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Sample records for aires argentina association

  1. Molecular identification of protozoa causing AIDS-associated cholangiopathy in Buenos Aires, Argentina.

    Science.gov (United States)

    Nétor Velásquez, Jorge; Marta, Edgardo; Alicia di Risio, Cecilia; Etchart, Cristina; Gancedo, Elisa; Victor Chertcoff, Agustín; Bruno Malandrini, Jorge; Germán Astudillo, Osvaldo; Carnevale, Silvana

    2012-12-01

    Several species of microsporidia and coccidia are protozoa parasites responsible for cholan-giopathy disease in patients infected with human immunodeficiency virus (HIV). The goals of this work were to identift opportunistic protozoa by molecular methods and describe the clinical manifestations at the gastrointestinal tract and the biliary system in patients with AIDS-associated cholangiopathy from Buenos Aires, Argentina. This study included 11 adult HIV-infected individuals with diagnosis ofAIDS- associated cholangiopathy. An upper gastrointestinal endoscopy with biopsy specimen collection and a stool analysis for parasites were performed on each patient. The ultrasound analysis revealed bile ducts compromise. An endoscopic retrograde cholangiopancreatography and a magnetic resonance cholangiography were carried out. The identification to the species level was performed on biopsy specimens by molecular methods. Microorganisms were identified in 10 cases. The diagnosis in patients with sclerosing cholangitis was cryptosporidiosis in 3 cases, cystoisosporosis in 1 and microsporidiosis in 1. In patients with sclerosing cholangitis and papillary stenosis the diagnosis was microsporidiosis in 2 cases, cryptosporidiosis in 2 and cryptosporidiosis associated with microsporidiosis in 1. In 3 cases with cryptosporidiosis the species was Cryptosporidium hominis, 1 of them was associated with Enterocytozoon bieneusi, and the other 2 were coinfected with Cryptosporidium parvum. In the 4 cases with microsporidiosis the species was Enterocytozoon bieneusi. These results suggest that molecular methods may be useful tools to identify emerging protozoa in patients with AIDS-associated cholangiopathy.

  2. Reading for All; Proceedings of the IRA (International Reading Association) World Congress on Reading (4th, Buenos Aires, Argentina, August 3-5, 1972).

    Science.gov (United States)

    Karlin, Robert, Ed.

    This book contains papers presented at the Fourth International Reading Association World Congress on Reading in Buenos Aires, Argentina, in August 1972. The contents of the book are divided into three parts: "Literacy and Literature" includes papers on libraries, books, and reading by Jorge Borges, the future of reading by Theodore Harris, the…

  3. [Recurrent wheezing: prevalence and associated factors in infants from Buenos Aires City, Argentina].

    Science.gov (United States)

    Szulman, Gabriela Aída; Freilij, Héctor; Behrends, Ilse; Gentile, Ángela; Mallol, Javier

    The episodes of bronchial obstruction at early age constitute a frequent problem in Pediatrics. The aim of this study was to evaluate the prevalence of recurrent wheezing in infants in Buenos Aires City, as well as to identify any associated factors. Cross-sectional study performed from 2011 to 2012 in the Children Hospital Ricardo Gutiérrez, Buenos Aires City, as part of the International Study of Wheezing in Infants. A validated questionnaire was applied to parents of infants aged between 12 and 15 months. The prevalence of wheezing, mostly the recurrent episodes (three or more), and their probable associated factors were evaluated. Data were statistically analyzed with χ 2 , Fisher's test, binary and logistics multiple regression analysis. The significance level was 0.05. Over 1063 infants, 58.9% (confidence interval (CI) 95% 55.9-61.9) presented at least one episode of wheezing and 26.3% (CI95% 23.8-29.9) three or more episodes (recurrent wheezing). Risk factors associated to wheezing were male gender (p=0.001), six or more episodes of cold during the first year of life (p Infantil de México Federico Gómez. Publicado por Masson Doyma México S.A. All rights reserved.

  4. Parque Mujeres Argentinas: Buenos Aires, Argentina

    OpenAIRE

    Vila,Marcelo; Sebastián,Adrián; Vila,Javier

    2010-01-01

    Se plantea la creación de este parque como una operación paisajística sobre Buenos Aires, en una zona de reciente rehabilitación. Por su escala y localización se transforma en el parque que vincula y amarra la ciudad con el río, generando espacios de encuentro masivo y zonas de contención.

  5. 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.

  6. 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

  7. Dengue Virus 1 Outbreak in Buenos Aires, Argentina, 2016.

    Science.gov (United States)

    Tittarelli, Estefanía; Lusso, Silvina B; Goya, Stephanie; Rojo, Gabriel L; Natale, Mónica I; Viegas, Mariana; Mistchenko, Alicia S; Valinotto, Laura E

    2017-10-01

    The largest outbreak of dengue in Buenos Aires, Argentina, occurred during 2016. Phylogenetic, phylodynamic, and phylogeographic analyses of 82 samples from dengue patients revealed co-circulation of 2 genotype V dengue virus lineages, suggesting that this virus has become endemic to the Buenos Aires metropolitan area.

  8. Elemental characterization of air particulate matter in Buenos Aires, Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Jasan, Raquel C.; Pla, Rita R.; Invernizzi, Rodrigo [Comision Nacional de Energia Atomica, Buenos Aires (Argentina). Centro Atomico Ezeiza. Grupo Tecnicas Analiticas Nucleares], E-mail: jasan@cae.cnea.gov.ar, E-mail: rpla@cae.cnea.gov.ar; Santos, Marina dos [Comision Nacional de Energia Atomica, Buenos Aires (Argentina). Centro Atomico Constituyentes. Lab. de Contaminacion del Aire], E-mail: mdossant@cnea.gov.ar

    2007-07-01

    Buenos Aires, the capital city of Argentina, is surrounded by 24 neighboring districts forming the so-called Buenos Aires metropolitan area (AMBA) that holds a population of 14 million people. In this work, the atmospheric aerosol of this metropolitan area was characterized through the determination of mass concentration, black carbon and elemental concentrations, on PM10 and PM2.5 samples taken using a 'Gent' sampler. The sampling site was located at an urban area characterized by fast and heavy traffic and samples were collected each third day, along 24 hours, between October 2005 and February 2006. A number of elements (As, Ba, Br, Ce, Co, Cr, Cs, Eu, Fe, Hf, La, Na, Rb, Sb, Sc, Se, Sm, Th, Yb and Zn) were determined by Neutron Activation Analysis and their results, as well as those of gravimetric mass concentrations, were compared with historical data. Enrichment factors were calculated for both fractions, using Sc as reference element and Mason's crustal concentration values, showing enrichment for As, Br, Sb, Se and Zn. Although the number of analyzed filters is still small, a preliminary factor analysis was run on both fraction results and different source profiles were found. The attribution of the sources to soil, high temperature processes including refuse incineration, fuel combustion and others, metal processes, traffic and other anthropogenic ones is discussed. (author)

  9. Elemental characterization of air particulate matter in Buenos Aires, Argentina

    International Nuclear Information System (INIS)

    Jasan, Raquel C.; Pla, Rita R.; Invernizzi, Rodrigo; Santos, Marina dos

    2007-01-01

    Buenos Aires, the capital city of Argentina, is surrounded by 24 neighboring districts forming the so-called Buenos Aires metropolitan area (AMBA) that holds a population of 14 million people. In this work, the atmospheric aerosol of this metropolitan area was characterized through the determination of mass concentration, black carbon and elemental concentrations, on PM10 and PM2.5 samples taken using a 'Gent' sampler. The sampling site was located at an urban area characterized by fast and heavy traffic and samples were collected each third day, along 24 hours, between October 2005 and February 2006. A number of elements (As, Ba, Br, Ce, Co, Cr, Cs, Eu, Fe, Hf, La, Na, Rb, Sb, Sc, Se, Sm, Th, Yb and Zn) were determined by Neutron Activation Analysis and their results, as well as those of gravimetric mass concentrations, were compared with historical data. Enrichment factors were calculated for both fractions, using Sc as reference element and Mason's crustal concentration values, showing enrichment for As, Br, Sb, Se and Zn. Although the number of analyzed filters is still small, a preliminary factor analysis was run on both fraction results and different source profiles were found. The attribution of the sources to soil, high temperature processes including refuse incineration, fuel combustion and others, metal processes, traffic and other anthropogenic ones is discussed. (author)

  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. 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.

  12. Vivienda unifamiliar, en Buenos Aires (Argentina

    Directory of Open Access Journals (Sweden)

    Bonomi, Jorge L. A.

    1968-04-01

    Full Text Available This single family house is situated on the Monte Grande plains, near Buenos Aires. Traditional materials were employed: brick, timber and ceramic special elements, but their use was consistent with a modem design. For the aesthetic composition, both indoors and out of doors, the architect has made careful use of the «plastic forms» provided by the roof and the colour.En la construcción de esta vivienda unifamiliar, situada en las llanuras de Monte Grande, cerca de Buenos Aires, fueron empleados materiales tradicionales: ladrillo, madera, y elementos cerámicos, pero dispuestos de tal forma que se adaptan adecuadamente a las técnicas modernas. Para la composición estética, tanto de interiores como de exteriores, el arquitecto ha jugado acertadamente con las «formas plásticas» de la cubierta, y el color.

  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. 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...

  15. Asociaciones áfido-parasitoide (Hemiptera: Aphididae; Hymenoptera: Braconidae, Aphidiinae en cultivos hortícolas orgánicos en Los Cardales, Buenos Aires, Argentina Aphid-parasitoid associations (Hemiptera: Aphididae; Hymenoptera: Braconidae, Aphidiinae on organic vegetable crops in Los Cardales, Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Andrea V. Andorno

    2007-07-01

    Full Text Available Diez especies de áfidos (Hemiptera: Aphididae se hallaron parasitados por siete especies de parasitoides (Hymenoptera: Braconidae, Aphidiinae en cultivos hortícolas orgánicos. Myzus persicae (Sulzer fue el áfido más frecuentemente encontrado sobre una amplia variedad de cultivos, y con mayor diversidad de parasitoides asociados. Aphidius colemani Viereck fue el afidiino más usual, que ataca varias especies de áfidos. Ocho asociaciones tritróficas, involucrando Aphidius matricariae Haliday, han sido registradas por primera vez para la Argentina.Ten aphid species (Hemiptera: Aphididae were found parasitized by seven aphid parasitoid species (Hymenoptera: Braconidae, Aphidiinae on organic vegetable crops. Myzus persicae (Sulzer was the most frequent aphid found on a wide variety of crops, with the largest parasitoid diversity associated. Aphidius colemani Viereck was the most frequent aphidiine attacking several species of aphids. Eight tritrophic associations involving Aphidius matricariae Haliday are reported for the first time for Argentina.

  16. 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.

  17. 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

  18. Opening Address (by A.M. Bomben) [IRPA12: 12. Congress of the International Radiation Protection Association: Strengthening Radiation Protection Worldwide - Highlights, Global Perspective and Future Trends, Buenos Aires, Argentina, 19-24 October 2008

    International Nuclear Information System (INIS)

    Bomben, A.M.

    2010-01-01

    Full text: Dear colleagues from all over the world. Welcome to Argentina. Welcome to Buenos Aires. Welcome to IRPA12. On behalf of the Argentine Radiation Protection Society (SAR), I would like to share with you the story of a dream that came true. Ten years ago, a few dedicated Argentine scientists started dreaming of having an IRPA International Congress in Argentina - the first time in Latin America. At the IRPA International Congress in Hiroshima, an informal presentation was made, which was only supported by SAR and encouraged by IRPA. There was already a bid for the IRPA International Congress in Madrid, strongly supported by the Argentine Government, through the Minister of Foreign Affairs, the Government of the City of Buenos Aires and national academic institutions. At that moment, many countries supported our proposal, sharing with us our dream. We worked very hard in these four years, but we were not alone. The strong support of authorities and staff of the Nuclear Regulatory Authority in Argentina was essential in the organization of IRPA12. Around the world, the cooperation of the International Atomic Energy Agency, the Pan-American Health Organization and the World Health Organization was also fundamental for fulfilment our dream. I would like to mention each of the national and international institutions and colleagues that are supporting IRPA12 with their work, with their funds or with their sponsorship, but there are so many! So, many thanks to all the national and international institutions that are supporting IRPA12; many, many thanks to all the Argentine colleagues and colleagues from all over the world of the different IRPA12 committees, and especially many thanks to all the authorities and colleagues who are here today, with us, sharing this IRPA12 and making real the motto of the Congress: Strengthening Radiation Protection Worldwide. Many thanks and welcome. (author)

  19. 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)

  20. 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.)

  1. 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.

  2. provincia de Buenos Aires (República Argentina

    Directory of Open Access Journals (Sweden)

    Rubén Alberto Cervini

    2008-01-01

    Full Text Available En el estudio que se informa se investigaron las relaciones entre progreso de aprendizaje (valor agregado, motivación y autoconcepto académico del alumno en Matemática, en el marco de los efectos de las características socioeconómicas y académicas del alumno y de su escuela. Para la medición del valor agregado se utilizaron los resultados de dos pruebas estandarizadas de Matemática aplicadas a una cohorte de alumnos de la Provincia de Buenos Aires (República Argentina en dos momentos diferentes (séptimo y noveno años de Educación General Bási ca - EGB. Las mediciones de motivación y de autoconcepto se basaron en respuestas a ítemes binarios de actitudes con respecto a Ma temática y fueron definidas utilizando el análisis de la componente prin - cipal, a partir de la matriz de correlación tetracórica (método heurístico. Para el análisis de las correlaciones se utilizó la téc nica estadística de modelos multinivel. El presente estudio relaciona los resultados empíricos con la teoría del habitus de Bourdieu. Inicialmente, el autoconcepto resulta significativa y positivamente asociado con el puntaje en la prueba y con el progreso de aprendizaje posterior. Este efecto continúa siendo significati vo aun cuando se controlan los efectos del nivel socioeconómi - co y del género del alumno. Sin embargo, su capacidad ex plicativa es muy tenue desde el punto de vista práctico. Si bien este resultado confirmaría la hipótesis central de la teoría de la reproducción, indica un sendero a través del cual podrían producirse transformaciones. Uno de los desafíos del sistema educativo es promover el habitus escolar cultivado (autoconcepto más allá de las determinaciones sociales, culturales y económicas.

  3. Megacity and country emissions from combustion sources-Buenos Aires-Argentina

    Science.gov (United States)

    Dawidowski, L.; Gomez, D.; Matranga, M.; D'Angiola, A.; Oreggioni, G.

    2010-12-01

    Historic time series (1970-2006) emissions of greenhouse gases and air pollutants arising from stationary and mobile combustion sources were estimated at national level for Argentina and at regional level for the metropolitan area of Buenos Aires (MABA). All emissions were estimated using a bottom-up approach following the IPCC good practice guidance. For mobile sources, national emissions include all transport categories. Regional emissions account thus far only for on-road. For national emissions, methodologies and guidance by the IPCC were employed, applying the highest possible tier and using: i)country-specific emission factors for carbon and sulphur and technology-based information for other species, ii)activity data from energy balance series (1970-2007), and iii)complementary information concerning the non-energy use of fuels. Regional emissions in 2006 were estimated in-depth using a technology-based approach for the city of Buenos Aires (CBA) and the 24 neighboring districts composing the MABA. A regional emissions factors database was developed to better characterize Latin American fleets and driving conditions employing COPERT III-IV algorithms and emission factors measured in dynamometers and circulating vehicles in Argentina, Brazil, Chile and Colombia. Past emissions were back estimated from 2005 to 1970 using the best available information, which differs greatly among categories, spatial disaggregation and time periods. The time series of stationary and mobile combustion sources at the national and regional level allowed the identification of distinct patterns. National greenhouse gas emissions in 2006 amounted to ~ 150 million ton CO2-equivalent, 70% of which were contributed by stationary sources. On-road transport was the major contributor within mobile sources (28.1 %). The increasing emissions trends are dominated by on-road transport, agriculture and residential categories while the variability is largely associated with energy industries

  4. New records of forensic entomofauna in legally buried and exhumed human infants remains in Buenos Aires, Argentina.

    Science.gov (United States)

    Mariani, Roxana; García-Mancuso, Rocío; Varela, Graciela L; Kierbel, Ivana

    2017-11-01

    The study of carrion fauna associated with buried human corpses from a forensic perspective could provide useful information in criminal investigations. Insects and other arthropods remains sampled of 44 legally exhumed infant skeletons from La Plata (Buenos Aires, Argentina). They were identified at different taxonomic levels depending on the state of preservation. The specific diversity, abundance and frequency were analyzed and each taxon was assigned to the hypothetical colonization sequence: burial colonization, post-exhumation contamination at cemetery deposit or soil fauna. The phorid Dohrniphora sp. is mentioned for the first time in Argentina as carrion fauna of underground colonization, and the assemblage of Dohrniphora sp., Megaselia scalaris and Hydrotaea aenescens is proposed as indicator of buried cadavers. These findings provide new useful data to be applied in forensic entomology research. Copyright © 2017 Elsevier Ltd and Faculty of Forensic and Legal Medicine. All rights reserved.

  5. Second Line of Defense, Port of Buenos Aires and Exolgan Container Terminal Operational Testing and Evaluation Plan, Buenos Aires, Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Roberts, Bryan W.

    2012-08-23

    The Office of the Second Line of Defense (SLD) Megaports project team for Argentina will conduct operational testing and evaluation (OT&E) at Exolgan Container Terminal at the Port of Dock Sud from July 16-20, 2012; and at the Port of Buenos Aires from September 3-7, 2012. SLD is installing radiation detection equipment to screen export, import, and transshipment containers at these locations. The purpose of OT&E is to validate and baseline an operable system that meets the SLD mission and to ensure the system continues to perform as expected in an operational environment with Argentina Customs effectively adjudicating alarms.

  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. Unusual localization of an hydatid cyst: first reported case in Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Claudia Irene Menghi

    Full Text Available Hydatidosis is a parasitic infection caused by the tapeworm larva of Echinococcus spp. Its relevance lies in its wide distribution, great number of clinical cases and outstanding morbility. Hydatid infection of the orbit comprises far less than 1% of the total incidence. This is a case of a patient from Argentina complaining of a two-week evolution proptosis of the right eye. A microscopic examination revealed the presence of protoscolices of Echinococcus spp. in the fluid obtained during the surgical proceedings. The patient was treated with oral albendazole. To our knowledge, this is the first case of occular hydatidosis diagnosed in the city of Buenos Aires, Argentina.

  8. Salud auto-referida y desigualdades sociales, ciudad de Buenos Aires, Argentina, 2005 Self-rated health and social inequalities, Buenos Aires, Argentina, 2005

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    Marcio Alazraqui

    2009-09-01

    Full Text Available La salud auto-referida es un indicador de calidad de vida. ¿Cuál es el impacto de las características socioeconómicas a nivel individual y a nivel de la vecindad, consideradas simultáneamente, en el estado de salud auto-referida a nivel individual? Diseño de análisis multinivel con dos niveles: individual y vecindad. Las fuentes de información fueron: Encuesta Nacional de Factores de Riesgo (muestreo probabilístico multietápico y Censo Poblacional. La regresión lineal muestra que mayores niveles de educación, de ingresos y de categoría laboral se relacionan con mejor salud auto-referida; y el aumento de la edad con peor salud. En el análisis multinivel, a medida que la proporción de individuos con educación inferior aumentaba en la fracción censal, aumentaba también la proporción de individuos con peor salud auto-referida. Mejorar la salud general de la población requerirá estrategias y acciones que disminuyan los niveles de desigualdad social en sus múltiples dimensiones, individual y de vecindad.Self-rated health is a quality-of-life indicator. This study investigates the impact of individual-level and neighborhood-level socioeconomic characteristics, considered simultaneously, on the state of self-rated health at the individual level in Buenos Aires, Argentina. The study employs a two-level (individual and neighborhood multilevel analysis, and the data sources were the 2005 Argentina National Risk Factor Survey (multistage probabilistic sample and the 2001 Population Census. Linear regression shows that higher schooling and income, as well as occupational category, are related to better self-rated health, and increasing age with worse health. In the multilevel analysis, an increase in the proportion (per census tract of individuals with less schooling was associated with an increase in the proportion of individuals with worse self-rated health. Improving the general health of the population requires strategies and action

  9. Argentina

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    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.

  10. [Prevalence of associated microorganisms in genital discharge, Argentina].

    Science.gov (United States)

    Di Bartolomeo, Susana; Rodriguez Fermepin, Marcelo; Sauka, Diego H; Alberto de Torres, Ramón

    2002-10-01

    There was a significant increase in the number of women demanding gynecological care in public hospital of the Great Buenos Aires, Argentina, between 1997 and 1998. It was necessary to update the prevalence of associated microorganisms in order to review the laboratory support and adjust prevention and control guidelines. Samples from vaginal and endocervical discharge, from total cases: 84 adolescents (15 to 19 years) and 784 adults (20-60 years) attended in 1997-1998, were studied. Neisseria gonorrhoeae, Streptococcus agalactiae, Trichomonas vaginalis, Candida spp, and bacterial vaginosis, were diagnosed applying direct detection methods and specific culture isolation. Chlamydia trachomatis (antigen detection), Ureaplasma urealyticum and Mycoplasma hominis (culture) were also studied in part of the population. Patient care increased steadily from 1997 and there was an increase of 2.1 times from the first semester to the last one in 1998. Bacterial vaginosis was the most prevalent disease in the adult group, with 23.8%; followed by Candida spp 17.8%; S. agalactiae 5.6%; T.vaginalis 2.4%. In 50.3% of total adult cases neither bacterial vaginosis or presence of any sought microorganisms, was detected. In the adolescents group the most frequent detection was Candida spp with a 29.7%; bacterial vaginosis in 17.8%; followed by S. agalactiae 3.6%, T.vaginalis 2.4%. Also in this group on an important number of cases, 46.4%, none bacterial vaginosis or the presence of the sought microorganism were found. In some of the adult group, C. trachomatis (7/400) 1.76%, U. urealyticum (209/340) 61.4% and M. hominis (45/272) 16.5% were detected. Bacterial vaginosis and Candida spp prevalence is important in both groups. The absence of N. gonorrhoeae and lower prevalence of T. vaginalis and C. trachomatis is remarkable. A high prevalence of U. urealyticum and M. hominis were also detected, but the actual pathogenic role in adult women is still under discussion. The significant

  11. 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.

  12. Reptiles escamosos (Squamata del Pleistoceno Medio del Norte de la ciudad de Mar del Plata (provincia de Buenos Aires, Argentina

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    Santiago Brizuela

    2015-05-01

    Full Text Available In this study, we describe two fossil remains of squamate reptiles found in Middle Pleistocene outcrops at the northern marine cliffs of the city of Mar del Plata (Buenos Aires province. The specimens were found forming a taphocenosis with remains of other microvertebrates (amphibians, mammals and birds. The reptiles recognized in the association are represented by remains of an undetermined colubrid, and the anguid Ophiodes sp. This latter finding represents the first fossil record for the family Anguidae exhumed in Argentina.

  13. Comparative study of urban development and groundwater condition in coastal areas of Buenos Aires, Argentina

    Science.gov (United States)

    Rodrigues Capítulo, Leandro; Carretero, Silvina C.; Kruse, Eduardo E.

    2017-08-01

    The geomorphological evolution of a sand-dune barrier in Buenos Aires, Argentina, is analyzed as a factor regulating the fresh groundwater reserves available. The impact of geomorphological evolution and the consequences for the social and economic development of two coastal areas are assessed. This is one of the most important tourist destinations in the country; for study purposes, it was divided into a northern sector and a southern sector. In the southern sector, the exploitable groundwater is associated with the Holocene and upper Pleistocene geomorphological evolution, which generated three interrelated aquifer units, constituting a system whose useful thickness reaches at least 45 m. In contrast, the northern sector is restricted to two Holocene aquifer units, whose total thickness is on the order of 12 m. The morphological characteristics and the occurrence of the largest fresh groundwater reserves in the southern sector are indicators of better conditions for economic growth, which is mainly reflected on the expansion of real estate ventures. The relationships of transmissivity vs area of real estate ventures (Arev), and total water consumption vs Arev, are indicators for the sustainable management of the water resources. The approach chosen may be used by decision makers in other regions to assess the feasibility of future tourism projects on the basis of the availability of water resources associated with geomorphological features.

  14. Tobacco point-of-sale advertising in Guatemala City, Guatemala and Buenos Aires, Argentina.

    Science.gov (United States)

    Barnoya, Joaquin; Mejia, Raul; Szeinman, Debora; Kummerfeldt, Carlos E

    2010-08-01

    To determine tobacco point of sale advertising prevalence in Guatemala City, Guatemala and Buenos Aires, Argentina. Convenience stores (120 per city) were chosen from randomly selected blocks in low, middle and high socioeconomic neighbourhoods. To assess tobacco point of sale advertising we used a checklist developed in Canada that was translated into Spanish and validated in both countries studied. Analysis was conducted by neighbourhood and store type. All stores sold cigarettes and most had tobacco products in close proximity to confectionery. In Guatemala, 60% of stores had cigarette ads. High and middle socioeconomic status neighbourhood stores had more indoor cigarette ads, but these differences were determined by store type: gas stations and supermarkets were more prevalent in high socioeconomic status neighbourhoods and had more indoor cigarette ads. In poorer areas, however, more ads could be seen from outside the stores, more stores were located within 100 metres of schools and fewer stores had 'No smoking' or 'No sales to minors' signs. In Argentina, 80% of stores had cigarette ads and few differences were observed by neighbourhood socioeconomic status. Compared to Guatemala, 'No sales to minors' signs were more prevalent in Argentina. Tobacco point of sale advertising is highly prevalent in these two cities of Guatemala and Argentina. An advertising ban should also include this type of advertising.

  15. Segunda encuesta antropometrica de embarazadas de la ciudad de Buenos Aires, Argentina 2010 The second anthropometric survey of pregnant women in the city of Buenos Aires, Argentina 2010

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    Andrés Bolzán

    2011-12-01

    Full Text Available OBJETIVOS: mostrar los resultados de la segunda encuesta antropométrica en embarazadas en Buenos Aires, Argentina. MÉTODOS: fueron medidas todas las embarazadas que concurrieron a control de salud durante una semana en los consultorios externos y centros de salud de las 12 maternidades públicas valorándose su peso, talla e índice de masa corporal (IMC. Se empleo una encuesta estructurada. RESULTADOS: fueron evaluadas 2811 embarazadas, nacidas en Argentina (49% y en otros países (51%. Dentro de este segundo grupo, un 49% correspondió a mujeres nacidas en Bolivia (22%, Paraguay (19% y Perú (8%. El problema nutricional más importante lo constituyó el exceso de peso con diferencias estadísticamente significativas según país de nacimiento. Se observaron dos curvas claramente diferenciadas en el IMC de embarazadas adolescentes y adultas. CONCLUSIONES: la investigación permitió obtener el perfil de estado nutricional durante la gestación empleando curvas nacionales de incremento del IMC ajustado por edad gestacional y observar el efecto de algunos determinantes sociales.OBJECTIVES: to present the results of the second anthropometric survey ofpregnant women in Buenos Aires, Argentina. METHODS: measurements were taken of all pregnant women attending the outpatient services of 12 public maternity hospitals during one week. Measurements included weight, height and body mass index (BMI. The survey was a structured survey. RESULTS: the study covered 2811 pregnant women born in Argentina (49% and other countries (51%. Of the latter, 49% were women born in Bolivia (22%, Paraguay (19% and Peru (8%. The main nutritional problem was overweight and there were statistically significant differences according to country of birth. The BMI curves for pregnant adults and pregnant adolescents exhibited clear differences. CONCLUSIONS: the survey provided a profile of the nutritional status of pregnant women, using national BMI growth curves adjusted for

  16. Air pollution biomonitoring in Argentina, application of neutron activation analysis to the study of biomonitors

    International Nuclear Information System (INIS)

    Pignata, Maria Luisa; Pla, Rita R.

    2001-01-01

    Due to low population density, total air pollutant emissions in Argentina are still low if compared with highly industrialised countries. Although a significant deterioration of air quality has been observed for a long time, air monitoring did not begin until the 90's and only in a few cities. The use of air pollution biomonitors represents an important contribution to Argentina, as measurements of air pollutants in large areas would require especial technical equipment not easily available and operated. In this project, two lichen species (Ramalina ecklonii (Spreng) Mey and Flot and Usnea amblyoclada (Muell. Rg.) Zahlbr.) and a Bromeliaceae (Tillandsia capillaris) are used as biomonitors of air pollution at a 50, 000 km 2 area in Cordoba province (central Argentina). AAS and INAA have been applied for the analysis of samples, determining As, Ba, Br, Ce, Co, Cr, Cs, Cu, Eu, Fe, Hf, Gd, K, La, Lu, Mn, Na, Ni, Pb, Rb, Sb, Sc, Sm, Ta, Tb, Th, U, Yb and Zn. The following physiological parameters were also determined: chlorophyll a, chloropyll b, phaeophytin a, phaeophytin b, hydroperoxy conjugated dienes, malonaldehide and sulphur. Some of these parameters were used for calculating a pollution index. These determinations were carried out on pools collected at the sampling sites. AAS and physiological parameters were also applied to the analysis of five-replicate samples in order to study variability sources. For data evaluation, different statistical and other evaluating tools were used: descriptive statistics and Spearman's correlation analysis were used on data from the three biomonitor species while factor analysis and mapping, only for R. ecklonii results. (author)

  17. Acerca De La Identidad Boliviana En Argentina. Un Análisis De Tres Casos De Estudio En La Provincia De Buenos Aires, Argentina

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    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.

  18. Viral diagnostic criteria for Feline immunodeficiency virus and Feline leukemia virus infections in domestic cats from Buenos Aires, Argentina.

    Science.gov (United States)

    Galdo Novo, Sabrina; Bucafusco, Danilo; Diaz, Leandro M; Bratanich, Ana Cristina

    A cross-sectional study was carried out on cats attending the Small Animal Hospital at the Faculty of Veterinary Sciences of the University of Buenos Aires to assess the prevalence and associated risk factors of Feline immunodeficiency virus (FIV) and Feline leukemia virus (FeLV) in the city of Buenos Aires, Argentina. Blood samples from 255 cats with symptoms compatible with FIV or FeLV infection, collected between 2009 and 2013 were analyzed by serology (immunochromatography, IA) and by hemi-nested PCR (n-PCR). The IA and n-PCR assays showed similar percentages of positivity for FIV while the n-PCR test was more sensitive for FeLV. Differences between the diagnostic tests and their choice according to the age of the animal are discussed. The clinical histories of ninety of the 255 cats showed blood profiles similar to others previously reported and revealed a higher risk of infection in male adult cats with outdoor access. Copyright © 2016 Asociación Argentina de Microbiología. Publicado por Elsevier España, S.L.U. All rights reserved.

  19. Characterization of atmospheric aerosol in Buenos Aires, Argentina

    International Nuclear Information System (INIS)

    Jasan, R.C.; Pla, R.R.; Invernizzi, R.; Dos Santos, M.

    2009-01-01

    PM10 and PM2.5 samples were taken using a Gent sampler to characterize the atmospheric aerosol of Buenos Aires metropolitan area. A total of 114 samples were collected from October 2005 to October 2006 at one urban site, every third day, for 24 h. Samples were analyzed by neutron activation, and black carbon and mass concentration were determined. In both fractions, elemental and gravimetric mass concentrations were compared with historical data. Enrichment factors, backward trajectories and factor analysis were calculated. The attribution of pollution sources is discussed. (author)

  20. New toxics, new poverty: a social understanding of the freebase cocaine/Paco in Buenos Aires, Argentina.

    Science.gov (United States)

    Epele, María E

    2011-01-01

    Included within the field of research on changes in drug use patterns and vulnerability are conditions of emergency related to economic crisis, wars, and political conflict. This study addresses the complex connections between the rapid propagation of freebase cocaine (FBC)-locally known as "pasta base" or "Paco" in Argentina and the normalization of the consequences of Argentina's 2001-2002 political-economic crisis. On the basis of the results of an ethnographic study carried out in three neighborhoods of the Greater Buenos Aires area between 2001 and 2005, this article aims to analyze how changes in the material and social living conditions are interrelated with the high toxicity of FBC/Paco and engender the emerging compulsion of its consumption and deterioration to the bodies, subjectivities, and social activities of active drug users from these shantytowns. By analyzing the changes in transactions directly or indirectly involving drugs-specifically those ranging from cocaine to FBC/Paco-we can argue how structural poverty, "new poverty," is not only associated with the expansion of FBC/Paco but is also shaped by its use, modes of consumption, associated health problems, and sufferings.

  1. Genotypes of Leptospira spp. strains isolated from dogs in Buenos Aires, Argentina.

    Science.gov (United States)

    Grune Loffler, Sylvia; Passaro, Diego; Samartino, Luis; Soncini, Analía; Romero, Graciela; Brihuega, Bibiana

    2014-01-01

    Leptospirosis is an infectious disease of wide global distribution, which is endemic in Argentina. The objective of this study was to obtain the genetic profiles of Leptospira spp. strains isolated from clinical cases of dogs in the province of Buenos Aires by the multiple-locus variable-number tandem repeat analysis (MLVA). Eight isolated canine strains were genotyped by MLVA, obtaining the identical profile of Leptospira interrogans serovar Canicola Hond Utrecht IV in the strains named Dogy and Mayo. The strains named Bel, Sarmiento, La Plata 4581 and La Plata 5478 were identical to the profile of the genotype of L. interrogans serovar Portlandvere MY 1039.The strain named Avellaneda was identical to the genotype profile of L. interrogans serovar Icterohaemorrhagiae RGA and the strain named SB had the same profile as the L. interrogans serovar Pomona Baires genotype and was similar to the profile of serovar Pomona Pomona genotype. It would be useful to include a larger number of isolates from different dog populations in various provinces of Argentina and to characterize the genetic profiles of the strains circulating in the country. The information obtained will be useful for the control of leptospirosis in the dog population. Copyright © 2014 Asociación Argentina de Microbiología. Publicado por Elsevier España. All rights reserved.

  2. Child feeding practices and household food insecurity among low-income mothers in Buenos Aires, Argentina.

    Science.gov (United States)

    Lindsay, Ana Cristina; Ferarro, Mabel; Franchello, Alejandra; Barrera, Raul de La; Machado, Marcia Maria Tavares; Pfeiffer, Martha Erin; Peterson, Karen Eileen

    2012-03-01

    This qualitative study of low-income mothers in Buenos Aires, Argentina, examines the influence of socio-economic conditions, organizational structures, family relationships, and food insecurity on child feeding practices and weight status. Thirty-eight mothers of preschool children living in urban Buenos Aires participated in four focus group discussions. The results indicated that many mothers were aware that obesity may be detrimental to the child's health, but most of them are unclear about the specific consequences. Maternal employment, family pressures, food insecurity and financial worries seem to influence child feeding practices. These findings have important implications for developing strategies for nutritional assistance that could benefit the health of children and provide opportunities for educational programs that are directed to nutritional awareness in Buenos Aires, Argentina. The right to eat regularly and properly is an obligation of the State and must be implemented taking into account the notion of food sovereignty and respecting the importance of preserving the culture and eating habits of a country and its diverse population groups.

  3. Condiciones sanitarias de los comedores comunitarios del conurbano de Buenos Aires, Argentina

    OpenAIRE

    Arango Julia; Agostini Adela; Silvestre Alejandro; Yaafar Marcela; López Clara; Fishmann Hilda

    1997-01-01

    Debido a la importancia que la inocuidad de los alimentos entraña para la salud pública, se procuró determinar la calidad microbiológica de los alimentos que consumen los usuarios de los comedores comunitarios del conurbano de Buenos Aires, Argentina. Se trata de un estudio descriptivo, cuyo universo lo conformaron tres municipios con índices medianos y altos de pobreza, de los que se extrajo al azar una muestra de 52 comedores. La información se recolectó desde abril de 1994 hasta abril de 1...

  4. Opiniones y representaciones sociales de varones sobre aborto en Buenos Aires, Argentina

    OpenAIRE

    Petracci,Mónica

    2011-01-01

    Este artículo está basado en una investigación cualitativa cuyo objetivo fue explorar las opiniones de varones de 25 a 39 años de estratos socioeconómicos medios y populares, residentes en el Área Metropolitana de la Ciudad de Buenos Aires, Argentina (n: 30) acerca de la despenalización del aborto y sus representaciones sociales sobre el mismo. Los hallazgos han corroborado resultados previos y han aportado nuevos conocimientos. Se confirmó la ambivalencia de los discursos sobre el aborto, ya...

  5. 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).

  6. Primer registro de Tremex fuscicornis (Hymenoptera: Siricidae para la Argentina en una plantación de álamos en Buenos Aires First record of Tremex fuscicornis (Hymenoptera: Siricidae in Argentina infesting a poplar plantation in Buenos Aires

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    Lucas Landi

    2011-12-01

    Full Text Available La presencia de la "avispa taladradora de las latifoliadas", Tremex fuscicornis Fabricius (Hymenoptera: Siricidae, fue detectada en una plantación de álamos de la provincia de Buenos Aires, lo que constituye el primer registro de la especie para la Argentina. Se describen aspectos morfológicos y biológicos de la misma.The presence of the woodwasp Tremex fuscicornis Fabricius (Hymenoptera: Siricidae was detected in a poplar plantation in Buenos Aires. This is the first record of the species in Argentina. Morphological and biological aspects of the woodwasp are described.

  7. In situ monitoring of urban air in Córdoba, Argentina using the Tradescantia-micronucleus (Trad-MCN) bioassay

    Science.gov (United States)

    Carreras, H. A.; Pignata, M. L.; Saldiva, P. H. N.

    During the last decades, a significant deterioration of ambient air quality has been observed in Argentina. However, the availability of air pollution monitoring stations is still limited to only few cities. In this study, we investigated the genotoxicity of ambient levels of air pollution in Córdoba using the Tradescantia micronucleus assay. The experiment was performed from October, 2004 to April 2005. Pots with Tradescantia pallida were placed in three sites: Córdoba city center, characterized by important avenues with high traffic activity (cars, taxis, and public transport vehicles); the university campus, along a side road with heavy traffic of gasoline and diesel powered vehicles, buses and trucks; and a residential area, with no significant local sources of air pollution. Twenty young T. pallida inflorescences were collected from each sampling site in November, February and April. Micronuclei frequencies were determined in early tetrads of pollen mother cells and expressed as MCN/100 tetrads. Simultaneously, the environmental levels of total suspended particles (24 h mean) were determined for each site. A significant difference in micronuclei frequency was observed among sites ( p=0.036). Post-hoc analysis revealed that the residential area exhibited a lower micronuclei frequency than the university and city center areas. In conclusion, we found that the gradients of ambient air pollution of Córdoba are associated with changes in the spontaneous micronuclei frequency of Tradescantia pollen mother cells. These results indicate that in situ biomonitoring with higher plants may be useful for characterizing air pollution in areas without instrumental monitoring techniques, or for exploring the distribution of air contaminants at a microscale.

  8. Geochemical Assessment of Groundwater in the Peri-urban Environment of Buenos Aires, Argentina

    Science.gov (United States)

    Gallardo, A.

    2014-12-01

    Groundwater pollution is a major concern in peri-urban environments. Thus, water quality is being investigated at several domestic wells in Brandsen, 70 km south of Buenos Aires, Argentina. To present, about 20 water sources were sampled in orchards and small farms of the area. There is limited data about the wells construction, although collected information suggests that groundwater is derived from the superficial sandy loams of the Pampean Aquifer. Samples were analysed for major inorganic elements using ion chromatography and ICP-MS. Titration was used to estimate alkalinity. Physical characteristics (EC, pH, temperature) were measured on site. Results show that groundwater pH ranges from 6.5 to 7.8, with a specific conductance of 180 to 255 mS/m. A peak of 360 mS/m in one horticultural parcel is associated to local NO3- concentrations up to 140 mg/L. This value exceeds the maximum recommendations set by the WHO (50 mg/L). Considering that fertilizer inputs in that property are negligible, the high levels of NO3- might be attributed to effluents from a neighbour septic tank. An increase in NO3- (>150mg/L) was also detected in two conventional farms. This increase correlates to elevated SO42- concentrations (>300 mg/L) suggesting thus, fertilizers percolation into the saturated zone. The leaching of these fluids might be exacerbated by irrigation during new planting, and accumulations of fertilizer-solids in the root zones from previous seasons. Chloride concentrations average ~90 mg/L and would not pose a threat to health at the moment. Its main origin would be related to connate waters in the loam matrix, although some anthropogenic inputs might occur in the previously described farms. In general, the rest of the analysed elements fall within acceptable levels for drinking purposes as well. Nevertheless, further work is still necessary to better define the fate of the potential harmful elements and assess seasonal variations in water quality.

  9. [Historical notes on Infectious Diseases Hospital Francisco Javier Muñiz in Buenos Aires, Argentina].

    Science.gov (United States)

    Laval, Enrique

    2012-08-01

    The Infectious Diseases Hospital Francisco Javier Muñiz, Buenos Aires, Argentina, is the oldest in Latin America. It is over 100 years old and has a history worthy of pride. It became known as "Hospital of the pests" and was preceded by the old House of Insulation, which served as a quarantine station during epidemics of cholera, yellow fever and smallpox. The new House of Insulation, built in the neighborhood of Parque Patricios ("Barracks Hospital"), was renamed in 1904 in memory of Francisco Javier Muñiz, a former military doctor, naturalist and paleontologist. Its technical name is "Porteño Care Centre and National Reference Regional Infectious-Contagious Disease". It receives numerous national and foreign undergraduate and postgraduate students in its Departments of Infectious Diseases and Respiratory Diseases.

  10. 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.

  11. Transmission questioned. Youth, awareness, and memory of repression at Posadas Hospital, in Buenos Aires, Argentina

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    Emilio Crenzel

    2011-07-01

    Full Text Available This paper analyses popular wisdom and memory transmission regarding State terrorism and forced disappearance, which are circulating among youth living around Hospital Posadas, located in Haedo, a province to Buenos Aires, Argentina. At this hospital, there was, under the military dictatorship (1976-1983, a Clandestine Imprisonment Center, where people were kept prisoner as disappeared. Therefore, at this facility both practices of health restoration and torture and murder perpetration coexisted. Through thirty indepth interviews carried out among neighbor young people, the existence of manifold knowledge fractures and memory transmission about State violence is verified, being a result from the social relations breakthrough that used to articulate the neighborhood and the hospital, and from the material life conditions promoting undifferentiated historical and political time awareness.

  12. Opportunities for Local Development: The Case of Southwest Buenos Aires (Argentina

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    Romina Valeria Schroeder

    2011-07-01

    Full Text Available In recent decades, rural areas near Bahía Blanca (Buenos Aires, Argentina struggle with many changes as a result of economic and technological transformations. Tese changes have limited rural communities' economic development options, making older development strategies less viable and forcing many to look for nontraditional ways to sustain themselves. One of the most popular strategies has been tourism and recreational activities. The purpose of this article is to establish how public and private initiatives are linked to the local development process. The interviews carried out made it possible to observe a process of transformation in the territory, which involves institutions, organization of actors, and strategies for addressing challenges and opportunities.

  13. 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.

  14. Criterios diagnósticos para la infección por el virus de la inmunodeficiencia felina y el virus de la leucemia felina en gatos domésticos de Buenos Aires, Argentina

    OpenAIRE

    Galdo Novo, Sabrina; Bucafusco, Danilo; Diaz, Leandro M; Bratanich, Ana Cristina

    2016-01-01

    A cross-sectional study was carried out on cats attending the Small Animal Hospital at the Faculty of Veterinary Sciences of the University of Buenos Aires to assess the prevalence and associated risk factors of Feline immunodeficiency virus (FIV) and Feline leukemia virus (FeLV) in the city of Buenos Aires, Argentina. Blood samples from 255 cats with symptoms compatible with FIV or FeLV infection, collected between 2009 and 2013 were analyzed by serology (immunochromatography, IA) and by hem...

  15. Asociación entre geohelmintos y condiciones socioambientales en diferentes poblaciones humanas de Argentina Associations between geohelminths and socioenvironmental conditions among different human populations in Argentina

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    María Inés Gamboa

    2009-07-01

    Full Text Available OBJETIVOS: Analizar la relación entre las especies de geohelmintos identificadas en poblaciones urbanas, suburbanas y rurales de las Provincias de Buenos Aires y Misiones, Argentina, y los aspectos socioambientales que favorecen la infestación por estos parásitos. MÉTODOS: Estudio transversal. Se analizaron 700 muestras fecales humanas provenientes de 319 familias residentes en una población urbana (LPU y dos suburbanas (LPS, LPN de la Provincia de Buenos Aires, y una población rural de la provincia de Misiones (MR, en Argentina. Se colectaron 35 muestras fecales de perros y 205 de tierra, y se completaron encuestas sobre las características socioambientales de las localidades estudiadas. Se utilizaron las técnicas de análisis parasitológicos de Ritchie, Carles Barthelemy, Fülleborn y Kato Katz. RESULTADOS: La frecuencia de parasitosis fue mayor en MR (78,4%, seguida de las áreas suburbanas LPN (35,0% y LPS (25,8%, y fue menor en la zona urbana LPU (5,7%. Los ancilostomideos (71,1% y Strongyloides stercoralis (22,2% se detectaron solamente en MR y Ascaris lumbricoides, Hymenolepis nana y Trichuris trichiura fueron más frecuentes en LPN. Las muestras de heces de perros de Misiones presentaron una mayor frecuencia de parásitos (100% que las de las localidades de Buenos Aires, pero el suelo del sector urbano bonaerense resultó más contaminado. Las prácticas de alimentación y defecación poco higiénicas, el hacinamiento, el hábito de no usar calzado y el piso de tierra en las viviendas se asociaron significativamente con una mayor frecuencia de geohelmintos y pseudogeohelmintos intestinales (P OBJECTIVES: To analyze the relationship between the geohelminth species found in urban, suburban, and rural areas of the Buenos Aires and Misiones provinces of Argentina, and the socioenvironmental conditions that promote infection by these parasites. METHODS: This was a cross-sectional study that analyzed 700 human fecal samples taken from

  16. 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.

  17. Fungal monitoring of the indoor air of the Museo de La Plata Herbarium, Argentina.

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    Mallo, Andrea C; Elíades, Lorena A; Nitiu, Daniela S; Saparrat, Mario C N

    Biological agents, such as fungal spores in the air in places where scientific collections are stored, can attack and deteriorate them. The aim of this study was to gather information on the indoor air quality of the Herbarium of Vascular Plants of the Museo de Ciencias Naturales de La Plata, Argentina, in relation to fungal propagules and inert particles. This study was made using a volumetric system and two complementary sampling methods: (1) a non-viable method for direct evaluation, and (2) a viable method by culture for viable fungal propagules. The non-viable method led to ten spore morphotypes being found from related fungal sources. A total of 4401.88spores/m 3 and 32135.18 inert suspended particles/m 3 were recorded. The viable method led to the finding of nine fungal taxa as viable spores that mostly belonged to anamorphic forms of Ascomycota, although the pigmented yeast Rhodotorula F.C. Harrison (Basidiomycota) was also found. A total count of 40,500fungal CFU/m 3 air was estimated for all the sites sampled. Both the non-viable and viable sampling methods were necessary to monitor the bio-aerosol load in the La Plata Herbarium. The indoor air of this institution seems to be reasonably adequate for the conservation of vascular plants due to the low indoor/outdoor index, low concentrations of air spores, and/or lack of indicators of moisture problems. Copyright © 2016 Asociación Española de Micología. Publicado por Elsevier España, S.L.U. All rights reserved.

  18. Consumo de medicamentos y equidad en materia de salud en el Área Metropolitana de Buenos Aires, Argentina Drug consumption and health equity in the Metropolitan Area of Buenos Aires, Argentina

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    Valeria Alonso

    2003-06-01

    Full Text Available OBJETIVO: Medir la equidad manifestada por los patrones de consumo de medicamentos en el Área Metropolitana de Buenos Aires, Argentina, a la luz de las transformaciones operadas en el mercado farmacéutico argentino después de la desregulación de la economía en 1991. METODOLOGÍA: Se procesaron y analizaron fuentes estadísticas secundarias: se utilizaron dos encuestas domiciliarias que contenían un módulo sobre la utilización de servicios de salud y gastos asociados diseñado por el Ministerio de Salud y aplicado al Área Metropolitana de Buenos Aires en 1989 y 1995. RESULTADOS: Se constató un aumento del carácter socialmente regresivo del gasto de bolsillo en medicamentos entre 1989 y 1995, en un mercado farmacéutico que ha duplicado sus precios medios en el nuevo contexto de liberación de precios y apertura de las importaciones. Esta regresión se manifestó en el crecimiento del gasto directo de la compra de medicamentos, el aumento de la parte correspondiente a los medicamentos en la estructura del gasto privado para la salud y el incremento desigual del peso relativo de dicho gasto en los ingresos familiares. CONCLUSIONES: El gasto de bolsillo en medicamentos resulta un indicador eficiente de equidad financiera para el estudio de la protección de la población urbana argentina frente al riesgo de enfermar, y puede contribuir a la adecuación del marco regulador del mercado farmacéutico, mediante la incorporación de criterios sociales de evaluación a la ecuación farmacológica de seguridad y eficacia terapéutica.OBJECTIVE: To assess the level of equity in drug consumption patterns in the Metropolitan Area of Buenos Aires, Argentina, given the transformation of the Argentine pharmaceutical market since the deregulation of the country's economy in 1991. METHODOLOGY: For this study, data from secondary statistical sources were processed and analyzed. The secondary sources used were two household surveys that contained a module

  19. 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

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    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

  20. Estacionamiento subterráneo en Buenos Aires República Argentina

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    Editorial, Equipo

    1980-04-01

    Full Text Available The 370 car-stall, 4-level longitudinal type car park was a promotion of the Buenos Aires City Council and was built under Avenida de Córdoba in the Argentinean Capital. The facility is provided with the most sophisticated fire prevention systems, automatic sign systems, vehicle counting equipment to know at any one moment how many are present, public restrooms, locker rooms for the staff, forced ventilation, etc. The structure is formed by a peripheral retention wall, rolled steel columns, and ribbed reinforced concrete slabs in floors and ramps.

    Promovido por la Municipalidad de la ciudad de Buenos Aires se ha construido, en la Avenida de Córdoba de la capital argentina, un estacionamiento de tipo longitudinal con capacidad para 370 plazas, distribuidas en cuatro plantas, dotado de todos los modernos sistemas contra incendios, sistemas automáticos de señalización y contabilización de vehículos en cada momento, aseos públicos, vestuarios para personal, ventilación, etc. La estructura está constituida por muros pantalla perimetrales, pilares de acero laminado y losas aligeradas de hormigón armado en rampas y forjados.

  1. ESTUDIO DE CALIDAD DEL AIRE EN CANTERAS A CIELO ABIERTO EN GENERAL ROCA, ARGENTINA

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    Paula Andea Paez

    2017-12-01

    Full Text Available This research have the objetive propose a study methodology to evaluate air quality in a mining activity based on the confiability and analysis of meteorological, topographic and emission data, which are entered into the dispersion model. The methodology was applied to the emissions the particulate material with a size smaller than 10 μm (PM10 generated from the operation of open pit quarries, near General Roca town (Argentina; and then evaluates their dispersion and possible impact on human health and / or the environment. The seasonal variations of the dispersion were analyzed and the Gaussian dispersion model used is AERMOD. The results showed that PM10 dispersion in different atmospheric conditions and emissions in 2010, don´t influence urban areas near quarries and don´t that exceed the legal limit. From the analysis of the seasonal variations of the dispersion changes were observed in the extension of the plume and in the maximum hourly concentration, especially in the autumn and winter seasons. The results of the modeling (maximum hourly concentration values were compared with aerosol concentration data, obtained by remote sensors; Resulting in a determination coefficient (R2 ~ 0.7. The proposed work methodology can be incorporated as a control tool in government agencies for the evaluation and management of air quality so as to prevent unsatisfactory scenarios.

  2. Industrial heritage and tourism: analysis of potentiality and motion for a circuit of industrial tourism in Barracas, Buenos Aires, Argentina

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    Aldo Guzman Ramos

    2016-03-01

    Full Text Available Argentina´s industrial development which started at the end of 19th  century and suffered a drop in 1970 decade has left numerous real state and private properties spread in the national territory. It`s feasible to use them through Industrial Tourism as a mechanism to economically and socially reactivate abandoned spaces and in crisis, but also as a way to revitalize their identity and culture recovering a part of their history. Exploratory and descriptive methodology implied a reconnaissance of industrial properties located in Barracas neighborhood from Ciudad de Buenos Aires, Argentina, applying variables to determine the state and touristic-recreational potentiality by means of Likert scale. As a result 68 places were selected and after utilizing the variables 24 sites remained, which were organized to prepare an Industrial Tourist Circuit that could complement Buenos Aires cultural offer.

  3. Neorickettsia risticii, Rickettsia sp. and Bartonella sp. in Tadarida brasiliensis bats from Buenos Aires, Argentina.

    Science.gov (United States)

    Cicuttin, Gabriel L; De Salvo, María N; La Rosa, Isabel; Dohmen, Federico E Gury

    2017-06-01

    Bats are potential reservoirs of many vector-borne bacterial pathogens. The aim of the present study was to detect species of Anaplasma, Ehrlichia, Neorickettsia, Rickettsia, Borrelia and Bartonella in Brazilian free-tailed bats (Tadarida brasiliensis, Molossidae) from Buenos Aires city, Argentina. Between 2012 and 2013, 61 T. brasiliensis from urban areas of Buenos Aires city were studied. The samples were molecularly screened by PCR and sequencing. Five bats (8.2%) were positive to Neorickettsia risticii, one (1.6%) was positive to Rickettsia sp. and three bats (4.9%) to Bartonella sp. For molecular characterization, the positive samples were subjected to amplification and sequencing of a fragment of p51 gene for N. risticii, a fragment of citrate synthase gene (gltA) for Rickettsia genus and a fragment of gltA for Bartonella genus. Phylogenetic tree was constructed using the maximum-likelihood method. Phylogenetic analysis of N. risticii detect in our study revealed that it relates to findings in the USA West Coast; Rickettsia sp. detected is phylogenetically within R. bellii group, which also includes many other Rickettsia endosymbionts of insects; and Bartonella sp. found is related to various Bartonella spp. described in Vespertilionidae bats, which are phylogenetically related to Molossidae. Our results are in accordance to previous findings, which demonstrate that insectivorous bats could be infected with vector-borne bacteria representing a potential risk to public health. Future research is necessary to clarify the circulation of these pathogens in bats from Buenos Aires. Copyright © 2017 Elsevier Ltd. All rights reserved.

  4. A new species of Tullbergia (Collembola, Tullbergiidae) from Buenos Aires, Argentina

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    Palacios-Vargas, José G.; Martínez, Ana E. Salazar

    2014-01-01

    Abstract A new species of Tullbergia from Argentina is described and illustrated; it is differentiated from Tullbergia paranensis by the number of vesicles of postantennal organ, pseudocelli shape and its formulae and the number of dorsal sensilla on Ant. IV. In addition a key for the identification of the members of the family from Argentina is included. PMID:25061344

  5. Prevalencia de microorganismos asociados a secreción genital femenina, Argentina Prevalence of associated microorganisms in genital discharge, Argentina

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    Susana Di Bartolomeo

    2002-10-01

    adultas debe ser reconsiderada. Las prevalencias establecidas motivan la necesidad de adecuar los manuales de procedimientos apuntando a la aplicación de metodologías simples de alto valor predictivo.OBJECTIVE: There was a significant increase in the number of women demanding gynecological care in public hospital of the Great Buenos Aires, Argentina, between 1997 and1998. It was necessary to update the prevalence of associated microorganisms in order to review the laboratory support and adjust prevention and control guidelines. METHODS: Samples from vaginal and endocervical discharge, from total cases: 84 adolescents (15 to 19 years and 784 adults (20-60 years attended in 1997-1998, were studied. Neisseria gonorrhoeae, Streptococcus agalactiae, Trichomonas vaginalis , Candida spp, and bacterial vaginosis, were diagnosed applying direct detection methods and specific culture isolation. Chlamydia trachomatis (antigen detection, Ureaplasma urealyticum and Mycoplasma hominis (culture were also studied in part of the population. RESULTS: Patient care increased steadily from 1997 and there was an increase of 2.1 times from the first semester to the last one in 1998. Bacterial vaginosis was the most prevalent disease in the adult group, with 23.8%; followed by Candida spp 17.8%; S. agalactiae 5.6%; T.vaginalis 2.4%. In 50.3% of total adult cases neither bacterial vaginosis or presence of any sought microorganisms, was detected. In the adolescents group the most frequent detection was Candida spp with a 29.7%; bacterial vaginosis in 17.8%; followed by S. agalactiae 3.6%, T.vaginalis 2.4%. Also in this group on an important number of cases, 46.4%, none bacterial vaginosis or the presence of the sought microorganism were found. In some of the adult group, C. trachomatis (7/400 1.76%, U. urealyticum (209/340 61.4% and M. hominis (45/272 16.5% were detected. CONCLUSIONS: Bacterial vaginosis and Candida spp prevalence is important in both groups. The absence of N. gonorrhoeae and

  6. AGRICULTURIZACION E IMPACTOS AMBIENTALES EN EL PARTIDO DE NECOCHEA, PROVINCIA DE BUENOS AIRES, ARGENTINA - AGRICULTURIZATION AND ENVIRONMENTAL IMPACTS IN NECOCHEA COUNTY, BUENOS AIRES, ARGENTINA

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    Patricia Vazquez

    2017-04-01

    Full Text Available El modelo actual de producción agropecuaria de la región pampeana argentina, ha mostrado una tendencia a la agriculturización, con un efecto directo sobre la dinámica de los agroecosistemas, generando impactos ambientales con consecuencias sobre la base de los recursos naturales. Tomando el partido de Necochea inserto en la región, esta investigación propone analizar los cambios en el uso del suelo en dicho Partido entre 2003-2011, mediante sensores remotos, y estimar los impactos ambientales asociados con el proceso de agriculturización utilizando indicadores de sustentabilidad. Se realizó una clasificación supervisada sobre imágenes de satélite Landsat 5, se entrevistaron a informantes clave y se relevaron datos de terreno. Históricamente, el Partido ha sido netamente agrícola, y particularmente triguero; sin embargo en 2011 se evidencia que las áreas agrícolas, fundamentalmente sojeras, se incrementaron respecto de 2003 casi un 20% a expensas de las ganaderas. Los indicadores de sustentabilidad estimados para los dos años indican que impactos vinculados al riesgo de contaminación por agroquímicos, riesgo de intervención del hábitat e impactos sobre el ecosistema, fueron significativamente mayores en 2011. El trabajo realizado contribuye a diagnosticar el estado de situación ambiental del Partido y orientar la toma de decisiones tendiendo a la gestión ambiental de los agroecosistemas. ABSTRACT The current model of agricultural production in the Argentinean Pampas region tends to agriculturization, showing environmental impacts. This research aims to analyze changes in land use in Necochea County, which is part of such region, between 2003 and 2011, by remote sensing, and to estimate some the environmental impacts associated with the agriculturization. A supervised classification of Landsat 5 satellite images was conducted, key informants were interviewed, field data were surveyed and sustainability indicators which

  7. Aquatic insect assemblages of man-made permanent ponds, Buenos Aires city, Argentina.

    Science.gov (United States)

    Fontanarrosa, M S; Collantes, M B; Bachmann, A O

    2013-02-01

    Freshwater habitats are important elements within urban green space and they are endangered by various types of human activity. With the aim to increase the knowledge about species biodiversity in urban ecosystems, we characterised the assemblages of aquatic insects in four permanent man-made ponds in Buenos Aires city (Argentina) during a 1-year period. We recorded 32 species with Sigara spp. (Hemiptera) as the most abundant. The removal of aquatic vegetation from the studied ponds may have affected both the establishment and permanence of the insect community. Swimmers were the dominant group in the studied sites, followed by burrowers and sprawlers, and only a few strictly climbers were collected. Therefore, all sampled ponds were dominated by collectors (principally gatherers), secondarily by predators and only few shredders were detected, which was much affected by the removal of macrophytes. Non-parametric abundance indexes estimated a number of species very close to the observed number in each site. Conversely, the incidence indexes estimated more species because there were many more taxa present only in one sample than those represented by few individual in a sample. Our data provides some insights on the community of man-made ponds that can improve the management of these aquatic urban habitats. Considering that macrophytes affect animal assemblages due to their role as physical structures that increase the complexity or heterogeneity of habitats, they should not be removed by authorities in order to promote biodiversity.

  8. [Recent history: 12th International Conference on Cancer, Buenos Aires, Argentina, 1978].

    Science.gov (United States)

    Spinelli, Hugo

    2014-04-01

    Using the approaches of history of the present, this article recovers the discussions surrounding the 12th International Conference on Cancer carried out in Buenos Aires in 1978, in reaction to which Georges Périès organized a "counter-conference" in Paris. In order to understand this discussion, the political situation of the time is described, as is the state of human rights at the time in Argentina, the role of the media - in particular the newspapers La Nación and Clarín and the magazine Gente - and the institutional position adopted by the National Academy of Medicine, as expressed in a letter sent to the presidents of the primary scientific societies of the world. The letter is reprinted in this text as a documentary source, taken from Memoria: Año 1978 (Presidencia de Dr. José E. Rivarola) [Acta: Year 1978 (Presidency of Dr. José E. Rivarola)]. The framework of the discussion makes reference to science's social policy versus science's supposed neutrality and the role of scientific societies.

  9. Functional and nutraceutical legumes marketed in the metropolitan area of Buenos Aires, Argentina.

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    Julio A. Hurrell

    2016-07-01

    Full Text Available In this work, we analyzed data from ethnobotanical surveys of functional and nutraceutical legumes (Leguminosae commercialized in the metropolitan area of Buenos Aires, Argentina. The surveys took place in outlets of the general commercial circuit and the restricted circuits belonging to Bolivian and Chinese immigrants. We recorded the species, its products, local therapeutic uses, and available published data on biological activity and effects. Nineteen species were found: Arachis hypogaea var. hypogaea, Cicer arietinum, Glycine max, Lablab purpureus, Lens culinaris, Lupinus albus, L. mutabilis, Medicago sativa, Phaseolus lunatus, P. vulgaris, Pisum sativum, Prosopis alba, Tamarindus indica, Trifolium repens, Trigonella foenum-graecum, Vicia faba, Vigna angularis, V. radiata and V. unguiculata var. unguiculata. Most of these species (15 were found in the general commercial circuit, whereas the rest (4 only in the restricted commercial circuits of immigrants, including L. mutabilis, which deserves a wider diffusion. In most cases, the local uses assigned to a surveyed species correspond to the information available in the literature on the species’ biological activity and effects. This paper provides new insights for ethnobotanical studies and highlights the therapeutic relevance of legumes in the study area.

