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Sample records for aires argentina physical

  1. 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.

  2. Update on women in physics in Argentina

    Science.gov (United States)

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

    2013-03-01

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

  3. Update on women in physics in Argentina

    OpenAIRE

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

    2016-01-01

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

  4. 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.

  5. 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.

  6. 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)

  7. 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)

  8. Argentina

    International Nuclear Information System (INIS)

    Tanis, S.; Ramberg, B.

    1990-01-01

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

  9. 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.

  10. 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.

  11. 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...

  12. 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

  13. Academic education and training in Medical Physics in Argentina

    International Nuclear Information System (INIS)

    Mairal, L.; Sansogne, R.; Brunetto, M.; Valda, A.; Sanz, D.; Velez, G.; Stefanic, A.; Bourel, V.; Ruggeri, R.; Salinas, F.

    2012-01-01

    This work describes the current offer for academic and clinical training in medical physics in Argentina; as well as the specific requirements for professional licensing in some specializations, known as individual national license. Reference is made to current local legislation, highlighting the fact that diagnostic radiology does not include the requirement of medical physicist's compulsory advice. Thus, the labor supply is negligible in this area, to the detriment of the quality of this practice, mainly in terms of radiation protection for patients. Additionally, it is important to highlight the absence of the legal definition of a medical physicist as a health professional in the structure of Health Ministries, which increases disadvantages to those who practice this discipline in public health institutions. Finally, it is noted the absence of doctoral programs in medical physics and its impact on research, development and teaching (author)

  14. Academic education and training in Medical Physics in Argentina

    International Nuclear Information System (INIS)

    Mairal, L.; Ruggeri, R.; Sansogne, R.; Salinas, F.; Brunetto, M.; Valda, A.; Sanz, D.; Velez, G.; Stefanic, A.; Bourel, V.

    2013-01-01

    This work describes the current offer for academic and clinical training in medical physics in Argentina; as well as the specific requirements for professional licensing in some specializations, known as individual national license. Reference is made to current local legislation, highlighting the fact that diagnostic radiology does not include the requirement of medical physicist’s compulsory advice. Thus, the labor supply is negligible in this area, to the detriment of the quality of this practice, mainly in terms of radiation protection for patients. Additionally, it is important to highlight the absence of the legal definition of a medical physicist as a health professional in the structure of Health Ministries, which increases disadvantages to those who practice this discipline in public health institutions. Finally, it is noted the absence of doctoral programs in medical physics and its impact on research, development and teaching. (author)

  15. 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)

  16. 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.)

  17. 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.

  18. 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.

  19. 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

  20. 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.

  1. 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

  2. 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.

  3. Argentina

    Directory of Open Access Journals (Sweden)

    G. Benedetti

    2007-01-01

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

  4. 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.

  5. 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.

  6. 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

    Directory of Open Access Journals (Sweden)

    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

  7. 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)

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

    Directory of Open Access Journals (Sweden)

    Mercedes Mariano

    2015-08-01

    Full Text Available This paper is about the representations, practices and cultural expressions carried out by groups of Bolivian immigrants and their descendants in the cities of Olavarria, Tandil and Azul in the province of Buenos Aires, Argentina. For this purpose, the three case studies presented are analyzed based on the theoretical notions of identities and ethnic groups proper to the field of social anthropology. It thus seeks to contribute to knowledge about the construction of the identities of Bolivian immigrants in Argentina and, especially, to the discussion of those perspectives that propose the cultural assimilation of these groups into the host society.

  9. Academic education and training in Medical Physics in Argentina; Formacion academica y entrenamiento en Fisica Medica en la Republica Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Mairal, L., E-mail: lmairal@mevaterapia.com.ar, E-mail: lmairal@gmail.com [Mevaterapia Centro Medico S.A., Buenos Aires (Argentina); Universidad Nacional de La Plata, Buenos Aires (Argentina); Ruggeri, R. [Mevaterapia Centro Medico S.A., Buenos Aires (Argentina); Sansogne, R.; Salinas, F., E-mail: rosana.sansogne@rtp.com.ar [Vidt Centro Medico, Buenos Aires (Argentina); Brunetto, M., E-mail: monica.brunetto@dfunes.com.ar [Centro Medico Dean Funes, Cordoba (Argentina); Valda, A., E-mail: valda@tandar.cnea.gov.ar [Universidad Nacional de San Martin, Buenos Aires (Argentina); Sanz, D., E-mail: dsanz@fuesmen.edu.ar [Fundacion Escuela Medicina Nuclear (FUESMEN), Mendoza (Argentina); Velez, G., E-mail: grvelez@gmail.com [Hospital Oncologico, Cordoba (Argentina); Stefanic, A., E-mail: stefanic@cae.cnea.gov.ar [Comision Nacional de Energia Atomica (CNEA), Buenos Aires (Argentina); Bourel, V., E-mail: vbourel@me.com [Universidad Favaloro, Buenos Aires (Argentina)

    2013-07-01

    This work describes the current offer for academic and clinical training in medical physics in Argentina; as well as the specific requirements for professional licensing in some specializations, known as individual national license. Reference is made to current local legislation, highlighting the fact that diagnostic radiology does not include the requirement of medical physicist’s compulsory advice. Thus, the labor supply is negligible in this area, to the detriment of the quality of this practice, mainly in terms of radiation protection for patients. Additionally, it is important to highlight the absence of the legal definition of a medical physicist as a health professional in the structure of Health Ministries, which increases disadvantages to those who practice this discipline in public health institutions. Finally, it is noted the absence of doctoral programs in medical physics and its impact on research, development and teaching. (author)

  10. 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)

  11. 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.

  12. 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.

  13. 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...

  14. 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...

  15. 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.

  16. 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).

  17. 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

    Directory of Open Access Journals (Sweden)

    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.

  18. 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.

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

    Directory of Open Access Journals (Sweden)

    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

  20. Exposure to Air Pollutants During Physical Activity

    NARCIS (Netherlands)

    Ramos, C.A.

    2016-01-01

    The context for this thesis is the concern that people who practice physical activity are more susceptible to air pollution. For the studies presented here, three perspectives of physical activity were considered: in indoor, i) physical activity in fitness centers; in outdoor ii) the use of bicycle

  1. [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.

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

    Directory of Open Access Journals (Sweden)

    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.

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

    Directory of Open Access Journals (Sweden)

    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.

  4. 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.

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

    Directory of Open Access Journals (Sweden)

    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.

  6. 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

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

    Directory of Open Access Journals (Sweden)

    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.

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

    Science.gov (United States)

    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.

  9. METABOLIC SYNDROME AND PHYSICAL ACTIVITY IN CHILEAN IMMIGRANTS LIVING IN RIO GALLEGOS, SANTA CRUZ, ARGENTINA.

    Directory of Open Access Journals (Sweden)

    Inger Sally Padilla

    2012-12-01

    Full Text Available To study the frequency of metabolic syndrome, its components and its relationship with physical activity in Chilean immigrants living in Río Gallegos, Santa Cruz, Argentina.314 Chilean immigrants (165 women and 149 men were interviewed in Rio Gallegos in 2010, with healthy status in medical records (2000. Anthropometry, blood pressure control, blood test to measure glucose, triglycerides and HDL cholesterol were determined. Metabolic syndrome was established by criteria of the NCEPATPIII.The metabolic syndrome had an overall prevalence of 28.9% (95%CI: 23.9 to 34. Metabolic syndrome prevalence was larger in women (32.1% than in men (25.5%. The prevalence of its components were: abdominal obesity 56%, low levels of HDL cholesterol 48.3%, high levels of triglycerides 68.1%, hypertension 46.1% and high levels of glucose 72.5%. Inadequate physical activity was 66.2% (95%CI: 60.1 to 71.5. Immigrants had more likelihood of metabolic syndrome living in Río Gallegos for 15 years or more(β: 5.74,95%CI:2,81-11,73, p=0.000 and with inadequate physical activity (β: 3.36, 95%CI: 1.57to7.21,p=0.002. The prevalence of metabolic syndrome in Chilean immigrants living in Río Gallegos is higher than that reported in Argentina and Chile

  10. 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.

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

    Directory of Open Access Journals (Sweden)

    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.

  12. 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.

  13. Situation of the medical physics in the Republic of Argentina. Regulatory problem linked to the requirement of physic specialists

    International Nuclear Information System (INIS)

    Arbor Gonzalez, A.; Larcher, A.; Blanco, S.

    2001-01-01

    This paper provides up-to-date data on the participation of medical physicists in current staffs for radiotherapy, nuclear medicine and diagnostic radiology in Argentina, and it presents projections on the academic education of specialists in the next five years. At the same time, the regulatory framework including the requirements for physicists staffing levels in medical practices is presented. This panorama permits to stick out the important role of the professional associations and the academic institutions in the development of Medical Physics in the country. (author)

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

    Directory of Open Access Journals (Sweden)

    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.

  15. 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.

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

    Science.gov (United States)

    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

  17. [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.

  18. 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.

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

    Directory of Open Access Journals (Sweden)

    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.

  20. 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.

  1. 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.

  2. 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.

  3. [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.

  4. 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

  5. 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.

  6. 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.

  7. 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

  8. 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

  9. 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.

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

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    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.

  11. 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.

  12. Macrophytes, epipelic biofilm, and invertebrates as biotic indicators of physical habitat degradation of lowland streams (Argentina).

    Science.gov (United States)

    Cortelezzi, Agustina; Sierra, María Victoria; Gómez, Nora; Marinelli, Claudia; Rodrigues Capítulo, Alberto

    2013-07-01

    Our objective was to assess the effect of the physical habitat degradation in three lowland streams of Argentina that are subject to different land uses. To address this matter, we looked into some physical habitat alterations, mainly the water quality and channel changes, the impact on macrophytes' community, and the structural and functional descriptors of the epipelic biofilm and invertebrate assemblages. As a consequence of physical and chemical perturbations, we differentiated sampling sites with different degradation levels. The low degraded sites were affected mainly for the suburban land use, the moderately degraded sites for the rural land use, and the highly degraded sites for the urban land use. The data shows that the biotic descriptors that best reflected the environmental degradation were vegetation cover and macrophytes richness, the dominance of tolerant species (epipelic biofilm and invertebrates), algal biomass, O2 consumption by the epipelic biofilm, and invertebrates' richness and diversity. Furthermore, the results obtained highlight the importance of the macrophytes in the lowland streams, where there is a poor diversification of abiotic substrates and where the macrophytes not only provide shelter but also a food source for invertebrates and other trophic levels such as fish. We also noted that both in benthic communities, invertebrates and epipelic biofilm supplied different information: the habitat's physical structure provided by the macrophytes influenced mainly the invertebrate descriptors; meanwhile, the water quality mainly influenced most of the epipelic biofilm descriptors.

  13. 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...

  14. 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

  15. 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.

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

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    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.

  17. 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

  18. "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.

  19. 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.

  20. 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

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    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.

  1. 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.

  2. 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.

  3. 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…

  4. 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

  5. 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.

  6. 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.

  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. 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

  9. 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.

  10. 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

  11. 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

  12. 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...

  13. 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

  14. 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.

  15. 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

  16. 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.

  17. 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...

  18. 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.

  19. 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.

  20. AIRS/Aqua Level 3 Pentad quantization in physical units (AIRS-only) V005

    Data.gov (United States)

    National Aeronautics and Space Administration — AIRS/Aqua Level 3 pentad quantization product in physical units (AIRS Only). The quantization products (QP) are distributional summaries derived from the Level-2...

  1. 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)

  2. 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

  3. 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

  4. 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.

  5. 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

  6. 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

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

    Directory of Open Access Journals (Sweden)

    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

  8. 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.

  9. 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

  10. 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

    Directory of Open Access Journals (Sweden)

    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

  11. 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

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

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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.

  13. 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

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    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

  14. 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

  15. 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

  16. 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.

  17. 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

  18. Ways of physical and symbolic isolation: leprosy; its isolation spaces and the medical-legal discourse in Argentina

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    Miranda, Marisa

    2008-12-01

    Full Text Available During the first half of the twentieth century, the presence of leprosy in modern societies provoked various reactions. As ancient prejudices had not disappeared yet, the medical-legal discourse dealt with a problem that exceeded the strictly sanitary framework. From a scientific perspective, this paper analyzes the way in which answers find that seemed the population and the future of the race in the physical and symbolic isolation of the leper, were developed in Argentina. In that context, the eugenics legitimated strong restrictions of rights to sick persons on whom this ancestral stigma continued to carry much weight.

    Durante la primera mitad del siglo XX la presencia de la lepra en sociedades modernas suscitó variadas reacciones. Aun sin que desaparecieran ancestrales prejuicios, el discurso médico-legal abordó un problema que excedía el marco estrictamente sanitario. El trabajo analiza el modo en que, desde una perspectiva científica, fueron gestadas en Argentina respuestas que creyeron hallar en el aislamiento físico y simbólico del leproso una forma proteger la población y el futuro de la raza. En ese contexto, la eugenesia legitimó fuertes restricciones de derechos a enfermos sobre los que siguió pesando aquel estigma ancestral.

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

    Directory of Open Access Journals (Sweden)

    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.

  20. 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.

  1. 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.

  2. 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.

  3. A physically based analytical spatial air temperature and humidity model

    Science.gov (United States)

    Yang Yang; Theodore A. Endreny; David J. Nowak

    2013-01-01

    Spatial variation of urban surface air temperature and humidity influences human thermal comfort, the settling rate of atmospheric pollutants, and plant physiology and growth. Given the lack of observations, we developed a Physically based Analytical Spatial Air Temperature and Humidity (PASATH) model. The PASATH model calculates spatial solar radiation and heat...

  4. Physical Profiling Performance of Air Force Primary Care Providers

    Science.gov (United States)

    2017-08-09

    AFRL-SA-WP-TR-2017-0014 Physical Profiling Performance of Air Force Primary Care Providers Anthony P. Tvaryanas1; William P...COVERED (From – To) September 2016 – January 2017 4. TITLE AND SUBTITLE Physical Profiling Performance of Air Force Primary Care Providers...encounter with their primary care team. An independent medical standards subject matter expert (SME) reviewed encounters in the electronic health record

  5. 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

  6. 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.

  7. 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

  8. 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…

  9. 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.

  10. 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

  11. 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

  12. 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.

  13. 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.

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

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    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.

  15. 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

  16. AIRS/Aqua Level 3 Pentad quantization in physical units (AIRS+AMSU) V005

    Data.gov (United States)

    National Aeronautics and Space Administration — AIRS/Aqua Level 3 pentad quantization product in physical units (Without HSB). The geophysical parameters have been averaged and binned into 1 x 1 deg grid cells,...

  17. Aqua AIRS Level 3 Quantization in Physical Units (AIRS+AMSU) V006

    Data.gov (United States)

    National Aeronautics and Space Administration — AIRS/Aqua Level 3 monthly quantization product in physical units (Without HSB). The quantization products (QP) are distributional summaries derived from the Level-2...

  18. AIRS/Aqua Level 3 Pentad quantization in physical units (AIRS+AMSU+HSB) V005

    Data.gov (United States)

    National Aeronautics and Space Administration — AIRS/Aqua Level 3 pentad quantization product in physical units (With HSB). The quantization products (QP) are distributional summaries derived from the Level-2...

  19. 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.

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

    Directory of Open Access Journals (Sweden)

    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

  1. [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.

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

    Directory of Open Access Journals (Sweden)

    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.

  3. 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.

  4. 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.

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

    Directory of Open Access Journals (Sweden)

    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

  6. 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.

  7. 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

  8. 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.

  9. Physical Sciences Facility Air Emission Control Equivalency Evaluation

    Energy Technology Data Exchange (ETDEWEB)

    Brown, David M.; Belew, Shan T.

    2008-10-17

    This document presents the adequacy evaluation for the application of technology standards during design, fabrication, installation and testing of radioactive air exhaust systems at the Physical Sciences Facility (PSF), located on the Horn Rapids Triangle north of the Pacific Northwest National Laboratory (PNNL) complex. The analysis specifically covers the exhaust portion of the heating, ventilation and air conditioning (HVAC) systems associated with emission units EP-3410-01-S, EP-3420-01-S and EP 3430-01-S.

  10. 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.

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

    Directory of Open Access Journals (Sweden)

    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

  12. 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.

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

    Directory of Open Access Journals (Sweden)

    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.

  14. 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...

  15. 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...

  16. 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...

  17. 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...

  18. 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.

  19. The Predictive Factors of the Promotion of Physical Activity by Air Force Squadron Commanders

    National Research Council Canada - National Science Library

    Whelan, Dana

    2001-01-01

    This research examined the relationship between beliefs about physical activity, physical activity levels, age and the promotional practices for physical activity employed by Air Force squadron commanders...

  20. Effect of a reservoir in the water quality of the Reconquista River, Buenos Aires, Argentina.

    Science.gov (United States)

    Rigacci, Laura N; Giorgi, Adonis D N; Vilches, Carolina S; Ossana, Natalia Alejandra; Salibián, Alfredo

    2013-11-01

    The lower portion of the Reconquista River is highly polluted. However, little is known about the state of the high and middle basins. The aims of this work were to assess the water quality on the high and middle Reconquista River basins and to determinate if the presence of a reservoir in the river has a positive effect on the water quality. We conducted a seasonal study between August 2009 and November 2010 at the mouth of La Choza, Durazno, and La Horqueta streams at the Roggero reservoir--which receives the water from the former streams--at the origin of the Reconquista River and 17 km downstream from the reservoir. We measured 25 physical and chemical parameters, including six heavy metal concentrations, and performed a multivariate statistical analysis to summarize the information and allow the interpretation of the whole data set. We found that the Durazno and La Horqueta streams had better water quality than La Choza, and the presence of the reservoir contributed to the improvement of the water quality, allowing oxygenation of the water body and processing of organic matter and ammonia. The water quality of the Reconquista River at its origin is good and similar to the reservoir, but a few kilometers downstream, the water quality declines as a consequence of the presence of industries and human settlements. Therefore, the Roggero reservoir produces a significant improvement of water quality of the river, but the discharge of contaminants downstream quickly reverses this effect.

  1. 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

  2. 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...

  3. 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...

  4. 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

  5. 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

  6. 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

  7. 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.

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

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    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.

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

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    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.

  10. 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

  11. 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.

  12. 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

  13. 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

  14. 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

  15. A physically based analytical spatial air temperature and humidity model

    Science.gov (United States)

    Yang, Yang; Endreny, Theodore A.; Nowak, David J.

    2013-09-01

    Spatial variation of urban surface air temperature and humidity influences human thermal comfort, the settling rate of atmospheric pollutants, and plant physiology and growth. Given the lack of observations, we developed a Physically based Analytical Spatial Air Temperature and Humidity (PASATH) model. The PASATH model calculates spatial solar radiation and heat storage based on semiempirical functions and generates spatially distributed estimates based on inputs of topography, land cover, and the weather data measured at a reference site. The model assumes that for all grids under the same mesoscale climate, grid air temperature and humidity are modified by local variation in absorbed solar radiation and the partitioning of sensible and latent heat. The model uses a reference grid site for time series meteorological data and the air temperature and humidity of any other grid can be obtained by solving the heat flux network equations. PASATH was coupled with the USDA iTree-Hydro water balance model to obtain evapotranspiration terms and run from 20 to 29 August 2010 at a 360 m by 360 m grid scale and hourly time step across a 285 km2 watershed including the urban area of Syracuse, NY. PASATH predictions were tested at nine urban weather stations representing variability in urban topography and land cover. The PASATH model predictive efficiency R2 ranged from 0.81 to 0.99 for air temperature and 0.77 to 0.97 for dew point temperature. PASATH is expected to have broad applications on environmental and ecological models.

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

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    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%.

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

    Science.gov (United States)

    Bruno, Perla

    2015-12-01

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

  18. 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.

  19. 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...

  20. 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...

  1. 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

    Directory of Open Access Journals (Sweden)

    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

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

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    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.

  3. [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.

