran Chaco. Copyright © 2015 Elsevier B.V. All rights reserved.

  8. Memorias de la inmigración. Historias de vida de los inmigrantes europeos en el Chaco a través de sus fotografías

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    Alejandra Reyero

    2010-01-01

    Full Text Available El trabajo presenta los resultados preliminares de una investigación en curso, centrada en el estudio de las memorias visuales de la inmigración al Chaco entre fines del siglo XIX y el siglo XX. En particular, se estudian las historias de vida de los inmigrantes a través de sus fotografías. El objetivo es trazar una retrospectiva social, histórica y estética de la práctica fotográfica chaqueña y analizar las imágenes que de sí mismos y de su entorno son capaces de construir los inmigrantes en el Chaco. Las mismas siguen todo su itinerario vital y los acompañan en cada momento significativo de su existencia: desde la celebración de vida (bautismos, bodas, cumpleaños hasta la certificación de la muerte (rituales fúnebres. En esta oportunidad, presentamos una primera lectura de un conjunto de fotografías obtenidas a fines del siglo XIX y mediados del XX en distintas localidades de la región chaqueña, en las que se asentaron los grupos inmigrantes (en su mayoría italianos. Se plantea un ejercicio reflexivo basado en la identificación de ciertos elementos comunes que por su reiteración pueden ser entendidos como invariantes visuales dentro del heterogéneo corpus fotográfico sobre la inmigración chaqueña y se analizan los modelos representacionales privilegiados, así como las condiciones de producción y uso.

  9. Cambios en el uso del suelo de las tierras del ingenio Las Palmas, provincia de Chaco, en los años 1987 y 2001

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    Febe Rozkiewicz

    2010-01-01

    Full Text Available En el departamento Bermejo, provincia de Chaco, a fines del siglo XIX se origina uno de los ingenios azucareros más importantes del país: Las Palmas del Chaco Austral S.A. En la década de los noventa es víctima de las políticas de privatización imperantes del momento. Como consecuencia, se produce su cierre y posterior desaparición, lo que supuso la eliminación de la principal fuente de trabajo de la localidad. Las tendencias actuales y novedosas en teledetección, cartografía digital y Sistemas de Información Geográfica (SIG son una forma útil e importante de ofrecer conocimientos actualizados para el diagnóstico, monitoreo y su aplicación en la gestión e investigación de recursos presentes en los distintos lugares de nuestro país. En el presente trabajo se pretende analizar los cambios producidos en el uso de suelo en las tierras del ex Ingenio a partir del cierre del mismo, mediante el uso de imágenes satelitales de los años 1987 y 2001, y de sistemas de información geográfica (SIG. El análisis multiespectral y multitemporal de las mismas permitirá discriminar los tipos de cobertura del suelo sobre la base de su respuesta espectral.

  10. Conquista, control y convicción: el papel de los parlamentos indígenas en México, el Chaco y Norteamérica

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    Lázaro Ávila, Carlos

    1999-12-01

    Full Text Available This article evaluates the role played by the frontier conflicts in the adoption of policies which led to the creation of a diplomatic or consensual ambit. The first frontier conflict to be dealt with is that of Northern Mexico, through which the hasty solutions that had to be adopted for its resolution are studied. However these policies had a deep repercussion in the metropolis and they were applied and modified in later frontier conflicts such as that of the Chaco region, midway between the Austrians' and the Borbons' policies. Finally, I analyze the case of the North American Spanish possessions, where pactism was applied by the Borbons' reform policies which faced the difficult task of preserving their territorial dominions as well as their commercial interests in a complex political context.

    En este artículo se hace una evaluación del papel que desempeñaron los conflictos fronterizos en la toma de una serie de medidas para su resolución y que desembocaron en la adopción de un ámbito de consenso o diplomático. Se parte del primer conflicto fronterizo americano, el norte de México, para ilustrar las aceleradas soluciones que se hubo de adoptar para solventarlo. Sin embargo esas medidas tuvieron una honda repercusión en la metrópoli y se modificaron en fronteras posteriores como el Chaco, a caballo entre la política austríaca y la reformista borbónica. Por último, analizamos el caso de las posesiones españolas de Norteamérica donde el pactismo se tuvo que aplicar bajo la égida directa del reformismo borbónico que afrontó allí el difícil equilibrio de preservar sus dominios territoriales a la vez que sus intereses comerciales en un contexto político complejo.

  11. Comportamiento de variedades de Chile dulce (capsicum annum en la región occidental de el Salvador

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    Lesser Linares

    2004-01-01

    Full Text Available Capsicun annum en la región occidental de El Salvador. Con el objetivo de seleccionar material vegetativo adaptable a las diferentes condiciones agroecológicas de El Salvador, se implementó una investigación de seis variedades de chile dulce. Los ensayos se realizaron en Candelaria de la Frontera, Atiquizaya y Chalchuapa en el año 2002. El diseño experimental fue de bloques al azar, con cuatro repeticiones y seis tratamientos, conformados por los variedades Nathalie, Comandante, Lido, Tikal, Quetzal y una variedad Criolla. Hubo diferencias significativas al 1 % de probabilidad para las variables de altura de planta, largo, peso, diámetro, numero de frutos y rendimiento, en el combinado de las tres localidades. El material Nathalie, sobresalió en las variables altura de planta (0,49 m, número de frutos (259.500 frutos/ha, y rendimiento (25,11 t/ha, y como consecuencia reportó el mejor ingreso ($ 19.332,80 y la mejor relación beneficio costo (3,31. La duración de anaquel varió entre seis y nueve días con respecto a los diferentes materiales de chile dulce. Los resultados obtenidos podrían crear la base para validar el cultivar Nathalie en las zonas de influencia.

  12. Modeling the Potential Distribution of Picea chihuahuana Martínez, an Endangered Species at the Sierra Madre Occidental, Mexico

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    Victor Aguilar-Soto

    2015-03-01

    Full Text Available Species distribution models (SDMs help identify areas for the development of populations or communities to prevent extinctions, especially in the face of the global environmental change. This study modeled the potential distribution of the tree Picea chihuahuana Martínez, a species in danger of extinction, using the maximum entropy modeling method (MaxEnt at three scales: local, state and national. We used a total of 38 presence data from the Sierra Madre Occidental. At the local scale, we compared MaxEnt with the reclassification and overlay method integrated in a geographic information system. MaxEnt generated maps with a high predictive capability (AUC > 0.97. The distribution of P. chihuahuana is defined by vegetation type and minimum temperature at national and state scales. At the local scale, both models calculated similar areas for the potential distribution of the species; the variables that better defined the species distribution were vegetation type, aspect and distance to water flows. Populations of P. chihuahuana have always been small, but our results show potential habitat greater than the area of the actual distribution. These results provide an insight into the availability of areas suitable for the species’ regeneration, possibly through assisted colonization.

  13. Sobre la introducción del Castaño, Castanea sativa, en el Mediterráneo Occidental

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    Antonio GUILLEN OTERINO

    2009-10-01

    Full Text Available Una idea generalizada y bastante aceptada en torno a la introducción del Castaño, Castanea sativa, en el área occidental del Mediterráneo y concretamente en la Península es la que sostiene que esta especie fue extendida por los romanos quienes tomándola en su zona de origen, Asia menor y Caucaso, la naturalizaron en toda la Europa mediterránea hasta llegar a la Península Ibérica. Muchos autores modernos en sus publicaciones, al hablar del Castaño, siguen haciendo mención a lo expuesto anteriormente (JONKER, 1952; STRASBURGER, 1894; LANZARA y PIZZETTI, 1977 y FONT QUER, 1961 entre otros. Sin embargo, parece que los datos que la palinología y el estudio de carbones han aportado en investigaciones realizadas en yacimientos arqueológicos y turberas constatan la presencia del Castaño en épocas muy anteriores a la de la expansión romana.

  14. ¿Hemisferio occidental dividido? O bien: ¿Hasta dónde llega México?

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    Marianne Braig

    2014-06-01

    Full Text Available Una vez más, el hemisferio occidental es objeto de redefiniciones. En las diversas construcciones del espacio, como lo expondremos más claramente abajo, se manifiestan importantes diferencias que resultan de las representaciones que se tengan del hemisferio como un todo común o escindido. En esa controversia corresponde a México, como tierra fronteriza entre el Norte y el Sur, como un mundo intermedio que no es claramente determinable geográficamente, un papel central. ¿Se desplaza del Sur el país –desde 1994 perteneciente al Tratado de Libre Comercio (TLC de Norteamérica y desde 2002 a la zona militar del Northern Command de EE.UU.– acaparado por Norteamérica, o experimenta Norteamérica una mexicanización (no sólo por los mexicanos, que, como teme Huntington, no sólo transforma el idioma y los hábitos lingüísticos, sino también la cultura, la política, la justicia y el comercio?

  15. Control of nuclear materials and materials in Argentina

    International Nuclear Information System (INIS)

    Arbor G, A.; Fernandes M, S.

    1988-01-01

    A general view about the safeguards activities in Argentina is presented. The national system of accounting for and control of nuclear materials is described. The safeguards agreement signed by Argentina are presented. (E.G.) [pt

  16. Papel y significación urbana de los espacios para la música en la ciudad occidental Papel y significación urbana de los espacios para la música en la ciudad occidental

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    Roberto Goycoolea Prado

    2008-04-01

    Full Text Available To know the urban location and the characteristics the spaces designed for a specific social activity contributes to understand its function in the city and the relations established with the other activities and social estates. Starting off of this idea, the spaces for “classical music”, understood like results of the interactions between the music and the estates of the political and/or economic power that have promoted them in the modern western city, are analyzed in the article. It is not purpose of the article to make a history of the appearance and urban meaning of the spaces for music, if not to study those that are assumption new ways to understand the relation art-power in the public space.Conocer la localización urbana y las características de los espacios diseñados para una actividad social específica contribuye a comprender su papel en la ciudad y las relaciones establecidas con las demás actividades y estamentos sociales. Partiendo de esta idea, se analizan en el artículo los espacios para la “música culta”, entendidos como resultados de las interacciones entre la música y los estamentos del poder político y/o económico que los han promovido en la ciudad occidental moderna. No es objetivo del artículo realizar una historia de la apariencia y significación urbana de los espacios para la música, sino estudiar los que han supuesto nuevas maneras de entender la relación arte-poder en el espacio público.

  17. Presencia de Trachemys Agassiz, 1857 (Testudines, Emydidae en el Pleistoceno tardío del centro de la Argentina

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    Cabrera, Mario R.

    2011-08-01

    Full Text Available En este trabajo se describen restos del caparazón de una tortuga que constituyen el primer registro del género dulceacuícola Trachemys Agassiz, 1857 y de la familia Emydidae Rafinesque, 1815 en la provincia de Córdoba, y el hallazgo más occidental de ambos en la Argentina. Los materiales recuperados consisten en la placa proneural, las placas pleurales IV y VIII derechas y fragmentos de las placas pleurales III y IV izquierdas, epiplastron, hioplastron e hipoplastron derechos, más tres fragmentos indeterminables. Los restos provienendel Sitio El Silencio (30°53’20" S, 62°49’29" W, un yacimiento paleontológico de edad Pleistoceno tardío - Holoceno temprano, expuesto en la costa de la actual laguna Mar Chiquita, en un nivel de limo con intercalaciones de carbonato de calcio asignado a la Formación Tezanos Pinto, cuya depositación se produjo entre los 36.000 y 8.000 AP. El registro esrelacionado con un evento húmedo acontecido entre los 16.500 y 15.500 años AP, que pudo haber sido lo suficientemente marcado y sostenido como para posibilitar el ingreso deTrachemys (y otros taxones vertebrados durante el Pleistoceno a cercanías de la laguna Mar Chiquita, unos 220 km hacia el oeste de su distribución actual.

  18. Psychiatry and humanism in Argentina.

    Science.gov (United States)

    Niño Amieva, Alejandra

    2016-04-01

    The authors of the present selection of Latin American Psychiatry texts were characterized by a common deep humanistic attitude. These prolific writers were able to establish or extend the scope of the discipline in which they chose to act, questioning the establishment of rigid boundaries within the framework of a rigorous epistemological reflection. Thus the systematizing spirit of Jose Ingenieros' in the context of positivist evolutionism, resulted in the act of founding a discipline that integrated the biological and the social. In the case of Guillermo Vidal his conception of mental health went beyond the biomedical to consider psychotherapies as an emotional commitment, continence and empathic understanding; with regard to César Cabral his formation and extensive clinical practice resulted in a work defined by the inquiring into the theoretical concepts underlying Psychiatry and Clinical Psychology. This brief selection does not exhaust the issues or the level of ideas and discussions of Psychiatry in Argentina, but constitutes a textual corpus representative of a disciplinary conception understood as scientific and humanistic endeavor.

  19. LA INFORMACIÓN ETNOGRÁFICA Y ETNOLÓGICA COMO MARCO INTERPRETATIVO PARA CONTEXTOS ZOOARQUEOLÓGICOS EN LA LLANURA ALUVIAL DEL PARANÁ (SANTA FE, ARGENTINA / The ethnographic and ethnologic information as interpretative framework for zooarchaeological ...

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    Julieta Isabel Sartori

    2015-12-01

    Full Text Available En este trabajo se presenta información histórica proveniente de diferentes documentos escritos, los cuales fueron producidos por viajeros que estuvieron en el nuevo continente durante los S XVI y XVII. Los mismos otorgan datos acerca de la subsistencia de cazadores-recolectores-pescadores que habitaban la llanura aluvial del Paraná (centro-este de la actual provincia de Santa Fe, así como también sectores aledaños (como en el Gran Chaco y Buenos Aires, Argentina.Por otra parte también se hace referencia a investigaciones etnográficas sobre grupos de momentos históricos y actuales. En todos los casos el hincapié está puesto en aquellos grupos cuyo tipo de subsistencia podría ser comparable con la de quienes habitaron el área de interés en el pasado pre-europeo. Teniendo en cuenta los distintos tipos de registros a considerar aquí, el objetivo de este trabajo es analizar si la información que refiere a la explotación de los recursos faunísticos es útil para proporcionar marcos de referencia más amplios para las interpretaciones arqueológicas de un sector de la llanura aluvial del Paraná. AbstractIn this paper we develop historic information provide for different writings, which were produce by explorers that stay in the new continent during XVI and XVIII centuries. These documents give data about subsistence of hunter-gatherers that inhabit the Alluvial Plain of the Paraná River (east-center of Santa Fe and adjacent sectors (i.e. Gran Chaco y Buenos Aires, Argentina.In addition, we also make references about the ethnographical researches for current and historical groups. In all cases we emphasis those which subsistence could be comparable with the hunter-gatherers that lived in the area under studied. Considering the different types of works that we refer, we aim to analyze if the information about the exploitation of fauna resources is useful to provide a frame of reference to archaeological interpretations in the

  20. Distribución espacial de anomalías del NDVI derivado del sensor VEGETATION SPOT 4/5 ysu relación con las coberturas vegetales, usos de la tierra y características geomorfológicas en la provincia de Santiago del Estero, Argentina / Spatial distribution of anomalies of NDVI derived from sensor VEGETATION SPOT 4/5 and its relation with vegetation cover, uses of ground and geomorphology in Santiago del Estero, Argentina

    Directory of Open Access Journals (Sweden)

    Jose Luis Tiedermann

    2010-12-01

    Full Text Available Se determinaron las anomalías negativas (AN y positivas (AP del NDVI derivado del sensor VEGETATION SPOT 4/5, en la provincia de Santiago del Estero, Argentina. El periodo analizado (1998-2008 tuvo fuertes variaciones en los patrones de precipitación, por efecto del ENSO, por cuanto las anomalías del NDVI fueron evaluadas, mediante tabulación cruzada, en función de dos periodos: húmedo (PH y seco (PS. Las AN, se relacionaron, durante todo el periodo, con vegetación halófila en áreas deprimidas salobres, con vegetación hidrófila en ambientes acuáticos y con suelo rocoso. Durante el PS, las AN se relacionaron con áreas deforestadas con fines agrícolas. Las AP, se relacionaron, durante todo el periodo, con el bosque Chaqueño denso y bosque Chaqueño Serrano denso. La mayor estabilidad y productividad de biomasa verde de los bosques, estaría relacionada, a su mayor biodiversidad, estratificación, al predominio de especies leñosas perennes de raíces profundas y a las estratégicas adaptaciones, morfológicas y fisiológicas, para el uso eficiente del agua. Las regiones geomorfológicas no se relacionan entre si entre periodos.AbstractThe negative (AN and positive (AP anomalies of the NDVI derived from sensor VEGETATION SPOT 4/5 were determined in the province of Santiago del Estero, Argentina. The analyzed period (1998-2008 presented strong variations in rainfall patterns, as a result of the ENSO, inasmuch as the anomalies of the NDVI were evaluated, by means of crossed tabulation, based on two periods: humid (PH and dry (PS. The AN, were related with halophytic species of depressed areas, with vegetation aquatic hydrophilic and rocky ground. During the dry period, the AN were related to deforested areas with agricultural aims. The AP, were related, throughout the period with the forest dense Chaco Semiarid and forest dense Chaco Serrano. The greater stability and productivity of green biomass of forest, would be related, greater

  1. The kidney transplant experience at Hospital de Especialidades, Centro Médico Nacional de Occidente, IMSS, Guadalajara México.

    Science.gov (United States)

    Monteón, Francisco J; Gómez, Benjamin; Valdespino, Carlos; Chávez, Salvador; Sandoval, Mario; Flores, Antonio; Herrera, Roberto; Ramos, Francisco; Hernandez, Alfonso; Camarena, José L; Páez, Hugo; Ramírez, José; Nieves, Juan J; Bassols, Angel; Rosales, Guillermo; Romero, Omar; Paredes, Graciela; Andrade, Jorge; Ruelas, Sara; Contreras, Ana M

    2003-01-01

    A total of 1,356 kidney transplants has been performed in the Hospital de Especialidades del Centro Médico Nacional de Occidente, IMSS, in Guadalajara Mexico, including 935 in the past 8 years. This represents an important increase of this activity in our country. Of the total transplants, 1,218 (90%) were from living donors and only 138 (10%) were from cadaveric donors, a number that we hope to increase. Most recipients were young adults, with an average age of 31 years old. The overall one-year graft and patient survival rates for living-donor kidney recipients were 90% and 82%, and for cadaveric kidney recipients they were 80% and 70%, respectively. Acute rejections occurred in 17% and chronic allograft nephropathy was diagnosed in 7% of our kidney transplant recipients. The main cause of patient death was infection, frequently invasive CMV. Cardiovascular complications were a relatively infrequent cause of death as has been seen in other international series. Hepatitis B and C have been widley studied. Hepatitis C is the most prevalent viral infection in our population. Both living and cadaveric donors in our series were young, which may explain the good results. We have had very few complications among living donors and no mortality. Two donors developed chronic renal insufficiency after the kidney donation (0.001%). This excellent safety record reflects the experience of our team. We hope to increase the number of cadaveric transplant donors with the renewed interest in enlarging the transplantation programs in Mexico while maintaining our high percentage of living donors in order to benefit more patients.

  2. CARACTERIZACIÓN FÍSIOGRÁFICA DE LA PUNA DE SAJAMA, CORDILLERA OCCIDENTAL DE LOS ANDES (BOLIVIA

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    Fernando Javier Santa Cecilia Mateos

    2015-01-01

    Full Text Available Este artículo aproxima a la realidad física de la cordillera Occidental de los Andes. Un espacio geográfico donde los caracteres geológicos relacionados con el vulcanismo adquieren una relevancia especial en la configuración del paisaje andino. Los nevados y llanuras intermedias o altiplanos, son los dos elementos que constituyen la imagen de la puna andina, un territorio situado por encima de los 4.000 metros, ámbito intermedio entre los valles húmedos o yungas y las más altas cumbres de los Andes. A la singularidad volcánica habría que añadir la relacionada con el modelado glaciar, los aspectos hidrográficos y la biogeografia en esta área. El artículo toma como ejemplo de estudio la puna de Sajama en eldepartamento de Oruro, en la frontera boliviano-chilena.Abstract. This article approaches the physical reality of the Western Cordillera of the Andes. A geographical space where characters related geological volcanism are of particular importance in shaping the landscape Andean. The intermediate plains or mountains and plateaus, are the two elements that make up the image of the Andean puna, an area located above 4,000 meters, the middle ground between Yungas wet valley and the highest peaks of the Andes. A volcanic uniqueness should add that related to glacier modeling, hydrographic aspects and biogeography in this area. The article uses the example of the highlands of Sajama study in thedepartment of Oruro in Bolivian-Chilean border.

  3. Observation de terrain et télédétection (Baie du Roi, Spitsberg nord-occidental

    Directory of Open Access Journals (Sweden)

    Dominique Laffly

    1999-06-01

    Full Text Available Les observations de terrain sont fondamentales en télédétection. Selon la finalité de l’étude, la description des paysages observés sera plus ou moins détaillée. Une simple reconnaissance des principaux postes d’occupation du sol demande peu d’indicateurs et ne nécessite pas une localisation à la tachèle près. En revanche, l’analyse du contenu des pixels en vue d’une modélisation statistique s’appuie sur une description thématique détaillée de points localisés très précisément. Dans ce cas les images utilisées doivent être correctement géoréférencées et la localisation sur le terrain se fait à l’aide d’un GPS différentiel. Restent les problèmes du choix des points à analyser ainsi que celui de l’observation elle-même de leur "contenu". Nous présentons dans cet article une méthode qui vise à répondre à ces deux questions. Notre approche est fondée sur la technique du sondage systématique non-aligné. Cette dernière permet de tenir compte à la fois de la valeur des points observés et de leur localisation pour définir le plan d’échantillonnage. Les exemples présentés sont issus d’une étude réalisée sur les sandurs de la presqu’île de Br¯gger au Spitsberg nord-occidental (images SPOT XSP.

