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Sample records for mendoza province argentina

  1. 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...

  2. 76 FR 80870 - Notice of Determination of Pest-Free Areas in Mendoza Province, Argentina

    Science.gov (United States)

    2011-12-27

    ... ;D=APHIS-2010-0032. The first commenter acknowledged Argentina's history of successful Medfly control...] Notice of Determination of Pest-Free Areas in Mendoza Province, Argentina AGENCY: Animal and Plant Health... Southern and Central Oases in the southern half of Mendoza Province in Argentina as pest-free areas for...

  3. 76 FR 51934 - Determination of Pest-Free Areas in Mendoza Province, Argentina; Request for Comments

    Science.gov (United States)

    2011-08-19

    ... acknowledged Argentina's history of successful Medfly control efforts, but stated that APHIS should not relax...] Determination of Pest-Free Areas in Mendoza Province, Argentina; Request for Comments AGENCY: Animal and Plant... received a request from the Government of Argentina to recognize additional areas as pest- free areas for...

  4. 75 FR 36347 - Determination of Pest-Free Areas in Mendoza Province, Argentina; Request for Comments

    Science.gov (United States)

    2010-06-25

    ...] Determination of Pest-Free Areas in Mendoza Province, Argentina; Request for Comments AGENCY: Animal and Plant... received a request from the Government of Argentina to recognize additional areas as pest- free areas for... determined that these areas meet the criteria in our regulations for recognition as pest-free areas. We are...

  5. Discovery of the Sierra Pintada uranium district, Mendoza Province, Argentina

    International Nuclear Information System (INIS)

    Rodrigo, F.; Belluco, A.E.

    1981-01-01

    Since 1956, uranium-bearing minerals have been known to exist in Sierra Pintada, Mendoza Province, Argentina. Based on paragenetic considerations, a first radiometric prospection was carried out, leading to the discovery of two groups of anomalies (Puesto Agua del Toro and Cuesta de los Terneros), such as vein-type deposits, with uraninite and 'yellow minerals' and one sandstone-type deposit (Puesto La Josefa), related to sediments with carbon trash. Some recent geological research and surveys in the area, and a reduced drilling programme carried out on selected anomalies, led to reinterpretation of the potential of the area. Furthermore, and as a result of an airborne radiometric prospection performed in mid-1968, numerous anomalies have been discovered. The main constellation of anomalies, along the flanks of the El Tigre Brachyanticline, occurs in sandstones of Permian age. Explored by 80 000 m of drilling, they have shown the existence of several peneconcordant lens-shaped ore bodies of economic size, with uranophane on the surface and prevailing uraninite and some brannerite, coffinite and davidite below the water table. Reserves exceed 20 000 tonnes of U 3 O 8 . A new regional programme with a 4-km drill-grid initiated in 1978 led to the discovery of new ore bodies which are at present being evaluated. The alternatives and discontinuities during the development of the district, the prospecting and exploration techniques employed, and the results achieved in the different stages of the operation are discussed in detail. This case history attempts to illustrate the developing philosophy which was successfully applied in Sierra Pintada, with emphasis on the following points: (a) the need for adequate geological knowledge of the area; (b) the advantage of a massive survey (in this case, air survey); (c) the necessity for exploration (drilling) in order to define the anomalies and make their evaluation possible; and (d) the convenience of extending exploration

  6. A new species of Liolaemus (Reptilia: Squamata: Tropiduridae from Mendoza province, Argentina

    Directory of Open Access Journals (Sweden)

    Etheridge, Richard

    2001-05-01

    Full Text Available Una nueva especie del complejo Liolaemus darwinii es descrita para el centro de la provincia de Mendoza, Argentina. Se parece más a L. olongasta y L. laurenti en que los machos adultos tienen pigmento negro en el pliegue antehumeral y manchas escapulares que no son agrandadas. Difiere de estas especies en tener un cuerpo adulto menor, un número mayor de escamas en la mitad del cuerpo, una cola más corta y un mayor número de poros precloacales en machos, y un patrón ventral distinto en machos adultos. En el norte de su distribución se encuentra L. darwinii en el norte de la provincia de Mendoza y en la provincia de San Luis, y en el sur en el oeste de la provincia de La Pampa, en el noroeste de la provincia de Neuquén y en la provincia de Río Negro, pero se desconoce si estas poblaciones del norte y del sur de L. darwtnii están separadas por la distribución de la nueva especie. Análisis cladísticos basados en comportamiento, morfología y secuencias de DNA muestran filogenias conflictivas, pero concuerdan en que la nueva especie es un miembro del grupo boulengeri, con afinidades más cercanas a L. darwinii, L. olongasta y L. laurenti. A new species,of the Liolaemus darwinii complex is described from central Mendoza Province, Argentina. It most closely resembles L. olongasta and L. laurenti in that adult males have black pigment in the antehumeral fold and scapular spots that are not enlarged. It differs from these species in having a smaller adult body size, a higher number of midbody scales, a shorter tail, more precloacal pores in males, and a different adult male ventral body pattern. Its range is bordered by L. darwinii on the north in northern Mendoza and San Luis provinces, and on the south in western La Pampa and northwestern Neuquén and Río Negro provinces, but it is unknown whether these northern and southern populations of L. darwinii are separated by the range of the new species. Cladistic analyses based on behaviour

  7. Landsat 5 TM images and DEM in lithologic mapping of Payen Volcanic Field (Mendoza Province, Argentina)

    International Nuclear Information System (INIS)

    Fornaciai, A.; Bisson, M.; Mazzarini, F.; Del Carlo, P.; Pasquare, G.

    2009-01-01

    Satellite image such as Landsat 5 TM scene provides excellent representation of Earth and synoptic view of large geographic areas in different band combination. Landsat TM images allow automatic and semi-automatic classification of land cover, nevertheless the software frequently may some difficulties in distinguishing between similar radiometric surfaces. In this case, the use of Digital Elevation Model (DEM) can be an important tool to identify different surface covers. In this study, several False Color Composite (FCC) of Landsat 5 TM Image, DEM and the respective draped image of them, were used to delineate lithological boundaries and tectonic features of regional significance of the Paven Volcanic Field (PVF). PFV is a Quaternary fissural structure belonging to the black-arc extensional areas of the Andes in the Mendoza Province (Argentina) characterized by many composite basaltic lava flow fields. The necessity to identify different lava flows with the same composition, and then with same spectral features, allows to highlight the improvement of synergic use of TM images and shaded DEM in the visual interpretation. Information obtained from Satellite data and DEM have been compared with previous geological maps and transferred into a topographical base map. Based on these data a new lithological map at 1:100.000 scale has been presented [it

  8. Phenolic characterisation of red wines from different grape varieties cultivated in Mendoza province (Argentina).

    Science.gov (United States)

    Fanzone, Martín; Zamora, Fernando; Jofré, Viviana; Assof, Mariela; Gómez-Cordovés, Carmen; Peña-Neira, Álvaro

    2012-02-01

    Knowledge of the chemical composition of wine and its association with the grape variety/cultivar is of paramount importance in oenology and a necessary tool for marketing. Phenolic compounds are very important quality parameters of wines because of their impact on colour, taste and health properties. The aim of the present work was to study and describe the non-flavonoid and flavonoid composition of wines from the principal red grape varieties cultivated in Mendoza (Argentina). Sixty phenolic compounds, including phenolic acids/derivatives, stilbenes, anthocyanins, flavanols, flavonols and dihydroflavonols, were identified and quantified using high-performance liquid chromatography with diode array detection coupled with electrospray ionisation mass spectrometry (HPLC-DAD/ESI-MS). Marked quantitative differences could be seen in the phenolic profile among varieties, especially in stilbenes, acylated anthocyanins and other flavonoids. The polyphenolic content of Malbec wines was higher compared with the other red varieties. Dihydroflavonols represent a significant finding from the chemotaxonomic point of view, especially for Malbec variety. This is the first report on the individual phenolic composition of red wines from Mendoza (Argentina) and suggests that anthocyanins, flavanols and phenolic acids exert a great influence on cultivar-based differentiation. Copyright © 2011 Society of Chemical Industry.

  9. A short history of nuclear activities in Mendoza province

    International Nuclear Information System (INIS)

    Lardone, Leo E.

    2005-01-01

    Uranium was found in Mendoza in 1946 in 'Soberania' and 'Independencia' mines. After its creation in 1950 CNEA, together with Cuyo National University (UNC), developed the mining industry starting with the 'Papagayos' mine. It can be considered the beginning of the systematic exploitation of uranium in the country. In course of time the province of Mendoza passed to get one of the most uraniferous reserve of Argentina and it has accumulated the major production till now. However, in the last years there has been opposition to resume the production in the Sierra Pintada Uranium Manufacturing Complex. There was also a powerful land continuous progress in the field of no energetic applications of nuclear techniques in the province. The most outstanding example is the 'School of Nuclear Medicine Foundation', with installations in Mendoza city and in San Rafael. Besides, there is a research and development group in Cuyo National University devoted to the Nuclear Safety. Finally, we can not fail to mention the Auger Pierre Project, which is building in Malargue an observatory for the study of the cosmic rays. (author) [es

  10. 3-D crustal-scale gravity model of the San Rafael Block and Payenia volcanic province in Mendoza, Argentina

    Directory of Open Access Journals (Sweden)

    Daniel Richarte

    2018-01-01

    Based on gravimetric and magnetic data, together with isostatic and elastic thickness analyses, we modeled the crustal structure of the area. Information obtained has allowed us to understand the crust where the SRB and the Payenia volcanic province are located. Bouguer anomalies indicate that the SRB presents higher densities to the North of Cerro Nevado and Moho calculations suggest depths for this block between 40 and 50 km. Determinations of elastic thickness would indicate that the crust supporting the San Rafael Block presents values of approximately 10 km, being enough to support the block loading. However, in the Payenia region, elastic thickness values are close to zero due to the regional temperature increase.

  11. Observatorios de Desarrollo Territorial Sustentable Mendoza, Argentina.

    Directory of Open Access Journals (Sweden)

    María Elina Gudiño

    2015-03-01

    Full Text Available El observatorio de Desarrollo territorial Sustentable para Mendoza, Argentina surge en el marco de la ley 8051/09 de Ordenamiento Territorial y Usos del Suelo. Se trata de una herramienta de comunicación para la validación y el monitoreo de indicadores, políticas, planes, programas y proyectos de índole territorial. El marco teórico-metodológico se sustenta en los principios del ordenamiento territorial y el enfoque de sistemas complejos adaptativos. La estructura se diseña en una plataforma tecnológica que permite estandarizar datos, sistematizar información, construir indicadores territoriales y publicar cartografía. Una vez logrado el prototipo, se conforma “Red Territorio” como modelo de gestión que permite interactuar entre instituciones del sector público, privado, científico y ONG. Actualmente, se está trabajando en la vinculación con las instituciones que formarán parte de la experiencia piloto de Red territorio y en el ajuste de la plataforma informática que le dará sustento.

  12. Notes on the Analysis of Political Profiles and Careers. The study of Ruling Groups in a Hinterland Province of Argentina. (Mendoza, 1852-1900

    Directory of Open Access Journals (Sweden)

    Eliana Valeria Fucili

    2018-01-01

    Full Text Available This paper provides some theses to enrich studies on the conformation and characterization of nineteenth century Argentinean ruling groups. For this purpose, the article takes as its object of study the political teams of the Mendoza province that emerged during the second half of the 19th century, and presents solid empirical evidence to identify a set of 725 political actors responsible of embodying and activating the dynamics of the provincial state. This information has been analyzed with quantitative methods and qualitative tools such as prosopography, sociological interpretations and sociability analyses, allowing us to distinguish several features of the local leadership. A wide variety of documents—official records, departmental dispatches, press of the time— was used to investigate these questions, in order to explore the variables related to the unfolding of these actors’ political careers: their socio-professional profile, their continuity or permanence in public service positions, and the projection of their itineraries. As a whole, the article constitutes a contribution to current historiographical debates about the relative complexity of the nineteenth century political system and the role of provincial and local political groups in the process of shaping the Argentine national state. This study also represents a substantive advance in regard to literature about elites and ruling teams, which has been based on meager and unsystematic data, producing hasty generalizations that have nevertheless been taken as valid indicators to define a broad political spectrum.

  13. Podredumbre radical bacteriana del alcaucil en Mendoza (Argentina)

    OpenAIRE

    Soto, José Alfredo; Puglia, María Carolina

    2002-01-01

    En alcauciles (Cynara scolymus L.) de la variedad Bleek cultivados en Coquimbito (Mendoza, Argentina) se observó marcada detención del crecimiento y atraso en la formación de las inflorescencias. Las plantas sanas tenían aprox. 1 m de altura mientras las enfermas no llegaban a 30 cm. Las hojas más externas manifestaban clorosis y leve marchitez con posterior necrosis. Se realizaron aislamientos en APG de...

  14. Ciclos tectónicos, volcánicos y sedimentarios del Cenozoico del sur de Mendoza-Argentina (35°-37°S y 69°30'W Cenozoic tectonic, volcanic and sedimentary cycles in southern Mendoza Province, Argentina (35°-37°S y 69°30'W

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    Ana María Combina

    2011-01-01

    Full Text Available En este trabajo se describe la estratigrafía sedimentaria y volcánica asociada a los procesos de deformación de las unidades con edades del Cretácico Tardío al Plioceno Tardío aflorantes en el sur de Mendoza, Argentina, entre los ríos Atuel y Barrancas en el ámbito de la Cordillera Principal. Se proponen tres ciclos tectovolcano-sedimentarios, limitados por discordancias regionales generadas por la acción de las Fases Incaica, Quechua, Pehuenche y Diaguita. El primer ciclo comprende las unidades volcánicas y sedimentarias del Cretácico Superior hasta el Oligoceno Superior (Formaciones Roca y Pircala-Coihueco y el Ciclo Eruptivo Molle. El segundo abarca desde el Oligoceno Tardío al Mioceno Tardío (Formación Agua de la Piedra y las Andesitas Huincán. Por último, el tercer ciclo comprende desde el Mioceno Tardío al Plioceno (Formaciones Butaló, Pincheiras, Loma Fiera, Río Diamante y las Andesitas La Brea.This article describes the volcanic and sedimentary stratigraphy and their associated proces-ses with the Andean deformation during the Late Cretaceous to Late Pliocene. The studied área is located between the Atuel and Barrancas rivers and the Main Cordillera, in southern Mendoza, Argentina. Three tectovolcano-sedimentary cycles limited by regional discordances (Inca, Quechua, Pehuenche and Diaguita are proposed. The first comprises Upper Oligocene to Upper Miocene volcanic and sedimentary units (Roca and Pircala-Coihueco formations and the Volcanic Cycle Molle. The second extends from the Late Oligocene to Late Miocene (Agua de la Piedra Formation and the Huincán Andesites volcanic cycle. Finally, the third cycle ranges from the Late Miocene to Pliocene (Butaló, Pincheiras, Loma Fiera and Rio Diamante formations and La Brea Andesites.

  15. Lytological characterization and hydrothermal alteration Infiernillo porphyry, provincia Mendoza, Argentina

    International Nuclear Information System (INIS)

    Gomez, A.; Rubinstein, N.; Kleiman, L.. E.mail: kleiman@cae.cnea.gov.ar

    2007-01-01

    El Infiernillo porphyry copper and Mo deposit, in southern Mendoza, Argentina is hosted by ignimbrites of the Cochico Group (lower Permian). The alteration zone consists of a small central quartz neck with appreciable hematite surrounded by an intense quartz-injected zone with local pervasive potassic alteration. Outwards, there is a well-developed phyllic halo with intense bleaching which consists of pervasive and vein-type silicification, sericitization and pyritization. In the outer part of the alteration zone, small polymetallic veins with pyrite, arsenopyrite, galena and minor, chalcopyrite, sphalerite and electrum in quartz gangue crop out. New field, petro-mineralogic and geochemical data confirmed that the host rocks are equivalent to the dacitic and rhyodacitic ignimbrites of the Toba Vieja Gorda Member (Yacimiento Los Reyunos Formation, Cochico Group)

  16. Paleozoogeography of the Wine Mouse (Akodon oenos & Late Holocene Paleoenvironments in South-Central Mendoza, Argentina

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    Fernando Julián Fernández

    2011-02-01

    Full Text Available Cranial remains of the wine mouse (Akodon oenos are documented from an archaeological site in south-central Mendoza, Argentina (Agua de La Mula, 35º22' S, 68º15' W, which dates to the end of the late Holocene (1610 ± 60; 1260 ± 60; 1000 ± 50 C14 yr B.P.. The taxonomic status of this small rodent is currently being assessed, but these remains represent the first fossil record for the morphotaxon A. oenos. The species’ present distribution is restricted to a few records from Mendoza province. Analysis of the remains supports paleoenvironmental reconstruction using the small mammal assemblage recovered from this site. From the late Holocene into modernity temperature decreased and winter precipitation increased, resulting in advance of Patagonian steppe grading with altitude into Monte desert. Holocene climatic conditions may explain the relatively late human occupation of ecologically marginal environments in this region, which probably favored effective human occupation of the Payunia region at sites such as Agua de La Mula between 1600 and 1000 years B.P.

  17. ESTUDIO ARQUEOHISTÓRICO DEL REGISTRO VÍTREO EN SITIOS MINEROS (MENDOZA, ARGENTINA (Archaeohistorical Study of the Vitreous Record in Mining Sites (Mendoza, Argentina

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    Osvaldo Sironi

    2017-06-01

    Full Text Available Se presentan los resultados de los análisis de los registros vítreos de los sitios Minas Paramillos Sur y Mina La Atala, localizados en la Reserva Natural Villavicencio y Divisadero Largo. A partir del conocimiento de la materialidad cultural vítrea de esta región, se evidencian patrones de consumo vinculados a diversos tipos de bebidas y productos medicinales entre la clase trabajadora minera de la Precordillera de Mendoza (Argentina. ENGLISH: Results of the analysis of the vitreous record from Minas Paramillos Sur and Mina La Atala are presented. These sites are located in the Villavicencio and Divisadero Largo natural reserves. Knowledge of the vitreous cultural material of this region allows us to show consumption patterns of various types of beverages and medicines among the mining working class of the Mendoza Precordillera, Argentina.

  18. Evaluation and design of the uranium project “Tigre I – La Terraza”, Sierra Pintada, Mendoza, Argentina

    International Nuclear Information System (INIS)

    Mansilla, M.; Dieguez, S.

    2014-01-01

    The Sierra Pintada uranium district in Mendoza Province, Argentina, was discovered by airborne survey. This deposit is associated with a volcanic caldera and occurs in the Lower Permian volcaniclastic sediments of the Cochico Group, in which aeolian and fluvial sandstones, inter-bedded with ignimbrites, were reworked by pyroclastic flows. The origin of the mineralization is interpreted as a product of the leaching of the inter-bedded rhyolitic tuff. The mineralization is lenticular and nearly concordant with the bedding. The deposit has been affected by a complex fault system, which is responsible for mineralization and disposition via spatial displacement. The primary uranium minerals are uraninite, brannerite and coffinite. Uranophane and low liebigite uranium are the products of the oxidative alteration of primary minerals. This study involves the technical and economical evaluation of the open pit uranium mining project Tigre I – La Terraza in Mendoza, Argentina, at prefeasibility level. Its development includes geological modeling through economic evaluation, and the incorporation of different mining-specific software.

  19. Patrones fenológicos de la Provincia de Mendoza, Argentina, mediante serie temporal de imágenes NOAA-AVHRR NDVI GAC Phenological patterns of the province of Mendoza, Argentina, through a temporal series of NOAA-AVHRR NDVI GAC images

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    M. M González Loyarte

    2010-12-01

    Full Text Available Se describe la dinámica temporal de la vegetación de Mendoza mediante análisis de la fenología foliar regional con una serie de 108 imágenes mensuales de índice de vegetación NOAA-AVHRR NDVI GAC. La serie se descompone aplicando la Transformada Rápida de Fourier en parámetros dinámicos: NDVI medio, amplitudes (máxima variabilidad del NDVI y fases (tiempo entre inicio del ciclo y máximo NDVI para diferentes períodos. Con los parámetros con mayor información (variablilidad inter e intraanual se hace una clasificación y se obtiene un mapa de 18 áreas de comportamiento fenológico. Éste se vincula con los ecosistemas y con las unidades de vegetación. Se modela el patrón fenológico (curva NDVI mensual para 17 unidades de vegetación. El mapa aporta elementos dinámicos al estudio regional de la vegetación generando una zonificación nueva explicada por variables que determinan la actividad vegetativa. El patrón fenológico describe el funcionamiento de la vegetación y permite comprender sus variaciones geográficas. El conjunto de la vegetación de Mendoza responde a un ciclo anual con matices localizados de ligera bimodalidad. Los patrones de bajo contraste invierno-verano corresponden a condiciones climáticas xéricas expresando su máximo vegetativo al final del verano; la disponibilidad hídrica incrementa este contraste acortando el tiempo de máxima expresión vegetativa.The temporal dynamics of vegetation in Mendoza is described through analysis of regional foliar phenology using a series of 108 monthly NOAA-AVHRR NDVI GAC images. A Fast Fourier Transform was used to decompose the series into dynamic parameters: mean NDVI, amplitudes (maximum NDVI variability and phases (time from start of cycle to maximum NDVI for different time periods. A classification is made based on those parameters with larger information content (inter- and intra-annual variability, achieving a map of 18 areas of phenological behaviour. This

  20. Viticulture and landscape, values for the society in Mendoza, Argentina

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    Abraham Laura

    2014-01-01

    Full Text Available The landscape is a perception of the agroecosystem valued as aesthetic, cultural, recreational and touristic, for conservation, among others. It is considered an environmental service and cultural heritage according to the International UN Conference 1972 (Paris, France. The agroecosystem of Mendoza's Northern Oasis creates a landscape with the presence of vineyards framed by the Andes, which is a scenic resource characterized as an environmental cultural service. The disordered process of urban growth in North of Mendoza, threatens the provision of the mentioned service. In this paper, a qualitative and a quantitative assessment aim to characterize the perceptions of urban residents on the vineyards landscape. Two methodologies were applied: expert opinion through focus groups and survey data collection. By working with focus groups, positive impacts of this kind of landscape were recognized. In the 638 surveys made in the urban area of Mendoza, a six landscape images valuation was requested (with a score of 1 to 10, where 10 is the maximum. The highest average scores were for the view of Aconcagua, secondly the agricultural landscape with vineyards and mountains and thirdly another view of vineyards in the North Oasis.

  1. Espectro trófico de Chelonoidis chilensis (Chelonii: Testudinidae en la provincia fitogeográfica del monte (Mendoza, Argentina

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    Richard, Enrique

    1994-01-01

    Full Text Available Between 1983 and 1991, 83 field trips were made to the biogeographical province of Monte, in Mendoza province, Argentina, in order to study the trophic spectrum of Chelonoidis chilensis, among other ecoethological aspects. The trophic period extends from September to April. Adults are herbivorous in strict sense, but this may change according to the available resourees. Trophic spectrum is composed by 14 items (Families of vegetables. Some items have toxic or potentially toxit substances. Finally, the diet of Ch. chilensis is compared with the one of Ch. donosobarrosi and with other desert tortoises.

  2. Evolución de la natación de competencia en la provincia de Mendoza, Argentina, desde 1950 hasta el año 2000 = Evolution of the swimming competition in the province of Mendoza (Argentina, from 1950 to the year 2000

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    Adrián Javier Sáez

    2013-03-01

    Full Text Available La investigación llevada a cabo se sustenta en un estudio exploratorio y descriptivo. El tipo de diseño de la investigación es no experimental retrospectiva porque no se manipulan las variables y se buscan datos del pasado. Fue evaluada una población de N=40 conformada por 28 nadadores, 8 entrenadores y 4 dirigentes de distintas épocas, con una encuesta para recolectar datos de los orígenes y evolución de la natación de competencia en Mendoza. Asimismo se evaluó la evolución de los records de las pruebas de 100 metros en los cuatro estilos, los 400, 800 y 1500 metros libres ambos sexos en pileta de 25 y 50 metros. Se consideró la cantidad de clubes participantes, los nadadores con licencia nacional en los distintos años y las nominaciones para Seleccionados Nacionales en las distintas décadas. No se obtuvo diferencias estadísticamente significativas entre la evolución de los records realizados en pileta de 25 con la de 50 metros. Se comprobó que disminuyó tanto la cantidad de clubes participantes en los torneos desde 1950 hasta el año 2000 como la de nadadores federados. El estudio nos revela que el nivel competitivo de los nadadores se ha elevado por el aumento en las nominaciones a Seleccionados Nacionales. Como conclusión obtuvimos que posiblemente estos valores obtenidos se deban a la evolución en las técnicas de nado y en los métodos de entrenamiento, interrogante que puede servir para próximos estudios y que, en este caso, la cantidad de deportistas no es directamente proporcional a los logros deportivos.------------------------------------------------------------------------------The investigation that we carried out sustains in an exploratory and descriptive study. The type of design of the investigation is non experimental retrospective because the variables are not manipulated and data of the past look for. A population of N=40 conformed by 28 swimmers, 8 trainers and 4 leaders of different times was evaluated

  3. Subsurface architecture of Las Bombas volcano circular structure (Southern Mendoza, Argentina) from geophysical studies

    Science.gov (United States)

    Prezzi, Claudia; Risso, Corina; Orgeira, María Julia; Nullo, Francisco; Sigismondi, Mario E.; Margonari, Liliana

    2017-08-01

    The Plio-Pleistocene Llancanelo volcanic field is located in the south-eastern region of the province of Mendoza, Argentina. This wide back-arc lava plateau, with hundreds of monogenetic pyroclastic cones, covers a large area behind the active Andean volcanic arc. Here we focus on the northern Llancanelo volcanic field, particularly in Las Bombas volcano. Las Bombas volcano is an eroded, but still recognizable, scoria cone located in a circular depression surrounded by a basaltic lava flow, suggesting that Las Bombas volcano was there when the lava flow field formed and, therefore, the lava flow engulfed it completely. While this explanation seems reasonable, the common presence of similar landforms in this part of the field justifies the need to establish correctly the stratigraphic relationship between lava flow fields and these circular depressions. The main purpose of this research is to investigate Las Bombas volcano 3D subsurface architecture by means of geophysical methods. We carried out a paleomagnetic study and detailed topographic, magnetic and gravimetric land surveys. Magnetic anomalies of normal and reverse polarity and paleomagnetic results point to the occurrence of two different volcanic episodes. A circular low Bouguer anomaly was detected beneath Las Bombas scoria cone indicating the existence of a mass deficit. A 3D forward gravity model was constructed, which suggests that the mass deficit would be related to the presence of fracture zones below Las Bombas volcano cone, due to sudden degassing of younger magma beneath it, or to a single phreatomagmatic explosion. Our results provide new and detailed information about Las Bombas volcano subsurface architecture.

  4. ORDEN HÍDRICO: PRÁCTICAS E INSTITUCIONES EN MENDOZA, ARGENTINA

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    Paula Cecilia Mussetta

    2014-06-01

    Full Text Available Este artículo aborda el campo del manejo de los recursos hídricos y propone un esquema de análisis para estudiar las relaciones entre las instituciones y las prácticas de los actores afectados por las acciones de tales instituciones. Avanza después, en forma preliminar y descriptiva, sobre la exploración de algunas de las categorías presentadas en el esquema propuesto en un caso concreto (Mendoza, Argentina. Reconocemos una doble dinámica de funcionamiento del régimen hídrico: una entre la autoridad hídrica y los grandes y poderosos actores vitícolas y otra entre un conjunto de entidades satélites no hídricas y pequeños productores. Esto lleva a que desde la política hídrica se reproduzca un modelo de producción que claramente beneficia a un sector a costa de otro.   HYDROLOGIC ORDER: PRACTICES AND INSTITUTIONS IN MENDOZA, ARGENTINA This article addresses the territory of water resource management and proposes an analytical framework to study the inter-institutional relationships and practices of the stakeholders affected by the actions taken by those institutions. It explores in a preliminary and descriptive form some of the categories presented in the framework proposed for the specific case of Mendoza, Argentina. It identifies a double working dynamic in the hydrologic regime: one between the hydrologic authorities and large-scale and powerful stakeholders of the wine industry and another dynamic between a series of non-hydrologic satellite entities and small-scale producers. This leads to a hydrologic policy that reproduces a production model that clearly benefits one sector at the expense of another.

  5. Sr, Nd, Pb and Hf isotopic constraints on mantle sources and crustal contaminants in the Payenia volcanic province, Argentina

    DEFF Research Database (Denmark)

    Søager, Nina; Holm, Paul Martin; Thirlwall, Matthew F.

    2015-01-01

    The presented Sr, Nd, Hf and double-spike Pb-isotopic analyses of Quaternary basalts from the Payenia volcanic province in southern Mendoza, Argentina, confirm the presence of two distinct mantle types feeding the Payenia volcanism. The southern Payenia mantle source feeding the intraplate-type Río...

  6. Permo-triassic volcanism in the San Rafael Block (Mendoza province) and its uraniferous potential

    International Nuclear Information System (INIS)

    Kleiman, L.E.

    1993-01-01

    This paper describes the Permo-triassic volcanism in the San Rafael Block, Mendoza, Argentina, which forms part of the Choiyoi province and it represents by large volumes of intermediate to silicic ignimbrites with minor sub volcanic bodies of rhyolites, andesites and basandesites. Three different suites can be distinguished: the first one (Lower Section) of Early Permian age, is composed of dacites and rhyolites (SiO 2 up to 71 %) with minor andesites, the second one (Upper Section) of Late Permian-Early Triassic age is made up of rhyolites (SiO 2 up to 77 %) with some basandesites and andesites, and the third one, of Triassic age is composed of rhyolites (SiO 2 > 75 %) and basandecites. These suites are easily distinguished by means of trace element data and are believed to represent the transition between a subduction-related magmatic arc and an extensional tectonic regime. This tectonic setting is similar to the prevalent during the Cenozoic in the Sierra Occidental of Mexico and is favourable for the development of long-lived hydrothermal systems which lead to economic U concentrations (i.e. Sierra de Pena Blanca). In the San Rafael Block, the Dr. Baulies-Los Reyunos U deposit, which is hosted in volcanic sediments, is associated to the first suite (Lower Section). Although minor U concentrations are known, up to date, to be related to the second and third suites, these rocks are fertile and seen to be potential source for the formation of uranium deposits within a volcanic caldera environment. (Author)

  7. Software INCAS (Convective Clouds Indicator to Seeding Activities) to convective clouds class forecast in Mendoza (Argentina).

    Science.gov (United States)

    Pérez, R. C.

    2009-09-01

    With the objective of to get to forecast and operative determinations tool to seeding of hailstorm in the damage mitigations job that produces its precipitation in Mendoza (Argentina), we developed to software based in on surface and 500 mb. level atmospherics variable. We had used on surface dates because in this level exist to big amount of information, practically it is possible to get its measures continuously; in addition it is the level that data of damages are registered that the hail precipitation produces. The decision to use the level of 500 mb, it must to that it is the height in which the upset one of the air circulation takes place from the Pacific to Mendoza, who produces important changes and instability in the atmosphere of Mendoza, these data were obtained from the radiosonde of Santo Domingo in Santiago (Chile) and El Plumerillo (Mendoza). In the program is integrated the different indices and models obtained in ours works from investigation on the subject of last the five years. Since the October of 2004 to April of 2009 the values have been taken from the variables mentioned every day, hourly during the fight campaigns antihail (October-April). The results have integrated in the program INCAS, whom it is due to enter the surface variables: Temperature in °C, the dew point in °C, the atmospheric pressure in mb., the index of ultraviolet solar radiation, the direction and wind speed; whereas the variables of the level of 500 are due to introduce mb: height of the level of 500 mb in meters, temperature of the level in °C, the direction and wind speed to that height. From the process of these variables the type of convective process is obtained like exit of the program , that is more probable that it appears in Mendoza for these atmospheric conditions; the thresholds that trigger to the stormy processes and their possible severity. This year software was validated in his first version, obtaining itself very good results.

  8. Analysis of the potential production and the development of bioenergy in the province of Mendoza - Bio-fuels and biomass - Using geographic information systems

    International Nuclear Information System (INIS)

    Flores Marco, Noelia; Hilbert, Jorge Antonio; Silva Colomer, Jorge; Anschau, Renee Alicia; Carballo, Stella

    2010-01-01

    In this work, the partial results of the potential production of energy, starting from the biomass and the development of the crops, directed to the production of bio-fuels (Colza and Topinamur) in the North irrigation oasis of Mendoza, Argentina within the National Program of Bio-energy developed by INTA is presented. For the evaluation of the bio-energetic potential, derived from the biomass, the WISDOM methodology developed by FAO and implemented by INTA in Argentina was applied with the collaboration of national and provincial governmental entities that contribute local information The study of the potential production and the development of the bio-energetic crops have been carried out with the advising and participation of the experts of INTA of the studied crops. The province of Mendoza has semi-deserted agro-climatic characteristics. The type of soil and type of weather allows the production of great quality fruits and vegetables in the irrigated areas. The four great currents of water conform three oasis; Northeast, Center and South, which occupy the 3.67% of the surface of Mendoza. Today, Mendoza has 267,889 irrigated hectares, but the surface that was farmed by irrigation was near to the 400,000 ha. The climate contingencies, froze and hailstorm precipitations, plus the price instability cause great losses in the productive sector, taking it to the forlornness of the exploitations. The crop setting of these forlornness lands with crops directed to the production of bio-fuels and the utilization of the biomass coming from the agriculture activities and the agro industry (pruning of fruit trees, refuses of olive and vine, remnants of the peach industry, etc.) could assist the access to the energy in the rural areas, stimulating the economical improvement and the development in these communities. (author)

  9. Analysis of the potential production and the development of bioenergy in the province of Mendoza - Bio-fuels and biomass - Using geographic information systems

    Energy Technology Data Exchange (ETDEWEB)

    Flores Marco, Noelia; Hilbert, Jorge Antonio [Instituto de Ingenieria Rural, INTA Las Cabanas y Los Reseros s/n, CP: 1712 Castelar, Buenos Aires (Argentina); Silva Colomer, Jorge [INTA EEA Junin Mendoza, Carril Isidoro Busquets s/n CP: 5572 (Argentina); Anschau, Renee Alicia; Carballo, Stella [Instituto de Clima y Agua, INTA. Las Cabanas y Los Reseros s/n, CP:1712 Castelar, Buenos Aires (Argentina)

    2010-06-15

    In this work, the partial results of the potential production of energy, starting from the biomass and the development of the crops, directed to the production of bio-fuels (Colza and Topinamur) in the North irrigation oasis of Mendoza, Argentina within the National Program of Bio-energy developed by INTA is presented. For the evaluation of the bio-energetic potential, derived from the biomass, the WISDOM methodology developed by FAO and implemented by INTA in Argentina was applied with the collaboration of national and provincial governmental entities that contribute local information The study of the potential production and the development of the bio-energetic crops have been carried out with the advising and participation of the experts of INTA of the studied crops. The province of Mendoza has semi-deserted agro-climatic characteristics. The type of soil and type of weather allows the production of great quality fruits and vegetables in the irrigated areas. The four great currents of water conform three oasis; Northeast, Center and South, which occupy the 3.67% of the surface of Mendoza. Today, Mendoza has 267,889 irrigated hectares, but the surface that was farmed by irrigation was near to the 400,000 ha. The climate contingencies, froze and hailstorm precipitations, plus the price instability cause great losses in the productive sector, taking it to the forlornness of the exploitations. The crop setting of these forlornness lands with crops directed to the production of bio-fuels and the utilization of the biomass coming from the agriculture activities and the agro industry (pruning of fruit trees, refuses of olive and vine, remnants of the peach industry, etc.) could assist the access to the energy in the rural areas, stimulating the economical improvement and the development in these communities. (author)

  10. Nueva ruralidad en territorios periféricos: los productores caprinos del noreste de Mendoza (Argentina

    Directory of Open Access Journals (Sweden)

    Laura María Torres

    2008-07-01

    Full Text Available Lately, several authors have been analyzing the changes in rural areas triggered by globalization. The concepts of new rurality and pluriactivity have allowed progress along these lines, highlighting the new difficulties facing the most vulnerable sectors. This study explores the transformation of peripheral rural territories in Mendoza (Argentina, particularly those that have been thought of as isolated and traditional. This research develops from a case study, combines quantitative and qualitative methods, and takes the production undertakings happening in those lands as units of analysis. Production and economic situations of the past are compared to those in the present. The tendency toward pluriactivity is here considered as a response to the new conditions, and also as an expression of the process of articulation with the capitalist system.

  11. Santiago de Chile y Mendoza, Argentina: La red social que apoyó a exiliados chilenos (1973-1976

    Directory of Open Access Journals (Sweden)

    Paredes, Alejandro

    2007-12-01

    Full Text Available The present article describes the social networks that helped those exiled Chileans that arrived at the city Argentina of Mendoza after the overthrow of the socialist Chilean President Salvador Allende in 1973. Between 1973 and 1989, the Chilean community exiled in Mendoza was large. This writing stops in period 1973-1976, because in 1976 a military coup in Argentina deeply changed the social situation of the country, which would justify another article. The used sources are, mainly, letters that belong to the file of the Ecumenical Committee of Social Action, institution that supported the Chileans who received status of Political Refugees by High the Commissioners of the Nations United for Refugees (UNHCR.

  12. Alkaline lavas from southern Mendoza, Argentina, extend the Patagonian DUPAL mantle field to the north

    Science.gov (United States)

    Soager, N.; Holm, P. M.; Llambias, E.

    2010-12-01

    The lavas sampled around Río Colorado ~37°S at the border of Mendoza and Neuquén provinces, Argentina, define an OIB-like end-member composition for the Pleistocene and Holocene activity in the Payún Matrú volcanic field. Although positioned in the far back-arc of the Andes, only a few lavas show signs of involvement of slab fluids or crustal contamination such as relatively high LILEs relative to Nb. The very low La/Nb (~0.66) and Zr/Nb (~5) and high U/Pb (0.3-0.4) of the end-member composition clearly distinguish the source from normal MORB mantle, while high Ba/Nb (~10) and K/Nb (370-400) compared to FOZO and HIMU type OIBs suggest an EM type of mantle. Overall, the trace element patterns of the Río Colorado lavas are similar to the central and north Patagonian intraplate basalts and to South Atlantic E-MORB affected by the Discovery plume and the LOMU component (le Roux et al., 2002, EPSL 203). The isotopic composition of the Río Colorado component has a 206Pb/204Pb = 18.4, 207Pb/204Pb = 15.58, 208Pb/204Pb = 38.3, 87Sr/86Sr = 0.70353 and 143Nd/144Nd = 0.51285. This composition overlaps the central and north Patagonian intraplate basalts in Pb-isotopic space but is slightly less enriched in Sr and Nd-isotopes. It is distinctly different from the FOZO like composition of the south Patagonian intraplate basalts and the nearby Juan Fernandéz plume but similar to the South Atlantic N-MORB and MORB from the southern Chile Ridge segment 4 (Sturm et al., 1999, JGR 104) described as DUPAL type. The DUPAL-MORB type isotopic composition and the plume-like trace element patterns of the Río Colorado lavas suggest the presence of a weak plume beneath the area. The eruption of the large Payún Matrú volcano and the gigantic Pleistocene flood basalts also calls for a thermal anomaly to produce these melts during a weakly compressive tectonic regime with no significant addition of slab fluids. This was supported by Burd et al. (2008, Abstr., 7th Int. Sym. And. Geo

  13. The use of massive SIT for the control of the Medfly, Ceratitis capitata (Wied.), strain SEIB 6-96, in Mendoza, Argentina

    International Nuclear Information System (INIS)

    Longo, Oscar de; Colombo, Anibal; Gomez-Riera, Pablo; Bartolucci, Andrea

    2000-01-01

    The increasing demand for fresh fruits has led to the development of new techniques in farming and in harvest and postharvest areas. Special care has been taken to ensure that the use of pesticides reconciles pest control with a low impact on the environment and human health. The presence of pests of economic importance, among them, the Medfly (Ceratitis capitata Weid.), led to the search for alternative techniques of control. The Medfly was first recorded in the United States in 1901, and in Argentina in 1934. The use of the sterile insect technique (SIT) began to develop around 1950. Improvement in the technique has produced promising results world-wide, especially in the breeding of sexing strains, which allows the release of sterile males only. The National Service of Agrifood Quality and Protection (SENASA) of Argentina, coordinates the National Program of Control and Eradication of Fruit Flies (PROCEM). PROCEM has divided Argentina into five different regions. This is according to quarantine regulations, and control and eradication activities to be undertaken. Actually, the Mendoza and San Juan provinces, and the Patagonia Region, have adhered to PROCEM. They have ongoing regional programmes in their respective areas. Mendoza and the Central Valleys of San Juan (Tulum, Ullum and Zonda) are included in the New Cuyo Region, Phase I, where the main objectives are: eradication of the Medfly; verification of the quarantine status; creation of a Medfly free area and exports to Medfly free markets. SIT is the main technique used in Mendoza for Medfly eradication. The Institute of Quality and Protection of Mendoza (ISCAMen) is in charge of the programme in the Province of Mendoza. Mendoza policies for Medfly eradication and the use of SIT, are based on: a growing area of 290,000 ha of vegetable and fruits (vineyards, stone, pome and nut orchards) of high quality, with favourable agroecological conditions and geographical isolation, exports of fresh fruits for the

  14. Desarrollo poblacional de Diaspidiotus perniciosus (Hemiptera: Diaspididae en cultivos de manzano de San Carlos, Mendoza, Argentina

    Directory of Open Access Journals (Sweden)

    Guillermo P. LOPEZ GARCIA

    2011-01-01

    Full Text Available Se estudió la bionomía de Diaspidiotus perniciosus Comstock (“escama de San José”, en manzanos de la variedad “Red delicious” de San Carlos, Mendoza, Argentina, durante los ciclos productivos 2007-2008 y 2008-2009. Se determinó el número de generaciones anuales y se estudiaron las fluctuaciones poblacionales asociadas a la integral térmica para la especie en esta región. D. perniciosus presenta dos generaciones superpuestas al ciclo del cultivo, mientras que las ninfas (N1 y N2 de la tercera generación se desarrollan solamente hasta el final de la temporada estival y pasan al estado de quiescencia, en el que permanecen durante el invierno. El desarrollo de D. perniciosus en esta zona coincide con el de esta especie en la zona frutícola del centro de Chile en cuanto al número de generaciones y al periodo de quiescencia invernal. La población quiescente en Chile está integrada predominantemente por ninfas del primer estadio (N1, mientras que en San Carlos, Mendoza, la población quiescente está integrada principalmente por ninfas del segundo estadio (N2. La similitudes entre ambas poblaciones se deben, probablemente, a las coincidencias en latitud, clima y especie hospedera. El impacto económico de D. perniciosus en la zona de estudio tiene mayor relevancia durante los meses de diciembre y enero, cuando se observa una alta incidencia de daños en los frutos y las hojas; este es el momento decisivo para implementar medidas de control fitosanitario. Estas deberán aplicarse en función de los máximos poblacionales de N1 que se producen con 600-650 Grados-Día (oD en diciembre y con 1.170-1.270oD en enero. En las temporadas en las que la densidad poblacional de la plaga es especialmente alta, podrían incorporarse medidas adicionales de control con 1.800-2.000oD durante el mes de abril. Los resultados de estos estudios representan una herramienta predictiva, que permitirá elaborar estrategias para el control de poblaciones de

  15. Comercio y producción en el proceso de desarrollo capitalista en la provincia de Mendoza, Argentina, 1850-1915, De fábrica de carne y grasa a fábrica de vinos

    Directory of Open Access Journals (Sweden)

    Rodolfo Richard-Jorba

    2010-06-01

    Full Text Available El trabajo estudia los dos modelos económicos y sociales que tuvieron vigencia en Mendoza entre 1870 y 1915. El primero, de ganadería comercial con agricultura subordinada, estaba centrado en el negocio de compra de ganado en el este del país, su engorde en los oasis mendocinos y su exportación a Chile. La modernización capitalista impuso el modelo agroindustrial vitivinícola orientado al mercado interno formando una de las primeras economías regionales de Argentina. El análisis de los modelos muestra las características centrales de cada uno y el proceso de grandes transformaciones económicas, sociales, políticas y territoriales que experimentó la provincia.This paper studies the two economical and social models that were in vogue in Mendoza between 1870 and 1915 which was oudined by the author's research. The commercial livestock with subordinate agriculture was centered on the buying of cattle in the eastern part of the country, its fattening in the oasis of Mendoza and its export to Chile. The capitalist modernization imposed the viticulture agro industrial model directed to the internal market. This model developed one of the regional economy of Argentine. The analysis of these two models shows the principal characteristics of each and the process of great economical, social, politics and territorial transformations of the province.

  16. Pollution trends using bark of morus alba in the cities of buenos aires and mendoza (Argentina Tendências de poluição usando cascas de morus alba nas cidades de buenos aires e mendoza (Argentina

    Directory of Open Access Journals (Sweden)

    Patricia Perelman

    2010-06-01

    Full Text Available A comparative study of elements deposited on tree bark was carried out for urban and periurban areas of two of the most important cities in Argentina. The content of Fe, Mg, Al, Mn, Zn, Pb, Ba, Cr, Hg, Cu, Ni, Cd and Sb was determined by inductively coupled plasma atomic emission spectrometry (ICP-OES in Morus alba tree bark collected in the cities of Buenos Aires and Mendoza. The main air pollutants detected in the Buenos Aires urban area were Ba, Cr, Cu and Ni and indicate significative difference from the Mendoza urban and periurban areas. Significantly, higher concentrations of Zn, Ba, Cr and Cu were recorded in the periurban area of the city of Buenos Aires than in Mendoza. Bark samples were strongly influenced by dust and show Al, Fe, Mg and other element accumulations that indicate that soil particles were carried out by wind. Elements like Ba and Zn, commonly linked to traffic emissions, showed the highest concentrations in the Buenos Aires metropolitan area, possibly due to more intensive vehicular traffic. Our results indicated that intensity of vehicular traffic and not city structure is responsible for air pollution.Um estudo comparativo dos elementos depositados nas cascas das árvores foi realizado nas áreas urbanas e na periferia de duas cidades das mais importantes da Argentina. Os índices do Fe, Mg, Al, Mn, Zn, Pb, Ba, Cr, Cu, Ni e do Sb foram determinados pela espectrometria da emissão atômica com plasma acoplado indutivamente (ICP-OES nas cascas da árvore Morus alba, coletados nas cidades de Buenos Aires e Mendoza. Os principais elementos da contaminação do ar detectadas na área urbana de Buenos Aires foram Ba, Cr, Cu e Ni, que indicaram diferenças significativas nas áreas urbanas e na periferia de Mendoza. Uma concentração do Zn, Ba, Cr e do Cu foi achada na periferia da cidade de Buenos Aires, significativamente mais elevada do que em Mendoza. As amostras da casca foram influenciadas fortemente pela poeira e

  17. Biodiversidad de la flora del flanco oriental del Cordón del Plata (Luján de Cuyo, Mendoza, Argentina. Catálogo florístico Biodiversity of the flora of the eastern slope of the Cordón del Plata (Luján de Cuyo, Mendoza, Argentina

    Directory of Open Access Journals (Sweden)

    Eduardo Méndez

    2009-07-01

    Full Text Available La biodiversidad de la flora de la vertiente oriental del Cordón del Plata, Luján de Cuyo, Mendoza, Argentina se analizó a lo largo de un gradiente altitudinal, entre los 1200 y 4500 m s.n.m. Para ello se utilizó la lista florística de las especies de 89 comunidades vegetales distribuidas en 14 unidades de vegetación, 5 pisos de vegetación y 3 unidades fitogeográficas. Para cada especie se consideró su distribución en los grupos de comunidades vegetales, ubicación fitogeográfica, formas de vida, origen y registro de colección. La flora examinada contiene 667 especies vegetales que se corresponden con 338 géneros y 82 familias. Las familias están representadas por 8 Pteridophyta, 1 Gymnospermae y 73 Angiospermae, con 12 Monocotyledoneae y 61 Dicotyledoneae. Las familias mejor representadas son Asteraceae y Poaceae que tienen en conjunto 110 géneros y 249 especies. Los géneros Senecio, Baccharis y Adesmia son los más ricos en especies. Aproximadamente el 20 % de las especies son endémicas de Argentina. La flora del área se la compara con la del país, la provincia y la de otras áreas.Floristic catalogue. The floristic biodiversity of the eastern slope of the Cordón del Plata, Luján de Cuyo, Mendoza, Argentina, was studied along an altitudinal gradient, between 1200 and 4500 m a.s.l. For this we used a floristic list of 89 plant communities, distributed in 14 vegetation types, 5 vegetation belts and 3 phytogeographic units. For each of the species, its distribution in the groups of plant communities, phytogeographic position, life form, biogeographical origin, and registration of each collection was considered. The studied flora has 667 species, corresponding to 338 genera and 82 families. There are 8 Pteridophyta, 1 Gymnospermae, and 73 Angiospermae, of which 12 are Monocotyledons and 61 Dicotyledons. The most represented families are Asteraceae and Poaceae, which in total have 110 genera and 249 species. The most species

  18. Eco-technocratic Device: the Case of the Agro-industrial Water Management in MendozaArgentina

    Directory of Open Access Journals (Sweden)

    Jorge Daniel Ivars

    2017-01-01

    Full Text Available This paper aims to unravel the formation of an eco-technocratic device behind the "techno-ecological practices" of some integrated agro-food producers. These practices are based on technologies that operate articulating power relations of these actors in connection to world agro-foods markets. The article has an interpretive emphasis and is based on analysis of information generated from in-depth interviews to businessmen of the wine, canning, oil and livestock industries with international commercial links and located in the oasis of the Mendoza river in Argentina. Throughout the paper we analyze certain "techno-ecological practices" and how they are embedded into a specific device that locates and differentiates these entrepreneurs not only in international markets, but also before State and society.

  19. Facies and carbon/oxygen isotopes of the Calabozo Formation (Middle Jurassic), Arroyo La Vaina, Mendoza, Argentina

    International Nuclear Information System (INIS)

    Cabaleri, N.G.; Valencio, S.A.; Cagnoni, M.C.; Ramos, A.M.; Armella, C.; Panarello, H.O; Riccardi, A.C

    2001-01-01

    Facial / microfacial studies and geochemical isotopic analyses on marine jurassic carbonates of the Calabozo Formation (Dessanti, 1973) were carried out to reconstruct the palaeoenvironment and postdepositional history of the unit. This study is part of a project which purpose is the sedimentological and geochemical characterization of the Jurassic carbonate sequences of Cuenca Neuquina, in the southwestern Mendoza, Argentina. A detailed description about this basin can be found in Legarreta and Uliana (1999) and Riccardi et al. (2000). During the Late Bathonian and Early Callovian, the basin showed a reduction of the sedimentation area and a marked marginal facies progradation. West of Malargue, in areas with low detritic contribution, limestones of the Calabozo Formation were deposited. At the end of the Early Callovian, the basin was isolated, prevailing hypersaline conditions which caused the accumulation of the evaporites of the Tabanos Formation (Stipanicic, 1966) (au)

  20. Representaciones, turismo y Estado. Imágenes y discursos en torno de los paisajes culturales de Mendoza (Argentina

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    Cecilia Raffa

    2012-01-01

    Full Text Available En los últimos años, la provincia de Mendoza ha logrado consolidarse como uno de los principales destinos turísticos de Argentina: su paisaje la ha posicionado como lugar elegido por los turistas tanto nacionales como extranjeros. El trabajo que presentamos se propone refl exionar sobre los procesos dominantes que impulsaron la construcción del paisaje de la capital provincial, a través de la acción pública promovida por el Estado. Se analizan los procesos que los conducen, los actores que los encarnan y las imágenes resultantes que dan origen a la vez que nutren y renuevan las representaciones sociales sobre una ciudad que encuentra la clave de su identidad y gran parte de su desarrollo turístico, en el control y uso del agua.

  1. Desarrollo poblacional de Diaspidiotus perniciosus (Hemiptera: Diaspididae en cultivos de manzano de San Carlos, Mendoza, Argentina Population development of Diaspidiotus perniciosus (Hemiptera: Diaspididae in apple orchards in San Carlos, Mendoza, Argentina

    Directory of Open Access Journals (Sweden)

    Guillermo P. Lopez Garcia

    2011-12-01

    Full Text Available Se estudió la bionomía de Diaspidiotus perniciosus Comstock ("escama de San José", en manzanos de la variedad "Red delicious" de San Carlos, Mendoza, Argentina, durante los ciclos productivos 2007-2008 y 2008-2009. Se determinó el número de generaciones anuales y se estudiaron las fluctuaciones poblacionales asociadas a la integral térmica para la especie en esta región. D. perniciosus presenta dos generaciones superpuestas al ciclo del cultivo, mientras que las ninfas (N1 y N2 de la tercera generación se desarrollan solamente hasta el final de la temporada estival y pasan al estado de quiescencia, en el que permanecen durante el invierno. El desarrollo de D. perniciosus en esta zona coincide con el de esta especie en la zona frutícola del centro de Chile en cuanto al número de generaciones y al periodo de quiescencia invernal. La población quiescente en Chile está integrada predominantemente por ninfas del primer estadio (N1, mientras que en San Carlos, Mendoza, la población quiescente está integrada principalmente por ninfas del segundo estadio (N2. La similitudes entre ambas poblaciones se deben, probablemente, a las coincidencias en latitud, clima y especie hospedera. El impacto económico de D. perniciosus en la zona de estudio tiene mayor relevancia durante los meses de diciembre y enero, cuando se observa una alta incidencia de daños en los frutos y las hojas; este es el momento decisivo para implementar medidas de control fitosanitario. Estas deberán aplicarse en función de los máximos poblacionales de N1 que se producen con 600-650 Grados-Día (ºD en diciembre y con 1.170-1.270ºD en enero. En las temporadas en las que la densidad poblacional de la plaga es especialmente alta, podrían incorporarse medidas adicionales de control con 1.800-2.000ºD durante el mes de abril. Los resultados de estos estudios representan una herramienta predictiva, que permitirá elaborar estrategias para el control de poblaciones de D

  2. Distribución espacio-temporal de larvas de Chironomidae (Diptera en un arroyo andino (Uspallata, Mendoza, Argentina Spatial and temporal distribution of larvae of Chironomidae (Diptera in an Andean stream (Uspallata, Mendoza, Argentina

    Directory of Open Access Journals (Sweden)

    Erica E. Scheibler

    2008-12-01

    Full Text Available Se realizó un estudio sobre la composición larval de la familia Chironomidae en un arroyo andino en la localidad de Uspallata (Mendoza, Argentina. Se realizaron muestreos estacionales durante un ciclo anual completo (2001/2002 en tres sitios, siguiendo un gradiente altitudinal. Se midieron variables físico-químicas en campo y laboratorio. La relación entre presencia y abundancia de quironómidos y parámetros ambientales se exploró mediante un análisis de Correspondencia Canónica. Se identificaron siete géneros pertenecientes a cuatro subfamilias: Chironominae, Orthocladiinae, Podonominae y Tanypodinae. Orthocladiinae fue la subfamilia que tuvo mayor riqueza genérica (Cricotopus van der Wulp, Onconeura Andersen & Saether y Parametriocnemus Goetghebuer, densidad y frecuencia de aparición a nivel estacional y espacial. Podonominae (Podonomus Philippi y Podonomopsis Brundin se halló únicamente en SA mientras que Chironominae (Polypedilum Kieffer estuvo presente en UD. Tanypodinae (Pentaneura Philippi se encontró en los tres sitios de muestreo aunque con una densidad menor. Se detectó incremento de la conductividad y temperatura del agua, y disminución del tamaño del sustrato desde SA a UD, lo que coincide con la desaparición de Podonomus y Podonomopsis y la aparición de Polypedilum hacia UD. De este estudio se concluye que el sistema presenta baja riqueza genérica comparada con otros sistemas montañosos de Argentina.A study was conducted on the larval composition of the family Chironomidae in an Andean stream in Uspallata locality (Mendoza, Argentina. Seasonal samplings were performed over a full annual cycle (2001/2002 at three sites, along an altitudinal gradient. Physical and chemical variables were measured in both the field and the laboratory. Relationship between presence and abundance of chironomids and environmental parameters was explored using a Canonical Correspondence analysis. Seven genera were identified

  3. Stable and strontium isotopic records of molluscan shells, lower jurassic, Cuenca Neuquina, southwestern Mendoza, Argentina

    International Nuclear Information System (INIS)

    Cagnoni, M.C.; Valencio, S.A.; Ramos, A.M; Riccardi, A.C; Panarello, H.O

    2001-01-01

    The strontium, carbon and oxygen isotopic signal of the past oceans is accurately recorded by authigenic marine minerals such as carbonates, sulfates and phosphates. The variation of these isotope ratios through the geological time is used as a tool in correlating and dating marine sedimentary rocks. Many works have been done concerning to the changes in carbon, oxygen and strontium isotope ratios of different marine successions in the world. These allow the construction of curves of secular variations of the isotope signals with geological time (Jones et al., 1994a, 1994b; Veizer et al., 1999; Jacobsen and Kaufman, 1999). This work presents strontium, carbon and oxygen isotope ratios of Early Jurassic biogenic marine carbonates of Cuenca Neuquina in southwestern Mendoza (au)

  4. Genesis of sandstone-type uranium deposits in the Sierra Pintada district, Mendoza, Argentina: a Moessbauer study

    International Nuclear Information System (INIS)

    Labenski, F.; Saragovi-Badler, C.

    1982-01-01

    The genesis of sandstone-type uranium deposits in the Cochico Group (Permo-Triassic) of the Sierra Pintada district, San Rafael, Mendoza, has been studied. This is the most important uranium district in Argentina. Uranium sources, uranium transport and precipitation are discussed. Uraninite and brannerite, the main uranium minerals, occur within the matrix of sandstone. Several phenomena can be deduced regarding the depositional environment. Where oxygen was available, precipitation of hydrated ferric oxides occurred; γFe 2 O 3 .nH 2 O varieties (identified by Moessbauer spectroscopy) precipitated in the upper levels of the aquifer, where CO 2 partial pressure was lower, giving reddish or reddish-brown beds. The CO 2 partial pressure also determines the distribution of biogenic agents such as bacteria. Bacteria thus find a more favourable environment for their development and action in upper levels of an aquifer. In the corresponding horizons local reduction occurred where UO 2 precipitated; therefore the highest uranium concentrations correspond to sandstone levels with reddish or reddish-brown pigment. These pigments have been identified by Moessbauer spectroscopy. (Auth.)

  5. Diversity of Saccharomyces strains on grapes and winery surfaces: analysis of their contribution to fermentative flora of Malbec wine from Mendoza (Argentina) during two consecutive years.

    Science.gov (United States)

    Mercado, L; Dalcero, A; Masuelli, R; Combina, M

    2007-06-01

    Spontaneous fermentations are still conducted by several wineries in different regions of Argentina as a common practice. Native Saccharomyces strains associated with winery equipment, grape and spontaneous fermentations of Malbec musts from "Zona Alta del Río Mendoza" region (Argentina) were investigated during 2001 and 2002 in the same cellar. Low occurrence of Saccharomyces on grapes and their limited participation during fermentation were confirmed. Strain sequential substitution during fermentation was observed. Between 30% and 60% of yeast population at the end of fermentation was coming from yeasts already present in the winery. A stable and resident Saccharomyces micro-flora in the winery was confirmed. It exhibited a dynamic behaviour during season and between years. Commercial strains were found during fermentation in different percentages, but their presence on winery equipment was low. The present work represents a first approach to winery yeast and spontaneous fermentation Saccharomyces population dynamics in an important viticultural region from Argentina that has never been characterized before. The results obtained have an important significance for the local industry, showing for the first time the real situation of the microbial ecology of alcoholic fermentation in an industrial winery from Mendoza, Argentina.

  6. Solar radiation in forested urban environments with dry climate. Case: Metropolitan Area of Mendoza, Argentina

    Directory of Open Access Journals (Sweden)

    Mariela Edith Arboit

    2014-12-01

    Full Text Available The aim of this work is to advance the understanding of the solar potential of urban residential environments which, by their morphology, and the impact of urban trees, present values of irradiance very different from full solar collection. Morphological variables of urban settings and urban trees, a very distinctive feature of the Mendoza Metropolitan Area (MMA, have a fundamental impact on the feasibility of implementing strategies for solar energy utilization in urban environments. The results achieved will contribute to modify and gradually update urban and building legislation to implement higher levels of energy efficiency and minimum environmental impacts.This work proposes to study the potential of solar collection in urban environments, analyzing eleven urban configurations selected according to their building and urban morphological characteristics.Methodologically, we have monitored the global solar irradiance on vertical plane on northern facades, completely sunny and partly sunny, affected by solid masking and arboreal masking. Results obtained so far indicate that solar masking is critical for vertical surfaces, with a reduction of the available solar energy between 2% and 66% in the winter season. However, these drawbacks caused by urban trees are compensated by benefits in the warm season: controlling the intensity of the urban heat island, absorption of pollutants, cooling and humidifying the air through evapotranspiration, reducing thermal loads of buildings, occupancy of public open spaces, and an invaluable contribution to the urban aesthetic.

  7. Arquitectura moderna: autores y producción en Mendoza - Argentina (1930-1970

    Directory of Open Access Journals (Sweden)

    Cecilia Raffa

    2013-06-01

    Full Text Available Este trabajo propone trazar un panorama general del desarrollo de la Arquitectura Moderna en Mendoza entre 1930 y 1970, a través de los autores y obras más significativos. La producción arquitectónica lograda en el período, en el presente de valor patrimonial, no cuenta con acciones gubernamentales ni legislación de protección. Esto se debe a dos razones concurrentes: La primera, desde el imaginario social el recorte temporal de lo patrimonial finaliza con la arquitectura de los años ’20 del siglo pasado. La segunda razón, la estética y la vigencia funcional de estas obras impiden poner la distancia crítica que requiere toda mirada histórica, aún más desde lo cultural. Vamos a revisar algunos autores a partir de sus trayectorias y su producción arquitectónica, con el objetivo de descubrir las singularidades de la producción local, haciendo aportes para la valoración de estos bienes y por ende para su patrimonialización.

  8. Capitalist modernization and poverty in Mendoza, Argentina. Agroindustrial development and working class life conditions, 1890-1918

    Directory of Open Access Journals (Sweden)

    Rodolfo Richard-Jorba

    2012-08-01

    Full Text Available During the last decade of the XIX century and the first two decades of the XX, the argentine province of Mendoza underwent substantial territorial, economical and society changes due to the advance of the capitalism, that formed one of the first regional economy of the country: the viticulture industry. The capitalist development produced an unknown economic expansion in which all the indicators increased in number: extent of the agrarian cultivation, wine vault installment, raise of the capacity of wine elaboration, technological improvement. Pertaining to society land subdivision, enterprise class arising and enlargement of the middle class. However, the majority of the popular sectors, enlarged by the overseas immigration, suffered life conditions characterized by low incomes which were maintained in face values during the studied period, and home and health problems that derived in the propagation of serious contagious disease and high children death rate. This article shows the contrast between a powerful productive forces development and the miserable conditions of population life.

  9. FORMACIÓN, CRISIS Y REORIENTACIONES DE LA VITIVINICULTURA EN MENDOZA Y SAN JUAN, 1970-2000. APORTES PARA EL ESTUDIO DEL SECTOR EN LA ARGENTINA

    Directory of Open Access Journals (Sweden)

    Rodolfo Richard-Jorba

    2006-12-01

    Full Text Available Las actuales provincias de Mendoza y San Juan, localizadas en el árido centro-oeste argentino, llevan a cabo sus actividades económicas principales en grandes oasis de regadío, pequeñas porciones del territorio, en las cuales se concentra más del 95% de la población. A lo largo de su historia los productos de sus viñedos fueron dotándolas de una clara identidad hasta conformar lo que hoy conocemos como la gran Región Vitivinícola Argentina.

  10. Estimación de la huella energética en agroecosistemas cultivados con vid y ajo en Mendoza, Argentina

    OpenAIRE

    Santoni, Leonardo; Hidalgo, Verónica P.; Filippini, María Flavia; Gennari, Alejandro J.

    2015-01-01

    A nivel mundial, los cultivos de mayor importancia como maíz, trigo, soja y girasol presentan una huella energétic aconocida. En Mendoza, Argentina, aún no han sido estudiados los principales cultivos de importancia socio-económica para la región, como la vid (Vitis vinifera L.), especie perenne y el ajo (Allium sativum L.), especie anual, manejados en agroecosistemas convencionales. La presencia de indicadores energéticos como Eficiencia (EE), Balance (BE) y Productividad (PE), permiten obte...

  11. Constitución y actividades de la Mesa Provincial de Educación Ambiental en la provincia de Mendoza, Argentina.

    OpenAIRE

    Gabriela Diaz Isenrath; T Bilbao; Cristian Barbosa; Susana Lagos Silnik; Nora Marlia; Silvia Musso; Oscar Ongay Ugarteche; Mirta Zarate; Elba Alicia Pescetti de Cristaldo; Mauricio Bucheri; Flora Bertolotti

    2015-01-01

    La Educación Ambiental como actividad interdisciplinaria e interinstitucional, requiere de la planificación estratégica participativa, que permita la concreción de esfuerzos que suelen realizarse de manera aislada. Se expone el proceso llevado a cabo para la constitución de la Mesa de Educación Ambiental en la provincia de Mendoza, Argentina. A partir de la discusión sobre la problemática local del Cambio Climático y los requerimientos de  medidas de adaptación, se propone el espacio en el añ...

  12. Subduction controls on Miocene back-arc lavas from Sierra de Huantraico and La Matancilla, Argentina and new 40Ar/39Ar dating from the Mendoza Region, Argentina

    DEFF Research Database (Denmark)

    Dyhr, Charlotte Thorup; Holm, Paul Martin; Llambias, Eduardo J.

    2013-01-01

    Back-arc volcanism in the western Argentinian provinces of Mendoza and Neuquén has been widespread from the Miocene to historic times. We present a detailed investigation of profiles through two of the major Miocene volcanic areas of the region, the neighboring Huantraico and LaMatancilla plateaus......, including new 40Ar/39Ar age results of major and trace elements as well as Nd, Sr and Pb isotopic data. Four million years of eruptions from 24.4 ± 0.3 Ma (2σ) of alkali olivine basalts with OIB-type incompatible trace element enrichments at La Matancilla (~36.50°S) provide evidence for the presence of back......-arc mantle devoid of subduction-related components. In contrast, the lower Huantraico lavas (~37.30°S) require an atypical back-arc mantle, almost devoid of arc-like components (e.g. low La/Ta = 15–18 and Ba/La = 12–18), but with a more depleted isotopic signature (e.g. 87Sr/86Sr, 0.7033–0.7037) than...

  13. Inserciones laborales tempranas: Los jóvenes trabajadores agrícolas en el Valle de Uco, Mendoza, Argentina Early labor markets incorporations: Agricultural young workers in the Uco Valley, Mendoza, Argentina

    Directory of Open Access Journals (Sweden)

    Gabriel I Bober

    2011-06-01

    Full Text Available Este artículo presenta las diferentes formas de inserción laboral de trabajadores jóvenes en el Valle de Uco, en la provincia de Mendoza. Durante las últimas décadas, el Valle de Uco basó su patrón de desarrollo agrícola en un modelo intensivo y empresarial de sus tres principales cultivos: los viñedos, los frutales y las hortalizas. En la actualidad, atraviesa un proceso de profunda reconversión productiva, orientada mayoritariamente hacia el mercado externo, que entre otras consecuencias pasó a modificar el funcionamiento del mercado de trabajo local. En este artículo, se contemplan las diferentes situaciones que llevan al ingreso laboral de los jóvenes en este contexto, según el momento etáreo que atraviesen. Se analiza la relación que este proceso guarda con el tamaño y la estructura de las familias y la situación socio-económica del hogar al que pertenecen. También, se examina el vínculo entre las características de los hogares y la forma de inserción de los jóvenes en el mercado de trabajo, de acuerdo al tipo de ocupación en la que se desempeñan y al destino que le dan a sus ingresos. A partir de la realización de entrevistas en profundidad a trabajadores jóvenes y a informantes clave se pudo dar cuenta de las preferencias de los jóvenes con respecto a distintos tipos de trabajos, con particular énfasis en ciertos trabajos agrícolas y, también en relación a su futuro laboral.This article deals with the different ways that young workers in the Uco Valley, at the province of Mendoza, enter to the agrarian local labour market. During the last decadas, the Uco Valley based its pattern of agricultural development in an intensive business model of its three main crops: vineyards, orchards, and vegetables. Currently, it is undergoing a process of profound restructuring of production, mainly oriented towards foreign markets, which among different consequences has modified the functioning of local labour markets. In

  14. Mid-late Holocene environments of Agua Buena locality (34050'S; 69056'W), Mendoza, Argentina

    International Nuclear Information System (INIS)

    Navarro, Diego; Paez, M M; Mehl, A; Zarate, M A

    2010-01-01

    In southern South America the acquisition of high-quality Holocene paleoclimate data is a priority due to the paucity of complete, continuous and well dated records. Here we report preliminary results from a combined sedimentological and palynological study of an alluvial fan sequence and the laterally connected sedimentary deposits of the Vega de la Cueva profile at Agua Buena east of the Andes in central Argentina. The main geomorphological units of the area were identified and mapped based on satellite image analysis and multiple field surveys. The sedimentological and pollen results allowed us to reconstruct the development of some environments. The Agua Buena record corresponds to the distal facies of the Arroyo Bayo alluvial fan starting the aggradation process prior to ca. 4100 cal yr BP. The organic-rich levels found were formed during the development of wetlands (vegas) dominated by Cyperaceae, Juncaceae and Poaceae. These highly productive environments with almost permanent water saturation were important between 4100 and 2800 cal yr BP, indicating more stable conditions. After 2800 cal yr BP, the organic content was comparatively lower with increasing sedimentation rates that are indicative of higher fluvial discharges. This information is fundamental to interpret both the pollen and charcoal records of the area and to evaluate their representativeness and potential to reconstruct past local and/or regional vegetation.

  15. Water in the Mendoza, Argentina, food processing industry: water requirements and reuse potential of industrial effluents in agriculture

    Directory of Open Access Journals (Sweden)

    Alicia Elena Duek

    2016-04-01

    Full Text Available This paper estimates the volume of water used by the Mendoza food processing industry considering different water efficiency scenarios. The potential for using food processing industry effluents for irrigation is also assessed. The methodology relies upon information collected from interviews with qualified informants from different organizations and food-processing plants in Mendoza selected from a targeted sample. Scenarios were developed using local and international secondary information sources. The results show that food processing plants in Mendoza use 19.65 hm3 of water per year; efficient water management practices would make it possible to reduce water use by 64%, i.e., to 7.11 hm3. At present, 70% of the water is used by the fruit and vegetable processing industry, 16% by wineries, 8% by mineral water bottling plants, and the remaining 6% by olive oil, beer and soft drink plants. The volume of effluents from the food processing plants in Mendoza has been estimated at 16.27 hm3 per year. Despite the seasonal variations of these effluents, and the high sodium concentration and electrical conductivity of some of them, it is possible to use them for irrigation purposes. However, because of these variables and their environmental impact, land treatment is required.

  16. CONCEITOS E ENFOQUES DOMINANTES NA GESTÃO HÍDRICA DO OASIS NORTE DA PROVÍNCIA DE MENDOZA - ARGENTINA

    Directory of Open Access Journals (Sweden)

    Virgínia Grosso

    2012-08-01

    Full Text Available Mendoza, província árida do centro-oeste da República Argentina, viveu nos últimos tempos o aprofundamento do debate sobre a problemática da escassez de água. Este trabalho tem por objetivo aproximar-se das respostas às seguintes perguntas: quais fatores construíram e contróem a denominada escassez hídrica na província? Eles se apresentam de maneira homogênea em todo o território de Mendonça? Para abordá-las, inicialmente se analisam e correlacionam os aportes teóricos da nova economia e cultura da água e da teoria população-recursos em torno da noção de escassez. Em segundo lugar, se identificaram as problemáticas hídricas (de apropriação, gestão e uso que se observam ao longo da bacia do rio Mendoza.

  17. VITICULTURA Y POLÍTICA INTERNACIONAL: EL INTENTO DE REINCORPORAR A MENDOZA Y SAN JUAN A CHILE (1820-1835

    Directory of Open Access Journals (Sweden)

    PABLO LACOSTE

    2006-06-01

    Full Text Available Entre 1830 y 1835 algunos dirigentes de Mendoza y San Juan, provincias vitivinícolas, trataron de separarse de la República Argentina y regresar a Chile, tal como en la época colonial. Durante más de dos siglos, Mendoza y San Juan fueron parte del Corregimiento de Cuyo del Reino de Chile. Esta situación cambió desde 1776 con la creación del Virreinato del Río de la Plata. Después de la Revolución de 1810, Mendoza y San Juan formaron parte de la República Argentina. Pero algunos años después de la independencia, un grupo descontento con la acción y decisiones del gobierno de Buenos Aires, inició acciones orientadas a la secesión. Este artículo investiga las razones y motivaciones socioeconómicas de este grupoBetween 1830 and 1835 some leaders of Mendoza and San Juan, wine industry oriented provinces, attempted to withdrawal from Argentina Republic, and come back to Chile such as in colonial times. During more than two centuries, Mendoza and San Juan were members of Cuyo Province in Chile's Kingdom. This situation changed since 1776 because the creation of the River Plate Viceroyalty. After Revolution of 1810, Mendoza and San Juan took part of Argentina Republic. But some years after the independence, a group discontented with de action and decision of Buenos Aires government begun the action oriented to secession. This paper explores the socioeconomic reasons and motivation of this group

  18. Assessment of aquifer contamination from on-site sanitation systems and effluent reuse in the North of Mendoza province

    OpenAIRE

    Álvarez, Amilcar; D'Elía, Mónica; Paris, Marta; Fasciolo, Graciela; Barbazza, Carla

    2011-01-01

    En la zona norte de la provincia de Mendoza se desarrollan actividades que pueden afectar la calidad natural del agua subterránea: disposición y re-uso de efluentes industriales para riego agrícola, utilización de fertilizantes, saneamiento in-situ, fugas de redes de alcantarillado, etc. En esta región, surcada superficialmente por los ríos Mendoza y Tunuyán, la sedimentación cuaternaria determinó la for...