  4. Physical Quality Indicators and Mechanical Behavior of Agricultural Soils of Argentina.

    Science.gov (United States)

    Imhoff, Silvia; da Silva, Alvaro Pires; Ghiberto, Pablo J; Tormena, Cássio A; Pilatti, Miguel A; Libardi, Paulo L

    2016-01-01

    Mollisols of Santa Fe have different tilth and load support capacity. Despite the importance of these attributes to achieve a sustainable crop production, few information is available. The objectives of this study are i) to assess soil physical indicators related to plant growth and to soil mechanical behavior; and ii) to establish relationships to estimate the impact of soil loading on the soil quality to plant growth. The study was carried out on Argiudolls and Hapludolls of Santa Fe. Soil samples were collected to determine texture, organic matter content, bulk density, water retention curve, soil resistance to penetration, least limiting water range, critical bulk density for plant growth, compression index, pre-consolidation pressure and soil compressibility. Water retention curve and soil resistance to penetration were linearly and significantly related to clay and organic matter (R2 = 0.91 and R2 = 0.84). The pedotransfer functions of water retention curve and soil resistance to penetration allowed the estimation of the least limiting water range and critical bulk density for plant growth. A significant nonlinear relationship was found between critical bulk density for plant growth and clay content (R2 = 0.98). Compression index was significantly related to bulk density, water content, organic matter and clay plus silt content (R2 = 0.77). Pre-consolidation pressure was significantly related to organic matter, clay and water content (R2 = 0.77). Soil compressibility was significantly related to initial soil bulk density, clay and water content. A nonlinear and significantly pedotransfer function (R2 = 0.88) was developed to predict the maximum acceptable pressure to be applied during tillage operations by introducing critical bulk density for plant growth in the compression model. The developed pedotransfer function provides a useful tool to link the mechanical behavior and tilth of the soils studied.

  5. Sound Synthesis of Objects Swinging through Air Using Physical Models

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    Rod Selfridge

    2017-11-01

    Full Text Available A real-time physically-derived sound synthesis model is presented that replicates the sounds generated as an object swings through the air. Equations obtained from fluid dynamics are used to determine the sounds generated while exposing practical parameters for a user or game engine to vary. Listening tests reveal that for the majority of objects modelled, participants rated the sounds from our model as plausible as actual recordings. The sword sound effect performed worse than others, and it is speculated that one cause may be linked to the difference between expectations of a sound and the actual sound for a given object.

  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

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    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.

  7. 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.

  8. Physical methods in air pollution research: The second decade

    International Nuclear Information System (INIS)

    Cahill, T.A.

    1985-01-01

    The ''Second Decade'' in the application of physical techniques to air pollution has been a profound change in the understanding and capabilities. A great deal remains to be done with the new tools. But what about the next phase? The author feels that it will probably involve greater chemical and biological emphasis, as opposed to merely elemental analysis. But this will not be easy, and one will again need an influx of new people and ideas into the field, most likely from the biological, organic chemical, and medical communities. The author predicts that because of the inherent complexity of the problem, it will not happen in just 10 years. In the meantime, one will somehow manage to keep busy rediscovering atmospheric aerosols yet again, but with the new eyes the improved physical methods have gained

  9. 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.

  10. 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 ± ...

  11. 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.

  12. 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.

  13. 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%.

  14. 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

    Directory of Open Access Journals (Sweden)

    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

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

    Directory of Open Access Journals (Sweden)

    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.

  16. 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

  17. 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.

  18. 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...

  19. 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.

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

    Directory of Open Access Journals (Sweden)

    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

  1. 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

  2. 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

  3. 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)

  4. 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.

  5. Expanded Air Force Physical Fitness Battery: Muscle Strength, Muscle Endurance, and Flexibility Considered. Workshop Proceedings

    National Research Council Canada - National Science Library

    Palmer, Barbara

    1997-01-01

    This Proceedings document summarizes the discussion that took place during the Expanded Physical Fitness Workshop, sponsored by the US Air Force Office for Prevention and Health Services Assessment...

  6. 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.)

  7. 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.

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

    Directory of Open Access Journals (Sweden)

    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.

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

    Directory of Open Access Journals (Sweden)

    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.

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

    Directory of Open Access Journals (Sweden)

    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.

  11. 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.

  12. 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

  13. 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

    Directory of Open Access Journals (Sweden)

    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

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

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    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. 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.

  16. 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.

  17. 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 (...

  18. 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

  19. 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

  20. 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.

  1. 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

    Full Text Available La erosión eólica puede alterar la calidad de los suelos y la atmósfera. La magnitud de estos efectos es variable según el tipo de suelo y su uso, y está asociada con el tipo de transporte de las partículas: rodadura y saltación deterioran más el suelo mientras que la suspensión tiende a emitir partículas finas (PM10 afectando la calidad del aire. El objetivo de este estudio fue analizar la magnitud de la erosión eólica en diferentes suelos de la Argentina, con el fin de inferir su incidencia sobre la degradación del suelo y la emisión de partículas finas a la atmósfera. El estudio se llevó a cabo en cuatro sitios de la Argentina, ubicados en las provincias de Chaco (CHA, San Luis (SLU, La Pampa (LPA y Río Negro (PAT. En los mismos se midió la erosión eólica a campo en parcelas cuadradas de 1 ha, por medio de colectores BSNE. Los resultados indican que tanto el material total circulante en el ambiente, definido como el flujo de masa (FM, como la erosión del suelo (Q, fueron mayores en los sitios con suelos menos evolucionados de SLU (Ustipsamment y LPA (Haplustol y menores en los sitios con suelos mas evolucionados de CHA (Hapludol o con suelos poco evolucionados pero con cobertura vegetal permanente de pastos naturales de PAT (Haplargid. El transporte de material se realizó, principalmente, por saltación y rodadura en SLU, LPA y CHA y por suspensión en PAT. En este último sitio la presencia de cobertura vegetal, aunque en baja proporción (10%, elevó el perfil del viento e incrementó la suspensión. El cociente FM/Q, un índice de la proporción de la erosión del suelo en relación a la movilización total de material en el ambiente, fue máxima en PAT, intermedia en SLU y LPA y mínima en CHA. Se pudo concluir que en ambientes con altas velocidades de viento, suelos poco evolucionados como los Haplargides pero con manejos pastoriles que mantienen coberturas permanentes de pastos, la erosión eólica afectar

  2. 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

  3. 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.

  4. 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.

  5. (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.

  6. 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

  7. 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.

  8. 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)

  9. 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.

  10. 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

  11. Clean indoor air increases physical independence : a pilot study

    NARCIS (Netherlands)

    Snijders, M.C.L.; Koren, L.G.H.; Kort, H.S.M.; Bronswijk, van J.E.M.H.

    2001-01-01

    Clean indoor air enhances health. In a pilot study, we examined whether a good indoor air quality increases the activity potential of older persons with chronic lung disease. Five older persons were studied while performing kitchen activities. Body movement and heart rate were monitored.

  12. 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

  13. 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

  14. 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

  15. 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.

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

    Directory of Open Access Journals (Sweden)

    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

  17. 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

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

    Directory of Open Access Journals (Sweden)

    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.

  19. 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.

  20. 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)

  1. 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...

  2. 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...

  3. 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...

  4. 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.

  5. 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

  6. 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.

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

    Directory of Open Access Journals (Sweden)

    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.

  8. 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.

  9. 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)

  10. 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.

  11. 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

  12. Atmospheric chemistry and physics from air pollution to climate change

    CERN Document Server

    Seinfeld, John H

    2016-01-01

    Expanded and updated with new findings and new features Since the second edition of Seinfeld and Pandis’ classic textbook, significant progress has taken place in the field of atmospheric chemistry and physics, particularly in the areas of tropospheric chemistry, aerosols, and the science of climate change. A new edition of this comprehensive work has been developed by the renowned author team. Atmospheric Chemistry and Physics, 3rd Edition, as the previous two editions have done, provides a rigorous and comprehensive treatment of the chemistry and physics of the atmosphere – including the chemistry of the stratosphere and troposphere, aerosol physics and chemistry, atmospheric new particle formation, physical meteorology, cloud physics, global climate, statistical analysis of data, and mathematical chemical/transport models of the atmosphere. Each of these topics is covered in detail and in each area the central results are developed from first principles. In this way the reader gains a significant un...

  13. Physics-Based Aeroelastic Analysis for Future Air Vehicle Concepts Using a Fully Nonlinear Methodology

    National Research Council Canada - National Science Library

    Strganac, Thomas W

    2007-01-01

    Future air vehicles will be highly flexible and will include deformable sub-systems resulting in new physical interactions between a vehicle's structure, the surrounding flowfleld, and the dynamics...

  14. 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)

  15. 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.

  16. The effect of air dried conditions on mechanical and physical ...

    African Journals Online (AJOL)

    STORAGESEVER

    2009-04-20

    Apr 20, 2009 ... small dimension wooden material is used and this affects the cost of ... The first serious application of laminating technique ... buildings, stock hangar, farms and stables constructions ... resistant lamine elements to air dried condition were easy .... the other was organic solvent water repellent protim WR230.

  17. An overview of Experimental Condensed Matter Physics in Argentina by 2014, and Oxides for Non Volatile Memory Devices: The MeMOSat Project

    Science.gov (United States)

    Levy, Pablo

    2015-03-01

    In the first part of my talk, I will describe the status of the experimental research in Condensed Matter Physics in Argentina, biased towards developments related to micro and nanotechnology. In the second part, I will describe the MeMOSat Project, a consortium aimed at producing non-volatile memory devices to work in aggressive environments, like those found in the aerospace and nuclear industries. Our devices rely on the Resistive Switching mechanism, which produces a permanent but reversible change in the electrical resistance across a metal-insulator-metal structure by means of a pulsed protocol of electrical stimuli. Our project is devoted to the study of Memory Mechanisms in Oxides (MeMO) in order to establish a technological platform that tests the Resistive RAM (ReRAM) technology for aerospace applications. A review of MeMOSat's activities is presented, covering the initial Proof of Concept in ceramic millimeter sized samples; the study of different oxide-metal couples including (LaPr)2/3Ca1/3MnO, La2/3Ca1/3MnO3, YBa2Cu3O7, TiO2, HfO2, MgO and CuO; and recent miniaturized arrays of micrometer sized devices controlled by in-house designed electronics, which were launched with the BugSat01 satellite in June2014 by the argentinian company Satellogic.

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

    Directory of Open Access Journals (Sweden)

    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

  19. AIRS/Aqua Level 3 Daily standard physical retrieval (AIRS-only) V005

    Data.gov (United States)

    National Aeronautics and Space Administration — The AIRS Only Level 3 Daily Gridded Product contains standard retrieval means, standard deviations and input counts. Each file covers a temporal period of 24 hours...

  20. AIRS/Aqua Level 3 Monthly standard physical retrieval (AIRS-only) V005

    Data.gov (United States)

    National Aeronautics and Space Administration — The AIRS Only Level 3 Monthly Gridded Retrieval Product contains standard retrieval means, standard deviations and input counts. Each file covers a calendar month....

  1. AIRS/Aqua Level 3 Daily standard physical retrieval (AIRS+AMSU) V005

    Data.gov (United States)

    National Aeronautics and Space Administration — The AIRS Level 3 Daily Gridded Product contains standard retrieval means, standard deviations and input counts. Each file covers a temporal period of 24 hours for...

  2. Aqua AIRS Level 3 Daily Standard Physical Retrieval (AIRS+AMSU) V006

    Data.gov (United States)

    National Aeronautics and Space Administration — The AIRS Level 3 Daily Gridded Product contains standard retrieval means, standard deviations and input counts. Each file covers a temporal period of 24 hours for...

  3. AIRS/Aqua Level 3 Monthly standard physical retrieval (AIRS+AMSU) V005

    Data.gov (United States)

    National Aeronautics and Space Administration — The AIRS Level 3 Monthly Gridded Retrieval Product contains standard retrieval means, standard deviations and input counts. Each file covers a calendar month. The...

  4. Aqua AIRS Level 3 8-day Standard Physical Retrieval (AIRS+AMSU) V006

    Data.gov (United States)

    National Aeronautics and Space Administration — The AIRS Level 3 8-Day Gridded Retrieval Product contains standard retrieval means, standard deviations and input counts. Each file covers an 8-day period, or...

  5. Aqua AIRS Near Real Time (NRT) Level 2 Standard Physical Retrieval (AIRS+AMSU) V006

    Data.gov (United States)

    National Aeronautics and Space Administration — The Atmospheric Infrared Sounder (AIRS) is a facility instrument aboard the second Earth Observing System (EOS) polar-orbiting platform, EOS Aqua. In combination...

  6. Aqua AIRS Level 3 Monthly Standard Physical Retrieval (AIRS-only) V006

    Data.gov (United States)

    National Aeronautics and Space Administration — The AIRS Only Level 3 Monthly Gridded Retrieval Product contains standard retrieval means, standard deviations and input counts. Each file covers a calendar month....

  7. AIRS/Aqua Level 3 8-day standard physical retrieval (AIRS+AMSU) V005

    Data.gov (United States)

    National Aeronautics and Space Administration — The AIRS Level 3 8-Day Gridded Retrieval Product contains standard retrieval means, standard deviations and input counts. Each file covers an 8-day period, or...

  8. AIRS/Aqua Level 3 8-day standard physical retrieval (AIRS-only) V005

    Data.gov (United States)

    National Aeronautics and Space Administration — The AIRS Only Level 3 8-Day Gridded Retrieval Product contains standard retrieval means, standard deviations and input counts. Each file covers an 8-day period, or...

  9. Aqua AIRS Level 3 Monthly Standard Physical Retrieval (AIRS+AMSU) V006

    Data.gov (United States)

    National Aeronautics and Space Administration — The AIRS Level 3 Monthly Gridded Retrieval Product contains standard retrieval means, standard deviations and input counts. Each file covers a calendar month. The...

  10. Aqua AIRS Level 3 Daily Standard Physical Retrieval (AIRS-only) V006

    Data.gov (United States)

    National Aeronautics and Space Administration — The AIRS Only Level 3 Daily Gridded Product contains standard retrieval means, standard deviations and input counts. Each file covers a temporal period of 24 hours...

  11. Aqua AIRS Level 3 8-day Standard Physical Retrieval (AIRS-only) V006

    Data.gov (United States)

    National Aeronautics and Space Administration — The AIRS Only Level 3 8-Day Gridded Retrieval Product contains standard retrieval means, standard deviations and input counts. Each file covers an 8-day period, or...

  12. AIRS/Aqua Level 2 Standard physical retrieval (AIRS+AMSU) V005

    Data.gov (United States)

    National Aeronautics and Space Administration — The Atmospheric Infrared Sounder (AIRS) is a facility instrument aboard the second Earth Observing System (EOS) polar-orbiting platform, EOS Aqua. In combination...

  13. Aqua AIRS Level 2 Standard Physical Retrieval (AIRS+AMSU) V006

    Data.gov (United States)

    National Aeronautics and Space Administration — The Atmospheric Infrared Sounder (AIRS) is a facility instrument aboard the second Earth Observing System (EOS) polar-orbiting platform, EOS Aqua. In combination...

  14. 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

  15. Physical distributions of radon decay chain activities in air

    International Nuclear Information System (INIS)

    Rolle, R.

    2004-01-01

    The distribution of short-lived radon decay chain activities in air - in time, space and on aerosols - determines their exposure potential and measurement thereof. The radioactive decay constants and flow variables in a flow system combine, yielding activity concentration distributions and ratios of concentrations characteristic of the flow scheme, its source(s) and sink(s). The clock of 'internal' decay constants allows the unraveling of characteristics of the flow scheme from activity concentration measurements of individual members of a decay chain. Basic flow string calculations are shown. These can be assembled to define or simulate concentrations in a single- or multiple-compartment flow network. Response calculations to single- and multiple-step, or continuous changes in sources and sinks yield time-, spatial- and attachment-distributions. For the short-lived 222 Rn and 212 Pb decay chains the decay constants of the shorter-lived progeny in relation to the parent impose air activity ratios on successive chain members. Ratio limits had been used in the past to improve older grab-sampling- or integral gross-alpha measurement procedures for assessing exposure level. Assessment of individual concentrations, ratios and their distributions enables unravelling of dynamic flow systems, with restriction from the range of the parameters of flow and decay. An activity measuring instrument by itself represents a flow system with a response time distribution. Instrument response correction during continuous or quasi-continuous sampling and continuous spectrometric measurement allows far more accurate time-resolved measurement evaluation of continuously varying air concentrations, than previously attainable. Strong diurnal or even shorter (≤ 1 hr) changes probably are the norm in indoor and outdoor air activity concentrations. A mere average response evaluation, as used in steady state instrument calibration, and using less efficient instruments, is usually inadequate

  16. 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.

  17. 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

  18. 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.

  19. 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

  20. 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

  1. Indoor air quality of environments used for physical exercise and sports practice: Systematic review.

    Science.gov (United States)

    Andrade, Alexandro; Dominski, Fábio Hech

    2018-01-15

    Systematic reviews have the potential to contribute substantially to environmental health and risk assessment. This study aimed to investigate indoor air quality of environments used for physical exercise and sports practice through a systematic review. The systematic review followed the PRISMA guidelines and was recorded in the PROSPERO registry (CRD42016036057). The search was performed using the SciELO, Science Direct, Scopus, LILACS, MEDLINE via PubMed, and SPORTDiscus databases, from their inception through April 2017. The search terms used in the databases were {air pollution" OR "air pollutants" OR "air quality"} AND {"physical exercise" OR "physical activity" OR "sport"}. The results of selected studies were divided into 5 categories for analysis: monitoring of air quality in the environment according to international guidelines, indoor-to-outdoor ratio (I/O), air quality during physical exercise, impact of air quality on health, and interventions to improve indoor air quality. Among 1281 studies screened, 34 satisfied the inclusion criteria. The monitoring of pollutants was conducted in 20 studies. CO and NO 2 were the most investigated pollutants, and guidelines were discussed in most studies. The I/O ratio was investigated in 12 studies, of which 9 showed a higher concentration of some pollutants in indoor rather than outdoor environments. Among the 34 studies selected, only 7 investigated the impact of indoor air pollution on human health. The population in most of these studies consisted of hockey players. Most studies conducted monitoring of pollutants in indoor environments used for physical exercise and sports practice. The earliest studies were conducted in ice skating rinks and the most recent evaluated gymnasiums, fitness centers, and sports centers. The CO, particulate matter, and NO 2 concentrations were the most investigated and have the longest history of investigation. These pollutants were within the limits established by guidelines in most

  2. Physical Activity, Air Pollution and the Risk of Asthma and Chronic Obstructive Pulmonary Disease

    DEFF Research Database (Denmark)

    Fisher, Jack E; Loft, Steffen; Ulrik, Charlotte S

    2016-01-01

    RATIONALE: Physical activity enhances uptake of air pollutants in the lung, possibly augmenting their harmful effects on chronic lung disease during exercise. OBJECTIVES: To examine whether benefits of physical activity with respect to the risk of asthma and chronic obstructive pulmonary disease...... (COPD) are moderated by exposure to high air pollution levels in an urban setting. METHODS: A total of 53,113 subjects (50-65 yr) from the Danish Diet, Cancer, and Health cohort reported physical activity at recruitment (1993-1997) and were followed until 2013 in the National Patient Register.......03-1.27]) hospitalizations (comparing ≥21.0 μg/m(3) to pollution during exercise does not outweigh beneficial effects of physical activity...

  3. 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

  4. 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

  5. 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...

  6. 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...

  7. Ambient fine particulate matter air pollution and leisure-time physical inactivity among US adults.

    Science.gov (United States)

    An, R; Xiang, X

    2015-12-01

    There is mounting evidence documenting the adverse health effects of short- and long-term exposure to ambient fine particulate matter (PM2.5) air pollution, but population-based evidence linking PM2.5 and health behaviour remains lacking. This study examined the relationship between ambient PM2.5 air pollution and leisure-time physical inactivity among US adults 18 years of age and above. Retrospective data analysis. Participant-level data (n = 2,381,292) from the Behavioral Risk Factor Surveillance System 2003-2011 surveys were linked with Wide-ranging Online Data for Epidemiologic Research air quality data by participants' residential county and interview month/year. Multilevel logistic regressions were performed to examine the effect of ambient PM2.5 air pollution on participants' leisure-time physical inactivity, accounting for various individual and county-level characteristics. Regressions were estimated on the overall sample and subsamples stratified by sex, age cohort, race/ethnicity and body weight status. One unit (μg/m(3)) increase in county monthly average PM2.5 concentration was found to be associated with an increase in the odds of physical inactivity by 0.46% (95% confidence interval = 0.34%-0.59%). The effect was similar between the sexes but to some extent (although not always statistically significant) larger for younger adults, Hispanics, and overweight/obese individuals compared with older adults, non-Hispanic whites or African Americans, and normal weight individuals, respectively. Ambient PM2.5 air pollution is found to be associated with a modest but measurable increase in individuals' leisure-time physical inactivity, and the relationship tends to differ across population subgroups. Copyright © 2015 The Royal Society for Public Health. Published by Elsevier Ltd. All rights reserved.

