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Sample records for aires argentina association

  1. Factors associated with H pylori epidemiology in symptomatic children in Buenos Aires, Argentina

    Institute of Scientific and Technical Information of China (English)

    Cinthia Goldman; Ricardo Weill; Marcela Zubillaga; Guillermo I Perez-Perez; José Boccio; Andrés Barrado; Mariana Janjetic; Norma Balcarce; Eduardo Cueto Rua; Masaru Oshiro; María L Calcagno; Margarita Martinez Sarrasague; Julián Fuda

    2006-01-01

    AIM: To determine prevalence of H pylori infection in symptomatic children in Buenos Aires, Argentina, and to investigate factors associated with H pylori positivity.METHODS: A total of 395 children with upper gastrointestinal symptoms referred to the Gastroenterology Unit of the Children Hospital "Sor Maria Ludovica"were evaluated for the presence of H pylori by the 13C-Urea Breath Test (13C-UBT). A questionnaire was applied to the recruited population.RESULTS: Prevalence of H pylori infection was 40.0% in tlis population (mean age 9.97 ± 3.1 years). The factors associated with H pylori positivity were number of siblings (P < 0.001), presence of pet cats (P = 0.03)and birds (P = 0.04) in the household, and antecedents of gastritis among family members (P = 0.01). After multivariate analysis, number of siblings [Odds ratio (OR)= 1.39; 95% CI, 1.20-1.61] and contact with pet cats (OR = 1.76; 95% CI, 1.00-3.09) remained as variables associated with H pylori infection.CONCLUSION: The prevalence of H pylori infection in children with upper gastrointestinal symptoms in Argentina was similar to that reported in developed countries. Children from families with a higher crowding index and presence of pet cats have a higher risk of being colonized with H pylori.

  2. Prospective multicenter study of community-associated skin and skin structure infections due to methicillin-resistant Staphylococcus aureus in Buenos Aires, Argentina.

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    María José López Furst

    Full Text Available BACKGROUND: Community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA is now the most common cause of skin and skin structure infections (SSSI in several world regions. In Argentina prospective, multicenter clinical studies have only been conducted in pediatric populations. OBJECTIVE: PRIMARY: describe the prevalence, clinical and demographic characteristics of adult patients with community acquired SSSI due to MRSA; secondary: molecular evaluation of CA-MRSA strains. Patients with MRSA were compared to those without MRSA. MATERIALS AND METHODS: Prospective, observational, multicenter, epidemiologic study, with molecular analysis, conducted at 19 sites in Argentina (18 in Buenos Aires between March 2010 and October 2011. Patients were included if they were ≥ 14 years, were diagnosed with SSSI, a culture was obtained, and there had no significant healthcare contact identified. A logistic regression model was used to identify factors associated with CA-MRSA. Pulse field types, SCCmec, and PVL status were also determined. RESULTS: A total of 311 patients were included. CA-MRSA was isolated in 70% (218/311 of patients. Clinical variables independently associated with CA-MRSA were: presence of purulent lesion (OR 3.29; 95%CI 1.67, 6.49 and age <50 years (OR 2.39; 95%CI 1.22, 4.70. The vast majority of CA-MRSA strains causing SSSI carried PVL genes (95% and were SCCmec type IV. The sequence type CA-MRSA ST30 spa t019 was the predominant clone. CONCLUSIONS: CA-MRSA is now the most common cause of SSSI in our adult patients without healthcare contact. ST30, SCCmec IV, PVL+, spa t019 is the predominant clone in Buenos Aires, Argentina.

  3. Spider fauna associated with wheat crops and adjacent habitats in Buenos Aires, Argentina Araneofauna asociada a cultivos de trigo y hábitats adyacentes en Buenos Aires, Argentina