  10. Opiniones y representaciones sociales de varones sobre aborto en Buenos Aires, Argentina

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    Mónica Petracci

    Full Text Available Este artículo está basado en una investigación cualitativa cuyo objetivo fue explorar las opiniones de varones de 25 a 39 años de estratos socioeconómicos medios y populares, residentes en el Área Metropolitana de la Ciudad de Buenos Aires, Argentina (n: 30 acerca de la despenalización del aborto y sus representaciones sociales sobre el mismo. Los hallazgos han corroborado resultados previos y han aportado nuevos conocimientos. Se confirmó la ambivalencia de los discursos sobre el aborto, ya que primaron una opinión favorable a su despenalización, y una representación social fundada en un eje moral opuesto al aborto. De los resultados se desprende la necesidad de investigar los puntos de vista de los varones sobre los derechos de mujeres y varones, y de profundizar los sondeos de opinión a través de estudios cualitativos en los que se indaguen sus representaciones sociales en el campo de los derechos sexuales y reproductivos.

  11. Abortion in a restrictive legal context: the views of obstetrician-gynaecologists in Buenos Aires, Argentina.

    Science.gov (United States)

    Gogna, Mónica; Romero, Mariana; Ramos, Silvina; Petracci, Mónica; Szulik, Dalia

    2002-05-01

    In Argentina, unsafe abortions are the primary cause of maternal mortality, accounting for 32% of maternal deaths. During reform of the National Constitution in 1994, the women's movement effectively resisted the reactionary government/church position on abortion. Health professionals, including obstetrician-gynaecologists, played conflicting roles in this debate. This article presents results from a study carried out in 1998-1999 of the views of 467 obstetrician-gynaecologists from public hospitals in Buenos Aires and its Metropolitan Area, focus group discussions with 60 of them, and interviews with heads of department from 36 of the hospitals. The great majority believed abortion was a serious public health issue; that physicians should provide abortions which are not illegal; that abortion should not be penalized to save the woman's life, or in cases of rape or fetal malformations; and that women having illegal abortions and abortion providers should not be imprisoned. Some 40% thought abortion should not be penalized if it is a woman's autonomous decision. Those who were better disposed towards the de-penalization of abortion cited a combination of public health reasons and the need for social equity. The women's health and rights movement should do advocacy work with this professional community on women's needs and rights, given the prominent role they play in reproductive health care provision and in the public sphere.

  12. BIOMASA EN PLANTACIONES DE Eucalyptus viminalis Labill. DE LA PROVINCIA DE BUENOS AIRES, ARGENTINA

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    Paula Ferrere

    2008-01-01

    Full Text Available El presente trabajo se desarrolló en el oeste de la provincia de Buenos Aires, Argentina con el objetivo de ajustar funciones de biomasa de árboles individuales y determinar la biomasa en diferentes compartimientos de la planta y el sotobosque. Se identificaron rodales de Eucalyptus viminalis Labill. cuyas edades oscilaron entre 4 y 14 años. Se apearon 21 árboles con diámetros entre 9,2 y 32,5 cm. Se desarrollaron regresiones simples y múltiples y se estimó el volumen, la biomasa en ramas, hojas y fuste. Las ecuaciones de volumen de mejor comportamiento son basadas en modelos lineales en su forma normal, y el modelo más adecuado fue el que incorporó al d2 (R2 = 0,92. Para la estimación de la biomasa en hojas, ramas, copa y fuste se recomienda los modelos ln-ln que consideran el d y h o solo el d. El componente de la biomasa en hojas presentó una estimación más débil. La distribución de la biomasa en los individuos sigue el patrón de desarrollo que se encuentra en la bibliografía. La proporción de la biomasa en la copa disminuye con la edad, contrariamente a lo sucedido con el fuste.

  13. [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.

  14. 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

  15. ANAERÓBICO DE LOS EFLUENTES DE UN TAMBO DE LA PROVINCIA DE BUENOS AIRES, ARGENTINA

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    Claudia Dido

    2013-01-01

    Full Text Available El presente trabajo desarrolla una alternativa de saneamiento a los impactos negativos en el ambiente, causados por la intensificación del sistema de producción y el manejo inadecuado de los residuos de un tambo de 1050 vacas, perteneciente al partido de Trenque Lauquen (Buenos Aires, Argentina. Utilizando la tecnología de digestión anaeróbica, que permite la degradación biológica de la materia orgánica en un ambiente sin oxígeno, se propuso un sistema de tratamiento, que permite la valoración de los subproductos obtenidos a través de la generación de electricidad y biofertilizante. La metodología de trabajo incluyó el análisis de datos preliminares de digestión anaeróbica de estiércol vacuno, caracterización del residuo generado, diseño del sistema de tratamiento y análisis técnico económico del mismo. Este proyecto demuestra la factibilidad de alcanzar el saneamiento del tambo con beneficios energéticos, desarrollando una gestión sustentable de los recursos y el ambiente.

  16. Diapriinae Wasps (Hymenoptera: Diaprioidea: Diapriidae Associated with Ants (Hymenoptera: Formicidae in Argentina

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    Marta S. Loiácono

    2013-01-01

    Full Text Available We provide an overview of diapriid wasps associated with ants in Argentina and the diversity of interactions they have developed with their hosts. As a result, we report 16 species of nine genera of Diapriinae, two new geographic distributions, three new association records, illustrations, and photographs. We highlight myrmecophile symphylic species, with a high degree of integration with the host ants, adaptation being morphological and behavioral. A table with diapriid species and ant hosts is given.

  17. Air pollution biomonitoring in Argentina, application of neutron activation analysis to the study of biomonitors

    International Nuclear Information System (INIS)

    Pignata, M.L.; Pla, R.R.

    1999-01-01

    The assessment of baseline levels of atmospheric pollutants and the identification of polluted areas is a complex problem, as pollutant contents at a certain geographical location is usually a combination of contributions from various diverse sources, including long-range transport. Elemental chemical characterization of atmospheric pollutants is thus of great importance and Neutron Activation Analysis has proved to be a powerful technique for multielemental determination of trace elements in biomonitors and aerosols. The general objective of this project is to study the use of biomonitors, specially lichens, for evaluating pollutant levels over a wide geographic area of Argentina and for establishing baseline values and assessing time trends. Two lichen species (Usnea sp. and Ramalina ecklonii (Spreng.) Mey. and Flot) have been identified as suitable monitors of air pollution, with potential regional application at the central area of the country (province of Cordoba) and pilot studies have been initiated to test the practicability of sampling and sample collection. An area of approximately 40,000 km 2 will be covered by a sampling network, using in situ growing lichens. The distribution maps for the two selected species are already drawn and sampling of local soils will also be conducted. Current efforts at the Neutron Activation Analysis laboratory are put on assessing, for the selected lichen species, the influence of sample preparation methods on trace element concentrations. The use of other analytical techniques will allow the evaluation of the bioindicator chemical response and its relationship to different atmospheric quality levels. Source identification and apportionment will be done by statistical fingerprinting of the elemental concentrations, as sources of pollution are characterized by being composed of different mixtures of elements in different proportions. In this way and as a long-term objective, regional maps will be drawn showing the

  18. 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

  19. First molecular characterization of canine hepatozoonosis in Argentina: evaluation of asymptomatic Hepatozoon canis infection in dogs from Buenos Aires.

    Science.gov (United States)

    Eiras, Diego Fernando; Basabe, Julia; Scodellaro, Carla F; Banach, Diana B; Matos, María L; Krimer, Alejandro; Baneth, Gad

    2007-11-10

    Canine hepatozoonosis is an expanding tick-borne disease in Argentina. Hepatozoonosis was studied during 1 year in six dogs from the same household in Buenos Aires. Blood parasitemia with Hepatozoon gamonts was found in five dogs and all six were positive by PCR for Hepatozoon sp. Although the levels of parasitemia fluctuated during the year, no clinical signs of disease were detected during the follow up period. Amplification and sequencing of a 650 bases fragment of the 18S rRNA gene from all six dogs yielded fragments that were 99% identical to H. canis. The results of the partial 18S rRNA genotyping with the sub-clinical course of infection and lack of severe hematological abnormalities are compatible with clinical and molecular descriptions of Hepatozoon canis infection from other areas of the world. This is the first molecular characterization of Hepatozoon from Argentina.

  20. Arqueología y comunidad en el inmueble de la calle Defensa 1344, Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Odlanyer Hernández de Lara

    2017-01-01

    Full Text Available Se presenta una síntesis de las investigaciones arqueológicas en el sitio de la calle Defensa 1344, de la Ciudad Autónoma de Buenos Aires, Argentina. Se ofrece un breve panorama de la información arquitectónica del inmueble a partir de la cartografía disponible, lo que contribuyó a orientar las excavaciones arqueológicas. Se presentan algunas de las evidencias detectadas, tanto muebles como inmuebles, y las actividades desarrolladas con la comunidad para la difusión del patrimonio local. Ello conlleva a plantear estrategias de investigación en la arqueología urbana argentina y su articulación con la protección y difusión del patrimonio arqueológico.

  1. Human Papillomavirus Cervical Infection and Associated Risk Factors in a Region of Argentina With a High Incidence of Cervical Carcinoma

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    S. A. Tonon

    1999-01-01

    Full Text Available Objective: To assess the prevalence and potential risk factors associated with human papillomavirus (HPV cervical infection among women residing in a region of northeastern Argentina with a high incidence of cervical cancer.

  2. Intrathecal antibody production in two cases of yellow fever vaccine associated neurotropic disease in Argentina.

    Science.gov (United States)

    Pires-Marczeski, Fanny Clara; Martinez, Valeria Paula; Nemirovsky, Corina; Padula, Paula Julieta

    2011-12-01

    During the period 2007-2008 several epizootics of Yellow fever with dead of monkeys occurred in southeastern Brasil, Paraguay, and northeastern Argentina. In 2008 after a Yellow fever outbreak an exhaustive prevention campaign took place in Argentina using 17D live attenuated Yellow fever vaccine. This vaccine is considered one of the safest live virus vaccines, although serious adverse reactions may occur after vaccination, and vaccine-associated neurotropic disease are reported rarely. The aim of this study was to confirm two serious adverse events associated to Yellow fever vaccine in Argentina, and to describe the analysis performed to assess the origin of specific IgM against Yellow fever virus (YFV) in cerebrospinal fluid (CSF). Both cases coincided with the Yellow fever vaccine-associated neurotropic disease case definition, being clinical diagnosis longitudinal myelitis (case 1) and meningoencephalitis (case 2). Specific YFV antibodies were detected in CSF and serum samples in both cases by IgM antibody-capture ELISA. No other cause of neurological disease was identified. In order to obtain a conclusive diagnosis of central nervous system (CNS) infection the IgM antibody index (AI(IgM) ) was calculated. High AI(IgM) values were found in both cases indicating intrathecal production of antibodies and, therefore, CNS post-vaccinal YFV infection could be definitively associated to YFV vaccination. Copyright © 2011 Wiley Periodicals, Inc.

  3. Epidemiology of Epstein-Barr virus-associated pediatric lymphomas from Argentina.

    Science.gov (United States)

    Chabay, Paola; Preciado, María Victoria

    More than 90% of the population is infected by Epstein-Barr virus (EBV), which has sophisticatedly evolved to survive silently in B cells for the life of infected individuals. However, if the virus-host balance is disturbed, latent EBV infection could be associated with several lymphomas. The age at primary infection varies substantially worldwide, and exposure to EBV is likely to be due to socioeconomic factors. In Argentina, EBV infection is mostly subclinical and 90% of patients are seropositive by the age of 3 years; therefore, its epidemiological characteristics resemble those of an underdeveloped or developing population. EBV-positive Hodgkin lymphoma (HL) in young adults from developed populations has been attributed to delayed primary EBV infection as suggested by the association with recent mononucleosis development. EBV-associated Burkitt lymphoma and Hodgkin lymphoma in children from Argentina display frequencies similar to those observed in developed countries, whereas EBV presence in pediatric diffuse large B-cell lymphoma is slightly increased compared to those populations. However, EBV presence is statistically associated particularly with patients < 10 years of age in all three entities. Therefore, a relationship between low age of EBV seroconversion and B-cell lymphoma development risk could be suggested in children from Argentina. Copyright © 2015 Hospital Infantil de México Federico Gómez. Publicado por Masson Doyma México S.A. All rights reserved.

  4. 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

  5. The green spaces of public use in the city of Tandil, county of Buenos Aires, Argentina

    International Nuclear Information System (INIS)

    Ricci, Susana; Erbiti, Cecilia

    2004-01-01

    The aim of this study was to survey and diagnostically characterize the green public spaces in the city of Tandil (Pcia. Bs. As, Argentina). The multivariate analysis (PCA) employed shows the relationships among environmental components (vegetation type and condition, soil, sidewalks and water bodies), infrastructure (benches, playgrounds, lighting) and activities, which reveals relationships bound to green spaces (GS). It was also assessed the degree of association between GS and. population. The results pointed out that, even though the area belonging to squares and small open places, where 83% of the population is concentrated, does not comply with the required percentage stated by the regulations, larger GS (such as parks) influence positively on this estimated index, regarding its function large GS (30%) are bound to a tourist purpose the intermediate ones (52da) to a recreational environmental function, and the smaller ones (20%) are associated with recreational activities or with the urban design. We consider that this research contributes towards the GS characterization, what can be de useful in future green space planning. Besides, it revalues their double function: creative and ecological role in the urban environmental quality

  6. AGRICULTURIZACION E IMPACTOS AMBIENTALES EN EL PARTIDO DE NECOCHEA, PROVINCIA DE BUENOS AIRES, ARGENTINA - AGRICULTURIZATION AND ENVIRONMENTAL IMPACTS IN NECOCHEA COUNTY, BUENOS AIRES, ARGENTINA

    OpenAIRE

    Patricia Vazquez; Laura Zulaica; Belen Benavidez

    2017-01-01

    El modelo actual de producción agropecuaria de la región pampeana argentina, ha mostrado una tendencia a la agriculturización, con un efecto directo sobre la dinámica de los agroecosistemas, generando impactos ambientales con consecuencias sobre la base de los recursos naturales. Tomando el partido de Necochea inserto en la región, esta investigación propone analizar los cambios en el uso del suelo en dicho Partido entre 2003-2011, mediante sensores remotos, y estimar los impactos ambientales...

  7. 21Pb dating of sediments in a heavily contaminated drainage channel to the La Plata estuary in Buenos Aires, Argentina

    International Nuclear Information System (INIS)

    Di Gregorio, D.E.; Fernandez Niello, J.O.; Huck, H.; Somacal, H.; Curutchet, G.

    2007-01-01

    Concentrations of 21 Pb and 137 Cs in sediment samples collected from two cores at a drainage channel to the La Plata river estuary in Buenos Aires, Argentina, were measured using ultralow-background detection systems. The 21 Pb data were used to determine the rate of sediment accumulation of the sites. These results were correlated with some heavy metal (chromium and lead) concentrations of the samples in an attempt to characterize the historical input of contaminants due to the industrial development, which has taken place in this area over the last century. The 137 Cs measurements demonstrate that cesium dating is not adequate in regions of the southern hemisphere

  8. An approach to the study of financial consumption in the low-income sectors of Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Iara Nadina Hadad

    2017-09-01

    Full Text Available An approach is proposed on the study of financial consumption in the low-income sectors of Argentina. As mentioned in multiple research studies conducted in different Latin American countries, the study of this recent and widespread phenomenon demands to highlight some of the common places that have caused the characterization of the economic life of the popular sectors. We propose some theoretical guidelines to reconsider such consumption and analyze the results of our still ongoing investigation regarding consumption and indebtedness in the lower sectors of the metropolitan area of Buenos Aires.

  9. Y-CHROMOSOMAL STR HAPLOTYPE DIVERSITY IN A SAMPLE FROM THE METROPOLITAN AREA OF BUENOS AIRES (ARGENTINA/Diversidad de Haplotipos del cromosoma Y en una muestra del área metropolitana de Buenos Aires (Argentina

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    Maria Laura Parolin

    2012-11-01

    Full Text Available El objetivo de este trabajo fue analizar el origen de los haplotipos del cromosoma Y en una muestra poblacional del Área Metropolitana de Buenos Aires (AMBA, y comparar estos resultados con los obtenidos previamente a nivel mitocondrial. Se determinaron 17 marcadores Y-STRs en 85 donantes no emparentados. Un total de 85 haplotipos únicos fueron observados. La diversidad haplotípica  fue de 1,000+/-0.0018, y la diversidad genética media de 0,680+/-0,095. Los linajes paternos evidenciaron una homogeneidad genética de raíces Europeas (93%, procedentes principalmente de Italia y España. La contribución amerindia paterna asociada al sub-haplogrupo Q1a3a fue relativamente baja (6%. La menor proporción de haplotipos amerindios y el elevado número de linajes maternos (44% de ese origen, revela que ha habido un aporte diferencial por género en la historia de mestizaje de esa población. Se observó un único perfil E1b1a, el cual es predominante en  África subsahariana. Estos datos, conjuntamente con la información histórica y demográfica, nos permite afirmar que el bajo aporte amerindio y subsahariano observado en  la muestra del AMBA, sería el resultado de las migraciones recientes, iniciadas a mediados del siglo XX, principalmente desde el norte de Argentina y de países limítrofes de elevada composición nativa y, en menor medida, africana. Abstract The aim of this work was to analyze the origin of Y-chromosome haplotypes in a sample from Buenos Aires Metropolitan Area (BAMA, and compare these results with those obtained at a mitochondrial level. In order to reach this objective, 17 Y-STRs were determined from 85 unrelated blood donors. A total of 85 unique haplotypes were observed. The haplotype diversity was 1.000+/-0.0018, and the average genetic diversity 0.680+/-0.095. Paternal lineages showed a genetic homogeneity of European roots (93%, mainly from Italy and Spain. Amerindian paternal contribution associated to sub

  10. Diatomeas marinas de aguas costeras de la provincia de Buenos Aires (Argentina.: III Géneros potencialmente nocivos Asterionellopsis, Cerataulina, Ceratoneis y Leptocylindrus Marine diatoms from Buenos Aires coastal waters (Argentina: Ill Potentially harmful genus Asterionellopsis,Cerataulina, Ceratoneis y Leptocylindrus

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    INÉS SUNESEN

    2007-12-01

    Full Text Available El presente trabajo está abocado al estudio morfológico, taxonómico y distribucional de las especies de diatomeas pertenecientes a los géneros Asterionellopsis, Cerataulina, Ceratoneis y Leptocylindrus halladas en aguas costeras marinas de la provincia de Buenos Aires, Argentina. Las muestras planctónicas fueron colectadas en San Clemente del Tuyú, Santa Teresita, La Lucila del Mar, Mar de Ajó, Nueva Atlantis, Pinamar y Villa Gesell, entre noviembre de 1994 y septiembre de 2000. Material sin tratar y tratado fue analizado con microscopio óptico y microscopio electrónico de barrido. Seis taxa correspondientes a los géneros mencionados fueron determinados, de los cuales Cerataulina dentata es citada por primera vez para Argentina y Leptocylindrus minimus es citada por primera vez para el área costera de la provincia de Buenos Aires. Todas las especies reportadas como nocivas no toxígenas para otras áreas geográficas fueron encontradas. Cerataulina pelágica, Ceratoneis closterium y Leptocylindrus minimus, componentes ocasionales del plancton del área siempre en bajas densidades, no fueron nunca asociadas a episodios de floración. Asterionellopsis glacialis, componente habitual del plancton, fue causante de discoloraciones nocivas para el turismo y las actividades recreacionalesThe present work is devoted to the morphological, taxonomic, and distributional study of the diatom species belonging to the genera Asterionellopsis, Cerataulina, Ceratoneis and Leptocylindrus found in the marine coastal waters of Buenos Aires Province, Argentina. Planktonic samples were collected from November 1994 to September 2000 at San Clemente del Tuyú, Santa Teresita, La Lucila del Mar, Mar de Ajó, Nueva Atlantis, Pinamar and Villa Gesell. Raw and cleaned samples were analysed with light and scanning electron microscopy. Six taxa of the mentioned genera were determined, of which Cerataulina dentata is reported for the first time for Argentina and

  11. Condiciones sanitarias de los comedores comunitarios del conurbano de Buenos Aires, Argentina

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    Arango Julia

    1997-01-01

    Full Text Available Debido a la importancia que la inocuidad de los alimentos entraña para la salud pública, se procuró determinar la calidad microbiológica de los alimentos que consumen los usuarios de los comedores comunitarios del conurbano de Buenos Aires, Argentina. Se trata de un estudio descriptivo, cuyo universo lo conformaron tres municipios con índices medianos y altos de pobreza, de los que se extrajo al azar una muestra de 52 comedores. La información se recolectó desde abril de 1994 hasta abril de 1995 inclusive, por medio de encuestas, observaciones directas y análisis microbiológicos del agua y los alimentos servidos. Los análisis del agua y los alimentos se ajustaron, respectivamente, a las recomendaciones del Código Alimentario Argentino y de la Comisión Internacional de Especificaciones Microbiológicas para Alimentos. Los resultados se interpretaron según los valores para alimentos cocidos acordados por el Grupo de Trabajo de Control de Alimentos. La parte microbiológica del estudio mostró que en 28 (54% de los comedores la comida o el agua era inadecuada y en 11 (21%, ambas eran inadecuadas. Bacillus cereus fue la bacteria patógena que se encontró con mayor frecuencia en los alimentos analizados. Los factores significativamente asociados con condiciones microbiológicas insatisfactorias de las comidas y el agua fueron no desinfectar el agua (P = 0,009, la falta de higiene en el ambiente (P = 0,03, la presencia de roedores e insectos (P = 0,05, el sistema de provisión de materias primas (P = 0,01 y un número de usuarios menor de 100 (P = 0,008. Se concluyó que la desinfección del agua y la limpieza general de los comedores son medidas que pueden implantarse por medio de intervenciones educativas en materia de higiene y manipulación de alimentos dirigidas a los encargados y empleados de los comedores. Los resultados obtenidos también apoyan la conveniencia de incluir la evaluación sanitaria de los alimentos entre los

  12. "We talk of AIDS because we love life": a stakeholder assessment of HIV/AIDS organizations in Buenos Aires, Argentina.

    Science.gov (United States)

    Spaulding, Alicen B; Brieger, William R

    This stakeholder assessment of HIV/AIDS service providing institutions in Argentina offers insights into the HIV/AIDS crisis in Spanish-speaking Latin America from an institutional level and makes recommendations for strengthening the work and functioning of these institutions. This stakeholder assessment was conducted to determine how HIV/AIDS prevention and management in Argentina affects and is affected by relevant HIV/AIDS institutions. Semi-structured qualitative interviews were conducted with 13 key leaders of organizations working in HIV/AIDS prevention in Buenos Aires including non-governmental, governmental, and academic institutions. Analyses of interviewee comments are presented according to four major themes: network connections, program resources, perceptions of success, and challenges. Key findings include the need for strengthening formal networks, increasing the involvement of other non-AIDS related social institutions in promoting HIV prevention, finding more sustainable funding options, working more effectively with the public sector to create policies and regulations favorable to the HIV/AIDS field, and addressing the lack of perceived susceptibility to HIV/AIDS in Argentine culture. From leaders' comments, recommendations are made for strengthening the HIV/AIDS network among key institutions including adapting the UNAIDS "Three Ones" principal to create one crosssector office responsible for coordinating HIV/AIDS work, formalizing agreements with institutions outside of Buenos Aires, increasing the role of schools in HIV/AIDS awareness, and designing programs that address lack of perceived susceptibility to HIV/AIDS among Argentines.

  13. Control of Aedes aegypti with temephos in a Buenos Aires cemetery, Argentina Control de Aedes aegypti con temefós en un cementerio de Buenos Aires, Argentina Controle de Aedes aegypti com temefós em cemitério de Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Darío Vezzani

    2004-10-01

    Full Text Available The efficacy of a larvicide, temephos, for controlling Ae. aegypti was evaluated in a cemetery in Buenos Aires, Argentina. Breeding sites decreased from 18.4% in the first study period (Nov 1998 to May 1999, without temephos to 2.2% in the second period (Nov 1999 to May 2000, two applications, and to 0.05% in the third one (Nov 2000 to May 2001, five applications. Ovitraps with eggs decreased from 17% in the first period to 5.8% in the second period, and to 2.9% in the third one. Results suggest that, in Buenos Aires, Ae. aegypti populations are highly susceptible to temephos. It is recommended to limit the use of temephos to prevent potential epidemics rather than for routine control.Se evaluó la eficacia de un larvicida, temefós, para controlar Ae. aegypti en un cementerio de Buenos Aires, Argentina. Los criaderos descendieron de 18,4% en el primer periodo de estudio (Nov 1998 a May 1999, sin temefos a 2,2% en el segundo (Nov 1999 a May 2000, dos aplicaciones, y a 0,05% en el tercero (Nov 2000 a May 2001, cinco aplicaciones. Las ovitrampas con huevos disminuyeron de 17% en el primer periodo a 5,8% en el segundo, y a 2,9% en el tercero. Los resultados sugieren que, en Buenos Aires, las poblaciones de Ae. aegypti son altamente susceptibles al temefós. Es recomendable limitar su uso para prevenir eventuales epidemias y no para el control rutinario.Avaliou-se a eficácia de um larvicida, temefós, para controlar Ae. aegypti em um cemitério de Buenos Aires, Argentina. Os criadouros reduziram de 18,4% no primeiro período de estudo (nov de 1998 a maio de 1999, sem temefós para 2,2% no segundo (nov de 1999 a maio de 2000, duas aplicações, e para 0,05% no terceiro (nov de 2000 a maio de 2001, cinco aplicações. As. ovitrampas com ovos diminuíram de 17% no primeiro período para 5,8% no segundo e para 2,9% no terceiro. Os resultados sugerem que, em Buenos Aires, as populações de Ae. aegypti são altamente susceptíveis ao temefós.

  14. Environmental characteristics of the cemeteries of Buenos Aires City (Argentina and infestation levels of Aedes aegypti (Diptera: Culicidae

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    Vezzani Darío

    2001-01-01

    Full Text Available Cemeteries with many water-filled containers, flowers, sources of human blood, and shade are favorable urban habitats for the proliferation of Aedes aegypti, a vector of yellow fever and dengue. A total of 22,956 containers was examined in the five cemeteries of the city of Buenos Aires, Argentina. The vector was found in four cemeteries that showed an average infestation level of 5.5% (617 positive out of 11,196 water-filled containers. The four cemeteries positive for Ae. aegypti showed significantly different (p<0.01 infestation levels. Vegetation cover and percentage of infestation were significantly correlated (p<0.01, but neither cemetery area nor number of available containers were significantly related to the proportion of positive vases. Our results suggest that the cemeteries of Buenos Aires represent a gradient of habitat favorableness for this vector species, some of which may act as foci for its proliferation and dispersal.

  15. Estacionalidad poblacional de los estados inmaduros de Aedes albifasciatus (Diptera: Culicidae en la provincia de Buenos Aires, Argentina

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    Juan José García

    2000-06-01

    Full Text Available Aedes albifasciatus es un mosquito neotropical ampliamente distribuído en Argentina. Presenta una biología típica de mosquitos de inundación. Sus estadíos larvales se desarrollan en zonas deprimidas que se inundan temporariamente. Durante dos años se realizó un estudio de una población de A. albifasciatus en un área cercana a la Plata, provincia de Buenos Aires, Argentina. Se realizaron muestreos semanales entre mayo de 1996 y abril de 1998. En cada fecha de muestreo se tomaron 100 cucharones de 300 cc. Las eclosiones de mosquitos numéricamente elevadas se produjeron cuando las precipitaciones inundaron el ambiente entre un 90 y 100 % de su capacidad luego de permanecer seco varios días o semanas. En el período estival, las larvas requirieron entre seis y ocho días para alcanzar el estado adulto (temperatura media 24.6 °C en enero y 21.3 °C en febrero. En otoño-invierno, 43 días (temperatura media: 10.6 °C y en primavera 22 días con una temperatura media de 15.5 °C.Aedes albifasciatus, a floodwater mosquito, is widely distributed in freshwater habitats in Argentina. At high population densities it is an important pest in urban areas. A two year study was conducted in a natural population of A. albifasciatus around La Plata area, Buenos Aires province, Argentina. The breeding site was weekly sampled from May, 1996 to April, 1998. Immature stages of A. albifasciatus were collected with a standard 300 ml dipper. Each sample unit consisted of 100 dipper. Highest densities of mosquito larvae occurred when the breeding site was flooded among 90 and 100 % of its capacity after remaining dry for several days or weeks. The larvae required between six and eight days to become adult in summer (temperature mean 24.6 °C in January and 21.3 °C in February. In autumn-winter, 43 days (temperature mean 10.6 °C and in spring 22 days (temperature mean 15.5 °C.

  16. Fasciola hepatica infection and association with gastrointestinal parasites in Creole goats from western Argentina.

    Science.gov (United States)

    Cuervo, Pablo; Sidoti, Laura; Fantozzi, Cecilia; Neira, Gisela; Gerbeno, Leticia; Mera y Sierra, Roberto

    2013-01-01

    Goats, called “the cow of the poor”, are the livestock species with the most significant population growth worldwide in recent years. Gastrointestinal parasitism constitutes one of the main constraints to its outdoor and extensive breeding in temperate and tropical countries. Despite a Creole goat population of nearly 4 million heads, local reports on parasitological prevalence are scarce, and while Fasciola hepatica infection is spread all over Argentina, the goat is usually neglected as a reservoir and economic losses are not considered. To evaluate gastrointestinal parasitism prevalence and associations between parasite genera and species, with emphasis on fascioliasis, Creole goats from the plateau and Andean regions from western Argentina were investigated by coprological techniques, and associations were statistically assessed. Eighty-five percent (85%) of the animals harbored one or more parasite types, while 46% showed mixed infections. Significant positive associations between F. hepatica + Strongyle eggs, Eimeria sp. + Nematodirus sp. and Nematodirus sp. + Trichuris ovis were detected. Further studies are required to define the causality of these associations and their relevance in epidemiology. F. hepatica is rarely considered as goat parasite in the country, but a 33% prevalence poses an interrogation on the role goats play on the transmission and dissemination of this zoonotic trematode.

  17. The Gap in Knowledge of Clinical Practice Guidelines by Mental Health Residents in Buenos Aires (Argentina

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    Javier Fabrissin

    2014-05-01

    Full Text Available The aim of this pilot study was to evaluate if the residents of psychiatry and clinical psychology from the city of Buenos Aires knew any of the existing mental health Clinical Practice and Treatment Guidelines (CPTGs. We asked residents their opinion about CPTGs and, also, if they followed their recommendations in clinical practice. We asked 59 mental health residents (28 physicians and 29 psychologists with different years of clinical training to fill a questionnaire to know their opinion about CPTGs and also if they follow the CPTG recommendations in their clinical practice. We found that 79.31% of residents did not know any CPTG. Eighty percent of the residents who did know any CPTG have a positive opinion about CPTGs. Finally, the American Psychiatric Association Guidelines were the most known CPTGs. The authors emphasize the need for a clinical guidelines diffusion policy in Buenos Aires city and particularly as a clinical and training resource for mental health residents.

  18. 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

  19. ELA-DRA polymorphisms are not associated with Equine Arteritis Virus infection in horses from Argentina.

    Science.gov (United States)

    Kalemkerian, P B; Metz, G E; Peral-Garcia, P; Echeverria, M G; Giovambattista, G; Díaz, S

    2012-12-01

    Polymorphisms at Major Histocompatibility Complex (MHC) genes have been associated with resistance/susceptibility to infectious diseases in domestic animals. The aim of this investigation was to evaluate whether polymorphisms of the DRA gene the Equine Lymphocyte Antigen is associated with susceptibility to Equine Arteritis Virus (EAV) infection in horses in Argentina. The equine DRA gene was screened for polymorphisms using Pyrosequencing® Technology which allowed the detection of three ELA-DRA exon 2 alleles. Neither allele frequencies nor genotypic differentiation exhibited any statistically significant (P-values=0.788 and 0.745) differences between the EAV-infected and no-infected horses. Fisher's exact test and OR calculations did not show any significant association. As a consequence, no association could be established between the serological condition and ELA-DRA. Copyright © 2012 Elsevier Ltd. All rights reserved.

  20. Comments on Environmental and Sanitary Aspects of the Scorpionism by Tityus trivittatus in Buenos Aires City, Argentina

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    Adolfo Rafael de Roodt

    2014-04-01

    Full Text Available Deaths by venomous animals are medical emergencies that can lead to death and thus constitute sanitary problems in some regions of the world. In the South of America, the accidents by these animals are a common sanitary problem especially in warm, tropical or subtropical regions, related with rural work in several countries. Argentina is located in the extreme South of South America and a minor part of the continental surface is in tropical or subtropical regions, where most of the accidents by venomous animals happen. However, in the big cities in the center and South of the country, with no relation to rural work, scorpionism, mostly due to the synanthropic and facultative parthenogenetic scorpion Tityus trivittatus, has become a sanitary problem in the last few decades. This scorpion is present in the biggest cities of Argentina and in the last decades has killed over 20 children in provinces of the center and north of the country, mostly in big cities. In addition, it seems that this species is growing and spreading in new regions of the cities. In this revision, some characteristics of this scorpion regarding its habitat, spreading in Buenos Aires city, combat measures and available treatments are discussed.

  1. 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.

  2. The challenges of managing protected areas in tourist spaces: Samborombón Bay [Buenos Aires, Argentina

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    María Cecilia Rigonat

    2012-01-01

    Full Text Available The Samborombón Bay [province of Buenos Aires, Argentina] is an interfase between the river-sea area [the mouth of the Río de la Plata in the Argentine Sea] and the land. The southern coastal strip of the bay has been systematically marginalized by the valuation processes which have dominated the region of the Pampas. However, various protected areas have been set up over the last 30 years, within different public [federal, provincial, municipal] and private [NGOs] jurisdictions. This paper seeks to stress the problems which have arisen around the territory's valuation and the management of the said protected areas, within the framework of the dominant economic activities [cattle-raising, fishing and tourism

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

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    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

  4. As exposições e seus publicos : a paleontologia no Museo de La Plata (Provincia de Buenos Aires, Argentina)

    OpenAIRE

    Sandra Elena Murriello

    2006-01-01

    Resumo: Esta tese pretende ser uma contribução à compreensão do diálogo estabelecido nas instituições museais com seus múltiplos visitantes, o que vem permitindo a sobrevivência, quando não a transformação, e consolidação dos museus como espaços culturais valorizados socialmente. Em particular, analiso a relação estabelecida entre o público do Museo de La Plata (Província de Buenos Aires, Argentina) e suas exposições paleontológicas. Essas exposições e suas valiosas coleções são as mais procu...

  5. 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

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    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

  6. Consumo de medicamentos y equidad en materia de salud en el Área Metropolitana de Buenos Aires, Argentina

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    Valeria Alonso

    2003-06-01

    Full Text Available OBJETIVO: Medir la equidad manifestada por los patrones de consumo de medicamentos en el Área Metropolitana de Buenos Aires, Argentina, a la luz de las transformaciones operadas en el mercado farmacéutico argentino después de la desregulación de la economía en 1991. METODOLOGÍA: Se procesaron y analizaron fuentes estadísticas secundarias: se utilizaron dos encuestas domiciliarias que contenían un módulo sobre la utilización de servicios de salud y gastos asociados diseñado por el Ministerio de Salud y aplicado al Área Metropolitana de Buenos Aires en 1989 y 1995. RESULTADOS: Se constató un aumento del carácter socialmente regresivo del gasto de bolsillo en medicamentos entre 1989 y 1995, en un mercado farmacéutico que ha duplicado sus precios medios en el nuevo contexto de liberación de precios y apertura de las importaciones. Esta regresión se manifestó en el crecimiento del gasto directo de la compra de medicamentos, el aumento de la parte correspondiente a los medicamentos en la estructura del gasto privado para la salud y el incremento desigual del peso relativo de dicho gasto en los ingresos familiares. CONCLUSIONES: El gasto de bolsillo en medicamentos resulta un indicador eficiente de equidad financiera para el estudio de la protección de la población urbana argentina frente al riesgo de enfermar, y puede contribuir a la adecuación del marco regulador del mercado farmacéutico, mediante la incorporación de criterios sociales de evaluación a la ecuación farmacológica de seguridad y eficacia terapéutica.

  7. Susceptibility trends of Bacteroides fragilis group isolates from Buenos Aires, Argentina Tendencias en el perfil de sensibilidad de aislamientos del grupo Bacteroides fragilis obtenidos en Buenos Aires, Argentina

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    L. Fernández Canigia

    2007-09-01

    Full Text Available The aim of this study was to analyze the susceptibility trends to seven antibiotics of Bacteroides fragilis group isolates based on three survey studies performed by the Committee of Anaerobic Bacteria between 1989 and 2002. Fifty three, 82 and 65 B. fragilis group isolates were collected during each period. The antimicrobial agents included were: ampicillin, ampicillin-sulbactam (2:1, cefoxitin, piperacillin, imipenem, clindamycin, and metronidazole. Minimal inhibitory concentrations (MICs were determined according to the reference agar dilution method described by the Clinical and Laboratory Standards Institute (CLSI, formerly NCCLS. The most active antibiotics for B. fragilis and non- B. fragilis species throughout the three periods were: imipenem with 99.1 and 100% of activity, respectively, and metronidazole with 100% of activity. The susceptibility to ampicillin-sulbactam showed a decrease, from 100% to 90.3% and to 82.4 % in the last period, for both B. fragilis and non-B. fragilis species, respectively. The overall susceptibility rates for cefoxitin, piperacillin, and clindamycin were significantly different between B. fragilis and non-B. fragilis species (84.2% vs. 56.5%; 85.9% vs. 66.7% and 88.8% vs. 64.7%, respectively, pEl objetivo de este estudio fue evaluar las variaciones en el perfil de sensibilidad frente a siete antimicrobianos de aislamientos del grupo Bacteroides fragilis, mediante el análisis de tres relevamientos realizados por la Subcomisión de Bacterias Anaerobias de la Asociación Argentina de Microbiología (años 1989-1991, 1996-1998 y 1999-2002. En los citados períodos se recolectaron 53, 82 y 65 aislamientos del grupo B. fragilis. Se evaluó la actividad de: ampicilina, ampicilina-sulbactama (2:1, cefoxitina, piperacilina, imipenem, clindamicina y metronidazol. La concentración inhibitoria mínima (CIM se determinó utilizando el método de dilución en agar, según las normas del Clinical and Laboratory

  8. Agallas de insectos de la región Rioplatense, Buenos Aires, Argentina

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    Nicolás KUZMANICH

    2015-01-01

    Full Text Available Las agallas son estructuras anormales que se desarrollan en las plantas como respuesta a la acción de un agente inductor. La fauna de insectos cecidógenos de la región Neotropical es poco conocida en comparación a otras regiones, y en la Argentina, los registros son particularmente incompletos. Con el objetivo de identificar y caracterizar los insectos cecidógenos presentes en la región Rioplatense, se realizaron relevamientos a campo y revisión bibliográfica. En La Plata, Punta Lara, Punta Indio, isla Paulino, Bernal, isla Martín García e isla Oyarvide se recorrieron transectas al azar de una hora por visita. Las agallas se recolectaron para obtención de adultos, que luego se identificaron empleando claves taxonómicas y material de referencia. Se listaron 33 morfoespecies de insectos cecidógenos sobre 26 especies vegetales, de las cuales 8 son interacciones registradas por primera vez de la Argentina y en 3 especies vegetales se registra por primera vez la presencia de agallas. La mayoría de los insectos inductores pertenecieron al Orden Hemiptera y entre ellos, el grupo más frecuente fue Psylloidea. Las familias vegetales Asteraceae y Anacardiaceae concentraron la mayor riqueza de especies cecidógenas. El 55% de las agallas fueron foliares, y el 33% fueron clasificadas morfológicamente como globoides. Se destaca la necesidad de continuar estos estudios en la Argentina.

  9. NMVOCs speciated emissions from mobile sources and their effect on air quality and human health in the metropolitan area of Buenos Aires, Argentina

    Science.gov (United States)

    D'Angiola, Ariela; Dawidowski, Laura; Gomez, Dario; Granier, Claire

    2014-05-01

    Since 2007, more than half of the world's population live in urban areas. Urban atmospheres are dominated by pollutants associated with vehicular emissions. Transport emissions are an important source of non-methane volatile organic compounds (NMVOCs) emissions, species of high interest because of their negative health effects and their contribution to the formation of secondary pollutants responsible for photochemical smog. NMVOCs emissions are generally not very well represented in emission inventories and their speciation presents a high level of uncertainty. In general, emissions from South American countries are still quite unknown for the international community, and usually present a high degree of uncertainty due to the lack of available data to compile emission inventories. Within the Inter-American Institute for Global Change Research (IAI, www.iai.int) projects, UMESAM (Urban Mobile Emissions in South American Megacities) and SAEMC (South American Emissions, Megacities and Climate, http://saemc.cmm.uchile.cl/), the effort was made to compute on-road transport emission inventories for South American megacities, namely Bogota, Buenos Aires, Lima, Sao Paulo and Santiago de Chile, considering megacities as urban agglomerations with more than 5 million inhabitants. The present work is a continuation of these projects, with the aim to extend the calculated NMVOCs emissions inventory into the individual species required by CTMs. The on-road mobile sector of the metropolitan area of Buenos Aires (MABA), Argentina, accounted for 70 Gg of NMVOCs emissions for 2006, without considering two-wheelers. Gasoline light-duty vehicles were responsible for 64% of NMVOCs emissions, followed by compressed natural gas (CNG) light-duty vehicles (22%), diesel heavy-duty vehicles (11%) and diesel light-duty vehicles (7%). NMVOCs emissions were speciated according to fuel and technology, employing the European COPERT (Ntziachristos & Samaras, 2000) VOCs speciation scheme for

  10. Agallas de insectos de la región Rioplatense, Buenos Aires, Argentina

    OpenAIRE

    Nicolás KUZMANICH; Alejandra ALTAMIRANO; Adriana SALVO

    2015-01-01

    Las agallas son estructuras anormales que se desarrollan en las plantas como respuesta a la acción de un agente inductor. La fauna de insectos cecidógenos de la región Neotropical es poco conocida en comparación a otras regiones, y en la Argentina, los registros son particularmente incompletos. Con el objetivo de identificar y caracterizar los insectos cecidógenos presentes en la región Rioplatense, se realizaron relevamientos a campo y revisión bibliográfica. En La Plata, Punta Lara, Punta I...

  11. O´Higgins 2319: departamentos transformables en Belgrano (1940-1941, Buenos Aires, Argentina

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    Gonzalo Fuzs

    2014-07-01

    Full Text Available The changeable apartments in Belgrano is the first apartment building designed and built by Juan Kurchan and Jorge Ferrari Hardoy, members of the Austral Group in Argentina, who returned home after having lived in Paris where they worked in Le Corbusier’s office. This unknown and radical project was published in August 1942 in the journal Tecné. This article intends to describe the design intentions of the architects, which materialized some of the Group’s endeavours. These explorations are a reflection of the work carried out in the Rue de Sèvres and of the Parisian context of the late nineteen-thirties.

  12. Nuevos registros de squamata (reptilia para el pleistoceno superior del norte de la provincia de Buenos Aires, Argentina

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    Federico Agnolin

    2011-01-01

    Full Text Available En el presente artículo son reportados ejemplares de diversos taxones de reptiles escamados fósiles procedentes de la base de la Formación Luján (Pleistoceno Superior, en la localidad fosilífera de Merlo, provincia de Buenos Aires, Argentina. Entre los ejemplares registrados se reconoce el primer registro fósil para el género y especie Anops kingii (Amphisbaenidae; asimismo se reporta la presencia de especies indeterminadas de los géneros Homonota (Gekkonidae y Liolaemus (Liolaemidae. La asociación conjunta de estos tres taxones hoy en día no se encuentra representada en el norte de la provincia de Buenos Aires, siendo la región geográficamente más cercana en donde encuentran una superposición en su distribución el Partido de Balcarce, ubicado en el extremo Sureste de la provincia y alejado unos 600 kilómetros al sur de la localidad fosilífera de Merlo. La presencia conjunta de estos tres reptiles se encuentra de acuerdo con la posible existencia de un pulso árido y frío, tal como ha sido propuesto con anterioridad para porción más inferior del Pleistoceno Superior en la provincia de Buenos Aires.

  13. Results of RELID study 2014-Buenos Aires, Argentina retrospective evaluation of lens injuries and dose

    International Nuclear Information System (INIS)

    Papp, C.; Touzet, R.; Romano-Miller, M.; Descalzo, A.; Michelin, S.; Molinari, A.; Rossini, A.; Di Giorgio, M.; Plotkin, C.; Bodino, G.; Esperanza, G.

    2017-01-01

    High levels of scatter radiation in catheterization laboratories may lead to posterior subcapsular opacities in the lens of the staff. The international Retrospective Evaluation of Lens Injuries and Dose (RELID) was performed in Argentina for the first time in 2010 in the context of the congress of the Latin American Society of Interventional Cardiology (SOLACI) and recently, in 2014, was carried out for the second time (SOLACI-CACI 2014). The 2014 study included 115 participants: interventional cardiologists, technicians and nurses. Posterior subcapsular lens changes typical of ionizing radiation exposure were found in 91.5% of interventional cardiologists, in 77% of technicians and in 100% of nurses, according to the Merriam-Focht scale. This RELID study (Argentina 2014) has particular importance since it allowed the follow-up of 10 professionals evaluated in 2010. The results obtained in the study population highlight the importance of the availability and proper use of the elements of radiation protection, as well as staff training. (authors)

  14. Environmental stable isotope of the 'Sistema de las Encadenadas de Chascomus', Buenos Aires, Argentina

    International Nuclear Information System (INIS)

    Dapena, C; Miretzky, P; Panarello, H.O; Fernandez Cirelli, A

    2001-01-01

    The Sistema de las Encadenadas de Chascomus (35 o 30'S-35 o 34'S; 58 o 17'W-58 o 44'W) lies in the geomorphologic unit called Pampa Deprimida in the Buenos Aires province, Argentina. The Pampa Deprimida has wet climate, with mean annual precipitation about 900 mm, mean annual temperature ranging 13-16 o C and alternating of multiannual dry and humid periods (Iriondo and Drago, 2000). Although rainfall is higher in summer, the precipitation-evaporation balance is negative for this season. This system is located in the Salado River drainage basin, a sedimentary basin where Cretaceous, Tertiary, Plio- Pleistocene and Pleistocene sediments are superimposed over the Precambrian crystalline basement. The Pampeano Plio-Pleistocene sediments contain the aquifer unit and consist in a succession of silt-stones and fine sandstones with a relatively homogeneous mineralogical composition, consisting primarily of plagioclase, quartz and volcanic glass (Teruggi, 1957). Such sediments have generally been regarded as eolic in origin, being derived from volcaniclastic deposits outcropping in the Andes over 1000 km to the west, although localized fluvial and mass movement processes probably redistributed the material to a large extent once accumulated in the Pampas (Kemp and Zarate, 2000). The Sistema de Las Encadenadas de Chascomus is formed by interconnected shallow lakes being the principal ones Vitel (13 km 2 ), Chascomus (30 km 2 ), Manantiales and Adela (21 km 2 ), El Burro (10,7 km 2 ),Chis Chis (14.8 km 2 ), Las Tablillas (16,7 km 2 ) and Las Barrancas (8,85 km 2 ). The Horqueta stream connects the last one, and in fact the whole system, with the Salado River. Pampasic lakes are shallow alkaline systems, with nearly continuous vertical mixing that promotes a high concentration of suspended particulate matter and low water transparency. Water column is almost always thermally homogeneous, saturated with dissolved oxygen and with a high content of dissolved organic matter

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

    Directory of Open Access Journals (Sweden)

    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.

  16. Flesh flies species (Diptera: Sarcophagidae from a grassland and a woodland in a Nature Reserve of Buenos Aires, Argentina

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    Pablo R Mulieri

    2008-09-01

    Full Text Available Temporal changes of flesh flies abundance were simultaneously recorded at monthly intervals during a year in a woodland and in a grassland at the "Reserva Ecológica Costanera Sur" (RECS, Buenos Aires city, Argentina. Samples were taken at monthly intervals (February 2004-January 2005. Hourly captures of adult flies (10:00 am - 04:00 pm were taken each sampling date with a hand net. Temperature was recorded at each hourly capture. The baits used were 200 g of rotten cow liver and 200 g of fresh dog faeces. Records of abundance included only species whose abundance was ≥30 individuals accumulated during the whole sampling period. Considering overall abundance, a non-parametric Chi-square test was used to estimate deviations of an expected habitat and bait preference ratios of 1:1. The same criterion was applied to include species in a contingency table to describe their seasonality. The final matrix included four species whose associations to seasons were analyzed by using a Correspondence Analysis. To normalize the data, a log 10(n+1 transformation was applied prior to the analysis of correlation. Pearson product-moment correlations were used to examine the relationship between flesh-fly abundance with temperature and habitat preference. The entire sample accumulated 1 305 individuals and 18 species. The flies were more abundant in the grassland than in the woodland. Microcerella muehni, Oxysarcodexia paulistanensis, O. varia and Tricharaea (Sarcophagula occidua exhibited the higher relative abundance, representing the remaining species less than 8 % of the entire sample. Most of the recorded species showed preference for faces as bait. Concerning the dominant species, all of them but M. muehni, a suggestively termophobic species, prevailed in late spring-summer. The observed species arrangement at both sites indicates low species diversity and equitability and high information per individual in the average. The referred community traits would

  17. Training on Radioisotopes Techniques and Radioprotection Aspects at The School of Pharmacy and Biochemistry of the Buenos Aires University (Argentina)

    International Nuclear Information System (INIS)

    Bergoc, R. M.; Rivera, E. S.; Bomba, A. M.

    2004-01-01

    The use of ionizing radiation sources and radioisotopes in Argentina takes place at more than 1700 facilities, which operate in Nuclear Medicine, in telecobaltherapy, in Industry, in Biochemistry, and in research. All of these centers have one or more professional trained in the specific field of radioprotection and they have been authorized by the Nuclear Regulatory Authority. At the School of Pharmacy and Biochemistry of the Buenos Aires University, Argentina, we consider of great interest to teach radioisotopes methodology at different levels, to harmonize the use of these methodologies with environmental preservation and to provide education and training on radioprotection. Currently, the school offers five different courses in all of which the radioprotection is one of the most important subjects: 1) Course on Methodology of Radioisotopes for students at the undergraduate level, in the Biochemistry Career (140 hrs). Since 1960, more than 6000 students have passed their examinations. 2) Course on Methodology of Radioisotopes for post-Graduates in Biochemistry, Biology, Chemists or other related disciplines. 3) Course for Graduates in Medicine. Since 1962, the School delivers every year these two courses. Their syllabus (212 hrs) dedicates a 50% of the time schedule to subjects related to radioprotection aspects. More than 1800 professional have passed their examinations, many of them from different Latin American countries. 4) Up-date on Methodology of Radioisotopes (100 hrs) a course delivered since 1992 for professionals wishing to up-date their knowledge. 5) Course for Technicians in Nuclear Medicine (more than 200 hrs). At present, this course is the basic level of the Technicians in Nuclear Medicine Career. At the present paper it will be presented statistics regarding the different courses and the experience that has been gathered for the last 40 years organizing courses and carrying out research activity on radiobiology, radioimmunoanalysis

  18. Training on radioisotopes techniques and radioprotection aspects at the School of Pharmacy and Biochemistry of the Buenos Aires University (Argentina)

    International Nuclear Information System (INIS)

    Bergoc, R.M.; Rivera, E.S.

    2005-01-01

    The use of ionizing radiation sources and radioisotopes in Argentina takes place at more than 1700 facilities, which operate in Nuclear Medicine, in Telecobaltherapy, in Industry, in Biochemistry, and in Research. All of these centers have one or more professional trained in the specific field of radioprotection and they have been authorized by the Nuclear Regulatory Authority. At the School of Pharmacy and Biochemistry of the Buenos Aires University, Argentina, we consider of great interest to teach radioisotopes methodology at different levels, to harmonize the use of these methodologies with environmental preservation and to provide education and training on radioprotection. Currently, the school offers five different courses in all of which the radioprotection is one of the most important subjects: 1) Course on Methodology of Radioisotopes for students at the undergraduate level, in the Biochemistry Career (140 hs). Since 1960, more than 6000 students have passed their examinations. 2) Course on Methodology of Radioisotopes for post-Graduates in Biochemistry, Biology, Chemists or other related disciplines. 3) Course for Graduates in Medicine. Since 1962, the School delivers every year these two courses. Their syllabus (212 hs) dedicates a 50% of the time schedule to subjects related to radioprotection aspects. More than 1800 professional have passed their examinations, many of them from different Latin American countries. 4) Up-date on Methodology of Radioisotopes (100 hs) a course delivered since 1992 for professionals wishing to up-date their knowledge. 5) Course for Technicians in Nuclear Medicine (more than 200 hs). At present, this course is the basic level of the Technicians in Nuclear Medicine Career. At the present paper it will be presented statistics regarding the different courses and the experience that has been gathered for the last 40 years organizing courses and carrying out research activity on radiobiology, radioimmunoanalysis, radioreceptors

  19. Dieta del Pirincho (Guira guira en el nordeste de la provincia de Buenos Aires, Argentina (Cuculiformes: Cuculidae

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    Guillermo E Soave

    2008-12-01

    Full Text Available Se estudió la dieta y ecología alimentaria del ave conocida en Argentina como Pirincho (Guira guira, a través del análisis de 62 contenidos estomacales. Las muestras fueron obtenidas entre 1991 y 1997 (23 en primavera, 16 en verano, 10 en otoño y 13 en invierno, en las localidades de La Balandra y Punta Blanca, partido de Magdalena, provincia de Buenos Aires. Ambos sexos fueron analizados en conjunto debido a que no se encontraron diferencias significativas en el número y en el peso de las presas consumidas por machos y hembras (U de Mann-Whitney. La dieta estuvo compuesta en un 100 % por ítemes de origen animal, representada por 92 entidades taxonómicas. Los invertebrados constituyeron más del 96% de la muestra por número, y los vertebrados un 31% del peso total. Los insectos fueron hallados en el 98% de las muestras, representando el 85% y 59% en número y peso del total consumido, respectivamente. En los contenidos estomacales se hallaron además anélidos, moluscos, crustáceos, arácnidos, anfibios, reptiles y aves. Estacionalmente no se encontraron diferencias significativas en el número de las presas capturadas. En lo referente al peso, las muestras de invierno resultaron más pesadas que las de primavera y verano (Kruskal-Wallis. El Pirincho es un ave oportunista que consume exclusivamente presas de origen animal.Feeding ecology of the Guira Cuckoo (Guira guira in the northeastern Buenos Aires Province. We studied the diet and feeding ecology of the Guira Cuckoo (Guira guira, a bird that has a wide distribution in Argentina. We analyzed 62 stomachs, obtained between 1991 and 1997 (26 in spring, 13 in summer, 10 in autumn and 13 in winter, in the localities La Balandra and Punta Blanca, Magdalena district, Buenos Aires province. in order to establish the contribution of each prey item, we applied the relative importance index. The dietary contribution in terms of number and volume was also taken into account. This species feeds

  20. Prevención de la transmisión vertical del VIH-1 en un hospital público de complejidad terciaria de Buenos Aires, Argentina Prevention of vertical HIV-1 transmission in a tertiary care public hospital in Buenos Aires, Argentina

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    Diego Cecchini

    2011-09-01

    Full Text Available OBJETIVO: Describir las características de los binomios madre-hijo, la profilaxis antirretroviral, la evolución temporal de la transmisión vertical del VIH-1 y sus variables asociadas en una población asistida por un hospital público de complejidad terciaria de Argentina. MÉTODOS: Estudio descriptivo prospectivo desarrollado por el Grupo de trabajo en prevención de la Transmisión Vertical del Hospital General de Agudos Dr. Cosme Argerich, Buenos Aires, Argentina, entre 1998 y 2008. Se compararon los períodos 1998-2003 y 2004-2008, y se identificaron las variables asociadas a esta vía de contagio. RESULTADOS: De 357 binomios madre-hijo, 21,0% de las madres presentaron coinfección con el virus de la hepatitis C y 68,0% linfocitos CD4 OBJECTIVE: To describe characteristics of mother-child binomium (MCB, antiretroviral (ARV prophylaxis, time trends, and variables associated with vertical transmission of HIV-1 in a population assisted by a tertiary public hospital in Argentina. METHODS: Prospective descriptive study undertaken by the Hospital Cosme Argerich s Vertical Transmission Working Group, Buenos Aires city, Argentina 1998-2008. Periods 1998-2003 vs. 2004-2008 were compared and variables associated with vertical transmission identified. RESULTS: Of 357 MCB, 21.0% of the mothers had HCV coinfection and 68.0% CD4 < 500/µL. During pregnancy, 75.0% received ARV: zidovudine (17.8%, zidovudinelamivudine (19.8%, zidovudine-lamivudine-nevirapine (41.9%, and zidovudinelamivudine-protease inhibitor (11.4%; 74.0% had viral load (VL peripartum < 1 000 copies/mL. Caesarean delivery: 58.0%. Intrapartum zidovudine: 83.4%; 98.0% of infants received prophylaxis; zidovudine monotherapy was the most frequently used (73.0%. Of neonates, 15.4% had low birthweight and 6.7% were premature. The global vertical transmission was 3.3% (10/302. Comparing both periods, an increase in triple ARV and VL < 1 000 copies/mL in peripartum and a decrease in the

  1. Tafonomía sobre asociaciones de vertebrados registradas en trampas fluviales de la Región Pampeana (Buenos Aires, Argentina

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    Pomi, L. H.

    2008-12-01

    Full Text Available We describe a new taphonomic mode from a fluvial system developed in channel terraces located at the Pampean Region (Quequén Grande River, Buenos Aires, Argentina associated with natural vertical cavities («marmits». We analyzed a recent (mainly aquatic vertebrate assemblage accumulated in these cavities, which operate as bone traps. Our observations suggest that these traps have accumulated isolated specimens and live or dead complete individuals during high hydric regime (torrential rains. Skeletal part representation indicates that exists a bone selection. We compare the element differential survey with different variables (structural bone density, original representation in a skeleton, size, form and volume, concluding that selection was associated with floating capabilities of missing bones (e.g. vertebrae.Se da a conocer un nuevo modo tafonómico reconocido en un sistema fluvial ubicado en la Región Pampeana (provincia de Buenos Aires, Argentina. Éste se encuentra asociado a cavidades verticales (marmitas desarrolladas en terrazas del canal principal del río Quequén Grande. Se estudió una asociación de vertebrados actuales (en su mayoría de hábitos acuáticos acumulados en estas cavidades, las cuales actuaron como trampas para los especímenes. El estudio de la muestra y observaciones realizadas in situ, sugieren que dicha trampa acumuló individuos completos (vivos o muertos y especímenes aislados durante eventos de alto régimen hídrico (lluvias torrenciales. La representación de partes anatómicas indica una selección de elementos. Se comparó la supervivencia diferencial de cada elemento con diferentes variables (densidad ósea estructural, representación original en el esqueleto, tamaño, forma y volumen, concluyendo que la selección observada se produjo por la capacidad de flotación de los elementos ausentes (p. ej., vértebras.

  2. Banco de semillas en ambientes de las sierras de Azul (Buenos Aires, Argentina con distinta intensidad de disturbios Seed bank in environments of the Azul sierras (Buenos Aires, Argentina with different disturbance intensities

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    F. Gianaccini

    2009-12-01

    Full Text Available A fin de evaluar el impacto de la agricultura sobre la flora potencial de pastizales serranos en el Partido de Azul (Buenos Aires, Argentina, se comparó el banco de semillas en los 20 cm superficiales del suelo entre dos sectores adyacentes en las primeras estribaciones serranas. Uno de ellos está sometido a agricultura permanente y el otro conserva un pastizal natural bajo pastoreo y quemas no programados. Este último sector presentó en promedio una densidad de 70.000 sem m-2 contra 36.720 sem m-2 en el primero. La representación de semillas de especies nativas se redujo notablemente en el ambiente agrícola. Stipa caudata con 31360 sem m-2 resultó la especie más abundante en el pastizal. En el ambiente de cultivo, su densidad se redujo a 9940 sem m-2 y fue superada por Chenopodium album con 10560 sem m-2. La similitud en la composición del banco fue de 55% en términos cualitativos y 27% en términos cuantitativos. Estos resultados evidencian que, en el área de estudio, el reemplazo del pastizal natural por agricultura reduce notoriamente las reservas de semillas y modifica la composición cualitativa y cuantitativa del banco con una elevada pérdida en la proporción de especies nativas.In order to evaluate the impact of agriculture on the potential flora of grasslands of the sierras of Azul (Buenos Aires Province, Argentina, the soil seed bank in the top 20 cm from two adjacent areas on the first foothill spurs were compared. One is submitted to continuous agriculture. The other area has grasslands under grazing and non programmed burning. The latter showed a mean density of 70.000 seeds m-2 against a mean density of 36.720 seeds m-2 in the first area. The proportional representation of native species seeds decreased strongly in the agricultural environment. The most abundant species in the grasslands was Stipa caudata (31.360 seeds m-2. In the agricultural environment, its density decreased to 9940 seeds m-2. It was surpassed by

  3. The HIV/AIDS epidemic and changes in injecting drug use in Buenos Aires, Argentina La epidemia de VIH/SIDA y los cambios en el uso inyectable de drogas en Buenos Aires, Argentina

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    Diana Rossi

    2006-04-01

    Full Text Available This article discusses the changes in injecting drug use from 1998 to 2003 in Buenos Aires, Argentina. The Rapid Situation Assessment and Response methodology was used to obtain the information. Quantitative and qualitative techniques were triangulated: 140 current IDUs and 35 sex partners of injection drug users (IDUs were surveyed; 17 in-depth interviews with the surveyed IDUs and 2 focus groups were held, as well as ethnographic observations. The way in which risk and care practices among injecting drug users changed and the influence of the HIV/ AIDS epidemic on this process are described. In recent years, the frequency of injection practices and sharing of injecting equipment has decreased, while injecting drug use is a more hidden practice in a context of increasing impact of the disease in the injecting drug use social networks and changes in the price and quality of drugs. Knowledge about these changes helps build harm reduction activities oriented to IDUs in their particular social context.Este artículo refleja los cambios en el uso inyectable de drogas producidos entre 1998 y 2003 en Buenos Aires, Argentina. Para obtener la información se empleó la metodología de Evaluación y Respuesta Rápida, triangulando técnicas cuantitativas y cualitativas. Durante 2003-2004 se realizaron encuestas a 140 usuarios de drogas inyectables (UDIs actuales y a 35 parejas sexuales de UDIs. De este universo, 17 UDIs fueron entrevistados en profundidad; se formaron dos grupos de discusión y observaciones etnográficas. Se describe el modo en que cambiaron las prácticas de cuidado y riesgo en el uso inyectable y la influencia de la epidemia de VIH/SIDA en este proceso. En los últimos años disminuyó la frecuencia de uso y del uso compartido de material de inyección, se incrementó el ocultamiento del uso inyectable; en un contexto de fuerte impacto de la enfermedad en el entorno cercano a los UDIs y de un cambio en la relación precio-calidad de

  4. 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

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    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.