  8. 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

  9. 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

  10. A Study of the Combined Effects of Physical Activity and Air Pollution on Mortality in Elderly Urban Residents

    DEFF Research Database (Denmark)

    Andersen, Zorana Jovanovic; de Nazelle, Audrey; Mendez, Michelle A

    2015-01-01

    BACKGROUND: Physical activity reduces, whereas exposure to air pollution increases the risk of premature mortality. Physical activity amplifies respiratory uptake and deposition of air pollutants in the lung, which may augment acute harmful effects of air pollution during exercise. OBJECTIVES......: To examine whether benefits of physical activity on mortality are moderated by long-term exposure to high air pollution levels in an urban setting. METHODS: 52,061 subjects (50-65 years) from the Danish Diet, Cancer, and Health cohort, living in Aarhus and Copenhagen reported data on physical activity...... exposure (HR = 0.77; 95% CI: 0.54, 1.11 and HR = 0.81; 95% CI: 0.55, 1.18, p-interaction = 0.09 and 0.02, respectively). CONCLUSIONS: In general, exposure to high levels of traffic-related air pollution did not modify associations indicating beneficial effects of physical activity on mortality. These novel...

  11. Indicadores de calidad física en suelos de la Región Pampeana Norte de Argentina bajo siembra directa Physical quality indicators in soils from the northern Pampa region of Argentina under no till management

    Directory of Open Access Journals (Sweden)

    Laura Ferreras

    2007-12-01

    conservation of soil properties associated both to fertility and tillage. Soil alterations induced by management may affect crop production since management practices influence organic matter distribution and nutrient dynamics, and also soil aggregation and porosity. The Argentinean Northern Pampa is one of the region of the world where soils have been subjected to an intensive agricultural use during the last decades, and where direct drilling has been increasingly adopted. The aim of the present work was to evaluate soil physical quality parameters from agricultural systems under no tillage, in soils representative of the Northern Pampa Region, and to compare them with the same soil type but under pristine condition. A soil physical characterization of plots under cropping was carried out on eleven fields included in the Nutrition Network of CREA Southern Santa Fe, with trials located in Santa Fe, Córdoba and Buenos Aires Provinces. Also, a sampling in an adjacent undisturbed sector with the same soil type was carried out. Soil composite samples were collected at two depths (0-0.08 m and 0.08 m to the lower limit of the Ap horizon. Water and ethanol stable aggregate percentage (Ea and Ee, respectively, total organic carbon (COT, bulk density (DA and maximum soil density were determined (DMAX. Mechanical resistance (RM was measured at 0.05 m increments from the soil surface to 0.35 m depth. Soils were clustered in two groups according to their texture: Group I (surface clay content between 215 and 265 g kg-1 and Group II (surface clay content between 98 and 170 g kg-1. Higher values of Ea, Ee and COT were found in both surface and deep layers in the undisturbed soil with respect to cropped soil (p < 0.05. Soils from Group I showed higher Ea, Ee and COT with respect to those from the Group II. Total organic carbon decrease because of management was between 10 and 44%. Direct relationships were found between Ea and COT, and Ee-COT, respectively. Soils from the Group I showed

  12. 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.)

  13. A study of physical and chemical forms of 7BE in air particulates of Damascus city

    International Nuclear Information System (INIS)

    Al-Masri, M.S.; Al-Kharfan, K.; Hasan, M.

    1999-01-01

    Physical and chemical forms of 7B e in air particulates of Damascus city during 1997-1998 have been studied. Results have shown that 7B e is mainly attached to particulates having 0.95 μ diameters. In addition, a difference between 7B e concentrations in air particulates collected by TSP filters and PM10 filters has been observed. This difference could be used to evaluate the amount of 7B e due to air suspension. Moreover, results have also shown that the chemical forms of 7B e differ from one month to another according to weather conditions, 7B e was found to be in an exchangeable form in wet months and undissolved form in dry months. (author)

  14. Physical approach to air pollution climatological modelling in a complex site

    Energy Technology Data Exchange (ETDEWEB)

    Bonino, G [Torino, Universita; CNR, Istituto di Cosmo-Geofisica, Turin, Italy); Longhetto, A [Ente Nazionale per l' Energia Elettrica, Centro di Ricerca Termica e Nucleare, Milan; CNR, Istituto di Cosmo-Geofisica, Turin, Italy); Runca, E [International Institute for Applied Systems Analysis, Laxenburg, Austria

    1980-09-01

    A Gaussian climatological model which takes into account physical factors affecting air pollutant dispersion, such as nocturnal radiative inversion and mixing height evolution, associated with land breeze and sea breeze regimes, has been applied to the topographically complex area of La Spezia. The measurements of the dynamic and thermodynamic structure of the lower atmosphere obtained by field experiments are utilized in the model to calculate the SO/sub 2/ seasonal average concentrations. The model has been tested on eight three-monthly periods by comparing the simulated values with the ones measured at the SO/sub 2/ stations of the local air pollution monitoring network. Comparison of simulated and measured values was satisfactory and proved the applicability of the model for urban planning and establishment of air quality strategies.

  15. Estimating saturated hydraulic conductivity and air permeability from soil physical properties using state-space analysis

    DEFF Research Database (Denmark)

    Poulsen, Tjalfe; Møldrup, Per; Nielsen, Don

    2003-01-01

    and gaseous chemicals in the vadose zone. In this study, three modeling approaches were used to identify the dependence of saturated hydraulic conductivity (K-S) and air permeability at -100 cm H2O soil-water potential (k(a100)) on soil physical properties in undisturbed soil: (i) Multiple regression, (ii......) ARIMA (autoregressive integrated moving average) modeling, and (iii) State-space modeling. In addition to actual soil property values, ARIMA and state-space models account for effects of spatial correlation in soil properties. Measured data along two 70-m-long transects at a 20-year old constructed......Estimates of soil hydraulic conductivity (K) and air permeability (k(a)) at given soil-water potentials are often used as reference points in constitutive models for K and k(a) as functions of moisture content and are, therefore, a prerequisite for predicting migration of water, air, and dissolved...

  16. Health physics experience in commissioning and operation of radiation and air activity monitoring system at FBTR

    International Nuclear Information System (INIS)

    Raghunath, V.M.; Meenakshisundaram, V.; Viswanathan, S.; Bala Sundar, S.; Jose, M.T.; Suriyamurthy, N.; Ravi, T.; Subramanian, V.

    2001-01-01

    The Radiation and Air Activity Monitoring System (RAAMS) at Fast Breeder Test Reactor (FBTR) is meant to monitor and record the radiation and air activity levels at various potentially active areas in FBTR complex. Health Physics Group, FBTR was associated during commissioning of RAAMS in fixing the alarm settings for the monitors, their relocation and in formulating the surveillance procedures. The areas were surveyed to check for any release of activity for confirming the observed readings during operation of the reactor. In such cases, augmentation of shielding was recommended and was promptly implemented by the station management. The details of the long and fruitful experience gained by the Health Physics Group, FBTR are described in this paper. (author)

  17. 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

  18. Impact of ambient air pollution on physical activity among adults: a systematic review and meta-analysis.

    Science.gov (United States)

    An, Ruopeng; Zhang, Sheng; Ji, Mengmeng; Guan, Chenghua

    2018-03-01

    This study systematically reviewed literature regarding the impact of ambient air pollution on physical activity among children and adults. Keyword and reference search was conducted in PubMed and Web of Science to systematically identify articles meeting all of the following criteria - study designs: interventions or experiments, retrospective or prospective cohort studies, cross-sectional studies, and case-control studies; subjects: adults; exposures: specific air pollutants and overall air quality; outcomes: physical activity and sedentary behaviour; article types: peer-reviewed publications; and language: articles written in English. Meta-analysis was performed to estimate the pooled effect size of ambient PM 2.5 air pollution on physical inactivity. Seven studies met the inclusion criteria. Among them, six were conducted in the United States, and one was conducted in the United Kingdom. Six adopted a cross-sectional study design, and one used a prospective cohort design. Six had a sample size larger than 10,000. Specific air pollutants assessed included PM 2.5 , PM 10 , O 3 , and NO x , whereas two studies focused on overall air quality. All studies found air pollution level to be negatively associated with physical activity and positively associated with leisure-time physical inactivity. Study participants, and particularly those with respiratory disease, self-reported a reduction in outdoor activities to mitigate the detrimental impact of air pollution. Meta-analysis revealed a one unit (μg/m 3 ) increase in ambient PM 2.5 concentration to be associated with an increase in the odds of physical inactivity by 1.1% (odds ratio = 1.011; 95% confidence interval = 1.001, 1.021; p-value air pollution discouraged physical activity. Current literature predominantly adopted a cross-sectional design and focused on the United States. Future studies are warranted to implement a longitudinal study design and evaluate the impact of air pollution on physical

  19. 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.

  20. 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)

  1. 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

  2. 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

  3. Air pollution knows no boundaries: defining air catchment areas and making sense of physical and political boundaries in air quality management

    CSIR Research Space (South Africa)

    Scott, G

    2005-10-01

    Full Text Available Topics under discussion: Scales of transport and turbulence in the atmosphere; Examples of global, regional and local scale transports – concepts of an “air catchment”; Defining air quality management zones - international practice; Defining air...

  4. 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.

  5. 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.

  6. 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

  7. Canine Supply for Physical Security: An Analysis of the Royal Australian Air Force Military Working Dog Program

    Science.gov (United States)

    2016-03-01

    PHYSICAL SECURITY: AN ANALYSIS OF THE ROYAL AUSTRALIAN AIR FORCE MILITARY WORKING DOG PROGRAM by Mark W. Powell March 2016 Thesis...AN ANALYSIS OF THE ROYAL AUSTRALIAN AIR FORCE MILITARY WORKING DOG PROGRAM 5. FUNDING NUMBERS 6. AUTHOR(S) Mark W. Powell 7. PERFORMING...increased demand on its physical security elements. Its military working dog (MWD) workforce is required to meet an inventory of 204 by end of year 2023 as

  8. 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.

  9. 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

  10. 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.

  11. 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...

  12. The interdependence of professional and physical readiness for future officers of the Air Force

    Directory of Open Access Journals (Sweden)

    V.M. Krasota

    2013-12-01

    Full Text Available Purpose. Determination of interdependence of the initial level of formation and development of general and applied physical cadets’ qualities with the level of their preparedness for the performance of official functions and typical tasks of professional activity. Material, methods. 173 graduate cadets and 58 experts took part in the research. We used the following methods: theoretical analysis, generalization of scientific sources, ascertaining experiment, mathematical statistic. Results. Conducting of the ascertaining experiment allowed us to identify: the level of applied physical cadets' qualities formation is significantly lower than evaluative level of their general physical qualities: power by 0,27 points, speed by 0,44 points and aerobic endurance by 0,19 points; the strong straight correlation dependence (r=0,327 of the initial level of development of applied physical qualities of future officers of the Air Force with the level of their readiness to perform official functions and typical tasks of professional activity. Conclusions. The presence of significantly better formed applied physical characteristics of young officers with a high professional readiness level confirms the expediency to continue research in the chosen direction.

  13. Health physics experience with nondestructive X-radiation facilities in the US Air Force

    International Nuclear Information System (INIS)

    Stencel, J.R.; Piltingsrud, H.V.

    1976-01-01

    Radiation safety experience in the construction and use of enclosed nondestructive inspection (NDI) facilities in the US Air Force, has reaffirmed the constant need for the health physicist to continually monitor and assit in upgrading these facilities. Health physics contributions include evaluation of initial shielding requirements, proper selection of construction material, insuring that adequate safety devices are installed and adequate personnel dosimetry devices are available, surveying the facility, and assisting in the safety education program. There is a need to better define NDI warning/safety devices, using the National Bureau of Standards, (NBS) Handbook 107 as the most applicable guide

  14. 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.

  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. Preparation of activated carbons from olive-tree wood revisited. II. Physical activation with air

    Energy Technology Data Exchange (ETDEWEB)

    Ould-Idriss, A.; Cuerda-Correa, E.M.; Fernandez-Gonzalez, C.; Alexandre-Franco, M.F.; Gomez-Serrano, V. [Extremadura Univ., Badajoz (Spain). Dept. of Organic and Inorganic Chemistry; Stitou, M. [Univ. Abdelmalek Esaadi, Tetouan (Morocco). Dept. de Chimie; Macias-Garcia, A. [Extremadura Univ., Badajoz (Spain). Dept. of Mechanical, Energetic and Materials Engineering

    2011-02-15

    Olive-tree has been grown in the Mediterranean countries for centuries. For an adequate development of the tree it must be subjected to different treatments such as trimming, large amounts of a woody residue being produced. Such a residue has been traditionally used as a domestic fuel or simply burnt in the landfield. In both cases greenhouse gases are generated to a large extent. Thus, the preparation of activated carbons from olive-tree wood appears as an attractive alternative to valorize this by-product. Commonly, two activation strategies are used with such an aim, namely chemical and physical activation. In this study, the optimization of the physical activation method with air for the production of activated carbon has been analyzed. The results obtained clearly show that if the preparation conditions are adequately controlled, it is possible to prepare activated carbons showing tailored properties in terms of micro- or mesoporous texture and surface area. (author)

  17. 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.

  18. Swedish Environmental and Economic Accounts. Physical accounts for energy and emissions to air 1993 and 1995

    International Nuclear Information System (INIS)

    2000-01-01

    This Statistical Report presents results from the physical Swedish Environmental and Economic Accounts for the years 1993 and 1995 according to the classification NACE. The Environmental Economic Accounts constitute an integrated and comprehensive system for environmental and economic statistics. Environmental data are systematically presented together with economic data in a common framework. The system can be used for analyses of various relationships between economy and environment. Data on emissions to air of carbon dioxide, sulphur dioxide, nitrogen oxides, carbon monoxide, methane, nitrous oxide and ammonia are presented for 39 industries, government services and private consumption. The use of energy commodities in monetary and physical terms are also presented for the same sectors. Economic, energy and emission data are also presented in environmental and economic profiles and indicators. Environmental and economic profiles provide an illustration of the relationship between industry, consumption of energy commodities and emission to air. Indicators, that show e.g. emissions (in kg) by value added (in SEK) for economic activities, is another way to illustrate the relation between emissions and economic data

  19. Air Pollution Exposure and Physical Activity in China: Current Knowledge, Public Health Implications, and Future Research Needs

    Directory of Open Access Journals (Sweden)

    Jiaojiao Lü

    2015-11-01

    Full Text Available Deteriorating air quality in China has created global public health concerns in regard to health and health-related behaviors. Although emerging environmental regulations address ambient air pollution in China, the level of enforcement and long-term impact of these measures remain unknown. Exposure to air pollution has been shown to lead to multiple adverse health outcomes, including increased rates of heart disease and mortality. However, a lesser-known but increasingly significant concern is the relationship between air pollution and its effects on outdoor exercise. This is especially important in China, which has a culturally rooted lifestyle that encourages participation in outdoor physical activity. This article evaluates the intersection of air pollution and outdoor exercise and provides a discussion of issues related to its public health impact in China, where efforts to promote a healthy lifestyle may be adversely affected by the ambient air pollution that has accompanied rapid economic development and urbanization.

  20. Air Pollution Exposure and Physical Activity in China: Current Knowledge, Public Health Implications, and Future Research Needs.

    Science.gov (United States)

    Lü, Jiaojiao; Liang, Leichao; Feng, Yi; Li, Rena; Liu, Yu

    2015-11-20

    Deteriorating air quality in China has created global public health concerns in regard to health and health-related behaviors. Although emerging environmental regulations address ambient air pollution in China, the level of enforcement and long-term impact of these measures remain unknown. Exposure to air pollution has been shown to lead to multiple adverse health outcomes, including increased rates of heart disease and mortality. However, a lesser-known but increasingly significant concern is the relationship between air pollution and its effects on outdoor exercise. This is especially important in China, which has a culturally rooted lifestyle that encourages participation in outdoor physical activity. This article evaluates the intersection of air pollution and outdoor exercise and provides a discussion of issues related to its public health impact in China, where efforts to promote a healthy lifestyle may be adversely affected by the ambient air pollution that has accompanied rapid economic development and urbanization.

  1. 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.

  2. Evaluation of physical sampling efficiency for cyclone-based personal bioaerosol samplers in moving air environments.

    Science.gov (United States)

    Su, Wei-Chung; Tolchinsky, Alexander D; Chen, Bean T; Sigaev, Vladimir I; Cheng, Yung Sung

    2012-09-01

    The need to determine occupational exposure to bioaerosols has notably increased in the past decade, especially for microbiology-related workplaces and laboratories. Recently, two new cyclone-based personal bioaerosol samplers were developed by the National Institute for Occupational Safety and Health (NIOSH) in the USA and the Research Center for Toxicology and Hygienic Regulation of Biopreparations (RCT & HRB) in Russia to monitor bioaerosol exposure in the workplace. Here, a series of wind tunnel experiments were carried out to evaluate the physical sampling performance of these two samplers in moving air conditions, which could provide information for personal biological monitoring in a moving air environment. The experiments were conducted in a small wind tunnel facility using three wind speeds (0.5, 1.0 and 2.0 m s(-1)) and three sampling orientations (0°, 90°, and 180°) with respect to the wind direction. Monodispersed particles ranging from 0.5 to 10 μm were employed as the test aerosols. The evaluation of the physical sampling performance was focused on the aspiration efficiency and capture efficiency of the two samplers. The test results showed that the orientation-averaged aspiration efficiencies of the two samplers closely agreed with the American Conference of Governmental Industrial Hygienists (ACGIH) inhalable convention within the particle sizes used in the evaluation tests, and the effect of the wind speed on the aspiration efficiency was found negligible. The capture efficiencies of these two samplers ranged from 70% to 80%. These data offer important information on the insight into the physical sampling characteristics of the two test samplers.

  3. 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. ...

  4. 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...

  5. 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...

  6. Air pollution: what matters most? : Physical, chemical and oxidative properties of air pollution components related to toxic effects

    NARCIS (Netherlands)

    Steenhof, M.

    2015-01-01

    Numerous studies have been published on the adverse health effects associated with both short- and long-term exposure to air pollution. Air pollution is a heterogeneous, complex mixture of gases, liquids, and particulate matter (PM). Up to now, PM mass concentration has been the metric of choice to

  7. 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.

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

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    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

  9. Nuclear security standard: Argentina approach

    International Nuclear Information System (INIS)

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

    2007-01-01

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

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

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    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.

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

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    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

  12. SOCIOECONOMIC INEQUALITIES IN SELF-REPORTED HEALTH AND PHYSICAL FUNCTIONING IN ARGENTINA: FINDINGS FROM THE NATIONAL SURVEY ON QUALITY OF LIFE OF OLDER ADULTS 2012 (ENCaViAM).

    Science.gov (United States)

    Rodríguez López, Santiago; Colantonio, Sonia E; Celton, Dora E

    2017-09-01

    This study aimed to evaluate educational and income inequalities in self-reported health (SRH), and physical functioning (limitations in Activities of Daily Living (ADL)/Instrumental Activities of Daily Living (IADL)), among 60-year-old and older adults in Argentina. Using cross-sectional data from the Argentinian National Survey on Quality of Life of Older Adults 2012 (Encuesta Nacional sobre Calidad de Vida de Adultos Mayores, ENCaViAM), gender-specific socioeconomic inequalities in SRH and ADL and IADL limitations were studied in relation to educational level and household per capita income. The Relative Index of Inequality (RII) - an index of the relative size of socioeconomic inequalities in health - was used. Socioeconomic inequalities in the studied health indicators were found - except for limitations in ADL among women - favouring socially advantaged groups. The results remained largely significant after full adjustment, suggesting that educational and income inequalities, mainly in SRH and IADL, were robust and somehow independent of age, marital status, physical activity, the use of several medications, depression and the occurrence of falls. The findings add to the existing knowledge on the relative size of the socioeconomic inequalities in subjective health indicators among Argentinian older adults, which are to the detriment of lower socioeconomic groups. The results could be used to inform planning interventions aimed at decreasing socioeconomic inequalities in health, to the benefit of socially disadvantaged adults.