  19. The adaptive capacity of institutions in Canada, Argentina, and Chile to droughts and floods

    NARCIS (Netherlands)

    Hurlbert, M.; Gupta, J.

    The increasing evidence of global warming calls on all states to enhance their adaptive capacity to deal with climate change. This paper compares the adaptive capacity of two Canadian provinces, the province of Mendoza, Argentina and the administrative region of Coquimbo, Chile in relation to the

  20. Taxonomía y biogeografía de cuatro especies de Psectrascelis (Coleoptera: Tenebrionidae de la Precordillera y Cordillera de los Andes en Mendoza, Argentina

    Directory of Open Access Journals (Sweden)

    Gustavo E. FLORES

    2005-01-01

    Full Text Available El género neotropical Psectrascelis Solier (Pimeliinae: Nycteliini comprende 75 especies que se distribuyen desde el sur de Perú hasta el sur de Argentina y Chile. En este aporte se revisan las cuatro especies de Psectrascelis que habitan en el noroeste de la provincia de Mendoza (Argentina, en los cordones montañosos de la Precordillera y Cordillera de los Andes: P. deplanata (Lacordaire, 1830, P. vestita (Lacordaire, 1830, P. mamillonea (Lacordaire, 1830 y P. semistrigosa Fairmaire, 1903. Se proveen redescripciones con nuevos caracteres morfológicos, fotografías de adultos y de los pronotos, e ilustraciones de genitalia masculinos. Se consigna la distribución geográfica y rangos altitudinales para cada especie, estableciendo las provincias biogeográficas que habitan. Se presenta una discusión acerca de los patrones de distribución de las especies de Psectrascelis y de otros artrópodos epigeos que habitan en los cordones montañosos de la Precordillera y Cordillera de los Andes.

  1. Diversity of aquatic insects and other associated macroinvertebrates in an arid wetland (Mendoza Province, Argentina

    Directory of Open Access Journals (Sweden)

    Erica E. SCHEIBLER

    2013-01-01

    Full Text Available El objetivo del trabajo fue expandir la evaluación de la diversidad de insectos acuáticos y macroinvertebrados asociados a lo largo del Bañado Carilauquen, usando red de mano para la columna de agua y draga de Petersen para el bentos. Adicionalmente, se exploraron diferencias y similitudes espacio-temporales en la composición cualitativa de los ensambles de invertebrados. Se realizaron muestreos estacionales en cinco tramos del Bañado Carilauquen, desde la cabecera hasta la desembocadura. Se identificaron 47 taxa; 37 fueron insectos, principalmente Coleoptera, Diptera y Hemiptera, en ese orden. La composición de macroinvertebrados estuvo mejor condicionada por la variable espacial que por la temporal, en los extremos del gradiente espacial estudiado. Fueron detectados tres grupos faunísticos: cabecera, tramo medio y desembocadura. La mayor riqueza detectada en la cabecera se correspondió con los valores más bajos de conductividad del Bañado Carilauquen. La menor diversidad y la mayor diferencia en la composición faunística fueron observadas en la desembocadura (mayores niveles de conductividad. En el tramo medio, la riqueza fue mayor a la esperada según niveles de conductividad, debido posiblemente, a la presencia de especies transitorias.

  2. Cooperation on Water management issues, Argentina : Project in the framework of Bilateral Cooperation between Argentina and the Netherlands : Case studies on water management issues in Argentina

    NARCIS (Netherlands)

    Querner, E.P.; Morabito, J.A.; Rebori, G.

    2007-01-01

    In Argentina parts of the country have problems encountered from too much water or suffer serious water shortages. The Humid Pampas encounter an increased rainfall since the 1970’s. In Mendoza Province water resources are limited and all the water from the rivers is used for agriculture, drinking

  3. LAS MUJERES BOLIVIANAS EN LAS CHACRAS, MALARGÜE, MENDOZA, ARGENTINA SU DOBLE CONDICIÓN DE MIGRANTE Y DE MUJER

    Directory of Open Access Journals (Sweden)

    María Milena Quiroz

    2013-10-01

    Full Text Available Este estudio socioeducativo fue emprendido en la región de Las Chacras, Malargüe, Mendoza, Argentina. Ha tenido como centro de estudio la mujer de la comunidad con la descripción de sus prácticas, la construcción de sus significados y las formas de participación en su realidad microlocal. La mujer, desde el enfoque de esta investigación es considerada como ser relacional y vinculante con el mundo y los demás actores sociales. Así, se han explorado las características de las tensiones del modelo patriarcal sobre la posición y las relaciones de género. El estigma de ser representada por lo débil, privado, doméstico, pasivo, incompleto y asilado, se le ha excluido de la participación social, cultural y política.Esta complejidad social contemporánea permite dilucidar la demanda y el deseo de la mujer por emprender nuevas identidades como grupo excluido en la sociedad civil y redefinir su reconocimiento de género como aquel que interviene en la cultura y en la educación de su entorno, con modos propios y particulares no impuestos.SummaryThis socioeducational study was undertaken in the region of Las Chacras, Malargüe, Mendoza and Argentina. It is focused on the women of the community and their practices, as well as the construction of its significances and different forms of participation in the micro-local reality. Based on the focus of this research, women are considered as a relational being that binds with the world and other social actors. Thus, we have explored the characteristics of the patriarchal model pressure upon gender relations. The stigma of women being represented as weak, domestic, passive, incomplete and isolated, has contributed to their exclusion from social, cultural and political participation.This contemporary social complexity allows explaining the demand and the desire of women to undertake new identities as excluded group in the civil society and redefine gender’s recognition taking into consideration

  4. Scientific development and modern wine industry: the origins and consolidation of Enology Station of Mendoza (Argentina, 1904-1920 Desarrollo científico e industria vitivinícola moderna: orígenes y consolidación de la Estación Enológica de Mendoza (Argentina, 1904- 1920

    Directory of Open Access Journals (Sweden)

    Florencia Rodríguez Vázquez

    2009-01-01

    Full Text Available In this article we propose to undertake a reconstruction of the development of the 'Estación Enológica', next to 'Escuela Nacional de Vitivinicultura', between 1904 to 1920 in Mendoza province. This study is of vital importance as we consider this place was a pioneer center in the achievement of scientific and technical studies. These were the basis for the consolidation of quality wine industry , which had many shortcomings by then, and they triggered changes in Mendoza's agroindustry. Besides, Estación Enológica became a meeting place for people who graduated from that school to share experiences and concerns. Apart from carrying out the reconstruction of the development, we will also investigate possibilities of applying these studies to vineyardsEn el presente artículo nos proponemos realizar una reconstrucción de la trayectoria de la Estación Enológica de Mendoza, anexa a la Escuela Nacional de Vitivinicultura, desde 1904 a 1920. El mismo cobra vital importancia en tanto la consideramos un centro pionero en la realización de estudios científicos y técnicos que sirvieron de base a la consolidación de una vitivinicultura de calidad -y que por entonces contaba con múltiples deficiencias- y un impulsor de cambios técnicos en la agroindustria local. A su vez, su importancia radicaría en que fue un espacio aglutinador de las experiencias e inquietudes de los enólogos graduados de la mencionada Escuela. Por último, nos referiremos a las posibilidades de recepción y divulgación de los estudios entre los vitivinicultores

  5. Bordeaux of Talca and Champagne of Mendoza: Appellations of Origin and identity contamination of wines in Argentina and Chile

    OpenAIRE

    Pablo Alberto Lacoste; Diego Ignacio Jiménez Cabrera; Félix Maximiano Briones Quiroz; Amalia Castro San Carlos; Bibiana Marcela Rendón Zapata; José Gabriel Jeffs Munizaga

    2014-01-01

    The development of Appellations of Origin (AO) is one of the wines of outstanding wine industry in Argentina and Chile subjects. Given the strong trend towards concentration of the wine industry in these two countries, it is relevant to study the AO because they represent an appropriate mechanism to reduce the gap and enhance the possibilities of SMEs. Why AO not have developed in Argentina and Chile? This article examines the causes that inhibit the development of local AO in the regional vi...

  6. Tipos de apoyo y la digitalización de las redes personales. El uso de Facebook de adolescentes rururbanos de Mendoza (Argentina

    Directory of Open Access Journals (Sweden)

    Alejandro Paredes

    2015-06-01

    Full Text Available El objetivo de este trabajo es analizar la red social virtual (en este caso Facebook de adolescentes que asisten a un colegio rururbano marginal de Mendoza (Argentina, y estudiar las percepciones que ellos manifiestan sobre los tipos de apoyo que les brinda. Se tomó a un curso del último año de una escuela secundaria compuesto por 23 alumnos de una edad promedio de 17 años (el 67% eran mujeres. En su mayoría provienen de familias cuyos padres no poseen ingresos estables. La metodología utilizada es la propia del análisis de redes sociales (realización de grafos con el software TouchGraph, análisis de centralidad, subgrupos y nodos de la red, aplicación de métodos estadísticos y metodología cualitativa (entrevistas individuales y Focus group. Con respecto al estudio de las redes personales a través del uso de Facebook, se apreció una masividad en el uso de esta red (solo dos casos no lo utilizan, no existiendo diferencias significativas según el género, en el número de amigos. Finalmente desde la percepción de los estudiantes, Facebook sirve para reforzar el apoyo informacional, tangible y afectivo, pero no tanto el apoyo axiológico.

  7. Assessing the solar potential of low-density urban environments in Andean cities with desert climates: The case of the city of Mendoza, in Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Arboit, M.; Fernandez Llano, J.C.; Rosa, C. de [Instituto de Ciencias Humanas, Sociales y Ambientales (INCIHUSA - CONICET), R and D Unit, Laboratorio de Ambiente Humano y Vivienda (LAHV), Adrian Ruiz Leal s/n, Parque General San Martin 5500, Mendoza (Argentina); Diblasi, A. [Facultad de Ciencias Economicas, UNCuyo, Centro Universitario (5500) Mendoza (Argentina)

    2008-08-15

    Energy use in the built environment is globally recognized as a key issue for sustainable urban development. In tempered-cold arid regions with a generous solar resource, adequate design and technology can substantially reduce the energy demand for space and water heating in urban buildings. This study assessed the solar potential of low-density urban environments in the city of Mendoza, Argentina. The results of the study will be used to develop technical guidelines for urban and energy planning agencies and professionals involved in the production of habitat. The study included the following successive steps: (i) selection of a representative sample of analysis units (city blocks); (ii) selection of a series of urban and building variables; (iii) definition of indicators accounting for solar masking, building's potential use of the solar radiation on the whole urban area, and availability of adequate collecting areas to satisfy high percentages of the energy demand in low-density urban environments; and (iv) insolation of potential collectors simulated by a graphic-computational model developed in the R and D unit. Only the results for solar space heating are presented in this paper. The results, direct and statistical, indicate that it is technically feasible to meet the target solar fractions. At the same time, by means of the solar recycling of existing building stocks, it is possible to considerably reduce the environmental impacts due to the extraction of materials from, and the disposal of solid wastes into, the ecosystem. (author)

  8. Assessing the solar potential of low-density urban environments in Andean cities with desert climates: The case of the city of Mendoza, in Argentina. 2nd. Part

    Energy Technology Data Exchange (ETDEWEB)

    Arboit, M.; Mesa, A.; Fernandez Llano, J.C.; de Rosa, C. [Instituto de Ciencias Humanas, Sociales y Ambientales. (INCIHUSA - CONICET), R+D Unit: Laboratorio de Ambiente Humano y Vivienda, Adrian Ruiz Leal s/n. Parque General San Martin. (5500) Mendoza (Argentina); Diblasi, A. [Facultad de Ciencias Economicas, UNCuyo. Area Ciencias Exactas,(CRICYT - CONICET), Adrian Ruiz Leal s/n. Parque General San Martin. (5500) Mendoza (Argentina)

    2010-07-15

    Energy use in the built environment is globally recognized as a key issue for sustainable urban development. In temperate-cold arid regions with a generous solar resource, such as those of western Argentina, adequate design and technology can substantially reduce the energy demand for space and water heating in urban buildings. The solar potential of low-density residential urban areas in the city of Mendoza's Metropolitan Area (MMA), has been studied earlier in this research. Several indicators of the solar potential were elaborated. They provide necessary information when planning and designing new urban structures or refurbishing existing ones. However, a more direct indicator, relating the available solar radiation during a heating season to the space volume to be heated, the Volumetric Insolation Factor (VIF), seems to be of most practical use as far as contributing a helpful evaluation indicator, to the above mentioned design processes. The present study follows the methodological steps used in the former research, evaluating comparatively the results of a Graphic-Computational Model and a Multiple Linear Regression Statistical Model. As in the earlier study, the good fit of both models' results clearly point at the reliability of the statistical procedure and its valuable contribution of a simplified calculation tool as its by-product. (author)

  9. Manejo de enmiendas para restaurar la materia orgánica del suelo en oasisde regadío de mendoza, argentina

    Directory of Open Access Journals (Sweden)

    Abril, A.

    2014-04-01

    Full Text Available La agricultura de regadío en zonas áridas favorece la degradación de la Materia Orgánica del suelo (MO, por lo que suelen aplicarse enmiendas orgánicas con la finalidad de restaurar el contenido de MO y mejorar la disponibilidad de nutrientes para los cultivos, aunque no siempre con resultados concluyentes. En este trabajo se analizan, de manera comparativa, cuatro ensayos con diferentes sistemas de aplicación de enmiendas orgánicas (prácticas agrícolas, tipo de enmienda, dosis, frecuencia y forma de aplicación y combinación con fertilizantes químicos en oasis de regadío de Mendoza (Argentina, con la finalidad de establecer las prácticas de manejo más adecuadas para restaurar las diferentes fracciones de MO del suelo (ácidos húmicos y fúlvicos y sustancias no húmicas. El contenido de MO aumentó en el 40% de los casos analizados (n=92 y no sufrió modificaciones en el resto, mientras que los ácidos fúlvicos también aumentaron en el 40% de los casos, pero disminuyeron en el 30%. Contrariamente, los ácidos húmicos sufrieron más disminuciones que aumentos (39% vs. 26% de los casos. Estas diferencias se explican por las prácticas de manejo agrícola y las técnicas de aplicación de las enmiendas, concluyendo que: a todas las prácticas de aplicación de enmiendas aumentan en el corto plazo la MO; b la fracción humificada aumenta en el corto plazo, con la aplicación superficial sin laboreo; y c el agua de riego con alto contenido de desechos orgánicos disminuye el efecto positivo de las enmiendas sobre la MO. Por tales motivos, las prácticas de manejo recomendadas para lograr la restauración de la MO del suelo en los oasis de regadío de Mendoza son: aumentar la dosis y la frecuencia en la aplicación de enmiendas, y reducir el laboreo y el uso de aguas de reuso.

  10. [Epidemiology of caprine and ovine brucellosis in Formosa province, Argentina].

    Science.gov (United States)

    Russo, Ana M; Mancebo, Orlando A; Monzón, Carlos M; Gait, Juan J; Casco, Rubén D; Torioni de Echaide, Susana M

    2016-01-01

    An epidemiological study of brucellosis was carried out in 516 goats and mixed flocks (goat/sheep) from the three agro-ecological regions of Formosa province, Argentina. Serum samples from a total of 25401 goats and 2453 sheeps were analyzed using buffered plate agglutination test (BPAT) and complement fixation test (CFT). Bacteriological and PCR analyses on milk samples from goats in three flocks with a history of brucellosis and recent abortions were also performed. Brucellosis was detected in four of the nine departments of the province with an overall prevalence of 2% and an intra-flock prevalence ranging between 1% and 40%. The proportion of infected flocks was 3.6%, 12% and 36% for the eastern, central and western regions, respectively. Brucella melitensis bv. 1 was isolated efrom goats for the first time in the province. The expected fragments of 827bp from the omp2ab gene (Brucella spp.) and 731bp from the insert IS711 (B. melitensis) were amplified by PCR. Detection of antibodies by BPAT and FCT in sheep cohabiting with goats suggests that infections could have been caused by B. melitensis, posing an additional risk to public health. Control and eradication programs for brucellosis should consider mixed flocks as a single epidemiological unit. The results indicate that brucellosis by B. melitensis bv1 is highly endemic in the central and western regions of Formosa province. Copyright © 2015 Asociación Argentina de Microbiología. Publicado por Elsevier España, S.L.U. All rights reserved.

  11. Bordeaux of Talca and Champagne of Mendoza: Appellations of Origin and identity contamination of wines in Argentina and Chile

    Directory of Open Access Journals (Sweden)

    Pablo Alberto Lacoste

    2014-08-01

    Full Text Available The development of Appellations of Origin (AO is one of the wines of outstanding wine industry in Argentina and Chile subjects. Given the strong trend towards concentration of the wine industry in these two countries, it is relevant to study the AO because they represent an appropriate mechanism to reduce the gap and enhance the possibilities of SMEs. Why AO not have developed in Argentina and Chile? This article examines the causes that inhibit the development of local AO in the regional viticulture.

  12. Bordeaux of Talca and Champagne of Mendoza: Appellations of Origin and identity contamination of wines in Argentina and Chile

    OpenAIRE

    Lacoste, Pablo; Jiménez Cabrera, Diego Ignacio; Briones Quiroz, Félix Maximiano; Castro, Amalia; Rendón Zapata, Bibiana Marcela; Jeffs Munizaga, José Gabriel

    2014-01-01

    El desarrollo de las denominaciones de origen (DO) de los vinos es uno de los temas pendientes en la industria vitivinícola de Argentina y de Chile. Dada la fuerte tendencia a la concentración de la industria del vino en estos dos países, es relevante estudiar las DO pues representan un mecanismo adecuado para reducir la brecha y favorecer las posibilidades de las pymes. ¿Por qué no se han desarrollado las DO en Argentina y Chile? El presente artículo examina las causas que inhibieron el desa...

  13. Malnutrition and body composition in urban and rural schoolchildren: A cross-sectional study in San Rafael, Mendoza (Argentina).

    Science.gov (United States)

    Garraza, Mariela; Cesani, María F; Navone, Graciela T; Oyhenart, Evelia E

    2016-11-01

    The aim of the present study was to analyze the nutritional status and body composition of children from San Rafael, Mendoza, avoiding urban and rural categorization by generating subpopulations as a function of their socio-environmental characteristics. A cross-sectional study was performed in 3,596 schoolchildren from 4.0 to 13.9 years of age. Body weight, height, upper arm circumference, and triceps skinfold were measured. Body mass index, total muscle, and fat areas of the arm were calculated. To estimate nutritional status and body composition, the NHANES III reference was used. The socio-environmental variables were surveyed using a structured questionnaire. These variables were processed by categorical principal-component analysis (catPCA). The catPCA allowed the differentiation of four groups, three with urban characteristics (high urban, medium urban, impoverished urban), and a rural group. Stunting occurred at a higher rate in the impoverished urban group, and the occurrence of underweight children was higher in the rural group. The prevalence of excess weight varied in the range of 20-26%. The latter value corresponded to children of the high urban group, who also did not show reduced muscle mass. Children from San Rafael presented differences in nutritional condition and body composition associated with pronounced socio-environmental heterogeneity. Thus, we could observe a gradient from the "high urban" group, with better social, economic, and sanitation conditions and at the same time a more obesogenic environment to the "impoverished urban" and "rural" groups, whose vulnerability reflected a higher prevalence of child undernutrition and the association with excess weight and reduced muscle mass. Am. J. Hum. Biol. 28:796-803, 2016. © 2016Wiley Periodicals, Inc. © 2016 Wiley Periodicals, Inc.

  14. Effects of ‘hoja de malvón’ disease on the composition, sensory properties and preference of Malbec wines from Mendoza, Argentina

    Directory of Open Access Journals (Sweden)

    F Casassa

    2010-08-01

    Full Text Available F Casassa1, S Sari1, S Avagnina1, V Longone2, C Césari2, G Escoriaza2, C Catania1, M Gatica21Centro de Estudios de Enología; 2Laboratorio de Fitopatología, EEA Mendoza, Instituto Nacional de Tecnología Agropecuaria (INTA, San Martín 3853 (5507 Luján de Cuyo, Mendoza, ArgentinaAbstract: ‘Hoja de malvón’ is a grapevine wood disease widespread in Argentina that decreases vineyard productivity and longevity. This study was conducted during two consecutive vintages to assess its influence on the general composition, sensory attributes and preference of Vitis vinifera L. cv Malbec wines. Batches of 120 kg of grapes harvested from vines with different degrees of (visual symptoms of the disease were separately vinified. Grapes were grouped in three treatments: T1, grapes from vines with no symptoms; T2, grapes from vines with 10%–50% symptoms; and T3, grapes from vines with 50%–100% symptoms. Basic analyses of the grapes prior to crushing, and basic wine analysis were undertaken, together with spectrophotometric analyses of the wines after three months of bottle aging. The kinetics of alcoholic fermentation (AF was followed daily and additionally the wines were assessed by a sensory panel. T3 grapes were characterized by comparatively lower initial sugar contents and higher titratable acidity. The AF kinetics were unaffected in the wines arising from the diseased grapes. There was no clear-cut effect of the disease on the wines’ pH, volatile acidity, and total acidity; however, the later spectrophotometric analyses showed that the total phenolic index was the highest in T2 wines for both vintages. In 2005, the color index (CI was higher in T3 and showed the lowest value in 2006. The sensory properties of the wines were different in the two vintages. In 2005, T2 and T3 wines were perceived as having higher color intensity, violet hue and spicy notes, T2 being the most preferred wine. In 2006, T1 and T2 showed a much better sensory

  15. Bodegas sobresuelo y estabilidad térmica interior: análisis de envolventes tradicionales y contemporáneas en Mendoza, Argentina

    Directory of Open Access Journals (Sweden)

    Carolina Ganem Karlen

    2013-06-01

    Full Text Available El control en el intercambio de flujos energéticos interior-exterior y la inercia térmica de los materiales constructivos son características claves de la envolvente de los edificios de bodegas. Esta situación es particularmente importante en el caso de los edificios construidos sobresuelo en climas con temperaturas diarias y estacionales muy variables. En el caso de que la arquitectura no provea la respuesta adecuada, indefectiblemente se recurre al consumo de energía auxiliar. La bodega S.A., ubicada en Mendoza, Argentina, consume energía auxiliar equivalente a 2.500 kW por año. Dicha bodega sobresuelo presenta dos tipos de envolvente vertical: una tradicional en adobe (λ = 0.81W/mK y otra contemporánea en chapa galvanizada sin aislación (λ = 45 W/mK. El objetivo de este trabajo es analizar los aspectos de materialidad, inercia térmica e intercambio de flujos energéticos de envolventes tradicionales y contemporáneas y, comparar los resultados obtenidos con un caso teórico de bodega subterránea. Entre los resultados obtenidos se observa que la envolvente tradicional mantiene las temperaturas interiores entre 8,5 ºC y 10 ºC por debajo de las temperaturas exteriores, mientras que los nuevos espacios con envolventes contemporáneas lo hacen solamente 3 ºC a 5 ºC por debajo de las temperaturas exteriores. En el caso de una bodega subterránea, las temperaturas estarían estables durante el año en 16,5 ºC; esto es, en verano, 20 ºC por debajo de las temperaturas exteriores.

  16. The lower Darriwilian (Middle Ordovician) at the northern extreme of the Mendoza Precordillera, Argentina: stratigraphic and biostratigraphic implications; El Darriwiliense inferior (Ordovícico Medio) en el extremo norte de la Precordillera de Mendoza, Argentina: implicaciones estratigráficas y bioestratigráficas

    Energy Technology Data Exchange (ETDEWEB)

    Beresi, M.S.; Bordonaro, O.L.; Heredia, S.E.; Mestre, A.; Toro, B.A.

    2017-09-01

    A tectonically affected Middle Ordovician succession crops out at the Los Guanacos quarry in the sierra de Las Higueras, in the Precordillera of Mendoza, western Argentina. This is represented by the San Juan Formation which is transitionally covered by a mixed carbonate-shaly unit of dark colours, 1.5 metres thick (transfacies) which can be interpreted as the base of the Los Azules Formation. A 5-cm thick intra-bioclastic pack/grainstone bed interbedded in the lower part of this unit has been interpreted as a tempestite. It is characterized both by a millimetre-thick erosional boundary, just above the dark mudstone layer and strong mechanical distribution of bioclasts and intraclasts, suggesting sedimentary structures associated with a storm event of high energy possibly occurring in the middle part of the platform. Towards the bottom, a hummocky structure thin interval, under the dark mudstone, is interpreted as the record of another tempestite event. The mudstone represents the post-storm event reflecting the low energy of the marine water environment. The lenticular layer contains predominantly lingulid shells, trilobites and graptolites, all highly fragmented, which suggests they have been reworked and subsequently mixed and quickly redeposited during a storm event that caused the mortality of these faunas. The trilobites Mendolaspis salagastensis and indeterminate species of Matagnostidae, Illaenidae, Leiostegiidae, Encrinuridae, Telephinidae and Trinucleidae have been recorded for the first time at this locality. The conodont fauna allows the identification of the Yangtzeplacognathus crassus Zone, which indicates the lower Darriwilian (Middle Ordovician). Graptolites assignable to evisograptus cf. Levisograptus austrodentatus and Levisograptus sp. are described for the first time in the studied area and biostratigraphic implications validate the early Darriwilian age for the bearing levels. Finally, based on the studied records, correlation with different

  17. Assessment of undiscovered oil and gas resources in the Cuyo Basin Province, Argentina, 2017

    Science.gov (United States)

    Schenk, Christopher J.; Brownfield, Michael E.; Tennyson, Marilyn E.; Le, Phuong A.; Mercier, Tracey J.; Finn, Thomas M.; Hawkins, Sarah J.; Gaswirth, Stephanie B.; Marra, Kristen R.; Klett, Timothy R.; Leathers-Miller, Heidi M.; Woodall, Cheryl A.

    2017-07-18

    Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean undiscovered, technically recoverable resources of 236 million barrels of oil and 112 billion cubic feet of associated gas in the Cuyo Basin Province, Argentina.

  18. Incidencia de las plazas urbanas sobre el comportamiento térmico del entorno en alta densidad edilicia. El caso de la ciudad de Mendoza, Argentina.

    Directory of Open Access Journals (Sweden)

    susana Stocco

    2018-05-01

    Full Text Available Las plazas concebidas bajo el concepto de “plaza jardín” -modelo dominante en las ciudades de Latinoamérica- generan efectos microclimáticos a escala urbana y edilicia dado que actúan como fuente de enfriamiento nocturno. En contextos de baja y media densidad, dicho efecto está asociado fundamentalmente al diseño de la plaza: núcleo central predominantemente semi-sellado alrededor del cual se distribuyen áreas verdes a modo de bosques y prados. Sin embargo, en el caso de la ciudad de Mendoza-Argentina, la tendencia a la redensificación del tejido urbano, como estrategia de control del crecimiento urbano, limita los beneficios que proporcionan las configuraciones actuales de plazas. Es por ello que este trabajo evalúa el impacto de incrementar la dimensión de la plaza en el comportamiento térmico de la misma y su influencia sobre el microclima del entorno mediato, como alternativa para potenciar sus beneficios en áreas urbanas de alta densidad. Con tal fin, se seleccionaron tres casos de estudio, dos de ellos de una superficie equivalente a una manzana urbana –10000m2–, emplazados en entornos de media y alta densidad, y un caso de mayor superficie -40000m2-, inserto en un contexto de alta densidad. Tales casos fueron monitoreados térmicamente en la estación verano, durante un periodo de 21 días, mediante el uso de microadquisidores de datos del tipo HOBO H08-003-02. Se caracterizaron las condiciones radiativas a partir de la determinación del factor de visión de cielo (SVF. Los resultados obtenidos muestran que, al incrementar las dimensiones de la “plaza jardín”, sus diferentes estructuras -núcleo central, bosque, prado- presentan menores temperaturas respecto a su entorno durante todo el día. En consecuencia, constituye una estrategia eficiente para mejorar las prestaciones del espacio abierto respecto a sus efectos microclimáticos en entornos urbanos de alta densidad. Si bien dicha

  19. Constitución y actividades de la Mesa Provincial de Educación Ambiental en la provincia de Mendoza, Argentina.

    Directory of Open Access Journals (Sweden)

    Gabriela Diaz Isenrath

    2015-12-01

    Full Text Available La Educación Ambiental como actividad interdisciplinaria e interinstitucional, requiere de la planificación estratégica participativa, que permita la concreción de esfuerzos que suelen realizarse de manera aislada. Se expone el proceso llevado a cabo para la constitución de la Mesa de Educación Ambiental en la provincia de Mendoza, Argentina. A partir de la discusión sobre la problemática local del Cambio Climático y los requerimientos de  medidas de adaptación, se propone el espacio en el año 2013 mediante la firma de una declaración de interés entre 4 instituciones. En el año 2014 toma fuerza la iniciativa mediante la definición de objetivos y metas concretas, con la participación activa más de 10 instituciones de diversos ámbitos: educativas, científicas, técnicas, órganos de gobierno, organizaciones no gubernamentales, municipios y privados.  En el año 2015 se consolida mediante la firma de un Acta Constitutiva. Su objetivo principal es articular acciones que permitan a la comunidad tener mejores herramientas para enfrentar la complejidad de la problemática y el cuidado de nuestro ecosistema.  Se considera un espacio proactivo y participativo, abierto a la incorporación de nuevos actores. Procura establecer lineamientos de políticas públicas sobre Educación Ambiental, orientadas a la promoción de comunidades sustentables. Asimismo, aspira a ser un  órgano de articulación reconocido por ley. En su corto recorrido, ha avanzado en su organización interna, capacitaciones a docentes, sugerencias al Proyecto de Ley de Educación de la Provincia como la inclusión de la obligatoriedad de la enseñanza de la Educación Ambiental y la creación de la figura de referente ambiental en los establecimientos educativos, como así también organiza jornadas, concursos y eventos educativos a nivel provincial.

  20. Learning Networks in Innovation Systems at Sector / Regional Level in Argentina: Winery and Dairy Industries

    OpenAIRE

    Guillermo Sanchez; Roberto Bisang

    2011-01-01

    This work studies how the set of relationships that gives place to the learning processes is established in the food indus- try in Argentina. A theoretical ad hoc approach is adopted, conjugating the concepts of innovation systems at sector / regional level with some context considerations like the innovative behaviour of the global and local food industry and a description of the public and private S&T in Argentina. The study is focused in two cases: the wine industry, at the Mendoza provinc...

  1. Photovoltaic generating systems in rural schools in Neuquen Province, Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Lawand, T.A.; Campbell, J. [Brace Research Institute, Quebec (Canada)

    1997-12-01

    During the period 1994-95, solar photovoltaic systems were installed at a number of schools in Neuquen Province, Argentina, by the Provincial electric utility, Ente Provincial de Energia del Neuquen. This was undertaken with funds provided by the Inter-American Development Bank. In all, there are 12 schools that have had photovoltaic generating systems installed. These generating systems are designed to provide electricity for the basic needs at the schools: primarily for lighting, and to operate small electrical appliances such as communication radios, televisions, VCR`s, AM/FM and short-wave radios. They do not provide enough energy to operate large consumption appliances such as washing machines, microwaves, refrigerators, power tools, etc. The program of provision of PV systems was supplemented with training on simple systems for cooking food or drying fruit, etc. These techniques are primarily intended for demonstration at the schools thus serving an educational role with the hope that they will be transmitted in time to the families of the students where the need is manifested the most.

  2. New record of Boa constrictor occidentalis Philippi, 1873 (Serpentes: Boidae) in San Juan province, Argentina

    OpenAIRE

    Martínez, Tomás; Rodriguez Muñoz, Melina; Galdeano, Ana; Acosta, Juan

    2015-01-01

    We document the first record of Boa constrictor in Valle Fértil department, San Juan province, Argentina. The specimen was collected and deposited in the herpetological collection of the Department of Biology, Universidad Nacional San Juan. This record extends the known distribution for this species in San Juan province by 105 km.

  3. Evaluación del desempeño ambiental de dos bodegas en Mendoza (Argentina. Propuesta de reacondicionamiento térmico y energético

    Directory of Open Access Journals (Sweden)

    Carolina Ganem Karlen

    2015-06-01

    Full Text Available Este trabajo presenta la evaluación del desempeño térmico y energético de dos bodegas en la provincia de Mendoza, Argentina (32º40’ Latitud Sur, 68º51’ Longitud Oeste, 750 metros sobre el nivel del mar. Se ha escogido la vendimia (febrero-marzo como período a analizar debido a que la demanda de refrigeración es entonces mayor: toneladas de materia prima (a alrededor de 26-30ºC deben ser procesadas a 8ºC, mientras que las temperaturas exteriores se encuentran alrededor de los 38ºC. Las bodegas seleccionadas tienen la misma cantidad y calidad de producción y similar tamaño edilicio, pero diferente manejo y materialidad en la envolvente. La bodega “P” fue construida con paredes de ladrillos tradicionales, con techo metálico con aislamiento térmico y simple vidrio en ventanas; mientras que la bodega “H” se construyó parcialmente con paneles de hormigón armado con aislamiento térmico, techos metálicos con aislamiento y doble vidrio hermético en sus aberturas. Se tomaron mediciones in situ de temperatura del aire, temperatura superficial en la envolvente, humedad relativa y radiación solar, y se estudiaron en relación a los registros de consumos energéticos de cada bodega. Luego, con los datos obtenidos se ajustó un modelo generado con el software Energy Plus, el cual se utilizó para simular alternativas de mejora de la envolvente. Como resultado, ambas bodegas presentaron mejoras. Las temperaturas medidas en bodega P fueron igualadas en un promedio de 18.89°C sin el uso de energía auxiliar. En el caso de la bodega H las temperaturas medidas se optimizaron, logrando un promedio de 21.77°C, otra vez, sin el uso de energía auxiliar. Existe la posibilidad de agregar estrategias de ventilación nocturna usando las temperaturas exteriores las cuales disminuyen en 9,78°C en el período analizado. La propuesta de reacondicionamiento térmico y energético que incorpora mejoras edilicias y el manejo de la envolvente

  4. Lights and shadows of sustainable development and combat against desertification: economic rationalities in the eye of the storm. Case study involving goat producers in drylands (Mendoza, Argentina Claroscuros del desarrollo sustentable y la lucha contra la desertificación: las racionalidades económicas en el ojo de la tormenta: Estudio de caso con productores caprinos de tierras secas [Mendoza, Argentina

    Directory of Open Access Journals (Sweden)

    Laura Torres

    2010-01-01

    Full Text Available This work analyses the conflict situation present in the province's drylands between goat producers and programmes to combat desertification regarding production practices and the use producers make of natural resources. The case study tackled comprises the north-eastern extreme of Mendoza province. The , which is the hyperarid spot of the region, severely affected by desertification processes, covering an extent of 10,007 km2, and with 3015 inhabitants, where small goat breeding farms predominate. Previous studies indicate that the major causes of desertification in the area are logging of the native woodland and overgrazing which have led to improper livestock production practices. In response to this, the actions to combat desertification commonly point out the need to "raise awareness" and "build capacities" of the producers by initiating processes of change in the production systems. The proposals insist that, if the current level of pressure on resources is maintained, the already serious poverty conditions will grow worse in the future. Nevertheless, despite the efforts and funds invested, the producers seem to stubbornly persist in their present production strategies and in the dynamics of natural resource use derived from them. How to explain their refusal to consider other production options likely to result in higher profit and better environmental balance? How to explain that they act, at least apparently, against their own benefits? Against the explanations that place the producers' "culture" is the most important problem, the present work seeks to cooperate in clarifying these questions through an analysis of the different rationalities that, held by different actors, converge in the area. By using a mixed methodology, the paper analyse three dimensions: 1- The environmental resource supply, which is the basis of production activities, 2- The income attained by goat production units, and 3- The expenditures they face in terms of

  5. Assessment of continuous oil and gas resources in the San Jorge Basin Province, Argentina, 2017

    Science.gov (United States)

    Schenk, Christopher J.; Mercier, Tracey J.; Hawkins, Sarah J.; Tennyson, Marilyn E.; Marra, Kristen R.; Finn, Thomas M.; Le, Phuong A.; Brownfield, Michael E.; Leathers-Miller, Heidi M.; Woodall, Cheryl A.

    2017-07-18

    Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean undiscovered, technically recoverable resources of 78 million barrels of oil and 8.9 trillion cubic feet of gas in the San Jorge Basin Province, Argentina.

  6. View of sand dunes in the San Juan Province of Western Argentina

    Science.gov (United States)

    1975-01-01

    A near vertical view of sand dunes in the San Juan Province of Western Argentina, as photographed from the Apollo spacecraft in Earth orbit during the joint U.S.-USSR Apollo Soyuz Test Project (ASTP) mission. The picture was taken at an altitude of 220 kilometers (136 statute miles). The photograph was taken at an altitude of 228 kilometers (141 statute miles).

  7. 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

  8. Nuevas citas de Coleoptera acuáticos y Megaloptera para la provincia de Chubut (Argentina New records of aquatic Coleoptera and Megaloptera from Chubut province (Argentina

    Directory of Open Access Journals (Sweden)

    Miguel Archangelsky

    2004-12-01

    Full Text Available Se informa acerca de nuevos hallazgos de coleópteros acuáticos, de Dytiscidae, Gyrinidae, Hydrophilidae y Elmidae para la provincia de Chubut (Argentina. También se cita por primera vez a las Sialidae (Megaloptera, género Protosialis Weele, para la República Argentina.New records of aquatic Coleoptera, in the families Dytiscidae, Gyrinidae, Hydrophilidae and Elmidae, are reported for the Chubut province (Argentina. The Sialidae (Megaloptera, genus Protosialis Weele, is reported for the first time in Argentina.

  9. El conventillo y la vivienda masiva. Medio siglo de historia sobre los espacios domésticos para sectores populares, en el área metropolitana de Mendoza (Argentina, 1900-1955

    Directory of Open Access Journals (Sweden)

    Cecilia Raffa

    2014-10-01

    Full Text Available Dónde y cómo se habitaba fueron simultáneamente temas del ámbito privado y problemáticas de injerencia estatal, como efecto de los cambios sociales, políticos y culturales producidos en las primeras décadas del siglo XX en varios países, incluida Argentina. En esos años, la habitación, la educación y la salud empezaron paulatinamente a ser incorporados a las agendas gubernamentales primero para regularlos, luego para abrirlos a los sectores de menores recursos tras el objetivo de la democratización del bienestar. Paralelamente, la renta de habitaciones y la autoconstrucción se mantuvieron como estrategias de larga duración para acceder a la vivienda, a través de variadas tipologías. El trabajo propone, sobre la base del método histórico, trazar una historia de los espacios domésticos en el Área Metropolitana de Mendoza, analizando las condicionantes de su producción y poniendo en relación la acción privada y la estatal.

  10. The inundation of 2001 in Buenos Aires province, Argentina

    OpenAIRE

    Scarpati, Olga Eugenia; Forte Lay, Juan Alberto; Capriolo, Alberto Daniel

    2009-01-01

    El presente estudio evalúa la evolución y los daños causados por la gran inundación del año 2001, en la provincia de Buenos Aires, ubicada en la principal región agrícola-ganadera de secano de la Argentina. El gobierno bonaerense estimó que las pérdidas económicas en el sector agropecuario alcanzaron cifras muy elevadas: U$S 700 millones. Pero la grave situación empezó a fines del año anterior cuando en noviembre, ya los suelos estaban con excesos de agua. Esto significa que su capacidad de a...

  11. Virulence profiles of Shiga toxin-producing Escherichia coli and other potentially diarrheagenic E.coli of bovine origin, in Mendoza, Argentina

    Directory of Open Access Journals (Sweden)

    M.A. Pizarro

    2013-12-01

    Full Text Available This study described a group of strains obtained from a slaughter house in Mendoza, in terms of their pathogenic factors, serotype, antibiotype and molecular profile. Ninety one rectal swabs and one hundred eight plating samples taken from carcasses of healthy cattle intended for meat consumption were analyzed. Both the swab and the plate samples were processed to analyze the samples for the presence of virulence genes by PCR: stx1, stx2, eae and astA. The Stx positive strains were confirmed by citotoxicity assay in Vero cells. The isolates were subsequently investigated for their O:H serotype, antimicrobial susceptibility and molecular profile by Random Amplification of Polymorphic DNA (RAPD. Twelve E.coli strains were identified by their pathogenicity. Nine were from fecal origin and three from carcasses. Three strains carried the stx1 gene, three the stx2 gene, two carried eae and four the astA gene. The detected serotypes were: O172:H-; O150:H8; O91:H21; O178:H19 and O2:H5. The strains showed a similarity around 70% by RAPD. Some of the E.coli strains belonged to serogroups known for certain life-threatening diseases in humans. Their presence in carcasses indicates the high probability of bacterial spread during slaughter and processing.

  12. Characterization of agua de Ramon marbles, Cordoba Province, Argentina

    International Nuclear Information System (INIS)

    Tourn, S.; Castro, L. . E mail: selvia@fcen.uba.ar, lilianacastro@fibertel.com.ar

    2004-01-01

    Agua de Ramon district is located in the NW of Cordoba, Argentina, between 3 49' and 30 0 52' S and 65 0 21' and 65 0 24' W, in the Eastern Pampean Range setting. It was a very important tungsten district until the end of 1950'decade when tungsten mining became of no economic interest. The objective is to report for the first time the petrological, mineralogical and geochemical characteristics of several marble lenses located in the sourthern of the area. Marble outcrops are lenticular ranging from 1 m to 80 m in length and 0.50 m to 20 m width. They appear massive, fine-grained and in light colors (white, pale green, very light brown and pale gray). These last varieties show a distinct banded structure due to little differences in color. These marbles are mainly composed of magnesian calcite accompanied by minor amounts of dolomite, forsterite, humite group minerals, tremolite, talc, serpentine and clinochlore, and scheelite, sphene, apatite and opaque minerals like hematite, magnetite, illmenite, pirrothite and pyrite as accessory minerals. Major chemical analyses indicate a relatively high SiO2 and MgO content, and minor CaO, in comparison with marbles of this type. Mineral paragenesis was useful to evaluate metamorphism conditions in this area [es

  13. Analysis of the potential for hydrogen production in the province of Cordoba, Argentina, from wind resources

    Energy Technology Data Exchange (ETDEWEB)

    Rodriguez, C.R.; Santa Cruz, R.; Aisa, S. [Universidad Empresarial Siglo 21, Monsenor Pablo Cabrera s/n calle, 5000 Cordoba (Argentina); Riso, M.; Jimenez Yob, G.; Ottogalli, R. [Subsecretaria de Infraestructuras y Programas, Ministerio de Obras y Servicios Publicos del Gobierno de la Provincia de Cordoba, Av. Poeta Lugones 12, 2do. Piso, 5000 Cordoba (Argentina); Jeandrevin, G. [Instituto Universitario Aeronautico, Avenida Fuerza Aerea km 6 1/2, 5022 Cordoba (Argentina); Leiva, E.P.M. [INFIQC, Unidad de Matematica y Fisica, Facultad de Ciencias Quimicas, Universidad Nacional de Cordoba, Haya de la Torre s/n, 5010 Cordoba (Argentina)

    2010-06-15

    The potential for hydrogen production from wind resources in the province of Cordoba, second consumer of fossil fuels for transportation in Argentina, is analyzed. Three aspects of the problem are considered: the evaluation of the hydrogen resource from wind power, the analysis of the production costs via electrolysis and the annual requirements of wind energy to generate hydrogen to fuel the vehicular transport of the province. Different scenarios were considered, including pure hydrogen as well as the so-called CNG plus, where hydrogen is mixed with compressed natural gas in a 20% V/V dilution of the former. The potential for hydrogen production from wind resources is analyzed for each department of the province, excluding those regions not suited for wind farms. The analysis takes into account the efficiency of the electrolyzer and the capacity factor of the wind power system. It is concluded that the automotive transportation could be supplied by hydrogen stemming from wind resources via electrolysis. (author)

  14. Caracterización de daños producidos por Meloidogyne Spp. (Nemata: Tylenchida en la vid en Mendoza, Argentina

    Directory of Open Access Journals (Sweden)

    Carla Vanina Dagatti

    2014-12-01

    Full Text Available El objetivo de esta investigación fue comparar y establecer relaciones entre los diferentes indicadores de crecimiento entre plantas de vid con dos niveles de infestación (alto y leve de Meloidogyne spp. El estudio se realizó en un viñedo cv Merlot, situado en Agrelo, Mendoza, donde se escogieron 2 parcelas, con y sin nematodos, con diferentes niveles de crecimiento vegetativo. Los indicadores a evaluar fueron: peso y número de racimos por planta, peso de poda, cantidad de entrenudos y área foliar de hojas y feminelas. El grado de infestación de nematodos de cada parcela se determinó mediante la técnica flotación - centrifugación. Para el análisis estadístico se utilizó la prueba de wilcoxon (Mann Whitney U y el test de student. Además, mediante un análisis de regresión lineal, se comprobó si existía relación entre los indicadores evaluados y la densidad de población de Meloidogyne spp. expresado en número de estados juveniles (J2 presentes en el suelo. Los resultados indicaron que la parcela con menor densidad poblacional de juveniles de Meloidogyne spp., presentó mayor peso promedio de madera de poda, así como también un área foliar de hojas y feminelas superior. Con respecto al peso promedio de racimos por planta, dicha parcela también superó a aquella con alta concentración de nematodos.

  15. Determinación de densidades urbanas sostenibles en base a metodología relativa al acceso solar: caso área metropolitana de Mendoza, Argentina

    Directory of Open Access Journals (Sweden)

    Jimena Gómez Piovano

    2017-06-01

    Full Text Available Uno de los retos actuales a nivel de diseño y planificación urbana consiste en la trasformación de las urbes actuales en modelos de ciudades que contemplen el cuidado del medio ambiente y la mejora de la calidad de vida de los habitantes. Los estudios realizados denotan que los conglomerados de baja densidad poblacional son los más contaminantes (Cepeda y Mardaras, 2004; Norman, Maclean, Asce & Kennedy, 2006 en consecuencia una de las mejoras urbanas a fomentar es la densificación de las ciudades. No obstante, los niveles poblacionales no son únicos y estándares, sino que deben encontrarse en relación con las características propias de cada sector. Este trabajo tiene como objetivo principal desarrollar una metodología de cálculo que permita determinar niveles poblacionales máximos contemplando los requerimientos bioclimáticos de la ciudad y garantizando el acceso al sol más igualitario para todos los habitantes de la urbe. La misma es aplicada en el Área Metropolita de Mendoza y denota que las dimensiones de las manzanas y el ancho de las calles limitan la capacidad constructiva del sector y, en consecuencia, la cantidad de personas albergable. Los resultados obtenidos dan cuenta de las densidades poblaciones máximas para los distintos sectores, las que varían entre los 49 y 400 habitantes por hectárea, siendo las manzanas angostas con calles estrechas las de menor capacidad.

  16. Ajuste de modelo fenológico para predecir el comportamiento de Lobesia botrana (Lepidoptera: Tortricidae en un viñedo de Mendoza, Argentina

    Directory of Open Access Journals (Sweden)

    Carla Vanina DAGATTI

    2015-01-01

    Full Text Available La temperatura es la variable que más incide en el desarrollo de Lobesia botrana (Den & Schiff, cuya relación ha sido estudiada mediante modelos matemáticos, como el de Touzeau. En Mendoza, en 2010 se registró la aparición de L. botrana. El objetivo de este trabajo es ajustar el modelo de Touzeau para predecir el comportamiento de la polilla. El estudio se realizó en un viñedo cv. Malbec desde 2012. Se emplearon trampas de feromonas. La temperatura se registró con un sensor datalogger. Se calculó la integral térmica con la fórmula de Touzeau con un umbral de 10ºC desde el 1 de julio de cada año. Los resultados indicaron que el primer vuelo se desarrolló el 18 y el 20 de octubre con 204,05 ± 10,73 grados día, el segundo en la primera decena de diciembre con 728,34 ± 41,95 grados día, el tercero durante la última quincena de enero con 1329,08 ± 151,35 grados día y el cuarto a mediados de febrero de 2012 y 2013, respectivamente con 1721,84 ± 116,63 grados día. Estos resultados son útiles para predecir la aparición de la plaga y como herramienta para establecer un sistema de alarma para los productores.

  17. Habitar en Tierras Secas: La Tierra Cruda como vehículo de habitabilidad en el territorio no irrigado del norte de la Provincia de Mendoza, Argentina

    Directory of Open Access Journals (Sweden)

    Virginia Miranda Gassull

    2015-12-01

    Full Text Available El territorio no irrigado del norte de la provincia de Mendoza es un vasto espacio sin acceso al bien hídrico, donde habita dispersa una población campesina de identidad originaria Huarpe. Habitar en este territorio ha sido desde hace siglos un desafío tanto al clima/ambiente como a condiciones sociopolíticas. Por lo tanto, el hábitat en tierras secas presenta particulares características respecto a su forma de gestión (autónoma, a su adaptación al ambiente y al uso de la técnica constructiva con tierra cruda: adobe. El objetivo a desarrollar aquí se sustenta en el uso actual del adobe, concebido como un vehículo que facilita la autoconstrucción y autoproducción de soluciones habitacionales en poblaciones desposeídas, ajustando su vivienda a las implicancias de un territorio árido y a un largo proceso de vulnerabilidad de derechos. Este artículo aproxima los primeros resultados de los relevamientos realizados sobre la técnica constructiva del adobe (a través de técnicas cuantitativas: encuesta y muestras in situ y las características propias del hábitat social de la población originaria Huarpe, a partir de la técnica de la observación participante.

  18. First record of the genus Typhlocybella (Hemiptera: Auchenorrhyncha: Typhlocybinae: Dikraneurini from Argentina Primer registro del género Typhlocybella (Hemiptera: Auchenorrhyncha: Typhlocybinae: Dikraneurini para Argentina

    Directory of Open Access Journals (Sweden)

    María I. Catalano

    2008-12-01

    Full Text Available The genus Typhlocybella Baker is quoted for first time for Argentina from specimens collected on maize crops in Buenos Aires, Mendoza, Córdoba and Tucumán provinces. This contribution adds taxonomic and bioecologic knowledge about the genus as well as observations about the leaf damage produced on this crop.El género Typhlocybella Baker se cita por primera vez para la Argentina a partir de ejemplares recogidos sobre cultivos de maíz en las provincias de Buenos Aires, Mendoza, Córdoba y Tucumán. En esta contribución se reúne información relevante acerca de los aspectos taxonómicos y bioecológicos del género, y se adicionan observaciones acerca de los daños foliares que provocan sobre el mencionado cultivo.

  19. Rescatando retazos de la memoria docente: la primera asociación de maestros de Mendoza, 1904-1914. Recovering fragments of teaching memory: first association of teachers in Mendoza, 1904-1914.

    Directory of Open Access Journals (Sweden)

    Patricia I. Dussel

    2014-12-01

    Full Text Available (ES El propósito de esta contribución consiste en examinar los orígenes de las primeras organiza-ciones de maestras/os de Mendoza -Argentina, surgidas a fines del siglo XIX y principios del XX. El trabajo comienza con una contextualización política y pedagógica, nacional y provincial para ubicar el escenario en el cual se insertan estas asociaciones, ligadas tanto a corrientes peda-gógicas, como líneas políticas vigentes. Finalmente se analizan las características que las definen y que serán claves en el proceso del desarrollo de las organizaciones docentes de la provincia en la primera mitad del siglo XX. (EN The purpose of this contribution is to examine the origins of the first organizations of teachers in Mendoza Argentina, which emerged in the late nineteenth and early twentieth century. The work begins with a political and pedagogical, national and provincial contextualization to locate the setting in which these associations were inserted, linked both to pedagogical trends and current policies. The author finally analyzed the characteristics that define them and that will be key in the development process of educational organizations in the province in the first half of the twen-tieth century.

  20. Influencia del uso y gestión de la envolvente en el comportamiento térmico de verano de una vivienda en la ciudad de Mendoza, Argentina

    Directory of Open Access Journals (Sweden)

    Soledad Elisa Andreoni Trentacoste

    2017-12-01

    Full Text Available En la ciudad de Mendoza, Argentina, las viviendas presentan mayoritariamente una baja calidad constructiva en relación con la falta de aislamiento de sus envolventes. Se estima que el 95% de las viviendas existentes no están aisladas en su envolvente vertical y presentan aislamiento insuficiente en techos. En un clima templado continental, con grandes amplitudes térmicas diarias y estacionales, las viviendas presentan inercia térmica como única estrategia bioclimática. En estas circunstancias, las posibilidades de gestión que ofrezca la envolvente -a través de elementos practicables y/o móviles-, son claves para la aproximación al logro del confort interior. El presente trabajo analiza la influencia del uso y gestión de las aberturas en la envolvente a cargo del usuario en una vivienda tradicional, mediante monitoreo higrotérmico, durante 59 días en verano. Para ello, se midieron dos períodos con distintas condiciones climáticas (extremas y moderadas en los que se aplicó la estrategia de ventilación natural nocturna, gracias a la cual se obtuvo 82% de horas en confort. Asimismo, se midió un período sin gestión de las aberturas en la envolvente, es decir, manteniéndolas cerradas; de lo que resultó solo un 6% de horas en confort. Se concluye, en suma, que la intervención comprometida y consciente del usuario mediante el aprovechamiento de la ventilación nocturna, en combinación con la inercia térmica del envolvente, desempeña un papel importante en el logro de condiciones térmicas en interiores que reducen el sobrecalentamiento durante el verano.

  1. El sistema lacustre de la Formación Mollar en el depocentro triásico de Santa Clara (provincia de Mendoza, Argentina The lacustrine system of the Mollar Formation in the Triassic Santa Clara Depocenter (Mendoza Province, Argentina

    Directory of Open Access Journals (Sweden)

    Luis A Spalletti

    2009-07-01

    Full Text Available El depocentro triásico de Santa Clara, Cuenca Cuyana, se caracteriza por espesos depósitos generados en ambiente lacustre. Uno de ellos, con un registro de más de 345 m, corresponde a la Formación Mollar. El tramo inferior a medio está caracterizado por una monótona sucesión de lutitas bituminosas acumuladas por decantación suspensiva en el 'off shore' anóxico de un cuerpo lacustre hidrológicamente cerrado y que muestra alto contenido de materia orgánica amorfa de origen algal y de restos de plantas terrestres muy degradadas junto a sulfuros de hierro autígenos. Intercalan areniscas finas debidas a corrientes de turbidez diluidas y carbonatas estromatolíticos. En esta sucesión se definen ciclos granocrecientes de pequeña escala (PACs que se atribuyen a episodios de expansión-retracción lacustre controlados por cambios climáticos. Asociaciones de facies heterolíticas representan los depósitos de la transición entre los ambientes de 'nearshore' y 'offshore' lacustre. La sección superior de la Formación Mollar se compone de sucesiones pelíticas con profusa bioturbación que sugieren mayor oxigenación del sustrato y se asignan a ambiente de costa afuera de un sistema lacustre holomíctico hidrológicamente abierto. Intercalan areniscas producto de flujos hiperpicnales. Depósitos de areniscas con abundantes trazas fósiles y estructuras de olas y flujos unidireccionales, representan a sectores marginales del ambiente lacustre. Además de los ciclos de alta frecuencia, en la Formación Mollar se definen tres secuencias asimétricas de mayor escala atribuidas a episodios mayores de expansión-contracción lacustre debidos a la interacción entre factores climáticos y tectónicos. El diseño de superposición granocreciente de la Formación Mollar y la gradual transición a depósitos fluviales de la sobreyacente Formación Montaña refleja asimismo una constante reducción del espacio de acomodación sedimentaria en el depocentro de Santa Clara a medida que se produjo la acumulación de los depósitos estudiados.The Triassic Santa Clara depocenter, Cuyo Basin, is characterised by thick fine-grained deposits formed in lacustrine systems. One of them, represented by the Mollar Formation, exceeds the 345 m. The lower to middle section of this unit is dominated by a monotonous succession of black shales having a high content of amorphous organic matter produced by algae and highly degraded plant remains. These deposits were formed by suspensión fallout in the anoxic 'offshore' sector of a hydrologically closed lake. Thin and fine-grained turbiditic beds and stromatolitic carbonates are intercalated in the fine-grained succession. Small-scale coarsening-upward cycles (PACs are attributed to episodes of lake expansion-retraction driven by climate change. A facies association composed of an heterolithic package represents the deposits of the transition between 'nearshore' and 'offshore' settings. The upper section of the Mollar Formation essentially consists of bioturbated mudstones suggesting a greater oxygenation of the substrate. They are assigned to the 'offshore' environment of a holomictic hydrologically open lake system. Sporadic hyperpycnal flows are documented by intercalations of sandy turbidites. Bioturbated sandstone beds with primary structures indicative of both normal and storm wave action and unidirectional flows, represent the marginal deposits of the lacustrine system. In addition to the high-frequency cycles, three larger scale asymmetrical sequences are identified in the Mollar Formation. These sequences suggest episodes of major expansion-contraction of the lake system due to the interaction between climatic and tectonic factors. The overall shallowing up stacking pattern of the Mollar Formation and the gradual transition to fluvial deposits of the overlying Montaña Formation reflects a steady reduction of accommodation space in the Santa Clara depocenter during the accumulation of the studied succession.

  2. Conflito por terra e água nos sules: Comunidades Huarpes (Mendoza, Argentina) e campo- neses do que hoje é Suape (Pernambuco, Brasil)

    OpenAIRE

    Solá Pérez, Mercedes; Miranda Gassull, Virginia

    2015-01-01

    Anais das IV Jornadas Internacionais de Problemas Latino-Americanos: Lutas, Experiências e Debates na América Latina - ISBN 978-950-793-223-6 - Orgs. Paulo Renato da Silva ; Mario Ayala ; Fabricio Pereira da Silva ; Fernando José Martins El artículo indaga sobre los conflictos territoriales específicos de comunidades desposeídas, entre dos casos de Argentina y Brasil. Se propone tomar los dos casos analizando a las comunidades que resisten en sus tierras tradicionalmente ocupadas, te...

  3. Nuevas citas de Asteraceae para la provincia de Catamarca (Argentina New records of Asteraceae for the province of Catamarca (Argentina

    Directory of Open Access Journals (Sweden)

    Susana E. Freire

    2011-06-01

    Full Text Available Se mencionan los siguientes nuevos registros de Asteráceas para la provincia de Catamarca, Argentina: Baccharis acaulis, B. boliviensis var. latifolia, B. flexuosa, B. glutinosa var. angustissima, B. stenophylla (Tribu Astereae, Eupatorium patens var. tomentosum (Tribu Eupatorieae, Cosmos bipinnatus, C. peucedanifolius var. peucedanifolius, Helianthus annuus (Tribu Heliantheae, Gamochaeta erythractis, G. longipedicellata, Gnaphalium lacteum, Tessaria integrifolia var. integrifolia (Tribu Inuleae, Chuquiraga ruscifolia (Tribu Mutisieae, Senecio crepidifolius, S. subulatus var. subulatus, Xenophyllum incisum var. incisum (Tribu Senecioneae. Se citan además el hábitat de los taxones y las provincias fitogeográficas que integran. Se propone una nueva combinación, Baccharis glutinosa Pers. var. angustissima (DC. Giuliano.The following Asteraceae are mentioned for the province of Catamarca: Baccharis acaulis, B. boliviensis var. latifolia, B. flexuosa, B. glutinosa var. angustissima, B. stenophylla (Tribe Astereae, Eupatorium patens var. tomentosum (Tribe Eupatorieae, Cosmos bipinnatus, C. peucedanifolius var. peucedanifolius, Helianthus annuus (Tribe Heliantheae, Gamochaeta erythractis, G. longipedicellata, Gnaphalium lacteum, Tessaria integrifolia var. integrifolia (Tribe Inuleae, Chuquiraga ruscifolia (Tribe Mutisieae, Senecio crepidifolius, S. subulatus var. subulatus, Xenophyllum incisum var. incisum (Tribe Senecioneae. The habitat and phytogeographic provinces of the taxa are mentioned. The following new combination is proposed: Baccharis glutinosa Pers. var. angustissima (DC. Giuliano.

  4. Resenha do livro: 'The Revolutions of 1893 in the Province of Santa F e Argentina'

    Directory of Open Access Journals (Sweden)

    Antônio E. Muniz Barreto

    1977-03-01

    Full Text Available (primeiro parágrafo do texto Ezequiel Gallo, conhecido historiador argentino, diretor do Instituto Torcuato Di Tella, assíduo colaborador da revista Desarrollo Economico e antigo membro do Instituto de Estudos Latino-Americanos da Universidade de Londres, acrescentou nesta monografia mais uma pesquisa, publicada na Inglaterra pelo Instituto acima mencionado, sobre a história de seu país. O estudo é desenvolvido a partir da sua tese de Doutor, Agricultural Colonization and Society in Argentina. The Province of Santa Fe, 1870-1895, apresentada em Oxford em 1970.

  5. Yellow and purple nutsedges survey in the southeastern Buenos Aires Province, Argentina

    Directory of Open Access Journals (Sweden)

    Eyherabide Juan José

    2001-01-01

    Full Text Available A survey of 79 fields was conducted between December 1993 and January 1994, to determine the distribution and relative importance of species of the genus Cyperus, to justify developing management strategies in the southeastern of Buenos Aires Province, Argentina. Yellow and purple nutsedge were found in 43% and 9% respectively of the surveyed fields. Thirty eight per cent of the surveyed area showed a heavy infestation of yellow nutsedge, and in 90% of cases yellow nutsedge was invading fields cultivated with summer crops and associated with one or more of other seven perennial weeds, mainly bermudagrass.

  6. Wave-power potential along the coast of the province of Buenos Aires, Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Lanfredi, N.W. (Comision de Investigaciones Cientificas de la Provincia de Buenos Aires (CIC), La Plata (Argentina) Facultad de Ciencias Naturales y Museo, UNLP, La Plata (Argentina)); Pousa, J.L. (Consejo Nacional de Investigaciones Cientificas y Tecnicas, Buenos Aires (Argentina) Facultad de Ciencias Naturales y Museo, UNLP, La Plata (Argentina)); Mazio, C.A.; Dragani, W.C. (Servicio de Hidrografia Naval, Buenos Aires (Argentina). Dept. Oceanografia)

    1992-11-01

    The coast of the Province of Buenos Aires, Argentina, has been studied to determine the wave-power potential. Using wave data (4 yr) from accelerometers, pressure sensors (1 yr) and a visual observation program (10 yr), the wave-power density was calculated at five locations. The annual average increases southwards, ranging between 2.3 kW/m at Mar de Ajo and 7.5 kW/m at Puerto Quequen. Annual averages of maximum wave power give 69 and 61.3 kW/m for Punta Medanos and Puerto Quequen, respectively. (Author).

  7. Mortality of Plutella xylostella (Lepidoptera, Plutellidae by parasitoids in the Province of Santa Fe, Argentina

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    Isabel Bertolaccini

    2011-09-01

    Full Text Available Mortality of Plutella xylostella (Lepidoptera, Plutellidae by parasitoids in the Province of Santa Fe, Argentina. Plutella xylostella (Linnaeus, 1758 (Lepidoptera, Plutellidae larvae cause severe economic damage on cabbage, Brassica oleracea L. variety capitata (Brassicaceae, in the horticultural fields in the Province of Santa Fe, Argentina. Overuse of broad spectrum insecticides affects the action of natural enemies of this insect on cabbage. The objectives of this work were to identify the parasitoids of P. xylostella and to determine their influence on larva and pupa mortality. Weekly collections of larvae and pupae were randomly conducted in cabbage crops during spring 2006 and 2007. The immature forms collected were classified according to their developmental stage: L1 and L2 (Ls = small larvae, L3 (Lm = medium larvae, L4 (Ll = large larvae, pre-pupae and pupae (P. Each individual was observed daily in the laboratory until the adult pest or parasitoid emergence. We identified parasitoids, the number of instar and the percentage of mortality of P. xylostella for each species of parasitoid. Parasitoids recorded were: Diadegma insulare (Cresson, 1875 (Hymenoptera, Ichneumonidae, Oomyzus sokolowskii (Kurdjumov, 1912 (Hymenoptera, Eulophidae, Cotesia plutellae (Kurdjumov, 1912 (Hymenoptera, Braconidae and an unidentified species of Chalcididae (Hymenoptera. Besides parasitoids, an unidentified entomopathogenic fungus was also recorded in 2006 and 2007. In 2006, the most successful parasitoids were D. insulare and O. sokolowskii, while in 2007 only D. insulare exerted a satisfactory control and it attacked the early instars of the pest.

  8. Reptiles of Chubut province, Argentina: richness, diversity, conservation status and geographic distribution maps

    Science.gov (United States)

    Minoli, Ignacio; Morando, Mariana; Avila, Luciano Javier

    2015-01-01

    Abstract An accurate estimation of species and population geographic ranges is essential for species-focused studies and conservation and management plans. Knowledge of the geographic distributions of reptiles from Patagonian Argentina is in general limited and dispersed over manuscripts from a wide variety of topics. We completed an extensive review of reptile species of central Patagonia (Argentina) based on information from a wide variety of sources. We compiled and checked geographic distribution records from published literature and museum records, including extensive new data from the LJAMM-CNP (CENPAT-CONICET) herpetological collection. Our results show that there are 52 taxa recorded for this region and the highest species richness was seen in the families Liolaemidae and Dipsadidae with 31 and 10 species, respectively. The Patagónica was the phytogeographic province most diverse in species and Phymaturus was the genus of conservation concern most strongly associated with it. We present a detailed species list with geographical information, richness species, diversity analyses with comparisons across phytogeographical provinces, conservation status, taxonomic comments and distribution maps for all of these taxa. PMID:25931966

  9. An update on the distribution and nomenclature of fleas (Order Siphonaptera of bats (Order Chiroptera and rodents (Order Rodentia from La Rioja Province, Argentina

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    M. Fernanda López Berrizbeitia

    2017-06-01

    Full Text Available The mammalian and flea fauna of La Rioja Province is one of the least known from northwestern Argentina. In this study, the distribution and nomenclature of 13 species of fleas of bats and rodents from La Rioja Province are updated. Four species of fleas are recorded for the first time in La Rioja Province including a new record for northwestern Argentina, and two new flea-host associations. An identification key and distribution map are included for all known species of Siphonaptera of bats and rodents from La Rioja Province, Argentina.

  10. Mid-late Holocene environments of Agua Buena locality (34{sup 0}50'S; 69{sup 0}56'W), Mendoza, Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Navarro, Diego; Paez, M M [Laboratorio de Paleoecologia y Palinologia, Departamento de Biologia, Universidad Nacional de Mar del Plata, Funes 3350, (B7602AYL) Mar del Plata, Buenos Aires (Argentina); Mehl, A; Zarate, M A, E-mail: dnavarro@mdp.edu.a, E-mail: navarro.dd@gmail.co [INCITAP - Instituto de Ciencias de la Tierra y Ambientales de La Pampa. CONICET- Universidad Nacional de La Pampa, Uruguay 151, (L6300CLB) Santa Rosa, La Pampa (Argentina)

    2010-03-15

    In southern South America the acquisition of high-quality Holocene paleoclimate data is a priority due to the paucity of complete, continuous and well dated records. Here we report preliminary results from a combined sedimentological and palynological study of an alluvial fan sequence and the laterally connected sedimentary deposits of the Vega de la Cueva profile at Agua Buena east of the Andes in central Argentina. The main geomorphological units of the area were identified and mapped based on satellite image analysis and multiple field surveys. The sedimentological and pollen results allowed us to reconstruct the development of some environments. The Agua Buena record corresponds to the distal facies of the Arroyo Bayo alluvial fan starting the aggradation process prior to ca. 4100 cal yr BP. The organic-rich levels found were formed during the development of wetlands (vegas) dominated by Cyperaceae, Juncaceae and Poaceae. These highly productive environments with almost permanent water saturation were important between 4100 and 2800 cal yr BP, indicating more stable conditions. After 2800 cal yr BP, the organic content was comparatively lower with increasing sedimentation rates that are indicative of higher fluvial discharges. This information is fundamental to interpret both the pollen and charcoal records of the area and to evaluate their representativeness and potential to reconstruct past local and/or regional vegetation.

  11. Crisis y transformaciones recientes en la región vitivinícola argentina. Mendoza y San Juan, 1970-2005

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    Rodolfo A. Richard-Jorba

    2008-01-01

    Full Text Available El artículo traza un panorama de los cambios verificados en la vitivinicultura de la gran región productora de vinos de la Argentina durante los últimos 35 años, con especial mención a las innovaciones institucionales, impresariales, técnicas y laborales registradas. La mención de algunos antecedentes sobre un siglo de trayectoria vitivinícola permiten apreciar con mayor claridad las transformaciones recientes de la agroindustria y el papel de los diferentes actores sociales involucrados. Particularmente destacados son los cambios operados por el Estado, que actuó como promotor, regulador y empresario, desregulador y, nuevamente, promotor, pero siempre articulado con los sectores empresarios. El acelerado proceso de cambios desde la década de 1990 supuso una reorientación de la actividad, otrora concentrada en el mercado interno, para posicionar a la región en lugares de creciente relevancia en el mercado internacional de vinos finos. El análisis a escala regional se complementa, finalmente, con los cambios que se producen a escala de empresas y las estrategias que desarrollan para crecer y competir.

  12. Nocturnal feeding under artificial light conditions by Brown-hooded Gull (Larus maculipennis) in Puerto Madryn harbour (Chubut Province, Argentina)

    NARCIS (Netherlands)

    Leopold, M.F.; Philippart, C.J.M.; Yorio, P.

    2010-01-01

    This paper describes nocturnal, marine feeding behaviour in the Brown-hooded Gull (Larus maculipennis) in November 2009. The gulls assembled at night at the end of a long pier, running 800 m offshore into the Golfo Nuevo, at Puerto Madryn, Chubut Province, Argentina. Powerful lights predictably

  13. Learning Networks in Innovation Systems at Sector / Regional Level in Argentina: Winery and Dairy Industries

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    Guillermo Sanchez

    2011-11-01

    Full Text Available This work studies how the set of relationships that gives place to the learning processes is established in the food industry in Argentina. A theoretical ad hoc approach is adopted, conjugating the concepts of innovation systems at sector / regional level with some context considerations like the innovative behaviour of the global and local food industry and a description of the public and private S&T in Argentina. The study is focused in two cases: the wine industry, at the Mendoza province, and the dairy products industry at the centre of the Santa Fe province, both in Argentina. While the winery industry at the province of Mendoza exports differentiated products the dairy industry, at the central basin of the province of Santa Fe, exports commodities leaving differentiated (functional products for the domestic market. These facts determine different dynamics between them, despite of what the established set of relationships is very complex and knowledge intensive in both cases. Also, in both cases the preponderant contribution of the public institutions of science and technology as knowledge and technology source is flagged.

  14. EL NIVEL EDUCATIVO Y SOCIOECONÓMICO DEL HOGAR Y HABILIDADES PRE-LECTORAS EN ESCUELAS URBANO Y URBANO-MARGINALES DE LA PROVINCIA DE MENDOZA-ARGENTINA

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    Yanina Canales Jara

    2016-01-01

    Full Text Available En Argentina, las dificultades en la adquisición de la lectura se originan en diferencias lingüísticas asociadas al nivel sociocultural donde se desarrollan los niños. El objetivo de este artículo es analizar, en escolares de 4 y 5 años, la relación entre el nivel educativo y socioeconómico del hogar con habilidades lingüísticas precursoras de la lectura. Esta es una investigación de carácter cuantitativo y de profundidad comparativa. Se evaluaron 120 niños y niñas de salas de 4 y 5 años de Jardín de Infantes de escuelas urbanas (n= 60 y urbano-marginales (n= 60. El nivel socioeconómico del hogar y educativo de los padres se calculó a partir de datos de los registros escolares. En los niños y niñas se evaluó el nivel de vocabulario, conocimiento del nombre y sonido de la letra y conciencia fonológica. Se observó un efecto significativo de la zona sobre el nivel educativo de los padres y el socioeconómico. Se obtuvieron correlaciones positivas del nivel socioeconómico y educativo con el conocimiento del nombre y sonido de la letra. Ambas variables contextuales explicaron parte de la varianza en el conocimiento del nombre y sonido de las letras en niños y niñas de 4 años únicamente: 6% y 13% respectivamente. Los resultados sugieren que las variables contextuales influyen en el conocimiento alfabético pre-escolar que presentan los niños y las niñas y que la intervención pedagógica recibida en la escuela promueve el desarrollo de habilidades lingüísticas. Frente a contextos socioeconómicos heterogéneos, la educación escolar es una variable protectora que regula las desigualdades de orden social promoviendo el desarrollo de habilidades lingüísticas precursoras de la lectura al inicio de la escolaridad.