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    Andrea Armendano

    2011-12-01

    Full Text Available A census of spiders was undertaken in winter wheat fields of Buenos Aires province, Argentina, as well as from their margins and from wheat stubble. Spiders were collected weekly over 3 consecutive years using entomological sweeping and pitfall traps. Field margins were the richest and densest habitats (H'= 3.27, J'= 0.82 and registered 52 species from 14 families, while 31 species from 13 families were found in wheat. Thomisidae and Araneidae were the most abundant families in the herbaceous layer of both the margins and the crop, and Lycosidae in the soil litter. In contrast, 17 species from 8 families were recorded from wheat stubble, making it the least diverse habitat surveyed (H'= 1.67, J'= 0.72. These results could be related to repeated disturbance of wheat fields by harvest, tillage and other field work. Furthermore, the similarity observed in the families of both margin and crop communities indicates that colonization of wheat fields is from the adjacent areas.Se realizó un censo de arañas en cultivos de trigo de invierno de la provincia de Buenos Aires, Argentina, así como en sus márgenes y en el rastrojo. Las arañas fueron recolectadas semanalmente con redes entomológicas y trampas de caída durante 3 años consecutivos. El margen del cultivo fue el hábitat más rico y más denso (H'= 3.27, J'= 0,82 y registró un total de 52 especies pertenecientes a 14 familias, mientras que en el cultivo de trigo se encontraron 31 especies pertenecientes a 13 familias. Thomisidae y Araneidae fueron las familias más abundantes en el estrato herbáceo (tanto en los márgenes como en el cultivo y Lycosidae en el suelo; mientras que en el rastrojo del trigo se registraron 17 especies representantes de 8 familias y fue el hábitat menos diverso (H'= 1.67, J'= 0,72. Estos resultados podrían estar relacionados con el disturbio repetido, debidos a la cosecha, la labranza y otros trabajos de campo. Por otra parte, la similitud observada entre las

  4. 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

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    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

  5. Low frequency of male circumcision and unwillingness to be circumcised among MSM in Buenos Aires, Argentina: association with sexually transmitted infections

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    María A Pando

    2013-06-01

    Full Text Available Objective: The aims of this study were to investigate the frequency of male circumcision among men who have sex with men (MSM in Buenos Aires, Argentina; the association between circumcision and sexually transmitted infections (STIs; and, among those uncircumcised, the willingness to be circumcised. Methods: A cross-sectional study was conducted among 500 MSM recruited through the respondent-driven sampling (RDS technique. Participants underwent a consent process, responded to a Web-based survey that included questions on demographic information, sexual behaviour, and circumcision and provided biological samples. HIV, hepatitis B virus (HBV, hepatitis C virus (HCV, Treponema pallidum, and human papiloma virus (HPV diagnoses were performed using standard methodologies. For all analyses, data were weighted based on participants’ network size. Results: Only 64 (13% of the 500 MSM in our study reported being circumcised. Among uncircumcised men (n=418, 302 (70.4% said that they would not be willing to get circumcised even if the procedure could reduce the risk of HIV infection. When considering all participants, circumcision status was not significantly associated with HIV, HBV, HCV, T. pallidum or HPV infections. However, when we restricted the sample to men who do not practice receptive anal intercourse (RAI and compared circumcised to uncircumcised men, the former (N=33 had no cases of HIV infection, while 34 of 231 (14.8% uncircumcised men were HIV positive (p=0.020. Regarding HPV, uncircumcised men had a significantly larger number of different HPV types compared with circumcised men (mean 1.83 vs. 1.09, p<0.001 and a higher frequency of high-risk-HPV genotypes (47.6% vs. 12.5%, p=0.012. Conclusions: Consistent with international evidence, male circumcision appears to have a partial protective effect among MSM. The efficacy of circumcision in reducing risk of HIV infection among MSM appears to be correlated with sexual practices. Given the

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

    International Nuclear Information System (INIS)

    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. Welcoming Address (by E. Curia) [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)