  13. 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

  14. Investigating cosmic rays and air shower physics with IceCube/IceTop

    Science.gov (United States)

    Dembinski, Hans

    2017-06-01

    IceCube is a cubic-kilometer detector in the deep ice at South Pole. Its square-kilometer surface array, IceTop, is located at 2800 m altitude. IceTop is large and dense enough to cover the cosmic-ray energy spectrum from PeV to EeV energies with a remarkably small systematic uncertainty, thanks to being close to the shower maximum. The experiment offers new insights into hadronic physics of air showers by observing three components: the electromagnetic signal at the surface, GeV muons in the periphery of the showers, and TeV muons in the deep ice. The cosmic-ray flux is measured with the surface signal. The mass composition is extracted from the energy loss of TeV muons observed in the deep ice in coincidence with signals at the surface. The muon lateral distribution is obtained from GeV muons identified in surface signals in the periphery of the shower. The energy spectrum of the most energetic TeV muons is also under study, as well as special events with laterally separated TeV muon tracks which originate from high-pT TeV muons. A combination of all these measurements opens the possibility to perform powerful new tests of hadronic interaction models used to simulate air showers. The latest results will be reviewed from this perspective.

  15. Investigating cosmic rays and air shower physics with IceCube/IceTop

    Directory of Open Access Journals (Sweden)

    Dembinski Hans

    2017-01-01

    Full Text Available IceCube is a cubic-kilometer detector in the deep ice at South Pole. Its square-kilometer surface array, IceTop, is located at 2800 m altitude. IceTop is large and dense enough to cover the cosmic-ray energy spectrum from PeV to EeV energies with a remarkably small systematic uncertainty, thanks to being close to the shower maximum. The experiment offers new insights into hadronic physics of air showers by observing three components: the electromagnetic signal at the surface, GeV muons in the periphery of the showers, and TeV muons in the deep ice. The cosmic-ray flux is measured with the surface signal. The mass composition is extracted from the energy loss of TeV muons observed in the deep ice in coincidence with signals at the surface. The muon lateral distribution is obtained from GeV muons identified in surface signals in the periphery of the shower. The energy spectrum of the most energetic TeV muons is also under study, as well as special events with laterally separated TeV muon tracks which originate from high-pT TeV muons. A combination of all these measurements opens the possibility to perform powerful new tests of hadronic interaction models used to simulate air showers. The latest results will be reviewed from this perspective.

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

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    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

  19. Illustrations and supporting texts for sound standing waves of air columns in pipes in introductory physics textbooks

    Directory of Open Access Journals (Sweden)

    Liang Zeng

    2014-07-01

    Full Text Available In our pilot studies, we found that many introductory physics textbook illustrations with supporting text for sound standing waves of air columns in open-open, open-closed, and closed-closed pipes inhibit student understanding of sound standing wave phenomena due to student misunderstanding of how air molecules move within these pipes. Based on the construct of meaningful learning from cognitive psychology and semiotics, a quasiexperimental study was conducted to investigate the comparative effectiveness of two alternative approaches to student understanding: a traditional textbook illustration approach versus a newly designed air molecule motion illustration approach. Thirty volunteer students from introductory physics classes were randomly assigned to two groups of 15 each. Both groups were administered a presurvey. Then, group A read the air molecule motion illustration handout, and group B read a traditional textbook illustration handout; both groups were administered postsurveys. Subsequently, the procedure was reversed: group B read the air molecule motion illustration handout and group A read the traditional textbook illustration handout. This was followed by a second postsurvey along with an exit research questionnaire. The study found that the majority of students experienced meaningful learning and stated that they understood sound standing wave phenomena significantly better using the air molecule motion illustration approach. This finding provides a method for physics education researchers to design illustrations for abstract sound standing wave concepts, for publishers to improve their illustrations with supporting text, and for instructors to facilitate deeper learning in their students on sound standing waves.

  20. 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

  1. 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.

  2. 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.

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

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    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.

  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

    2016-01-01

    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.

  5. [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.

  6. 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.

  7. 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...

  8. 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)

  9. 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 ...

  10. 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.

  11. 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.

  12. 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.)

  13. Abstracts of the 81. national meeting on physics of the Argentine Physics Association (AFA); Resumenes de las presentaciones de la 81. reunion nacional de fisica de la Asociacion Fisica Argentina (AFA)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-12-31

    Abstracts are presented at the 81 Annual meeting of the Argentine Physics Association (AFA). The papers can be grouped under the following main topics: teaching, history and philosophy of physics; classical and quantum physics: particles and fields; statistical physics and thermodynamics; nuclear physics; atomic and molecular physics; optic; fluid dynamics and plasmas; condensed matter; instrumentation; geophysics and astrophysics. refs., ills.

  14. 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.)

  15. 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.

  16. The association between ambient fine particulate air pollution and physical activity: a cohort study of university students living in Beijing.

    Science.gov (United States)

    Yu, Hongjun; Yu, Miao; Gordon, Shelby Paige; Zhang, Ruiling

    2017-10-05

    Air pollution has become a substantial environmental issue affecting human health and health-related behavior in China. Physical activity is widely accepted as a method to promote health and well-being and is potentially influenced by air pollution. Previous population-based studies have focused on the impact of air pollution on physical activity in the U.S. using a cross-sectional survey method; however, few have examined the impact on middle income countries such as China using follow-up data. The purpose of this study is to examine the impact of ambient fine particulate matter (PM 2.5 ) air pollution on physical activity among freshmen students living in Beijing by use of follow-up data. We conducted 4 follow-up health surveys on 3445 freshmen students from Tsinghua University from 2012 to 2013 and 2480 freshmen completed all 4 surveys. Linear individual fixed-effect regressions were performed based on repeated-measure physical activity-related health behaviors and ambient PM 2.5 concentrations among the follow-up participants. An increase in ambient PM 2.5 concentration by one standard deviation (44.72 μg/m 3 ) was associated with a reduction in 22.32 weekly minutes of vigorous physical activity (95% confidence interval [CI] = 24.88-19.77), a reduction in 10.63 weekly minutes of moderate physical activity (95% CI = 14.61-6.64), a reduction in 32.45 weekly minutes of moderate to vigorous physical activity (MVPA) (95% CI = 37.63-27.28), and a reduction in 226.14 weekly physical activity MET-minute scores (95% CI = 256.06-196.21). The impact of ambient PM 2.5 concentration on weekly total minutes of moderate physical activity tended to be greater among males than among females. Ambient PM 2.5 air pollution significantly discouraged physical activity among Chinese freshmen students living in Beijing. Future studies are warranted to replicate study findings in other Chinese cities and universities, and policy interventions are urgently needed to reduce air

  17. 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.

  18. Progress on Implementing Additional Physics Schemes into MPAS-A v5.1 for Next Generation Air Quality Modeling

    Science.gov (United States)

    The U.S. Environmental Protection Agency (USEPA) has a team of scientists developing a next generation air quality modeling system employing the Model for Prediction Across Scales – Atmosphere (MPAS-A) as its meteorological foundation. Several preferred physics schemes and ...

  19. 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.

  20. 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.

  1. 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...

  2. INDOOR AIR QUALITY IN HOSPITALS - Verification of the physical parameters of comfort and the concentration of carbon dioxide

    Directory of Open Access Journals (Sweden)

    Waldir Nagel Schirmer

    2010-10-01

    Full Text Available In hospitals, the presence of pollutants in the indoor air creates conditions that may prejudice the recovery of patients and affect the productivity of employees. Thus, these places need air conditioning well designed, to provide adequate ventilation rates to ensure the comfort of its occupants and the aseptic of environments. The present study focused on evaluating the indoor air quality (IAQ in a surgical center and an intensive care unit, by checking the physical parameters of comfort and the concentrations of carbon dioxide, following the procedure recommended by Resolution No. 09 of the National Sanitary Surveillance Agency (ANVISA and to propose an air conditioning system for each of the environments evaluated. The results showed that the IAQ in those environments may be improved, since some of the parameters showed values higher than those recommended by that resolution. High concentrations of CO2 obtained, for example, can be justified by the lack of renewal of air. It is suggested that the air conditioning systems must to be substituted for that allowed the renewal of the air at rates acceptable to the current legislation.

  3. 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.

  4. 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.

  5. 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)

  6. 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)

  7. 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.

  8. MP3 - A Meteorology and Physical Properties Package to explore Air:Sea interaction on Titan

    Science.gov (United States)

    Lorenz, R. D.

    2012-04-01

    The exchange of mass, heat and momentum at the air:sea interface are profound influences on our environment. Titan presents us with an opportunity to study these processes in a novel physical context. The MP3 instrument, under development for the proposed Discovery mission TiME (Titan Mare Explorer) is an integrated suite of small, simple sensors that combines the a traditional meteorology package with liquid physical properties and depth-sounding. In TiME's 6-Titan-day (96-day) nominal mission, MP3 will have an extended measurement opportunity in one of the most evocative environments in the solar system. The mission and instrument benefit from APL's expertise and experience in marine as well as space systems. The topside meteorology sensors (METH, WIND, PRES, TEMP) will yield the first long-duration in-situ data to constrain Global Circulation Models. The sea sensors (TEMP, TURB, DIEL, SOSO) allow high cadence bulk composition measurements to detect heterogeneities as the TiME capsule drifts across Ligeia, while a depth sounder (SONR) will measure the bottom profile. The combination of these sensors (and vehicle dynamics, ACCL) will characterize air:sea exchange. In addition to surface data, a measurement subset (ACCL, PRES, METH, TEMP) is made during descent to characterize the structure of the polar troposphere and marine boundary layer. A single electronics box inside the vehicle performs supervising and data handling functions and is connected to the sensors on the exterior via a wire and fiber optic harness. ACCL: MEMS accelerometers and angular rate sensors measure the vehicle motion during descent and on the surface, to recover wave amplitude and period and to correct wind measurements for vehicle motion. TEMP: Precision sensors are installed at several locations above and below the 'waterline' to measure air and sea temperatures. Installation of topside sensors at several locations ensures that at least one is on the upwind side of the vehicle. PRES: The

  9. 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

  10. 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

  11. 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)

  12. Argentina's radioactive waste disposal policy

    International Nuclear Information System (INIS)

    Palacios, E.

    1986-01-01

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

  13. 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.

  14. The sound of oscillating air jets: Physics, modeling and simulation in flute-like instruments

    Science.gov (United States)

    de La Cuadra, Patricio

    Flute-like instruments share a common mechanism that consists of blowing across one open end of a resonator to produce an air jet that is directed towards a sharp edge. Analysis of its operation involves various research fields including fluid dynamics, aero-acoustics, and physics. An effort has been made in this study to extend this description from instruments with fixed geometry like recorders and organ pipes to flutes played by the lips. An analysis of the jet's response to a periodic excitation is the focus of this study, as are the parameters under the player's control in forming the jet. The jet is excited with a controlled excitation consisting of two loudspeakers in opposite phase. A Schlieren system is used to visualize the jet, and image detection algorithms are developed to extract quantitative information from the images. In order to study the behavior of jets observed in different flute-like instruments, several geometries of the excitation and jet shapes are studied. The obtained data is used to propose analytical models that correctly fit the observed measurements and can be used for simulations. The control exerted by the performer on the instrument is of crucial importance in the quality of the sound produced for a number of flute-like instruments. The case of the transverse flute is experimentally studied. An ensemble of control parameters are measured and visualized in order to describe some aspects of the subtle control attained by an experienced flautist. Contrasting data from a novice flautist are compared. As a result, typical values for several non-dimensional parameters that characterize the normal operation of the instrument have been measured, and data to feed simulations has been collected. The information obtained through experimentation is combined with research developed over the last decades to put together a time-domain simulation. The model proposed is one-dimensional and driven by a single physical input. All the variables in the

  15. Evaluation of physical property of light-weight soil with air foam using X-ray CT method

    International Nuclear Information System (INIS)

    Otani, Jun; Mukunoki, Toshifumi; Kikuchi, Yoshiaki

    2000-01-01

    The objective of this paper is to investigate the physical property of light-weight soil made of dredged slurry mixed with air foam and cement using X-ray CT method. In this study, not only the specimen made in laboratory but also the one sampled at the in-situ construction site were used and the property in the soil was visualized and the distributions of the density an air porosity were evaluated quantitatively using the results of CT scanning. Here, the method of image processing analysis was also used for this evaluation study. Based on the results obtained in this study, it is concluded that the X-ray CT method is a powerful tool even for geotechnical engineering and this makes not only the visualization but also the quantitative ion discussion possible for the light-weight soil with air foam. (author)

  16. 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)

  17. UW Imaging of Seismic-Physical-Models in Air Using Fiber-Optic Fabry-Perot Interferometer.

    Science.gov (United States)

    Rong, Qiangzhou; Hao, Yongxin; Zhou, Ruixiang; Yin, Xunli; Shao, Zhihua; Liang, Lei; Qiao, Xueguang

    2017-02-17

    A fiber-optic Fabry-Perot interferometer (FPI) has been proposed and demonstrated for the ultrasound wave (UW) imaging of seismic-physical models. The sensor probe comprises a single mode fiber (SMF) that is inserted into a ceramic tube terminated by an ultra-thin gold film. The probe performs with an excellent UW sensitivity thanks to the nanolayer gold film, and thus is capable of detecting a weak UW in air medium. Furthermore, the compact sensor is a symmetrical structure so that it presents a good directionality in the UW detection. The spectral band-side filter technique is used for UW interrogation. After scanning the models using the sensing probe in air, the two-dimensional (2D) images of four physical models are reconstructed.

  18. 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.

  19. 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 ...

  20. 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.

  1. 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.

  2. 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...

  3. 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.

  4. Overview of Twenty Years of Radiation and Tissue Banking Activity in Argentina

    International Nuclear Information System (INIS)

    Kairiyama, E.

    2015-01-01

    Radiation sterilization of human tissues in Argentina was a consequence of health care products sterilization by gamma radiation. Radiation technology was implemented in 1970 when the first multipurpose gamma facility was built at the Ezeiza Atomic Centre of CNEA. Organ and tissue transplantation is a well established effective therapy that saves lives and significantly improves the quality of life. Ionizing radiation is used for sterilization in order to provide clinically safe tissue for therapeutic purposes of implantation in every patient in need. Argentina radiation and tissue banking activity started in 1993 with the establishment of two tissue banks using radiation under the IAEA programme of technical cooperation, a skin bank and a bone one. Additionally to this start, other tissue banks have adopted tissue sterilization by irradiation. The compatible tissues sterilized with this methodology are mainly skin (frozen, glycerolized), bone (lyophilized, frozen), and amniotic membrane (glycerolized, frozen, dehydrated). The donation and transplant of human organ, tissue and cells is regulated and coordinated by the National Institute Unique Central Coordinator of Ablation and Implant (INCUCAI). In regards to radiation and nuclear safety, physical protection and nuclear non-proliferation issues are regulated and contorted by the Nuclear Regulatory Authority (ARN). Eight tissue banks use gamma radiation for sterilization of human tissues (6 musculoskeletal, 1 skin and 1 amniotic membrane). Argentina has participated actively in several IAEA projects regarding radiation and tissue banking program, and it has been selected by the IAEA to host the Regional Training Centre for the Latin American region. The following activities were implemented: regional training courses in Buenos Aires, face to face (five) and virtual (four) modalities; collaboration on several materials related to tissue banking and radiation sterilization of tissue allograft, codes of practice for

  5. 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

  6. 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.

  7. 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)

  8. Is physical activity a modifier of the association between air pollution and arterial stiffness in older adults: The SAPALDIA cohort study.

    Science.gov (United States)

    Endes, Simon; Schaffner, Emmanuel; Caviezel, Seraina; Dratva, Julia; Stolz, Daiana; Schindler, Christian; Künzli, Nino; Schmidt-Trucksäss, Arno; Probst-Hensch, Nicole

    2017-08-01

    Air pollution and insufficient physical activity have been associated with inflammation and oxidative stress, molecular mechanisms linked to arterial stiffness and cardiovascular disease. There are no studies on how physical activity modifies the association between air pollution and arterial stiffness. We examined whether the adverse cardiovascular effects of air pollution were modified by individual physical activity levels in 2823 adults aged 50-81 years from the well-characterized Swiss Cohort Study on Air Pollution and Lung and Heart Diseases (SAPALDIA). We assessed arterial stiffness as the brachial-ankle pulse wave velocity (baPWV [m/s]) with an oscillometric device. We administered a self-reported physical activity questionnaire to classify each subject's physical activity level. Air pollution exposure was estimated by the annual average individual home outdoor PM 10 and PM 2.5 (particulate matter air pollution exposure and physical activity while adjusting for relevant confounders. We found evidence that the association of air pollution exposure with baPWV was different between inactive and active participants. The probability of having increased baPWV was significantly higher with higher PM 10 , PM 2.5 , NO 2 , PNC and LDSA exposure in inactive, but not in physically active participants. We found some evidence of an interaction between physical activity and ambient air pollution exposure for PM 10 , PM 2.5 and NO 2 (p interaction =0.06, 0.09, and 0.04, respectively), but not PNC and LDSA (p interaction =0.32 and 0.35). Our study provides some indication that physical activity may protect against the adverse vascular effects of air pollution in low pollution settings. Additional research in large prospective cohorts is needed to assess whether the observed effect modification translates to high pollution settings in mega-cities of middle and low-income countries. Copyright © 2017 Elsevier GmbH. All rights reserved.

  9. Physical aerosol properties and their relation to air mass origin at Monte Cimone (Italy during the first MINATROC campaign

    Directory of Open Access Journals (Sweden)

    R. Van Dingenen

    2005-01-01

    Full Text Available Aerosol physical properties were measured at the Monte Cimone Observatory (Italy from 1 June till 6 July 2000. The measurement site is located in the transition zone between the continental boundary layer and the free troposphere (FT, at the border between the Mediterranean area and Central Europe, and is exposed to a variety of air masses. Sub-μm number size distributions, aerosol hygroscopicity near 90% RH, refractory size distribution at 270°C and equivalent black carbon mass were continuously measured. Number size distributions and hygroscopic properties indicate that the site is exposed to aged continental air masses, however during daytime it is also affected by upslope winds. The mixing of this transported polluted boundary layer air masses with relatively clean FT air leads to frequent nucleation events around local noon. Night-time size distributions, including fine and coarse fractions for each air mass episode, have been parameterized by a 3-modal lognormal distribution. Number and volume concentrations in the sub-μm modes are strongly affected by the air mass origin, with highest levels in NW-European air masses, versus very clean, free tropospheric air coming from the N-European sector. During a brief but distinct dust episode, the coarse mode is clearly enhanced. The observed hygroscopic behavior of the aerosol is consistent with the chemical composition described by Putaud et al. (2004, but no closure between known chemical composition and measured hygroscopicity could be made because the hygroscopic properties of the water-soluble organic matter (WSOM are not known. The data suggest that WSOM is slightly-to-moderately hygroscopic (hygroscopic growth factor GF at 90% relative humidity between 1.05 and 1.51, and that this property may well depend on the air mass origin and history. External mixing of aerosol particles is observed in all air masses through the occurrence of two hygroscopicity modes (average GF of 1.22 and 1

  10. 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

  11. 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)

  12. 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

  13. Queratitis por Acanthamoeba sp.: primer caso confirmado por aislamiento y tipificación molecular en Bahía Blanca, provincia de Buenos Aires, Argentina Acanthamoeba sp. keratitis: first case confirmed by isolation and molecular typification in Bahía Blanca, Buenos Aires Province, Argentina

    Directory of Open Access Journals (Sweden)

    M. L. Gertiser

    2010-06-01

    . Isolated amoebae were morphologically and molecularly classified as members of the Acanthamoeba genus. This is the first case of keratitis caused by Acanthamoeba in Bahía Blanca, Buenos Aires Province, where the parasite was identified by specific and sensitive molecular techniques.

  14. The health crisis in Argentina.

    Science.gov (United States)

    Escudero, José Carlos

    2003-01-01

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

  15. Operating practical experience at Argentina

    International Nuclear Information System (INIS)

    Quihillalt, Oscar

    1997-01-01

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

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

    OpenAIRE

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

    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 varani...

  17. Argentina: Political and Economic Conditions and U.S. Relations

    Science.gov (United States)

    2006-10-12

    left office six months before his six-year term ended, letting the winner of the 1989 election, Carlos Menem of the Justicialist Party (PJ, or the...Peronist Party), take office early. Menem transformed Argentina from a state-dominated protectionist economy to one committed to free market principles...term. Duhalde, who had been Vice President under Menem from 1989-1991, Governor of the Buenos Aires province, and the PJ’s 1999 presidential candidate

  18. Sátira, caricatura y parodia en la Argentina de fines del siglo XIX. Un caso paradigmático: el periódico "Don Quijote" (1884-1903, de Buenos Aires

    Directory of Open Access Journals (Sweden)

    Lic. María Ximena Avila

    2000-01-01

    Full Text Available estudio se fundamenta en una investigación histórico-periodística que da cuenta de las condiciones socio-culturales, las luchas políticas, la participación de los sujetos sociales en la historia argentina de 1890. El periódico Don Quijote es un órgano partidario opositor al gobierno nacional, de un grupo político "el radicalismo" que, a partir de 1890, surge como voz disidente que intentaba proponerse como una alternativa a la hegemonía de los partidos conservadores.