  15. 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

  16. Estructura y estado de conservación de los bosques de Prosopis flexuosa D.C. (Fabaceae, subfamilia: Mimosoideae en el noreste de Mendoza (Argentina Structure and conservative condition of the Prosopis flexuosa D.C. (Fabaceae, subfamily: Mimosoideae woodlands in northeast Mendoza (Argentina

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    JUAN AGUSTÍN ALVAREZ

    2006-03-01

    Full Text Available La recomendación de normas de manejo que regulen el uso de los recursos forestales debe estar basada en el conocimiento de la estructura y dinámica de los mismos. El objetivo de este trabajo fue conocer la estructura poblacional de las principales unidades boscosas del bosque de Prosopis flexuosa del noreste de Mendoza, sus condiciones sanitarias y su potencial productivo. Se muestrearon un total de 1.471 algarrobos en las cuatro unidades boscosas más representativas. La densidad total de algarrobos fue la siguiente: bosque semicerrado de P. flexuosa con Atriplex lampa y Lycium tenuispinosum en valles intermédanos (Bosque 1: 181 árboles ha-1, bosque abierto de P. flexuosa con Trichomaria usillo y Suaeda divaricata en ondulaciones (Bosque 2: 155 árboles ha-1, bosque abierto de P. flexuosa con T. usillo (Bosque 3: 233 árboles ha-1 y bosque abierto de P. flexuosa con A. lampa en ondulaciones suaves (Bosque 4: 215 árboles ha-1. El análisis de componentes principales de la estructura diamétrica agrupó los sitios relevados en las distintas unidades boscosas según la proporción de árboles de diámetro basal mayor a 25 cm. Los sitios del Bosque 1 (mayor proporción de árboles grandes, se separaron de los sitios con mayor proporción árboles pequeños (bosques 2 y 4. Debido al hábito de crecimiento de los algarrobos, la cantidad de productos maderables de estos bosques es baja. Además, P. flexuosa presenta en el área un porcentaje alto de individuos con más de dos fustes, la forma en muchos casos es decumbente y la altura de los fustes es menor a un metro. Por lo tanto, el potencial forestal del bosque es bajo y el posible aprovechamiento debería realizarse a escala local, considerando la inclusión de otras actividades complementarias en zonas establecidas para tal finThe recommendation of management rules that regulate the use of forest resources must be based on the knowledge of the structure and dynamics of forests. This work

  17. 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.

  18. BIOMASS IN Eucalyptus viminalis Labill. PLANTATIONS IN BUENOS AIRES PROVINCE, ARGENTINA

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    Paula Ferrere

    2009-10-01

    Full Text Available The present work was developed in the West of Buenos Aires Province (Argentina with the objective of adjusting functions of biomass of individual trees, in their different compartments and in the understorey. Stands of Eucalyptus viminalis Labill. were identified, with ages between 4 and 14 years-old. Twenty-one individuals were felled with diameters ranging from 9,2 to 32,5 cm. Simple and multiple regression models were developed and volume, branch leaf and stem biomass were estimated. The best volume equations were based on lineal models and the most adequate behavior was obtained with d2. To estimate leaf, branch and stem, ln-ln models have been suggested, with diameter and h or only diameter. The leaf biomass presented the weakest adjustment. The distribution of trees biomass agrees with the bibliography. The proportion of crown biomass decreases with age; on the other hand, the proportion of stem biomass increases with age.

  19. [Outbreak of histoplasmosis in province of Neuquén, Patagonia Argentina].

    Science.gov (United States)

    Calanni, Liliana María; Pérez, Rufina Ana; Brasili, Susana; Schmidt, Norma Graciela; Iovannitti, Cristina Adela; Zuiani, María Fernanda; Negroni, Ricardo; Finquelievich, Jorge; Canteros, Cristina Elena

    2013-01-01

    In Argentina, there are no reports of autochthonous cases of histoplasmosis in the southern regions of the country. To report a histoplasmosis outbreak in Zapala town, Province of Neuquén, Patagonia Argentina. We evaluated the clinical and epidemiological characteristics of 5 patients involved in the outbreak. Environmental studies were conducted to determine the source of infection. The genetic profile of Histoplasma capsulatum strains isolated from the index case (IC) were compared with clinical isolates from Argentinean patients not related to the outbreak, using RAPD-PCR with primers 1281-1283. The patients were residents of Zapala, and had not visited other geographical areas before. All patients had an influenza-like syndrome, and X-ray revealed disseminated micronodular images throughout the lung parenchyma. The IC needed specific antifungal therapy; the remaining 4 patients had mild symptoms, and did not require therapy. All of them had a good clinical outcome. Strains of H. capsulatum isolated from blood culture and lung biopsy of the IC showed a genetic profile different from other strains analyzed. The presence of the fungus in the environment was demonstrated by the detection of anti-Histoplasma antibodies in BALB/c mice inoculated with soil obtained in a culvert where workers had dug up earth after a landslide. This outbreak suggests the histoplasmosis endemic area is under the 38° S parallel. Patients from Neuquén, Patagonia Argentina, with compatible symptoms of histoplasmosis should be tested, regardless of their travel or exposure history. Copyright © 2012 Revista Iberoamericana de Micología. Published by Elsevier Espana. All rights reserved.

  20. Presence of antibodies against Leptospira serovars in Chaetophractus villosus (Mammalia, Dasypodidae), La Pampa province, Argentina.

    Science.gov (United States)

    Kin, Marta S; Brihuega, Bibiana; Fort, Marcelo; Delgado, Fernando; Bedotti, Daniel; Casanave, Emma B

    2015-01-01

    Leptospirosis is a zoonosis of worldwide distribution. The aim of this study was to examine the presence of antibodies against 21 Leptospira reactive serovars in Chaetophractus villosus in La Pampa province, Argentina, using the microscopic agglutination test (MAT). Pathologic changes compatible with leptospirosis and in situ detection of the agent by immunohistochemistry were studied in 24 and 3 individuals respectively. Only 35/150 (23.3%) serum samples had antibodies against Leptospira sp. Six percent of the samples reacted with serovar Canicola, 4.7% with serovar Castellonis, 1.3% with serovar Icterohemorrhagieae and 0.7% with serovar Hardjo. Sixteen (10.6%) serum samples agglutinated with Castellonis-Icterohemorrhagiae and Canicola-Castellonis serovars, both with 4.7%, and Canicola-Hardjo and Castellonis-Canicola-Icterohemorrhagiae both with 0.6%. Fourteen animals had variable degrees of lesions, which were more severe in animals with higher serological titers (3200), and Leptospira sp. was detected in 3 animals by immunohistochemistry. These results represent the first record of the presence of Leptospira in C. villosus in La Pampa. Copyright © 2015 Asociación Argentina de Microbiología. Publicado por Elsevier España, S.L.U. All rights reserved.

  1. Risk factors associated with tuberculosis mortality in adults in six provinces of Argentina

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    Elsa Zerbini

    2017-08-01

    Full Text Available Tuberculosis (TB remains a cause of illness and death across the world, especially in developing countries and vulnerable population groups. In 2013, 1.5 million died from the disease worldwide. In Argentina, the largest proportion of TB-related deaths occurred in the northern provinces. Several international studies reported that TB mortality was related to the presence of certain comorbidities and socio-demographic characteristics. Our aim was to investigate the main risk factors associated with TB mortality in adults from six provinces in Argentina, especially those with higher TB mortality rates. A retrospective case-control study was conducted. It included all patients of =18 years with clinical and/or bacteriological TB diagnosis who underwent treatment from January 1st, 2012 to June 30th, 2013. Socio-demographic, clinical and bacteriological variables were surveyed. Information on 157 cases and 281 controls was obtained. Patients reported as deceased to the TB Control Program were considered cases, and those whose treatment result was reported as successful in the same time period were considered controls. For 111 deaths, the average time elapsed between the start of treatment and death was 2.3 months; median: 1. TB-related mortality was associated with poor TB treatment adherence (OR: 3.7 [1.9-7.3], p: 0.000, AIDS (OR: 5.29 [2.6-10.7], p: 0.000, male gender (OR: 1.7 [1.1-2.5], p: 0.009, belonging to indigenous people (OR: 7.2 [2.8-18.9], p:0. 000 and age = 50 (OR: 2.2 [1.4-3.3], p: 0.000. By multivariate analysis the two first associations were confirmed. This study sets up the basis for planning inter-program and inter-sector work to accelerate the decline in the inequitable TB mortality.

  2. Microcystis aeruginos strain [D-Leu1] Mcyst-LR producer, from Buenos Aires province, Argentina

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    Lorena Rosso

    2014-04-01

    Full Text Available Objective: To show the toxicological and phylogenetic characterization of a native Microcystis aeruginosa (M. aeruginosa strain (named CAAT 2005-3 isolated from a water body of Buenos Aires province, Argentine. Methods: A M. aeruginosa strain was isolated from the drainage canal of the sewage treatment in the town of Pila, Buenos Aires province, Argentina and acclimated to laboratory conditions. The amplification of cpcBA-IGS Phcocyanin (PC, intergenic spacer and flanking regions was carried out in order to build a phylogenetic tree. An exactive/orbitrap mass spectrometer equipped with an electrospray ionization source (Thermo Fisher Scientific, Bremen, Germany was used for the LC/ESI-HRMS microcystins analysis. The number of cell/mL and [D-Leu1] Mcyst-LR production obtained as a function of time was modelled using the Gompertz equation. Results: The phylogenetic analysis showed that the sequence clustered with others M. aeruginosa sequences obtained from NCBI. The first Argentinian strain of M. aeruginosa (CAAT 2005-3 growing under culture conditions maintains the typical colonial architecture of M. aeruginosa with profuse mucilage. M. aeruginosa CAAT 2005-3 expresses a toxin variant, that was identified by LC-HRMS/Orbitrapas as [D-Leu1] microcystin-LR ([M+H]+=1 037.8 m/z. Conclusions: [D-Leu1] microcystin-LR has been also detected in M. aeruginosa samples from Canada, Brazil and Argentina. This work provides the basis for technological development and production of analytical standards of toxins present in our region.

  3. First record of Vitalius longisternalis Bertani, 2001 (Araneae, Theraphosidae) in Argentina and notes on its natural history in Misiones province

    OpenAIRE

    Ferretti, Nelson Edgardo; Copperi, Maria Sofia; Schwerdt, Leonela Vanesa; Pompozzi, Gabriel Alejandro

    2017-01-01

    This is the first record for the tarantula Vitalius longisternalis Bertani, 2001 in Parana and Araucaria Forests, Misiones province, northeastern Argentina. Specimens were found at Iguazú National Park and Urugua-í Wildlife Reserve. Data on its natural history is provided. Fil: Ferretti, Nelson Edgardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Estudios Parasitológicos y de Vectores (i); Argentina. Universidad Nacional de ...

  4. [Health system and aboriginal communities in the province of Formosa, Argentina].

    Science.gov (United States)

    Mirassou, Cristina S

    2013-01-01

    The author comments her experience in the practice of medicine and public health among aborigines in Formosa, a long neglected province in northeast Argentina. Her experience goes through a span of 34 years, 11 in a small community in a far off region. The province has 530162 inhabitants, 43358 (6.5%) aborigines of the Wichí, Qom, and Pilagá ethnicities. Some particular public health problems of these aborigines are due to the great distance between communities and the regular medical assistance while others are related to cultural differences. The situation has gradually improved in the last 30 years due to government awareness in providing easy and close access to medical care, making the most of the abilities of local aborigines midwifes, teaching health assistants and conventional measures. The most apparent results are the decrease in infant mortality rates and the lower incidence of tuberculosis, with no deaths due to tuberculous meningitis since 1999. No less important was the opening of new opportunities for education and the teaching of both native and Spanish language in the schools retaining local customs. The changes have brought about new risks and challenges such as: traffic accidents involving youngsters riding motorcycles, alcoholism, obesity, diabetes (undiagnosed beforehand), high rate of adolescence pregnancy, and crisis of leadership within the communities.

  5. Current status of bird pest species in agroecosystems of Buenos Aires province, central Argentina

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    Codesido, M.

    2011-10-01

    Full Text Available We carried out the first assessment of abundance and distribution of bird pest species (eared dove Zenaida auriculata, monk parakeet Myiopsitta monachus, picazuro pigeon Patagioenas picazuro and spot-winged pigeon P. maculosa in the pampas of Buenos Aires province, Argentina, and analyzed their association with the presence of crops and/or introduced exotic woodlots in the rural landscape. We surveyed 35 transects located along secondary roads. Bird pest abundance was significantly higher at those sites with presence of woodlots (p<0.0001. Species-specific analyses revealed that abundance of both monk parakeet and picazuro pigeon was sensitive to the frequency of woodlots of tall and perennial tree species (Eucalyptus spp.; p<0.001, whereas eared dove abundance increased significantly with the frequency of woodlots composed by short and perennial tree species (Pinus spp., Casuarina spp.; p=0.002. Most bird pest species in the study area are more sensitive to the presence of woodlots rather than to the presence of croplands in the rural landscape. These results have practical implications, suggesting that an effective control of bird pest species in Buenos Aires province could be attained by managing exotic perennial tree species woodlots.

  6. 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

  7. Emplacement of the La Peña alkaline igneous complex, Mendoza, Argentina (33° S): Implications for the early Miocene tectonic regime in the retroarc of the Andes

    Science.gov (United States)

    Pagano, D. S.; Galliski, M. A.; Márquez-Zavalía, M. F.

    2014-03-01

    The La Peña alkaline complex (LPC) of Miocene age (18-19 Ma) lies on the eastern front of the Precordillera (32°41ʹ34ʺS, 68°59ʹ48″W, 1400-2900 m a.s.l.), 30 km northwest of Mendoza city, Argentina. It is a subcircular massif of 19 km2 and 5 km in diameter, intruded in the metasedimentary sequence of the Villavicencio Formation of Silurian-Devonian age. It is the result of integration of multiple pulses derived from one or more deep magma chambers, which form a suite of silicate rocks grouped into: a clinopyroxenite body, a central syenite facies with a large breccia zone at the contact with the clinopyroxenite, bodies of malignite, trachyte and syenite porphyry necks, and a system of radial and annular dikes of different compositions. Its subcircular geometry and dike system distribution are frequent features of intraplate plutons or plutons emplaced in post-orogenic settings. These morphostructural features characterize numerous alkaline complexes worldwide and denote the importance of magmatic pressures that cause doming with radial and annular fracturing, in a brittle country rock. However, in the LPC, the attitude of the internal fabric of plutonic and subvolcanic units and the preferential layout of dikes match the NW-SE extensional fractures widely distributed in the host rock. This feature indicates a strong tectonic control linked to the structure that facilitate space for emplacement, corresponding to the brittle shear zone parallel to the N-S stratigraphy of the country rock. Shearing produced a system of discontinuities, with a K fractal fracture pattern, given by the combination of Riedel (R), anti-Riedel (R‧), (P) and extensional (T) fracture systems, responsible for the control of melt migration by the opening of various fracture branches, but particularly through the NW-SE (T) fractures. Five different pulses would have ascent, (1) an initial one from which cumulate clinopyroxenite was formed, (2) a phase of mafic composition represented by

  8. PROFUNDIZACIÓN DEL TOPE DE PERMAFROST Y TENDENCIAS EN LA DINÁMICA CRIOGÉNICA, A PARTIR DE 1989, EN EL GLACIAR DE ESCOMBROS COMPUESTO DEL VALLE DE MORENAS COLORADAS, MENDOZA, ARGENTINA.

    Directory of Open Access Journals (Sweden)

    Darío Trombotto Liaudat

    2007-12-01

    Full Text Available Los glaciares de escombros (rockglaciers son las geoformas periglaciales con permafrost reptante más típicas e importantes, por su volumen en criosedimentos congelados y hielo, de los Andes Centrales. La presente contribución muestra ejemplos de la marcha de las temperaturas y la profundización del tope de permafrost en dos puntos de monitoreo (Balcón I y II del glaciar de escombros compuesto de Morenas Coloradas, Cordillera Frontal, en la provincia de Mendoza, Argentina. El engrosamiento de la capa activa en la lengua terminal, o límite inferior del creeping permafrost en este valle, de 4,9 m a 7,5 / 7,8 m en los últimos años, así como la tendencia de la dinámica criogénica desde 1992, y la geomorfología (termokarst inactivos en los frentes, expresan el fenómeno de calentamiento que se está detectando también en otros lugares del mundo. Estas variaciones térmicas sugieren cambios en la estructura interna de estas mesoformas. Asimismo, como otra situación geofísica paralela, el cálculo de difusividad térmica en Balcon II ( ̃ = 0.14 × 10-6 m2/s; Trombotto y Borzotta, 2007, a 3770 m de altura, permite correlacionar el bajo valor obtenido con una mejor y más larga conservación del hielo por debajo de los criorregolitos que son en este caso, principalmente, de origen volcánico. Los cambios térmicos detectados en esta zona piloto tendrían una consecuencia directa en el ambiente criogénico local y son un ejemplo para la situación regional del permafrost andino de los glaciares de escombros. Las variaciones descriptas se expresan a través de la profundización del tope de permafrost, formación de termokarst y reactivación de los más antiguos a lo largo del valle, y pérdida de movimiento, o de la criodinámica, en los taludes frontales (“narices” en la parte inferior y de menor altura de las geoformas investigadas. El trabajo promueve también a colocar mayor atención en la posible influencia que pueden tener estos

  9. [Vitamin D deficiency and osteoporosis in a rural population of Cordoba province, Argentina].

    Science.gov (United States)

    Gobbi, C; Salica, D; Pepe, G; Dotto, G; Petenian, E; Martínez, F

    2009-01-01

    Vitamin D deficiency is defined when blood levels of 25-hydroxyvitamin D (25 (OH) D) is less than ng / mmol/L. The status of Vitamin D level is associated with clinical, pathological and physiological changes as increased of parathyroid hormone, bone remodeling, osteoporosis and increased risk of fractures. Moreover,vitamin D and its metabolites are known to be associated with multiple chronic diseases as diabetes mellitus, autoimmune, cardiovascular and neoplasia diseases. To assess the vitamin D status in a rural population of Córdoba Province in Argentina and its relation with bone mineral density. We prospectively studied 31 patients over 50 years old who live in a rural population of Pampa de Achala in Córdoba Province, Argentina. This city is located in Córdoba High mountains. Blood vitamin D levels were tested in 24 patients and Bone mineral density in 31 patients. Vitamin D level was determined by HPLC. The vitamin D level were considered normal between 20-50 ng/ml in the winter season and 20-80 ng/ml in the summer season. Bone mineral density of lumbar spine and femoral neck was measured by DXA GE LUNAR DPX-L, according to World Health organization classification (37). The data were analyzed by Spearman coefficient and Chi cuadrado. The vitamin D levels samples were available in 24 patients. Mean blood Vitamin D level was 24.54 ng /ml. 8 of them (33%) had vitamin D level less than 20ng/ ml. 83% (20) of the analysed patients had vitamin D level less than 30 ng/ml and only 4 patients has vitamin D level more than 30 ng/ml. Low bone mineral density of lumbar spine and femoral neck was found in 66 % of the patients. 19 % of the patients were diagnosed of lumbar spine and femoral neck osteoporosis and 29 % of them had lumbar spine meanwhile 25 % had femoral neck. There was not statistically significant association between vitamin D level and bone mineral density analysed by Chi Cuadrado (p<0.07). A significant association was found between blood vitamin D

  10. Temporal trends in BMI in Argentina by socio-economic position and province-level economic development, 2005-2009.

    Science.gov (United States)

    Christine, Paul J; Diez Roux, Ana V; Wing, Jeffrey J; Alazraqui, Marcio; Spinelli, Hugo

    2015-04-01

    We investigated temporal trends in BMI, and assessed hypothesized predictors of trends including socio-economic position (SEP) and province-level economic development, in Argentina. Using multivariable linear regression, we evaluated cross-sectional patterning and temporal trends in BMI and examined heterogeneity in these associations by SEP and province-level economic development with nationally representative samples from Argentina in 2005 and 2009. We calculated mean annual changes in BMI for men and women to assess secular trends. Women, but not men, exhibited a strong cross-sectional inverse association between SEP and BMI, with the lowest-SEP women having an average BMI 2.55 kg/m(2) greater than the highest-SEP women. Analysis of trends revealed a mean annual increase in BMI of 0.19 kg/m(2) and 0.15 kg/m(2) for women and men, respectively, with slightly greater increases occurring in provinces with greater economic growth. No significant heterogeneity in trends existed by individual SEP. BMI is increasing rapidly over time in Argentina irrespective of various sociodemographic characteristics. Higher BMI remains more common in women of lower SEP compared with those of higher SEP.

  11. [Cross-sectional study of intestinal parasitosis in child populations in Argentina].

    Science.gov (United States)

    Navone, Graciela Teresa; Zonta, María Lorena; Cociancic, Paola; Garraza, Mariela; Gamboa, María Inés; Giambelluca, Luis Alberto; Dahinten, Silvia; Oyhenart, Evelia Edith

    2017-06-08

    Determine the distribution of intestinal parasitosis in children in nine provinces representative of Argentina's mosaic of contrasting environments. Descriptive, observational, cross-sectional study of preschool children (5 years old or under) and school-age children (6-14 years) in the provinces of Buenos Aires (sample taken between 2005 and 2013), Chubut (2010-2013), Corrientes (2012), Entre Ríos (2010-2012), Formosa (2014), La Pampa (2006), Mendoza (2008-2011), Misiones (2005-2008 and 2013), and Salta (2012-2013). Serial samples, fecal samples, and anal swabs were processed using concentration techniques. The results were analyzed by sex, age interval, and province. Frequency of parasitosis (monoparasitosis and multiple parasitoses), wealth of species, and Sørensen similarity coefficient were calculated. Misiones presented the highest frequency of parasitized children and Chubut the lowest (82.0% vs 38.4%; p parasitosis in Formosa (69.2%). The most frequent species in the majority of provinces were Blastocystis sp. and Enterobius vermicularis. Misiones presented the highest frequency of soil-transmitted helminthes (23.3%) and Mendoza the lowest (0.6%); none were found in Chubut, La Pampa, or Salta. Buenos Aires, Formosa, and Misiones presented a similar species composition, as did Chubut and La Pampa. The frequency of parasitosis in Argentina corresponds to the country's complex mosaic of climatic and socioeconomic variability and shows a declining trend from north to south and from east to west.

  12. An Environmental Management Model of Thermal Waters in Entre Ríos Province, Argentina

    Science.gov (United States)

    Pablo, Mársico Daniel; Luís, Díaz Eduardo; Ivana, Zecca; Oscar, Dallacosta; Antonio, Paz-González

    2015-04-01

    Deep exploratory drillings, i.e. those with more than 500 meters depth, have been performed in the Entre Ríos province, Argentina, in order to ascertain the presence of thermal water. Drilling began in 1994, and until now there have been 18 polls with very variable results in terms of mineralization, resource flow, and temperature. The aim of this study was to present a management model, which should allow operators of thermal complexes to further develop procedures for safeguarding the biodiversity of the ecosystems involved, both during exploration and exploitation activities. The environmental management Plan proposed is constituted by a set of technical procedures that are formulated and should be performed during the stages of exploration and exploitation of the resource, and consists of: environmental monitoring, environmental audit, public information and contingency programs. This Plan describes the measures and proposals aimed at protecting environmental quality in the area of influence of a thermal complex project, ensuring that its execution remains environmentally responsibly, and allowing implementation of specific actions to prevent or correct environmental impacts, as predicted in the evaluation of the Environmental Program. The audit of environmental impact includes and takes into account natural factors, such as water, soil, atmosphere, flora and fauna, and also cultural factors. The technical audit Plan was prepared in order to get a systematic structure and organization of the verification process, and also with regard to document the degree of implementation of the proposed mitigation measures. Finally, an environmental contingency program was implemented, and its objective was to consider the safeguarding of life and its natural environment. Thus, a guide has been developed with the main actions to be taken on a contingency, since forecast increases the efficiency of the response. The methodology developed here was adopted as the procedure

  13. Evolución del potencial atlético en la provincia de Mendoza (Argentina durante los años 1973 - 2001 = The evolution of athletic potential in the province of Mendoza from 1973 to 2001

    Directory of Open Access Journals (Sweden)

    Ana María Destefanis

    2013-03-01

    Full Text Available Estudio exploratorio descriptivo con diseño no experimental, longitudinal, retrospectivo que analiza los cambios producidos en el potencial atlético mendocino desde 1973 hasta 2001. Los resultados obtenidos por la aplicación de la prueba estadística “t” student, significativamente inferiores entre la media del potencial atlético entre el 2000-2001, respecto de la década del 80 (prueba “t” 80/00 = 0,0423. No sucedió lo mismo al compararlos con las décadas del 70 y 90 que registraron entre sí valores similares en sus rendimientos atléticos (“t” 70/00 = 0,3995 y “t” 90/00 = 0,2013. Se concluyó que la diferencia significativa en el rendimiento atlético provincial se produjo al comparar la década del 80 con los años 2000 y 2001. Por lo tanto se rechazó la Hi y se aceptó la H alternativa. Se midieron las variables que influyeron sobre la evolución de este potencial, concluyendo que su disminución tiene relación con el estado que presentan las pistas en uso, insuficientes elementos atléticos, escasa cantidad de profesores especialistas, déficit en la administración de recursos físicos y humanos de los responsables del atletismo federado y falta de proyectos que canalicen la cantidad de jóvenes que compiten en instancias escolares y no ingresan al circuito federado.-------------------------------------------------------------------------Descriptive exploratory study with non experimental longitudinal retrospective design that analyzes the changes in the athletic potential of Mendoza’s population from 1973 to 2001. The results obtained by the application of the "t" student statistic test are significantly lower for the average athletic potential between 2000 and 2001, compared with the decade of the 80s (t-test 80/00 = 0.0423. It was not the same when compared to the decades of 1970 and 1990, which showed similar values to each other in their athletic performance ("t" 70/00 = 0.3995 and t = 0.2013 90/00. The conclusion was that the significant difference in provincial athletic performance was obtained when comparing the decade of the 80s with the years 2000 and 2001. Thus, the Hi was rejected and the alternative H was accepted. The variables that influenced the evolution of this potential were measured, concluding that its decline is related to the state of the tracks in use, insufficient athletic items, lack of specialist teachers, a deficit in the administration of physical and human resources by those responsible for the athletics federation and a lack of projects to channel the number of young people competing at school level that fail to enter the federate circuit.

  14. [Fungal biomass estimation in soils from southwestern Buenos Aires province (Argentina) using calcofluor white stain].

    Science.gov (United States)

    Vázquez, María B; Amodeo, Martín R; Bianchinotti, María V

    Soil microorganisms are vital for ecosystem functioning because of the role they play in soil nutrient cycling. Agricultural practices and the intensification of land use have a negative effect on microbial activities and fungal biomass has been widely used as an indicator of soil health. The aim of this study was to analyze fungal biomass in soils from southwestern Buenos Aires province using direct fluorescent staining and to contribute to its use as an indicator of environmental changes in the ecosystem as well as to define its sensitivity to weather conditions. Soil samples were collected during two consecutive years. Soil smears were prepared and stained with two different concentrations of calcofluor, and the fungal biomass was estimated under an epifluorescence microscope. Soil fungal biomass varied between 2.23 and 26.89μg fungal C/g soil, being these values in the range expected for the studied soil type. The fungal biomass was positively related to temperature and precipitations. The methodology used was reliable, standardized and sensitive to weather conditions. The results of this study contribute information to evaluate fungal biomass in different soil types and support its use as an indicator of soil health for analyzing the impact of different agricultural practices. Copyright © 2016 Asociación Argentina de Microbiología. Publicado por Elsevier España, S.L.U. All rights reserved.

  15. Chemical quality and oxidative stability of extra virgin olive oils from San Juan province (Argentina).

    Science.gov (United States)

    Ceci, Liliana N; Mattar, Susana B; Carelli, Amalia A

    2017-10-01

    This study provides information about the chemical quality (quality indices, fatty acid profile, total polyphenols (PPs), tocopherols and pigments) and oxidative stability index (OSI) of virgin olive oils of Arbequina, Changlot Real and Coratina cultivars (San Juan province, Argentina). The influence of the cultivar and the effect of earlier harvest dates on the yields (OY), quality and OSI of the oils were also evaluated. All the oils were classified as extra virgin. The OY (L/100kg) averaged: Arbequina=13.2, Changlot Real=21.3, Coratina=18.3. The oleic acid (O) percentage, oleic to linoleic plus linolenic ratio [O/(L+Ln)], PPs and OSI were highly dependent on cultivar (Arbequina

  16. Stable isotopes and diet of hunters gatherers of southwest of Buenos Aires province (Argentina)

    International Nuclear Information System (INIS)

    Scabuzzo, Clara; Frontini, Romina; Vecchi, Rodrigo; Bayon, Cristina

    2016-01-01

    Results of the first stable isotopes analysis (δ""1"3C and δ"1"5N) of archaeological sites located in the southwest of the province of Buenos Aires (Argentina) are presented. Both the construction of an isotopic ecology and prehistoric human diets of the sector are explored. The isotopic ecology indicates diverse environments in which marine animals have enriched δ"1"3C col. values; while terrestrial species such as coypo, greater rhea and large-sized herbivores have the poorest values that are indistinguishable among the different taxa. Furthermore, ducks and a hairy armadillo showed intermediate values. Human isotopic values indicate a diet based on the consumption of meat. These proteins came predominantly from terrestrial animals complemented by marine resources. The local archaeological record is consistent with this information, as the main faunal resources are terrestrial species; nevertheless a scarce representation of marine fauna, mainly Otariids, is registered. In this paper we present the first isotopic values for the studied area and thus it is a preliminary contribution that must be further investigated with new samples

  17. [Features of Bordetella pertussis, Bordetella spp. infection and whopping cough in Córdoba province, Argentina].

    Science.gov (United States)

    Giayetto, Víctor O; Blanco, Sebastián; Mangeaud, Arnaldo; Barbás, María G; Cudolá, Analía; Gallego, Sandra V

    2017-04-01

    Whooping cough is a re-emerging infection in the world and Latin America. It was considered relevant to investigate the clinical and epidemiological profile of Bordetella spp. and Bordetella pertussis infection in Córdoba province, Argentina; evaluating, at the same time, the co-infection with virus producing respiratory infections that may be confused with whooping cough. All whooping cough suspected cases were studied by Polimerase Chain Reaction, amplifying the repeated insertion sequence (IS) 481 and the promoter gene encoding pertussis toxin, between 2011 and 2013. The data were obtained from the clinical and epidemiological records. From 2,588 whooping cough suspected cases, 11.59% was infected by Bordetella spp. and 9.16% was confirmed as Bordetella pertussis infection. The rate of infection was 7.22 and 1.84 per 100,000 for 2011 and 2012, respectively. The infection presented a seasonal tendency and it was mainly found on the group of children between 13 and 24 months old. The co-infection with virus producing respiratory infections, were uncommon. Paroxysmal cough, cyanosis and/or vomiting were predictors of the infection for Bordetella pertussis. To deal with the re-emergence of whooping cough is important the knowledge of the regional epidemiological situation. This paper shows the situation of these infections in the regional clinical and epidemiological context, and makes the information available for health decision-making.

  18. El proceso de contaminación hídrica en un oasis andino. La vida y la muerte por las acequias de Mendoza, Argentina, 1880-1980

    OpenAIRE

    María del Rosario PRIETO; Teresita Castrillejo; Patricia Dussel

    2006-01-01

    El objetivo de este artículo es estudiar, mediante evidencias documentales, el proceso de contaminación hídrica en el oasis norte de la provincia de Mendoza, desde el comienzo del desarrollo industrial (1880) hasta la actualidad, para explicar las causas del deterioro ambiental en el presente y proponer manejos hídricos alternativos. Se ha analizado también la evolución de las representaciones sociales acerca de la contaminación hídrica.

  19. Simulation of regional-scale groundwater flow in the Azul River basin, Buenos Aires Province, Argentina

    Science.gov (United States)

    Varni, Marcelo R.; Usunoff, Eduardo J.

    A three-dimensional modular model (MODFLOW) was used to simulate groundwater flow in the Azul River basin, Buenos Aires Province, Argentina, in order to assess the correctness of the conceptual model of the hydrogeological system. Simulated heads satisfactorily match observed heads in the regional water-table aquifer. Model results indicate that: (1) groundwater recharge is not uniform throughout the region but is best represented by three recharge rates, decreasing downgradient, similar to the distribution of soils and geomorphological characteristics; and (2) evapotranspiration rates are larger than previous estimates, which were made by using the Thornthwaite-Mather method. Evapotranspiration rates estimated by MODFLOW agree with results of independent studies of the region. Model results closely match historical surface-flow records, thereby suggesting that the model description of the aquifer-river relationship is correct. Résumé Un modèle modulaire tridimensionnel (MODFLOW) a été utilisé pour simuler les écoulements souterrains dans le bassin de la rivière Azul (Province de Buenos Aires, Argentine), dans le but d'évaluer la justesse du modèle conceptuel du système hydrogéologique. La piézométrie simulée s'ajuste de façon satisfaisante à celle observée pour l'ensemble de la nappe. Les résultats du modèle indiquent que: (1) la recharge de la nappe n'est pas uniforme sur toute la région, mais qu'elle est mieux approchée par trois valeurs différentes, décroissant vers l'aval-gradient, en suivant la même distribution que les sols et les caractéristiques géomorphologiques et (2) l'évapotranspiration est nettement plus importante que prévu initialement à partir de la méthode de Thornthwaite-Mather. Les valeurs d'évapotranspiration fournies par MODFLOW concordent bien avec les résultats d'autres études portant sur la région. Les résultats du modèle reproduisent convenablement les chroniques de débit des écoulements de surface

  20. Back-arc basalts from the Loncopue graben (Province of Neuquen, Argentina)

    Science.gov (United States)

    Varekamp, J. C.; Hesse, A.; Mandeville, C. W.

    2010-11-01

    Young basaltic back-arc volcanoes occur east of the main Andes chain at about 37.5°-39°S in the Loncopue graben, Province of Neuquen, Argentina. These olivine-rich basalts and trachybasalts have up to 8% MgO, with high Ni and Cr contents, but highly variable incompatible element concentrations. Mafic lava flows and cinder cones at the southern end of the graben lack phenocrystic plagioclase. The northern samples have relative Ta-Nb depletions and K, Pb and LREE enrichment. These samples strongly resemble rocks of the nearby arc volcanoes Copahue and Caviahue, including their Fe-Ti enrichment relative to the main Andes arc rocks. The Sr, Nd and Pb isotope ratios show that the source regions of these back-arc basalts are enriched in subducted components that were depleted in the aqueous mobile elements such as Cs, Sr and Ba as a result of prior extractions from the subducted complex below the main arc. Some mafic flows show slightly low 206Pb/ 204Pb and 143Nd/ 144Nd values as well as incompatible trace element ratios similar to southern Patagonia plateau back-arc basalts, suggesting contributions from an EM1 mantle source. Geothermometry and barometry suggest that the basalts crystallized and fractionated small amounts of olivine and spinel at ˜ 35 km depth at temperatures of 1170-1220 °C, at about QFM + 0.5 to QFM + 1 with 1-2% H 2O, and then rose rapidly to the surface. The Loncopue graben back-arc basalts are transitional in composition between the South Patagonia back-arc plateau basalts and the Caviahue and Copahue arc volcanoes to the northwest. The EM1 source endmember is possibly the subcontinental lithospheric mantle. Strong variations in incompatible element enrichment and isotopic compositions between closely spaced cinder cones and lava flows suggest a heterogeneous mantle source for the Loncopue graben volcanics.

  1. Wildlife vertebrate mortality in roads from Santa Fe Province, Argentina Mortalidad de vertebrados en caminos de la provincia de Santa Fe, Argentina

    Directory of Open Access Journals (Sweden)

    Andrés M. Attademo

    2011-09-01

    Full Text Available Mortality of vertebrates was monitored on 2 roads (National Road 168; NR168 and Provincial Road 1; PR1 in Santa Fe Province (Argentina from October 2007 to August 2008. These roads differed in traffic volume and surrounding landscape management conditions. We also investigated the influence of environmental variables (mean monthly air temperature and monthly total rainfall on the incidence of road kills. Two people monitored the roads on foot (1 000-m line transects, 3 times a month (36 samples per road. We found 2 024 vertebrate road killed specimens representing 61 species (7 amphibians, 15 reptiles, 32 birds, and 7 mammals. The toad Rhinella fernandezae was the most frequently killed species (n = 1307, 64.57%. NR168 had a higher incidence of vertebrate road kills, particularity for amphibians, whereas birds had a higher incidence of road kills on PR1. We found a positive correlation between precipitation and temperature with vertebrate road kills on PR1. We suggest that vertebrate road mortality is a very serious problem for the conservation of the biodiversity in Santa Fe Province-Argentina, therefore implementing mitigation measures will be necessary.Se estudió la mortalidad de vertebrados en 2 rutas (RP1: Ruta Provincial N° 1 y RN168: Ruta Nacional N° 168 de la Provincia de Santa Fe (Argentina desde octubre de 2007 hasta agosto de 2008. Estas rutas diferían en el tránsito vehicular y obras de infraestructura. Además, se investigó la influencia de variables climáticas (temperatura media mensual y precipitación total mensual con el atropellamiento de la fauna silvestre. Se realizaron de 2 a 3 transectos por mes de 1 000 m cada uno, los cuales fueron recorridos a pie por 2 observadores. Un total de 2 024 vertebrados fueron registrados distribuidos en 61 taxa (7 anfibios, 15 reptiles, 32 aves y 7 mamíferos. La especie más impactada fue el sapo Rhinella fernandezae (n = 1307, 64.57%. La RN168 presentó una alta abundancia de

  2. A new species of Tribonium Saussure, 1862 from the Province of Misiones, Argentina (Blattaria, Blaberidae, Zetoborinae).

    Science.gov (United States)

    Crespo, Francisco Antonio; Valverde, Alejandra Del Carmen; Iglesias, Mónica Sandra

    2015-03-23

    Tribonium rothi sp. n. is described from Argentina, whereas T. neospectrum and T. conspersum are recorded for the first time for that country, and their genitalia is redescribed. Femur and tibial spine armature are given and Tribonium is compared with Schistopeltis. A key to identify species of the genus Tribonium recorded in Argentina is provided.

  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. Difilobotriosis humana: Un caso en área no endémica de la Argentina Human diphyllobothriosis: A case in a non-endemic area of Argentina

    Directory of Open Access Journals (Sweden)

    Diego E. Cargnelutti

    2012-02-01

    Full Text Available La difilobotriosis es una parasitosis intestinal causada por la infección de cestodos del genero Diphyllobothrium. En la Argentina, la Patagonia Andina es considerada una zona endémica para esta parasitosis. La infección por Diphyllobothrium latum no ha sido previamente notificada en la provincia de Mendoza; en este trabajo comunicamos un caso de esta parasitosis que fue confirmada por el análisis de las características morfológicas de los huevos eliminados con la materia fecal de un paciente infectado. Se destaca la necesidad de información y capacitación de los profesionales de la salud en el diagnóstico y tratamiento de parasitosis no endémicas.Diphyllobothriosis is an intestinal parasitosis caused by cestodes infection of the genus Diphyllobothrium. In Argentina, the Andean Patagonia is considered an endemic area for this parasitosis. Diphyllobothrium latum infection has not been previously reported in the province of Mendoza, Argentina. We are now reporting then the first case. Diphyllobothriosis was confirmed by examination of morphologic characteristics of the eggs eliminated in the patients' feces. These results suggest the requirement of a more specific training of health workers in the diagnosis and treatment of non endemic parasitosis. We want to emphasize the need of health workers' education on diagnosis and treatment of endemic and non-endemic parasitosis.

  6. Recomposición económica de las burguesías regionales: la burguesía vitivinícola en la provincia de Mendoza, Argentina (1990-2011

    Directory of Open Access Journals (Sweden)

    Adriana Silvina Chazarreta

    2014-07-01

    Full Text Available Este artículo se propone comprender la recomposición de la burguesíavitivinícola en Mendoza a partir de la reestructuración de la actividadque comienza a principios de los `90. Este trabajo permite mostrar el pesorelevante que en la estructura económica, aún conservan los sectoresligados a capitales locales y/o nacionales, pese al considerable ingreso deempresas transnacionales y extranjeras. El diseño de investigación se basaen una estrategia de triangulación metodológica, combinando técnicas derecolección de datos cuantitativos y cualitativos, y el uso de distintas fuentesde datos secundarias y primarias.

  7. Geochemistry of the hydrothermal systems in the Jujuy Province, Argentina, and relationship with the regional geology

    Science.gov (United States)

    Peralta Arnold, Yesica; Cabassi, Jacopo; Tassi, Franco; Caffe, Pablo; Vaselli, Orlando

    2016-04-01

    The western sector of the Jujuy province (22°-24° S), Argentina, basically consisting of the Puna region (from 3,500 to 4,700 m a.s.l.) that borders the Central Volcanic Zone (CVZ), is characterized by sub-meridional ridges that alternate with elongated basins and by extremely voluminous intermediate and silicic ignimbrite deposits, the latter being related to late miocenic and pliocenic calderas and central volcanic edifices. In this region, several hydrothermal discharges with outlet temperatures up to 62°C occur. Among them, the Coranzulí and Pairique thermal emissions show a spatial relationship with miocenic volcanic complexes, whereas other thermal manifestations (Queñual, Orosmayo, Pirquitas, Arizutar, Cono Panizo and Rachaite) are clearly controlled by the local structural setting. Most of these thermal waters have relatively high total dissolved solids (TDS up to 46,500 mg/L), an alkaline-chloride composition and significant concentrations of B, NH4 and SiO2, i.e. they show the typical geochemical features of geothermal brine. Exceptions are the Coranzulí, Orosmayo and Rachaite springs, mainly fed by a shallow Na(Ca)-bicarbonate aquifer. The eastern sector of the province consists of the Eastern Cordillera, composed of a proterozoic basement constituted by the sedimentary sequences of the Puncoviscana Fm, and the Subandean Range, which shows wide east-vergence anticlines whose detachment levels are Silurian-Devonian shales. Both regions are separated by a major thrust that rises the Proterozoic and Eopaleozoic sequences over the Subandean System. The thermal waters in the Eastern Cordillera, namely Termas de Reyes, are characterized by alkaline-sulfate composition, temperature of ≈50°C and neutral pH. In contrast, in the Subandean Ranges, which is separated from the Eastern Cordillera by a thrust rising Proterozoic and Eopaleozoic sequences over the Subandean System, the Aguas Calientes springs are characterized by low temperature (from 21°C to

  8. Antimicrobial and antioxidant activities of Gentianella multicaulis collected on the Andean Slopes of San Juan Province, Argentina.

    Science.gov (United States)

    Lima, Beatriz; Sánchez, Marianela; Luna, Lorena; Agüero, María B; Zacchino, Susana; Filippa, Eva; Palermo, Jorge A; Tapia, Alejandro; Feresin, Gabriela E

    2012-01-01

    The infusion of the aerial parts of Gentianella multicaulis (Gillies ex Griseb.) Fabris (Gentianaceae), locally known as 'nencia', is used in San Juan Province, Argentina, as stomachic and as a bitter tonic against digestive and liver problems. The bioassay-guided isolation of G. multicaulis extracts and structural elucidation of the main compounds responsible for the antifungal and free radical scavenging activities were performed. The extracts had strong free radical scavenging effects in the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay (45-93% at 10 microg/mL) and ferric-reducing antioxidant power (FRAP) assay at 200 microg/mL. Demethylbellidifolin (4) had high antioxidant activity in the DPPH and FRAP assay. The dermatophytes Microsporum gypseum, Trichophyton mentagrophytes, and T. rubrum were moderately inhibited by the different extracts (MIC values of 125-250 microg/mL). Demethylbellidifolin (4), bellidifolin (5), and isobellidifolin (6) showed an antifungal effect (MIC values of 50 microg/mL), while swerchirin (3) was less active with a MIC value of 100 microg/mL. In addition, oleanolic acid (1) and ursolic acid (2) were also isolated. These findings demonstrate that Gentianella multicaulis collected in the mountains of the Province of San Juan, Argentina, is an important source of compounds with antifungal and antioxidant activities.

  9. 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.

  10. 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

  11. Mercado de trabajo y condiciones de vida en Mendoza a comienzos del siglo XX

    Directory of Open Access Journals (Sweden)

    Juan Manuel Cerdá

    2006-01-01

    Full Text Available El propósito del presente trabajo es analizar los cambios y las continuidades en el proceso de formación del mercado de trabajo en la provincia de Mendoza a comienzos del siglo XX. La incorporación de un número significativo de inmigrantes a finales del siglo XIX junto a un proceso de reorganización productiva asociado al desarrollo de la industria vitivinícola, implicó cambios en las relaciones sociales y en las condiciones de vida de amplios sectores de la población mendocina. Iniciado el siglo XX, la vitivinicultura se convirtió en la principal actividad productiva de la provincia y la más importante en su rubro a nivel nacional. Los viñateros, productores agroindustriales, industriales bodegueros, contratistas de viñas , etc., fueron constituyéndose en parte de una sociedad cada vez más heterogénea y diversa, producto del desarrollo capitalista que experimentó la región desde el último tercio del siglo XIX y que se insertó en el proceso de incorporación de la economía Argentina al mercado mundial. Este período resulta de suma importancia porque se determinó un sistema productivo en torno a la actividad vitivinícola de la provincia que dio forma al mercado de trabajo regional. En este contexto, la inserción de los trabajadores se dio de una manera muy dispar en el proceso productivo, caracterizado por una alta estacionalidad y una escasa especialización de la mano de obra requerida.The aim of this work is to analyze the changes and continuities during the process of formation of the labor market in the province of Mendoza in the early 1900s. Wide sectors of the Mendoza population saw their life conditions and social interactions change as a result of the absorption of a significant amount of immigrants by the end of 19 th century, together with a restructuring of production connected to the development of the wine industry. Shortly after the turn of the century, wine had become the main productive activity of that

  12. "We Have to Learn from Both Sciences": Dilemmas and Tension Concerning Higher Education of Wichí Youth in the Province of Salta (Argentina)

    Science.gov (United States)

    Ossola, María Macarena

    2017-01-01

    This article analyzes the tension generated by the admission of Wichí youths to higher education in the province of Salta (Argentina). The main goal is to show how access to higher education generates continuities and discontinuities in the indigenous social organization. The article is based on ethnographic fieldwork that examined how young Wichí…

  13. 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

  14. [First report of Echinococcus vogeli in a paca in Misiones province, Argentina].

    Science.gov (United States)

    Vizcaychipi, Katherina A; Helou, Marcia; Dematteo, Karen; Macchiaroli, Natalia; Cucher, Marcela; Rosenzvit, Mara; D'Alessandro, Antonio

    2013-01-01

    We report the first finding of Echinococcus vogeli in a paca, Cuniculus paca, in the tropical forest of Misiones, in the north of Argentina. The presence of the bush dog, Speothos venaticus, E. vogelís only natural definitive host, was also reported. The polycystic hydatids, 2 to 3 cm in diameter, were only found in the liver of an adult paca. The size range of the hooks and the relative proportion blade/handle did not show significant differences with respect to the ones reported for E. vogeli. The size of E. granulosus hooks, measured for comparison purposes, was significantly smaller (p E. vogeli in Argentina. The probability of finding neotropical echinococcosis in humans reinforces the need to expand the search for E. vogeli in Argentina. Echinococcosis due to E. vogeli is very aggressive and may cause death in about a third of the human population affected.

  15. Insights into Pleistocene palaeoenvironments and biostratigraphy in southern Buenos Aires province (Argentina) from continental deposits

    Science.gov (United States)

    Beilinson, E.; Gasparini, G. M.; Soibelzon, L. H.; Soibelzon, E.

    2015-07-01

    The coastal cliffs of the Buenos Aires province (Argentina) have been the subject of intense paleontological studies since the XIX century. Therefore, many of the type localities in which is based the late Cenozoic Pampean biostratigraphic/chronostratigraphic scheme are located in this area. In this context, the sedimentites that crop out near the mouth of the Chocorí Creek contain a set of palaeontological sites that, because of their richness and well-preserved fossil content, hold high national and international importance. The aims of the present contribution are: 1) to make a stratigraphic and sedimentological characterization of the study area; 2) to list the fauna outcropped at these palaeontological sites and establish a biostratigraphic framework; 3) to elaborate a palaeoenvironmental model for the area. The study interval was informally subdivided into a lower, middle and upper interval. Interpretation was based on the presence of a number of key features such as architectural elements; channel:overbank ratio and palaeosol occurrence. The first two intervals were interpreted as continental deposits of a fluvio-alluvial nature and are the focus of this paper. The upper interval was related to foreshore marine deposits and will be studied in a future contribution. The lower interval is characterized mainly by overbank architectural elements in which calcisols and argillic protosols were identified. Channel-fill deposits are isolated and surrounded by fine-grained overbank successions and sedimentary structures are suggestive of mixed-load transport. The contact between the lower and middle intervals is an irregular, highly erosive surface characterized by a significant vertical change in the facies. This surface defines the base of multistorey sandbodies which's internal arrangement alongside with the low participation of overbank deposits suggests deposition by a braided fluvial system. Palaeosols and vertebrate fossils were used as palaeoclimatic

  16. Liquefaction during the 1977 San Juan Province, Argentina earthquake (Ms = 7.4)

    Science.gov (United States)

    Youd, T.L.; Keefer, D.K.

    1994-01-01

    Liquefaction effects generated by the 1977 San Juan Province, Argentina, earthquake (Ms = 7.4) are described. The larger and more abundant effects were concentrated in the 60-km long band of the lowlands in the Valle del Bermejo and in an equally long band along the Rio San Juan in the Valle de Tulum. Fissures in the Valle del Bermejo were up to several hundred meters long and up to several meters wide. Sand deposits, from boils that erupted through the fissures, covered areas up to tens of square meters. Fissures generally parallelled nearby stream channels. Because the Valle del Bermejo is undeveloped, these large features caused no damage. Liquefaction in the Valle del Tulum caused important or unusual damage at several localities, including the following five sites: (1) At the Barrio Justo P. Castro, a subdivision of Caucete, liquefaction of subsurface sediments decoupled overlying, unliquefied stiff sediments, producing a form of ground failure called "ground oscillation". The associated differential ground movements pulled apart houses and pavements in extension, while shearing curbs and buckling canal linings in compression at the same locality. (2) At the Escuela Normal, in Caucete, the roof of a 30-m long single-story classroom building shifted westward relative to the foundation. That displacement fractured and tilted columns supporting the roof. The foundation was fractured at several places, leaving open cracks, as wide as 15 mm. The cumulative width of the open cracks was 48 mm, an amount roughly equivalent to the 63 mm of offset between the roof and foundation at the east end of the building. The ground and foundation beneath the building extended (or spread) laterally opening cracks and lengthening the foundation while the roof remained in place. (3) The most spectacular damage to structures at the community of San Martin was the tilting of a 6-m high water tower and the toppling of a nearby pump house into a 1-m deep crater. Similarly, a small

  17. [Detection of Chlamydia abortus in bovine reproductive losses in the province of La Pampa, Argentina].

    Science.gov (United States)

    Rojas, María Del C; Fort, Marcelo; Bettermann, Simone; Entrocassi, Carolina; Costamagna, Sixto R; Sachse, Konrad; Rodríguez Fermepin, Marcelo

    2018-01-16

    Reproductive losses linked to an infectious etiology in bovine cattle are a major economic concern worldwide. In Argentina, more than 50% of abortion cases have unknown causes. Species belonging to Chlamydiaceae family are frequent etiologic agents of abortion around the world; however, there is yet no information on their prevalence in Argentina. The objective of this work was to identify Chlamydia spp., and particularly C. abortus in reproductive losses from bovine cattle in La Pampa, Argentina. Real time PCR targeting Chlamydiaceae-specific DNA fragments was performed on 251 samples obtained from bovine abortions and stillborns, and ArrayTube was used for species identification on positive samples. Chlamydiaceae DNA was detected in 12 samples of aborted fetuses (4.78%), 83.33% (10/12) accounting for abortions and 16.66% (2/12) for stillborns. C. abortus was detected by ArrayTube in 5 cases (1.99% of all samples, and 41.67% of Chlamydiaceae positive samples). This study shows the first detection of Chlamydiaceae and C. abortus DNA on reproductive losses of bovine cattle in Argentina, and the described prevalence value (4.78%) should be taken as baseline value due to the type of samples analyzed. Detection of genetic material from Chlamydiaceae not matching any of the studied species could be due to intraspecies variants or local species not yet described. Further research on Chlamydia infections in bovine cattle in Argentina is imperative to describe their range, to analyze their economic and zoonotic implications and to make recommendations about prevention and control measures. Copyright © 2017 Asociación Argentina de Microbiología. Publicado por Elsevier España, S.L.U. All rights reserved.

  18. Coleópteros acuáticos de lagunas situadas en el noroeste de la provincia de Corrientes, Argentina Aquatic Coleoptera from ponds in the northwest of Corrientes Province, Argentina

    Directory of Open Access Journals (Sweden)

    María C. Gomez Lutz

    2012-06-01

    Full Text Available El objetivo de este estudio es contribuir al conocimiento de la biodiversidad de coleópteros acuáticos del NE argentino. Los sitios de muestreo corresponden a dos lagunas permanentes ubicadas en el departamento Capital de la provincia de Corrientes, Argentina. Los muestreos fueron realizados desde octubre de 2010 a marzo de 2011. En total, 107 especies de coleópteros, incluidas en 40 géneros y ocho familias fueron registradas: Haliplidae, Dytiscidae, Noteridae, Dryopidae, Hydrochidae, Hydrophilidae, Limnichidae y Scirtidae. La especie Berosus hamatus Knisch es un nuevo registro para la Argentina. Dos familias (Haliplidae y Dryopidae, cuatro géneros (Haliplus Latreille; Pelonomus Erichson, Onopelmus Spangler, Phaenonotum Sharp y 14 especies son citados por primera vez para la provincia de Corrientes.This study aims to improve the knowledge of aquatic Coleoptera biodiversity in northeastern Argentina. The sampling sites correspond to two permanent ponds located in the department Capital of Corrientes Province, Argentina. The samples were collected between October 2010 and March 2011. A total of 107 species of beetles, including 40 genera and 8 families were recorded: Haliplidae, Dytiscidae, Noteridae, Dryopidae, Hydrochidae, Hydrophilidae, Limnichidae and Scirtidae. Berosus hamatus Knisch is a new record for Argentina. Two families (Haliplidae and Dryopidae, four genera (Haliplus Latreille; Pelonomus Erichson, Onopelmus Spangler, Phaenonotum Sharp and 14 species are cited for the first time for Corrientes Province.

  19. Sedimentologic and paleontologic study of the southeast coast of Buenos Aires province, Argentina: A late Pleistocene Holocene paleoenvironmental reconstruction

    Science.gov (United States)

    Aramayo, S. A.; Téllez, B. Gutiérrez; Schillizzi, R. A.

    2005-10-01

    A paleoenvironmental reconstruction of the southeast coast of Buenos Aires province, Argentina, is made mainly on the basis of paleontological and paleoichnological studies, supported by sedimentological analyses and radiocarbon dating. Continental late Pleistocene and continental, transitional, and marine Holocene stratigraphic units are identified. The former comprises fossil mammals and ichnites of 16000-12,000 BP. The continental early Holocene time, ca. 8100 BP, is represented by an interdune paleoenvironment in which shallow brackish ponds were colonized by diatoms, fish, rodents, and birds. A transitional paleoenvironment in the middle Holocene—6930-6570 BP—is recorded by deposits formed by estuarine crabs. During the late Holocene, between 5000 and 4800 BP, a marine transgression was recorded by a rich mollusc fauna.

  20. Changes in the land use in the valley of Escaba (Province of Tucuman, Argentina) and their environmental implications

    International Nuclear Information System (INIS)

    Guido, E.; Sesma, P.

    2010-01-01

    The objective of this work was to evaluate changes in the land use due to the construction of a dam and reservoir in the valley of Escaba, located southwest of the province of Tucuman ( north of Argentina ) and its implications for the atmosphere. Aerial photographs and satellite images were used for the study. The results show changes in the drainage network of rivers flowing into the center of the valley, changes in base levels and the formation of wetlands of high ecological, social and economic values. The existence of archaeological sites, some of which remain under water and crop areas that have expanded into both riverbanks stands . The enclosure of the valley caused large areas of land disappear under water, altering not only the landscape but also land use and lifestyle of the population, much of which had to be relocated to higher areas

  1. TECHNICAL AND ECONOMIC ASSESSMENT OF ANAEROBIC TREATMENT OF EFFLUENTS FROM A DAIRY FARM IN BUENOS AIRES PROVINCE, ARGENTINA

    Directory of Open Access Journals (Sweden)

    Claudia Dido

    2013-12-01

    Full Text Available This paper develops an alternative sanitation to the negative environmental impacts caused by the intensification of the production system and the inadequate management of waste from a dairy farm with 1050 cows, belonging to Trenque Lauquen, Buenos Aires Province of Argentina. Anaerobic digestion technology allows the biological degradation of organic material in an oxygen free environment and it is proposed to develop a treatment system that allows evaluation of the products obtained through electricity generation and biofertilizer. The working methodology includes an analysis of preliminary data from anaerobic digestion of cattle manure, characterization of the generated waste, the design of the treatment system and a technical economic analysis. This study shows that it is possible to reach the dairy sanitation with energy benefits developing a sustainable resource and environmental management

  2. Radiological environmental monitoring around the mining sites in Argentina

    International Nuclear Information System (INIS)

    Quintana, Eduardo E.; Gomez, Juan C.; Palacios, Miguel A.

    2004-01-01

    The uranium mining industry began its development in Argentina in the fifties. Since then, several installations have operated as uranium underground mining until late seventies, when that mines were closed. Since then, open pit exploitation has been used. Milling facilities were installed in the mining areas or close to them. The environmental radiological surveillance and the impact assessment presented in this work are referred to the uranium ore mining and milling plants Tonco, in Salta province; Pichinan, in Chubut province; San Rafael and Malargue, in Mendoza province; Los Gigantes, in Cordoba province; La Estela, in San Luis province and Los Colorados in La Rioja province. The environmental radiological surveillance programme results carried out from the beginning of the operations are presented and include uranium and radium concentrations in surface waters and sediments. The results obtained in waters upstream and downstream the uranium mining complexes are compared and no significant differences were observed. Moreover, taking into consideration the critical exposition pathways of the population living in the area, no significant levels of exposition were observed. (author)

  3. Distribution of inorganic arsenic species in groundwater from Central-West Part of Santa Fe Province, Argentina

    International Nuclear Information System (INIS)

    Sigrist, Mirna; Albertengo, Antonela; Brusa, Lucila; Beldoménico, Horacio; Tudino, Mabel

    2013-01-01

    Highlights: • Study on inorganic arsenic species in groundwater for drinking in Santa Fe Argentina. • This information is currently scarce or absent in the region. • An analytical methodology based on SPE-FI-HGAAS coupling was used for speciation. • Information is given for a more accurate interpretation of the toxicological impact. - Abstract: The distribution of inorganic arsenic species in groundwater used as drinking water supply by the peri-urban and rural population from central-western area of Santa Fe Province, Argentina, was studied. An analytical methodology based on an online system of atomic absorption spectrometry with hydride generation and flow injection (FI-HGAAS) was used for total inorganic arsenic determination. For speciation purposes, the distinction between As(V) and As(III) was performed through the on line coupling of FI-HGAAS to a solid phase system based on an anionic exchanger able to retain As(V) as oxyanion, allowing As(III) to be selectively determined. The concentration of As(V) was calculated as the difference between total arsenic and As(III) concentrations. Effects of matrix interference due to the nonselective behavior of the exchange resins were carefully laid. Results for 59 samples collected from 27 localities showed an almost exclusive predominance of pentavalent forms

  4. Rating the quality of the landscape of Sierra de las Quijadas National Park, Province of San Luis, Argentina

    International Nuclear Information System (INIS)

    Maero, I.; Rivarola, D.; Tognelli, G.

    2007-01-01

    The National Park Sierra de las Quijadas is located to 120 km to the northwest of the Province of San Luis, Argentina. The study area is of 24,000 hectares, that correspond to 32 % of the total surface, this surface covers the totality with the Potrero de la Aguada and the next zones, the same one was selected because it conforms at the present time the zone of greater frequency of visitors within the Park. The objective of this work is centered in the obtaining of the Total Quality of the Landscape, having compared the demand of beauty to the rest of the other natural resources, to be able to make proposals to improve the Plan of Handling that takes ahead the Administration of National Parks. The used Methodology is the described one by Cendrero et. al. (1987), it is an indirect valuation that is carried out through the components of the landscape and allows to determine the Intrinsic Visual Quality and the Fragility of each one of the Environmental Units in which the park is divided. This analysis allowed to determine 2 Total Qualities of Landscape, that have been mapped using aerial photography equipment and materials and SIG, with field control. This investigation is developed within the Project of Investigation Geology of the Neogeno and Cuaternario of the Mountain range of San Luis, Faculty of Sciences Physical, Mathematics and Natural - National University of San Luis, Argentina. (author)

  5. 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.

  6. 3D gravity modeling of the Corrientes province (NE Argentina) and its importance to the Guarani Aquifer System

    Science.gov (United States)

    Mira, Andrés; Gómez Dacal, María Laura; Tocho, Claudia; Vives, Luis

    2013-11-01

    This paper presents a geological model of Corrientes province (Argentina) based on Bouguer gravity anomaly data, obtained in 2073 measurement points. To build the model, the IGMAS + interactive program was used. Two areas of approximately 135,000 km2 were modeled in this study. The selection of these areas was based on the sectors where the largest number of gravity anomaly measurements was made and other type of data was available to perform the parameterization (i.e, lithology profiles in boreholes, seismic profiles and audio-magnetotelluric AMT soundings). The initial geological configuration proposed was composed by four layers: basement, sediments (Paleozoic-Lower Cretaceous), basalts (Serra Geral Group, Lower Cretaceous) and post-basaltic sediments. The result shows a basement compartmentalized in structural blocks separated by large faults. The connection of Asunción and Río Grande Arches is confirmed along a structural high that crosses Corrientes province from SE to NW. The basaltic layer shows lateral changes in its thickness, due to faulting, almost disappearing on the NW of Corrientes. This structural configuration has a special hydrogeological importance because it produces the rise of the Guaraní Aquifer System sedimentary series near the surface and the intense fracture network makes this area prone to local recharge and regional discharge.

  7. Uranium deposit types and resources of Argentina

    International Nuclear Information System (INIS)

    Lopez, L.; Cuney, M.

    2014-01-01

    The uranium-related activities in Argentina begun in the 1950s and, as a result of the systematic exploration, several types of deposits have been discovered since then: volcanic and caldera-related, sandstone-hosted, vein spatially related to granite (intragranitic and perigranitic) and surficial. The deposits that have been the focus of the most important uranium exploitations are the ones that belong to the volcaniclastic type. These are localized in Permian formations associated with synsedimentary acid volcanism in the Sierra Pintada district (Mendoza province). The volcanic and caldera related type is also present in the Laguna Colorada deposit (Chubut province) located in the San Jorge basin (Cretaceous). Several important uranium mineralisations have been identified in Cretaceous fluvial sandstones and conglomerates, among which the most relevant is the Cerro Solo deposit (Chubut province) that corresponds to the paleochannel structure subtype. Other subtypes of sandstone model have been studied. For instance, the Don Otto deposit (Salta province), located in the Salta Group Basin (Cretaceous - Tertiary), belongs to the tabular U-V subtype. The roll front subtype can be also found in the Los Mogotes Colorados deposit (La Rioja province) which is hosted by Carboniferous continental sandstones. The uranium mineralisations in veins and disseminated episyenites within peraluminous leucogranites of the Sierras Pampeanas (Cordoba and San Luis provinces) represent other types of existing deposits. These granites are Devonian – Carboniferous and the related deposits are comparable to those from the Middle European Variscan. There are also other vein-type uranium deposits located in metamorphic basement in the periphery of high potassium calcalkaline granites (Sierras Pampeanas of Catamarca and La Rioja provinces), where the mineralisation control is mainly structural. The current uranium identified resources of the country are approximately 24,000 tU in the

  8. Calidad de aguas y análisis de la contaminación en el Río Tunuyán Superior (Mendoza, Argentina en el periodo 2007-2014

    Directory of Open Access Journals (Sweden)

    Santa Esmeralda Salatino

    2017-05-01

    Full Text Available Desde agosto de 2007 a la fecha, se ha venido conformando una base de datos de calidad físico-química-microbiológica del agua de riego del río Tunuyán superior, uno de los más importantes de Mendoza. Se seleccionaron seis sitios de muestreo, de lectura mensual, estratégicamente ubicados. Tres sitios pertenecientes al río: Valle de Uco (VU, Costa Anzorena (CA y Dique Tiburcio Benegas (TB y otros tres a sus afluentes principales: río Las Tunas (LT y arroyos Aguanda (A y Yaucha (Y. Son objetivos del trabajo: (1 poner a disposición de los interesados la base de datos de registros mensuales de parámetros medidos; (2 caracterizar al agua de la cuenca; (3 identificar las fuentes de contaminación de mayor impacto; (4 comparar la evolución temporal y espacial de la contaminación y (5 aportar a la elaboración de pautas de gestión transferibles a la administración del recurso hídrico. El trabajo presenta la variación espacial y temporal de los diferentes parámetros analizados los que fueron sometidos a un análisis estadístico no paramétrico (Kruskal Wallis. Se observa que la salinidad del agua expresada como conductividad eléctrica arrojó valores bajos en los sitios: LT, A y Y y bastante más altos en: VU, CA y TB, pudiendo comprobarse además una tendencia creciente en dichos sitios. Los valores de salinidad más elevados se encuentran en TB (1.414 µS.cm-1, seguidos por CA (1.368 µS.cm-1 y VU (1.238 µS.cm-1. En estos tres sitios, los valores de la Relación Adsorción de Sodio (RAS fueron también los más altos.  Con respecto al contenido de Coliformes fecales los sitios CA y TB superaron los valores máximos establecidos porla Resolución 778/96 del Departamento General de Irrigación. Respecto a la evolución temporal los únicos parámetros que han presentado diferencias significativas (α<0,05 son la Demanda Química de Oxigeno, el Oxígeno Disuelto y Coliformes fecales.

  9. Municipal waste management and groundwater contamination processes in Córdoba Province, Argentina

    Directory of Open Access Journals (Sweden)

    Daniel Emilio Martínez

    2010-12-01

    Full Text Available In Coronel Moldes, Argentina, waste management practices consist in municipal waste being tipped directly onto an area of sand dunes at the municipal waste disposal site (MWDS. Moreover, untreated liquid waste from septic tanks and latrines from urban areas are discharged in the same place. This co-disposal waste management is very common in many regions of Argentina and its impact on the groundwater of Coronel Moldes has not been evaluated. The study area is located in the vicinity of a MWDS in a flatlands environment that is typical of Argentina. The main objective of this study was to evaluate the impacts on groundwater quality of current waste management practices in order to consider the requirement for new guidelines for sustainable groundwater management. Three groundwater monitoring wells were installed up-, across- and down-gradient of the MWDS. The principal aquifer is formed by sandy silt sediments (loess. Groundwater levels in the area of the MWDS are between 5.6 m and 7.8 m. The Vulnerability index indicates that groundwater in this area has a high vulnerability. Groundwater in the vicinity of the MWDS shows elevated electrical conductivity, high concentrations of Cl-, Na+, and HCO3- ions, COD, BOD5 and aerobic bacteria and less dissolved oxygen than the background values indicating the presence of organic matter. Municipal waste management represents a significant omission in current groundwater protection policy at Coronel Moldes. Strict supervision of solid and liquid municipal waste disposal needs to be instigated in order to ensure that the groundwater remains free of contamination and to allow a sustainable environmental management.

  10. Becoming "Neuquino" in Mapuzugun: Teaching Mapuche Language and Culture in the Province of Neuquen, Argentina

    Science.gov (United States)

    Szulc, Andrea

    2009-01-01

    This article explores the sense of belonging promoted by the current program of Educacion Intercultural Bilingue (EIB) of the province of Neuquen for Mapuche children, examining the design and implementation of this program. The analysis reveals how this program reinforces a hegemonic definition of Mapuche identity, which relegates Mapuche culture…

  11. Pennsylvanian and Cisuralian palynofloras from the Los Sauces area, La Rioja Province, Argentina: Chronological and paleoecological significance

    Energy Technology Data Exchange (ETDEWEB)

    Pasquo, Mercedes di; Azcuy, Carlos L. [University/Organization, CONICET Institute CICyTTP, CICyTTP- CONICET Diamante - CP, Entre Rios (Argentina); Vergel, Maria del M. [INSUGEO-CONICET y Universidad Nacional de Tucuman, Facultad de Ciencias Naturales e Instituto Miguel Lillo, Miguel Lillo 205, San Miguel de Tucuman (Argentina)

    2010-08-01

    Three outcrops of the Libertad and Sauces Formations from the Los Sauces area La Rioja Province, western Argentina, yielded the nine palynoassemblages studied here. Two assemblage zones are defined on the basis of the stratigraphic distribution and ranges of seventy five species of palynomorphs (42 species of spores, 32 pollen taxa and one fungus). Only thirteen species are common to both assemblages and ten species are first records for the Paganzo Basin. Assemblage 1 from the Libertad Formation is dominated by trilete spores of Cristatisporites (lycophyte) and Punctatisporites (pteridophyte). Monosaccate pollen (Coniferales/Cordaitales) is frequently present. Pteridosperms, mostly represented by Cyclogranisporites, are especially abundant in one level together with scarce striate bisaccate pollen grains. Assemblage 2 of the Sauces Formation is dominated by trilete spores related to the Pteridophyta (e.g., Horriditriletes, Converrucosisporites, Granulatisporites) and Sphenophyta. Monosaccate (Cordaitales/Coniferales) and taeniate and non-taeniate bisaccate pollen grains (Pteridospermales/Coniferales), are equally subordinated. Monosulcate pollen (Cycadophyta) and fungi (Portalites gondwanensis) are rare. Assemblage 1 is mainly Moscovian; assemblage 2 Asselian-Sakmarian. This interpretation is based on correlation of assemblage 1 to the DMb (Mid Pennsylvanian) and assemblage 2 to the FS (Early Cisuralian) Biozones of the Paganzo Basin (Argentina). The taxonomic composition of the Ahrensisporites cristatus-Crucisaccites monoletus (Mid-Late Pennsylvanian) and the Protohaploxypinus goraiensis Subzone (Asselian-Sakmarian) of the Vittatina costabilis (Early Cisuralian) Biozones of the Parana Basin (Brazil) support this correlation. The continental freshwater depositional setting of this part of the Paganzo Basin is supported by the dominance of terrestrial palynomorphs and phytoclasts, the presence of coal and carbonaceous shales, and the occurrence of plant megafossils

  12. Mammalia, Chiroptera, Molossidae, Molossops temminckii (Burmeister, 1854, and Vespertilionidae, Eptesicus furinalis (dOrbigny and Gervais, 1847: New locality record and distribution extension in Cordoba Province, Argentina

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    Castilla, M. C.

    2010-01-01

    Full Text Available During a field trip to the Ramsar site “Bañados del Río Dulce y Laguna Mar Chiquita” we captured three specimensof Molossops temminckii (Burmeister, 1854 and two of Eptesicus furinalis (d’Orbigny and Gervais, 1847. Molossopstemminckii has a wide distribution in Argentina, but this new record represents the second mention of the species for theCordoba Province after 13 years. The specimens of E. furinalis represent the tenth record for Cordoba and the second for RíoPrimero Department. This new information reflects the scarcity of systematic studies on bats in Cordoba Province.

  13. Gastronomía y turismo en Argentina. Polo gastronómico Tomás Jofré

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    Schlüter, Regina G.

    2008-04-01

    Full Text Available Culinary Tourism in Argentina. The Case of Tomás Jofré. The importance of culinary tourism is growing steadily both in developing and industrialized societies. Argentina has a long tradition regarding this kind of tourism, mainly wine tourism, reflected in the National Wine Festival held since 1936 en the province of Mendoza. By the end of the 20th century culinary tourism was brought into the national tourism plan and it was the start for the private sector to develop own initiatives in order to develop small towns into culinary attractions for visitors. This article presents the results of a study undertaken in order to get acquainted with the visitor profile and motivations for visitors to Tomás Jofré during Sun-days.