    Full text: Distinguished participants of the 12th Congress of the International Radiation Protection Association, IRPA. On behalf of the Government of Argentina, it is an honour and a pleasure for me to welcome you most warmly to our country, in my capacity as Governor to the International Atomic Energy Agency and also in my current role as the 2008-2009 President of ARCAL, the Co-operation Agreement for the Promotion of Nuclear Science and Technology in Latin America and the Caribbean. I would just like to mention that Argentina's bid to host this important Congress was declared to be in the national interest by the president of Argentina in 2004. From the moment it was decided that Buenos Aires would host this important 12th IRPA Congress, the Government of Argentina, aware of its importance, supported its organization and publicity in all countries and in the international organizations involved in the field of radiation protection. We also maintained ongoing contacts with a large number of diplomatic missions accredited to Argentina to promote extensive international participation in the Congress. As a result of these efforts, the Congress has received the co-sponsorship and support of the International Atomic Energy Agency (IAEA), the World Health Organization (WHO) and the Pan American Health Organization (PAHO). These international organizations are also organizing a great many scientific satellite events in connection with IRPA12, which are taking place at various locations around the city of Buenos Aires. In witness of these efforts and their successful results, it is no surprise that this Congress has attracted over 1500 papers, and we are confident that once everyone has checked in, we will have over 1300 experts and officials here from more than 80 countries. This has made IRPA12, without a doubt, one of the largest international events in this field. Esteemed participants, in the four years that have passed since the 11th Congress in Madrid, there have

  8. Close encounters Brazil and Argentina: Adhemar Gonzaga in Buenos Aires

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    Arthur Autran

    2013-12-01

    Full Text Available This paper focuses on the relations between the cinematography of Argentina and the cinematography of Brazil in the 1930s and 1940s, with the central axis Adhemar Gonzaga’s visit to Buenos Aires in 1934 and the contacts established there. The paper also discusses the tour of Hollywood star Ramón Novarro in South America, one of the motivations of the trip of Gonzaga.

  9. Spatial analysis of the tuberculosis treatment dropout, Buenos Aires, Argentina

    Science.gov (United States)

    Herrero, María Belén; Arrossi, Silvina; Ramos, Silvina; Braga, Jose Ueleres

    2015-01-01

    OBJECTIVE Identify spatial distribution patterns of the proportion of nonadherence to tuberculosis treatment and its associated factors. METHODS We conducted an ecological study based on secondary and primary data from municipalities of the metropolitan area of Buenos Aires, Argentina. An exploratory analysis of the characteristics of the area and the distributions of the cases included in the sample (proportion of nonadherence) was also carried out along with a multifactor analysis by linear regression. The variables related to the characteristics of the population, residences and families were analyzed. RESULTS Areas with higher proportion of the population without social security benefits (p = 0.007) and of households with unsatisfied basic needs had a higher risk of nonadherence (p = 0.032). In addition, the proportion of nonadherence was higher in areas with the highest proportion of households with no public transportation within 300 meters (p = 0.070). CONCLUSIONS We found a risk area for the nonadherence to treatment characterized by a population living in poverty, with precarious jobs and difficult access to public transportation. PMID:26270011

  10. Market Report : The air pollution control market in Argentina

    International Nuclear Information System (INIS)

    This report presents some facts about how Canadian companies can work within the many innovative programs designed by the Canadian federal government to facilitate the export of Canadian products and services into the Argentine air pollution control market. As the economy stabilizes in Argentina, more effort is being given to issues of environmental protection and the Argentine government is increasing funding on environmental programs. The country is also strengthening its environmental legislation and increasing enforcement. The Kyoto and Montreal Protocols have brought attention to air quality issues such as climate change, emissions trading, and ozone depleting substances. Several initiatives currently focus on air quality monitoring and data collection since much information has to be gathered on air pollution levels. Emission control equipment for chemical, petrochemical, mining and power sectors are the best prospects for air pollution control, along with monitoring equipment, consulting services and fuel conversion equipment for vehicles and industrial plants. It was noted that there are legal and practical difficulties regarding new contract negotiations in Argentina, particularly with the decline in credit availability. This paper outlined the key factors shaping market growth. Most opportunities lies with projects funded by international financial institutions. The report includes a section on international competition, and the Canadian position for both private- and public-sector companies. A section on market logistics focused on issues such as direct sales, import regulations, and export credit risks. It is recommended that companies interested in the Argentine market contact the Embassy in Buenos Aires for information. refs., tabs

  11. Argentina

    International Nuclear Information System (INIS)

    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

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

    OpenAIRE

    Codesido, M.; Bilenca, D.

    2011-01-01

    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...

  13. Vivienda unifamiliar, en Buenos Aires (Argentina

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    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.