  5. First records of Chrysomelidae (Insecta, Coleoptera on blueberries in Argentina: new associations between native chrysomelids and an exotic crop Primeros registros de Chrysomelidae (Insecta, Coleoptera sobre arándanos en Argentina: nuevas asociaciones entre crisomélidos nativos y un cultivo exótico

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    Nora Cabrera

    2012-06-01

    Full Text Available The blueberry, Vaccinium corymbosum L. (Ericaceae, is a shrub native to the northern Hemisphere introduced in Argentina, where it occupies small cultivated areas mainly in the provinces of Buenos Aires, Entre Ríos and Tucumán. At present, little is known about insects associated with this crop in Argentina. The aim of this study was to identify the species of Chrysomelidae present in blueberry crops in different regions of Argentina, and to present new chrysomelids-blueberry associations. Identification diagnosis, geographical distribution, association with other plants and aspects of their biology is given for each species. Seven species of crop-damaging Chrysomelidae were recorded in blueberry crops of Buenos Aires and Entre Rios. They belong to the subfamilies Galerucinae: Diabrotica speciosa (Germar, Disonychodes exclamationis (Boheman, Caeporis stigmula Germar, and Cacoscelis melanoptera Germar; Eumolpinae: Percolaspis varia (Lefèvre, and Spintherophyta semiaurata (Klug; and Cryptocephalinae: Lexiphanes coenobita Suffrian.El arándano, Vaccinium corymbosum L. (Ericaceae, es un arbusto nativo del hemisferio Norte, que fue introducido en la Argentina donde ocupa pequeñas áreas cultivadas, principalmente en las provincias de Buenos Aires, Entre Ríos y Tucumán. Hasta la actualidad, se conoce poco sobre los insectos asociados con este cultivo. El objetivo de este trabajo es relevar las especies de crisomélidos presentes en los cultivos de arándano de diferentes regiones, y aportar nuevas asociaciones crisomélidos-arándano para la Argentina. Para cada especie registrada, se brinda la diagnosis para su reconocimiento, su distribución geográfica, la asociación con otras plantas y algunos aspectos de su biología. Se registraron siete especies de Chrysomelidae que utilizan el arándano como recurso alimenticio en las provincias de Buenos Aires y Entre Ríos: subfamilia Galerucinae: Diabrotica speciosa (Germar, Disonychodes

  6. Air Pollution Episodes Associated with Prescribed Burns

    Science.gov (United States)

    Hart, M.; Di Virgilio, G.; Jiang, N.

    2017-12-01

    Air pollution events associated with wildfires have been associated with extreme health impacts. Prescribed burns are an important tool to reduce the severity of wildfires. However, if undertaken during unfavourable meteorological conditions, they too have the capacity to trigger extreme air pollution events. The Australian state of New South Wales has increased the annual average area treated by prescribed burn activities by 45%, in order to limit wildfire activity. Prescribed burns need to be undertaken during meteorological conditions that allow the fuel load to burn, while still allowing the burn to remain under control. These conditions are similar to those that inhibit atmospheric dispersion, resulting in a fine balance between managing fire risk and managing ambient air pollution. During prescribed burns, the Sydney air shed can experience elevated particulate matter concentrations, especially fine particulates (PM2.5) that occasionally exceed national air quality standards. Using pollutant and meteorological data from sixteen monitoring stations in Sydney we used generalized additive model and CART analyses to profile the meteorological conditions influencing air quality during planned burns. The insights gained from this study will help improve prescribed burn scheduling in order to reduce the pollution risk to the community, while allowing fire agencies to conduct this important work.

  7. Metallurgical sessions. Second ALAMET congress (held in) Buenos Aires, Argentina, 6-10 May 1991

    International Nuclear Information System (INIS)

    1991-01-01

    This congress was held in Buenos Aires, Argentine Republic, on May 6-10, 1991, gathering experts from all over the world. The present volume includes the papers presented at the Metallurgical Sessions - II. ALAMET Congress [es

  8. Immigrant associations and ethnic identity among Japanese immigrants and their descendants in Argentina

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    Silvina Gómez

    2014-11-01

    Full Text Available Japanese migration to Argentina started in the early Twentieth Century, with the arrival of Japanese men from other Latin American countries and did not stop until the 60’s even though as time passed the composition of the immigrant group changed and so did their objectives. Japanese immigrants soon created voluntary associations where they gathered, a trend that still survives to these days. The different kind of associations they created, their aims and later development as well as their relationship to the Japanese government, are broached in this paper. It focuses on the changes Japanese associations have suffered along the process, a as support devices for young men that arrived as dekaseguis in early times, and whose stay was extended indefinitely, b during the Second World War crisis c with the arrival of Japanese newcomers during the postwar period, d attending to the cases of Japanese migrants arriving from the Dominican Republic, Paraguay and Bolivia; and, finally, dealing with the dilemma aroused by the decision to settle definitively versus the desire to preserve Japanese traditions and identity

  9. Caracterización de los Servicios de Atención en Violencia Familiar del área metropolitana de Buenos Aires, Argentina Analysis of Services Targeting Family Violence Against Women in Greater Metropolitan Buenos Aires, Argentina

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    Roxana Cecilia Ynoub

    1998-01-01

    Full Text Available Se presentan, en este trabajo, un diagnóstico y evaluación de la disponibilidad de servicios existentes en la región metropolitana de Buenos Aires para la atención en Violencia Familiar Contra la Mujer. De ellos se describen las redes existentes y las articulaciones intersectoriales. Asimismo se evaluan su desarrollo institucional, los enfoques teóricos, las modalidades de intervención y la producción de información e investigaciones. Entre los resultados, se destaca la presencia de distintas perspectivas teóricas ­ particularmente entre quienes incluyen o no la temática de género ­, a las que corresponden distintas modalidades de intervención; y las conexiones ­ más informales que formales ­ entre distintos sectores y áreas oficiales y las organizaciones no gubernamentales. Finalmente se proponen las experiencias institucionales desarrolladas en esta tema como un modelo de nuevas modalidades en el diseño de políticas públicas y de salud.This study presents a diagnosis and evaluation of the availability of services related to family violence against women in Greater Metropolitan Buenos Aires, Argentina. The paper focuses on institutional development, theoretical foci, intervention modalities, and production of information and research. Existing networks and interprofessional relationships are also described. Results point to several noteworthy theoretical perspectives. Some programs include gender as an issue, while others do not. The relationship (more informal than formal between governmental and nongovernmental organizations is also a relevant issue. The paper concludes by proposing these institutional experiences as a model for the design of new public health policies.

  10. 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

  11. Recursos fitoterapéuticos y comportamiento poblacional en la ribera rioplatense de Berisso, Buenos Aires, Argentina

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    Marcelo P. Hernández

    2011-07-01

    Full Text Available El trabajo da a conocer de manera comparativa, el recurso fitoterapéutico utilizado por los habitantes de dos sectores de la ribera rioplatense, uno continental, ubicado en las localidades de Palo Blanco y Los Talas denominado "Monte" y, otro insular, representado por la isla Paulino, ambos situados al noreste del partido de Berisso, provincia de Buenos Aires, Argentina. El objetivo es analizar comparativamente el comportamiento de los habitantes en el uso de las plantas medicinales en relación con el ambiente en que se encuentran situadas las unidades domésticas. Los resultados demostraron que existen diferencias atribuibles a factores tradicionales, estructurales y ambientales que conducen a un mayor conocimiento y uso de plantas para tratar afecciones de la piel, reumatismo, artritis y asma en la zona insular, mientras que en la zona continental, se destaca el uso de plantas para tratar parasitosis y problemas de las vías respiratorias. De un total de 61 especies, se destaca el uso de Aloe vera (L. Burm f. (Asphodelaceae, Cortaderia selloana (Schult. & Schult. f. Asch. & Graebn. (Poaceae y Equisetum giganteum L. (Equisetaceae, así como el uso del liquen Ramalina celastri (Spreng. Krog & Swinscow en la Isla Paulino.

  12. First report of an HIV-1 triple recombinant of subtypes B, C and F in Buenos Aires, Argentina

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    Weissenbacher Mercedes

    2006-09-01

    Full Text Available Abstract We describe the genetic diversity of currently transmitted strains of HIV-1 in men who have sex with men (MSM in Buenos Aires, Argentina between 2000 and 2004. Nearly full-length sequence analysis of 10 samples showed that 6 were subtype B, 3 were BF recombinant and 1 was a triple recombinant of subtypes B, C and F. The 3 BF recombinants were 3 different unique recombinant forms. Full genome analysis of one strain that was subtype F when sequenced in pol was found to be a triple recombinant. Gag and pol were predominantly subtype F, while gp120 was subtype B; there were regions of subtype C interspersed throughout. The young man infected with this strain reported multiple sexual partners and sero-converted between May and November of 2004. This study reported for the first time the full genome analysis of a triple recombinant between subtypes B, C and F, that combines in one virus the three most common subtypes in South America.

  13. Memorias de las desapariciones. Los vecinos del Centro Clandestino de Detención del Hospital Posadas, Buenos Aires, Argentina

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    Emilio Crenzel

    2012-10-01

    Full Text Available En este artículo se examinan las memorias que circulan entre vecinos del Hospital Posadas, ubicado en Haedo, provincia de Buenos Aires, Argentina, sobre la represión política en tiempos de la última dictadura militar (1976‑1983. Tras el golpe de Estado, funcionó en el Hospital Posadas un Centro Clandestino de Detención en el cual se mantenían personas cautivas ilegalmente, en condición de desaparecidas. Así, en el Hospital Posadas convivieron, simultáneamente, las prácticas relativas al cuidado y restauración de la salud y la perpetración de torturas y asesinatos. En este trabajo se analizarán los recuerdos y olvidos de estos hechos entre diversos vecinos que habitaban, en tiempos de la dictadura, en las inmediaciones del Hospital Posadas. Específicamente, se indagará qué experiencias tuvieron con la violencia de Estado, en particular con el sistema de desaparición de personas, y cómo ellas han quedado inscriptas en sus memorias personales. Por último, se analizarán la información que circulaba y los grados de conocimiento que poseían estos vecinos sobre los atributos, naturaleza y responsables de las desapariciones en el hospital mientras éstas se perpetraban.

  14. Características hidro-geomorfológicas de la cuenca del Arroyo Pescado Castigado, Buenos Aires, Argentina

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    Silvia I. Munguía

    2003-01-01

    Full Text Available La cuenca del arroyo Pescado Castigado se encuentra localizada en el Sureste de la provincia de Buenos Aires, Argentina. La peculiaridad de esta cuenca de llanura radica básicamente en su morfología poco definida, puesto que provoca que la red de drenaje sea muy versátil y dinámica. Esto afecta a la principal actividad económica: la agricultura y la ganadería a través de la cantidad de agua disponible, cantidad de superficie anegada o con erosión hídrica, hidromorfismo y halomorfismo. El área de estudio presenta cuatro unidades hidrográficas, la primera se caracteriza porque la escorrentía es laminar, la segunda presenta sistemas anárquicos de disipación o derrames areales, la tercera es un sistema mixto lineal y areal y la cuarta es un área poco inundable y anegable que presenta problemas de salinización. El objetivo de este trabajo es analizar los rasgos geomorfológicos de la cuenca que pueden estar asociados al funcionamiento de la escorrentía en estas cuatro unidades.

  15. Ciclo reproductivo de Liolaemus gracilis Bell, 1843 (Iguanidae: Tropidurinae en las dunas costeras de Buenos Aires, Argentina

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    Vega, Laura Estela

    2005-02-01

    Full Text Available Estudiamos la fenología y edad de madurez reproductiva y el tamaño y la frecuencia de la puesta de una población de Liolaemus gracilis de las dunas costeras de Buenos Aires, Argentina. Examinamos las gónadas de 93 ejemplares coleccionados mensualmente a lo largo de un año en la localidad de Mar del Sur (provincia de Buenos Aires y medimos 11 caracteres morfométricos en 39 adultos en búsqueda de dimorfismo sexual. Las hembras se consideraron maduras si poseían folículos yemados mayores a 2 mm, o huevos oviductales, u oviductos claramente distendidos. En los machos los indicadores de madurez sexual fueron la presencia de testículos agrandados y el estado convoluto de los epidídimos, midiéndose el ancho y largo del testículo izquierdo en cada uno. L. gracilis exhibió un patrón reproductivo estacional con características del tipo parcial de otoño. El tamaño medio de las hembras en actividad reproductiva fue de 48,9 mm ± 3,5 (largo hocico-cloaca (n = 19 y la menor madura sexualmente midió 43,8 mm. El tamaño de la puesta varió de 4 a 6 huevos ( X = 4,75 ± 0,95, n = 4. El macho de menor tamaño con testículos agrandados midió 40,5 mm. (largo hocico-cloaca. Tanto los machos como las hembras estuvieron reproductivamente activos desde comienzos del otoño hasta comienzos del verano. Las hembras producirían una puesta por año entre fines de la primavera y comienzos del verano y las crías nacerían a mediados de esta estación. Encontramos dimorfismo sexual en la mayor distancia entre los miembros anteriores y posteriores de las hembras y en la mayor longitud de la cabeza, tibio-fíbula y pie de los machos. We studied the reproductive phenology, size at maturity, frequency and clutch size of a lizard population of Liolaemus gracilis from coastal sand dunes of Buenos Aires, Argentina. We examined 93 specimens collected monthly throughout a year in the locality of Mar del Sur (Buenos Aires province and measured 11 morphometric

  16. Pobreza y desempeño ejecutivo en alumnos preescolares de la ciudad de Buenos Aires (Republica Argentina

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    Sebastián Javier Lipina

    2004-01-01

    Full Text Available El estudio de los efectos de la pobreza sobre el desempeño cognitivo durante las primeras fases del desarrollo, ha sido efectuado predominantemente en base a la definición de pobreza según el ingreso y el uso de paradigmas de inteligencia basados en la hipótesis de un factor general de funcionamiento cognitivo. En el presente trabajo se utilizó el concepto de Necesidades Básicas Insatisfechas (NBI como criterio de pobreza y se aplicó un paradigma cognitivo de funcionamiento ejecutivo proveniente de la Neurociencia. El mismo plantea el análisis de componentes de comportamientos inteligentes orientados hacia objetivos y asociados a la activación de circuitos cerebrales que involucran centralmente a la región prefrontal. Se comparó el desempeño ejecutivo de 247 niños escolarizados de 3 a 5 años de edad, provenientes de hogares pobres (NBI y no pobres o con Necesidades Básicas Satisfechas (NBS, y de jardines de infantes del Distrito Escolar 4 de la Ciudad de Buenos Aires (Boca-Barracas y de distritos escolares de Vicente López y San Isidro del Gran Buenos Aires (Argentina. Se administró una batería de pruebas que evalúan componentes de flexibilidad cognitiva, logro de objetivos y control atencional. Los resultados obtenidos muestran perfiles de desempeño diferentes entre ambos grupos. El perfil de desempeño menos eficiente en términos de las variables estudiadas se observó en el grupo de niños proveniente de hogares pobres. Estos resultados constituyen un aporte significativo de un paradigma neurocientífico para la implementación de estrategias de intervención orientadas a estimular el funcionamiento cognitivo de tipo ejecutivo de niños de edad preescolar.

  17. An illustrated key to and diagnoses of the species of Histeridae (Coleoptera) associated with decaying carcasses in Argentina

    Science.gov (United States)

    Aballay, Fernando H.; Arriagada, Gerardo; Flores, Gustavo E.; Néstor D. Centeno

    2013-01-01

    Abstract A key to 16 histerid species associated with decaying carcasses in Argentina is presented, including diagnoses and habitus photographs for these species. This article provides a table of all species associated with carcasses, detailing the substrate from which they were collected and geographical distribution by province. All 16 Histeridae species registered are grouped into three subfamilies: Saprininae (twelve species of Euspilotus Lewis and one species of Xerosaprinus Wenzel), Histerinae (one species of Hololepta Paykull and one species of Phelister Marseul) and Dendrophilinae (one species of Carcinops Marseul). Two species are new records for Argentina: Phelister rufinotus Marseuland Carcinops troglodytes (Paykull). A discussion is presented on the potential forensic importance of some species collected on human and pig carcasses. PMID:23653510

  18. An illustrated key to and diagnoses of the species of Histeridae (Coleoptera associated with decaying carcasses in Argentina

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    Fernando Aballay

    2013-01-01

    Full Text Available A key to 16 histerid species associated with decaying carcasses in Argentina is presented, including diagnoses and habitus photographs for these species. This article provides a table of all species associated with carcasses, detailing the substrate from which they were collected and geographical distribution by province. All 16 Histeridae species registered are grouped into three subfamilies: Saprininae (twelve species of Euspilotus Lewis and one species of Xerosaprinus Wenzel, Histerinae (one species of Hololepta Paykull and one species of Phelister Marseul and Dendrophilinae (one species of Carcinops Marseul. Two species are new records for Argentina: Phelister rufinotus Marseul and Carcinops troglodytes (Paykull. A discussion is presented on the potential forensic importance of some species collected on human and pig carcasses.

  19. Anthropometric Indicators in Children Referred to a Tertiary-level Public Health Care Institution from Buenos Aires, Argentina

    International Nuclear Information System (INIS)

    Janjetic, Mariana Andrea; Mantero, Paula; Zubillaga, Marcela Beatriz; Boccio, José; Goldman, Cinthia

    2014-01-01

    Full text: Introduction: Stunting is a multifactorial phenomenon with a high prevalence in developing countries. Helicobacter pylori, a bacterium that colonizes the gastric mucosa, has been related to growth impairment due to micronutrient malabsorption. However this hypothesis remains controversial. Objective: The aim of our work was to determine anthropometric indicators in children referred to a Tertiary-level Public Health Care Institution from Buenos Aires, Argentina, for upper gastrointestinal symptoms evaluation. Methods: 525 children (4-16 y) assisting to the Gastroenterology Unit of the Hospital de Niños “Sor María Ludovica”, La Plata, Argentina, were diagnosed for H. pylori infection by the 13C-Urea Breath Test. Weight and height were measured for calculation of anthropometric indicators height for age (HAZ), weight for age (WAZ) and Body Mass Index for age (BMI) using the Anthro Plus 2007 software of the World Health Organization. Statistical analysis was performed by Student’s t Test, Mann-Whitney Test and lineal regression. Results: Prevalence of H. pylori infection was 25.1% (95% CI, 21.5-29.5), with a mean age of the children similar in both groups, 10.1y (95% CI, 9.8-10.3y). Mean HAZ and WAZ were -0.40 (95% CI, -0.57-[-0.22]) and -0.31 (95% CI, -0.51-[-0.11]) in the positive group, and -0.18 (95% CI, -0.28-[-0.09]) and -0.10 (95% CI, -0.21-0.01) in the negative group. HAZ was significantly lower in the positive group (p = 0.04), while no significant differences were found for WAZ (p = 0.07) and BMI for age (p = 0.20) between both groups. However, after adjusting for confounding factors these differences were no longer significant. Stunting was found in 4.5% (95% CI, 2.1-9.6) and 3.3% (95% CI, 1.9-5.6) of the H. pylori positive and negative children respectively, while underweight was observed in 5.3% (95% CI, 2.6-10.5) and 6.7% (95% CI, 4.6-9.6) of the above mentioned groups. Conclusions: Prevalence of stunting and underweight were low in

  20. Immigration and Educational Inclusion: Preliminary Evidence from Three Schools in Buenos Aires, Argentina

    Science.gov (United States)

    Astiz, M. Fernanda

    2015-01-01

    This exploratory comparative case study examines three schools in the Autonomous City of Buenos Aires that have a considerable number of recent immigrant students. The article illustrates how these schools advance ideas of inclusiveness and pluralism through the curriculum and educational opportunities, as mandated by the national education law of…

  1. Colaspis caligula, a new species found in association with Vitis vinifera (L.) crops in Argentina (Coleoptera: Chrysomelidae).

    Science.gov (United States)

    Agrain, Federico A; Cabrera, Nora; Holgado, Miriam G; Vicchi, Franco R

    2016-09-05

    Some species of Colaspis Fabricius are well-known pests of several crops in Argentina. In this contribution, we describe a new species within this genus: Colaspis caligula n. sp., found in association with Vitis vinifera (Linnaeus) crops. We provide descriptions and illustrations of the mature larva, pupa and adult, as well as notes on its diagnostic characters, life cycle, and the damages produced to the plants.

  2. EL AVANCE DE LA FRONTERA AGRÍCOLA EN EL ÁREA ADYACENTE AL SISTEMA SIERRAS DE LA VENTANA (BUENOS AIRES, ARGENTINA

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    Mario Fabián Marini

    2008-01-01

    Full Text Available Se determinó el incremento de la superficie agrícola en el área adyacente al Sistema Sierras de la Ventana (Buenos Aires, Argentina. Para ello se emplearon imágenes satelitales Landsat 5 TM de diversas fechas, realizándose una comparación entre la campaña agrícola 1998/ 1999 con respecto a la 2006/ 2007. El análisis llevado a cabo demuestra que existe un incremento en la superficie dedicada a la actividad agrícola que asciende a 55572 has, lo que representa en un aumento del 27,97 %. El mismo es originado principalmente por la propagación de los cultivos de verano, principalmente de la soja, de significativa expansión en la República Argentina en las últimas dos décadas.

  3. Public library services in the information age: international overview and the situation in Buenos Aires (Argentina

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    Elsa Barber

    2004-01-01

    Full Text Available The article analizes public/popular library services in Buenos Aires and surrounding areas. The aim has been to relate the descriptive local data with the trends in developed countries after a selective study of the international literature. The results have shown that the studied units provide a basic service, misuse their alleged technological infrastructure and do not direct their resources to implement the services required by society in the information age.

  4. 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

  5. First records of Chrysomelidae (Insecta, Coleoptera on blueberries in Argentina: new associations between native chrysomelids and an exotic crop

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    Nora CABRERA

    2012-01-01

    Full Text Available El arándano, Vaccinium corymbosum L. (Ericaceae, es un arbusto nativo del hemisferio Norte, que fue introducido en la Argentina donde ocupa pequeñas áreas cultivadas, principalmente en las provincias de Buenos Aires, Entre Ríos y Tucumán. Hasta la actualidad, se conoce poco sobre los insectos asociados con este cultivo. El objetivo de este trabajo es relevar las especies de crisomélidos presentes en los cultivos de arándano de diferentes regiones, y aportar nuevas asociaciones crisomélidos-arándano para la Argentina. Para cada especie registrada, se brinda la diagnosis para su reconocimiento, su distribución geográfica, la asociación con otras plantas y algunos aspectos de su biología. Se registraron siete especies de Chrysomelidae que utilizan el arándano como recurso alimenticio en las provincias de Buenos Aires y Entre Ríos: subfamilia Galerucinae: Diabrotica speciosa (Germar, Disonychodes exclamationis (Boheman, Caeporis stigmula Germar, Cacoscelis melanoptera Germar; subfamilia Eumolpinae: Percolaspis varia (Lefèvre y Spintherophyta semiaurata (Klug; y subfamilia Cryptocephalinae: Lexiphanes coenobita Suffrian.

  6. 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

  7. Urban political ecologies of informal recyclers׳ health in Buenos Aires, Argentina.

    Science.gov (United States)

    Parizeau, Kate

    2015-05-01

    Buenos Aires׳ informal recyclers (cartoneros) confront multiple health hazards in their work. Based in a survey with (n=397) informal recyclers, this study establishes that these workers experience uneven health landscapes as evidenced through their health outcomes, the social determinants of their health, and their living and working environments. I argue that the analytical framework of urban political ecology can provide insights to the ways that the urban environments where cartoneros live and work are socially-constructed phenomena, drawing on concepts of crisis, metabolism, and multi-scalar analyses. Copyright © 2015 Elsevier Ltd. All rights reserved.

  8. Summer feeding ecology of Great Pampa-finches, Embernagra platensis at Laguna de Guaminí, Buenos Aires, Argentina

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    Laura M. Ferman

    2010-09-01

    Full Text Available The aim of this study was to assemble data on the summer feeding ecology of the Great Pampa-finch, Embernagra platensis at the Laguna de Guaminí, Buenos Aires, Argentina, and to explore the differences related to the dietary patterns for each sex between winter and summer when possible. The stomach contents of 43 birds were analyzed. The animal fraction was composed of Hymenoptera (45.1%, Coleoptera (32.4%, Lepidoptera (6.0%, Araneae (5% and Orthoptera (3.2%. The application of the index of relative importance (IRI resulted in 1490.4 for Coleoptera, 428.5 for Hymenoptera and 162.5 for Lepidoptera caterpillars. The vegetal fraction consisted of Triticum aestivum (26.9%, Cyperaceous (25%, Poaceae (Gramineae (19.3% and Panicum sp. (11.2%. The IRI values were 893.8 for Triticum aestivum, 174.5 for Gramineae, 126.5 for Panicum sp. and 112.8 for Scirpus sp. The food niche width was 0.33 for both sexes; the diversity index resulted in 1.06 for females and 1.33 for males and specific diversity ranged from 1.87 to 2.84. A canonical component analysis (CCA was performed on environmental and morphometric variables, and a Monte Carlo test confirmed the canonical correlations. A t-test showed that some birds harmonized with a logarithmic model and some with a geometric curve. During the summer, Embernagra platensis ingests Hymenoptera and Coleoptera more often than seeds, suggesting that two biological mechanisms could be taking place in this bird.O objetivo deste estudo foi reunir dados referentes à ecologia alimentar do Sabiá-do-banhado, Embernagra platensis, na laguna de Guaminí, Buenos Aires, Argentina, e explorar as diferenças relacionadas aos padrões dietéticos para cada sexo entre inverno e verão, quando possível. O conteúdo estomacal de 43 pássaros foi analisado. A fração animal foi composta por Hymenoptera (45,1%, Coleoptera (32,4%, Lepidoptera(6,0%, Araneae (5% e Orthoptera (3,2%. A aplicação do índice de importância relativa (IRI

  9. Aporte aborigen y africano de diferentes regiones de la Argentina en Buenos Aires

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    Avena, Sergio Alejandro

    2003-01-01

    Full Text Available En trabajos anteriores realizados en muestras poblacionales de la Región Metropolitana de Buenos Aires (RMBA hemos observado un 15,2 % de aporte indígena (AI y un 3,8% de africano (AA. En el presente estudio se analizó una muestra de 169 individuos provenientes de las regiones del noroeste (NOA, del nordeste (NEA y del centro del país (CP, se excluye la RMBA que fueron donantes en el Banco de Sangre de la Provincia de Buenos Aires. Esta muestra se adicionó a las previamente obtenidas de las mismas regiones en los hospitales de Clínicas e Italiano. El objetivo fue evaluar si existe una distribución diferencial del AI y el AA según la región de origen de los dadores. Para ello se determinaron los sistemas ABO, Rh, MNS, Diego, Duffy, Gm y Km. Las frecuencias génicas y haplotípicas fueron calculadas mediante métodos de máxima verosimilitud y la mezcla génica se calculó aplicando el programa ADMIX. La región con mayor AI fue NOA (49,5% seguida por NEA (28,4% y CP (17,2%, mientras que el AA fue similar en las tres regiones (NOA 3,2%, NEA 3,5% y CP 3,8.

  10. 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.

  11. 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.

  12. Crímenes de Estado, espacialidad y memorias en la Argentina: el caso del Hospital Posadas, Buenos Aires

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    Emilio Ariel Crenzel

    2016-12-01

    Full Text Available En este artículo se examinarán las transformaciones espaciales operadas en el Hospital Posadas y sus barrios adyacentes durante el ciclo de violencia política y dictadura militar en Argentina y su inscripción en las memorias de sus trabajadores y habitantes. El Hospital Posadas, ubicado en la localidad de Haedo, en la provincia de Buenos Aires, fue epicentro de un proceso de radicalización política hasta el golpe de Estado de 1976. Tras el golpe, funcionó en sus dependencias un centro clandestino de detención donde estuvieron personas cautivas en condición de desaparecidas mientras se seguían desarrollando las prácticas habituales relativas al centro de salud. Simultáneamente, en sus barrios adyacentes se desenvolvió una intensa represión política. Se considera aquí que el espacio constituye uno de los marcos sociales fundamentales de la memoria colectiva y que en sus permanencias y transformaciones se materializan, a la vez, las memorias sociales de los actores que luchan por dotar de sentido el pasado. Se entiende que, por ello, este análisis permitirá historizar y comprender el proceso de violencia política en la zona a partir de los cambios operados en la topografía del Hospital y del barrio y de su impacto en las memorias de sus trabajadores y habitantes. URN: http://nbn-resolving.de/urn:nbn:de:0114-fqs1701203

  13. La distribución del gasto educativo en la provincia de Buenos Aires, Argentina: ¿Es equitativa?

    Directory of Open Access Journals (Sweden)

    María Marta Formichella

    2015-01-01

    Full Text Available La equidad en educación es socialmente deseable debido a la relevancia de la formación en el desarrollo de las personas. Por ello, resulta interesante estudiar si la asignación del gasto destinado a educación tiene en cuenta este aspecto. Dado que el concepto de equidad no es un unívoco, es necesario definir una postura; en el trabajo se asume que existe equidad educativa si hay igualdad en los resultados educativos. Así, el objetivo de éste es analizar si la distribución del gasto educativo entre los distritos de la provincia de Buenos Aires, Argentina, es equitativa. Se planteó la hipótesis de que no lo es. Para contrastarla, se utilizó el coeficiente de GINI y una regresión de Mínimos Cuadrados Ordinarios (MCO. Se halló que la distribución de los fondos se vincula en forma directa con el grado de analfabetismo de los distritos, pero al mismo tiempo se encontró evidencia de que es independiente de la pobreza, de la tasa de abandono escolar, del porcentaje de matrícula en los niveles iniciales y de la proporción de establecimientos clasificados como desfavorables. Entonces, se concluye que la distribución de los fondos de gastos educativos no se rige, o lo hace muy débilmente, por el principio de equidad considerado en el trabajo. Es decir, que la evidencia empírica verifica la hipótesis propuesta.

  14. High human immunodeficiency virus type 1 seroprevalence in men who have sex with men in Buenos Aires, Argentina: risk factors for infection.

    Science.gov (United States)

    Pando, Maria de los Angeles; Maulen, Sergio; Weissenbacher, Mercedes; Marone, Rubén; Duranti, Ricardo; Peralta, Liliana Martínez; Salomón, Horacio; Russell, Kevin; Negrete, Monica; Sosa Estani, Sergio; Montano, Silvia; Sanchez, José L; Avila, Maria Mercedes

    2003-10-01

    To determine human immunodeficiency virus (HIV) seroprevalence in a sample of men who have sex with men (MSM) in Buenos Aires City and to identify risk factors associated with HIV type 1 infection. Participants were invited to receive HIV counselling and testing at "NEXO" (a gay non-governmental organization) by means of informative leaflets distributed in gay nightclubs, porno cinemas, gymnasiums, and in the streets. During the encounter, the study was explained by a trained social worker and individuals were invited to volunteer for the study. Diagnosis of HIV was performed using two screening tests and Western Blot assay was used as confirmatory. Human immunodeficiency virus was detected in 96 (13.8%; 95% CI: 11.4-16.7) of 694 MSM. Fourteen (14.6%) of the 96 HIV-positive MSM were already aware of their HIV serostatus. In univariate analysis, HIV-1 infection (odds ratio [OR] >1.5) was found to be associated with older age (30-39 years), being unemployed, a previous sexually transmitted disease (STD) history, and having an HIV-positive partner. Cocaine consumption and irregular use of condoms with occasional partners were also found to be risk factors. In multivariate logistic regression analysis, being unemployed (OR = 3.42; 95% CI: 1.17-9.99) and having an HIV-positive partner (OR = 2.67; 95% CI: 1.09-6.52) remained significant risk factors. The high HIV-1 prevalence observed suggests an urgent need for implementation of effective prevention campaigns. This represents the first cross-sectional epidemiological study of HIV among the high-risk group of MSM in Argentina.

  15. Monitoring Pt and Rh in urban aerosols from Buenos Aires, Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Bocca, Beatrice; Caimi, Stefano; Caroli, Sergio [Istituto Superiore di Sanita, Viale Regina Elena 299, 00161, Rome (Italy); Smichowski, Patricia; Gomez, Dario [Comision Nacional de Energia Atomica, Unidad de Actividad Quimica, Centro Atomico Constituyentes, Av. Gral. Paz 1499, B1650KNA-San Martin, Pcia. de Buenos Aires (Argentina)

    2006-04-01

    Vehicular traffic is the main source of platinum group elements (PGEs) in highly populated urban areas like Buenos Aires where a traffic density of 1,500,000 vehicles day{sup -1} (corresponding to 7500 vehicles km{sup -2}) is estimated. Since there is no information on the levels of PGEs in Buenos Aires, a pilot study was undertaken to ascertain the amount of two major PGEs, namely Pt and Rh, in the atmosphere of this city. To this end, 49 samples of PM-10 particulate matter were collected during 7 days in seven representative sampling sites located downtown Buenos Aires and spread over an area of about 30 km{sup 2}. The collection of particulate matter was performed on ash-free glass-fiber filters using high volume samplers with PM-10 sampling heads. Filters loaded with the particulate matter were subjected to microwave (MW)-assisted acid digestion using a combination of HNO{sub 3}, HF and HClO{sub 4}. The resulting solutions were evaporated and then diluted with 0.1 mol l{sup -1} HCl. Analyses were performed by sector field inductively coupled plasma-mass spectrometry (SF-ICP-MS) and special attention was paid to the control of mass interferences. Statistical analysis was performed on the experimental data obtained for the element concentrations taking also into account local meteorological data for the monitored period. The highest concentrations of Pt and Rh were detected at two sites (Hospital Aleman and Casa Rapallini) located in streets with traffic consisting mostly of passenger cars. The Pt content (in pg m{sup -3}) in airborne particulate matter was found to vary from 2.3 to 47.7, with a mean value of 12.9+/-7, and that of Rh from 0.3 to 16.8, with a mean value of 3.9+/-2.8. These concentrations are by far below the levels for which adverse health effects might be expected to occur, i.e., around 100 ng m{sup -3}. On the other hand, monitoring of PGEs should be carried out in a systematic fashion to detect possible dramatic increases from today

  16. Legitiming psychiatrists rather than curing patients. The shock therapy in Buenos Aires, Argentina (1930-1970

    Directory of Open Access Journals (Sweden)

    Alejandra Golcman

    2017-06-01

    Full Text Available This research aims to explain the theoretical and clinical use of shock therapies in Argentine psychiatric field, particularly in the province of Buenos Aires between 1930 and 1970. It is argued that it is necessary to study the theoretical and clinical psychiatric work, in order to learn how psychiatrists interpreted mental pathology. Thus two distinct scenarios are analyzed: first academia, emphasizing on medical texts expressing discussions held at congresses, conferences, university chairs, and secondly in hospital settings, represented by a population of chronic patients in a hospital on the outskirts of the Capital Federal, the Esteves Hospital of Lomas de Zamora. The use of shock therapy in the hands of psychiatrists, changed the way of understanding madness and transformed the daily course of hospitals. Therefore, the presence of such therapies was relevant to legitimize the discipline, regardless of the “effectiveness” with patients.

  17. Incidencia potencial de la erosión eólica sobre la degradación del suelo y la calidad del aire en distintas regiones de la Argentina Potential effects of wind erosion on soil degradation and air quality in different regions of Argentina

    Directory of Open Access Journals (Sweden)

    Daniel E Buschiazzo

    2009-12-01

    ía relativamente más a la calidad del aire que a la del suelo. La magnitud de este proceso estaría regida, principalmente, por el área disponible para la erosión. En suelos sometidos a manejos agrícolas, frecuentemente desnudos y de bajo grado de evolución como los Ustipsammentes y Haplustoles, la erosión eólica tendría efectos intermedios, afectando tanto a la calidad del suelo como a la del aire. Finalmente, en suelos relativamente más evolucionados y sometidos a manejos agrícolas como los Hapludoles, la erosión afectaría en mayor medida a la calidad del suelo, siendo la emisión de partículas finas de relativa menor importancia.Wind erosion can impact soil and air quality. The magnitude of these effects depends on the soil type and management conditions, and is associated with the transport conditions of soil particles: saltation and rolling affect soil quality to a greater extent while suspension tends to increase the emission of fine particles to the atmosphere. The objective of this research was to determine the magnitude of both type of movements in soils of Argentina, in order to predict potential effects on soil or air quality. This study was carried out in four provinces of Argentina: Chaco (CHA, San Luis (SLU, La Pampa (LPA and Río Negro (PAT. In each case, wind erosion was measured in the 1 ha-square fields by means of BSNE samplers. Results indicated that the total amount of transported material, the so-called mass flux (FM as well as the absolute amount of eroded soil (Q were higher in sites with less developed soils of SLU (Ustipsamment and LPA (Haplustoll and lower in sites with a better developed soil of CHA (Hapludoll or with less developed soil but with permanent soil cover with natural grasses of PAT (Haplargid. Saltation and rolling were the main transport forms in SLU, LPA and CHA and suspension in PAT. Though low (10%, the plant coverage existing in this last site was enough to increase the height of the wind profile and to favor the transport

  18. 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

  19. Análisis palinológico de un homicidio en la Provincia de Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Leticia Karina Povilauskas

    2017-10-01

    Full Text Available Los objetivos de esta contribución son dar a conocer las actividades desarrolladas en base a la Palinología Forense en un caso de homicidio calificado ocurrido en la Provincia de Buenos Aires, Argentina; y poner al alcance de los científicos naturalistas algunas metodologías periciales adecuadas para fomentar su participación con el fin de sumar aportes a la hora de esclarecer un crimen desde la Palinología. En el presente trabajo se exponen los resultados obtenidos a partir del estudio y análisis palinológico sobre un homicidio realizado en los márgenes del río Reconquista, en la Provincia de Buenos Aires. Se realizó un estudio exhaustivo de la flora del lugar y, el análisis de las muestras que han sido colectadas a lo largo de las márgenes del río Reconquista ha arrojado como resultado una asociación palinológica conformada por polen y quistes de algas. Los espectros polínicos están dominados principalmente por granos de polen de cañaverales (Arundo donax, Salicaceae, Cyperaceae y Poaceae, con Asteraceae y Myrtaceae subordinados. Las algas dinofíceas están representadas por quistes de dinoflagelados estuáricos del orden Gonyaulacales (Operculodinium centrocarpum (Deflandre y Cookson Wall.  Las algas clorofíceas consisten en cenobios de Pediastrum boryanum (Turpin Meneghini y colonias de Botryococcus braunii Kützing, y entre las Cyanophyta se encontraron vainas de Rivulariaceae (Gloeotrichia sp..  Un protocolo de investigación forense implica algunas consideraciones para tener en cuenta, como la escena del crimen, la recolección apropiada de muestras y, el análisis palinológico del laboratorio, quedando a disposición de los jueces y fiscales como pruebas muy útiles para la investigación de un homicidio.

  20. Programas de salud sexual y reproductiva y maternidad adolescente en La Plata (Buenos Aires, Argentina

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    Susana Ortale

    2009-12-01

    Full Text Available La mirada estigmatizante de la maternidad en la adolescencia y el interés por controlar la sexualidad por parte del sector sanitario, es reciente y diferente para hombres y mujeres. Sabemos que las categorías género y edad, en tanto construcciones culturales que aluden a relaciones básicas de desigualdad -atravesadas por estructuras económico-políticas particulares-, están cargadas de significados que se dirimen en un campo social predispuesto a reforzar estereotipos naturalizantes y relaciones de dominación. El estudio se ubica en la problemática general del reconocimiento de derechos presente en los programas de salud sexual y reproductiva que tienen como destinatarias a mujeres adolescentes pobres. El recorte pone en foco el contraste entre el marco normativo y el significado que asume la maternidad para las adolescentes. Para ello, se analizan programas de salud nacionales, de la Pcia. de Buenos Aires y de la municipalidad de La Plata y discursos obtenidos en entrevistas realizadas a veinte adolescentes residentes en barrios pobres de la ciudad de La Plata. El análisis de los programas explora la incorporación del enfoque de género y la interpretación de los problemas de sexualidad/reproducción de l@s adolescentes en el marco de los derechos humanos y el de los discursos de las entrevistadas indaga su interpelación.Stigmatizing gaze of teenage motherhood and the aim to control the sexuality from the health sector, is recent and different for men and women. We know that gender and age categories, as cultural constructions that refer to basic relations of inequality-crossed by particular political-economic structures, are loaded with meanings that are settled in a social and naturalizing field predisposed to reinforce stereotypes and relations of domination. The study is placed in the general problem of aknowledgement of rights in the programs of sexual and reproductive health in adolescent girls from low environment. This frame

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

    Directory of Open Access Journals (Sweden)

    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.

  2. Larval development of Etropus longimanus (Paralichthyidae and Symphurus trewavasae (Cynoglossidae off the Buenos Aires coast, Argentina

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    Carla Derisio

    2011-11-01

    Full Text Available The larval development of Etropus longimanus and Symphurus trewavasae (Pleuronectiformes off the Buenos Aires coast was described. Both species have an elongated body; however, as the total length of Etropus longimanus larvae increased, their body became deeper. In Symphurus trewavasae the intestine was noticeably coiled. In E. longimanus the notochord flexion started at 3.9 mm and was completed at 5.0 mm standard length (SL. Vertebral formation began in larvae with a 4.6 mm SL and the definitive number of vertebrae (34-39 was observed in larvae of 4.8 mm SL. The dorsal fin had two elongated rays and the pelvic fins had only one. In Symphurus trewavasae the notochord flexion began at 5.9 mm and was completed at 8.0 mm SL. Migration of the right eye was completed in the metamorphic stage at 10.5 mm SL. Vertebral column ossification finished in flexion larvae of 6-7 mm SL, with a total number of 48-50 vertebrae. Four elongated rays of similar length were observed on the dorsal fin.

  3. Estudio observacional del consumo de plantas medicinales en la provincia de Buenos Aires, Argentina, en el periodo diciembre de 2004-noviembre de 2005

    OpenAIRE

    Consolini, Alicia E.; Ragone, María Inés; Tambussi, Claudia Patricia; Paura, Andrea

    2007-01-01

    Las plantas medicinales (PM) son muy utilizadas popularmente en la actualidad, ya sea por considerarse remedios naturales, por su bajo costo económico o por costumbre popular. Sin embargo, poco se conoce sobre el consumo de las PM en la población y sobre los posibles efectos adversos o interacciones de las PM con medicamentos. Este trabajo observacional descriptivo describe el consumo de las PM en una muestra de 259 farmacias de la provincia de Buenos Aires, Argentina, durante el período de u...

  4. Escenarios futuros para la producción de carne porcina en la región del sudeste de la provincia de Buenos Aires, Argentina

    OpenAIRE

    Oteiza Garriz, Iranzu

    2013-01-01

    En este trabajo se caracterizan y describen los sistemas de producción y comercialización de carne porcina fresca y procesada predominantes en el sudeste de la Provincia de Buenos Aires, Argentina. Además, se identifican las principales tendencias o invariantes estratégicas y las incertezas claves visualizadas por los participantes del sistema a medio plazo, para la construcción de tres escenarios futuros posibles. Para ello, a partir de información secundaria, se analizaron los cambios o...

  5. DINÁMICAS FAMILIARES, PRÁCTICAS DE CUIDADO Y RESOLUCIÓN DE PROBLEMAS ASOCIADOS AL CONSUMO INTENSIVO DE PASTA BASE/PACO EN BUENOS AIRES, ARGENTINA

    OpenAIRE

    Castilla, MarIa Victoria; Olsen, M. Celeste; Epelez, María E.

    2012-01-01

    Partiendo de los resultados de una investigación etnográfica que venimos desarrollando desde el año 2008 con poblaciones vulnerables del área metropolitana de Buenos Aires (AMBA), Argentina, en este trabajo examinamos las dinámicas vinculares de los sectores populares a la luz de las prácticas de cuidado y consumo de drogas, específicamente pasta base de cocaína -denominada localmente paco-. En particular, analizamos los modos en que el uso de drogas modela y es modelado por las característic...

  6. La circulación en la tropósfera asociada con irrupciones de aire frío en el centro de Argentina

    OpenAIRE

    Escobar, Gustavo Carlos Juan

    2001-01-01

    El objetivo de esta Tesis es definir un criterio para detectar irrupciones de aire frío en la región central de Argentina determinada por los paralelos 25°S y 45°S, y encontrar los principales modelos de circulación en la tropósfera sobre el cono sur de Sudamérica asociados con estos eventos durante los meses de Mayo a Septiembre. En primer lugar, utilizando distintos parrámetros estadísticos, se realizó una caracterización regional y temporal de la temperatura media diaria, de su variación i...

  7. Characterization and health risk assessment of VOCs in occupational environments in Buenos Aires, Argentina

    Science.gov (United States)

    Colman Lerner, J. E.; Sanchez, E. Y.; Sambeth, J. E.; Porta, A. A.

    2012-08-01

    To detect volatile organic compounds (VOCs) in indoor air in small enterprises in La Plata city and surrounding areas, sampling was conducted using passive diffusion monitors (3M-3500) and analysis of the samples were performed byCG-FID. Analytic methodology was optimized for 23 VOCs (n-alkanes, cycloalkanes, aromatic and chlorinated compounds, ketones and terpenes compounds) by determining the recovery factor and detection limit for each analyte. Different recovery values were obtained by desorbing with a mixture of dichloromethane: methanol (50:50), with a standard deviation lower than 5%. Enterprise analyzed included chemical analysis laboratories, sewing workrooms, electromechanical repair and car painting centers, take away food shops, and a photocopy center. The highest levels of VOCs were found to be in electromechanical repair and car painting centers (hexane, BTEX, CHCl3, CCl4) followed by chemical analysis laboratories and sewing workrooms. Cancer and noncancer risks were assessed using conventional approaches (HQ and LCR, US EPA) using the benzene, trichloroethylene, chloroform for cancer risk, and toluene, xylene and n-hexane, for noncancer risks as markers. The results showed different LCR for benzene and trichloroethylene between the different indoor environments analyzed (electromechanical repair and car painting center ≫ others) and chloroform (laboratory > others), but comparing with the results obtained by other research, are in similar order of magnitude for equivalents activities. Similar finding were founded for HQ. Comparing these results with the worker protection legislation the electromechanical repair and car painting center and chemical analysis laboratories are close to the limits advised by OSHA and ACGIH. These facts show the importance of the use of abatement technologies for the complete reduction of VOCs levels, to mitigate their impact in the worker's health and their venting to the atmosphere.

  8. Social and environmental health determinants and their relationship with parasitic diseases in asymptomatic children from a shantytown in Buenos Aires, Argentina

    Science.gov (United States)

    Garbossa, Graciela; Pía Buyayisqui, María; Geffner, Laura; López Arias, Ludmila; de la Fournière, Sofía; Haedo, Ana S; Marconi, Adela E; Frid, Juan C; Nesse, Alcira B; Bordoni, Noemí

    2013-01-01

    Health inequities are a common problem for all countries and are the result of not only adverse social conditions but also poor public policies. Today chronic diseases represent the most relevant threats and are a current challenge. Parasitic infections, a leading cause of child morbidity affecting low-income populations, can be transmitted because of an unhealthy environment. Notwithstanding, scarce data have been published on the epidemiological profile of intestinal parasitoses in asymptomatic children living in shantytowns. Vulnerable populations settled in slums are growing in Argentina, particularly in Buenos Aires city. Consequently, this work intended to screen healthy carriers of enteric parasites and determine the epidemiologic profile in asymptomatic children residing in one of those communities, to explore risk factors associated with the transmission of parasites, and to initiate a basic health education campaign to promote healthy behavior in the community. Fecal samples (n = 138) were analyzed by conventional parasitological methods and a survey gathered data on symptoms, family composition, and environmental and hygiene-related variables. High prevalence of feco-orally-transmitted parasitoses (83.3%) and polyparasitism were remarkable findings. The main environmental health determinants were those related to excreta disposal and water provision. Health promotion actions were performed through the diffusion of a set of posters with iconic images and brief messages for health education. Results suggest the need for an environmental sanitation policy to complement health promotion actions. It is essential to spread the results of investigations that address inequities and social determinants of health in order to integrate data with local political processes and alert on acceptable actions for developing appropriate interventions. PMID:23683369

  9. Temporal-space characterization of satellite sea surface temperature in tourist destinations: Partido de la Costa, Pinamar and Villa Gesell, Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    E. Verón

    2017-06-01

    Full Text Available The coastal spaces are fragile and complex areas that receive strong pressure because of the many uses and activities that are developed in them. The tourism of sun and beaches is one of the main economic practices present in these spaces that value the physical-natural conditions and their environmental variables. Of all of them, the sea surface temperature (SST has been the least studied variable, especially associated to tourist destinations. The coastal zone of the province of Buenos Aires, Argentina, concentrates numerous tourist centers like the Partido de la Costa, Pinamar and Villa Gesell that attract in the summer time, a great flow of population. The objective of the present paper was to perform a descriptive and comparative analysis of SST in these parties through the use of monthly satellite images obtained by the Aqua-MODIS satellite-sensor during the period 2003-2013. The results showed a spatial and seasonal behavior of the SST differentiated for the entire study area. The SST for the warm period (January-March ranged between 21.5 - 24.5°C and for the cold (July-September between 9.4 - 11.5°C. This difference was lower in the cold period, allowing distinguishing 3 thermal zones with variations smaller than 0.5°C between them: Costa Norte, Costa Centro- Costa Sur, and Pinamar-Villa Gesell. The warm period presented more intense spatial thermal variations between the studied tourist destinations. Four thermal zones with 0.5°C differences were identified: Costa Norte, Costa Centro, Costa Sur, and Pinamar-Villa Gesell.

  10. Selección de dormideros por el estornino pinto (Sturnus vulgaris) en La Plata, Buenos Aires, Argentina

    OpenAIRE

    Girini, Juan Manuel; Palacio, Facundo Xavier; del Huerto, María del C.; Kuzmanich, Nicolás

    2016-01-01

    El Estornino Pinto (Sturnus vulgaris) es un ave introducida en Argentina que establece dormideros comunales durante la época no reproductiva. A pesar de ser una de las especies invasoras más perjudiciales del mundo, se conoce muy poco acerca de su ecología en Argentina. En este trabajo se caracterizaron los dormideros comunales del Estornino Pinto en la ciudad de La Plata con el objetivo de evaluar la selección del sitio de dormidero por parte de la especie. Se encontró un total de 34 dormide...

  11. Selección de dormideros por el Estornino Pinto (Sturnus vulgaris) en La Plata, Buenos Aires, Argentina

    OpenAIRE

    Girini, Juan M; Palacio, Facundo X; del Huerto, María del C; Kuzmanich, Nicolás

    2014-01-01

    El Estornino Pinto (Sturnus vulgaris) es un ave introducida en Argentina que establece dormideros comunales durante la época no reproductiva. A pesar de ser una de las especies invasoras más perjudiciales del mundo, se conoce muy poco acerca de su ecología en Argentina. En este trabajo se caracterizaron los dormideros comunales del Estornino Pinto en la ciudad de La Plata con el objetivo de evaluar la selección del sitio de dormidero por parte de la especie. Se encontró un total de 34 dormide...

  12. Diversidad de helechos y licófitas de la Reserva Natural Punta Lara, Buenos Aires, Argentina

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    Gabriela E Giudice

    2011-09-01

    Full Text Available Hasta el año 1987 el número de helechos y licofitas citados para la Reserva Punta Lara era de 30, incluyendo taxa específicos e infraespecíficos. El objetivo de este trabajo fue evaluar la diversidad de los helechos y licofitas que crecen en esta reserva, donde se halla el relicto más austral de las selvas en galería. Para llevar a cabo este estudio se realizaron viajes de campo durante los años 2006-2009 y se consultaron herbarios locales así como bibliografía especializada. Como resultado del estudio se determinaron 24 taxa de helechos y licofitas, de hábito predominantemente terrestre (70%; pocas acuáticas (17% y epífitas (13%; dos especies exóticas, mientras que otras dos especies nativas citadas previamente no fueron halladas. Cinco taxa fueron registrados con escasa frecuencia. Se infiere que las principales causas de amenaza para las poblaciones de licofitas y helechos en la Reserva Natural Punta Lara son la extracción para su comercialización, la introducción de plantas exóticas y las fluctuaciones climáticas (periodos de sequía. Se presenta una clave de identificación de los taxa registrados y se plantean futuras estrategias de conservación de las especies consideradas vulnerables.Diversity of ferns and lycophytes from Reserva Natural Punta Lara, Buenos Aires , Argentina. Punta Lara Natural Reserve shelters the relict of the Southernmost riparian forest in the world, where the flora is threatened by the anthropic expansion and by the introduction of exotic species. In this area the ferns and lycophytes grow in particular environments as marshland, grassland and marginal forest. The aim of this work was to evaluate the diversity of ferns and lycophytes that inhabit in Punta Lara Natural Reserve. Field trips were conducted from 2006 to 2009 and local herbaria and specific bibliography were also revised. As a result of our study twenty four taxa of ferns and lycophytes were recognized. Their habit was mainly

  13. Percepción ambiental de productores agropecuarios y docentes rurales del partido de Arrecifes, Buenos Aires (Argentina

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    Graciela Maria Sardi

    2012-12-01

    Full Text Available En la región pampeana el avance de la agricultura sobre los suelos ganaderos, la incorporación de tecnología en la agricultura con creciente uso de agroquímicos y el deficiente manejo de efluentes en las producciones intensivas ganaderas, incrementan el riesgo de contaminación del agua. Se analizó la percepción ambiental de productores agropecuarios y docentes del ámbito rural del partido de Arrecifes (Buenos Aires, Argentina para planificar el desarrollo  de acciones de capacitación que puedan ser implementadas con cada uno de los grupos de actores sociales entrevistados. En un proyecto de gestión del agua (2001-2004 se recopiló información por medio de encuestas (2002 abarcando las siguientes temáticas: -Identificación de los principales problemas ambientales regionales, -Su ponderación por escala de gravedad, -Identificación de sus  consecuencias ambientales y  soluciones, - Percepción y conocimiento sobre los beneficios que aportan y perjuicios que afectan al agua superficial y subterránea, -Actitudes diarias que puedan perjudicar o favorecer la calidad del agua  e -Interés por recibir capacitación e información sobre los aspectos vinculados al cuidado y utilización de este recurso. Para el análisis de resultados se utilizó estadística descriptiva y  prueba de Fisher (?= 5%. Los encuestados (n=95 43.2 % productores 56.8 % docentes perciben problemas, proponen soluciones y actúan de acuerdo al grupo social al que pertenecen. Los productores poseen una mirada produccionista, ignorando las causas reales de la problemática del agua incriminando muchas veces a factores climáticos, como causantes de la degradación de los recursos naturales y proponiendo soluciones de índole educativas. Los docentes tienen una mirada más amplia y social, proponen soluciones económicas y tecnológicas, y creen que éstas son funciones privativas de los tomadores de decisiones.  Conocer la percepción de aquellos que hacen al

  14. Hyperfine and radiological characterization of soils of the province of Buenos Aires, Argentina

    Science.gov (United States)

    Montes, M. L.; Taylor, M. A.; Mercader, R. C.; Sives, F. R.; Desimoni, J.

    2010-03-01

    The depth profile concentration of both natural and anthropogenic gamma-ray-emitter nuclides were determined in soil samples collected in an area located at 34° 54.452' S, 58° 8.365' W, down to 50 cm in depth, using an hyper-pure Ge spectrometer. The soil samples were also characterized by means of Mössbauer spectrometry and X-ray diffraction. The activities of 238U and 232Th natural chains remain constant in depth at 41 Bq/kg and 46 Bq/kg, respectively, while the 40K activity increases from 531 Bq/kg to 618 Bq/kg between 2.5 cm y 25.5 cm of depth. The only anthropogenic detected nuclide is 137Cs, whose activity changes form 1.4 Bq/kg to values lower than the detection limit (LD) for depths below 25 cm, exhibiting a maximum at 10 cm beneath the surface. The Mössbauer spectra show two magnetic sextets associated with α-Fe2O3 and Fe3O4, as well as two Fe+3 Fe+2 doublets, probably originated in octahedral and tetrahedral sites of paramagnetic phases. The Fe3+ paramagnetic signal relative fraction increases up to 82% at the expense of the α-Fe2O3 one when de depth increases. No correlation between Fe3O4 and the 137Cs was identificated.

  15. Material tipo de la Colección de Herpetología del Museo de La Plata, Buenos Aires, Argentina

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    Ferraro, Daiana Paola

    2005-12-01

    Full Text Available El Museo de la Plata (Buenos Aires, República Argentina se fundó en 1889, y la colección herpetológica comenzó a funcionar poco tiempo después, bajo la responsabilidad deJulio G. Koslowsky. En esta contribución se listan los ejemplares tipo de Anfibios y Reptiles depositados en la colección herpetológica del Museo de La Plata. El material tipo depositado corresponde a 32 especies descriptas desde 1895 hasta la actualidad, incluyendo: 14 holotipos, 115 paratipos, 4 lectotipos, 22 paralectotipos, 1 neotipo y 12 sintipos (sin incluir los ejemplares extraviados. Se proporciona, para cada taxón, la información completa referida a estatus de cada ejemplar tipo, sexo, datos de recolección y modificaciones taxonómicas posteriores. The La Plata Museum (Buenos Aires, República Argentina was founded on 1889, and after a little time, the herpetological collection started under the responsibility of Julio G. Koslowsky. In this paper the type specimens of Amphibia and Reptilia housed in the collection of the Herpetology Section at the La Plata Museum are listed. These type materials correspondto 32 species described since 1895 until nowadays, and include: 14 holotypes, 115 paratypes, 4 lectotypes, 22 paralectotypes, 1 neotype and 12 sintypes (this list does not include lost specimens. Complete data about taxonomic status, sex, collection data, and subsequent taxonomic changes are given for each taxon.

  16. Touristic resources and factor intensity: Dominant factor content of trade in tourism. The case of the municipalities of Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Natalia Porto

    2016-01-01

    Full Text Available The aim of this paper is to quantify one of the characteristics of the production function of the tourism sector in the province of Buenos Aires: the dominant factor content of their touristic resources, one simplified concept which shows the factors of production incorporated in goods. For its estimation and the touristic characterization of the different municipalities of the province, the following elements are used: the inventory of touristic resources of 134 municipalities of the province; their classification into the five categories listed by OEA; and the factor intensity of each category. One interesting result is that most municipalities with high touristic GDP show a dominant factor content of capital, the implication being that comparative advantage in the Province of Buenos Aires in Argentina is based on contemporary technical, scientific and artistic work. It may be concluded that there is place to exploit tourism in Argentina, what points to the need to accompany them with a correct design of public policies.

  17. Salud mental y nuevas complementariedades terapéuticas. La experiencia en dos hospitales públicos de Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    María Mercedes Saizar

    2013-01-01

    Full Text Available En las últimas décadas las terapias alternativas se han convertido en una opción cada vez más frecuente entre la población general de las ciudades industrializadas, aunque su aceptación como opciones válidas en el sistema de salud aún se encuentra en discusión. A pesar de ello, en la Ciudad de Buenos Aires (Argentina han surgido talleres dentro de los hospitales generales que ofertan terapias alternativas/complementarias, asociadas a servicios o profesionales de la salud mental. A partir de un estudio cualitativo en dos hospitales públicos de la Ciudad Autónoma de Buenos Aires, indagaremos los motivos que dan origen a dicho fenómeno, destacando las formas de expresión que adquiere y la complejidad de un campo en construcción.

  18. Yellow fever vaccine-associated adverse events following extensive immunization in Argentina.

    Science.gov (United States)

    Biscayart, Cristián; Carrega, María Eugenia Pérez; Sagradini, Sandra; Gentile, Angela; Stecher, Daniel; Orduna, Tomás; Bentancourt, Silvia; Jiménez, Salvador García; Flynn, Luis Pedro; Arce, Gabriel Pirán; Uboldi, María Andrea; Bugna, Laura; Morales, María Alejandra; Digilio, Clara; Fabbri, Cintia; Enría, Delia; Diosque, Máximo; Vizzotti, Carla

    2014-03-05

    As a consequence of YF outbreaks that hit Brazil, Argentina, and Paraguay in 2008-2009, a significant demand for YF vaccination was subsequently observed in Argentina, a country where the usual vaccine recommendations are restricted to provinces that border Brazil, Paraguay, and Bolivia. The goal of this paper is to describe the adverse events following immunization (AEFI) against YF in Argentina during the outbreak in the northeastern province of Misiones, which occurred from January 2008 to January 2009. During this time, a total of nine cases were reported, almost two million doses of vaccine were administered, and a total of 165 AEFI were reported from different provinces. Case study analyses were performed using two AEFI classifications. Forty-nine events were classified as related to the YF vaccine (24 serious and 1 fatal case), and 12 events were classified as inconclusive. As the use of the YF 17D vaccine can be a challenge to health systems of countries with different endemicity patterns, a careful clinical and epidemiological evaluation should be performed before its prescription to minimize serious adverse events. Copyright © 2014 Elsevier Ltd. All rights reserved.

  19. Chlorococcales nuevas para el embalse Paso de las Piedras (Buenos Aires, Argentina New Chlorococcales for Paso de las Piedras Reservoir (Buenos Aires, Argentine

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    Carolina Fernández

    2005-12-01

    Full Text Available En el presente trabajo se citan e ilustran 22 especies pertenecientes al orden Chlorococcales (Chlorophyceae, Chlorophyta halladas en el embalse Paso de las Piedras que representan nuevas citas para este ambiente. Pseudokirchneriella subcapitata, Tetraedron hemisphaericum y Scenedesmus semipulcher constituyen nuevas citas para la República Argentina.In this paper, we record and illustrate 22 species of Chlorococcales (Chlorophyceae, Chlorophyta found in Paso de las Piedras Reservoir, which are new records for this area. Pseudokirchneriella subcapitata, Tetraedron hemisphaericum and Scenedesmus semipulcher are new for Argentina.

  20. 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

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    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

  1. Proceedings of the Combined 20th International Workshop on Expressiveness in Concurrency and 10th Workshop on Structural Operational Semantics (EXPRESS/SOS 2013, Buenos Aires, Argentina, August 26, 2013)

    NARCIS (Netherlands)

    Borgström, J.; Luttik, B.

    2013-01-01

    This volume contains the proceedings of the Combined 20th International Workshop on Expressiveness in Concurrency and the 10th Workshop on Structural Operational Semantics (EXPRESS/SOS 2013) which was held on 26th August, 2013 in Buenos Aires, Argentina, as an affiliated workshop of CONCUR 2013, the

  2. Surface deformation associated with the November 23, 1977, Caucete, Argentina, earthquake sequence

    Science.gov (United States)

    Kadinsky-Cade, K.; Reilinger, R.; Isacks, B.

    1985-01-01

    The 1977 Caucete (San Juan) earthquake considered in the present paper occurred near the Sierra Pie de Palo in the Sierras Pampeanas tectonic province of western Argentina. In the study reported, coseismic surface deformation is combined with seismic observations (main shock and aftershocks, both teleseismic and local data) to place constraints on the geometry and slip of the main fault responsible for the 1977 earthquake. The implications of the 1977 event for long-term crustal shortening and earthquake recurrence rates in this region are also discussed. It is concluded that the 1977 Caucete earthquake was accompanied by more than 1 m of vertical uplift.