  19. Segio Federowsky. El medioambiente no le importa a nadie. Bestialidades ecológicas en la Argentina: del Riachuelo a las Papeleras : Editorial Planeta, Buenos Aires, 2007, 272 páginas

    OpenAIRE

    Tram[p]as de la Comunicación y la Cultura

    2008-01-01

    Desde un enfoque más genérico y no abocado exclusivamente a sus vínculos con el proceso comunicacional, el biólogo y periodista Sergio Federovisky publicó El medio ambiente no le importa a nadie. Bestialidades ecológicas en la Argentina: del Riachuelo a las Papeleras. Tras un prólogo del jurista Daniel Sabsay, titular de la Fundación Ambiente y Recursos Naturales (FARN), el autor se interroga: “¿Cómo es posible que todo el mundo diga que hay que cuidar el medio ambiente, que hay que proteger ...

  20. Measurements in the Forward Phase-Space with the CMS Experiment and their Impact on Physics of Extensive Air Showers

    CERN Document Server

    AUTHOR|(CDS)2083313; Quast, Günter; Ulrich, Ralf

    2015-11-18

    The astrophysical interpretation of ultra-high energy cosmic rays is based on detection of extensive air showers in indirect measurements. Hadronic interaction models that are needed for such analyses require parameters to be adjusted to collider data since soft particle production cannot be calculated from first principles. Within this work, the program CRMC was developed that unifies all air shower hadronic interaction models and supports the output formats used by collider experiments. Almost all LHC experiments have adopted the use these hadronic interaction models thanks to CRMC. The program can even be used in detector simulations to make direct comparison to reconstructed quantities from which the cosmic ray and the particle physics communities benefit immensely. Furthermore, nuclear effects were studied with the CMS experiments at the LHC. The production cross section was derived in recent proton-lead collision data at sqrt(s(NN)) = 5.02 TeV in order to study nuclear effects. The measurement constrain...

  1. The film tells the story: Physical-chemical characteristics of IgG at the liquid-air interface.

    Science.gov (United States)

    Koepf, Ellen; Schroeder, Rudolf; Brezesinski, Gerald; Friess, Wolfgang

    2017-10-01

    The presence of liquid-air interfaces in protein pharmaceuticals is known to negatively impact product stability. Nevertheless, the mechanisms behind interface-related protein aggregation are not yet fully understood. Little is known about the physical-chemical behavior of proteins adsorbed to the interface. Therefore, the combinatorial use of appropriate surface-sensitive analytical methods such as Langmuir trough experiments, Infrared Reflection-Absorption Spectroscopy (IRRAS), Brewster Angle Microscopy (BAM), and Atomic Force Microscopy (AFM) is highly expedient to uncover structures and events at the liquid-air interface directly. Concentration-dependent adsorption of a human immunoglobulin G (IgG) and characteristic surface-pressure/area isotherms substantiated the amphiphilic nature of the protein molecules as well as the formation of a compressible protein film at the liquid-air interface. Upon compression, the IgG molecules do not readily desorb but form a highly compressible interfacial film. IRRA spectra proved not only the presence of the protein at the interface, but also showed that the secondary structure does not change considerably during adsorption or compression. IRRAS experiments at different angles of incidence indicated that the film thickness and/or packing density increases upon compression. Furthermore, BAM images exposed the presence of a coherent but heterogeneous distribution of the protein at the interface. Topographical differences within the protein film after adsorption, compression and decompression were revealed using underwater AFM. The combinatorial use of physical-chemical, spectroscopic and microscopic methods provided useful insights into the liquid-air interfacial protein behavior and revealed the formation of a continuous but inhomogeneous film of native-like protein molecules whose topographical appearance is affected by compressive forces. Copyright © 2017 Elsevier B.V. All rights reserved.

  2. Physical activity profile of 2014 FIFA World Cup players, with regard to different ranges of air temperature and relative humidity

    Science.gov (United States)

    Chmura, Paweł; Konefał, Marek; Andrzejewski, Marcin; Kosowski, Jakub; Rokita, Andrzej; Chmura, Jan

    2017-04-01

    The present study attempts to assess changes in soccer players' physical activity profiles under the simultaneous influence of the different combinations of ambient temperature and relative humidity characterising matches of the 2014 FIFA World Cup hosted by Brazil. The study material consisted of observations of 340 players representing 32 national teams taking part in the tournament. The measured indices included total distances covered; distances covered with low, moderate, or high intensity; numbers of sprints performed, and peak running speeds achieved. The analysis was carried out using FIFA official match data from the Castrol Performance Index system. Ultimately, consideration was given to a combination of three air temperature ranges, i.e. below 22 °C, 22-28 °C, and above 28 °C; and two relative humidity ranges below 60 % and above 60 %. The greatest average distance recorded (10.54 ± 0.91 km) covered by players at an air temperature below 22 °C and a relative humidity below 60 %, while the shortest (9.83 ± 1.08 km) characterised the same air temperature range, but conditions of relative humidity above 60 % ( p ≤ 0.001). Two-way ANOVA revealed significant differences ( p ≤ 0.001) in numbers of sprints performed by players, depending on whether the air temperature range was below 22 °C (40.48 ± 11.17) or above 28 °C (30.72 ± 9.40), but only where the relative humidity was at the same time below 60 %. Results presented indicate that the conditions most comfortable for physical activity on the part of players occur at 22 °C, and with relative humidity under 60 %.

  3. Yugoslav teachers in Argentina 1939-1944

    Directory of Open Access Journals (Sweden)

    Stefanović-Banović Milesa

    2014-01-01

    Full Text Available In this paper we present reports of Yugoslav teachers who held classes to immigrants in Argentina 1939-1944, organized by the government of Kingdom of Yugoslavia. Teachers’ reports to Yugoslav Embassy in Buenos Aires testify of Kingdom of Yugoslavia efforts to oppose assimilation and promote and strengthen “Yugoslav national unity”. The reports also describe general social circumstances of Yugoslav immigrants, show various details from their everyday life and contain valuable data on numerous political, economic, social and cultural problems of this diaspora in Argentina and their relationship with motherland. We believe that archive materials presented in this paper opens numerous questions which could be topics of separate researches. Some of them could be the following: To which extent the teachers’ reports represented the actual situation and to which they were shaped to match policy and expectations of Kingdom of Yugoslavia? What was the actual influence of teachers to spreading the “national unity” among immigrants? Have their work left trace in Yugoslav diaspora and in which way? Beside all of the open issues, it is certain that teachers’ reports contain valuable data on immigrants’ everyday life, curriculum, schooling conditions, relationship with motherland, etc. [Projekat Ministarstva nauke Republike Srbije, br. 47016: Interdisciplinarno istraživanje kulturnog i jezičkog nasleđa Srbije. Izrada multimedijalnog internet portala "Pojmovnik srpske kulture"

  4. [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.

  5. International Uranium Resources Evaluation Project (IUREP) national favourability studies: Argentina

    International Nuclear Information System (INIS)

    1977-08-01

    Argentina is a predominantly lowland area of 2,789,240 square kilometers. The capital is Buenos Aires. The entire length of Argentina is bordered on the west by the Andes Mountains. Tile Northwest Andes-Piedmont region consists of deep valleys containing salt basins and volcanoes, and is an earthquake zone. Patagonia, in the south, is essentially an arid region of windy plateaus and valleys. The southern Andes are narrower and lower than the northern Andes and in the extreme south contain glaciers and ice fields. The east-central plain (Pampa) of Argentina has dry and humid sectors and contains most of the population. The largest rivers are chiefly in the northeast, many having only seasonal flow. There has been extensive surface and subsurface exploration for uranium in Argentina for over 20 years. Although most of the work has been performed by the CNEA, advisors from the U.S. and from the IAEA have also taken part. Private industry has been involved, but apparently only on a small scale. In the OECD report of 1970, it was stated that 400,000 square kilometers of Argentina appear very favorable for uranium while an additional 900,000 square kilometers offer fair possibilities. Uranium exploration to date suggests that sandstones of Permian and Cretaceous ages exposed in Western Argentina in the Cordillera are very promising for discovery of new deposits. Past CNEA estimates have indicated that there is considerable hope for new discoveries in those areas where reserves are now known. In addition to the known uraniferous provinces which are indeed favorable for further exploration, there are several other large areas that warrant attention. There are, for example, in the Santa Cruz area of about 15,500 square kilometers Cretaceous and Tertiary sediments with favorable facies for uranium deposition. In the Patagonia Cordillera, Jurassic, Cretaceous, and Tertiary sediments are of interest for prospecting, These rocks contain carbonaceous material and have been

  6. Using Noble Gas Measurements to Derive Air-Sea Process Information and Predict Physical Gas Saturations

    Science.gov (United States)

    Hamme, Roberta C.; Emerson, Steven R.; Severinghaus, Jeffrey P.; Long, Matthew C.; Yashayaev, Igor

    2017-10-01

    Dissolved gas distributions are important because they influence oceanic habitats and Earth's climate, yet competing controls by biology and physics make gas distributions challenging to predict. Bubble-mediated gas exchange, temperature change, and varying atmospheric pressure all push gases away from equilibrium. Here we use new noble gas measurements from the Labrador Sea to demonstrate a technique to quantify physical processes. Our analysis shows that water-mass formation can be represented by a quasi steady state in which bubble fluxes and cooling push gases away from equilibrium balanced by diffusive gas exchange forcing gases toward equilibrium. We quantify the rates of these physical processes from our measurements, allowing direct comparison to gas exchange parameterizations, and predict the physically driven saturation of other gases. This technique produces predictions that reasonably match N2/Ar observations and demonstrates that physical processes should force SF6 to be ˜6% more supersaturated than CFC-11 and CFC-12, impacting ventilation age calculations.

  7. Application and optimisation of air-steam cooking on selected vegetables: impact on physical and antioxidant properties.

    Science.gov (United States)

    Paciulli, Maria; Dall'Asta, Chiara; Rinaldi, Massimiliano; Pellegrini, Nicoletta; Pugliese, Alessandro; Chiavaro, Emma

    2018-04-01

    Several studies investigated the impact of different cooking techniques on the quality of vegetables. However, the use of the combined air-steam cooking is still scarcely debated, despite the advantages informally referred by professional catering workers. In this study, its optimisation was studied on Brussels sprouts and pumpkin cubes to obtain the best physical (texture, colour) and antioxidant (FRAP, total phenols) response, in comparison to a conventional steaming treatment. Increasing the strength of the air-steam treatment, Brussels sprouts resulted to be softer, less green (higher a* value), richer in phenols and exhibited lower FRAP values than the steamed ones. The air-steamed pumpkin cubes exhibited an equivalent softening degree to that of steamed ones and, under the strongest cooking conditions, a higher antioxidant quality and a yellow darkening (lower b* value). Varying the cooking time and/or temperature, a linear change of force/compression hardness and a* (negative a*: greenness) for Brussels sprouts, b* (yellowness) and total phenol content for pumpkin cubes was observed. A predictive model for these variables was obtained by response surface methodology. The best process conditions to achieve the optimal desirability were also identified. The application of air-steam cooking under suitable time/temperature conditions could be proposed as an alternative method to a traditional steam cooking on Brussels sprouts and pumpkin cubes, being able to preserve or improve their quality. The best air-steam cooking conditions were 25 min at 90 °C for Brussels sprouts and 10 min at 110 °C for pumpkin. © 2017 Society of Chemical Industry. © 2017 Society of Chemical Industry.

  8. The Predictive Factors of the Promotion of Physical Activity by Air Force Squadron Commanders

    National Research Council Canada - National Science Library

    Whelan, Dana

    2001-01-01

    .... Web based surveys were completed by 178 commanders at bases world-wide. Positive correlations were observed between physical activity and both personal benefit beliefs and organizational benefit beliefs (.417 and .298, p < .001, respectively...

  9. Scientific production on indoor air quality of environments used for physical exercise and sports practice: Bibliometric analysis.

    Science.gov (United States)

    Andrade, Alexandro; Dominski, Fábio Hech; Coimbra, Danilo Reis

    2017-07-01

    In order to minimize adverse health effects and increase the benefits of physical activity, it is important to systematize indoor air quality study in environments used for physical exercise and sports. To investigate and analyze the scientific production related to indoor air quality of environments used for physical exercise and sports practice through a bibliometric analysis. The databases Scielo, Science Direct, Scopus, Lilacs, Medline via Pubmed, and SportDiscus were searched from their inception to March 2016. Bibliometric analysis was performed for authors, institutions, countries, and collaborative networks, in relation to publication year, theme, citation network, funding agency, and analysis of titles and keywords of publications. Country, area, and impact factor of the journals were analyzed. Of 1281 studies screened, 34 satisfied the inclusion criteria. The first publication occurred in 1975. An increase in publications was observed in the last 15 years. Most of the studies were performed by researchers in the USA, followed by Portugal and Italy. Seventeen different scientific journals have published studies on the subject, and most are in the area of Environmental Sciences. It was noted that the categories of author keywords associated with "Pollutants," "Sport Environment," and "Physical Exercise" were the most commonly used in most studies. A total of 68% of the studies had at least one funding agency, and 81% of studies published in the last decade had funding. Our results demonstrate that there is recent exponential growth, driven in the last decade by researchers in environmental science from European institutions. Copyright © 2017 Elsevier Ltd. All rights reserved.

  10. A study of the physical factors affecting air pollution dispersion in Helwan

    International Nuclear Information System (INIS)

    Megahed, A.A.

    1992-01-01

    Air pollution is considered as one of the most important environmental problems facing the humanity. Cement industry, usually, is responsible for building high levels of pollutants. The present research focused on the study of air pollution control of cement industry using mathematical modeling. A mathematical dispersion model was developed based on Gaussian distribution where the dispersion parameters increase with increasing atmospheric turbulence. The Gaussian equation takes in consideration the effect of emission rates. stack height, buoyant plume rise, weather and meteorological parameters. The model was tested for different stack heights, wind speeds. And atmospheric stability classes. Maximum ground level concentration of cement pollutants were measured in different locations of Helwan, south Cairo around the cement factories. Analysis of results shows that the ground level of pollutants concentrations are inversely proportional to wind speed and atmospheric stability classes. Stack height also affects the behaviour of deposition of cement particulates. The model results show satisfactory agreement with the measured concentrations. 6 figs

  11. Norm survey in Argentina

    International Nuclear Information System (INIS)

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

    2008-01-01

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

  12. Indoor air purification by dielectric barrier discharge combined with ionic wind: physical and microbiological investigations

    Science.gov (United States)

    Timmermann, E.; Prehn, F.; Schmidt, M.; Höft, H.; Brandenburg, R.; Kettlitz, M.

    2018-04-01

    A non-thermal plasma source based on a surface dielectric barrier discharge (DBD) is developed for purification of recirculating air in operating theatres in hospitals. This is a challenging application due to high flow rates, short treatment times and the low threshold for ozone in the ventilated air. Therefore, the surface DBD was enhanced in order to generate an ionic wind, which can deflect and thus, filter out airborne microorganisms. Electrical and gas diagnostics as well as microbiological experiments were performed in a downscaled plasma source under variation of various electrical parameters, but application-oriented airflow velocity and humidity. The dependence of electrical power and ozone concentration as well as charged particles in the plasma treated air on frequency, voltage and relative humidity is presented and discussed. The presence of humidity causes a more conductive dielectric surface and thus a weaker plasma formation, especially at low frequency. The airborne test bacteria, Escherichia coli, showed significant effect to plasma treatment (up to 20% reduction) and to plasma with ionic wind (up to 90% removal); especially a configuration with 70% removal and an accompanying ozone concentration of only 360 ppb is promising for future application.

  13. Vicarious calibration campaign in Argentina for radiometric calibration of a multispectral imager onboard sumbandila satellite

    CSIR Research Space (South Africa)

    Griffith, DJ

    2011-07-01

    Full Text Available Espaciales (CONAE), Centro de Investigaciones ?pticas (CIOP), from Consejo Nacional deInvestigaciones Cient?ficas y T?cnicas (CONICET) and Comisi?n de Investigaciones Cient?ficas de la Provincia de Buenos Aires (CIC) Facultad de Ciencias Agrarias y... Cient?ficas de la Provincia de Buenos Aires (CIC) Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata (FCAyF, UNLP) in Argentina for help in our Argentina field campaign. The authors thank the CSIR, DST and CONAE for funding...

  14. Coccocypselum pulchellum (Rubiaceae, nuevo registro para Argentina

    Directory of Open Access Journals (Sweden)

    Elsa L. Cabral

    2007-01-01

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

  15. 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

  16. 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

  17. Country watch. Argentina.

    Science.gov (United States)

    Perez, P

    1994-01-01

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

  18. Argentina and Brazil

    International Nuclear Information System (INIS)

    Gamba-Stonehouse, V.

    1991-01-01

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

  19. Pampa Húmeda, Argentina

    Directory of Open Access Journals (Sweden)

    Néstor C. Di Leo

    2007-01-01

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

  20. QGSJET-II: physics, recent improvements, and results for air showers

    Directory of Open Access Journals (Sweden)

    Ostapchenko S.

    2013-06-01

    Full Text Available Modeling of high energy hadronic and nuclear interactions by the QGSJET-II generator is discussed. Recent updates related to the treatment of nonlinear effects inthe interaction dynamics and to the model calibration with new LHC data are described. A special attention is devoted to the predictions of the new model version forcharacteristics of extensive air showers initiated by high energy cosmic rays. In particular, an improved description of charge exchange processes in pion collisionsis discussed and the respective enhancement of the shower muon content is analyzed.

  1. Crisis de la prensa Argentina

    Directory of Open Access Journals (Sweden)

    Federico Rey Lennon

    2015-01-01

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

  2. PHYSICAL EXCHANGES AT THE AIR-SEA INTERFACE UK-SOLAS Field Measurements

    NARCIS (Netherlands)

    Brooks, Ian M.; Yelland, Margaret J.; Upstill-Goddard, Robert C.; Nightingale, Philip D.; Archer, Steve; d'Asaro, Ericic; Beale, Rachael; Beatty, Cory; Blomquist, Byron; Bloom, A. Anthony; Brooks, Barbara J.; Cluderay, John; Coles, David; Dacey, John; DeGrandpre, Michael; Dixon, Jo; Drennan, William M.; Gabriele, Joseph; Goldson, Laura; Hardman-Mountford, Nick; Hill, Martin K.; Horn, Matt; Hsueh, Ping-Chang; Huebert, Barry; de Leeuw, Gerrit; Leighton, Timothy G.; Liddicoat, Malcolm; Lingard, Justin J. N.; McNeil, Craig; McQuaid, James B.; Moat, Ben I.; Moore, Gerald; Neill, Craig; Norris, Sarah J.; O'Doherty, Simon; Pascal, Robin W.; Prytherch, John; Rebozo, Mike; Sahlee, Erik; Salter, Matt; Schuster, Ute; Skjelvan, Ingunn; Slagter, Hans; Smith, Michael H.; Smith, Paul D.; Srokosz, Meric; Stephens, John A.; Taylor, Peter K.; Telszewski, Maciej; Walsh, Roisin; Ward, Brian; Woolf, David K.; Young, Dickon; Zemmelink, Henk

    As part of the U. K. contribution to the international Surface Ocean-Lower Atmosphere Study, a series of three related projects-DOGEE, SEASAW, and HiWASE-undertook experimental studies of the processes controlling the physical exchange of gases and sea spray aerosol at the sea surface. The studies

  3. Health care for older persons in Argentina: a country profile.

    Science.gov (United States)

    Montero-Odasso, Manuel; Przygoda, Pablo; Redondo, Nélida; Adamson, Juan; Kaplan, Roberto

    2004-10-01

    Argentina is a large country situated at the southern end of the Americas. It is highly urbanized, and almost one-third of the population lives in the capital city and its surrounding area (Buenos Aires). The population is composed of heterogeneous groups, formed primarily by descendants of European immigration who constitute 85% of the inhabitants. In the last 30 years, Argentina has witnessed a growth in the elderly population from less than 7% to nearly 10% of the total population. Additionally, in Buenos Aires City, more than 17% are aged 65 or older. The healthcare systems for the elderly lack nationwide coverage. The Programa de Atención Médica Integral (PAMI) is the largest program for elderly care. It is a state-run program for disabled and senior citizens. PAMI serves 65% of the approximately 3.6 million older people in Argentina. The quality of PAMI healthcare delivery has decreased in the last 2 decades and has largely declined since the Argentinean economic crisis of late 2001. The rehabilitation and long-term care services are relatively underdeveloped, and fewer than 2% of senior citizens live in residential or nursing homes. Recently, the government has proposed a system of care built up from the primary care resources of the community.