  4. MANGROVE FOREST COVER EXTRACTION OF THE COASTAL AREAS OF NEGROS OCCIDENTAL, WESTERN VISAYAS, PHILIPPINES USING LIDAR DATA

    Directory of Open Access Journals (Sweden)

    A. V. Pada

    2016-06-01

    Full Text Available Mangroves have a lot of economic and ecological advantages which include coastal protection, habitat for wildlife, fisheries and forestry products. Determination of the extent of mangrove patches in the coastal areas of the Philippines is therefore important especially in resource conservation, protection and management. This starts with a well-defined and accurate map. LiDARwas used in the mangrove extraction in the different coastal areas of Negros Occidental in Western Visayas, Philippines. Total coastal study area is 1,082.55 km² for the 14 municipalities/ cities processed. Derivatives that were used in the extraction include, DSM, DTM, Hillshade, Intensity, Number of Returns and PCA. The RGB bands of the Orthographic photographs taken at the same time with the LiDAR data were also used as one of the layers during the processing. NDVI, GRVI and Hillshade using Canny Edge Layer were derived as well to produce an enhanced segmentation. Training and Validation points were collected through field validation and visual inspection using Stratified Random Sampling. The points were then used to feed the Support Vector Machine (SVM based on tall structures. Only four classes were used, namely, Built-up, Mangroves, Other Trees and Sugarcane. Buffering and contextual editing were incorporated to reclassify the extracted mangroves. Overall accuracy assessment is at 98.73% (KIA of 98.24% while overall accuracy assessment for Mangroves only is at 98.00%. Using this workflow, mangroves can already be extracted in a large-scale level with acceptable overall accuracy assessments.

  5. Biodiversidad en espacios productivos y los aspectos sociales de las comunidades ribereñas de la Amazonia Occidental

    Directory of Open Access Journals (Sweden)

    Williane Maria de Oliveira Martins

    2014-03-01

    Full Text Available Los sistemas agrícolas ribereño representan una alternativa de producción sustentable para las comunidades tradicionales de la Amazonia, especialmente en cuanto a la diversidad de productos y la generación de ingresos. Por lo tanto, teniendo en cuenta las funciones ecológicas y sociales el propósito de este estudio fue analizar las áreas productivas y aspectos etnosociais de las comunidades ribereñas de la lejano Amazonia Occidental, Acre, Brasil. La recolección de datos se realizó a través de entrevistas participativas, formales e inductivo después de un cuestionario semi-estructurado. Toda la información recogida se transfiere a una base de datos electrónica, que sistematizado y procesado. Los sistemas agrícolas en estas comunidades son los cultivos y quintales. Los cultivos tienen una especie agrodiversidad en la misma zona, el producto principal es el cultivo de la yuca. Los quintales tienen arreglos espaciales de especies frutales, medicinales y sobre todo los cultivos de hortalizas. Así, tanto los astilleros como los claros son responsables de la sostenibilidad de las familias ribereñas de esta comunidad, sirviendo de subsistencia y asistencia económica.Por otra parte, se trata de ser una alternativa adaptada a las condiciones de los ecosistemas agrícolas llanura de inundación en la región.

  6. The nuclear research centre at Bariloche, Argentina

    International Nuclear Information System (INIS)

    Abriata, J.P.

    2001-01-01

    The nuclear research centre at Bariloche (CAB) is one of the four centres under the Atomic Energy Commission of Argentina (CNEA). The research programme of CAB addresses various issues like nuclear reactor development, nuclear fuel and fuel cycle, applications of radioisotopes and radiation, and waste management. There is also a basic nuclear science component. The human resource development in the areas of physics and nuclear engineering is done in an associated Balseiro Institute which has undergraduate and graduate programmes as well as doctoral and postdoctoral research. The Centre interacts well with the society and provides services in the nuclear area. It has a close interaction with the nuclear sector of Argentina as also with many international organisations. Regulatory control over the Centre is carried out by the Nuclear Regulatory Authority of Argentina. (author)

  7. Biomasa de Cornops aquaticum (Orthoptera: Acrididae en humedales del nordeste de Argentina

    Directory of Open Access Journals (Sweden)

    Luciana Irene Gallardo

    2015-03-01

    Full Text Available La estimación de la biomasa en las poblaciones de insectos, es un factor clave para cuantificar los recursos disponibles y los flujos de energía en las redes tróficas de los ecosistemas. Cornops aquaticum es un herbívoro común en las plantas de Eichhornia en los humedales del nordeste de Argentina. Nuestro objetivo fue analizar la variación de su biomasa en relación a las distintas categorías de edades de la población de este acridio, en dos plantas huésped: Eichhornia azurea y Eichhornia crassipes. Para ello, se realizaron muestreos estándar de las poblaciones de C. aquaticum con una red entomológica de 70cm de diámetro, en dos humedales con E. azurea y E. crassipes en las provincias de Corrientes y Chaco; además, se obtuvo el peso seco de los individuos (de manera directa e indirecta y, se propuso un modelo de regresión para estimar la biomasa de C. aquaticum de manera indirecta a partir de una medida de dimensión lineal (longitud del fémur posterior. Un total de 2 307 individuos fueron recolectados y separados en distintas categorías de edades; se obtuvo su abundancia y distintas medidas de dimensión lineal. El modelo propuesto fue lnPS=lna+b*lnH (donde PS=peso seco, a y b son constantes y H=longitud del fémur posterior (R²=0.97. Las variaciones en la biomasa de las poblaciones de C. aquaticum se debieron a la abundancia relativa de cada categoría de edad y al peso seco individual de estos acridios. No hubo diferencias significativas entre la biomasa de las poblaciones de C. aquaticum obtenida por los métodos directo e indirecto en las praderas flotantes de E. azurea y E. crassipes. Este modelo facilita el cálculo de la biomasa individual y poblacional de C. aquaticum y acelera el procesamiento de un gran número de muestras. Finalmente, los valores altos de biomasa poblacional e individual de las categorías de edades (especialmente en adultos enfatizan la importancia de C. aquaticum como consumidor y como recurso

  8. Melliferous insects and the uses assigned to their products in the northern Yungas of Salta, Argentina.

    Science.gov (United States)

    Flores, Fabio Fernando; Hilgert, Norma Inés; Lupo, Liliana Concepción

    2018-04-11

    The order Hymenoptera comprises melliferous insects (bees, wasps and bumblebees); among them, stingless bees comprise a diverse group of eusocial insects present in tropical and subtropical areas. Of a total of approximately 500 species, 400 are found in the Neotropics. On the continent of America, before the introduction of Apis mellifera, these insects represented the main source of honey and wax. In Argentina, ethnobiological investigations had been carried out on this group of insects, principally in the Atlantic Forest and Chaco regions. Out of a total of 33 species, only 14 were recorded for use or breeding. In the Yungas, however, there are no ethnobiological studies analyzing this group of species, although the use of their products is mentioned in different ethnobotanical works. This paper studies the knowledge and uses of melliferous insects by the inhabitants of the village of Baritú and surrounding. Information on location, management and duties assigned (e.g., preparation and administration) to deal with bee products like honey, pollen, wax and propolis was obtained through semi-structured interviews. Besides, reference material was collected to identify melliferous insects known and used in the region. Fifteen ethnospecies were identified and grouped locally according to their defensive behavior. The culturally most important species is the stingless bee Plebeia sp. nov.-mansita-, in terms of frequency of citations and diversity of uses, and among those that sting, the honeybee Apis mellifera-extranjera-. Honey, pollen, wax, and propolis of Plebeia sp. nov. had the highest current frequency of use. Honey is used in food (incorporated at pure state, as a complement and in drinks), as nutraceutical food and in medicinal preparations. In addition, it is an important resource for marketing during the warm season, infusions being the main mode of administration. Pollen is used as a supplement for food and alcoholic drinks, wax mainly in candle making, and

  9. Argentina's YPF hones in on privatization

    International Nuclear Information System (INIS)

    Anon.

    1991-01-01

    This paper reports on Argentina's push to privatize and attract more foreign investment to its petroleum sector which continues to gather momentum. The Argentine government plans by year end 1992 to sell unprofitable assets of Yacimientos Petroliferos Fiscales, then sell as much as 50% of the state oil company through an international stock offering. If privatization proceeds as expected, YPF Pres. Jose Estenssoro the, the company's stock will be offered to private investors early in 1993. The company was founded in 1922. By March 1992, Argentina also will begin selling all assets of state owned Gas del Estado (GDE) through an international bidding process expected to take about 18 months

  10. Communications received from Argentina and Brazil

    International Nuclear Information System (INIS)

    1988-05-01

    The document reproduces the Joint Declaration on Nuclear Policy signed by the Presidents of Argentina and Brazil on 30 November 1985, the Protocol on Nuclear Co-operation between Argentina and Brazil signed on 10 December 1986, the Joint Declaration on Nuclear Policy signed by the two Presidents on 10 December 1986, the Joint Declaration on Nuclear Policy signed by the two Presidents on 17 July 1987 and the Joint Declaration on Nuclear Policy (IPERO Declaration) signed by the two Presidents on 8 April 1988

  11. Operating practical experience at Argentina; Experiencia practica operativa en la Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Quihillalt, Oscar [Nucleoelectria Argentina S.A., Buenos Aires (Argentina)

    1998-12-31

    Operating experiences of Atucha-1 and Embalse Nuclear Power Plants were discussed in this work. The technical and economic aspects, such as reliability, availability, personnel training, operating costs, prices and market, which exercise influence upon Argentina nuclear energy policy, mainly on the power electric generation by nuclear power plants were considered. Finally the current status of the nucleoelectric sector in Argentina and forecasting were analysed. 3 figs., 5 tabs.

  12. Status and conservation of old-growth forests and endemic birds in the pine-oak zone of the Sierra Madre occidental Mexico

    OpenAIRE

    Lammertink, J.M.; Rojas-Tome, J.A.; Casillas-Orona, F.M.; Otto, R.L.

    1996-01-01

    The pine-oak forests of the Sierra Madre Occidental, a mountain range in NW Mexico, have recently been recognized as an area of high endemism and biodiversity. Selective logging threatens three bird species endemic to this habitat, who depend on standing dead trees (snags). This report is based on an 11 month field survey that aimed to locate oldgrowth remnants and to assess the status of the endemic birds. Old-growth is defined here as a forest that has never been logged mechanically. Old-gr...

  13. la dimensión regional en la política para la economía campesina: el caso del occidente antioqueño

    Directory of Open Access Journals (Sweden)

    Jorge Lotero

    1990-07-01

    Full Text Available Se presentan los principales planteamientos metodológicos necesarios para abordar la política para la economía campesina en una perspectiva regional. Después de algunas consideraciones sobre la dimensión espacial en el Programa de Desarrollo Rural Integrado -DRl-, se examina la región del occidente antioqueño, la mayoría de cuyos municipios hacen parte del nuevo Plan de Desarrollo Integral Campesino -PIC-.

  14. Estudios biológicos sobre Coroebus undatus (Fabricius) y Coroebus florentinus (Herbst) (Coleoptera,Buprestidae) en alcornoques de Andalucía Occidental

    OpenAIRE

    Soria Iglesias, Francisco Javier

    1990-01-01

    Coroebus undatus (fabr.) y coroebus florentinus (herbst) son dos coleópteros de la familia buprestidae considerados unos de los mas importantes enemigos del alcornoque (quercus suber). El presente trabajo recoge una serie de actividades centradas en estudios que aporten datos sobre la biología y ecología de estas dos especies en alcornocales de Andalucía occidental, en la confianza de que puedan ser útiles para su aplicación a la hora de un futuro control de ambas. El trabajo se ha dividido b...

  15. La tectonique panafricaine du secteur d’Igherm : implication des dômes extensifs tardi a post-orogeniques (Anti-Atlas Occidental, Maroc

    Directory of Open Access Journals (Sweden)

    Soulaimani, A.

    2005-12-01

    Full Text Available L’évolution tectonique tardi-orogénique panafricaine du secteur d’Igherm (Anti-Atlas occidental, Maroc se caractérise par l’exhumation des parties profondes paléoprotérozoïques à l’image des dômes extensifs. Elle est contrôlée par un détachement principal ductile de faible pendage et des détachements de fort pendage de type extensionnel qui succèdent à un raccourcissement régional de direction NW-SE. Le détachement principal subhorizontal, est souligné par des mylonites de faible degré métamorphique. Il sépare deux unités : l’unité inférieure (complexe métamorphique du Paléoprotérozoïque à comportement ductile et l’unité supérieure (Quartzites néoprotérozoïques du Supergroupe de l’Anti-Atlas à comportement fragile. Cette évolution coïncide avec la mise en place des bassins « supradétachement » du Supergroupe de Ouarzazate durant l’extension qui aurait débuté après le raccourcissement panafricain datés vers 650 Ma. L’évènement extensionnel peut être généralisé à tout l’Anti-Atlas occidental.La evolución tectónica tardi-orogénica panafricana del sector de Igherm (Anti-Atlas occidental, Marruecos se caracteriza por la exhumación de las partes profundas proterozoicas como domos extensivos. Está controlada por un despegue principal dúctil con poco buzamiento y despegues con alto buzamiento de tipo extensional que se sobreponen a un acortamiento regional de dirección NO-SE. El despegue principal subhorizontal viene marcado por milonitas con metamorfismo de grado bajo. Este accidente separa dos unidades : la unidad inferior (complejo metamórfico del Paleoproterozoico de comportamiento dúctil y la unidad superior (cuarcitas del neoproterozoico del Supergrupo del Anti-Atlas de comportamiento frágil. Esta evolución coincide con el origen de las cuencas de «supra-detachment» del Supergrupo de Ouarzazate durante la extensión que se habría producido después del acortamiento

  16. El tema del viaje al mundo de los muertos en la Odisea y su tradición en la literatura occidental

    OpenAIRE

    Linares Sánchez, Jorge Juan

    2017-01-01

    En el presente trabajo analizamos el tema del viaje al mundo de los muertos en la Odisea (la Nékyia del canto XI y la Deuteronékyia en el canto XXIV) y su pervivencia en las diferentes etapas de la literatura occidental, desde la Antigüedad clásica hasta la Edad Contemporánea. Metodología Nuestro trabajo combina el método filológico y el comparativo. Examinamos múltiples reelaboraciones sobre el viaje al mundo de los muertos a fin de identificar los diversos procedimientos mediante los que el...

  17. Dos nuevas especies de cangrejos de agua dulce (Brachyura: Pseudothelphusidae de la Serranía de Los Paraguas, Cordillera Occidental de Colombia

    Directory of Open Access Journals (Sweden)

    Gabriel E Ramos-Tafur

    2006-09-01

    Full Text Available Se describen dos nuevas especies de cangrejos de agua dulce del género Hypolobocera de la Serranía de Los Paraguas, Cordillera Occidental de Colombia. H. solimani n. sp. está estrechamente relacionada con H. alata Campos 1989, pero se puede distinguir de ésta por el margen superior del mero del tercer maxilípedo, el cual es liso; por la forma del ápice del primer gonópodo y la forma del lóbulo interno o papila del canal espermático, la cual es cóncava, levantada y termina bordeada por diminutas papilas o tubérculos redondeados. H. triangula n. sp. es muy similar a H. rotundilobata Rodríguez 1994, pero se diferencia de ésta por el tamaño y la forma del lóbulo lateral, una cresta basal de tubérculos y la superficie apical del gonópodo. Con estas dos nuevas descripciones se incrementa a 20 el número de miembros válidos del género Hypolobocera conocidos del occidente de Colombia o del Chocó biogeográfico.Two new species of fresh water crab (Brachyura: Pseudothelphusidae from Serranía de Los Paraguas, Cordillera Occidental, Colombia. Two new species of freshwater crabs of the genus Hypolobocera from Serranía de Los Paraguas, Cordillera Occidental, Colombia, are described. Hypolobocera solimani n. sp. is closely related to H. alata Campos 1989, but can be distinguished from it by smooth upper margin of third maxilliped merus, the size and shape of apex of first gonopod, and the internal lobe or papilla of spermatic channel, which is concave, raised, with ends with minute papillae or rounded tubercles. Hypolobocera triangula n. sp. is very similar to H. rotundilobata Rodríguez 1994, but differs from it by the shape and size of the lateral lobe, an oblique basal ridge of tubercles and by the apex of first gonopod. With the two new species, the total number of valid members of the genus Hypolobocera known from western Colombia or biogeographic Chocó is 20. Rev. Biol. Trop. 54 (3: 1047-1056. Epub 2006 Sept. 29.

  18. El ius Latii y la integración jurídica de Occidente: latinización vs. romanización

    OpenAIRE

    Espinosa Espinosa, David

    2010-01-01

    En base a los problemas de interpretación histórica que generan las comunidades de derecho latino, y apoyados en el análisis onomástico de la población residente en dichas comunidades, proponemos la idoneidad del empleo del término latinización, frente al tradicional concepto de romanización, para referirnos al proceso de integración jurídica de las poblaciones indígenas de Occidente en época romana.Considering the problems of historical interpretation that generate the communities of Latin r...

  19. Els isòpodes terrestres (Crustacea: Isopoda: Oniscidea) del Parc Natural de l’illa de sa Dragonera (Illes Balears, Mediterrània occidental)

    OpenAIRE

    Garcia, Ll.

    2008-01-01

    S’han recol·lectat 17 espècies d’isòpodes terrestres (Crustacea: Oniscidea) al Parc natural de l’illa de sa Dragonera, situada al sud-oest de l’illa de Mallorca (Espanya, Illes Balears, Mediterrània occidental). En el decurs de vàries expedicions realitzades a l’illa en els anys 1989, 1999, 2000, 2005 i 2006 s’han capturat aproximadament 400 exemplars, directament a mà o mitjançant trampes de caiguda. Fins aleshores únicament s’havia citat a sa Dragonera una espècie d’Oniscidea...

  20. Autoagresión corporal entre los jóvenes del occidente de México: psicopatología y cultura

    Directory of Open Access Journals (Sweden)

    María del Carmen Rojas Hernández

    2009-12-01

    Full Text Available El propósito de este trabajo es analizar, mediante conceptos del psicoanálisis y de la antropología simbólica, algunas prácticas de autoagresión corporal entre jóvenes urbanos del Occidente de México, como una manifestación de enfermedad, de sí mismos y de su sociedad, esta articulación se propone a partir del análisis de trastornos de alimentación, y del acto de auto cortarse la piel.

  1. Notas para el estudio de las rebeliones indígenas a fines del período colonial en la frontera tucumana del Chaco (1781

    Directory of Open Access Journals (Sweden)

    Normando Cruz, Enrique

    2007-12-01

    Full Text Available In 1781 in the tucumana border of the Chaco of the city of Jujuy to the north of the virreinato of the River of the Silver, is developed an indigenous rebellion that is associated with the “Great Andean Rebellion” of Tupac Amaru in Peru and the Katari of La Paz and Chayanta. In this note they are reviewed, they group and they discuss in two hypotheses all the works that on the rebellion exist, considering first those that propose that the rebellion is a “local repercussion” of the rebellions cuzqueña and paceña (specially of the first; and soon the works that agree in the qualification of the rebellion, but dissent in the causes. The historiographical analysis appears in two hypotheses to need the theoretical budgets, bibliography and sources used in the pertinent observations, setting out in the end conjectures for the study of the indigenous rebellions by the end of the colonial period in border areas.

    En 1781 en la frontera tucumana del Chaco de la ciudad de Jujuy, al norte del virreinato del Río de la Plata, se desarrolla una rebelión indígena que se asocia con la “Gran Rebelión Andina” de Túpac Amaru en Perú y los Katari de La Paz y Chayanta. En el presente artículo se revisan, agrupan y discuten a partir de dos hipótesis los trabajos que existen sobre la rebelión, considerándose en primer lugar aquellos que proponen que este movimiento consiste en una “repercusión local” de las rebeliones cuzqueña y paceña (especialmente de la primera; y posteriormente los textos que concuerdan en la calificación de la rebelión, pero disienten en las causas. Esto nos permitirá precisar los presupuestos teóricos, bibliografía y fuentes utilizadas en las observaciones pertinentes. Al final se proponen unas conjeturas para el estudio de las rebeliones indígenas en espacios fronterizos a finales del período colonial.

  2. The Politics of Human Rights in Argentina

    OpenAIRE

    Brysk, Alison

    2013-01-01

    Revised edition of 1994 out-of-print Stanford University Press study of human rights protest, social change, and democratization in Argentina.  A symbolic politics analysis of the truth commission, trials, and policy reform in Latin America's most sweeping transition of the 1980's.

  3. Argentina - Women Weaving Equitable Gender Relations

    OpenAIRE

    Stubbs, Josefina

    2008-01-01

    In 2001, after a long period of recession, Argentina faced the greatest economic, political, and institutional crisis in its history. Unemployment reached levels nearing 18 percent and the poverty rate reached a peak of 58 percent in 2002, increasing twofold the number of people living the poverty line and impacting in a disproportionate manner the most vulnerable and poverty stricken fami...

  4. Agua potable y saneamiento en la Argentina

    OpenAIRE

    Auge, Miguel

    2007-01-01

    Este trabajo fue presentado originalmente en el Foro Regional del Agua, con el título “Problemática del Acceso al Agua Potable y al Saneamiento en Argentina”. Dicho foro, organizado por la Defensoría del Pueblo de la Nación Argentina, se desarrolló en Córdoba, en mayo del 2007.

  5. Argentina and Brazil's Relations to the EU

    DEFF Research Database (Denmark)

    Christensen, Steen Fryba

    Analysen diskuterer Argentina og Brasiliens relationer til EU i nyere tid med udgangspunkt i forhandlingerne om en associeringsaftale mellem EU og Mercosur, der igangsattes efter underskrivelsen af en bi-regional rammeaftale i 1995. Fokus er i særlig grad på, hvordan disse relationer bedst forstås...

  6. Sudden death syndrome of soybean in Argentina

    Science.gov (United States)

    Sudden death syndrome (SDS) is one of the most common and widely spread root disease affecting soybean [Glycine max (L.) Merr.] in Argentina where it is an economically important crop. This disease was first discovered in this country in 1992 in the Pampas Region, and the following year in Northwest...

  7. Payenia volcanic province, southern Mendoza, Argentina

    DEFF Research Database (Denmark)

    Søager, Nina; Holm, Paul Martin; Llambias, Eduardo Jorge

    2013-01-01

    The Pleistocene to Holocene Payenia volcanic province is a backarc region of 60,000 km2 in Mendoza, Argentina, which is dominated by transitional to alkaline basalts and trachybasalts. We present major and trace element compositions of 139 rocks from this area of which the majority are basaltic...

  8. Argentina : Gender Equity in the Private Sector

    OpenAIRE

    World Bank

    2010-01-01

    First tested in Mexico in 2003, and most recently applied in 2009 in Argentina, the World Bank has developed a model to incorporate gender equity into private sector organizations while simultaneously enhancing their business. Under the model, participating organizations conduct a self-diagnosis to identify gender biases and gaps in the operations. This baseline is then used to create and ...