  3. Molecular typing of Treponema pallidum isolates from Buenos Aires, Argentina: Frequent Nichols-like isolates and low levels of macrolide resistance.

    Directory of Open Access Journals (Sweden)

    Lucía Gallo Vaulet

    Full Text Available A total of 54 clinical samples, including genital lesion swabs, whole blood and cerebrospinal fluid from patients diagnosed with syphilis were collected in 2006 and in 2013 in Buenos Aires, Argentina. Treponemal DNA was detected in 43 of the analyzed samples (79.6% and further analyzed using Sequencing-based molecular typing (SBMT and Enhanced CDC-typing (ECDCT. By SBMT, 10 different Treponema pallidum subsp. pallidum (TPA genotypes were found, of which six were related to the TPA SS14 strain, and four to the TPA Nichols strain. The 23S rRNA gene was amplified in samples isolated from 42 patients, and in six of them (14.3%, either the A2058G (four patients, 9.5% or the A2059G (two patients, 4.8% mutations were found. In addition to Taiwan, Madagascar and Peru, Argentina is another country where the prevalence of Nichols-like isolates (26.8% is greater than 10%.

  4. Hepatitis C virus diversification in Argentina: comparative analysis between the large city of Buenos Aires and the small rural town of O'Brien.

    Science.gov (United States)

    Golemba, Marcelo D; Culasso, Andrés C A; Villamil, Federico G; Bare, Patricia; Gadano, Adrián; Ridruejo, Ezequiel; Martinez, Alfredo; Di Lello, Federico A; Campos, Rodolfo H

    2013-01-01

    The estimated prevalence of HCV infection in Argentina is around 2%. However, higher rates of infection have been described in population studies of small urban and rural communities. The aim of this work was to compare the origin and diversification of HCV-1b in samples from two different epidemiological scenarios: Buenos Aires, a large cosmopolitan city, and O'Brien, a small rural town with a high prevalence of HCV infection. The E1/E2 and NS5B regions of the viral genome from 83 patients infected with HCV-1b were sequenced. Phylogenetic analysis and Bayesian Coalescent methods were used to study the origin and diversification of HCV-1b in both patient populations. Samples from Buenos Aires showed a polyphyletic behavior with a tMRCA around 1887-1900 and a time of spread of infection approximately 60 years ago. In contrast, samples from ÓBrien showed a monophyletic behavior with a tMRCA around 1950-1960 and a time of spread of infection more recent than in Buenos Aires, around 20-30 years ago. Phylogenetic and coalescence analysis revealed a different behavior in the epidemiological histories of Buenos Aires and ÓBrien. HCV infection in Buenos Aires shows a polyphyletic behavior and an exponential growth in two phases, whereas that in O'Brien shows a monophyletic cluster and an exponential growth in one single step with a more recent tMRCA. The polyphyletic origin and the probability of encountering susceptible individuals in a large cosmopolitan city like Buenos Aires are in agreement with a longer period of expansion. In contrast, in less populated areas such as O'Brien, the chances of HCV transmission are strongly restricted. Furthermore, the monophyletic character and the most recent time of emergence suggest that different HCV-1b ancestors (variants) that were in expansion in Buenos Aires had the opportunity to colonize and expand in O'Brien.

  5. Argentina: Background and U.S. Relations

    Science.gov (United States)

    2008-11-05

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

  6. 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...

  7. First record of Aleiodes laphygmae (Hymenoptera: Braconidae) for Argentina and its association with larvae of Spodoptera eridania (Lepidoptera: Noctuidae)

    OpenAIRE

    Valverde, Liliana; Berta, D. Carolina; Gomez, Marcelo Geronimo

    2012-01-01

    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) (Le...

  8. Coleópteros acuáticos y semiacuáticos del Parque Provincial Ernesto Tornquist (Provincia de Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Liliana A. FERNÁNDEZ

    2010-01-01

    Full Text Available Se presenta el primer relevamiento de coleópteros acuáticos y semiacuáticos del Parque Provincial Ernesto Tornquist. El material entomológico estudiado se obtuvo durante las campañas de recolección de insectos acuáticos, realizadas entre los años 2005 y 2007, en las cuatro estaciones del año. Los ambientes estudiados fueron los arroyos Ventana, El Loro, Sauce Grande y dos charcos temporarios. Se identificaron en total 5.200 ejemplares pertenecientes a 9 familias, 20 géneros y 34 especies. Se brinda el listado de las especies y su distribución en la Argentina. Se citan, por primera vez para el parque, 23 especies y por primera vez para la Provincia de Buenos Aires: Austrelmis sp. e Hydrochus stolpi Germain.

  9. [The evaluation of psychological development in the dispensarios de lactantes (infant and toddler clinics) in Buenos Aires: medicine and psychology in Argentina, 1935-1942].

    Science.gov (United States)

    Briolotti, Ana

    2016-01-01

    This article explores the medical use of techniques for psychological evaluation in the dispensarios de lactantes (infant and toddler clinics) in Buenos Aires within the framework of historical studies of psychology in Argentina. It analyzes the institutional environment in order to shed light on the framework of discourses within which the interest in controlling psychological development may be situated. It studies the tests used, the characteristics of application and the most significant results. It explores the vicissitudes of the professional field, in the light of which psychology was useful for consolidating the legitimacy of medical knowledge. It points out a divergence between this medical use of psychology and the production and circulation of psychological knowledge in academic and educational environments.

  10. Childhood astrovirus-associated diarrhea in the ambulatory setting in a Public Hospital in Cordoba city, Argentina

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    Giordano Miguel O.

    2004-01-01

    Full Text Available Human astroviruses have been increasingly identified as important agents of diarrheal disease in children. However, the disease burden of astrovirus infection is still incompletely assessed. This paper reports results on the epidemiological and clinical characteristics of astrovirus-associated diarrhea, as well as the impact of astrovirus infection on the ambulatory setting at a Public Hospital in Córdoba city, Argentina. From February 2001 through January 2002, 97 randomly selected outpatient visits for diarrhea among children 0.05. According to our estimation about one out of seventy-four children in this cohort would be assisted annually for an astroviral-diarrheal episode in the Public Hospital and one out of eight diarrheal cases could be attributed to astrovirus infection. Astrovirus is a common symptomatic infection in pediatric outpatient visits in the public hospital in the study area, contributing 12.37% of the overall morbidity from diarrhea.

  11. 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.

  12. Epidermal characteristics of toxic plants for cattle from the Salado River basin (Buenos Aires, Argentina Caracteres epidérmicos de las plantas tóxicas para el ganado de la Depresión del Salado (Buenos Aires, Argentina

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    Susana E. Freire

    2005-12-01

    Full Text Available One hundred and eighty species belonging to 41 families inhabiting the Salado River Basin of the province of Buenos Aires (Argentina were previously reported to be toxic for cattle. The purpose of this study was to provide a tool to distinguish the taxa when the plant material is desintegrated. In this way, an approach to the identification of these taxa through leaf epidermal features (anticlinal epidermal cell wall patterns, cuticular ornamentation, stomata, and hair types is performed. A key to the 180 species as well as illustrations of diagnostic characters are given.Las plantas tóxicas para el ganado están representadas en la Depresión del Salado (provincia de Buenos Aires, Argentina por 180 especies pertenecientes a 41 familias. El objetivo del presente trabajo es determinar estos taxa a partir de material desintegrado, utilizando caracteres epidérmicos foliares (paredes anticlinales de las células epidérmicas, ornamentación de la cutícula, tipos de estomas y pelos. Se brinda una clave para la determinación de las especies e ilustraciones de los caracteres diagnósticos.

  13. Risk factors associated with the presence of Varroa destructor in honey bee colonies from east-central Argentina.

    Science.gov (United States)

    Giacobino, A; Bulacio Cagnolo, N; Merke, J; Orellano, E; Bertozzi, E; Masciangelo, G; Pietronave, H; Salto, C; Signorini, M

    2014-08-01

    Varroa destructor is considered one of the major threats for worldwide apiculture. Damage caused by varroa mite includes body weight loss, malformation and weakening of the bees. It was also suggested as the main cause associated with colony winter mortality and as an important vector for several honey bee viruses. Little is known about multiple factors and their interaction affecting V. destructor prevalence in apiaries from South America. The aim of this study was to identify risk factors associated with V. destructor prevalence in east-central Argentina. Parasitic mite infestation level and colony strength measures were evaluated in 63 apiaries distributed in 4 different regions in east-central Argentina in a cross sectional study. Data regarding management practices in each apiary were collected by means of a questionnaire. A mixed-effects logistic regression model was constructed to associate management variables with the risk of achieving mite infestation higher than 3%. Colonies owned by beekeepers who indicated that they did not monitor colonies after mite treatment (OR=2.305; 95% CI: 0.944-5.629) nor disinfect hives woodenware material (OR=2.722; 95% CI: 1.380-5.565) were associated with an increased risk of presenting high intensity infestation with V. destructor (>3%). On the other hand, beekeepers who reported replacing more than 50% of the queens in their operation (OR=0.305; 95% CI: 0.107-0.872), feeding colonies protein substitute containing natural pollen (OR=0.348; 95% CI: 0.129-0.941) and feeding colonies High Fructose Corn Syrup (HFCS) (OR=0.108; 95% CI: 0.032-0.364), had colonies that were less likely to have V. destructor infestations above 3%, than beekeepers who did not report using these management practices. Further research should be conducted considering that certain management practices were associated to mite infestation level in order to improve the sanitary condition in the colonies. Epidemiological studies provide key information to

  14. Use of respondent driven sampling (RDS generates a very diverse sample of men who have sex with men (MSM in Buenos Aires, Argentina.

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    Alex Carballo-Diéguez

    Full Text Available Prior research focusing on men who have sex with men (MSM conducted in Buenos Aires, Argentina, used convenience samples that included mainly gay identified men. To increase MSM sample representativeness, we used Respondent Driven Sampling (RDS for the first time in Argentina. Using RDS, under certain specified conditions, the observed estimates for the percentage of the population with a specific trait are asymptotically unbiased. We describe, the diversity of the recruited sample, from the point of view of sexual orientation, and contrast the different subgroups in terms of their HIV sexual risk behavior.500 MSM were recruited using RDS. Behavioral data were collected through face-to-face interviews and Web-based CASI.In contrast with prior studies, RDS generated a very diverse sample of MSM from a sexual identity perspective. Only 24.5% of participants identified as gay; 36.2% identified as bisexual, 21.9% as heterosexual, and 17.4% were grouped as "other." Gay and non-gay identified MSM differed significantly in their sexual behavior, the former having higher numbers of partners, more frequent sexual contacts and less frequency of condom use. One third of the men (gay, 3%; bisexual, 34%, heterosexual, 51%; other, 49% reported having had sex with men, women and transvestites in the two months prior to the interview. This population requires further study and, potentially, HIV prevention strategies tailored to such diversity of partnerships. Our results highlight the potential effectiveness of using RDS to reach non-gay identified MSM. They also present lessons learned in the implementation of RDS to recruit MSM concerning both the importance and limitations of formative work, the need to tailor incentives to circumstances of the less affluent potential participants, the need to prevent masking, and the challenge of assessing network size.

  15. Mortandad masiva de mesodesma mactroides (bivalvia: mactracea) en el partido de la Costa, Buenos Aires, Argentina, en septiembre 2004

    OpenAIRE

    Thompson, Gustavo; Bock, Mariana Federica Sánchez de

    2007-01-01

    La almeja amarilla Mesodesma mactroides ha sido diezmada por vários eventos de mortandad masiva a lo largo de su distribución en Brasil, Uruguay y Argentina. Este estudio evalúa y compara la concentración de As, Cd, Cr, Cu, Ni, Pb y Zn, em los tejidos de las almejas colectadas durante un evento de mortandad en Septiembre 2004 y un año después. La cuantificación de los metales se realizó por digestión ácida y posterior determinación por espectrometría. Los valores de Cd, Cu y Pb (11 ± 2, 42 ± ...

  16. A multimodal intervention to improve hand hygiene in ICUs in Buenos Aires, Argentina: a stepped wedge trial.

    Science.gov (United States)

    Rodriguez, Viviana; Giuffre, Carolina; Villa, Silvia; Almada, Griselda; Prasopa-Plaizier, Nittita; Gogna, Monica; Gibbons, Luz; García Elorrio, Ezequiel

    2015-10-01

    Hand hygiene is a cost-effective measure to reduce microbial transmission (Teare EL, Cookson B, French GL, et al. UK handwashing initiative. J Hosp Infect. 1999;43:1-3.) and is considered to be the most important measure to prevent healthcare-associated infections (Pittet D, Allegranzi B, Sax H, Evidence-based model for hand transmission during patient care and the role of improved practices. Lancet Infect Dis 2006;6:641-52). Unfortunately, the compliance rate of healthcare workers (HCWs) with recommended hand hygiene procedures is less than expected. In order to estimate the effect of a multimodal intervention on improving healthcare workers' compliance with hand hygiene in eleven intensive care units (ICUs) from 11 hospitals of Buenos Aires, a randomized cluster-stepped wedge trial was designed. A multimodal intervention was designed based on practices characterized by being evidence-based, low cost and suggested by qualitative research: (i) leadership commitment, (ii) surveillance of materials needed to comply with hand hygiene and alcohol consumption, (iii) utilization of reminders, (iv) a storyboard of the project and (v) feedback (hand hygiene compliance rate). The study enrolled 705 participants, comprising nurses (66.4%), physicians (25.8%) and other HCW (7.8%) along 9 months of observation. Compliance with hand hygiene in the control group was 66.0% (2354/3565) vs. 75.6% (5190/6864) in the intervention group. Univariate analysis showed an association between the intervention and hand hygiene compliance (odds ratio, OR 1.17; 95% confidence interval (CI), 1.13-1.22). The effect was still present after adjustment by calendar's time and providers' characteristics-age, gender and profession (OR 1.08; 95% CI, 1.03-1.14). His study supports that a multimodal intervention was effective to improve compliance with hand hygiene in ICUs. © The Author 2015. Published by Oxford University Press in association with the International Society for Quality in Health Care

  17. La cuenca del río Reconquista en la planificación metropolitana de Buenos Aires (Argentina. Ámbito, problemas y propuestas

    Directory of Open Access Journals (Sweden)

    Alejandra Potocko

    2017-07-01

    Full Text Available Resumen La cuenca del río Reconquista es una de las tres grandes cuencas de la Región Metropolitana de Buenos Aires (Argentina gravemente afectada por las inundaciones y por la contaminación. En tanto pieza territorial de la ciudad metropolitana, la cuenca Reconquista fue abordada en los documentos de planificación urbana que se elaboraron para la región durante la segunda mitad del siglo XX: el Plan Regulador de Buenos Aires, el Esquema Director Año 2000, el Estudio del Sistema Metropolitano Bonaerense y el Proyecto 90. Independientemente de que se hayan concretado o no, esas instancias de planificación ilustran las formas de pensar y operar en la cuenca, como un ámbito dentro de la ciudad, como un problema de alcance metropolitano y como una propuesta de transformación territorial, en tres momentos: el de las inundaciones y la hidráulica, el del medio ambiente y la calidad de vida, y el de la ecología y el paisaje, donde cambian las relaciones que se establecen entre la urbanización, el urbanismo y las cuencas hídricas.

  18. Autonomía educativa en la provincia de Buenos Aires, Argentina: comparación entre dos distritos escolares. Una perspectiva neo-institucionalista

    Directory of Open Access Journals (Sweden)

    M. Fernanda Astiz

    2015-09-01

    Full Text Available RESUMEN: El presente artículo aporta evidencia empírica sobre políticas adoptadas, resultados y consecuencias de las iniciativas de descentralización y autonomía educativa implementadas en Argentina en los años noventa. Este estudio realiza una evaluación de las implicancias del concepto de autonomía educativa en el país y de cómo fue adoptado tanto a nivel provincial como en las escuelas. Utilizando un paradigma neo-institucionalista, y mediante el uso de fuentes de información fidedignas de la provincia de Buenos Aires y de dos distritos escolares del Gran Buenos Aires, el estudio analiza la función que los factores organizativos cumplen en la implementación de la reforma. El objetivo de la presente investigación es analizar en forma comparativa las características institucionales y las consecuencias que las mismas acarrean en distritos que atienden poblaciones sociopolíticas diferentes.

  19. Prevalencia y estacionalidad de la Pediculosis capitis en la población infante-juvenil de la region sanitaria, Buenos Aires, Argentina

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    Castro Dolores del C.

    1994-01-01

    Full Text Available Se estudió la prevalencia de la Pediculosis capitis como enfermedad parasitaria durante el año calendario 1-8-1992 al 31-7-1993, en la Región Sanitaria XI de la provincia de Buenos Aires, Argentina, que comprende 15 partidos del Este Noreste de la provincia de Buenos Aires y otras zonas de influencia del Hospital Interzonal de Agudos, Especialidad Pediatría "Sor María Ludovica", cabecera de dicha Región Sanitaria. Se examinaron un total de 552 individuos de nivel social medio a medio bajo de la población infanto-juvenil de O a 16 años, tomados al azar en 52 muestreos semanales consecutivos, considerándose como positivos para esta enfermedad a aquellos parasitados al momento del diagnóstico. Los resultados se expresan en términos de prevalencia analizándose su variación mensual y estacional. La prevalencia fue relativamente alta en todos los meses, con valores mínimos en febrero (12% y máximos en agosto (56,8%, siendo la media anual de 38,04% (+/- 4,05. Estacionalmente, su menor valor corresponde al Verano (16,8%, siendo muy semejantes los valores para las restantes estaciones, manteniéndose siempre superiores al 38%.

  20. Vaccination coverage among children aged 13 to 59 months in Buenos Aires, Argentina, 2002 La cobertura de la vacunación en niños de 13 a 59 meses de edad en Buenos Aires, Argentina, en 2002

    Directory of Open Access Journals (Sweden)

    Gustavo H. Dayan

    2004-09-01

    Full Text Available OBJECTIVES: To estimate antigen-specific and series-complete vaccination coverage among children aged 13 to 59 months in Buenos Aires; to compare the results of a community-based household survey with coverage rates obtained from administrative records; and to identify risk factors for incomplete vaccination. METHODS: Census tracts in Buenos Aires were surveyed systematically in March and April, 2002. Three children aged 13 to 24 months and 25 to 59 months were surveyed per block in each census tract. Written documentation of vaccination was required. Risk factors associated with incomplete vaccination were identified with univariate analysis and multivariate logistic regression. RESULTS: A total of 1391 children were surveyed. Antigen-specific coverage ranged from 69.4% (95% CI 66.7%-72% for Haemophilus influenzae type b vaccination to 99% (95% CI 98.4%-99.6% for BCG vaccination. Except for measles, coverage estimates found in the survey did not differ substantially from those obtained from city health authority records. Multivariate logistic regression analysis showed child's age (P OBJETIVOS: Calcular la cobertura con el régimen de vacunación completo y con vacunas contra antígenos particulares en niños de 13 a 59 meses de edad en Buenos Aires; comparar los resultados de una encuesta comunitaria a domicilio con los porcentajes de cobertura indicados en los registros públicos; e identificar los factores que ponen a los niños en riesgo de no recibir todas las dosis de vacunas recomendadas bajo el régimen oficial. MÉTODOS: Se encuestaron sistemáticamente los corredores censales en Buenos Aires en marzo y abril de 2002. En cada cuadra de cada corredor censal se encuestó a tres niños entre las edades de 13 a 24 meses y de 25 a 29 meses. Se solicitaba ver una constancia de vacunación escrita. Se identificaron factores de riesgo asociados con la falta de vacunación completa mediante un análisis unifactorial y regresión log

  1. Hepatitis C virus diversification in Argentina: comparative analysis between the large city of Buenos Aires and the small rural town of O'Brien.

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    Marcelo D Golemba

    Full Text Available BACKGROUND: The estimated prevalence of HCV infection in Argentina is around 2%. However, higher rates of infection have been described in population studies of small urban and rural communities. The aim of this work was to compare the origin and diversification of HCV-1b in samples from two different epidemiological scenarios: Buenos Aires, a large cosmopolitan city, and O'Brien, a small rural town with a high prevalence of HCV infection. PATIENTS AND METHODS: The E1/E2 and NS5B regions of the viral genome from 83 patients infected with HCV-1b were sequenced. Phylogenetic analysis and Bayesian Coalescent methods were used to study the origin and diversification of HCV-1b in both patient populations. RESULTS: Samples from Buenos Aires showed a polyphyletic behavior with a tMRCA around 1887-1900 and a time of spread of infection approximately 60 years ago. In contrast, samples from ÓBrien showed a monophyletic behavior with a tMRCA around 1950-1960 and a time of spread of infection more recent than in Buenos Aires, around 20-30 years ago. CONCLUSION: Phylogenetic and coalescence analysis revealed a different behavior in the epidemiological histories of Buenos Aires and ÓBrien. HCV infection in Buenos Aires shows a polyphyletic behavior and an exponential growth in two phases, whereas that in O'Brien shows a monophyletic cluster and an exponential growth in one single step with a more recent tMRCA. The polyphyletic origin and the probability of encountering susceptible individuals in a large cosmopolitan city like Buenos Aires are in agreement with a longer period of expansion. In contrast, in less populated areas such as O'Brien, the chances of HCV transmission are strongly restricted. Furthermore, the monophyletic character and the most recent time of emergence suggest that different HCV-1b ancestors (variants that were in expansion in Buenos Aires had the opportunity to colonize and expand in O'Brien.

  2. Environmental Exposure to Manganese in Air: Associations ...

    Science.gov (United States)

    Manganese (Mn), an essential element, can be neurotoxic in high doses. This cross-sectional study explored the oognitive function of adults residing in two towns (Marietta and East Liverpool, Ohio, USA) identified as having high levels of environmental airborne Mn from industrial sources. Air-Mn site surface emissions method modeling for total suspended particulate (TSP) ranged from 0.03 to 1.61 µg/m(3) in Marietta and 0.01-6.32 µg/m(3) in East Liverpool. A comprehensive screening test battery of cognitive function, including the domains of abstract thinking, attention/concentration, executive function and memory was administered. The mean age of the participants was 56 years (±10.8 years). Participants were mostly female (59.1) and primarily white (94.6%). Significant relationships (pworking and visuospatial memory (e.g., Rey-0 Immediate B3=0.19, Rey-0 Delayed B3=0.16) and verbal skills (e.g., Similarities B3=0.19). Using extensive cognitive testing and computer modeling of 10-plus years of measured air monitoring data, this study suggests that long-term environmental exposure to high levels of air-Mn, the exposure metric of this paper, may result in mild deficits of cognitive function in adult populations. This study addresses research questions under Sustainable and Healthy Communities (2.2.1.6 lessons learned, best practices and stakeholder feedback from community and tribal participa

  3. 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

    Directory of Open Access Journals (Sweden)

    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

  4. Associations of outdoor air pollution with hemorrhagic stroke mortality.

    Science.gov (United States)

    Yorifuji, Takashi; Kawachi, Ichiro; Sakamoto, Tetsuro; Doi, Hiroyuki

    2011-02-01

    Evidence linking short-term exposure to outdoor air pollution with hemorrhagic stroke is inconsistent. We evaluated the associations between outdoor air pollution and specific types of stroke in Tokyo, Japan, from April 2003 to December 2008. We obtained daily counts of stroke mortality (n = 41,440) and concentrations of nitrogen dioxide as well as particles less than 2.5 μm in diameter. Time-series analysis was employed. Although same-day air pollutants were positively associated with ischemic stroke and intracerebral hemorrhage mortality, both air pollutants were more strongly associated with subarachnoid hemorrhage mortality: rate ratio was 1.041 (95% confidence interval: 1.011-1.072) for each 10 μg/m3 increase in the previous-day particles less than 2.5 μm. This study suggests that short-term exposure to outdoor air pollution increases the risks of hemorrhagic stroke mortality as well as ischemic stroke mortality.

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

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    Marina Stein

    2002-10-01

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

  6. Dinámicas familiares, prácticas de cuidado y resolución de problemas asociados al consumo intensivo de pasta base/paco en Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    María Victoria Castilla

    2012-06-01

    Full Text Available Based on the results of an ethnographic research that we are carrying out since 2008 with vulnerable population in Buenos Aires, Argentina, in this article we examine social and familiar bonds from the perspective of drug use, specifically pasta base -called paco. Particularly, we analyze the way that drug use shapes and is shaped by the characteristics of social and familiar bonds.

  7. La investigación bibliotecológica en el Instituto de Formación Técnica Superior (IFTS) nº 13, Buenos Aires, Argentina

    OpenAIRE

    Díaz-Jatuf, Julio

    2010-01-01

    We present a qualitative, exploratory research librarian at the Instituto de Formación Técnica Superior (IFTS) No. 13 (Buenos Aires,Argentina), showing their characteristics and achievements. It describes the institutional landscape of IFTS No. 13, presentation of their curriculum, the seminar material Research in Library and its characteristics, the research institution that has this description of the Observatorio para la Investigación Bibliotecológica. At the conclusion of reversing a ques...

  8. Greisen deposits associated to carboniferous post-orogenic granites with mineralization potential, Sierra de Fiambala, Catamarca, Argentina

    International Nuclear Information System (INIS)

    Fogliata, A. S.; Rubinstein, N. R.; Avila, J. C.; Baez, M.

    2008-01-01

    The Fiambala range is located in the central south part of the province of Catamarca, Western Sierras Pampeanas, Argentina. It is largely conformed by Precambrian metamorphic rocks, a Cambrian granitic intrusive, Ordovician basic and ultra basic rocks and epi zonal Carboniferous granites (Los Ratones, El Salto and Ayacucho Granites). The Carboniferous granites are sub alkaline, weakly peraluminous, high silica (except for the porphyritic facies of Los Ratones granite) and moderately enriched in K. Contents of trace elements and REE indicate that El S alto and Ayacucho granites and the granular facies of Los Ratones granite have characteristics of evolved and differentiated granite associated with hydrothermal systems. The variations of trace elements, particularly Sn, W, U, Rb, Ba, Zr and Sr suggest that they correspond to granites with mineralization potential. Genetically linked to these granites there are Sn, W, U and minor base metals greisen deposits. The hydrothermal process that yield to these deposits involved two main alteration stages, beginning with alkali metasomatism follow by greissenization. According to the isotopic ages the hydrothermal processes postdate about 1 Ma the magmatic activity. The analyses of the granites and the associated greisen deposits confirm that the post orogenic carboniferous magmatism is the major metallogenetic control of the ore deposits from the studied area. This metallogenetic control could be a useful tool in prospecting similar deposits in the rest of the Western Sierras Pampeanas. (Author)

  9. Characterization and Identification of the Basidiomycetous Fungus Associated with 'hoya de malvón' Grapevine Disease in Argentina

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    S. Lupo

    2006-04-01

    Full Text Available Inocutis jamaicensis (Murrill Gottlieb, J.E. Wright & Moncalvo was identified as the basidiomycetous species associated with ‘hoja de malvón’ grapevine disease in Argentina. Macro and micro-morphological characteristics of fruit bodies corresponded to those described for the white-rotting fungus associated with native plant species and Eucalyptus globulus Labill. planted in Uruguay. Monokariotic isolates were obtained from basidiospores produced by fruit bodies of I. jamaicensis collected from Vitis vinifera L. and E. globulus. Dikaryons and fruit bodies produced by pairing monokaryotic mycelium suggest that all these isolates belong to the same species. The analysis of RFLP of the dikaryon produced by pairing monokaryons derived from V. vinifera and E. globulus revealed fragments that corresponded to each monokaryon, confirming that isolates from Vitis mated with those from Eucalyptus. In order to compare grapevine and Uruguayan isolates, RFLPs from ITS region generated by restriction digestion with Alu I, Hae III, Hha I, Msp I and Taq I were performed. Differences found in some restriction pattern could reflect a certain degree of variability between dikariotic isolates, probably related with a particular lifestyle, host specificity or geographic origin.

  10. Actitudes lingüísticas en la Argentina. El español en Buenos Aires: Una aproximación a las representaciones de sus hablantes

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    Gabriela Llull

    2014-11-01

    Full Text Available Resumen Este artículo analiza las actitudes lingüísticas de hablantes nativos de español de la Ciudad Autónoma de Buenos Aires, hacia al español de la Argentina y el español de los otros países hispanohablantes. El artículo es parte de los resultados del Proyecto LIAS (Linguistic Identity and Attitudes in Spanish-speaking Latin America, financiado por El Consejo Noruego de Investigación (RCN. La recolección de los datos se realizó en la capital del país, entrevistando a una muestra de 400 informantes previamente estratificada con las variables de edad, sexo y nivel socioeconómico. El procesamiento estadístico de los datos de campo recolectados arrojó resultados de interés en torno a la mayoría de los tópicos analizados y especialmente en lo referente a aspectos tales como la valoración positiva de la propia variedad lingüística; la resistencia a identificar a España como la única fuente de la norma lingüística de la lengua española; el rechazo a la unificación de la lengua y, por consiguiente, la defensa de la diversidad lingüística como portadora de riqueza cultural. Abstract This article analyzes the linguistic attitudes of native Spanish speakers from Buenos Aires City, towards Spanish spoken in Argentina and in the other Spanish-speaking countries. It is a result of the LIAS-Project (Linguistic Identity and Attitudes in Spanish-speaking Latin America, funded by The Research Council of Norway (RCN. The data were gathered in the capital of the country, interviewing a stratified sample of 400 respondents, based on the variables of age, sex and socioeconomic status. The analysis of the data rendered interesting results on most of the analyzed topics; especially important was the positive appraisal of Argentineans' own linguistic variety; the strong resistance against identifying Spain as the only source of the linguistic norm for the Spanish language; and the rejection of language unification, defending in this way

  11. Genome Sequence of Acidovorax avenae Strain T10_61 Associated with Sugarcane Red Stripe in Argentina

    Science.gov (United States)

    Fontana, Cecilia A.; Bassi, Daniela; Puglisi, Edoardo; Salazar, Sergio M.; Vignolo, Graciela M.; Coccocelli, Pier S.

    2016-01-01

    Red stripe of sugarcane in Argentina is a bacterial disease caused by Acidovorax avenae. The genome sequence from the first isolate of this bacterium in Argentina is presented here. The draft genome of the A. avenae T10_61 strain contains 5,646,552 bp and has a G+C content of 68.6 mol%. PMID:26847889

  12. 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

  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. [Metabolic syndrome and risk factors associated with life style among adolescents in a city in Argentina, 2005].

    Science.gov (United States)

    Pedrozo, Williams; Rascón, María Castillo; Bonneau, Graciela; de Pianesi, María Ibáñez; Olivera, Carlos Castro; de Aragón, Sonia Jiménez; Ceballos, Blanca; Gauvry, Gabriela

    2008-09-01

    To determine the prevalence of metabolic syndrome among adolescents in a city in Argentina and to establish its association with certain risk factors linked to life style. Cross-sectional study of a representative sample of 532 middle and high school students from 11-20 years of age (mean: 15.3 years; females: 60%) in the city of Posadas, province of Misiones, Argentina, from July-October 2005. Surveys were conducted of individuals' dietary habits, anthropometric measurements, sedentary levels, blood pressure readings, and laboratory results. Metabolic syndrome was diagnosed if three or more of the following conditions were present: fasting glucose > or = 110 mg/dL; triglycerides > or = 110 mg/dL; HDL cholesterol 90th percentile; and waist circumference > 90th percentile. The prevalence of metabolic syndrome was 4.5%; significantly higher among males than among females (7.5% vs. 2.5%; P = 0.006) and among the 15-20 year old age group than among the 11-14 year old group (6.3% vs. 2.5%; P = 0.037). Of the adolescents, 44.7% had one or more components of metabolic syndrome. The risk of metabolic syndrome among obese adolescents was elevated (odds ratio = 119.73; 95% confidence interval: 27.6-519.41). Dietary habits and frequency of food consumption were similar among students with and without metabolic syndrome; however, the first group consumed fattening foods more frequently. Of all the adolescents in the sample, 84.8% were sedentary (100% of those with metabolic syndrome). In the city of Posadas, some 1 400 students suffer from metabolic syndrome and about 13 000 have at least one metabolic syndrome component. Joint efforts by the state government and the community are needed to change dietary habits and increase physical activity, mainly among boys, those 15-20 years of age, and the obese, to reverse the situation and reduce the morbidity/mortality that results from metabolic syndrome.

  16. 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.)

  17. Polymorphism of the FABP2 gene: a population frequency analysis and an association study with cardiovascular risk markers in Argentina

    Directory of Open Access Journals (Sweden)

    Mayorga Luis S

    2007-06-01

    Full Text Available Abstract Background The FABP2 gene encodes for the intestinal FABP (IFABP protein, which is expressed only in intestinal enterocytes. A polymorphism at codon 54 in exon 2 of the FABP2 gene exchanges an Alanine (Ala, in the small helical region of the protein, for Threonine (Thr. Given the potential physiological role of the Ala54Thr FABP2 polymorphism, we assess in this study the local population frequency and analyze possible associations with five selected markers, i.e. glycemia, total cholesterol, body mass index (BMI, hypertension, and high Cardiovascular Risk Index (CVR index. Methods We studied 86 men and 116 women. DNA was extracted from a blood drop for genotype analysis. Allele frequencies were calculated by direct counting. Hardy Weinberg Equilibrium was evaluated using a Chi-square goodness of fit test. For the polymorphism association analysis, five markers were selected, i.e. blood pressure, Framingham Risk Index, total cholesterol, BMI, and glycemia. For each marker, the Odds Ratio (OR was calculated by an online statistic tool. Results Our results reveal a similar population polymorphism frequency as in previous European studies, with q = 0.277 (95% confidence limits 0.234–0.323. No significant association was found with any of the tested markers in the context of our Argentine nutritional and cultural habits. We did, however, observe a tendency for increased Cholesterol and high BMI in Thr54 carriers. Conclusion This is the first study to look at the population frequency of the Thr54 allele in Argentina. The obtained result does not differ from previously reported frequencies in European populations. Moreover, we found no association between the Thr54 allele and any of the five selected markers. The observed tendency to increased total cholesterol and elevated BMI in Thr54 carriers, even though not significant for p

  18. Landscape genetics in the subterranean rodent Ctenomys "chasiquensis" associated with highly disturbed habitats from the southeastern Pampas region, Argentina.

    Science.gov (United States)

    Mora, Matías Sebastián; Mapelli, Fernando J; López, Aldana; Gómez Fernández, María Jimena; Mirol, Patricia M; Kittlein, Marcelo J

    2017-12-01

    Studies of genetic differentiation in fragmented environments help us to identify those landscape features that most affect gene flow and dispersal patterns. Particularly, the assessment of the relative significance of intrinsic biological and environmental factors affecting the genetic structure of populations becomes crucial. In this work, we assess the current dispersal patterns and population structure of Ctenomys "chasiquensis", a vulnerable and endemic subterranean rodent distributed on a small area in Central Argentina, using 9 polymorphic microsatellite loci. We use landscape genetics approaches to assess the relationship between genetic connectivity among populations and environmental attributes. Our analyses show that populations of C. "chasiquensis" are moderately to highly structured at a regional level. This pattern is most likely the outcome of substantial gene flow on the more homogeneous sand dune habitat of the Northwest of its distributional range, in conjunction with an important degree of isolation of eastern and southwestern populations, where the optimal habitat is surrounded by a highly fragmented landscape. Landscape genetics analysis suggests that habitat quality and longitude were the environmental factors most strongly associated with genetic differentiation/uniqueness of populations. In conclusion, our results indicate an important genetic structure in this species, even at a small spatial scale, suggesting that contemporary habitat fragmentation increases population differentiation.

  19. 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.

  20. Suitability of containers from different sources as breeding sites of Aedes aegypti (L. in a cemetery of Buenos Aires City, Argentina

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    Darío Vezzani

    2002-09-01

    Full Text Available Cemeteries are ideal urban areas to study the importance of different types of containers as breeding sites of Aedes aegypti (L.. In the present study, the suitability of plastic, glass, ceramic and metal containers was evaluated in four patches within a cemetery of Buenos Aires City, Argentina. Between October 1998 and May 2000, we found 215 breeding sites of Ae. aegypti out of 13,022 water-filled containers examined. In two patches containing microenvironments sheltered from the sun, the use of the different types of containers was proportional to the offer (correlation coefficient = 0.99, P < 0.05 in both cases. In the remaining patches, plastic and metal containers were the most and less frequent breeding sites, respectively (P < 0.001 in both cases. The number of immatures per breeding site (median = 4.5 did not show significant differences among the four types of containers examined (H3, 215 = 1.216, P = 0.749. Differences found in patches from a same cemetery suggest that different microenvironmental conditions affect the suitability of each type of container for Ae. aegypti breeding. Plastic containers appeared as key breeding sites that should be removed to reduce the Ae. aegypti population in the study area.

  1. Tierras elegibles para cultivos forestales según el protocolo de Kyoto en dos partidos de la provincia de Buenos Aires, Argentina

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    LUPI, A.M.1;

    2013-08-01

    Full Text Available This article reports the amount of land available that can be used only for forestry projects under the KyotoProtocol (KP, Daireaux and Guaminí districts, Buenos Aires Province, Argentina. The information is valuableto potential investors or public or private operators interested in promoting the development of forestry projectsin the Clean Development Mechanism (CDM PK. We used Landsat 1988, 1989, 2008 and CBERS-2B 2009,the database and images of national forest inventory, surveys of field tree plantations. We compared the coverageof land use on images of 1989 and 2008. Surfaces covered with forests were characterized as non-eligible areas. The remaining area was classified as eligible land. Eligible lands are divided into two subclasses: 1Eligible land without restriction by the presence of soils Udipsament típico y Hapludol éntico, where growth forest are promising and are areas that do not compete with agricultural use, and 2 Eligible land with forest use restrictions as a result of competition by other land uses or edaphic restrictions. The results indicate that Daireaux and Guaminí Districts have an elegible of 47,021 ha. The eligible areas with restrictions are 314.737ha in Daireaux and 424.456 ha in Guaminí. The non-eligible area is 8.573 ha.

  2. 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.

  3. Ayurveda in Argentina and other Latin American countries

    Science.gov (United States)

    Berra, Jorge Luis; Molho, Rosana

    2010-01-01

    Over the past 20 years the Fundacion Salud de Ayurved Prema Argentina has spread the knowledge of Ayurveda throughout Latin America. The Fundacion is based in Buenos Aires in the Argentine Republic, where it now runs courses in two of the country’s major medical schools - at the School of Medicine of the University of Buenos Aires, and the National University of Cordoba’s School of Medicine. Based on an MoU with Gujarat Ayurveda University, at Jamnagar, Gujarat, the Fundacion has been accredited as a Collaborating Center for teaching, assistance and research in the field of Ayurvedic Medicine in Argentina. This has led to successful missions to other countries in the region where the Fundacion and its associates have been able to start dialogues with governments, and in places hold sizeable courses. The knowledge of Ayurveda is now spreading throughout South and Central America and hardly a country remains untouched by it. PMID:21547054

  4. Comunidad de arañas (Arachnida, Araneae del cultivo de alfalfa (Medicago sativa en Buenos Aires, Argentina

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    Andrea Armendano

    2010-06-01

    Full Text Available En las últimas décadas se ha dado un interés creciente en el uso de enemigos naturales para controlar plagas de insectos, como arañas. Se estudió una comunidad de arañas en Argentina mediante un muestreo cada dos semanas durante el periodo 2004-2006 en lotes de una hectárea. En el estrato del suelo las arañas fueron colectadas con redes de arrastre y trampas de caída. Se recolecto un total de 6 229 ejemplares (15 familias y 50 especies. Siete familias se encuentran en el estrato herbáceo, las más abundantes fueron: Thomisidae (n=2 012, 32.30%, Araneidae (n=1 516, 24.33% y Oxyopidae (n=604, 9.70%. El suelo habían 14 familias, principalmente: Lycosidae (n=629, 10.10% y Linyphiidae (n=427, 6.85%. Predominaron las arañas cazadoras: por emboscadas (32.99%, al acecho (11.77%, corredoras de suelo (10.84% y tejedoras orbiculares (27.56%. Los índices de diversidad fueron: H´=2.97, Dsp=0.11 y J=0.79, evidenciando una comunidad de arañas moderadamente diversa, con predominio de Misumenops pallidus, Oxyopes salticus, Lycosa poliostoma and L. erythrognatha. Las arañas estuvieron presentes durante el desarrollo fenológico del cultivo con picos de abundancia en primavera y verano.

  5. Climatology of hail in Argentina

    Science.gov (United States)

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

    2012-10-01

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

  6. Spatial distribution of ground-level urban background O3 concentrations in the Metropolitan Area of Buenos Aires, Argentina

    International Nuclear Information System (INIS)

    Pineda Rojas, Andrea L.; Venegas, Laura E.

    2013-01-01

    In this work, a recently developed urban-scale atmospheric dispersion model (DAUMOD-GRS) is applied to evaluate the ground-level ozone (O 3 ) concentrations resulting from anthropogenic area sources of NO x and VOC in the Metropolitan Area of Buenos Aires (MABA). The statistical comparison of model results with observations (including new available data from seventeen sites) shows a good model performance. Estimated summer highest diurnal O 3 1-h concentrations in the MABA vary between 15 ppb in the most urbanised area and 53 ppb in the suburbs. All values are below the air quality standard. Several runs are performed to evaluate the impact of possible future emission reductions on O 3 concentrations. Under all hypothetical scenarios, the maximum diurnal O 3 1-h concentration obtained for the area is slightly reduced (up to 4%). However, maximum diurnal O 3 concentrations could increase at some less urbanised areas of MABA depending on the relative reductions of the emissions of NO x and VOC. -- Highlights: ► A recently developed air quality model reproduces well observed O 3 levels in MABA. ► Modelled summer maximum diurnal O 3 concentrations vary in the area between 15 and 53 ppb. ► All hourly values are below the air quality standard (120 ppb). ► Possible future emission reductions would have small impact on the highest level. -- The distribution of summer maximum diurnal ground-level O 3 concentrations in the Metropolitan Area of Buenos Aires is evaluated applying a recently developed simple urban air quality model

  7. Ambient air pollution associated to domestic wood burning heating systems

    International Nuclear Information System (INIS)

    Friboulet, I.; Durif, M.; Malherbe, L.

    2009-01-01

    Main publications are considering effects of wood burning appliances on indoor air quality, which is a major issue in some countries. But impacts on ambient air, close environment and human exposure are rather poorly characterised so far. Besides, woods burning for domestic purpose may develop in the next years while promoting bio fuels. The aim of the ongoing study is to assess in which conditions associated air pollution and population exposure could be significant, this poster shows preliminary results of the impact of a village of 98 houses equipped with a wood burning heating system. (N.C.)

  8. Air pollution exposure is associated with restrictive ventilatory patterns

    NARCIS (Netherlands)

    de Jong, Kim; Vonk, Judith M.; Zijlema, Wilma L.; Stolk, Ronald P.; van der Plaat, Diana A.; Hoek, Gerard; Brunekreef, Bert; Postma, Dirkje S.; Boezen, H. Marike

    2016-01-01

    Exposure to ambient air pollution is associated with a substantial burden of morbidity and mortality worldwide [1]. In a recent paper, Adam et al. [2] showed significantly impaired levels of forced expiratory volume in 1 s (FEV1) and forced vital capacity (FVC) associated with exposure to the

  9. 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

    Full Text Available En este trabajo se propone un índice climático para estimar el riesgo de ocurrencia de erosión eólica basado en las leyes físicas que cuantifican el efecto de la agresión del medio (turbulencia atmosférica sobre la resistencia del sistema (textura del suelo. Este indicador es obtenido en función de observaciones meteorológicas estándar a partir de un modelo que incluye la alteración del perfil vertical del viento ocasionada por la presencia de partículas de suelo en el aire y es expresado en términos de la probabilidad de que la potencia del viento supere las condiciones umbrales para el comienzo del proceso. Si bien el índice fue obtenido para suelo seco y desnudo, la metodología permite avanzar hacia un modelo de evaluación de riesgo más general, si se determinan previamente los valores de velocidad de fricción umbral que corresponden a distintas condiciones que afectan la resistencia del suelo tales como la humedad del suelo, el contenido de materia orgánica, cobertura y uso de la tierra. Este modelo ha sido utilizado para evaluar la distribución espacial del riesgo de erosión eólica en la Provincia de Buenos Aires, Argentina.This paper proposes a climatic index to estimate the wind erosion risk based upon physical laws that quantify the effect of environment's aggression (atmospheric turbulence on system resistance (soil texture. This index is obtained as a function of standard meteorological observations including the alteration of the wind profile produced by the presence of soil particles in the air and it is expressed in terms of the probability for the wind power to exceed the threshold conditions. Although this index was obtained for dry and bare soil, it may mean an advance towards a more general model for risk evaluation if other factors intervening in soil resistance, such as soil humidity, organic material content, land cover and use are included. This model has been used to evaluate the spatial distribution

  10. Socio-environmental variables associated with malnutrition and intestinal parasitoses in the child population of Misiones, Argentina.

    Science.gov (United States)

    Zonta, María L; Oyhenart, Evelia E; Navone, Graciela T

    2014-01-01

    The aim was to analyze the socio-environmental variables associated with malnutrition and intestinal parasitoses in children from Aristóbulo del Valle, Province of Misiones (Argentina). A cross-sectional study was performed in 2,291 schoolchildren (age, 4-14 years). Body weight and height were measured and body mass index was calculated. NHANES III reference was used to estimate the nutritional status-underweight, stunting, wasting, overweight, and obesity. The parasitological analysis was performed by fecal and anal brush samples. The socio-environmental variables were surveyed using a semi-structured questionnaire. These variables were processed by categorical principal component analysis (cat-PCA). The two first axes defined four subgroups of schoolchildren: three of these were associated with urban characteristics (high, middle, and periurban), whereas the remaining subgroup was considered rural. Stunting and parasitic infections occurred mainly in the periurban group, that is the group of higher socio-environmental vulnerability. On the other hand, the highest prevalence of overweight and obesity and the lowest parasitism was observed in the high urban group. The similarity between rural and middle urban groups in stunting prevalence reveals that cities are not healthier than rural environments. On the contrary, the fact that the rural group presents the lowest prevalence of overweight reaffirms that poverty and malnutrition are progressively moving from rural to urban areas, and that rural children have still more diverse and healthy diets favored by the consumption of homemade products (i.e., orchards, animal husbandry, etc.), placing them at an earlier stage of the nutrition transition. © 2014 Wiley Periodicals, Inc.

  11. 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

  12. Hospital-acquired infections associated with poor air quality in air-conditioned environments

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    Daniela Pinheiro da Silva

    2013-10-01

    Full Text Available Backgound and Objectives: Individuals living in cities increasingly spend more time indoors in air-conditioned environments. Air conditioner contamination can be caused by the presence of aerosols from the external or internal environment, which may be associated with disease manifestations in patients present in this type of environment. Therefore, the aim of this review was to assess the air quality in air-conditioned hospital environments as a risk factor for hospital-acquired infections – HAI – as the air can be a potential source of infection, as well as assess the exposure of professionals and patients to different pollutants. Material and Methods: A literature review was performed in the LILACS, MEDLINE, SCIELO, SCIENCE DIRECT databases, CAPES thesis database and Ministry of Health – Brazil, including studies published between 1982 and 2008. The literature search was grouped according to the thematic focus, as follows: ventilation, maintenance and cleaning of systems that comprehend the environmental quality standard. Discussion and Conclusion: Outbreaks of hospital-acquired infections associated with Aspergillus, Acinetobacter, Legionella, and other genera such as Clostridium and Nocardia, which were found in air conditioners, were observed, thus indicating the need for air-conditioning quality control in these environments.

  13. Disinfectant-resistant bacteria in Buenos Aires city hospital wastewater Resistência bacteriana a desinfetantes em efluentes de um hospital em Buenos Aires, Argentina

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    L. Nuñez

    2007-12-01

    Full Text Available Large quantities of disinfectants are used in hospitals, externally on human skin or to eliminate microorganisms from inanimate objects. After use, residual quantities of these products reach the wastewater, exposing the bacteria that survive in hospital wastewaters to a wide range of biocides that could act as a selective pressure for the development of resistance. Increasing attention has been directed recently to the resistance of bacteria to disinfectants. The aim of this paper was to determine the disinfectant bacterial resistance pattern of the microflora released to the urban sewer system by hospital effluents. The characterization of the waste water microflora was performed by determination of the CFU of heterotrophic bacteria, fecal indicator bacteria, Pseudomonas sp. and Staphylococcus sp., in a Buenos Aires hospital effluent. The bacterial resistance to the disinfectants more frequently used in the hospital practice, glutaraldehyde, chlorhexidine and povidone-iodine, was then evaluated. Disinfectant resistant bacterial strains were isolated and typified. Between 10³ and 10(6 chlorexidine resistant bacteria/100 mL were isolated from the samples. Bacteria resistant to other disinfectants ranged between 10³ and 10(4 /100 mL. The bacterial population resistant to desinfectants to was mainly composed by Enterobacteriaceae, Staphylococcus spp, and Bacillus spp, which are highly associated to nosocomial infections. The results obtained show that the hospital effluents are of importance in the bacterial resistance selection process, particularly in the case of disinfectants.Os hospitais utilizam uma grande quantidade de desinfetantes para eliminar microorganismos tanto da pele humana como de superfícies inanimadas. Após sua utilização, esses produtos podem chegar ao esgoto em quantidades residuais. A pressão seletiva exercida pelos antimicrobianos nos efluentes hospitalares propicia a disseminação de linhagens resistentes. Além dos

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

    Directory of Open Access Journals (Sweden)

    Mónica M. Steciow

    2001-01-01

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

  15. Seismically-induced soft-sediment deformation structures associated with the Magallanes-Fagnano Fault System (Isla Grande de Tierra del Fuego, Argentina)

    Science.gov (United States)

    Onorato, M. Romina; Perucca, Laura; Coronato, Andrea; Rabassa, Jorge; López, Ramiro

    2016-10-01

    In this paper, evidence of paleoearthquake-induced soft-sediment deformation structures associated with the Magallanes-Fagnano Fault System in the Isla Grande de Tierra del Fuego, southern Argentina, has been identified. Well-preserved soft-sediment deformation structures were found in a Holocene sequence of the Udaeta pond. These structures were analyzed in terms of their geometrical characteristics, deformation mechanism, driving force system and possible trigger agent. They were also grouped in different morphological types: sand dykes, convolute lamination, load structures and faulted soft-sediment deformation features. Udaeta, a small pond in Argentina Tierra del Fuego, is considered a Quaternary pull-apart basin related to the Magallanes-Fagnano Fault System. The recognition of these seismically-induced features is an essential tool for paleoseismic studies. Since the three main urban centers in the Tierra del Fuego province of Argentina (Ushuaia, Río Grande and Tolhuin) have undergone an explosive growth in recent years, the results of this study will hopefully contribute to future analyses of the seismic risk of the region.

  16. Fasciola hepatica infection and association with gastrointestinal parasites in Creole goats from western Argentina Fasciola hepatica infecção e associação com parasitas gastrintestinais em caprinos crioulos do oeste da Argentina

    Directory of Open Access Journals (Sweden)

    Pablo Cuervo

    2013-08-01

    Full Text Available Goats, called “the cow of the poor”, are the livestock species with the most significant population growth worldwide in recent years. Gastrointestinal parasitism constitutes one of the main constraints to its outdoor and extensive breeding in temperate and tropical countries. Despite a Creole goat population of nearly 4 million heads, local reports on parasitological prevalence are scarce, and while Fasciola hepatica infection is spread all over Argentina, the goat is usually neglected as a reservoir and economic losses are not considered. To evaluate gastrointestinal parasitism prevalence and associations between parasite genera and species, with emphasis on fascioliasis, Creole goats from the plateau and Andean regions from western Argentina were investigated by coprological techniques, and associations were statistically assessed. Eighty-five percent (85% of the animals harbored one or more parasite types, while 46% showed mixed infections. Significant positive associations between F. hepatica + Strongyle eggs, Eimeria sp. + Nematodirus sp. and Nematodirus sp. + Trichuris ovis were detected. Further studies are required to define the causality of these associations and their relevance in epidemiology. F. hepatica is rarely considered as goat parasite in the country, but a 33% prevalence poses an interrogation on the role goats play on the transmission and dissemination of this zoonotic trematode.As cabras, nomeadas como “a vaca dos pobres”, são as espécies de gado com o crescimento populacional mais significativo nos últimos anos em todo o mundo. O parasitismo gastrintestinal constitui uma das principais limitações à sua criação extensiva em clima temperado e tropical. Na Argentina, apesar de uma população de caprinos crioulos de cerca de quatro milhões de cabeças, são escassos os relatórios locais de prevalências parasitológicas. Embora a infecção por Fasciola hepatica esteja espalhada em todo o país, as cabras s

  17. Informing effective smokefree policies in Argentina: air quality monitoring study in 15 cities (2007-2009 Políticas efectivas de ambientes libres de humo de tabaco en Argentina: estudio de monitoreo de calidad del aire en 15 ciudades (2007-2009

    Directory of Open Access Journals (Sweden)

    Verónica Schoj

    2010-01-01

    Full Text Available Objective. To evaluate indoor air pollution in hospitality venues in Argentina. Material and Methods. PM2.5 levels were measured in a convenience sample of venues in 15 cities with different legislative contexts following a protocol developed by Roswell Park Cancer Institute. Results. 554 samples were collected. Across all 5 smokefree cities the mean PM2.5 level was lower during daytime vs. evening hours, 24 vs. 98 PM2.5 respectively (p=.012. In the three cities evaluated before and after legislation, PM2.5 levels decreased dramatically (pObjetivo. Evaluar la polución ambiental del sector gastronómico en Argentina. Material y métodos. Se midieron los niveles de partículas respirables (PM2.5 en una muestra por conveniencia de establecimientos de 15 ciudades con diferente legislación, siguiendo un protocolo del Instituto de Cáncer Roswell Park. Resultados. Se recolectaron 554 muestras. En cinco ciudades libres de humo (CLH la media de PM2.5 durante el día fue baja y menor a la observada durante la noche, 24 vs. 98 PM2.5 respectivamente (p=.012. En las tres ciudades evaluadas antes y después de la legislación, las PM2.5 disminuyeron drásticamente (p<0.001 cada una. Las PM2.5 fueron cinco veces mayores en ciudades sin legislación comparadas con CLH (p<0.001. En ciudades con restricción parcial, no hubo diferencia significativa entre las PM2.5 en el sector fumador y no fumador (p=0.272. Los sectores no fumadores tuvieron niveles PM2.5 significativamente más altos comparados con los lugares 100% libres de humo de la misma ciudad (p= 0.017. Conclusiones. La mayoría de las ciudades participantes en este estudio tuvieron niveles PM2.5 significativamente más bajos tras la implementación de leyes pro ambientes 100% libres de humo de tabaco, por lo que representa una herramienta útil para promover legislación 100% libre de humo en Argentina.

  18. Air Pollution Is Associated With Ischemic Stroke via Cardiogenic Embolism.

    Science.gov (United States)

    Chung, Jong-Won; Bang, Oh Young; Ahn, Kangmo; Park, Sang-Soon; Park, Tai Hwan; Kim, Jae Guk; Ko, Youngchai; Lee, SooJoo; Lee, Kyung Bok; Lee, Jun; Kang, Kyusik; Park, Jong-Moo; Cho, Yong-Jin; Hong, Keun-Sik; Nah, Hyun-Wook; Kim, Dae-Hyun; Cha, Jae-Kwan; Ryu, Wi-Sun; Kim, Dong-Eog; Kim, Joon-Tae; Choi, Jay Chol; Oh, Mi-Sun; Yu, Kyung-Ho; Lee, Byung-Chul; Lee, Ji Sung; Lee, Juneyoung; Park, Hong-Kyun; Kim, Beom Joon; Han, Moon-Ku; Bae, Hee-Joon

    2017-01-01

    The aim of the study was to assessed the impact of short-term exposure to air pollution on ischemic stroke subtype, while focusing on stroke caused via cardioembolism. From a nationwide, multicenter, prospective, stroke registry database, 13 535 patients with acute ischemic stroke hospitalized to 12 participating centers were enrolled in this study. Data on the hourly concentrations of particulate matter <10 μm, nitrogen dioxide (NO 2 ), sulfur dioxide (SO 2 ), ozone (O 3 ), and carbon monoxide (CO) were collected from 181 nationwide air pollution surveillance stations. The average values of these air pollutants over the 7 days before stroke onset from nearest air quality monitoring station in each patient were used to determine association with stroke subtype. The primary outcome was stroke subtype, including large artery atherosclerosis, small-vessel occlusion, cardioembolism, and stroke of other or undetermined cause. Particulate matter <10 μm and SO 2 concentrations were independently associated with an increased risk of cardioembolic stroke, as compared with large artery atherosclerosis and noncardioembolic stroke. In stratified analyses, the proportion of cases of cardioembolic stroke was positively correlated with the particulate matter <10 μm, NO 2 , and SO 2 quintiles. Moreover, seasonal and geographic factors were related to an increased proportion of cardioembolic stroke, which may be attributed to the high levels of air pollution. Our findings suggest that the short-term exposure to air pollutants is associated with cardioembolic stroke, and greater care should be taken for those susceptible to cerebral embolism during peak pollution periods. Public and environmental health policies to reduce air pollution could help slow down global increasing trends of cardioembolic stroke. © 2016 American Heart Association, Inc.

  19. Comunidades de insectos acuáticos de charcos temporarios y lagunas en la ciudad de Buenos Aires (Argentina Aquatic insect communities of temporary pools and permanent ponds in Buenos Aires City (Argentina

    Directory of Open Access Journals (Sweden)

    María S. Fontanarrosa

    2004-12-01

    Full Text Available Se realizó un estudio comparativo de la comunidad de insectos acuáticos presente en charcos temporarios de parques y plazas de la ciudad de Buenos Aires, y en lagunas permanentes de la Reserva Ecológica Costanera Sur, situada en la ribera del Río de la Plata. Se revisaron 3436 charcos y se visitaron, en 149 oportunidades, seis lagunas de la reserva. Para el conjunto de ambientes, se registraron 85 taxones pertenecientes a cinco órdenes de insectos. Los coleópteros fueron los más diversos (36 taxones, seguidos por los dípteros (27, heterópteros (17, odonatos (4 y efemerópteros (1. Se observaron altos valores de riqueza en los charcos temporarios (58 taxones y las lagunas sin vegetación flotante (64 taxones. La diversidad estimada de los charcos temporarios fue significativamente (pWe studied the community of aquatic insects inhabiting both temporary pools and permanent ponds occuring in Buenos Aires City. A total of 3436 rain pools were examined, and six permanent ponds at the "Reserva Ecológica Costanera Sur" in the Río de la Plata riverside were visited 149 times. A total of 85 taxa were recorded from both habitats, included in five orders of Insecta. The order Coleoptera showed the highest diversity values (36 taxa, followed by Diptera (27, Heteroptera (17, Odonata (4, and Ephemeroptera (1. High values of richness were observed in temporary pools (58 taxa and permanent ponds without floating vegetation (64 taxa. The diversity index for temporary ponds was significantly (p<0,05 lower than in permanent habitats.

  20. Household prevalence of seropositivity for Trypanosoma cruzi in three rural villages in northwest Argentina: environmental, demographic, and entomologic associations.

    Science.gov (United States)

    Gürtler, R E; Chuit, R; Cécere, M C; Castañera, M B; Cohen, J E; Segura, E L

    1998-11-01

    Environmental, demographic, and entomologic variables were analyzed by logistic multiple regression analysis for their association with the likelihood of being seropositive for Trypanosoma cruzi in three highly infested rural villages of northwest Argentina. The prevalence of seropositivity for T. cruzi, as determined by the composite results of three serologic tests, was 34% among 338 persons in 1992. The strongest positive predictors of the adjusted odds of being infected were the household number of dogs, the density of T. cruzi-infected Triatoma infestans in bedroom areas, and each person's age. Dwellers from houses with roofs made completely or partly with a grass called simbol, or which used insecticides rudimentarily and nonsystematically, had a significantly lower odds of being seropositive for T. cruzi than residents from other types of dwellings. The adjusted odds of infection also increased with the number of T. cruzi-infected dogs or cats and the presence of chickens in bedroom areas. No significant effects on the adjusted odds of infection of a community-wide deltamethrin spraying carried out in one of the villages seven years before were detected. Socioeconomic indicators, such as domiciliary area, and numbers of corrals and livestock, were inversely related to being infected. Our study identified several manageable variables suitable for control actions, most of them not examined before in univariate or multivariate analyses. Environmental management based on low-cost housing with appropriate local materials and removal of domestic animals from domiciliary areas have a crucial role to play in the control of Chagas' disease in rural areas.

  1. Mineralogical association in the zone of argillic advanced alteration in a kaolin deposit of Patagonia Argentina

    International Nuclear Information System (INIS)

    Rainoldi, A; Oviedo, P.; Maiza, P.; Marfil, S.

    2010-01-01

    This work is about the mineralogical and petrological relations of the para genetic association of advanced argillic zone in the kaolin deposit in Patagonia.This study allowed to establish the sequence of events that took place in the deposit as well as the conditions under which they were generated

  2. Dinámica y Evolución de las Barreras Medanosas, Provincia de Buenos Aires, Argentina

    OpenAIRE

    Frederico I. Isla; Luis C. Cortizo; Horacio A. Turno Orellano

    2001-01-01

    Las barreras medanosas Oriental y Austral de Buenos Aires se originaron como consecuencia de la fluctuación holocena del nivel del mar que dejó abundante sedimento litoral que migró hacia el interior. De acuerdo a dataciones radiocarbónicas de materiales obtenidos por debajo de los niveles medanosos se reconocen 3 ciclos de generación de médanos costeros. El primero se originó con posterioridad a la colmatación de ambientes estuarinos (...

  3. Papers Selected for Presentation at the International Symposium on Remote Sensing of Environment (16th) Held at Buenos Aires, Argentina on 2-9 June 1982. Volume 2.

    Science.gov (United States)

    1982-06-01

    ARGENTINA Oscar Dominguez and Stella Carballo .............. 355 STUDIES ON SOME URBAN PROBLEMS USING AIRBORNE REMOTE SENSORS IN SANTIAGO, CHILE ...SAN JUAN ARGENTINA) (1) Silvia Lendaro de Gianni (2,3) Enrique Uliarte (I) Centro Regional de Agua Subterrgnea (2) Universidad Nacional de San Juan act...Hidrogeol6gico para refuerzo do la provisi6n de agua " a Puerto Deseado. In4dito. - Pezzuchi, Hugo Daniel (1978) "studio Geol6gico de la zona de Lstancia Dos

  4. Ezequiel Adamovsky. Historia de las clases populares en Argentina (1880-2003) : Buenos Aires, Sudamericana, 2012. 487 páginas

    OpenAIRE

    Lamaisón, María Josefina

    2012-01-01

    El joven historiador argentino Ezequiel Adamovsky, quien en 2009 ha publicado un voluminoso estudio sobre la clase media, titulado La historia de la clase media, se ocupa ahora de la historia de las clases populares argentinas en un libro que es una suerte de continuación de la Historia de las clases populares en Argentina desde 1516 a 1880, escrito por Gabriel Di Meglio y publicado también en 2012.