  4. China's Expansion Into and U.S. Withdrawal from Argentina's Telecommunications and Space Industries and the Implications for U.S. National Security

    National Research Council Canada - National Science Library

    Hulse, Janie

    2007-01-01

    ... up. In this monograph, Ms. Janie Hutse, a Latin Amen can specialist based in Buenos Aires, Argentina, argues that increased Chinese investment in regional telecommunications and space industries has implications for U.S. national security...

  5. Investigating the physics performance of air shower universality at the Pierre Auger Observatory

    Energy Technology Data Exchange (ETDEWEB)

    Bridgeman, Ariel; Schulz, Alexander; Roth, Markus [Karlsruhe Institute of Technology (Germany); Collaboration: Pierre-Auger-Collaboration

    2016-07-01

    Recent updates to the air shower universality reconstruction of surface detector data at the Pierre Auger Observatory have reduced the bias and improved the resolution of mass-sensitive variables: the depth of shower maximum and the relative number of muons. For better-informed studies of a possible anisotropy in the arrival direction of ultra-high-energy cosmic rays, a quantification of the power of these parameters to separate a proton-like signal from background is presented. The analysis is furthered with an outlook to the detector's overall sensitivity to a proton-like signal as well as a projection of our ability to distinguish between different astrophysical flux scenarios.

  6. The physics of pulsed streamer discharge in high pressure air and applications to engine techonologies

    Science.gov (United States)

    Lin, Yung-Hsu

    The goal of this dissertation is to study high pressure streamers in air and apply it to diesel engine technologies. Nanosecond scale pulsed high voltage discharges in air/fuel mixtures can generate radicals which in turn have been shown to improve combustion efficiency in gasoline fueled internal combustion engines. We are exploring the possibility to extend such transient plasma generation and expected radical species generation to the range of pressures encountered in compression-ignition (diesel) engines having compression ratios of ˜20:1, thereby improving lean burning efficiency and extending the range of lean combustion. At the beginning of this dissertation, research into streamer discharges is reviewed. Then, we conducted experiments of streamer propagation at high pressures, calculated the streamer velocity based on both optical and electrical measurements, and the similarity law was checked by analyzing the streamer velocity as a function of the reduced electric field, E/P. Our results showed that the similarity law is invalid, and an empirical scaling factor, E/√P, is obtained and verified by dimensional analysis. The equation derived from the dimensional analysis will be beneficial to proper electrode and pulse generator design for transient plasma assisted internal engine experiments. Along with the high pressure study, we applied such technique on diesel engine to improve the fuel efficiency and exhaust treatment. We observed a small effect of transient plasma on peak pressure, which implied that transient plasma has the capability to improve the fuel consumption. In addition, the NO can be reduced effectively by the same technique and the energy cost is 30 eV per NO molecule.

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

    OpenAIRE

    Girbal Blacha, Noemí

    2014-01-01

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

  8. The Dense Plasma Focus Group of IFAS at Argentina: A brief history and recent direction of the investigations

    International Nuclear Information System (INIS)

    Milanese, Maria Magdalena

    2006-01-01

    This is a short review of the research done by the Dense Plasma Focus Group (GPDM) presently working in Tandil, Argentina, from its origin, more than three decades ago, as part of the Plasma Physics Laboratory of Buenos Aires University (the first one in Latin-America where experiments in plasma focus have been made) up to the present. The interest has been mainly experimental studies on plasma focus and, in general, fast electrical discharges. The plasma focus has extensively been studied as neutron producer, including its possibility to play a role in nuclear fusion. It was also researched not only for basic plasma studies, but also for other important applications. Conception, design, construction and study of devices and diagnostics suitable for each application have been made on basis of developed criteria

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

    Directory of Open Access Journals (Sweden)

    Mario Rapoport

    2009-06-01

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

  10. Air, Ocean and Climate Monitoring Enhancing Undergraduate Training in the Physical, Environmental and Computer Sciences

    Science.gov (United States)

    Hope, W. W.; Johnson, L. P.; Obl, W.; Stewart, A.; Harris, W. C.; Craig, R. D.

    2000-01-01

    Faculty in the Department of Physical, Environmental and Computer Sciences strongly believe in the concept that undergraduate research and research-related activities must be integrated into the fabric of our undergraduate Science and Technology curricula. High level skills, such as problem solving, reasoning, collaboration and the ability to engage in research, are learned for advanced study in graduate school or for competing for well paying positions in the scientific community. One goal of our academic programs is to have a pipeline of research activities from high school to four year college, to graduate school, based on the GISS Institute on Climate and Planets model.

  11. NREL technical assistance to Argentina

    Energy Technology Data Exchange (ETDEWEB)

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

    1997-12-01

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

  12. Rational use of energy and cogeneration in Argentina; Uso racional de la energia y la cogeneracion en Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Sosa, M.I. [Universidad Nacional de La Plata (GECCU/UNLP), Buenos Aires (Argentina). Fac. de Ingenieria. Sistemas de Generacion de Energia, Cogeneracion, Ciclos Combinados, Uso Racional de la Energia], E-mail: misosa@ing.unlp.edu.ar

    2009-07-01

    In this paper we discuss the energy situation in Argentina and indicates possibilities for the implementation of cogeneration projects in the industrial sector, which would include energy generated by a centralized system, without additional consumption of primary resources. We discuss the physical potential of cogeneration and regulatory barriers that do not assist in its implementation. Mentioned government measures on rational and efficient use of energy.

  13. La creación clínica de normas sexuales. Nosología, patologización y contramodelos sexuales en la Penitenciaría Nacional de Buenos Aires (Argentina, 1901-1904

    Directory of Open Access Journals (Sweden)

    José Ignacio Allevi

    Full Text Available Resumen El siguiente artículo se ocupa del problema de la construcción de nosologías médico-psiquiátricas referidas a la sexualidad, tomando para ello los casos de inversión sexual (travestismo analizados por Francisco de Veyga en el Servicio de Observaciones de Presuntos Alienados de la Penitenciaría Nacional, en Argentina, a principios del siglo XX. El interés reside en la operatoria por la cual el alienista construye categorías nosográficas ex nihilo, para dar cuenta de las formas de vida y subjetivación que ciertos sujetos desarrollaban y que amenazaban el canon de la normalidad. A su vez, en la voz de De Veyga se traslucen algunos aspectos sobre la moralidad en la vida porteña, que contrastaba con la escena de peligro que éste buscaba plantear. Con ello, interesa analizar un caso específico, donde el alienismo local comienza a intervenir y teorizar, sobre cuerpos y subjetividades disidentes, a partir de la construcción de un discurso grotesco, para calificar formas de vida en los márgenes de la normalidad que buscaba establecerse, propio de los efectos de poder normalizadores que Foucault reconociera en las pericias médico legales.

  14. La implementación local de la atención primaria en la Argentina: estudio de caso en el municipio de Lanús, provincia de Buenos Aires

    Directory of Open Access Journals (Sweden)

    Sara Ardila Gómez

    Full Text Available Se presentan resultados en Argentina de la segunda etapa de un estudio multicéntrico sobre Atención Primaria en Salud, realizado por la Universidad Nacional de Lanús y por la Red de Investigación en Sistemas y Servicios de Salud del Cono Sur, financiado por el International Development Research Center (Canadá. Se indagó sobre la traducción en servicios, prácticas y procesos de los abordajes y modelos de la Atención Primaria en Salud. Eso es un estudio de caso que aplicó el cuestionario de Evaluación Rápida de Atención Primaria en Salud (Barbara Starfield; adaptación y validación por Almeida/Macinko a usuarios y profesionales de centros de salud del Municipio de Lanús. Se entrevistó a gestores y fueron realizados talleres participativos. Los resultados señalan que el índice global de desempeño de la Atención Primaria en Salud en el municipio fue satisfactorio, con puntuaciones altas en las dimensiones 'vínculo con profesionales' y 'formación profesional', y bajas en 'acceso' y 'orientación a la comunidad'.

  15. From the ideal citizen to the situated citizen: A study about models of citizenship and young citizens’ subjective positioning in current Argentina (Buenos Aires y Conurbano, 2011-13

    Directory of Open Access Journals (Sweden)

    Miriam Kriger

    2015-04-01

    Full Text Available DOI: http://dx.doi.org/10.17227/01234870.41folios87.102 This paper is part of the field of studies concerning youth and politics, understood as a key part of the bond between young people with the “common project” to which they are formally added as new citizens. It questions the relationship between how young people think “the citizenship” in an ideal plane and how their attitudes as citizens in situation, from a psychosocial perspective and with a focus on contemporary Argentine context. It has a special interest in the tensions and links between morality and politics, and individual agency and social dimensions. In this line, this article discuss results of a study conducted in Argentina between 2011-3 among young students (N = 275. It inquires, first, the models of citizenship and, secondly, its proposals for addressing the perceived call “insecurity” as a central and current problem that confronts the social conflict. As a result, three ideals of citizenship (individual, social, and political and three types of subjective positioning (punitive, disciplinary, and political are set, inferring from their proposals for resolving “insecurity”. Then, it examines the correlation found in most of the participants between the individual ideal of citizenship, with strong moral impression, and the punitive positioning among the conflict. Finally, it notes the need to work towards incorporating social and political dimension to the thinking of the young people.

  16. Estudio cualicuantitativo de las variables sociales que definen escenarios de transmisión de la fiebre hemorrágica argentina en las provincias de Buenos Aires y Santa Fe, 2001-2010

    Directory of Open Access Journals (Sweden)

    Andrea Mastrangelo

    2014-01-01

    Full Text Available El objetivo de este artículo es caracterizar los escenarios de transmisión de fiebre hemorrágica argentina (FHA en el período de vacunación (2001-2010. El estudio constó de tres etapas. En la primera, se realizó un análisis cuantitativo de la base de datos del Instituto Nacional de Enfermedades Virales Humanas “Dr. Julio I. Maiztegui” (INEVH de casos de FHA confirmados en el período (221 casos que, sobre la base del lugar de transmisión y la zona endémica conocida, se agruparon según tres hipótesis de escenario: clásico, emergente-reemergente, y viajero. En la segunda etapa, para poner a prueba las hipótesis, se realizaron entrevistas en campo, entre agosto y octubre de 2011, a una muestra de selección intencional de pacientes distribuida proporcionalmente entre las tres hipótesis. Finalmente, en una tercera etapa, los datos generados para cada hipó - tesis de escenario se agruparon en tres escalas espacio-temporales: microescala (sujeto, mesoescala (localidad y macroescala (región. Los resultados muestran que los nuevos lugares de transmisión estarían asociados a las dinámicas socioproductivas del cereal y las rutas al puerto.

  17. Physical Quality of Air and Sick Building Syndrome in Office Employees of “X” Company in Jakarta

    Directory of Open Access Journals (Sweden)

    Rama Putra Effendi

    2014-08-01

    Full Text Available Physical symptoms had led to the suggestion that a disease called Sick Building Syndrome (SBS occured to the office of “X” Company in the city of Jakarta. This research that used a random sampling technique examined the physical air quality of the “X” Company, such as indoor temperature and humidity aspects, the SBS cases of 90 workers. Research results on the Company “X” office workers showed that, (1 47.8% workers had cases of SBS; and, (2 a value of 0.714 was acquired from the result of bivariate analysis using Chi square statistics program with p value of 0.325 and RP of 95 percent. This signifies that there were no relations between indoor temperature and humidity with the SBS cases of the Company “X” workers in Jakarta City. Possibilities of other factors were found to trigger the SBS symptoms such as chemical and microbiological factors (from work tools and facilities, and psychosocial factor (from the workers themselves

  18. Government Style as a Factor in Information Flow: Television Programming in Argentina, l979-l988.

    Science.gov (United States)

    John, Jeffrey Alan

    Noting that Argentina's recent history is particularly useful for analysis of the varying effects that differing government styles can have on a single mass communication system, a study compared Argentine (specifically Buenos Aires) television's 1979 programming schedule, prepared during a military dictatorship, with recent schedules prepared…

  19. Azpiazu, Daniel, La concentración en la industria argentina a principios del siglo XXI

    Directory of Open Access Journals (Sweden)

    Patricia Jerez

    2013-01-01

    Full Text Available Azpiazu, Daniel, La concentración en la industria argentina a principios del siglo XXI, Buenos Aires, Cara o Ceca/Centro Cultural de la Cooperación Floreal Gorini/Editorial Atuel, 2011 (148 págs.

  20. FINANCIAL GOVERNMENTALITY IMPLICATIONS OF FINANCIAL DECISIONS OF TOBACCO COOPERATIVE IN ARGENTINA

    Directory of Open Access Journals (Sweden)

    Agüero, Juan Omar

    2013-01-01

    Full Text Available This paper presents a summary of the arguments supporting the thesis on the influence of financial governmentality in financial decisions in tobacco cooperatives in Argentina. This thesis was defended by the author at the University of Buenos Aires and is supported by a cooperative study of Jujuy, Salta and Misiones in the period 1969-2009.

  1. PHYSICS

    CERN Multimedia

    P. Sphicas

    There have been three physics meetings since the last CMS week: “physics days” on March 27-29, the Physics/ Trigger week on April 23-27 and the most recent physics days on May 22-24. The main purpose of the March physics days was to finalize the list of “2007 analyses”, i.e. the few topics that the physics groups will concentrate on for the rest of this calendar year. The idea is to carry out a full physics exercise, with CMSSW, for select physics channels which test key features of the physics objects, or represent potential “day 1” physics topics that need to be addressed in advance. The list of these analyses was indeed completed and presented in the plenary meetings. As always, a significant amount of time was also spent in reviewing the status of the physics objects (reconstruction) as well as their usage in the High-Level Trigger (HLT). The major event of the past three months was the first “Physics/Trigger week” in Apri...

  2. A study of the combined effects of physical activity and air pollution on mortality in elderly urban residents: the Danish Diet, Cancer, and Health Cohort.

    Science.gov (United States)

    Andersen, Zorana Jovanovic; de Nazelle, Audrey; Mendez, Michelle Ann; Garcia-Aymerich, Judith; Hertel, Ole; Tjønneland, Anne; Overvad, Kim; Raaschou-Nielsen, Ole; Nieuwenhuijsen, Mark J

    2015-06-01

    Physical activity reduces, whereas exposure to air pollution increases, the risk of premature mortality. Physical activity amplifies respiratory uptake and deposition of air pollutants in the lung, which may augment acute harmful effects of air pollution during exercise. We aimed to examine whether benefits of physical activity on mortality are moderated by long-term exposure to high air pollution levels in an urban setting. A total of 52,061 subjects (50-65 years of age) from the Danish Diet, Cancer, and Health cohort, living in Aarhus and Copenhagen, reported data on physical activity in 1993-1997 and were followed until 2010. High exposure to air pollution was defined as the upper 25th percentile of modeled nitrogen dioxide (NO2) levels at residential addresses. We associated participation in sports, cycling, gardening, and walking with total and cause-specific mortality by Cox regression, and introduced NO2 as an interaction term. In total, 5,534 subjects died: 2,864 from cancer, 1,285 from cardiovascular disease, 354 from respiratory disease, and 122 from diabetes. Significant inverse associations of participation in sports, cycling, and gardening with total, cardiovascular, and diabetes mortality were not modified by NO2. Reductions in respiratory mortality associated with cycling and gardening were more pronounced among participants with moderate/low NO2 [hazard ratio (HR) = 0.55; 95% CI: 0.42, 0.72 and 0.55; 95% CI: 0.41, 0.73, respectively] than with high NO2 exposure (HR = 0.77; 95% CI: 0.54, 1.11 and HR = 0.81; 95% CI: 0.55, 1.18, p-interaction = 0.09 and 0.02, respectively). In general, exposure to high levels of traffic-related air pollution did not modify associations, indicating beneficial effects of physical activity on mortality. These novel findings require replication in other study populations.

  3. Radioactive waste with 14C in Argentina

    International Nuclear Information System (INIS)

    Di Lello, D.S.

    2009-01-01

    14 C is a long half-life radioisotope, which is present in radioactive waste generated during the operation and decommissioning of nuclear power plants. 14 C can also be found in waste generated by medical diagnostic laboratories or any one generated by fields that deal with research and development (mainly connected with the biochemists area). According to international precedents the disposal of 14 C based on the final amount found in radioactive waste and its chemical form have conditioned the design and operation of the facilities (either because of the amount of it or the chemical form in which 14 C was present). We have to take into account that the design of facilities for radioactive waste disposal is included among the obligations of the National Radioactive Waste Management Program (PNGRR). It is absolutely necessary to count with enough information about the characteristics of any waste containing 14 C that is generated in Argentina, in order to be able to fulfil the requirements previously mentioned. The main characteristics of interest in the frame of the present project are: a) the principal reactions that take place for the formation of 14 C; b) The specific concentration of activity in materials where this radio nuclei is formed or is accumulated; c) To know which is the current step in the process of managing these wastes (in Argentina and all over the world). Either if it refers to bulk or conditioned storage, inside the generating facility; d) Transportation possibilities of 14 C under these conditions; e) The accumulated volume and the generation rate of this kind of waste in Argentina. This paper presents an initial collection and evaluation of the information related to the characteristics already mentioned, having gathered published material from the literature and information in the PNGRR up to this moment. The description of the characteristics of the radioactive waste containing 14 C from nuclear power plants, hospitals and research and

  4. Argentina's regulatory body: its communication activities

    International Nuclear Information System (INIS)

    Cesario, Pablo A.; Terigi, Gabriel E.

    2008-01-01

    Full text: The Nuclear Regulatory Authority of Argentina (ARN) is empowered to regulate and control the nuclear activity with regard to radiation and nuclear safety, physical protection and nuclear non-proliferation issues. It must also advise the Executive on issues under its purview. The objective of the Nuclear Regulatory Authority is to establish, develop and enforce a regulatory system applicable to all nuclear activities carried out in Argentina. Two of the goals of this regulatory system are to provide an appropriate standard of protection for individuals against the harmful effects of ionizing radiation, and to maintain a reasonable degree of radiological and nuclear safety in the nuclear activities performed in Argentina. The responsibility of the radiation protection community in performing the tasks to accomplish this goals is twofold. On one hand, it must ensure a high technical quality in performing these functions. It must also provide information on its activities which has to be accurate, comprehensive and understandable. The way a society understands the concept of 'risk' needs to be kept in mind. Risk perception is the subjective judgment that people make about the characteristics and severity of a risk. Cultural theory refers to theories of risk perception that focus on culture, rather than individual psychology as an explanation for differences in risk judgments. It is widely agreed that trust is a key factor in influencing people's perceptions of risk. It is understood there are two main ways trust may impact in risk perceptions: an activity is perceived as more risky if the people or agencies managing it are perceived as untrustworthy; and information presented by trusted sources is given more credibility than information from untrusted sources. One of the primary purposes of ARN's Communication Program is to provide a means whereby those engaged in radiation protection activities may communicate more readily with each other and the public and

  5. PHYSICS

    CERN Multimedia

    D. Acosta

    2010-01-01

    A remarkable amount of progress has been made in Physics since the last CMS Week in June given the exponential growth in the delivered LHC luminosity. The first major milestone was the delivery of a variety of results to the ICHEP international conference held in Paris this July. For this conference, CMS prepared 15 Physics Analysis Summaries on physics objects and 22 Summaries on new and interesting physics measurements that exploited the luminosity recorded by the CMS detector. The challenge was incorporating the largest batch of luminosity that was delivered only days before the conference (300 nb-1 total). The physics covered from this initial running period spanned hadron production measurements, jet production and properties, electroweak vector boson production, and even glimpses of the top quark. Since then, the accumulated integrated luminosity has increased by a factor of more than 100, and all groups have been working tremendously hard on analysing this dataset. The September Physics Week was held ...

  6. Nuclear Energy Stakeholders in Argentina

    International Nuclear Information System (INIS)

    Gadano, Julian

    2017-01-01

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

  7. PHYSICS

    CERN Multimedia

    J. Incandela

    There have been numerous developments in the physics area since the September CMS week. The biggest single event was the Physics/Trigger week in the end of Octo¬ber, whereas in terms of ongoing activities the “2007 analyses” went into high gear. This was in parallel with participation in CSA07 by the physics groups. On the or¬ganizational side, the new conveners of the physics groups have been selected, and a new database for man¬aging physics analyses has been deployed. Physics/Trigger week The second Physics-Trigger week of 2007 took place during the week of October 22-26. The first half of the week was dedicated to working group meetings. The ple¬nary Joint Physics-Trigger meeting took place on Wednesday afternoon and focused on the activities of the new Trigger Studies Group (TSG) and trigger monitoring. Both the Physics and Trigger organizations are now focused on readiness for early data-taking. Thus, early trigger tables and preparations for calibr...