  9. Negociación y diplomacia en las fronteras del Chaco: Nuestra Señora de la Concepción de abipones * Negociação e diplomacia nas fronteiras do Chaco: Nuestra Señora de la Concepción de abipones

    Directory of Open Access Journals (Sweden)

    CARINA PAULA LUCAIOLI

    2014-09-01

    Full Text Available Resumen: A lo largo de estas páginas nos hemos propuesto reconstruir y analizar los procesos históricos que desembocaron en la fundación de la reducción de Nuestra Señora de la Concepción de abipones, fundada en 1749 en los espacios de frontera del Chaco austral. Asimismo, presentamos la trascripción y análisis de las Capitulaciones celebradas como corolario de las negociaciones entabladas entre indígenas e hispanocriollos, con la intención de resaltar los aspectos diplomáticos inherentes a las paces que hicieron posible la fundación de la reducción.Palabras clave: Diplomacia – Reducciones – Tratados de Paz – Acuerdos Coloniales. Resumo: Ao longo destas páginas, propusemos reconstruir e analisar os processos históricos que conduziram à fundação da redução de Nuestra Señora de la Concepción de abipones, fundada em 1749 nas áreas de fronteira do sul do Chaco. Apresentamos também a transcrição e análise das capitulações realizadas como corolário das negociações entre indígenas e hispanocriollos, com a intenção de destacar os aspectos diplomáticos que tornaram possível a fundação da redução.Palavras-chave: Diplomacia – Reduções – Tratado de Paz – Acordos Coloniais.

  10. Susceptibilidad a endosulfan y monitoreo de resistencia en poblaciones de Piezodorus guildinii (Insecta, Heteroptera: Pentatomidae, en cultivos de soja de Argentina Susceptibility to endosulphan and resistance monitoring in «green stinkbug» populations, Piezodorus guildinii (Insecta, Heteroptera: Pentatomidae, in soya crops in Argentina

    Directory of Open Access Journals (Sweden)

    Teodoro Stadler

    2006-12-01

    Full Text Available Se determinó la susceptibilidad a endosulfan en diferentes poblaciones de P. guildinii (Westwood, que afectan los cultivos de soja en las provincias argentinas de Santiago del Estero, Chaco y Santa Fe. Se estableció su estatus de susceptibilidad actual para todas las poblaciones estudiadas, y se monitoreó la resistencia a endosulfan en una población de P. guildinii , de Santiago del Estero desde 2002 a 2005, para detectar los cambios en la respuesta al insecticida, con la finalidad de alertar acerca de posibles fallas de control. Los insectos fueron colectados en plantaciones de soja en las localidades de Oliveros, Reconquista, San Justo, Bandera y Coronel Du Graty. Los bioensayos se desarrollaron en laboratorio por el método del tópico, en el marco de los protocolos de la Organización Mundial de la Salud. El estatus de susceptibilidad actual a endosulfan, en las poblaciones de P. guildinii estudiadas fue de: DL95 = 0,680μg/μL [0,489-1,338] a 2,277μg/μL [1,526-5,418]. De los resultados de los bioensayos se desprende que las poblaciones estudiadas, muy distantes geográficamente unas de otras, muestran algunas diferencias en su tolerancia a endosulfan (capacidad de detoxificación, exhibiendo, además, un incremento gradual de la misma desde la zona sur de Sta. Fe (Oliveros hacia el norte (Bandera - Chaco, que probablemente se relaciona con los factores ambientales propios de cada región, y se pueden deber también a procesos toxicodínámicos o toxicocinéticos. La población de P. guildinii de Coronel Du Graty (Santiago del Estero monitoreada desde 2002 a 2005, no mostró un incremento de tolerancia al endosulfan a lo largo del tiempo, que sugiera la presencia de fenómenos de resistencia. Factores poblacionales y ambientales son corresponsables de las variaciones temporales y espaciales de la susceptibilidad de una población a un biocida, esto hace que los límites entre la plasticidad fenotípica y las diferencias en la

  11. SRTM Anaglyph: Las Bayas, Argentina

    Science.gov (United States)

    2001-01-01

    The interplay of volcanism, stream erosion and landslides is evident in this Shuttle Radar Topography Mission view of the eastern flank of the Andes Mountains, southeast of San Carlos de Bariloche, Argentina. Older lava flows emanating from the Andes once covered much of this area. Younger, local volcanoes (seen here as small peaks) then covered parts of the area with fresh, erosion resistant flows (seen here as very smooth surfaces). Subsequent erosion has created fine patterns on the older surfaces (bottom of the image) and bolder, irregular patterns through and around the younger surfaces (upper center and right center). Meanwhile, where a large stream immediately borders the resistant plateau (center of the image), lateral erosion has undercut the resistant plateau causing slivers of it to fall into the stream channel. This scene well illustrate show topographic data alone can reveal some aspects of recent geologic history.This anaglyph was produced by first shading a preliminary elevation model from data acquired by the Shuttle Radar Topography Mission. The stereoscopic effect was then created by generating two differing perspectives, one for each eye. When viewed through special glasses, the result is a vertically exaggerated view of the Earth's surface in its full three dimensions. Anaglyph glasses cover the left eye with a red filter and cover the right eye with a blue filter.Elevation data used in this image were acquired by the Shuttle Radar Topography Mission aboard the Space Shuttle Endeavour, launched on February 11, 2000. The mission used the same radar instrument that comprised the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar that flew twice on the Space Shuttle Endeavour in 1994. The Shuttle Radar Topography Mission was designed to collect three-dimensional measurements of the Earth's surface. To collect the 3-D data, engineers added a 60-meter-long (200-foot) mast, installed additional C-band and X-band antennas, and improved tracking

  12. [Adult mortality differentials in Argentina].

    Science.gov (United States)

    Rofman, R

    1994-06-01

    Adult mortality differentials in Argentina are estimated and analyzed using data from the National Social Security Administration. The study of adult mortality has attracted little attention in developing countries because of the scarcity of reliable statistics and the greater importance assigned to demographic phenomena traditionally associated with development, such as infant mortality and fertility. A sample of 39,421 records of retired persons surviving as of June 30, 1988, was analyzed by age, sex, region of residence, relative amount of pension, and social security fund of membership prior to the consolidation of the system in 1967. The thirteen former funds were grouped into the five categories of government, commerce, industry, self-employed, and other, which were assumed to be proxies for the activity sector in which the individual spent his active life. The sample is not representative of the Argentine population, since it excludes the lowest and highest socioeconomic strata and overrepresents men and urban residents. It is, however, believed to be adequate for explaining mortality differentials for most of the population covered by the social security system. The study methodology was based on the technique of logistic analysis and on the use of regional model life tables developed by Coale and others. To evaluate the effect of the study variables on the probability of dying, a regression model of maximal verisimilitude was estimated. The model relates the logit of the probability of death between ages 65 and 95 to the available explanatory variables, including their possible interactions. Life tables were constructed by sex, region of residence, previous pension fund, and income. As a test of external consistency, a model including only age and sex as explanatory variables was constructed using the methodology. The results confirmed consistency between the estimated values and other published estimates. A significant conclusion of the study was that

  13. CONTENIDO DE POLIAMINAS LIBRES EN PALMAS AFECTADAS POR PUDRICION DEL COGOLLO EN LAS ZONAS CENTRAL Y OCCIDENTAL DE COLOMBIA

    Directory of Open Access Journals (Sweden)

    Hernán Mauricio Romero

    2010-01-01

    Full Text Available La pudrición del cogollo (PC es la principal enfermedad de la palma en Colombia. En las zonas palmeras Central (ZC y Oriental (ZE, las palmas enfermas pueden recuperarse naturalmente. En la Zona Occidental (ZW el proceso de recuperación no es evidente. La recuperación de palmas está ligada a gran actividad meristemática que podría involucrar la acción inductora de metabolitos como las poliaminas (PA. Este trabajo muestra la relación entre poliaminas del meristemo y la capacidad de recuperación de palmas con PC, en dos zonas agroclimáticas diferentes. Poliaminas extraídas del meristemo de palmas sembradas en ZC y ZW, fueron analizadas por HPLC. En ZC, donde existe recuperación espontánea, los niveles más altos de PA se presentan en palmas sanas y en recuperación y a medida que avanza la enfermedad la concentración desciende hasta un mínimo en el estado de PC inicial (PCI. Luego la concentración de PA aumenta hasta el estado de Buena Recuperación (BR donde los valores de poliaminas son más altos que los de palmas sanas. En la ZW, con la enfermedad el contenido de PA aumenta llegando al máximo en plantas sin recuperación y el mínimo se presenta en plantas sanas. Las diferencias entre zonas pueden explicarse por diferentes roles de las poliaminas en plantas. En la ZC la cantidad elevada de PA en palmas sanas o en recuperación funcionaría en la inducción de actividad meristemática, para la recuperación espontánea. En la ZW el aumento en el contenido de PA con la enfermedad induciría la generación de especies reactivas de oxígeno para defensa secundaria de la planta ante la imposibilidad de, a través de incrementos en la actividad meristemática producir rápidamente estructuras sanas que no sean reinfectadas.

  14. La España de Franco desde el exterior: el inacabado camino hacia Occidente (1955-1975

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    Hipólito de la Torre Gómez

    2013-12-01

    Full Text Available Este artículo trata de combinar la ya bien conocida evolución política de la España de Franco con las percepciones que generó en las potencias occidentales. El bienio 1957-1959 (guerra de Ifni y colaboración con Francia; reorientación de la política económica supuso un importante viraje hacia Occidente de la diplomacia de Madrid. El franquismo carecía ya de cualquier alternativa. La modernización socio-económica lo estaba consolidando, al tiempo que preparaba las bases de un futuro democrático tras la desaparición de Franco. Las potencias democráticas tenían que aceptar la realidad de una España nueva, que ya no era aquella quantité négligeable de los primeros tiempos, pero cuya naturaleza política impedía el pleno desarrollo de todas sus potencialidades exteriores. Entre tanto los poderes occidentales debían ir apostando por el momento de la sucesión. This article tries to combine the wellknown political developments in Franco’s Spain and the perceptions generated by these in Western powers. The biennium 1957-1959 (War of Ifni and collaboration with France; reorientation of economic policy was a major turning point in Madrid’s diplomacy towards the West. Franco´s regime was already a reality without choice. Socio-economic modernization was backing the dictatorship, while laying the foundations for a democratic future after the Caudillo´s demise. The western powers had to accept the reality of this New Spain, which was no longer the quantité négligeable of early days, but whose political hindrances prevented the full development of its international potential. Meanwhile, the democracies had to go betting on the succession.

  15. Incidentes en la zona aérea de Canarias y Africa occidental durante la II Guerra Mundial

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    Juan José Díaz Benítez

    2013-11-01

    Full Text Available La política exterior española durante la II Guerra Mundial empezó a virar hacia la neutralidad con la llegada de Gómez Jordana al Ministerio de Asuntos Exteriores en 1942. Sin embrago, la colaboración con el Eje, aún no concluida, provocó, fuertes presiones por parte de los aliados durante el resto de la guerra y alentó la sospecha de que aún continuaba el abastecimiento clandestino de submarinos alemanes en Canarias. Por ello. los aviones aliados sobrevolaron frecuentemente la Zona Aérea de Canarias y África Occidental entre principios de 1943 y el verano de 1944, provocando la reacción de las baterías de artillería antiaérea españolas e incluso la intervenci6n de los cazas con base en Gando. En ningún momento las fuerzas españolas intentaron derribar a los aviones aliados que atravesaban las aguas territoriales, sino sólo avisarlos para que se retiraran. No obstante, los aviones aliados persistieron, dando lugar a graves incidentes que estuvieron punto de ocasionar una fatalidad. Finalmente, las prolongadas gestiones diplomáticas emprendidas a finales de 1943 acabaron con estos incidentes, los cuales son un ejemplo olvidado de las tensas relaciones entre España y los aliados durante el declive del Eje.Spanish foreign policy through World War II turned to the way of neutrality after Gómez Jordana arrived at the Ministry of Foreign Affaires in 1943.  Howver, the persistent aid to tha Axis rose strong pressures by the Allies for the rest of the war and encouraged them for searching German U-boots at the Canary Islands. So Allied airplanes frequently flew over the Canary Islands and West Africa Aerial Zone between the beginning of 1943 and the summer of 1944, tempting the Spanish anti-aircraft batteries and the fighters based in Gaildo Gando reaction. The Spanish forces never tried to destroy the Allied aircrafts, but baut only warned them to keep away from yje Spanish aerial zone. Nevertheless, Allied planes still went on

  16. La Evolución de la Lanza en Occidente (Piezas de Hierro de Hallstatt al Siglo XV

    Directory of Open Access Journals (Sweden)

    Cirlot, Juan Eduardo

    1967-12-01

    Full Text Available See Abstract in Spanish.

    DETERMINAR la evolución de la lanza es difícil, incluso en el área occidental. Fijar el período a que corresponde una determinada pieza con frecuencia implica los más graves problemas, y la posibilidad de error siempre está al acecho. Naturalmente, seriar cronológicamente lanzas de fecha determinada por hallazgos arqueológicos precisos: excavaciones de ruinas, tumbas, etc., es fácil. Pero aplicar los resultados que se obtienen con esta organización supuesta ya no lo es tanto. Ello se debe esencialmente a un hecho: la falta de caracterización estilística suficiente en gran número de piezas, aunque es innegable que hay otras cuya forma «dice» con claridad a qué mundo cultural pertenecen. Complementa esa falta de caracterización la riqueza tipológica que suele darse en cada período. El canon varía con libertad e igualmente las dimensiones e incluso la técnica. Para el coleccionista de lanzas, o para el investigador que se enfrenta con piezas que no proceden de hallazgos fechados, es muy arduo, pues, saber con aproximación a qué época y lugar corresponden tales armas. Tiene a su disposición varios elementos de juicio: la comparación con las armas procedentes de hallazgos fechados, la «calidad» (textura de la pieza, es decir, su aspecto táctil, que acaba por ser inconfundible o poco menos para el que frecuenta los objetos antiguos. Finalmente, por escasa que sea la «caracterización estilística», siempre hay alguna, y ayuda a corroborar o a rectificar las hipótesis formuladas con la base de los dos principios primeros.

  17. Alcance y límites del intercambio comercial entre la Unión Soviética y los países de Europa occidental entre 1980 y 1990

    OpenAIRE

    Claudio Quiroga, Gloria

    1994-01-01

    La tesis que se presenta pretende profundizar en las relaciones comerciales entre la URSS y europa occidental, con el propósito de conocer el alcance que tuvieron mas allá de las cifras estadísticas. Después de analizar el marco general del comercio exterior soviético, la tesis analiza los elementos comunes y diferenciadores de los intercambios con cada uno de los países de europa occidental, estableciendo determinadas tipologías. Por ultimo, se estudia el impacto que estas relaciones tuviero...

  18. Jerarquía de valores en países de la Europa Occidental: una comparación transcultural

    Directory of Open Access Journals (Sweden)

    MARÍA ROS

    1995-01-01

    Full Text Available Hemos usado la teoría transcultural de los valores humanos desarrollada por Schwartz (1992a para analizar y comparar la jeararquía de valores de diez países de Europa occidental con respecto a la importancia de los valores en un conjunto de países del resto del mundo. Hemos encontrado que el conjunto de naciones de Europa Occidental comparten un perfil único de valores que las distingue del resto de los países. Este perfil se caracteriza por la alta prioridad que atribuyen a los valores de compromiso igualitario, autonomía intelectual y armonía y por la baja prioridad que otorgan a los valores de jerarquía y conservación. Estos resultados son explicados acudiendo a algunos factores socio-estructurales, políticos y económicos, compartidos por estos países y que les diferencian de los demás.

  19. Evaluación por competencias y estimación de potencial en las empresas eléctricas de occidente

    Directory of Open Access Journals (Sweden)

    Mónica Peñaloza

    2007-01-01

    Full Text Available La investigación tuvo como objetivo evaluar las competencias y estimación de potencial en las empresas eléctricas de occidente, tomando en cuenta las preferencias psicológicas, técnicas, operativas, administrativas y de seguridad. La muestra objeto de estudio fue de tipo censal, estuvo conformada por 50 supervisores. La investigación fue de tipo descriptiva bajo la modalidad de campo. Se aplicó un instrumento dirigido a los supervisores de las empresas del sector eléctrico, para medir las variables competencias y estimación de potencial, con preguntas cerradas de cuatro alternativas: siempre, casi siempre, algunas veces y nunca. El instrumento fue sometido a un proceso de validez y confiabilidad de contenido y construcción interna. Se concluyó que existe la necesidad de aplicar un instrumento de evaluación y estimación de potencial que direccionen las competencias laborales del personal, arrojó un 89%, lo cual presentó la urgencia de diagnosticar y evaluar constantemente las nuevas demandas del entorno, no solo para el tiempo presente, sino para proyectar las acciones futuras. Se recomendó proponer un instrumento de evaluación de competencias y estimación de potencial, que debe ser sometido a consideración por las empresas eléctricas de occidente para su aplicación.

  20. The tectono-magmatic evolution of the occidental terrane and the Paraiba do Sul Klippe within the Neoproterozoic Ribeira orogenic Belt, Southeastern Brazil

    International Nuclear Information System (INIS)

    Valladares, Claudia Sayao; Duarte, Beatriz Paschoal; Heilbron, Monica; Ragatky, Diana

    2000-01-01

    The occidental Terrane is envisaged as the eastern/southeastern reworked margin of the Sao Francisco/Rio de la Plata plate associated with and E-trending subduction under the Congo plate. The Paraiba do Sul Klippe is part of the Oriental Terrane, envisaged as a portion of the Congo plate. A collisional-stage resulted in intense westward deformation of the Occidental Terrane under intermediate pressure metamorphism (syn-D1+D2 events). A late-collisional stage resulted in subvertical folding and steep shear zones (D3 event). Both stages were associated with voluminous crustal-derived granites. U-Pb and Sm-Nd geochronology as well as geochemical and structural data point to three magmatic episodes: a syn-collisional stage 1; a syn-collisional stage 2; and a late-collisional stage. This paper presents a magmatic evolutionary model for this crustal segment of the Ribeira orogenic belt based on new geological data of Brasiliano granites and data available in the literature. (author)

  1. Ligas Agrarias en Chaco y Corrientes. Experiencias de organización campesina en contextos de transformación territorial

    Directory of Open Access Journals (Sweden)

    Analía Percíncula

    2012-01-01

    Full Text Available La última dictadura militar arrasó con los procesos organizativos de todo el país, a la vez que introdujo las bases del modelo de acumulación neoliberal. En el nordeste argentino esto implicó, entre otras cosas, la represión y desarticulación de las Ligas Agrarias Chaqueñas y de las Ligas Agrarias Correntinas, organizaciones que en ambos casos representaron las reivindicaciones de los sectores rurales subalternos. Paralelamente, se produjo el desmantelamiento de las producciones de algodón en el Chaco y de tabaco criollo en Corrientes, las cuales estaban en manos de productores directos, quienes se habían organizado en sus respectivas Ligas Agrarias.En este trabajo proponemos un acercamiento, en clave comparativa, a las transformaciones de la estructura agropecuaria que caracterizó a ambas provincias hasta la década del 70 y los actores colectivos conformados a partir de dicha red de relaciones socioeconómicas y políticas, es decir, las Ligas Agrarias Chaqueñas y Correntinas.

  2. Exploring the biological activity of condensed tannins and nutritional value of tree and shrub leaves from native species of the Argentinean Dry Chaco.

    Science.gov (United States)

    García, Elisa M; Cherry, Nicole; Lambert, Barry D; Muir, James P; Nazareno, Mónica A; Arroquy, Jose I

    2017-11-01

    Tropical tree or shrub leaves are an important source of nutrients for ruminants and a potential source of biologically active compounds that may affect ruminal metabolism of nutrients. Therefore, eight woody species from the native flora of Argentinean Dry Chaco, rich in secondary compounds such as condensed tannins (CT), were assessed for their nutritional value, CT fractions and in vitro true digestibility of dry matter, as well as biological activity (BA). Differences among species were found in contents of total phenol, protein-precipitating phenols (PPP), bound proteins to PPP (BP) and BP/PPP (P value and bioactivity among species. Those with the greatest CT were not necessarily those with the most BA. Caesalpinia paraguariensis, S. balansae and L. divaricata were the most promising species as native forage CT sources. Cercidiurm praecox (20.87% CP; 18.14% acid detergent fiber) and Prosopis nigra (19.00% CP; 27.96% acid detergent fiber) showed the best (P ≤ 0.05) nutritive values. According to their nutritive traits, these species might be complementary in grass-based ruminant diets. © 2017 Society of Chemical Industry. © 2017 Society of Chemical Industry.

  3. Dramatic decrease in prevalence of soil-transmitted helminths and new insights into intestinal protozoa in children living in the Chaco region, Bolivia.

    Science.gov (United States)

    Macchioni, Fabio; Segundo, Higinio; Gabrielli, Simona; Totino, Valentina; Gonzales, Patricia Rojas; Salazar, Esteban; Bozo, Ricardo; Bartoloni, Alessandro; Cancrini, Gabriella

    2015-04-01

    We assessed the prevalence of intestinal parasites among 268 2-12-year-old children living in rural areas, small villages, and semi-urban areas of the Chaco region, south-eastern Bolivia. The overall parasitism was 69%. Only protozoa, helminths, or co-infections were observed in 89.2%, 5.9%, or 4.9% of the positive children, respectively. A significant progressive increase in overall parasite prevalence was found when passing from rural areas to small villages and semi-urban areas. The most commonly found species were Entamoeba coli (38.4%), Giardia intestinalis (37.7%), and Blastocystis spp. (16%). Hymenolepis nana was the most prevalent helminth (5.6%), followed by Ascaris lumbricoides and hookworms (1.5% and 0.4%) evidenced only in rural areas and in villages. Molecular diagnostics identified Blastocystis subtypes 9 and 2, and 5 infections by Entamoeba histolytica and 4 by Entamoeba dispar. The dramatic decrease in prevalence of soil-transmitted helminths with respect to that observed about 20 years ago (> 40%) evidences the success of the preventive chemotherapy intervention implemented in 1986. Health education and improved sanitation should be intensified to control protozoan infections. © The American Society of Tropical Medicine and Hygiene.