  5. Diserción en estudiantes de nuevo ingreso a carreras de diseño. El caso de la unversidad de Buenos aires, Argentina

    Directory of Open Access Journals (Sweden)

    Maris Vásquez, Stella

    2015-01-01

    Full Text Available El artículo presenta los resultados de una investigación acerca de los factores que inciden en la deserción y retención en la educación superior. En una muestra de 2273 alumnos del primer año de las carreras de Arquitectura, Diseño y Urbanismo de la Universidad de Buenos Aires, Argentina, que cursaron la materia de Dibujo, se aplicó un instrumento ad-hoc para evaluar la competencia espacial, el cuestionario MSLQ para evaluar los componentes del estilo de aprendizaje y se recogieron los datos demográficos y las calificaciones obtenidas por los alumnos. Se verificó que los factores de más peso en la explicación de la varianza para la deserción/retención fueron el nivel de competencia espacial en el momento de iniciar el curso, el rendimiento del primer semestre y las variables relacionadas con el estilo de aprendizaje. Además, se verificaron relaciones con factores demográficos: sexo, momento de inscripción, lugar de proveniencia y tipo de escuela media, gestión y orientación. De estos resultados surgen algunas reflexiones en el plano pedagógico, referidas a la necesidad de contribuir a que los alumnos desarrollen estilos de aprendizaje adaptativos, que les permitan asumir positivamente las exigencias que se derivan del nuevo ámbito de estudio, en el que es preciso crecer en la autoregulación

  6. DESERCIÓN EN ESTUDIANTES DE NUEVO INGRESO A CARRERAS DE DISEÑO. EL CASO DE LA UNIVERSIDAD DE BUENOS AIRES, ARGENTINA

    Directory of Open Access Journals (Sweden)

    Marianela Noriega Biggio

    2015-01-01

    Full Text Available El artículo presenta los resultados de una investigación acerca de los factores que inciden en la deserción y retención en la educación superior. En una muestra de 2273 alumnos del primer año de las carreras de Arquitectura, Diseño y Urbanismo de la Universidad de Buenos Aires, Argentina, que cursaron la materia de Dibujo, se aplicó un instrumento ad-hoc para evaluar la competencia espacial, el cuestionario MSLQ para evaluar los componentes del estilo de aprendizaje y se recogieron los datos demográficos y las calificaciones obtenidas por los alumnos. Se verificó que los factores de más peso en la explicación de la varianza para la deserción/retención fueron el nivel de competencia espacial en el momento de iniciar el curso, el rendimiento del primer semestre y las variables relacionadas con el estilo de aprendizaje. Además, se verificaron relaciones con factores demográficos: sexo, momento de inscripción, lugar de proveniencia y tipo de escuela media, gestión y orientación. De estos resultados surgen algunas reflexiones en el plano pedagógico, referidas a la necesidad de contribuir a que los alumnos desarrollen estilos de aprendizaje adaptativos, que les permitan asumir positivamente las exigencias que se derivan del nuevo ámbito de estudio, en el que es preciso crecer en la auto-regulación.

  7. Homicidios diarios. Análisis del discurso periodístico sobre homicidios por armas de fuego. Buenos Aires (Argentina 2001-2002

    Directory of Open Access Journals (Sweden)

    Leonardo Federico

    2010-01-01

    Full Text Available Durante los años 2001 y 2002, la Argentina atravesó una grave crisis política y social, alcanzando niveles de pobreza y exclusión inauditos. En esos años, los diferentes tipos de violencia urbana mostraron un marcado incremento, en especial los homicidios cometidos mediante el uso de armas de fuego, constituyéndose en una problemática social con importantes repercusiones para la salud pública. El presente artículo es producto de una investigación cualitativa que indagó, mediante un análisis crítico del discurso, las diferentes modalidades con que los diarios La Nación y Clarín dieron cuenta de los hechos acaecidos -durante dicho período- en la Ciudad Autónoma de Buenos Aires. Los datos se obtuvieron de la recopilación de material de hemeroteca, y fueron analizados a partir de una técnica propia referenciada en la Escuela Francesa de Análisis del Discurso. En cuanto a los resultados del estudio, se subraya: el posicionamiento más popular adoptado por el diario Clarín (lógica enunciativa de la verosimilitud, en contraposicióncon la búsqueda de objetividad de La Nación (lógica de la verificación, asumiendo ambos un carácter complementario en la producción y reproducción social de sentido, al dar cuenta de las muertes por homicidios ocasionadas mediante el uso de armas de fuego.

  8. (Re conocer, diagnosticar y cuidar dolores que “no se ven”: narrativas encontradas sobre la migraña en Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Romina Del Monaco

    2015-06-01

    Full Text Available En este artículo se investiga la forma en que se construye el diagnóstico biomédico de la migraña, los relatos de aquellos que padecen estos dolores de cabeza y de sus vínculos cercanos. A diferencia de otros padecimientos crónicos, la migraña es un dolor con un doble estatus. A pesar de que los saberes expertos legitiman y dan forma al diagnóstico (aunque se carece de una etiología clara y precisa, se observan explicaciones múltiples y fragmentarias acerca de los motivos que producen el malestar combinando aspectos biológicos con dimensiones sociales tales como los modos de vida de quienes padecen. Asimismo, las formas de cuidar y convivir con la dolencia están atravesadas por una serie de sentidos atribuidos socialmente al dolor que se asocian con las excusas y exageraciones. La perspectiva teórica-metodológica se inscribe en el dominio de la antropología de la salud, siguiendo los lineamientos de la investigación cualitativa y, específicamente, el análisis de las narrativas. El trabajo de campo consistió, en primer lugar, en la realización de entrevistas en profundidad y observación participante en un hospital público del Área Metropolitana de Buenos Aires, Argentina. En segundo lugar, a través de la técnica de bola de nieve, se realizaron entrevistas a otras personas que padecían migraña y vínculos próximos (parejas, familiares, conocidos por fuera de la institución.

  9. Proficiency in radiation protection, nuclear medicine and biomedicine in the Faculty of Biochemistry and Pharmaceutics, Universidad de Buenos Aires, Argentina; Capacitacion en proteccion radiologica en medicina y biomedicina en la Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Bergoc, Rosa M.; Caro, Ricardo A.; Rivera, Elena S. [Universidad Buenos Aires (Argentina). Faculdade de Farmacia y Bioquimica. Lab. de Radioisotopos; Menossi, Carlos A. [Autoridad Regulatoria Nuclear, Buenos Aires (Argentina)

    2001-07-01

    The School of Pharmacy and Biochemistry (Buenos Aires University) offers four annual courses on Methodology of Radioisotopes (which focus on different aspect of the Radiological Protection according to whom they are aimed: 1) Course for students in the Biochemistry Cycle; 2) Course for post-Graduate in Medicine, Biochemistry, Biology, Chemists; 3) Course to up-date the knowledge; 4) Course for Technicians in Nuclear Medicine. From 1960, 5000 biochemistry students have approved Methodology of Radioisotopes. The syllabus includes aspect related to the students' future professional activities. Since 1962, 1513 (?) graduates have approved it. Training (222 h) include: dosimetric magnitudes, units, internal and external dosimetry; working conditions, contamination barriers, radioprotection philosophy and principles; limits; radioactive wastes; legal aspects, national and international legislation. Uses of commonest isotopes in Nuclear Medicine and Biomedicine are under deep analysis. Since 1992 the graduates who wish to up-date their knowledge can follow this course organized in modules to suit their needs. Since 1997 this course emphasizes the operational aspects such as: columns elution, injection of radioactive drugs to patients, decontamination of areas. The increasing in the application of radioisotopes makes necessary to encourage their use in harmony with the environmental. (author)

  10. Presentación del estudio "Links" de hombres que tienes sexo con hombres en Buenos Aires, Argentina.

    Science.gov (United States)

    Carballo-Diéguez, Alex; Avila, María M; Balán, Iván C; Marone, Rubén; Pando, María A; Barreda, Victoria

    2011-03-01

    Estudios previos en Buenos Aires reportaron altas prevalencias de HIV entre HSH, con valores que oscilan entre 9 y 14% durante casi 10 años de continuo testeo. El objetivo principal de este estudio fue la evaluación de factores relacionados al comportamiento de alto riesgo para transmisión del HIV entre HSH entre los que se incluyen el conocimiento y factores emocionales, socioculturales y ambientales. Por otro lado se realizó la estimación de prevalencia e incidencia de HIV utilizando RDS (Respondent Driven Sampling), así como la presencia de otras infecciones de transmisión sexual. Por último se evaluaron los hábitos de testeo para HIV indagando que factores facilitan o impiden su realización. El estudio constó de dos fases, en primer lugar una fase cualitativa y posteriormente una fase cuantitativa con una duración total de 4 años y medio. Durante la fase cualitativa se realizaron 44 entrevistas individuales en profundidad, 8 grupos focales y 10 observaciones etnográficas (hoteles, baños públicos ("teteras"), cines pornográficos, fiestas privadas, dark rooms y discotecas). Durante la fase cuantitativa del estudio se realizó el reclutamiento de 500 participantes que provinieron de la Ciudad Autónoma de Buenos Aires, así como del Gran Buenos Aires. El reclutamiento se comenzó con 16 participantes llamados semillas. Se realizó el diagnóstico de infección por HIV, hepatitis B y C (HBV y HCV), Treponema pallidum, Virus Papiloma Humano (HPV) y Chlamidias. La colaboración establecida entre los grupos de trabajo enfocados en áreas diversas posibilitó el abordaje conjunto de nuevas estrategias de investigación antes no exploradas en nuestro país. Los resultados más relevantes de esta investigación serán progresivamente publicados en sucesivos números de Actualizaciones en SIDA.

  11. Presentación del estudio “Links” de hombres que tienes sexo con hombres en Buenos Aires, Argentina

    Science.gov (United States)

    Carballo-Diéguez, Alex; Ávila, María M; Balán, Iván C.; Marone, Rubén; Pando, María A.; Barreda, Victoria

    2011-01-01

    Resumen Estudios previos en Buenos Aires reportaron altas prevalencias de HIV entre HSH, con valores que oscilan entre 9 y 14% durante casi 10 años de continuo testeo. El objetivo principal de este estudio fue la evaluación de factores relacionados al comportamiento de alto riesgo para transmisión del HIV entre HSH entre los que se incluyen el conocimiento y factores emocionales, socioculturales y ambientales. Por otro lado se realizó la estimación de prevalencia e incidencia de HIV utilizando RDS (Respondent Driven Sampling), así como la presencia de otras infecciones de transmisión sexual. Por último se evaluaron los hábitos de testeo para HIV indagando que factores facilitan o impiden su realización. El estudio constó de dos fases, en primer lugar una fase cualitativa y posteriormente una fase cuantitativa con una duración total de 4 años y medio. Durante la fase cualitativa se realizaron 44 entrevistas individuales en profundidad, 8 grupos focales y 10 observaciones etnográficas (hoteles, baños públicos (“teteras”), cines pornográficos, fiestas privadas, dark rooms y discotecas). Durante la fase cuantitativa del estudio se realizó el reclutamiento de 500 participantes que provinieron de la Ciudad Autónoma de Buenos Aires, así como del Gran Buenos Aires. El reclutamiento se comenzó con 16 participantes llamados semillas. Se realizó el diagnóstico de infección por HIV, hepatitis B y C (HBV y HCV), Treponema pallidum, Virus Papiloma Humano (HPV) y Chlamidias. La colaboración establecida entre los grupos de trabajo enfocados en áreas diversas posibilitó el abordaje conjunto de nuevas estrategias de investigación antes no exploradas en nuestro país. Los resultados más relevantes de esta investigación serán progresivamente publicados en sucesivos números de Actualizaciones en SIDA. PMID:25264397

  12. [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.

  13. 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

  14. 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

  15. 2001 AIR & WASTE MANAGEMENT ASSOCIATION DELEGATION TO CHINA

    Science.gov (United States)

    The paper describes a visit to the People's Republic of China (China) by members of the Air & Waste Management Association in October-November 2001 as part of a People to People Ambassador Program delegation. The delegation's main goal was to exchange information in the field of ...

  16. 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

  17. 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.

  18. Federalismo y políticas ambientales en la Región Metropolitana de Buenos Aires, Argentina

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    Ricardo A Gutiérrez

    2012-05-01

    Full Text Available La articulación entre la escala metropolitana de los problemas y la multiplicidad de jurisdicciones gubernamentales constituye un desafío para cualquier política ambiental. Centrado en la Región Metropolitana de Buenos Aires, este trabajo aborda la coordinación de políticas ambientales metropolitanas en un contexto federal. La primera parte describe la región metropolitana, el modo en que el federalismo argentino distribuye competencias ambientales entre niveles de gobierno, los mecanismos institucionales para la gestión metropolitana y las características y principales deficiencias de las organizaciones interjurisdiccionales que operan en la región metropolitana. La segunda parte discute los factores que explican esas deficiencias. Se argumenta que las fallas de coordinación metropolitana de políticas ambientales se explican por la interacción entre las instituciones federales y otras variables del sistema político, como la lógica de acumulación partidaria, la configuración de las agendas de gobierno, el papel de las burocracias estatales y el impacto del activismo ambiental.In any metropolitan region, the articulation between metropolitan scale of issues and the multiplicity of government jurisdictions poses a challenge for the implementation of environmental policies. Focused on the Buenos Aires Metropolitan Region, this article examines the coordination of metropolitan environmental policies in a federal context. The first part describes the metropolitan region and its main environmental problems, the way in which Argentine federalism assigns environmental competences to the different government levels and the mechanisms it sets for metropolitan governance, and the characteristics and flaws of the inter-jurisdictional organizations at work in the metropolitan region. The second part discusses the factors explaining those flaws. It argues that the shortcomings of the metropolitan coordination of environmental policies are

  19. El uso de la televisión en comunidades educativas.: Estudio cualitativo en Buenos Aires, Argentina 0 uso da televisão em comunidades educativas: Estudo qualitativo em Buenos Aires, Argentina The Use of Television in Educational Communities: A Qualitative Study in Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Patricia Nigro

    2011-04-01

    Full Text Available Se presentan los resultados de un estudio acerca del uso de la televisión en las comunidades educativas de escuelas primarias de clase media de la ciudad de Buenos Aires. Los objetivos fueron: describir las relaciones que surgen cuando se dialoga con padres, docentes y alumnos acerca de qué es la televisión y cómo la utilizan los niños de la clase media porteña. El método empleado fue el cualitativo. Se realizaron 63 entrevistas profundas, a docentes, padres y alumnos de cuarto y quinto grados (de 9 y 10 años, y posteriormente se categorizaron las respuestas para su análisis. Entre las conclusiones se encontró que los educadores (padres y maestros no pueden ponerse de acuerdo sobre cuáles son las influencias educativas de la televisión en los niños; que los padres sienten que son responsables de los consumos mediáticos de sus hijos, y que los niños consumen gran cantidad de programas para adultos.Este artigo apresenta os resultados de um estudo sobre o uso da televisão nas comunidades educativas de escolas de ensino de primeiro grau da classe média na cidade de Buenos Aires. Os objetivos foram descrever as relações que surgem ao dialogar com pais, professores e alunos sobre o que é televisão e como a utilizam as crianças de classe média de Buenos Aires. O método foi qualitativo. Foram realizadas 63 entrevistas em profundidade a professores, pais e alunos de quarto e quinto garus (9 e 10 anos. As respostas foram categorizadas para análise. Entre os resultados verificou-se que os educadores (pais e professores não pode concordar em quais são as influências educativas da televisão sobre as crianças; os pais sentem que são responsáveis pelo consumo mediático de seus filhos; as crianças consomem grandes quantidades de programas para adultos.The results of a study on the use of television in the educational communities of middle-class elementary schools in the city of Buenos Aires are presented in this article. The

  20. The educational policy field origins in Argentina: the case of Buenos Aires and La Plata Federal Universities

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    Julieta Susana Garcias Franco

    2014-07-01

    Full Text Available This paper presents partial results of an ongoing study whose objective is to map the approaches and theoretical trends in the educational policy theoretical field. More specifically, this study characterizes and describes the theoretical trends of the subject Educational Policy contents in the 50s of the last century in the Buenos Aires and La Plata Federal Universities. 46 programs were analyzed in the period 1917-1959, as well as the bibliography and theoretical background linked to the professors who were responsible for the subject. Surveying professors’ biographies, it was observed that in the period prior to the institutionalization of this field, the debate focused on the positivism or anti-positivism theoretical trends. Later on, the theoretical trends that permeated the programs from 1953 to 1954 had more distinct shades of positivism and anti-positivism than those of the beginning of the century, and three axes were observed: the national tradition, the pedagogical progressivism and the Spanish Krausism.

  1. Comparison of the air pollution biomonitoring ability of three Tillandsia species and the lichen Ramalina celastri in Argentina.

    Science.gov (United States)

    Bermudez, Gonzalo M A; Rodriguez, Judith H; Pignata, María L

    2009-01-01

    Bioaccumulation ability and response to air pollution sources were evaluated for Tillandsia capillaris Ruíz and Pav. f. capillaris, T. recurvata L., T. tricholepis Baker and the lichen Ramalina celastri (Spreng.) Krog. and Swinsc. Epiphyte samples collected from a non contaminated area in the province of Córdoba were transplanted to a control site and three areas categorised according to agricultural, urban and industrial (metallurgical and metal-mechanical) emission sources. Bioindicators were exposed for 3-, 6- and 9-month periods. A foliar damage index was established for Tillandsia and a pollution index for the lichen, and S, Fe, Mn and Zn concentrations were determined. An order of efficiency for the species and conditions studied is proposed taking into account heavy metal accumulation: T. recurvata >T. tricholepis >R. celastri >T. capillaris. All species studied showed Mn to be related to agricultural activity and Fe to industries and soil particles, and Zn was related to urban and industrial sources. As far as physiological response is concerned, T. tricholepis and T. capillaris were more sensitive to agricultural activities, whereas T. recurvata was sensitive to urban and industrial sources, and only partially to agricultural sources. No relationship was found for R. celastri.

  2. Proficiency in radiation protection, nuclear medicine and biomedicine in the Faculty of Biochemistry and Pharmaceutics, Universidad de Buenos Aires, Argentina

    International Nuclear Information System (INIS)

    Bergoc, Rosa M.; Caro, Ricardo A.; Rivera, Elena S.

    2001-01-01

    The School of Pharmacy and Biochemistry (Buenos Aires University) offers four annual courses on Methodology of Radioisotopes (which focus on different aspect of the Radiological Protection according to whom they are aimed: 1) Course for students in the Biochemistry Cycle; 2) Course for post-Graduate in Medicine, Biochemistry, Biology, Chemists; 3) Course to up-date the knowledge; 4) Course for Technicians in Nuclear Medicine. From 1960, 5000 biochemistry students have approved Methodology of Radioisotopes. The syllabus includes aspect related to the students' future professional activities. Since 1962, 1513 (?) graduates have approved it. Training (222 h) include: dosimetric magnitudes, units, internal and external dosimetry; working conditions, contamination barriers, radioprotection philosophy and principles; limits; radioactive wastes; legal aspects, national and international legislation. Uses of commonest isotopes in Nuclear Medicine and Biomedicine are under deep analysis. Since 1992 the graduates who wish to up-date their knowledge can follow this course organized in modules to suit their needs. Since 1997 this course emphasizes the operational aspects such as: columns elution, injection of radioactive drugs to patients, decontamination of areas. The increasing in the application of radioisotopes makes necessary to encourage their use in harmony with the environmental. (author)

  3. Parásitos en aguas del arroyo Naposta, aguas de recreación y de consumo en la ciudad de Bahia Blanca (Provincia de Buenos Aires, Argentina)

    OpenAIRE

    COSTAMAGNA, SIXTO RAÚL; VISCIARELLI, ELENA; LUCCHI, LEANDRO D; BASUALDO, JUAN A

    2005-01-01

    El objetivo del presente trabajo fue detectar la presencia de parásitos de importancia sanitaria para el hombre, en el arroyo Napostá, en aguas recreacionales (piscinas públicas) y de consumo en Bahía Blanca (Provincia de Buenos Aires) Argentina. Se recolectaron 24.000 litros de agua de diferentes sectores del arroyo Napostá, 2.000 litros de cada una de las tres piscinas públicas y 8.000 litros de agua de consumo, mediante filtros de poro de una micra de diámetro (Cuno Micro Wind). El procesa...

  4. Corrimiento del límite austral en tres especies de Pleopeltis (Polypodiaceae) y su posible relación con el cambio climático en Buenos Aires, Argentina

    OpenAIRE

    Guerrero, Elián L.; Cellini, Juan Manuel

    2017-01-01

    ResumenSe cita por primera vez para la provincia de Buenos Aires (Argentina) la especie Pleopeltis pleopeltifolia (Raddi) Alston. Además se brindan nuevas localidades para Pleopeltis minima (Bory) J. Prado & R.Y. Hirai y para P. macrocarpa (Bory ex Willd.) Kaulf. Las especies que motivan este artículo son características de los bosques en galería de la Mesopotamia. Las mismas parecen estar extendiendo su distribución geográfica hacia el sur, al igual que otras plantas vasculares y animales de...

  5. Extensión del límite austral de distribución de tres especies de peces óseos tropicales en la costa de la Provincia de Buenos Aires, Argentina

    OpenAIRE

    Milessi, Andres Conrado; Colonello, Jorge H.; Cortés, Federico; Lasta, Carlos Ángel; Waessle, Juan A.; Allega, Lucrecia

    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, 36º-38ºS). 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...

  6. Higher fuel prices are associated with lower air pollution levels.

    Science.gov (United States)

    Barnett, Adrian G; Knibbs, Luke D

    2014-05-01

    Air pollution is a persistent problem in urban areas, and traffic emissions are a major cause of poor air quality. Policies to curb pollution levels often involve raising the price of using private vehicles, for example, congestion charges. We were interested in whether higher fuel prices were associated with decreased air pollution levels. We examined an association between diesel and petrol prices and four traffic-related pollutants in Brisbane from 2010 to 2013. We used a regression model and examined pollution levels up to 16 days after the price change. Higher diesel prices were associated with statistically significant short-term reductions in carbon monoxide and nitrogen oxides. Changes in petrol prices had no impact on air pollution. Raising diesel taxes in Australia could be justified as a public health measure. As raising taxes is politically unpopular, an alternative political approach would be to remove schemes that put a downward pressure on fuel prices, such as industry subsidies and shopping vouchers that give fuel discounts. Copyright © 2014 Elsevier Ltd. All rights reserved.

  7. 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.

  8. Parasitismo larval de Crocidosema (=Epinotia aporema (Lepidoptera: Tortricidae en el noreste de la provincia de Buenos Aires (Argentina

    Directory of Open Access Journals (Sweden)

    Gerardo LILJESTHRÖM

    2005-01-01

    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.

  9. Dinámica y Evolución de las Barreras Medanosas, Provincia de Buenos Aires, Argentina

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    Frederico I. Isla

    2001-12-01

    Full Text Available Las barreras medanosas Oriental y Austral de Buenos Aires se originaron como consecuencia de la fluctuación holocena del nivel del mar que dejó abundante sedimento litoral que migró hacia el interior. De acuerdo a dataciones radiocarbónicas de materiales obtenidos por debajo de los niveles medanosos se reconocen 3 ciclos de generación de médanos costeros. El primero se originó con posterioridad a la colmatación de ambientes estuarinos (estuarios, laguna costeras, lagunas estuarinas, marismas aproximadamente hace 6000-4000 años AP dependiendo de la disponibilidad de arena y profundidad del ambiente estuarino. El segundo ciclo de formación de médanos costeros corresponde a una regeneración que se dio entre 3500 y 2400 años AP en ambas barreras. El tercer ciclo es más moderno y corresponde a una reactivación que tuvo lugar entre 1600 y 500 años AP. Estos ciclos son aproximadamente coincidentes con otros que tuvieron lugar en el Hemisferio Sur (Sudáfrica, Nueva Zelandia y Australia. Actualmente, la dinámica de la barreras está siendo significativamente alterada localmente con la fijación, forestación, urbanización y drenaje de los médanos que incrementaron los problemas de erosión costera, y de escasez o contaminación de aguas subterráneas.

  10. 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.

  11. Acción social y nuevo Estado liberal en Argentina: La participación de las mujeres en las instituciones del modelo mixto de atención de necesidades en el centro y sur bonaerenses Social Action and the New Liberal State in Argentina: Women's Participation in Institutions based on the Mixed Model for Meeting Needs in the Center and South of Buenos Aires

    Directory of Open Access Journals (Sweden)

    Yolanda de Paz Trueba

    2011-08-01

    Full Text Available A fines del siglo XIX y en el marco de la consolidación del poder político en Argentina, encontramos una serie de vacíos que el Estado iba dejando, mismos que fueron ocupados por el accionar de asociaciones emanadas de la sociedad civil, en las que mujeres de los pueblos abordados en este trabajo adquirieron una presencia destacada. En el presente artículo buscamos analizar las relaciones entre ese Estado en formación y las instituciones locales destinadas a la atención de la salud y la educación, en comunidades del centro y sur bonaerenses, espacios no estudiados hasta el momento en esta clave, en el tránsito hacia el siglo XX cuando se resignificaron las funciones e importancia de organizaciones tradicionales como las abocadas a la práctica de la beneficencia, muchas de ellas de fuerte impronta católica.In the late 19th century and as part of the consolidation of political power in Argentina, we find a series of gaps left by the state, which were filled by the work of associations that emerged from civil society, in which the village women studied in this article acquired a noticeable presence. This article seeks to analyze relations between that nascent state and local institutions designed to provide health care and education in communities in the center and south of Buenos Aires. These spheres have not been studied in this sense to date, in the shift towards the 19th century when the functions and importance of traditional organizations such as charity organizations, many of which have a strong Catholic influence, were resignified.

  12. Intraoperative air leak measured after lobectomy is associated with postoperative duration of air leak.

    Science.gov (United States)

    Brunelli, Alessandro; Salati, Michele; Pompili, Cecilia; Gentili, Paolo; Sabbatini, Armando

    2017-11-01

    To verify the association between the air leak objectively measured intraoperatively (IAL) using the ventilator and the air leak duration after pulmonary lobectomy. Prospective analysis on 111 patients submitted to pulmonary lobectomy (33 by video-assisted thoracic surgery). After resection, objective assessment of air leak (in milliliter per minute) was performed before closure of the chest by measuring the difference between a fixed inspired and expired volume, using a tidal volume of 8 ml/kg, a respiratory rate of 10 and a positive-end expiratory pressure of 5 cmH2O. A multivariable analysis was performed for identifying factors associated with duration of postoperative air leak. Average IAL was 158 ml/min (range 0-1500 ml/min). The best cut-off (receiver-operating characteristics analysis) associated with air leak longer than 5 days was 500 ml/min. Nine patients had IAL >500 ml/min (8%). They had a longer duration of postoperative air leak compared with those with a lower IAL (mean values, 10.1 days, SD 8.8 vs 1.5 days, SD 4.9 P leak duration after multivariable regression: left side resection (P = 0.018), upper site resection (P = 0.031) and IAL >500 ml/min (P leak duration was generated: 1.7 + 2.4 × left side + 2.2 × upper site + 8.8 × IAL >500. The air leak measurement using the ventilator parameters after lung resection may assist in estimating the risk of postoperative prolonged air leak. An IAL > 500 ml/min may warrant the use of intraoperative preventative measures, particularly after video-assisted thoracic surgery lobectomy where a submersion test is often unreliable. © 2017 European Society of Cardiology and European Atherosclerosis Association. All rights reserved. For permissions please email: journals.permissions@oup.com.

  13. 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

    Directory of Open Access Journals (Sweden)

    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.

  14. Continental sedimentary successions exposed in Centinela del Mar, Buenos Aires, Argentina (Lower Pleistocene - Holocene); Las sucesiones sedimentarias continentales expuestas en Centinela del Mar, provincia de Buenos Aires, Argentina (Pleistoceno Inferior-Holoceno)

    Energy Technology Data Exchange (ETDEWEB)

    Cenizo, M. M.

    2011-07-01

    In the present paper, the geomorphologic and sedimentary characteristics of the continental sequences exposed on the coastal cliffs and surrounding areas of the Centinela del Mar locality are described and interpreted. Fourteen lithofacies are defined, their relation, geometry and structure are represented using transversal and longitudinal detailed profiles. In the basal and medium sector of the profile, facies of different degrees of transport and aqueous rework were recognized. In the superior sector, a succession of marine peri-coastal facies corresponding to the Belgranense transgression (=Fm. Pascua) were identified, ending the sequence with relictual eolic facies. The different historical interpretations are discussed, homologating the units referred previously with the ones proposed on this paper. These units are correlated with those defined in the allostratigrapic scheme proposed by other authors for the area covered between Playa San Carlos and Arroyo Chapadmalal. This allowed recognize for the area under study the presence of the Punta San Andres and Arroyo Loberia Alloformations (basal-medium and superior sector, respectively). Between these two entities, a association of well defined progradant marine facies are found and named on this paper as Centinela del Mar Alloformation. Finally, periferithe information gathered here (magnetostratigraphy, radiometric dating, stratigraphic correlations, etc) indicates, at least preliminarily, that the sequence of Centinela del Mar corresponds to the Ensenadense- Lujanense interval (Lower Pleistocene - Holocene). (Author) 73 refs.

  15. El bio-drenaje para el control del exceso hídrico en Pampa Arenosa, Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Margarita M. Alconada Magliano

    2009-10-01

    Full Text Available La región noroeste de la provincia de Buenos Aires presenta periodos cíclicos de inundación y sequía. En 1970 se inicia el último ciclo húmedo registrado con grandes inundaciones, ascenso de la superficie freática e importantes pérdidas económicas en el sector agropecuario, un deterioro ambiental y problemas sociales. El bio-drenaje es una técnica que utiliza la vegetación para manejar el flujo de agua subterránea en un paisaje mediante la evapotranspiración, su aplicación ha tenido buen resultado en diversos países para el control de: inundación, salinización del suelo y elevación de la superficie freática. Se propone la plantación de especies forestales con ganadería vacuna (silvopastoreo en áreas de recarga y tránsito de sistemas de flujo local de agua subterránea, y áreas de tránsito de flujos intermedios, y suelos Udipsament típicos, Ustipsament típicos, Hapludol éntico, y Haplustol éntico. Se evalúa la viabilidad financiera mediante rentas anual forestal y de silvopastoreo. Pinus taeda, Eucalyptus viminalis, y E. tereticornis, dieron resultado positivo. Prosopis sp y E. camaldulensis, no presentan una alternativa financieramente viable. Prosopis sp podría considerarse por buen comportamiento en época seca, mejora de la ganadería y control del agua freática. La correcta elección de sitios a implantar resulta primordial, donde la calidad y cantidad del flujo de agua subterránea debe establecerse por técnicas científicamente probadas. De esta manera, se aborda la problemática ambiental de inundación del noroeste bonoaerense, bajo una visión holística de la geografía física y ambiental, al proponer la importancia de conocer cómo funciona el paisaje, y entender su dinámica, evolución, y relación con los medios físico, biológico y humano. Visión que se propone como previa a la recomendación de prácticas de manejo que puedan considerarse como sustentables en términos ambientales, econ

  16. Changes in time-use and drug use by young adults in poor neighbourhoods of Greater Buenos Aires, Argentina, after the political transitions of 2001-2002: Results of a survey.

    Science.gov (United States)

    Rossi, Diana; Zunino Singh, Dhan; Pawlowicz, María Pía; Touzé, Graciela; Bolyard, Melissa; Mateu-Gelabert, Pedro; Sandoval, Milagros; Friedman, Samuel R

    2011-01-20

    In some countries, "Big Events" like crises and transitions have been followed by large increases in drug use, drug injection and HIV/AIDS. Argentina experienced an economic crisis and political transition in 2001/2002 that affected how people use their time. This paper studies how time use changes between years 2001 and 2004, subsequent to these events, were associated with drug consumption in poor neighbourhoods of Greater Buenos Aires. In 2003-2004, 68 current injecting drug users (IDUs) and 235 young non-IDUs, aged 21-35, who lived in impoverished drug-impacted neighbourhoods in Greater Buenos Aires, were asked about time use then and in 2001. Data on weekly hours spent working or looking for work, doing housework/childcare, consuming drugs, being with friends, and hanging out in the neighbourhood, were studied in relation to time spent using drugs. Field observations and focus groups were also conducted. After 2001, among both IDUs and non-IDUs, mean weekly time spent working declined significantly (especially among IDUs); time spent looking for work increased, and time spent with friends and hanging out in the neighbourhood decreased.We found no increase in injecting or non-injecting drug consumption after 2001. Subjects most affected by the way the crises led to decreased work time and/or to increased time looking for work--and by the associated increase in time spent in one's neighbourhood--were most likely to increase their time using drugs. Time use methods are useful to study changes in drug use and their relationships to every day life activities. In these previously-drug-impacted neighbourhoods, the Argentinean crisis did not lead to an increase in drug use, which somewhat contradicts our initial expectations. Nevertheless, those for whom the crises led to decreased work time, increased time looking for work, and increased time spent in indoor or outdoor neighbourhood environments, were likely to spend more time using drugs. These data suggest that

  17. Changes in time-use and drug use by young adults in poor neighbourhoods of Greater Buenos Aires, Argentina, after the political transitions of 2001-2002: Results of a survey

    Directory of Open Access Journals (Sweden)

    Mateu-Gelabert Pedro

    2011-01-01

    Full Text Available Abstract Background In some countries, "Big Events" like crises and transitions have been followed by large increases in drug use, drug injection and HIV/AIDS. Argentina experienced an economic crisis and political transition in 2001/2002 that affected how people use their time. This paper studies how time use changes between years 2001 and 2004, subsequent to these events, were associated with drug consumption in poor neighbourhoods of Greater Buenos Aires. Methods In 2003-2004, 68 current injecting drug users (IDUs and 235 young non-IDUs, aged 21-35, who lived in impoverished drug-impacted neighbourhoods in Greater Buenos Aires, were asked about time use then and in 2001. Data on weekly hours spent working or looking for work, doing housework/childcare, consuming drugs, being with friends, and hanging out in the neighbourhood, were studied in relation to time spent using drugs. Field observations and focus groups were also conducted. Results After 2001, among both IDUs and non-IDUs, mean weekly time spent working declined significantly (especially among IDUs; time spent looking for work increased, and time spent with friends and hanging out in the neighbourhood decreased. We found no increase in injecting or non-injecting drug consumption after 2001. Subjects most affected by the way the crises led to decreased work time and/or to increased time looking for work--and by the associated increase in time spent in one's neighbourhood--were most likely to increase their time using drugs. Conclusions Time use methods are useful to study changes in drug use and their relationships to every day life activities. In these previously-drug-impacted neighbourhoods, the Argentinean crisis did not lead to an increase in drug use, which somewhat contradicts our initial expectations. Nevertheless, those for whom the crises led to decreased work time, increased time looking for work, and increased time spent in indoor or outdoor neighbourhood environments, were

  18. Association between air pollution and ischemic cardiovascular emergency room visits

    International Nuclear Information System (INIS)

    Lin, C.A.; Amador Pereira, L.A.; Souza onceicao, G.M. de; Kishi, H.S.; Milani, Rodolfo; Ferreira Braga, A.L.; Ascimento Saldiva, P.H.

    2003-01-01

    This study observed the relationship between air pollutants and ischemic cardiac diseases such as angina and acute myocardial infarction in a representative cardiovascular center emergency room in Sao Paulo, Brazil. Daily emergency room admissions to the Institute of the Heart of the university of Sao Paulo, as well as data concerning daily air pollutant levels and meteorological variables, were collected from January 1994 to august 1995. Generalized additive Poisson regressions were fitted to the logarithm of the expected values of total emergency room visits due to angina or acute myocardial infarction, controlling for smooth functions of season and weather and indicators for days of the week. All investigated pollutants were positively associated with ischemic cardiovascular disease emergency room visits, and the time lags were relatively short, but only CO presented in effect that was statistically significant. An interquartile range increase n CO was associated with an increase of 6.4% (95% CI: 0.7-12.1) in daily angina or acute myocardial infarction emergency room visits. This result did not change when estimates were done using linear models and natural cubic plines. This study showed that air pollution has a role in cardiovascular morbidity in Sao Paulo, reinforcing the necessity for air pollutant mission-controlling polices in urban areas

  19. The association between air pollution and mortality in Thailand.

    Science.gov (United States)

    Guo, Yuming; Li, Shanshan; Tawatsupa, Benjawan; Punnasiri, Kornwipa; Jaakkola, Jouni J K; Williams, Gail

    2014-07-01

    Bayesian statistical inference with a case-crossover design was used to examine the effects of air pollutants {Particulate matter pollutants had significant short-term impacts on non-accidental mortality. An increase of 10 μg/m(3) in PM10, 10 ppb in O₃, 1 ppb in SO₂ were associated with a 0.40% (95% posterior interval (PI): 0.22, 0.59%), 0.78% (95% PI: 0.20, 1.35%) and 0.34% (95% PI: 0.17, 0.50%) increase of non-accidental mortality, respectively. O₃ air pollution is significantly associated with cardiovascular mortality, while PM10 is significantly related to respiratory mortality. In general, the effects of all pollutants on all mortality types were higher in summer and winter than those in the rainy season. This study highlights the effects of exposure to air pollution on mortality risks in Thailand. Our findings support the Thailand government in aiming to reduce high levels of air pollution.

  20. HIPEROSTOSIS ESQUELÉTICA DIFUSA IDIOPÁTICA EN UNA COLECCIÓN OSTEOLÓGICA CONTEMPORÁNEA (LA PLATA, BUENOS AIRES, ARGENTINA / Difusse Idiopathic Skeletal Hyperostosis in a contemporary osteological collection (La Plata, Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Marcos Plischuk

    2015-06-01

    Full Text Available La Hiperostosis Esquelética Difusa Idiopática (DISH es una enfermedad caracterizada por provocar anquilosis entre cuerpos vertebrales, sumada a la osificación masiva de ligamentos y tendones en el resto del sistema esqueletal. El objetivo del presente trabajo es establecer la prevalencia de DISH en una colección osteológica documentada contemporánea y discutir rasgos patognomónicos y factores de riesgo asociados. A fin de establecer un diagnóstico se relevó, en 100 individuos adultos, la formación de bloques óseos de al menos tres vertebras fusionadas por la osificación de ligamento vertebral anterior. Se consideró además que no estuvieran comprometidos los espacios intervertebrales y la articulación sacroilíaca. En la zona extra espinal se registraron como evidencia complementaria la presencia de entesopatías. Como resultado del análisis se observaron seis individuos con DISH, sin diferencias significativas entre ambos sexos. El segmento vertebral principalmente afectado fue el torácico, los espacios intervertebrales no se vieron comprometidos en ningún caso y la articulación sacroilíaca tampoco presentó señales de osificación patológica; a la vez que se relevaron numerosas entesopatías. Las prevalencias observadas se deberían a la avanzada edad de los individuos analizados y las características nutricionales de la población de referencia.  Abstract  The diffuse idiopathic skeletal hyperostosis (DISH is a disease characterized by vertebral ankylosis, with massive ligaments and tendons ossification in the rest of the skeletal system. The aim of this study is to establish the prevalence of DISH in a well-documented and contemporary osteological collection, and to discuss pathognomonic features and associated risk factors. In order to establish the diagnosis, we registered, in 100 adults, the formation of bone blocks, with at least three fused vertebrae by ossification of the anterior vertebral ligament. It was

  1. APORTES A LA CRONOLOGÍA DE LA CASA DE JUAN FUGL (TANDIL, BUENOS AIRES, ARGENTINA A PARTIR DE ESTUDIOS ARQUEOMAGNÉTICOS (Contribution to the Chronology of the Juan Fugl House (Tandil, Buenos Aires, Argentina based on Archaeomagnetic Studies

    Directory of Open Access Journals (Sweden)

    Claudia Gogorza

    2018-06-01

    Full Text Available La aparición de vestigios de construcciones subterráneas y antiguas canteras de arena, en forma de túneles, en el casco histórico de la ciudad de Tandil ha generado una serie de mitos urbanos. Estos relacionan la fundación del Fuerte Independencia (FI de 1823 con los posteriores asentamientos de eurocriollos en la frontera sur, momentos en que empieza a edificarse la ciudad de Tandil. Esas cavidades son atribuidas a galerías de escape por el riesgo de «malones realizados por los indios». Muchas de estas asociaciones fueron realizadas por historiadores locales basándose en la «bravura de los originarios» y el hallazgo fortuito de estructuras subterráneas descubiertas por operarios o residentes diversos. El resurgimiento de esta información en los medios de prensa reabre la hipótesis explicativa sobre los túneles del FI y la comunicación de estos con las primeras casas construidas alrededor de la fortificación. Uno de estos edificios fue la vivienda de Juan Fugl, principal precursor de la ciudad. El objetivo de este trabajo es datar ladrillos de la casa de Juan Fugl mediante estudios arqueomagnéticos con la finalidad de establecer la cronología de su ocupación con la del FI y proporcionar evidencias más ajustadas sobre la relación entre esta vivienda y las construcciones subterráneas arriba mencionadas. ENGLISH: The appearance of vestiges of tunnel-like underground constructions and ancient sand quarries in the historic center of the city of Tandil has generated a series of urban myths. These link the foundation of Fuerte Independencia (FI in 1823, when the city was founded, with the subsequent settlements of “euro-criollos” on the southern border. The cavities are thought to be escape tunnels created because of the risk of “raids” carried out by the Indians. Many of these associations were made by local historians based on the “bravery of the settlers” and the fortuitous finding of underground structures

  2. Características químicas determinan la capacidad micotrófica arbuscular de suelos agrícolas y prístinos de Buenos Aires (Argentina Chemical characteristics as determinants of arbuscular mycotrophic ability of agricultural and pristine soils from Buenos Aires (Argentina

    Directory of Open Access Journals (Sweden)

    Fernanda Covacevich

    2012-12-01

    Full Text Available Los suelos de la provincia de Buenos Aires (Argentina presentan muy buenas características físicas y químicas para la producción agrícola, así como elevada diversidad microbiana. Sin embargo, la continua explotación agrícola del suelo, con permanente extracción de nutrientes, aceleró su degradación, afectó su fertilidad natural y las poblaciones microbianas po-tencialmente benéficas como los hongos formadores de micorrizas arbusculares (HMA, aspecto que ha sido poco explorado. El objetivo de este trabajo es identificar cambios en el contenido de nutrientes en suelos sometidos a manejos agrícolas contrastantes que podrían incidir en la capacidad micotrófica de los HMA. Se tomaron muestras de suelo de 29 sitios de la provincia de Buenos Aires bajo manejo agrícola, o sin uso (prístino. Se determinaron las características químicas (CIC, Fe, Mn, Cu, Zn, B, P-Bray, CO y pH, así como el grado de micorrización nativa, luego de 12 semanas desde la instalación de cultivos trampa. Los valores de las características químicas fueron, en general, mayores para los sitios prístinos que para los que estuvieron bajo agricultura. Sin embargo, la intensidad de micorrización no fue significativamente diferente en relación al manejo del suelo. El análisis de componentes principales permitió agrupar por una parte los sitios que se encontraban bajo agricultura y por otra parte los sitios prístinos. El contenido de P disponible en el suelo, juntamente con el contenido de Fe parecerían ser los principales depresores de la capacidad micotrófica de los suelos analizados, particularmente en condiciones de moderado a bajo contenido de Carbono Orgánico.The soils of Buenos Aires Province (Argentina have very good physical and chemical properties for agricultural production, and also a high microbial diversity. However, the continuous cropping of agricultural soils with a high nutrient removal rate has accelerated its degradation. Consequently

  3. High prevalence of syphilis-HIV co-infection at four hospitals of the City of Buenos Aires: Argentina Alta prevalencia de co-infección sífilis-VIH en cuatro hospitales de la Ciudad de Buenos Aires: Argentina

    Directory of Open Access Journals (Sweden)

    G. Griemberg

    2006-09-01

    Full Text Available A cross-sectional anonymous study of 261 STD (sexually transmitted diseases outpatients and 288 outpatients from other hospital departments was conducted at four major city hospitals in Buenos Aires. High prevalence of human immunodeficiency virus (HIV (14.5% and syphilis (30.2% was noted. Fifty-two persons were diagnosed with both HIV and syphilis. Of the 87 HIV cases observed, 52 (59.7% were co-infected with syphilis. Stratified analysis by gender showed that the prevalence of HIV, syphilis and HIV/syphilis co-infection was significantly (pSe realizó un estudio transversal no vinculante entre pacientes ambulatorios de cuatro grandes hospitales de Buenos Aires, 261 provenían de consultorios de enfermedades de transmisión sexual (ETS y 288 de otros servicios. Se observó una alta prevalencia del virus de la inmunodeficiencia humana (VIH (14,5% y sífilis (30,2%. En cincuenta y dos pacientes se diagnosticaron ambas infecciones. De los 87 casos VIH, 52 (59,7% estaban coinfectados con sífilis. El análisis estratificado por sexo demostró que la prevalencia de VIH, sífilis y coinfección VIH/sífilis fue significativamente (p<0,001 más alta en hombres que en mujeres (VIH: 20,1% vs. 4,6%; sífilis: 39,3% vs. 17,4%; coinfección: 13,6% vs. 1,7%. En la Argentina se requieren programas integrados de intervención VIH/ETS y una más efectiva vigilancia epidemiológica.

  4. Air and Waste Management Association 86th annual meeting and exhibition

    International Nuclear Information System (INIS)

    Anon.

    1993-01-01

    This book presents conference abstracts from the 1993 meeting of the Air and Waste Management Association. General topics include air pollutants and their modeling, transport, monitoring, and control; atmospheric chemistry; air pollution sources, including mobile and stationary pollutant sources; health risks of air pollution; waste management, processing, and disposal; urban air quality; remedial actions for contaminated sites; air pollution in Europe; meteorolgy and terrain considerations in air pollution

  5. The effects of hydraulic works and wetlands function in the Salado-River basin (Buenos Aires, Argentina).

    Science.gov (United States)

    Bazzuri, M E; Gabellone, N A; Solari, L C

    2018-01-26

    Man-made activities exert great influences on fluvial ecosystems, with lowland rivers being substantially modified through agricultural land use and populations. The recent construction of drainage canals in the upper stretch of the Salado-River basin caused the mobilization of huge amounts of salts formerly stored in the groundwater. The main aim of this work was to analyze the effect of the discharges of those canals into the Salado-River water, under different hydrologic conditions, and the role of the wetlands and shallow lakes placed along the canals' system. Physicochemical variables were measured and water samples were taken during times of high water, mean flows, drought, and extreme drought. The environmental variables and the plankton development were related to the hydrologic regime and reached minimum values during floods because of low temperatures and dilution. Local effects on the water's ionic composition became pronounced during droughts because of groundwater input. Nutrient concentrations were mainly associated with point wastewater discharges. Conductivity, ion concentrations, total plankton biomass, and species richness increased in the Salado-River downstream site, after the canals' discharges. The artificial-drainage system definitely promotes the incorporation of salts into the Salado-River basin. In this scenario, a careful hydraulic management is needed to take into account this issue of secondary salinization that threatens the economic exploitation of the region. The wetlands present in this study acted as service environments not only helping to reduce salt, nutrient, and suspended-solid concentrations downstream but also contributing a plethora of species and plankton biomass into the Salado-River main course.

  6. Association between air pollutants and dementia risk in the elderly.

    Science.gov (United States)

    Wu, Yun-Chun; Lin, Yuan-Chien; Yu, Hwa-Lung; Chen, Jen-Hau; Chen, Ta-Fu; Sun, Yu; Wen, Li-Li; Yip, Ping-Keung; Chu, Yi-Min; Chen, Yen-Ching

    2015-06-01

    The aging rate in Taiwan is the second highest in the world. As the population ages quickly, the prevalence of dementia increases rapidly. There are some studies that have explored the association between air pollution and cognitive decline, but the association between air pollution and dementia has not been directly evaluated. This was a case-control study comprising 249 Alzheimer's disease (AD) patients, 125 vascular dementia (VaD) patients, and 497 controls from three teaching hospitals in northern Taiwan from 2007 to 2010. Data of particulate matter Bayesian maximum entropy was used to estimate the individual exposure level of air pollutants, which was then tertiled for analysis. Conditional logistic regression models were used to estimate adjusted odds ratios (AORs) and 95% confidence intervals between the association of PM10 and ozone exposure with AD and VaD risk. The highest tertile of PM10 (≥49.23 μg/m(3)) or ozone (≥21.56 ppb) exposure was associated with increased AD risk (highest vs. lowest tertile of PM10: AOR = 4.17; highest vs. lowest tertile of ozone: AOR = 2.00). Similar finding was observed for VaD. The association with AD and VaD risk remained for the highest tertile PM10 exposure after stratification by APOE ɛ4 status and gender. Long-term exposure to the highest tertile of PM10 or ozone was significantly associated with an increased risk of AD and VaD.

  7. Requirement, balance and energy efficiency under two models of cropping systems in the center-south of Buenos Aires, Argentina.

    Science.gov (United States)

    Zamora, Martin; Barbera, Agustin; Hansson, Alejandro; Carrasco, Natalia; Domenech, Marisa

    2017-04-01

    In a natural ecosystem, the solar energy is the main source. However, in the agro ecosystem we should use others in order to sustain specific processes or to avoid some interactions. This energy is introduced in the agro-system not only as fossil fuel but also as inputs like fertilizers and pesticides or for agricultural machines. Since February 2011, two adjacent fields were set at Barrow Experimental Station (Lat:-38.322844, Lon:-60.25572): one of them adopting agro-ecology principles (AGROE), as biodiversity increase, polyculture with legumes, less use of agrochemicals; while the other one is based on industrial model of agriculture (ACTUAL). This model is defined by its capital intensity and dependence on massive inputs like seeds, fertilizer, and pesticides. In both fields, beef cattle and agriculture production have been implemented with different intensity. The aim of this study was to compare the demand, production, balance and energy efficiency between these two agro-systems. To do this, we use tables of energy associated with different processes and inputs. For both systems, we estimate the energetic demand used in seeds, pesticides, fertilizers and labor during the crop sequence from February 2011 to December 2015; the energy production according to grains and meat yield achieved; the energetic balance calculated as the difference between inputs and outputs of energy in the system and finally, the energy efficiency which is the ratio between the energy produced and consumed. Inputs-outputs ratios of energy were transformed into equivalent units = GJ (Gigajoules). After a sequence of seven crops, ACTUAL consumed 60 GJ, which represents 158% more energy than AGROE. Particularly, ACTUAL consumed a 72% more energy in cultivation labor, 372% more in herbicides and 10 times more energy used in fertilizers than AGROE. Even though ACTUAL produced 37% more energy than AGROE (187 GJ vs 127 GJ) in grain and meat, the energetic balance was only 12% higher. However

  8. Association of indoor air pollution with rhinitis symptoms, atopy and nitric oxide levels in exhaled air

    DEFF Research Database (Denmark)

    Hersoug, Lars-Georg; Husemoen, Lise Lotte N; Thomsen, Simon Francis

    2010-01-01

    Exposure to particulate matter (PM) outdoors can induce airway inflammation and exacerbation of asthma in adults. However, there is limited knowledge about the effects of exposure to indoor PM. The aim of this study was to investigate the association of exposure to indoor sources of PM...... with rhinitis symptoms, atopy and nitric oxide in exhaled air (FeNO) as a measure of airway inflammation....

  9. Las sucesiones sedimentarias continentales expuestas en Centinela del Mar, provincia de Buenos Aires, Argentina (Pleistoceno Inferior-Holoceno

    Directory of Open Access Journals (Sweden)

    Cenizo, Marcos M.

    2011-06-01

    Full Text Available In the present paper, the geomorphological and sedimentary characteristics of the continental sequences exposed on the coastal cliffs and surrounding areas of the Centinela del Mar locality are described and interpreted. Fourteen lithofacies are defined, their relation, geometry and structure are represented using transversal and longitudinal detailed profiles. In the basal and medium sector of the profile, facies of different degrees of transport and aqueous rework were recognized. In the superior sector, a succession of marine peri-coastal facies corresponding to the «Belgranense» transgression (=Fm. Pascua were identified, ending the secuence with relictual eolic facies. The different historical interpretations are discussed, homologating the units referred previously with the ones proposed on this paper. These units are correlated with those defined in the allostratigrapic scheme proposed by other authors for the area covered between Playa San Carlos and Arroyo Chapadmalal. This allowed recognize for the area under study the presence of the Punta San Andrés and Arroyo Lobería Alloformations (basal-medium and superior sector, respectively. Between these two entities, a association of well defined progradant marine facies are found and named on this paper as Centinela del Mar Alloformation. Finally, the information gathered here (magnetostratigraphy, radiometric dating, stratigraphic correlations, etc indicates, at least preliminarily, that the secuence of Centinela del Mar corresponds to the Ensenadense-Lujanense interval (Lower Pleistocene - Holocene.

    Son descriptas e interpretadas las características geomorfológicas y sedimentarias de las sucesiones continentales expuestas en los acantilados litorales y sectores aledaños de la localidad Centinela del Mar. Se definen catorce litofacies, cuyas relaciones, geometría y estructuras son representadas mediante perfiles transversales y longitudinales de detalle. En el sector basal y

  10. Nuclear Activities in Argentina, 2010

    International Nuclear Information System (INIS)

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

    2011-01-01

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

  11. Air pollution and mortality: Determination of a quantitative association

    Energy Technology Data Exchange (ETDEWEB)

    Ostro, B

    1994-07-01

    Over the last few decades, several epidemiologic studies have reported associations between daily concentrations of ambient particulate matter and mortality among the general population. Among these studies, statistically significant relationships have been found using several alternative measures of particulate matter including total suspended particulates (TSP) for particles of all sizes], fine particles (particles less than 25 microns in diameter), British smoke (BS), coefficient of haze (COH), and sulfates. None has involved measurement of the mass of particulate matter less than 10 microns in diameter (PM10), the metric used by the U.S. Environmental Protection Agency (EPA) in the National Ambient Air Quality Standards. The studies have been conducted in several different cities and seasons, thereby incorporating a wide range of climates, chemical compositions of particulate matter, and populations. The epidemiologic. investigations have used two principal study designs: time-series and cross-sectional. Time-series analysis examines changes in daily mortality rates within a specific area as air pollution levels fluctuate. A cross-sectional analysis compares differences in mortality rates across several cities at a selected point or period of time. This paper seeks to examine the air pollution-mortality association in view of these criteria, with particular focus on the consistency of the association. Replication of results in other environments and populations is a powerful test before causality can be inferred. The check for consistency will be accomplished by reviewing and comparing the results of the more recent empirical studies. Ultimately, the results of these calculations are presented in terms of the percent increase in mortality associated with changes in PM{sub 10}. After examining the consistency of the associations, some of the other criteria will be briefly discuss.

  12. Air pollution and mortality: Determination of a quantitative association

    International Nuclear Information System (INIS)

    Ostro, B.

    1994-01-01

    Over the last few decades, several epidemiologic studies have reported associations between daily concentrations of ambient particulate matter and mortality among the general population. Among these studies, statistically significant relationships have been found using several alternative measures of particulate matter including total suspended particulates (TSP) for particles of all sizes], fine particles (particles less than 25 microns in diameter), British smoke (BS), coefficient of haze (COH), and sulfates. None has involved measurement of the mass of particulate matter less than 10 microns in diameter (PM10), the metric used by the U.S. Environmental Protection Agency (EPA) in the National Ambient Air Quality Standards. The studies have been conducted in several different cities and seasons, thereby incorporating a wide range of climates, chemical compositions of particulate matter, and populations. The epidemiologic. investigations have used two principal study designs: time-series and cross-sectional. Time-series analysis examines changes in daily mortality rates within a specific area as air pollution levels fluctuate. A cross-sectional analysis compares differences in mortality rates across several cities at a selected point or period of time. This paper seeks to examine the air pollution-mortality association in view of these criteria, with particular focus on the consistency of the association. Replication of results in other environments and populations is a powerful test before causality can be inferred. The check for consistency will be accomplished by reviewing and comparing the results of the more recent empirical studies. Ultimately, the results of these calculations are presented in terms of the percent increase in mortality associated with changes in PM 10 . After examining the consistency of the associations, some of the other criteria will be briefly discuss

  13. New K-Ar ages of volcanic rocks and associated mineralization in Canada Honda district, San Luis, Argentina

    International Nuclear Information System (INIS)

    Urbina, N.E.; Oggier, F.P

    2001-01-01

    New K-Ar ages in the Late Tertiary gold-bearing volcanic belt of the Sierras Pampeanas of San Luis, Argentina are presented. At Canada Honda district, an age of 8.49±0.2 Ma yielded by Cerro del Valle andesite indicates that the dome emplacement postdates the Diente Verde eruptive event. An even younger age of 7.3±0.2 Ma was obtained for illite from hydrothermal alteration at La Reynela mineralization which is hosted by Cerro del Valle andesite (au)

  14. The association of air temperature with cardiac arrhythmias

    Science.gov (United States)

    Čulić, Viktor

    2017-11-01

    The body response to meteorological influences may activate pathophysiological mechanisms facilitating the occurrence of cardiac arrhythmias in susceptible patients. Putative underlying mechanisms include changes in systemic vascular resistance and blood pressure, as well as a network of proinflammatory and procoagulant processes. Such a chain reaction probably occurs within the time window of several hours, so use of daily average values of meteorological elements do not seem appropriate for investigation in this area. In addition, overall synoptic situation, and season-specific combinations of meteorological elements and air pollutant levels probably cause the overall effect rather than a single atmospheric element. Particularly strong interrelations have been described among wind speed, air pressure and temperature, relative air humidity, and suspended particulate matter. This may be the main reason why studies examining the association between temperature and ventricular arrhythmias have found linear positive, negative, J-shaped or no association. Further understanding of the pathophysiological adaptation to atmospheric environment may help in providing recommendations for protective measures during "bad" weather conditions in patients with cardiac arrhythmias.

  15. Polymorphisms associated with resistance to protease inhibitors in naïve patients infected with hepatitis C virus genotype 1 in Argentina: Low prevalence of Q80K.

    Science.gov (United States)

    Martínez, Alfredo P; Culasso, Andrés C A; Pérez, Paula S; Romano, Vanesa; Campos, Rodolfo H; Ridruejo, Ezequiel; García, Gabriel; Di Lello, Federico A

    2017-08-15

    Incorporation of direct acting antivirals (DAA) in the treatment of Hepatitis C Virus (HCV) significantly increases sustained virologic response rates. However, despite the greater potency offered by these antivirals, drug resistance plays a key role in patients with failure to DAA. Nevertheless, there is no information about the prevalence of resistance-associated substitutions (RASs) in Argentina. The aim of this study was to analyze HCV variants resistant to protease inhibitors (PI) in naïve patients infected with HCV genotype 1 from Argentina. In this retrospective cross-sectional study, 103 patients infected with HCV-1 were included. Eighteen positions related with RASs were analyzed by Sanger at baseline and phylogenetic analysis was performed to determine the diversification of this samples. The analyzed RASs were present in 38 out of 103 patients (36.9%) infected with HCV-1. Patients infected with subtype HCV-1b had higher prevalence of baseline RASs than patients infected with HCV-1a [51.6% vs. 12.8%, respectively (presistance in patients who will be treated with DAA in each particular country since the observed RASs have very different prevalence worldwide. Copyright © 2017 Elsevier B.V. All rights reserved.

  16. [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.

  17. TRICHODERMA SPECIES ASSOCIATED WITH ACROMYRMEX ANT NESTS FROM ARGENTINA AND FIRST REPORT OF TRICHODERMA LENTIFORME FOR THE COUNTRY

    Directory of Open Access Journals (Sweden)

    Natalia G. Armando

    2017-01-01

    Full Text Available Este trabajo tiene como objetivo la identificación morfológica y molecular de cinco especies de Trichoderma asociadas con los nidos de hormigas cortadoras de hojas del género Acromyrmex presentes en Argentina. Las especies identificadas fueron: T. lentiforme, T. inhamatum, T. virens, T. koningiopsis y T. aff. neotropicale resultando éste el primer registro de T. lentiforme y T. inhamatum asociados a hormigas cortadoras de hojas Acromyrmex, en particular Acromyrmex lobicornis y Acromyrmex lundii para el primero y de A. lobicornis para el segundo. Además T. lentiforme representa el primer registro para la Argentina. En este trabajo se amplían medidas del conidióforo y conidios y se aportan datos adicionales sobre la distribución de las especies de Trichoderma en el país. Se ilustran con fotografías los conidióforos, células conidiógenas, conidios y el fenotipo de la colonia para cada especie.