  14. Políticas públicas para la fruticultura en Argentina, 1930-1943 Public Policies for the Fruit Growing in Argentina, 1930-1943

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    María Silvia Ospital

    2013-04-01

    Full Text Available El cierre de los mercados internacionales para la producción agraria argentina, consecuencia de la crisis internacional de 1929, obligó al Estado a implantar una serie de medidas alternativas regulatorias de la producción y mercado internistas. Estas prácticas políticas fueron acompañadas por campañas publicitarias que apuntaban a identificar consumo de productos nacionales con una nueva versión del patriotismo. Este artículo se propone realizar algunos aportes sobre esa cuestión, centrándose en las formas en que el Estado nacional -a través del Ministerio de Agricultura- y la dirigencia política y empresarial de la provincia de Mendoza elaboraron la imagen de la Argentina frutícola, productora de uvas de mesa, naranjas y manzanas para el consumo interno, a la vez que la promovían proyectándola como un novedoso renglón de las exportaciones argentinas.The closing of international markets for Argentine agrarian production forced the Government to implement a series of alternative measures such as production and commerce public regulations, bilateral treaties and the rediscovery of possibilities of the domestic market for national products. Those political measures were supplemented by a variety of advertising campaigns aimed at identifying the consumption of domestic products with a new way of patriotism. This paper aims to make contributions to this matter, focusing in the ways in which both the national government -through its agriculture ministry- and the political and corporate leaderships in the province of Mendoza composed the image of Argentina as an important producer of grapes, oranges and apples, while at the same time they stimulated fruit as a new source of the country international commerce.

  15. Bionomics of Aedes aegypti subpopulations (Diptera: Culicidae) from Misiones Province, northeastern Argentina.

    Science.gov (United States)

    Tejerina, Edmundo Fabricio; Almeida, Francisco Felipe Ludueña; Almirón, Walter Ricardo

    2009-01-01

    Life statistics of four Aedes aegypti subpopulations from the subtropical province of Misiones were studied during autumn and winter, under semi-natural conditions, coming from the localities of Posadas (SW), San Javier (SE), Bernardo de Irigoyen (NE) and Puerto Libertad (NW). The eastern subpopulations are geographically separated by the central mountain system of the province from the western subpopulations. High percentages of larval and pupal survival (97-100%) were recorded, and no significant differences were detected among the four subpopulations. Larvae and pupae lasted approximately 8 days to complete their development, no significant differences being detected among the four subpopulations studied. Sex ratio recorded did not differ significantly from 1:1. Male longevity did not show difference among the different subpopulations, but female longevity was remarkably different among the four subpopulations (F=16.27; d.f.=(3;8); P=0.0009), ranging among 11.45 days for San Javier and 57.87 days for Posadas. Fecundity also varied considerably among subpopulations, the greatest number (307.44 eggs/female) being recorded for Posadas (F=4.13; d.f.=(3;8); P=0.04). Ae. aegypti females of the western subpopulations lived longer than the eastern subpopulations studied, therefore, the risk of dengue outbreak would be greater on the Misiones Province border with Paraguay.

  16. 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.

  17. Geology and petrography of the Socoscora Sierra . Province of San Luis. Republica Argentina

    International Nuclear Information System (INIS)

    Carugno Duran, A.

    1998-01-01

    The following paper include an study geological and petrographic of the Sierra de Socoscora. San Luis, Argentina. This mountainas is a block with less elevation that the Sierra de San Luis, and it located in the west center of it. It' s formed by an crystalline basement composed by metamorphic haigh grade rocks, with a penetrative foliation of strike N-S. in this context is possible to define petrographicly the following units, migmatitic that fill a big part of the mountain, amphibolites, marbles, skarns, milonites and pegmatites. This units have amphibolitic facies assemblanges mineral and in some them, we can observe retrograde metamorphism of the greesnschist facies. The metamorphic structure is complex and evidence at least three deformation event

  18. Aquatic Coleoptera from Mburucuyá National Park (Corrientes Province, Argentina

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    Patricia L. M. TORRES

    2012-01-01

    Full Text Available Se presenta una lista de las especies de coleópteros acuáticos colectadas en el Parque Nacional Mburucuyá. Se identificaron 128 especies, incluidas en 44 géneros y siete familias. Diez especies se citan por primera vez para la Argentina: Agaporomorphus mecolobus Miller y Bidessonotus obtusatus Régimbart (Dytiscidae; Mesonoterus laevicollis Sharp, Suphisellus hyeroglyphicus Zimmermann, S. rufulus Zimmermann, S. sexnotatus (Régimbart y Notomicrus traili Sharp (Noteridae; Berosus pluripunctatus Mouchamps, Enochrus guarani Fernández y Helobata corumbaensis Fernández & Bachmann (Hydrophilidae. Dos familias (Scirtidae y Spercheidae, 12 géneros y 69 especies son citados por primera vez para la provincia de Corrientes.

  19. Mineralogy of auriferous deposits of the quaternary deposits in the San Luis Province, Argentina

    International Nuclear Information System (INIS)

    Karlsson, A.; Ayala, R. . E mail: Karlsson@arnet.com.ar

    2004-01-01

    The objective of this work is to study the mineralogy of the sands and clays of the quaternary deposits in the San Luis Mountain, Argentina. A series of algorithms applied to the sand fraction has permitted to determine sedimentary discontinuities. The two micron fraction of the sediments has been studied by a quantification technique based on X-ray diffraction by means of oriented preparations and run with copper tube. These quaternary silts have received fluvial lateral contributions. The high cristalinidad of non expandibles and fireclay clay show the antique of the silts. The polygenic processes have generated a great variety of clay mineral species like a large quantities of illite and in lesser extend kaolinite and smectites. The illite was probably generated by diagenetic changes. The high cristalinidad of non expandibles and fireclay clay show the antique of the silts [es

  20. Within plate seismicity analysis in the segment between the high Cordillera and the Precordillera of northern Mendoza (Southern Central Andes

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    Julián Olivar

    2018-01-01

    Full Text Available Crustal seismicity in northwestern Mendoza Province in Argentina, corresponding to the transition zone between the Chilean-Pampean flat subduction zone (26.5–33.5°S and the Southern Central Andes normal subduction zone to the south, is studied in order to i identify its relationship with the mapped structure, ii determine deformational mechanisms and iii constrain the geometry of the fold and thrust belt in the lower crust. Through this, we aim to determine which are the structures that contribute to Andean construction, east of the Frontal Cordillera in Argentina and at the western Principal Cordillera in Chile. Data from a temporary local seismic network are reprocessed in order to achieve a precise location of hypocenters and, whenever possible, to build focal mechanisms. Results are interpreted and compared with previous seismic studies and structural models. Analyzed seismicity is grouped around the eastern front of Frontal Cordillera, with hypocenters mainly at depths of 25–40 km. Contrastingly, earthquakes in the Principal Cordillera to the west are located at the axial Andean sector and Chilean slope, with depths shallower than 15 km. Obtained focal mechanisms indicate mainly strike-slip displacements, left lateral at Frontal Cordillera and right lateral at Principal Cordillera. Based on these observations, new possible structural models are proposed, where seismogenic sources could be either associated with inherited basement structures from the Cuyania-Chilenia suture; or correspond to deep-blind thrusts linked with a deeper-than-previously-assumed decollement that could be shared between Frontal Cordillera and western Precordillera. This deeper decollement would coincide in turn with the one determined from receiver function analysis for the eastern Sierras Pampeanas in previous works, potentially implying a common decollement all through the fold and thrust belt configuration. Apart from this, a new interpretation of

  1. Geochemistry of uranium in ground waters of the Conlara river Valley, San Luis and Cordoba provinces (Argentina)

    International Nuclear Information System (INIS)

    Nicolli, H.B.; Gamba, M.A.

    1979-01-01

    Geochemical characteristics of ground waters related with lixiviation, transport and precipitation of uranium in the Conlara river valley (provinces of San Luis and Cordoba (Argentina)) are studied. Anions and cations' distributions, together with hardness, specific conductivity, pH, Eh, and uranium and vanadium contents, have been studied. Those parameters characterize four hidrogeochemical facies along an E-W profile: a calcic strong bicarbonate facies, an alkaline-calcic bicarbonate facies, an alkaline sulfate facies, and a strong alkaline sulfate facies. An ''Interphase zone'' (transition from bicarbonate water to sulfate water), where changes in composition may define a geochemical environment capable of UO2 precipitation, has been determined. The chemical-Thermodynamic studies give a dominance of UDC and UTC complexs ions (even in sulfate waters), so they represent the 99% of present ions. Besides, the calculated values required for equilibrium with uraninite or carnotite resulted much greater than those obtained in the performed experiments. It means that the precipitation of those minerals requires either the presence of greate amounts of uranium or vanadium, or a reducing environment with Eh values smaller than the observed ones. Finally, the steps to be taken in future investigations are suggested in view to a drilling plan where: 1) Priority to the ''Interphase zone'' areas is given. 2) The deepest aquifers in Tertiary sediments of the basin have to be reached in order to get the convenient environmental conditions (i.e. smallest Eh values) for uranium or uranium-vanadium precipitation. (author) [es

  2. Groundwater contamination with arsenic and other trace elements in an area of the Pampa, province of Cordoba, Argentina

    International Nuclear Information System (INIS)

    Nicolli, H.B.; Suriano, J.M.; Gomez Peral, M.A.; Ferpozzi, L.H.; Baleani, O.A.

    1989-01-01

    A geochemical study of the groundwater of the pampa in the province of Cordoba, Argentina, is reported. Physical-chemical parameters, dissolved solids, and seven trace elements were determined in 60 selected water samples. Systematic and accurate measurements of arsenic, fluorine, and vanadium were performed for the first time. The geographic distribution of the seven trace elements was mapped and its correlation with the anion-cation composition of the water was studied. Eighty-four percent of the water analyzed showed arsenic contents over 0.05 mg/l. The maxima for arsenic, fluorine, vanadium, and uranium contents were found in the western part of the study area, in waters dominated by alkali metal cations. Maximum selenium and antimony contents were found in the eastern part of the areas, whereas molybdenum distribution showed no relationship to the other groups. The movements of the subsoil have disturbed surface and subsurface drainage, thus influencing the water salinity and trace element contents. To investigate the origin of contamination, 54 loess samples were collected at wells in depths ranging from the surface down to the water table. This loess, which has a high proportion of volcanic components, mainly rhyolitic glass, exhibits a chemical composition corresponding to that of a dacite. The loess and volcanic glass show anomalous contents of all contaminant trace elements, mainly arsenic and selenium. For this reason, loess is considered to be the most important source of contamination of this ground water area. 30 refs., 6 figs., 9 tab

  3. Succession of carrion fauna in the arid region of San Juan Province, Argentina and its forensic relevance.

    Science.gov (United States)

    Aballay, F H; Murua, A F; Acosta, J C; Centeno, N D

    2012-02-01

    The succession of carrion fauna and the decomposition stages were studied in the arid environment of San Juan Province, Argentina (31°32'34.7″ S; 68°34'39.4″ W). Two pig carcasses (Sus scrofa) were placed in wire mesh cages, 100 m apart from each other. Each carcass was surrounded by pitfall traps, and a modified Malaise trap was placed above. Daily samplings were carried out to collect the insects present in the carcasses and the traps, and body and environmental temperature were measured. The main colonizer species was Chrysomya albiceps (Wiedemann) and its larvae were dominant over other Diptera. The first adult blowflies emerged at 8.9 days. The time to reach the remains stage was 8 days shorter than for other South American sites. We recorded the early arrival of adult Dermestes maculates De Geer and Dermestes ater De Geer 2 days after the beginning of the assay, and larvae of these species were recorded 4 days after. We determined a 1.5-day error in the postmortem interval estimation using the temperatures measured in the assay and those recorded by the nearest meteorological station.

  4. Physical parameters and organoleptic characteristics of propolis from the province of Misiones, Argentina

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    Sosa-López Ángela Antonia

    2017-05-01

    Full Text Available The propolises are complex resinous substances of nature origin, source whose characteristics confer him antibiotic proprieties and multiples applications. It was raised the propolis study of three locations of Misiones province, in order to determine the color, smell, taste and appearance organoleptic characteristics, ash percentage, waxes and impurities and microscopic characterization of such propolis. Various methods are applied to achieve, obtaining the organoleptic characterization of color, smell, taste and appearance, ash percentage, waxes and impurities differ according to place of origin, in both the microscopic characterization propolis also they showed different results according to the liquid used as a vehicle for suspension.

  5. Epidemiologic study of bronchopulmonary mycosis in the province of cordoba, argentina

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    Diana T. Masih

    1987-02-01

    Full Text Available An epidemiological study for histoplasmosis coccidioidomycosis and cryptococcosis made in five areas of the province of Córdoba is presented. The data obtained showed a global positivity of 41.1% for histoplasmin 26.7% for coccidioidin and 14.1% for cryptococcin. In some areas, the Rio III basin and Traslasierra, the histoplasmosis infection indexes were much higher, 53,3% and 73.1% respectively. The index of positive skin tests with Cryptococcus antigen in Traslasierra was also very high: 31.9%.

  6. Holocene compression in the Acequión valley (Andes Precordillera, San Juan province, Argentina): Geomorphic, tectonic, and paleoseismic evidence

    Science.gov (United States)

    Audemard, M.; Franck, A.; Perucca, L.; Laura, P.; Pantano, Ana; Avila, Carlos R.; Onorato, M. Romina; Vargas, Horacio N.; Alvarado, Patricia; Viete, Hewart

    2016-04-01

    The Matagusanos-Maradona-Acequión Valley sits within the Andes Precordillera fold-thrust belt of western Argentina. It is an elongated topographic depression bounded by the roughly N-S trending Precordillera Central and Oriental in the San Juan Province. Moreover, it is not a piggy-back basin as we could have expected between two ranges belonging to a fold-thrust belt, but a very active tectonic corridor coinciding with a thick-skinned triangular zone, squeezed between two different tectonic domains. The two domains converge, where the Precordillera Oriental has been incorporated to the Sierras Pampeanas province, becoming the western leading edge of the west-verging broken foreland Sierras Pampeanas domain. This latter province has been in turn incorporated into the active deformation framework of the Andes back-arc at these latitudes as a result of enhanced coupling between the converging plates due to the subduction of the Juan Fernández ridge that flattens the Nazca slab under the South American continent. This study focuses on the neotectonics of the southern tip of this N-S elongated depression, known as Acequión (from the homonym river that crosses the area), between the Del Agua and Los Pozos rivers. This depression dies out against the transversely oriented Precordillera Sur, which exhibits a similar tectonic style as Precordillera Occidental and Central (east-verging fold-thrust belt). This contribution brings supporting evidence of the ongoing deformation during the Late Pleistocene and Holocene of the triangular zone bounded between the two leading and converging edges of Precordillera Central and Oriental thrust fronts, recorded in a multi-episodic lake sequence of the Acequión and Nikes rivers. The herein gathered evidence comprise Late Pleistocene-Holocene landforms of active thrusting, fault kinematics (micro-tectonic) data and outcrop-scale (meso-tectonic) faulting and folding of recent lake and alluvial sequences. In addition, seismically

  7. Public environmental expenditure in the province of Buenos Aires, Argentina (1997-2012

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    Verónica L. Cáceres

    2014-11-01

    Full Text Available The article contributes to the discussion on public environmental issues in the province of Buenos Aires; in particular, it focuses on the analysis of public environmental expenditure during 1997-2012. It considers the estimation of expenditure, identifying the actors who execute and implement programs that allow you to have a reference to the relevance of the issue tacked by the provincial agenda. The work was done from the budgetary information produced by the General accounting of BAP, which is dependant of the Ministry of Finance, through classifiers used by the province. Firstly it presents the estimation and evolution of environmental expense according to the provincial classification, then it widens with the Classification of Environmental Protection Activities (CEPA 2000. Secondly it characterizes state actors that implement environmental expense and the financed program types. Finally it is presented some preliminary conclusions. The central input refers that environmental public expenses, later in one decade of increase after politic, social and economic crisis in 2001, does not achieve the convertibility participation levels. Also it emphasizes in the water and sanitation engineering; it has a strong component of participation of centralized agencies in detriment of those that agglutinates the main environmental functions; it is not observed instances of civil society participation in execution; and it adjudge a low relevance to the promotion and education activities in environmental matters.

  8. Cerezo: desarrollo de un cultivo no tradicional en Argentina

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    Scarpati, Olga

    2011-12-01

    Full Text Available The incorporation of non-traditional crops for Argentine Republic became notable in the late XX century and early XXI by technological innovations that allow very significant yields, the opportunity represented by the exportation of agricultural products, as is the case of cherry, favoured by the exchange rate, and against seasonality of production for consumer markets in the Northern Hemisphere. The main cherry-growing areas are three: the Uco Valley in Mendoza province, the Los Antiguos Valley in the province of Santa Cruz and the Lower Valley of the Chubut River (VIRCH in the province of same name, which met the requirements for achieving good crop yields. The main destination of this nectarine is in addition to domestic consumption, exports to the US and the European Union (EU, representing an important trade surplus for producing areas.

    La incorporación de cultivos que no son tradicionales para la República Argentina se hizo notable a fines del siglo XX y principios del XXI por las innovaciones tecnológicas que permiten rindes muy significativos, la oportunidad que representa la exportación de algunos productos agropecuarios como es el caso de la cereza favorecidos por el tipo de cambio, y la contraestacionalidad de la producción, respecto de los mercados consumidores del hemisferio norte. Las principales zonas de cultivo de cerezo son tres: el Valle de Uco en la provincia de Mendoza, el Valle Los Antiguos en la provincia de Santa Cruz y el Valle inferior del río Chubut (VIRCH, en la provincia homónima; las cuales cumplen con los requisitos para lograr buenas producciones del cultivo. El principal destino de esta fruta es además del consumo interno, la exportación a EEUU y la Unión Europea (UE, representando un saldo comercial importante para las zonas productoras.

  9. Epidemiología de la enfermedad de Chagas, Departamento General Paz, Argentina Chagas' disease epidemiology in the province of General Paz, Argentina

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    Elena B Oscherov

    2003-02-01

    carried out in the province of General Paz, Corrientes, Argentina. Human dwellings and peridomestic ecotopes were randomly selected. Triatomines were collected using the man/hour/capture method. The insects were taxonomically determined and classified by age and sex. Trypanosoma cruzi infection was detected through direct microscopy of feces and polymerase chain reaction (PCR. Diagnosis of Chagas infection in volunteer residents was performed using indirect hemagglutination (IHA and immunoenzimatic assay (ELISA . Infestation, density, colonization, natural infection and dispersion indexes were recorded. RESULTS; A total of 42 households and 50 peridomestic areas were examined. Triatoma infestans domestic infestation and infection indexes were 23.8 and 19.4; respectively. Density, colonization and dispersion indexes were 2.1; 47.0 and 50.0; respectively. Of all, 5.9% of peridomiciles were infested by T. infestans and 11.8% by Triatoma sordida. Trypanosoma cruzi infection was observed in 2.0% of T. sordida. The seroprevalence rate obtained from 85 human sera analyzed was 22.3%. CONCLUSIONS: The results suggest a halt in T. cruzi transmission in the study area. Nevertheless the presence of seroreactive individuals and infected T. infestans vectors might facilitate the resurgence of the transmission cycle. Control actions with the use of insecticides might be considered in order to eliminate vector populations.

  10. Human Rights in the Training of Teachers. Paradigmatic Femicides in the Province of La Pampa, Argentina

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    Silvia Siderac

    2017-09-01

    Full Text Available This article gives an account of the experiment carried out on the basis of the photographic exhibition “The violence in focus. Three paradigmatic femicides in La Pampa" that was carried out in the interior of the educational community of the Faculty of Sciences at the National University of La Pampa (UNLPam, together with the feminist organization "Women for Solidarity" in the framework of a cultural program of the Ministry of Culture and Extension of the UNLPam. The people who took part in this activity were teachers of the Faculty of Sciences and students from various undergraduate courses. The objectives of the sample were to build an educational space in relation with human rights, to make visible the three femicides of Pampa society, to work in a collaborative manner by bringing together social actors of the university and the community, and to make this experience an instance for pedagogical training. A qualitative-designed methodology was implemented, and by means of pictures, university students from undergraduate courses worked with the theoretical categories of gender violence and different types of gender violence, compromise, and femicide; they worked in conjunction with high school students. The objective of this work was to carry out an experience that would integrate the university functions of teaching, research and extension on the basis of a so sensitive social issue such as the femicides in Argentina.

  11. Redescripción y consideraciones biogeográfcas de dos especies de Scotobius (Coleoptera: Tenebrionidae de ambientes montanos del centro de Argentina y Chile Redescription and biogeographic considerations of two species of Scotobius (Coleoptera: Tenebrionidae from mountain environments of central Argentina and Chile

    Directory of Open Access Journals (Sweden)

    Violeta A. Silvestro

    2012-12-01

    Full Text Available El género neotropical Scotobius Germar (Tenebrioninae: Scotobiini comprende 61 especies distribuidas desde el centro de Perú y sur de Brasil hasta el sur de Argentina y Chile. En este trabajo, revisamos dos especies de Scotobius que habitan el oeste de las provincias de San Juan, Mendoza y Neuquén (Argentina y en Chile central, a lo largo de la Cordillera de los Andes y las montañas extra-andinas en Argentina: S. punctatus Eschscholtz, 1831 y S. andrassyi Kaszab, 1969. Se proveen redescripciones utilizando nuevos caracteres morfológicos y se proporcionan fotografías de los adultos y de los pronotos. Se consigna la distribución geográfica, rangos altitudinales y las provincias biogeográficas en las que habitan estas especies. Se utiliza un modelo predictivo de distribución de especies para proponer hipótesis sobre los factores que influencian la distribución espacial y que explicarían la alopatría de ambas especies.The Neotropical genus Scotobius Germar (Tenebrioninae: Scotobiini comprises 61 species distributed from central Peru and southern Brazil to southern Argentine and Chile. In this contribution two species of Scotobius: S. punctatus Eschscholtz, 1831 and S. andrassyi Kaszab, 1969, that inhabit in western San Juan, Mendoza, and Neuquén provinces (Argentina and in central Chile, along the “Cordillera de los Andes” and extra-Andean mountains in Argentina, are revised. Redescriptions using new morphological data and photographs of habitus and pronota are provided. This article informs about the geographic distribution, altitudinal ranges and the biogeographic provinces that these species inhabit. A predictive model of species distribution is presented to propose hypothesis about the factors that influence the space distribution and the allopatry of these two species.

  12. Lichens as possible agents of sandstone deterioration in Jesuitic ruins of San Ignacio Miní (Misiones Province, Argentina

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    Rosato, V. G.

    2010-09-01

    Full Text Available The ruins of San Ignacio Miní, in NE Argentina, Misiones Province, included by the UNESCO in the list of World Heritage in 1984, were built in the 18th century by the Guarani people under the supervision of the Jesuite Congregation. The ruins are located in a tropical weather zone, exposed to extreme conditions of heat and humidity affecting the rocks used in its construction. These rocks are identified as siliceous sandstones, mainly formed by rounded to subrounded clasts, with scarce angulose particles, containing 96% quartz. Weather characteristics encourage the growth of vascular plants as well as algae and mosses and other organisms that damage materials. Among these, there are 18 lichen species (belonging to 18 genera, 8 foliose, 3 fruticose and 7 crustose. The damaging action of these lichens has been observed through SEM observations and EDAX microanalysis of rock samples colonized by Caloplaca sp. and Buellia sp.

    Incluidas en la lista de Patrimonio Mundial por la UNESCO, las ruinas de San Ignacio Miní, en el NE de Argentina, provincia de Misiones, fueron construidas en el siglo XVIII por pobladores guaraníes supervisados por la Compañía de Jesús. Las ruinas se encuentran en una zona de clima tropical, expuestas a condiciones extremas de calor y humedad que alteran a las rocas empleadas en su construcción. Estas rocas se identifican como areniscas silíceas, formadas por clastos redondeados a sub-redondeados, con escasas partículas angulosas, con un contenido de 96,0% cuarzo. Las características del clima favorecen el desarrollo tanto de plantas vasculares como también de musgos, algas y otros organismos capaces de dañar a los materiales. Entre éstos se incluyen 18 especies de líquenes (pertenecientes a 18 géneros, 8 foliosos, 3 fruticosos y 7 crustosos. Las observaciones con SEM y los microanálisis EDE de muestras de roca colonizadas por Caloplaca sp. y Buellia sp sugieren que estos líquenes ejercen una acci

  13. El nivel educativo y socioeconómico del hogar y habilidades pre-lectoras en escuelas urbano y urbano-marginales de la provincia de Mendoza-Argentina

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    Yanina Canales, Jara

    2016-05-01

    Full Text Available En Argentina, las dificultades en la adquisición de la lectura se originan en diferencias lingüísticas asociadas al nivel sociocultural donde se desarrollan los niños. El objetivo de este artículo es analizar, en escolares de 4 y 5 años, la relación entre el nivel educativo y socioeconómico del hogar con habilidades lingüísticas precursoras de la lectura. Esta es una investigación de carácter cuantitativo y de profundidad comparativa. Se evaluaron 120 niños y niñas de salas de 4 y 5 años de Jardín de Infantes de escuelas urbanas (n= 60 y urbano-marginales (n= 60. El nivel socioeconómico del hogar y educativo de los padres se calculó a partir de datos de los registros escolares. En los niños y niñas se evaluó el nivel de vocabulario, conocimiento del nombre y sonido de la letra y conciencia fonológica. Se observó un efecto significativo de la zona sobre el nivel educativo de los padres y el socioeconómico. Se obtuvieron correlaciones positivas del nivel socioeconómico y educativo con el conocimiento del nombre y sonido de la letra. Ambas variables contextuales explicaron parte de la varianza en el conocimiento del nombre y sonido de las letras en niños y niñas de 4 años únicamente: 6% y 13% respectivamente. Los resultados sugieren que las variables contextuales influyen en el conocimiento alfabético pre-escolar que presentan los niños y las niñas y que la intervención pedagógica recibida en la escuela promueve el desarrollo de habilidades lingüísticas. Frente a contextos socioeconómicos heterogéneos, la educación escolar es una variable protectora que regula las desigualdades de orden social promoviendo el desarrollo de habilidades lingüísticas precursoras de la lectura al inicio de la escolaridad.

  14. The volcanic acidification of glacial Lake Caviahue, Province of Neuquen, Argentina

    Science.gov (United States)

    Varekamp, Johan C.

    2008-12-01

    Lake Caviahue (northern Patagonia, Argentina) is a large glacial lake acidified by volcanic fluids from Copahue volcano. The lake and the feeding rivers were sampled annually from 1997 till early 2006, including the eruptive period of 2000. Lake Caviahue waters evolved over time, with the most concentrated waters in 2000 during the eruptive period, followed by gradual dilution that was interrupted by renewed acidification in 2003-2004. Inversion of the lake water data and application of a dynamic non-steady state model for the lake provides our best quantitative estimates for the variation in element fluxes over the 9-year period. The model flux results agree well with most of the measured fluxes. The Copahue hydrothermal system had gently declining element fluxes between 1997 and mid-1999, although the lake was still becoming more concentrated. About 2-3 months before the 2000 eruption, element fluxes increased strongly, but the hydrothermal fluxes almost shutoff directly after the main eruptive events. The fluxes of several elements recovered post-2001, with an increase in element fluxes in 2003-2004; the lake became more dilute between 2004 and 2006. The intrusion of new magma into the hydrothermal system just prior to the 2000 eruption led to enhanced water rock interaction, with higher concentrations of the rock forming elements in the fluids, and the hot spring flow rate increased as a result of the higher pressure in the reservoir. The fluids became saturated in alunite and jarosite, and they were already saturated with anhydrite. Precipitation of these minerals possibly led to a decreased permeability of the hydrothermal reservoir, leading to the strongly reduced element fluxes just after the eruption. In addition, K, Al and S were retained in the newly precipitated minerals as well, further diminishing their export. The acidification in 2003-2004 may have resulted from a new small intrusion of magma or resulted from seismic activity that created new

  15. The obsidian from Quiron (Salta Province, Argentina): a new reference glass for fission-track dating

    Energy Technology Data Exchange (ETDEWEB)

    Bigazzi, G. [Istituto di Geoscienze e Georisorse, C.N.R., Area della Ricerca di Pisa, V.G. Moruzzi, 1, 56124 Pisa (Italy)]. E-mail: g.bigazzi@igg.cnr.it; Laurenzi, M.A. [Istituto di Geoscienze e Georisorse, C.N.R., Area della Ricerca di Pisa, V.G. Moruzzi, 1, 56124 Pisa (Italy); Viramonte, J.G. [Instituto Geonorte, Universidad Nacional de Salta and Conicet, Buenos Aires 177, 4400 Salta (Argentina)

    2005-12-01

    In the course of a geochronological study of the volcanic activity in the Andean Cordillera in northern Argentina, we have found in the El Quevar volcanic complex (24 deg. 19{sup '}S/66 deg. 43{sup '}W,6180m) a phenocryst poor obsidian (Quiron obsidian) showing an unusually high spontaneous track density. Defects which might produce 'spurious' tracks are virtually absent. Application of fission-track dating using an absolute approach, based on the IRMM-540 standard glass for neutron fluence measurements, yielded an apparent age of 7.27+/-0.29Ma(1{sigma}) and a plateau age of 8.99+/-0.31Ma(1{sigma}). A {sup 40}Ar-{sup 39}Ar isochron age on biotite of 8.61+/-0.04Ma(1{sigma}) was already available for the Quiron rhyolite. We determined further {sup 40}Ar-{sup 39}Ar ages on several chips of the glass itself using two analytical approaches: total fusion with a focussed laser beam (LTFA) and a step-heating approach using a de-focussed laser beam (LSHA). We have obtained a weighted average of 8.77+/-0.09Ma, an isochron age of 8.71+/-0.12Ma and an integrated age of 8.77+/-0.09Ma for LTF analyses, and a w.a. of 8.75+/-0.09Ma, an iso.a. of 8.77+/-0.09Ma and an int.a. of 8.77+/-0.09Ma for LSH analyses (all age errors are 2{sigma}). The Quiron obsidian is very easy to analyse for its high spontaneous track density and because microlites which might produce spurious tracks are very rare. Independent reference {sup 40}Ar-{sup 39}Ar ages determined in different laboratories are available. For these reasons we believe that this glass may be very useful for testing fission-track system calibrations and apparent age correction procedures. Splits of obsidian Quiron will be distributed upon request to colleagues who intend to test it.

  16. Intervention and peasant organization. The case of Copacabana in the province of Cordoba (Argentina

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    Guillermo Ferrer

    2013-12-01

    Full Text Available Most of the researchers who work with rural development subjects agree that the social organizations are essential for the rural population to play a role in their own development. Therefore, the organization is a necessary condition for the rural development, and the problem lies in establishing the correct methodology to promote it. In Copacabana, a rural town in the northern mountainous province of Cordoba, we ask: How does one handle family farmers, tensions between individual strategy, and collective action to solve their problems? We conclude that for campesinos is not easy to allocate the social investments required to develop a long-lasting organization. Campesinos’ wishes to reap the benefits stemming from organization are not enough to actually develop a reliable organization. It is also required an appropriate balance between the individualistic tendencies of their members and their collective needs. To overcome the tensions arising within organizations it is necessary to create a process of constructive participation that allows (a that the whole group becomes committed with the aims originally proposed, but at the same time to be flexible enough to modify and recreate them; and (b to establish a set of rules allowing the access to new members, and transparent mechanisms of social control which are accepted and shared by all members. In many cases this process may be favored by the participation of external social actors

  17. Radiological and hyperfine characterization of soils from the Northeastern region of the Province of Buenos Aires, Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Montes, M. L.; Mercader, R. C.; Taylor, M. A.; Runco, J. [Universidad Nacional de La Plata, Instituto de Fisica La Plata - CONICET, Departamento de Fisica, Facultad de Ciencias Exactas (Argentina); Imbellone, P. [Universidad Nacional de La Plata, Instituto de Geomorfologia y Suelos (Argentina); Rivas, P. C. [Universidad Nacional de La Plata, Instituto de Fisica La Plata - CONICET, Facultad de Ciencias Agrarias y Forestales (Argentina); Desimoni, J., E-mail: desimoni@fisica.unlp.edu.ar [Universidad Nacional de La Plata, Instituto de Fisica La Plata - CONICET, Departamento de Fisica, Facultad de Ciencias Exactas (Argentina)

    2011-11-15

    The activity concentrations of both natural ({sup 238}U and {sup 232}Th chains and {sup 40}K) and anthropogenic ({sup 137}Cs) radionuclides down along the soil profile have been determined in soil samples collected from inland and coastal areas of the La Plata River, located in the Northeastern region of the Province of Buenos Aires, Argentina. These studies were complemented with {sup 57}Fe Moessbauer spectroscopy characterization, pH, texture and organic carbon content measurements. From Moessbauer results, the sample compositions differ from one area to the other. Spectra from both soil samples are dominated by the Fe{sup 3+ } paramagnetic signal. For soil samples from the coastal area, the {alpha}-Fe{sub 2}O{sub 3} contribution is lower, Fe{sub 3}O{sub 4} was not detected, and the relative areas of each spectral contribution are nearly constant with depth. For samples from the inland area, the Fe{sup 3+ } paramagnetic fraction increases up to 82%, mainly at the expense of the magnetically ordered phase. The main observed activity originates from the decay of {sup 40}K (540-750 Bq/kg), followed by {sup 238}U (60-92 Bq/kg) and {sup 232}Th (37-46 Bq/kg) chains. The activity of {sup 235}U was in all the cases lower than the detection limit (L{sub D} = 0.02 Bq/kg). The only determined anthropogenic nuclide was {sup 137}Cs, arising from the fallout of the Southern Hemisphere nuclear weapon tests. Three of the observed differences in the depth distributions can be described by the dispersion-convection model. A correlation between the natural nuclide activities and the Moessbauer relative fractions was found, whereas no correlation was found between the {sup 137}Cs profile and the relative fraction of Fe{sub 3}O{sub 4} or with other iron species.

  18. Radiological and hyperfine characterization of soils from the Northeastern region of the Province of Buenos Aires, Argentina

    Science.gov (United States)

    Montes, M. L.; Mercader, R. C.; Taylor, M. A.; Runco, J.; Imbellone, P.; Rivas, P. C.; Desimoni, J.

    2011-11-01

    The activity concentrations of both natural (238U and 232Th chains and 40K) and anthropogenic (137Cs) radionuclides down along the soil profile have been determined in soil samples collected from inland and coastal areas of the La Plata River, located in the Northeastern region of the Province of Buenos Aires, Argentina. These studies were complemented with 57Fe Mössbauer spectroscopy characterization, pH, texture and organic carbon content measurements. From Mössbauer results, the sample compositions differ from one area to the other. Spectra from both soil samples are dominated by the Fe3+ paramagnetic signal. For soil samples from the coastal area, the α-Fe2O3 contribution is lower, Fe3O4 was not detected, and the relative areas of each spectral contribution are nearly constant with depth. For samples from the inland area, the Fe3+ paramagnetic fraction increases up to 82%, mainly at the expense of the magnetically ordered phase. The main observed activity originates from the decay of 40K (540-750 Bq/kg), followed by 238U (60-92 Bq/kg) and 232Th (37-46 Bq/kg) chains. The activity of 235U was in all the cases lower than the detection limit (LD = 0.02 Bq/kg). The only determined anthropogenic nuclide was 137Cs, arising from the fallout of the Southern Hemisphere nuclear weapon tests. Three of the observed differences in the depth distributions can be described by the dispersion-convection model. A correlation between the natural nuclide activities and the Mössbauer relative fractions was found, whereas no correlation was found between the 137Cs profile and the relative fraction of Fe3O4 or with other iron species.

  19. Analysis of past and future dam formation and failure in the Santa Cruz River (San Juan province, Argentina)

    Science.gov (United States)

    Penna, Ivanna M.; Derron, Marc-Henri; Volpi, Michele; Jaboyedoff, Michel

    2013-03-01

    Around 11.5 ∗ 106 m3 of rock detached from the eastern slope of the Santa Cruz valley (San Juan province, Argentina) in the first fortnight of January 2005. The rockslide-debris avalanche blocked the course, resulting in the development of a lake with maximum length of around 3.5 km. The increase in the inflow rate from 47,000-74,000 m3/d between April and October to 304,000 m3/d between late October and the first fortnight of November, accelerated the growing rate of the lake. On 12 November 2005 the dam failed, releasing 24.6 ∗ 106 m3 of water. The resulting outburst flood caused damages mainly on infrastructure, and affected the facilities of a hydropower dam which was under construction 250 km downstream from the source area. In this work we describe causes and consequences of the natural dam formation and failure, and we dynamically model the 2005 rockslide-debris avalanche with DAN3D. Additionally, as a volume ~ 24 ∗ 106 m3of rocks still remain unstable in the slope, we use the results of the back analysis to forecast the formation of a future natural dam. We analyzed two potential scenarios: a partial slope failure of 6.5 ∗ 106 m3 and a worst case where all the unstable volume remaining in the slope fails. The spreading of those potential events shows that a new blockage of the Santa Cruz River is likely to occur. According to their modeled morphometry and the contributing watershed upstream the blockage area, as the one of 2005, the dams would also be unstable. This study shows the importance of back and forward analysis that can be carried out to obtain critical information for land use planning, hazards mitigation, and emergency management.

  20. Bioacustical and etho-ecological features in amphibian communities of Southern Cordoba province (Argentina

    Directory of Open Access Journals (Sweden)

    Salas, Nancy E.

    1998-01-01

    standardized monitoring practices. In the present work, the most important etho-ecological differences (reproduction habitat, call site, daily and seasonal activity of species that constitute the communities of southern Cordoba Province are indicated, and a classification of advertisement calls is provided. The anuran fauna of the plain area of the southern-central Córdoba Province is represented by 9 species of leptodactylids belonging to 5 genera (Leptodactylus gracilis, L. mystacinus, L. latinasus latinasus, L. ocellatus, Pleurodema tucumanum, Physalaemus biligonigerus, Odontophlynus americanus, Ceratophrys cranwelli and C. ornata, 2 species of bufonids (Bufo arenarum and B. fernandezae and one hylid (Hyla pulchella pulchella. The acoustic records obtained in the field during the reproductive period were analyzed through a program of sound digital analysis comparing the following parameters: dominant frequency, call duration and interval between calls; descriptions regarding type of call and modulation were also made. Three types of basic calls were recognized based on duration; this category was sub-divided depending on the shape of the oscillographic image. Results of this analysis revea] marked differences between advertisement calls, mainly at the level of dominant frequency ranges and call duration. This partition of sound space represents a mechanism of mating isolation that minimizes the interaction between sympatric species that breed at the same time.

  1. [Quantification of parasites in aquatic environments in the Province of Salta, Argentina].

    Science.gov (United States)

    Cacciabue, Dolores Gutiérrez; Juárez, María M; Poma, Hugo R; Garcé, Beatriz; Rajal, Verónica B

    2014-01-01

    Microbiological pollution of recreational waters is a major problem for public health as it may transmit waterborne diseases. To assess water quality, current legislation only requires limits for bacterial indicators; however, these organisms do not accurately predict the presence of parasites. Small number of parasites is usually present in water and although they are capable of causing disease, they may not be high enough to be detected. Detection therefore requires water samples to be concentrated. In this work three recreational aquatic environments located in the province of Salta were monitored over one year. For parasite quantification, water samples were collected every three months and concentrated by ultrafiltration. Detection was performed by microscopy. In addition, monthly monitoring was carried out in each aquatic environment: physicochemical variables were measured in situ and bacteriological counts were determined by traditional microbiological techniques. Of 14 parasites identified, at least nine were detected in each aquatic environment sampled. While bacteriological contamination decreased in most cases during winter (76-99%), parasites were present year-round, becoming a continual threat to public health. Thus, we here propose that it is necessary to use specific parasitological indicators to prevent waterborne disease transmission. Our results suggest that Entamoeba would be a suitable indicator as it was found in all environments and showed minimal seasonal variation. The results obtained in this study have epidemiological relevance and will allow decision-makers to propose solutions for water protection in order to care for population health. Copyright © 2014 Asociación Colombiana de Psiquiatría. Publicado por Elsevier España. All rights reserved.

  2. Environmental monitoring data review of a uranium ore processing facility in Argentina

    International Nuclear Information System (INIS)

    Bonetto, J.

    2014-01-01

    An uranium ore processing facility in the province of Mendoza (Argentina) that has produced uranium concentrate from 1954 to 1986 is currently undergoing the last steps of environmental restoration. The operator has been performing post-closure environmental monitoring since 1986, while the Nuclear Regulatory Authority (ARN) has been carrying out its own independent radiological environmental monitoring for verification purposes since its creation, in 1995. A detailed revision of ARN´s monitoring plan for uranium mining and milling facilities has been undergoing since 2013, starting with this particular site. Results obtained from long-time sampling locations (some of them currently unused) have been analyzed and potentially new sampling points have been studied and proposed. In this paper, some statistical analysis and comparison of sampling-points’ datasets are presented (specifically uranium and radium concentration in groundwater, surface water and sediments) with conclusions pertaining to their keeping or discarding as sampling points in future monitoring plans. (author)

  3. Retrowedge-related Carboniferous units and coeval magmatism in the northwestern Neuquén province, Argentina

    Science.gov (United States)

    Zappettini, Eduardo O.; Chernicoff, Carlos J.; Santos, Joao O. S.; Dalponte, Marcelo; Belousova, Elena; McNaughton, Neal

    2012-11-01

    The studied Carboniferous units comprise metasedimentary (Guaraco Norte Formation), pyroclastic (Arroyo del Torreón Formation), and sedimentary (Huaraco Formation) rocks that crop out in the northwestern Neuquén province, Argentina. They form part of the basement of the Neuquén Basin and are mostly coeval with the Late Paleozoic accretionary prism complex of the Coastal Cordillera, south-central Chile. U-Pb SHRIMP dating of detrital zircon yielded a maximum depositional age of 374 Ma (Upper Devonian) for the Guaraco Norte Formation and 389 Ma for the Arroyo del Torreón Formation. Detrital magmatic zircon from the Guaraco Norte Formation are grouped into two main populations of Devonian and Ordovician (Famatinian) ages. In the Arroyo del Torreón Formation, zircon populations are also of Devonian and Ordovician (Famatinian), as well as of Late Neoproterozoic and Mesoproterozoic ages. In both units, there is a conspicuous population of Devonian magmatic zircon grains (from 406 ± 4 Ma to 369 ± 5 Ma), indicative of active magmatism at that time range. The ɛHf values of this population range between -2.84 and -0.7, and the TDM-(Hf) are mostly Mesoproterozoic, suggesting that the primary sources of the Devonian magmatism contained small amounts of Mesoproterozoic recycled crustal components. The chemical composition of the Guaraco Norte Formation corresponds to recycled, mature polycyclic sediment of mature continental provenance, pointing to a passive margin with minor inputs from continental margin magmatic rocks. The chemical signature of the Huaraco Formation indicates that a magmatic arc was the main provenance for sediments of this unit, which is consistent with the occurrence of tuff—mostly in the Arroyo del Torreón Formation and very scarcely in the Huaraco Formation—with a volcanic-arc signature, jointly indicating the occurrence of a Carboniferous active arc magmatism during the deposition of the two units. The Guaraco Norte Formation is interpreted

  4. Hf isotope study of Palaeozoic metaigneous rocks of La pampa province and implications for the occurrence of juvenile early Neoproterozoic (Tonian) magmatism in south-central Argentina

    Science.gov (United States)

    Chernicoff, C. J.; Zappettini, E. O.; Santos, J. O. S.; Belousova, E.; McNaughton, N. J.

    2011-12-01

    On a global scale, juvenile Tonian (Early Neoproterozoic) magmatic rocks are associated with the extensional events that lead to the breakup of the Rodinia supercontinent. In Argentina, no geological record is available for this time interval, lasting from 1000 to 850 Ma. We present indirect evidence for the existence of Tonian extension in Argentina, as supported by Hf and Nd isotope determinations on Phanerozoic magmatic and sedimentary rocks. We mainly focus on our own Hf isotope determinations carried out on U-Pb SHRIMP dated zircons from Palaeozoic metaigneous rocks of La Pampa province, south-central Argentina, i.e. metagabbros of Valle Daza, dioritic orthogneiss of Estancia Lote 8, and metadiorite of Estancia El Carancho, having found that these rocks were derived from sources of ca. 920 to ca 880 Ma, with ɛHf values between +6.83 and + 9.59. Inherited zircons of this age and character identified in these rocks also point to the same source. We also compile additional Hf and Nd studies from previous work on Phanerozoic magmatic and sedimentary rocks. We preliminarily compare the age of the juvenile Tonian sources referred to in our work with that of two extensional events identified in the São Francisco craton, Brazil.

  5. Dynamism of viticultural systems in Mendoza (1988–2008

    Directory of Open Access Journals (Sweden)

    Van den Bosch M. Eugenia

    2014-01-01

    Full Text Available Viticulture holdings of Mendoza Argentina, were classified by the allocation and the stratum size according to their total acreage based on the data of the last three National Agricultural Censuses (1988, 2002 and 2008. There are different behaviors in each stratum according to each growing zone. It has been observed that in all “oasis” smaller is the holding, higher is the rate of shrinkage. On the other hand the bigger sizes grow and the acreage concentration of these units has increased significantly. Behaviors were clustered according to their path: taking into account its relationship with both zonal and provincial level stratum averages. Areas like the Oasis Sur have suffered a major a regressive process that has involved almost all the strata. The Uco Valley has shown a significant dynamism in units of more than 25 ha, while the small holdings have moved back, but with lower rates than the average of these strata. The Oasis Norte has also been subject to a bipolar process where a significant loss of small vineyards with the rise of new big holdings. Oasis Este is the only one that remains with lower regression rates.

  6. Revisión sistemática del género Halictillus (Hymenoptera: Halictidae: Augochlorini en la Argentina Systematic revision of the genus Halictillus (Hymenoptera: Halictidae: Augochlorini in Argentina

    Directory of Open Access Journals (Sweden)

    Rocío A. González-Vaquero

    2010-06-01

    Full Text Available Entre los grupos basales de la tribu Augochlorini, se encuentra el género de abejas Halictillus Moure, con sólo dos especies descriptas y ninguna revisión sistemática hasta el momento. En este trabajo, se describen cuatro especies nuevas de Halictillus de la Argentina y Chile. Las especies nuevas son: H. amplilobus sp. nov. (de Buenos Aires, Córdoba y Río Negro, H. peninsularis sp. nov. (de la Península de Valdés, Chubut, H. badiclypeus sp. nov. (de Mendoza, La Rioja y Catamarca y H. reticulatus sp. nov. (de las zonas occidentales de Chubut, Neuquén y Río Negro en la Argentina, y las regiones de La Araucanía y Los Lagos en Chile. Se presenta una clave para la determinación de las seis especies que componen el género, así como descripciones detalladas, imágenes de microscopio electrónico de barrido y un mapa de distribución geográfica de las especies nuevas.Among the basal genera of the tribe Augochlorini is the bee genus Halictillus Moure, which comprises only two described species and has no systematic revision at the moment. Four new species of Halictillus from Argentina and Chile are described in this contribution: H. amplilobus sp. nov. (from Buenos Aires, Córdoba and Río Negro Provinces, H. peninsularis sp. nov. (from Península Valdés, Chubut Province, H. badiclypeus sp. nov. (from Mendoza, La Rioja and Catamarca Provinces and H. reticulatus sp. nov. (from western Chubut, Neuquén and Río Negro Provinces in Argentina, and the regions of La Araucanía and Los Lagos in Chile. A key to the six species of the genus, as well as detailed descriptions, scanning electron microscope images and a map with distributional data of the new species are provided.

  7. Research and transference of the ICES over Malargue, Mendoza, uranium bioremediation

    International Nuclear Information System (INIS)

    Scotti, A.; Barbero, N.; Castano-Ganan, A.R; Ramires, A.; Ojeda, C.; Meza, Juan C.; Lopez, S.; Salgan, Laura; Diaz Isenrath, G.

    2009-01-01

    The origin of the International Center for Earth Sciences (ICES) dates back to 2002 when the Acoustic Emission Station on Volcano Peteroa was installed. Up to now, it represents the first of its kind in the entire Andean Cordillera. This scientific activity is jointly coordinated by scientists from Italy and Argentina. At the First Conference on Acoustic Emission held on 2004, a letter of intent for the establishment of ICES was signed. Presently, ICES is composed by 4 departments: Environment and Climate; Anthropology; Environmental and Territorial Environmental Risk; Resources and Exploration Geophysics. One of the primary objectives of ICES is to promoting applied research and development in the broad field of Earth Sciences. The experimental work consists of main 4 steps listed below: The 'Helianthus annus' (sunflower) has proven its ability to raise Uranium (U) in hydroponic systems and was widely used in the model U rizophyiltration extraction of groundwater in Ashtabula, Ohio, USA. Hydroponic trial design consists of 6 treatments and 4 repetitions plants witnesses without minimum level of U, U witnesses plants without and 4 with various levels of U (Stage 1). The Glomus intraradices is a mycorrhizal fungus used in strategies of U phyto-stabilization. Test consists in the cultivation of sunflower with roots inoculated with Glomus intraradices to determine their uptake and translocation of U (Stage 2). The inoculation of 'Glomus intraradices' in 'Helianthus annus' produces an effective symbiosis with the type of strain and its genetic diversity, some genotypes are highly suitable for this. There have been experiences of this kind in the basic research in several countries. In this work, we use the system in 'Helianthus-Glomus' phyto-stabilization or rizophyiltration soil as a strategy for bioremediation of U at the Malargue area, Province of Mendoza (Stage 3). It will launch a pilot test of the transfer plan, which involves creating a garden for the growth of

  8. Counternarcotic Efforts in the Southern Cone: Argentina

    Science.gov (United States)

    1990-06-15

    Corrientes , and in this case* the source is Brazil. Some marijuana is smuggled from Chile through Mendoza and Neuquen provinces. The transportation method...34 3, States in the early 1960’s promoted as part of the Alliance for Progress program the "antifoco" theory which vms eagerly accepted and incorporated

  9. Sustainability of new uranium mining projects in Argentina

    International Nuclear Information System (INIS)

    Navarra, P.R.

    2002-01-01

    The regulatory framework issued in the 1994-1995 period, connected mining activities in Argentina with international good environmental practices. Agreements between National Government and Provinces allow the application of the regulations, while Act No 24.585, the milestone about the matter, establishes the steps for the approval of the Report of Environmental Impact, on successive stages of the project. Specifically for uranium mining and milling, the assessment of the radiological protection aspects of the planned activities is assigned to the Nuclear Regulatory Authority. The National Atomic Energy Commission is at present carrying out two uranium mining projects, that involve the Sierra Pintada and Cerro Solo deposits. The goal of them is restart uranium production in the country in the medium term, by lowing the gap between indigenous and market uranium prices. The first one consists in updating the feasibility study of the, at present inactive, Sierra Pintada Production Center (Mendoza Province). Studies for improving the mining and treatment methods are performed in the project, co-ordinately with the investigation and forecast of mining waste and processing tailings management. Besides, the procedures will be determined taking into account the methodology to be applied when getting the closure stage, about the existing waste and tailings. Development of the Sierra de Pichinan District, Chubut Province (U-Mo), is the objective of the second project. It is remarkable that about Cerro Solo, the main ore deposit belonging to this area, at the prefeasibility stage, CNEA is currently encouraging private investment through a bidding process. Environmental studies are an important aspect of the activities carried out and planned in the area. As a conclusion, with regard uranium mining and milling activities in Argentina, the regulations and environmental technical-scientific knowledge are becoming friendly with the sustainable practice. (author)

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

    OpenAIRE

    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 ...

  11. Aquatic Coleoptera from Mburucuyá National Park (Corrientes Province, Argentina Los coleópteros acuáticos del Parque Nacional Mburucuyá (Provincia de Corrientes, Argentina

    Directory of Open Access Journals (Sweden)

    Patricia L. M. Torres

    2012-06-01

    Full Text Available A list of the species of aquatic Coleoptera collected in Mburucuyá National Park is presented. One hundred and twenty-eight species included in 44 genera and seven families were identified. Ten species are new for Argentina: Agaporomorphus mecolobus Miller and Bidessonotus obtusatus Régimbart (Dytiscidae; Mesonoterus laevicollis Sharp, Suphisellus hyeroglyphicus Zimmermann, S. rufulus Zimmermann, S. sexnotatus (Régimbart, and Notomicrus traili Sharp (Noteridae; Berosus pluripunctatus Mouchamps, Enochrus guarani Fernández and Helobata corumbaensis Fernández & Bachmann (Hydrophilidae. Two families (Scirtidae and Spercheidae, 12 genera and 69 species are first cited for Corrientes Province.Se presenta una lista de las especies de coleópteros acuáticos colectadas en el Parque Nacional Mburucuyá. Se identificaron 128 especies, incluidas en 44 géneros y siete familias. Diez especies se citan por primera vez para la Argentina: Agaporomorphus mecolobus Miller y Bidessonotus obtusatus Régimbart (Dytiscidae; Mesonoterus laevicollis Sharp, Suphisellus hyeroglyphicus Zimmermann, S. rufulus Zimmermann, S. sexnotatus (Régimbart y Notomicrus traili Sharp (Noteridae; Berosus pluripunctatus Mouchamps, Enochrus guarani Fernández y Helobata corumbaensis Fernández & Bachmann (Hydrophilidae. Dos familias (Scirtidae y Spercheidae, 12 géneros y 69 especies son citados por primera vez para la provincia de Corrientes.

  12. Mendoza : Rahvuslike huvide eiramine toob Euroliidule kollapsi / Alan Mendoza ; interv. Indrek Veiserik

    Index Scriptorium Estoniae

    Mendoza, Alan

    2008-01-01

    Intervjuu Henry Jacksoni Ühingu presidendiga, kes vastab küsimustele, mis puudutavad NATO laienemist, Lissaboni lepet, Euroopa Liidu kaitse- ja välispoliitikat, Eesti välispoliitikat ja suhteid Venemaaga. Vt. samas: Alan Mendoza ja Henry Jacksoni ühing

  13. Evaluation of the Cerro Solo nuclear ore, province of Chubut. The Cerro Solo project within the frame of uranium exploration in Argentina. Pt. 1

    International Nuclear Information System (INIS)

    Solis, R.J.; Navarra, P.R.; Benitez, A.F.; Gallucci, A.R.

    1993-01-01

    The Cerro Solo ore deposit was selected by the CNEA to invest in an assessment project because of their promising grade and amount of known and potential resources, significant to Argentina's uranium requirements. The deposit, which is located in the central region of the Chubut Province, belongs to the sandstone type and is hosted by the cretaceous Chubut Group. Technical studies carried out forecast an important growth of nuclear capacity to meet Argentina's energy requirements in the first two decades of of the the next century. To be in position to confront the challenge presented by increasing uranium resources to fuel the nuclear powers plants it is very important, as a first step, to improve the geological knowledge of uranium favorability in the country. The preliminary results of the Cerro Solo project indicate that the eastern slope of the Pichinan hills is a promising area for development of uranium resources, increasing the favorability of the San Jorge Basin in order to allow contributing to meet future uranium requirements. The Cerro Solo Project was planned in a sequential manner, as a multidisciplinary effort which includes studies on: geologic setting of mineralization, resource estimates, costs of mining and milling methods, economic analysis and environmental impact research. Among the mining methods, studies include the alternative of the in-situ leaching technology, which is becoming a low producing cost interesting possibility. (Author)

  14. Digenean parasites of six species of birds from Formosa Province, Argentina Digéneos parásitos de seis especies de aves de la provincia de Formosa, Argentina

    Directory of Open Access Journals (Sweden)

    Lía Inés Lunaschi

    2009-04-01

    Full Text Available The aim of this paper is to increase the knowledge of the diversity of digenean parasites from birds collected in Formosa Province, Argentina. The helminthological survey of 15 specimens of 6 bird species revealed the presence of 5 digenean species: Clinostomatopsis sorbens (Braun, 1899 and Clinostomum marginatum (Rudolphi, 1819 (Clinostomidae from the esophagus of Tigrisoma lineatum (Boddaert; Glaphyrostomum propinquum Braun, 1901 (Brachylaimidae from the cloaca of Guira guira (Gmelin; Stomylotrema vicarium Braun, 1901 (Stomylotrematidae from the cloaca of Busarellus nigricollis (Latham and Buteogallus meridionalis (Latham; and Athesmia heterolecithodes (Braun, 1899 (Dicrocoeliidae from the bile canaliculi of G. guira, Milvago chimachima (Vieillot and Rostrhamus sociabilis (Vieillot. The present study adds new morphometric data on 2 species of digeneans (C. sorbens and G. propinquum and new host records for C. sorbens, G. propinquum, A. heterolecithodes and S. vicarium. The genera Clinostomatopsis Dollfus, 1932 and Glaphyrostomum Braun, 1901 are reported for the first time in Argentina.El propósito de este trabajo es incrementar el conocimiento sobre la diversidad de digéneos parásitos de aves recolectadas en la provincia de Formosa, Argentina. El estudio helmintológico de 15 ejemplares de 6 especies de aves reveló la presencia de 5 especies de digéneos: Clinostomatopsis sorbens (Braun, 1899 y Clinostomum marginatum (Rudolphi, 1819 (Clinostomidae halladas en el esófago de Tigrisoma lineatum (Boddaert; Glaphyrostomum propinquum Braun, 1901 (Brachylaimidae recolectada de la cloaca de Guira guira (Gmelin; Stomylotrema vicarium Braun, 1901 (Stomylotrematidae encontrada en la cloaca de Busarellus nigricollis (Latham y Buteogallus meridionalis (Latham; Athesmia heterolecithodes (Braun, 1899 (Dicrocoeliidae hallada en los canalículos biliares de G. guira, Milvago chimachima (Vieillot y Rostrhamus sociabilis (Vieillot. El presente estudio

  15. [The relationship between socioeconomic factors and maternal and infant health programs in 13 Argentine provinces].

    Science.gov (United States)

    Etchegoyen, Graciela; Paganini, José María

    2007-04-01

    To analyze the relationship between maternal and infant health and socioeconomic, cultural, and sanitation factors in Argentina; to evaluate how health program quality affects the primary health indicators for mothers and infants. This is a cross-sectional study with multiple variables. The authors studied six indicators for maternal and infant health: rates for maternal, infant, neonatal, and postneonatal mortality; the percentage of newborns with low birthweight; and the percentage of premature newborns. The study was conducted in 79 administrative units in 13 provinces that represent different geographic regions of Argentina. They included (1) the provinces of Salta and Jujuy in northwest Argentina; (2) the provinces of Córdoba, Santa Fe, and Buenos Aires in central Argentina; (3) the provinces of Entre Ríos and Misiones in the Mesopotamia or northeast region; (4) the provinces of San Luis, San Juan, and Mendoza in the Cuyo or northwest, Andean region; and (5) the provinces of Neuquén, Río Negro, and Chubut in the south. The explanatory variable in the study was the quality of health programs, controlled by socioeconomic, cultural, and sanitation factors in 1999 and 2000. The definition of program quality ("poor," "average," "good," and "very good") was based on quantitative and qualitative analysis of selected variables such as policies, organization, and procedures as determined by the investigators. Documentation was obtained from secondary official sources. The investigators interviewed 117 health system managers (including supervisors of provincial and local health programs, administrators of maternal and child health programs, and hospital directors), who provided information on characteristics and indicators of the health programs. There were marked geographic differences in the levels of maternal and infant health, medical care, and socioeconomic, cultural, and sanitation factors. Only 10.0% of health programs were classified as "very good," 35.4% as

  16. First report of diarrheic shellfish toxins in mollusks from Buenos Aires province (Argentina associated with dinophysis spp.: evidence of okadaic acid, dinophysistoxin-1 and their acylderivatives

    Directory of Open Access Journals (Sweden)

    Eugenia A Sar

    2012-06-01

    Full Text Available In January 2010, the toxin-producing dinoflagellates Dinophysis acuminata and D. caudata (10³ cells·l-1 were detected in Mar Azul during routine plankton monitoring in Buenos Aires Province coastal waters, Argentina. Wild clams Mesodesma mactroides and Donax hanleyanus from Mar Azul intertidal beach, which are part of the diet for local inhabitants and tourists, tested positive with the offcial lipophilic mouse bioassay. This paper focuses on the detection of Diarrhetic Shellfsh Poison (DSP toxins in these samples using a HPLC-FLD pre column derivatization procedure. The data showed that shellfish were contaminated with complex DSP toxin profiles composed of Okadaic Acid (OA, Dinophysistoxin-1 (DTX-1, Acyl-Dinophysistoxin-1 (Acyl-DTX-1 and Acyl-Okadaic Acid (Acyl-OA. The DSP toxins found in this study produce diarrhea symptoms consistent with those experienced by patients who had ingested cooked shellfish in January. This is the first report of Acyl-derivatives in South American Atlantic shellfish samples and of OA in Argentinean shellfish samples.Primer reporte de toxinas diarreicas de moluscos en bivalvos de la Provincia de Buenos Aires (Argentina asociado con Dinophysis spp.: evidencia de Ácido Okadaico, Dinophysistoxina-1 y sus acyl-derivados. En enero de 2010, los dinoflagelados productores de toxinas Dinophysis acuminata y D. caudata (10³ cells·l-1 fueron detectados en Mar Azul durante un monitoreo rutinario de fitoplancton realizado en aguas costeras de la Provincia de Buenos Aires, Argentina. Mesodesma mactroides (almeja amarilla y Donax hanleyanus (berberecho del intermareal de Mar Azul, que son parte de la dieta de los habitantes del lugar y de turistas, dieron resultado positivo para toxinas lipofílicas mediante bioensayo ratón. Este trabajo está focalizado en la detección de Toxinas Diarreicas de Moluscos (DSP en muestras colectadas durante el evento de toxicidad usando un HPLC-FLD con procedimiento de derivatizaci

  17. Historia del Hogar Casa Cuna de la ciudad de Mendoza: La institución que permanece

    OpenAIRE

    Farias Carracedo, Ana Carolina

    2017-01-01

    Este trabajo presenta la historia del Hogar Casa Cuna en la ciudad de Mendoza, Argentina,desde sus orígenes, a principios del siglo XX, hasta la actualidad enmarcando dicha historia enel contexto legislativo nacional y provincial.En sus orígenes, la Casa Cuna fue fundada por las Damas de la Caridad. En 1950 el Estado, pormedio de la Dirección Provincial del Menor, se hizo cargo de dicha institución aunque delegó elcuidado de los niños a las Hermanas de Nuestra Señora del Rosario que desempeña...

  18. Characterization of agua de Ramon marbles, Cordoba Province, Argentina; Caracterizacion de los marmoles de agua de Ramon Provincia de Cordoba, Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Tourn, S; Castro, L. [Departamento de Ciencias Geologicas, Facultad de Ciencias Exactas y Naturales, Universidad de buenos Aires, (Argentina)]. E mail: selvia@fcen.uba.ar, lilianacastro@fibertel.com.ar

    2004-09-01

    Agua de Ramon district is located in the NW of Cordoba, Argentina, between 3 49' and 30{sup 0}52' S and 65{sup 0}21' and 65{sup 0}24' W, in the Eastern Pampean Range setting. It was a very important tungsten district until the end of 1950'decade when tungsten mining became of no economic interest. The objective is to report for the first time the petrological, mineralogical and geochemical characteristics of several marble lenses located in the sourthern of the area. Marble outcrops are lenticular ranging from 1 m to 80 m in length and 0.50 m to 20 m width. They appear massive, fine-grained and in light colors (white, pale green, very light brown and pale gray). These last varieties show a distinct banded structure due to little differences in color. These marbles are mainly composed of magnesian calcite accompanied by minor amounts of dolomite, forsterite, humite group minerals, tremolite, talc, serpentine and clinochlore, and scheelite, sphene, apatite and opaque minerals like hematite, magnetite, illmenite, pirrothite and pyrite as accessory minerals. Major chemical analyses indicate a relatively high SiO2 and MgO content, and minor CaO, in comparison with marbles of this type. Mineral paragenesis was useful to evaluate metamorphism conditions in this area. [Spanish] El distrito Agua de Ramon se localiza en el departamento de Minas al noroeste de la provincia de Cordoba, Argentina, entre los paralelos 30{sup 0}49' y 30{sup 0}52' de latitud sur y los meridianos 65{sup 0}21' y 65{sup 0}24' de longitud oeste, en el ambito de las Sierras Pampeanas Orientales. En el pasado constituyo un importante distrito de explotacion wolframifera, pero dicha actividad se halla paralizada desde fines de la decada del '50. El objetivo de este trabajo es hacer conocer por primera vez las caracteristicas de los marmoles localizados en el sector sur desde el punto de vista petrografico, mineralogico y geoquimico de manera que permita realizar un analisis petrogenetico. Los cuerpos son

  19. Phlebotominae fauna in the Province of Tucumán, Argentina Fauna flebotomínica en la Provincia de Tucumán, Argentina

    Directory of Open Access Journals (Sweden)

    Elizabeth CÓRDOBA LANÚS

    2002-02-01

    Full Text Available American Tegumentary Leishmaniasis is endemic in the province of Tucumán since 1916 where the first Argentinian case of leishmaniasis was reported. An epidemic outbreak took place in the province during 1986-1988, after that the number of cases increased gradually again between 1991-1996. Since October of 1999 sand flies captures were performed at different places associated with current and past transmission or sites identified as risky ones. The collections were carried out with CDC mini light trap and modified Shannon trap. In this study 2338 Phlebotominae were captured being prevalent Lutzomyia neivai (Lu intermedia complex (97.7%, followed by Lu. migonei. We report Lu. shannoni for the first time in the province. Phlebotominae was abundant in the warm and humid months and showed a peak before the summer rains. Lutzomyia neivai showed a pattern (peridomestic prevalence, anthropophilia, abundance in secondary forest consistent with other outbreak studies. Thus, the results reinforce this species incrimination as vector of leishmaniasis in the area. Domestic animals close to houses increase its abundance, and so the probable associated risk of human-Phlebotominae contact. Further studies should be done to understand the role of each Phlebotominae species in the transmission of leishmaniasis in Tucumán in order to design entomological surveillance strategies.La Leishmaniasis Tegumentaria Americana es endémica en la provincia de Tucumán desde 1916, lugar donde se reportara el primer caso argentino de leishmaniasis. Entre 1986-88 ocurrió un brote epidémico en la provincia, después de este hecho el número de casos aumentó en forma gradual nuevamente entre los años 1991-1996. A partir de Octubre de 1999 se realizaron capturas de Phlebotominae en la provincia en diferentes sitios asociados con transmisión actual o pasada de leishmaniasis o en aquellos sitios identificados como de riesgo. Los muestreos se llevaron a cabo con mini trampa de

  20. Gravimetric model of the Gastre trough, province of Chubut, Argentina; Modelo gravimetrico en la fosa de Gastre, provincia de Chubut, Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Lince Klinger, F.; Nacif, S.; Martinez, M. P.; Gimenez, M. E.; Ruiz, F.; Alvarez, O.

    2011-07-01

    A gravimetric study of the Gastre trough in the Province of Chubut, to the southwest of the Canadon Asfalto basin, has allowed us to determine the geometry of its crystalline basement. Using filtering techniques we were able to map residual Bouguer anomalies, which show the heterogeneities situated within the upper crust, some of which are linked to recognised geological structures. The gravimetric minima in the residual Bouguer anomaly map are associated with graben-type basins, flanked by positive gravity values associated with alignments identified on the surface and with the overall topographic relief of the Gastre trough. After suitable treatment of the density values of the outcrops and seismic data we were able to construct a 2D density model, perpendicular to the trough, which indicated a depth of 3600 m. The importance of this study lies in the fact that it has been possible to arrive at a gravimetric characterization of the Gastre trough in the Canadon Asfalto basin sector, a potentially hydrocarbon-bearing area hitherto lacking in reliable data concerning its subsoil. (Author)

  1. Comunidades de malezas en cultivos hortícolas en la Provincia de Neuquén (Argentina Weed's communities in vegetable crops in Neuquen Province, (Argentina

    Directory of Open Access Journals (Sweden)

    María Beatriz Cerazo

    2008-07-01

    Full Text Available La gran mayoría de los cultivos hortícolas son muy sensibles a la competencia de malezas, las cuales inciden en los rendimientos y calidad de los mismos y en ocasiones determinan la pérdida total del cultivo. El presente trabajo tuvo como objetivo conocer la composición florística de las comunidades de malezas y su análisis sintaxonómico, ya que ambos constituyen un buen parámetro para medir el estado de los cultivos. La vegetación fue muestreada siguiendo la metodología de Braun Blanquet, en explotaciones de seis localidades de la provincia. A partir de esta información se determinaron ocho asociaciones, de las cuales seis están comprendidas en la clase Stellarietea mediae (Br. Bl. 1931 Tx., Prsg. et Lohm, 1950 y las dos restantes en Artemisietea vulgaris Lohm, Prsg et Tüxen 1950. El deficiente estado del cultivo está señalado por el desarrollo de malezas perennes de difícil control, incluidas en su mayoría en la clase Artemisietea vulgaris. Se inventariaron ochenta y nueve especies, para los periodos otoño- invierno y primavera - verano. Existe un claro predominio de Dicotiledóneas (79 % sobre Monocotiledóneas y de malezas anuales (66 % sobre perennes.Most vegetable crops are very sensitive to the weed competition, which affects the yields and quality and sometimes the total lost of the crop. The objective of this study was to evaluate the floristic composition of the weed communities and to analyse its sintaxonomy, because both are effective parameters for measuring the state of the crop. The vegetation was sampled following the Braun-Blanquet methodology on farms in six localities in the province. We determined eight associations from this information: six are included in the class Stellarietea mediae (Br. Bl. 1931 Tx., Prsg. et Lohm, 1950 and the other two in Artemisietea vulgaris Lohm, Prsg and Tüxen 1950. The deficient state of the crop resulted from the development of perennial and difficult to control weeds, most of

  2. 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

  3. Paleontology, sedimentology and paleoenvironment of a new fossiliferous locality of the Jurassic Cañadón Asfalto Formation, Chubut Province, Argentina

    Science.gov (United States)

    Gallego, Oscar F.; Cabaleri, Nora G.; Armella, Claudia; Volkheimer, Wolfgang; Ballent, Sara C.; Martínez, Sergio; Monferran, Mateo D.; Silva Nieto, Diego G.; Páez, Manuel A.

    2011-02-01

    A new Late Jurassic assemblage of “conchostracans”, ostracods, bivalves and caddisfly cases from the locality “Estancia La Sin Rumbo”, Chubut Province (Patagonia, Argentina) is recorded. The fossils occur in the upper part of an outcropping 45 m thick volcaniclastic lacustrine sequence of yellowish tuffs and tuffites of the Puesto Almada Member, which is the upper member of the Cañadón Asfalto Formation with U/Pb age of 161 ± 3 Ma. The sequence represents one sedimentary cycle composed of a (lower) hemicycle of expansion and a (higher) hemicycle of contraction of the water body. The invertebrates lived in small freshwater bodies during the periods of expansion of the lake. The occurrence of a great number of small spinicaudatans, associated with mud-cracks, is evidence of dry climatic conditions and suggests several local mortality events. The spinicaudatan record of the fushunograptid-orthestheriid (component of the Eosestheriopsis dianzhongensis fauna) and the presence of Congestheriella rauhuti Gallego and Shen, suggest a Late Jurassic (Oxfordian to Tithonian) age. Caddisfly cases are recorded for the first time in the Cañadón Asfalto Basin.

  4. Reprint of "Survey and first molecular characterization of Echinococcus granulosus sensu stricto (G1) in Pampas fox (Lycalopex gymnocercus) in Buenos Aires province, Argentina".

    Science.gov (United States)

    Scioscia, Nathalia Paula; Petrigh, Romina Sandra; Beldomenico, Pablo Martín; Fugassa, Martín; Denegri, Guillermo María

    2017-01-01

    Echinococcosis is a zoonosis caused by tapeworms of the genus Echinococcus. Echinococcus granulosus sensu lato (s. l.) has a world-wide distribution and its transmission is primarily maintained in a synanthropic cycle with dogs as definitive hosts and livestock species as intermediate hosts. However, many wild canids also function as definitive hosts for E. granulosus s. l. Echinococcosis in humans is mainly caused by E. granulosus sensu stricto (s. s.) G1 genotype. In the present work, we expanded the epidemiological study on echinococcosis reported cases in Pampas fox (Lycalopex gymnocercus) to provide a prevalence estimate for rural areas of southern Buenos Aires province, Argentina. Ninety-five whole intestines were analyzed using the sedimentation and counting technique with a result of 83 foxes (87.37%) harboring at least one helminth species. E. granulosus s. l. adults were found in one Pampas fox (1.05%). These adult helminthes were E. granulosus s. s. (G1) according to the genotyping analysis of a 450-bp region of the mitochondrial cytochrome c oxidase subunit 1 (cox1) gene. Copyright © 2016 Elsevier B.V. All rights reserved.

  5. Towards leprosy elimination by 2020: forecasts of epidemiological indicators of leprosy in Corrientes, a province of northeastern Argentina that is a pioneer in leprosy elimination

    Directory of Open Access Journals (Sweden)

    Elisa Petri de Odriozola

    Full Text Available BACKGROUND Corrientes, a province of northeastern Argentina with endemic leprosy, has improved its epidemiological indicators, however, a study of the dynamics over time is lacking. OBJECTIVES We analysed data of 1308 leprosy patients between 1991 to 2014, and the forecast for 2020. METHODS Descriptive statistics and stepwise Bayesian model selection were performed. Forecasts were made using the median of 100,000 projections using the parameters calculated via Monte Carlo methods. RESULTS We found a decreasing number of new leprosy cases (-2.04 cases/year; this decrease is expected to continue by an estimated 20.28 +/- 10.00 cases by 2020, evidenced by a sustained decline in detection rate (from 11 to 2.9/100,000 inhabitants. Age groups that were most affected were 15-44 (40.13% and 45-64 (38.83% year olds. Multibacillary forms (MB predominated (70.35% and while gradually declining, between 10 and 30% developed disability grade 2 (DG2 (0.175 (0.110 - 0.337 DG2/MB cases, with a time delay between 0 to 15 years (median = 0. The proportion of MB clinic forms and DG2 increased and will continuously increase in the short term (0.036 +/- 0.018 logit (MB/total of cases. MAIN CONCLUSIONS Corrientes is on the way to eliminating leprosy by 2020, however the increased proportion of MB clinical forms and DG2 signals a warning for disease control efforts.