  4. Dramatic Decrease in Prevalence of Soil-Transmitted Helminths and New Insights Into Intestinal Protozoa in Children Living in the Chaco Region, Bolivia

    Science.gov (United States)

    Macchioni, Fabio; Segundo, Higinio; Gabrielli, Simona; Totino, Valentina; Gonzales, Patricia Rojas; Salazar, Esteban; Bozo, Ricardo; Bartoloni, Alessandro; Cancrini, Gabriella

    2015-01-01

    We assessed the prevalence of intestinal parasites among 268 2–12-year-old children living in rural areas, small villages, and semi-urban areas of the Chaco region, south-eastern Bolivia. The overall parasitism was 69%. Only protozoa, helminths, or co-infections were observed in 89.2%, 5.9%, or 4.9% of the positive children, respectively. A significant progressive increase in overall parasite prevalence was found when passing from rural areas to small villages and semi-urban areas. The most commonly found species were Entamoeba coli (38.4%), Giardia intestinalis (37.7%), and Blastocystis spp. (16%). Hymenolepis nana was the most prevalent helminth (5.6%), followed by Ascaris lumbricoides and hookworms (1.5% and 0.4%) evidenced only in rural areas and in villages. Molecular diagnostics identified Blastocystis subtypes 9 and 2, and 5 infections by Entamoeba histolytica and 4 by Entamoeba dispar. The dramatic decrease in prevalence of soil-transmitted helminths with respect to that observed about 20 years ago (> 40%) evidences the success of the preventive chemotherapy intervention implemented in 1986. Health education and improved sanitation should be intensified to control protozoan infections. PMID:25711609

  5. Organización jurídica de la colonialidad del poder en el Territorio Nacional del Chaco (1884-1951

    Directory of Open Access Journals (Sweden)

    Paz Concha Elizalde

    2016-12-01

    Full Text Available La producción capitalista produjo en los jóvenes Estados nacionales latinoamericanos determinadas formas jurídicas. Construcciones discursivas para avalar las instituciones que servirían de sostén y reaseguro a la explotación/dominación que, junto con imaginarios sociales, devinieron en normativa y políticas de Estado. La exploración de estas cuestiones en el Territorio Nacional del Chaco (1884-1951 y su relación con la población originaria posibilita revisar la organización jurídica de la colonialidad del poder en el Estado-nación argentino. Puesto que la historia normativa territorial evidencia las sucesivas políticas del Estado central con respecto a las “fronteras internas”; ancladas en la relación subjetiva con la otredad, en la apropiación de los factores de producción y la distribución racial del trabajo y el espacio. Proponemos aquí un recorrido analítico con el fin de explicar la relación vinculante entre las normas jurídicas, la colonialidad del poder y el Estado-nación argentino.

  6. Biodiversity information system of the national parks administration of Argentina

    Directory of Open Access Journals (Sweden)

    Leonidas Lizarraga

    2014-06-01

    Full Text Available Introduction The Biodiversity Information System (BIS of the National Parks Administration of Argentina (NPA was launched in 2002, with the support of the Global Environmental Fund (GEF through the Biodiversity Conservation Project in Argentina. The BIS consists of a set of thematic databases and Geographic Information System (GIS set to support management decisions, and to provide information to the general public on the national protected areas of Argentina. Currently, the BIS-NPA progr...

  7. Argentina : tous les projets | Page 4 | CRDI - Centre de recherches ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Région: Argentina, South America, Brazil, Chile, Mexico, North and Central America ... Sujet: WOMEN'S PARTICIPATION, POLITICS, POLITICAL LEADERSHIP, WOMEN'S RIGHTS, GENDER ... Sujet: BIOLOGY, BIODIVERSITY, ECOLOGY.

  8. Argentina : tous les projets | Page 7 | CRDI - Centre de recherches ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Sujet: INTERNATIONAL AGREEMENTS, WOMEN'S RIGHTS, LEGISLATION, ACCESS TO ... SERVICES, GENDER DISCRIMINATION, GENDER EQUALITY, Gender ... Région: Argentina, Bangladesh, Brazil, India, Lebanon, Malawi, Viet Nam.

  9. Argentina : tous les projets | Page 8 | CRDI - Centre de recherches ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    ... INNOVATIONS, INFORMATION TECHNOLOGY, Internet, TEACHING AIDS, ... Région: Argentina, South America, Brazil, Chile, Colombia, Mexico, North and ... Sujet: SOCIAL PARTICIPATION, Civil society, HEALTH SYSTEM, Evaluation.

  10. LAS ESPECIES ARGENTINAS DEL GENERO SICYOS (CUCURBITACEAE.

    Directory of Open Access Journals (Sweden)

    Raúl Martínez Crovetto

    1964-01-01

    Full Text Available El autor estudia las especies del género Sicyos que viven dentro del territorio de la República Argentina; señalando que hasta el presente se han hallado seis. Luego de una diagnosis del género, suministra una clave, descripciones y figuras de cada una de ellas, a fin de facilitar su reconocimiento. Las especies estudiadas son S. malvifolius Griseb., S. polyacanthus Cogn., S. Odanellii Mart.-Crov., S. Kunthii Cogn. (nuevo habitante para la flora argentina, S. Warmingii Cogn, S. Warmingii Cogn. var. longispina Mart.-Crov. (nueva variedad y S. ignarus Mart.-Crov. (especie nueva para la ciencia.

  11. La migracion internacional en Argentina hacia 2010

    Directory of Open Access Journals (Sweden)

    Laura Calvelo

    Full Text Available El artículo presenta los principales lineamientos de la migración internacional en Argentina hacia el año 2010, con detenimiento en el período 2000-2010. En el caso de la inmigración no nativa se basa en información de los censos nacionales de población 2001 y 2010. En el caso de la migración internacional de la población nativa de Argentina el análisis se sustenta en información de censos extranjeros hasta la ronda 2000 y en otras fuentes de datos de los principales países de destino hasta 2010 (Estados Unidos y España.

  12. Measurements of atmospheric fallout in Argentina

    International Nuclear Information System (INIS)

    Canoba, A.C.; Lopez, F.O.; Bruno, H.A.

    1998-01-01

    With the purpose of studying the radioactive fallout present in Argentina from atmospheric nuclear explosions tests that have been conducted recently, an environmental monitoring program, outside the influence of nuclear facilities of Argentina, was undertaken during 1996 and 1997. The levels of Cs-137 and Sr-90 were analysed in samples of air, deposited material (rainwater), milk, an average meal of a standard man and food. During this period, a total of 630 radiochemical analysis were performed on 325 samples of the different matrices described. The concentration levels of the radionuclides analysed in the different environmental matrices are presented and are compared with the values obtained in the environmental monitoring program done during the period 1960-1981. (author) [es

  13. Spent fuel management of NPPs in Argentina

    International Nuclear Information System (INIS)

    Alvarez, D.E.; Lee Gonzalez, H.M.

    2010-01-01

    There are two Nuclear Power Plants in operation in Argentina: 'Atucha I' (unique PHWR design) in operation since 1974, and 'Embalse' (typical Candu reactor) which started operation in 1984. Both NPPs are operated by 'Nucleoelectrica Argentina S.A' which is responsible for the management and interim storage of spent fuel till the end of the operative life of the plants. A third NPP, 'Atucha II' is under construction, with a similar design of Atucha I. The legislative framework establishes that after final shutdown of a NPP the spent fuel will be transferred to the 'National Atomic Energy Commission', which is also responsible for the decommissioning of the Plants. In Atucha I, the spent fuel is stored underwater, until another option is implemented meanwhile in Embalse the spent fuel is stored during six years in pools and then it is moved to a dry storage. A decision about the fuel cycle back-end strategy will be taken before year 2030. (authors)

  14. Cultural Diversity: "Reports from Brazil and Argentina"

    Directory of Open Access Journals (Sweden)

    Célia Regina Rossi

    2007-06-01

    Full Text Available This article tells two experiences of projects carried through in schools of basic education whose thematic it was the work with the cultural diversity, the valuation of other cultures and reflections on the proper culture The work was carried through in two schools: one in the state of São Paulo, the city of Rio Claro where as the thematic one worked was the Hip-Hop and cultural manifestations local Brazilians the second in the capital of a Argentina province, in the city of Paraná where it worked the contact and the relation enter the cultural manifestations of Brazil and Argentina The central objective of this work was to think ways that could lead to the construction of a school that it considered the differences and the learning that happens when these (the differences they are in relation.

  15. Argentina and Brazil: an evolving nuclear relationship

    International Nuclear Information System (INIS)

    Redick, J.R.

    1990-01-01

    Argentina and Brazil have Latin America's most advanced nuclear research and power programs. Both nations reject the Non-Proliferation Treaty (NPT), and have not formally embraced the Tlatelolco Treaty creating a regional nuclear-weapon-free zone. Disturbing ambiguities persist regarding certain indigenous nuclear facilities and growing nuclear submarine and missile capabilities. For these, and other reasons, the two nations are widely considered potential nuclear weapon states. However both nations have been active supporters of the International Atomic Energy Agency (IAEA) and have, in recent years, assumed a generally responsible position in regard to their own nuclear export activities (requiring IAEA safeguards). Most important, however, has been the advent of bilateral nuclear cooperation. This paper considers the evolving nuclear relationship in the context of recent and dramatic political change in Argentina and Brazil. It discusses current political and nuclear developments and the prospects for maintaining and expanding present bilateral cooperation into an effective non-proliferation arrangement. (author)

  16. Rocky Mountain spotted fever in Argentina.

    Science.gov (United States)

    Paddock, Christopher D; Fernandez, Susana; Echenique, Gustavo A; Sumner, John W; Reeves, Will K; Zaki, Sherif R; Remondegui, Carlos E

    2008-04-01

    We describe the first molecular confirmation of Rickettsia rickettsii, the cause of Rocky Mountain spotted fever (RMSF), from a tick vector, Amblyomma cajennense, and from a cluster of fatal spotted fever cases in Argentina. Questing A. cajennense ticks were collected at or near sites of presumed or confirmed cases of spotted fever rickettsiosis in Jujuy Province and evaluated by polymerase chain reaction assays for spotted fever group rickettsiae. DNA of R. rickettsii was amplified from a pool of A. cajennense ticks and from tissues of one of four patients who died during 2003-2004 after illnesses characterized by high fever, severe headache, myalgias, and petechial rash. The diagnosis of spotted fever rickettsiosis was confirmed in the other patients by indirect immunofluorescence antibody and immunohistochemical staining techniques. These findings show the existence of RMSF in Argentina and emphasize the need for clinicians throughout the Americas to consider RMSF in patients with febrile rash illnesses.

  17. Investment in Renewable Energies in Argentina

    OpenAIRE

    Marina Recalde

    2017-01-01

    This article analyzes how the enabling conditions of the energy policy of a developing country such as Argentina, are crucial for the deployment of renewable energy investments. The conclusions highlights that the low institutional quality of the country shapes enabling conditions and reduce effect of the instruments of the energy policy, dropping incentives for investment in renewable technologies in the country. Therefore, in order to promote renewable technologies investments efficiently, ...

  18. Investment in Renewable Energies in Argentina

    Directory of Open Access Journals (Sweden)

    Marina Recalde

    2017-05-01

    Full Text Available This article analyzes how the enabling conditions of the energy policy of a developing country such as Argentina, are crucial for the deployment of renewable energy investments. The conclusions highlights that the low institutional quality of the country shapes enabling conditions and reduce effect of the instruments of the energy policy, dropping incentives for investment in renewable technologies in the country. Therefore, in order to promote renewable technologies investments efficiently, the institutional framework of countries must be seriously improved.

  19. Area Handbook Series: Argentina: A Country Study

    Science.gov (United States)

    1985-08-01

    votes after a campaign that emphasized firm opposition to the military government and verbal attacks on the trade union leadership of the PJ...legal pro- cedures that were designed especially for these cases. The trials were open to the public, evidence would be taken verbal - ly instead of...1981,144-45. Terrera, Guillermo Alfredo. Geopolitica Argentina: Poblacion, fronteras, comunicaciones , antropologia. Buenos Aires: Edi- torial Plus

  20. Memories of the armed struggle in Argentina

    Directory of Open Access Journals (Sweden)

    Laura Margarita Pasquali

    2013-06-01

    Full Text Available This article presents and develops some of the edges on working of the guerrilla that emerge in the memories of the former militants of the armed organizations in Argentina. Beginig from this journey we will have access to the registration that one has presently on it, which will allows us to establish part of the subjective environment of the moment, the main characters consideration of the activism and their significance in the general context of the militancy.

  1. Burden of Serious Fungal Infections in Argentina

    Directory of Open Access Journals (Sweden)

    Fernando O. Riera

    2018-04-01

    Full Text Available The number of fungal infections at any given time in Argentina is not known. Here we estimate the burden of serious fungal infections in Argentina for the first time. Specific population statistics were searched from multiple sources, local literature was identified, and estimates made. Some additional data were sourced from the Ministry of Health, the Global Initiative for Asthma (GINA program, and national haematology and transplant societies. Argentina has a population of 43.8 million, with 25% of this total being children under 15 years. The predicted candidemia annual incidence is 2193 cases, with 50% occurring in the ICU. At a 6% prevalence rate, an estimated 593,695 women suffer from recurrent vulvovaginal candidiasis. Invasive aspergillosis is relatively common because of high smoking and chronic obstructive pulmonary disease (COPD rates, with 268 cases in immunocompromised patients and another 1938 in the 168,000 COPD patients admitted to hospital. Asthma is also common, affecting 14% of adults, and so allergic bronchopulmonary aspergillosis (ABPA and severe asthma with fungal sensitization (SAFS are major problems. An estimated 432 cases of cryptococcal meningitis (CM—90% of them in AIDS patients—and 1177 cases of Pneumocystis pneumonia (PCP occur each year. The estimated annual case number of disseminated histoplasmosis is 404 in AIDS patients, almost as frequent as CM. Paracoccidioidomycosis annual incidence is estimated at 219, and coccidioidomycosis at 16 cases. At least 881,023 people (>2.01% in Argentina are affected by a serious fungal disease annually, with considerable morbidity and mortality.

  2. The "Private School Advantage" in Argentina

    Directory of Open Access Journals (Sweden)

    Gustavo E. Fischman

    2001-08-01

    Full Text Available Local actors' perceptions of curricular and management changes in two private schools and one neighboring public secondary school in the city of Buenos Aires, Argentina, are analyzed. An exploration was conducted of how, within an ideologically and politically pro-reform context and a widespread acceptance of the "private school advantage," principals, teachers, and students in these schools evaluated the changes (or lack of them in management, teaching, and curriculum orientations of the secondary education sector.

  3. Where is Argentina going in geothermal energy

    Energy Technology Data Exchange (ETDEWEB)

    Mange, J

    1977-01-01

    A brief review is given of geothermal exploration and development in Argentina. Methodical efforts to inventory the geothermal resources of the country were begun in 1974. The Commission set itself the task of locating the geothermal anomalies and then selecting particular anomalies for intensive exploration in order to confirm or discard the possibilities of exploiting the resource. The known principal anomalies are listed and the two selected for intensive exploration are indicated. (JSR)

  4. The Andean Swallow (Orochelidon andecola) in Argentina

    OpenAIRE

    Mazar Barnett, Juan; Pugnali, Germán D.; Pearman Morrison, Mark; Bodrati, Alejandro; Moschione, Flavio; Clark, Ricardo; Roesler, Carlos Ignacio; Monteleone, Diego; Casañas, Hernán; Burgos Gallardo, Freddy; Segovia, José; Pagano, Luis; Povedano, Hernán; Areta, Juan Ignacio

    2016-01-01

    During ornithological studies in the provinces of Jujuy, Salta, and San Juan, we recorded the Andean Swallow Orochelidon andecola at 40 localities. These are the first records in Argentina, and also represent the southernmost for the species. Some of these localities are up to 1500 m lower than the previously known elevational limit (now 800 masl), and up to 1100 km southwards. This is a relatively poorly known swallow, and we present novel natural history data. We found evidence of breeding ...

  5. The "Private School Advantage" in Argentina

    OpenAIRE

    Gustavo E. Fischman

    2001-01-01

    Local actors' perceptions of curricular and management changes in two private schools and one neighboring public secondary school in the city of Buenos Aires, Argentina, are analyzed. An exploration was conducted of how, within an ideologically and politically pro-reform context and a widespread acceptance of the "private school advantage," principals, teachers, and students in these schools evaluated the changes (or lack of them) in management, teaching, and curriculum orientations of the se...

  6. About the Triple A. Argentina 1973 - 1976

    OpenAIRE

    Rostica, Julieta

    2011-01-01

    On May 25, 1973, Peronism returned to govern Argentina after about two decades of prohibition and political persecution. After its establishment, certain crimes began to be signed with “AAA”. The Triple A adopted the particularity of disappearing with the coup on March 24 1976. Why could this organization only exist in a democracy erected in the middle of two military dictatorships? Why did it exist during the very wished Peronist government? The article offers an approach to the Triple A, th...

  7. The Strontium Fingerprint and Footprint: Using 87Sr/86Sr to Find the Sources and Range of Architectural Timber Acquisition of Great House Construction at Chaco Canyon, New Mexico

    Science.gov (United States)

    English, N. B.; Reynolds, A. C.; Quade, J.; Betancourt, J. L.

    2006-12-01

    We describe the spatial and temporal patterns of timber acquisition by great house builders in Chaco Canyon, New Mexico. The 87Sr/86Sr ratios from annually-dated, architectural logs in 10^{th} to 12^{th} century structures are compared to the 87Sr/86Sr of modern tree stands from the surrounding mountains. Although not a stable isotope system, the long half-life of the 87Sr parent (87Rb, t1/2 = 48.8 Ga) yields a stable isotope system on the timescales used to determine the geographic origin of ecosystem resources. The small mass difference among strontium's isotopes eliminates measurable biologic or kinetic fractionation at earth surface conditions. Strontium tracer studies, however, do require distinct end-member ratios to be feasible. Strontium isotopes, alone or in combination with other isotopes, provide a simple way to study and trace the geographic origin of ecosystem resources. Over the 150 km-wide Chaco Basin, 87Sr/86Sr ratios of modern trees range from 0.7055 to 0.7192. 87Sr/86Sr ratios from this and other studies show that during great house construction Chaco Canyon was provisioned with plant materials that came from more than 75 km away in all directions. This includes (1) corn (Zea mays) grown on the eastern flanks of the Chuska Mountains and floodplain of the San Juan River to the west and north, (2) spruce (Picea sp.) and fir (Abies sp.) architectural beams from the high crests of the Chuska and San Mateo Mountains to the west and south, and (3) ponderosa pine (Pinus ponderosa) from the low slopes of the La Platas and San Juan Mountains to the north, the San Pedro Mountains to the east, the Chuska and San Mateo Mountains and nearby mesas. There are no systematic patterns in spruce/fir or ponderosa provenance by great house (Pueblo Bonito, Chetro Ketl, Pueblo del Arroyo) or by time, suggesting the use of stockpiles from a few preferred sources from the beginning of large scale construction in or around Chaco Canyon. This is contrary to the view that

  8. Acute intermittent porphyria in Argentina: an update.

    Science.gov (United States)

    Cerbino, Gabriela Nora; Gerez, Esther Noemí; Varela, Laura Sabina; Melito, Viviana Alicia; Parera, Victoria Estela; Batlle, Alcira; Rossetti, María Victoria

    2015-01-01

    Porphyrias are a group of metabolic diseases that arise from deficiencies in the heme biosynthetic pathway. A partial deficiency in hydroxymethylbilane synthase (HMBS) produces a hepatic disorder named Acute Intermittent Porphyria (AIP); the acute porphyria is more frequent in Argentina. In this paper we review the results obtained for 101 Argentinean AIP families and 6 AIP families from foreign neighbour countries studied at molecular level at Centro de Investigaciones sobre Porfirinas y Porfirias (CIPYP). Thirty-five different mutations were found, of which 14 were described for the first time in our population. The most prevalent type of mutations was the missense mutations (43%) followed by splice defects (26%) and small deletions (20%). An odd case of a double heterozygous presentation of AIP in a foreign family from Paraguay is discussed. Moreover, it can be noted that 38 new families were found carrying the most frequent mutation in Argentina (p.G111R), increasing to 55.66% the prevalence of this genetic change in our population and adding further support to our previous hypothesis of a founder effect for this mutation in Argentina. Identification of patients with an overt AIP is important because treatment depends on an accurate diagnosis, but more critical is the identification of asymptomatic relatives to avoid acute attacks which may progress to death.

  9. La letteratura italiana tradotta in Argentina

    Directory of Open Access Journals (Sweden)

    Silvia Cattoni

    2017-11-01

    Full Text Available In due secoli di storia della letteratura argentina, lo sviluppo della letteratura italiana tradotta è in stretto rapporto con i propositi pedagogici o estetici determinati dal contesto culturale dei diversi momenti storici. In linea di massima, è possibile affermare che, dalla conformazione dello Stato nazionale e durante i primi decenni del XX secolo, la traduzione letteraria mirava ad ampliare l’orizzonte culturale di un lettore che si consolidava al ritmo della fiammante nazione. Nelle fasi successive e in stretto rapporto con la politica culturale portata avanti da Victoria Ocampo a partire dal 1931 tramite la rivista Sur e il suo posteriore progetto editoriale, la traduzione è stata soprattutto una pratica di scrittura che ebbe un’influenza decisiva nell’ordito della letteratura nazionale favorendo il suo rinnovo e incentivando le versioni di traduttori argentini. Fu questa un’apertura che favorì, durante la seconda metà del secolo, nel contesto della ricezione della letteratura universale, l’ingresso della letteratura italiana in Argentina. Il presente lavoro tratta in maniera sistematica, ma provvisoria, il panorama della letteratura italiana tradotta in Argentina. Lo scopo principale comporta il registro dei momenti più fecondi e l’interpretazione degli esiti ottenuti nei confronti della traduzione nel sistema letterario nazionale.

  10. Aportes para la construcción de una historia de la matemática: Experiencia en el profesorado de matemática en la Universidad Nacional del Chaco Austral, Argentina.