  18. 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

  19. Pulmonary air leak associated with CPAP at term birth resuscitation.

    Science.gov (United States)

    Hishikawa, Kenji; Goishi, Keiji; Fujiwara, Takeo; Kaneshige, Masao; Ito, Yushi; Sago, Haruhiko

    2015-09-01

    The Japan Resuscitation Council (JRC) Guidelines 2010 for neonatal resuscitation introduced continuous positive airway pressure (CPAP) in delivery room. The present study evaluated the effect of CPAP for pulmonary air leak at term birth. This retrospective single-centre study used the data of term neonates who were born without major congenital anomalies at our centre between 2008 and 2009, and between 2011 and 2012. Resuscitation according to the JRC Guidelines 2010. We examined the association between the JRC Guidelines 2010, CPAP by face mask and pulmonary air leak. A total of 5038 infants were analysed. The frequency of CPAP by face mask increased after the update of the JRC Guidelines in 2010 (1.7% vs 11.1%; pneonates (37 weeks: adjusted OR (aOR) 4.37; 95% CI 1.40 to 17.45; 38 weeks: aOR 2.80; 95% CI 1.04 to 8.91), but this association disappeared while adjusting for face mask CPAP additionally (37 weeks: aOR 1.90; 95% CI 0.47 to 8.71; 38 weeks: aOR 1.66; 95% CI 0.54 to 5.77). Following the update of the JRC guidelines on neonatal resuscitation, we observed an increased use of CPAP via face mask, which was associated with a higher prevalence of pulmonary air leak in early-term neonates in our centre. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  20. Different immunomodulatory effects associated with sub-micrometer particles in ambient air from rural, urban and industrial areas

    International Nuclear Information System (INIS)

    Wichmann, Gunnar; Franck, Ulrich; Herbarth, Olf; Rehwagen, Martina; Dietz, Andreas; Massolo, Laura; Ronco, Alicia; Mueller, Andrea

    2009-01-01

    Immunomodulatory effects of chemicals adsorbed to particles with aerodynamic diameter below 0.49 μm (PM 0.5 ) collected in winter 2001 at three sampling points (industrial area [LPIn], traffic-influenced urban area [LPCi], and control area [LPCo]) of La Plata, Argentina, were investigated. The sampling of particulate matter was carried out with high-volume collectors using cascade impactors. PM 0.5 -adsorbed compounds were hexane-extracted by accelerated solvent extraction. For immunological investigations, human peripheral blood lymphocytes were activated by phytohemagglutinin and exposed to dimethyl-sulfoxide dilutions of PM 0.5 -extracts for 24 h. Vitality/proliferation was quantified using MTT, released interferon-γ (IFN-γ) and interleukin-4 (IL-4) by ELISA. Cytokine production but not vitality/proliferation was significantly suppressed by all of the highest extract concentrations. Generally, suppression of IFN-γ by PM 0.5 -extracts was stronger than those of IL-4. Based on administered mass of PM 0.5 , all extracts suppressed IFN-γ production nearly uniform. Contrary, LPCi-extracts exerted maximum IFN-γ suppression based either on air volume or regarding PM 0.5 -adsorbed PAH. Also the ranking of PM 0.5 -associated effects on IL-4 production differs in dependence of the chosen reference points, either mass or [μg/ml] or air volume [m 3 /ml] related dust quantities in cell culture. Based on the corresponding air volume, LPCi-extracts inhibited IL-4 production to the maximum extend, whereas suppression of IL-4 was comparable based on concentrations. This indicates that not only the disparate PM 0.5 -masses in air cause varying impacts, but also that disparities in PM 0.5 -adsorbed chemicals provoke different effects on immune responses and shifts in the regulatory balance that might have implications for allergy and cancer development

  1. Air pollution episodes associated with East Asian winter monsoons

    Energy Technology Data Exchange (ETDEWEB)

    Hien, P.D., E-mail: pdhien@gmail.com [Vietnam Atomic Energy Agency, 59 Ly Thuong Kiet str. Hanoi (Viet Nam); Loc, P.D.; Dao, N.V. [National Hydro-Meteorological Center, 62-A2 Nguyen Chi Thanh str. Hanoi (Viet Nam)

    2011-11-01

    A dozen multi-day pollution episodes occur from October to February in Hanoi, Vietnam due to prolonged anticyclonic conditions established after the northeast monsoon surges (cold surges). These winter pollution episodes (WPEs) account for most of the 24-h PM{sub 10} exceedances and the highest concentrations of gaseous pollutants in Hanoi. In this study, WPEs were investigated using continuous air quality monitoring data and information on upper-air soundings and air mass trajectories. The 24-h pollutant concentrations are lowest during cold surges; concurrently rise thereafter reaching the highest levels toward the middle of a monsoon cycle, then decline ahead of the next cold surge. Each monsoon cycle usually proceeds through a dry phase and a humid phase as Asiatic continental cold air arrives in Hanoi through inland China then via the East China Sea. WPEs are associated with nighttime radiation temperature inversions (NRTIs) in the dry phase and subsidence temperature inversions (STIs) in the humid phase. In NRTI periods, the rush hour pollution peak is more pronounced in the evening than in the morning and the pollution level is about two times higher at night than in daytime. In STI periods, broad morning and evening traffic peaks are observed and pollution is as high at night as in daytime. The close association between pollution and winter monsoon meteorology found in this study for the winter 2003-04 may serve as a basis for advance warning of WPEs and for forecasting the 24-h pollutant concentrations. - Highlights: {yields} Dozen pollution episodes from Oct. to Feb in Hanoi associated with anticyclones after monsoon surges. {yields} 24-h concentrations of PM{sub 10}, SO{sub 2}, NO{sub 2}, CO rise after surge and decline ahead of the next. {yields} Episodes caused by nighttime radiation and subsidence inversions in dry and humid monsoon phases. {yields} Distinct diurnal variations of pollutant concentrations observed in the two periods. {yields} Close

  2. First record of Eudorylas schreiteri (Shannon) (Diptera: Pipunculidae) as a parasitoid of the corn leafhopper (Hemiptera: Cicadellidae) in Argentina, with a table of pipunculid-host associations in the neo tropical region

    International Nuclear Information System (INIS)

    Virla, Eduardo G.; Rafael, Jose A.

    2009-01-01

    The big-headed fly Eudorylas schreiteri (Shannon) is recorded for the first time as an endoparasitoid of the corn leafhopper Dalbulus maidis (DeLong and Wolcott) in Northern Argentina. A table of known Neotropical pipunculid-host associations is presented. (author)

  3. First record of Eudorylas schreiteri (Shannon) (Diptera: Pipunculidae) as a parasitoid of the corn leafhopper (Hemiptera: Cicadellidae) in Argentina, with a table of pipunculid-host associations in the neo tropical region

    Energy Technology Data Exchange (ETDEWEB)

    Virla, Eduardo G. [PROIMI-Biotecnologia, Tucuman (Argentina). Div. de Control Biologico]. E-mail: evirla@hotmail.com; Moya-Raygoza, Gustavo [Universidad de Guadalajara, Jalisco (Mexico). Centro Universitario de Ciencias Biologicas y Agropecuarias (CUCBA)]. E-mail: gmoya@cucba.udg.mx; Rafael, Jose A. [Instituto Nacional de Pesquisas da Amazonia (INPA), Manaus, AM (Brazil)]. E-mail: jarafael@inpa.gov.br

    2009-01-15

    The big-headed fly Eudorylas schreiteri (Shannon) is recorded for the first time as an endoparasitoid of the corn leafhopper Dalbulus maidis (DeLong and Wolcott) in Northern Argentina. A table of known Neotropical pipunculid-host associations is presented. (author)

  4. The type-material of Arctiinae (Lepidoptera, Erebidae) described by Burmeister and Berg in the collection of the Museo Argentino de Ciencias Naturales Bernardino Rivadavia (Buenos Aires, Argentina).

    Science.gov (United States)

    Beccacece, Hernán M; Vincent, Benoit; Navarro, Fernando R

    2014-01-01

    Carlos G. Burmeister and Carlos Berg were among the most important and influential naturalists and zoologists in Argentina and South America and described 241 species and 34 genera of Lepidoptera. The Museo Argentino de Ciencias Naturales Bernardino Rivadavia (MACN) housed some of the Lepidoptera type specimens of these authors. In this study we present a catalogue with complete information and photographs of 11 Burmeister type specimens and 10 Berg type specimens of Phaegopterina, Arctiina and Pericopina (Lepidoptera, Erebidae, Arctiinae, Arctiini) housed in the MACN. Lectotypes or holotypes were designated where primary type specimens could be recognized; in some cases we were not able to recognize types. The catalogue also proposes nomenclatural changes and new synonymies: Opharus picturata (Burmeister, 1878), comb. n.; Opharus brunnea Gaede, 1923: 7, syn. n.; Hypocrisias jonesi (Schaus, 1894), syn. n.; Leucanopsis infucata (Berg, 1882), stat. rev.; Paracles argentina (Berg, 1877), sp. rev.; Paracles uruguayensis (Berg, 1886), sp. rev.

  5. The type-material of Arctiinae (Lepidoptera, Erebidae) described by Burmeister and Berg in the collection of the Museo Argentino de Ciencias Naturales Bernardino Rivadavia (Buenos Aires, Argentina)

    Science.gov (United States)

    Beccacece, Hernán M.; Vincent, Benoit; Navarro, Fernando R.

    2014-01-01

    Abstract Carlos G. Burmeister and Carlos Berg were among the most important and influential naturalists and zoologists in Argentina and South America and described 241 species and 34 genera of Lepidoptera. The Museo Argentino de Ciencias Naturales Bernardino Rivadavia (MACN) housed some of the Lepidoptera type specimens of these authors. In this study we present a catalogue with complete information and photographs of 11 Burmeister type specimens and 10 Berg type specimens of Phaegopterina, Arctiina and Pericopina (Lepidoptera, Erebidae, Arctiinae, Arctiini) housed in the MACN. Lectotypes or holotypes were designated where primary type specimens could be recognized; in some cases we were not able to recognize types. The catalogue also proposes nomenclatural changes and new synonymies: Opharus picturata (Burmeister, 1878), comb. n.; Opharus brunnea Gaede, 1923: 7, syn. n.; Hypocrisias jonesi (Schaus, 1894), syn. n.; Leucanopsis infucata (Berg, 1882), stat. rev.; Paracles argentina (Berg, 1877), sp. rev.; Paracles uruguayensis (Berg, 1886), sp. rev. PMID:25061380

  6. Diplomat/certified knowledge alternatives in the public scene: an approximation to the quackery from the written press of the cities of Córdoba and Buenos Aires, Argentina in the 1920s

    Directory of Open Access Journals (Sweden)

    María Dolores Rivero

    2017-07-01

    Full Text Available This paper aims to study how the written press of the cities of Córdoba and Buenos Aires (Argentina defined the "continuous advance of quackery and charlatanry" at different times of 1920s. In a context of limited national historiography related to the study of the empirical practices, we want to probe this problem in two different geographic spaces that formed part, —even today— of a country with strong regional inequalities. We wonder how journalistic representations defined "quackery" as a puzzle whose pieces refer to the State, graduate professionals, the society and the empirical healers themselves. In our reconstruction, we recognize that these discourses were influenced by the editorial course and the ideological affiliation to which the newspapers of two of the most important metropolis of Argentina asserted. Based on a qualitative methodology, we put into an analytical perspective a set of news with the aim to rescue "voices and looks" that contributed to build the empirical practices of heal as a social problem of the public sphere during the years of study.

  7. Asociación Thysanoptera (Insecta-Vicia faba (Fabaceae en la Prepuna y Puna de Jujuy, Argentina Thysanoptera (Insecta-Vicia faba (Fabaceae association in Prepuna and Puna in Jujuy, Argentina

    Directory of Open Access Journals (Sweden)

    María Inés Zamar

    2012-03-01

    . occidentalis utilizan la planta en forma temporal y oportunista en Prepuna, mientras que la presencia de F. gemina en Puna es esporádica. Se amplía el número de especies de tisanópteros asociadas al cultivo de haba en ArgentinaThysanoptera (Insecta-Vicia faba (Fabaceae association in Prepuna and Puna in Jujuy, Argentina. The different phenological stages of Vicia faba provide food resources and substrates for the development of a significant diversity of insects. This study aimed to identify the complex of anthophyllous thrips, analyze the species population fluctuations, to obtain some bioecological aspects and the role they play in this association. The study and sampling was conducted during the flowering-fruiting bean crop stages in two phytogeographical regions of Jujuy: Prepuna (2 479m asl on a weekly basis, from October-December 1995-1996 and Puna (3 367m asl every two weeks, from December 2007-March 2008. Each sample consisted of 25 flowers taken at random; only at Prepuna a complementary sampling of three hits per plant (n=10 plants was conducted. Observations were made on oviposition sites, admission to the flower, pupation sites, feeding behavior and injuries caused. In Prepuna, the Thysanoptera complex consisted of Frankliniella australis, F. occidentalis, F. gemina, F. schultzei and Thrips tabaci; in Puna, the specific diversity was restricted to F. australis and F. gemina. Although the planting-harvest period in both areas did not match, the fluctuations in populations showed the same pattern: as flowering progressed, the number of thrips coincided with the availability of food resources. In both areas, F. australis was the dominant species and maintained successive populations; it layed eggs in flower buds, and larvae hatched when flowers opened; feeding larvae and adults brought about silvery stains with black spots. In Prepuna, F. australis went through the mobile immature stages on flowers, while quiescent stages were on the ground; in the Puna, all

  8. From 1962 the teaching of Methodology of Radioisotopes is continuous in the University of Buenos Aires of the Argentine Republic; Desde 1962 la ensenanza de Metodologia de Radioisotopos es continua en la Universidad de Buenos Aires de la Republica Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Rivera, E; Cremaschi, G; Martin, G; Zubillaga, M; Cricco, G; Davio, C; Genaro, A; Bianchin, A; Mohamad, N; Klecha, A; Calmanovici, G; Goldman, G; Salgueiro, J; Nunez, M; Medina, V; Gutierrez, A; Leonardi, N; Bergoc, R [Laboratorio de Radioisotopos, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Junin 956, 1113- Buenos Aires (Argentina)

    2006-07-01

    In the Faculty of Pharmacy and Biochemistry of the University of Buenos Aires the teaching of the radioisotopes began in 1960 and uninterruptedly continuous. The application of the radioisotopes and the radiations in different professional activities it is acceptable only in a context of radiological safety and with personal appropriately trained. Conscious of it, the training in grade, postgraduate and technicature, has more of 40% of the thematic one guided to the formation in radiological protection. The courses dictated at the moment in the Laboratory of Radioisotopes they include: Grade formation: to) Subject grade 'Methodology of Radioisotopes' in the Career of Biochemistry: it began to be dictated in 1960 and until the present, more of 6500 students they have gone by our classrooms. b) Grade subject 'Radiopharmacy' in the Career of Pharmacy: guided to the formation of a modern pharmacist, with necessary knowledge to be developed as professional in the Radiopharmaceutical area. Postgraduate formation: c) Postgraduate course of Methodology of Radioisotopes specially directed to biochemical, biologists, veterinarians, chemical. It is dictated uninterruptedly from 1962. d) Postgraduate course in Methodology of Radioisotopes for medical professionals, specially directed to professionals of the medicine that want to specialize in different branches of the Nuclear Medicine. Both courses have 220 present hours and it stops their approval the assistants they should surrender a final exam at open book that consists on the resolution of a practical exercise adapted to their professional practices. Until the present they have surrendered their exams satisfactorily approximately 2000 professionals coming from different areas of the Argentina and of several countries of Hispanic speech. e) Starting from 1992 the Course of Upgrade in Methodology of Radioisotopes directed to professionals that want to upgrade its knowledge in new radioisotopic methodologies is dictated

  9. From 1962 the teaching of Methodology of Radioisotopes is continuous in the University of Buenos Aires of the Argentine Republic; Desde 1962 la ensenanza de Metodologia de Radioisotopos es continua en la Universidad de Buenos Aires de la Republica Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Rivera, E.; Cremaschi, G.; Martin, G.; Zubillaga, M.; Cricco, G.; Davio, C.; Genaro, A.; Bianchin, A.; Mohamad, N.; Klecha, A.; Calmanovici, G.; Goldman, G.; Salgueiro, J.; Nunez, M.; Medina, V.; Gutierrez, A.; Leonardi, N.; Bergoc, R. [Laboratorio de Radioisotopos, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Junin 956, 1113- Buenos Aires (Argentina)]. e-mail: rmbergoc@arnet.com.ar

    2006-07-01

    In the Faculty of Pharmacy and Biochemistry of the University of Buenos Aires the teaching of the radioisotopes began in 1960 and uninterruptedly continuous. The application of the radioisotopes and the radiations in different professional activities it is acceptable only in a context of radiological safety and with personal appropriately trained. Conscious of it, the training in grade, postgraduate and technicature, has more of 40% of the thematic one guided to the formation in radiological protection. The courses dictated at the moment in the Laboratory of Radioisotopes they include: Grade formation: to) Subject grade 'Methodology of Radioisotopes' in the Career of Biochemistry: it began to be dictated in 1960 and until the present, more of 6500 students they have gone by our classrooms. b) Grade subject 'Radiopharmacy' in the Career of Pharmacy: guided to the formation of a modern pharmacist, with necessary knowledge to be developed as professional in the Radiopharmaceutical area. Postgraduate formation: c) Postgraduate course of Methodology of Radioisotopes specially directed to biochemical, biologists, veterinarians, chemical. It is dictated uninterruptedly from 1962. d) Postgraduate course in Methodology of Radioisotopes for medical professionals, specially directed to professionals of the medicine that want to specialize in different branches of the Nuclear Medicine. Both courses have 220 present hours and it stops their approval the assistants they should surrender a final exam at open book that consists on the resolution of a practical exercise adapted to their professional practices. Until the present they have surrendered their exams satisfactorily approximately 2000 professionals coming from different areas of the Argentina and of several countries of Hispanic speech. e) Starting from 1992 the Course of Upgrade in Methodology of Radioisotopes directed to professionals that want to upgrade its knowledge in new radioisotopic

  10. Ecología urbana de Triatoma infestans en Argentina: asociación entre Triatoma infestans y palomares Triatoma infestans urban ecology in Argentina: association between Triatoma infestans and pigeon cotes

    Directory of Open Access Journals (Sweden)

    Silvana L. Vallvé

    1995-06-01

    tinha coletado o T. infestans. O perfil alimentar dos triatomas mostra predomínio de sangue de aves; nos edifícios e na adega 95% dos T. infestans analisados alimentaram-se somente de aves; os demais fizeram repastos simples ou mistos em humanos, cães ou gatos. Nenhum T. infestans apresentou infecção com Trypanosoma cruzi.A study was undertaken in an urban area of the capital city of the province of San Juan, Argentina, in a housing complex of 768 flats distributed in buildings of 3 and 7 floors each surrouding an abandoned central winery. A total of 329 Triatoma infestans were captured, 293 on 4 terraces of seven-floor-towers and 36 inside the winery, associated with the great number of pigeons which nest in those places. The bugs were sheltered in the dung accumulated between the cement blocks used to floor the terraces and inside the unused tuns in the winery. Two main bug foci were identified associated with the dense pigeon colonies: 81,5% of the T. infestans collected were found in one of the towers (4B and 11% in the central winery. After six months of insecticidal sprayind of the infested areas, those terraces in wich T. infestans had not been previously found resulted gave positive results. The feeding profile of triatomines shows a predominance of simple bird blood meals; in the buildings and the winery 95% of the T. infestans analized were identified for bird blood meals; the rest had fed on one or more sources: human, dogs or cats. None of the T. infestans was infected by T. cruzi.

  11. Levels of glyphosate in surface waters, sediments and soils associated with direct sowing soybean cultivation in north pampasic region of Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Peruzzo, Pablo J. [Grupo Materiales Polimericos, INIFTA - Instituto de Investigaciones Fisicoquimicas Teoricas y Aplicadas (UNLP-CONICET), Diag. 113 y 64, CC 16 Suc 4, 1900 La Plata (Argentina); Porta, Atilio A. [CIMA - Centro de Investigaciones del Medio Ambiente, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115, 1900 La Plata (Argentina); Division Quimica Analitica, Departamento de Quimica, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115, 1900 La Plata (Argentina)], E-mail: aporta@quimica.unlp.edu.ar; Ronco, Alicia E. [CIMA - Centro de Investigaciones del Medio Ambiente, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115, 1900 La Plata (Argentina)

    2008-11-15

    Levels of glyphosate were determined in water, soil and sediment samples from a transgenic soybean cultivation area located near to tributaries streams of the Pergamino-Arrecifes system in the north of the Province of Buenos Aires, Argentina. Field work took into account both the pesticide application and the rains occurring after applications. The pesticide was analysed by HPLC-UV detection, previous derivatization with 9-fluorenylmethylchloroformate (FMOC-Cl). In addition, SoilFug multimedia model was used to analyse the environmental distribution of the pesticides. In the field, levels of glyphosate in waters ranged from 0.10 to 0.70 mg/L, while in sediments and soils values were between 0.5 and 5.0 mg/Kg. Temporal variation of glyphosate levels depended directly on the time of application and the rain events. The results obtained from the application of the model are in accordance with the values found in the field. - Glyphosate concentrations in the environment from a region where little information exists about this and intensive cultivation activities predominate in large areas.

  12. Levels of glyphosate in surface waters, sediments and soils associated with direct sowing soybean cultivation in north pampasic region of Argentina

    International Nuclear Information System (INIS)

    Peruzzo, Pablo J.; Porta, Atilio A.; Ronco, Alicia E.

    2008-01-01

    Levels of glyphosate were determined in water, soil and sediment samples from a transgenic soybean cultivation area located near to tributaries streams of the Pergamino-Arrecifes system in the north of the Province of Buenos Aires, Argentina. Field work took into account both the pesticide application and the rains occurring after applications. The pesticide was analysed by HPLC-UV detection, previous derivatization with 9-fluorenylmethylchloroformate (FMOC-Cl). In addition, SoilFug multimedia model was used to analyse the environmental distribution of the pesticides. In the field, levels of glyphosate in waters ranged from 0.10 to 0.70 mg/L, while in sediments and soils values were between 0.5 and 5.0 mg/Kg. Temporal variation of glyphosate levels depended directly on the time of application and the rain events. The results obtained from the application of the model are in accordance with the values found in the field. - Glyphosate concentrations in the environment from a region where little information exists about this and intensive cultivation activities predominate in large areas

  13. Políticas de desarrollo territorial en áreas turísticas y del conurbano bonaerense durante el peronismo en la Gobernación mercante (Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Carlos Jerónimo Mazza

    2012-10-01

    Full Text Available Se analizan aquí algunas de las políticas públicas vinculadas con la organización del territorio de la provincia de Buenos Aires (Argentina durante la gobernación de Domingo Mercante, procurando establecer en qué consistieron, cuáles fueron sus objetivos y cómo se articularon con el saber disciplinar del planeamiento regional. Se parte del supuesto de que en este momento se hace necesario un cambio en la dimensión técnica de la burocracia pública, para dar respuesta, fundamentalmente, a los problemas territoriales. Como consecuencia tiene lugar una nueva concepción en el tratamiento de la ordenación del territorio, con la incorporación del paradigma del planeamiento regional. Palabras claves: políticas públicas - gobernación Mercante – planeamiento regional – historia territorial – territorio turístico______________________Abstract:We analyze here some of the public policies related to the organization of territory in the province of Buenos Aires (Argentina during Domingo Mercante’s government, trying to establish what they consisted of, which its objectives were and how they were articulated with the disciplinary knowledge of regional planning. We start from the base that a change in the technical dimension of public bureaucracy is needed at this moment, to give an answer, fundamentally, to the territorial problems. As a consequence, a new conception in the treatment of the disposition of territory takes place, along with the incorporation of the paradigm of regional planning.Keywods: Public policies - Mercante’s government – regional planning – territorial history – touristic territory

  14. Science and education between Spain and Argentina, 1910-1940. The university chairs of Buenos Aires «Institución Cultural Española» Las cátedras de la «institución cultural española» de buenos aires. Ciencia y educación entre España y Argentina, 1910-1940

    Directory of Open Access Journals (Sweden)

    Rosario E. FERNÁNDEZ TERÁN

    2011-07-01

    Full Text Available During the first decades of the twentieth century Spain experienced its most significant period of educational, cultural and scientific encounter with Europe in all its history. The new approaches and reforms, initially advanced by García Alix in 1900 and accomplished by the Junta para Ampliación de Estudios from 1907, became the model for many Latin-American countries. In particular, the celebration in 1910 of the centenary of the declaration of independence in Argentina became the origin for a very special initiative that rejoined Spanish immigrants and their descendants with the country of their ancestors, which by that time had learned how to overcome several decades of decline looking for Europe: the Institución Cultural Española at Buenos Aires. The ICE, through the JAE, established and supported two successive university chairs. In Buenos Aires, since 1914, the most important Spanish University Professors sat at the «Cátedra de Cultura Española» alternating Humanities and the Sciences. In Madrid, from 1928, some European authorities joined Spanish scientists at the «Cátedra Cajal de Investigaciones Científicas». These initiatives, which showed the splendour of what is being known as Spanish Silver Age, suffered a dramatic rupture with the outbreak of the Civil War. After 1939, a new Institución Cultural Española had to adapt itself to the new Spain, a very different country from the one they had met during the fist third of the twentieth century, while the Junta para Ampliación de Estudios was reincarnated as Consejo Superior de Investigaciones Científicas.Durante las primeras décadas del siglo XX España vivió la etapa de convergencia educativa, cultural y científica con Europa más singular de toda su historia, a través de novedades y reformas que, esbozadas en la normativa ministerial por García Alix en 1900, y culminadas con apuestas como la de la Junta para Ampliación de Estudios a partir de 1907, se

  15. An Association Between Air Quality and COPD in Ahvaz, Iran

    Directory of Open Access Journals (Sweden)

    Mohammadi

    2015-01-01

    Full Text Available Context Ahvaz, capital city of Khuzestan province, with a population of more than 1 million people is very famous in standpoint of air pollution. Nitrogen dioxide is emitted from vehicles and industries which can have short and long term effects on citizens. Evidence Acquisition Data were taken from Ahvaz Department of Environment (ADoE. Stations were Naderi, Behdasht Ghadim, Havashenasi, and Mohitzist. The COPD attributed to nitrogen dioxide in Ahvaz city, Iran, in 2011 were calculated by utilizing relative risk and baseline incidence related to health end point nitrogen dioxide. Data were analyzed by SPSS ver 16. Results The highest and lowest annually average nitrogen dioxide concentrations during 2011 were 70 and 21 μg/m3, respectively. The Bureau of Meteorology “Havashenasi” and head office of ADoE “Mohitzist” had the highest and the lowest nitrogen dioxide concentrations during 2011, respectively. Approximately 4% of the hospital admission for COPD happened when the nitrogen dioxide concentration was > 10 μg/m3. Low percentage of the observed health endpoints was associated with low concentration of measured nitrogen dioxide. Conclusions Using alternative energy sources, such as solar cooking and electrical heating is effective, as is using fuels such as kerosene or coal rather than biomass. Higher relative risk value can depict mismanagement in urban air quality. The lower level of relative risk value may be achieved if some control strategies for reducing nitrogen dioxide emission are used.

  16. Autonomía educativa en la provincia de Buenos Aires, Argentina: comparación entre dos distritos escolares. Una perspectiva neo-institucionalista

    OpenAIRE

    Astiz, M. Fernanda

    2015-01-01

    RESUMEN : El presente artículo aporta evidencia empírica sobre políticas adoptadas, resultados y consecuencias de las iniciativas de descentralización y autonomía educativa implementadas en Argentina en los años noventa. Este estudio realiza una evaluación de las implicancias del concepto de autonomía educativa en el país y de cómo fue adoptado tanto a nivel provincial como en las escuelas. Utilizando un paradigma neo-institucionalista, y mediante el uso de fuentes de información fidedignas d...

  17. La regulación económica en las concesiones de agua potable y desagües cloacales en Buenos Aires y Corrientes, Argentina

    OpenAIRE

    Daniel Artana; Fernando Navajas; Santiago Urbiztondo

    1997-01-01

    En Argentina, como en la mayoría de los países del mundo, el sector sanitario ha sido tradicionalmente manejado por empresas públicas. Sin embargo, la corriente privatizadora de los últimos 10 años ha alcanzado a este sector lo cual la obliga a compatibilizar las ventajas de la provisión privada y las demandas sociales que caracterizan a los servicios públicos. La literatura especializada identifica como factores determinantes de la obtención de dichas ventajas, al diseño de la estructura y n...

  18. The IL-17A rs2275913 single nucleotide polymorphism is associated with protection to tuberculosis but related to higher disease severity in Argentina

    Science.gov (United States)

    Rolandelli, A.; Hernández Del Pino, R. E.; Pellegrini, J. M.; Tateosian, N. L.; Amiano, N. O.; de la Barrera, S.; Casco, N.; Gutiérrez, M.; Palmero, D. J.; García, V. E.

    2017-01-01

    Mycobacterium tuberculosis (Mtb) causes nearly 10 millions of new tuberculosis disease cases annually. However, most individuals exposed to Mtb do not develop tuberculosis, suggesting the influence of a human genetic component. Here, we investigated the association of the rs2275913 SNP (G → A) from IL-17A and tuberculosis in Argentina by a case-control study. Furthermore, we evaluated in vitro the functional relevance of this SNP during the immune response of the host against Mtb and analyzed its impact on clinical parameters of the disease. We found an association between the AA genotype and tuberculosis resistance. Additionally, within the healthy donors population, AA cells stimulated with a Mtb lysate (Mtb-Ag) produced the highest amounts of IL-17A and IFN-γ, which further support the genetic evidence found. In contrast, within the tuberculosis patients population, AA Mtb-Ag stimulated cells showed the lowest immunological parameters and we evidenced an association between the AA genotype and clinical parameters of disease severity, such as severe radiological lesions and higher bacilli burden in sputum. Overall, our findings demonstrated that the AA genotype from the IL-17A rs2275913 SNP is positively associated with protection to active tuberculosis but related to higher disease severity in the Argentinean population. PMID:28098168

  19. Reducing indoor air pollution by air conditioning is associated with improvements in cardiovascular health among the general population.

    Science.gov (United States)

    Lin, Lian-Yu; Chuang, Hsiao-Chi; Liu, I-Jung; Chen, Hua-Wei; Chuang, Kai-Jen

    2013-10-01

    Indoor air pollution is associated with cardiovascular effects, however, little is known about the effects of improving indoor air quality on cardiovascular health. The aim of this study was to explore whether improving indoor air quality through air conditioning can improve cardiovascular health in human subjects. We recruited a panel of 300 healthy subjects from Taipei, aged 20 and over, to participate in six home visits each, to measure a variety of cardiovascular endpoints, including high sensitivity-C-reactive protein (hs-CRP), 8-hydroxy-2'-deoxyguanosine (8-OHdG), fibrinogen in plasma and heart rate variability (HRV). Indoor particles and total volatile organic compounds (VOCs) were measured simultaneously at the participant's home during each visit. Three exposure conditions were investigated in this study: participants were requested to keep their windows open during the first two visits, close their windows during the next two visits, and close the windows and turn on their air conditioners during the last two visits. We used linear mixed-effects models to associate the cardiovascular endpoints with individual indoor air pollutants. The results showed that increases in hs-CRP, 8-OHdG and fibrinogen, and decreases in HRV indices were associated with increased levels of indoor particles and total VOCs in single-pollutant and two-pollutant models. The effects of indoor particles and total VOCs on cardiovascular endpoints were greatest during visits with the windows open. During visits with the air conditioners turned on, no significant changes in cardiovascular endpoints were observed. In conclusion, indoor air pollution is associated with inflammation, oxidative stress, blood coagulation and autonomic dysfunction. Reductions in indoor air pollution and subsequent improvements in cardiovascular health can be achieved by closing windows and turning on air conditioners at home. Copyright © 2013 Elsevier B.V. All rights reserved.

  20. HIV type-1 genotypic resistance profiles in vertically infected patients from Argentina reveal an association between K103N+L100I and L74V mutations.

    Science.gov (United States)

    Aulicino, Paula C; Rocco, Carlos A; Mecikovsky, Debora; Bologna, Rosa; Mangano, Andrea; Sen, Luisa

    2010-01-01

    Patterns and pathways of HIV type-1 (HIV-1) antiretroviral (ARV) drug resistance-associated mutations in clinical isolates are conditioned by ARV history and factors such as viral subtype and fitness. Our aim was to analyse the frequency and association of ARV drug resistance mutations in a group of long-term vertically infected patients from Argentina. Plasma samples from 71 patients (38 children and 33 adolescents) were collected for genotypic HIV-1 ARV resistance testing during the period between February 2006 and October 2008. Statistically significant pairwise associations between ARV resistance mutations in pol, as well as associations between mutations and drug exposure, were identified using Fisher's exact tests with Bonferroni and false discovery rate corrections. Phylogenetic analyses were performed for subtype assignment. In protease (PR), resistance-associated mutations M46I/L, I54M/L/V/A/S and V82A/F/T/S/M/I were associated with each other and with minor mutations at codons 10, 24 and 71. Mutations V82A/F/T/S/M/I were primarily selected by the administration of ritonavir (RTV) in an historical ARV regimen. In reverse transcriptase, thymidine analogue mutation (TAM)1 profile was more common than TAM2. The non-nucleoside K103N+L100I mutations were observed at high frequency (15.5%) and were significantly associated with the nucleoside mutation L74V in BF recombinants. Associations of mutations at PR sites reflect the frequent use of RTV at an early time in this group of patients and convergent resistance mechanisms driven by the high exposure to protease inhibitors, as well as local HIV-1 diversity. The results provide clinical evidence of a molecular interaction between K103N+L100I and L74V mutations at the reverse transcriptase gene in vivo, limiting the future use of second-generation non-nucleoside reverse transcriptase inhibitors such as etravirine.

  1. [Extrinsic and intrinsic factors associated with mycotoxigenic fungi populations of maize grains (Zea mays L.) stored in silobags in Argentina].

    Science.gov (United States)

    Castellari, Claudia C; Cendoya, María G; Marcos Valle, Facundo J; Barrera, Viviana; Pacin, Ana M

    2015-01-01

    In order to determine the behavior of mycotoxin-producing fungal populations linked with silobags stored corn grains with a moisture content greater at the recommended as safe, 270 samples taken in three times (beginning, 90 days, final) over a five month period of storage were evaluated. The fungal biota was quantified and identified and the contamination with fumonisin and aflatoxin was determined. Extrinsic factors (environment), intrinsic factors (grains) and technological factors (location of the grains in the profile of silobag) were taken into account to evaluate the presence and quantity of total and mycotoxigenic fungal populations. The pH of grains and O2 levels were significantly reduced after five months, while CO2 concentration increased in the same period. The total counts of mycobiota were significantly higher in grains located in the top layer of silobag. Mycotoxigenic species of Fusarium, Aspergillus, Penicillium and Eurotium were identified. The frequency of isolation of Fusarium verticillioides decreased at the end of storage and Aspergillus flavus was isolated only at the beginning of storage. The counts of the Penicillium spp. and Eurotium spp. were increased at the end of storage. Fumonisin contamination was found in all the samples (100%) with maximum levels of 5.707mg/kg whereas aflatoxin contaminated only 40% with maximum levels of 0.0008mg/kg. The environmental and substrate conditions generated during the storage limited the development of mycotoxigenic fungi and mycotoxin production. Copyright © 2015 Asociación Argentina de Microbiología. Publicado por Elsevier España, S.L.U. All rights reserved.

  2. Constraints and changes in the development of science and technology policies in Argentina's University of Buenos Aires and the National Autonomous University of Mexico

    Science.gov (United States)

    Alcantara, Armando

    1999-06-01

    This dissertation is a comparison of the effects of structural adjustment on scientific and technological policies in two of the largest and most important universities of Latin America, UBA and UNAM. In its broadest sense, scientific and technological policies encompass a set of interventions, decisions, and activities of different institutions within a given society aimed to hinder or stimulate the progress of scientific research, and the application of its products to socioeconomic, political, cultural or military objectives. The methodological approach for this dissertation aimed to combine data collected at both the macro and micro levels. First, a profound examination of different bibliographical sources such as books, articles, and documents of different kinds (policy papers, national plans, and working papers), was carried out. Secondly, a series of interviews were conducted with scientists in some of the natural sciences' research centers and institutes, academic administrators and top officials of the S&T government agencies, in Argentina and Mexico, The main goal of these interviews was to understand the institutional dynamics as it was shaped by actors and processes, outside and within the two universities. This study found that the structural adjustment process in Argentina and Mexico has negatively affected the S&T policies in both UBA and UNAM. Local S&T played a original role in the two universities under scrutiny. Investments in science and technology have remained significantly low in Argentina and Mexico. In addition to this, the small amount of scientific personnel, the predominantly public characteristic of S&T funds, and the reduced number of doctoral graduates resulted in low levels of scientific output as compared with the number of publications in international scientific literature. A predominant academic orientation with few contributions to societal needs, either related to the productive sectors or to social problems such as pollution

  3. 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

  4. Brain responses associated with consciousness of breathlessness (air hunger)

    OpenAIRE

    Liotti, Mario; Brannan, Stephen; Egan, Gary; Shade, Robert; Madden, Lisa; Abplanalp, Bart; Robillard, Rachel; Lancaster, Jack; Zamarripa, Frank E.; Fox, Peter T.; Denton, Derek

    2001-01-01

    Little is known about the physiological mechanisms subserving the experience of air hunger and the affective control of breathing in humans. Acute hunger for air after inhalation of CO2 was studied in nine healthy volunteers with positron emission tomography. Subjective breathlessness was manipulated while end-tidal CO2- was held constant. Subjects experienced a significantly greater sense of air hunger breathing through a face mask than through a mouthpiece. The s...

  5. Heterogeneous vancomycin-intermediate susceptibility in a community-associated methicillin-resistant Staphylococcus aureus epidemic clone, in a case of Infective Endocarditis in Argentina

    Directory of Open Access Journals (Sweden)

    Vindel Ana

    2011-04-01

    Full Text Available Abstract Background Community-Associated Methicillin Resistant Staphylococcus aureus (CA-MRSA has traditionally been related to skin and soft tissue infections in healthy young patients. However, it has now emerged as responsible for severe infections worldwide, for which vancomycin is one of the mainstays of treatment. Infective endocarditis (IE due to CA-MRSA with heterogeneous vancomycin-intermediate susceptibility-(h-VISA has been recently reported, associated to an epidemic USA 300 CA-MRSA clone. Case Presentation We describe the occurrence of h-VISA phenotype in a case of IE caused by a strain belonging to an epidemic CA-MRSA clone, distinct from USA300, for the first time in Argentina. The isolate h-VISA (SaB2 was recovered from a patient with persistent bacteraemia after a 7-day therapy with vancomycin, which evolved to fatal case of IE complicated with brain abscesses. The initial isolate-(SaB1 was fully vancomycin susceptible (VSSA. Although MRSA SaB2 was vancomycin susceptible (≤2 μg/ml by MIC (agar and broth dilution, E-test and VITEK 2, a slight increase of MIC values between SaB1 and SaB2 isolates was detected by the four MIC methods, particularly for teicoplanin. Moreover, Sab2 was classified as h-VISA by three different screening methods [MHA5T-screening agar, Macromethod-E-test-(MET and by GRD E-test] and confirmed by population analysis profile-(PAP. In addition, a significant increase in cell-wall thickness was revealed for SaB2 by electron microscopy. Molecular typing showed that both strains, SaB1 and SaB2, belonged to ST5 lineage, carried SCCmecIV, lacked Panton-Valentine leukocidin-(PVL genes and had indistinguishable PFGE patterns (subtype I2, thereby confirming their isogenic nature. In addition, they were clonally related to the epidemic CA-MRSA clone (pulsotype I detected in our country. Conclusions This report demonstrates the ability of this epidemic CA-MRSA clone, disseminated in some regions of Argentina, to

  6. Pneumatosis cystoides intestinalis associated with massive free air mimicking perforated diffuse peritonitis

    OpenAIRE

    Sakurai, Yoichi; Hikichi, Masahiro; Isogaki, Jun; Furuta, Shinpei; Sunagawa, Risaburo; Inaba, Kazuki; Komori, Yoshiyuki; Uyama, Ichiro

    2008-01-01

    While pneumatosis cystoides intestinalis (PCI) is a rare disease entity associated with a wide variety of gastrointestinal and non-gastrointestinal disorders, PCI associated with massive intra- and retroperitoneal free air is extremely uncommon, and is difficult to diagnose differentially from perforated peritonitis. We present two cases of PCI associated with massive peritoneal free air and/or retroperitoneal air that mimicked perforated peritonitis. These cases highlight the clinical import...

  7. 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.

  8. 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.)

  9. Streamer properties and associated x-rays in perturbed air

    Science.gov (United States)

    Köhn, C.; Chanrion, O.; Babich, L. P.; Neubert, T.

    2018-01-01

    Streamers are ionization waves in electric discharges. One of the key ingredients of streamer propagation is an ambient gas that serves as a source of free electrons. Here, we explore the dependence of streamer dynamics on different spatial distributions of ambient air molecules. We vary the spatial profile of air parallel and perpendicular to the ambient electric field. We consider local sinusoidal perturbations of 5%-100%, as induced from discharge shock waves. We use a cylindrically symmetric particle-in-cell code to simulate the evolution of bidirectional streamers and compare the electron density, electric field, streamer velocity and electron energy of streamers in uniform air and in perturbed air. In all considered cases, the motion is driven along in decreasing air density and damped along increasing air density. Perturbations of at most 5%-10% change the velocity differences by up to approximately 40%. Perturbations perpendicular to the electric field additionally squeeze or branch streamers. Air variations can thus partly explain the difference of velocities and morphologies of streamer discharges. In cases with large perturbations, electrons gain energies of up to 30 keV compared to 100 eV in uniformly distributed air. For such perturbations parallel to the ambient electric field, we see the spontaneous initiation of a negative streamer; for perpendicular perturbations, x-rays with energies of up to 20 keV are emitted within 0.17 ns.

  10. Health effects associated with exposure to ambient air pollution.

    Science.gov (United States)

    Samet, Jonathan; Krewski, Daniel

    2007-02-01

    The World Health Organization has identified ambient air pollution as a high public health priority, based on estimates of air pollution related death and disability-adjusted life years derived in its Global Burden of Disease initiative. The NERAM Colloquium Series on Health and Air Quality was initiated to strengthen the linkage between scientists, policymakers, and other stakeholders by reviewing the current state of science, identifying policy-relevant gaps and uncertainties in the scientific evidence, and proposing a path forward for research and policy to improve air quality and public health. The objective of this paper is to review the current state of science addressing the impacts of air pollution on human health. The paper is one of four background papers prepared for the 2003 NERAM/AirNet Conference on Strategies for Clean Air and Health, the third meeting in the international Colloquium Series. The review is based on the framework and findings of the U.S. National Research Committee (NRC) on Research Priorities for Airborne Particulate Matter and addresses key questions underlying air quality risk management policy decisions.

  11. Place-based stressors associated with industry and air pollution

    Science.gov (United States)

    Michelle C. Kondo; Carol Ann Gross-Davis; Katlyn May; Lauren O. Davis; Tyiesha Johnson; Mable Mallard; Alice Gabbadon; Claudia Sherrod; Charles C. Branas

    2014-01-01

    Exposure to air pollution and its sources is increasingly viewed as a psychosocial stress, however its nature is not understood. This article explores the role of the concept of place on risk perception and community stress within data collected from eight focus groups in Philadelphia, USA. Discussions focused on air pollution, a nearby oil refinery, health, and a...

  12. Heterogeneity in genetic admixture across different regions of Argentina.

    Directory of Open Access Journals (Sweden)

    Sergio Avena

    Full Text Available The population of Argentina is the result of the intermixing between several groups, including Indigenous American, European and African populations. Despite the commonly held idea that the population of Argentina is of mostly European origin, multiple studies have shown that this process of admixture had an impact in the entire Argentine population. In the present study we characterized the distribution of Indigenous American, European and African ancestry among individuals from different regions of Argentina and evaluated the level of discrepancy between self-reported grandparental origin and genetic ancestry estimates. A set of 99 autosomal ancestry informative markers (AIMs was genotyped in a sample of 441 Argentine individuals to estimate genetic ancestry. We used non-parametric tests to evaluate statistical significance. The average ancestry for the Argentine sample overall was 65% European (95%CI: 63-68%, 31% Indigenous American (28-33% and 4% African (3-4%. We observed statistically significant differences in European ancestry across Argentine regions [Buenos Aires province (BA 76%, 95%CI: 73-79%; Northeast (NEA 54%, 95%CI: 49-58%; Northwest (NWA 33%, 95%CI: 21-41%; South 54%, 95%CI: 49-59%; p<0.0001] as well as between the capital and immediate suburbs of Buenos Aires city compared to more distant suburbs [80% (95%CI: 75-86% versus 68% (95%CI: 58-77%, p = 0.01]. European ancestry among individuals that declared all grandparents born in Europe was 91% (95%CI: 88-94% compared to 54% (95%CI: 51-57% among those with no European grandparents (p<0.001. Our results demonstrate the range of variation in genetic ancestry among Argentine individuals from different regions in the country, highlighting the importance of taking this variation into account in genetic association and admixture mapping studies in this population.

  13. Heterogeneity in Genetic Admixture across Different Regions of Argentina

    Science.gov (United States)

    Avena, Sergio; Via, Marc; Ziv, Elad; Pérez-Stable, Eliseo J.; Gignoux, Christopher R.; Dejean, Cristina; Huntsman, Scott; Torres-Mejía, Gabriela; Dutil, Julie; Matta, Jaime L.; Beckman, Kenneth; Burchard, Esteban González; Parolin, María Laura; Goicoechea, Alicia; Acreche, Noemí; Boquet, Mariel; Ríos Part, María Del Carmen; Fernández, Vanesa; Rey, Jorge; Stern, Mariana C.; Carnese, Raúl F.; Fejerman, Laura

    2012-01-01

    The population of Argentina is the result of the intermixing between several groups, including Indigenous American, European and African populations. Despite the commonly held idea that the population of Argentina is of mostly European origin, multiple studies have shown that this process of admixture had an impact in the entire Argentine population. In the present study we characterized the distribution of Indigenous American, European and African ancestry among individuals from different regions of Argentina and evaluated the level of discrepancy between self-reported grandparental origin and genetic ancestry estimates. A set of 99 autosomal ancestry informative markers (AIMs) was genotyped in a sample of 441 Argentine individuals to estimate genetic ancestry. We used non-parametric tests to evaluate statistical significance. The average ancestry for the Argentine sample overall was 65% European (95%CI: 63–68%), 31% Indigenous American (28–33%) and 4% African (3–4%). We observed statistically significant differences in European ancestry across Argentine regions [Buenos Aires province (BA) 76%, 95%CI: 73–79%; Northeast (NEA) 54%, 95%CI: 49–58%; Northwest (NWA) 33%, 95%CI: 21–41%; South 54%, 95%CI: 49–59%; pcapital and immediate suburbs of Buenos Aires city compared to more distant suburbs [80% (95%CI: 75–86%) versus 68% (95%CI: 58–77%), p = 0.01]. European ancestry among individuals that declared all grandparents born in Europe was 91% (95%CI: 88–94%) compared to 54% (95%CI: 51–57%) among those with no European grandparents (p<0.001). Our results demonstrate the range of variation in genetic ancestry among Argentine individuals from different regions in the country, highlighting the importance of taking this variation into account in genetic association and admixture mapping studies in this population. PMID:22506044

  14. [A study concerning how much weight schoolchildren carry in their bags, involving four schools in the metropolitan area of Buenos Aires, Argentina].

    Science.gov (United States)

    Laíño, Fernando A; Santa María, Claudio J; Bazán, Nelio E; Mainero, Daniel D

    2013-01-01

    Determining the weight children carry in their bags to school (absolute and relative values) and the distance walked during home-school routes, involving students from four schools in the metropolitan area of Buenos Aires. The study involved 751 primary (4th to 6th grades) and secondary (1st to 3rd years) level students who were attending three private schools and one public one. Body and bag weights were measured and the children were asked about the distance (in blocks) they walked from school to home. The study involved a descriptive analysis and contrasted the students by gender, educational level, type of school and grade or year. Possible associations between variables were ascertained. The group was divided into those carrying bags weighing less than 10% of their body weight and those who carrying 10% (considered a critical value) and more; frequencies were calculated by the type of bag being used. 68% of the sample were carrying 10% or more of their body weight (P42=10.13%): 66% in male (P44=10.12%) and 60% in female children (P40=10.2%). Private school students carried more weight than public school children (p<0.05) and younger students carried a greater weight than older students (p<0.05) in both educational levels. Most children were carrying relative weights well above that recommended and female students were most affected. Younger students carried higher absolute and relative weights.

  15. High abundance and diversity of consumers associated with eutrophic areas in a semi-desert macrotidal coastal ecosystem in Patagonia, Argentina

    Science.gov (United States)

    Martinetto, Paulina; Daleo, Pedro; Escapa, Mauricio; Alberti, Juan; Isacch, Juan Pablo; Fanjul, Eugenia; Botto, Florencia; Piriz, Maria Luz; Ponce, Gabriela; Casas, Graciela; Iribarne, Oscar

    2010-07-01

    Here we evaluated the response to eutrophication in terms of abundance and diversity of flora and fauna in a semi-desert macrotidal coastal system (San Antonio bay, Patagonia, Argentina, 40° 48' S) where signs of eutrophication (high nutrient concentration, seaweed blooms, high growth rate of macroalgae) have been reported. We compared abundances and species composition of macroalgae, small infaunal and epifaunal invertebrates, and birds associated with tidal channels of the San Antonio Bay subject to contrasting anthropogenic influence. Macroalgae were more abundant and diverse in the channel closer to human activity where nutrient concentrations were also higher. In contrast to what others have observed in eutrophic sites, small invertebrates and birds were also more abundant and diverse in the channel with macroalgal blooms and high nutrient concentration. The large water flushing during the tidal cycle could prevent anoxic or hypoxic events, making the environment suitable for consumers. Thus, this could be a case in which eutrophication supports high densities of consumers by increasing food availability, rather than negatively affecting the survival of organisms.

  16. Long-term variability of heat waves in Argentina and recurrence probability of the severe 2008 heat wave in Buenos Aires

    Czech Academy of Sciences Publication Activity Database

    Rusticucci, M.; Kyselý, Jan; Almeira, G.; Lhotka, Ondřej

    2016-01-01

    Roč. 124, 3-4 (2016), s. 679-689 ISSN 0177-798X Institutional support: RVO:67179843 Keywords : atmospheric science * climatology * atmospheric protection * air quality control * air pollution * water waste technology * water pollution control * water management * aquatic pollution Subject RIV: DG - Athmosphere Sciences, Meteorology Impact factor: 2.640, year: 2016

  17. Associations between lifestyle and air pollution exposure: Potential for confounding in large administrative data cohorts.

    Science.gov (United States)

    Strak, Maciej; Janssen, Nicole; Beelen, Rob; Schmitz, Oliver; Karssenberg, Derek; Houthuijs, Danny; van den Brink, Carolien; Dijst, Martin; Brunekreef, Bert; Hoek, Gerard

    2017-07-01

    Cohorts based on administrative data have size advantages over individual cohorts in investigating air pollution risks, but often lack in-depth information on individual risk factors related to lifestyle. If there is a correlation between lifestyle and air pollution, omitted lifestyle variables may result in biased air pollution risk estimates. Correlations between lifestyle and air pollution can be induced by socio-economic status affecting both lifestyle and air pollution exposure. Our overall aim was to assess potential confounding by missing lifestyle factors on air pollution mortality risk estimates. The first aim was to assess associations between long-term exposure to several air pollutants and lifestyle factors. The second aim was to assess whether these associations were sensitive to adjustment for individual and area-level socioeconomic status (SES), and whether they differed between subgroups of the population. Using the obtained air pollution-lifestyle associations and indirect adjustment methods, our third aim was to investigate the potential bias due to missing lifestyle information on air pollution mortality risk estimates in administrative cohorts. We used a recent Dutch national health survey of 387,195 adults to investigate the associations of PM 10 , PM 2.5 , PM 2.5-10 , PM 2.5 absorbance, OP DTT, OP ESR and NO 2 annual average concentrations at the residential address from land use regression models with individual smoking habits, alcohol consumption, physical activity and body mass index. We assessed the associations with and without adjustment for neighborhood and individual SES characteristics typically available in administrative data cohorts. We illustrated the effect of including lifestyle information on the air pollution mortality risk estimates in administrative cohort studies using a published indirect adjustment method. Current smoking and alcohol consumption were generally positively associated with air pollution. Physical activity

  18. Estimates of health risks associated with uranium transportation by air

    International Nuclear Information System (INIS)

    Elert, M.; Skagius, K.; Ericsson, A.M.; Karlsson, L.G.; Markstroem, A.

    1989-01-01

    There is today an increased interest for air transport of large quantities of uranium compounds. In this report the health risks from an aircrash where uraniumhexafluoride, uraniumdioxide powder, low enriched unirradiated fuel used in Swedish power reactors and unirradiated MTR-fuel used in the research reactor in Studsvik, is analysed. The radiation doses to personnel and the general public is calculated as well as the ground contamination from the spreaded material. Also air concentration of hydrogenflouride, from uraniumhexaflouride reacting with moisture in the air, is calculated. A number of intermediate results are presented. (authors) (69 refs.)

  19. Pneumoretroperitoneum and Perirenal Air Associated With Pneumothorax in an Extremely Low-Birth-Weight Infant

    Directory of Open Access Journals (Sweden)

    Belma Saygili Karagol

    2011-02-01

    Full Text Available Pneumothorax-associated pneumoretroperitoneum and perirenal air have rarely been reported in infants. We report a case of an extremely low-birth-weight infant who developed pneumoretroperitoneum and perirenal air associated with tension pneumothorax and deteriorated acutely despite prompt pleural water-seal vacuum drainage system insertion. Our aim in presenting this case report is to emphasize keeping in mind that there could be extrapleural air leaks, such as pneumoretroperitoneum in patients with pneumothorax.

  20. [Community residential devices associated with Psychiatric Hospital "Dr. Manuel A. Montes De Oca" in the Province of Buenos Aires, Argentina].

    Science.gov (United States)

    Keena, Cecilia; Rossetto, Jorge; Somoza, Matías; De Lellis, Martín

    2017-01-01

    The psychiatric hospital "Dr. Manuel A. Montes de Oca" has developed a Program for the Reform of the Model of Attention and Integral Rehabilitation that includes the implantation of community residential devices in the area of influence of the Institution. This program, which aims at the progressive replacement of asylum beds, has been the subject of an evaluative investigation that has included almost all the devices through a transversal and descriptive design, with instruments of survey created by the equipment and in agreement with the References of the Institution. The present article proposes to initiate a set of evaluative works in different dimensions concerning the institutional reform process, describing the antecedents, the objectives and the methodology and development of the study to achieve the general characterization of the devices. The main results of the study are summarized below on a set of aspects that we consider most signifcant for the characterization of the devices: a) Type of users served; B) Coverage of Care; C) Method of approach; D) Use of social and health services; E) Expenses and returns to the Institution; E) Main barriers encountered in the implementation of such devices. The work concludes with a series of proposals that are based on the survey carried out tending to promote the greatest possible sustainability in the implementation of the selected community devices.

  1. Prevalence of Toxocara cati and other parasites in cats' faeces collected from the open spaces of public institutions: Buenos Aires, Argentina.

    Science.gov (United States)

    Sommerfelt, I E; Cardillo, N; López, C; Ribicich, M; Gallo, C; Franco, A

    2006-09-10

    Toxocarosis is a worldwide parasitic infection that affects both cats and dogs. Toxocara cati (Schrank, 1788) syn. Toxocara mystax (Zeder, 1800) prevalence was studied in faeces from stray cats collected from the open spaces of public institutions of Buenos Aires city, both building and surrounding open spaces are fenced off. Of the 465 samples obtained from March to June of 2005, 58.3% were found to have parasite eggs. The following parasites were identified from the 271 positive samples: T. cati (61.2%), Cystoisospora spp. (20.3%), Trichuris spp. (17.0%), Toxascaris leonina (15.1%), Ancylostoma spp. (14%) and Aelurostrongylus abstrusus (2.6%). T. cati prevalence was 35.7% (95% confidence interval: 31.2-40.1), with a 42.2% single isolations. The most frequent combination was T. cati and Cystoisospora spp. (9%). More than half the areas studied showed over 40% prevalence. Seventy-one percent of the collected samples were fresh with a variable moist consistency and 29% were older with a dry consistency. A statistically significant association was found between sample consistency and presence of parasites (chi2 = 10.81; p = 0.001) as also between sample consistency and presence of T. cati (chi2 = 11.27; p = 0.0007). Moist consistencies were significantly different from the rest: consistency (wet or dry) versus parasites (z = 1.95; p = 0.02) (95% confidence interval: 0.004-0.203); consistency (wet or dry) versus T. cati (z = 3.25; p = 0.0006) (95% confidence interval: 0.075-0.254). The cat population that inhabits these public green spaces contaminates the environment, thus transforming them into dangerous spaces with a variable rate for the human population that spends time in these places.

  2. Representaciones sociales sobre la problemática de Chagas en un servicio de salud comunitaria del Gran La Plata, Buenos Aires, Argentina.

    Science.gov (United States)

    Sanmartino, Mariana; Amieva, Carolina; Medone, Y Paula

    2017-03-01

    Hablar de Chagas es hablar de una problemática compleja, definida por elementos de carácter biomédico, epidemiológico, sociocultural y político, que se conjugan dinámicamente. En este trabajo buscamos identificar y analizar las representaciones sobre Chagas de los integrantes del equipo de salud de un centro de atención periurbano de la ciudad de La Plata, Argentina. Mediante un abordaje cualitativo, se realizaron entrevistas semiestructuradas y se analizaron las respuestas con la técnica del análisis de contenido. Los resultados mostraron que la mayor parte de las personas entrevistadas no contempla al Chagas como una problemática en su contexto laboral cotidiano y manifiestan un fuerte sesgo biologicista en su formación profesional. Con este trabajo señalamos la urgente necesidad de reflexionar críticamente en torno a la formación de los profesionales de la salud en relación a problemáticas socioambientales complejas de importancia regional, como lo es el Chagas.

  3. Association of air pollution with increased incidence of ventricular tachyarrhythmias recorded by implantable cardioverter defibrillators: Vulnerable patients to air pollution.

    Science.gov (United States)

    Kim, In-Soo; Sohn, Jungwoo; Lee, Seung-Jun; Park, Jin-Kyu; Uhm, Jae-Sun; Pak, Hui-Nam; Lee, Moon-Hyoung; Kim, Changsoo; Joung, Boyoung

    2017-08-01

    This study investigated the acute effects of exposure to air pollution on ventricular tachyarrhythmias (VTAs) in an East Asian population. The association between air pollution and VTA has not yet been studied in an East Asian country affected by the Asian dust phenomenon, which worsens air quality. The study cohort consisted of 160patients with implantable cardioverter defibrillator (ICD) devices in the Seoul metropolitan area who were followed for 5.5±3.8years. We used ICD records of VTAs and matched these with hourly measurements of air pollutant concentrations and meteorological data. Fine particle mass and gaseous air pollution plus temperature and relative humidity were measured hourly during the study period. During the study period, 1064 VTA events including 204 instances of ventricular fibrillation (VF) were observed. We found a statistically significant association between overall VTA events and SO 2 (lag 24h; OR 1.49, 95%CI 1.16-1.92, p=0.002), PM 10 (lag 2h; OR 2.56, 95%CI 2.03-3.23, pair pollution and VTA were observed in a metropolitan area of an East Asian country. Exposures to SO 2 , PM 10 , NO 2 , and CO were significantly associated with VTAs in ICD patients with SHD. Copyright © 2017 Elsevier B.V. All rights reserved.

  4. Brain responses associated with consciousness of breathlessness (air hunger).

    Science.gov (United States)

    Liotti, M; Brannan, S; Egan, G; Shade, R; Madden, L; Abplanalp, B; Robillard, R; Lancaster, J; Zamarripa, F E; Fox, P T; Denton, D

    2001-02-13

    Little is known about the physiological mechanisms subserving the experience of air hunger and the affective control of breathing in humans. Acute hunger for air after inhalation of CO(2) was studied in nine healthy volunteers with positron emission tomography. Subjective breathlessness was manipulated while end-tidal CO(2-) was held constant. Subjects experienced a significantly greater sense of air hunger breathing through a face mask than through a mouthpiece. The statistical contrast between the two conditions delineated a distributed network of primarily limbic/paralimbic brain regions, including multiple foci in dorsal anterior and middle cingulate gyrus, insula/claustrum, amygdala/periamygdala, lingual and middle temporal gyrus, hypothalamus, pulvinar, and midbrain. This pattern of activations was confirmed by a correlational analysis with breathlessness ratings. The commonality of regions of mesencephalon, diencephalon and limbic/paralimbic areas involved in primal emotions engendered by the basic vegetative systems including hunger for air, thirst, hunger, pain, micturition, and sleep, is discussed with particular reference to the cingulate gyrus. A theory that the phylogenetic origin of consciousness came from primal emotions engendered by immediate threat to the existence of the organism is discussed along with an alternative hypothesis by Edelman that primary awareness emerged with processes of ongoing perceptual categorization giving rise to a scene [Edelman, G. M. (1992) Bright Air, Brilliant Fire (Penguin, London)].

  5. Relative Militarization and Its Impact on Public Policy Budgetary Shifts in Argentina, 1963-1982

    Science.gov (United States)

    1988-07-01

    Until such a time, the reader is advised to consult the extensive literature on the subject (e.g. Cavarozzi, 1983; Historia Politica Argentina , 1985...34 Desarrollo Econ6mico, V.19. (1981), "Teoria y practica del liberalismo. Politica antiinfla- cionaria y apertura economica en la Argentina 1976-1981...American Political Economy. Boulder: Westview Press. Historia Politica Argentina , 1942-1982. (1985) Buenos Aires: Editorial del Belgrano. 48 Hughes, S.W

  6. Technical Issues Associated with Air Ingression During Core Degradation

    International Nuclear Information System (INIS)

    Powers, Dana A.

    2000-01-01

    This paper has shown that it is possible to get significant air intrusion into a ruptured reactor vessel even from a reactor cavity with restricted access. This suggests that there is some importance to considering the consequences of air intrusion following vessel penetration by core debris. The consequences will depend on the nature of core degradation in air and other oxidizing gases. If, indeed, fuel becomes exposed to strongly oxidizing gases, significant releases of ruthenium and hexavalent urania can be expected. Hexavalent urania could alter the nature of cesium release and cesium revaporization from the reactor coolant system. Hexavalent urania could destabilize CSI and enhance the formation of gaseous iodine unless there are other materials that will react readily with atomic iodine along the flow path to the reactor containment

  7. Streamer properties and associated x-rays in perturbed air

    DEFF Research Database (Denmark)

    Köhn, C; Chanrion, O; Babich, L P

    2018-01-01

    Streamers are ionization waves in electric discharges. One of the key ingredients of streamerpropagation is an ambient gas that serves as a source of free electrons. Here, we explore thedependence of streamer dynamics on different spatial distributions of ambient air molecules. We varythe spatial...... profile of air parallel and perpendicular to the ambient electric field. We consider localsinusoidal perturbations of 5%–100%, as induced from discharge shock waves. We use acylindrically symmetric particle-in-cell code to simulate the evolution of bidirectional streamers andcompare the electron density...

  8. 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

  9. La evaluación del desarrollo psicológico en los dispensarios de lactantes de Buenos Aires: medicina y psicología en la Argentina, 1935-1942

    Directory of Open Access Journals (Sweden)

    Ana Briolotti

    Full Text Available Resumen El trabajo indaga el uso médico de las técnicas de evaluación psicológica en dispensarios de lactantes de Buenos Aires en el marco de los estudios históricos de la psicología en la Argentina. Analiza el ámbito institucional para elucidar el entramado de discursos en el que cabe situar el interés por el control del desarrollo psicológico. Estudia las pruebas utilizadas, las características de la aplicación y los resultados más significativos. Explora las vicisitudes del campo profesional, a la luz de las cuales el recurso a la psicología habría sido útil para consolidar la legitimación del saber médico. Advierte una divergencia entre este uso médico de la psicología y la producción y circulación de conocimiento psicológico en los ámbitos académico y educativo.

  10. El discurso como ejercicio de la territorialidad. Disputas y discursos territoriales en la costa marítima de Buenos Aires (Argentina

    Directory of Open Access Journals (Sweden)

    Facundo Martín Hernández

    2016-01-01

    Full Text Available El presente artículo aborda la tensión entre actores suscitada en la dialéctica de territorialización en determinados espacios marítimos-costeros bonaerenses (Argentina desde una perspectiva geográfica y discursiva. Se parte del supuesto de que la creación de territorios no siempre implica conflictividad, aunque siempre que existe disputa sobre el carácter de un determinado espacio se están ejerciendo formas antagónicas o divergentes de territorialidad. En los casos donde se producen pugnas por el territorio se activa un tipo discursivo que denominamos territorial, por lo tanto, el primer objetivo del trabajo es proponer una definición del mismo. Como caso de estudio se seleccionaron las disputas territoriales gestadas en torno al desarrollo de infraestructura turística en la costa bonaerense, respondiendo al modelo más simple de enfrentamiento: la oposición de un sujeto colectivo a un particular proceso de territorialización. Una cualidad común de los casos seleccionados es la asimetría en las relaciones de fuerza, lo que lleva al actor que se opone a tal o cual intervención en el territorio a desarrollar su estrategia de territorialidad mediante acciones innovadoras y creativas, entre ellas, la puesta en práctica de discursos territoriales. El segundo objetivo es el análisis de estos discursos elaborados por aquellos actores que protagonizan disputas en escenarios turísticos de la costa bonaerense. Para los objetivos propuestos se efectuó un análisis interpretativo de los discursos territoriales en tres movimientos regionales con proyección social, capacidad organizativa y continuidad, extrayendo el material de las diversas formas de comunicación y difusión con el que cuentan.