  6. 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.

  7. Geographical information systems as a tool in limnological studies An applied case study in a shallow .lake of a plain area, Buenos Aires province, Argentina

    International Nuclear Information System (INIS)

    Quiroz, Orlando; Romanelli, Asuncion; Martinez, Daniel

    2009-01-01

    The understanding of the hydrological functioning and the interaction among the different water bodies in an area is essential when a sustainable use of the hydric resources is considered. The aim of the present paper is to assess both hydrological-limnological methods and GIS as an integrated methodology applied to the study of shallow lakes, and the hydrological behavior of shallow wetlands in plain areas. La Salada is an areic permanent shallow lake with an area of 5,78 km 2 located near La Dulce town (SE of Buenos Aires Province, Argentina). In this paper we applied methods and tools of the Geographical information Systems in order to assess both, the evolution and state of the wetland. Topographic profiles, showing the relationship among the lake and the other aquatic systems, and also a multi temporal assessment of the morphometric parameters were performed by using a Digital Terrain Model of the area. A sample grid was designed to obtain bathymetric, hydrogeochemical and isotopic data. The chemical water composition is homogeneous in area and depth. changes in the conductivity values along depth, the isotopic contents and the Gibbs diagram showed that the evaporation is the main process controlling the water chemistry. Physical-chemical parameters established water quality and uses of the lake.

  8. Towards leprosy elimination by 2020: forecasts of epidemiological indicators of leprosy in Corrientes, a province of northeastern Argentina that is a pioneer in leprosy elimination.

    Science.gov (United States)

    Odriozola, Elisa Petri de; Quintana, Ana María; González, Victor; Pasetto, Roque Antonio; Utgés, María Eugenia; Bruzzone, Octavio Augusto; Arnaiz, María Rosa

    2017-06-01

    Corrientes, a province of northeastern Argentina with endemic leprosy, has improved its epidemiological indicators, however, a study of the dynamics over time is lacking. We analysed data of 1308 leprosy patients between 1991 to 2014, and the forecast for 2020. Descriptive statistics and stepwise Bayesian model selection were performed. Forecasts were made using the median of 100,000 projections using the parameters calculated via Monte Carlo methods. We found a decreasing number of new leprosy cases (-2.04 cases/year); this decrease is expected to continue by an estimated 20.28 +/- 10.00 cases by 2020, evidenced by a sustained decline in detection rate (from 11 to 2.9/100,000 inhabitants). Age groups that were most affected were 15-44 (40.13%) and 45-64 (38.83%) year olds. Multibacillary forms (MB) predominated (70.35%) and while gradually declining, between 10 and 30% developed disability grade 2 (DG2) (0.175 (0.110 - 0.337) DG2/MB cases), with a time delay between 0 to 15 years (median = 0). The proportion of MB clinic forms and DG2 increased and will continuously increase in the short term (0.036 +/- 0.018 logit (MB/total of cases). Corrientes is on the way to eliminating leprosy by 2020, however the increased proportion of MB clinical forms and DG2 signals a warning for disease control efforts.

  9. Annual Activity Density of groundbeetles (Coleoptera: Carabidae) of a Celtis ehrenbergiana (Rosales: Celtidaceae) Forest of Buenos Aires Province, Argentina

    Science.gov (United States)

    Castro, Adela V.; Porrini, Darío P.; Cicchino, Armando C.

    2014-01-01

    Abstract The aim of this study was to describe the annual activity cycle, the sex ratio, and the relationship between the weather variables and activity density of the 16 most abundant carabid species of a typical southeastern region of Pampasia, Argentina. The study focused on the southernmost Celtis ehrenbergiana (Klotzsch) Liebmann ( =  C. tala Guillies ex Planch) native forest of the region, from March 2008 to March 2009, a period during which there was a marked draught associated with the La Niña phenomenon. Forty-five pitfall traps were emptied once every 2 wk, and the occurrence of larvae, tenerals, and subtenerals was recorded. Photoperiod, temperature, and precipitations explained 35% of the total variation in the catch. Total carabid activity was high in early autumn and late spring. Eight species reached their maximum activity in spring, five in winter, two in summer, and one in autumn. Possible reproductive strategies, the influence of different variables involved in the life cycles of the species, and the sex ratio and their limitations are discussed. RESUMEN El objetivo de este trabajo fue describir la proporción de sexos, el ciclo de actividad annual, la relación entre las variables meteorológicas y la actividad de las 16 especies más frecuentes de carábidos de una región típica del sudeste de la Pampasia, Argentina. El trabajo se enfocó en el talar, C. ehrenbergiana (Klotzsch) Liebmann ( =  C. tala Guillies ex Planch), más austral de la región, durante marzo 2008-marzo 2009, período marcado por una sequía asociada con el fenómeno La Niña. Se utilizaron 45 trampas “pitfall” recambiadas quincenalmente. Se registró la presencia de larvas, tenerales y subtenerales. El fotoperíodo, la temperatura y las precipitaciones explicaron el 35% de la variación en el número de total de individuos. La actividad total de los carábidos fue alta en otoño temprano y primavera tardía. Ocho especies alcanzaron el pico de m

  10. Los coleópteros y heterópteros acuáticos del Parque Nacional Calilegua (Provincia de Jujuy, Argentina Aquatic Coleoptera and Heteroptera from Calilegua National Park (Jujuy Province, Argentina

    Directory of Open Access Journals (Sweden)

    Patricia L. M. Torres

    2008-06-01

    Full Text Available Se expone una lista de las especies de Coleoptera y Heteroptera presentes en los cuerpos de agua del Parque Nacional Calilegua. Se registraron 51 especies de Coleoptera incluidas en 28 géneros y cinco familias, y 37 especies de Heteroptera distribuidas en 22 géneros y 10 familias; sólo cuatro especies de Coleoptera y cinco de Heteroptera fueron citadas previamente del parque. Se mencionan por primera vez para la Argentina dos especies de Veliidae (Heteroptera: Rhagovelia trista Gould y Platyvelia brachialis (Stål, así como una especie y un género de Dytiscidae (Coleoptera: Desmopachria chei K. B. Miller y Bidessonotus Régimbart. Además, es la primera ocasión en que se mencionan para la provincia de Jujuy 24 especies y 11 géneros de Coleoptera (Leuronectes Sharp, Bidessonotus, Hypodessus Guignot, Desmopachria Babington, Celina Aubé, Gyrinus Linné, Haliplus Latreille, Hydrocanthus Say, Suphis Aubé, Anacaena Thomson, Derallus Sharp y 19 especies y 12 géneros de Heteroptera (Mesovelia Mulsant & Rey, Hebrus Curtis, Merragata White, Microvelia Westwood, Rhagovelia Mayr, Platyvelia J. T. Polhemus & D. A. Polhemus, Limnogonus Stål, Curicta Stål, Ranatra Fabricius, Centrocorisa Lundblad, Pelocoris Stål, Neoplea Esaki & China.A list of the species of aquatic Coleoptera and Heteroptera occurring in Calilegua National Park is presented. Fifty-one species of Coleoptera included in 28 genera and five families, and 37 species of Heteroptera belonging to 22 genera and 10 families were recorded. Only four species of Coleoptera and five of Heteroptera had been previously cited from the park. Two species of Veliidae (Heteroptera (Rhagovelia trista Gould, Platyvelia brachialis (Stål, along with one species and one genus of Dytiscidae (Coleoptera (Desmopachria chei K. B. Miller, Bidessonotus Régimbart are new records for Argentina. Twenty-four species and 11 genera of Coleoptera (Leuronectes Sharp, Bidessonotus, Hypodessus Guignot, Desmopachria

  11. Vigilancia de la resistencia de Neisseria gonorrhoeae en un hospital de la provincia de Santa Fe, Argentina: 1997-2004 Resistance surveillance of Neisseria gonorrhoeae in a hospital in Santa Fe province, Argentina: 1997-2004

    Directory of Open Access Journals (Sweden)

    E. De Los A. Méndez

    2008-09-01

    Full Text Available Se determinaron los fenotipos de resistencia caracterizados por la concentración inhibitoria mínima, la difusión con discos y la producción de β-lactamasa de 434 aislamientos de Neisseria gonorrhoeae obtenidos de pacientes atendidos en el Servicio de Enfermedades de Transmisión Sexual del Hospital Dr. José María Cullen, Santa Fe, Argentina. Se realizaron pruebas de sensibilidad a los siguientes antimicrobianos: penicilina, tetraciclina, ciprofloxacina, espectinomicina, azitromicina y ceftriaxona. A tres aislamientos resistentes a ciprofloxacina se les realizó electroforesis de campo pulsado. Se destacaron tres situaciones epidemiológicas de interés: en el año 1997, alta incidencia de aislamientos con resistencia plasmídica a tetraciclina (33,3%; en el período 2002-2004, un aumento significativo de la resistencia plasmídica a penicilina (9,7% a 34,8%; y en el año 2000, la emergencia de dos de los tres primeros aislamientos con resistencia a quinolonas del país. El primer aislamiento resistente a azitromicina en nuestro hospital emerge en el 2004. Este trabajo jerarquiza el rol del Laboratorio de Microbiología Clínica en la orientación del tratamiento empírico de la gonorrea.Resistance phenotypes characterized by minimum inhibitory concentration, disk diffusion and β-lactamase production were determined in 434 isolates from patients attending the Sexually Transmitted Disease Service at Dr. José María Cullen Hospital in Santa Fe, Argentina. Susceptibility tests to penicillin, tetracycline, ciprofloxacin, espectinomycin, azithromycin and ceftriaxone were performed. Pulsed-field gel electrophoresis was conducted made to on three ciprofloxacin-resistant isolates. Epidemiologically speaking, three interesting events should be highlighted: during 1997, plasmid-mediated high level tetracycline-resistant strains were observed (33.3%; from 2002 to 2004 a significant increase of plasmid-mediated penicillin-resistant strains was

  12. Distribución espacial de la rugosidad en parcelas agrícolas en Provincia de Buenos Aires - Argentina Roughness spatial distribution in agricultural parcels in Buenos Aires Province, Argentina

    Directory of Open Access Journals (Sweden)

    Héctor Salgado

    2006-08-01

    Full Text Available O uso de imagens SAR para estimar e monitorar a umidade superficial do solo requer que se considere outros fatores que influenciam na retrodifusão do sinal-radar, entre os quais a rugosidade da cobertura da superfície à escala de centímetro é muito importante. Há diversos métodos para determinar a rugosidade, mas muitos são caros ou de operação de campo complexa. Neste trabalho, é apresentado um método versátil e econômico que usa máquina fotográfica e tela quadrada. Cada fotografia é processada numericamente obtendo a altura RMS, como parâmetro da rugosidade da cobertura. Por meio de técnicas geoestatísticas de krigagem é estimada a distribuição espacial da rugosidade. São mostradas experiências em áreas com cobertura de trigo, localizadas na área agrícola serrana da Província o Buenos Aires, Argentina. Os valores de RMS encontrados (29 mm Use of SAR images for soil surface moisture estimation requires taking into account the other factors that influence the radar backscattering signal, among which the surface cover roughness at centimeter scale is very important. There are several methods to determine the roughness, but many are expensive or complex field operation. A versatile and economic method that uses a photographic camera and a girded screen is presented. Each picture is numerically processed obtaining the RMS height, as parameter of the crop-soil complex roughness. By means of krigging geostatistics techniques the spatial distribution of roughness is estimated. Experiences in parcels with wheat cover, located in the hill agricultural area of Buenos Aires Province, Argentina are shown. The found RMS values (29 mm < RMS < 48 mm are analyzed with four roughness approaches. Their utility in order to estimate soil surface moisture status in agricultural parcels by means of their application like input into the SAR images backscattering models is stated.

  13. Isotopes Tracing the Water Cycle in the Pampeano Aquifer at the Southeast of Buenos Aires Province, Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Martinez, D. E.; Quiroz Londono, O. M. [Instituto de Geologia de Costas y del Cuaternario, U.N. de Mar del Plata and Consejo Nacional de Investigaciones Cientificas y Tecnicas, CONICET, Buenos Aires (Argentina); Bocanegra, E.; Massone, H. E. [Instituto de Geologia de Costas y del Cuaternario, U.N. de Mar del Plata (Argentina); Dapena, C. [Consejo Nacional de Investigaciones Cientificas y Tecnicas, CONICET, Buenos Aires (Argentina)

    2013-07-15

    A sedimentary sequence of loess-like Quaternary deposits, with a thickness ranging from a few metres to about 100 m, covers about 1 500 000 km{sup 2} in the Argentine Pampas. These deposits, named the Pampeano Sediments, constitute the main groundwater resource for the sustainability of agricultural production in Argentina. An isotope hydrology survey was carried out on a catchment area of about 10 000 km{sup 2} covered by these sediments in order to improve the understanding of the hydrological cycle. Since 2005, stable isotopes ({sup 2}H, {sup 18}O) have been determined in: (a) rainwater collected at three points in the basin; (b) stream water continuously sampled weekly at three points in the main river; and (c) groundwater samples. Furthermore, {sup 3}H concentration was determined in nearly 50 samples. Results show a seasonal effect in precipitation and the weighted average values as characteristic recharge water. A numerical flow model using the code MODFLOW was developed simultaneously and the isotopic results used to validate it. Groundwater is homogenous in its isotope composition indicating a dispersive flow model. Dominance of baseflow in the streamflow composition is another conclusion of the study. (author)

  14. Isolation and characterization of onion degrading bacteria from onion waste produced in South Buenos Aires province, Argentina.

    Science.gov (United States)

    Rinland, María Emilia; Gómez, Marisa Anahí

    2015-03-01

    Onion production in Argentina generates a significant amount of waste. Finding an effective method to recycle it is a matter of environmental concern. Among organic waste reuse techniques, anaerobic digestion could be a valuable alternative to current practices. Substrate inoculation with appropriate bacterial strains enhances the rate-limiting step (hydrolysis) of anaerobic digestion of biomass wastes. Selection of indigenous bacteria with the ability to degrade onion waste could be a good approach to find a suitable bioaugmentation or pretreatment agent. We isolated bacterial strains from onion waste in different degradation stages and from different localities. In order to characterize and select the best candidates, we analyzed the growth patterns of the isolates in a medium prepared with onion juice as the main source of nutrients and we evaluated carbon source utilization. Nine strains were selected to test their ability to grow using onion tissue and the five most remarkable ones were identified by 16S rRNA gene sequencing. Strains belonged to the genera Pseudoxanthomonas, Bacillus, Micrococcus and Pseudomonas. Two strains, Bacillus subtilis subsp. subtillis MB2-62 and Pseudomonas poae VE-74 have characteristics that make them promising candidates for bioaugmentation or pretreatment purposes.

  15. Assessment of human health risk related to metals by the use of biomonitors in the province of Cordoba, Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Carreras, Hebe A. [Departamento de Quimica, Instituto Multidisciplinario de Biologia Vegetal, IMBIV/CONICET-UNC, Facultad de Ciencias Exactas, Fisicas y Naturales, Universidad Nacional de Cordoba, Av. Velez Sarsfield 1611, Ciudad Universitaria, X5016GCA Cordoba (Argentina)], E-mail: hcarreras@com.uncor.edu; Wannaz, Eduardo D.; Pignata, Maria L. [Departamento de Quimica, Instituto Multidisciplinario de Biologia Vegetal, IMBIV/CONICET-UNC, Facultad de Ciencias Exactas, Fisicas y Naturales, Universidad Nacional de Cordoba, Av. Velez Sarsfield 1611, Ciudad Universitaria, X5016GCA Cordoba (Argentina)

    2009-01-15

    The evaluation of metal contents in the environment is of vital importance for the assessment of human exposure. Thus the species Usnea amblyoclada, Ramalina celastri and Tillandsia capillaris were tested as bioaccumulators of transition metals in the urban area of Cordoba city, Argentina. The level of metals on biomonitors was compared to that of total deposition samples. All three species discriminated zones within the urban area of Cordoba city with different pollution levels; they revealed high levels of Zn in the downtown area and confirmed high levels of some transition metals in an industrial area. The correlation analysis revealed that the lichen R. celastri had the highest correlation rates with total deposition samples, suggesting it is a valuable biomonitor of atmospheric pollution. A significant relationship was also observed between respiratory diseases in children and the contents of metal accumulated in R. celastri and T. capillaris, indicating their usefulness when assessing human exposure to metals. - Metal accumulation in epiphytes is correlated with human respiratory diseases.

  16. Assessment of human health risk related to metals by the use of biomonitors in the province of Cordoba, Argentina

    International Nuclear Information System (INIS)

    Carreras, Hebe A.; Wannaz, Eduardo D.; Pignata, Maria L.

    2009-01-01

    The evaluation of metal contents in the environment is of vital importance for the assessment of human exposure. Thus the species Usnea amblyoclada, Ramalina celastri and Tillandsia capillaris were tested as bioaccumulators of transition metals in the urban area of Cordoba city, Argentina. The level of metals on biomonitors was compared to that of total deposition samples. All three species discriminated zones within the urban area of Cordoba city with different pollution levels; they revealed high levels of Zn in the downtown area and confirmed high levels of some transition metals in an industrial area. The correlation analysis revealed that the lichen R. celastri had the highest correlation rates with total deposition samples, suggesting it is a valuable biomonitor of atmospheric pollution. A significant relationship was also observed between respiratory diseases in children and the contents of metal accumulated in R. celastri and T. capillaris, indicating their usefulness when assessing human exposure to metals. - Metal accumulation in epiphytes is correlated with human respiratory diseases

  17. [From educational and health tourism for children to social tourism: vacation camps in the Province of Buenos Aires, Argentina].

    Science.gov (United States)

    Bruno, Perla

    2015-12-01

    The early twentieth century saw the rise of vacation camps for frail children as educational and health-giving experiences provided by medical and philanthropic organizations. This article analyzes some of these early experiences, seen here as the predecessors of social tourism, in the Province of Buenos Aires. A combination of written sources are examined, mainly institutional reports, periodicals such as the Monitor de la Educación Común - published by the Consejo Nacional de Educación (National Board of Education) - or laws, with photographs and plans for different examples. I argue that these buildings were both physical and cultural "brands" in the places where they were located, and that their architectural structure encapsulated ideas about leisure space and cures in unique natural environments.

  18. Thermal and mineral resource exploitation in Angaco department, province of San Juan, Argentina, as therapeutic and recreational resort area

    International Nuclear Information System (INIS)

    Herrera, M.; Martinez Iillanes, S.; Luccato, M; Herrera, C.

    2007-01-01

    In this paper the development of the Guayaupa thermal and mineral spring water intended as therapeutic and recreational resort area is presented. This area is located on the western piedmont of the Pie de Palo range, Department of Angaco, province of San Juan. From the analysis of the information related to geological, hydrogeological, hydrochemical, location, accessibility and climate aspects and also to the processing of the Landsat Tms satellite images to evaluate the geomorphologic and flora features an ordered diagnosis of the organization internal reality and its relation with the environment (FODA analysis) is presented. Internal strengths and weaknesses and the external factors that generate both opportunities and/or hazards were identified to define strategy guidelines that meet the legal and environmental standards in force. Results obtained from the strategic planning process conclude the availability and convenience of the project.(author)

  19. Archosauriform remains from the Late Triassic of San Luis province, Argentina, Quebrada del Barro Formation, Marayes-El Carrizal Basin

    Science.gov (United States)

    Gianechini, Federico A.; Codorniú, Laura; Arcucci, Andrea B.; Castillo Elías, Gabriela; Rivarola, David

    2016-03-01

    Here we present archosauriform remains from 'Abra de los Colorados', a fossiliferous locality at Sierra de Guayaguas, NW San Luis Province. Two fossiliferous levels were identified in outcrops of the Quebrada del Barro Formation (Norian), which represent the southernmost outcrops of the Marayes-El Carrizal Basin. These levels are composed by massive muddy lithofacies, interpreted as floodplain deposits. The specimens consist of one incomplete maxilla (MIC-V718), one caudal vertebra (MIC-V719), one metatarsal (MIC-V720) and one indeterminate appendicular bone (MIC-V721). The materials can be assigned to Archosauriformes but the fragmentary nature and lack of unambiguous synapomorphies preclude a more precise taxomic assignment. The maxilla is remarkably large and robust and represents the posterior process. It preserved one partially erupted tooth with ziphodont morphology. This bone shows some anatomical traits and size match with 'rauisuchians' and theropods. MIC-V719 corresponds to a proximal caudal vertebra. It has a high centrum, a ventral longitudinal furrow, expanded articular processes for the chevrons, a posteriorly displaced diapophysis located below the level of the prezygapophyses, and short prezygapophyses. This vertebra would be from an indeterminate archosauriform. MIC-V720 presents a cylindrical diaphysis, with a well-developed distal trochlea, which present resemblances with metatarsals of theropods, pseudosuchians, and silesaurids, although the size matches better with theropods. MIC-V721 has a slender diaphysis and a convex triangular articular surface, and corresponds to an indeterminate archosauriform. Despite being fragmentary, these materials indicate the presence of a diverse archosauriforms association from Late Triassic beds of San Luis. Thus, they add to the faunal assemblage recently reported from this basin at San Juan Province, which is much rich and diverse than the coeval paleofauna well known from Los Colorados Formation in the

  20. Private actions in the construction of a tourist destination. Boutique accommodation in Purmamarca, province of Jujuy, Argentina

    Directory of Open Access Journals (Sweden)

    Tania Porcaro

    2014-09-01

    Full Text Available Purmamarca, a small town located in Quebrada de Humahuaca (World Heritage, UNESCO, 2003, province of Jujuy, suffered a great transformation since the last years of the 20th century. This process is the result of touristic promotion within de province and private actions, both at regional and national scale, turning this town of about 500 inhabitants, into one of the main development poles of this activity. Even though Purmamarca still has a small stable population, its profile has completely changed, from low productivity peasant agriculture to a recreation and rest center for high level society from the largest cities in the country. This paper belongs to a series of studies published by its authors, who are interested in analysing material and cultural transformations of Purmamarca and Quebrada de Humahuaca, focusing on touristic processes. The objective of this article is to describe the development of new accommodation that influenced in the transformation of Purmamarca and to analyse their links to some of the new international tendencies in accommodation. In order to reach that goal, the characteristics and evolution of Purmamarca’s accommodation were studied, through the use of various sources, such as accommodation and tourism authorities websites, touristic brochures, information collected through local surveys and interviews, statistic information and bibliographic resources. The results of this research indicate that the growth in the amount of accommodation, since the beginning of 2000, is high for this small town. These accommodations are characterized by little capacity, personalized attention, exclusive services, and are directed to a select audience, many of them being identified as boutique hotels. These accommodations make their mark in Purmamarca and participate in the transformation processes of this town.

  1. Riesgo sanitario de la población vulnerable expuesta al arsénico en la provincia de Buenos Aires, Argentina Health risk for the vulnerable population exposed to arsenic in the province of Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Julio A. Navoni

    2012-01-01

    Full Text Available OBJETIVO: Analizar la concentración de arsénico en agua recolectada en localidades de la provincia de Buenos Aires, Argentina, y su relación epidemiológica con factores de susceptibilidad y patologías asociadas. MÉTODOS: Se cuantificó la concentración de arsénico en 152 muestras provenientes de 52 localidades de Buenos Aires durante el período 2003-2008 mediante generación de hidruros-espectrofotometría de absorción atómica. Se construyó un índice compuesto de salud (ICS considerando el contenido de arsénico, el porcentaje de hogares con necesidades básicas insatisfechas (NBI y el de viviendas sin acceso al agua de red. A partir del ICS se definieron zonas de riesgo que fueron asociadas con la mortalidad por tumores malignos relacionados con el arsénico. RESULTADOS: Las concentraciones de arsénico se ubicaron en un rango amplio, desde 0,3 hasta 187 µg/L, con una mediana de 40 µg/L. El 82% de las muestras presentaron niveles de arsénico superiores al valor límite aceptable de 10 µg/L, y más de la mitad de ellas provenían de agua de red. La mortalidad promedio (defunciones/100 000 habitantes por tumores en los departamentos estudiados fue mayor en los varones que en las mujeres: vías respiratorias (310 frente a 76, vías urinarias (44 frente a 11 y piel (21 frente a 11, respectivamente. Las regiones de mayor concentración de arsénico y pobreza, junto con la falta de agua de red, presentaron un riesgo relativo incrementado de 2 a 4 veces. CONCLUSIONES: La caracterización realizada a través del índice compuesto de salud sintetizó el riesgo sanitario de la exposición al arsénico de la población con niveles de carencia socioeconómica de una amplia región de la provincia de Buenos Aires.OBJECTIVE: To analyze the concentration of arsenic in water collected in localities of the province of Buenos Aires, Argentina, and the epidemiological relationship of that concentration to factors of susceptibility and associated

  2. Geology and metallogeny of the volcanic complex of Rio Blanco Ullum. Province of San Juan. Republica Argentina

    International Nuclear Information System (INIS)

    Mendoza, N.; Weidmann, N.; Puigdomenech, H.; Weidmann, R.

    2007-01-01

    Preliminary results of a research carried out at the Complejo Rio Blanco de Ullum, San Juan. Argentina are summarized in the present paper. These studies are focused on geological and metallogenic features o f this unit. The study area is located 20 km. WNW of San Juan city with geographic coordinates of 31grades 30' South latitude and 68 grades 52' West longitude. The older rocks aotcroping in the area correspond to limestones of Ordovician San Juan Formation, the chronologic succession continues with sales and siltstones of Silurian Tambolar Formation, pelites and subgraywackes of Devonian Punta Negra Formation and finally a 1500 m thick package of piroclastics and sediments of Albarracin Formation of Tertiary age. Albarracin Formation is composed pf a Basal Member (sandstones and stilstones), a Tuffaceous Member (tuffs, tuffites and oligomictic breccia s with conglomerate interbed dings in the upper part) and a Conglomeratic Member (polimictic para conglomerates). According to piroclastics facies, relationships and spreading area of piroclastics deposits a c olapsed dome and avalanche model is proposed to be the main process for the piroclastics package outcropping in the area.Sedimentary and piroclastics rocks are intruded by five sub volcanic units as noted by Leveratto (1968) which are composed by different lithologies such as: Altered Da cite - Rhyolite, Ullum Da cite, Cerro Blanco de Zonda Andesite, Ullum Andesite and Hybrid Andesite.Detailed work on alteration assemblages and metallogenic features in the southwestern sector of the Complejo resulted in the identification of three alteration zones with characteric features of potassic, argillic and propyllitic signature. (author)

  3. A Maastrichtian microbial reef and associated limestones in the Roca Formation of Patagonia (Neuquén Province, Argentina

    Directory of Open Access Journals (Sweden)

    W. Kiessling

    2006-08-01

    Full Text Available We describe a small microbial reef and associated limestones occurring in a Maastrichtian transgressive succession of mixed carbonate-siliciclastic lithologies at Sierra Huantraico near Chos Malal (Neuquén, Argentina. Strontium isotope data suggest that the reef is of earliest Maastrichtian age. The small reef (0.8 m thick, 2 m wide is mostly composed of peloidal bindstone, dense stromatolite-cement crusts and thrombolite. Except for some ostracods, no metazoan fossils were found in the reef structure, although the majority of peloids are fecal pellets, probably of larger crustaceans. Small foraminifers with calcite tests and probable green algae have also been noted. Sedimentological data and fossils within and immediately above the reef suggest that the reef was formed in a transgressive systems tract under freshwater to brackish-water conditions. Limestones above the reef are serpulid-bryozoan packstones and intraclast-ooid grainstones. These limestones yield a mixture of typical non-tropical (common serpulids and bryozoans and typical tropical aspects (common dasycladaceans and ooids. This mosaic is explained by salinity fluctuations, which in our case dominate over temperature in determining the grain associations. Wir beschreiben ein kleines mikrobielles Riff, das in der Sierra Hunatraico (Neuquén, Argentinien in einer transgressiven, gemischt siliziklastisch-kalkigen Abfolge gefunden wurde. Nach Strontiumisotopen-Datierung ist das Riff in das unterste Maastrichtium zu stellen. Das kleine Riff (0,8 m Mächtigkeit, 2 m Breite besteht überwiegend aus peloidalem Bindstone, dichten Stromatolith-Zement-Krusten und Thrombolith. Mit Ausnahme von Ostrakoden konnten keine Metazoen in der Riffstruktur nachgewiesen werden, obwohl die Mehrzahl der Peloide als Kotpillen zu interpretieren sind, die vermutlich auf größere Krebse zurückgehen. Kleine Foraminiferen und mögliche Grünalgen sind die einzigen zusätzlich nachweisbaren Eukaryoten

  4. First record of Nopachtus coagmentatus (Xenarthra, Glyptodontidae for the Catamarca Province, Argentina. Revision of the genus Nopachtus

    Directory of Open Access Journals (Sweden)

    M. Zamorano

    2017-09-01

    Full Text Available Nopachtus coagmentatus was recognized by Ameghino in 1888. Holotype comes from Brochero Formation (Montehermosan - Chapadmalalan [early Pliocene - late Pliocene], near to Villa Cura Brochero (Córdoba. First find of this species for the Catamarca Province is reported. Remains found are described, its provenance detailed and the corresponding stratigraphic log is presented. The mentioned material, came from Salicas Formation, cropping out in the paraje Suri Yaco, consists of 14 osteoderms of the dorsal region of the carapace attributed to N. coagmentatus, 12 complete and 2 fragmented corresponding to the media and posterodorsal region of the carapace. These osteoderms present a central figure surrounded by two row of peripheral figures, and figures that would correspond to a third row, always incomplete. The first row has between 10 and 12 figures and the second between 19 and 22; the figures are pentagonal or, mainly, hexagonal. In turn, all specimens known today for this genus, that included two species, is revised. Until this communication, only two reliable records, and several doubtful were recognized for N. coagmentatus; while for N. cabrerai Zamorano, Scillato-Yané, Gonzalez Ruiz & Zurita only the holotype was given to known.

  5. Petrogenesis of volcanic rocks that host the world-class Agsbnd Pb Navidad District, North Patagonian Massif: Comparison with the Jurassic Chon Aike Volcanic Province of Patagonia, Argentina

    Science.gov (United States)

    Bouhier, Verónica E.; Franchini, Marta B.; Caffe, Pablo J.; Maydagán, Laura; Rapela, Carlos W.; Paolini, Marcelo

    2017-05-01

    We present the first study of the volcanic rocks of the Cañadón Asfalto Formation that host the Navidad world-class Ag + Pb epithermal district located in the North Patagonian Massif, Patagonia, Argentina. These volcanic and sedimentary rocks were deposited in a lacustrine environment during an extensional tectonic regime associated with the breakup of Gondwana and represent the mafic to intermediate counterparts of the mainly silicic Jurassic Chon Aike Volcanic Province. Lava flows surrounded by autobrecciated carapace were extruded in subaerial conditions, whereas hyaloclastite and peperite facies suggest contemporaneous subaqueous volcanism and sedimentation. LA-ICPMS Usbnd Pb ages of zircon crystals from the volcanic units yielded Middle Jurassic ages of 173.9 ± 1.9 Ma and 170.8 ± 3 Ma. In the Navidad district, volcanic rocks of the Cañadón Asfalto Formation show arc-like signatures including high-K basaltic-andesite to high-K dacite compositions, Rb, Ba and Th enrichment relative to the less mobile HFS elements (Nb, Ta), enrichment in light rare earth elements (LREE), Ysbnd Ti depletion, and high Zr contents. These characteristics could be explained by assimilation of crustal rocks in the Jurassic magmas, which is also supported by the presence of zircon xenocrysts with Permian and Middle-Upper Triassic ages (281.3 Ma, 246.5, 218.1, and 201.3 Ma) and quartz xenocrysts recognized in these volcanic units. Furthermore, Sr and Nd isotope compositions suggest a contribution of crustal components in these Middle Jurassic magmas. High-K basaltic andesite has initial 87Sr/86Sr ratios of 0.70416-0.70658 and ξNd(t) values of -5.3 and -4. High-K dacite and andesite have initial 87Sr/86Sr compositions of 0.70584-0.70601 and ξNd(t) values of -4,1 and -3,2. The range of Pb isotope values (206Pb/204Pb = 18.28-18.37, 207Pb/204Pb = 15.61-15.62, and 208Pb/204Pb = 38.26-38.43) of Navidad volcanic rocks and ore minerals suggest mixing Pb sources with contributions of

  6. Early breeding of buffalo heifers: Mineral supplementation and its effects on development and pregnancy rates in the province of Corrientes, Argentina

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    E. Mollica

    2010-02-01

    Full Text Available Two commercial mineral supplement formulae were used to evaluate their effects on body weight, average daily gain and reproduction at first breeding in seventy buffalo heifers, between 14 and 16 months old. Pasture from this area of the province of Corrientes, Argentina, is known to be phosphorus and sodium deficient. The experiment began on 26th December 2005 and ended on 9th August 2006. On 15 th May 2006 two bulls were introduced in each group for 59 days. Treatments were: (a usual mineral supplement (US - Ca=12% and P=6%; (b a mineral quelated supplement (QS, Tortuga™ - Ca=5,7%, P=4,1%, Na, K, Co, Cu, Fe, Se, Zn, N. Minerals were supplied every week ad libitum. Animals were kept in separate paddocks and were rotated every month to minimize the paddock effect. Body weight, jugular blood and stool samples were taken every month. Blood serum was assayed for mineral and progesterone (P4 concentration. Crude protein and dry matter digestibility were estimated on faecal samples by NIRS scanning. The weight at weaning, the initial and the final live weight for the breeding period were: 224.6 and 230.7, 322.2 and 321.7 and 342.8 and 326.6 kg. in QS and US groups, respectively. Live weight was increased by QS supplement (Table 1. Pregnancy rates, determined by transrectal ultrasound, were 60.0% and 17.3 % (P<0.05 for QS and US groups, respectively. It is concluded that QS supplement increased the body development and the early pregnancy rates in buffalo heifers. Further investigation is needed to confirm these findings.

  7. [Population demography in Rhinella arenarum (Anura: Bufonidae) and Physalaemus biligonigerus (Anura: Leiuperidae) in agroecosystems in the province of Córdoba, Argentina].

    Science.gov (United States)

    Bionda, Clarisa; Lajmanovich, Rafael; Salas, Nancy; Martino, Adolfo; di Tada, Ismael

    2013-09-01

    The advancing agricultural frontier has led to an important loss of natural habitats, with significant consequences for biodiversity. The demography for two species of anurans, Physalaemus biligonigerus and Rhinella arenarum, both associated with agricultural systems in the central region of the C6rdoba Province, were analyzed and compared in this study. Four sites were sampled: three agroecosystems with different alteration degrees (C1, C2 and SM1) and a fourth site not cultivated (SM2). The sampling was conducted during two reproductive periods, from September 2008 to April 2009 and September 2009 to April 2010. Individuals were captured using live pitfall traps for the metamorphic, juveniles and adults; and visual encounter survey, for the capture of eggs and larvae. With the abundance data, the survival for each age class was estimated using the KNM method (Kiritani Nakasuki Manly). With survival rates and fertility population, Leslie matrices were elaborated to obtain a quantitative projection of the population size. Altered environments showed lower eggs and larvae survival. Population projections were favorable in the site SM2 and were less favorable and a tendency to extinction, in sites dominated by crops. This study showed that the agroecosystems of this region are possibly inhospitable environments for reproduction and survival of the species studied. The aquatic stages in the life cycle of both species would be the more affected, since water bodies deterioration is present or may occur in those areas. We can recognize species-specific effects of agricultural ecosystems; P. biligonigerus was the most affected species, possibly because of their life histories and habitat requirements. We suggested that environmental degradation caused by the cropland in the central region of Argentina would impact on the demographics of the anuran populations in the area.

  8. Temporal Dynamics and Spatial Patterns of Aedes aegypti Breeding Sites, in the Context of a Dengue Control Program in Tartagal (Salta Province, Argentina)

    Science.gov (United States)

    Espinosa, Manuel; Weinberg, Diego; Rotela, Camilo H.; Polop, Francisco; Abril, Marcelo; Scavuzzo, Carlos Marcelo

    2016-01-01

    Background Since 2009, Fundación Mundo Sano has implemented an Aedes aegypti Surveillance and Control Program in Tartagal city (Salta Province, Argentina). The purpose of this study was to analyze temporal dynamics of Ae. aegypti breeding sites spatial distribution, during five years of samplings, and the effect of control actions over vector population dynamics. Methodology/Principal Findings Seasonal entomological (larval) samplings were conducted in 17,815 fixed sites in Tartagal urban area between 2009 and 2014. Based on information of breeding sites abundance, from satellite remote sensing data (RS), and by the use of Geographic Information Systems (GIS), spatial analysis (hotspots and cluster analysis) and predictive model (MaxEnt) were performed. Spatial analysis showed a distribution pattern with the highest breeding densities registered in city outskirts. The model indicated that 75% of Ae. aegypti distribution is explained by 3 variables: bare soil coverage percentage (44.9%), urbanization coverage percentage(13.5%) and water distribution (11.6%). Conclusions/Significance This results have called attention to the way entomological field data and information from geospatial origin (RS/GIS) are used to infer scenarios which could then be applied in epidemiological surveillance programs and in the determination of dengue control strategies. Predictive maps development constructed with Ae. aegypti systematic spatiotemporal data, in Tartagal city, would allow public health workers to identify and target high-risk areas with appropriate and timely control measures. These tools could help decision-makers to improve health system responses and preventive measures related to vector control. PMID:27223693

  9. Prevalencia de infeccion por HTLV-I/II en donantes de sangre de la provincia de Santa Fe, Argentina Prevalence of HTLV-I/II infection among blood donors in Santa Fe Province, Argentina

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    Roque O. Brun

    2004-04-01

    Full Text Available Subsecuentemente a que en 1997 el Programa Nacional de SIDA implementó un Programa deVigilancia Epidemiológica a escala nacional, se comenzaron a detectar anticuerpos anti-HTLV-I/II en donantes de sangre de la Provincia de Santa Fe. En base a ese hallazgo inicial, se consideró pertinente estimar la seroprevalencia de HTLV-I/II en donantes santafecinos en el curso de los 4 años siguientes. Así, desde 1997 hasta 2002, se estudiaron 9425 muestras provenientes de 17 de los 19 departamentos de la Provincia. Del total de muestras, 38 resultaron reactivas por técnicas de tamizaje, y de ellas 18 fueron confirmadas por western blot (WB. De esas muestras, 10 fueron HTLV-I/II seropositivas con una prevalencia final de 0.1% (10/9425, en tanto que 7 resultaron indeterminadas y 1 negativa. De las seropositivas, 2 (0.02 % eran HTLV, 3 (0.03 % HTLV-I, y 5 (0.05 % HTLV-II. Cabe destacar que por primera vez se constató la presencia de infección por HTLV-I/II en donantes de sangre de Santa Fe, y con una prevalencia mayor a las referidas para donantes de sangre de áreas no endémicas de Argentina. Estos datos fundamentan la necesidad de un screening sistemático para la infección por HTLV-I/II mediante normas regulatorias en bancos de sangre de esta provincia.Subsequent to the National Epidemiologic Surveillance Program developed in 1997 by the National AIDS Program, anti-HTLV-I/II antibodies among blood donors in Santa Fe Province started to be detected. On the basis of this initial finding, it was regarded of interest to evaluate the true HTLV-I/II seroprevalence in this population during a four-year survey. Thus, from 1997 up to 2002, 9425 samples were studied from 17 out of the 19 provincial departments. Out of the total sampling, 38 proved reactive by agglutination techniques, 18 of which were confirmed by western blot (WB. Out of the latter, 10 were HTLV-I/II seropositive with a final prevalence of 0.1% (10/9425, whereas 7 were indeterminate and 1

  10. Leaf anatomy of medicinal shrubs and trees from Misiones forest of the Paranaense Province (Argentina: Part 2 Anatomía foliar de arbustos y árboles medicinales de la Selva Misionera de la provincia Paranaense (Argentina: Parte 2

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    Ana M. Arambarri

    2008-07-01

    Full Text Available The present paper contains the study of the second part of medicinal shrubs and trees from Paranaense province. Forty five species of shrubs and trees belonging to 29 families inhabiting Misiones forest of the Paranaense biogeographic province (Argentina have been cited with medicinal properties. The work provides illustrations of diagnostic characters and conclusions of the main botanical differential traits, such as the presence of crystaliferous epidermis (e.g. Trixis divaricata subsp. divaricata; stomata and trichomes types (e. g. ciclocytic stomata in Pilocarpus pennatifolius and scale peltate trichomes in Tabebuia heptaphylla; midvein transection outlines (e.g. midvein convex and keel-shaped on the adaxial side in Schinus weinmanniifolia; presence and types of crystals (e.g. crystal sand in Cordia ecalyculata, raphides in Psychotria carthagenensis. This paper also gives an ecological interpretation of the species studied which shows predominantly a combination of mesomorphic (e.g. hypostomatic leaves, dorsiventral mesophyll and xeromorphic leaf traits (e.g. thick cuticle, abundant sclerenchyma, multilayered epidermis, mesophyll formed exclusively by palisade parenchyma, multilayered hypodermis, presence of sclereids. Only two species (Ilex paraguariensis and Manihot grahamii have mesomorphic (e.g. hypostomatic leaves, dorsiventral mesophyll and hygromorphic leaf characters (e.g. epidermis glabrous. Finally, the work provides a key to distinguish 107 medicinal shrubs and trees from the Paranaense biogeographic province (Part 1: Gallery forests and Part 2: Misiones forest that permit identified species using anatomy leaf characteristics.El presente trabajo corresponde a la segunda entrega del estudio de arbustos y árboles medicinales de la provincia biogeografica Paranaense. En esta parte, se analizaron 45 especies contenidas en 29 familias que habitan la Selva Misionera y han sido citadas con propiedades medicinales. El trabajo se acompa

  11. Relationship between geohydrology and Upper Pleistocene-Holocene evolution of the eastern region of the Province of Buenos Aires, Argentina

    Science.gov (United States)

    Capítulo, Leandro Rodrigues; Kruse, Eduardo E.

    2017-07-01

    The Upper Pleistocene-Holocene geological evolution, which is characterized by its landscape-forming energy and is related to geological and geomorphological complexity, has an impact on the groundwater dynamics of coastal aquifers. The geological configuration of a sector of the east coast of the Province of Buenos Aires was analyzed, as well as its connection with the geological and geomorphological history of the region during the Late Pleistocene and Holocene, and its influence on the regional and local geohydrological behaviour. This analysis was based on the application of the concept of hydrofacies. Boreholes were drilled and sampled (with depths of up to 40 m), and vertical electrical sounding, electrical tomography and pumping tests were undertaken. The description of the cutting samples by means of a stereo microscope, the interpretation of satellite images, and the construction of lithological and hydrogeological profiles and flow charts were carried out in the laboratory, and then integrated in a GIS. The identification of the lithological units and their distribution in the area allowed the construction of an evolutionary geological model for the Late Pleistocene and Holocene. Three aquifer units can be recognized: one of Late Pleistocene age (hydrofacies E) and the other two of Holocene age (hydrofacies A and C); their hydraulic connection depends on the occurrence and thickness variation of the aquitard units (hydrofacies B and D). The approach adopted allows the examination of the possibilities for groundwater exploitation and constitutes an applied conceptual framework to be taken into consideration when developing conceptual and numerical models at the local and regional scales.

  12. Wind erosion risk in the southwest of Buenos Aires Province, Argentina, and its relationship to the productivity index

    Science.gov (United States)

    Silenzi, Juan C.; Echeverría, Nora E.; Vallejos, Adrián G.; Bouza, Mariana E.; De Lucia, Martín P.

    2012-01-01

    Wind erosion risk (WER) for soils of each municipality in the southwest (SW) of Buenos Aires Province (10,491,172 ha) was determined using the wind erosion equation (WEQ) model. WER results from multiplying the soil erodibility index (" I") of the soil by the climatic factor ( C). WER (Mg ha -1 year -1) of each municipality was: Bahía Blanca: 22.4, Coronel Dorrego: 18.6, Coronel Pringles: 4.5, Coronel Rosales: 48.2, Coronel Suárez: 4.5, Guaminí: 3.0, Patagones: 104.6, Puan: 12.2, Saavedra: 3.0, Tornquist: 6.8, and Villarino: 31.7. The maximum weighted average of " I" (Mg ha -1 year -1) corresponded to Coronel Rosales (87.6), Patagones (87.2), Villarino (85.7), Puan (67.9); Guaminí (59.6), Coronel Dorrego (53.1), and Bahía Blanca (39.3); the remaining municipalities ranged between 34.9 and 32.1 Mg ha -1 year -1. The highest C (%) corresponded to Patagones (120), Bahía Blanca (57), Coronel Rosales (55), Villarino (37), Coronel Dorrego (35), Tornquist (21), and Puan (18); for the remaining municipalities it was 14%. The productivity index (PI) is known to establish a numerical value of the productive capacity of lands. The relationship between WER and PI, weighted averages, in all the studied municipalities was fitted by means of a linear model, WER (Mg ha -1 year -1) = 95.23 - 2.09 * PI (%) ( R2 = 66%), and a second-order polynomial model, WER (Mg ha -1 year -1) = 139.41 - 5.86 * PI (%) + 0.07 * PI 2 (%) ( R2 = 74%). No statistically significant relationship was found between WER and PI for each municipality.

  13. Algal and Cyanobacterial communities in two rivers of the province of San Luis (Argentina subjected to anthropogenic influence

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    Jorgelina Daruich

    2013-03-01

    Full Text Available AIM: The use of biological indicators of pollution has increased in recent years as an alternative to the monitoring of water quality. Phytoplankton community selectively respond to different anthropogenic disturbances, such as water dams and the increase of nutrients coming from city centers, which leads to the eutrophication of the aquatic environment. The objective of this work was to evaluate the composition and the structure of the algal and Cyanobacterial communities in order to prove human influences by the presence of reservoirs with some degree of eutrophication and the impact of urbanization in two rivers at the Bebedero basin in San Luis province (Argentine. METHODS: Four sites were sampled: two of them were placed before dams and villages (V1 and (P1 and two after them (V2 and (P2. Each site was visited in every season of the year: summer, autumn, winter and spring. Qualitative and semi-quantitative phytoplankton samples were taken, and the frequency of occurrence was determined. Variations between pairs of sampling stations were analyzed through the Jaccard similarity and complementarity indices. RESULTS: Ninety two taxa were identified, of which diatoms were the most frequent. The most affected station was P2 with high abundance, less diversity and equitability, whereas the species more tolerant to the presence of organic matter were Melosira varians, Navicula tripunctata, Oscillatoria limosa, Gomphonema parvulum and Coelastrum microporum, and some species of euglenophytas. CONCLUSION: Therefore, the structure and composition of the algal and Cyanobacterial communities allowed us to identify sections more sensitive to human-induced alterations.

  14. A geothermal resource in the Puna plateau (Jujuy Province, Argentina): New insights from the geochemistry of thermal fluid discharges

    Science.gov (United States)

    Peralta Arnold, Yesica; Cabassi, Jacopo; Tassi, Franco; Caffe, Pablo; Vaselli, Orlando

    2017-04-01

    Several hydrothermal mineralization and thermal fluid discharges are distributed in the high altitude Puna plateau at the eastern border of the Central Volcanic Zone of the Andes in the Jujuy Province, a region where volcanic explosive activity developed from Oligocene-Miocene to Neogene produced giant calderas and huge ignimbrite deposits. This study presents the geochemical and isotopic composition of thermal fluids discharged from Granada, Vilama, Pairique, Coranzulì and Olaroz zones, which are located between S 22°20'- 23°20' and W 66°- 67°. This aim is to provide insights into the physicochemical features of the deep fluid circulating system in order to have a preliminary indication about the geothermal potential in this area. The occurrence of partially mature Na+-Cl- waters suggests that a deep (>5,000 m b.g.l.) hydrothermal reservoir, hosted within the Paleozoic crystalline basement, represents the main fluid source. Regional tectonics, dominated by S-oriented faulting systems that produced a horst and graben tectonics, as well as NE-, NW- and WE-oriented transverse structures, favour the uprising of the deep-originated fluids, including a significant amount (up to 16%) of mantle He. The dry gas phase mainly consists of CO2 mostly produced from subducted C-bearing organic-rich material. The interaction between meteoric water and Cretaceous, Palaeogene to Miocene sediments at shallow depth gives rise to relatively cold Na+-HCO3-type aquifers. Dissolution of evaporitic surficial deposits (salares), produced by the arid climate of the region, strongly affects the chemistry of the thermal springs in the peripheral zones of the study area. Geothermometry in the Na-K-Ca-Mg system suggests equilibrium temperatures up to 200 °C for the deep aquifer, whereas the H2 geothermometer equilibrates at lower temperatures (from 105 to 155 °C), likely corresponding to those of the shallower aquifer. Although the great depth of the main fluid reservoir represents a

  15. Vigilancia epidemiológica de enfermedades transmitidas por alimentos en la provincia de Río Negro, Argentina, 1993-2001 Surveillance of foodborne diseases in the Province of Rio Negro, Argentina, 1993 - 2001

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    Silvana Di Pietro

    2004-04-01

    Full Text Available Se describen 39 brotes de enfermedades transmitidas por alimentos que afectaron a 958 personas en la provincia de Río Negro, Argentina, en el período 1993- 2001. Se identifican los agentes causales, los alimentos involucrados, los sitios de ocurrencia, los factores de riesgo involucrados y los mecanismos de notificación empleados. Salmonella spp (38%, Trichinella spiralis (15%, Escherichia coli (13% y Staphylococcus aureus (15% resultaron los agentes más frecuentes en los brotes. Salmonella spp. también produjo el mayor número de casos (52%. Los principales alimentos involucrados resultaron cárneos (36%, quesos (10%, fiambres y sándwiches (10%, postres (10% y helados (8%. El mayor número de casos, por su parte, fue causado por la ingestión de helados (37%. Con relación al origen de los alimentos, 41% de los brotes fueron causados por comidas elaboradas en los domicilios, 23% en establecimientos comerciales, 13% en fiestas familiares, 8% en fiestas comunitarias y 8% en restaurantes de hoteles. En el 28% de los brotes fue identificado el agente etiológico por análisis epidemiológico exclusivamente, en el 64% se logró el aislamiento del agente, mientras que en el 8% de los casos no se logró el diagnóstico definitivo. Se analiza el valor de la encuesta epidemiológica en los estudios de enfermedades transmitidas por alimentos, la necesidad de fortalecer el sistema de notificación médica de casos y brotes y la importancia de las buenas prácticas en la manipulación de alimentos.A total of 39 outbreaks of foodborne diseases affecting 958 people in the province of Rio Negro, Argentina between 1993 and 2001 are described and evaluated. The main causal agents were identified involving food, sites of occurrence, risk factors and notification system used. Salmonella spp (38%, Trichinella spiralis (15%, Escherichia coli (13% and Staphylococcus aureus (15% were the most frequent agents present in outbreaks. Salmonella spp produced the

  16. Dieta y ecomorfología de la ictiofauna del arroyo Manantiales, provincia de Buenos Aires, Argentina Diet and ecomorphology of the ichthyofauna of Manantiales stream, Buenos Aires province, Argentina

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    Eduardo M Fernández

    2012-06-01

    Full Text Available Se estudio la correlación entre dieta y morfología de 19 especies de peces del arroyo Manantiales, cabecera del río samborombón, provincia de Buenos Aires, Argentina. Las especies fueron clasificadas en cuatro grupos tróficos: carnívoros, omnívoros, insectívoros y detritívoros- alguívoros. Se analizaron 12 atributos ecomor-fológicos relacionados con el uso del hábitat y la alimentación con el fin de distinguir patrones ecomorfológicos de las especies y de las especies con el alimento consumido. Se utilizaron técnicas de análisis univariado y multivariado para determinar agrupamientos de especies utilizando los atributos ecomorfológicos y la dieta como descriptores. Los carnívoros se relacionaron con un buen desarrollo de cabeza, boca, aletas caudal y pectoral; y en general con cuerpos comprimidos. Los omnívoros constituyeron un grupo más heterogéneo. Las formas nectónicas de este grupo se relacionaron con un cuerpo comprimido, ojos laterales y tamaño relativamente pequeño de las aletas pectorales y aleta caudal; las formas nectobentónicas se relacionaron con boca pequeña, cuerpo fusiforme y pedúnculo caudal largo; y las formas bentónicas, con cuerpo deprimido, ojos de posición dorsal, boca ínfera y tubo digestivo largo. La única especie nectónica consumidora de insectos sobre la superficie se caracterizó por un cuerpo fuertemente comprimido, ojos laterales, aleta caudal grande y boca grande orientada hacia arriba. Los detritívoros-alguívoros presentaron un tubo digestivo largo, boca ínfera o terminal y aletas caudales largas. La relación significativa dieta-ecomorfología permite sostener que peces de dieta similar convergen hacia atributos ecomorfológicos comunes.The present study addresses the correlation between diet and morphology of 19 fish species that inhabit the Manantiales stream at the headwaters of the samborombón river, Buenos Aires province, Argentina. The species were classified into four

  17. Estudio epidemiológico de los casos de triquinelosis registrados en la provincia de Santa Fe, Argentina, 1998-2009 Epidemiological study of recorded trichinosis cases in Santa Fe Province, Argentina, 1998-2009

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    Gabriel J. Sequeira

    2013-05-01

    characterize recorded trichinosis cases and outbreaks in Santa Fe Province, Argentina, from 1998 to 2009 from epidemiological, clinical, and laboratory viewpoints. METHODS: An analysis was conducted of 1 519 epidemiological records of persons who had signs and symptoms compatible with trichinosis in Santa Fe Province in the period 1998-2009. A descriptive statistical analysis of information in epidemiological records and of clinical and laboratory results, as well as a bifactorial analysis of possible associations with epidemiological and environmental factors were also carried out. RESULTS: Trichinosis symptoms were found in 1 276 cases; 372 met the clinical case definition and 224 samples were positive by indirect immunofluorescence, independent of their clinical case classification. There were 27 outbreaks that involved 1 157 cases identified in eight departments, with greater frequency in the province's center and south. Annual distribution of epidemiologically associated cases was heterogeneous, with greater frequency in the period 2000-2003 and in the months of August to October. Probability of becoming sick was greater with consumption of products from informal sources (OR = 3.69; P = 0.014 and in rural areas (OR = 1.799; P = 0.011. Disease incubation period (median was 12 days. The risk of becoming sick was 2.06 times greater in persons who ate meat or ate pork by-products than in those who did not. CONCLUSIONS: The greatest number of outbreaks occurred in departments that were more populous and where pork production was greater. Specific actions should be designed for prevention and control of the disease in those departments. Epidemiological risk analysis should be considered in evaluating, managing, and communicating trichinosis health risks.

  18. Incidence and control of bovine gastrointestinal nematodes in the East of the Province of La Pampa, Argentina

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    LORDI, L.V

    2011-04-01

    Full Text Available A cross-sectional survey including 350 stocking farms and bovine establishments that operate the full cycle (FC as well as fattening operations (IN was carried out in the East of the Province of La Pampa to record cases of verminous gastroenteritis (VGE as well as control and management practices applied by the farmers.Farms were stratified by herd size into three categories: more than 900 (G, 900-500 (M and 500-300 (P bovines. Samples from each category were collected at random. 33% of the farmers surveyed indicated that their animals had been affected by clinical cases of VGE with morbidity and mortality rates between 11.2% and 0.42%, respectively. More cases of VEG (P<0.004, X2 8.33 occurred in herds on FC establishments (37% that on fattening farms (IN (21%; the relative risk (RR was 1.77 (95%; IC 1.18 – 2.74 but no differences were noted between categories. Ninety-four percent of the farmers use avermectins alone (AVM (71% or combined with benzimidazole (BZD, 20% or levamisole (3%; 6% use BZD alone. The percentage of use of other drugs in addition to AVM increases (P<0.005, X2 7.80 with larger herds (G: 32%, M: 21%, P: 15%. Of the treatments, 95.2% include avermectins alone in injectable form (82.6% or combined with oral (16.5% or intraruminal (0.9% forms. Approximately 2.42 treatments per year are performed and are more prevalent (P<0.01 in G and IN farms (2.7 treatments. 35% of the farmers deworm twice a year, in the fall (between March and July and in late winter-spring (between August and October-, 16% deworm only once (between February and April and 12% twice (between late summer and early winter. 18% of the farmers (G: 24%, M: 18%; P: 13% prevent VGE losses by administering treatment at a specific time of the year. 60% of the farmers consult the veterinarian although only 29% perform an egg count (hpg although differences (P<0.001 between herd sizes were noted: G: 41%, M: 26%; P 19%. 12% (FC 10%; IN 16%. 12% of the farmers (FC 10

  19. Condiciones de sostenibilidad de la ciudad compacta: análisis de superficies expuestas a la radiación y sombras arrojadas en la Ciudad de Mendoza

    OpenAIRE

    Ganem, Carolina; Balter, Julieta; Coch Roura, Helena

    2009-01-01

    ¿Podemos decir que toda ciudad compacta es una ciudad sostenible? ¿Cuáles son los parámetros que definen a una ciudad compacta sostenible? El objetivo de este trabajo es determinar las características de la ciudad compacta tal y como está creciendo hoy mediante el estudio en profundidad de una ciudad en plena densificación, la ciudad de Mendoza en la República Argentina. Se parte del estudio de los diferentes códigos de edificación vigentes desde su fundación y las restricciones y oportunida...

  20. LINAJES MASCULINOS Y SU DIVERSIDAD EN COMUNIDADES WICHÍ DE FORMOSA / Male lineages diversity in Wichí communities of Formosa province, Argentina

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    Virginia Ramallo

    2009-12-01

    Full Text Available Normal 0 21 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabla normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;}  Durante el año 2005, se realizaron dos viajes de campaña a comunidades Wichí cercanas a las localidades de Ingeniero Juárez y Laguna Yema (provincia de Formosa, Argentina, como parte del proyecto multidisciplinario “De las historias étnicas a la prehistoria en el Gran Chaco”. Partiendo del planteo metodológico de unidad poblacional, se obtuvieron datos genéticos en 93 muestras utilizando marcadores binarios y microsatélites del cromosoma Y, determinando haplogrupos y haplotipos masculinos. El haplogrupo Q1a3a, natural del continente americano, resultó mayoritario en ambas localidades (72,7 % y 81,6 %. Los linajes moleculares se compararon con la diversidad de apellidos registrada y las posibles vinculaciones entre las comunidades Wichís se analizaron  por redes “median joining”, encontrando una variabilidad de linajes coherente con la distribución de las parcialidades del “complejo étnico Wichí” propuesto por Braunstein.   Palabras claves: Herencia genética, cromosoma Y, PCR, SNP, STR   Abstract During the year 2005, as part of the multidisciplinary project “Of the ethnic histories to the prehistory of the Gran Chaco”, two field trips to the wichi communities nearing the locations of Ingeniero Juárez and Laguna Yema (Formosa province, Argentina were made. From the methodological proposal of a population unit, genetic data in 93 samples, employing binary markers and microsatellites of the Y-chromosome were obtained, determining male

  1. Fish faunas from the Late Jurassic (Tithonian) Vaca Muerta Formation of Argentina: One of the most important Jurassic marine ichthyofaunas of Gondwana

    Science.gov (United States)

    Gouiric-Cavalli, Soledad; Cione, Alberto Luis

    2015-11-01

    The marine deposits of the Vaca Muerta Formation (Tithonian-Berriasian) houses one of the most diverse Late Jurassic ichthyofaunas of Gondwana. However, most of the specimens remain undescribed. Jurassic fishes have been recovered from several localities at Neuquén Province (i.e., Picún Leufú, Plaza Huincul, Cerro Lotena, Portada Las Lajas, Los Catutos, and Arroyo Covunco) but also from Mendoza Province (i.e., La Valenciana, Los Molles, and Arroyo del Cajón Grande). Presently, the fish fauna of Los Catutos, near Zapala city (Neuquén Province), has yielded the highest number of specimens, which are taxonomically and morphologically diverse. At Los Catutos locality, the Vaca Muerta Formation is represented by the Los Catutos Member, which is considered the only lithographic limestones known in the Southern Hemisphere. Here, we review the Tithonian fish faunas from the Vaca Muerta Formation. During Late Jurassic times, the actual Argentinian territory could have been a morphological diversification center, at least for some actinopterygian groups. The apparently lower species diversity recorded in marine Jurassic ichthyofaunas of Argentina (and some Gondwanan countries) in comparison with Chilean and European fish faunas could be related to the fish paleontological research history in Gondwana and the low number of detailed studies of most of specimens recorded.

  2. Phenotypic, Molecular and Symbiotic Characterization of the Rhizobial Symbionts of Desmanthus paspalaceus (Lindm.) Burkart That Grow in the Province of Santa Fe, Argentina

    Science.gov (United States)

    Fornasero, Laura Viviana; Del Papa, María Florencia; López, José Luis; Albicoro, Francisco Javier; Zabala, Juan Marcelo; Toniutti, María Antonieta; Pensiero, José Francisco; Lagares, Antonio

    2014-01-01

    Desmanthus paspalaceus (Lindm.) Burkart belongs to the D. virgatus complex, subfamily Mimosoidae. The known potential as livestock fodder of several of these legumes prompted us to undertake a phenotypic, molecular, and symbiotic characterization of the D. paspalaceus symbionts in the Santa Fe province, Argentina. The rhizobia collected—containing isolates with different abiotic-stress tolerances—showed a remarkable genetic diversity by PCR fingerprinting, with 11 different amplification profiles present among 20 isolates. In selected isolates 16S-rDNA sequencing detected mesorhizobia (60%) and rhizobia (40%) within the collection, in contrast to the genus of the original inoculant strain CB3126—previously isolated from Leucaena leucocephala—that we typified here through its 16S rDNA as Sinorhizobium terangae. The results revealed the establishment by diverse bacterial genera -rhizobia, sinorhizobia, and mesorhizobia- of full N2-fixing symbiotic associations with D. paspalaceus. This diversity was paralleled by the presence of at least two different nodC allelic variants. The identical nodC alleles of the Mesorhizobia sp. 10.L.4.2 and 10.L.5.3 notably failed to group within any of the currently described rhizo-/brady-/azorhizobial nodC clades. Interestingly, the nodC from S. terangae CB3126 clustered close to homologs from common bean nodulating rhizobia, but not with the nodC from S. terangae WSM1721 that nodulates Acacia. No previous data were available on nod-gene phylogeny for Desmanthus symbionts. A field assay indicated that inoculation of D. paspalaceus with the local Rhizobium sp. 10L.11.4 produced higher aerial-plant dry weights compared to S. teranga CB3126–inoculated plants. Neither the mesorhizobia 10.L.4.2 or 10.L.5.3 nor the rhizobium 10L.11.4 induced root nodules in L. leucocephala or P. vulgaris. The results show that some of the local isolates have remarkable tolerances to several abiotic stresses including acidity, salt, and temperature

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

    Directory of Open Access Journals (Sweden)

    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.

  4. A new genus of Platynini (Coleoptera: Carabidae) from Argentina

    OpenAIRE

    ROIG-JUÑENT, Sergio

    2003-01-01

    Los Platynini constituyen un grupo de carábidos distribuidos ampliamente en América del Sur, existiendo la mayor diversidad de especies en las regiones tropicales de altura de Los Andes. En la Argentina y Chile, la mayoría de las especies de Platynini se hallan distribuidas en áreas extracordilleranas, conociéndose pocos datos para la región Andina. A partir de recolecciones realizadas en la Precordillera y Cordillera de los Andes en Mendoza (Argentina), se hallaron ejemplares pertenecientes ...

  5. Two new species of Psectrascelis (Coleoptera: Tenebrionidae from western Argentina

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    Gustavo E. FLORES

    2007-01-01

    Full Text Available Se describen dos nuevas especies del género Psectrascelis Solier (Pimeliinae: Nycteliini del oeste de Argentina, P. argentina sp. nov. a gran altitud en la Precordillera de San Juan y P. telteca sp. nov. en la llanura de Mendoza, y se las incluye en la clave mas reciente del género. Se proveen datos sobre la distribución y el hábitat, así como fotografías de los adultos y pronotos y dibujos de los genitalia masculinos.

  6. Climate-vegetation relationship: adaptations of jarillal community to the semiarid climate. Lihué Calel National Park, province of La Pampa, Argentina

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    Valeria Soledad Duval

    2015-12-01

    Full Text Available The study of vegetation from the Geography perspective focuses on the analysis of the spatial distribution and on the factors affecting it. One of these factors is the climate, which determines the characteristics of the vegetation and, on a larger scale, of the communities. The aim of this paper is to analyze the climate-vegetation relationship by studying adaptations of the jarillal community regarding the semiarid climate in the Lihué Calel National Park, Argentina. Therefore, this contribution is concerned with the knowledge of the characteristics of the environment in order to understand how vegetation responds to certain phenomena, so management of protected areas will be more suitable. Lihué Calel National Park is a national protected area located in the south-center of La Pampa province, Argentina. According to Cabrera (1976 the area belongs to the floristic province of “monte” and the climate is warm and dry. In the interest to achieve the goals of this paper, Thornthwaite and Mather´s water balance was done. The data was collected from a weather station that belongs to the national park, for the period 1995-2010. Emberger›s pluviothermic coefficient, Lang´s rainfall index, De Martonne´s aridity index and Currey´s continentality index were analyzed. In addition, ten stands or plots of vegetation were placed to determine the floristic composition and the vegetation physiognomy. Then, plants species were identified as individuals and their adaptive responses were also analyzed. In conclusion, the survey verified that semi-arid climate conditions determine the morphology and the appearance of jarillal. Climate analysis shows that for the period 1995-2010 the average annual temperature is 16.2° C and reveals that thermal summers and winters are well differentiated. Large water deficit is defined, because water balance indicates that the evapotranspiration exceeds precipitation during every month of the year. According to

  7. in Buenos Aires Province, Argentina

    Directory of Open Access Journals (Sweden)

    Vilma G. Rosato

    2006-01-01

    Full Text Available Los líquenes pueden afectar edificios y monumentos causando un impacto estético negativo, como también ocasionar deterioro por procesos mecánicos y químicos. Puesto que los morteros de cemento y hormigones han sido el material de construcción más utilizado en el mundo durante el siglo XX, es importante estudiar los líquenes que crecen sobre estos sustratos. En un estudio realizado en diferentes localidades de la Provincia de Buenos Aires, se hallaron 33 especies creciendo sobre morteros y hormigones, identificadas por medio de estudios morfológicos y químicos. Staurothele frustulenta es nueva para el país y Acarospora subcastanea es nueva para la Provincia. Se registró una alta proporción de líquenes foliosos (15 especies en total. Algunas de estas especies sólo se conocidas sobre cortezas de árboles, fueron encontradas colonizando materiales de cemento.

  8. A gigantic new dinosaur from Argentina and the evolution of the sauropod hind foot.

    Science.gov (United States)

    González Riga, Bernardo J; Lamanna, Matthew C; Ortiz David, Leonardo D; Calvo, Jorge O; Coria, Juan P

    2016-01-18

    Titanosauria is an exceptionally diverse, globally-distributed clade of sauropod dinosaurs that includes the largest known land animals. Knowledge of titanosaurian pedal structure is critical to understanding the stance and locomotion of these enormous herbivores and, by extension, gigantic terrestrial vertebrates as a whole. However, completely preserved pedes are extremely rare among Titanosauria, especially as regards the truly giant members of the group. Here we describe Notocolossus gonzalezparejasi gen. et sp. nov. from the Upper Cretaceous of Mendoza Province, Argentina. With a powerfully-constructed humerus 1.76 m in length, Notocolossus is one of the largest known dinosaurs. Furthermore, the complete pes of the new taxon exhibits a strikingly compact, homogeneous metatarsus--seemingly adapted for bearing extraordinary weight--and truncated unguals, morphologies that are otherwise unknown in Sauropoda. The pes underwent a near-progressive reduction in the number of phalanges along the line to derived titanosaurs, eventually resulting in the reduced hind foot of these sauropods.

  9. GARGANTA SECA Y ARENA EN LAS BOTAS: PROSPECTANDO ANTECEDENTES ARQUEOLÓGICOS DE LAS TIERRAS ÁRIDAS DEL NORESTE MENDOCINO (CENTRO OESTE ARGENTINO (Dry throat and sand in the boots: Prospecting archaeological backgrounds of the Mendoza Northeastern drylands, Argentinian Center South

    Directory of Open Access Journals (Sweden)

    Horacio Chiavazza

    2009-03-01

    Full Text Available Aquí se presenta un detallado estado de las investigaciones arqueológicas desarrolladas en el noreste de la provincia argentina de Mendoza. Esta zona es objeto de estudios desde principios del siglo XX. Sin embargo los pulsos de la investigación han registrado etapas de abandono total y de intervenciones selectivas. Los investigadores han partido de los trabajos precedentes para explicar por extensión las modalidades de asentamiento en la totalidad del territorio norte y, sobre todo, del occidente montañoso, que era donde concentraban sus campañas. Esto acabó generando un cuadro de antecedentes desequilibrado y superficial en el conocimiento de dicha área, con implicaciones en el cuadro interpretativo general de la prehistoria local. En este caso, indagamos las posibles causas que dieron lugar a tal proceso, sus vínculos con los enfoques teóricos y metodologías dominantes a lo largo del siglo XX y su relación con la selección de zonas para llevar a cabo estudios de campo en el norte de la provincia. Reflexionamos críticamente sobre los alcances, límites y posibilidades que ofrece la región para profundizar los análisis arqueológicos del poblamiento prehispánico en relación con las condiciones del ambiente y los procesos históricos documentados, proponiendo discutir los enfoques que basan sus explicaciones en hechos dados por sentados y que merecerían antes una discusión en base a la evidencia disponible. ENGLISH: Here is a detailed state of archaeological research developed in the northeastern Argentine province of Mendoza. This area is the subject of studies since the early twentieth century. However, the pulses of the investigation have been stages of total abandonment and selective interventions. This ended up creating an unbalanced picture of history and superficial knowledge of that area, with implications for the general picture of prehistory interpreted locally. In this case, we investigate the possible causes

  10. Vida y muerte de doña Melchora Lemos, empresaria vitivinícola y terciaria de la Orden de Predicadores (Mendoza, Reino de Chile, 1691-1741

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    Lacoste, Pablo

    2006-08-01

    Full Text Available This paper studies the life and death of doña Melchora Lemos, «pulpera», miller and wine maker in Mendoza, in Chile’s Kingdom. She was the only woman who owned a «pulperia» in the province; she built the only mill of the city; and she leaded one of better winery of Mendoza. Her life and death developed under catholic church influence. The sources of the paper are unpublished documents taken from the historical Archives in Mendoza (Argentine and Santiago (Chile.

    El artículo examina la historia de vida y muerte de doña Melchora Lemos, singular empresaria del siglo XVIII. Ella era la única mujer que poseía una pulpería; levantó el entonces único molino harinero de la ciudad; y administró la bodega más moderna de la región desde el punto de vista de la tecnología. Estos hechos se produjeron en el contexto de una intensa vida religiosa como terciaria de la orden de Santo Domingo. El estudio se ha realizado a través de fuentes originales inéditas del Archivo Nacional de Chile y el Archivo Histórico de Mendoza.

  11. Geoid Model and Altitude at Mount Aconcagua Region (Argentina) from Airborne Gravity Survey

    DEFF Research Database (Denmark)

    Cristina Pacino, M.; Jaeger, Eric; Forsberg, René

    2014-01-01

    Aconcagua is part of the Southern Andes in the Argentine Province of Mendoza and it is the highest mountain in the Americas. The Aconcagua region is mostly inaccessible for land surveys. The existing gravity data are sparsely distributed, and mainly along the route currently used to climb the mou...

  12. Comments on "Infrared Photometry of V1057 Cyg" by Mendoza (1971)

    Science.gov (United States)

    Cruz-González, I.

    2011-04-01

    Mexican astronomy contributions in the seventies in well represented by the observational work on V1057 Cyg of E.. Mendoza V. in the Boletín de los Observatorios de Tonantzintla y Tacubaya 1971, 6, 37, 135. Mendoza presents evidence of one of the most important properties of the now called FUors: their infrared excess.