    Directory of Open Access Journals (Sweden)

    Alejandra Santillán

    2011-02-01

    Full Text Available Trabajar en la historia de las matemáticas, obliga a reconsiderar los modelos cognitivos del aprendizaje matemático, los modelos epistémicos tanto de la historia como de la matemática, los objetivos, contenidos y significados de la educación matemática hacia el rol cultural de la matemática. Desde estos supuestos es que pensamos cómo ir filtrando de a poco la historia local en la cátedra de Historia de la Matemática.El presente trabajo es una muestra de cómo trabajar en las aulas del profesorado, la historia local con ojos matemáticos

  11. Problemas y desafíos de la traducción de las lenguas indígenas. Los casos toba y maká de la región del Gran Chaco (Argentina y Paraguay)

    OpenAIRE

    Cristina Messineo; Temis Lucía Tacconi

    2017-01-01

    Este trabajo trata sobre los problemas de la traducción entendida como una actividad translingüística e intercultural que involucra tomar decisiones no solo en el nivel lingüístico (estructural) sino también en el comunicativo y performativo del lenguaje. Con el propósito de abarcar estos dos niveles, seleccionamos, por un lado, dos categorías gramaticales de las lenguas toba y maká: los marcadores de posesión alienable y la evidencialidad. Dado que se trata de categorías no referenciales y p...

  12. Aportes para la construcción de una historia de la matemática: Experiencia en el profesorado de matemática en la Universidad Nacional del Chaco Austral, Argentina

    OpenAIRE

    Alejandra Santillán

    2011-01-01

    Trabajar en la historia de las matemáticas, obliga a reconsiderar los modelos cognitivos del aprendizaje matemático, los modelos epistémicos tanto de la historia como de la matemática, los objetivos, contenidos y significados de la educación matemática hacia el rol cultural de la matemática. Desde estos supuestos es que pensamos cómo ir filtrando de a poco la historia local en la cátedra de Historia de la Matemática. El presente trabajo es una muestra de cómo trabajar en las aulas del profeso...

  13. Contemporary Slavery and the Struggle for Self-Determination: The Case of the Guaraní People from the Bolivian Chaco

    Directory of Open Access Journals (Sweden)

    Aleksandra Bergier

    2015-06-01

    Full Text Available Contemporary Slavery and the Struggle for Self-Determination: The Case of the Guaraní People from the Bolivian Chaco For over a century, the Bolivian Guaraní people have been subjected to infrahuman treatment which involved practices such as slavery, forced labor and servitude. The new agrarian legislation, aimed at reversing the concentration of the economic and social power in the hands of a small regional elite, represented a shift in a state policy, facilitating the access of indigenous peoples to collective land property and thereby enabling them to break away from the conditions of debt bondage and forced labor. The article examines the current situation of the Guaraní and focuses on the changes and challenges that have been introduced to their way of life due to the implementation of the clearing title process which brought about a partial reconstitution of their territory. It presents the recent data on their struggle to redefine and reconstruct their cultural identity and places emphasis on specific cultural elements considered valuable by the Guaraní society: territorial management, native language, customary law and wider inclusion of women in decision-making structures within the indigenous political organization.   Współczesne niewolnictwo i walka o autodeterminację: casus kultury Guaraní z boliwijskiego Chaco Przez ponad stulecie boliwijscy Indianie Guaraní byli przedmiotem nieludzkiego traktowania z powodu praktyk takich jak niewolnictwo, praca przymusowa oraz poddaństwo. Reformy agrarne, których celem była redystrybucja władzy ekonomicznej i społecznej, skoncentrowanej w rękach niewielkiej regionalnej elity, spowodowały zmianę w polityce rządowej, gwarantując dostęp ludów tubylczych do kolektywnej własności ziemi. Proces ten umożliwił przedstawicielom kultury Guaraní zerwanie zależności wynikających z systemu pracy przymusowej i więzienia za długi. Niniejszy artykuł jest poświęcony obecnej

  14. Estructura y organización de los ensambles de roedores de un bosque de la Sierra Madre Occidental, Durango, México Structure and organization of rodent assembles of a forest of the Sierra Madre Occidental, Durango, Mexico

    Directory of Open Access Journals (Sweden)

    ELIZABETH E ARAGÓN

    2009-12-01

    Full Text Available La diversidad biológica de los bosques templados en la región de montaña denominada "Sierra Madre Occidental», México, es rica. Esta zona se encuentra en la Zona de Transición, un área biogeográficamente importante de Norteamérica caracterizada por una gran heterogeneidad ambiental local. Sin embargo, poco se conoce sobre la composición taxonómica y la organización de los mamíferos pequeños nativos y sobre la influencia de los factores ecológicos locales, en particular en tipos de vegetación diferentes. Por lo tanto, se estudió la composición de especies y la estructura de los ensambles de pequeños mamíferos de esta sierra y se proporcionó información sobre el nivel de anidamiento y la detección de patrones en su organización. El área de estudio fue el rancho "El Durangueño", Durango, México. Se muestrearon tres tipos de vegetación diferentes (pastizales y bosques de encino-pino y pino-encino por estación de 2005 y 2006. Los roedores fueron capturados, recapturados e identificados durante tres noches por sitio. Los resultados produjeron 520 individuos (386 capturas, 134 recapturas de 18 especies de mamíferos pequeños (14 ratones, cuatro ardillas de tamaños corporales diferentes, de afinidades neártica, neotropical o compartida; se encontraron endemismos y taxas en alguna categoría de riesgo de extinción. La riqueza y la equitabilidad fueron altas, la diversidad y los niveles poblacionales fueron moderados, a excepción de un bosque de encino-pino con densidad de pequeños mamíferos alta y la dominancia de alguna especie en el bosque de pino-encino, debido probablemente a perturbaciones. El patrón espacial de las especie de tamaño mediano no fue azaroso. El ensamblaje de especies no presentó anidamiento y tuvo una distribución log-normal, con cuatro especies comunes y de amplia distribución (Peromyscus truei, P. maniculatus, Reithrodontomys montanus y Sigmodon leucotis y siete de distribución restringida

  15. La borrachera y sus pre-textos. El beber indígena en la literatura jesuítica sobre Chaco del siglo XVIII.

    Directory of Open Access Journals (Sweden)

    Carlos D. Paz

    2017-08-01

    Full Text Available A pesar de las múltiples y constantes referencias que los misioneros jesuitas hicieron sobre las borracheras, como un problema no sólo de índole moral entre los indígenas, no existe un tratado u obra de referencia dedicada exclusivamente a esa cuestión. El abordaje y descripción de las borracheras es construido por los jesuitas a partir de una mención crítica de un orden social que se fragiliza al punto de generar no sólo muertes si no que a la vez llegaba a constituirse como un marcador social de sentido. El sentido performativo de la borrachera es presentado como un problema de salud que corrompe el cuerpo de la civitas cristiana.             El objetivo del artículo es brindar, en primer lugar, un panorama sobre el sentido social de las borracheras indias en el Chaco del siglo XVIII ponderando los abordajes que realizaron los miembros de la Compañía de Jesús; reflexiones que muestran a las sesiones de bebida como un ‘espejo del alma’ indígena. Un alma unida a cuerpos que se muestran indolentes ante el accionar misional reduccional. En segundo termino reflexionaré sobre la importancia de la conformación de un saber natural que permita no sólo intentar acotar las posibilidades nativas de preparación de bebidas si no que, al mismo tiempo, permita al jesuita conformar para sí una representación mental de una geografía física y social de la sociabilidad nativa ponderando a las borracheras como una parte de aquella naturaleza aunque no recalando en los aspectos ontológicos que movilizaban aquellas pasiones.

  16. Aves y endemismo en los bosques relictos de la vertiente occidental andina del norte del Perú y sur del Ecuador

    Directory of Open Access Journals (Sweden)

    Jeremy N. M. Flanagan

    2013-05-01

    Full Text Available Los bosques relictos de las vertientes occidentales de los Andes del norte del Perú y el sur del Ecuador forman parte de dos regiones, una la denominada región de endemismo tumbesina (caracterizada principalmente por bosques secos y otra, en altitudes mayores, la región de endemismo del sur de los Andes centrales (caracterizada por bosques nublados y páramo. La región tumbesina es reconocida por albergar gran cantidad de aves endémicas, muchas de las cuales están amenazadas, y también por el alto grado de deforestación y fragmentación de sus hábitats naturales. Este artículo presenta un resumen del estado de conservación de dichas aves y bosques, con recomendaciones para mejorar la conservación de los últimos bosques de la vertiente occidental.

  17. RODRÍGUEZ LLERA, Ramón, Japón en occidente. Arquitecturas y paisajes del imaginario japonés, del exotismo a la modernidad.

    Directory of Open Access Journals (Sweden)

    Valeriano Sierra Morillo

    2014-01-01

    Full Text Available El viaje que nos propone Ramón Rodríguez Llera a través de las relaciones entre la arquitectura occidental y la japonesa se nos presenta con la engañosa apariencia de una mirada al despertar del Japón moderno, nacido de la renovación Meiji. No es la única trampa que el desbordante texto esconde tras su ambigua linealidad expositiva. En efecto, la prosa burbujeante con la que nos deleita el autor nos narra de forma exhaustiva y profusamente documentada el camino que recorre el país del Sol Naciente y, particularmente su arquitectura, en los últimos ciento cincuenta años.

  18. FAMILIA, PODER Y ESMERALDAS. Relaciones de género y estructura económica minera en el occidente de Boyacá, Colombia

    Directory of Open Access Journals (Sweden)

    JOHANNA A. PARRA BAUTISTA

    2006-01-01

    Full Text Available LA ORGANIZACIÓN SOCIAL Y CULTURAL DE LA ZONA ESMERALDÍFERA DEL OCCIDENTE DEL departamento de Boyacá (Colombia está relacionada con los insumos de la producción minera, que se reflejan en las transformaciones de las estructuras de parentesco y las adaptaciones de la familia. Este artículo expone una aproximación etnográfica al complejo familiar de la región, con el objeto de comprender la incidencia de las jerarquías en las relaciones de género y en la crianza de los hijos. Por medio del texto se presenta el poder masculino como acción de dominio de medios de producción, y el control femenino como relaciones con otros miembros de la familia nuclear y extensa.

  19. Prevalencia del virus de la hepatitis C en las unidades de hemodiálisis de la región occidental cubana

    OpenAIRE

    Santana Hernández, Rita Rosa; Martínez Córdova, Zuzet; Martínez Echeverría, María Teresa; Mato Luis, Jorge

    2009-01-01

    La población de hemodiálisis constituye un grupo de alto riesgo en el caso de la infección por el virus de la hepatitis C. Se realizó un análisis multicéntrico de la prevalencia de la infección por el virus de la hepatitis C en las unidades de diálisis de la región occidental aplicando las técnicas serológicas y moleculares, y se observó si existían diferencias significativas en cuanto a la aplicación de ambas técnicas. Se obtuvieron valores elevados de prevalencia de anticuerpos anti-VHC en ...

  20. Entre el diálogo y el belicismo: dos actitudes ante el turco desde el Occidente a fines del Medievo

    Directory of Open Access Journals (Sweden)

    Mitre Fernández, Emilio

    2010-12-01

    Full Text Available Four authors of XV central century (Nicholas of Cusa, Juan de Segovia, the humanist Eneas Silvio Piccolomini –pope Pio II– and the Bohemian King George Podiebrad and another of the beginning of Modern Age (Erasmus of Rotterdam show correctly the occidental reaction face to the Ottoman pressure, from the fall of Constantinople (1453 to the Hungarian defeat in Mohacs (1526. They consider two ways to solve the problem: the religious dialogue that leads Turkeys to convert to Christianism and then make legitimate their conquest, for example, the short work of Nicholas of Cusa De pace fidei, and partially the Epistula ad Mahumetem of Pius II, and the foundation of a great alliance of Christian princes: vg. the paneuropean project of George Podiebrad, inspired by the old idea of crusade.

    Cuatro autores del siglo XV central, Nicolás de Cusa, Juan de Segovia, el humanista Eneas Silvio Piccolomini –Papa Pío II– y el rey bohemio Jorge Podiebrad, y otro de principios de la Edad Moderna –Erasmo de Rótterdam– muestran correctamente la reacción occidental frente a la presión del Imperio Otomano, desde la caída de Constantinopla en 1453 a la derrota de Hungría en Mohacs en 1526. Examinan dos formas de resolver el problema: el diálogo interreligioso que busca convertir a los turcos al cristianismo y luego legitimar la conquista, por ejemplo el pequeño libro de Nicolás de Cusa De pace fidei y, en parte, la Epistula ad Mahumetem de Pío II; y la creación de una gran alianza de los príncipes cristianos: vg. el proyecto paneuropeo de Jorge Podiebrad, inspirado en la vieja idea de cruzada.

  1. Iconoclasmo e iconodulia entre oriente y occidente (siglos VIII-IX Iconoclasm and iconoduly between east and west (8th-9th centuries

    Directory of Open Access Journals (Sweden)

    Alfonso Hernández Rodríguez

    2011-10-01

    Full Text Available El siguiente artículo trata acerca de la recepción en el occidente carolingio de la crisis iconoclasta. Reflexiona sobre la forma en que ambas cristiandades trataron el problema que las imágenes representan para las prácticas religiosas y las consecuencias políticas del culto de los iconos. El escrito afirma también que durante los siglos VIII y IX la crisis iconoclasta permitió la aparición de una tradición cristiana latina consciente de sí misma. Por lo tanto, se trató del momento que puso en evidencia el nacimiento de dos formas divergentes de piedad cristiana y la alienación de una respecto de la otra. La cristiandad occidental centrada en el edificio eclesiástico y que privilegiaba la ubicación de lo sagrado en el rito eucarístico, y la oriental cuyo centro era la adoración de las imágenes, con la consecuente multiplicación de los espacios sagrados.The following paper deals with the reception in the Carolingian west of the Byzantine Iconoclast Crisis. It considers the way both Christianities dealed with the problem that images presented to religious practices and the political consequences of iconic worship. The paper also states that during the VIII and IX centuries the iconoclast crisis allowed the emergence of a self conscious Latin Christian tradition. Consequently it was the moment that showed the beginning of two differing ways of Christian piety and the alienation of one towards the other. Western Christianity focused its religion practice in church building and the idea of Sacrality in the Eucharistic Rite. The oriental church, moreovers, centered its practices and theology on icon worship.

  2. Argentina v globalizačních procesech

    OpenAIRE

    Chervets, Tamara

    2009-01-01

    The process of globalization is a very important issue these days. This work will describe the process of globalization in Argentina, especially its economic aspect (foreign direct investments, export and import of goods and services, migration of labor force). I will also mention the history of its development and Argentina's membership in most important international and regional organizations.

  3. Computing and Education in Argentina, Uruguay and Paraguay.

    Science.gov (United States)

    Sadowsky, Manuel

    Although the report is specifically about Argentina, Uruguay and Paraguay, the considerations presented are valid for all of Latin America. In September, 1969, Argentina had approximately 200 electronic computers. The annual growth is estimated at 15-20% and the implementation of teleprocessing and time-sharing systems have made evident the…

  4. All projects related to Argentina | Page 7 | IDRC - International ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Region: Americas, Argentina, South America. Program: Climate Change. Total Funding: CA$ 995,000.00. Youth Smoking in Stressed Environments : Determinants and Resiliency (Argentina, Colombia, Palestine). Project. Numerous studies have shown that the earlier an individual starts smoking, the harder it is to give it up.

  5. Unemployment Assistance and Transition to Employment in Argentina

    NARCIS (Netherlands)

    A. Iturriza (Ana); A.S. Bedi (Arjun Singh); R.A. Sparrow (Robert)

    2007-01-01

    textabstractIn 2001-02, Argentina experienced a wrenching economic crisis. Plan Jefes, implemented in May 2002, was Argentina's institutional response to the increases in unemployment and poverty triggered by the crisis. The program provided a social safety net and appears to have successfully

  6. Argentina: Social Sectors in Crisis. A World Bank Country Study.

    Science.gov (United States)

    World Bank, Washington, DC.

    Based on the findings of a two month visit to Argentina by a World Bank Mission in November/December of 1988, this report summarizes current economic, education, and social policies in Argentina. The four major areas targeted are the social sectors, education, health care, and housing. The analysis identifies critical problems in the organization…

  7. Prospect for Development of Open Access in Argentina

    Science.gov (United States)

    Miguel, Sandra; Bongiovani, Paola C.; Gomez, Nancy D.; Bueno-de-la-Fuente, Gema

    2013-01-01

    This perspective article presents an overview of the Open Access movement in Argentina, from a global and regional (Latin American) context. The article describes the evolution and current state of initiatives by examining two principal approaches to Open Access in Argentina: "golden" and "green roads". The article will then…

  8. Diccionario del español de Argentina

    OpenAIRE

    Haensch, Günther

    2000-01-01

    Diccionario del español de Argentina : español de Argentina - español de España / Günther Haensch ; Reinhold Werner. Madrid : Gredos, 2000. - LI, 729 S. - (Diccionarios contrastivos del español de América)

  9. Pro-Market Educational Governance: Is Argentina a Black Swan?

    Science.gov (United States)

    Beech, Jason; Barrenechea, Ignacio

    2011-01-01

    In this article we explore ways in which pro-market discourses have been interpreted in policy initiatives in Argentina since the 1970s. Our argument is that even though pro-market discourses have guided reforms in many aspects of public policies in Argentina, the arena of education has overall been resistant to taking them up. The first part of…

  10. 1 Estudio Sectorial Sector lácteo de Argentina

    International Development Research Centre (IDRC) Digital Library (Canada)

    Resumen: La producción de leche y productos lácteos conforma en Argentina un importante complejo productivo, de larga trayectoria histórica y gran impacto económico y social. En Argentina, esta industria conforma un oligopolio diferenciado en el que coexisten unas pocas grandes empresas nacionales y ...

  11. 78 FR 46610 - Lemon Juice From Argentina and Mexico

    Science.gov (United States)

    2013-08-01

    ... Argentina and Mexico Determination On the basis of the record \\1\\ developed in the subject five-year reviews... determines that termination of the suspended antidumping duty investigation on lemon juice from Mexico would...), entitled Lemon Juice from Argentina and Mexico: Investigation Nos. 731-TA-1105-1106 (Review). By order of...

  12. 78 FR 47006 - Lemon Juice From Argentina and Mexico

    Science.gov (United States)

    2013-08-02

    ... Argentina and Mexico Determination On the basis of the record \\1\\ developed in the subject five-year reviews... determines that termination of the suspended antidumping duty investigation on lemon juice from Mexico would...), entitled Lemon Juice from Argentina and Mexico: Investigation Nos. 731-TA-1105-1106 (Review). By order of...

  13. CALYPTRANTHES TRICONA (MYRTACEAE, NUEVA CITA PARA LA FLORA ARGENTINA

    Directory of Open Access Journals (Sweden)

    Sara G. Tressens

    1996-01-01

    Full Text Available Calyptranthes tricona D. Legrand (Myrtaceae es reportada por primera vez para la Argentina.  Se incluyen una descripción y una ilustración. Se presenta un clave para la identificación de las especies argentinas de Calyptranthes se da. Se discuten algunas observaciones sobre la nomenclatura C.concinna DC.

  14. La familia Cyatheaceae (Pteridophyta en Argentina The family Cyatheaceae (Pteridophyta in Argentina

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    Gonzalo J Marquez

    2010-06-01

    Full Text Available La familia Cyatheaceae comprende alrededor de 500 especies de helechos arborescentes. Su distribución es pantropical y en Argentina se encuentra representada por 4 especies, reunidas en los géneros Alsophila y Cyathea: A. setosa, A. odonelliana, C. atrovirens y C. delgadii. En este trabajo se presenta una actualización de la información disponible hasta el momento referente a estas especies. Se exponen microfotografías de las esporas, que presentan la superficie con lomos en Alsophila y con cordones en Cyathea. Se ilustran los indusios y escamas de la base de los pecíolos, que son de importancia fundamental para la diferenciación de las especies estudiadas. Asimismo se presenta un mapa de distribución y una clave de las especies que crecen en Argentina.The family Cyatheaceae comprises about 500 species of tree ferns. Their distribution is pantropical and in Argentina is represented by four species, grouped in genera Alsophila y Cyathea: A. setosa, A. odonelliana, C. atrovirens and C. delgadii. In this paper, an update of the available information of the mentioned species is presented. A key to diferentiate the species growing in Argentina, their descriptions and a distribution map are also given. Spores are ridged in Alsophila and with rodlets in Cyathea. Indusia and scales of petiole basis are also illustrated.