  11. 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

  12. Prevalence of molar-incisor hypomineralization (MIH) in children seeking dental care at the Schools of Dentistry of the University of Buenos Aires (Argentina) and University of la Republica (Uruguay).

    Science.gov (United States)

    Biondi, Ana M; López Jordi, María del C; Cortese, Silvina G; Alvarez, Licet; Salveraglio, Inés; Ortolani, Andrea M

    2012-01-01

    The objectives of this study are to compare the prevalence of MIH in children seeking dental care spontaneously at the Department of Comprehensive Children's Dentistry of the University of Buenos Aires (UBA) and Department of Pediatric Dentistry of the University of La República (UdelaR) and to analyze the distribution according to year of birth, sex, age, number of affected teeth and maximum degree of severity in molars and incisors. During 2010, nine pediatric dentists from both schools (Kappa = 0.94) assessed all children born between 1993 and 2003 whose 4 first molars and 8 permanent incisors had erupted. Specially designed charts were used to record sex, year of birth, institution, presence of MIH, number of affected incisors and molars and maximum degree of severity for each tooth. Two groups were formed: UBA: A (n = 512) and UdelaR: B (n = 463). 975 children (11.6 +/- 2.67 years) were evaluated. The prevalence of MIH in the total sample was 6.56%, without significant differences between A and B (p = 0.76). There was no significant difference between groups regarding age (p = 0. 95) or sex (p = 0.30). A significant increase was found in both institutions according to year of birth during the study period. (A: p = 0.0017) B: p = 0. 0058). The results of this study show a similar prevalence of MIH among patients seeking dental care at the Schools of Dentistry of the University of Buenos Aires (Argentina) and University of la República (Uruguay). No significant difference was found comparing the distribution by sex, affected teeth or severity of each tooth. A highly significant positive correlation was found regarding the year of birth. The relevance of MIH as an emerging pathology requires studies on larger samples covering the entire countries.

  13. Andean Basin Evolution Associated with Hybrid Thick- and Thin-Skinned Deformation in the Malargüe Fold-Thrust Belt, Western Argentina

    Science.gov (United States)

    Horton, B. K.; Fuentes, F.

    2015-12-01

    Andean deformation and basin evolution in the Malargüe fold-thrust belt of western Argentina (34-36°S) has been dominated by basement faults influenced by pre-existing Mesozoic rift structures of the hydrocarbon-rich Neuquen basin. However, the basement structures diverge from classic inversion structures, and the associated retroarc basin system shows a complex Mesozoic-Cenozoic history of mixed extension and contraction, along with an enigmatic early Cenozoic stratigraphic hiatus. New results from balanced structural cross sections (supported by industry seismic, well data, and surface maps), U-Pb geochronology, and foreland deposystem analyses provide improved resolution to examine the duration and kinematic evolution of Andean mixed-mode deformation. The basement structures form large anticlines with steep forelimbs and up to >5 km of structural relief. Once the propagating tips of the deeper basement faults reached cover strata, they fed slip to shallow thrust systems that were transported in piggyback fashion by newly formed basement structures, producing complex structural relationships. Detrital zircon U-Pb ages for the 5-7 km-thick basin fill succession reveal shifts in sedimentation pathways and accumulation rates consistent with (1) local basement sources during Early-Middle Jurassic back-arc extension, (2) variable cratonic and magmatic arc sources during Late Jurassic-Cretaceous postrift thermal subsidence, and (3) Andean arc and thrust-belt sources during irregular Late Cretaceous-Cenozoic shortening. Although pulses of flexural subsidence can be attributed to periods of fault reactivation (inversion) and geometrically linked thin-skinned thrusting, fully developed foreland basin conditions were only achieved in Late Cretaceous and Neogene time. Separating these two contractional episodes is an Eocene-lower Miocene (roughly 40-20 Ma) depositional hiatus within the Cenozoic succession, potentially signifying forebulge passage or neutral to

  14. Area Handbook Series: Argentina: A Country Study

    Science.gov (United States)

    1985-08-01

    votes after a campaign that emphasized firm opposition to the military government and verbal attacks on the trade union leadership of the PJ...legal pro- cedures that were designed especially for these cases. The trials were open to the public, evidence would be taken verbal - ly instead of...1981,144-45. Terrera, Guillermo Alfredo. Geopolitica Argentina: Poblacion, fronteras, comunicaciones , antropologia. Buenos Aires: Edi- torial Plus

  15. The "Private School Advantage" in Argentina

    Directory of Open Access Journals (Sweden)

    Gustavo E. Fischman

    2001-08-01

    Full Text Available Local actors' perceptions of curricular and management changes in two private schools and one neighboring public secondary school in the city of Buenos Aires, Argentina, are analyzed. An exploration was conducted of how, within an ideologically and politically pro-reform context and a widespread acceptance of the "private school advantage," principals, teachers, and students in these schools evaluated the changes (or lack of them in management, teaching, and curriculum orientations of the secondary education sector.

  16. The "Private School Advantage" in Argentina

    OpenAIRE

    Gustavo E. Fischman

    2001-01-01

    Local actors' perceptions of curricular and management changes in two private schools and one neighboring public secondary school in the city of Buenos Aires, Argentina, are analyzed. An exploration was conducted of how, within an ideologically and politically pro-reform context and a widespread acceptance of the "private school advantage," principals, teachers, and students in these schools evaluated the changes (or lack of them) in management, teaching, and curriculum orientations of the se...

  17. Associations between maternal exposure to air pollution and traffic noise and newborn's size at birth

    DEFF Research Database (Denmark)

    Hjortebjerg, Dorrit; Andersen, Anne Marie Nybo; Ketzel, Matthias

    2016-01-01

    BACKGROUND: Maternal exposure to air pollution and traffic noise has been suggested to impair fetal growth, but studies have reported inconsistent findings. Objective To investigate associations between residential air pollution and traffic noise during pregnancy and newborn's size at birth....... METHODS: From a national birth cohort we identified 75,166 live-born singletons born at term with information on the children's size at birth. Residential address history from conception until birth was collected and air pollution (NO2 and NOx) and road traffic noise was modeled at all addresses...... between air pollution and birth weight. Exposure to residential road traffic noise was weakly associated with reduced head circumference, whereas none of the other newborn's size indicators were associated with noise, neither before nor after adjustment for air pollution. CONCLUSIONS: This study indicates...

  18. 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.

  19. Pneumatosis cystoides intestinalis associated with massive free air mimicking perforated diffuse peritonitis.

    Science.gov (United States)

    Sakurai, Yoichi; Hikichi, Masahiro; Isogaki, Jun; Furuta, Shinpei; Sunagawa, Risaburo; Inaba, Kazuki; Komori, Yoshiyuki; Uyama, Ichiro

    2008-11-21

    While pneumatosis cystoides intestinalis (PCI) is a rare disease entity associated with a wide variety of gastrointestinal and non-gastrointestinal disorders, PCI associated with massive intra- and retroperitoneal free air is extremely uncommon, and is difficult to diagnose differentially from perforated peritonitis. We present two cases of PCI associated with massive peritoneal free air and/or retroperitoneal air that mimicked perforated peritonitis. These cases highlight the clinical importance of PCI that mimics perforated peritonitis, which requires emergency surgery. Preoperative imaging modalities and diagnostic laparoscopy are useful to make an accurate diagnosis.

  20. Glass science tutorial: Lecture No. 4, commercial glass melting and associated air emission issues

    International Nuclear Information System (INIS)

    Kruger, A.A.

    1995-01-01

    This document serves as a manual for a workshop on commercial glass melting and associated air emission issues. Areas covered include: An overview of the glass industry; Furnace design and construction practices; Melting furnace operation; Energy input methods and controls; Air legislation and regulations; Soda lime emission mechanisms; and, Post furnace emission controls. Supporting papers are also included

  1. Glass science tutorial: Lecture No. 4, commercial glass melting and associated air emission issues

    Energy Technology Data Exchange (ETDEWEB)

    Kruger, A.A.

    1995-01-01

    This document serves as a manual for a workshop on commercial glass melting and associated air emission issues. Areas covered include: An overview of the glass industry; Furnace design and construction practices; Melting furnace operation; Energy input methods and controls; Air legislation and regulations; Soda lime emission mechanisms; and, Post furnace emission controls. Supporting papers are also included.

  2. Ecology of rodent-associated hantaviruses in the Southern Cone of South America: Argentina, Chile, Paraguay, and Uruguay.

    Science.gov (United States)

    Palma, R Eduardo; Polop, Jaime J; Owen, Robert D; Mills, James N

    2012-04-01

    Thirteen hantavirus genotypes, associated with at least 12 sigmodontine reservoir rodents, have been recognized in the four countries that represent the Southern Cone of South America. Host-virus relationships are not as well defined as in North America; several Southern Cone hantaviruses appear to share a common host and some viruses do not occur throughout the range of their host. Although hantavirus-host relationships in the Southern Cone are less strictly concordant with the single-host-single-virus pattern reported elsewhere, recent studies suggest that much of the ambiguity may result from an incomplete understanding of host and hantavirus systematics. Although some Southern Cone host species are habitat generalists, some sympatric species are habitat specialists, helping to explain how some strict host-virus pairings may be maintained. In some cases, host population densities were higher in peridomestic habitats and prevalence of hantavirus infection was higher in host populations in peridomestic habitats. Seasonal and multiyear patterns in climate and human disturbance affect host population densities, prevalence of infection, and disease risk to humans. Unusually high hantavirus antibody prevalence in indigenous human populations may be associated with frequent and close contact with host rodents. Ongoing studies are improving our understanding of hantavirus-host ecology and providing tools that may predict human risk.

  3. The nuclear research centre at Bariloche, Argentina

    International Nuclear Information System (INIS)

    Abriata, J.P.

    2001-01-01

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

  4. Turismo urbano en contexto metropolitano: Tigre como destino turístico en el Área Metropolitana de Buenos Aires (Argentina

    Directory of Open Access Journals (Sweden)

    Rodolfo V. Bertoncello

    2016-08-01

    Full Text Available This article addresses the issue of the city as tourist destination, specifically in relation to metropolitan configurations and dynamics. The article analyzes a tourist destination -the town of Tigreas part of the Metropolitan Area of Buenos Aires and its incorporation into the so called “Buenos Aires tourist destination”. The role of the tourist resort in the metropolitan context is analyzed beginning with the recognition of the paucity of studies on the subject at this scale. The article focuses on the analysis of the processes that lead to the establishing of the town as a tourist destination, assuming that this character is the result of specific actions to adapt the locality to tourist requirements. This focus questions the widespread approaches that assume the “tourist vocation” of localities as natural.

  5. Soybean biomass produced in Argentina

    DEFF Research Database (Denmark)

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

    2009-01-01

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

  6. Argentina's chemical makers seek government support

    International Nuclear Information System (INIS)

    Salles, F.

    1993-01-01

    Argentina's chemical industry association, Camara de la Industria Quimica y Petroquimica (CIQYP; Buenos Aires), has started negotiations with the government aiming to stem industry-wide losses, which reached $236 million during the past 18 months. CIQYP blames the poor performance on worldwide over-supply and falling prices, which have curbed exports, and low tariffs, which have spurred imports. It is calling for higher import tariffs and export incentives. The talks will also focus on a possible bond issue that would support companies willing to restructure and modernize operations. The main factor hindering competitiveness is what CIQYP president Alejandro Achaval calls Argentinean cost, including high energy costs, high provincial and federal taxes, and high financing charges. Since 1988, the industry has cut prices by 30%, formed mergers and joint ventures, closed 11 plants and started five new ones, slashed the workforce by 27%, and engaged in the government's privatization program. Meanwhile, plans to privatize 64% of aromatics producer Petroquimica General Mosconi(PGM) were derailed when potential bidders Diamond Shamrock, Shell, and Perez Companc refused for the second time to make offers on February 2. Jorge Olazabal, planning secretary of the Ministry of Defense, says PGM will be put up for sale again by March

  7. Yeast and yeast-like fungi associated with dry indehiscent fruits of Nothofagus nervosa in Patagonia, Argentina.

    Science.gov (United States)

    Fernández, Natalia V; Mestre, M Cecilia; Marchelli, Paula; Fontenla, Sonia B

    2012-04-01

    Nothofagus nervosa (Raulí) is a native tree species that yields valuable timber. It was overexploited in the past and is currently included in domestication and conservation programs. Several research programs have focused on the characterization of epiphytic microorganisms because it has been demonstrated that they can affect plant-pathogen interactions and/or promote plant growth. Although the microbial ecology of leaves has been well studied, less is known about microorganisms occurring on seeds and noncommercial fruits. In this work, we analyzed the yeast and yeast-like fungi present on N. nervosa fruits destined for the propagation of this species, as well as the effects of fruit preservation and seed dormancy-breaking processes on fungal diversity. Morphological and molecular methods were used, and differences between fungal communities were analyzed using a similarity index. A total of 171 isolates corresponding to 17 species were recovered, most of which belong to the phylum Ascomycota. The majority of the species develop mycelia, produce pigments and mycosporines, and these adaptation strategies are discussed. It was observed that the preservation process considerably reduced yeast and yeast-like fungal diversity. This is the first study concerning microbial communities associated with this ecologically and economically important species, and the information presented is relevant to domestication programs. © 2011 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved.

  8. Helosis (Balanophoraceae en Argentina Helosis (Balanophoraceae in Argentina

    Directory of Open Access Journals (Sweden)

    José Luis Fontana

    2006-07-01

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

  9. Factores predictivos de la no adherencia al tratamiento de la tuberculosis en municipios del Área Metropolitana de Buenos Aires, Argentina

    OpenAIRE

    Silvina Arrossi; María Belén Herrero; Adriana Greco; Silvina Ramos

    2012-01-01

    El objetivo de este estudio fue identificar las características sociodemográficas de los pacientes y las características del tratamiento que influyen en la no-adherencia al tratamiento antituberculoso. Se realizó un estudio de corte transversal, en el Área Metropolitana de Buenos Aires. Se encuestaron 38 pacientes que no adhirieron al tratamiento y 85 pacientes que adhirieron al tratamiento, diagnosticados durante el año 2007, residentes y atendidos en hospitales de municipios seleccionados. ...

  10. Variación de la recarga entre La Plata y Santa Isabel (provincias de Buenos Aires y La Pampa - Argentina) : Propuesta metodológica

    OpenAIRE

    Hernández, Mario Alberto; Giai, Santiago B.

    1996-01-01

    Se analiza la recarga potencial de aguas subterráneas sobre un perfil entre La Plata y Santa Isabel (Buenos Aires y La Pampa). El mismo tiene la particularidad de ser perpendicular a las isohietas, extendiéndose desde una zona húmeda lindante con el río de la Plata, hasta otra de fuerte aridez y continentalidad, unos 900 km al Oeste. Algunos de los factores influyentes en el monto de la recarga tienen el mismo valor en todo el perfil, alcanzando su intervención igual peso en todas las local...

  11. Estudios etnobotánicos en la conurbación Buenos Aires-La Plata, Argentina: Productos de plantas medicinales introducidos por inmigrantes paraguayos

    OpenAIRE

    Julio A. Hurrell; Jeremías P. Puentes; Patricia M. Arenas

    2017-01-01

    Este trabajo incluye resultados parciales de una línea de investigación en Etnobotánica urbana, que estudia los conocimientos locales sobre las plantas, sus partes y productos derivados en la conurbación Buenos Aires-La Plata. Se incluyen productos de plantas medicinales de reciente ingreso en el área de estudio a través de inmigrantes oriundos de Paraguay. Los productos corresponden a 10 especies: Achyrocline alata(“jateí-ka’á”), Baccharis gaudichaudiana (“jaguareté-ka’á”), Cuphea lysimachio...

  12. Alteración diagenética y preservación diferencial de los conjuntos óseos de la localidad arqueológica Paso Otero (provincia de Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Nielsen-Marsh, C.

    2000-12-01

    Full Text Available The main goal of this paper is to provide a taphonomic analysis related to the process of physical and chemical alteration of the bone structure caused by post-burial processes or diagenesis. Particularly, this research focuses on four archaeological assemblages from the Paso Otero archaeological locality (Buenos Aires Province, Argentina. The study of diagenetic parameters such as porosity, crystallinity (IRSF, diagenetic carbonate content (C/P, calcite, protein content (%N and histology were applied to bone assemblages of archaeological sites recorded in «A» buried soil horizons located in ancient flood plains in the middle basin of the Quequén Grande River. The chronological span includes the late Pleistocene and the beginning of the late Holocene. The analysis of bone microstructure indicates a pattero of differential bone preservation even when the archaeological assemblages come from quite similar environmental depositional settings. Consequently, it is remarkable that every site has undergone a very particular taphonomic history regarding post-burial processes. The possible causes of theses differences are explored and discussed.El objetivo de este trabajo es el de determinar el grado de alteración diagenética de cuatro conjuntos óseos provenientes de tres sitios de la localidad arqueológica Paso Otero, ubicada en la cuenca media del río Quequén Grande (Provincia de Buenos Aires, Argentina. Los sitios analizados tienen una cronología comprendida entre el límite Pleistoceno/Holoceno y los inicios del Holoceno tardío. Específicamente, se caracteriza el grado de modificación post-depositacional de cada uno de los conjuntos de acuerdo a la aplicación de parámetros diagenéticos que incluyen porosidad, cristalinidad (IRSF, presencia de carbonatos diagenéticos (C/P, integridad histológica, contenido total de proteína (%N y calcita. Los resultados alcanzados indican que, a pesar de la similitud de los ambientes de

  13. DIAGNÓSTICO Y PREVALENCIA DE SARCOPENIA: UN ESTUDIO INTERDISCIPLINARIO Y MULTICÉNTRICO CON ADULTOS MAYORES DE CIUDAD AUTÓNOMA DE BUENOS AIRES (CABA Y ÁREA METROPOLITANA, ARGENTINA

    Directory of Open Access Journals (Sweden)

    Nemerovsky J

    2015-05-01

    Full Text Available Introduction: Sarcopenia is the loss of strength and muscle mass during aging, and it is a highly prevalent geriatric syndrome. Objectives: To determine the prevalence of sarcopenia in a group of elderly in the metropolitan area of Buenos Aires (Argentina, using the criteria proposed by the European Working Group on sarcopenia in Older People (EWGSOP. Methods: quantitative, descriptive, correlational, cross-sectional study. The sample was 82 adults, 65 and older, non-probabilistic by volunteers. Body Mass Index (BMI, Mini Nutritional Assessment (MNA, Muscle Mass Index (IMM (bioelectrical impedance equipment InBody 120, muscle strength (Jamar 5030J1 Integral Gerontological Rating (VGI, Depression (Test was evaluated Yesavage and protective factors for pathological aging (FAPREN were evaluated. For data analysis we used SPSS statistics 20. Results: A sample of 82 subjects divided as follows, 67 women (81.7% and 15 men (18.3% were evaluated; the average age was 75.37 ± 6.29 years. According to the criteria proposed by the EWGSOP: 55 volunteers (67.1% they had sarcopenia, 34.1% (n = 28 pre-sarcopenia, 28% (n = 23 sarcopenia and 4.9% (n = 4 severe sarcopenia. 54.5% of sarcopenic of overweight and obesity, significant relationship between IMM and BMI (p = 0.0004. No significant relationship between sarcopenia and cognitive impairment or depression was found. Conclusion: The prevalence of sarcopenia is significant in the studied sample. The travel speed, Rise and Walk Test and Barthel showed little functional impact on sarcopenic volunteers. Sarcopenic showed that obesity is significant in the studied sample.

  14. Procesos macroeconómicos y homicidios. Un estudio ecológico en los partidos del gran Buenos Aires (Argentina entre los años 1989 y 2006

    Directory of Open Access Journals (Sweden)

    Hugo Spinelli

    2008-01-01

    Full Text Available Se analizó la evolución de la tasa de homicidios en los partidos del Gran Buenos Aires, en el período comprendido entre los años 1989 y 2006, y la estimación de la relación existente entre estos eventos y los procesos macroeconómicos que se desarrollaron en Argentina durante el período descrito. Se realizó un estudio ecológico, con análisis de correlación entre series "sin tendencia" de las variables para evaluar la existencia de asociación entre la mortalidad por homicidios e indicadores macroeconómicos seleccionados (previo proceso de suavizado de la tendencia de las curvas según técnica de Hodrick-Prescott. Los principales resultados son: la tasa de homicidios disminuye durante los dos primeros años para mantenerse en una meseta hasta el año 1997, cuando comienza a aumentar. Llega a su valor máximo en el año 2002 (11,1 por 100.000 habitantes para comenzar un descenso que se ubica, en el año 2006, en valores similares a los de 1992. Fue hallada una correlación estadísticamente significativa entre la tasa de homicidios y el coeficiente de Gini (según ingresos familiares, el porcentaje de población bajo la línea de pobreza e indigencia y el PIB. No fue hallada correlación entre homicidios y desempleo. Los hallazgos sugieren que la variación de la tasa de homicidios está ligada directamente al empobrecimiento y la desigualdad, e inversamente al desarrollo económico

  15. Promoting Mental Health and Community Participation: A study on participatory arts practice, creativity and play in the city of Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    C. L. Bang

    2015-07-01

    Full Text Available The purpose of this paper is to describe and analyze a participative health experience involving art, creativity and play, in articulation with the strategy of Comprehensive Primary Health Care focused on mental health. This experience is conducted by a network of institutions in Buenos Aires City.This is an exploratory and descriptive case study based on qualitative research methodologies. From an ethnographic perspective, the fieldwork revolved around interviews and participant observation records. The systematization process followed qualitative analysis content techniques. The outcomes describe a practice cored in intersectoral work, community participation, occupation of public space, creation of community gathering spaces and conformation of solidarity ties for addressing complex psychosocial issues. The main participatory processes focused on community organization and collective artistic creations are described. It is concluded that this experience shows great transforming potential, creating community conditions suitable for joint decision making on the health- illness care process itself.

  16. Buenos Aires mesmérica. Hipnosis y magnetismo en la cultura y la ciencia de la capital argentina (1870-1900

    Directory of Open Access Journals (Sweden)

    Mauro Sebastián Vallejo

    2015-01-01

     Abstract The purpose of this paper is to analyze the topic of hypnotism in the science and the culture of Buenos Aires during the last quarter of the nineteenth century. When Argentine medicine became conceptually and practically interested in hypnosis it encoun­tered a multiplicity of actors (spirititsts, illusionists, quacks that also used it with different aims. This text intends to describe the tensions and disputes sustained between physi­cians and their competitors. In addition to pointing out which were the professionals that contributed to the study of the new therapy, this paper identifies the strategies carried out by representatives of the official science in order to finish with other uses of artificial somnambulism

  17. The Impact of Multipollutant Clusters on the Association Between Fine Particulate Air Pollution and Microvascular Function.

    Science.gov (United States)

    Ljungman, Petter L; Wilker, Elissa H; Rice, Mary B; Austin, Elena; Schwartz, Joel; Gold, Diane R; Koutrakis, Petros; Benjamin, Emelia J; Vita, Joseph A; Mitchell, Gary F; Vasan, Ramachandran S; Hamburg, Naomi M; Mittleman, Murray A

    2016-03-01

    Prior studies including the Framingham Heart Study have suggested associations between single components of air pollution and vascular function; however, underlying mixtures of air pollution may have distinct associations with vascular function. We used a k-means approach to construct five distinct pollution mixtures from elemental analyses of particle filters, air pollution monitoring data, and meteorology. Exposure was modeled as an interaction between fine particle mass (PM2.5), and concurrent pollution cluster. Outcome variables were two measures of microvascular function in the fingertip in the Framingham Offspring and Third Generation cohorts from 2003 to 2008. In 1,720 participants, associations between PM2.5 and baseline pulse amplitude tonometry differed by air pollution cluster (interaction P value 0.009). Higher PM2.5 on days with low mass concentrations but high proportion of ultrafine particles from traffic was associated with 18% (95% confidence interval: 4.6%, 33%) higher baseline pulse amplitude per 5 μg/m and days with high contributions of oil and wood combustion with 16% (95% confidence interval: 0.2%, 34%) higher baseline pulse amplitude. We observed no variation in associations of PM2.5 with hyperemic response to ischemia observed across air pollution clusters. PM2.5 exposure from air pollution mixtures with large contributions of local ultrafine particles from traffic, heating oil, and wood combustion was associated with higher baseline pulse amplitude but not hyperemic response. Our findings suggest little association between acute exposure to air pollution clusters reflective of select sources and hyperemic response to ischemia, but possible associations with excessive small artery pulsatility with potentially deleterious microvascular consequences.

  18. Measurements of atmospheric fallout in Argentina

    International Nuclear Information System (INIS)

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

    1998-01-01

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

  19. The Association between Air Pollution and Outpatient and Inpatient Visits in Shenzhen, China

    Science.gov (United States)

    Liu, Yachuan; Chen, Shanen; Xu, Jian; Liu, Xiaojian; Wu, Yongsheng; Zhou, Lin; Cheng, Jinquan; Ma, Hanwu; Zheng, Jing; Lin, Denan; Zhang, Li; Chen, Lili

    2018-01-01

    Nowadays, air pollution is a severe environmental problem in China. To investigate the effects of ambient air pollution on health, a time series analysis of daily outpatient and inpatient visits in 2015 were conducted in Shenzhen (China). Generalized additive model was employed to analyze associations between six air pollutants (namely SO2, CO, NO2, O3, PM10, and PM2.5) and daily outpatient and inpatient visits after adjusting confounding meteorological factors, time and day of the week effects. Significant associations between air pollutants and two types of hospital visits were observed. The estimated increase in overall outpatient visits associated with each 10 µg/m3 increase in air pollutant concentration ranged from 0.48% (O3 at lag 2) to 11.48% (SO2 with 2-day moving average); for overall inpatient visits ranged from 0.73% (O3 at lag 7) to 17.13% (SO2 with 8-day moving average). Our results also suggested a heterogeneity of the health effects across different outcomes and in different populations. The findings in present study indicate that even in Shenzhen, a less polluted area in China, significant associations exist between air pollution and daily number of overall outpatient and inpatient visits. PMID:29360738

  20. The Association between Air Pollution and Outpatient and Inpatient Visits in Shenzhen, China

    Directory of Open Access Journals (Sweden)

    Yachuan Liu

    2018-01-01

    Full Text Available Nowadays, air pollution is a severe environmental problem in China. To investigate the effects of ambient air pollution on health, a time series analysis of daily outpatient and inpatient visits in 2015 were conducted in Shenzhen (China. Generalized additive model was employed to analyze associations between six air pollutants (namely SO2, CO, NO2, O3, PM10, and PM2.5 and daily outpatient and inpatient visits after adjusting confounding meteorological factors, time and day of the week effects. Significant associations between air pollutants and two types of hospital visits were observed. The estimated increase in overall outpatient visits associated with each 10 µg/m3 increase in air pollutant concentration ranged from 0.48% (O3 at lag 2 to 11.48% (SO2 with 2-day moving average; for overall inpatient visits ranged from 0.73% (O3 at lag 7 to 17.13% (SO2 with 8-day moving average. Our results also suggested a heterogeneity of the health effects across different outcomes and in different populations. The findings in present study indicate that even in Shenzhen, a less polluted area in China, significant associations exist between air pollution and daily number of overall outpatient and inpatient visits.

  1. Comparación de caracteres corporales y del veneno de Bothrops alternatus entre poblaciones de las provincias de Buenos Aires y Entre Ríos, Argentina

    Directory of Open Access Journals (Sweden)

    Rocco, Daniela Marisa

    2011-11-01

    Full Text Available Comparamos caracteres corporales y producción de veneno de ejemplares de Bothrops alternatus de una población aislada geográficamente (Olavarría, región de Tandilia, Buenos Aires con otra en su área de distribución continua de Concordia (Entre Ríos. Estudiamos el largo corporal, peso, separación entre dientes inoculadores, cantidad de veneno y de proteínas en el veneno por ejemplar. No se hallaron diferencias en los caracteres estudiados entre ambas poblaciones (p > 0.05. Las hembras fueron mayores que los machos en ambas muestras, entre un 12-18% (p 0.5; Olavarría: 142 ± 65 mg/animal, Concordia: 160 ± 80 mg/animal, aún ajustando la cantidad de veneno producida respecto al tamaño, mediante el cociente veneno/largo corporal (p >0.6. Tampoco hubo diferencias en el contenido proteico, siendo para ambas muestras de 0.697 ± 0.096 mg de proteínas/mg de veneno seco. Nuestros datos sugieren que los ejemplares de la población aislada de Tandilia no presentan variaciones en el tamaño corporal o en la cantidad de veneno producida, respecto a los ejemplares de Concordia. Some corporal characters and venom yield of adult specimens of Bothrops alternatus from the isolated region of Olavarría (Tandilian Region, Buenos Aires and the region of continuous distribution of Concordia (Entre Ríos were compared. Corporal length, weight, separation between fangs, venom yield by snake and the amount of protein in the venom were determined. No differences in the distinct characters from specimens from both regions were found (p > 0.05. Females were greater than males in both samples, 12-18% (p 0.5; Olavarría= 142 ± 65 mg / animal, Concordia= 161 ± 80 mg / animal even adjusting the venom yield with the corporal length by the relation mg of venom / corporal length (p > 0.6. No differences were observed in the protein content of the dry venom which was of 0.697 ± 0.096 mg of protein / mg of dry venom. From the study of these samples, it could be

  2. 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.

  3. Adaptógenos: plantas medicinales tradicionales comercializadas como suplementos dietéticos en la conurbación Buenos Aires-La Plata (Argentina

    Directory of Open Access Journals (Sweden)

    Patricia M. Arenas

    2011-07-01

    Full Text Available En el presente trabajo se presentan los resultados de un estudio sobre tres especies de las cuales se comercializan productos considerados adaptógenos: Lepidium meyenii Walp. (Brassicaceae, "maca", Morinda citrifolia L. (Rubiaceae, "noni", y Petiveria alliacea L. (Phytolaccaceae, "pipi". Los datos provienen de estudios en Etnobotánica urbana realizados en la conurbación Buenos Aires-La Plata, se presentan los usos tradicionales de las especies, sus vías de ingreso, comercialización y difusión como suplementos dietéticos en el contexto pluricultural urbano, los modos actuales de empleo y los saberes relacionados, que forman parte del conocimiento botánico local. De este modo, se evalúan las modificaciones en los usos originalmente asignados, como consecuencia de la expansión de los productos en el marco de la globalización, y los cambios consecuentes en los patrones tradicionales de saberes, creencias y prácticas referidos a estos recursos vegetales

  4. Caracterización de los Servicios de Atención en Violencia Familiar del área metropolitana de Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Ynoub Roxana Cecilia

    1998-01-01

    Full Text Available Se presentan, en este trabajo, un diagnóstico y evaluación de la disponibilidad de servicios existentes en la región metropolitana de Buenos Aires para la atención en Violencia Familiar Contra la Mujer. De ellos se describen las redes existentes y las articulaciones intersectoriales. Asimismo se evaluan su desarrollo institucional, los enfoques teóricos, las modalidades de intervención y la producción de información e investigaciones. Entre los resultados, se destaca la presencia de distintas perspectivas teóricas ­ particularmente entre quienes incluyen o no la temática de género ­, a las que corresponden distintas modalidades de intervención; y las conexiones ­ más informales que formales ­ entre distintos sectores y áreas oficiales y las organizaciones no gubernamentales. Finalmente se proponen las experiencias institucionales desarrolladas en esta tema como un modelo de nuevas modalidades en el diseño de políticas públicas y de salud.

  5. Turismo urbano en contexto metropolitano: Tigre como destino turístico en el Área Metropolitana de Buenos Aires (Argentina

    Directory of Open Access Journals (Sweden)

    Rodolfo V. Bertoncello

    2016-07-01

    Full Text Available Este artículo aborda el tema de las ciudades como destino turístico, específicamente, en relación con las configuraciones y dinámicas metropolitanas. Se analiza el caso de la localidad de Tigre como destino turístico que, siendo parte constitutiva del Área Metropolitana de Buenos Aires, se oferta integrado al “destino turístico Buenos Aires”. El papel de la localidad turística en el contexto metropolitano es analizado a partir del reconocimiento de la escasez de estudios sobre el tema en esta escala. El análisis se enfoca en los procesos que desembocan en la configuración de la localidad como destino turístico, asumiendo que dicho carácter es resultado de acciones específicas, orientadas a adecuar el lugar a los requerimientos turísticos. Con esto, se cuestionan los difundidos enfoques que asumen, en forma naturalizada, la “vocación turística” de los lugares.

  6. Estudios etnobotánicos en la conurbación Buenos Aires-La Plata, Argentina: Productos de plantas medicinales introducidos por inmigrantes paraguayos

    Directory of Open Access Journals (Sweden)

    Julio A. Hurrell

    2016-01-01

    Full Text Available Este trabajo incluye resultados parciales de una línea de investigación en Etnobotánica urbana, que estudia los conocimientos locales sobre las plantas, sus partes y productos derivados en la conurbación Buenos Aires-La Plata. Se incluyen productos de plantas medicinales de reciente ingreso en el área de estudio a través de inmigrantes oriundos de Paraguay. Los productos corresponden a 10 especies: Achyrocline alata(“jateí-ka’á”, Baccharis gaudichaudiana (“jaguareté-ka’á”, Cuphea lysimachioides(“ysypó-peré”, Euphorbia serpens(“tupasý-kambý”, Genipa americana(“ñandypá”, Helietta apiculata(“yvyra ovy”, Lycopodiella cernnua(“itápotý”, Rhynchosia balansae(“urusú-he’ě”, Stevia rebaudiana(“ka’á-he’ě” y Victoria cruziana(“jacaré-yrupé”. Para cada caso se indican sus productos, muestras de referencia, usos asignados, actividad biológica y efectos estudiados. La presencia de los productos de estas especies en el área metropolitana indica un aumento de la diversidad biocultural local, tanto de plantas y productos como de sus conocimientos asociados.

  7. Turismo urbano en contexto metropolitano: Tigre como destino turístico en el Área Metropolitana de Buenos Aires (Argentina

    Directory of Open Access Journals (Sweden)

    Rodolfo V. Bertoncello

    2016-01-01

    Full Text Available Este artículo aborda el tema de las ciudades como destino turístico, específicamente, en relación con las configuraciones y dinámicas metropolitanas. Se analiza el caso de la localidad de Tigre como destino turístico que, siendo parte constitutiva del Área Metropolitana de Buenos Aires, se oferta integrado al “destino turístico Buenos Aires”. El papel de la localidad turística en el contexto metropolitano es analizado a partir del reconocimiento de la escasez de estudios sobre el tema en esta escala. El análisis se enfoca en los procesos que desembocan en la configuración de la localidad como destino turístico, asumiendo que dicho carácter es resultado de acciones específicas, orientadas a adecuar el lugar a los requerimientos turísticos. Con esto, se cuestionan los difundidos enfoques que asumen, en forma naturalizada, la “vocación turística” de los lugares.

  8. Factores predictivos de la no adherencia al tratamiento de la tuberculosis en municipios del Área Metropolitana de Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Silvina Arrossi

    2012-01-01

    Full Text Available El objetivo de este estudio fue identificar las características sociodemográficas de los pacientes y las características del tratamiento que influyen en la no-adherencia al tratamiento antituberculoso. Se realizó un estudio de corte transversal, en el Área Metropolitana de Buenos Aires. Se encuestaron 38 pacientes que no adhirieron al tratamiento y 85 pacientes que adhirieron al tratamiento, diagnosticados durante el año 2007, residentes y atendidos en hospitales de municipios seleccionados. El análisis de los factores se llevó a cabo mediante regresión logística. Los resultados indican que los pacientes con viviendas sin agua, tuvieron 3 veces más probabilidad de no adherencia (OR=2,8; IC95% 1,1-6,9. Asimismo, los pacientes que realizaban los controles en un hospital tuvieron 3 veces más riesgo de no adherir que los que los realizaban en centros de atención primaria (OR=3,2; IC95% 1,1-8,9. Estos resultados permiten delinear un perfil de paciente en riesgo de no-adherencia, caracterizado por estar en condiciones de pobreza, y con dificultades de acceso a la atención de su salud.

  9. 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...

  10. 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)

  11. 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 ...

  12. Association between exposure to ambient air pollution and renal function in Korean adults.

    Science.gov (United States)

    Kim, Hyun-Jin; Min, Jin-Young; Seo, Yong-Seok; Min, Kyoung-Bok

    2018-01-01

    Ambient air pollution has a negative effect on many diseases, such as cardiovascular and respiratory diseases. Recent studies have reported a relationship between air pollution and renal function, but the results were limited to exposure to particulate matter (PM). This study was to identify associations between various air pollutants and renal function among Korean adults. Nationwide survey data for a total of 24,407 adults were analyzed. We calculated the estimated glomerular filtration rate (eGFR) for each individual to assess their renal function and used this to categorize those with chronic kidney disease (CKD). To evaluate exposure to ambient air pollution, we used the annual mean concentrations of four ambient air pollutants: PM with an aerodynamic diameter ≤ 10 μm (PM 10 ), nitrogen dioxide (NO 2 ), sulfur dioxide (SO 2 ), and carbon monoxide (CO). We identified significant inverse relationships between the air pollutants PM 10 and NO 2 and eGFR in all statistical adjustment models (all p  ambient air pollutants were significantly related to an increased risk of CKD in the unadjusted model ( p   0.05). Exposures to PM 10 and NO 2 were significantly associated with decreases in eGFR levels, but not CKD, in Korean adults.

  13. Assessment of internal contamination problems associated with bioregenerative air/water purification systems

    Science.gov (United States)

    Johnson, Anne H.; Bounds, B. Keith; Gardner, Warren

    1990-01-01

    The emphasis is to characterize the mechanisms of bioregenerative revitalization of air and water as well as to assess the possible risks associated with such a system in a closed environment. Marsh and aquatic plants are utilized for purposes of wastewater treatment as well as possible desalinization and demineralization. Foliage plants are also being screened for their ability to remove toxic organics from ambient air. Preliminary test results indicate that treated wastewater is typically of potable quality with numbers of pathogens such as Salmonella and Shigella significantly reduced by the artificial marsh system. Microbiological analyses of ambient air indicate the presence of bacilli as well as thermophilic actinomycetes.

  14. Hongos patógenos de insectos en Argentina (Zygomycetes: Entomophthorales

    Directory of Open Access Journals (Sweden)

    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.

  15. China y Argentina: "Oportunidades y desafíos", o cristalización de una asociación dependiente | China and Argentina: opportunities and challenges or the result of a dependent association

    Directory of Open Access Journals (Sweden)

    Pablo Alejandro NACHT

    2012-06-01

    Full Text Available El presente artículo tiene como objetivo central realizar un análisis del proceso de vinculación y articulación de los diferentes actores argentinos con la República Popular China. Se busca entender el rol de las fracciones del bloque en el poder (burguesía rural, burguesía industrial nacional relevantes en la vinculación con China en el período planteado. El trabajo abarca desde 2002 hasta 2007 y da cuenta del cambio del régimen de acumulación capitalista, evidenciando una nueva configuración de fuerzas dentro del bloque y que encuentra, en la relación argentina con el gigante asiático, un socio destacado. Los sectores agroexportadores y las petroleras se erigen como las más beneficiadas en esta vinculación, al tiempo que la burguesía mercado internista menos competitiva presiona para frenar la entrada de manufacturas chinas. El estado argentino, lejos de ser un actor neutral, recibe importantes recursos por lo recaudado como derechos de exportación y es utilizado por el Gobierno; plasmándose de esta manera un escenario de tensiones y pujas entre los sectores, al tiempo que se cristaliza un modelo neo-extractivista con el monocultivo de soja transgénica como commoditie de exportación.This research article focus on the process of vinculation and coordination between different argentinian actors and China. It seeks to understand the role of the fractions of the power bloc (rural bourgeoisie, national industrial bourgeoisie, etc. relevant to the relationship with China in the period stated. The work ranges from 2002 to 2007 and shows the capitalist accumulation regime´s change, showing a new configuration of forces within the bloc and the relationship with the asian giant as leading partner. The agro-exporters and oil sectors stand as the main beneficiaries in this relationship, while the national industrial bourgeoisie pressed to stem the flow of Chinese products. The argentine state far from being a neutral actor, receives

  16. Deep venous thrombosis associated with corporate air travel.

    Science.gov (United States)

    Dimberg, L A; Mundt, K A; Sulsky, S I; Liese, B H

    2001-01-01

    Deep venous thrombosis (DVT) is commonly seen among bedridden and postoperative patients. Its association with travel may also make DVT an occupational health risk to otherwise healthy business travelers. We estimated the incidence of and risk factors for DVT among 8,189 World Bank employees and a subset of 4,951 international business travelers. Occurrence of DVT between 1995 and 1998 was determined using 1) medical insurance claims; 2) Workers' Compensation claims; and 3) intra-office E-mail solicitation followed by interview. For each insurance claim case, 10 controls were randomly selected from among World Bank employees insured during the same month and year as the case's claim was filed, and case-control analyses were performed to identify potential predictors or risk factors for DVT. Thirty individuals filed claims for DVT of the legs (annual incidence rate: 0.9 per 1,000 employees); three of these claims were filed within 30 days after a travel mission. Two employees reported DVT as a Workers' Compensation injury, and five staff with verified DVT participated in interviews. After controlling for age and gender, no association with any travel-related covariate was seen. Results of analyses considering all thrombophlebitis and thromboembolism followed the same pattern. The average annual incidence of DVT occurring within 30 days of mission among traveling staff ranged from 0.10 per 1,000 to 0.25 per 1,000 travelers, depending on the case-finding method. No association between DVT and travel was observed after adjustment for gender and age. These results, however, are preliminary, and due to the rarity of DVT, based on small numbers.

  17. Determination of metals in air samples using X-Ray fluorescence associated the APDC preconcentration technique

    Energy Technology Data Exchange (ETDEWEB)

    Nardes, Raysa C.; Santos, Ramon S.; Sanches, Francis A.C.R.A.; Gama Filho, Hamilton S.; Oliveira, Davi F.; Anjos, Marcelino J., E-mail: rc.nardes@gmail.com, E-mail: ramonziosp@yahoo.com.br, E-mail: francissanches@gmail.com, E-mail: hamiltongamafilho@hotmail.com, E-mail: davi.oliveira@uerj.br, E-mail: marcelin@uerj.br [Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, RJ (Brazil). Instituto de Fisica. Departamento de Fisica Aplicada e Termodinamica

    2015-07-01

    Air pollution has become one of the leading quality degradation factors of life for people in large urban centers. Studies indicate that the suspended particulate matter in the atmosphere is directly associated with risks to public health, in addition, it can cause damage to fauna, flora and public / cultural patrimonies. The inhalable particulate materials can cause the emergence and / or worsening of chronic diseases related to respiratory system and other diseases, such as reduced physical strength. In this study, we propose a new method to measure the concentration of total suspended particulate matter (TSP) in the air using an impinger as an air cleaning apparatus, preconcentration with APDC and Total Reflection X-ray Fluorescence technique (TXRF) to analyze the heavy metals present in the air. The samples were collected from five random points in the city of Rio de Janeiro/Brazil. Analyses of TXRF were performed at the Brazilian Synchrotron Light Laboratory (LNLS). The technique proved viable because it was able to detect five important metallic elements to environmental studies: Cr, Fe, Ni, Cu and Zn. This technique presented substantial efficiency in determining the elementary concentration of air pollutants, in addition to low cost. It can be concluded that the metals analysis technique in air samples using an impinger as sample collection instrument associated with a complexing agent (APDC) was viable because it is a low-cost technique, moreover, it was possible the detection of five important metal elements in environmental studies associated with industrial emissions and urban traffic. (author)

  18. Determination of metals in air samples using X-Ray fluorescence associated the APDC preconcentration technique

    International Nuclear Information System (INIS)

    Nardes, Raysa C.; Santos, Ramon S.; Sanches, Francis A.C.R.A.; Gama Filho, Hamilton S.; Oliveira, Davi F.; Anjos, Marcelino J.

    2015-01-01

    Air pollution has become one of the leading quality degradation factors of life for people in large urban centers. Studies indicate that the suspended particulate matter in the atmosphere is directly associated with risks to public health, in addition, it can cause damage to fauna, flora and public / cultural patrimonies. The inhalable particulate materials can cause the emergence and / or worsening of chronic diseases related to respiratory system and other diseases, such as reduced physical strength. In this study, we propose a new method to measure the concentration of total suspended particulate matter (TSP) in the air using an impinger as an air cleaning apparatus, preconcentration with APDC and Total Reflection X-ray Fluorescence technique (TXRF) to analyze the heavy metals present in the air. The samples were collected from five random points in the city of Rio de Janeiro/Brazil. Analyses of TXRF were performed at the Brazilian Synchrotron Light Laboratory (LNLS). The technique proved viable because it was able to detect five important metallic elements to environmental studies: Cr, Fe, Ni, Cu and Zn. This technique presented substantial efficiency in determining the elementary concentration of air pollutants, in addition to low cost. It can be concluded that the metals analysis technique in air samples using an impinger as sample collection instrument associated with a complexing agent (APDC) was viable because it is a low-cost technique, moreover, it was possible the detection of five important metal elements in environmental studies associated with industrial emissions and urban traffic. (author)

  19. Age-Associated Decline in Thymic B Cell Expression of Aire and Aire-Dependent Self-Antigens

    Directory of Open Access Journals (Sweden)

    Sergio Cepeda

    2018-01-01

    Full Text Available Although autoimmune disorders are a significant source of morbidity and mortality in older individuals, the mechanisms governing age-associated increases in susceptibility remain incompletely understood. Central T cell tolerance is mediated through presentation of self-antigens by cells constituting the thymic microenvironment, including epithelial cells, dendritic cells, and B cells. Medullary thymic epithelial cells (mTECs and B cells express distinct cohorts of self-antigens, including tissue-restricted self-antigens (TRAs, such that developing T cells are tolerized to antigens from peripheral tissues. We find that expression of the TRA transcriptional regulator Aire, as well as Aire-dependent genes, declines with age in thymic B cells in mice and humans and that cell-intrinsic and cell-extrinsic mechanisms contribute to the diminished capacity of peripheral B cells to express Aire within the thymus. Our findings indicate that aging may diminish the ability of thymic B cells to tolerize T cells, revealing a potential mechanistic link between aging and autoimmunity.

  20. Air

    International Nuclear Information System (INIS)

    Gugele, B.; Scheider, J.; Spangl, W.

    2001-01-01

    In recent years several regulations and standards for air quality and limits for air pollution were issued or are in preparation by the European Union, which have severe influence on the environmental monitoring and legislation in Austria. This chapter of the environmental control report of Austria gives an overview about the legal situation of air pollution control in the European Union and in specific the legal situation in Austria. It gives a comprehensive inventory of air pollution measurements for the whole area of Austria of total suspended particulates, ozone, volatile organic compounds, nitrogen oxides, sulfur dioxide, carbon monoxide, heavy metals, benzene, dioxin, polycyclic aromatic hydrocarbons and eutrophication. For each of these pollutants the measured emission values throughout Austria are given in tables and geographical charts, the environmental impact is discussed, statistical data and time series of the emission sources are given and legal regulations and measures for an effective environmental pollution control are discussed. In particular the impact of fossil-fuel power plants on the air pollution is analyzed. (a.n.)

  1. Transport of Co-60 from Argentina to abroad

    International Nuclear Information System (INIS)

    Cesario, R.; Pinamonti, M.

    1993-01-01

    The Co-60 bearing wastes from the Embalse Nuclear Power Plant, Argentina are transported to Canada, the United States and Mexico. Ocean transportation, terrestrial transportation, air transportation are applied, and the total activity in bulk material shipped reached 2.96x10 17 Bq. (J.P.N.)

  2. Estrategias de recuperacion y conservacion de entierros humanos en el sitio paso alsina 1 (curso inferior del Río Colorado, prov. de Buenos Aires,Argentina

    Directory of Open Access Journals (Sweden)

    Martínez, Gustavo Adolfo

    2009-01-01

    Full Text Available En este trabajo se describen los procedimientos aplicados en el rescate, conservación y almacenaje de la colección bioarqueológica del sitio Paso Alsina 1 (Pdo. de Patagones, Prov. de Buenos Aires. Se recuperaron 10 entierros secundarios múltiples en un área de aproximadamente 6 m2. Análisis cuantitativos indicaron la presencia de ca. 3500 unidades anatómicas, correspondientes a un NMI de 56 individuos, representados por ambos sexos y diferentes categorías etarias. El hallazgo fortuito del sitio y la complejidad de la estructura funeraria datada en ca. 500 años AP llevaron a tomar una serie de decisiones metodológicas y técnicas ligadas al rescate de los entierros. Trabajos de laboreo con maquinarias agrícolas dejaron unidades anatómicas parcialmente expuestas y fragmentadas sobre la superficie del terreno. A partir de los hallazgos se desarrollaron tres campañas de excavación en el lapso de un año, recuperándose la totalidad de las inhumaciones. Durante los trabajos de campo se realizaron tareas de conservación preventivas (cobertura de los entierros por excavar y actividades de intervención (uso de consolidantes como resina de acetato de polivinilo o PVAc. En la mayoría de los casos, se procedió a la extracción de huesos individuales y cuando fue posible, los entierros se recuperaron en bloques. En el laboratorio se llevaron a cabo tareas de conservación y restauración de los elementos óseos. Actualmente, la muestra se encuentra acondicionada y almacenada, en bolsas y cajas libres de ácido, en gabinetes móviles dentro de un depósito con condiciones de temperatura y humedad estables. Esta serie de procedimientos permitió mantener la integridad del registro óseo para su posterior estudio bioarqueológico.

  3. Prevalence and characteristics of paratracheal air cysts and their association with emphysema in a general population

    Energy Technology Data Exchange (ETDEWEB)

    Cheng, Hua-Ming, E-mail: moyercheng@gmail.com [Department of Medical Imaging, Chi-Mei Medical Center, No. 901, Chung Hwa Road, Yong-Kang, Tainan 710, Taiwan (China); Chang, Pau-Yang, E-mail: pausheng@gmail.com [Department of Medical Imaging, Buddhist Tzu Chi General Hospital, No. 707, Section 3, Chung Yang Road, Hualien, Taiwan (China); Tzu Chi University, Hualien, Taiwan (China); Chiang, Kuo-Hsien, E-mail: moyer20361@yahoo.com.tw [Department of Medical Imaging, Buddhist Tzu Chi General Hospital, No. 707, Section 3, Chung Yang Road, Hualien, Taiwan (China); Tzu Chi University, Hualien, Taiwan (China); Huang, Hsin-Wen, E-mail: hwhuang660@gmail.com [Department of Diagnostic Radiology, Mennonite Christian Hospital, 44 Min-chuan Road, Hualien 970, Taiwan (China); Lee, Chau-Chin, E-mail: moyermiming@yahoo.com.tw [Department of Medical Imaging, Buddhist Tzu Chi General Hospital, No. 707, Section 3, Chung Yang Road, Hualien, Taiwan (China); Tzu Chi University, Hualien, Taiwan (China)

    2012-10-15

    Background: To evaluate the prevalence and characteristics of paratracheal air cysts and their association with emphysema and gender in a general population using low-dose computed tomography scanning of the chest. Materials and methods: We retrospectively enrolled a total of 924 patients (584 women, 340 men; mean age, 59.73 years; range, 37–89 years) who had received low-dose computed tomography scanning for health examination during the period January 1, 2010 to June 30, 2010. Computed tomographic images were evaluated for the presence of paratracheal air cysts. If paratracheal air cysts were identified, the lungs were reconstructed as a three-dimensional model on a commercial workstation. An emphysema index, an objective quantification of the extent of emphysematous changes on CT imaging, was defined as the percentage area of lung with attenuation values below −950 Hounsfield units. Results: A total of 60 patients with paratracheal air cysts were included in this study (estimated prevalence, 6.5%; 12 men, 48 women; mean age, 59.85; range 45–89 years). Emphysema index differed significantly between genders (P < 0.0001). The prevalence of paratracheal air cysts in men was significantly lower than that in women (P = 0.005); however, the emphysema index in patients of both genders showed no evidence of emphysema. The majority (95%) of paratracheal air cysts were at the level of the seventh cervical to the second thoracic vertebrae. Conclusion: The presence of paratracheal air cysts is a common condition in general populations and should not be misdiagnosed as abnormal paratracheal free air. Paratracheal air cysts are more common in woman than in man. In our study, there is no patient with paratracheal air cysts has CT evidence of emphysema.

  4. Prevalence and characteristics of paratracheal air cysts and their association with emphysema in a general population

    International Nuclear Information System (INIS)

    Cheng, Hua-Ming; Chang, Pau-Yang; Chiang, Kuo-Hsien; Huang, Hsin-Wen; Lee, Chau-Chin

    2012-01-01

    Background: To evaluate the prevalence and characteristics of paratracheal air cysts and their association with emphysema and gender in a general population using low-dose computed tomography scanning of the chest. Materials and methods: We retrospectively enrolled a total of 924 patients (584 women, 340 men; mean age, 59.73 years; range, 37–89 years) who had received low-dose computed tomography scanning for health examination during the period January 1, 2010 to June 30, 2010. Computed tomographic images were evaluated for the presence of paratracheal air cysts. If paratracheal air cysts were identified, the lungs were reconstructed as a three-dimensional model on a commercial workstation. An emphysema index, an objective quantification of the extent of emphysematous changes on CT imaging, was defined as the percentage area of lung with attenuation values below −950 Hounsfield units. Results: A total of 60 patients with paratracheal air cysts were included in this study (estimated prevalence, 6.5%; 12 men, 48 women; mean age, 59.85; range 45–89 years). Emphysema index differed significantly between genders (P < 0.0001). The prevalence of paratracheal air cysts in men was significantly lower than that in women (P = 0.005); however, the emphysema index in patients of both genders showed no evidence of emphysema. The majority (95%) of paratracheal air cysts were at the level of the seventh cervical to the second thoracic vertebrae. Conclusion: The presence of paratracheal air cysts is a common condition in general populations and should not be misdiagnosed as abnormal paratracheal free air. Paratracheal air cysts are more common in woman than in man. In our study, there is no patient with paratracheal air cysts has CT evidence of emphysema

  5. Late Oligocene-Early Miocene compressional tectosedimentary episode and associated land-mammal faunas in the Andes of central Chile and adjacent Argentina (32 37°s)

    Science.gov (United States)

    Semper, Thierry; Marshall, Larry G.; Rivano, Sergio; Godoy, Estanislao

    1994-01-01

    A reassessment of the geologic and land-mammal fossil evidence used in attribution of a tectosedimentary episode in the Andes between 32 and 37°S to the Middle Eocene "Incaic tectonic phase" of Peru indicates that the episode occurred during Late Oligocene-Early Miocene times(~ 27-20 Ma). From west to east, three structural domains are recognized for this time span in the study area: a volcanic arc (Chile); a thin-skinned, E-verging fold-thrust belt (Cordillera Principal, Chile-Argentina border strip); and a foreland basin (Argentina). Initiation of thrusting in the Cordillera Principal fold-thrust belt produced the coeval initiation of sedimentation in the foreland basin of adjacent Argentina. This onset of foreland deposition postdates strata bearing a Divisaderan Land Mammal Age fauna (i.e. ~ 35-30 Ma) and is marked at ~ 36°30'S by the base of the "Rodados Lustrosos" conglomerates, which are conformably overlain by sedimentary rocks containing a Deseadan Land Mammal Age fauna (i.e. ~ 29-21 Ma). Geologic relationships between the thick volcanic Abanico (Coya-Machalí) and Farellones formations also demonstrate that this tectosedimentary episode practically ended at ~ 20 Ma at least in the volcanic arc, and was therefore roughly coeval with the major tectonic crisis (~ 27-19 Ma) known in northwestern Andean Bolivia some 1500 km to the north. This strongly suggests that a long, outstanding tectonic upheaval affected at least an extended 12-37°S segment of the Andean margin of South America during Late Oligocene and Early Miocene times.

  6. The blue land planarian Caenoplana coerulea, an invader in Argentina La planaria terrestre azul Caenoplana coerulea, un invasor en Argentina

    Directory of Open Access Journals (Sweden)

    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.

  7. Epidemiology of chronic disease related to arsenic in Argentina: A systematic review

    International Nuclear Information System (INIS)

    Bardach, Ariel Esteban; Ciapponi, Agustin; Soto, Natalie; Chaparro, Martin R.; Calderon, Maria; Briatore, Agustina; Cadoppi, Norma; Tassara, Roberto; Litter, Marta I.

    2015-01-01

    Four million people in Argentina are exposed to arsenic contamination from drinking waters of several center-northern provinces. A systematic review to examine the geographical distribution of arsenic-related diseases in Argentina was conducted, searching electronic databases and gray literature up to November 2013. Key informants were also contacted. Of the 430 references identified, 47 (mostly cross-sectional and ecological designs) referred to arsenic concentration in water and its relationship with the incidence and mortality of cancer, dermatological diseases and genetic disorders. A high percentage of the water samples had arsenic concentrations above the WHO threshold value of 10 μg/L, especially in the province of Buenos Aires. The median prevalence of arsenicosis was 2.6% in exposed areas. The proportion of skin cancer in patients with arsenicosis reached 88% in case-series from the Buenos Aires province. We found higher incidence rate ratios per 100 μg/L increment in inorganic arsenic concentration for colorectal, lung, breast, prostate and skin cancer, for both genders. Liver and skin cancer mortality risk ratios were higher in regions with medium/high concentrations than in those with low concentrations. The relative risk of mortality by skin cancer associated to arsenic exposure in the province of Buenos Aires ranged from 2.5 to 5.2. In the north of this province, high levels of arsenic in drinking water were reported; however, removal interventions were scarcely documented. Arsenic contamination in Argentina is associated with an increased risk of serious chronic diseases, including cancer, showing the need for adequate and timely actions. - Highlights: • Arsenic content in Argentina was associated with increased risk of chronic diseases. • The median arsenicosis prevalence was 2.6% in exposed areas. • The relative risk of mortality by skin cancer was 2.5 to 5.2 in affected areas. • The median percentage of water samples above the cut

  8. Epidemiology of chronic disease related to arsenic in Argentina: A systematic review

    Energy Technology Data Exchange (ETDEWEB)

    Bardach, Ariel Esteban, E-mail: abardach@iecs.org.ar [Institute for Clinical Effectiveness and Health Policy, Buenos Aires (Argentina); Ciapponi, Agustin; Soto, Natalie; Chaparro, Martin R.; Calderon, Maria [Institute for Clinical Effectiveness and Health Policy, Buenos Aires (Argentina); Briatore, Agustina [Hospital Italiano, Buenos Aires (Argentina); Cadoppi, Norma; Tassara, Roberto [Foro Estratégico para el Desarrollo Nacional (Argentina); Litter, Marta I. [National Atomic Energy Commission, National Scientific and Technical Research Council (Argentina)

    2015-12-15

    Four million people in Argentina are exposed to arsenic contamination from drinking waters of several center-northern provinces. A systematic review to examine the geographical distribution of arsenic-related diseases in Argentina was conducted, searching electronic databases and gray literature up to November 2013. Key informants were also contacted. Of the 430 references identified, 47 (mostly cross-sectional and ecological designs) referred to arsenic concentration in water and its relationship with the incidence and mortality of cancer, dermatological diseases and genetic disorders. A high percentage of the water samples had arsenic concentrations above the WHO threshold value of 10 μg/L, especially in the province of Buenos Aires. The median prevalence of arsenicosis was 2.6% in exposed areas. The proportion of skin cancer in patients with arsenicosis reached 88% in case-series from the Buenos Aires province. We found higher incidence rate ratios per 100 μg/L increment in inorganic arsenic concentration for colorectal, lung, breast, prostate and skin cancer, for both genders. Liver and skin cancer mortality risk ratios were higher in regions with medium/high concentrations than in those with low concentrations. The relative risk of mortality by skin cancer associated to arsenic exposure in the province of Buenos Aires ranged from 2.5 to 5.2. In the north of this province, high levels of arsenic in drinking water were reported; however, removal interventions were scarcely documented. Arsenic contamination in Argentina is associated with an increased risk of serious chronic diseases, including cancer, showing the need for adequate and timely actions. - Highlights: • Arsenic content in Argentina was associated with increased risk of chronic diseases. • The median arsenicosis prevalence was 2.6% in exposed areas. • The relative risk of mortality by skin cancer was 2.5 to 5.2 in affected areas. • The median percentage of water samples above the cut

  9. 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

    Directory of Open Access Journals (Sweden)

    M. L. Gertiser

    2010-06-01

    Full Text Available Algunas especies del género Acanthamoeba provocan queratitis amebiana (QA, una infección de la córnea muy dolorosa, generalmente unilateral, con compromiso importante de la visión. Se presenta el caso de una mujer de 31 años usuaria de lentes de contacto con hábitos inadecuados de higiene y conservación de las lentes. La paciente consultó por enrojecimiento y dolor intenso en el ojo derecho, de dos meses de evolución. Luego del examen oftalmológico y ante la sospecha de una etiología parasitaria se realizó una biopsia de la zona lesionada, que se destinó al análisis bacteriológico y parasitológico en el laboratorio. También se remitieron los líquidos de lavado y el estuche de las lentes. No se detectó crecimiento bacteriano en las muestras. Los cultivos para la búsqueda de Acanthamoeba resultaron positivos en todos los especímenes analizados. Las amebas aisladas fueron clasificadas morfológica y molecularmente como pertenecientes al género Acanthamoeba. El presente trabajo muestra el primer caso de queratitis por Acanthamoeba de la ciudad de Bahía Blanca identificado por el laboratorio mediante procedimientos de alto valor diagnóstico.Some species of the Acanthamoeba genus cause keratitis, a very painful, most likely unilateral corneal infection , associated with eye and vision impairment. We here present a case of a 31-year-old female patient, a regular user of soft contact lenses without good practices of lens hygiene and handling. The patient attended medical consultation after two months of inflammation and pain in her right eye. After ophthalmological studies, and due to suspicion of a parasitic infection, a biopsy was performed and the sample submitted for bacteriological and parasitological analyses. Moreover, contact lens holders and lens cleaning solutions were studied. The samples yielded negative results for bacterial infection. However, cultivation of all samples showed the presence of amoeboid parasites

  10. Tendencias del régimen de precipitación y el manejo sustentable de los agroecosistemas: estudio de un caso en el noroeste de la provincia de Buenos Aires, Argentina.