  13. PRIMER REGISTRO PREHISPÁNICO DE OBSIDIANAS EN EL PIEDEMONTE MERIDIONAL DE LA PROVINCIA DE TUCUMÁN (ARGENTINA: ANÁLISIS TECNOLÓGICO Y DE PROCEDENCIA / First pre Hispanic record of obsidian in the southern foothill of the Tucuman province (Argentina: tech

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    Gabriel Eduardo Miguez

    2015-06-01

    Full Text Available En este trabajo se presentan los resultados del estudio realizado sobre restos de obsidiana, los cuales constituyen los primeros registrados en contextos arqueológicos de las selvas meridionales de la provincia de Tucumán. Estos materiales fueron recuperados en capas estratigráficas del primer milenio D.C. correspondientes al sitio Santa Rosa, el cual se ubica en la base de las laderas orientales de la Sierra del Aconquija (Tucumán, Argentina. Se realizó un análisis técnico-morfológico de los especímenes, en conjunto con un análisis geoquímico mediante fluorescencia de rayos X (FRX para determinar la procedencia geográfica de los materiales de obsidiana. Los resultados determinaron que la materia prima de la muestra, compuesta exclusivamente por desechos de talla, procede de la cantera de Ona-Las Cuevas, la cual se ubica a ca.270 km al noroeste del sitio Santa Rosa, en el norte de la provincia de Catamarca, en la Puna meridional argentina. La gran distancia sitio-cantera nos lleva a proponer que las comunidades prehispánicas de estas tierras bajas habrían participado de esferas estables de interacción con grupos de áreas muy distantes, propiciando la circulación e intercambio de obsidianas dentro de la porción meridional del NO de Argentina. Abstract In this paper we present the results of the study conducted on obsidian specimens, which constitutes the first record of this kind in archaeological contexts of the southern forests of the province of Tucumán are presented. These materials were recovered in stratigraphic layers of the first millennium AD of the Santa Rosa site, which is located at the base of the eastern slopes of the Sierra del Aconquija (Tucumán, Argentina. A techno-morphological analysis of specimens in conjunction with geochemic alanalysis using X-ray fluorescence (XRF was performed to determine the geographical provenance of obsidian archaeological materials. Results determined that the sample raw material

  14. Revelando el origen de la variedad de vid ‘Bonarda’ cultivada en Argentina a través del empleo de marcadores moleculares microsatélites

    OpenAIRE

    De Rosas, María Inés; Martínez, Liliana

    2009-01-01

    ‘Bonarda’ es una variedad de vid que en Argentina se cultiva principalmente en las provincias de Mendoza y San Juan, representa el segundo cepaje tinto en superficie nacional cultivada y es considerada con gran potencial para la elaboración de vinos tintos de alta calidad. Existe incertidumbre respecto a su origen en el país. La descripción ampelográfica de la ‘Bonarda’ cultivada en Argentina remarca gra...

  15. 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...

  16. Human fascioliasis in Argentina: retrospective overview, critical analysis and baseline for future research

    Directory of Open Access Journals (Sweden)

    Cuervo Pablo

    2011-06-01

    Full Text Available Abstract In Argentina, human fascioliasis has never been adequately analysed, although having a physiography, climate, animal prevalences and lymnaeids similar to those of countries where the disease is endemic such as Bolivia, Peru and Chile. We performed a literature search identifying 58 reports accounting for 619 cases, involving 13 provinces, their majority (97.7% from high altitudes, in central mountainous areas and Andean valleys, concentrated in Cordoba (430 cases, Catamarca (73, San Luis (29 and Mendoza (28, the remaining provinces being rarely affected. This distribution does not fit that of animal fascioliasis. Certain aspects (higher prevalence in females in a local survey, although a trend non-significant throughout Argentina but not others (patient's age 3-95 years, mean 37.1 years resemble human endemics in Andean countries, although the lack of intensity studies and surveys in rural areas does not allow for an adequate evaluation. Human infection occurs mainly in January-April, when higher precipitation and temperatures interact with field activities during summer holidays. A second June peak may be related to Easter holidays. The main risk factor appears to be wild watercress ingestion (214 during recreational, weekend outings or holiday activities, explaining numerous family outbreaks involving 63 people and infection far away from their homes. Diagnosis mainly relied on egg finding (288, followed by serology (82, intradermal reaction (63, surgery (43, and erratic fluke observation (6. The number of fascioliasis-hydatidosis co-infected patients (14 is outstanding. Emetine appears as the drug most used (186, replaced by triclabendazole in recent years (21. Surgery reports are numerous (27.0%. A long delay in diagnosis (average almost 3.5 years and high lithiasis proportion suggest that many patients are frequently overlooked and pose a question mark about fascioliasis detection in the country. High seroprevalences found in

  17. Human fascioliasis in Argentina: retrospective overview, critical analysis and baseline for future research

    Science.gov (United States)

    2011-01-01

    In Argentina, human fascioliasis has never been adequately analysed, although having a physiography, climate, animal prevalences and lymnaeids similar to those of countries where the disease is endemic such as Bolivia, Peru and Chile. We performed a literature search identifying 58 reports accounting for 619 cases, involving 13 provinces, their majority (97.7%) from high altitudes, in central mountainous areas and Andean valleys, concentrated in Cordoba (430 cases), Catamarca (73), San Luis (29) and Mendoza (28), the remaining provinces being rarely affected. This distribution does not fit that of animal fascioliasis. Certain aspects (higher prevalence in females in a local survey, although a trend non-significant throughout Argentina) but not others (patient's age 3-95 years, mean 37.1 years) resemble human endemics in Andean countries, although the lack of intensity studies and surveys in rural areas does not allow for an adequate evaluation. Human infection occurs mainly in January-April, when higher precipitation and temperatures interact with field activities during summer holidays. A second June peak may be related to Easter holidays. The main risk factor appears to be wild watercress ingestion (214) during recreational, weekend outings or holiday activities, explaining numerous family outbreaks involving 63 people and infection far away from their homes. Diagnosis mainly relied on egg finding (288), followed by serology (82), intradermal reaction (63), surgery (43), and erratic fluke observation (6). The number of fascioliasis-hydatidosis co-infected patients (14) is outstanding. Emetine appears as the drug most used (186), replaced by triclabendazole in recent years (21). Surgery reports are numerous (27.0%). A long delay in diagnosis (average almost 3.5 years) and high lithiasis proportion suggest that many patients are frequently overlooked and pose a question mark about fascioliasis detection in the country. High seroprevalences found in recent random

  18. Human fascioliasis in Argentina: retrospective overview, critical analysis and baseline for future research.

    Science.gov (United States)

    Mera y Sierra, Roberto; Agramunt, Veronica H; Cuervo, Pablo; Mas-Coma, Santiago

    2011-06-11

    In Argentina, human fascioliasis has never been adequately analysed, although having a physiography, climate, animal prevalences and lymnaeids similar to those of countries where the disease is endemic such as Bolivia, Peru and Chile. We performed a literature search identifying 58 reports accounting for 619 cases, involving 13 provinces, their majority (97.7%) from high altitudes, in central mountainous areas and Andean valleys, concentrated in Cordoba (430 cases), Catamarca (73), San Luis (29) and Mendoza (28), the remaining provinces being rarely affected. This distribution does not fit that of animal fascioliasis. Certain aspects (higher prevalence in females in a local survey, although a trend non-significant throughout Argentina) but not others (patient's age 3-95 years, mean 37.1 years) resemble human endemics in Andean countries, although the lack of intensity studies and surveys in rural areas does not allow for an adequate evaluation. Human infection occurs mainly in January-April, when higher precipitation and temperatures interact with field activities during summer holidays. A second June peak may be related to Easter holidays. The main risk factor appears to be wild watercress ingestion (214) during recreational, weekend outings or holiday activities, explaining numerous family outbreaks involving 63 people and infection far away from their homes. Diagnosis mainly relied on egg finding (288), followed by serology (82), intradermal reaction (63), surgery (43), and erratic fluke observation (6). The number of fascioliasis-hydatidosis co-infected patients (14) is outstanding. Emetine appears as the drug most used (186), replaced by triclabendazole in recent years (21). Surgery reports are numerous (27.0%). A long delay in diagnosis (average almost 3.5 years) and high lithiasis proportion suggest that many patients are frequently overlooked and pose a question mark about fascioliasis detection in the country. High seroprevalences found in recent random

  19. Energy efficient school buildings in central-western Argentina: an assessment of alternative typologies for the classroom tier

    Energy Technology Data Exchange (ETDEWEB)

    De Rosa, C.; Basso, M.; Fernandez, J.C. [Laboratorio de Ambiente Humano y Vivienda, Mendoza (AR)] [and others

    2000-07-01

    Four energy-efficient demonstration school buildings were built in the western province of Mendoza, Argentina, in 1999, as part of a massive building program required to implement the new Federal Education Plan. The buildings should make medium use of bioclimatic strategies and daylighting. The aspects of typology of the classroom tiers became immediately apparent as one of the main conditioners of the overall scheme. Three different alternative schemes were designed and built. A deeper analysis of these and other possible alternatives were thought essential for future constructions of the type. Four typologies of the classroom tier, using the same, locally available technology, are being comparatively assessed in the aspects of energy efficiently, thermal and luminous comfort, construction and operation costs and environmental impact (LCA). The paper presents the provisional results of the two first items only: energy efficiency and thermal comfort. While all four schemes evaluated are believed to be ''workable'', differences will tend to favour some the other according to context situations. Volumetric Loss Coeff. range from 1.09 to 1.24 W/Km{sup 3}. Solar savings fractions for the school operation hours vary between: 82.83 and 91.58%. Work is being continued to cover all the analysis items in a combined way. (author)

  20. The elasticity of Substitution in demand for Non tradable Goods in Latin America. Case Study: Argentina

    OpenAIRE

    Pablo Andres Neumeyer; Martín Gonzalez Rozada

    2003-01-01

    This objective of this paper is to estimate the elasticity of substitution in the demand for non-tradable goods relative to tradable goods in Argentina. This parameter plays a crucial role in the analysis of the macroeconomic equilibrium of a small open economy (Mendoza, Galindo and Izquierdo (2003)). Using two data sets we found estimates for this elasticity of, approximately, 0.40 and 0.48.

  1. Extensión del límite austral de distribución de tres especies de peces óseos tropicales en la costa de la Provincia de Buenos Aires, Argentina Southern extension of three species of tropical bony fishes along the coast of Buenos Aires Province, Argentina

    Directory of Open Access Journals (Sweden)

    Andrés C Milessi

    2012-11-01

    Full Text Available Se presentan tres nuevos registros de especies de peces óseos cuya distribución corresponde a aguas tropicales, capturados por buques pesqueros en la costa de la Provincia de Buenos Aires, Argentina (CPBA, 36°-38°S. Los ejemplares corresponden a las especies: Rachycentrum canadum, Elops saurus y Caulolatilus chrysops. Estos registros amplían significativamente el límite austral de su distribución. La presencia ocasional de estas especies está asociada al transporte de agua subtropical cálida proveniente de la plataforma continental brasilera. Esta hipótesis es probada mediante el análisis de imágenes satelitales de temperatura superficial del mar.We document the southern records of three species of tropical bony fishes along the coast of Buenos Aires Province, Argentina (CBAP, 36-38°S. Rachycentrum canadum, Elops saurus and Caulolatilus chrysops were caught by bottom-trawl commercial vessels. Records presented here significantly extend southward their latitudinal distribution from those previously reported. Using sea surface temperature satellite images we show a southward warm circulation event from Brazil as a putative factor to explain the occurrence of these bony fishes in the CBAP.

  2. La lacertofauna de Mendoza: lista actualizada, distribución y riqueza

    Directory of Open Access Journals (Sweden)

    Corbalán, Valeria

    2008-04-01

    Full Text Available La provincia de Mendoza posee una rica fauna de lagartos pertenecientes a las familias Leiosauridae, Liolaemidae, Teiidae, Scincidae y Gekkonidae. Algunos son propios del Monte, Puna, Payunia o región andina, mientras que otros poseen una amplia distribución, ocupando dos o más ecosistemas. El objetivo de este trabajo fue actualizar la lista lacertofaunística de la provincia y determinar las áreas de mayor riqueza de especies en relación a estos cuatro tipos de ecosistemas. Se utilizaron datos de procedencia de 43 especies de lagartos a partir de colecciones herpetológicas y de bibliografía. Las localidades fueron georreferenciadas y mapeadas. Una primera estimación de las áreas de mayor riqueza fue realizada sobre la base de las distribuciones de acuerdo a los puntos de colecta. En un segundo análisis, se generaron modelos predictivos de distribución utilizan-do 26 variables ambientales. Estas áreas potenciales fueron superpuestas a fin de obtener el número de especies en cuadrículas de 4,6 km x 4,6 km. Los resultados de ambos métodos indican que la mayor riqueza de especies se encuentra en la Payunia, probablemente en relación a la mayor heterogeneidad ambiental de la zona, ya que es considerada un área ecotonal entre la región fitogeográfica de la Patagonia y el Monte. Un análisis de similitud (Índice de Morisita demuestra que la similitud entre ecosistemas en cuanto a la composición de especies es baja, conformándose dos grupos: el Monte y Patagonia por un lado, y el ecosistema Andino y Puneño por otro. Mendoza province has a rich fauna of lizards that belongs to the Leiosauridae, Liolaemidae, Teiidae, Scincidae and Gekkonidae families. Some of them are typical of the Monte, Puna, Payunia or Andean region, whereas some others are widespread, inhabiting two or more ecosystems. The objective of this work is to perform an updating of the Mendoza lizard fauna and to determine the most highly species-rich areas related to

  3. Mineralización de talco asociada a los cuerpos ultramáficos de la Faja del Río de Las Tunas, Cordillera Frontal de Mendoza

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    Gargiulo, María Florencia

    2011-12-01

    Full Text Available Talc mineralization related to the ultramafic bodies of the Río de Las Tunas belt, Frontal Cordillera of Mendoza province. This contribution shows the main characteristics of the talc mineralization related to the Río de Las Tunas ultramafic bodies in the Salamanca Mining District, Frontal Cordillera of Mendoza province. According to the parageneses defined on the studied samples, three generations of talc were established: 1º crystallized in metaperidotites and related to the prograde stage of the regional metamorphism; 2º crystallized inreaction zones (mostly in the talc zone developed at the boundary between metaperidotites and their country-rocks.These reaction zones evidence a metasomatic process due to geochemical gradient between the ultramafic body and their country-rocks. This process was developed during the retrogression of the regional metamorphic cycle. 3º Talc present in shear-zones that cut across the ultramafic bodies. The extreme serpentinization of the ultramaficbodies is concentrated in shear-zones where the serpentine is subsequently replaced by talc ± carbonates related with a hydrothermal stage. Aqueous fluids relatively enriched in CO2 flowed through these shear-zones causing the cease of serpentine formation favoring the talc and/or carbonates. Mined talc deposits are those in shear zones and reaction zones. They are mostly industrial-, asbestine- or talcschist-type. The talc related to the hydrothermal stage can locally reach first and extra qualities.

  4. Status and conservation of the ruddy-headed goose Chloephaga rubidiceps Sclater (Aves, Anatidae in its wintering grounds (Province of Buenos Aires, Argentina Estado y conservación del cauquén colorado Chloephaga rubidiceps Sclater (Aves, Anatidae en su zona de invernada (Provincia de Buenos Aires, Argentina

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    DANIEL E BLANCO

    2003-03-01

    Full Text Available ABSTRACT The mainland population of the ruddy-headed goose (Chloephaga rubidiceps breeds in southern Patagonia and winters in the south of Buenos Aires province (Argentina, with a recent estimated size at around 900 individuals. This population is considered "in danger of extinction", while the Malvinas (Falkland Islands population is in well conservation status, with an estimated size of 40,000 birds. The aim of this work is to contribute with updated information about the ruddy-headed goose's population wintering in southern Buenos Aires province. The specific objectives were to better delimit its wintering area, to look for sites with large numbers, to study its habitat used, and to identify main threats to the species. Two intensive surveys were conducted during the austral winter of 1999. The results: (1 confirm the low abundance of the ruddy-headed goose supporting its critical conservation status, (2 corroborate its very restricted distribution, with more than 80 % of sightings concentrated in an area of 13,000 ha in southern Buenos Aires province, and (3 suggest that changes in the species' habitat use during the wintering season appear to be a response to changes in habitat availability, resulting from the growth of crops and pastures. The overlap between the species wintering distribution and the main wheat cropping areas of Argentina results in serious threats to this goose. Management actions are discussed to contribute to the conservation of this endangered species.La población continental del Cauquén colorado (Chloephaga rubidiceps cría en el sur de la Patagonia e inverna en el sur de la provincia de Buenos Aires (Argentina, con un tamaño poblacional estimado recientemente en alrededor de 900 individuos. Esta población está considerada "en peligro de extinción", mientras la población de las Islas Malvinas se mantiene en buen estado de conservación, con un tamaño estimado en 40.000 individuos. La meta de este trabajo es

  5. Uranium in South America with Emphasis on the Brazilian Uranium Province (Summary L'uranium en Amérique du Sud et plus particulièrement dans la province uranifère brésilienne (résumé

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    Forman J. M. A.

    2006-11-01

    Full Text Available The search for uranium hos been going on in South America for the last 30 years and has led to discoveries of deposits in the following countries: Brazil, Argentine, Venezuela, Peru, Chile, Colombia and Ecuador. - In addition to the already known deposits in Brazil at Pocas de Caldas (Minas Gerais, Figueira (Parana and Quadrilatère Ferrifère (Minas Gerais, other deposits have been discovered at Itatiaia where the uranium is associated with phosphates, in the Lagoa Real region where the uranium is in microclinal gneiss, and in the Rio Preto region. Nearly 100 ore shows have been found in Lower Precarnbrian shales covered by Middle Precambrion quartzose sandstore. The industrial complexes of Pocas de Caldas and Fiqueira will start production respectively in 1980 and 1983. - In Argentina the mains deposits are in the Serra Pintada (Mendoza Province, at Los Adobes and Cerro Condor (Chubut Province and at Don Otto in the northern part of the country. Reserves now known and those being developed are very promising for the future. Pendant les 30 dernières années la recherche de l'uranium s'est poursuivie en Amérique du Sud et a abouti à la découverte de gisements dans les pays suivants : Brésil, Argentine, Venezuela, Pérou, Chili, Colombie et Équateur. . - Au Brésil, outre les gisements déjà connus de Poças de Caldas (Minas Gerais de Figueira (Parana et du Quadrilatère Ferrifère des Minas Gerais, d'autres gisements ont été découverts à Itatiaia où l'uranium est associé à des phosphates, dans la zone de Lagoa Real où l'uranium se trouve dans des gneiss à microcline et dans la région de Rio Preto. Près de 100 indices minéralisés sont reconnus dans les schistes du Précambrien inférieur recouverts par des grès quartzeux d'âge précambrien moyen. Les complexes industriels de Pocas de Caldas et de Figueira entreront en production respectivement en 1980 et 1983. - En Argentine, les principaux gisements se trouvent dans la

  6. [Campylobacter spp.: prevalence and pheno-genotypic characterization of isolates recovered from patients suffering from diarrhea and their pets in La Pampa Province, Argentina].

    Science.gov (United States)

    Tamborini, Ana L; Casabona, Luis M; Viñas, María R; Asato, Valeria; Hoffer, Alicia; Farace, María I; Lucero, María C; Corso, Alejandra; Pichel, Mariana

    2012-01-01

    The prevalence of Campylobacter spp. was investigated in 327 patients suffering from diarrhea and in 36 animals (dogs, cats and chickens) owned by the patients that presented infection by Campylobacter in Santa Rosa, La Pampa, Argentina. Campylobacter spp. was isolated in 50/327 patients and in 12/36 animals, being Campylobacter jejuni the most common species. Resistance to ciprofloxacin (65 %) and tetracycline (32 %) was found among 35 isolates of human origin studied. Seven genetic subtypes were observed among 13 C. jejuni isolates by pulsed field gel electrophoresis. Two subtypes grouped isolates belonging to patients and their respective dogs whereas another subtype grouped one isolate of human origin and two isolates from the patient's chickens. The results of this investigation highlight the need to strengthen surveillance of Campylobacter spp. not only in poultry, which is recognized as the main reservoir, but also in pets, which were shown to be asymptomatic carriers of the pathogen.

  7. Assessment of human health risk related to metals by the use of biomonitors in the province of Córdoba, Argentina.

    Science.gov (United States)

    Carreras, Hebe A; Wannaz, Eduardo D; Pignata, María L

    2009-01-01

    The evaluation of metal contents in the environment is of vital importance for the assessment of human exposure. Thus the species Usnea amblyoclada, Ramalina celastri and Tillandsia capillaris were tested as bioaccumulators of transition metals in the urban area of Córdoba city, Argentina. The level of metals on biomonitors was compared to that of total deposition samples. All three species discriminated zones within the urban area of Córdoba city with different pollution levels; they revealed high levels of Zn in the downtown area and confirmed high levels of some transition metals in an industrial area. The correlation analysis revealed that the lichen R. celastri had the highest correlation rates with total deposition samples, suggesting it is a valuable biomonitor of atmospheric pollution. A significant relationship was also observed between respiratory diseases in children and the contents of metal accumulated in R. celastri and T. capillaris, indicating their usefulness when assessing human exposure to metals.

  8. Parasitosis intestinales en poblaciones Mbyá-Guaraní de la Provincia de Misiones, Argentina: aspectos epidemiológicos y nutricionales Intestinal parasitosis in Mbyá-Guaraní populations from Misiones Province, Argentina: epidemiological and nutritional aspects

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    Graciela Teresa Navone

    2006-05-01

    Full Text Available Se describieron las enteroparasitosis más frecuentes en dos comunidades Mbyá-Guaraní de Misiones, Argentina: Kaaguy Poty e Yvy Pytá. Las parasitosis intestinales se asociaron con el estado nutricional de los individuos infectados y los factores ambientales y culturales que caracterizan a las poblaciones estudiadas. Los resultados se compararon con los obtenidos en una población aborigen vecina, Takuapí, y la población urbana más cercana: Aristóbulo del Valle. Se utilizaron las técnicas de Ritchie, Willis y Kato Katz para las muestras fecales. Se analizaron los parámetros antropométricos y se procesaron muestras de tierra. De un total 296 individuos en las cuarto poblaciones, 100 (87,7%, 63 (88,7%, 49 (96,1% y 50 (82% estuvieron parasitados en Kaaguy Poty, Yvy Pytá, Takuapí, y Aristóbulo del Valle respectivamente. El 84% de los individuos parasitados estuvieron poliparasitados. El 43% de los individuos medidos presentaron desnutrición y el 87% de ellos estaban parasitados. Hubo asociación entre el uso de letrinas y Giardia lamblia (p Intestinal parasite infestation in indigenous Mbyá-Guaraní communities in Misiones, Argentina, was described and associated with nutritional status and environmental and cultural factors. The results were compared with those from Takuapí, a neighboring indigenous population, and the nearest urban population, Aristóbulo del Valle. The Ritchie, Willis, and Kato Katz techniques were used to analyze the stool samples. Anthropometric parameters were analyzed and earth samples processed. From a total sample of 296 individuals analyzed in the four populations, 100 (87.7%, 63 (88.7%, 49 (96.1%, and 50 (82% were infested in Kaaguy Poty, Yvy Pytá, Takuapí, and Aristóbulo del Valle, respectively. 84% of infested individuals had multiple parasites. The 43% of the individuals presented malnutrition, and 87% of these were infested. There was an association between use of latrines and Giardia lamblia (p < 0

  9. Brote de histoplasmosis en la Escuela de Cadetes de la Base Aérea de Morón, Provincia de Buenos Aires, República Argentina Histoplasmosis outbreak in Morón, Buenos Aires Province, Argentina

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    R. Negroni

    2010-12-01

    Full Text Available Se describe un brote de histoplasmosis que afectó a 6 cadetes de la Fuerza Aérea Argentina, sin antecedentes patológicos previos. Todos consultaron por problemas respiratorios después de haber limpiado un hangar. En ese recinto se encontraron abundantes deyecciones de animales, presuntamente de palomas y murciélagos. Los pacientes sufrieron fiebre, mialgias, taquipnea y tos no productiva. Las radiografías y tomografías de tórax mostraron imágenes pulmonares micronodulares, engrosamiento de los tabiques interalveolares y adenopatías hiliares. Todos tuvieron una evolución favorable y no requirieron tratamiento antifúngico. Las pruebas de inmunodifusión y contrainmunoelectroforesis con antígenos de Histoplasma capsulatum fueron positivas, al igual que las intradermorreacciones con histoplasmina. Se recogieron 5 muestras de tierra del lugar, las que fueron inoculadas por vía intraperitoneal a 20 hámsteres. De los cultivos de hígado y bazo de dichos animales se consiguió aislar la fase micelial de H. capsulatum. La cepa aislada se comparó con las obtenidas de 12 pacientes argentinos utilizando perfiles genéticos y se observó un clado único con más de 96% de similitud, lo que confirma la homogeneidad de las cepas argentinas. Si bien la histoplasmosis es endémica en la Pampa húmeda, este es el primer brote totalmente documentado al sur del paralelo 34°.An histoplasmosis outbreak affecting 6 previously healthy Air Force cadets is herein presented. The patients suffered from fever and respiratory symptoms after having cleaned an abandoned hangar soiled with pigeons and bat droppings. They all presented fever, myalgia, tachypnea, and nonproductive cough. Chest X-ray and CT scan studies showed disseminated reticulonodular images affecting both lungs. Hiliar adenomegalies were also observed. All patients achieved a favourable outcome without antifungal treatment. Both serologic tests searching for specificic antibodies

  10. Contribución al conocimiento de los reservorios del Trypanosoma cruzi (Chagas,1909 en la Provincia de Corrientes, Argentina Contribution to knowledge of reservoirs of Trypanosoma cruzi (Chagas, 1909 in Corrientes Province, Argentina

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    María Esther Bar

    1999-06-01

    Full Text Available Con el propósito de identificar a reservorios del Trypanosoma cruzi se investigaron 60 mamíferos en los Departamentos Capital y San Luis del Palmar. Se examinaron: primates, roedores, marsupiales, carnívoros y edentados; 40 vivían en cautiverio y 20 fueron capturados mediante trampas en una comunidad rural forestal. Los mamíferos fueron analizados por xenodiagnóstico, empleándose ninfas de 3o o 4o estadío de Triatoma infestans ayunadas durante 2 semanas. Las heces de los triatominos fueron observadas al microscopio (400x a los 30, 60 y 90 días post-alimentación. En 2 Saimiri sciureus y en 1 Cebus apella se constató infección por tripanosomas cruziformes. Se concluye que la parasitemia detectada fue baja. La presencia de Didelphis albiventris, reservorio potencial del Trypanosoma cruzi , en una zona de transmisión activa del parásito representa un factor de riesgo, por lo que son necesarias futuras investigaciones epidemiológicas para determinar la real diagnosis de esta parasitosis en la provincia de Corrientes, Argentina.In order to identify Trypanosoma cruzi reservoirs in transmission areas, 60 mammals in Capital and San Luis del Palmar Departments, Corrientes, Argentina were studied. Primates, rodents, carnivores, marsupials and edentates were investigated, 40 of them living in captivity and 20 caught with traps in a rural area. The mammals were examined by xenodiagnosis and third or fourth instars nymphs of Triatoma infestans starved for 2 weeks were used. The feces were microscopically observed (400x for Trypanosoma cruzi infection at 30, 60 and 90 days after feeding. Trypanosoma cruzi-like parasites were identified in 2 Saimiri sciureus and 1 Cebus apella analyzed by xenodiagnosis. It was concluded that parasitemia was low. Howewer, the presence in a forest area of Didelphis albiventris, potential reservoir of the parasite, indicates a risk factor and deserves further epidemiological study for a true diagnosis of this

  11. Rodent diversity and habitat use in a protected area of Buenos Aires province, Argentina Diversidad y uso del hábitat por roedores en un área protegida de Buenos Aires, Argentina

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    Isabel E. Gómez-Villafañe

    2012-09-01

    Full Text Available Habitat use of rodents is associated to environmental variables, species requirements and biological interactions. The aim of this study was to analyse the macro and microhabitat use and spatial variation in the abundance of small wild rodents that inhabit Otamendi Natural Reserve, Argentina. We studied the rodent communities in 6 habitats: riparian forest, Celtis tala forest, lowland grassland, salt marsh and 2 highland grasslands. We captured a total of 153 individual of Scapteromys aquaticus, Akodon azarae, Oxymycterus rufus, Oligoryzomys flavescens, Deltamys kempi and O. nigripes, with a trapping effort of 3636 trap-nights. The species richness is maintained by the presence of different habitats that satisfy specific requirements from specialist and generalist species, using differentially the reserve and forming communities of different specific composition in each habitat. A differential macrohabitat use was observed by all species, and a certain level of selectivity at microhabitat scale was observed in individuals of 2 species. This study shows that the diversity of environments in the Otamendi Natural Reserve, which allows the maintenance of many wild species of small rodents; confirming the high ecological and conservational value of the reserves inside an urban region.El uso del habitat de los roedores está asociado a variables ambientales, requerimientos específicos e interacciones biológicas. El objetivo de este estudio fue analizar el uso del macro y microhábitat y la variación espacial en la abundancia de pequeños roedores que habitan la Reserva Natural Otamendi, Argentina. Estudiamos la comunidad de roedores en 6 ambientes: bosque ribereño, talares, pastizales bajos, pastizal salino y 2 pastizales altos. Capturamos 153 individuos de Scapteromys aquaticus, Akodon azarae, Oxymycterus rufus, Oligoryzomys flavescens, Deltamys kempi y O. nigripes, con un esfuerzo de 3 636 trampas-noche. La riqueza de especies se mantiene

  12. Urban mobility regulation in metropolitan area of Mendoza

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    Lía Martínez

    2016-11-01

    Full Text Available Achieving the paradigm of sustainable urban mobility requires institutional capacities, appropriate policies and a regulatory framework that contains them. This work aims to contribute to the knowledge of the regulation of urban mobility in the metropolitan area of Mendoza. To this end, the current mobility regulations are assessed through indicators that are classified into three key areas: institutional and political organization, urban system and financial setup. The purpose is to account for the existence, or not, of regulatory capacities contained in the paradigm of sustainable mobility. Among the results, the absence of a policy of sustainable urban mobility is noteworthy, as well as the lack of sectorial coordination. Also of note is the absence of coordination between the urban planning system and the public transport provision. Lastly, in the financial sector, the results point to a promotion of sustainable transport modes but without such an explicit purpose.

  13. Quality characterization and evaluation of bentonites from the provinces of San Juan and Río Negro (Argentina) for their use in the oil and ceramics industries

    Energy Technology Data Exchange (ETDEWEB)

    Hidalgo, N.; Senese, A.; Cano, E.; Sarquis, P.

    2016-07-01

    The aim of this research work is to characterize bentonites, both physically and chemically, as well as mineralogically, from deposits located in the Argentine provinces of San Juan and Rio Negro. The study is completed with technological assays to evaluate the quality of the samples under study so as to determine possible industrial uses and/or applications for this material. To carry out this work, four samples of bentonite, identified as M1, M3, and M4, from the province of San Juan, and another, identified as M2, from the province of Rio Negro were used. Physical characterization consisted of determining: swelling, density, moisture, pH and specific gravity of the bentonite samples through application of a number of techniques. Chemical characterization of major components was carried out by using wet methods through acid attack, whilst ICP was used to characterize minor components. Mineralogical characterization was carried out by using an infrared spectrometer. The technological assays for evaluating the quality of the bentonite were carried out following the method indicated by the API and SEGEMAR standards, among others, in order to determine possible uses and/or applications, mainly in the oil and ceramics industries It was found that the M2 bentonite is the most suitable to be used as a drilling mud as it meets the requirements specified by the API standards. The M3 bentonite, due to its physico-chemical characteristics such as low rheology, swelling, low iron content, amongst others, is the most suitable for the ceramics industry. (Author)

  14. Who Defines Culturally Acceptable Health Access? Universal rights, healthcare politics and the problems of two Mbya-Guarani communities in the Misiones Province, Argentina

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    A. Sy

    2013-05-01

    Full Text Available This paper seeks to analyze the problems and barriers encountered when public policy health programs are implemented within indigenous communities. The initial stumbling block for such programs is precisely the idea of health as a universal right, around which emerges a characterization and stereotype of the indigenous population who are consequently addressed as a homogenized unit subsisting below the poverty line, and marginalized. A result of this is that the  particular ethno-cultural register of such populations fails to be acknowledged and form part of a systematic public health policy. Consequently, health policies become generalized in character, unable to variate and differentiate according to the culturally specific contexts within which health outreach and access is needed. In this sense, based on the results of an ethnographic study carried out in two Mbya-Guaraní indigenous communities of Argentina, our study highlights as to how public policies of indigenous health are perceived, their impact value measured, and the meanings which emerge locally about the policy practices implemented.Lastly, our study identifies problems that can be avoided in fulfilling the goals of universal policies and certain questions to consider at the time of policy design and implementation.

  15. B-esterase activities and blood cell morphology in the frog Leptodactylus chaquensis (Amphibia: Leptodactylidae) on rice agroecosystems from Santa Fe Province (Argentina).

    Science.gov (United States)

    Attademo, Andrés M; Cabagna-Zenklusen, Mariana; Lajmanovich, Rafael C; Peltzer, Paola M; Junges, Celina; Bassó, Agustín

    2011-01-01

    Activity of B-esterases (BChE: butyrylcholinesterase and CbE: carboxylesterase using two model substrates: α-naphthyl acetate and 4-nitrophenyl valerate) in a native frog, Leptodactylus chaquensis from rice fields (RF1: methamidophos and RF2: cypermethrin and endosulfan sprayed by aircraft) and non-contaminated area (pristine forest) was measured. The ability of pyridine-2-aldoxime methochloride (2-PAM) to reactivate BChE levels was also explored. In addition, changes in blood cell morphology and parasite infection were determined. Mean values of plasma BChE activities were lower in samples from the two rice fields than in those from the reference site. CbE (4-nitrophenyl valerate) levels varied in the three sites studied, being highest in RF1. Frog plasma from RF1 showed positive reactivation of BChE activity after incubation with 2-PAM. Blood parameters of frogs from RF2 revealed morphological alterations (anisochromasia and immature erythrocytes frequency). Moreover, a major infection of protozoan Trypanosoma sp. in individuals from the two rice fields was detected. We suggest that integrated use of several biomarkers (BChE and CBEs, chemical reactivation of plasma with 2-PAM, and blood cell parameters) may be a promising procedure for use in biomonitoring programmes to diagnose pesticide exposure of wild populations of this frog and other native anuran species in Argentina.

  16. Continuous multi-criteria methods for crop and soil conservation planning on La Colacha (Río Cuarto, Province of Córdoba, Argentina

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    J. M. Antón

    2012-08-01

    Full Text Available Agro-areas of Arroyos Menores (La Colacha west and south of Río Cuarto (Prov. of Córdoba, Argentina basins are very fertile but have high soil loses. Extreme rain events, inundations and other severe erosions forming gullies demand urgently actions in this area to avoid soil degradation and erosion supporting good levels of agro production. The authors first improved hydrologic data on La Colacha, evaluated the systems of soil uses and actions that could be recommended considering the relevant aspects of the study area and applied decision support systems (DSS with mathematic tools for planning of defences and uses of soils in these areas. These were conducted here using multi-criteria models, in multi-criteria decision making (MCDM; first of discrete MCDM to chose among global types of use of soils, and then of continuous MCDM to evaluate and optimize combined actions, including repartition of soil use and the necessary levels of works for soil conservation and for hydraulic management to conserve against erosion these basins. Relatively global solutions for La Colacha area have been defined and were optimised by Linear Programming in Goal Programming forms that are presented as Weighted or Lexicographic Goal Programming and as Compromise Programming. The decision methods used are described, indicating algorithms used, and examples for some representative scenarios on La Colacha area are given.

  17. Main flavonoids, DPPH activity, and metal content allow determination of the geographical origin of propolis from the Province of San Juan (Argentina).

    Science.gov (United States)

    Lima, Beatriz; Tapia, Alejandro; Luna, Lorena; Fabani, María P; Schmeda-Hirschmann, Guillermo; Podio, Natalia S; Wunderlin, Daniel A; Feresin, Gabriela E

    2009-04-08

    The chemical characterization as well as the assessment of geographical origin of propolis from several areas of the Provincia de San Juan (Argentina) is reported. Chemical characterization of propolis was performed by measuring total phenolic (TP), total flavonoids (FL), free radical scavenging capacity (DPPH bleaching), and metal content in samples of six different districts. Methanolic propolis extracts (MEP) showed TP ranging from 25.7 to 39.3 g of gallic acid equivalents per 100 g of MEP, whereas flavonoids ranged from 6.6 to 13.3 g of quercetin equivalents per 100 g of MEP. Six main flavonoids were isolated and identified from the propolis samples, comprising the flavanones 7-hydroxy-8-methoxyflavanone (1), pinocembrin (2), and pinobanksin (3), the flavones chrysin (4) and tectochrysin (5), and the flavonol galangin (6). Compounds 1-6 were quantified by HPLC-PDA. Free radical scavenging activity, measured as percent DPPH bleaching, ranged from 46.6 to 89.5 at 10 mug/mL. Moreover, propolis samples presented high contents of Ca, K, Fe, Na, and Mg, but low amounts of Mn and Zn. Linear discriminant analysis affords eight descriptors, galangin, pinocembrin, pinobanksin, chrysin, tectochrysin, DPPH, K, and Na, allowing a clear distinction with 100% accuracy among different origins within the Provincia de San Juan. A direct relationship of DPPH free radical scavenging activity with TP or with compounds 1-6 was not found, showing the need of further evaluation on the origin of free radical activity in propolis samples.

  18. Phylogeny, diet, and habitat of an extinct ground sloth from Cuchillo Curá, Neuquén Province, southwest Argentina

    Science.gov (United States)

    Hofreiter, Michael; Betancourt, Julio L.; Sbriller, Alicia Pelliza; Markgraf, Vera; McDonald, H. Gregory

    2003-01-01

    Advancements in ancient DNA analyses now permit comparative molecular and morphological studies of extinct animal dung commonly preserved in caves of semiarid regions. These new techniques are showcased using a unique dung deposit preserved in a late glacial vizcacha (Lagidium sp.) midden from a limestone cave in southwestern Argentina (38.5° S). Phylogenetic analyses of the mitochondrial DNA show that the dung originated from a small ground sloth species not yet represented by skeletal material in the region, and not closely related to any of the four previously sequenced extinct and extant sloth species. Analyses of pollen and plant cuticles, as well as analyses of the chloroplast DNA, show that the Cuchillo Curá ground sloth browsed on many of the same herb, grass, and shrub genera common at the site today, and that its habitat was treeless Patagonian scrub-steppe. We envision a day when molecular analyses are used routinely to supplement morphological identifications and possibly to provide a time-lapse view of molecular diversification.

  19. 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.

  20. [Health and working conditions of high school and university teachers in Mendoza: between commitment and emotional distress].

    Science.gov (United States)

    Collado, Patricia Alejandra; Soria, Cecilia Beatriz; Canafoglia, Eliana; Collado, Sandra Alicia

    2016-01-01

    With the objective of analyzing aspects related to the perception of working conditions and their impact on health in the teachers and professors who work for the Universidad Nacional de Cuyo (UNCuyo) in Mendoza, Argentina, this work analyzes the results of the Primer Censo de Condiciones y Salud Laboral [First Census on Health and Working Conditions]. The census was conducted in late 2013 in two academic units (one at the high school level and the other at the university level), including 193 educators. The exploration set out to characterize the teaching staff and the conditions affecting their health, primarily with respect to psycho-social health. In order to do, so a self-administered questionnaire was applied, the dimensions of which were discussed in sensitivity workshops with educators who helped to formulate the data collection instrument. Among the primary results emerge the physical and emotional burnout of these highly skilled workers, owing to the combined effect of their committed response to the demands of their work and the deterioration (both material and symbolic) of the conditions in which they carry out that work.

  1. Hilos de agua, lazos de sangre: enfrentando la escasez en el desierto de Lavalle (Mendoza, Argentina)

    OpenAIRE

    L.M. Torres

    2008-01-01

    En el trabajo se analizan las posibles relaciones existentes entre las dinámicas de uso de los recursos naturales y las estrategias de localización de las unidades domésticas en el territorio, dentro de espacios rurales de desierto que poseen una oferta ambiental limitada. ¿Cómo, en el marco de qué estrategias, los grupos humanos convierten distintas porciones de la naturaleza en recurso natural? y ¿cómo usan y administran esos recursos en procura de asegurar su propia reproducción social? Pa...

  2. The use of hydrological models in the irrigated areas of Mendoza, Argentina

    NARCIS (Netherlands)

    Querner, E.P.; Morábito, J.A.; Manzanera, M.; Pazos, J.A.; Ciancaglini, N.C.; Menenti, M.

    1997-01-01

    A proper understanding of the interaction of irrigation and drainage canals with an aquifer system is necessary to improve the performance of irrigation. This mechanism must be studied with a detail sufficient to identify operational guidelines for specific portions of an irrigation and drainage

  3. Biotites from tuffs located in Mendoza, Argentina, seen by Moessbauer spectroscopy

    International Nuclear Information System (INIS)

    Saragovi, C.; Labenski de Kanter, F.; Kleiman, L.; Valentin, R.; Puglisi, C.

    1990-01-01

    Several natural biotite samples were studied by M.E., electron microprobe and XRD. The M.E. parameters allow to group them as oxybiotites, normal biotites, chloritized biotites and muscovitized biotites. Mechanisms of oxybiotite formation and processes undergone by the rocks are discussed. (orig.)

  4. A method for estimation of hydrological sensibility applied in Golfo San Jorge basin. Province of Chubut. Argentina; Un metodo para estimar la sensibilidad hidrologica aplicado en la cuenca del Golfo San Jorge. Provincia de Chubut. Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez, M. A.; Scatizza, C.; Rojo, M.; Preiato, S. A.; Hernandez, L.

    2009-07-01

    A method developed and used in an area of Chubut Province is described. The object of the method is to determine the underground and surficial hydrological sensitivity in order to select the site of petroleum facilities with the least possible environmental hydric risk. It is based on the conjunction of the GOD method used to assess the intrinsic aquifer vulnerability (original version) and the proposed La Plata Method (MLP) for the surficial hydrological sensitivity. The latter method assigns numerical values based on landforms (positive and negative), slope percent and seasonality of the water regime, using a complexive range scale from zero to one. The Surficial Sensitivity factor results from the average of the three indicators and includes five categories, from low to extreme values. For a global coverage in the underground and surficial terrestrial arches (geo environmental map) it is proposed to compare the GOD values with those of the MLP method using a GIS, through the mathematical overlapping of two raster layers (map algebra) in each map pixel. In addition to the cartographic display, attribute tables can be used to estimate the environmental pollution in soils and waters, existing infrastructure and location of new facilities and drillings. The Arc Map 9.1 program was used due to its capacity for a permanent and quasi-automatic updating of thematic mapping. The map corresponding to Cerro for the initial position 2007 is presented as an example. (Author) 6 refs.

  5. Petrological and geochemical characterization of the plutonic rocks of the Sierra de La Aguada, Province of San Luis, Argentina: Genetic implications with the Famatinian magmatic arc

    Directory of Open Access Journals (Sweden)

    E. Cristofolini

    2017-07-01

    Full Text Available This study presents a synthesis on the geology of the crystalline complex that constitute the Sierra de la Aguada, San Luis province, Argentine, from an approach based on field relations, petrologic and structural features and geochemical characteristic. This mountain range exposes a basement dominated by intermediate to mafic calcalkaline igneous rocks and peraluminous felsic granitoids, both emplaced in low to medium grade metamorphic rocks stabilized under low amphibolite facies. All this lithological terrane has been grouped in the El Carrizal-La Aguada Complex. Field relations, petrographic characterization and geochemical comparison of the plutonic rocks from the study area with those belonging to the Ordovician Famatinian suit exposed in the Sierra Grande de San Luis, suggest a genetic and temporal relation linked to the development of the Famatinian magmatic arc.

  6. Changes in soil organic matter under different land management in misiones province (Argentina Mudanças na matéria orgânica edafica sob diferentes manejos de solo na província de misiones (Argentina

    Directory of Open Access Journals (Sweden)

    Gabriel Agustín Piccolo

    2008-01-01

    Full Text Available Highly weathered tropical soils rapidly loose soil organic matter (SOM and may be affected by water erosion and soil compaction after deforestation and intensive cultivation. With the main objective to estimate the SOM balances in a subtropical soil we determined the dynamics of SOM in a degraded yerba mate (Ilex paraguaiensis Saint Hil. plantation introduced after deforestation and with elephant grass (Pennisetum purpureum L. as a cover crop. The study site was in Misiones, Argentina, and we use the natural 13C abundance methodology and a descriptive model. The study was conducted on three contiguous 50 x 100 m plots of a typic Kandihumult soil with: (i native forest, (ii 50 years of continuous yerba mate monoculture with intensive tillage, and (iii yerba mate associated with elephant grass as a cover crop and no tillage. We determined bulk density, carbon (C, nitrogen (N and 13C content of the soil (0 - 0.05, 0.05 - 0.15 m layers and the grass biomass. Yerba mate monoculture reduced soil C and N content as well as porosity at 0 - 0.15 m depth by 43 and 23%, respectively, as compared to the native forest. After ten years of yerba mate - elephant grass association soil C and N contents at the same depth increased by 19 and 12%, respectively, compared to the yerba mate monoculture, while soil porosity remained similar. Total C input,13C, and soil organic C were incorporated into a three compartment model to evaluate elephant grass C dynamics. Through the natural 13C abundance methodology we tracked the elephant grass C incorporation and the "old" soil C loss, and determined the model parameters - humification (k1 and mineralization (k coefficients and stable C (Cs- unambiguously. The high k1 and k predicted by the model are probably explained by elephant grass root system incorporation under no tillage and humid subtropical climate, respectively. In soil under yerba mate monoculture, Cs was counted as 91% of the total soil organic C.Os solos

  7. Epidemiología de la tripanosomiasis americana en el Norte de Corrientes Epidemiology of American trypanosomiasis in the North of Corrientes province, Argentina

    Directory of Open Access Journals (Sweden)

    María Esther Bar

    2010-04-01

    Full Text Available El objetivo de esta investigación fue evaluar la presencia de triatominos en ecotopos domésticos y extradomésticos, determinar el índice de infección de los triatominos y estimar la prevalencia humana de anticuerpos contra el Trypanosoma cruzi. Los muestreos se llevaron a cabo en viviendas seleccionadas al azar en áreas rurales (departamentos Mburucuyá en otoño 2007 y Berón de Astrada en verano 2008 de Corrientes, Argentina. El diagnóstico de la infección chagásica se realizó a voluntarios mediante las pruebas de hemaglutinación indirecta, inmunofluorescencia indirecta y ensayo inmunoenzimático. Se exploraron 32 viviendas y 33 peridomicilios en Mburucuyá, y 30 viviendas y 25 peridomicilios en Berón de Astrada. En Mburucuyá la infestación del peridomicilio por Triatoma sordida alcanzó un 3.0%, capturándose 19 ninfas en un gallinero. La infestación del peridomicilio en Berón de Astrada fue 4.0%, detectándose una hembra y 58 huevos en un nidal de ave. Tanto la hembra como las ninfas resultaron negativas al T. cruzi. La prevalencia de seropositivos humanos al T. cruzi fue 5.2% (4/77 en Mburucuyá y 14.3% (11/77 en Berón de Astrada. En el domicilio no se confirmó infestación por triatominos y en el peridomicilio el índice de infestación fue bajo. Es necesario implementar nuevas estrategias de control vectorial, especialmente para las especies que habitan en estructuras peridomésticas y biotopos silvestres. La seroprevalencia fue menor a la observada en investigaciones previas en las áreas rurales de Corrientes. La ausencia de seropositivos de 0-10 años indica que la transmisión vectorial está interrumpida.The aim of this investigation was to evaluate triatomine colonization in domestic and extradomestic ecotopes, to determine triatomines infection index and to assess human prevalence of anti Trypanosoma cruzi antibodies at Berón de Astrada and Mburucuyá Departments, Corrientes, Argentina. Samplings were performed

  8. Electric structure of the Copahue Volcano (Neuquén Province, Argentina), from magnetotelluric soundings: 1D and 2D modellings

    Science.gov (United States)

    Mamaní, M. J.; Borzotta, E.; Venencia, J. E.; Maidana, A.; Moyano, C. E.; Castiglione, B.

    2000-05-01

    Four magnetotelluric soundings were carried out in 1993 in the region of the Copahue active volcano located at the border between Chile and Argentina (37°45'S, 71°18'W). Three soundings were located inside the caldera of the ancient stratovolcano (east of Copahue) and the fourth outside it. The soundings inside the caldera were situated at about 6, 11, and 14 km from the volcano. Digital data were obtained covering the range of periods from 1 sec to 10,000 sec using induction coils and a flux-gate magnetometer to obtain the magnetic data and Cu-SO 4Cu electrodes for electric field measurements. The apparent resistivity curves corresponding to principal directions were analyzed in conjunction with the geological background in order to eliminate distortion — which is very important in this hot volcanic region. Then, 1D modellings were performed using the "normal" curves — i.e., curves without distortions. Using the apparent resistivity curves with distortions, 2D modelling was also performed along a profile perpendicular to the regional tectonic trend suggested by MT soundings into the caldera. Results show low resistivity values of about 3-15 Ωm between 9 km to 20 km depth in the crust, suggesting high temperatures, with minimum values of about 700°C with partially melted zones in the upper crust between 9 km to 20 km depth under the caldera. The presence of a possible sulphide-carbonaceous layer (SC layer) in the upper basement could play an important role in lowering the electrical resistivities because of its high electronic conductivity.

  9. Eficacia de algunos biocidas contra estafilococos hospitalarios sensibles y resistentes a la meticilina en la provincia de Buenos Aires, Argentina Efficacy of biocides against hospital isolates of Staphylococcus sensitive and resistant to methicillin, in the province of Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Mirta Beatriz Reynaldo

    2004-09-01

    Full Text Available OBJETIVOS: Evaluar cómo responden los estafilococos hospitalarios sensibles y resistentes a la meticilina ante la acción de diferentes antisépticos y desinfectantes empleados habitualmente en los hospitales de la Provincia de Buenos Aires, Argentina. Demostrar la eficacia de esas sustancias mediante la determinación de sus concentraciones bactericidas eficaces, así como analizar si existe correlación entre la resistencia a biocidas y la resistencia a la meticilina en esta población bacteriana. MÉTODOS: Se evaluó la acción de siete biocidas con 25 cepas de estafilococos nosocomiales sensibles y resistentes a la meticilina y una cepa de colección, Staphylococcus aureus ATCC 6538. Las cepas hospitalarias provienen de dos hospitales de máxima complejidad y fueron obtenidas, durante los meses de abril de 2000 a mayo de 2002, de muestras clínicas (hemocultivo, urocultivo, punta de catéter y abceso pertenecientes a pacientes de ambos sexos, internados y ambulatorios. Después del aislamiento de dichas cepas, determinamos la sensibilidad a antibióticos mediante el método de difusión en agar de Kirby y Bauer. Para estudiar la acción de los biocidas de uso hospitalario sobre estas cepas, empleamos el ensayo de Kelsey-Sykes, que permite establecer las concentraciones bactericidas eficaces de tales compuestos. RESULTADOS: Los resultados muestran que la respuesta de las cepas hospitalarias resistentes y sensibles a la meticilina varía con respecto a la cepa de colección. El digluconato de clorhexidina, la yodopovidona, la tintura de yodo débil y el glutaraldehído alcalino fueron eficaces contra la mayoría de las cepas, independientemente de su resistencia o sensibilidad a los antibióticos. CONCLUSIONES: Estas evaluaciones no indican ninguna asociación entre la resistencia a la meticilina y la resistencia a los biocidas evaluados. Asimismo, apuntan a la necesidad de seguir investigando para valorar la eficacia de los agentes qu

  10. ESTRATEGIAS ALIMENTARIAS Y DE SUBSISTENCIA PREHISPÁNICA EN EL CENTRO-OESTE DE MENDOZA: CONSUMO Y DESCARTE EN EL SITIO ARQUEOLÓGICO AGUA AMARGA / Food and subsistence strategies in the prehispanic Mendoza Midwest: Consumption and discard at Agua Amarga

    Directory of Open Access Journals (Sweden)

    María José Ots

    2011-12-01

    Full Text Available Se presenta el análisis de un depósito de desechos asociados a la alimentación en Agua Amarga (departamento de Tupungato, en el Centro Oeste de la provincia de Mendoza. Agua Amarga es un sitio residencial de actividades múltiples ubicado en el piedemonte del Valle de Uco, a 1000 msnm. Los fechados obtenidos sobre cerámica y restos vegetales del contexto lo ubican en el período tardío y de dominación incaica regional. El propósito del trabajo es estudiar estrategias de procesamiento, consumo y descarte de alimentos que asimismo contribuyan a la discusión sobre las estrategias de subsistencia prehispánicas en el Norte y Centro de Mendoza. Se aplican métodos y técnicas específicos para la identificación y el análisis de los restos, y se proponen hipótesis alternativas sobre dicho contexto. Los materiales recuperados, la mayoría de ellos termoalterados y muy fragmentados, incluyen macrorrestos arqueobotánicos (principalmente Zea mays y Phaseulus vulgaris, restos óseos (algunos elementos identificados como Lama sp., fragmentos de distintos recipientes cerámicos y de artefactos de molienda.  Finalmente, se discuten prácticas asociadas con la alimentación y la subsistencia, con especial referencia a la producción y consumo de maíz en el área.   Palabras clave: alimentación, subsistencia, maíz, Mendoza   Abstract We present the study of a refuse deposit associated with feeding activities in the archaeological site Agua Amarga (Tupungato department, Middle West of Mendoza province. This is a residencial site of multiple activities located in the foothill in Valle de Uco, to 1000 masl. We dated ceramics and vegetal remains that locate the context in the late period and during regional inca domination. Our goal is to study strategies of processing, consumption and discarding of foods that also contribute in the discussion on the prehispanic strategies of subsistence in the North and Center of Mendoza province. In this paper

  11. First record of a Late Holocene fauna associated with an ephemeral fluvial sequence in La Pampa Province, Argentina. Taphonomy and paleoenvironment

    Science.gov (United States)

    Montalvo, Claudia I.; Fernández, Fernando J.; Bargo, M. Susana; Tomassini, Rodrigo L.; Mehl, Adriana

    2017-07-01

    The first Late Holocene mammal assemblage (mainly micromammals) of La Pampa Province was found in Quehué paleontological site, associated with an ephemeral fluvial sequence. Taphonomical features of the collected materials were evaluated in order to increase the knowledge of the ancient vertebrate communities of this area and to interpret the origin of the assemblages. Field data and taphonomic analysis of the specimens, suggested the recognition of three assemblages with different taphonomic histories: 1) large to medium sized mammals; 2) micromammals found inside burrows or associated with them; and 3) discrete accumulations of micromammals and other microvertebrates (amphibians, reptiles and birds). Additionally, the paleoenvironmental analysis based mainly on the record of small mammals reflected the predominance of semi-arid conditions associated with a mosaic of open shrub steppe, grasslands and xerophytic forests of Espinal, similar to the present one in the Quehué valley area. However, the presence of Lestodelphys halli in the Quehué site during the Late Holocene (∼1.2 ky BP), suggests a more heterogeneous environment and perhaps relative colder and drier than current times, which are featured by more mesic conditions and anthropic activities, mainly agriculture and livestock during the last centuries.

  12. Forty years of soil degradation in vertic argiudolls in Entre Ríos province, Argentina Cuarenta años de degradación de argiudoles vérticos en la provincia de Entre Ríos

    Directory of Open Access Journals (Sweden)

    Diego J Cosentino

    2007-12-01

    Full Text Available In the last decade the land use in Entre Ríos Province (Argentina has suffered a very important increase characterized by an intensive and continuous agriculture in a regionwith high watererosion susceptibility. Fortypercent of province surface sufferswater erosion in different degrees. This study was undertaken to assess the extent and nature of degradation in some physicaland chemical properties of vertic Argiudolls through the comparison of a pristine situation and three situations with increasingyears of land use after deforestation. Organic carbon (OC, light carbon (LC, pH, electrical conductivity (EC, labile organic phosphorus (Plo, structural stability (DMWD, size aggregate distribution in the A horizonwere determined. After 40 years from deforestation the OC, LC, Plo, decreased 26, 72 and 17% respectively meanwhile EC and pH had minor variations. The structural stability declined with time and there was a significant correlation between organic carbon and DMWD (r = - 0.985; P En la última década el uso de la tierra en la provincia de Entre Ríos (Argentina ha sufrido un incremento muy importante basado en la agricultura contínua e intensiva en una región con alta susceptibilidad de erosión hídrica. Cuarenta por ciento de la superficie de la Provincia posee erosión hídrica de diferentes grados de severidad. Este trabajo fue llevado a cabo para examinar el grado y la naturaleza de la degradación en algunas propiedades físicas y químicas en suelos vérticos a través de la comparación de una situación prístina con tres situaciones con diferentes años de agricultura luego de su deforestación. El carbono orgánico(OC, carbono liviano(LC, pH, conductividad eléctrica (EC, fósforoorgánico lábil (Plo, estabilidad estructural (DMWD y la distribución del tamaño de agregados en el horizonte A fueron determinados.Luego de 40 años de la deforestación el OC, LC y el Plo, disminuyeron 26, 72 y 17% respectivamente, comparados con

  13. Historia de uso del suelo y contenido de micronutrientes en argiudoles del centro de la provincia de Santa Fe (Argentina History of soil use and micronutrient content in argiudolls of the center of the Santa Fe province (Argentina

    Directory of Open Access Journals (Sweden)

    María Celeste Miretti

    2012-07-01

    Full Text Available Las investigaciones realizadas en la zona Central de la provincia de Santa Fe en relación con la concentración y biodisponibilidad de micronutrientes en los suelos son muy limitadas, por lo que los objetivos del presente trabajo fueron: a determinar si se produjo una disminución en los contenidos de micronutrientes en Argiudoles del centro de la provincia de Santa Fe como consecuencia del uso a que fueron destinados y b correlacionar la biodisponibilidad con propiedades del suelo que se conoce que fueron afectadas por la intensificación de los sistemas productivos (MO, pH. Se trabajó en el departamento Las Colonias (Santa Fe, en suelos Argiudoles. Se colectaron muestras compuestas de 20 lotes en condiciones prístinas (CP, 22 lotes con uso ganadero dedicados a la producción láctea (G, 24 lotes con historia agrícola-ganadera (AG y 20 lotes con prolongada historia agrícola (A, que se utilizaron para determinar: pH, carbono orgánico oxidable (CO, boro (B, cobre (Cu, hierro (Fe, manganeso (Mn y cinc (Zn. Los resultados indican que el pH no varió entre las situaciones estudiadas; los valores de CO disminuyeron (40% con la intensificación de la agricultura; la concentración de B y Zn se redujo en un 50% de la condición prístina a los lotes con larga historia agrícola; el Cu no sufrió alteraciones; Fe y Mn no muestran una tendencia clara de cambio en función del uso del suelo. En algunos casos podrían ocurrir deficiencias de Zn, por lo que debería controlarse rutinariamente su concentración, especialmente en los sistemas intensivos, para asegurar una disponibilidad adecuada a las necesidades de los cultivos. En todos los sistemas de uso analizados los tenores de micronutrientes presentaron elevada variabilidad.The studies related to the concentration and bioavailability of soil micronutrients are very limited for the central region of Santa Fe province, reason for which the objectives of the current research were: a to determine

  14. Diversidad de Anamorfos de Ascomycota en bosques nativos de Celtis tala (Ulmaceae en la Provincia de Buenos Aires, Argentina Diversity of anamorphic fungi in Celtis tala (Ulmaceae native forest from Buenos Aires province, Argentina

    Directory of Open Access Journals (Sweden)

    Natalia Allegrucci

    2007-07-01

    Full Text Available En el presente trabajo se analizó la diversidad de microhongos que constituyen la comunidad fúngica saprótrofa (anamorfos de Ascomycota presente en hojarasca y suelo en bosques nativos de Celtis tala (tala en el partido de Magdalena, provincia de Buenos Aires. Se realizaron muestreos estacionales durante dos años (2004-2005 y se aislaron e identificaron los hongos presentes. Se calculó la frecuencia relativa porcentual de cada taxón; estos datos fueron utilizados para evaluar la diversidad fúngica mediante el cálculo del Indice de Diversidad de Shanon y Weaver ( H '. Para discriminar las comunidades fúngicas se utilizó el coeficiente de similitud de Sorensen ( S '. Se identificaron 104 taxones de anamorfos de Ascomycota, de los cuales 54 fueron aislados de hojarasca y 58 de suelo, registrándose 8 especies en común para ambos tipos de muestra. De las especies compartidas, las que presentaron frecuencias más altas para hojarasca fueron las menos representadas en suelo y viceversa. El resultado del cálculo del coeficiente de similitud de Sorensen fue de 0.14, indicando que la comunidad de hongos saprótrofos que crece en la hojarasca de tala está integrada por diferentes especies a las que caracterizan la micobiota del suelo de la misma área. No se encontraron diferencias significativas en el índice de diversidad.In this paper we analyze the diversity of species that compose the saprotrophic (anamorphic Ascomycota fungi community in the leaf litter and soil in Celtis tala forest in Magdalena , located in the province of Buenos Aires . Seasonal samples were taken during two years (2004-2005, and fungi were isolated and identified. The relative frequencies of fungi were calculated. To compare the similarity of the fungi composition between different habitats, Sorensen's index of similarity (S´ was applied. The frequencies of occurrence of these fungi were recorded and Shannon Weaver index (H´ was applied to evaluate fungal

  15. Parasitismo larval de Crocidosema (=Epinotia aporema (Lepidoptera: Tortricidae en el noreste de la provincia de Buenos Aires (Argentina Larval parasitism of Crocidosema (=Epinotia aporema (Lepidoptera: Tortricidae in north-eastern Buenos Aires province (Argentina

    Directory of Open Access Journals (Sweden)

    Gerardo Liljesthröm

    2005-07-01

    Full Text Available En la interacción huésped-parasitoide las plantas suelen emitir señales capaces de aumentar la eficiencia de los parasitoides. Las larvas de Crocidosema (=Epinotia aporema (Walsingham se alimentan endofíticamente de leguminosas herbáceas y constituyen una plaga de la soja (Glycine max Merrill. En este estudio analizamos el parasitismo larval de C. aporema en Melilotus albus Medikus, Galega officinalis L, Lupinus albus L y G. max, en el noreste de Buenos Aires. La densidad larval fue mayor en L. albus (109,2 larvas/m² que en las restantes leguminosas: 3,7; 6,9 y 11,3 en M. albus, G. officinalis y G. max, respectivamente. Sin embargo, el parasitismo y número de especies parasitoides fueron menores en L. albus (9,5% por el ectoparasitoide generalista Bracon sp. que en M. albus (32,6%, Bracon sp. y los endoparasitoides Trathala sp.y Bassus sp.; G. officinalis y G. max (26,4% y 50,6% respectivamente, con Trathala sp. y Bracon sp. en ambas. Lupinus albus fue la única especie vegetal que reaccionó a la alimentación de C. aporema con producción de exudados pegajosos y olorosos que podrían haber repelido los endoparasitoides, actuando como un refugio parcial para C. aporema. Además, al ser positivamente seleccionada por C. aporema, esta leguminosa podría utilizarse como franja trampa para su control en cultivos de soja, de manera compatible con tácticas de control biológico por conservación de enemigos naturales.In host-parasitoid interactions, parasitoid efficiency may be increased by different quantity and quality of plant signals. Crocidosema (=Epinotia aporema (Walsingham is a pest on soybean, with larvae feeding endophitically on various herbaceous leguminosae. In this study we analyzed larval parasitism of C. aporema on Melilotus albus Medikus, Galega officinalis L, Lupinus albus L and Glycine max Merrill in the north-east of the Buenos Aires province. Larval density was higher on L. albus (109,2 larvae/m², than on the other

  16. Propiedades fisicoquímicas en suelos predominantes del noroeste de Santa Fe y sur de Santiago del Estero, Argentina Physicochemical properties of predominant soils in Northwestern Santa Fe and Southern Santiago del Espero provinces, Argentina

    Directory of Open Access Journals (Sweden)

    Germán Roberto Revelli

    2010-12-01

    Full Text Available Un total de 175 muestras de suelos fueron recolectadas en la zona noroeste de Santa Fe y sur de Santiago del Estero durante el período 2001-2009. Se realizaron análisis fisicoquímicos (pH, Nitrógeno Total, Nitrógeno Nítrico, Nitrato, Fósforo, Potasio, Azufre y Materia Orgánica con el objetivo de categorizar las mismas en función a su calidad y aptitud para uso agrícola-ganadero. El perfil de los suelos analizados destaca deficiencias en Nitrógeno (NT = 0,127 ± 0,032%, N-NO3-= 13 ± 10,349 mg kg-1 y NO3- = 56 ± 45,830 mg kg-1 y un potencial de hidrógeno levemente ácido (pH = 6,4 ± 0,623, observándose una marcada tendencia a aumentar la acidificación en los últimos años. La fertilización equilibrada adquiere importancia estratégica a la hora de obtener óptimos rendimientos en los suelos de la zona, y la incorporación de prácticas de manejo conservadoras tales como labranza reducida, aumento de materia orgánica y rotación de cultivos son fundamentales para el desarrollo sostenible de la región.In recent years, there has been an increasing interest in evaluating soil quality and health. The resource soil is a fundamental component of the biosphere, participating in the production of food, fibers and energy and consequently impacting on the environmental quality. The indiscriminate expansion of agriculture added to the inadequate management in many areas has led to the deterioration of soil structure and to the consequent reduction in organic matter levels, affecting the soil chemical and physical fertility. A total of 175 soil samples were collected in the northwestern area of Santa Fe and in the southern part of Santiago del Estero provinces during the 2001-2009 period. Physicochemical analyses were carried out (pH, Total Nitrogen, Nitrate- Nitrogen, Nitrate, Phosphorus, Potassium, Sulfur and Organic Matter with the objective of categorizing the soil samples according to fertility and aptitude for agricultural-cattle use

  17. Essential oil of Azorella cryptantha collected in two different locations from San Juan Province, Argentina: chemical variability and anti-insect and antimicrobial activities.

    Science.gov (United States)

    López, Sandra; Lima, Beatriz; Aragón, Liliana; Espinar, Luis Ariza; Tapia, Alejandro; Zacchino, Susana; Zygadlo, Julio; Feresin, Gabriela Egly; López, María Liza

    2012-08-01

    The essential oils (EOs) of two populations of Azorella cryptantha (Clos) Reiche, a native species from San Juan Province, were obtained by hydrodistillation in a Clevenger-type apparatus and characterized by GC-FID and GC/MS analyses. The compounds identified amounted to 92.3 and 88.7% of the total oil composition for A. cryptantha from Bauchaceta (Ac-BAU) and Agua Negra (Ac-AN), respectively. The EO composition for the two populations was similar, although with differences in the identity and content of the main compounds and also in the identity of minor components. The main compounds of the Ac-BAU EO were α-pinene, α-thujene, sabinene, δ-cadinene, δ-cadinol, trans-β-guaiene, and τ-muurolol, while α-pinene, α-thujene, β-pinene, γ-cadinene, τ-cadinol, δ-cadinene, τ-muurolol, and a not identified compound were the main constituents of the Ac-AN EO, which also contained 3.0% of oxygenated monoterpenes. The repellent activity on Triatoma infestans nymphs was 100 and 92% for the Ac-AN and Ac-BAU EOs, respectively. Regarding the toxic effects on Ceratitis capitata, the EOs were very active with LD(50) values lower than 11 μg/fly. The dermatophytes Microsporum gypseum, Trichophyton rubrum, and T. mentagrophytes and the bacterial strains Escherichia coli LM(1), E. coli LM(2), and Yersinia enterocolitica PI were more sensitive toward the Ac-AN EO (MIC 125 μg/ml) than toward the Ac-BAU EO. This is the first report on the composition of A. cryptantha EO and its anti-insect and antimicrobial properties. Copyright © 2012 Verlag Helvetica Chimica Acta AG, Zürich.

  18. [Presence of Triatoma infestans in relation to various cultural patterns in a rural population of the Province of San Juan, Argentina].

    Science.gov (United States)

    Valvé, S; Schweigmann, N; Petersen, R; García Piñeiro, C; Travaini, A; Vázquez, F; Solarz, N; Wisnivesky-Colli, C

    1991-01-01

    This paper reports results from a punctual epidemiological survey performed in San Juan, at Bermejo, a rural village located 100 km east from the provincial capital, in December 1987. The village had been rebuilt after almost complete destruction by an earthquake, in 1977. According to a census performed by local Primary Health Care Agents, there were 82 households, where 72 (88%) of them were inhabited, with a total human population of 198 people. Forty-eight from those inhabited dwellings (67%) were visited, and a general questionnaire was completed. Information gathered included, sex, age, working activity, number of people and domestic animals at the house, construction patterns of houses and outdoor premises, resting habits of animals, specially dogs, domestic use of insecticides and migration patterns of inhabitants. A timed collection of triatomines (man-hour method) was undertaken in 17 out of 48 of the visited households. Sampled triatomines were kept and classified by collection site, instar, and sex at the field. Species identification, microscopical examination of fecal contents to detect trypanosomes and blood-meals identification, were performed at the laboratory. Sixty-nine per cent (33/48) of the dwellings were "ranchos" with mud-brick ("adobe") and cane walls, roofs made of cane and mud dirt floors. The remainder were as follows: 11 (23%), partially improved houses and 4 (8%) had brick walls and were tiled or had zinc roofs. Data of migration patterns of local population were obtained in 31 (65%) out of 48 households. Seasonal movements within San Juan Province, mainly related to vintage were reported in 20/31 (65%) families.(ABSTRACT TRUNCATED AT 250 WORDS)

  19. Estimación del número de reproducibilidad basal para la leishmaniasis tegumentar americana en dos localidades del nordeste de la Provincia de Salta, Argentina Estimation of the basic reproducibility number for American tegumentary leishmaniasis in two sitesin northeastern Salta Province, Argentina

    Directory of Open Access Journals (Sweden)

    Juan Carlos Rosales

    2007-11-01

    Full Text Available Un modelo matemático determinístico del tipo SIR para tres hospedadores es aplicado para analizar el proceso de transmisión de la leishmaniasis tegumentar americana, en las localidades Río Blanco y paraje Las Carmelitas, ubicadas en el Nordeste de la Provincia de Salta, Argentina, del mismo se deriva la expresión para el número de reproducibilidad basal Ro. Se implementa el modelo en ambiente MATLAB, en base a datos de las zonas endémicas se realizan simulaciones y se obtienen estimaciones numéricas de Ro. Para el caso de Río Blanco hemos obtenido el valor Ro = 4,689, mientras que para el paraje Las Carmelitas se obtuvo Ro = 1,948. Estudiando numéricamente el modelo también se estima la fuerza de infección, obteniendo para las localidades mencionadas 0,239 y 0,171 (unidad 1/año, respectivamente. Las simulaciones muestran que en la localidad de Río Blanco la fase endémica resulta más sostenida que la fase inter-epidémica presentada en el paraje Las Carmelitas. Las estimaciones obtenidas para estos parámetros epidemiológicos indican donde las instituciones del Ministerio de Salud Pública de la Provincia y de la Nación tendrán más dificultad para el control y la erradicación de la enfermedad.A SIR-type deterministic mathematical model for three hosts is applied to analyze the transmission process for American tegumentary leishmaniasis in Río Blanco and Las Carmelitas, located in northeastern Salta Province, Argentina, and to derive the expression for the baseline reproducibility number Ro. The model is implemented in the MATLAB environment, and based on data from endemic areas, simulations are performed and numerical estimations of Ro are obtained. Río Blanco shows Ro = 4.689 and Las Carmelitas Ro = 1.948. By studying the model numerically, we also estimate the force of infection, namely 0.239 and 0.171 (unit 1/year, respectively. The simulations show that in Río Blanco, the endemic phase was more sustained than the inter

  20. Leaf anatomy of Medicinal Shrubs and Trees from Gallery Forests of the Paranaense Province (Argentina: Part 1 Anatomía foliar de árboles y arbustos medicinales de las selvas en galería de la provincia Paranaense (Argentina. Parte 1

    Directory of Open Access Journals (Sweden)

    Ana M. Arambarri

    2006-12-01

    Full Text Available Sixty two species of shrubs and trees belonging to 28 families inhabiting gallery forests of the Paranaense biogeographic province (Argentina have been cited with medicinal properties. The aim of this study was to provide a tool to recognize these taxa from fragmented leaf samples. Fresh material and hydrated herbarium specimens fixed in FAA were surveyed. The main differential traits are: hypodermis presence (e.g. Myrceugenia glaucescens ; stomata and trichome types (e.g. ciclocytic stomata in Baccharis spp.; cystolith-like structure in trichomes in Aloysia gratissima var. gratissima ; midvein transection outlines (e.g. midvein convex and keel-shaped on the adaxial side in Allophylus edulis , mesophyll of the leaf blade (e.g. indifferentiated in Poiretia tetraphylla ; presence of idioblastic sclereids (e.g. in the petiole of Rollinia emarginata , presence and types of crystals (e.g. crystal sand in Sambucus australis ; presence of secretory structures (e.g. large secretory cavities in Malvaceae and Myrtaceae. We can conclude that the leaf features have diagnostic value to identify species. As a result, we offer a key to distinguish these 62 species and illustrations to clarify it. Ecological interpretation of leaf structures is also given.Entre los árboles y arbustos que forman las selvas en galería de la provincia biogeográfica Paranaense (Argentina, 62 especies pertenecientes a 28 familias son citadas como medicinales. El objetivo de este trabajo es proveer elementos para el reconocimiento de estos taxones a partir de hojas fragmentadas. Para el estudio se utilizó material fresco y ejemplares de herbario recuperados y fijados en FAA. Algunos de los principales caracteres de identificación son: la presencia de una hipodermis (e.g. en Myrceugenia glaucescens ; los tipos de estomas (e.g. los estomas ciclocíticos en Baccharis spp. y de tricomas (e.g. los tricomas cistolíticos en Aloysia gratissima var. gratissima ; el contorno de la vena

  1. Obtención de un índice de riesgo de erosión eólica y su aplicación en la provincia de Buenos Aires, Argentina Erosion risk index attainment and its application in the Buenos Aires province, Argentina

    Directory of Open Access Journals (Sweden)

    Susana Goldberg

    2004-12-01

    of the wind erosion risk in Buenos Aires Province, Argentina.