  8. PHYSICS

    CERN Multimedia

    P. Sphicas

    The CPT project came to an end in December 2006 and its original scope is now shared among three new areas, namely Computing, Offline and Physics. In the physics area the basic change with respect to the previous system (where the PRS groups were charged with detector and physics object reconstruction and physics analysis) was the split of the detector PRS groups (the old ECAL-egamma, HCAL-jetMET, Tracker-btau and Muons) into two groups each: a Detector Performance Group (DPG) and a Physics Object Group. The DPGs are now led by the Commissioning and Run Coordinator deputy (Darin Acosta) and will appear in the correspond¬ing column in CMS bulletins. On the physics side, the physics object groups are charged with the reconstruction of physics objects, the tuning of the simulation (in collaboration with the DPGs) to reproduce the data, the provision of code for the High-Level Trigger, the optimization of the algorithms involved for the different physics analyses (in collaboration with the analysis gr...

  9. Public information activities in Argentina

    International Nuclear Information System (INIS)

    Espejo, Hector

    1998-01-01

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

  10. The origins and professionalization of cognitive psychotherapy in Argentina.

    Science.gov (United States)

    Korman, Guido Pablo; Viotti, Nicolás; Garay, Cristian Javier

    2015-05-01

    The growing popularity of cognitive-behavioral therapy (CBT) has helped reshape the mental health scene in the city of Buenos Aires, historically the stronghold of psychoanalysis. In the early 1980s, CBT was infrequently used and sometimes overtly resisted in the field of mental health. Almost 3 decades later, the impact of CBT has increased dramatically in Argentina, not only in independent practice but also in the health system and in everyday life. This article aims to describe the process by which Argentine psychotherapists first adopted this new theoretical framework. (c) 2015 APA, all rights reserved).

  11. Historia de la orientación profesional en Argentina

    OpenAIRE

    Klappenbach, Hugo

    2005-01-01

    A partir de los años cuarenta, se desarrolló en Argentina la Orientación Profesional , según las orientaciones que en aquellos momentos provenían de España, Francia, Bélgica y Suiza. El trabajo, analiza las primeras experiencias en orientación profesional, desarrolladas tanto en las grandes urbes industriales como Buenos Aires y Rosario, y en pequeños centros urbanos como Tucumán o San Luis. Asimismo, se analiza el contexto institucional y político de tales experiencias, y el decidido respald...

  12. The drinking water supply in the periphery of AMBA, Argentina

    International Nuclear Information System (INIS)

    Caceres, Veronica

    2013-01-01

    The paper analyzes the problem of drinking water supply in areas with little home network coverage in the main urban area of Argentina called Metropolitan Area of Buenos Aires. It is recover contributions of exploratory research which appealed to the case and analysis of primary and secondary sources. It focuses on the characterization of the emerging commercial circuits that emerge in the absence of networks, included by the presence of formal and informal firms that perform drilling and install equipment that allows individual exploitation of the aquifers by households that have no access to water networks. It also examines the meager state control regulation and supervision.

  13. Quality control in radioimmunoassay for Argentina, Chile, Paraguay and Uruguay

    International Nuclear Information System (INIS)

    Quiroga, S.

    1984-10-01

    The purpose of this project was the development of an External Quality Control Programme on Radioimmunoassay among laboratories from Argentina and other Latinoamerican countries. The purpose of this programme was to improve the performance of the participating laboratories in order to increase the diagnostic value of patient results. The number of returns of this programme (Buenos Aires I) were compared against those of the previous one (Programme I) (Contract 2737/RB) to determine if the objectives were fulfilled. The preparation of the samples and the evaluation of the results of the first six samples were analyzed in the progress report sent on December 30th, 1983 and were reanalysed including late results

  14. Radiochemistry in chemistry and chemistry related undergraduate programmes in Argentina

    International Nuclear Information System (INIS)

    Fornaciari Iljadica, M.C.; Furnari, J.C.; Cohen, I.M.

    2006-01-01

    The evolution of education in Argentina at the university level is described. The detailed search of the educational offer shows that less than half of the universities (35 out of 92) include chemistry and chemistry related undergraduate programmes in their curriculum. The revision of the position of radiochemistry in these programmes reveals that only seven courses on radiochemistry are currently offered. Radiochemistry is included only in few programmes in chemistry and biochemistry. With respect to the programmes in chemical engineering the situation is worse. This offer is strongly concentrated in Buenos Aires and its surroundings. (author)

  15. The energy sector in Argentina

    International Nuclear Information System (INIS)

    2016-01-01

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

  16. AIRS/Aqua L3 Daily Standard Physical Retrieval (AIRS+AMSU) 1 degree x 1 degree V006 (AIRX3STD) at GES DISC

    Data.gov (United States)

    National Aeronautics and Space Administration — The Atmospheric Infrared Sounder (AIRS) is a grating spectrometer (R = 1200) aboard the second Earth Observing System (EOS) polar-orbiting platform, EOS Aqua. In...

  17. AIRS/Aqua L3 Monthly Quantization in Physical Units (AIRS+AMSU) 5 degrees x 5 degrees V006 (AIRX3QPM) at GES DISC

    Data.gov (United States)

    National Aeronautics and Space Administration — The Atmospheric Infrared Sounder (AIRS) is a grating spectrometer (R = 1200) aboard the second Earth Observing System (EOS) polar-orbiting platform, EOS Aqua. In...

  18. Gender, airborne chemical monitoring, and physical work environment are related to indoor air symptoms among nonindustrial workers in the Klang Valley, Malaysia.

    Science.gov (United States)

    Syazwan, Aizat Ismail; Hafizan, Juahir; Baharudin, Mohd Rafee; Azman, Ahmad Zaid Fattah; Izwyn, Zulkapri; Zulfadhli, Ismail; Syahidatussyakirah, Katis

    2013-01-01

    The purpose of this study was to analyze the relationship of airborne chemicals and the physical work environment risk element on the indoor air symptoms of nonindustrial workers. A cross-sectional study consisting of 200 office workers. A random selection of 200 buildings was analyzed for exposure and indoor air symptoms based on a pilot study in the Klang Valley, Malaysia. A set of modified published questionnaires by the Department of Occupational Safety and Health (DOSH), Malaysia and a previous study (MM040NA questionnaire) pertaining to indoor air symptoms was used in the evaluation process of the indoor air symptoms. Statistical analyses involving logistic regression and linear regression were used to determine the relationship between exposure and indoor air symptoms for use in the development of an indoor risk matrix. The results indicate that some indoor air pollutants (carbon monoxide, formaldehyde, total volatile organic compound, and dust) are related to indoor air symptoms of men and women. Temperature and relative humidity showed a positive association with complaints related to the perceived indoor environmental condition (drafts and inconsistency of temperature). Men predominantly reported general symptoms when stratification of gender involved exposure to formaldehyde. Women reported high levels of complaints related to mucosal and general symptoms from exposure to the dust level indoors. Exposure to pollutants (total volatile organic compounds, carbon monoxide, and formaldehyde) and physical stressors (air temperature and relative humidity) influence reported symptoms of office workers. These parameters should be focused upon and graded as one of the important elements in the grading procedure when qualitatively evaluating the indoor environment.

  19. PHYSICS

    CERN Multimedia

    Submitted by

    Physics Week: plenary meeting on physics groups plans for startup (14–15 May 2008) The Physics Objects (POG) and Physics Analysis (PAG) Groups presented their latest developments at the plenary meeting during the Physics Week. In the presentations particular attention was given to startup plans and readiness for data-taking. Many results based on the recent cosmic run were shown. A special Workshop on SUSY, described in a separate section, took place the day before the plenary. At the meeting, we had also two special DPG presentations on “Tracker and Muon alignment with CRAFT” (Ernesto Migliore) and “Calorimeter studies with CRAFT” (Chiara Rovelli). We had also a report from Offline (Andrea Rizzi) and Computing (Markus Klute) on the San Diego Workshop, described elsewhere in this bulletin. Tracking group (Boris Mangano). The level of sophistication of the tracking software increased significantly over the last few months: V0 (K0 and Λ) reconstr...

  20. Anotrichium furcellatum (Ceramiaceae, Rhodophyta en Argentina: Una posible especie invasora Anotrichium furcellatum (Ceramiaceae, Rhodophyta in Argentina: A possible invasive species

    Directory of Open Access Journals (Sweden)

    Alicia L. Boraso de Zaixso

    2005-12-01

    Full Text Available Se reporta la presencia de al menos dos poblaciones de Anotrichium en la costa argentina (provincias de Buenos Aires, Chubut y Santa Cruz. Las poblaciones submareales observadas estaban caracterizadas por una mayoría de talos en estado vegetativo. Solo las poblaciones intermareales mostraron tetrasporofitos con esporangios. Las poblaciones se identificaron provisionalmente de acuerdo a la morfología del talo y de los tetrasporangios como Anotrichium furcellatum (J. Agardh Baldock. Las características de los talos de las poblaciones estudiadas son comparadas con las de las especies de Anotrichium que poseen igualmente pocos tetrasporangios por célula. Se reportan arribazones inusualmente abundantes de esta especie ocurridas en la costa bonaerense en el año 2000.At least two populations of Anotrichium are reported from the coast of Argentina (Buenos Aires, Chubut, and Santa Cruz provinces. These populations have a majority of vegetative thalli. According with their morphological and tetrasporangial characteristics the populations are provisionally assigned to Anotrichium furcellatum (J. Agardh Baldock. The characteristics of the thalli of studied populations are compared with the species of Anotrichium having also a low number of tetrasporangia per cell. Extraordinary high quantities of cast ashore thalli of this species is reported along the Buenos Aires province coast in the year 2000.

  1. Characterizing physical properties and heterogeneous chemistry of single particles in air using optical trapping-Raman spectroscopy

    Science.gov (United States)

    Gong, Z.; Wang, C.; Pan, Y. L.; Videen, G.

    2017-12-01

    Heterogeneous reactions of solid particles in a gaseous environment are of increasing interest; however, most of the heterogeneous chemistry studies of airborne solids were conducted on particle ensembles. A close examination on the heterogeneous chemistry between single particles and gaseous-environment species is the key to elucidate the fundamental mechanisms of hydroscopic growth, cloud nuclei condensation, secondary aerosol formation, etc., and reduce the uncertainty of models in radiative forcing, climate change, and atmospheric chemistry. We demonstrate an optical trapping-Raman spectroscopy (OT-RS) system to study the heterogeneous chemistry of the solid particles in air at single-particle level. Compared to other single-particle techniques, optical trapping offers a non-invasive, flexible, and stable method to isolate single solid particle from substrates. Benefited from two counter-propagating hollow beams, the optical trapping configuration is adaptive to trap a variety of particles with different materials from inorganic substitution (carbon nanotubes, silica, etc.) to organic, dye-doped polymers and bioaerosols (spores, pollen, etc.), with different optical properties from transparent to strongly absorbing, with different sizes from sub-micrometers to tens of microns, or with distinct morphologies from loosely packed nanotubes to microspheres and irregular pollen grains. The particles in the optical trap may stay unchanged, surface degraded, or optically fragmented according to different laser intensity, and their physical and chemical properties are characterized by the Raman spectra and imaging system simultaneously. The Raman spectra is able to distinguish the chemical compositions of different particles, while the synchronized imaging system can resolve their physical properties (sizes, shapes, morphologies, etc.). The temporal behavior of the trapped particles also can be monitored by the OT-RS system at an indefinite time with a resolution from

  2. First record of Talaromyces udagawae in soil related to decomposing human remains in Argentina.

    Science.gov (United States)

    Tranchida, María C; Centeno, Néstor D; Stenglein, Sebastián A; Cabello, Marta N

    2016-01-01

    The morphologic features of Talaromyces udagawae Stolk and Samson are here described and illustrated. This teleomorphic Ascomycota fungus was isolated from soil obtained in Buenos Aires province (Argentina) from beneath a human cadaver in an advanced state of decomposition. After washing and serial dilution of the soil along with moist-chamber techniques for fungal cultivation, T. udagawae formed very restricted colonies of bright yellow color on different growth media with 8-ascospored asci. The ascospores were ellipsoidal and ornamented. The anamorphic state was not observed. Molecular-genetic techniques identified the species. The present record is the first of the species in Argentina, pointing it as a tool to identify soils where cadaver decomposition occurs. Copyright © 2015 Asociación Argentina de Microbiología. Publicado por Elsevier España, S.L.U. All rights reserved.

  3. Reviews Book: Sustainable Energy—Without the Hot Air Equipment: Doppler Effect Unit Book: The Physics of Rugby Book: Plastic Fantastic: How the Biggest Fraud in Physics Shook the Scientific World Equipment: Brunel Eyecam Equipment: 200x Digital Microscope Book: The Atom and the Apple: Twelve Tales from Contemporary Physics Book: Physics 2 for OCR Web Watch

    Science.gov (United States)

    2009-09-01

    WE RECOMMEND Sustainable Energy—Without the Hot Air This excellent book makes sense of energy facts and figures Doppler Effect Unit Another simple, effective piece of kit from SEP Plastic Fantastic: How the Biggest Fraud in Physics Shook the Scientific World Intriguing and unique write-up of an intellectual fraud case Brunel Eyecam An affordable digital eyepiece for your microscope 200x Digital Microscope An adjustable digital flexcam for classroom use The Atom and the Apple: Twelve Tales from Contemporary Physics A fascinating round-up of the recent history of physics WORTH A LOOK The Physics of Rugby Book uses sport analogy and context to teach physics concepts Physics 2 for OCR Essential textbook for the course but otherwise pointless WEB WATCH Some free teaching materials are better than those you'd pay for

  4. PHYSICS

    CERN Multimedia

    D. Futyan

    A lot has transpired on the “Physics” front since the last CMS Bulletin. The summer was filled with preparations of new Monte Carlo samples based on CMSSW_3, the finalization of all the 10 TeV physics analyses [in total 50 analyses were approved] and the preparations for the Physics Week in Bologna. A couple weeks later, the “October Exercise” commenced and ran through an intense two-week period. The Physics Days in October were packed with a number of topics that are relevant to data taking, in a number of “mini-workshops”: the luminosity measurement, the determination of the beam spot and the measurement of the missing transverse energy (MET) were the three main topics.  Physics Week in Bologna The second physics week in 2009 took place in Bologna, Italy, on the week of Sep 7-11. The aim of the week was to review and establish how ready we are to do physics with the early collisions at the LHC. The agenda of the week was thus pac...

  5. PHYSICS

    CERN Multimedia

    D. Futyan

    A lot has transpired on the “Physics” front since the last CMS Bulletin. The summer was filled with preparations of new Monte Carlo samples based on CMSSW_3, the finalization of all the 10 TeV physics analyses [in total 50 analyses were approved] and the preparations for the Physics Week in Bologna. A couple weeks later, the “October Exercise” commenced and ran through an intense two-week period. The Physics Days in October were packed with a number of topics that are relevant to data taking, in a number of “mini-workshops”: the luminosity measurement, the determination of the beam spot and the measurement of the missing transverse energy (MET) were the three main topics.   Physics Week in Bologna The second physics week in 2009 took place in Bologna, Italy, on the week of Sep 7-11. The aim of the week was to review and establish (we hoped) the readiness of CMS to do physics with the early collisions at the LHC. The agenda of the...

  6. Boll weevil invasion process in Argentina

    Science.gov (United States)

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

  7. Communications received from Argentina and Brazil

    International Nuclear Information System (INIS)

    1989-01-01

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

  8. Mida õpetab Argentina finantskriis? / Karsten Staehr

    Index Scriptorium Estoniae

    Staehr, Karsten, 1962-

    2002-01-01

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

  9. Increasing Capacity for Environmental Engineering in Salta, Argentina

    Science.gov (United States)

    Rajal, Verónica B.; Cid, Alicia G.; Cruz, Mercedes C.; Poma, Hugo R.; Cacciabue, Dolores Gutierrez; Romano, Neli; Moraga, Norma B.; Last, Jerold A.

    2012-01-01

    Background The Fogarty International Center (FIC) of the United States National Institutes of Health includes the International Training and Research in Environmental and Occupational Health (ITREOH) Program. The “International Training Program in Environmental Toxicology and Public Health” Center, funded in 2002 is based at the University of California, Davis, and is part of the ITREOH group of Centers. It has major efforts focused at the public universities in Montevideo, Uruguay, and Salta, Argentina. Results Training and research efforts in Salta begun in 2005 in the College of Engineering. A donated used real-time PCR machine was the starting point and the initial FIC support was instrumental to face other problems including physical space, research projects and grants, trainees, training, networking, and distractions/opportunities in order to develop local capacities in Environmental Engineering using modern methodology. After six years of successful work, the Salta center has become a reference Center in the field, and is still growing and consolidating. Conclusions This program has had a significant impact locally and regionally. The model used in Argentina could be easily adapted to other fields or types of projects in Argentina and in other developing countries. PMID:22467330

  10. Increasing capacity for environmental engineering in Salta, Argentina.

    Science.gov (United States)

    Rajal, Verónica B; Cid, Alicia G; Cruz, Mercedes C; Poma, Hugo R; Cacciabue, Dolores Gutierrez; Romano, Neli; Moraga, Norma B; Last, Jerold A

    2013-01-01

    The Fogarty International Center (FIC) of the United States National Institutes of Health includes the International Training and Research in Environmental and Occupational Health (ITREOH) Program. The "International Training Program in Environmental Toxicology and Public Health" Center, funded in 2002 is based at the University of California, Davis, and is part of the ITREOH group of Centers. It has major efforts focused at the public universities in Montevideo, Uruguay, and Salta, Argentina. Training and research efforts in Salta begun in 2005 in the College of Engineering. A donated used real-time PCR machine was the starting point and the initial FIC support was instrumental to face other problems including physical space, research projects and grants, trainees, training, networking, and distractions/opportunities in order to develop local capacities in Environmental Engineering using modern methodology. After 6 years of successful work, the Salta center has become a reference Center in the field, and is still growing and consolidating. This program has had a significant impact locally and regionally. The model used in Argentina could be easily adapted to other fields or types of projects in Argentina and in other developing countries. Copyright © 2012 Wiley Periodicals, Inc.

  11. Psychotherapy, psychoanalysis and urban poverty in Argentina.

    Science.gov (United States)

    Epele, Maria Esther

    2016-12-01

    Based on ethnographic research carried out in the Buenos Aires Metropolitan Area, this paper examines the views of social actors on the psychoanalytically-oriented psychotherapy focused on marginalized populations. From Foucault's perspective on the forms of truth-telling, the aim of this paper is to analyze, as a preliminary research report, treatments according to the native ways of speaking and listening, which dominate the description of therapeutic experiences of patients who come to the treatment without any professional intermediation. The neoliberal transformations of the past decades in Argentina changed both the landscape of the public health system and the daily lives of marginalized people. Considering such changes, this paper examines the ways in which verbal actions (speaking and listening) take place in psychotherapy and mark the course not only of treatments but also the temporal rhythms of their development, and their various levels of efficacy. Finally, the discussion focuses on how ways of speaking and listening in treatments are modeled not only by institutional dynamics but also by the characteristics these verbal activities take in everyday life under the logics of power that prevail over them.

  12. 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

  13. Natural radionuclides in drinking water in Argentina

    International Nuclear Information System (INIS)

    Bomben, A.M.; Palacios, M.A.

    2000-01-01

    As part of the national survey to evaluate natural radioactivity in the environment, concentration levels of natural uranium and 226 Ra have been analyzed in over 300 drinking water samples taken from different locations in Argentina. 226 Ra was determined by 222 Rn emanation and liquid scintillation counting, and natural uranium by a fluorimetric procedure. Values ranging from 0.03 to 24 μg.l -1 of natural uranium and from 0.06 to 50 μg.l -1 , were measured on drinking water samples taken from tap water systems and private wells, respectively. Concentrations up to 15 mBq.l -1 and to 22 mBq.l -1 of 226 Ra were found in drinking water samples taken from tap water systems and private wells, respectively. These values are compared with the reference values accepted for drinking water. Based on the water intake rate, the age distribution and the measured concentrations, an annual collective effective dose of 1.9 man Sv and an individual committed effective dose of 0.49 μSv.y -1 were calculated for the city of Buenos Aires adult inhabitants, for the ingestion of both natural radionuclides analyzed in drinking water. (author)

  14. 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.