    Directory of Open Access Journals (Sweden)

    Silvia P. Pérez

    2006-05-01

    Full Text Available Durante las últimas décadas se ha tomado una creciente conciencia de la importancia del cambio climático sobre el manejo sustentable de los agroecosistemas. El abordaje de esta problemática requiere un enfoque interdisciplinario que puede hacerse a través de la metodología de estudio del caso. Un caso de estudio de notable interés se presenta en el noroeste de la Provincia de Buenos Aires, Argentina, donde el aumento en las precipitaciones permitió un incremento de la superficie dedicada a la agricultura en secano. Es importante dilucidar si dicho fenómeno constituye un cambio irreversible o forma parte de un ciclo de larga duración, con fases secas y húmedas, separadas por fases de transición. Pudo comprobarse que, aunque la teoría del ciclo de lluvias explica un mayor porcentaje de la varianza total de las series estudiadas, ambas teorías presentan una correlación significativa con los fenómenos observados por lo que no puede excluirse ninguna de las dos hipótesis. Si bien no se cuenta aún con evidencias suficientes como para demostrar la validez de una u otra teoría, deben preverse las decisiones estratégicas necesarias para producir en uno u otro ambiente como así también considerar las posibles consecuencias de un error de evaluación. Finalmente se concluye que en un escenario de incertidumbre, resulta preferible renunciar al máximo beneficio, y apuntar a una máxima seguridad de cosecha, eligiendo variedades, épocas de siembra, densidades, métodos de labranza, y todos los recursos tecnológicos disponibles para producir en un ambiente desfavorable, pues lo que podría causar una catástrofe productiva y ambiental no es que el régimen de precipitaciones sufra una disminución, sino que ésta tome desprevenido al sistema productivo sin que se hayan tomado las medidas necesarias para hacerle frente.

  11. Association between air pollution and cardiovascular mortality in Hefei, China: A time-series analysis.

    Science.gov (United States)

    Zhang, Chao; Ding, Rui; Xiao, Changchun; Xu, Yachun; Cheng, Han; Zhu, Furong; Lei, Ruoqian; Di, Dongsheng; Zhao, Qihong; Cao, Jiyu

    2017-10-01

    In recent years, air pollution has become an alarming problem in China. However, evidence on the effects of air pollution on cardiovascular mortality is still not conclusive to date. This research aimed to assess the short-term effects of air pollution on cardiovascular morbidity in Hefei, China. Data of air pollution, cardiovascular mortality, and meteorological characteristics in Hefei between 2010 and 2015 were collected. Time-series analysis in generalized additive model was applied to evaluate the association between air pollution and daily cardiovascular mortality. During the study period, the annual average concentration of PM 10, SO 2 , and NO 2 was 105.91, 20.58, and 30.93 μg/m 3 , respectively. 21,816 people (including 11,876 man, and 14,494 people over 75 years of age) died of cardiovascular diseases. In single pollutant model, the effects of multi-day exposure were greater than single-day exposure of the air pollution. For every increase of 10 μg/m 3 in SO 2 , NO 2 , and PM 10 levels, CVD mortality increased by 5.26% (95%CI: 3.31%-7.23%), 2.71% (95%CI: 1.23%-4.22%), and 0.68% (95%CI: 0.33%-1.04%) at a lag03, respectively. The multi-pollutant models showed that PM 10 and SO 2 remained associated with CVD mortality, although the effect estimates attenuated. However, the effect of NO 2 on CVD mortality decreased to statistically insignificant. Subgroup analyses further showed that women were more vulnerable than man upon air pollution exposure. These findings showed that air pollution could significantly increase the CVD mortality. Copyright © 2017 Elsevier Ltd. All rights reserved.

  12. 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...

  13. Cryptosporidium varanii infection in leopard geckos (Eublepharis macularius) in Argentina.

    Science.gov (United States)

    Dellarupe, A; Unzaga, J M; Moré, G; Kienast, M; Larsen, A; Stiebel, C; Rambeaud, M; Venturini, M C

    2016-01-01

    Cryptosporidiosis is observed in reptiles with high morbidity and considerable mortality. The objective of this study was to achieve the molecular identification of Cryptosporidium spp. in pet leopard geckos (Eublepharis macularius) from a breeder colony in Buenos Aires, Argentina. Oocysts comparable to those of Cryptosporidium spp. were detected in three geckos with a history of diarrhea, anorexia and cachexia. Molecular identification methods confirmed the presence of Cryptosporidium varanii (syn. C. saurophilum). This agent was considered to be the primary cause of the observed clinical disease. This is the first description of C. varanii infection in pet reptiles in Argentina.

  14. Cryptosporidium varanii infection in leopard geckos (Eublepharis macularius in Argentina

    Directory of Open Access Journals (Sweden)

    A. Dellarupe

    2016-06-01

    Full Text Available Cryptosporidiosis is observed in reptiles with high morbidity and considerable mortality. The objective of this study was to achieve the molecular identification of Cryptosporidium spp. in pet leopard geckos (Eublepharis macularius from a breeder colony in Buenos Aires, Argentina. Oocysts comparable to those of Cryptosporidium spp. were detected in three geckos with a history of diarrhea, anorexia and cachexia. Molecular identification methods confirmed the presence of Cryptosporidium varanii (syn. C. saurophilum. This agent was considered to be the primary cause of the observed clinical disease. This is the first description of C. varanii infection in pet reptiles in Argentina.

  15. 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)

  16. Caracterización de Typhlocybella maidica (Hemiptera: Cicadellidae y descripción del daño producido en plantas de maíz y gramíneas asociadas en la Argentina Characterization of Typhlocybella maidica (Hemiptera: Cicadellidae and description of the damage caused in maize plants and associated gramineous in Argentina

    Directory of Open Access Journals (Sweden)

    María E. Brentassi

    2010-06-01

    associated with damage to corn leaves. This finding prompted the first mention of the Typhlocybella Baker genus for Argentina, and also the description of a new species: Typhlocybella maidica Catalano. The objective was to describe the feeding damage caused by T. maidica on its host plants and to show its main characteristics for identification. T. maidica is recognized by its small size (3mm, brown-yellowish color with two lateral fuscous spots on its crown, forewings with orange and brown marks, and the typical short and active flight movement among host plants. The damage produced consisted in typical chlorotic areas arranged in zigzag, on both foliar epidermises. Microscopic examination revealed lost of chloroplasts in mesophyll and vascular bundle parenchymal sheath cells and changes in the morphology of the chloroplasts of the bundle sheath. Also, the presence of salivary deposits particularly in relation to phloem was observed. T. maidica feeds primarily from mesophyll cell contents using the cell rupturing feeding strategy. The high frequency of leaf injuries on maize stimulates the pursuit of new studies in order to evaluate the importance of the damages caused by this species, as well as to determine if they play a role in the health of the crop.

  17. 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)

  18. 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.

  19. Estructura vertical, temporal y espacial de las masas de aire extremas en la República Argentina en invierno Vertical, temporal and spatial structure of the extreme air masses in Argentine during winter

    Directory of Open Access Journals (Sweden)

    Alejandra S Coronel

    2006-12-01

    Full Text Available Se identificó la masa de aire a través de la temperatura potencial adiabática equivalente (θae en 850 hPa, en Resistencia, Ezeiza y Comodoro Rivadavia, en los inviernos del período 1959/1991. Se definieron las masas extremas frías y cálidas a partir del primer y último quintil de θae en 850 hPa., respectivamente, y se analizó el primer día de ocurrencia de estas masas: evento frío y evento cálido. La selección de eventos extremos realizada es un discriminante estadísticamente significativo en el comportamiento de los parámetros de superficie como temperatura, presión y humedad en diferentes horas del día. En los días previos y posteriores a la ocurrencia del evento frío se identificó: en superficie un máximo de presión, un mínimo de temperatura que ocurre el día del evento y una mayor probabilidad de precipitación previa a la ocurrencia del evento. En la tropósfera se manifestó un máximo enfriamiento y estabilización de la masa de aire a partir del día del evento. Con referencia al evento cálido se pudo identificar: en superficie un mínimo de presión y un máximo de temperatura y una mayor probabilidad de precipitación posterior a la ocurrencia del evento. En la tropósfera se observó el máximo calentamiento el día del evento.Using the potential equivalent adiabatic temperature in 850 hPa at Resistencia, Ezeiza y Comodoro Rivadavia the air mass is identified. Extreme cold and warm air masses were defined, both identified using quantiles classification of θae at 850 hPa. The relationship of the values of θae at 850 hPa of extreme cold and warm air masses with surface parameters as temperature, pressure and humidity at different hours of the day is statistically significant using a discriminant analysis. The temporal evolution of the variables at surface as well as in the troposphere during the days before and after the occurrence of the cold event helped to identify that: on the surface a pressure maximum

  20. Poverty and Health in Argentina

    Directory of Open Access Journals (Sweden)

    Maria Alejandra Silva

    2009-06-01

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

  1. Health effects associated with passenger vehicles: monetary values of air pollution.

    Science.gov (United States)

    Marzouk, Mohamed; Madany, Magdy

    2012-01-01

    Air pollution is regarded as one of the highest priorities in environmental protection in both developed and developing countries. High levels of air pollution have adverse effects on human health that might cause premature death. This study presents the monetary value estimates for the adverse human health effects resulted from ambient air pollution. It aids decision makers to set priorities in the public health relevance of pollution abatement. The main driver of policymaker is the need to reduce the avoidable cardiopulmonary morbidity and mortality from pollutant exposures. The monetary valuation involves 2 steps: (i) relate levels of pollutants to mortality and morbidity (concentration-response relationships) and (ii) apply unit economic values. Cost of air pollution associated with passenger vehicles running over a major traffic bridge (6th of October Elevated Highway) is presented as a case study to demonstrate the use of monetary value of air pollution. The study proves that the cost of air pollution is extremely high and should not be overlooked.

  2. An association of particulate air pollution and traffic exposure with mortality after lung transplantation in Europe

    NARCIS (Netherlands)

    Ruttens, David; Verleden, Stijn E.; Bijnens, Esmee M.; Winckelmans, Ellen; Gottlieb, Jens; Warnecke, Gregor; Meloni, Federica; Morosini, Monica; van der Bij, Wim; Verschuuren, Erik A.; Sommerwerck, Urte; Weinreich, Gerhard; Kamler, Markus; Roman, Antonio; Gomez-Olles, Susana; Berastegui, Cristina; Benden, Christian; Holm, AreMartin; Iversen, Martin; Schultz, Hans Henrik; Luijk, Bart; Oudijk, Erik-Jan; Erp, Johanna M. Kwakkel-van; Jaksch, Peter; Klepetko, Walter; Kneidinger, Nikolaus; Neurohr, Claus; Corris, Paul. A.; Fisher, Andrew J.; Lordan, James; Meachery, Gerard; Piloni, Davide; Vandermeulen, Elly; Bellon, Hannelore; Hoffmann, Barbara; Vienneau, Danielle; Hoek, Gerard; de Hoogh, Kees; Nemery, Benoit; Verleden, Geert M.; Vos, Robin; Nawrot, Tims.; Vanaudenaerde, Bart M.

    2017-01-01

    Air pollution from road traffic is a serious health risk, especially for susceptible individuals. Single-centre studies showed an association with chronic lung allograft dysfunction (CLAD) and survival after lung transplantation, but there are no large studies. 13 lung transplant centres in 10

  3. Time Scale Effects in Acute Association between Air-Pollution and Mortality

    Science.gov (United States)

    We used wavelet analysis and generalized additive models (GAM) to study timescale effects in the acute association between mortality and air-pollution. Daily averages of measured NO2 concentrations in the metropolitan Paris area are used as indicators of human exposure...

  4. Differential susceptibility according to gender in the association between air pollution and mortality from respiratory diseases

    OpenAIRE

    Oliveira,Marcio Sacramento de; Leon,Antônio Ponce de; Mattos,Inês Echenique; Koifman,Sérgio

    2011-01-01

    This study analyzed the association between air pollution and deaths from respiratory diseases, considering differential susceptibility according to gender. The authors used daily deaths from respiratory diseases (ICD-10, J00-J99), PM10, SO2, and O3 levels, and meteorological indicators in Volta Redonda, Rio de Janeiro State, Brazil, from January 2002 to December 2006. The association was estimated by Poisson regression using generalized additive models, where the increase in risk of deaths f...

  5. [A Meta analysis on the associations between air pollution and respiratory mortality in China].

    Science.gov (United States)

    Liu, Changjing; Huang, Fei; Yang, Zhizhou; Sun, Zhaorui; Huang, Changbao; Liu, Hongmei; Shao, Danbing; Zhang, Wei; Ren, Yi; Tang, Wenjie; Han, Xiaoqin; Nie, Shinan

    2015-08-01

    To analyze the associations between air pollution and adverse health outcomes on respiratory diseases and to estimate the short-term effects of air pollutions [Particulate matter with particle size below 10 microns (PM(10)), PM(10) particulate matter with particle size below 2.5 microns (PM(2.5)), nitrogen dioxide (NO₂), sulphur dioxide (SO₂) and ozone (O₃)] on respiratory mortality in China. Data related to the epidemiological studies on the associations between air pollution and adverse health outcomes of respiratory diseases that published from 1989 through 2014 in China, were collected by systematically searching databases of PubMed, SpringerLink, Embase, Medline, CNKI, CBM and VIP in different provinces of China. Short-term effects between (PM(10), PM(2.5), NO₂, SO₂, O₃) and respiratory mortality were analyzed by Meta-analysis method, and estimations were pooled by random or fixed effect models, using the Stata 12.0 software. A total of 157 papers related to the associations between air pollution and adverse health outcomes of respiratory diseases in China were published, which covered 79.4% of all the provinces in China. Results from the Meta-analysis showed that a 10 µg/m³ increase in PM10, PM(2.5), NO₂, SO₂, and O₃was associated with mortality rates as 0.50% (95% CI: 0-0.90%), 0.50% (95% CI: 0.30%-0.70%), 1.39% (95% CI: 0.90%-1.78%), 1.00% (95% CI: 0.40%-1.59%) and 0.10% (95% CI: -1.21%-1.39%) in respiratory tracts, respectively. No publication bias was found among these studies. There seemed positive associations existed between PM(10)/PM(2.5)/NO₂/SO₂and respiratory mortality in China that the relationship called for further attention on air pollution and adverse health outcomes of the respiratory diseases.

  6. Sewage impact on the composition and distribution of Polychaeta associated to intertidal mussel beds of the Mar del Plata rocky shore, Argentina

    Directory of Open Access Journals (Sweden)

    Elías Rodolfo

    2003-01-01

    Full Text Available The polychaete composition and distribution within mussel beds were studied in order to assess organic pollution due to domestic sewage in a rocky shore of Mar del Plata (Argentina during 1997. Four stations and a control site were randomly sampled around the local effluent. Quantitative data on polychaetes, as well as sediment accumulated among mussels and its organic carbon content were measured. Polychaete distribution patterns are related to the organic matter gradient, being Capitella cf. capitata, Neanthes succinea (Frey & Leuckart, 1847 and Boccardia polybranchia (Haswell, 1885 the dominant indicator species close to the effluent. At medial distances, the cirratulids Caulleriella alata (Southern, 1914 and Cirratulus cirratus (Müller, 1776 are very important in abundance. The syllids Syllis prolixa Ehlers, 1901 and S. gracilis Grube, 1840 are distributed along the study area, but dominate at the medial stations and at the control site. The orbiniid Protoariciella uncinata Hartmann-Schröder, 1962 is subdominant at the control station.

  7. La mortalidad por armas de fuego en Argentina entre 1990 y 2008 Firearm mortality in Argentina, 1990-2008

    Directory of Open Access Journals (Sweden)

    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

  8. Measurements of atmospheric fallout in Argentina; Determinacion del fallout atmosferico en la Republica Argentina

    Energy Technology Data Exchange (ETDEWEB)

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

    1998-11-01

    With the purpose of studying the radioactive fallout present in Argentina from atmospheric nuclear explosions tests that have been conducted recently, an environmental monitoring program, outside the influence of nuclear facilities of Argentina, was undertaken during 1996 and 1997. The levels of Cs-137 and Sr-90 were analysed in samples of air, deposited material (rainwater), milk, an average meal of a standard man and food. During this period, a total of 630 radiochemical analysis were performed on 325 samples of the different matrices described. The concentration levels of the radionuclides analysed in the different environmental matrices are presented and are compared with the values obtained in the environmental monitoring program done during the period 1960-1981. (author) 3 refs., 9 tabs. [Espanol] Con el proposito de estudiar la precipitacion radiactiva presente en la Republica Argentina, debido al ensayo de armas nucleares en la atmosfera realizadas en el pasado, se implemento el muestreo ambiental fuera de la zona de influencia de las instalaciones nucleares de la Argentina durante los anios 1996 y 1997. Se determinaron las concentraciones de cesio 137 y estroncio 90 en muestras de aire, deposito de material radiactivo (agua de lluvia), leche, dieta promedio de un individuo estandar y en alimentos varios. Se realizaron, durante el periodo mencionado, un total de 630 determinaciones radioquimicas sobre 325 muestras de las diferentes matrices mencionadas. Se presentan los niveles de concentracion de los radionucleidos analizados en las distintas matrices ambientales y se comparan los valores obtenidos en los monitoreos realizados durante el periodo 1960-1981. (autor)

  9. 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

  10. Association between respiratory prescribing, air pollution and deprivation, in primary health care.

    Science.gov (United States)

    Sofianopoulou, Eleni; Rushton, Stephen P; Diggle, Peter J; Pless-Mulloli, Tanja

    2013-12-01

    We investigated the association between respiratory prescribing, air quality and deprivation in primary health care. Most previous studies have used data from secondary and tertiary care to quantify air pollution effects on exacerbations of asthma and chronic obstructive pulmonary disease (COPD). However, these outcomes capture patients who suffer from relatively severe symptoms. This is a population-based ecological study. We analysed respiratory medication (salbutamol) prescribed monthly by 63 primary care practices, UK. Firstly, we captured the area-wide seasonal variation in prescribing. Then, using the area-wide variation in prescribing as an offset, we built a mixed-effects model to assess the remaining variation in relation to air quality and demographic variables. An increase of 10 μg/m(3) in ambient PM10 was associated with an increase of 1% (95% CI: 0.1-2%) in salbutamol prescribing. An increase of 1 SD in income and employment deprivation was associated with an increase of 20.5% (95% CI: 8.8-33.4%) and 14.7% (95% CI: 4.3-26.2%) in salbutamol prescribing rate, respectively. The study provides evidence that monthly respiratory prescribing in primary care is a useful indicator of the extent to which air pollution exacerbates asthma and COPD symptoms. Respiratory prescribing was higher on deprived populations.

  11. Polycyclic aromatic hydrocarbons associated with particles in ambient air from urban and industrial areas

    Energy Technology Data Exchange (ETDEWEB)

    Rehwagen, Martina; Mueller, Andrea; Herbarth, Olf [UFZ-Centre for Environmental Research Leipzig-Halle, Department of Human Exposure Research and Epidemiology, Permoserstr. 15, D 04318 Leipzig (Germany); Massolo, Laura; Ronco, Alicia [CIMA Centro de Investigaciones del Medio Ambiente, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 8 Calle 47 y 115, 1900 La Plata (Argentina)

    2005-09-15

    This study takes into consideration an analysis of the chemical polycyclic aromatic hydrocarbon (PAH) profile and its distribution in inhalable and respirable particulate matter in urban and industrial areas in La Plata, Argentina, and Leipzig, Germany. Representative samples from three locations in La Plata (industrial, traffic influenced and control area) and two locations in Leipzig (traffic influenced and control area) were obtained in summer and winter. The sampling of particulate matter was carried out with high volume collectors using cascade impactors to separate six size fractions. PAHs were extracted with hexane through a solid-liquid equilibrium extraction and analysed by HPLC/UV/fluorescence detection. The results showed a PAH seasonal behaviour in both regions, with lower contents in summer and higher ones in winter. Highest concentrations of total PAHs were found in the industrial area in La Plata. The size distribution of particles demonstrates the greater relevance of smaller particles. More than 50% of PAHs were associated with particles of less than 0.49 {mu}m. Moreover, this particle size fraction was associated with traffic, whereas other sources of combustion were related also to particles between 0.49 and 0.95 {mu}m. Considering the ratio of benzo(ghi)perylene (BgP)/benzo(a)pyrene (BaP) as an indicator for traffic influence, it was observed that La Plata City was more affected than Leipzig by the same proportion in summer and in winter. The BgP/InP (indeno(123-cd)pyrene) ratio was lower in winter than in summer in both places and indicates the presence of domestic combustion sources. It is important to point out the significance of using fingerprint compound ratios to identify possible sources of pollution with PAHs bound to particles.

  12. Argentina chiama Italia: Friuli risponde

    Directory of Open Access Journals (Sweden)

    Silvana Serafin

    2010-03-01

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

  13. XXXVIII Annual meeting of the Argentine Association of Nuclear Technology (AATN 2011)

    International Nuclear Information System (INIS)

    2011-01-01

    The 38th Annual meeting of the Argentine Association of Nuclear Technology was organized by the AATN (Asociacion Argentina de Tecnologia Nuclear) in Buenos Aires, Argentine, between the 14 and 18 November of 2011. In this event 146 papers in 16 Sessions, with 13 Plenary Conferences and 3 Roundtables were presented. [es

  14. Association between Ambient Air Pollution and Diabetes Mellitus in Europe and North America: Systematic Review and Meta-Analysis

    OpenAIRE

    Eze, Ikenna C.; Hemkens, Lars G.; Bucher, Heiner C.; Hoffmann, Barbara; Schindler, Christian; K?nzli, Nino; Schikowski, Tamara; Probst-Hensch, Nicole M.

    2015-01-01

    Background Air pollution is hypothesized to be a risk factor for diabetes. Epidemiological evidence is inconsistent and has not been systematically evaluated. Objectives We systematically reviewed epidemiological evidence on the association between air pollution and diabetes, and synthesized results of studies on type 2 diabetes mellitus (T2DM). Methods We systematically searched electronic literature databases (last search, 29 April 2014) for studies reporting the association between air pol...

  15. 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)

  16. Association between ambient air pollution and pregnancy rate in women who underwent IVF.

    Science.gov (United States)

    Choe, S A; Jun, Y B; Lee, W S; Yoon, T K; Kim, S Y

    2018-04-05

    Are the concentrations of five criteria air pollutants associated with probabilities of biochemical pregnancy loss and intrauterine pregnancy in women? Increased concentrations of ambient particulate matter (PM10), nitrogen dioxide (NO2), carbon monoxide (CO) during controlled ovarian stimulation (COS) and after embryo transfer were associated with a decreased probability of intrauterine pregnancy. Exposure to high ambient air pollution was suggested to be associated with low fertility and high early pregnancy loss in women. Using a retrospective cohort study design, we analysed 6621 cycles of 4581 patients who underwent one or more fresh IVF cycles at a fertility centre from January 2006 to December 2014, and lived in Seoul at the time of IVF treatment. To estimate patients' individual exposure to air pollution, we computed averages of hourly concentrations of five air pollutants including PM10, NO2, CO, sulphur dioxide (SO2) and ozone (O3) measured at 40 regulatory monitoring sites in Seoul for each of the four exposure periods: period 1 (start of COS to oocyte retrieval), period 2 (oocyte retrieval to embryo transfer), period 3 (embryo transfer to hCG test), and period 4 (start of COS to hCG test). Hazard ratios (HRs) from the time-varying Cox-proportional hazards model were used to estimate probabilities of biochemical pregnancy loss and intrauterine pregnancy for an interquartile range (IQR) increase in each air pollutant concentration during each period, after adjusting for individual characteristics. We tested the robustness of the result using generalised linear mixed model, accounting for within-woman correlation. Mean age of the women was 35 years. Average BMI was 20.9 kg/m2 and the study population underwent 1.4 IVF cycles on average. Cumulative pregnancy rate in multiple IVF cycles was 51.3% per person. Survival analysis showed that air pollution during periods 1 and 3 was generally associated with IVF outcomes. Increased NO2 (adjusted HR = 0.93, 95% CI

  17. 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)

  18. Anomalías de circulación atmosférica en 500 y 1000 hpa asociada a la sequía producida en la Argentina durante enero de 2003 a marzo de 2004 Anomalies of the atmospheric circulation at 500 and 1000 hpa associated with the dry period in Argentina from january 2003 to march 2004

    Directory of Open Access Journals (Sweden)

    Adelia Perla Alessandro

    2008-03-01

    Full Text Available Neste trabalho se analisa e descreve a situação sinótica associada à precipitação e temperatura do território argentino durante o ano de 2003 e o primeiro trimestre de 2004. A escolha deste período obedece à falta de precipitações em pelo menos dez províncias argentinas, o que ocasionou grandes prejuízos econômicos no setor agropecuário. Com o intuito de determinar as causas deste déficit de precipitações foram analisados os campos médios de altura geopotencial nos níveis de 500 e 1000 hPa e suas anomalias. Em 2003, o déficit de precipitação se associa principalmente às anomalias de geopotencial no nível de 500 hPa, que mostram um fluxo dominante de SO que atravessa o país diagonalmente entre 45°S e 30°S. Em 1000 hPa o anticiclone subtropical do Atlântico se encontra enfraquecido, deslocado para o norte e afastado do continente, enquanto que o anticiclone subrtopical do Pacífico está mais intenso e deslocado para leste respeito da sua posição normal. No primeiro trimestre de 2004 a seca se deve principalmente à presença de uma crista no nível de 500 hPa posicionada no centro do país. As anomalias médias de temperatura do período considerado resultam positivas sobre toda a Argentina. Em 2003, essas anomalias se devem à contribuição do fluxo do N-NE desde o norte do país, à subsidência ocasionada pelo anticiclone do Pacífico mais deslocado para o interior do continente e a orografia. No primeiro trimestre de 2004 as anomalias se originam devido ao fluxo do norte e à freqüente circulação anticiclônica no Atlântico ao sul de 35°S.This paper analyzes and describes the synoptic situation associated with precipitation and temperature in Argentina during 2003 and the first quarter of 2004. The period was selected as during that time drought affected at least ten Argentine provinces, causing great agricultural and ranching losses. In order to find the causes of such rainfall deficit the mean and

  19. 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.

  20. Lower air temperature is associated with ambulance transports and death in Takamatsu area, Japan.

    Science.gov (United States)

    Mochimasu, Kazumi Dokai; Miyatake, Nobuyuki; Tanaka, Naoko; Kinoshita, Hiroshi

    2014-07-01

    The aim of this study was to investigate the linkage among ambulance transports, the number of death and air temperature in Takamatsu area, Japan. Monthly data of ambulance transports (total and acute disease) and the number of death from 2004 to 2012 were obtained from Fire Department Service in Takamatsu and Takamatsu city official website, Japan. Climate parameters for required period were also obtained from Japan Meteorological Agency. Population data in Takamatsu area were also used to adjust ambulance transports and the number of death. The linkage among ambulance transports, the number of death and climate parameters was evaluated by ecological analysis. Total ambulance transports (/a hundred thousand people/day) and ambulance transports due to acute disease (/a hundred thousand people/day) were 12.3 ± 0.9 and 6.8 ± 0.7, respectively. The number of death (/a hundred thousand people/day) was 2.5 ± 0.4. By quadratic curve, ambulance transports due to acute disease and the number of death were significantly correlated with the parameters of air temperature. However, the number of death was the highest in January and the lowest in August. Although higher air temperature was only associated with higher ambulance transports, lower air temperature was associated with both higher ambulance transports and the number death in Takamatsu area, Japan.

  1. Outbreaks associated to large open air festivals, including music festivals, 1980 to 2012.

    Science.gov (United States)

    Botelho-Nevers, E; Gautret, P

    2013-03-14

    In the minds of many, large scale open air festivals have become associated with spring and summer, attracting many people, and in the case of music festivals, thousands of music fans. These festivals share the usual health risks associated with large mass gatherings, including transmission of communicable diseases and risk of outbreaks. Large scale open air festivals have however specific characteristics, including outdoor settings, on-site housing and food supply and the generally young age of the participants. Outbreaks at large scale open air festivals have been caused by Cryptosporium parvum, Campylobacter spp., Escherichia coli, Salmonella enterica, Shigella sonnei, Staphylococcus aureus, hepatitis A virus, influenza virus, measles virus, mumps virus and norovirus. Faecal-oral and respiratory transmissions of pathogens result from non-compliance with hygiene rules, inadequate sanitation and insufficient vaccination coverage. Sexual transmission of infectious diseases may also occur and is likely to be underestimated and underreported. Enhanced surveillance during and after festivals is essential. Preventive measures such as immunisations of participants and advice on-site and via social networks should be considered to reduce outbreaks at these large scale open air festivals.

  2. Land cover and air pollution are associated with asthma hospitalisations: A cross-sectional study.

    Science.gov (United States)

    Alcock, Ian; White, Mathew; Cherrie, Mark; Wheeler, Benedict; Taylor, Jonathon; McInnes, Rachel; Otte Im Kampe, Eveline; Vardoulakis, Sotiris; Sarran, Christophe; Soyiri, Ireneous; Fleming, Lora

    2017-12-01

    There is increasing policy interest in the potential for vegetation in urban areas to mitigate harmful effects of air pollution on respiratory health. We aimed to quantify relationships between tree and green space density and asthma-related hospitalisations, and explore how these varied with exposure to background air pollution concentrations. Population standardised asthma hospitalisation rates (1997-2012) for 26,455 urban residential areas of England were merged with area-level data on vegetation and background air pollutant concentrations. We fitted negative binomial regression models using maximum likelihood estimation to obtain estimates of asthma-vegetation relationships at different levels of pollutant exposure. Green space and gardens were associated with reductions in asthma hospitalisation when pollutant exposures were lower but had no significant association when pollutant exposures were higher. In contrast, tree density was associated with reduced asthma hospitalisation when pollutant exposures were higher but had no significant association when pollutant exposures were lower. We found differential effects of natural environments at high and low background pollutant concentrations. These findings can provide evidence for urban planning decisions which aim to leverage health co-benefits from environmental improvements. Copyright © 2017 Elsevier Ltd. All rights reserved.

  3. 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 ...

  4. Burocracias penales, administración institucional de conflictos y ciudadanía: Experiencia comparada entre Brasil y Argentina

    OpenAIRE

    Marta Fernández Patallo

    2010-01-01

    TISCORNIA Sofía, KANT DE LIMA Roberto y EILBAUM, Lucía (comp.). 2009. Burocracias penales, administración institucional de conflictos y ciudadanía. Experiencia comparada entre Brasil y Argentina. Buenos Aires: Antropofagia.

  5. Determinants of perceived air pollution annoyance and association between annoyance scores and air pollution (PM 2.5, NO 2) concentrations in the European EXPOLIS study

    Science.gov (United States)

    Rotko, Tuulia; Oglesby, Lucy; Künzli, Nino; Carrer, Paolo; Nieuwenhuijsen, Mark J.; Jantunen, Matti

    Apart from its traditionally considered objective impacts on health, air pollution can also have perceived effects, such as annoyance. The psychological effects of air pollution may often be more important to well-being than the biophysical effects. Health effects of perceived annoyance from air pollution are so far unknown. More knowledge of air pollution annoyance levels, determinants and also associations with different air pollution components is needed. In the European air pollution exposure study, EXPOLIS, the air pollution annoyance as perceived at home, workplace and in traffic were surveyed among other study objectives. Overall 1736 randomly drawn 25-55-yr-old subjects participated in six cities (Athens, Basel, Milan, Oxford, Prague and Helsinki). Levels and predictors of individual perceived annoyances from air pollution were assessed. Instead of the usual air pollution concentrations at fixed monitoring sites, this paper compares the measured microenvironment concentrations and personal exposures of PM 2.5 and NO 2 to the perceived annoyance levels. A considerable proportion of the adults surveyed was annoyed by air pollution. Female gender, self-reported respiratory symptoms, downtown living and self-reported sensitivity to air pollution were directly associated with high air pollution annoyance score while in traffic, but smoking status, age or education level were not significantly associated. Population level annoyance averages correlated with the city average exposure levels of PM 2.5 and NO 2. A high correlation was observed between the personal 48-h PM 2.5 exposure and perceived annoyance at home as well as between the mean annoyance at work and both the average work indoor PM 2.5 and the personal work time PM 2.5 exposure. With the other significant determinants (gender, city code, home location) and home outdoor levels the model explained 14% (PM 2.5) and 19% (NO 2) of the variation in perceived air pollution annoyance in traffic. Compared to

  6. Virtual Archaeology in an argentina colonial estancia

    Directory of Open Access Journals (Sweden)

    Florencia Vázquez

    2014-05-01

    Full Text Available This is a first approach to the application of virtual reconstruction techniques of a colonial house. In Argentina it is still uncommon to perform 3D modeling of archaeological sites and especially in historical archeology. As a first step, we used the Google SketchUp to model the country house located on the banks of the Río de la Plata (Buenos Aires. It has historical significance because it belonged to a Spanish councilman, housed hundreds of slaves and was the place where stayed the troops that carried out the Second British Invasion of Buenos Aires. In this case, the 3D modeling was useful for evaluating the future excavationa and activities of preservation of cultural heritage.

  7. Association between air pollution and suicide: a time series analysis in four Colombian cities.

    Science.gov (United States)

    Fernández-Niño, Julián Alfredo; Astudillo-García, Claudia Iveth; Rodríguez-Villamizar, Laura Andrea; Florez-Garcia, Víctor Alfonso

    2018-05-12

    Recent epidemiological studies have suggested that air pollution could be associated with suicide. However, other studies have criticized these results for being analytically weak and not taking into account potential confounding factors. As such, further studies examining the relationship under diverse contexts are necessary to help clarify this issue. This study explored the association between specific air pollutants (NO 2 , SO 2 , PM 10 , PM 2.5 , CO and O 3 ) and suicide incidence in four Colombian cities after adjusting for climatic variables and holidays. A time series of daily suicides among men and women living in Bogota, Medellin, Cali and Bucaramanga was generated using information from the National Administrative Department of Statistics (DANE) for the years 2011-2014. At the same time, the average daily concentration of each air pollutant for each city was obtained from monitoring stations belonging to the National Air Quality Surveillance System. Using this information together, we generated conditional Poisson models (stratified by day, month and year) for the suicide rate in men and women, with air pollutants as the principal explanatory variable. These models were adjusted for temperature, relative humidity, precipitation and holidays. No association was found between any of the examined pollutants and suicide: NO 2 (IRR:0.99, 95% CI: 0.95-1.04), SO 2 (IRR:0.99, 95% CI: 0.98-1.01), PM 10 (IRR:0.99, 95% CI:0.95-1.03), PM 2.5 (IRR:1.01, 95% CI: 0.98-1.05), CO (IRR:1.00, 95% CI:1.00-1.00) and O 3 (IRR: 1.00, 95% CI: 0.96-1.04). In the same way, no association was found in stratified models by sex and age group neither in lagged and cumulative effects models. After adjusting for major confounding factors, we found no statistically significant association between air pollution and suicide in Colombia. These "negative" results provide further insight into the current discussion regarding the existence of such a relationship.

  8. Dictadura y relaciones internacionales: Argentina y Chile entre 1829 y 1852

    OpenAIRE

    Lacoste, Pablo

    2001-01-01

    The study analizes the relationaship between Argentina and Chile during Rosas’ dictatorship in Buenos Aires (1829-1852) in comparison with the previous period (1810-1829) and the later (1852-1881). Three parameters are considered: the treaties signature, the existence of diplomatic representations and the comercial policies. The study of the mentioned parameters showes the bilateral relationship deterioration during the dictatorship. The study analizes the relationaship between Argentina a...

  9. Scinax berthae Barrio, 1962 (Anura, Hilydae. Primera cita para la provincia de Corrientes, Argentina

    Directory of Open Access Journals (Sweden)

    Waller, Tomás

    2000-04-01

    Full Text Available Argentina: Corrientes, departamento San Martín, Colonia Carlos Pellegrini, inmediaciones de la laguna Iberá (28°32'28"S - 57°10'20"W, Datum: WGS 84. Altitud: 65 m snm. 16 de octubre de 1999. Dos ejemplares macho. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", Buenos Aires, Argentina (MACN 37081, 37082. Colector: Tomás Waller.

  10. The possible association between exposure to air pollution and the risk for congenital malformations.

    Science.gov (United States)

    Farhi, Adel; Boyko, Valentina; Almagor, Jonatan; Benenson, Itzhak; Segre, Enrico; Rudich, Yinon; Stern, Eli; Lerner-Geva, Liat

    2014-11-01

    Over the last decade, there is growing evidence that exposure to air pollution may be associated with increased risk for congenital malformations. To evaluate the possible association between exposures to air pollution during pregnancy and congenital malformations among infants born following spontaneously conceived (SC) pregnancies and assisted reproductive technology (ART) pregnancies. This is an historical cohort study comprising 216,730 infants: 207,825 SC infants and 8905 ART conceived infants, during the periods 1997-2004. Air pollution data including sulfur dioxide (SO2), particulate matter air monitoring stations database for the study period. Using a geographic information system (GIS) and the Kriging procedure, exposure to air pollution during the first trimester and the entire pregnancy was assessed for each woman according to her residential location. Logistic regression models with generalized estimating equation (GEE) approach were used to evaluate the adjusted risk for congenital malformations. In the study cohort increased concentrations of PM10 and NOx pollutants in the entire pregnancy were associated with slightly increased risk for congenital malformations: OR 1.06(95% CI, 1.01-1.11) for 10 µg/m(3) increase in PM10 and OR 1.03(95% CI, 1.01-1.04) for 10 ppb increase in NOx. Specific malformations were evident in the circulatory system (for PM10 and NOx exposure) and genital organs (for NOx exposure). SO2 and O3 pollutants were not significantly associated with increased risk for congenital malformations. In the ART group higher concentrations of SO2 and O3 in entire pregnancy were associated (although not significantly) with an increased risk for congenital malformations: OR 1.06(95% CI, 0.96-1.17) for 1 ppb increase in SO2 and OR 1.15(95% CI, 0.69-1.91) for 10 ppb increase in O3. Exposure to higher levels of PM10 and NOx during pregnancy was associated with an increased risk for congenital malformations. Specific malformations were evident in

  11. Volcanic Ash Hazards and Risk in Argentina: Scientific and Social Collaborative Approaches.

    Science.gov (United States)

    Rovere, E. I., II; Violante, R. A.; Vazquez Herrera, M. D.; Martinez Fernandez, M. D. L. P.

    2015-12-01

    Due to the absence of alerts or volcanic impacts during 60 years (from 1932, Quizapu-Descabezado Grande -one of the major eruptions of the XX Century- until 1991 Hudson eruption) there was mild remembrance of volcanic hazards in the collective memory of the Argentina citizens. Since then and until April 2015, the social perception changed according to different factors: age, location, education, culture, vulnerability. This variability produces a maze of challenges that go beyond the scientific knowledge. Volcanic health hazards began to be understood in 2008 after the eruption of Chaiten volcano. The particle size of ashfall (concern on epidemiological monitoring. In 2011 the volcanic complex Puyehue - Cordon Caulle eruption produced ashfall through plumes that reached densely populated cities like San Carlos de Bariloche and Buenos Aires. Farther away in South Africa and New Zealand ash plumes forced airlines to cancel local and international flights for several weeks. The fear of another eruption did not wait long when Calbuco volcano started activity in April 2015, it came at a time when Villarrica volcano was also in an eruptive phase, and the SERNAGEOMIN Chile, through the Observatory OVDAS of the Southern Andes, faced multiple natural disasters at the same time, 3 volcanoes in activity, lahars, pyroclastic flows and floods in the North. In Argentina, critical infrastructure, farming, livestock and primary supplies were affected mainly in the western region. Copahue volcano, is increasing unstability on seismic and geochemistry data since 2012. Caviahue resort village, distant only 8 Km. from the active vent happens to be a high vulnerable location. In 2014 GEVAS (Geology, Volcanoes, Environment and Health) Network ARGENTINA Civil Association started collaborative activities with SEGEMAR and in 2015 with the IAPG (Geoethics, Argentina), intending to promote Best Practices in volcanic and geological hazards. Geoscientists and the volcano vulnerable population

  12. 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

  13. 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.

  14. 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)

  15. Changes in duration of dry and wet spells associated with air temperatures in Russia

    Science.gov (United States)

    Ye, Hengchun

    2018-03-01

    This study uses daily precipitation records from 517 Russian stations (1966-2010) to examine the relationships between continuous dry and wet day duration and surface air temperature for all four seasons. The study found that both mean and extreme durations of dry periods increase with air temperature at about 7.0% (0.24 day/°C) and 7.7% (0.86 day/°C) respectively, while those of wet periods decrease at about 1.3% (-0.02 day/°C) and 2.2% (-0.10 day/°C) respectively averaged over the entire study region during summer. An increase in the duration of dry periods with higher air temperature is also found in other seasons at locations with a mean seasonal air temperature of about -5 °C or higher. Opposite relationships of shorter durations of dry periods and longer wet periods associated with higher air temperature are observed over the northern part of the study region in winter. The changes in durations of both dry and wet periods have significant correlations with the changes in total dry and wet days but are about 2.5 times higher for dry periods and 0.5 times lower for wet periods. The study also found that locations with longer durations of dry periods experience faster rates of increase in air temperature, suggesting the likelihood of exacerbating drought severity in drier and/or warmer locations for all seasons.

  16. Associations between ambient air pollution and daily mortality among persons with congestive heart failure

    International Nuclear Information System (INIS)

    Goldberg, Mark S.; Burnett, Richard T.; Valois, M.-F.; Flegel, Kenneth; Bailar III, John C.; Brook, Jeffrey; Vincent Renaud; Radon, Katja

    2003-01-01

    We conducted a mortality time series study to investigate the association between daily mortality for congestive heart failure (CHF), and dail concentrations of particles and gaseous pollutants in the ambient air o Montreal, Quebec, during the period 1984-1993. In addition, using data fro the universal Quebec Health Insurance Plan, we identified individuals ≥6 years of age who, one year before death, had a diagnosis of CHF. Fixed-sit air pollution monitors in Montreal provided daily mean levels of pollutants We regressed the logarithm of daily counts of mortality on the daily mean levels of each pollutant, after accounting for seasonal and subseasonal fluctuations in the mortality time series, non-Poisson dispersion, weather variables, and other gaseous and particle pollutants. Using cause of deat information, we did not find any associations between daily mortality for CH and any air pollutants. The analyses of CHF defined from the medical record showed positive associations with coefficient of haze, the extinction coefficient, SO 2 , and NO 2 . For example, the mean percent increase in dail mortality for an increase in the coefficient of haze across the interquartile range was 4.32% (95% CI: 0.95-7.80%) and for NO 2 it was 4.08% (95% CI 0.59-7.68%). These effects were generally higher in the warm season

  17. Is There an Association Between Ambient Air Pollution and Bladder Cancer Incidence? Analysis of 15 European Cohorts

    DEFF Research Database (Denmark)

    Pedersen, Marie; Stafoggia, Massimo; Weinmayr, Gudrun

    2016-01-01

    Background: Ambient air pollution contains low concentrations of carcinogens implicated in the etiology of urinary bladder cancer (BC). Little is known about whether exposure to air pollution influences BC in the general population. Objective: To evaluate the association between long-term exposure......) with diameter Pollution Effects project...... of information about lifetime exposure. Conclusions: There was no evidence of an association between exposure to outdoor air pollution levels at place of residence and risk of BC. Patient summary: We assessed the link between outdoor air pollution at place of residence and bladder cancer using the largest study...

  18. Paracoccidioidomicosis asociada a otras patologías respiratorias en un hospital de Corrientes, Argentina Association of paracoccidioidomycosis with different pulmonary pathologies in a hospital in Corrientes province, Argentina

    Directory of Open Access Journals (Sweden)

    A. M. Pato

    2007-09-01

    Full Text Available Se realizó la búsqueda sistemática de paracoccidioidomicosis (PCM en un conjunto de pacientes que fueron atendidos en un hospital de la ciudad de Corrientes dentro de un período de dos años. El criterio de inclusión fue: pacientes con tuberculosis (TBC, pacientes con diagnóstico presuntivo o confirmado de cáncer de pulmón (CA, pacientes con enfermedad pulmonar obstructiva crónica (EPOC y pacientes con imagen radiológica compatible con micosis pulmonar (IRXC. Se estudiaron 84 pacientes: 57 con TBC, 1 con CA, 5 con EPOC, 3 con TBC+CA, 4 con TBC+EPOC, 4 con EPOC+CA y 10 con IRXC. A todos se les realizó serología por inmunodifusión en gel de agar (IDGA y, en los casos en que se pudo obtener una muestra clínica, también se efectuaron estudios microbiológicos. Por IDGA se diagnosticaron 10 casos de PCM: 4 asociados a TBC, 1 a TBC+CA, 3 a EPOC y 2 a IRXC; 9 de ellos se corroboraron por el hallazgo del hongo. La búsqueda sistemática de PCM en habitantes del área endémica que presentan patología pulmonar favorecería el diagnóstico precoz y, por lo tanto, las posibilidades de un tratamiento eficaz.For 2 years, a systematic research of paracoccidioidomycosis (PCM had been conducted in a hospital in the city of Corrientes. The inclusion criterium used was: tuberculosis patients (TBC, presumptive or confirmed diagnosis of pulmonary cancer (CA, chronic obstructive pulmonary disease (COPD and/or X-ray images compatible with pulmonary mycosis (XRC. Eighty four patients were studied: 57 (TBC, 1 (CA, 5 (COPD, 3 (TBC+CA, 4 (TBC+COPD, 4 (COPD+CA and 10 (XRC. Serology tests by agar gel immunodiffusion (IDGA were performed on all patients, whereas microbiological studies were performed on those cases in which clinical samples could be obtained. Ten PCM were diagnosed by IDGA; 4 associated to TBC, 1 to TBC+CA, 3 to COPD and only 2 to XRC. PCM was mycologically proven in 9 of these cases. Systematic research of PCM would lead to an early

  19. Trends in motor neuron disease: association with latitude and air lead levels in Spain.

    Science.gov (United States)

    Santurtún, Ana; Villar, Alejandro; Delgado-Alvarado, Manuel; Riancho, Javier

    2016-08-01

    Motor neuron diseases (MND) are a group of disorders characterized by motor neuron degeneration. Among them, amyotrophic lateral sclerosis (ALS) is by far the most common in adulthood. This paper assesses the trend and geographical pattern in MND incidence in Spain and the possible air lead levels effect on this pathology. To confirm this concept, we performed a retrospective analysis of the deaths due to MND in Spain during 2000 and 2013, determined the geographical differences, and explored the relationship between MND and the air levels of lead. Overall, between 2000 and 2013, 11,355 people died in Spain because of MND. Disease mortality significantly increased in recent years (2007-2013) when compared with the first time of the period. Spearman's rank correlation coefficient also showed a statistically significant positive trend (CC = 0.824, p = 0.0002). Among people over 65 years, mortality rates were higher in Northern provinces. Moreover, we found a significant association of MND mortality with higher air lead levels (CC = 0.457, p = 0.01). Our study confirms that MND mortality is increasing in Spain, with a significant latitude gradient, which suggests an important role of environmental exposures. This ecological study suggests that air lead levels may be implicated in ALS pathogenesis.

  20. Cardiovascular health, traffic-related air pollution and noise: are associations mutually confounded? A systematic review.

    Science.gov (United States)

    Tétreault, Louis-François; Perron, Stéphane; Smargiassi, Audrey

    2013-10-01

    This review assessed the confounding effect of one traffic-related exposure (noise or air pollutants) on the association between the other exposure and cardiovascular outcomes. A systematic review was conducted with the databases Medline and Embase. The confounding effects in studies were assessed by using change in the estimate with a 10 % cutoff point. The influence on the change in the estimate of the quality of the studies, the exposure assessment methods and the correlation between road noise and air pollutions were also assessed. Nine publications were identified. For most studies, the specified confounders produced changes in estimates noise and pollutants, the quality of the study and of the exposure assessment do not seem to influence the confounding effects. Results from this review suggest that confounding of cardiovascular effects by noise or air pollutants is low, though with further improvements in exposure assessment, the situation may change. More studies using pollution indicators specific to road traffic are needed to properly assess if noise and air pollution are subjected to confounding.

  1. Associations between immune function and air pollution among postmenopausal women living in the Puget Sound airshed

    Science.gov (United States)

    Williams, Lori A.

    Air pollution is associated with adverse health outcomes, and changes in the immune system may be intermediate steps between exposure and a clinically relevant adverse health outcome. We analyzed the associations between three different types of measures of air pollution exposure and five biomarkers of immune function among 115 overweight and obese postmenopausal women whose immunity was assessed as part of a year-long moderate exercise intervention trial. For air pollution metrics, we assessed: (1) residential proximity to major roads (freeways, major arterials and truck routes), (2) fine particulate matter(PM2.5) at the nearest monitor to the residence averaged over three time windows (3-days, 30-days and 60-days), and (3) nitrogen dioxide (NO2) modeled based on land use characteristics. Our immune biomarkers included three measures of inflammation---C-reactive protein, serum amyloid A and interleukin-6---and two measures of cellular immunity---natural killer cell cytotoxicity and T lymphocyte proliferation. We hypothesized that living near a major road, increased exposure to PM2.5 and increased exposure to NO2 would each be independently associated with increased inflammation and decreased immune function. We observed a 21% lower average natural killer cell cytotoxicity among women living within 150 meters of a major arterial road compared to other women. For PM2.5 , we observed changes in 3 of 4 indicators of lymphocyte proliferation stimulated by anti-CD3---an antibody to the T cell receptor associated with increases in 3-day averaged PM2.5. For 30-day averaged PM 2.5 and 60-day averaged PM2.5 we did not observe any statistically significant associations. We observed an increase in lymphocyte proliferation index stimulated by the plant protein phytohemagglutinin (PHA) at 1 of 2 PHA concentrations in association with modeled NO2. For the three inflammatory markers, we observed no notable associations with any of our measures of air pollution. If confirmed, our

  2. Air pollution from industrial waste gas emissions is associated with cancer incidences in Shanghai, China.

    Science.gov (United States)

    Cong, Xiaowei

    2018-05-01

    Outdoor air pollution may be associated with cancer risk at different sites. This study sought to investigate outdoor air pollution from waste gas emission effects on multiple cancer incidences in a retrospective population-based study in Shanghai, China. Trends in cancer incidence for males and females and trends in waste gas emissions for the total waste gas, industrial waste gas, other waste gas, SO 2 , and soot were investigated between 1983 and 2010 in Shanghai, China. Regression models after adjusting for confounding variables were constructed to estimate associations between waste gas emissions and multiple cancer incidences in the whole group and stratified by sex, Engel coefficient, life expectancy, and number of doctors per 10,000 populations to further explore whether changes of waste gas emissions were associated with multiple cancer incidences. More than 550,000 new cancer patients were enrolled and reviewed. Upward trends in multiple cancer incidences for males and females and in waste gas emissions were observed from 1983 to 2010 in Shanghai, China. Waste gas emissions came mainly from industrial waste gas. Waste gas emissions was significantly positively associated with cancer incidence of salivary gland, small intestine, colorectal, anus, gallbladder, thoracic organs, connective and soft tissue, prostate, kidney, bladder, thyroid, non-Hodgkin's lymphoma, lymphatic leukemia, myeloid leukemia, and other unspecified sites (all p emissions and the esophagus cancer incidence was observed (p emissions was associated with multiple cancer incidences.

  3. Association between clean indoor air laws and voluntary smokefree rules in homes and cars.

    Science.gov (United States)

    Cheng, Kai-Wen; Okechukwu, Cassandra A; McMillen, Robert; Glantz, Stanton A

    2015-03-01

    This study examines the influence that smokefree workplaces, restaurants and bars have on the adoption of smokefree rules in homes and cars, and whether there is an association with adopting smokefree rules in homes and cars. Bivariate probit models were used to jointly estimate the likelihood of living in a smokefree home and having a smokefree car as a function of law coverage and other variables. Household data were obtained from the nationally representative Social Climate Survey of Tobacco Control 2001, 2002 and 2004-2009; clean indoor air law data were from the American Nonsmokers' Rights Foundation Tobacco Control Laws Database. 'Full coverage' and 'partial coverage' smokefree legislation is associated with an increased likelihood of having voluntary home and car smokefree rules compared with 'no coverage'. The association between 'full coverage' and smokefree rule in homes and cars is 5% and 4%, respectively, and the association between 'partial coverage' and smokefree rules in homes and cars is 3% and 4%, respectively. There is a positive association between the adoption of smokefree rules in homes and cars. Clean indoor air laws provide the additional benefit of encouraging voluntary adoption of smokefree rules in homes and cars. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  4. Primer registro para la Argentina de una especie de chicharrita, Ctenarytaina spatulata (Hemiptera: Psyllidae, en plantaciones de eucalipto en Entre Ríos New record in Argentina of a species of jumping plant-lice, Ctenarytaina spatulata (Hemiptera: Psyllidae, in eucalypt plantations from Entre Ríos

    Directory of Open Access Journals (Sweden)

    Juan P. R. Bouvet

    2008-06-01

    Full Text Available Se menciona por primera vez para Argentina la especie Ctenarytaina spatulata Taylor, asociada a plantaciones de eucalipto. Este nuevo registro se obtuvo en la Provincia de Entre Ríos, Argentina.Ctenarytaina spatulata Taylor, a species associated with eucalypt plantations, is recorded for the first time from Entre Ríos, Argentina.

  5. Research reactors in Argentina

    International Nuclear Information System (INIS)

    Carlos Ruben Calabrese

    1999-01-01

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

  6. Preventive Effect of Residential Green Space on Infantile Atopic Dermatitis Associated with Prenatal Air Pollution Exposure.

    Science.gov (United States)

    Lee, Ji-Young; Lamichhane, Dirga Kumar; Lee, Myeongjee; Ye, Shinhee; Kwon, Jung-Hyun; Park, Myung-Sook; Kim, Hwan-Cheol; Leem, Jong-Han; Hong, Yun-Chul; Kim, Yangho; Ha, Mina; Ha, Eunhee

    2018-01-09

    Few birth cohort studies have examined the role of traffic-related air pollution (TRAP) in the development of infantile atopic dermatitis (AD), but none have investigated the role of preventive factors such as green spaces. The aim of this study was to investigate whether exposure to nitrogen dioxide (NO₂) and particulate matter with an aerodynamic diameter of Health study. Subjects were geocoded to their residential addresses and matched with air pollution data modeled using land-use regression. Information on infantile AD was obtained by using a questionnaire administered to the parents or guardians of the children. The association between infantile AD and exposure to NO₂ and PM 10 was determined using logistic regression models. We assessed the effects of residential green spaces using stratified analyses and by entering product terms into the logistic regression models. The risk of infantile AD significantly increased with an increase in air pollution exposure during the first trimester of pregnancy. The adjusted odds ratio (OR) and 95% confidence interval (CI) were 1.219 (1.023-1.452) per 10 μg/m³ increase in PM 10 and 1.353 (1.027-1.782) per 10 ppb increase in NO₂. An increase in the green space within 200 m of residence was associated with a decreased risk of AD (OR = 0.996, 95% CI: 0.993-0.999). The stratified analysis of residential green space revealed stronger associations between infantile AD and PM 10 and NO₂ exposure during the first trimester in the areas in the lower tertiles of green space. This study indicated that exposure to TRAP during the first trimester of pregnancy is associated with infantile AD. Less residential green space may intensify the association between TRAP exposure and infantile AD.

  7. Spatial associations between socioeconomic groups and NO2 air pollution exposure within three large Canadian cities.

    Science.gov (United States)

    Pinault, Lauren; Crouse, Daniel; Jerrett, Michael; Brauer, Michael; Tjepkema, Michael

    2016-05-01

    Previous studies of environmental justice in Canadian cities have linked lower socioeconomic status to greater air pollution exposures at coarse geographic scales, (i.e., Census Tracts). However, studies that examine these associations at finer scales are less common, as are comparisons among cities. To assess differences in exposure to air pollution among socioeconomic groups, we assigned estimates of exposure to ambient nitrogen dioxide (NO2), a marker for traffic-related pollution, from city-wide land use regression models to respondents of the 2006 Canadian census long-form questionnaire in Toronto, Montreal, and Vancouver. Data were aggregated at a finer scale than in most previous studies (i.e., by Dissemination Area (DA), which includes approximately 400-700 persons). We developed simultaneous autoregressive (SAR) models, which account for spatial autocorrelation, to identify associations between NO2 exposure and indicators of social and material deprivation. In Canada's three largest cities, DAs with greater proportions of tenants and residents who do not speak either English or French were characterised by greater exposures to ambient NO2. We also observed positive associations between NO2 concentrations and indicators of social deprivation, including the proportion of persons living alone (in Toronto), and the proportion of persons who were unmarried/not in a common-law relationship (in Vancouver). Other common measures of deprivation (e.g., lone-parent families, unemployment) were not associated with NO2 exposures. DAs characterised by selected indicators of deprivation were associated with higher concentrations of ambient NO2 air pollution in the three largest cities in Canada. Crown Copyright © 2016. Published by Elsevier Inc. All rights reserved.

  8. 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)

  9. Associations between long-term exposure to air pollution, glycosylated hemoglobin and diabetes.

    Science.gov (United States)

    Honda, Trenton; Pun, Vivian C; Manjourides, Justin; Suh, Helen

    2017-10-01

    Air pollution exposures have been shown to adversely impact health through a number of biological pathways associated with glucose metabolism. However, few studies have evaluated the associations between air pollution and glycosylated hemoglobin (HbA1c) levels. Further, no studies have evaluated these associations in US populations or investigated whether associations differ in diabetic as compared to non-diabetic populations. To address this knowledge gap, we investigated the associations between airborne fine particulate matter (PM 2.5 ) and nitrogen dioxide (NO 2 ) and HbA1c levels in both diabetic and non-diabetic older Americans. We also examined the impact of PM 2.5 and NO 2 on prevalent diabetes mellitus (DM) in this cohort. We used multilevel logistic and linear regression models to evaluate the association between long-term average air pollutant levels and prevalence of DM and HbA1c levels, respectively, among 4121 older (57+ years) Americans enrolled in the National Social Life, Health, and Aging Project between 2005 and 2011. All models adjusted for age, sex, body mass index, smoking status, race, household income, education level, neighborhood socioeconomic status, geographic region, urbanicity and diabetic medication use. We estimated participant-specific exposures to PM 2.5 on a six-kilometer grid covering the conterminous U.S. using spatio-temporal models, and to NO 2 using nearest measurements from the Environmental Protection Agency's Air Quality System. HbA1c levels were measured for participants in each of two data collection waves from dried blood spots and log-transformed prior to analysis. Participants were considered diabetic if they had HbA1c values≥6.5% or reported taking diabetic medication. The prevalence of diabetes at study entry was 22.2% (n=916) and the mean HbA1c was 6.0±1.1%. Mean one-year moving average PM 2.5 and NO 2 exposures were 10.4±3.0μg/m 3 and 13.1±7.0 ppb, respectively. An inter-quartile range (IQR, 3.9μg/m 3

  10. Association between indoor and outdoor air pollution and adolescent asthma from 1995 to 1996 in Taiwan

    Energy Technology Data Exchange (ETDEWEB)

    Wang, T.N.; Ko, Y.C.; Chao, Y.Y.; Huang, C.C.; Lin, R.S.

    1999-10-01

    The study aim was to estimate the contribution of indoor and outdoor air pollution to the 1-year prevalence of adolescent asthma after personal susceptibility and other potential risk factors were taken into account. A large-scaled cross-sectional study was conducted among 165,173 high school students aged 11 to 16 years in the different communities of Kaohsiung and Pintong in Taiwan, from October 1995 to June 1996. Each student and his/her parents participating in the study completed a video and a written International Study of Asthma and Allergies in Childhood questionnaire about symptoms of wheezing and allergies, passive smoking, and demographic variables. After adjustment for potential confounders, adolescents exposed to cigarette smoking and environmental tobacco smoke were found to suffer from asthma at an increased frequency. The authors observed a statistically significant association between outdoor air pollution and asthma, after controlling for potential confound variables. Total suspended particulate, nitrogen dioxide, carbon monoxide, ozone, and airborne dust particles all displayed an independent association with asthma, respectively. There were no selection biases in this community-based study, which provides evidence that passive smoking and long-term, high average outdoor air pollution are independent risk factors of asthma.

  11. Association between ambient air pollution and proliferation of umbilical cord blood cells

    Energy Technology Data Exchange (ETDEWEB)

    Novack, L., E-mail: novack@bgu.ac.il [Department of Public Health, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva (Israel); Yitshak-Sade, M. [Clinical Research Center, Soroka University Medical Center, Beer-Sheva (Israel); Landau, D. [Division of Neonatology, University Medical Center, Beer-Sheva (Israel); Kloog, I. [Department of Geography, Ben-Gurion University of the Negev, Beer-Sheva (Israel); Sarov, B. [Department of Public Health, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva (Israel); Karakis, I. [Environmental Epidemiology Department, Ministry of Health, Jerusalem (Israel); Ashkelon Academic College, Ashkelon (Israel)

    2016-11-15

    It has been established as a common knowledge that ambient air pollution (AAP) has an adverse effect on human health. The pathophysiological mechanism of this impact is likely to be related to the oxidative stress. In the current study we estimate the association between AAP and cell proliferation (CP) of umbilical cord blood cells, representing maternal organism most proximal to the fetal body. Blood samples were tested for proliferation in 292 enrolled Arab-Bedouin women at delivery (July 2012–March 2013). The estimates of AAP were defined by a hybrid satellite based model predicting both PM{sub 2.5} (particles<2.5 µm in diameter) and PM{sub 10} (particles<10 µm in diameter) as well as monitoring stations for gaseous air pollutants. Risk estimates of pollution exposure were adjusted to medical history, household risk factors and meteorological factors on the day of delivery or one week prior. Ambient ozone (O{sub 3}) levels on 1, 2, 3and 4 days prior to delivery were associated with lower CP (Prevalence ratio (PR)=0.92, 0.92, 0.93, 0.93, respectively). Increase in inter-quartile range (IOR) of PM{sub 2.5} one day before delivery was associated with 9% increase in CP levels (PR=1.09). The positive direction in association was changed to negative association with CP for PM{sub 2.5} levels measured at more distant time periods (PR=0.90 and 0.93 for lags 5 and 6 days, respectively). Investigation of PM{sub 10} levels indicated a similar pattern (PR=1.05 for pollution values recorded one day before delivery and 0.93 and 0.95 for lags of 5 and 6 days, respectively). Carbon monoxide (CO) levels were associated with lower CP on the day of delivery and 1 day prior (PR=0.92 and PR=0.94). To conclude, the levels of cell proliferation of umbilical cord blood cells appear to be associated with the AAP. More studies are needed to support our findings. - Highlights: • Ambient air pollutants were suggested to have an impact on cell proliferation (CP) of umbilical cord

  12. Association between ambient air pollution and proliferation of umbilical cord blood cells

    International Nuclear Information System (INIS)

    Novack, L.; Yitshak-Sade, M.; Landau, D.; Kloog, I.; Sarov, B.; Karakis, I.

    2016-01-01

    It has been established as a common knowledge that ambient air pollution (AAP) has an adverse effect on human health. The p