  2. Temporal and geochemical evolution of Miocene volcanism in the Andean back-arc between 36°S and 38°S and U-series analyses of young volcanic centers in the arc and back-arc, Argentina

    DEFF Research Database (Denmark)

    Dyhr, Charlotte Thorup

    New 40Ar/39Ar, major and trace element, and Sr, Nd and Pb isotopic data for the c. 24-7 Ma volcanic rocks from the Andean back-arc (35°S – 38°S) in the Mendoza and Neuquén (Argentina) regions shed light on the Miocene evolution of the back-arc of the Southern Volcanic Zone. Incipient shallowing......-Sr-Pb isotopic compositions. The arc-like component that dominates the geochemistry of the Palaoco rocks is absent in both the Early Miocene and the Pliocene-Pleistocene in the same area. Young volcanic Provinces in the main arc, retro-arc and back-arc are further investigated by U-series analyses which confirm...... the fluid-enriched nature of arc-related rocks (U-excess are found in most rocks) and the more OIB-like nature of the Payún Matrú complex (Th-exsess is observed in all rocks). The fluid addition to the mantle source is modeled revealing timescales of 10 – 100 ka for the fluid enrichment. For the back...

  3. Fluctuación poblacional del minador de la hoja de los cítricos y su parasitoide exótico Ageniaspis citricola en la provincia de Tucumán, Argentina Population fluctuation of the citrus leafminer and its imported parasitoid, Ageniaspis citricola, in the province of Tucumán, Argentina

    Directory of Open Access Journals (Sweden)

    Lucía Goane

    2007-12-01

    Full Text Available La presencia del minador de los cítricos Phyllocnistis citrella Stainton en la provincia de Tucumán, Argentina, planteó nuevos problemas para el manejo fitosanitario de las quintas cítricas en producción. Actualmente una de las principales herramientas de control de esta plaga es el parasitoide específico Ageniaspis citricola Logvinovskaya, introducido desde Perú en 1998. Con el propósito de definir estrategias de manejo adecuadas para esta plaga, se evaluó la fluctuación poblacional del minador de los cítricos y el parasitismo producido por A. citricola en diferentes puntos de la provincia. Para ello, se realizaron muestreos quincenales entre los meses de noviembre y abril durante cuatro campañas cítricas consecutivas en plantaciones de limonero ubicadas en la zona norte y sur de Tucumán. La infestación del minador se calculó a partir de la observación de brotes con hojas tiernas susceptibles al ataque, y el parasitismo se evaluó analizando cámaras pupales del minador tomadas de hojas maduras. En la zona norte de la provincia la infestación del minador alcanzó valores más elevados comparados con la zona sur. Las mayores tasas de parasitismo de A. citricola registradas en la zona sur, resultaron en una disminución anticipada de la infestación del minador, la cual tuvo lugar a mediados del verano. En esta última, los niveles de parasitismo de A. citricola fueron superiores. La temperatura media fue el factor meteorológico que mejor correlacionó con la fluctuación del minador, y la humedad relativa, con el parasitismo de A. citricola.Presence of citrus leafminer Phyllocnistis citrella Stainton in Tucumán province, Argentina, raised new problems for the phytosanitary management of citrus producing orchards. At present, one of the main tools used to control this pest is the specialized parasitoid Ageniaspis citricola Logvinovskaya, imported from Perú in 1998. With the aim to define adequate management strategies to

  4. Mapeo de desmontes en áreas de bosque nativo de la provincia de Entre Ríos, Argentina / Mapping of forest clearance in natural areas of Entre Ríos province, Argentine

    Directory of Open Access Journals (Sweden)

    Francisco Darío Maldonado

    2012-10-01

    Full Text Available El objetivo de este trabajo fue evaluar la aplicación de una metodología de detección y monitoreo de los desmontes, resistente a la irregularidad de la adquisición de imágenes en la región del Espinal entrerriano. El monitoreo de los cambios de uso y cobertura de las tierras es actualmente necesario para la política gubernamental de manejo y conservación de los recursos naturales. El área de estudio fue el Departamento Feliciano al norte de la Provincia de Entre Ríos, región noreste de Argentina. La vegetación es la típica formación arbórea del Espinal entrerriano sometido a la actividad ganadera extensiva. La metodología usó imágenes Landsat TM para formar un paquete multitemporal de bandas espectrales de la imagen de la segunda fecha y una banda intensidad del cambio obtenida por la técnica RCEN. Sobre este paquete se aplicó una técnica de “segmentación de imágenes por crecimiento de regiones” con semillado manual. Finalmente, se realizó el agrupamiento temático basado en la interpretación visual. En total, fueron detectados 1680ha desmontadas entre agosto de 2009 y diciembre de 2010, y 1140ha desmontadas entre diciembre de 2010 y abril de 2011. La segmentación de imágenes con bandas “intensidad del cambio” con semillado manual obtuvo buenos resultados para la detección de desmontes. Este resultado fue corroborado por la fiscalización in situ de los organismos gubernamentales.AbstractThe objective of this study was to evaluate the application of a methodology for detecting and monitoring forest clearance. The methodology should be unaffected to irregular image acquisition in the region of the “Espinal” (thorn forest in northeastern Argentina. Monitoring changes in land use and cover is needed for government policies of conservation and management of natural resources. The study area was the Department Feliciano northern of Entre Rios province. The typical vegetation is Espinal thorn forest, subjected

  5. Economic evaluation of a 100% smoke-free law on the hospitality industry in an Argentinean province Evaluación económica sobre las ventas del sector gastronómico después de una ley de ambientes 100% libres de humo en una provincia argentina

    Directory of Open Access Journals (Sweden)

    Carlos Candioti

    2012-06-01

    Full Text Available OBJECTIVES: To assess the economic impact of a 100% smoke-free law on bars and restaurants in an Argentinean province. MATERIALS AND METHODS: We conducted a time series analysis of restaurant and bar revenues in the province of Santa Fe 31 months before and 29 months after the implementation of the 100% smokefree environment law. The neighboring province of Entre Rios without smoking restrictions at the time of this study, was used as the control province. RESULTS: Average taxable revenues post-legislation in the province of Santa Fe as a whole and in the two most important cities were higher when compared to the total provincial revenue pre-legislation. No significant differences were observed with the total revenue from the province of Entre Rios. CONCLUSIONS: We found no statistically significant evidence that the 100% smoke-free environment legislation in the province of Santa Fe, Argentina, had a negative impact on the revenues of local bars and restaurants.OBJETIVOS: Evaluar el impacto económico de una ley de ambientes 100% libres de humo de tabaco sobre las ventas de bares y restaurantes en una provincia argentina. MATERIAL y MÉTODOS: Se realizó un análisis de serie temporal sobre las ventas de bares y restaurantes en Santa Fe, 31 meses antes y 29 meses después de la ley. Se utilizó a la provincia vecina de Entre Ríos, sin ley en el momento del estudio, como provincia control. RESULTADOS: El promedio de ventas post-ley tanto en la provincia de Santa Fe como en sus dos ciudades más importantes fue mayor al compararse con el promedio provincial total pre-ley. No se observaron diferencias significativas en las ventas totales al ser comparadas con la provincia de Entre Ríos. CONCLUSIONES: No se demostró evidencia estadísticamente significativa sobre el impacto negativo de la legislación de ambientes 100% libres de humo sobre las ventas de bares y restaurantes en la provincia de Santa Fe.

  6. Petrografic description of some igneous rocks from the Cordillera of South Mendoza, in the Argentine

    NARCIS (Netherlands)

    Kuenen, Ph.H.

    1926-01-01

    Comparatively little is yet known of the intricate igneous history of the Cordillera of South Mendoza. Almost all the knowledge we have is due to the field- and stratigraphical work of Dr. H. Gerth of Leiden (bibl. 1 and 2), and the petrographic studies of Dr. H. G. Backlund (bibl. 3 and 4) on the

  7. 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.)

  8. The Bureaucratization of Social Policies. The Management of Rural Food Programs in Argentina

    Directory of Open Access Journals (Sweden)

    Lorena Poblete

    2008-01-01

    Full Text Available Between 1995 and 1999 the reform of the wine production sector caused significant social changes in Mendoza (Argentina. The restructuring of the paternalistic model which had been the core of the old system of productivity made the rural workers to experience a complete lack of references. They went from a well—known and controlled poverty to a system of social instability in which even the basic resources were missing. The State, unable to satisfy the claims made by the rural workers, created a bureaucratic mechanism for the allocation of social aid.

  9. El mático de la Región de Cuyo (Argentina)

    OpenAIRE

    Ariza Espinar, Luis; Bonzani, Norma

    1992-01-01

    Se estudiaron los caracteres morfoanatómicos de valor diagnóstico de dos especies conocidas en la Argentina con el nombre vulgar de "mático" o "matico": una piperácea andina (Piper elongatum Vahl) y una asterácea (Artemisia douglasiana Bess.) asilvestrada y cultivada en la región de Cuyo (Provincia de San Juan, La Rioja, San Luis y Mendoza). Esta última ha despertado el interés de los fitoquímicos y es utilizada como antiulcerosa en medicina popular.

  10. Tendencias en el uso de la tierra y diversidad productiva en establecimientos agropecuarios del centro-sur de la provincia de Buenos Aires (Argentina Tendencies in land use and productive diversity in central-south farms of the Province of Buenos Aires (Argentina

    Directory of Open Access Journals (Sweden)

    E. Requesens

    2011-06-01

    Full Text Available El partido de Benito Juárez, ubicado en el centro-sur de la provincia de Buenos Aires (Argentina, es ambientalmente heterogéneo y productivamente mixto, con tradición predominantemente ganadera. A fin de evaluar las tendencias en el uso de la tierra, se describió la evolución de los diferentes rubros productivos y su diversidad durante el periodo 1998-2007, sobre la base de una selección de 30 establecimientos. El pastizal natural ocupó la mayor proporción de superficie promedio en el período considerado, pero reflejó una pérdida de 23 puntos porcentuales compensada sólo parcialmente por un aumento de pasturas perennes. La suma de ambos recursos forrajeros evidenció una caída en la superficie destinada a ganadería y, al final del periodo, fue ligeramente superada por la superficie destinada a cultivos anuales. Entre éstos, la soja fue el cultivo con mayor expansión pero su participación relativa alcanzó sólo el 11,02%. Paralelamente, la diversidad productiva, estimada mediante una adaptación del índice de diversidad de Shannon, aumentó 30,84%. Aunque es evidente el avance de cultivos anuales en desmedro de pastizales naturales, el reemplazo parcial de estos últimos por pasturas perennes y el aumento en la diversidad productiva limitan los riesgos ambientales potenciales, puestos de manifiesto en otras regiones del país.Benito Juarez county, in the central-south Buenos Aires province (Argentina, is environmentally and productively heterogeneous, with predominance of cattle farming. In order to evaluate the tendencies in land use, the evolution of different productive items and their diversity throughout the period 1998- 2007 were described on the basis of 30 farms selected. The grasslands occupied the greater proportion of the area throughout the period studied, but they reflected a loss of 23 percentage points which was only partially compensated by an increase of perennial pastures. This fact caused a decrease in the

  11. Primer registro de megafloras y palinología en estratos de la Formación Tarija (Pennsylvaniano, Arroyo Aguas Blancas, Provincia de Salta, Argentina: Descripción de dos especies nuevas First record of megafloras and palynology in the Tarija Formation (Pennsylvanian, Aguas Blancas creek, Salta Province, Argentina: Description of two new species

    Directory of Open Access Journals (Sweden)

    Mercedes di Pasquo

    2009-01-01

    Full Text Available Se analiza e ilustra, por primera vez, una tafoflora hallada en estratos de la Formación Tarija que aflora en Arroyo Aguas Blancas, Provincia de Salta, Argentina. Se describen, también, dos especies nuevas: Malanzania starckii (licofita y Grumosisporites delpapae (espora trilete. Se reconocieron improntas de semillas platispérmicas (Sama-ropsis nunezii García emend. A. Archangelsky, Cordaicarpus cesariae Gutiérrez, Ganuza, Morel y Arrondo emend. A. Archangelsky, improntas de tallos articulados {Paracalamites australis Rigby emend. Zampirolli y Bernardes de Oliveira y compresiones/improntas de fragmentos foliares (Cordaites riojanus Archangelsky y Leguizamón, Ginkgo-phyllum sp. cf. G. diazii Archangelsky y Arrondo. Esta asociación es atribuida al Pennsylvaniano s.l. sobre la base de la distribución estratigráfica de las especies seminales. La asociación palinológica se compone de 101 especies, 53 de ellas reconocidas como autóctonas y 48 retrabajadas. El primer conjunto comprende 34 especies de esporas trilete, 11 granos de polen monosacado, un grano bisacado y siete especies de algas. El grupo retrabajado se compone de 27 esporas trilete y criptosporas, 20 especies de acritarcas, prasinofitas y otras algas y un quitinozoario. La presencia de especies exclusivas de la BiozonaD. bireticulatus-C. chacoparanensis (BC (e.g., Dictyotriletes bireticulatus (Ibrahim Potonié y Kremp emend. Smith y Butterworth, Crucisaccites latisulcatus Lele y Maithy, Verrucosisporites morulatus (Knox Potonié y Kremp emend. Smith y Butterworth, permite acotar su edad al Bashkiriano tardío-Moscoviano. La vegetación, compuesta principalmente por licofitas, esfenofitas, pteridofitas y gimnospermas, se habría desarrollado en diferentes ambientes continentales como lagos y ríos alimentados por glaciares de montaña.Fossil plant remains found in the Tarija Formation cropping out at the Aguas Blancas creek, Aguaragüe range, Salta Province, Argentina, are analy

  12. Detección de anticuerpos anti-Brucella spp. en cerdos mediante técnicas de aglutinación y ELISA indirecto en las provincias de Buenos Aires y La Pampa: Argentina Detection of anti-Brucella spp. antibodies in swine by agglutination techniques and indirect ELISA in the Buenos Aires and La Pampa provinces: Argentina

    Directory of Open Access Journals (Sweden)

    H.A. Castro

    2006-04-01

    Full Text Available En nuestro país no existe un programa de control sobre brucelosis porcina y su verdadera situación epidemiológica es desconocida. El objetivo de nuestro trabajo fue detectar la presencia de anticuerpos anti-Brucella spp. en porcinos provenientes de criaderos del sudoeste de la provincia de Buenos Aires y del este de la provincia de La Pampa. La toma de muestras de sangre se realizó en el momento del faenado de los animales. La detección de anticuerpos se efectuó mediante las técnicas de aglutinación con antígeno tamponado en placa (BPA, seroaglutinación en tubo (SAT, aglutinación con 2-ME (2-ME y ELISA indirecto, con dos antígenos diferentes: el antígeno CYT (fracción citoplasmática de B. abortus S19 y el antígeno CP (extracto citoplasmático libre de lipopolisacárido. Del total de las muestras analizadas (n=325, el 17,8% fue positivo para BPA, el 13,8% fue positivo para SAT y sólo el 8,0% fue positivo para 2-ME. Mediante ELISA-CYT, este porcentaje se elevó a 21,0%, mientras que a través del ELISA-CP sólo se halló un 10,0% de muestras reactivas. Estos resultados son compatibles con los informados en los escasos reportes previos para todo el país y sugieren la necesidad de extender los estudios a otras zonas, donde sea habitual la cría de cerdos.Porcine brucellosis is one of the most important zoonoses in this country. Currently, there is no control program for porcine brucellosis in Argentina and the epidemiological situation is still unknown. The purpose of our study was to detect anti-Brucella spp. antibodies in swine in the southwest of the Buenos Aires province and the east of the La Pampa province. Blood samples were obtained when animals were slaughtered. The presence of anti-brucella antibodies was studied by the buffered plate agglutination test (BPA, the tube agglutination test (SAT, the 2-mercaptoethanol (2-ME agglutination test and indirect ELISA tests, using the cytosolic fraction from Brucella abortus S19

  13. Geología de la región del Cerro Guanaquero, Río Diamante, Mendoza Geology of Cerro Guanaquero region, Diamante River, Mendoza

    OpenAIRE

    Federico Fuentes; Victor A. Ramos

    2008-01-01

    El estudio realizado presenta nuevos datos sobre un sector poco conocido de la Cordillera Principal de Mendoza, en la alta cuenca del río Diamante en las adyacencias del cerro Guanaquero, y los primeros datos geocronológicos de sus rocas volcánicas. Las unidades geológicas presentes en el área se dividen en cuatro grupos principales: secuencias sedimentarias mesozoicas marinas y continentales intensamente plegadas y falladas; intrusivos y volcanitas intermedias de edad neógena; rocas volcánic...

  14. 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

  15. Petrología y Estructura del Complejo Ígneo-Metamórfico Aluminé, Provincia de Neuquén, Argentina Petrology and Structure of the Aluminé Igneous-Metamorphic Complex, Neuquén province, Argentina

    Directory of Open Access Journals (Sweden)

    Ivana A Urraza

    2011-01-01

    andinas (cretácicas o más modernas y el sector sur donde dominan los granitoides preandinos de edades permotriásicas-jurásicas, emplazados en un basamento paleozoico. Si bien los diagramas geoquímicos permiten diferenciar los diferentes petrotipos definidos petrográficamente y sus tendencias evolutivas podrían indicar procesos de cristalización fraccionada, la distribución areal de los mismos, sus características petrográfico-microestructurales y la geocronología, indican que podrían corresponder a diferentes pulsos-eventos magmáticos separados en el tiempo, aunque desarrollados en un contexto de características tectónicas similares.In the present contribution, the partial results of a detailed study of the magmatic, metamorphic and tectonic events developed in the Aluminé Igneous-Metamorphic Complex (AIMC are given. We define the AIMC as the set of pre-andean and andean intrusive igneous and metamorphic rocks, outcropping in the área located between the Aluminé, Moquehue, Ñorquinco and Pulmarí lakes in the Neuquén province, Argentina. Based on field and petrographic observations and geochemical characteristics, the granitic rocks forming part of the AIMC have been classified as: 1. quartz diorites, 2. tonalites-granodiorites, 3. granodiorites and 4. granites. The geochemical parameters indícate that the defined lithologies derive from calcic to weakly calcalkaline magmas of metaluminous composition, typical of Type I Cordilleran batholiths associated with active continental margins. Intercalated between the magmatic rocks, some outcrops of metamorphic basement composed mainly of schists, gneisses, amphibolites and scarce quartzose sandstones. Andesites, tuffs and basalts cover in part the metamorphites and granitoids are exposed. The structure of the sector is characterized by the presence of three main sets of regional lineaments, with NE-SW, NW-SE and N-S orientations. These directions coincide with the orientations of the three groups of

  16. ANÁLISIS DE LA COBERTURA NIVAL DE LA CUENCA SUPERIOR DEL RÍO MENDOZA A PARTIR DE IMÁGENES MODIS

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    Leandro Cara

    2016-06-01

    Full Text Available El deshielo de la nieve acumulada durante el invierno en la cuenca alta del río Mendoza constituye el principal suministro de agua para la agricultura, la industria y el consumo humano en los sectores bajos adyacentes. Sin embargo, a pesar de su gran importancia, hay muy pocos estudios que permitan conocer y entender la variabilidad espacial y temporal de la nieve en este sector de los Andes Centrales de Argentina. En este trabajo presentamos una técnica para cuantificar la evolución diaria de la cobertura nival en esta cuenca basada en la integración de imágenes de los sensores MODIS Aqua y Terra para el período 2000 y 2014. La técnica muestra disminución en la pérdida de información por presencia de nubosidad y fue realizada utilizando herramientas y funciones de los lenguajes de programación Libres R y BASH. Las series de cobertura de nieve obtenidas muestran importantes variaciones estacionales con aumentos de la cobertura nival en invierno (58% de cobertura máxima en promedio y reducciones significativas en verano. Asimismo, se observa una importante variabilidad interanual con claras diferencias entre años secos (ej. 2010, con 12% de cobertura promedio y nevadores (ej. 2005, 32% de cobertura anual promedio. Los mapas de cobertura nival muestran además que los sectores con mayor persistencia de nieve coinciden con la ubicación de glaciares, en los sectores más elevados, protegidos y de menor insolación de la cuenca. Los resultados brindan información novedosa y relevante para conocer y entender de forma más completa la distribución y variabilidad de la cobertura nival en este sector de la cordillera. Los mismos pueden servir de base para múltiples aplicaciones incluyendo el modelado hidrológico de la cuenca del río Mendoza contribuyendo al manejo racional de sus recursos hídricos.

  17. Environmental laws for mining activities in Provincia de San Juan (Argentina), gravel mines exploitation

    International Nuclear Information System (INIS)

    Ramirez, M.; Carrascosa, H.

    2007-01-01

    This paper analyses San Juan Province - Argentina prevailing environmental legislation for mining activity and gravel mines. The study focuses the subject from a mining engineering point of view. (author)

  18. 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

  19. 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 ...

  20. A new species of Aphis Linnaeus, 1758 (Hem. Aphididae collected on Gymnophyton Clos (Apiaceae in Argentina

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    Sara I. López Ciruelos

    2017-02-01

    Full Text Available Aphis cuyana López Ciruelos & Ortego, sp. n. (Aphididae, Aphidinae is described from apterous and alate viviparous females collected on Gymnophyton polycephalum (Apiaceae in localities of the Argentinean provinces of La Rioja, San Juan and Mendoza. A table with differences of the apterous viviparous females of the new species from the species of Aphis and its close genera Andinaphis and Protaphis known in South America is presented. http://urn:lsid:zoobank.org:pub:4834FEF4-171C-4EBD-BF91-2137B517491E

  1. On the use of the lichen Ramalina celastri (Spreng.) Krog. and Swinsc. as an indicator of atmospheric pollution in the province of Cordoba, Argentina, considering both lichen physiological parameters and element concentrations

    International Nuclear Information System (INIS)

    Jasan, R.C.; Pla, R.R.; Verburg, T.G.; Wolterbeek, H.Th.; Pignata, M.L.

    2004-01-01

    The lichen Ramalina celastri (Spreng.) Krog. and Swinsc. was used to study trace-element atmospheric pollution in Cordoba (Argentina). 38 samples from a 1999 campaign were analyzed by NAA and a number of physiological parameters was determined. In first-ever comparisons, no correlations were found between altitude, physiological parameters and determined elements, which allowed the full comparison of element data in lichen samples throughout the whole survey area. After the application of Monte Carlo assisted factor analysis to the elemental matrix, five source profiles were found and mapped. The attribution of the sources is discussed. (author)

  2. Evaluación del comportamiento agroindustrial de variedades de duraznos conserveros (Prunus persica (L. Batsch en Mendoza, Argentina

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    Miguel Alejandro Ojer

    2010-06-01

    Full Text Available Con el objeto de aumentar los rendimientos a campo, mejorar la calidad de la materia prima y sentar las bases de futuros programas de introducción de nuevas variedades, se evaluaron 13 variedades de duraznos conserveros. A fin de dar marco a la propuesta, se analizó la situación del sector industrial, el sector de producción primaria y el panorama varietal. Se efectuaron mediciones en 5 áreas: maduración, comportamiento en la cosecha, capacidad productiva, parámetros vinculados al procesamiento en mitades y comportamiento en la agroindustria. Las determinaciones se realizaron durante 6 temporadas en 2 montes frutales en plena producción comercial. La oferta varietal se caracterizó por una sobreoferta (56,0 % del total implantado entre la última semana de enero y primera de febrero, y una escasa oferta, tan sólo del 12,2 %, a partir de mediados de febrero. Se observó un progresivo y sostenido reemplazo de las máquinas descarozadoras de torsión por las de sección. El máximo valor de la producción depende de los rendimientos, el peso de los frutos y su distribución en categorías comerciales. Sólo las variedades, Fortuna, Loadel y Carson, no superaron el nivel de producción mínimo (40 t/ha, pretendido por el sector primario. Sullivan’s Late mostró un comportamiento errático, con años de alto rendimiento y otros con baja producción. El rendimiento industrial es función principalmente del peso de frutos y la firmeza de pulpa. En el ingreso a la línea de procesamiento, la firmeza de pulpa debe estar en el rango 6 a 12 lb, aunque el óptimo es de 7 a 10 lb. Una visión integral del problema indica que la definición de la carga frutal óptima para cada variedad y el manejo de la cosecha son los dos factores determinantes del rendimiento en campo, la calidad de la materia prima y del rendimiento industrial.

  3. Evaluación del comportamiento agroindustrial de variedades de duraznos conserveros (Prunus persica (L. Batsch en Mendoza, Argentina

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    Miguel Alejandro Ojer

    2010-07-01

    Full Text Available Con el objeto de aumentar los rendimientos a campo, mejorar la calidad de la materia prima y sentar las bases de futuros programas de introducción de nuevas variedades, se evaluaron 13 variedades de duraznos conserveros. A fin de dar marco a la propuesta, se analizó la situación del sector industrial, el sector de producción primaria y el panorama varietal. Se efectuaron mediciones en 5 áreas: maduración, comportamiento en la cosecha, capacidad productiva, parámetros vinculados al procesamiento en mitades y comportamiento en la agroindustria. Las determinaciones se realizaron durante 6 temporadas en 2 montes frutales en plena producción comercial. La oferta varietal se caracterizó por una sobreoferta (56,0 % del total implantado entre la última semana de enero y primera de febrero, y una escasa oferta, tan sólo del 12,2 %, a partir de mediados de febrero. Se observó un progresivo y sostenido reemplazo de las máquinas descarozadotas de torsión por las de sección. El máximo valor de la producción depende de los rendimientos, el peso de los frutos y su distribución en categorías comerciales. Sólo las variedades, Fortuna, Loadel y Carson, no superaron el nivel de producción mínimo (40 t/ha, pretendido por el sector primario. Sullivan’s Late mostró un comportamiento errático, con años de alto rendimiento y otros con baja producción. El rendimiento industrial es función principalmente del peso de frutos y la firmeza de pulpa. En el ingreso a la línea de procesamiento, la firmeza de pulpa debe estar en el rango 6 a 12 lb, aunque el óptimo es de 7 a 10 lb. Una visión integral del problema indica que la definición de la carga frutal óptima para cada variedad y el manejo de la cosecha son los dos factores de determinantes del rendimiento en campo, la calidad de la materia prima y del rendimiento industrial.

  4. La probabilidad de participar en el mercado de trabajo y la exclusión social en Mendoza,Argentina

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    Mónica Iris Calderón

    2000-01-01

    Full Text Available Nuestro objetivo consiste en identificar los diferentes grupos expuestos al riesgo de estar socialmente excluidos. En este sentido, se estima la probabilidad de formar parte del mercado de trabajo. Para ello, se introducen algunos conceptos relacionados al de pobreza, así como diferentes formas para medirla: necesidades básicas insatisfechas, líneas de pobreza e índice de desarrollo humano. El aspecto social es complementado con indicadores de vulnerabilidad. En este trabajo se utiliza a la población potencialmente activa comprendida entre los 14 y los 65 años "empleada, desempleada o que no trabaja" que eventualmente puede acceder al mercado de trabajo. El modelo de participación empleado muestra algunas características personales y de capital humano. Los resultados del modelo Probit estimado, el cual toma como fuente de datos a la Encuesta Permanente de Hogares (EPH, señala un buen ajuste en general encontrándose evidencia suficiente de la existencia de mercados segmentados.

  5. Magneto stratigraphy and 40Ar - 39Ar dating of the neogene synorogenic strata of Northern Mendoza, Argentina: Tectonic implications

    International Nuclear Information System (INIS)

    Irigoyen, Maria V.; Ramos, Victor A.; Brown, Richard L.

    1998-01-01

    Full text: At the southernmost extension of the Pre cordillera fold-and-thrust belt, 33 S latitude, about 4000 m of Cenozoic foreland-basin strata record the eastern migration of the Andean thrust from since the Neogene. These deposits accumulated in response to exhumation and deformation of the western Principal and Frontal cordilleras. The detrial clastic strata cropping out in the La Pilona-Tupungato region, comprise five formation units that record fluvial, eolian and alluvial deposition in an arid setting. To link the sequence of deformational events in the western mountain belts with the sedimentary record, all units except the youngest have been dated using magnetic polarity stratigraphy calibrated with 40 Ar - 39 Ar dates on inter bedded tephras. A precise chronology of these deposits in conjunction with a multiple data set that include rates of sedimentation in the foreland, a provenance study on these rocks, and facies and textural patterns, provide the basis for documenting details of tectonic activity, volcanism and deposition. The oldest Marinio Fm., whose deposition spans ∼15.7-12.2 Ma, is interpreted to record two phases of thrusting in the Principal Cordillera (Irigoyen 1997). The earlier phase is tied to deformation of the Mesozoic andesitic volcanic complex cropping out in the western part of the Aconcagua fold-and-thrust belt. The second phase of thrusting is linked with deformation of the Mesozoic marine sequences of the central part of the Aconcagua fold-and-thrust belt. The overlying La Pilona Fm., whose deposition spans ∼11.7-9.0 Ma, is thought to record the initiation of exhumation of the Frontal Cordillera. Provenance and paleocurrent data are consistent with clast derivation from northwestern highland sources (i.e., cordon and cuchillas del Tigre) which provided volcanic detritus from the Choiyoi Group and low-grade metamorphic and sedimentary rocks of lower Paleozoic age. Exhumation and displacement of the Frontal Cordillera overlapped in time with deformation in the Principal Cordillera in which the latest phase of deformation is known to occur at ∼8.0 Ma (e.g., Ramos 1996). The extensive ash-rich unit, the 8.9-8.7 Ma Tobas Angostura Fm., is correlated with the latest extrusive episode that included pyroclastic eruptions in the Principal Cordillera. An unconformity separates the Rio de los Pozos Fm., probably at least as young as ∼7.2 Ma, from the youngest Mogotes Fm. This unit, whose deposition spans ∼3.1 Ma, includes the large boulder conglomerates that today lie at the foot of the cordon del Plata immediately to the west of the study site. Therefore, deposition of this unit is linked with deformation in the flanking Frontal Cordillera. Neogene strata are deformed into fault-propagation folds and emergent east-verging thrusts which, in some cases, also display a sinistral strike-slip component. The timing of deformation of the Tertiary sequence is constrained by an ash-tuff layer un conformably overlying these deposits and dated at 0.39 ± 0.03 Ma. (author)

  6. Caracterización de las comunidades de acridios (Orthoptera: Acridoidea del partido de Benito Juárez, sudeste de la provincia de Buenos Aires, Argentina Grasshopper (Orthoptera: Acridoidea community structure in Benito Juárez county, in outhern Buenos Aires province, Argentina

    Directory of Open Access Journals (Sweden)

    María Laura de Wysiecki

    2004-12-01

    que motivaron este cambio en la dominancia ya que no se cuenta con datos históricos, no pueden descartarse entre otros factores, eventuales cambios climáticos, campañas acridianas y contra otras plagas y el cambio en los patrones del uso de la tierra ocurridos en las últimas décadas en el área de estudio.The structure of grasshopper communities was studied at different sites in Benito Juárez county, Buenos Aires province, Argentina, over a six-year period (1997-2002. The sites were classified into five categories of disturbance: native grasslands, halophilous communities, pastures, moderately and highly disturbed pastures. A total of 23 grasshopper species was collected. Melanoplinae was the most abundant subfamily in all sites, except for halophilous communities that were characterized by the presence of one Acridinae species, Covasacris pallidinota (Bruner. Average species richness per site and per year, ranged from 2.10 ± 0.60 species in moderately disturbed pastures to 6.20 ± 0.58 species in halophilous communities. Cumulative species richness was: 17 in native grasslands, 14 in halophilous communities, 19 in undisturbed pastures, 18 in moderately disturbed pastures and 14 in highly disturbed pastures. Mean density was significantly higher in 2001 and 2002 than in the remaining years. The most abundant species were Dichroplus pratensis Bruner and Dichroplus elongatus Giglio-Tos in native grasslands and highly disturbed pastures; C. pallidinota in halophilous communities and D. elongatus - Scotussa lemniscata (Stål in undisturbed and moderately disturbed pastures. Along the study, the taxonomic structure of the grasshopper assemblages was significantly constant in native grasslands, halophilous communities and undisturbed pastures. The pattern of species distribution showed few species widely or intermediately distributed, whereas numerous species were rare. Among the 23 species collected, D. elongatus was the most broadly distributed of all. Historically

  7. La dinámica de la sustentabilidad fiscal en los municipios urbanos de la Provincia de Mendoza

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    Raúl Molina

    2016-11-01

    Full Text Available La finalidad del trabajo es revisar el comportamiento fiscal comparado de los departamentos urbanos que forman parte del “Gran Mendoza” (Capital, Guaymallén, Godoy Cruz y Las Heras, así como analizar distintos indicadores de sustentabilidad fiscal y su aplicación a la situación actual y futura de los mismos. A partir del análisis de la deuda pública consolidada y su relación con los resultados financieros de los respectivos municipios, se analizan las perspectivas de solvencia de cada uno de ellos, para determinar, en su caso, los esfuerzos fiscales necesarios para retomar la senda de la sustentabilidad. Sin duda, la efectividad de la política presupuestaria y tributaria, y el nivel del gasto público, repercuten claramente en los resultados de la gestión, pero hay también otros aspectos, como la selección de formas alternativas para financiar el gasto público y el manejo del endeudamiento, que impactan en los resultados financieros de los municipios. Clasificación JEL: H7.Palabras clave: Finanzas Públicas Intergubernamentales; Estados sub-nacionales; Solvencia fiscal; Sustentabilidad; Déficits. The dynamics of fiscal sustainability in the urban municipalities of the Province of MendozaAbstractThe purpose of this paper is to review the fiscal performance compared to urban municipalities of “Gran Mendoza” (Capital, Guaymallén, Godoy Cruz and Las Heras and to analyze different indicators of fiscal sustainability and its application to the current and future situation of them. From the analysis of the consolidated public debt and its relationship to the financial performance of the respective municipalities, the prospects solvency of each of them are analyzed to determine the necessary fiscal efforts to resume the path of sustainability. Certainly the effectiveness of budgetaryl and tax policy, and the level of public spending clearly affect the results of management, but there are also other aspects such as the selection

  8. Plagas de la agricultura en Mendoza: la langosta en los comienzos de la vitivinicultura moderna (1890-1900

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    Eduardo Pérez Romagnoli

    2011-12-01

    Full Text Available El trabajo se refiere a la presencia de la langosta en Mendoza en los comienzos de la especialización vitivinícola, en la década de 1890. Comprende aspectos sobre su biogeografía, antecedentes del insecto en nuestro país, los primeros inventos nacionales para enfrentar sus ataques. Con relación a las invasiones de la Schistocerca americana en Mendoza, se indaga sobre la organización estatal y la participación de la sociedad para combatirla, incluyendo algunos problemas y daños causados en la agricultura.The study refers to the presence of locust in Mendoza at the beginning of wine specialization, in the decade of 1890. It includes aspects on biogeography, precedents of the insect in our country, and first national inventions to face its assaults. In relation to invasions of Schistocercaamericana in Mendoza, the study researches on state organization and social participation to attack the plague, including some problems and damages caused in agriculture.

  9. Tillandsia myosura Griseb. ex Baker (Bromeliaceae, una nueva cita para la flora de la Provincia de Buenos Aires, (Argentina

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    Juan Manuel Cellini

    2012-07-01

    Full Text Available Se cita por primera vez para la Provincia de Buenos Aires Tillandsia myosura, coleccionada en las inmediaciones del arroyo Pereyra, Parque Provincial y Reserva de la Biosfera Parque Pereyra Iraola (Partido de Berazategui, Buenos Aires, Argentina. Esta especie, conocida hasta el presente sólo para el sur de Uruguay y las provincias de Catamarca, Córdoba, Jujuy, La Rioja, La Pampa, Mendoza, Salta, San Juan, San Luis, Santiago del Estero y Tucumán en Argentina es citada por primera vez para la Provincia de Buenos Aires, ampliándose su límite sur de distribución. En el presente trabajo se describe e ilustra la especie, y se presenta una clave para diferenciarla de especies afines de distribución congruente.

  10. Extensión del límite austral de distribución de tres especies de peces óseos tropicales en la costa de la Provincia de Buenos Aires, Argentina Southern extension of three species of tropical bony fishes along the coast of Buenos Aires Province, Argentina

    OpenAIRE

    Andrés C Milessi; Jorge H Colonello; Federico Cortés; Carlos A Lasta; Juan A Waessle; Lucrecia Allega

    2012-01-01

    Se presentan tres nuevos registros de especies de peces óseos cuya distribución corresponde a aguas tropicales, capturados por buques pesqueros en la costa de la Provincia de Buenos Aires, Argentina (CPBA, 36°-38°S). Los ejemplares corresponden a las especies: Rachycentrum canadum, Elops saurus y Caulolatilus chrysops. Estos registros amplían significativamente el límite austral de su distribución. La presencia ocasional de estas especies está asociada al transporte de agua subtropical cálida...

  11. The bloodsucking biting midges of Argentina (Diptera: Ceratopogonidae

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    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.

  12. New host records for four species of tortricid moths (Lepidoptera: Tortricidae) on cultivated blueberries, Vaccinium corymbosum (Ericaceae), in Argentina

    Science.gov (United States)

    Four species of tortricids were reared from cultivated blueberries, Vaccinium corymbosum L. (Ericaceae), from four field sites in the province of Buenos Aires, Argentina: Clarkeulia bourquini (Clarke, 1949), Clarkeulia deceptiva (Clarke, 1949), Argyrotaenia spheralopa (Meyrick, 1909), and Platynota ...

  13. The eco-epidemiology of Triatoma infestans in the temperate Monte Desert ecoregion of mid-western Argentina

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    Ana Laura Carbajal-de-la-Fuente

    Full Text Available BACKGROUND The eco-epidemiological status of Chagas disease in the Monte Desert ecoregion of western Argentina is largely unknown. We investigated the environmental and socio-demographic determinants of house infestation with Triatoma infestans, bug abundance, vector infection with Trypanosoma cruzi and host-feeding sources in a well-defined rural area of Lavalle Department in the Mendoza province. METHODS Technical personnel inspected 198 houses for evidence of infestation with T. infestans, and the 76 houses included in the current study were re-inspected. In parallel with the vector survey, an environmental and socio-demographic survey was also conducted. Univariate risk factor analysis for domiciliary infestation was carried out using Firth penalised logistic regression. We fitted generalised linear models for house infestation and bug abundance. Blood meals were tested with a direct ELISA assay, and T. cruzi infection was determined using a hot-start polymerase chain reaction (PCR targeting the kinetoplast minicircle (kDNA-PCR. FINDINGS The households studied included an aged population living in precarious houses whose main economic activities included goat husbandry. T. infestans was found in 21.2% of 198 houses and in 55.3% of the 76 re-inspected houses. Peridomestic habitats exhibited higher infestation rates and bug abundances than did domiciles, and goat corrals showed high levels of infestation. The main host-feeding sources were goats. Vector infection was present in 10.2% of domiciles and 3.2% of peridomiciles. Generalised linear models showed that peridomestic infestation was positively and significantly associated with the presence of mud walls and the abundance of chickens and goats, and bug abundance increased with the number of all hosts except rabbits. MAIN CONCLUSIONS We highlight the relative importance of specific peridomestic structures (i.e., goat corrals and chicken coops associated with construction materials and host

  14. ACERCA DEL USO DE PULIDORES O LITOS NO MODIFICADOS EN LA PRODUCCIÓN CERÁMICA DEL SITIO VILLAVIL (PROVINCIA DE CATAMARCA, ARGENTINA (On the Use of Unmodified Lithic Polishers in the Ceramic Production of the Villavil Site (Province of Catamarca, Argentina

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    Julieta Lynch

    2015-09-01

    Full Text Available El siguiente trabajo tiene como objetivo profundizar el conocimiento sobre las actividades que se desarrollaron en el sitio Villavil, localizado al norte del valle de Hualfín, provincia de Catamarca, Argentina. Se analizaron las características tecnomorfológicas y funcionales de los conjuntos cerámicos, como así también del material lítico asociado a la producción cerámica de uno de los recintos que conforman el sitio (Recinto Rectangular 1. Los resultados obtenidos han permitido profundizar acerca de las distintas etapas de producción cerámica y de los elementos líticos que habrían participado en su proceso de manufactura. ENGLISH: The main objective of this paper is to improve the knowledge of the ancient activities in the site of Villavil, located in the northern Hualfin Valley, Catamarca, Argentina. The techno-morphology, functional ceramic characteristics, and lithic material associated to ceramic production from one structure forming the archaeological site (Rectangular Structure 1 has been analyzed. These results have helped to better understand the different stages of ceramic production and the lithic elements that would have been part of the manufacturing process.

  15. Oribátidos arborícolas del «Paseo del Bosque» (La Plata, provincia de Buenos Aires, Argentina Canopy soil suspendend oribatids from the «Paseo del Bosque» (La Plata, province of Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Ana Salazar Martínez

    2007-07-01

    Full Text Available En esta nota se aporta información sobre los oribátidos arborícolas del Paseo del Bosque, La Plata, Argentina (34º 54' S, 57º 55' W, a partir de muestreos realizados en suelos suspendidos con distinta concentración de detritos. La fauna de oribátidos estuvo representada por 17 especies, siendo Cultroribula sp., Pheroliodes cf. minutus Baranek, Rhysotritia peruensis Hammer y Oppiella nova Oudemans las de mayor importancia relativa. De las especies registradas, 76 % son propias del ambiente arborícola.This work deals with the arboreal oribatids of «Paseo del Bosque», La Plata, Argentina (34º 54' S, 57º 55' W. Samples were taken from suspended soils exhibiting unequal detritus concentrations. The overall sample included 17 oribatid species, exhibiting Cultroribula sp., Pheroliodes cf. minutus Baranek, Rhysotritia peruensis Hammer and Oppiella nova Oudemans the highest relative importance. Seventy percent of the recorded species are representative of the arboricole environment.

  16. Public health against a centralized state: institutions and welfare services in the province of Mendoza during the first Peronism

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    Ivana Hirschegger

    2016-10-01

    Full Text Available This research analyzes the state action in public health during the first Peronism and engages on some factors that determined the success or failure of policies at provincial level. The work also refers , through concrete examples , to smaller territorial units such as municipalities , while application areas of public policy or executors of them. Some of the questions that were attempted to answer what extent the new changes in the state structure were accompanied by concrete actions that have a bearing on the living conditions of the population? What obstacles limited government action? the realization of public works will be included in this analysis by the state , staff in charge , as well as investments in other resources necessary for adequate medical care.

  17. The Medical Vocabulario terminológico of Manuel Hurtado de Mendoza

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    Bertha M. Gutiérrez Rodilla

    2012-12-01

    Full Text Available From the early nineteenth century, Spanish physicians started to sense a «threat» to the language of medicine which they used, due in part to the large number of foreign terms they were forced to import from other languages, particularly French. Many voices emerged to denounce this situation and propose potential solutions such as those which would be derived from the creation of a terminological dictionary which would fix precise meanings for medical terms. It was Manuel Hurtado de Mendoza who eventually dared to take on this task and develop the first modern terminological dictionary of medicine in Spanish. The intention of this paper is to present from a philological viewpoint the process by which a lexicographical work that deserves to be better known and used in studies on historical lexicography came to be constructed.

  18. Novedades en la Distribución de las Cyatheaceae (Pteridophyta en Argentina Novelties in the distribution of Cyatheaceae (Pteridophyta of Argentina

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    Gonzalo J. Marquez

    2006-12-01

    Full Text Available Cyathea atrovirens (Langsd. & Fisch. Domin se cita por primera vez para la provincia de Corrientes (Argentina. De esta manera se extiende su área de distribución hacia el sudoeste. Además se confirma la presencia de Alsophila odonelliana (Alston M. Lehnert en la provincia de Jujuy (Argentina. En este estudio los caracteres de las esporas resultaron diagnósticos para la determinación genérica de los taxa.Cyathea atrovirens (Langsd. & Fisch. Domin is reported for the first time for Corrientes province (Argentina. Thus, its area of distribution is extended southwest. The presence of Alsophila odonelliana (Alston M. Lehnert is confirmed for Jujuy province (Argentina. In this study the spore features were diagnostic in order to determine these taxa.

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

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    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.

  20. 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.

  1. Measuring Variance in Subnational Regimes: Results from an Expert-Based Operationalization of Democracy in the Argentine Provinces Midiendo la variación de los regímenes subnacionales: Resultados de una operacionalización basada en expertos de la democracia en las provincias argentinas

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    Carlos Gervasoni

    2010-01-01

    Full Text Available This paper presents an expert-based operationalization strategy to measure the degree of democracy in the Argentine provinces. Starting with a mainstream and “thick” definition of regime type, I assess each of its aspects using a subjective or perception-based approach that taps the knowledge of experts on the politics of each province. I present and justify the methodological design of the resulting Survey of Experts on Provincial Politics (SEPP and conduct a preliminary analysis of its results. Some aspects of the provincial regimes appear to be clearly democratic, while others are mixed or even leaning towards authoritarianism. Moreover, some show little interprovincial variance, while others vary considerably from province to province. An analysis of the central tendency and dispersion of the survey items allows for a general description of the Argentine provincial regimes. Inclusion is the most democratic dimension, while the effectiveness of institutional constraints on the power of the Executive is the most deficient. Electoral contestation is generally free of traditional forms of fraud, but incumbents often command far more campaign resources and media attention than do their challengers. Physical repression is rare, but opponents in some provinces face subtler forms of punishment. While the survey does not uncover any clear cases of subnational authoritarianism, stricto sensu, provincial regimes do vary significantly from basically democratic to clearly hybrid. Este artículo presenta una estrategia de operacionalización basada en expertos para medir el grado de democracia en las provincias argentinas. Partiendo de una definición convencional y “densa” del tipo de régimen, se evalúan cada uno de sus aspectos usando un enfoque subjetivo o basado en percepciones, que explota el conocimiento de expertos en la política de cada provincia. Se presenta y justifica el diseño metodológico de la resultante Encuesta de Expertos en

  2. Estratigrafía y análisis tafonómico de Bonitasaura salgadoi Apesteguía, en el sitio «La Bonita» (Cretácico superior, Río Negro, Argentina Stratigraphic and taphonomic analysis of Bonitasaura salgadoi Apesteguía (Sauropoda, Titanosauria at «La Bonita» site (Upper Cretaceous, Río Negro Province, Argentina

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    Leandro M. Pérez

    2009-06-01

    Full Text Available La localidad fosilífera «La Bonita» se ubica en las cercanías del pueblo de Cerro Policía, provincia de Río negro, Argentina. Allí afloran sedimentos continentales silicoclásticos pertenecientes a las Formaciones Bajo de la Carpa y Anacleto (Santoniano-Campaniano separadas en discordancia de la Formación Rentería (Plioceno Superior-Pleistoceno. La Formación Bajo de la Carpa se compone de areniscas, finos bancos conglomerádicos alternados con pelitas y capas de vaques. La Formación Anacleto está compuesta de capas arenopelíticas. La Formación Rentería está mayormente compuesta por conglomerados con clastos que alcanzan 15 cm de longitud, incluídos en una matriz sabulítica. El análisis de facies sugiere un regimen fluvial, con un control subacuático que oscila entre energía media y alta. Los canales arenosos, lenticulares, poseen estratificación entrecruzada indicando un agente de transporte unidireccional. El análisis tafonómico indicaría que el dinosaurio murió en las cercanías de los márgenes del río, siendo rápidamente incorporado a los sedimentos fluviales y sepultado en sucesivos eventos. La distribución especial de los huesos revela un corto transporte desde la fuente de aporte, con una leve orientación hacia el norte. La presencia de dos series de vertebras caudales con arqueamiento opistótono indican que el animal fue expuesto un período suficiente de tiempo para que actúe el rigor mortis y la disecasión. El grado de desarticulación sugiere, también, cierta exposición subaérea, aunque no en gran medida, debido a la exquisita preservación del hueso periostial.«La Bonita» is a fossiliferous locality close to the town of Cerro Policía, Río Negro Province, Argentina. At the quarry are exposed siliceous rocks belonging to the Bajo de la Carpa and Anacleto formations (Santonian-Campanian, separated by an unconformity from the Rentería Formation (Upper Pliocene-Pleistocene. The Bajo de la Carpa

  3. CARACTERIZACIÓN Y PROCEDENCIA DE MATERIAS PRIMAS PARA LA PRODUCCIÓN DE ALFARERÍA PREHISPÁNICA EN LA QUEBRADA DE HUMAHUACA (PROVINCIA DE JUJUY, REPÚBLICA ARGENTINA: FRX, ICP Y PETROGRAFÍA DE PASTAS (Characterization and Provenance of Raw Materials for the Production of Prehispanic Pottery in Quebrada de Humahuaca (Jujuy Province, Argentina: XRF, ICP and Ceramic Petrography

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    Nicolás E. Larcher

    2016-03-01

    Full Text Available Se presenta un avance en la investigación arqueométrica de la alfarería prehispánica de la Quebrada de Humahuaca, territorio ubicado en el extremo noroeste de Argentina. Se analizaron 72 muestras de cerámicas y arcillas por FRX e ICP en tres laboratorios distintos. La integración de los datos y su procesamiento estadístico permitió identificar 4 grupos con características químicas definidas. La petrografía de pastas aportó información extra que ayudó a corroborar la congruencia de los agrupamientos obtenidos. Los resultados permitieron relacionar arcillas con cerámicas, diferenciar químicamente las arcillas y cerámicas de dos sectores de la Quebrada de Humahuaca estudiados e identificar posibles evidencias de interacción. ENGLISH: This article presents a new archaeometric investigation of prehispanic pottery from Quebrada de Humahuaca, a valley in the northwesternmost region of Argentina. We assayed 72 samples from pottery and clays using X-RF and ICP in three different laboratories. Data integration and statistical processing allowed us to identify 4 groups with defined chemical signatures. Ceramic petrology provided additional information that helped us to corroborate the coherence of the clustering. The results enabled us to correlate clays with pottery, to establish chemical differences between the clays and pottery of two areas of Quebrada de Humahuaca that have been investigated archaeologically, and to identify possible evidence of social interaction.

  4. Difilobotriosis humana: Un caso en área no endémica de la Argentina

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    Diego E. Cargnelutti

    2012-02-01

    Full Text Available La difilobotriosis es una parasitosis intestinal causada por la infección de cestodos del genero Diphyllobothrium. En la Argentina, la Patagonia Andina es considerada una zona endémica para esta parasitosis. La infección por Diphyllobothrium latum no ha sido previamente notificada en la provincia de Mendoza; en este trabajo comunicamos un caso de esta parasitosis que fue confirmada por el análisis de las características morfológicas de los huevos eliminados con la materia fecal de un paciente infectado. Se destaca la necesidad de información y capacitación de los profesionales de la salud en el diagnóstico y tratamiento de parasitosis no endémicas.

  5. Sistema de Justicia Juvenil en la Provincia de Buenos Aires, Argentina y métodos de evaluación / The Juvenile Justice System in the Province of Buenos Aires and evaluation methods

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    Jorge Folino

    2012-12-01

    Full Text Available Los objetivos del presente artículo son describir el sistema de justicia juvenil en la provincia de Buenos Aires (Argentina desde las perspectivas jurídica y ejecutiva, y comunicar avances científicos globales en la evaluación de los jóvenes que cometen actos disociales. En la provincia de Buenos Aires el sistema ha sido profundamente modificado en los últimos 15 años siguiendo las premisas de la Convención Internacional sobre los Derechos del Niño y dejando relegado el modelo del Patronato, que había regido previamente. Las instituciones encargadas de la ejecución de la intervención dispuesta por el Poder Judicial dependen actualmente de la Subsecretaria de Niñez y Adolescencia del Ministerio de Desarrollo Social y constan de centros cerrados, centros con régimen de semilibertad y centros de intervención ambulatoria (medidas alternativas a la prisión, tales como suspensión de juicio a prueba o tareas comunitarias. Las ciencias relacionadas con la salud mental y con el comportamiento vienen contribuyendo a la identificación de diversos factores influyentes en la conducta disocial y con el diseño de tipos de intervención para cada nivel de prevención. Sin embargo, hay una distancia importante entre las potencialidades del estado actual delconocimiento y la implementación. En las condiciones expuestas, queda configurado un período de transición que aún requiere optimización de la política de infancia con ajustes legislativos, judiciales y administrativos y con la capitalización de los aportes científicos.

  6. 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.

  7. 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.)

  8. Doña Mencía de Mendoza y su residencia en el Palacio del Real en Valencia

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    Hidalgo Ogáyar, Juana

    2011-03-01

    Full Text Available Documents preserved in the Archivo del Palau reveal the furnishings that Mencía de Mendoza had in the Royal Palace at Valencia, particularly luxury beds such as those of the Empress Isabel of Portugal and Queen Mary of France. Painters active at her court, especially Juan de Bolaños, are also discussed.

    Con la ayuda de varios documentos conservados en el Archivo del Palau, se dan a conocer diferentes enseres que Doña Mencía de Mendoza tenía en el Palacio del Real en Valencia, destacando camas de lujo como la de la Emperatriz Isabel de Portugal o la de María de Francia. Se dan a conocer algunos pintores activos en su corte como Juan de Bolaños.

  9. Forensic population data for 20 STR loci in Argentina

    OpenAIRE

    Borosky, Alicia; Toscanini, Ulises; Gómez, Andrea; Parolin, María Laura; Basso, Nestor Guillermo; Vullo, Carlos

    2017-01-01

    In order to provide useful information of forensic interest for the new markers included in the PowerPlex1 21 System (Promega Corp, USA), namely D1S1656, D6S1043 and D12S391, a population study was conducted in a sample of 907 unrelated healthy individuals from Argentina. Samples were randomly chosen from routine paternity testing. Blood samples or buccal swabs were collected after informed consent, taken from individuals of different urban populations from 7 provinces of Argentina: 464 indiv...

  10. Centralización de la represión, violencia paraestatal y redes internacionales represivas en la Mendoza predictatorial

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    Laura Rodriguez Aguero

    2014-04-01

    Full Text Available Durante el tercer gobierno peronista (1973-1976 comenzó a montarse el dispositivo represivo que marcó los prolegómenos del Terrorismo de Estado llevado adelante por la dictadura militar de 1976. En Mendoza, la violencia paraestatal fue llevada a cabo por el CAM (Comando Anticomunista Mendoza, y el Comando Moralizador Pío XII. En este trabajo nos proponemos realizar a partir del uso de fuentes escritas y del testimonio de algunos/as sobrevivientes, una reconstrucción del accionar paraestatal, en vistas a analizar, por un lado, cómo se constituyeron en la dinámica local, las redes de relaciones implicadas en la práctica represiva y la inflexión que implicó noviembre de 1975 en la centralización de la represión; y por otro lado, cómo se manifestó el carácter internacional de la represión y la idea de aniquilación del “enemigo interno” en Mendoza, partiendo de la hipótesis de que la misma adquirió proporciones inusitadas debido a su carácter de provincia de frontera y su cercanía con Chile, en un momento de articulación de redes represivas en el Cono Sur.

  11. Campylobacter spp.: prevalencia y caracterización feno-genotípica de aislamientos de pacientes con diarrea y de sus mascotas en la provincia de La Pampa, Argentina Campylobacter spp.: prevalence and pheno-genotypic characterization of isolates recovered from patients suffering from diarrhea and their pets in La Pampa Province, Argentina

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    Ana L Tamborini

    2012-12-01

    Full Text Available Se investigó la prevalencia de Campylobacter spp. en 327 pacientes con diarrea y en 36 animales (perros, gatos y pollos que convivían con pacientes en los que se detectó este patógeno; el estudio se llevó a cabo en Santa Rosa, La Pampa, Argentina. Se aisló Campylobacter spp. en 50/327 pacientes y en 12/36 animales, Campylobacter jejuni fue la especie más frecuente. Se detectó resistencia a ciprofoxacina (65 % y a tetraciclina (32 % en una selección de 35 aislamientos de origen humano. En el análisis por electroforesis de campo pulsado de 13 aislamientos de C. jejuni se identificaron siete subtipos genéticos. Dos subtipos agruparon aislamientos de pacientes y de sus respectivos perros, y un tercer subtipo agrupó 1 aislamiento humano y 2 de pollos de ese paciente. Si bien las aves son reconocidas como el principal reservorio, es importante fortalecer la vigilancia de Campylobacter spp. en mascotas, las cuales pueden ser portadores asintomáticos del patógeno.The prevalence of Campylobacter spp. was investigated in 327 patients suffering from diarrhea and in 36 animals (dogs, cats and chickens owned by the patients that presented infection by Campylobacter in Santa Rosa, La Pampa, Argentina. Campylobacter spp. was isolated in 50/327 patients and in 12/36 animals, being Campylobacter jejuni the most common species. Resistance to ciprofoxacin (65 % and tetracycline (32 % was found among 35 isolates of human origin studied. Seven genetic subtypes were observed among 13 C. jejuni isolates by pulsed feld gel electrophoresis. Two subtypes grouped isolates belonging to patients and their respective dogs whereas another subtype grouped one isolate of human origin and two isolates from the patient´s chickens. The results of this investigation highlight the need to strengthen surveillance of Campylobacter spp. not only in poultry, which is recognized as the main reservoir, but also in pets, which were shown to be asymptomatic carriers of the

  12. Estudio transversal de las parasitosis intestinales en poblaciones infantiles de Argentina

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    Graciela Teresa Navone

    2017-06-01

    Full Text Available RESUMEN Objetivo Determinar la distribución de las enteroparasitosis en niños de nueve provincias representativas del mosaico de ambientes contrastantes de Argentina. Métodos Estudio descriptivo, observacional y transversal en niños preescolares (de 5 años o menos y escolares (de 6 a 14 años de las provincias de Buenos Aires (muestra tomada entre 2005 y 2013, Chubut (2010-2013, Corrientes (2012, Entre Ríos (2010-2012, Formosa (2014, La Pampa (2006, Mendoza (2008-2011, Misiones (2005-2008 y 2013 y Salta (2012-2013. Se procesaron muestras seriadas, fecales y de escobillado anal, mediante técnicas de concentración. Los resultados se analizaron por sexo, intervalo de edad y provincia. Se calcularon la frecuencia de parasitosis (monoparasitosis y parasitosis múltiple, la riqueza de especies y el coeficiente de similitud de Sørensen. Resultados Misiones presentó la mayor frecuencia de niños parasitados y Chubut la menor (82,0% vs. 38,4%; p ˂ 0,01. El número de especies fue mayor en Misiones y Buenos Aires y menor en Chubut y La Pampa. Los varones estuvieron más parasitados que las mujeres solo en Buenos Aires. Las mayores frecuencias se encontraron en los preescolares de Buenos Aires y los escolares de Mendoza y Misiones (p < 0,05. La monoparasitosis fue más frecuente en Chubut (67,9% y las parasitosis múltiples en Formosa (69,2%. Las especies más frecuentes en la mayoría de las provincias fueron Blastocystis sp. y Enterobius vermicularis. De los geohelmintos, Misiones presentó la mayor frecuencia (23,3% y Mendoza la menor (0,6%; no se hallaron en Chubut, La Pampa y Salta. Buenos Aires, Formosa y Misiones presentaron una composición de especies similar, al igual que Chubut y La Pampa. Conclusiones Las frecuencias de parasitosis en Argentina responden al complejo mosaico de variabilidad climática y socioeconómica del país y revelan una tendencia descendente de norte a sur y de este a oeste.

  13. Medical applications of the nuclear energy

    International Nuclear Information System (INIS)

    Ugarte, Valentin E.

    2001-01-01

    The Nuclear Medicine School Foundation, in Mendoza (Argentina) was created in 1986 by the National Atomic Energy Commission (CNEA) and is supported by the Government of the Mendoza Province, the CNEA, and the National University of Cuyo. The main activities of the school are medical diagnosis using nuclear techniques and the training of physicians and technicians in nuclear medicine. Teletherapy and brachytherapy are also performed. The use of the PET is described in some detail

  14. Flora apícola primaveral en la región del Monte de la Provincia de La Pampa (Argentina Springtime beekeeping flora in the Monte region of La Pampa province (Argentine

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    Ofelia Naab

    Full Text Available Con el fin de evaluar la flora utilizada por Apis mellifera L. fueron analizadas muestras de miel inmadura y cargas corbiculares de dos apiarios demostradores ubicados en la Provincia Fitogeográfica del Monte, Provincia de La Pampa. Las muestras se extrajeron periódicamente durante la primavera y fueron analizadas aplicando las técnicas melisopalinológicas convencionales. La vegetación arbustiva nativa presentó la mayor abundancia y el mayor número de especies en óptima floración en noviembre. Las familias más representadas en los espectros polínicos de mieles inmaduras y de cargas corbiculares fueron: Zygophyllaceae ( Larrea divaricata Cav., Rhamnaceae ( Condalia microphylla Cav., Solanaceae ( Lycium sp., Asteraceae ( Senecio subulatus Don ex Hook. & Arn. y Verbenaceae ( Glandularia sp. - Junellia sp. - Verbena sp.. Los análisis polínicos evidenciaron que las especies nativas ofrecieron al mismo tiempo recursos nectaríferos y poliníferos sin embargo se observó una alta selección de pocos recursos florales. La oferta floral produjo mieles monoflorales de L. divaricata , C. microphylla y Lycium sp. Ambos apiarios pudieron diferenciarse teniendo en cuenta la diversidad de tipos polínicos y la presencia de ciertos taxones en las categorías de polen dominante y secundario.In order to evaluate the utilized flora by Apis mellifera L. we analized inmmature honey samples and corbicular pollen loads from two demonstrative apiaries located in the Monte Phytogeographical Province of La Pampa. The samples were periodically collected during springtime and were analyzed using the conventional melissopalynological techniques. The native flora presented the major abundance and the highest number of species at an optimum flowering level in november. The most represented families in the pollen spectrum of immature honeys and corbicular loads were: Zygophyllaceae ( Larrea divaricata Cav., Rhamnaceae ( Condalia microphylla Cav., Solanaceae

  15. Contribution to the knowledge of pathogenic fungi of spiders in Argentina. Southernmost record in the world.

    Science.gov (United States)

    Manfrino, Romina G; González, Alda; Barneche, Jorge; Tornesello Galván, Julieta; Hywell-Jones, Nigel; López Lastra, Claudia C

    The aim of this study was to identify entomopathogenic fungi infecting spiders (Araneae) in a protected area of Buenos Aires province, Argentina. The Araneae species identified was Stenoterommata platensis. The pathogens identified were Lecanicillium aphanocladii Zare & W. Gams, Purpureocillium lilacinum (Thom) Luangsa-ard, Houbraken, Hywel Jones & Samson and Ophiocordyceps caloceroides (Berk & M.A. Curtis). This study constitutes the southernmost records in the world and contributes to expanding the knowledge of the biodiversity of pathogenic fungi of spiders in Argentina. Copyright © 2016 Asociación Argentina de Microbiología. Publicado por Elsevier España, S.L.U. All rights reserved.

  16. Hongos patógenos de insectos en Argentina (Zygomycetes: Entomophthorales

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    C.C López Lastra

    2006-06-01

    Full Text Available Se informa de tres especies de hongos Entomophthorales en insectos encontrados en cultivos agrícolas en la Provincia de Buenos Aires, Argentina: Zoophthora radicans Batko (Brefeld; Entomophthora planchoniana Cornu y Pandora gammae (Weiser Humber. Se incluyen las medidas de las estructuras fúngicas.Pathogenic fungi of insects from Argentina (Zygomycetes: Entomophthorales. Three species of Entomophthorales entomopathogenic fungi (Zygomycotina: Zygomycetes have been identified from insects in agricultural crops (Buenos Aires Province, Argentina: Zoophthora radicans Batko (Brefeld; Entomophthora planchoniana Cornu and Pandora gammae (Weiser Humber. Fungal structure measurements are reported. Rev. Biol. Trop. 54(2: 311-315. Epub 2006 Jun 01.

  17. 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

  18. Projectile motion in Diego Hurtado de Mendoza's Mecánica and new Renaissance dynamics

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    Iommi Echeverría, Virginia

    2011-06-01

    Full Text Available This article considers Diego Hurtado de Mendoza’s translation of the Aristotelian Mechanics in relation to the humanistic and scientific Italian environment of the Renaissance. From the analysis of the last problems on dynamics, it demonstrates the affinity with the works of Piccolomini and Cardano. It also shows the originality of the exegesis made by the Spanish author of Problem XXXIV, in which he combines latemedieval physics with the Aristotelian explanation.Este artículo examina la traducción hecha por Diego Hurtado de Mendoza de la Mecánica aristotélica en el contexto del ambiente científico-humanista italiano de mediados del siglo XVI. A partir del análisis de los últimos problemas sobre dinámica, se demuestra su estrecha relación con las obras de Piccolomini y Cardano; sugiriéndose además la originalidad de la interpretación hecha por el autor español del problema XXXIV basada en la combinación de la física tardomedieval y la explicación aristotélica.

  19. Flood risk assessment. Case of study: Motozintla de Mendoza, Chiapas, Mexico

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    David A. Novelo-Casanova

    2016-09-01

    Full Text Available Due to its geographical location, the community of Motozintla de Mendoza (Motozintla in the State of Chiapas, Mexico, is continuously exposed to the impact of natural hazards. In this work, we assessed the flood risk of Motozintla considering the structural, socioeconomic, organizational, and global (structural, socioeconomic, and organizational vulnerabilities. In addition, we also measured the local risk perception. Spatial maps were generated to determine the most vulnerable and risk areas of this community. Our results indicate that the population has a high level of risk to flooding mainly because (1 the majority of the local houses has high structural vulnerability; (2 a high percentage of the families has a daily income less than the official Mexican minimum wage and lacks of basic public services as well as of proper social security services; (3 most of the community does not know any existing Civil Protection Plan; and (4 the community organization for disaster mitigation and response is practically non-existent. For these reasons, we believe that it is necessary for local authorities to establish in the short-term, preparedness, mitigation and response plans as well as land-use measures to reduce the risk to floods in Motozintla.

  20. El arriero y el transporte terrestre en el Cono Sur (Mendoza, 1780-1800

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    Lacoste, Pablo

    2008-12-01

    Full Text Available This paper explores the muleteer as an economic actor in terrestrial transportation in South Cone, specially in the route across the Andes in order to connect Atlantic and Pacific markets. Since Mendoza’s customs records, this study has processed 120.000 freight-carrying mules to know the origin and destiny places, main routes, volume and kind of charge. The muleteer promoted an intensive activity in terms of transportation, trade and wine industry. As a result, he leaded the rise of a regional proto-bourgeoisie.

    El artículo examina al arriero como actor económico en el transporte terrestre del Cono Sur, sobre todo en la ruta a través de la Cordillera de los Andes, para enlazar los mercados del Atlántico y el Pacífico. A partir de los manuales de Cargo y Data de la Aduana de Mendoza, se han procesado 120.000 mulas de carga para determinar los lugares de origen y destino, principales rutas, volumen y tipo de carga transportada. El arriero impulsó una intensa actividad en el transporte, el comercio y en la industria vitivinícola; como resultado, este actor promovió el surgimiento de una protoburguesía regional.

  1. The metamorphic basement of the Cordillera Frontal of Mendoza: New geochronologic and isotopic data

    International Nuclear Information System (INIS)

    Basei, Miguel; Ramos, Victor A.; Vujovich, Graciela I.; Poma, Stella

    1998-01-01

    The metamorphic rocks of the Cordillera Frontal exposed in the Cordon del Portillo, Mendoza were examined by Rb/Sr geochronology and Nd/Sm isotopic analysis. The Rb/Sr data defined a Devonian age for the last metamorphic episode, similar to the previous K/Ar and Ar/Ar ages obtained in this region and western Precordillera. The isotopic analysis identified three sets of model ages: 1.- The oldest corresponds to a set of meta sedimentary rocks with a model age of 1,400 to 1,700 Ma; 2.- A monzogranodiorite with a model age of 1,000 Ma; and 3.- Metabasites with model ages between 577 and 330 Ma. These rocks are interpreted as 1.- A typical Grenvillian derived basement; 2.- Late Paleozoic granitoids derived from a different Proterozoic basement; and 3.- Some Eopaleozoic metabasites tectonically inter fingered with the Grenvillian basement. These new data are coherent with the existence of a Laurentia derived terrane, Chilenia, that was separated by oceanic rocks from the basement of Pre cordillera during Eopaleozoic times. This last basement known as the Cuyania terrane, was also derived from Laurentia. (author)

  2. Distribución temporal y espacial de poblaciones larvarias de Spodoptera frugiperda (Smith (Lep.: Noctuidae en diferentes hospederos en provincias del norte de la Argentina Spatial and temporal distribution of Spodoptera frugiperda (Smith (Lep.: Noctuidae larval populations on different host plants in northern Argentina provinces

    Directory of Open Access Journals (Sweden)

    M. Gabriela Murúa

    Full Text Available Para estudiar la distribución temporal y espacial de larvas del "cogollero del maíz" Spodoptera frugiperda en diferentes plantas hospederas, se realizaron muestreos sistemáticos desde el año 2004 al 2007 en diferentes asociaciones de cultivos en las provincias de Tucumán, Salta y Santiago del Estero. Se consideró "asociación de cultivos" a una zona donde coexistían simultáneamente (en tiempo y espacio más de dos cultivos colindantes. Los cultivos monitoreados fueron maíz, sorgo granífero, alfalfa, caña de azúcar, soja, trigo, cártamo, garbanzo y malezas. En cada uno se muestrearon cinco puntos al azar de 1 m² y se revisaron las plantas, recolectándose las posturas y/o larvas presentes. Se encontraron 3620 larvas. La mayor cantidad se recolectó durante los meses del verano en las tres campañas monitoreadas en todas las provincias. Su presencia estuvo relacionada con la aparición de los cultivos estivales como el maíz y el sorgo granífero, en todas las provincias. La mayor cantidad de larvas se obtuvieron en maíz (2894, independientemente de los otros cultivos que formaban parte de la asociación. Siguiendo en orden de importancia, los otros hospederos con larvas fueron: sorgo granífero (272, alfalfa (125 y malezas (282. En base al número de larvas encontradas, la soja, trigo y caña de azúcar, cultivos que estuvieron presentes en casi todas las asociaciones, no son hospederos preferenciales de esta especie.In order to study the spatial and temporal distribution of fall armyworm Spodoptera frugiperda larval populations on different host plants, systematic samplings were made from 2004 to 2007 in different crop associations in the provinces of Tucumán, Salta and Santiago del Estero. A zone where more than two adjacent crops coexisted simultaneously (in time and space was considered a crop association. Sampled crops were corn, sorghum, alfalfa, sugarcane, soybean, wheat, safflower, chickpea and weeds. Five one

  3. A new genus and species of Eucoilinae (Hymenoptera, Cynipoidea, Figitidae parasitoid of Euxesta eluta Loew (Diptera, Otitidae attacked Bt sweet corn in Argentina

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    Fabiana E. Gallardo

    2017-02-01

    Full Text Available Euxestophaga Gallardo, a new genus of Eucoilinae (Hymenoptera, Cynipoidea, Figitidae and Euxestophaga argentinensis Gallardo, sp. n. from Argentina, are described and illustrated. This new genus belongs to the Ganaspini and morphologically resembles Epicoela Borgmeier and Striatovertex Schick, Forshage and Nordlander. A key to differentiate these genera is given. Specimens were reared from pupae of Euxesta eluta Loew (Diptera: Otitidae, attacked Bt sweet corn in Santa Fe province and other in Tucumán province (Argentina.

  4. Argentina: Political and Economic Conditions and U.S. Relations

    Science.gov (United States)

    2006-10-12

    left office six months before his six-year term ended, letting the winner of the 1989 election, Carlos Menem of the Justicialist Party (PJ, or the...Peronist Party), take office early. Menem transformed Argentina from a state-dominated protectionist economy to one committed to free market principles...term. Duhalde, who had been Vice President under Menem from 1989-1991, Governor of the Buenos Aires province, and the PJ’s 1999 presidential candidate

  5. La investigación científica como parte de las políticas de formación docente en la Argentina: La situación en dos jurisdicciones Scientific Research Into Teacher Training Policies In Argentina: The State Of Two Provinces

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    Guillermo Ruiz

    2008-12-01

    Full Text Available En este artículo se presentan los primeros análisis realizados en el marco de un proyecto de investigación acreditado por la ANCPyT y que aborda el estudio de los aspectos más novedosos dentro de las transformaciones de la formación docente operados en los últimos diez años: la introducción de actividades de investigación dentro de los institutos superiores de formación docente (ISFD. En tal sentido, en este artículo se describen y cuestionan el espacio y el rol asignado a la investigación científica en las reformas llevadas adelante en el sistema educativo desde los años 90', sus antecedentes, la concepción de investigación que subyace en la normativa y las transformaciones a que ella ha dado lugar en el nivel nacional. En consecuencia, se ofrecen los primeros resultados del estudio acerca de las políticas implementadas por la provincia de Buenos Aires y por el Gobierno de la Ciudad de Buenos Aires.This article focuses on the results of the first part of this research, accredited by ANPCyT. This project considers one of the most innovative aspect of teacher training policies: the introduction of research activities into non - university teacher training institute (ISFD. Then, the article describes and question the space and role giving to scientific research by national educational policies implemented by the State from the '90s. Thus, preliminary results anticipates the characteristics that theses policies are getting in Buenos Aires province and in the City of Buenos Aires.