  15. Diversity, distribution and floral specificity of tangle-veined flies (Diptera: Nemestrinidae in north west Patagonia, Argentina Diversidad, distribución y especificidad floral de nemestrínidos (Diptera en el noroeste de la Patagonia, Argentina

    Directory of Open Access Journals (Sweden)

    MARIANO DEVOTO

    2006-03-01

    Full Text Available Tangle-veined flies (Nemestrinidae constitute a primitive and rather widespread family among Diptera. The genus Trichophthalma occurs in Australia and South America and is the only one in the family with a typically Gondwanian, disjoint distribution. The ecology and distribution of most southern South American species of this genus remains virtually unknown. We studied the diversity, distribution and flower specificity of flower-visiting species of the genus Trichophthalma in the temperate forests of southern South America in ten sites along an east-west rainfall gradient (37-40°S on the eastern slope of the Andes. We recorded nine species of Trichophthalma, which showed an overlapped distribution along the gradient and different degrees of floral specificity. Three species are reported for Argentina for the first time and three are first recorded as flower visitors to the local flora. Our results show that while in southern Africa tangle-veined flies are engaged in highly specialized pollination interactions with long-tubed species, the Trichophthalma spp. of Patagonia share their flowers with a diverse and rather unspecialized visitor fauna among which several species of flies, bees and birds are presentLos nemestrínidos constituyen una familia de Dípteros primitiva y de amplia distribución. El género Trichophthalma se encuentra en Australia y Sudamérica y es el único en la familia con una distribución disjunta típicamente gondwánica. La ecología y distribución de la mayoría de las especies sudamericanas permanecen virtualmente desconocidas. Estudiamos la diversidad, distribución y especificidad floral de las especies del género Trichophthalma de los bosques templados del sur de Sudamérica en diez sitios ubicados a lo largo de un gradiente de precipitación este-oeste (37-40°S sobre la vertiente occidental de los Andes. Registramos nueve especies de Trichophthalma, las cuales mostraron una distribución superpuesta a lo largo

  16. Sistemas de producción de Spondias purpurea (Anacardiaceae en el centro-occidente de México

    Directory of Open Access Journals (Sweden)

    Blanca C Ramírez Hernández

    2008-06-01

    Full Text Available Describimos las características de los agroecosistemas y rasgos morfológicos, físicos y químicos relacionados con la calidad de los frutos de la guayaba, Spondias purpurea L., que se producen en poblaciones silvestres y cultivadas en el centro-occidente de México. Spondias purpurea se desarrolla en suelos rocosos, poco profundos e infértiles, poco aptos para la agricultura tradicional. En los frutos se registró el peso, longitud axial y radial, pH, sólidos solubles totales (SST, azúcares reductores, proteínas y contenido de minerales. El peso promedio de frutos en las variedades cultivadas (20 g resultó superior al de las silvestres (16 g. Las variedades cultivadas registraron en promedio los valores más altos de pH, SST, azúcares reductores y contenido de proteínas (3.3, 12.15º Brix, 0.38 g/100 g y 1.18 g/100 g, respectivamente que las silvestres (3.0, 8.31º Brix, 0.24 g/100 g y 0.14 g/100 g, respectivamente. La productividad de la especie es aceptable (de 0.15 ton ha-1 a 5.0 ton ha-1 dado que requiere de un mínimo de manejo agronómico. Esta especie tiene un contenido nutrimental comparable al de las especies frutales más importantes; además, produce frutos frescos durante los meses secos de la primavera por lo que S. purpurea es fuente de agua y alimento para la fauna silvestre y doméstica. Estas características resaltan su importancia agronómica y ecológica para los ambientes tropicales y subtropicales en donde puede ser utilizada en programas de reforestación por su capacidad para desarrollarse en suelos rocosos infértiles, y en agroecosistemas en los que se practica agricultura de subsistencia. De hecho, el cultivo de S. purpurea puede ayudar a convertir suelos marginales en productivos.Production systems of Spondias purpurea (Anacardiaceae in Central West México. Morphological, physical and chemical traits related with fruit quality characteristics of Spondias purpurea L. agroecosystems were studied in Central

  17. Residual effect of a micro-encapsulated formulation of organophosphates and piriproxifen on the mortality of deltamethrin resistant Triatoma infestans populations in rural houses of the Bolivian Chaco region

    Directory of Open Access Journals (Sweden)

    Abraham Gemio Alarico

    2010-09-01

    Full Text Available The Bolivian Chaco is part of the endemic region of Chagas disease and an area where pyrethroid resistant Triatoma infestans (Hemiptera: Reduviidae populations has been reported. The World Health Organization identified these resistant populations as an important focus for research. The objective of this study was to evaluate the residual effect of a micro-encapsulated formulation containing organophosphate active ingredients and a juvenile hormone analogue (Inesfly 5A IGR on the mortality of T. infestans. Studies took place in rural houses of the Bolivian Chaco that were treated up to 34 months before and evaluated the susceptibility to pyrethroids of the offspring of field collected insects. Thirty houses were randomly selected within three communities to carry out wall bio-assays with T. infestans nymphs. Mortality was recorded 24, 48 and 72 h after wall contact. Eggs laid by females collected in the area were used to obtain first-instar nymphs and carry out pyrethroid susceptibility tests. The wall bio-assays showed that the micro-encapsulated insecticide eliminates T. infestans populations and produces detectable mortality of insects exposed to walls treated 34 months prior to the tests. The discriminant dose of deltamethrin (0.01 mg/mL showed 65% nymph survival, whereas at the highest tested dose (1.0 mg/mL 14% of the nymphs survived. These results show that Inesfly 5A IGR is an appropriate tool for the elimination of intradomestic and peridomestic populations of T. infestans resistant to pyrethroids.

  18. Tobacco industry targeting youth in Argentina

    Science.gov (United States)

    Braun, S; Mejia, R; Ling, P M; Pérez-Stable, E J

    2013-01-01

    Background/aim Argentina has one of the highest cigarette smoking rates among both men and women in the Americas and no legislated restrictions on tobacco industry advertising. The tobacco industry has traditionally expanded markets by targeting adolescents and young adults. The objective of this study was to determine whether and how the tobacco industry promotes cigarettes to adolescents in Argentina. Methods We conducted a systematic search of tobacco industry documents available through the internet dated between 1995 and 2004 using standard search terms to identify marketing strategies in Argentina. A selected review of the four leading newspapers and nine magazines with reported high readership among adolescents was completed. The selected print media were searched for tobacco images and these were classified as advertisements if associated with a commercial product or as a story if not. Results The tobacco industry used market segmentation as a strategy to target Argentinean consumers. British American Tobacco (BAT) undertook a young adult psychographic study and classified them as “progressives”, “Jurassics” or “conservatives” and “crudos” or “spoiled brats”. BAT marketed Lucky Strike to the “progressives” using Hollywood movies as a vehicle. The tobacco industry also targeted their national brands to the conservatives and linked these brands with “nationalistic values” in advertising campaigns. Philip Morris promoted Marlboro by sponsoring activities directed at young people and they launched the 10 cigarettes packet as a starter vehicle. Conclusions The tobacco industry used psychographic segmentation of the population and developed advertising strategies focused on youth. Tobacco control researchers and advocates must be able to address these strategies in counter-marketing interventions. PMID:18299308

  19. Neoliberalism and political actors in contemporary Argentina

    Directory of Open Access Journals (Sweden)

    Juan Manuel Reynares

    2017-11-01

    Full Text Available In this paper we set out a critical reading of the literature on political neoliberal actors in Argentina. We consider that the concentration of these studies in the national level has to do with a definition of neoliberalism as a set of economical and structural macro politics. We propose to define neoliberalism as a technology of government that intends to hegemonize an “enterprise form” in different social spheres, articulating a symbolical framework in a contingent and contentious way. This insight allows analyzing neoliberal identification processes as heterogeneous trajectories with diverse geographic and temporal scopes.

  20. JOURNALISM STUDIES IN ARGENTINA: BACKGROUND AND QUESTIONS

    Directory of Open Access Journals (Sweden)

    Adriana Amado

    2014-06-01

    Full Text Available This article summarizes the background of empirical journalism studies in Argentina.  In recent publications, researchers have consistently underscored the lack of data on the profession and the scarce development of theoretical frameworks related to journalism studies.  The local investigations have prioritized approaches and methods that do not give the whole picture of the population of journalists. Most of the research tends to equate media analysis and media messages with journalism study and keeps on failing to provide data that allows for learning about the working conditions and the professional profile of the Argentinean journalists.

  1. NUEVAS CITAS DE ASCLEPIADACEAE PARA ARGENTINA

    Directory of Open Access Journals (Sweden)

    Sergio A Cáceres Moral

    1989-01-01

    Full Text Available Dos especies no mencionadas anteriormente de la Argentina son tratadas e ilustradas: Oxypetalum molle Hook. et Arn. y Oxypetalum ineanum Fourn. Oxypetalum appendieulatum Mart. et Zucc., Oxypetalum confusum Malme, Oxypetalum jörgensenii Meyer, Oxypetalum microphyllum Hook. et Arn., Oxypetalum pannosum Decaisne, Oxypetalum stipatum Malme, Funastrum flavum (Decaisne Malme y Blepharodon lineare (Decaisne Decaisne se registran por primera vez para la flora de Corrientes ..

  2. Yugoslav teachers in Argentina 1939-1944

    Directory of Open Access Journals (Sweden)

    Stefanović-Banović Milesa

    2014-01-01

    Full Text Available In this paper we present reports of Yugoslav teachers who held classes to immigrants in Argentina 1939-1944, organized by the government of Kingdom of Yugoslavia. Teachers’ reports to Yugoslav Embassy in Buenos Aires testify of Kingdom of Yugoslavia efforts to oppose assimilation and promote and strengthen “Yugoslav national unity”. The reports also describe general social circumstances of Yugoslav immigrants, show various details from their everyday life and contain valuable data on numerous political, economic, social and cultural problems of this diaspora in Argentina and their relationship with motherland. We believe that archive materials presented in this paper opens numerous questions which could be topics of separate researches. Some of them could be the following: To which extent the teachers’ reports represented the actual situation and to which they were shaped to match policy and expectations of Kingdom of Yugoslavia? What was the actual influence of teachers to spreading the “national unity” among immigrants? Have their work left trace in Yugoslav diaspora and in which way? Beside all of the open issues, it is certain that teachers’ reports contain valuable data on immigrants’ everyday life, curriculum, schooling conditions, relationship with motherland, etc. [Projekat Ministarstva nauke Republike Srbije, br. 47016: Interdisciplinarno istraživanje kulturnog i jezičkog nasleđa Srbije. Izrada multimedijalnog internet portala "Pojmovnik srpske kulture"

  3. Basic data for uranium prospecting in Argentina

    International Nuclear Information System (INIS)

    Belluco, A.; Rodriguez, E.; Martinez, C.; Marinkeff, K.

    1977-01-01

    After dealing briefly with the geochemical cycle of uranium in the earth's crust, and indicating the principal conditions under which different types of deposits are formed, the paper goes on to determine the uraniferous are of mainland Argentina (approximately 900000 km 2 ). Since evidence for the presence of uranium and other radioactive elements in many parts of the country has long been available, an attempt was made to systemize the existing information and classify the uraniferous sites so as to determine their temporal, spatial and genetic relationships with the different containing rocks. In addition, a study was made of the factors which contribute to the concentration of uranium in rocks which are accessible to prospecting (litho-stratigraphy, geological history, mettallogenic cycles, etc.). On the basis of these studies and considering the regional geology of Argentina, 21 ''regional environments'' were defined with varying degrees of probability of containing uranium; these environments will be submitted to long-term regional prospecting studies. It was necessary, however, to make a further sub-division into more homogeneous units with more clearly graded levels of priority, with the result that there are 65 ''prospecting units''. Each of these units, in order of priority, will be subjected to systematic prospecting. Exploratory work on a suitable scale will be carried out in the ''uraniferous'' districts of the ''prospecting units''. The main features of Argentine geology relating to the likelihood of uranium occurrences are briefly described, and maps of the large geotechtonic areas and the ''regional environments'' are included. (author)

  4. The industrial nuclear fuel cycle in Argentina

    International Nuclear Information System (INIS)

    Koll, J.H.; Kittl, J.E.; Parera, C.A.; Coppa, R.C.; Aguirre, E.J.

    1977-01-01

    The nuclear power program of Argentina for the period 1976-85 is described, as a basis to indicate fuel requirements and the consequent implementation of a national fuel cycle industry. Fuel cycle activities in Argentina were initiated as soon as 1951-2 in the prospection and mining activities through the country. Following this step, yellow-cake production was initiated in plants of limited capacity. National production of uranium concentrate has met requirements up to the present time, and will continue to do so until the Sierra Pintada Industrial Complex starts operation in 1979. Presently, there is a gap in local production of uranium dioxide and fuel elements for the Atucha power station, which are produced abroad using Argentine uranium concentrate. With its background, the argentine program for the installation of nuclear fuel cycle industries is described, and the techno-economical implications considered. Individual projects are reviewed, as well as the present and planned infrastructure needed to support the industrial effort [es

  5. Derechos humanos y sexualidad en la Argentina

    Directory of Open Access Journals (Sweden)

    Mario Pecheny

    2006-12-01

    Full Text Available Este artículo presenta un panorama de la situación de los derechos que tienen que ver con la sexualidad, en la Argentina contemporánea. Basándose principalmente en la legislación positiva, se presenta en primer lugar una síntesis del sistema legal y político, resumiendo a continuación el proceso de inclusión de los derechos sexuales, sobre todo desde 1983, cuando se recuperó la democracia. Las temáticas abordadas son: igualdad civil y conyugalidad, orientación sexual e identidad de género, reproducción, aborto, violencia de género y violencia sexual, VIH/sida, y explotación y trabajo sexual. El artículo concluye con una reflexión sobre las principales deudas pendientes.This paper presents an overview of the situation concerning the rights related to sexuality in contemporary Argentina. Based specially on the positive legislation, it is primarily presented a synthesis of the legal and political system. Next, the paper summarizes the process of inclusion of the sexual rights, mainly since 1983, when democracy has been recovered. The following issues are addressed: civil equality and conjugality; sexual orientation and gender identity; reproduction; abortion; gender a sexual violence; HIV/Aids; and exploitation and sexual work. The paper ends with a consideration about the still remaining doubts.

  6. Difilobotriasis humana en la Patagonia, Argentina

    Directory of Open Access Journals (Sweden)

    Semenas Liliana

    1997-01-01

    Full Text Available OBJETIVO: El objetivo del trabajo fué detectar hospedadores humanos en la zona andino patagónica argentina, teniendo en cuenta las prácticas de pesca desportiva y la importancia de los salmónidos dentro de la zona. MATERIAL Y METODO: Entre 1986 y 1995 se implementaron Campañas de Información en los laboratorios de Análisis Clínicos de la región andinopatagónica argentina, destinadas a lograr una detección más eficiente de la difilobotriasis, a través de análisis coproparasitológicos. RESULTADOS: Adicionalmente, se confeccionaron planillas destinadas a recoger información sobre las características de la infección, del tratamiento y del paciente. Durante este período se detectaron 13 nuevos casos humanos, por identificación directa del parásito o por la presencia de huevos en materia fecal. Las características de las infecciones responden a las descriptas para el género Diphyllobothrium. CONCLUSIONES: En la región, los salmónidos son los peces predilectos en la pesca deportiva. Estos peces, frecuentemente parasitados con larvas, constituyen la principal fuente de contagio para el hombre al ser consumidos insuficientemente cocidos o ahumados en frío.

  7. Difilobotriasis humana en la Patagonia, Argentina

    Directory of Open Access Journals (Sweden)

    Liliana Semenas

    1997-06-01

    Full Text Available OBJETIVO: El objetivo del trabajo fué detectar hospedadores humanos en la zona andino patagónica argentina, teniendo en cuenta las prácticas de pesca desportiva y la importancia de los salmónidos dentro de la zona. MATERIAL Y METODO: Entre 1986 y 1995 se implementaron Campañas de Información en los laboratorios de Análisis Clínicos de la región andinopatagónica argentina, destinadas a lograr una detección más eficiente de la difilobotriasis, a través de análisis coproparasitológicos. RESULTADOS: Adicionalmente, se confeccionaron planillas destinadas a recoger información sobre las características de la infección, del tratamiento y del paciente. Durante este período se detectaron 13 nuevos casos humanos, por identificación directa del parásito o por la presencia de huevos en materia fecal. Las características de las infecciones responden a las descriptas para el género Diphyllobothrium. CONCLUSIONES: En la región, los salmónidos son los peces predilectos en la pesca deportiva. Estos peces, frecuentemente parasitados con larvas, constituyen la principal fuente de contagio para el hombre al ser consumidos insuficientemente cocidos o ahumados en frío.

  8. Brucellosis in buffalos from Corrientes northeast (Argentina

    Directory of Open Access Journals (Sweden)

    G. Crudeli

    2010-02-01

    Full Text Available Buffalo’s production represents an important option as input source in livestock systems located in areas with little profitability by cattle. In mostly farms, cattle and buffalos are breeding together, due that in Argentina, to carry out buffalo’s production is in an extensive way, with the aim to produce meat – mostly- milk – for this production nutritional supplements are used- and leathers. Brucellosis is zoonic illnesses from bacteria belong to Brucella which caused human human health problems by contaminated food ingestion or to those who are in touch with cattle. In Argentina, exist the National Control an Elimination Program for cattle Brucellosis, which include buffalos also, there is inclosed female vaccination and serologic segregation of positive reactants. Diagnosis techniques ruled for cattle brucellosis are BPA (Buffered Plate Agglutination, Tube seroaglutination and 2MercaptoEthanol. International reference test is Complement Fixation. By means of this present work, we pretend to evaluate the serologic diagnosis utility, ruled to the buffalos and compare obtained results by BPA, SAT and 2ME with Complement Fixation Test. In the present communication are presented results from the use of diagnosis techniques recommended by SENASA (National Service of Sanity and Quality Agro-Food to buffalo’s serums which belong to nine farms from NE Corrientes State. Obtained results show that association o BPA as Screening Test and SAT and 2ME as Confirmated Test has a valid correlation for the detection of positive animals with the reference technique Complement Fixation.

  9. Ten years of SLR production in Argentina

    Science.gov (United States)

    Pacheco, A.; Podestá, R.; Yin, Z.; Liu, W.; Actis, E.; Adarvez, S.; Quinteros, J.; Podestá, F.

    2017-07-01

    SLR technique is a proved astro-geodetic art with a significant power to contribute to Earth and Space Sciences. Therefore, scientific applications of SLR System are able to perform multiple tasks in the fields of Astrometry, Geodesy and Geophysics. The results we show here were obtained from satellite observations made at SLR 7406 Station of Observatorio Astronómico Félix Aguilar (OAFA) in San Juan, Argentina. The telescope was installed early on 2006, in concordance with an International Cooperation Agreement between Universidad Nacional de San Juan, Argentina and Chinese Academy of Sciences. In this abstract we show the current research being done with ILRS 7406 station: Length of day (LOD) and Angular velocity of Earth Rotation, calculated weekly; Pole Motion. ILRS7406 is daily surveying Pole coordinates x and y; Tracking SLR to GNSS constellations. SLR System contributes to the adjustment and validation of satellite GALILEO, GPS, GLONASS, and BEIDOU orbits. Our station is nowadays member of the new ITRF 2014 frame, and these past years has been one of the 3 highest producing SLR Stations on the ILRS net, composed of about 40 stations distributed all around the world. The obtained results during this first 10 years of experience are useful to enhance the traditional collaboration between OAFA and international services such as ILRS, IERS and NASA.

  10. Overview and perspectives for Open Access development in Argentina

    Directory of Open Access Journals (Sweden)

    Sandra Miguel

    2013-04-01

    Full Text Available This paper provides an overview and perspectives for development of the Open Access movement in Argentina, within the global and regional (Latin American context. It outlines the evolution and current state of initiatives around the two main approaches to Open Access, the golden and green roads. The main Open Access policies and support of OA movement by governments in Latin American region, and particularly in Argentina, are highlighted, while recent studies on publishing practices and authors’ positions regarding Open Access are presented. The paper concludes that the prospects for development of OA in Argentina, both through golden and green roads are favorable, with their strengths and shortcomings

  11. El papel de la charrería como fenómeno cultural en la construcción del Occidente de México

    Directory of Open Access Journals (Sweden)

    Cristina Palomar Verea

    2004-04-01

    Full Text Available The role of the ‘charrería’ as a cultural phenomenon in the construction of the Mexican WestThis paper presents an anthropological point of  view of one aspect in the formation of the central  western region of Mexico (particularly the province of Jalisco that has traditionally acted as a  counterweight to the centralized power of the  nation and has led to interesting negotiating positions stemming from both parts. The search for  symbols that could synthesize and represent  ‘Mexicanness’ as emblems for a nascent national  identity led to an emphasis on diverse regional  elements. Nevertheless, the characteristic elements of the central western region of Mexico –  more specifically Jalisco – gradually dominated as  the typical features for a national identity over  other features offered from a countrywide pool.  Due to a variety of reasons, the central western  region of Mexico has played a key role in the formation of a nationalist discourse required to  fortify the modern Mexican State. The proposed  mode of analysis is through the study of the cultural group of ‘charros’ from the State of Jalisco,  on the basis that the idea of the figure of ‘el charro’ – imagined as originating in Jalisco – is a  reference for that which is ‘typically Mexican’,  concentrating symbolic and other functions which  define, among other aspects, internal national  boundaries. This representation has thus become the national emblem ‘par excellence’ that, nevertheless, has been mutating in its symbolic content.Resumen:Desde una perspectiva antropológica se presenta  un aspecto del proceso de conformación de la  región Occidente de México, particularmente de  Jalisco, que ha operado como tradicional instancia-contrapeso del poder central nacional, y que  ha conducido a interesantes negociaciones entre  ambas partes. En el proceso de búsqueda de los  símbolos que pudieran sintetizar y representar

  12. Sociedad occidental al sur: entre conocimiento, riesgo y miedo. Reflexiones en perspectiva bioética y de salud pública.