  15. 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

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

    Directory of Open Access Journals (Sweden)

    María I. Catalano

    2008-12-01

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

  17. PHYSICS

    CERN Multimedia

    J. Incandela

    The all-plenary format of the CMS week in Cyprus gave the opportunity to the conveners of the physics groups to present the plans of each physics analysis group for tackling early physics analyses. The presentations were complete, so all are encouraged to browse through them on the Web. There is a wealth of information on what is going on, by whom and on what basis and priority. The CMS week was followed by two CMS “physics events”, the ICHEP08 days and the physics days in July. These were two weeks dedicated to either the approval of all the results that would be presented at ICHEP08, or to the review of all the other Monte-Carlo based analyses that were carried out in the context of our preparations for analysis with the early LHC data (the so-called “2008 analyses”). All this was planned in the context of the beginning of a ramp down of these Monte Carlo efforts, in anticipation of data.  The ICHEP days are described below (agenda and talks at: http://indic...

  18. PHYSICS

    CERN Multimedia

    Joe Incandela

    There have been two plenary physics meetings since the December CMS week. The year started with two workshops, one on the measurements of the Standard Model necessary for “discovery physics” as well as one on the Physics Analysis Toolkit (PAT). Meanwhile the tail of the “2007 analyses” is going through the last steps of approval. It is expected that by the end of January all analyses will have converted to using the data from CSA07 – which include the effects of miscalibration and misalignment. January Physics Days The first Physics Days of 2008 took place on January 22-24. The first two days were devoted to comprehensive re¬ports from the Detector Performance Groups (DPG) and Physics Objects Groups (POG) on their planning and readiness for early data-taking followed by approvals of several recent studies. Highlights of POG presentations are included below while the activities of the DPGs are covered elsewhere in this bulletin. January 24th was devo...

  19. Pobreza urbana, comunidad local y Estado-socio en Argentina: La provisión de servicios públicos en un asentamiento de la Región Metropolitana de Buenos Aires

    OpenAIRE

    Bruno Besana, Patricio; Alberto Gutiérrez, Ricardo; Grinberg, Silvia

    2015-01-01

    Mientras en los sectores más acomodados de la ciudad los servicios públicos -e1ectricidad, agua potable o recolección de residuos- son provistos por agencias dei Estado o empresas privadas, en los bardos más pobres su provisión depende en gran medida de la organización de la comunidad, así como de la iniciativa de los liderazgos locales. Con base en el estudio de un asentamiento de la Región Metropolitana de Buenos Aires, sostenemos que ambos (liderazgo local y organización de la comunidad) s...

  20. Physics

    CERN Document Server

    Cullen, Katherine

    2005-01-01

    Defined as the scientific study of matter and energy, physics explains how all matter behaves. Separated into modern and classical physics, the study attracts both experimental and theoretical physicists. From the discovery of the process of nuclear fission to an explanation of the nature of light, from the theory of special relativity to advancements made in particle physics, this volume profiles 10 pioneers who overcame tremendous odds to make significant breakthroughs in this heavily studied branch of science. Each chapter contains relevant information on the scientist''s childhood, research, discoveries, and lasting contributions to the field and concludes with a chronology and a list of print and Internet references specific to that individual.

  1. Greenstone: uso actual en Argentina

    Directory of Open Access Journals (Sweden)

    Marcela Fushimi

    2018-04-01

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

  2. On the physical processes ruling an atmospheric pressure air glow discharge operating in an intermediate current regime

    International Nuclear Information System (INIS)

    Prevosto, L.; Mancinelli, B.; Chamorro, J. C.; Cejas, E.; Kelly, H.

    2015-01-01

    Low-frequency (100 Hz), intermediate-current (50 to 200 mA) glow discharges were experimentally investigated in atmospheric pressure air between blunt copper electrodes. Voltage–current characteristics and images of the discharge for different inter-electrode distances are reported. A cathode-fall voltage close to 360 V and a current density at the cathode surface of about 11 A/cm 2 , both independent of the discharge current, were found. The visible emissive structure of the discharge resembles to that of a typical low-pressure glow, thus suggesting a glow-like electric field distribution in the discharge. A kinetic model for the discharge ionization processes is also presented with the aim of identifying the main physical processes ruling the discharge behavior. The numerical results indicate the presence of a non-equilibrium plasma with rather high gas temperature (above 4000 K) leading to the production of components such as NO, O, and N which are usually absent in low-current glows. Hence, the ionization by electron-impact is replaced by associative ionization, which is independent of the reduced electric field. This leads to a negative current-voltage characteristic curve, in spite of the glow-like features of the discharge. On the other hand, several estimations show that the discharge seems to be stabilized by heat conduction; being thermally stable due to its reduced size. All the quoted results indicate that although this discharge regime might be considered to be close to an arc, it is still a glow discharge as demonstrated by its overall properties, supported also by the presence of thermal non-equilibrium

  3. El déficit habitacional como un problema de economía social: el caso del Parque Indoamericano de Villa Soldati en Buenos Aires (Argentina (The housing shortage as a problem of social economy: the case of the Parque Indoamericano of Villa Soldati, in...

    Directory of Open Access Journals (Sweden)

    Pablo Sebastián García

    2012-05-01

    Full Text Available Herbert Simon formulated in 1979 a new approach to the theory of firm, which argued that economic rationality was not to be thought in the way that Milton Friedman did, i.e., in terms of utility maximization. This critical approach which Simon inaugurated has led to many critiques of mainstream economics. Besides the fundamental methodological criticism that can be formulated against Friedman’s perspective, the approach proposed by Simon involves a change of viewpoint. In fact, the theory of the firm, and of economic behaviour in general, is in Friedman and the “classical model” subordinated to market and price theory as the main object of economic analysis, but for Simon the actual behaviour of economic agents is the essential theme of that analysis. With this change in the way of understanding economic analysis many fundamental implications have been developed in many areas of economic research. In the present article the problem of the housing shortage in the city of Buenos Aires (Argentina is examined, focusing on the occupation of a public space by homeless people. The argument is that the free capitalist market is incapable, because of its internal dynamics, of solving that kind of problem in emergent countries. Herbert Simon planteó en 1979 una nueva manera de pensar la teoría de la firma, según la cual la racionalidad económica ya no era pensada a la manera de Milton Friedman, es decir, como maximización de la utilidad o del beneficio empresario. Esta crítica de Simon inauguró una serie de cuestionamientos a la ciencia económica dominante. Independientemente de las críticas metodológicas de fondo que pueden formularse contra la tesis de Friedman, la posición que propone Simon involucra un cambio de óptica, porque mientras que la teoría de la firma y en general del comportamiento económico está en Friedman y el “modelo clásico” subordinada a la teoría de los mercados y de los precios entendida como el objeto

  4. Bioceres: AG Biotechnology from Argentina

    Directory of Open Access Journals (Sweden)

    Roberto Feeney

    2016-04-01

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

  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. Inequidad social, lugar de residencia y muerte prematura por cualquier causa en la Argentina

    Directory of Open Access Journals (Sweden)

    Alejandro Macchia

    2016-04-01

    Full Text Available Introducción: Aunque recientemente se reportó la relación entre la muerte prematura y la condición socioeconómica en laArgentina, no existen análisis sobre el impacto que dicha condición tiene en distintas regiones del país.Objetivo: Describir el impacto que la condición socioeconómica presentó sobre la incidencia de muerte prematura en las distintasprovincias de la Argentina durante el período 2000-2010. Material y métodos: Se utilizó un modelo ecológico, que evaluó las tasas estandarizadas de muerte prematura (≤ 74 añosdurante el período 2000-2010. Asimismo, se examinó la relación entre la condición socioeconómica medida en deciles denecesidades básicas insatisfechas por departamento geográfico y la muerte prematura. La unidad de análisis fueron los 512departamentos de la Argentina y las 15 comunas de la ciudad de Buenos Aires. Resultados: La condición socioeconómica estuvo significativamente asociada con la muerte prematura en la Argentina durante el período analizado. En todas las provincias y regiones se observó un gradiente lineal entre la muerte precoz y la condición socioeconómica. Sin embargo, la pendiente de desigualdad entre los componentes de la condición socioeconómica varió significativamente entre los distintos departamentos. Mientras que en toda la Argentina la diferencia absoluta en la tasa estandarizada de muerte prematura entre los componentes extremos de condición socioeconómica fue de 10 muertes (rango:7,81-12,36 por cada 10.000 personas por año, en la ciudad de Buenos Aires esa diferencia fue de 61 muertes (rango: 53-69.Las comunas del sur de la ciudad de Buenos Aires fueron las zonas con mayor desigualdad social y sanitaria de la Argentina. Conclusiones: Aunque la inequidad social tuvo un impacto significativo en la muerte prematura en todo el período en toda la Argentina, la ciudad de Buenos Aires se mostró como la región más desigual.

  7. PHYSICS

    CERN Multimedia

    Guenther Dissertori

    The time period between the last CMS week and this June was one of intense activity with numerous get-together targeted at addressing specific issues on the road to data-taking. The two series of workshops, namely the “En route to discoveries” series and the “Vertical Integration” meetings continued.   The first meeting of the “En route to discoveries” sequence (end 2007) had covered the measurements of the Standard Model signals as necessary prerequisite to any claim of signals beyond the Standard Model. The second meeting took place during the Feb CMS week and concentrated on the commissioning of the Physics Objects, whereas the third occurred during the April Physics Week – and this time the theme was the strategy for key new physics signatures. Both of these workshops are summarized below. The vertical integration meetings also continued, with two DPG-physics get-togethers on jets and missing ET and on electrons and photons. ...

  8. PHYSICS

    CERN Multimedia

    Chris Hill

    2012-01-01

    The months that have passed since the last CMS Bulletin have been a very busy and exciting time for CMS physics. We have gone from observing the very first 8TeV collisions produced by the LHC to collecting a dataset of the collisions that already exceeds that recorded in all of 2011. All in just a few months! Meanwhile, the analysis of the 2011 dataset and publication of the subsequent results has continued. These results come from all the PAGs in CMS, including searches for the Higgs boson and other new phenomena, that have set the most stringent limits on an ever increasing number of models of physics beyond the Standard Model including dark matter, Supersymmetry, and TeV-scale gravity scenarios, top-quark physics where CMS has overtaken the Tevatron in the precision of some measurements, and bottom-quark physics where CMS made its first discovery of a new particle, the Ξ*0b baryon (candidate event pictured below). Image 2:  A Ξ*0b candidate event At the same time POGs and PAGs...

  9. PHYSICS

    CERN Multimedia

    D. Acosta

    2011-01-01

    Since the last CMS Week, all physics groups have been extremely active on analyses based on the full 2010 dataset, with most aiming for a preliminary measurement in time for the winter conferences. Nearly 50 analyses were approved in a “marathon” of approval meetings during the first two weeks of March, and the total number of approved analyses reached 90. The diversity of topics is very broad, including precision QCD, Top, and electroweak measurements, the first observation of single Top production at the LHC, the first limits on Higgs production at the LHC including the di-tau final state, and comprehensive searches for new physics in a wide range of topologies (so far all with null results unfortunately). Most of the results are based on the full 2010 pp data sample, which corresponds to 36 pb-1 at √s = 7 TeV. This report can only give a few of the highlights of a very rich physics program, which is listed below by physics group...

  10. Radionuclide Activity Concentrations in Spas of Argentina

    International Nuclear Information System (INIS)

    Gnoni, G.; Czerniczyniec, M.; Palacios, M.

    2011-01-01

    Geothermal waters have been used on a large scale for bathing, drinking and medical purposes. These waters often have a very high mineral content because solubility increases with temperature. Ground waters are in close contact with soil and rocks containing radium. Once formed by decay from radium, radon gas (Rn-222) may diffuse through rocks pores and geological discontinuities and may dissolve in these waters. Radon and other natural radionuclides are transported to the surface where radon can easily diffuse into the atmosphere. Then it may be possible to find out significant radon levels at places like geothermal spas. In this work the most important natural radionuclide activity concentrations in different thermal spas of Argentina were measured to characterize waters and to evaluate the exposure of workers and members of the public. Three passive methods were used to measure radon in air. One of them is an screening method based on the radon adsorption on activated charcoal. The other two methods are time integrated ones, CR-39 or Makrofol tracks detectors, which can be exposed between two and three months. To characterize waters other natural radionuclides have been also measured. Uranium concentration was measured by fluorimetry. Ra-226 and Pb-210 measurements were performed by radiochemical methods and liquid scintillation. The results obtained were compared with the guidelines values recommended by WHO and EPA for drinking waters and, in the case of radon in air, the results were compared with values established by BSS-115. In order to assess worker doses, the higher value measured for radon in air and real scenario data were taken into account. Moreover, in situ dose rate measurements were also performed and then compared with natural background values. In relation with water characterization, almost all values obtained for the geothermal waters analyzed were below the corresponding guidance levels. Taking into account the highest value measured of radon

  11. The Role of Physical and Physiological Capacities and Their Modification on the Tolerance to Various Stress Experienced by Air Force Personnel

    Science.gov (United States)

    1984-06-30

    2. To partition the energy utilization during HSG and RTE into oxidation of fat and carbohydrate components; and glycogen utilization and lactate...and physical conditioning. Given the entrance of women into the Air Force Academy and the acknowledged interaction of thermoregulation-dehydration on...basketball, wrestling, soccer and cross-country teams. E-7. CO2 Rebreathing Method The final noninvasive method of assessing cardiac function was the

  12. Argentina e Irán entre 1989 y 1999: Entre las sobras de los atentados terroristas y el cambio de política exterior argentina

    Directory of Open Access Journals (Sweden)

    Paulo Botta

    2012-01-01

    Full Text Available Las relaciones argentino-iraníes se encuentran, a nivel político, en el punto más bajo de su historia. Suele afirmarse que tal situación es la relación directa de los atentados terroristas ocurridos en Buenos Aires en 1992 y 1994 donde las autoridades judiciales argentinas han presentado indicios que relacionarían a funcionarios iraníes. En este trabajo se afirma que aunque tales hechos han tenido influencia las relaciones argentino iraníes constituyen una variable dependiente de los modelos de inserción internacional de Argentina. En tal sentido, la década del gobierno de Carlos Menem (1989-1999 es estudiada como modelo para analizar tales cambios en la política exterior argentina y su impacto en las relaciones argentino-iraníes. Por otra parte, se ha incluido en el análisis el papel de lobbies comunitarios como grupos con incidencia en el proceso de toma de decisiones además de considerar las influencias externas como condicionantes de la política exterior argentina.

  13. Education in acoustics in Argentina

    Science.gov (United States)

    Miyara, Federico

    2002-11-01

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

  14. Quality evaluation of Argentina onion irradiated, transported and stored

    International Nuclear Information System (INIS)

    Walder, J.M.M.; Domarco, R.E.; Spoto, M.H.F.; Blumer, L.; Curzio, O.A.; Croci, C.A.

    1995-01-01

    Onion bulbs of the Valenciana Sintetica 14 variety from Argentina were irradiated with a dose of 60 Gy gamma rays at 30-40 days after harvest. Treated and control lots (40 bags of 20 Kg each) were send by road to Piracicaba, SP, Brazil, and stored up to 180 days in a warehouse at 20-28 0 C and relative humidity ranging from 50 to 100%. Monthly quality control was done by physical and sensorial analysis. Radiation treatment reduced the weight loss of the bulbs and increased the percentage of marketable bulbs without affecting its sensorial properties. (author). 4 refs, 8 tabs

  15. PHYSICS

    CERN Multimedia

    Darin Acosta

    2010-01-01

    The collisions last year at 900 GeV and 2.36 TeV provided the long anticipated collider data to the CMS physics groups. Quite a lot has been accomplished in a very short time. Although the delivered luminosity was small, CMS was able to publish its first physics paper (with several more in preparation), and commence the commissioning of physics objects for future analyses. Many new performance results have been approved in advance of this CMS Week. One remarkable outcome has been the amazing agreement between out-of-the-box data with simulation at these low energies so early in the commissioning of the experiment. All of this is testament to the hard work and preparation conducted beforehand by many people in CMS. These analyses could not have happened without the dedicated work of the full collaboration on building and commissioning the detector, computing, and software systems combined with the tireless work of many to collect, calibrate and understand the data and our detector. To facilitate the efficien...

  16. PHYSICS

    CERN Multimedia

    D. Acosta

    2010-01-01

    The Physics Groups are actively engaged on analyses of the first data from the LHC at 7 TeV, targeting many results for the ICHEP conference taking place in Paris this summer. The first large batch of physics approvals is scheduled for this CMS Week, to be followed by four more weeks of approvals and analysis updates leading to the start of the conference in July. Several high priority analysis areas were organized into task forces to ensure sufficient coverage from the relevant detector, object, and analysis groups in the preparation of these analyses. Already some results on charged particle correlations and multiplicities in 7 TeV minimum bias collisions have been approved. Only one small detail remains before ICHEP: further integrated luminosity delivered by the LHC! Beyond the Standard Model measurements that can be done with these data, the focus changes to the search for new physics at the TeV scale and for the Higgs boson in the period after ICHEP. Particle Flow The PFT group is focusing on the ...

  17. PHYSICS

    CERN Multimedia

    the PAG conveners

    2011-01-01

    The delivered LHC integrated luminosity of more than 1 inverse femtobarn by summer and more than 5 by the end of 2011 has been a gold mine for the physics groups. With 2011 data, we have submitted or published 14 papers, 7 others are in collaboration-wide review, and 75 Physics Analysis Summaries have been approved already. They add to the 73 papers already published based on the 2010 and 2009 datasets. Highlights from each physics analysis group are described below. Heavy ions Many important results have been obtained from the first lead-ion collision run in 2010. The published measurements include the first ever indications of Υ excited state suppression (PRL synopsis), long-range correlation in PbPb, and track multiplicity over a wide η range. Preliminary results include the first ever measurement of isolated photons (showing no modification), J/ψ suppression including the separation of the non-prompt component, further study of jet fragmentation, nuclear modification factor...

  18. PHYSICS

    CERN Multimedia

    L. Demortier

    Physics-wise, the CMS week in December was dominated by discussions of the analyses that will be carried out in the “next six months”, i.e. while waiting for the first LHC collisions.  As presented in December, analysis approvals based on Monte Carlo simulation were re-opened, with the caveat that for this work to be helpful to the goals of CMS, it should be carried out using the new software (CMSSW_2_X) and associated samples.  By the end of the week, the goal for the physics groups was set to be the porting of our physics commissioning methods and plans, as well as the early analyses (based an integrated luminosity in the range 10-100pb-1) into this new software. Since December, the large data samples from CMSSW_2_1 were completed. A big effort by the production group gave a significant number of events over the end-of-year break – but also gave out the first samples with the fast simulation. Meanwhile, as mentioned in December, the arrival of 2_2 meant that ...

  19. PHYSICS

    CERN Multimedia

    C. Hill

    2012-01-01

      2012 has started off as a very busy year for the CMS Physics Groups. Planning for the upcoming higher luminosity/higher energy (8 TeV) operation of the LHC and relatively early Rencontres de Moriond are the high-priority activities for the group at the moment. To be ready for the coming 8-TeV data, CMS has made a concerted effort to perform and publish analyses on the 5 fb−1 dataset recorded in 2011. This has resulted in the submission of 16 papers already, including nine on the search for the Higgs boson. In addition, a number of preliminary results on the 2011 dataset have been released to the public. The Exotica and SUSY groups approved several searches for new physics in January, such as searches for W′ and exotic highly ionising particles. These were highlighted at a CERN seminar given on 24th  January. Many more analyses, from all the PAGs, including the newly formed SMP (Standard Model Physics) and FSQ (Forward and Small-x QCD), were approved in February. The ...

  20. PHYSICS

    CERN Document Server

    C. Hill

    2012-01-01

      The period since the last CMS Bulletin has been historic for CMS Physics. The pinnacle of our physics programme was an observation of a new particle – a strong candidate for a Higgs boson – which has captured worldwide interest and made a profound impact on the very field of particle physics. At the time of the discovery announcement on 4 July, 2012, prominent signals were observed in the high-resolution H→γγ and H→ZZ(4l) modes. Corroborating excess was observed in the H→W+W– mode as well. The fermionic channel analyses (H→bb, H→ττ), however, yielded less than the Standard Model (SM) expectation. Collectively, the five channels established the signal with a significance of five standard deviations. With the exception of the diphoton channel, these analyses have all been updated in the last months and several new channels have been added. With improved analyses and more than twice the i...