  6. PRAMU. Contamination sources

    International Nuclear Information System (INIS)

    Asenjo, Armando R.

    2000-01-01

    Mining and milling activities have been carried out in Argentina during the last 40 years, and nowadays National Atomic Energy Commission (CNEA) of Argentina is undertaking the Uranium Mining Environmental Restoration Project (PRAMU). The aim of this project is to achieve that in all the places where uranium mining activities were developed, to restore the environment as much as it is possible, according to the legislation in force. The sites which are studied are: Malargue (Mendoza province), Cordoba (Cordoba province), Los Gigantes (Cordoba province), Huemul (Mendoza province), Pichinan (Chubut province), Tonco (Salta province), La Estela (San Luis province), Los Colorados (La Rioja province). In order to develop the restoration project in each site, one of the first task to be performed is to know quantities and the chemical, physicals and radiological characteristics of the contamination sources. In the present paper the activities of PRAMU in this field, are informed. (author)

  7. Geología de la región del Cerro Guanaquero, Río Diamante, Mendoza

    OpenAIRE

    Federico Fuentes; Victor A. Ramos

    2008-01-01

    El estudio realizado presenta nuevos datos sobre un sector poco conocido de la Cordillera Principal de Mendoza, en la alta cuenca del río Diamante en las adyacencias del cerro Guanaquero, y los primeros datos geocronológicos de sus rocas volcánicas. Las unidades geológicas presentes en el área se dividen en cuatro grupos principales: secuencias sedimentarias mesozoicas marinas y continentales intensamente plegadas y falladas; intrusivos y volcanitas intermedias de edad neógena; rocas volcánic...

  8. Helosis (Balanophoraceae en Argentina Helosis (Balanophoraceae in Argentina

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    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.

  9. La doctrina sobre el poder del príncipe en Alfonso Hojeda de Mendoza

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    Salustiano de DIOS

    2009-12-01

    Full Text Available RESUMEN: Alfonso Hojeda fue un notable canonista sevillano que en 1576 publicó en Venecia un libro acerca de los beneficios eclesiásticos. La obra se divide en dos partes: la primera está dedicada a argumentar en contra de la pluralidad de beneficios en una misma persona, de acuerdo con los decretos tridentinos de reforma, mientras la segunda trata en cambio de la compatibilidad de beneficios mediante dispensa papal. Los propios términos en que se manifiestan las dos partes ya están indicando las contradicciones en que ha de moverse el autor, difíciles de salvar. La doctrina de la causa es, además de la distinción entre órdenes normativos, la principal herramienta conciliatoria para Hojeda. El papa está desligado del derecho positivo o humano, pues de otro modo no podría dispensar, o privilegiar, mas sólo puede hacerlo con justa causa.ABSTRACT: Alfonso Hojeda de Mendoza was an outstanding canonist that in 1576 published a book in Venice on the eclesiástica benefits. The book is divided into two parts: the first one is devoted to argue against the plurality of benefits in the same person, according to Trento's decrees, while the second one deals, however, with the compatibility of benefits by the Pope's dispense. The own terms in which both parts are expressed reveal the contradictions, in which the author must move, always difficult to avoid. The doctrine of the cause, as well as the distinction among normative orders, is the main conciliatory tool for Hojeda. The Pope is unlinked to human or positive right, otherwise he could not dispense or privilege, however he can only do it for a just cause.

  10. 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

  11. A LA SOMBRA DEL ESTADO: COMUNALIZACIÓN INDÍGENA EN PARAJES DE LA PRE CORDILLERA DE RÍO NEGRO, ARGENTINA / In the shadow of the state: Indian communalization in sites from the Rio Negro province pre Cordillera, Argentina

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    Lorena Cañuqueo

    2015-12-01

    Full Text Available Nos proponemos analizar un proceso de comunalización situado en parajes rurales de la cuenca del arroyo Comallo, provincia de Río Negro. En agosto de 2011 se conformó formalmente allí la comunidad mapuche Newen Ñuke Mapu que pasó a integrarse a las comunidades denominadas “nuevas” en la provincia, por contraste con aquellas consideradas “tradicionales”. Nuestro argumento es que esa novedad no es tal, sino que subyace un proceso de comunalización de larga duración que ha estado en permanente disputa con políticas estatales atomizadoras. En este sentido, se trata de un colectivo que se ha desarrollado a la sombra del estado argentino. Comenzaremos con un recorrido histórico en función de ubicar este caso en el proceso de incorporación del pueblo mapuche al estado nacional. A continuación analizamos el proceso de comunalización en tres escenarios históricos anclados en crisis de diferente tipo. 1 El presente que retoma la conformación de la comunidad mapuche. A partir de este aparecen como instancias de referencia consideradas fundantes de lo colectivo dos momentos históricos anteriores. 2 1984, periodo en el que se conforman las cooperativas laneras, entre otras formas de organización indígena. 3 1930, crisis que marcó el avance de la propiedad privada en la zona y que implicó estrategias de visibilización y demanda dirigidas al estado.  AbstractIn this article we intend to analyze a process of communalization located in the rural areas of the province of Río Negro. In August 2011 the Mapuche community Newen Ñuke Mapu came formally into existence. Since then on it became one more of the “new” indigenous communities in contrast to those acknowledge as “traditional”. Our argument is that there is no such novelty but there is an underlying long term process of communalization that has been in constant dispute with state policies. In this sense, we describe it as a grouping that has developed at the shadow of

  12. Recuperación post-fuego de la comunidad de líquenes epífitos en la provincia de Córdoba, Argentina Post-fire recovery of the epiphytic-lichen community in Cordoba province, Argentina

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    Juan Manuel Rodriguez

    2009-09-01

    Full Text Available Los líquenes son reconocidos bioindicadores de la calidad del ambiente. Estudios de comunidades de líquenes en relación a los incendios forestales, han demostrado como responden al fuego por encima de las variables microambientales que modelan la comunidad en ausencia de este disturbio. El objetivo de la presente contribución es reconocer el efecto del fuego en la comunidad de líquenes del Bosque Serrano en Córdoba. Se seleccionaron dos zonas, una testigo y otra sometida a fuego en 1996. A través de un muestreo sistemático y estandarizado se relevó la presencia y cobertura de especies de líquenes en árboles y arbustos en las dos áreas estudiadas. Entre el área testigo y el incendiado la diversidad y cobertura de líquenes es similar pero varia su composición. Las especies en la zona incendiadas corresponden a líquenes heliófilos y adaptados a situaciones de estrés. El fuego como disturbio frecuente favorece la presencia de pocas especies con importantes coberturas que resistan las condiciones que el disturbio impone. Los incendios de alta intensidad y frecuencia dejan a la comunidad de líquenes sin posibilidades de desarrollo, disminuyendo la diversidad general y la calidad de los sistemas forestales en los que viven.Lichens are recognized bioindicators of environmental quality. Studies of lichen communities in relation to forest fires have shown the response to fire over micro-environmental variables that shape the community in the absence of this disturbance. The aim of this contribution is to recognize the effect of fire on the lichen community of Sierra Chaco in Cordoba province. Two areas were selected, one without past fire and the other with fire in 1996. Coverage and presence of lichen species on trees and shrubs were recorded in the two areas using systematic, standardized sampling. Diversity and coverage of lichens is similar between the two areas but composition varies. The lichen species in the burned area are

  13. Queratitis por Acanthamoeba sp.: primer caso confirmado por aislamiento y tipificación molecular en Bahía Blanca, provincia de Buenos Aires, Argentina Acanthamoeba sp. keratitis: first case confirmed by isolation and molecular typification in Bahía Blanca, Buenos Aires Province, Argentina

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    M. L. Gertiser

    2010-06-01

    . Isolated amoebae were morphologically and molecularly classified as members of the Acanthamoeba genus. This is the first case of keratitis caused by Acanthamoeba in Bahía Blanca, Buenos Aires Province, where the parasite was identified by specific and sensitive molecular techniques.

  14. The blue land planarian Caenoplana coerulea, an invader in Argentina La planaria terrestre azul Caenoplana coerulea, un invasor en Argentina

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    Lisandro Héctor Luis-Negrete

    2011-03-01

    Full Text Available The blue land planarian Caenoplana coerulea is reported from Argentina (Buenos Aires province. We found C. coerulea in the east central region of Argentina in anthropic environments. The specimens that we found have the characteristic of the species found in others regions; that is, a bluish dorsal surface with a yellow mid-dorsal stripe and eyes forming a single row around the anterior tip, clustered laterally. This is the first record of this species from the Neotropical Region, and together with Bipalium kewense are the only 2 species of exotic terrestrial planarians so far recorded in Argentina.La planaria terrestre azul Caenoplana coerulea se registra para el centro este de Argentina (provincia de Buenos Aires, en ambientes antropizados. Los ejemplares encontrados presentan las características de la especie registrada en otras regiones, con una superficie dorsal azulada y una hilera medio dorsal amarilla, y ojos formando una hilera alrededor del extremo anterior, agrupados lateralmente. Es la primera vez que se cita dicha especie en la Región Neotropical, y junto a Bipalium kewense son las únicas planarias terrestres exóticas registradas en Argentina.

  15. Un género nuevo de Platynini (Coleoptera: Carabidae de la Argentina A new genus of Platynini (Coleoptera: Carabidae from Argentina

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    Sergio ROIG-JUÑENT

    2003-07-01

    Full Text Available Los Platynini constituyen un grupo de carábidos distribuidos ampliamente en América del Sur, existiendo la mayor diversidad de especies en las regiones tropicales de altura de Los Andes. En la Argentina y Chile, la mayoría de las especies de Platynini se hallan distribuidas en áreas extracordilleranas, conociéndose pocos datos para la región Andina. A partir de recolecciones realizadas en la Precordillera y Cordillera de los Andes en Mendoza (Argentina, se hallaron ejemplares pertenecientes a dos especies de dicha tribu de carábidos. El estudio de este material ha permitido establecer dos nuevas especies cuyos caracteres justifican su agrupación en un nuevo género, Austroglyptolenus nov. gen. La presencia de una carena dorsal en la protibia y el poseer la base del lóbulo medio esclerotizado agruparían a Austroglyptolenus nov. gen. con los géneros Glyptolenus Bates y Glyptolenoides Perrault. De ellos se diferencia por la forma de los metatarsitos, ausencia de diente en el saco interno y la presencia de un anillo de espículas en la bursa copulatriz. Por ello las especies de Austroglyptolenus nov. gen., A. mendozensis sp. nov. y A. precordillerae sp. nov. están más relacionadas con las especies de América del Sur tropical que con los Platynini australes extramontanos de la Argentina y Chile. En este aporte se proveen las descripciones e ilustraciones del género y de las nuevas especies, así como también claves para identificar los nuevos taxones.Platynini is a widespread tribe of carabids in South America, having the largest diversity of species in the tropical highlands of Andes. In Argentina and Chile, most of the platinine species are distributed in extra-Andean regions. Several specimens of platynine have been found in samples from the Precordillera and the Andes in Mendoza (Argentina. The study of these materials revealed two new species, whose characters justify the creation of a new genus, Austroglyptolenus gen. nov. The

  16. La mortalidad por armas de fuego en Argentina entre 1990 y 2008 Firearm mortality in Argentina, 1990-2008

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    Marina Gabriela Zunino

    2012-04-01

    Full Text Available Este es un estudio epidemiológico descriptivo de la mortalidad por armas de fuego en Argentina, 1990-2008. Se analizaron los porcentajes y las tasas de mortalidad por armas de fuego entre las jurisdicciones del país. Los datos provienen de la Dirección de Estadística e Información en Salud, Ministerio de Salud y Ambiente, República Argentina. Entre 1990-2008 se produjeron 358.484 muertes por causas externas de las cuales el 16,6% (59.339 correspondieron a armas de fuego. La Provincia de Buenos Aires presentó el porcentaje y tasas cruda y ajustada superiores. Las jurisdicciones de la Región Pampeana (incluye Provincia de Buenos Aires presentaron un perfil más homogéneo y similar al del país: aumento de las tasas en 1999-2002 y disminución en 2003-2006. Estos hallazgos se explicarían en parte por el deterioro socioeconómico vivido en Argentina a fines del siglo XX, que habría tenido mayor impacto en Provincia de Buenos Aires, por ser ésta una de las provincias con mayor desarrollo y dinamismo económico de Argentina. La situación de Provincia de Buenos Aires habría estado agravada por el hecho de tener una de las fuerzas policiales más represivas del país.This is a descriptive epidemiological study of firearm mortality in Argentina, 1990-2008. The study compared the firearm mortality percentages and rates between the country's jurisdictions. The data are from the Office of Health Statistics and Information, Ministry of Health. From 1990 to 2008 there were 358,484 deaths from external causes, of which 16.6% (59,339 were caused by firearms. The Province of Buenos Aires showed the highest percentage and crude and adjusted rates. The jurisdictions in the Pampeana region (including the Province of Buenos Aires showed a more homogeneous profile, similar to that of the country as a whole, with an increase in the rates from 1999 to 2002 and a decrease from 2003 to 2006. These findings are partially explained by the country

  17. Documentos arcebispais no Tombo H da catedral de Santiago: Gómez Manrique e Lopo de Mendoza

    Directory of Open Access Journals (Sweden)

    Cabana Outeiro, Alexandra

    2003-12-01

    Full Text Available The cartulary H of Santiago de Compostela's Cathedral -register book compiled by notary Afonso Eanes Jacob-contains documents of the chapter of Compostela dated 1391 to 1409 and includes copies of earlier documents. In this paper, the edition of five documents issued by archbishops Gómez Manrique (1351-1362 and Lope de Mendoza (1399- 1445 and contained in this book is proposed. An introductory note is also included.

    [gl] No Tombo H da Catedral de Santiago de Compostela, libro rexistro elaborado polo notario Afonso Eanes Jacob, recógese documentación do cabido compostelán entre os anos 1391 e 1409, incluíndo tamén traslados de documentos anteriores. Neste artigo faise unha edición de cinco documentos emitidos polos arcebispos Gómez Manrique (1351-1362 e Lope de Mendoza (1399-1445, que se insiren neste libro, achegándose tamén unha nota introductoria.

  18. [Soil transmitted helminthiasis in Argentina. A systematic review].

    Science.gov (United States)

    Socías, M Eugenia; Fernández, Anabel; Gil, José F; Krolewiecki, Alejandro J

    2014-01-01

    A systematic review of surveys performed between 1980 and 2011 (published in MEDLINE/Pubmed and/or LILACS indexed journals, available in the baseline data from a Mass Deworming National Program (MDNP, 2005) was used to identify the prevalence, distribution and detection of risk areas for soil transmitted helminth infections (STH) in Argentina. We found 310 publications in the database using the pre-defined key-words (medical subject headings) for research purposes. Only 24 articles with 26 surveillance sites in 8 provinces and a total of 5495 surveyed individuals fulfilled the inclusion criteria. Frequency rates for STH had a wide range: Ascaris lumbricoides: 0-67%, hookworms: 0-90%, Trichuris trichiura: 0-24.6 and Strongyloides stercoralis: 0-83%. The estimated combined incidence varied from 0.8% to 88.6%. Baseline surveys from the MDNP reporting on 1943 children from 12 provinces confirmed the heterogeneity, with combined STH frequency rates ranging from 0 to 42.7%. Surveys included in this review showed that the distribution of STH in Argentina is not homogeneous, with areas of high incidence (> 20%) in the northeastern and northwestern provinces where mass deworming activities would be highly beneficial. In several surveys, the high overall incidence was mostly due to hookworms and S. stercoralis, a situation to be considered when selecting diagnostic and therapeutic control strategies. The scarcity or absence of data from various provinces and the availability of less than 8000 surveyed individuals should be considered.

  19. Review of Arciaga, Juárez y Mendoza (Coords. (2013. Introducción a la Psicología Social

    Directory of Open Access Journals (Sweden)

    Ali Lara

    2014-11-01

    Full Text Available Reseña del libro: Salvador Arciaga Bernal, Juana Juárez Romero y Jorge Mendoza Garcia  (coord. (2013. Introducción a la Psicología Social. México: UAM-MAPorrúa. ISBN 978-607-28-0109-7

  20. A new species of Hyalella (Crustacea, Amphipoda, Dogielinotidae) from the Atlantic Forest of Misiones, Argentina

    Science.gov (United States)

    Colla, María Florencia; César, Inés Irma

    2015-01-01

    Abstract The freshwater genus Hyalella Smith, 1874 has a distribution restricted to the Western Hemisphere with most species being found in South America. In this report we describe a new species of Hyalella from the Atlantic Forest of the Misiones province, Argentina. PMID:25685030

  1. DIASTATEA (CAMPANULACEAE, LOBELIODEAE, NUEVO GÉNERO PARA LA FLORA ARGENTINA

    Directory of Open Access Journals (Sweden)

    Alberto C. Slanis

    2009-01-01

    Full Text Available The genus Diastatea (Campanulaceae, Lobelioideae is recorded for the first time for Argentina in antropic enviroments of the Yungas phytogeographic province (Jujuy, between 1,100 and 2,000 m. We describe and illustrate D. micrantha, the only species collected up to now, including a key to discern it from Lobelia xalapensis, its closest taxon.

  2. Macro fossils vegetable in Palmar formation (later pleistocene) in Entre Rios - Argentina

    International Nuclear Information System (INIS)

    Ramos, R.; Brea, M.; Krohling, D.

    2012-01-01

    This work is about the macro fossil knowledge preserved like wood fossils in the El Palmar Formation (Late Pleistocene) from a systematic - anatomical as well as paleoecological and paleoclimate point of view.The paleo Flora comes from various fossil located in the province of Entre Rios - Argentina

  3. Students' Perception of Plant and Animal Species: A Case Study from Rural Argentina

    Science.gov (United States)

    Nates, Juliana; Campos, Claudia; Lindemann-Matthies, Petra

    2010-01-01

    Exotic species seriously affect local biodiversity in Argentina. This article investigates how students in San Juan province perceive native and exotic species. With the help of a written questionnaire, 865 students (9-17 years old) were asked to name the plant and animal they liked most, disliked most, and perceived as most useful, and to name…

  4. Olivine Major and Trace Element Compositions in Southern Payenia Basalts, Argentina

    DEFF Research Database (Denmark)

    Søager, Nina; Portnyagin, Maxim; Hoernle, Kaj

    2015-01-01

    Olivine major and trace element compositions from 12 basalts from the southern Payenia volcanic province in Argentina have been analyzed by electron microprobe and laser ablation inductively coupled plasma mass spectrometry. The olivines have high Fe/Mn and low Ca/Fe and many fall at the end of t...

  5. 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...

  6. 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)

  7. 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 ...

  8. Age and geochemistry of Alumine's Ignimbrites, Neuquen province, Argentina

    International Nuclear Information System (INIS)

    Lagorio, Silvia; Massaferro, Gabriela

    1998-01-01

    Geochemical and geochronological data from Alumine riolitic welded tuffs are analysed. Minor elements show enrichment in Rb, Th and K and depletion in Nb, Ti, P and Sr. La/Yb ratios are low. The geochemical features are consistent with a volcanic arc genesis. The radiometric data obtained by K/Ar method point out a Paleocene age for these rocks, allowing to correlate them with the Ventana Formation or the equivalent Auca Pan Formation. (author)

  9. Test strip at the Musters lake area, Chubut province (Argentina)

    International Nuclear Information System (INIS)

    Lopez, Luis E.

    1998-01-01

    A local test strip to determine both the system sensitivities and height attenuation coefficients was defined at the Musters Lake area, for its use in airborne spectrometric surveys in the South Patagonia region. The selected calibration range presents both low and uniform radioelement concentration. The mean spectrometer values obtained at ground level were 1.8 % K, 1.6 ppm eU and 7.3 ppm eTh while the variation coefficients were 7.5 %, 27.0 %, and 10.2 %, respectively. These values as well as range dimensions, moisture condition, easy access, easy navigation for aircraft, proximity to a fresh water body and with no flight restrictions are consistent with the international recommendations for setting up a test range. (author)

  10. Characterization of landslide dams in the San Juan province (Argentina)

    Science.gov (United States)

    Penna, Ivanna; Longchamp, Celine; Derron, Marc-Henri; Jaboyedoff, Michel

    2013-04-01

    River blockages caused by landslide deposition are common phenomena in active mountain chains, influencing erosion-sedimentation patterns and acting as primary and secondary hazards. Regional scale analyses regarding their spatial distribution and morphometry allow establishing boundary conditions for their occurrence and stability, and determine differences among regions with different landscape and climatic conditions. Owing to the combination of endogenous and exogenous factors, landslide dams are frequent phenomena in the Andes. In the Argentinean NW and the Patagonian Andes, previous studies showed that stability of landslide dams determined by morphometric parameters generally matched satisfactorily with dam behavior, with some exceptions in which climatic component played an important role in dam longevity. Aiming to expand the knowledge of landslide dams in the Argentinean Andes, in this work we analyzed the stability of rock avalanche dams in the Pampeam flat slab subduction zone. In the study area, mountain dynamics creates suitable conditions for the occurrence of 34 rock avalanches with volumes up to 0.3 km3. They developed in deeply carved valleys (Cordillera) and Inter-thrust valleys (Precordillera). 22 impoundments of rivers resulted from channelized rock avalanches with long runouts (4-10 km) that blocked tributaries rivers, but most of them by rock avalanches that filled the valley bottom, with run up in the opposite slope and limited movement parallel to the valley axis. Most of the dams breached in unknown times, except for the last event that occurred on November 12th 2005. The quantification of morphometric parameters and contributing areas indicates the existence of dams with dimensionless blockage index above 2.75 (stable domain) and below 3.08 (instable domain). The Los Erizos dam in our study area and the Barrancas dam in the Patagonian Andes show that besides morphometric parameters, climatic conditions are decisive. Stable landslide dams lasting for millennia can collapse suddenly due to anomalous weather conditions, and unstable dams can have a higher longevity depending on the season controlling the inflow into the lake.

  11. Test strip at the Musters Lake area, Chubut province (Argentina)

    International Nuclear Information System (INIS)

    Lopez, Luis E.

    1998-01-01

    A local test strip to determine both the system sensitivities and height attenuation coefficients was defined at the Musters Lake area, for its use in airborne spectrometric surveys in the South Patagonia region. The selected calibration range presents both low and uniform radioelement concentrations. The mean spectrometer values obtained at ground level were 1.8 % K, 1.6 ppm eU and 7.3 ppm eTh while the variation coefficients were 7.5 %, 27.0 %, and 10.2 %, respectively. These values as well as range dimensions, moisture condition, easy access, easy navigation for aircraft, proximity to a fresh water body and with no flight restrictions are consistent with the international recommendations for setting up a test range. (author)

  12. Quaternary basaltic volcanism in the Payenia volcanic province, Argentina

    DEFF Research Database (Denmark)

    Søager, Nina

    primitive basalts and trachybasalts but also more evolved samples from the retroarc region and the larger volcanoes Payún Matrú and Payún Liso are presented. The samples cover a broad range of compositions from intraplate lavas similar to ocean island basalts to arc andesites. A common feature found...... are isotopically similar to the Andean Southern Volcanic Zone arc rocks and their mantle source possibly resembled the source of South Atlantic N-MORB prior to addition of fluids and melts from the subduction channel. However, it must have been more enriched than the estimates of depleted upper mantle from...... the lithosphere is thinnest and possibly in areas of elevated mantle temperatures. The pyroxenite melts formed at deeper levels react with the surrounding peridotite and thereby changes composition leading to eruption of melts which experienced variable degrees of melt-peridotite interaction. This can presumably...

  13. Los Mares Interiores. (Libro de Poemas del Académico Juan Mendoza Vega

    Directory of Open Access Journals (Sweden)

    Efraim Otero Ruiz

    2001-12-01

    Full Text Available

    (Presentación del libro en la Fundación Santillana para Iberoamérica, Bogotá, Noviembre 23, 2001.

    Ha querido la deferencia del señor  exPresidente Belisario Betancur, Presidente de la Fundación Santillana para lberoamérica, que sea yo quien les presente el libro "Los mares interiores" del médico, periodista y poeta Juan Mendoza Vega. Tarea que acometo con singular afecto, nacido de una amistad que supera ya los 40 años y de una admiración continua por las dotes intelectuales y artísticas que lo colocan en un sitial especial entre los médicos de Colombia.

    Nacido en Chinácota y bachiller en Pamplona, su infancia y adolescencia transcurrieron en esos paisajes idílicos que se extienden entre el río Pamplonita y las colinas de Iscalá, donde ha trasegado la vida de muchos hijos ilustres del Norte de Santander. Después cursó sus estudios de Medicina en la Universidad
    Nacional, en Bogotá, entre 1952 y 1957, habiéndose graduado de médico en 1960 a los dos años de haber iniciado su especialización en neurología y neurocirugía, temas que constituirían la mayor dedicación de su vida. Pues de ahí saltó a la cátedra de la especialidad en la Facultad de Medicina del Rosario entre 1969 y 1985, siendo además iniciador de la cátedra y profesor de Historia de la Medicina en la misma Universidad desde 1980 hasta el presente; al tiempo, ha sido profesor de Etica Médica allí mismo desde 1983. A estas actividades de planta ha unido su participación como catedrático invitado en numerosas instituciones y universidades de dentro y fuera del país. Y la autoría de 55 publicaciones científicas en revistas nacionales e internacionales sobre temas de neurología y neurocirugía, ética médica e historia de la medicina...


  14. Primera cita de Aleiodes laphygmae (Hymenoptera: Braconidae para Argentina y de su asociación con larvas de Spodoptera eridania (Lepidoptera: Noctuidae First record of Aleiodes laphygmae (Hymenoptera: Braconidae for Argentina and its association with larvae of Spodoptera eridania (Lepidoptera: Noctuidae

    Directory of Open Access Journals (Sweden)

    Liliana Valverde

    2012-06-01

    Full Text Available Se reporta por primera vez para Argentina Aleiodes laphygmae (Viereck (Hymenoptera: Braconidae y como parasitoide de larvas de Spodoptera eridania (Stoll (Lepidoptera: Noctuidae, en plantaciones de soja en la provincia de Tucumán (Argentina. Se provee información biológica como hábitos, hospedadores y distribución.Aleiodes laphygmae (Viereck (Hymenoptera: Braconidae, is reported for the first time for Argentina. It is also reported parasitizing larvae of Spodoptera eridania (Stoll (Lepidoptera: Noctuidae in soybeans crops in Tucumán province (Argentina. Biological information on habits, hosts and distribution is provided.

  15. [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.

  16. Acerca De La Identidad Boliviana En Argentina. Un Análisis De Tres Casos De Estudio En La Provincia De Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Mercedes Mariano

    2015-08-01

    Full Text Available This paper is about the representations, practices and cultural expressions carried out by groups of Bolivian immigrants and their descendants in the cities of Olavarria, Tandil and Azul in the province of Buenos Aires, Argentina. For this purpose, the three case studies presented are analyzed based on the theoretical notions of identities and ethnic groups proper to the field of social anthropology. It thus seeks to contribute to knowledge about the construction of the identities of Bolivian immigrants in Argentina and, especially, to the discussion of those perspectives that propose the cultural assimilation of these groups into the host society.

  17. Propiedades hidrofísicas de un hapludol típico de Córdoba en relación al pisoteo animal Hydrophysical properties of a typical hapludol of Córdoba province, Argentina, in relation to animal trampling

    Directory of Open Access Journals (Sweden)

    Flavia Soledad Cabrera

    2011-12-01

    Full Text Available El objetivo del presente trabajo fue evaluar el efecto del pisoteo animal sobre algunas propiedades hidrofísicas de un Hapludol típico implantado con Triticale (Triticosecale Wittmack, mediante un sistema de pastoreo rotativo (7 días de ocupación y 42 días de descanso con cuatro niveles de carga animal que correspondieron a asignaciones de forraje de 2, 4, 6 y 8 kg materia seca cada 100 kg (% de peso vivo animal por día, en dos condiciones de humedad edáfica: Suelo Seco, con 11% y Suelo Húmedo con 18%. Se tomó como referencia un sistema no pastoreado. El ensayo se realizó en el campo experimental de la Universidad Nacional de Río Cuarto, al suroeste de Córdoba, bajo un diseño experimental en bloques al azar con arreglo en parcelas divididas. Se evaluó densidad aparente (DA, compactación relativa (CR, porosidad total (PT a 0-5 cm y 5-10 cm de profundidad y velocidad de infiltración inicial (VII y final (VIF. La DA presentó un aumento (pThe aim of this study was to evaluate the effect of animal trampling on some hydrophysical properties of a typical Hapludol implanted with «Triticosecale Wittmack», by means of a rotational grazing system (7 days of occupation and 42 days off with four stocking rates corresponding to forage allowances of 2, 4, 6 and 8 kg dry matter/100 kg of live animal weight per day, under two soil moisture contents: dry soil, with 11% and moist soil, with 18% water content. The results were compared to an ungrazed reference system. The study was conducted at the experimental station of the Universidad Nacional de Rio Cuarto, southwestern Córdoba province, Argentina, under an experimental design in randomized blocks with a split plot arrangement. The parameters assessed were: bulk density (BD, relative compaction (RC, total porosity (TP at 0-5 cm and 5-10 cm depths, and initial and final infiltration rate (IIR and FIR, respectively. BD showed an increase (p <0.05 at the 0-10 cm depth, which was more pronounced

  18. Disparities in pediatric leukemia early survival in Argentina: a population-based study

    Directory of Open Access Journals (Sweden)

    Gilda Garibotti

    2014-10-01

    Full Text Available OBJECTIVE: To identify disparities-using recursive partitioning (RP-in early survival for children with leukemias treated in Argentina, and to depict the main characteristics of the most vulnerable groups. METHODS: This secondary data analysis evaluated 12-month survival (12-ms in 3 987 children diagnosed between 2000 and 2008 with lymphoid leukemia (LL and myeloid leukemia (ML and registered in Argentina's population-based oncopediatric registry. Prognostic groups based on age at diagnosis, gender, socioeconomic index of the province of residence, and migration to a different province to receive health care were identified using the RP method. RESULTS: Overall 12-ms for LL and ML cases was 83.7% and 59.9% respectively. RP detected major gaps in 12-ms. Among 1-10-year-old LL patients from poorer provinces, 12-ms for those who did and did not migrate was 87.0% and 78.2% respectively. Survival of ML patients < 2 years old from provinces with a low/medium socioeconomic index was 38.9% compared to 62.1% for those in the same age group from richer provinces. For 2-14-year-old ML patients living in poor provinces, patient migration was associated with a 30% increase in 12-ms. CONCLUSIONS: Major disparities in leukemia survival among Argentine children were found. Patient migration and socioeconomic index of residence province were associated with survival. The RP method was instrumental in identifying and characterizing vulnerable groups.

  19. 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

  20. 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...

  1. 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)

  2. 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)

  3. 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.

  4. El tropero y el origen de la burguesía en el Cono Sur (Mendoza, siglo XVIII

    Directory of Open Access Journals (Sweden)

    Lacoste, Pablo

    2005-01-01

    Full Text Available Este artigo aprofunda a análise sobre a carreta e o tropeiro, para definir em que medida contribuíram para o processo de construção de uma cultura empresarial na América Colonial, levando ao surgimento de uma burguesia. Atenta-se, em especial, para temas como mobilidade social, riscos empresariais, fomento do crédito em confiança ou por hipoteca de carretas, circulação de idéias e configuração de um ethos capitalista. Este trabalho constitui a continuação e a conclusão de um anterior intitulado "Carretas y transporte terrestre bioceánico: la ruta Buenos Aires-Mendoza en el siglo XVIII" (Estudos Ibero-Americanos, vol. XXXI, nº 1, 2005

  5. A probability index for surface zonda wind occurrence at Mendoza city through vertical sounding principal components analysis

    Science.gov (United States)

    Otero, Federico; Norte, Federico; Araneo, Diego

    2018-01-01

    The aim of this work is to obtain an index for predicting the probability of occurrence of zonda event at surface level from sounding data at Mendoza city, Argentine. To accomplish this goal, surface zonda wind events were previously found with an objective classification method (OCM) only considering the surface station values. Once obtained the dates and the onset time of each event, the prior closest sounding for each event was taken to realize a principal component analysis (PCA) that is used to identify the leading patterns of the vertical structure of the atmosphere previously to a zonda wind event. These components were used to construct the index model. For the PCA an entry matrix of temperature ( T) and dew point temperature (Td) anomalies for the standard levels between 850 and 300 hPa was build. The analysis yielded six significant components with a 94 % of the variance explained and the leading patterns of favorable weather conditions for the development of the phenomenon were obtained. A zonda/non-zonda indicator c can be estimated by a logistic multiple regressions depending on the PCA component loadings, determining a zonda probability index \\widehat{c} calculable from T and Td profiles and it depends on the climatological features of the region. The index showed 74.7 % efficiency. The same analysis was performed by adding surface values of T and Td from Mendoza Aero station increasing the index efficiency to 87.8 %. The results revealed four significantly correlated PCs with a major improvement in differentiating zonda cases and a reducing of the uncertainty interval.

  6. Algunas hazañas de las muchas de don García Hurtado de Mendoza, comedia genealógica de nueve ingenios

    Directory of Open Access Journals (Sweden)

    Carlos Mata Induráin

    2013-12-01

    Full Text Available Algunas hazañas de las muchas de don García Hurtado de Mendoza, marqués de Cañete, pieza escrita en colaboración por nueve ingenios encabezados por Luis de Belmonte Bermúdez, se representó y publicó en Madrid en 1622. Se trata de una comedia genealógica de encargo, que formó parte de la campaña de propaganda emprendida por la familia de los Hurtado de Mendoza para prestigiar la figura de don García Hurtado de Mendoza, cuarto marqués de Cañete, quien como gobernador de Chile (1557-1561 había logrado notables avances en la pacificación del rebelde territorio de Arauco, pero cuyos méritos no quedaron reconocidos por Alonso de Ercilla en La Araucana. Se estudia, sobre todo, la imagen que la pieza ofrece del noble personaje en el contexto de su actuación en la guerra de Arauco, la cual generó en el Siglo de Oro un abundante corpus de obras literarias. Algunas hazañas de las muchas de don García Hurtado de Mendoza, marqués de Cañete, collaborated play by nine playwrights headed by Luis Belmonte Bermúdez, was represented and published in Madrid in 1622. It´s a genealogical comedy, which was part of the propaganda campaign launched and paid by Hurtado de Mendoza’s family, in order to give prestige to the figure of don García Hurtado de Mendoza, 4th Marquis of Cañete, who as Governor of Chile (1557-1561 had achieved remarkable progress in pacifying the rebellious territory of Arauco, but whose merits were not recognized by Alonso de Ercilla in La Araucana. The article studies the image of don García in the context of the Arauco War, which generated a rich corpus of literary works in the Spanish Golden Age. Key words: Spanish Drama of the Golden Age, genealogical comedy, theatre and patronage, García Hurtado de Mendoza, Arauco war, Luis de Belmonte Bermúdez, collaborated comedy.

  7. Extractive sector politics in Latin America and their impact on poverty alleviation

    DEFF Research Database (Denmark)

    Pacheco Cueva, Vladimir

    and experiences of Mexico, Chile and Peru in regards to the nexus between non-renewable resource management and poverty alleviation. With that contextual background, the paper will present the most common developmental debates taking place in El Salvador, the province of Mendoza (Argentina) and the state of Baja...

  8. Mycobacterioses in dogs and cats from Buenos Aires, Argentina.

    Science.gov (United States)

    Barandiaran, Soledad; Martínez Vivot, Marcela; Falzoni, Elvira; Marfil, María J; Pérez Tort, Gabriela; Rovatti, Paula; Fernández, Mónica; Iachini, Ricardo; Satek, Fernanda; Duchene, Adriana; Zumárraga, Martín J

    2017-09-01

    Mycobacterioses can produce nonspecific clinical signs in dogs and cats that make diagnosis difficult. Furthermore, the full characterization of mycobacterial agents is not always possible or practical. We characterized mycobacteria detected through cytology in 12 dogs and 7 cats with generalized clinical signs from the province of Buenos Aires in Argentina. In dogs, molecular testing confirmed the presence of Mycobacterium avium subsp. hominissuis (MAH) in 8 cases and M. fortuitum in 1 case. All dogs were Miniature Schnauzers, suggesting that this breed may be more susceptible to M. avium than other dog breeds. The cat isolates were 2 M. bovis, 1 M. fortuitum, and 1 MAH. Mycobacterial interspersed repetitive unit-variable-number tandem repeat patterns suggested possible links with cattle, swine, and humans studied previously in Argentina. The results show that pets may act as susceptible hosts with the potential risk of transmitting the infection to humans and other animals.

  9. International Uranium Resources Evaluation Project (IUREP) national favourability studies: Argentina

    International Nuclear Information System (INIS)

    1977-08-01

    Argentina is a predominantly lowland area of 2,789,240 square kilometers. The capital is Buenos Aires. The entire length of Argentina is bordered on the west by the Andes Mountains. Tile Northwest Andes-Piedmont region consists of deep valleys containing salt basins and volcanoes, and is an earthquake zone. Patagonia, in the south, is essentially an arid region of windy plateaus and valleys. The southern Andes are narrower and lower than the northern Andes and in the extreme south contain glaciers and ice fields. The east-central plain (Pampa) of Argentina has dry and humid sectors and contains most of the population. The largest rivers are chiefly in the northeast, many having only seasonal flow. There has been extensive surface and subsurface exploration for uranium in Argentina for over 20 years. Although most of the work has been performed by the CNEA, advisors from the U.S. and from the IAEA have also taken part. Private industry has been involved, but apparently only on a small scale. In the OECD report of 1970, it was stated that 400,000 square kilometers of Argentina appear very favorable for uranium while an additional 900,000 square kilometers offer fair possibilities. Uranium exploration to date suggests that sandstones of Permian and Cretaceous ages exposed in Western Argentina in the Cordillera are very promising for discovery of new deposits. Past CNEA estimates have indicated that there is considerable hope for new discoveries in those areas where reserves are now known. In addition to the known uraniferous provinces which are indeed favorable for further exploration, there are several other large areas that warrant attention. There are, for example, in the Santa Cruz area of about 15,500 square kilometers Cretaceous and Tertiary sediments with favorable facies for uranium deposition. In the Patagonia Cordillera, Jurassic, Cretaceous, and Tertiary sediments are of interest for prospecting, These rocks contain carbonaceous material and have been

  10. PRELIMINARY GEOID MODEL IN SAN JUAN PROVINCE: A CASE STUDY IN THE ANDES

    DEFF Research Database (Denmark)

    Tocho, Claudia; Miranda, Silvia; Pacino, Maria Cristina

    2008-01-01

    A high-resolution and high-precision detailed gravimetric geoid has been computed for San Juan province in Argentina, ranging from 27 degrees S to 34 degrees S in latitude and 72 degrees W to 65 degrees W in longitude. The gravimetric geoid was calculated using the RTM method, a multiband spheric...

  11. 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

  12. 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

  13. El tratamiento informativo de las elecciones 2015 en la Argentina

    Directory of Open Access Journals (Sweden)

    Esteban Andrés Zunino

    2018-01-01

    Full Text Available [es] El objetivo general de este trabajo consiste en analizar el tratamiento mediático de los diarios nacionales, Clarín y La Nación, y los de la Provincia de Mendoza, Los Andes y UNO, sobre las elecciones presidenciales de 2015 en la Argentina. Para ello, se sometieron a análisis de contenido las piezas periodísticas referidas al caso publicadas por los cuatro diarios entre el 27 de septiembre y el 22 de noviembre de 2015. Es decir, desde un mes antes de la primera vuelta y hasta el mismo día de la segunda. En términos específicos se pretende establecer: 1 cuál fue la relevancia del asunto en las coberturas; y 2 cuál fue el tono valorativo del tratamiento mediático. En este trabajo, que se sustenta conceptualmente en la Teoría de la Agenda Setting y en la Teoría de la Valoración, se utilizó un índice de importancia, para medir la relevancia de las piezas informativas, y un índice de valoración, para estimar la valencia de las notas. [en] The overall objective of this paper is to analyze the media treatment of the 2015 presidential elections in Argentina made by national newspapers Clarin and La Nación and local newspapers Los Andes and UNO. According to the main objective, it was developed a content analysis of all published news between September 27 and November 22, 2015.That is, a month before the first round and until the day second. In specific terms it wishes to establish: 1 what was the relevance of the issue; and 2 what it was the valence of media coverage. In this work, which is based conceptually on Agenda Setting and Appraisal, an index of importance was used to measure the relevance of news items, and an assessment index was implemented to estimate the valence.

  14. Redescripción y consideraciones biogeográficas de dos especies de Scotobius (Coleoptera: Tenebrionidae de ambientes montanos del centro de Argentina y Chile

    Directory of Open Access Journals (Sweden)

    Violeta A. SILVESTRO

    2012-01-01

    Full Text Available El género neotropical Scotobius Germar (Tenebrioninae: Scotobiini comprende 61 especies distribuidas desde el centro de Perú y sur de Brasil hasta el sur de Argentina y Chile. En este trabajo, revisamos dos especies de Scotobius que habitan el oeste de las provincias de San Juan, Mendoza y Neuquén (Argentina y en Chile central, a lo largo de la Cordillera de los Andes y las montañas extra-andinas en Argentina: S. punctatus Eschscholtz, 1831 y S. andrassyi Kaszab, 1969. Se proveen redescripciones utilizando nuevos caracteres morfológicos y se proporcionan fotografías de los adultos y de los pronotos. Se consigna la distribución geográfica, rangos altitudinales y las provincias biogeográficas en las que habitan estas especies. Se utiliza un modelo predictivo de distribución de especies para proponer hipótesis sobre los factores que influencian la distribución espacial y que explicarían la alopatría de ambas especies.

  15. Natural occurrence of entomophthoroid fungi of aphid pests on Medicago sativa L. in Argentina

    Directory of Open Access Journals (Sweden)

    Romina G Manfrino

    Full Text Available Four species of entomophthoroid fungi, Pandora neoaphidis (Entomophthorales: Entomophthoraceae, Zoophthora radicans (Entomophthorales: Entomophthoraceae, Entomophthora planchoniana (Entomophthorales: Entomophthoraceae and Neozygites fresenii (Neozygitales: Neozygitaceae were found to infect Aphis craccivora, Therioaphis trifolii, and Acyrthosiphon pisum and unidentified species of Acyrthosiphon on lucerne in Argentina. Samples were collected from five sites (Ceres, Rafaela, Sarmiento, Monte Vera and Bernardo de Irigoyen in the province of Santa Fe. In this study, Zoophthora radicans was the most important pathogen and was recorded mainly on Acyrthosiphon sp. Zoophthora radicans was successfully isolated and maintained in pure cultures. This study is the first report of entomophthoroid fungi infecting lucerne (Medicago sativa L. aphids in Argentina.

  16. Thubunaea eleodori sp. nov. (Nematoda: Physalopteridae) from Liolaemus eleodori (Sauria: Liolaemidae) from Argentina.

    Science.gov (United States)

    Ramallo, Geraldine; Goldberg, Stephen; Bursey, Charles; Castillo, Gabriel; Acosta, Juan Carlos

    2017-01-01

    Thubunaea eleodori sp. nov. is described from the stomach of Liolaemus eleodori (Sauria: Liolaemidae) from San Guillermo National Park, Province of San Juan, Argentina. T. eleodori is most similar to those species lacking spicules, T. cnemidophorus, T. fitsimonsi, T. parkeri, T. schukurovi, and T. smogorzhewskii. T. eleodori is separated from these species based on the papilla pattern. T. eleodori has 12 pedunculate papillae and 14 sessile papillae, T. smogorzhewskii lacks pedunculate papillae, T. fitsimonsi and T. parkeri lack sessile papillae, and T. cnemidophorus has14-16 pedunculate papillae and 12 sessile papillae. T. eleodori represents the first member of the genus to be reported from Argentina.

  17. 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.

  18. 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)

  19. Mystic esoteric tourism in Uritorco Zone (Cordoba, Argentina: ethnographical approach

    Directory of Open Access Journals (Sweden)

    Alejandro Otamendi

    2008-05-01

    Full Text Available This article aims to synthesize the social construction and changes held in symbolic representations of Capilla del Monte dwellers, during the last two decades at that tourist area in Cordoba Province, Argentina. It will also describe from an ethnographic perspective how esoteric tourists, newcomers from the last migration waves and local authorities collaborated in its own way for the Uritorco Zone development, at the Uritorco Hill, where a peculiar mystic-esoteric discourse has been born combined with narratives of supernatural, ethnic, natural and extra terrestrial issues.

  20. La capacitación como estrategia para el mejoramiento de las oportunidades de sobrevivencia de las mujeres. Un estudio de caso en Mendoza, Argentina

    Directory of Open Access Journals (Sweden)

    Mercedes Molina

    2011-01-01

    Full Text Available El presente artículo se propone contribuir a dilucidar en qué medida se han modificado las condiciones de vida de las poblaciones escolarizadas, luego de haber completado el nivel medio. Es decir, dado que la falta de capacitación ¿que inicialmente, y desde la discursividad oficial dominante, era considerada la causa por la cual estas poblaciones de mujeres sólo podían acceder a puestos de trabajo altamente precarizados¿ se ha revertido, se busca conocer si en el presente, esas personas se insertan en el mercado laboral en posiciones que les hayan permitido superar la antigua condición de pobreza.

  1. Los contenidos procedimentales en el proceso de enseñanza-aprendizaje (el caso de una escuela en Mendoza República de Argentina)

    OpenAIRE

    Zúñiga Meléndez, Adriana

    2013-01-01

    Los objetivos generales de la investigación en un primer momento son indagar y analizar la importancia que le otorgan y la forma en que los docentes abordan a los contenidos procedimentales, desde sus planificaciones y prácticas de aula y en una segunda etapa, realizar intervenciones en el aula que favorezcan el aprendizaje de los contenidos procedimentales como elementos fundamentales para la adquisición de la competencia científica.Esta investigación responde a un estudio de tipo descript...

  2. LA DIMENSIÓN HISTÓRICA VERSUS LA BANALIZACIÓN DEL PAISAJE. EL CASO DEL PAISAJE RURAL DEL DEPARTAMENTO DE MAIPÚ, MENDOZA, ARGENTINA

    Directory of Open Access Journals (Sweden)

    Lorena Manzini Marchesi

    2015-01-01

    Full Text Available El paisaje rural del departamento de Maipú se caracteriza por una heterogeneidad integradora y un dinamismo activo, propio de la actividad productiva agrícola. e ste posee elementos que clarifican su carácter, pero otros que contribuyen a su banalización. En este marco, el presente artículo plantea la reflexión sobre cuál es el límite que existe entre los nuevos elementos en los paisajes rurales producto del proceso evolutivo de adaptación a los cambios económicos, técnicos y sociales de la época y la banalización del paisaje; y también, cómo poder detectar los elementos que están transformando el carácter del paisaje al punto de la banalización en un marco paisajístico dinámico y de heterogeneidad. Ante ello, se sostiene como hipótesis que la dimensión histórica del paisaje permite detectar y enfrentar a la banalización del mismo, ya que la relación conceptual dimensión histórica versus banalización del paisaje puede ser empleada como una herramienta para su análisis.

  3. Los contenidos procedimentales en el proceso de ense??anza-aprendizaje (el caso de una escuela en Mendoza Rep??blica de Argentina)

    OpenAIRE

    Z????iga Mel??ndez, Adriana

    2012-01-01

    Los objetivos generales de la investigaci??n en un primer momento son indagar y analizar la importancia que le otorgan y la forma en que los docentes abordan a los contenidos procedimentales, desde sus planificaciones y pr??cticas de aula y en una segunda etapa, realizar intervenciones en el aula que favorezcan el aprendizaje de los contenidos procedimentales como elementos fundamentales para la adquisici??n de la competencia cient??fica. Esta investigaci??n responde a un estudio de tip...

  4. Geochemical constraints on the relationship between the Miocene-Pliocene volcanism and tectonics in the Palaoco and Fortunoso volcanic fields, Mendoza Region, Argentina

    DEFF Research Database (Denmark)

    Dyhr, Charlotte Thorup; Holm, Paul Martin; Llambias, Eduardo J.

    2013-01-01

    New 40Ar/39Ar analyses constrain the formation of the volcanic succession of Sierra de Palaoco in the present back-arc of the Andean Southern Volcanic Zone (SVZ), near 36°S, to the Late Miocene and assigns them to the Huincán II Formation. The composition of major and trace elements, Sr, Nd and P...

  5. An ephemeral project on private regulation of viticulture in Mendoza (Argentina in a crisis context: Mendoza’s Viticulture Society, 1916-1919

    Directory of Open Access Journals (Sweden)

    Patricia Elena Barrio

    2015-01-01

    Full Text Available In early 1917, a company that gathered all of Mendoza’s wine producers was founded. This was the last anti-cyclical strategy promoted by the State with the goal of dealing with a long lasting economical crisis. It aimed to set wine and grape prices in a monopolistic fashion, and to establish wine marketing quotas. The limited amount of bibliography on this topic is what motivated this study, based on 3 aspects: how it was created, who it benefitted and how it was dissolved. Lack of official documentation forced its story to be rebuilt with information gathered from newspapers and public and private memoirs. It was concluded that the ideas this experiment was based on were misguided, since wine is a dispensable and replaceable asset. It was also concluded that it benefitted wine growers and that its dissolution process was longer and more complex than it foreseen.

  6. 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)

  7. Xenarthra (Mammalia) from a new late Neogene fossiliferous locality in Northwestern Argentina

    Science.gov (United States)

    Zurita, Alfredo E.; Camacho, María; Miño-Boilini, Angel R.; Candela, Adriana M.; Cuadrelli, Francisco; Krmpotic, Cecilia M.; Solís, Natalia

    2017-12-01

    Northwestern Argentina contains one of the most complete continental late Neogene (ca. 9-2.58 Ma) fossiliferous sequences in South America, especially in the current territories of the Catamarca, Tucumán and Jujuy provinces. More precisely in Jujuy Province several localities bearing mainly fossil mammals have been reported at the Quebrada de Humahuaca in the Uquía, Maimará and Tilcara formations, in which the clade Xenarthra (Mammalia) is well-represented. In this scenario, the fossiliferous potential of other localities of Jujuy Province are less known, especially in those areas located at the northwest end of Argentina, bordering Bolivia in the Northern Puna. A new late Neogene fossiliferous locality near Calahoyo (3639 m.a.s.l), Jujuy Province, is here reported. The materials, belonging to Xenarthra, were exhumed from the base of the Tafna Formation which was deposited in a sedimentary basin by alluvial and/or fluvial currents, undergoing transitions of various lacustrine episodes. The taxa include the Tardigrada Pyramiodontherium bergi (Megatheriidae) and the Cingulata Eosclerocalyptus sp. (Glyptodontidae) and Macrochorobates chapalmalensis (Dasypodidae). From a biostratigraphic viewpoint, this assemblage suggests a Late Miocene-Pliocene age for the base of the Tafna Formation, and partially contradicts the supposed Plio-Pleistocene age of this unit. Finally, the new specimens here described indicate that Xenarthra were taxonomically and ecologically diverse during the late Neogene in the northwest end of Argentina, since they are represented by at least three main lineages (sloths, glyptodontids and armadillos).

  8. Economic evaluation of a 100% smoke-free law on the hospitality industry in an Argentinean province.

    Science.gov (United States)

    Candioti, Carlos; Rossini, Gustavo; Depetris de Guiguet, Edith; Costa, Oscar; Schoj, Verónica

    2012-06-01

    To assess the economic impact of a 100% smoke-free law on bars and restaurants in an Argentinean province. We conducted a time series analysis of restaurant and bar revenues in the province of Santa Fe 31 months before and 29 months after the implementation of the 100% smoke-free environment law. The neighboring province of Entre Rios without smoking restrictions at the time of this study, was used as the control province. Average taxable revenues post-legislation in the province of Santa Fe as a whole and in the two most important cities were higher when compared to the total provincial revenue pre-legislation. No significant differences were observed with the total revenue from the province of Entre Rios. We found no statistically significant evidence that the 100% smoke-free environment legislation in the province of Santa Fe, Argentina, had a negative impact on the revenues of local bars and restaurants.

  9. La educación agrícola en la economía regional: El aporte de la Escuela Nacional de Vitivinicultura a la consolidación de la industria vitivinícola argentina (1900-1920

    Directory of Open Access Journals (Sweden)

    Florencia Rodríguez Vázquez

    2011-12-01

    Full Text Available La generación y difusión de conocimientos técnicos útiles a las economías regionales de base agroindustrial sólo en los últimos años ha sido abordada por la historiografía argentina. En particular, en el presente artículo ofreceremos un panorama de los proyectos políticos educativos de orientación productiva generados en Mendoza y San Juan a partir de su inserción en una economía vitivinícola moderna, de base capitalista, y los resultados de estos proyectos. Para esto último, nos detendremos en la reconstrucción de las trayectorias profesionales de algunos enólogos y agrónomos graduados de estos establecimientos.The generation and difussion of technical knowledge useful to the agroindustrial regional economies only in recent years has been studied by historiography in Argentina. In particular, this article offers an overview of the political projects, with a productive educational profile, generated in Mendoza and San Juan from its insertion into a modern wine economy of capitalist basis, and the results of these projects. For this, we stop at the reconstruction of the careers of some winemakers and agronomists graduates of these establishments.

  10. 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

  11. 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.

  12. 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)

  13. 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.

  14. Paradiplomacia en las relaciones Chileno-Argentinas : la integración desde Coquimbo y San Juan

    NARCIS (Netherlands)

    Alvarez, M.

    2016-01-01

    The dissertation studies how non-central governments inserted themselves in the integration process between Argentina and Chile. As a case study, the link between the Argentinean province of San Juan and the Chilean region of Coquimbo was addressed through an extensive literature review and more

  15. ON THE PRESENCE OF PYRAMIODONTHERIUM (MAMMALIA, XENARTHRA, MEGATHERIIDAE IN THE LATE MIOCENE OF NORTHEASTERN ARGENTINA AND ITS BIOGEOGRAPHICAL IMPLICATIONS

    Directory of Open Access Journals (Sweden)

    DIEGO BRANDONI

    2009-03-01

    Full Text Available The biochron of the subfamily Megatheriinae, large to very large terrestrial sloths typified by Megatherium Cuvier, in Argentina extends from the middle Miocene of Patagonia to the late Pleistocene-early Holocene. Megatheriines reached their highest diversity in the lower levels (="conglomerado osífero", late Miocene of the Ituzaingó Formation in Entre Ríos Province, northeastern Argentina. Among the four megatheriines that occur in this unit, the genera Promegatherium Ameghino, Eomegatherium Kraglievich and Pliomegatherium Kraglievich represent relatively small to medium-sized taxa. Here we describe new material assigned to Pyramiodontherium, the largest of the four genera from the same bed and comparable in size to some Quaternary species of Megatherium. Three valid species of Pyramiodontherium have been recognized, all distributed mainly in northwestern Argentina, from the late Miocene in Catamarca Province (and probably also in Tucumán Province, and the late Pliocene in La Rioja Province. The presence of this genus in northeastern Argentina extends its known paleobiogeographical distribution. 

  16. Creating a typology of tobacco farms according to determinants of diversification in Valle de Lerma (Salta-Argentina)

    NARCIS (Netherlands)

    Chavez, M.D.; Berentsen, P.B.M.; Oude Lansink, A.G.J.M.

    2010-01-01

    The objective of this article is to identify typical tobacco farms according to determinants of diversification that can be used to explore possibilities of diversification in the province of Salta (Northwest of Argentina). National Agriculture Census data of 278 farms in the main tobacco production

  17. Mineralogical data on angelaite, Cu2AgPbBiS4, from the Los Manantiales District, Chubut, Argentina

    DEFF Research Database (Denmark)

    Topa, D.; Paar, W.H.; Putz, H.

    2010-01-01

    Angelaite, ideally Cu2AgPbBiS4, occurs as a hypogene mineral in polymetallic ores at the Ángela groups of veins in the mining district of Los Manantiales, in the province of Chubut, Argentina. The new mineral species is predominantly associated with pyrite, sphalerite, chalcopyrite, hematite...

  18. Climate and sea-level changes across a shallow marine Cretaceous–Palaeogene boundary succession in Patagonia, Argentina

    NARCIS (Netherlands)

    Vellekoop, Johan; Holwerda, Femke; Prámparo, Mercedes B.; Willmott, Veronica; Schouten, Stefan; Cúneo, Nestor R.; Scasso, Roberto A.; Brinkhuis, Henk

    2017-01-01

    Upper Maastrichtian to lower Paleocene, coarse-grained deposits of the Lefipán Formation in Chubut Province, (Patagonia, Argentina) provide an opportunity to study environmental changes across the Cretaceous–Palaeogene (K–Pg) boundary in a shallow marine depositional environment. Marine

  19. Rickettsia parkeri Rickettsiosis in Different Ecological Regions of Argentina and Its Association with Amblyomma tigrinum as a Potential Vector

    Science.gov (United States)

    Romer, Yamila; Nava, Santiago; Govedic, Francisco; Cicuttin, Gabriel; Denison, Amy M.; Singleton, Joseph; Kelly, Aubree J.; Kato, Cecilia Y.; Paddock, Christopher D.

    2014-01-01

    Rickettsia parkeri, a newly recognized tick-borne pathogen of humans in the Americas, is a confirmed cause of spotted fever group rickettsiosis in Argentina. Until recently, almost all cases of R. parkeri rickettsiosis in Argentina have originated from the Paraná River Delta, where entomological surveys have identified populations of R. parkeri-infected Amblyomma triste ticks. In this report, we describe confirmed cases of R. parkeri rickettsiosis from Córdoba and La Rioja provinces, which are located several hundred kilometers inland, and in a more arid ecological region, where A. triste ticks do not occur. Additionally, we identified questing A. tigrinum ticks naturally infected with R. parkeri in Córdoba province. These data provide evidence that another human-biting tick species serves as a potential vector of R. parkeri in Argentina and possibly, other countries of South America. PMID:25349376

  20. Building a Species Conservation Strategy for the brown howler monkey (Alouatta guariba clamitans) in Argentina in the context of yellow fever outbreaks

    OpenAIRE

    Agostini, Ilaria; Holzmann, Ingrid; Di Bitetti, Mario Santiago; Oklander, Luciana Inés; Kowalewski, Martín M.; Beldomenico, Pablo Martín; Goenaga, Silvina; Martinez, Mariela; Moreno, Eduardo S.; Lestani, Eduardo; Desbiez, Arnaud L.J.; Miller, Philip

    2017-01-01

    The brown howler monkey (Alouatta guariba clamitans) is endemic to South America’s Atlantic Forest, with a small population extending into the northern portion of Misiones province in northeastern Argentina. In 2012, the species was classified as Critically Endangered in Argentina due to its highly restricted distribution, low population density and dramatic declines from recent Yellow Fever outbreaks. In March 2013, we organized an international workshop in Misiones to evaluate population st...

  1. Panorama de la familia Asteraceae (= Compositae en la Republica Argentina An overview of the plant family Asteraceae ( = Compositae in Argentina

    Directory of Open Access Journals (Sweden)

    Liliana Katinas

    2007-07-01

    Full Text Available Se presenta un panorama de la familia Asteraceae en la República Argentina , que incluye una breve historia taxonómica, datos numéricos de tribus, géneros y especies, ejemplos de endemismos y daptaciones ecológicas y una reseña sobre la hipótesis del origen de la familia en Patagonia. En la Argentina, las asteráceas representan la familia más numerosa con 227 géneros (cinco son endémicos y ca. 1400 especies (92 son adventicias y 382 son endémicas. En términos de taxones nativos, se hallan representadas en nuestro país todas las tribus de Asteraceae excepto Inuleae (sensu Bremer. Las tribus Arctoteae y Calenduleae están representadas por taxones adventicios exclusivamente y Cardueae posee sólo una especie nativa. Barnadesieae y Mutisieae son las únicas tribus con géneros endémicos de Argentina y también presentan el porcentaje más alto de géneros y especies en el país en comparación con el resto de las tribus. El mayor número de especies nativas, endémicas y no endémicas, se da en las provincias fitogeográficas Altoandina y Patagónica. La tribu más representada en número de géneros es Heliantheae, y en número de especies nativas es Senecioneae.An overview of the family Asteraceae in Argentina that includes a brief taxonomic history, numerical data of tribes, genera and species, examples of endemisms and ecological adaptations, and a discussion on the hypothesis on the origin of the family in Patagonia is given. Asteraceae is the most numerous family in Argentina , with 227 genera (five are endemic and ca. 1400 species (92 are adventitious and 382 are endemic. In relation to the native taxa, all tribes of Asteraceae occur in Argentina excepting Inuleae (sensu Bremer. Tribes Arctoteae and Calenduleae are represented exclusively by adventitious taxa, and Cardueae has only one native species. Barnadesieae and Mutisieae are the only tribes with endemic genera in Argentina and they also present the highest percentage of

  2. Análisis del stock del capital humano para los grandes aglomerados de la Argentina

    Directory of Open Access Journals (Sweden)

    Gabriel Amós Fridrij

    2008-02-01

    Full Text Available El objetivo del presente trabajo es describir el cambio en el stock de capital humano, entre los años 1995 y 2006, medido por los niveles de educación formal alcanzados por la población económicamente activa (PEA, para los grandes aglomerados de Rosario, Tucumán, Mendoza, Córdoba y GBA de la República Argentina y también para Salta. Luego comparar el desempeño relativo de la provincia de Tucumán con las mismas. También se analizan los ingresos de los diferentes niveles de capital humano acumulado por año y por provincia. Además se realizará el planteo teórico de un modelo econométrico con el objeto de explicar cuales son los factores que determinan las diferencias en la performance de cada provincia. Por último se presentan las conclusiones que surgen del análisis.

  3. The cycles of Argentine wine exports / Los ciclos de las exportaciones de vino argentinas

    Directory of Open Access Journals (Sweden)

    Cerdá Juan Manuel

    2016-01-01

    Full Text Available This paper analyses the different episodes that the Argentina wine industry transited between the years 1980 to 2012, within a context of globalization of the wine-grape industry. In particular, we study the significance that some winemakers had in the process and the effect of the exchange rate and recipients of Argentine wine in the expansion of exports in recent years. The hypothesis of this article is that, from the 80 s, the winemakers observed in exports as a solution to face their most important crisis. This required a transformation of the industry to produce quality wines that could be sold on the international market. Thus, winemakers added to a century-old winemaking tradition new practices and strategies. On the other hand, over 30 years, various macroeconomic policies affect the overall industry growth, especially in exports. On balance, in this paper we propose to show that the growth of exports of Argentine wine was a sinuous and different path to the literature has been found for the “new world” exporters countries. The data was obtained from Instituto Nancional de Vitivinícultura (INV, Bolsa de Comercio de Mendoza and International Organisation of Vine and Wine (OIV as well as interviews collected on primary and secondary sources.

  4. 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

  5. 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)

  6. 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.

  7. 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

  8. First record of Talaromyces udagawae in soil related to decomposing human remains in Argentina.

    Science.gov (United States)

    Tranchida, María C; Centeno, Néstor D; Stenglein, Sebastián A; Cabello, Marta N

    2016-01-01

    The morphologic features of Talaromyces udagawae Stolk and Samson are here described and illustrated. This teleomorphic Ascomycota fungus was isolated from soil obtained in Buenos Aires province (Argentina) from beneath a human cadaver in an advanced state of decomposition. After washing and serial dilution of the soil along with moist-chamber techniques for fungal cultivation, T. udagawae formed very restricted colonies of bright yellow color on different growth media with 8-ascospored asci. The ascospores were ellipsoidal and ornamented. The anamorphic state was not observed. Molecular-genetic techniques identified the species. The present record is the first of the species in Argentina, pointing it as a tool to identify soils where cadaver decomposition occurs. Copyright © 2015 Asociación Argentina de Microbiología. Publicado por Elsevier España, S.L.U. All rights reserved.

  9. Breakpoints in annual rainfall trends in Córdoba, Argentina

    Science.gov (United States)

    de la Casa, Antonio; Nasello, Olga

    2010-03-01

    Long-term rainfall variability in the Province of Córdoba, Argentina is studied. The methodology used was developed by Tomé and Miranda (2004), and the most notable breakpoints in the time series were determined in order to identify sudden transitions from one period to another with a different linear trend sign. All the rain gauges operated by the "Servicio Meteorológico Nacional" (SMN) of Argentina in Córdoba Province, in the period 1930-2006, were analyzed. One of the stations studied, Córdoba Observatorio, has reliable rainfall data since 1873. In this case, the 1925-2006 period and the 1873-2006 period were studied to analyze the influence of series length in terms of the piecewise linear trends produced. Analyzing only one breakpoint in all the series, a trend change is observed from negative to positive in the 1950s in the north area of the region, while in the other areas the opposite change occurs in the 1970s. The residual sum of squares obtained with the partial trend method is compared to that produced by the traditional method. This comparison shows how the multiple trend method enables regional changes to be determined for a given climatological variable.

  10. El Trabajo Social en la industrialización sustitutiva venezolana: en el caso de Empresas Mendoza

    Directory of Open Access Journals (Sweden)

    Edgar Valero Julio

    2017-01-01

    Full Text Available Este artículo analiza las prácticas de bienestar laboral en Empresas Mendoza (1926-1990 —el grupo industrial más importante en la etapa de industrialización sustitutiva venezolana— y la contribución del Trabajo Social a estructurar y profesionalizar el más avanzado sistema asistencial empresarial desde mediados del siglo XX. La autonomía y dinámica alcanzada por las exponentes de esta profesión, sumadas a la puesta en práctica de acciones determinadas por los valores paternalistas y rentísticos de los directivos y las directivas de esta empresa, permitió conformar en el campo empresarial un espacio idóneo para su actividad e hizo posible que se emprendiera un interesante proceso de autocrítica y replanteamiento del Trabajo Social en Venezuela durante los años setenta.

  11. Environmental changes on freshwater fish communities in South America in the last five decades: a case study in northeast Argentina.

    Directory of Open Access Journals (Sweden)

    Alejandra Volpedo

    2017-01-01

    Full Text Available Environmental changes together with other stressors, such as habitat destruction, may cause widespread extinctions, decrease in biodiversity and disrupt natural communities, resulting in novel species assemblages. South America has a large diversity of freshwater fishes with complex evolutionary histories, mainly due to the presence of a wide variety of aquatic environments. Argentina has experienced an increase in rainfall in the last five decades leading to important climatic and hydrological changes. These changes caused the displacement of the isohyets towards the west. This study reports changes in the composition of freshwater fishes in northeast Argentina during the last five decades, and investigated a causal relationship between the variation in fish assemblages and climate change. The changes in the distribution and composition of fish communities between 1962 and 2010 were analyzed in 22 stations. These stations were agrouped in relation to the ichthyogeographic provinces: Great Rivers province (GRp and Pampean province (Pp. The correlation between rainfall in relation to the number total species from each of the studied provinces showed a significant positive correlation in Pp and not correlation in GRp. The annual mean river discharge and the number of total species from each ecoregion showed a significant positive correlation in GRp, and not correlation in Pp. The results of this study strongly suggest that the rainfall variations and river discharges observed in northeast Argentina induced changes in the composition of fish assemblages that lead to the redistribution of fish species among ichthyogeographic provinces.

  12. Transferencia de Tecnologías a una Cooperativa en Argentina. Un Estudio de Caso

    Directory of Open Access Journals (Sweden)

    Maximiliano Facundo Vila Seoane

    2013-04-01

    Full Text Available This paper describes a pilot technology transfer process carried out in the province of Salta, northwestern Argentina, whose goal was to disseminate knowledge to produce solar cookers. The particularity of this experience is that the source of knowledge transfer has been made from a research and development center to a cooperative public work in the province. The paper describes in detail all the stages of the process, methods that have been used, and suggests a set of points to consider in future similar experiences.

  13. Anotrichium furcellatum (Ceramiaceae, Rhodophyta en Argentina: Una posible especie invasora Anotrichium furcellatum (Ceramiaceae, Rhodophyta in Argentina: A possible invasive species

    Directory of Open Access Journals (Sweden)

    Alicia L. Boraso de Zaixso

    2005-12-01

    Full Text Available Se reporta la presencia de al menos dos poblaciones de Anotrichium en la costa argentina (provincias de Buenos Aires, Chubut y Santa Cruz. Las poblaciones submareales observadas estaban caracterizadas por una mayoría de talos en estado vegetativo. Solo las poblaciones intermareales mostraron tetrasporofitos con esporangios. Las poblaciones se identificaron provisionalmente de acuerdo a la morfología del talo y de los tetrasporangios como Anotrichium furcellatum (J. Agardh Baldock. Las características de los talos de las poblaciones estudiadas son comparadas con las de las especies de Anotrichium que poseen igualmente pocos tetrasporangios por célula. Se reportan arribazones inusualmente abundantes de esta especie ocurridas en la costa bonaerense en el año 2000.At least two populations of Anotrichium are reported from the coast of Argentina (Buenos Aires, Chubut, and Santa Cruz provinces. These populations have a majority of vegetative thalli. According with their morphological and tetrasporangial characteristics the populations are provisionally assigned to Anotrichium furcellatum (J. Agardh Baldock. The characteristics of the thalli of studied populations are compared with the species of Anotrichium having also a low number of tetrasporangia per cell. Extraordinary high quantities of cast ashore thalli of this species is reported along the Buenos Aires province coast in the year 2000.

  14. Binema bonaerensis n. sp. (Oxyurida: Thelastomatidae) parasite of Neocurtilla claraziana Saussure (Orthoptera: Gryllotalpidae) in Argentina.

    Science.gov (United States)

    Camino, N B; Reboredo, G R

    1999-01-01

    The nematode Binema bonaerensis n. sp. (Oxyurida: Thelastomatidae) is described from the intestine of the mole cricket of Neocurtilla claraziana Saussure (Orthoptera: Gryllotalpidae) from Buenos Aires Province, Argentina. It is distinguished mainly by having a conical tail; three sclerotized arches in the buccal cavity; an excretory pore immediately posterior to the base of the esophagus and the presence of five pairs of male genital papillae with one pair preanal and four pairs postanal.

  15. Searching pristine source of two gabbric plutons outcroping in Central Sierras Pampeanas Range, Argentina

    International Nuclear Information System (INIS)

    Daziano, C.; Ayala, R.

    2010-01-01

    This work is about the study of two gabbric plutons outcrop ing throughout Central Sierras Pampeanas range (Cordoba province, Argentina). San Lorenzo hill gabbric plutons is in the Upper proterozoic age whereas Cañada del Puerto belongs to the Early proterozoic.They are stock-type igneous bodies and they are intrusive s in an Upper Precambrian crystalline basement; it is mainly composed by gneisses, migmatites, schistes, marbles, amphibolite s, tact's, serpentinites and related rocks

  16. Contracaecumovale (Nematoda: Anisakidae) from Rollandia rolland Quoy & Gaimard 1824 (Aves, Podicipedidae) in Argentina.

    Science.gov (United States)

    Galeano, Noelia Adelina; Tanzola, Ruben Daniel

    2012-01-01

    Necropsy on 15 specimens of white-tufted grebe, Rollandiarolland, caught in the Mar Chiquita and Chascomús lagoons (Buenos Aires province), revealed the presence of Contracaecumovale (Linstow, 1907). This nematode shows a marked specificity for podicipediform birds. The specimens were identified from morphological study on features such as cephalic and esophageal structures and caudal papillae, using both optical and scanning electron microscopy. This is the first record of C. ovale parasitizing R. rolland in Argentina.

  17. 96/5000 Other literature Bureaucratic records and traces of disappearances in Argentina

    OpenAIRE

    Emilio Crenzel

    2014-01-01

    In this article I examine a series of bureaucratic records produced during the military dictatorship by workers in two state agencies, a morgue and a public hospital, located in two different provinces of Argentina, Córdoba and Buenos Aires. In these public documents, these workers left evidence, for several and different reasons, on the existence of practices that integrated phases or moments of the system of forced disappearance of persons, a crime which distinguished the last military dict...

  18. Exploration for uranium in Argentina: New policies of reactivation

    International Nuclear Information System (INIS)

    Bianchi, R.E.

    2009-01-01

    Full text: The policy established by the National Government of Argentina in August 2006 related to resuming the Nuclear activity in the country, lead the CNEA trough the Exploration of Raw Materials Manager (ERMM) to establish working strategies for the next 10 years. These strategies together with the assignment of an adequate budget will contribute to define new uranium resources, which together with the already known ones, will be used to supply the requirements of Nuclear Power and Research Plants in the future. Thus, the ERMM is applying a policy of human resources hiring new personnel in order to count with the minimum necessary workforce to reach these tasks. In Argentina known U resources are related to sedimentary, igneous and metamorphic environments. Considering the geology of the different regions, Argentina has been divided into 57 units in which the geological, geochemical, mineralogical and structural information is evaluated in order to estimate the uranium geological favor