    Directory of Open Access Journals (Sweden)

    Fabio Rivas Muñoz

    2012-01-01

    Full Text Available La sociedad actual recibe, entre otras denominaciones, modernidad tardía o reflexiva, y sociedad del conocimiento. A fin de explicarla se acude a múltiples abordajes pero sobre todo se advierte su complejidad y su intrincado sistema de relaciones. Se han buscado respuestas a sus más grandes problemas no sólo en la sociología sino también en las variadas formas de combinar análisis sociales con análisis políticos, económicos, culturales y filosóficos. Un papel relevante y difundido juega Ulrich Beck al caracterizar la sociedad del riesgo. Para él, la segunda modernidad tiene que ver con la forma como en occidente se ha ido presentando un cambio en las ideas impulsoras que preconizaban el progreso, el control, el pleno empleo y la explotación de la naturaleza. Fenómenos como la industrialización y el mercado dentro del capitalismo, para mencionar sólo uno de los procesos más influyentes en la sociedad moderna, han desembocado en la globalización, la individualización, la revolución de géneros, el subempleo y las amenazas planetarias, las cuales van conformando su perspectiva de la sociedad del riesgo, como la denomina Beck. Hay, sin embargo, un occidente al norte y otro al sur. Esto igualmente plantea desafíos, nuevas dinámicas y preguntas sobre el mundo y la supervivencia, pero también sobre aspectos centrales para los seres humanos, entre ellos, la salud. ¿Cuáles son las razones para prestar tanta atención al riesgo y que este, a su vez, se inmiscuya en todos los planos de la sociedad? ¿Cómo enfrentar los retos que la sociedad del riesgo plantea al área asistencial? ¿Qué implicaciones tiene hablar de conocimiento, riesgo, miedo y también desconocimiento en la atención en salud? Estas son sólo algunas de las preguntas que surgen de la dinámica social actual. En esta reflexión se tendrán en cuenta las características de la sociedad del riesgo enunciadas por Beck y su relación con los análisis de expertos en

  13. Tabaquismo durante el embarazo en Argentina y Uruguay Smoking during pregnancy in Argentina and Uruguay

    Directory of Open Access Journals (Sweden)

    Fernando Althabe

    2008-02-01

    Full Text Available Argentina y Uruguay están entre los países con mayor proporción de mujeres jóvenes fumadoras. Se desconoce cuál es la proporción exacta de ellas que fuman durante el embarazo así como las características de las que dejan de fumar y las que continúan fumando durante el embarazo. Realizamos una encuesta administrada por un/a entrevistador/a a 1512 mujeres embarazadas de 18 años o mayores (796 en Argentina; 716 en Uruguay, que concurrían a control prenatal en hospitales públicos de grandes conglomerados urbanos. 44% de las mujeres en Argentina y 53% en Uruguay habían sido o eran fumadoras. Durante el embarazo, 11% de las mujeres en Argentina y 18% en Uruguay continuaron fumando. En ambos países, la proporción de mujeres que vive con fumadores, permite fumar en el hogar y regularmente o siempre se encuentra en lugares cerrados con personas que estén fumando fue 49%, 46% y 20% entre las mujeres que nunca fumaron, 67%, 60% y 32% entre las que dejaron, y 78%, 75% y 52% entre las que continuaron fumando respectivamente. El estudio confirma un importante problema de salud pública y documenta que la exposición ambiental persiste en subgrupos de mujeres, aun en aquéllas que dejaron de fumar. Es importante que el sector de salud pública provea acceso a programas efectivos para dejar de fumar durante el embarazo. Cualquier nueva intervención a desarrollar que intente tener un éxito al menos moderado y sostenible, debiera incluir componentes que actúen sobre el entorno fumador de la mujer embarazada que fuma.Argentina and Uruguay are among the countries in which a large proportion of young women smoke. The rate of smokers during pregnancy in both countries is not well known, and data on the characteristics of women who quit smoking during pregnancy compared to those who continue smoking are not available. We conducted a survey including 1512 pregnant women >18 years old (796 in Argentina; 716 in Uruguay, during antenatal visits in

  14. Arsenic contamination of natural waters in San Juan and La Pampa, Argentina.

    Science.gov (United States)

    O'Reilly, J; Watts, M J; Shaw, R A; Marcilla, A L; Ward, N I

    2010-12-01

    Arsenic (As) speciation in surface and groundwater from two provinces in Argentina (San Juan and La Pampa) was investigated using solid phase extraction (SPE) cartridge methodology with comparison to total arsenic concentrations. A third province, Río Negro, was used as a control to the study. Strong cation exchange (SCX) and strong anion exchange (SAX) cartridges were utilised in series for the separation and preservation of arsenite (As(III)), arsenate (As(V)), monomethylarsonic acid (MA(V)) and dimethylarsinic acid (DMA(V)). Samples were collected from a range of water outlets (rivers/streams, wells, untreated domestic taps, well water treatment works) to assess the relationship between total arsenic and arsenic species, water type and water parameters (pH, conductivity and total dissolved solids, TDS). Analysis of the waters for arsenic (total and species) was performed by inductively coupled plasma mass spectrometry (ICP-MS) in collision cell mode. Total arsenic concentrations in the surface and groundwater from Encon and the San José de Jáchal region of San Juan (north-west Argentina within the Cuyo region) ranged from 9 to 357 μg l(-1) As. Groundwater from Eduardo Castex (EC) and Ingeniero Luiggi (LU) in La Pampa (central Argentina within the Chaco-Pampean Plain) ranged from 3 to 1326 μg l(-1) As. The pH range for the provinces of San Juan (7.2-9.7) and La Pampa (7.0-9.9) are in agreement with other published literature. The highest total arsenic concentrations were found in La Pampa well waters (both rural farms and pre-treated urban sources), particularly where there was high pH (typically > 8.2), conductivity (>2,600 μS cm(-1)) and TDS (>1,400 mg l(-1)). Reverse osmosis (RO) treatment of well waters in La Pampa for domestic drinking water in EC and LU significantly reduced total arsenic concentrations from a range of 216-224 μg l(-1) As to 0.3-0.8 μg l(-1) As. Arsenic species for both provinces were predominantly As(III) and As(V). As

  15. Measurements of atmospheric fallout in Argentina; Determinacion del fallout atmosferico en la Republica Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Canoba, A C; Lopez, F O; Bruno, H A

    1998-11-01

    With the purpose of studying the radioactive fallout present in Argentina from atmospheric nuclear explosions tests that have been conducted recently, an environmental monitoring program, outside the influence of nuclear facilities of Argentina, was undertaken during 1996 and 1997. The levels of Cs-137 and Sr-90 were analysed in samples of air, deposited material (rainwater), milk, an average meal of a standard man and food. During this period, a total of 630 radiochemical analysis were performed on 325 samples of the different matrices described. The concentration levels of the radionuclides analysed in the different environmental matrices are presented and are compared with the values obtained in the environmental monitoring program done during the period 1960-1981. (author) 3 refs., 9 tabs. [Espanol] Con el proposito de estudiar la precipitacion radiactiva presente en la Republica Argentina, debido al ensayo de armas nucleares en la atmosfera realizadas en el pasado, se implemento el muestreo ambiental fuera de la zona de influencia de las instalaciones nucleares de la Argentina durante los anios 1996 y 1997. Se determinaron las concentraciones de cesio 137 y estroncio 90 en muestras de aire, deposito de material radiactivo (agua de lluvia), leche, dieta promedio de un individuo estandar y en alimentos varios. Se realizaron, durante el periodo mencionado, un total de 630 determinaciones radioquimicas sobre 325 muestras de las diferentes matrices mencionadas. Se presentan los niveles de concentracion de los radionucleidos analizados en las distintas matrices ambientales y se comparan los valores obtenidos en los monitoreos realizados durante el periodo 1960-1981. (autor)

  16. Solimán el Magnífico y Roxolana. El poder del turco en la cultura visual y escrita de Occidente

    Directory of Open Access Journals (Sweden)

    Cristina Igual Castelló

    2016-12-01

    Full Text Available El artículo pretende analizar la imagen de poder creada en Occidente alrededor de Solimán el Magní co y su esposa Roxolana. Bajo el deseo de entender la magni cencia de ambos sultanes, el escrito se ha estructurado en torno a tres aspectos fundamentales. El primero de ellos se ha centrado en la relevancia de Solimán y su imperio, para hallar la explicación de su capacidad militar y la razón de ser considerado una amenaza para el mundo occidental. Seguidamente se ha presentado el palacio como expresión arquitectónica de poder, además de ser el espacio donde se situaba el harén. Ello ha conducido a re exionar sobre el papel de la mujer en la sociedad turca y se ha profundizado en la gura de Roxolana, la favorita del Gran Turco. Así pues, se han estudiado ejemplos de las crónicas, la literatura de viajes, los libros de indumentaria, los grabados y las pinturas elaborados en nuestro continente a lo largo de los siglos xvi y xvii, puesto que la cultura escrita en comunión con las artes visuales se encargaron de crear la imagen conceptual y grá ca de los grandes gobernadores orientales. The aim of this article is to analyse the images of power surrounding Süleyman the Magni cent and his wife, Roxolana. In order to understand the sultan’s splendour the article deals with three key aspects. e rst one is the palace as an architectural ensemble which reveals the governor’s power. e harem was located there as well, which leads us to re ect the role of women in the Turkisch society, and especially the role of Roxolana, the Great Turk’s favourite. Consequently, we study the chronicles, travel literature, clothing books, engravings and paintings made in the sixteenth and seventeenth century. e writings together with the artworks created the conceptual and graphic images about Roxolana and Süleyman, thereby spreading their magni cence and power.

  17. Desinterés y terror. El destino nihilista de la estética occidental en el L'uomo senza contenuto.

    Directory of Open Access Journals (Sweden)

    Paula Fleisner

    2010-07-01

    Full Text Available En el mismo año en que se publicaba póstumamente el así llamado “último gran tratado moderno de la disciplina estética”, la Teoría Estética de T. W. Adorno, un joven Giorgio Agamben escribía su contribución, marginal pero decisiva, a un debate muy presente en la filosofía italiana por esos días. Se trata del debate en torno a las relaciones entre el destino nihilista de la metafísica occidental, la estética y la política del que se ocupan entre otros el “pensiero debole” de Gianni Vattimo y el “pensiero negativo” de Massimo Cacciari. Este trabajo tiene como objetivo general analizar las tesis del primer libro de Agamben, L’uomo senza contenuto, en cuanto intento por comprender el proyecto estético de Occidente. Allí se afirma que el ingreso del arte en la dimensión estética con la Modernidad responde al desplazamiento de una consideración de la capacidad pro-ductiva humana (la “inquietante” téchne que permite al hombre llevar una cosa del no-ser al ser hacia una mirada centrada en el punto de vista del espectador que puede apreciar “desinteresadamente” la belleza. Pero este proceso, lejos de ser natural, evidencia una crisis del “hacer” humano en general. Si con Aristóteles podía distinguirse entre póiesis (un hacer aparecer o un traer a la presencia como forma de un saber y praxis (un realizar producto de la voluntad, entendida como apetito, como forma de un actuar, en la Modernidad asistimos al solapamiento de la esfera poiética por la de la praxis y a una progresiva reducción de toda actividad productiva al trabajo que, por reducir al hombre a su desnuda vida biológica, es la dimensión más baja de la vida activa. Teniendo en cuenta este diagnóstico agambeniano, me propongo pensar aquí el lugar central que tendría la estética como disciplina filosófica privilegiada para preguntar por las posibilidades actuales de una nueva póiesis y con ella de una “vita nova” para el hombre.

  18. Concentración estacional de micronutrientes en hojas de cuatro especies forestales del Parque Chaqueño, Argentina Seasonal micronutrients concentration in leaves of four forest species from Parque Chaqueño, Argentina

    Directory of Open Access Journals (Sweden)

    Juan Prause

    2012-09-01

    Full Text Available El ciclo de nutrientes es uno de los componentes fundamentales en el funcionamiento de los ecosistemas forestales. Las hojas de diferentes especies forestales muestran distinta composición química y diferencias estacionales en la producción de biomasa atribuidas a las fluctuaciones climáticas y/o cambios en la fenología de las plantas y a la variación en el contenido de nutrientes. El objetivo del trabajo fue analizar la variación estacional de las concentraciones de Fe, Mn, Cu y Zn en hojas de: Gleditsia amorphoides (Ga, Patagonula americana (Pa, Maclura tinctoria (Mt and Astronium balansae (Ab. El sitio de estudio fue localizado en la Reserva Natural Estricta de Colonia Benítez (Chaco, Argentina. Las hojas de cada especie forestal fueron recogidas mensualmente, secadas a 70ºC, se determinó su peso seco y posteriormente se molió. El análisis foliar se realizó por oxidación húmeda empleando una mezcla ternaria HNO -H SO -HclO. Después de la digestión la concentración total de micronutrientes foliares fue determinada por espectrometría de absorción atómica. Las mayores concentraciones de Fe fueron para Mt (76.1mg/kg, Pa (75.2mg/kg, Ab (59.5mg/ kg y Ga (45.3mg/kg. En Mn las más altas concentraciones se detectaron en Pa (54.0mg/kg, Ga (50.0mg/kg, Mt (48.0mg/kg, y la menor en Ab (39.7mg/kg. No se hallaron diferencias significativas entre las especies forestales para Cu foliar en Pa (11.3mg/kg, Ga y Mt (11.0mg/kg y Ab (10.4mg/kg. Las mayores concentraciones foliares de Zn fueron en Mt (347.4mg/kg, Ga (319.9mg/kg, Pa (280.2mg/kg y Ab (255.7mg/kg. En las especies forestales estudiadas, la concentración de los micronutrientes analizados mostraron una errática variación estacional, que puede ser atribuida a las relaciones establecidas entre las especies nativas bajo la fuerte influencia del ambiente, especialmente temperaturas y precipitaciones, durante un largo período de tiempo.Nutrients cycling is a fundamental component in

  19. Robert Muchembled. El Orgasmo y Occidente. Una Historia del Placer desde el Siglo XVI a nuestros días. Buenos Aires: Fondo de Cultura Económica, 2008, 425 págs.

    Directory of Open Access Journals (Sweden)

    Diana Crucelly González Rey

    2012-07-01

    Full Text Available El orgasmo, la voluptuosidad, el disfrute, solían ser un tema tabú en occidente. Robert Muchembled presenta esta historia social, producto de su estancia académica en el Institute for Advanced Study de Princenton, en un extenso argumento que abarca desde el Renacimiento en los siglos XVI y XVII hasta nuestros días en lo que el autor ha denominado “el triunfo del narcisismo”.

  20. Radioactive waste with 14C in Argentina

    International Nuclear Information System (INIS)

    Di Lello, D.S.

    2009-01-01

    14 C is a long half-life radioisotope, which is present in radioactive waste generated during the operation and decommissioning of nuclear power plants. 14 C can also be found in waste generated by medical diagnostic laboratories or any one generated by fields that deal with research and development (mainly connected with the biochemists area). According to international precedents the disposal of 14 C based on the final amount found in radioactive waste and its chemical form have conditioned the design and operation of the facilities (either because of the amount of it or the chemical form in which 14 C was present). We have to take into account that the design of facilities for radioactive waste disposal is included among the obligations of the National Radioactive Waste Management Program (PNGRR). It is absolutely necessary to count with enough information about the characteristics of any waste containing 14 C that is generated in Argentina, in order to be able to fulfil the requirements previously mentioned. The main characteristics of interest in the frame of the present project are: a) the principal reactions that take place for the formation of 14 C; b) The specific concentration of activity in materials where this radio nuclei is formed or is accumulated; c) To know which is the current step in the process of managing these wastes (in Argentina and all over the world). Either if it refers to bulk or conditioned storage, inside the generating facility; d) Transportation possibilities of 14 C under these conditions; e) The accumulated volume and the generation rate of this kind of waste in Argentina. This paper presents an initial collection and evaluation of the information related to the characteristics already mentioned, having gathered published material from the literature and information in the PNGRR up to this moment. The description of the characteristics of the radioactive waste containing 14 C from nuclear power plants, hospitals and research and

  1. Argentina's regulatory body: its communication activities

    International Nuclear Information System (INIS)

    Cesario, Pablo A.; Terigi, Gabriel E.

    2008-01-01

    Full text: The Nuclear Regulatory Authority of Argentina (ARN) is empowered to regulate and control the nuclear activity with regard to radiation and nuclear safety, physical protection and nuclear non-proliferation issues. It must also advise the Executive on issues under its purview. The objective of the Nuclear Regulatory Authority is to establish, develop and enforce a regulatory system applicable to all nuclear activities carried out in Argentina. Two of the goals of this regulatory system are to provide an appropriate standard of protection for individuals against the harmful effects of ionizing radiation, and to maintain a reasonable degree of radiological and nuclear safety in the nuclear activities performed in Argentina. The responsibility of the radiation protection community in performing the tasks to accomplish this goals is twofold. On one hand, it must ensure a high technical quality in performing these functions. It must also provide information on its activities which has to be accurate, comprehensive and understandable. The way a society understands the concept of 'risk' needs to be kept in mind. Risk perception is the subjective judgment that people make about the characteristics and severity of a risk. Cultural theory refers to theories of risk perception that focus on culture, rather than individual psychology as an explanation for differences in risk judgments. It is widely agreed that trust is a key factor in influencing people's perceptions of risk. It is understood there are two main ways trust may impact in risk perceptions: an activity is perceived as more risky if the people or agencies managing it are perceived as untrustworthy; and information presented by trusted sources is given more credibility than information from untrusted sources. One of the primary purposes of ARN's Communication Program is to provide a means whereby those engaged in radiation protection activities may communicate more readily with each other and the public and

  2. The multiple applications of the nuclear techniques in Argentina

    International Nuclear Information System (INIS)

    Manzini, Alberto C.

    2001-01-01

    A review is given of the use of nuclear technology in Argentina, especially in the field of the production of radioisotopes and radiopharmaceuticals, nuclear medicine, and industrial applications. The applications of ionizing radiation are also reviewed

  3. All projects related to Argentina | Page 8 | IDRC - International ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Health Financing, Equity and Poverty in Latin America ... Region: North and Central America, South America, Argentina, Brazil, Chile, Colombia, Costa ... one of the most serious but least publicized public health problems in Latin America.

  4. The bloodsucking biting midges of Argentina (Diptera: Ceratopogonidae

    Directory of Open Access Journals (Sweden)

    Gustavo R Spinelli

    2005-04-01

    Full Text Available A key is presented for the identification of the adults of 54 species of bloodsucking ceratopogonids, 51 of which are known inhabitants of Argentina, and Culicoides uruguayensis Ronderos, C. pifanoi Ortiz, and C. trilineatus Fox, which are known to occur in bordering Uruguay and Paraguay. Wing photographs are provided of females of the 45 species of Culicoides. Three new species of Culicoides Latreille from Northeastern Argentina are described and illustrated: C. austroparaensis Spinelli, C. bachmanni Spinelli, and C. williamsi Spinelli. The following six species are recorded for the first time from Argentina and/or bordering localities in Paraguay: Leptoconops brasiliensis (Lutz, C. gabaldoni Ortiz, C. ginesi Ortiz, C. pifanoi Ortiz, C. pseudocrescentis Tavares and Luna Dias, and C. trilineatus; and C. estevezae Ronderos and Spinelli is newly recorded from Misiones province of Argentina. C. lopesi Barretto is excluded from the Argentinean ceratopogonid fauna.

  5. Bolivia's gas heads for Brazil as Argentina waits - and watches

    International Nuclear Information System (INIS)

    Knight, P.

    1998-01-01

    The first 1,800 km stretch of a 3,400 km natural gas pipeline from Bolivia to Brazil will start operating in December. First planned 50 years ago, the pipeline has long been expected to result in an immediate surge of gas use in Brazil. However, impending deep recession in Brazil makes this prospect less likely despite the power shortages which indicate the need for considerable gas imports. Initially, most Bolivian gas will flow through Brazil to Argentina. But gas production is expanding rapidly in Argentina and the supply contract with Bolivia ends in 1999. Plans are well advanced to build two gas lines into the south of the Brazil from Argentina. Ultimately, it is anticipated that Argentina, which has abundant reserves and a virtually saturated domestic market, will become the principal source of natural gas for Brazil. (UK)

  6. The regulatory control of radioactive sources in Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Rojkind, Roberto Hector [Autoridade Regulatoria Nuclear, Buenos Aires (Argentina)

    1997-12-31

    Argentina has been conducting nuclear activities for more than forty years, and as early as in 1956 established a Regulatory Authority. Procedures for compliance monitoring and enforcement have been in use in the regulatory control of radioactive sources, and regulatory standards and regulations had been set in Argentina, before the accident in Goiania. The conclusions drawn from that accident encouraged in Argentina the improvement of some regulatory procedures and helped to enhance the quality of the regulatory process. Therefore, the effectiveness of the control of spent radioactive sources has gradually increased, and enforcement actions to prevent radioactive sources ending up in the public domain improved. Some lessons learned in Argentina from the accident in Goiania and the main characteristics of an effective enforcement program helpful to prevent radiological accidents in industrial, medical, research and teaching uses of radioactive sources are presented. (author) 9 refs; e-mail: rrojkind at sede.arn.gov.br

  7. Argentina: Political and Economic Conditions and U.S. Relations

    National Research Council Canada - National Science Library

    Sullivan, Mark P

    2006-01-01

    Argentina's restructuring of over $100 billion in defaulted bond debt in June 2005 demonstrated the country's emergence from its 2001-2002 economic crisis that had caused severe stress on the political system...

  8. Nuclear safeguards in Brazil and Argentina: 25 years of ABACC

    Science.gov (United States)

    Kassenova, Togzhan

    2017-11-01

    As possessors of advanced nuclear technology, Brazil and Argentina bear special responsibility for helping the international community and neighbors in their region feel confident that their nuclear programs are peaceful, secure, and safe. Over the past 25 years, the Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials (ABACC) has played an indispensable role in strengthening such confidence by implementing nuclear safeguards in the two countries. Today, ABACC carries out safeguards inspections at a total of 76 nuclear facilities in Brazil and Argentina. This article describes how Brazil and Argentina view trends in the global nonproliferation regime and international nuclear safeguards, and explains how these trends relate to unique challenges and opportunities facing Brazil, Argentina, and ABACC.

  9. Tributación del Sector Transporte en Argentina

    OpenAIRE

    Ernesto Rezk

    2004-01-01

    El objetivo general es examinar la carga tributaria efectiva sobre los servicios y las inversiones en infraestructura en los sectores de actividad del Transporte de Carga Terrestre (por camión) y Aéreo en la Argentina.

  10. The heavy water production plant at Arroyito, Argentina

    International Nuclear Information System (INIS)

    Ecabert, R.

    1984-01-01

    The author describes the construction of an industrial heavy water production plant (Planta Industrial de Agua Pesada, PIAP) in Argentina. The heavy water enrichment is based on a hydrogen/ammonia isotope exchange. (Auth.)

  11. Urban agriculture: Rosario, Argentina reaps the benefits | IDRC ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    2010-10-06

    Oct 6, 2010 ... Urban agriculture: Rosario, Argentina reaps the benefits ... Urban agriculture has become a permanent part of the city's fabric, ... The Global Roundtable of Chief Economists highlights global trends and best practices to help ...

  12. All projects related to Argentina | IDRC - International Development ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Program: Governance and Justice ... Region: Argentina, Brazil, Chile, Costa Rica, Paraguay, Uruguay ... Program: Canada-Israel Health Research Program ... and Twitter are having a direct bearing on social inclusion and opportunity in many ...

  13. Record of Diaphorina citri (Hemiptera: Psyllidae) in North West Argentina

    OpenAIRE

    Augier, Lucrecia; Gastaminza, Gerardo; Lizondo, Marcelo; Argañaraz, Manuel; Willink, Eduardo

    2006-01-01

    Se amplía la distribución de Diaphorina citri Kuwayama (Hemiptera: Psyllidae) para el Noroeste Argentino.The distribution of Diaphorina citri Kuwayama (Hemiptera: Psyllidae) is expanded to North West Argentina.

  14. All projects related to argentina | IDRC - International Development ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Program: Governance and Justice ... Region: Argentina, Brazil, Chile, Costa Rica, Paraguay, Uruguay ... Program: Food, Environment, and Health ... and Twitter are having a direct bearing on social inclusion and opportunity in many spheres of ...

  15. The regulatory control of radioactive sources in Argentina

    International Nuclear Information System (INIS)

    Rojkind, Roberto Hector

    1997-01-01

    Argentina has been conducting nuclear activities for more than forty years, and as early as in 1956 established a Regulatory Authority. Procedures for compliance monitoring and enforcement have been in use in the regulatory control of radioactive sources, and regulatory standards and regulations had been set in Argentina, before the accident in Goiania. The conclusions drawn from that accident encouraged in Argentina the improvement of some regulatory procedures and helped to enhance the quality of the regulatory process. Therefore, the effectiveness of the control of spent radioactive sources has gradually increased, and enforcement actions to prevent radioactive sources ending up in the public domain improved. Some lessons learned in Argentina from the accident in Goiania and the main characteristics of an effective enforcement program helpful to prevent radiological accidents in industrial, medical, research and teaching uses of radioactive sources are presented. (author)

  16. Aphanes arvensis (Rosaceae) en el extremo nordeste de la Argentina

    OpenAIRE

    Gustavo Hildt; Héctor A. Keller

    2017-01-01

    Se menciona por primera vez para el nordeste argentino a una hierba adventicia en el nuevomundo. La especie es ilustrada mediante fotografías Fil: Hildt, Gustavo. Universidad Nacional de Misiones; Argentina Fil: Keller, Hector Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina

  17. Allamanda schottii (Apocynaceae: nueva cita para la Flora Argentina

    Directory of Open Access Journals (Sweden)

    Julio A. Hurrell

    2013-01-01

    Full Text Available En este trabajo Allamanda schottii Pohl (Apocynaceae es documentada como nueva cita genérica y específica para la Flora Argentina. La especie fue hallada en la ribera del Paraná, en el norte de la provincia de Corrientes, Argentina. Se incluye su sinonimia, descripción, comentarios sobre su distribución, hábitat, fenología, biología reproductiva, nombres vulgares, usos y observaciones.

  18. CROSSROADS BETWEEN EDUCATION POLICIES AND INDIGENOUS LANGUAGES MAINTENANCE IN ARGENTINA

    Directory of Open Access Journals (Sweden)

    Ana Carolina Hecht

    2010-06-01

    Full Text Available Process of language shift is explained by many researchers since linguistic and anthropological perspectives. This area focuses on the correlations between social processes and changes in systems of use of a language. This article aims to address these issues. In particular, we analyze the links between educational-linguistic policy and the maintenance of the languages spoken in Argentina. In doing so, we explore this field taking into account the linguistic and educational policies implemented about indigenous languages in Argentina.

  19. Argentina's experience with parallel exchange markets: 1981-1990

    OpenAIRE

    Steven B. Kamin

    1991-01-01

    This paper surveys the development and operation of the parallel exchange market in Argentina during the 1980s, and evaluates its impact upon macroeconomic performance and policy. The historical evolution of Argentina's exchange market policies is reviewed in order to understand the government's motives for imposing exchange controls. The parallel exchange market engendered by these controls is then analyzed, and econometric methods are used to evaluate the behavior of the parallel exchange r...

  20. Sectorial analysis of nanotechnology companies in Argentina

    Science.gov (United States)

    Foladori, Guillermo; Lau, Edgar Záyago; Carroza, Tomás; Appelbaum, Richard P.; Villa, Liliana; Robles-Belmont, Eduardo

    2017-06-01

    In this paper, we identify 37 companies that produce nano-enabled products in Argentina. We locate the products of these firms in terms of both their economic sector and position in a value chain. The research was done through a four-step methodology. Firstly, an inventory of firms was created. Secondly, the firms were classified by their economic sector, following the United Nations economic classification. Thirdly, the firms were located within a simple nanotechnology value chain. Finally, the products were classified according to their final destination, being either means of production or final consumer products. The results show that healthcare, cosmetics, and medicine is the most represented sector along the value chain, followed by electronics.

  1. Adequacy features of Nucleoelectrica Argentina Safety Management

    Energy Technology Data Exchange (ETDEWEB)

    Rapoport, H [Nucleoelectrica Argentina S.A., Buenso Aires (Argentina)

    1997-12-01

    The Argentine Nuclear Power Plants (NPP) ATUCHA I (357 Mw, SIEMENS) and EMBALSE (648 Mw, CANDU), both of PHWR type, were owned and operated until August 94 by the Comision Nacional de Energia Atomica (CNEA). Until that date, CNEA, the national agency for nuclear R and D, concentrated three activities or roles: Research, Nuclear Regulations and NPP Operation. Since August 1994 NPP`s are owned and operated by a state electrical company (Nucleoelectrica Argentina S.A.) the nuclear utility supplying 15% of the national electrical generation demand. NASA is going to be privatized according to a recent national law regulating nuclear activities. The transition from a research agency to a commercial company requires the introduction of changes in the management of activities. Mention of these changes is limited to those relating to Safety.

  2. Evaluation of training activities in Argentina

    International Nuclear Information System (INIS)

    Sanda, Alejandro D.

    2003-01-01

    In Argentina, there are two NPPs in operation and one under construction. The personnel at the first NPP built, Atucha-1, were originally trained by the German experts, afterwards there were no serious problems while the plant was still new, but problems arose later, The training program organized locally was found to be 'frozen'. That is why experiences in evaluation of the training effectiveness will be of great help. The global training effectiveness are believed to be achieved if the following goals are reached: less number of non-planned shutdowns due to human errors; less number of correctives works in the equipment, when preventive tasks were performed on them; less dose to perform equipment maintenance; less time to perform equipment maintenance; shorter outages, with less dose; less number of personnel accidents; etc

  3. Researching quality of life in Argentina

    Directory of Open Access Journals (Sweden)

    Graciela Tonón

    2015-09-01

    Full Text Available The study of quality of life considers at the same time objective and subjective circumstances of people life. In 1995 was created the International Society for Quality of Life Studies (ISQOLS whose purposes are to promote and encourage research in the field of quality-of-life studies and provide an organization through which all academic and professional researchers interested in QOL studies may coordinate their efforts to advance the field of QOL studies within various disciplines. In the case of Argentina since 2004, the Facultad de Ciencias Sociales, Universidad Nacional de Lomas de Zamora has organized the Research Program in Quality of life to develop different kind of projects about quality of life in different fields, trying to be considered by national institutions that decide public policies. 

  4. Health in Argentina under the Military Junta.

    Science.gov (United States)

    Bermann, S; Escudero, J C

    1978-01-01

    The socioeconomic policies of Argentina's Military Junta, in power since March 1976, have led to a sharp impoverishment of the vast majority of the population. In the health sector, facilities which previously were public are being transferred to the private sector, and public hospitals formerly providing free services to the population now charge patients for the care received. As a necessary counterpart to these unpopular measures, a regime of terror has been waged against members of the health team--both those politically active and those considered potentially subversive, particularly the psychiatrists and workers in community health. Differences between the Argentinian situation and previous European fascist patterns are noted, and the possibility of use of the "Argentinian model" in other capitalist countries in crisis is discussed.

  5. Virtual Archaeology in an argentina colonial estancia

    Directory of Open Access Journals (Sweden)

    Florencia Vázquez

    2014-05-01

    Full Text Available This is a first approach to the application of virtual reconstruction techniques of a colonial house. In Argentina it is still uncommon to perform 3D modeling of archaeological sites and especially in historical archeology. As a first step, we used the Google SketchUp to model the country house located on the banks of the Río de la Plata (Buenos Aires. It has historical significance because it belonged to a Spanish councilman, housed hundreds of slaves and was the place where stayed the troops that carried out the Second British Invasion of Buenos Aires. In this case, the 3D modeling was useful for evaluating the future excavationa and activities of preservation of cultural heritage.

  6. MEMORIA Y CULTURA OBRERA EN ARGENTINA

    Directory of Open Access Journals (Sweden)

    Universidad de Buenos

    2010-06-01

    Full Text Available Esta ponencia tiene como objetivo rastrear la existencia de una cultura obrera izquierdista en el interior de la Argentina ha partir de testimonios de obreros, intelectuales y de militantes de izquierda. De esta manera, la Historia Oral como metodología de investigación nos proporcionará una herramienta indispensable para echar luz sobre este tema que ha sido hasta el momento descuidado. Para tal efecto, nos centraremos en ciudades del interior la provincia de Córdoba en la década de1930. A partir de los testimonios recogidos se analizarán los problemas de la memoria de sus protagonistas y su resignificación desde el presente, las nociones que tienen los protagonistas sobre la política, la cultura y la militancia sobre el período estudiado.

  7. Nuclear fuel supply view in Argentina

    International Nuclear Information System (INIS)

    Cirimello, R.O.

    1997-01-01

    The Argentine Atomic Energy Commission promoted and participated in a unique achievement in the R and D system in Argentina: the integration of science technology and production based on a central core of knowledge for the control and management of the nuclear fuel cycle technology. CONUAR SA, as a fuel manufacturer, FAE SA, the manufacturer of Zircaloy tubes, CNEA and now DIOXITEC SA producer of Uranium Dioxide, have been supply, in the last ten years, the amount of products required for about 1300 Tn of equivalent U content in fuels. The most promising changes for the fuel cycle economy is the Slight Enriched Uranium project which begun in Atucha I reactor. In 1997 seventy five fuel assemblies, equivalent to 900 Candu fuel bundles, will complete its irradiation. (author)

  8. OSMUNDACEAE EN ARGENTINA, PARAGUAY Y URUGUAY

    Directory of Open Access Journals (Sweden)

    Marcelo D. Arana

    2015-01-01

    Full Text Available En este estudio se actualiza la taxonomía y distribución de las Osmundaceae, familia de helechos que habitan bosques y humedales subtropicales de la Argentina, Paraguay y Uruguay. Actualmente la familia comprende cuatro géneros, dos de ellos, con una especie cada uno, estan presentes en la región estudiada. Se acepta Osmunda spectabilis como una especie válida, diferente de O. regalis , la que no se encuentra presente en el área de estudio. Se reconoce a nivel de género a Osmundastrum con una única especie O. cinnamomeum var. cinnamomeum . Se incluyen una clave para los géneros, descripciones, la sinonimia relevante para América del Sur, distribuciones e ilustraciones de las especies. Se lectotipifica a Osmunda imbricata, Osmunda palustris y Osmunda spectabilis var. brasiliensis .

  9. MEDIOS, PROTESTA Y EXPERIENCIA EN ARGENTINA

    Directory of Open Access Journals (Sweden)

    María Graciela Rodríguez

    2004-01-01

    Full Text Available El objetivo de este artículo es dar a conocer algunas hipótesis acerca de los modos como se construyen los relatos sobre las protestas populares en Argentina. Para ello expongo los resultados de una etapa de la investigación en la cual se han confrontado el análisis discursivo de textos de medios de comunicación dedicados a la protesta con un corpus de entrevistas a los protagonistas de estas acciones. Los resultados de dicha confrontación muestran la existencia de dos formas distintas de operar sobre el devenir histórico relacionadas no sólo con la distintiva puntuación temporal de la secuencia de los hechos, sino también con los procesos de enmarcado valorativo y su colocación en una serie histórica.

  10. Adequacy features of Nucleoelectrica Argentina Safety Management

    International Nuclear Information System (INIS)

    Rapoport, H.

    1997-01-01

    The Argentine Nuclear Power Plants (NPP) ATUCHA I (357 Mw, SIEMENS) and EMBALSE (648 Mw, CANDU), both of PHWR type, were owned and operated until August 94 by the Comision Nacional de Energia Atomica (CNEA). Until that date, CNEA, the national agency for nuclear R and D, concentrated three activities or roles: Research, Nuclear Regulations and NPP Operation. Since August 1994 NPP's are owned and operated by a state electrical company (Nucleoelectrica Argentina S.A.) the nuclear utility supplying 15% of the national electrical generation demand. NASA is going to be privatized according to a recent national law regulating nuclear activities. The transition from a research agency to a commercial company requires the introduction of changes in the management of activities. Mention of these changes is limited to those relating to Safety

  11. The fourth nuclear power plant in Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Nogarin, Mauro

    2017-01-15

    Since 2006 the nuclear sector in Argentina has aimed at recovering and strengthening its capabilities and facilities. Part of the challenge posed by this revival has been to also accompany the development of activities with a higher level of responsibility for safety and the environment. Among the strategic decisions taken in recent years, one main highlight is the construction of the nuclear power plant CAREM25 entirely with Argentine technology and design under the responsibility of the National Atomic Energy Commission. On February 4, 2015, the Ministry of Federal Planning and the National Energy Administration (NEA) signed the agreement for cooperation and construction of pressurized water reactor (PWR) with ACP-1000 technology, developed in the Peoples Republic of China.

  12. About the Triple A. Argentina 1973 - 1976

    OpenAIRE

    Rostica, Julieta

    2011-01-01

    El 25 de mayo de 1973 el peronismo volvió a gobernar la Argentina tras aproximadamente dos décadas de proscripción y persecución política. Tras su establecimiento, ciertos crímenes comenzaron a ser firmados con “AAA”. La Triple A tuvo la particularidad de desaparecer con el golpe de Estado del 24 de marzo de 1976. ¿Por qué esta organización sólo pudo existir en una democracia erigida en medio de dos dictaduras militares? ¿Por qué existió durante el tan anhelado gobierno peronista? El artículo...

  13. Inserción ocupacional y prácticas laborales en microemprendimientos juveniles : Análisis de algunas experiencias promovidas por programas sociales en la Ciudad de Resistencia (Provincia de Chaco)

    OpenAIRE

    Barbetti, Pablo; Caviglia, Ana Laura

    2009-01-01

    Fil: Barbetti, Pablo Andrés. Universidad Nacional del Nordeste. Facultad de Humanidades; Argentina. Fil: Barbetti, Pablo Andrés. Universidad Nacional del Nordeste. Facultad de Ciencias Económicas; Argentina. Fil: Caviglia, Ana Laura. Universidad Nacional del Nordeste. Facultad de Ciencias Económicas; Argentina. Los microemprendimientos productivos surgen en la última década como una opción alternativa para el tratamiento de la problemática laboral de los jóvenes en América ...

  14. Mirror Coronograph for Argentina (MICA). Primera Luz

    Science.gov (United States)

    Stenborg, G.; Epple, A.; Schwenn, R.; Francile, C.; Rovira, M.

    En Julio de 1997 se terminó con la primera parte de la instalación del ``Coronógrafo de Espejo para la Argentina'' en la estación de altura Carlos U. Cesco (El Leoncito), gracias al esfuerzo de la gente del Max Planck Institut für Aeronomie (Alemania), del OAFA y del IAFE. Dicho coronógrafo forma parte de un programa de ciencia bilateral entre Alemania y Argentina. El propósito del mismo, en conjunción con otros telescopios solares y terrestres, es contribuir a un mejor entendimiento de cuestiones fundamentales de la física solar. Para ello, ya está observando la corona de emisión en el verde (Fe XIV), rojo (Fe X) y Hα entre 1.05 y 2 radios solares aproximadamente. El diseño del instrumento, el cual fuera ya presentado en esta misma reunión en La Plata en 1996, es esencialmente similar al del telescopio LASCO-C1 a bordo del Solar Heliospheric Observatory (SOHO). La adquisición de datos se realiza con un CCD de 1280x1024 pixels, codificando en 12 bits, pudiendo ser el mismo operado en forma remota. En esta reunión presentaremos algunas de las observaciones realizadas durante la puesta a punto del instrumento en el período julio-setiembre de 1997. Asimismo expondremos cómo y por qué sus resultados complementarán a los de su par en el espacio.

  15. Argentina: Camino del desendeudamiento. 1991-2011

    Directory of Open Access Journals (Sweden)

    Pablo Nemiña

    2012-05-01

    Full Text Available El presente artículo analiza las transformaciones de la política financiera en la Argentina durante el período 1991-2011. Para ello, se estudian las principales acciones del Estado orientadas a enfrentar la problemática de la deuda pública y el financiamiento, así como las relaciones establecidas con el sector financiero y el FMI. La evolución de la política financiera argentina resalta uno de los contrapuntos más sobresalientes entre el período de la convertibilidad vigente hasta 2001 y la etapa posterior. El régimen de convertibilidad implicó el sostenimiento de una moneda nacional sobrevaluada, la cual determinó el progresivo incremento de la deuda pública y alentó el proceso de financiarización de la economía. En cambio, el régimen de la posconvertibilidad, apoyado en el mantenimiento de un tipo de cambio competitivo junto al superávit fiscal y comercial, ha contribuido a promover la actividad productiva por sobre la financiera. Esto, junto a la reestructuración de la deuda, ha permitido sostener un proceso de reducción gradual del endeudamiento público en términos relativos, liberando recursos para fomentar el mercado interno. Consecuentemente, con posterioridad a 2002 se observa una erosión de la capacidad de condicionamiento estructural sobre la dinámica del crecimiento de los acreedores, el FMI, y el sector financiero en general, en simultáneo con la obtención de mayores grados de autonomía financiera por parte del Gobierno Nacional. Finalmente, se analizan los desafíos que impone la crisis internacional a la continuación de este sendero.

  16. 222Rn Measurements in Dwellings of Argentina

    International Nuclear Information System (INIS)

    Gnoni, G.; Canoba, A.; Czerniczyniec, M.

    2011-01-01

    Radon gas ( 222 Rn) is responsible of about fifty per cent of the world population dose due to natural sources, being the most important pathway the inhalation of radon progeny, specially indoors. Radon concentration has been measured in dwellings at different locations in Argentina. The places selected to be evaluated are representative of the different geologic zones of the country. Near 3000 dwellings have been analyzed since 1983 up today. The measuring methods used in this case were track etched detectors, electrets and detectors based on activated charcoal adsorption. Two different methods with track etched detectors were used: a simple one, which determines only the average radon concentration, and a second one that measures both radon concentration and the equilibrium factor (F) between radon and its daughters. The last one is a method that uses two Makrofol passive track detectors in the same device. The average radon concentration value obtained from all the dwellings evaluated was 44.2 Bq.m-3. The annual effective dose calculated from this average concentration, using a dosimetric factor of 25 μSv.a- 1. (Bq.m -3 ) -1 , which assumes an equilibrium factor of 0.4, was 1.11 mSv. The average value obtained from the 222 dwellings evaluated by the second method was 49.3 Bq.m -3 and 0,37 the equilibrium factor, resulting the annual effective dose estimated 1,44 mSv. The measured equilibrium factor of 0,37 allows us to verify the assumed equilibrium factor of 0,4. Finally, radon levels in dwellings of Argentina are within the acceptable values for population, not being necessary to implement remedial actions, except in isolate cases that are still under study. (authors)

  17. Del revisionismo al freudomarxismo: los marxistas freudianos en los orígenes de la revolución cultural occidental

    Directory of Open Access Journals (Sweden)

    David Pavón-Cuéllar

    2017-01-01

    Full Text Available Se ofrece una visión panorámica de algunos de los principales encuentros entre el marxismo y el psicoanálisis en el tiempo de entreguerras. Estos encuentros se caracterizan por una revalorización política de lo psíquico, lo singular y lo subjetivo, la cual, en los orígenes de la revolución cultural occidental de la segunda mitad del siglo XX , resulta precursora de l auge de los factor es personal es y micropolítico s en el feminismo, los movimientos juveniles , el combate por la emancipación sexual y otras luchas de las décadas de 1960 y 1970. Se abordan las revisiones freudianas del marxismo en Henri De Man y Max Eastman, la reapropiación marxista de tales revisiones en Antonio Gramsci, José Carlos Mariátegui y Alfonso Teja Zabre, y las propuestas freudomarxistas de Siegfried Bernfeld, Wilhelm Reich y Otto Fenichel.

  18. Culícidos transmisores del virus del Nilo Occidental en el municipio de Jesús Menéndez

    Directory of Open Access Journals (Sweden)

    Marco A. Cruz Cruz

    2015-02-01

    Full Text Available Se realizó un estudio descriptivo de la población de culícidos en el municipio de Jesús Menéndez, Las Tunas, durante el año 2012; con el objetivo de determinar la presencia de nuevas especies de mosquitos que pueden intervenir en la transmisión del virus del Nilo Occidental. El universo lo constituyeron los doce consejos populares del municipio. La captura de larvas y de adultos se realizó de acuerdo a las técnicas normadas en Cuba y según la metodología de la Organización Mundial de la Salud. Se identificaron cinco nuevas especies que son capaces de transmitir el virus: Aedes albopictus (2,1 %, Culex erraticus (0,25 %, Mansonia titillans (0,04 %, Orthopodomia signifera (0,01 % y Uranotaenia lowii (0,05 %. Los consejos populares con más distribución fueron los urbanos: El Batey (48,02 %, Pueblo Viejo (26,7 % y El Canal (16,4 %, donde existe mayor acumulación de agua por parte de la población en diferentes depósitos y criaderos naturales dentro de la zona urbana

  19. Sentido de compromiso en la atención al cliente interno de la gerencia de servicios logísticos PDVSA Occidente

    Directory of Open Access Journals (Sweden)

    Thais Alvarez

    2013-01-01

    Full Text Available La investigación caracterizó el sentido de compromiso en la atención del cliente interno de la gerencia de servicios logísticos en PDVSA Occidente. Se fundamentó el trabajo en Kinsey (2001, Robbins (2001; 2002, Cottle (2005, entre otros. El diseño fue no experimental, transeccional, descriptivo. La población estuvo conformada por 17 directivos de la gerencia en estudio. La data se colectó por medio del instrumento SECOMAC.2008, con una confiabilidad de 0.94 determinada por medio del coeficiente Alfa Cronbach. El resultado global fue alto en sentido del compromiso; sin embargo, dentro de la aparente fortaleza del mismo se encontraron en algunos indicadores fallas específicas que requirieron un análisis más detallado. Se concluyó que indicadores como entusiasmo, empatía y capacidad de respuestas no están del todo definidos en su buen desarrollo y aplicación, mientras que la fiabilidad y metas individuales en el cargo como indicador del compromiso con la gerencia están en condiciones deficientes. Todo ello permite deducir que el cliente interno es todos y cada uno de los integrantes de la empresa, a los cuales es necesario vender primero, el valor del producto o servicio que la organización ofrece y la importancia fundamental que él tiene como representante de la misma.

  20. De dragones, cascos y soldados de fortuna en el Occidente Antiguo. acerca de dos obras recientes sobre el mercenariado galo e hispano

    Directory of Open Access Journals (Sweden)

    García Jiménez, Gustavo

    2015-12-01

    Full Text Available Research on ancient mercenaries is fraught with problems, being the match between the scarce and partial data provided by the literary sources and the archaeological record a tricky and difficult matter. The recent publication of two books dealing with Iberian and Celtic mercenaries, by Raimon Graells and Luc Baray respectively, offers us an opportunity to dwell on a pervading discussion when studying cultural and military dynamics, and long distance relationships in Ancient Western Europe.La actividad mercenaria en la Antigüedad es uno de los campos de estudio más complejos de la investigación histórica, en buena medida debido a la difícil combinación que existe entre los siempre parciales datos de las fuentes literarias y la arqueología. La reciente publicación de dos monografías dedicadas al mercenario ibérico y celta, a cargo respectivamente de Raimon Graells y Luc Baray, nos brinda una magnífica oportunidad para retomar una vieja discusión siempre latente en el estudio de las dinámicas bélicas y culturales, y que nos permite ahondar en las intrincadas relaciones a larga distancia en el Occidente europeo antiguo.