  14. Los Ceratopogonidae (Diptera: Culicomorpha del Sistema Serrano de Ventania (Buenos Aires, Argentina The Ceratopogonidae (Diptera: Culicomorphafrom the Sistema Serrano de Ventania (Buenos Aires, Argentina

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    Pablo I. Marino

    2011-12-01

    Full Text Available Se brinda un listado de especies de ceratopogónidos presentes en el Sistema Serrano de Ventania, Buenos Aires, Argentina. Se realizaron seis viajes de estudio y se relevaron nueve sitios de muestreo. Se identificaron 25 especies pertenecientes a ocho géneros, de las cuales sólo Culicoides venezuelensis y Brachypogon (Brachypogon bonaerensis han sido citadas previamente para el área. Ocho especies se registran por primera vez para la provincia de Buenos Aires y una para Argentina.A list of the ceratopogonid species from the Sistema Serrano de Ventania, Buenos Aires, Argentina is presented. Six field trips were carried out sampling nine different localities. Twenty five species of ceratopogonids belonging to eight genera were recorded; only Culicoides venezuelensis and Brachypogon (Brachypogon bonaerensis were known from the area. Eight species are reported for the first time from Buenos Aires province and one from Argentina.

  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

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    Andrea V. Andorno

    2007-07-01

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

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

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    Eyherabide Juan José

    2001-01-01

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

  17. Opening Address (by P. Metcalf) [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)

    On behalf of IRPA I wish to thank the Government of Argentina for welcoming IRPA to Buenos Aires and the Argentinean Radiation Protection Association for offering to host IRPA12 four years ago and for its tireless efforts over the past four years to bring IRPA12 to fruition. It is particularly fitting for IRPA to convene in Buenos Aires, home for many years of one of the icons of radiation protection, the late Dr. Dan Beninson, one of the early council members of IRPA and recipient of the 1996 Sievert award. IRPA12 - 'Strengthening Radiation Protection Worldwide' could not occur at a more relevant time in history. Global concerns over energy supply and climate change have given rise to serious reconsideration of nuclear energy around the world and the re-emergence of the nuclear industry appears inevitable, even through the current economic crisis gives rise to some delay. In addition to the re-emergence of nuclear energy, medical uses of radiation and radioactive materials have accelerated in both volume and complexity at an unprecedented rate. A considerable number of countries are contemplating the introduction of nuclear energy for the first time, and the shifting world economy is spreading and broadening the use of advanced technologies - including nuclear and radiation related technologies - to many parts of the world. Another dimension of which we are all mindful is current concern over the possible use of radioactive material for malicious purposes and the increasing focus on security of radioactive materials in all forms. In a similar vein, the use of ionizing radiation as a security screening tool gives rise to some difficult questions. The advent of binding international safety conventions and codes on nuclear, radiation and radioactive waste safety in recent years has led the emergence of a global safety regime calling for high standards of safety to be established, maintained and demonstrated. These developments in turn have created a need for

  18. El turismo en la Atlántida norte. Estudio del Partido de la Costa. (Provincia de Buenos Aires - Argentina)

    OpenAIRE

    ANNESSI, GUSTAVO JAVIER

    2015-01-01

    [EN] Summary This doctoral thesis analyses the tourism system of La Costa District, which is located in the northeast of the Province of Buenos Aires (Argentina); in general terms, it studies the diffe-rent components and its multiple relations with the physical and natural environment as well as the living conditions of its population. In the last decades, one of the fastest demographic growth has taken place in La Costa District; this is also associated to its popularity as a holiday...

  19. Under the rainbow : the Civil Union Law and sexual minority activism in Buenos Aires, Argentina

    OpenAIRE

    2008-01-01

    The subject of this thesis is the implementation of the Civil Union Law in Buenos Aires, Argentina. The law was the first one in Latin America to recognize same-sex couples. The law is a result of changing conceptions of homosexuality in Argentina during the last few decades. In this time period Argentina has made the transition from an oppressive dictatorship to democracy. Argentina’s recent history has brought about a public awareness about human rights and the AIDS epidemic generated a pub...

  20. Argentina

    International Nuclear Information System (INIS)

    The history of Argentina nuclear development can be summarized into two periods: 'splendour' and 'stand-by'. The former starting in the decade of the 1950s until the late 1970s while the latter period goes from the late 1970s to 2006. The first period (1950-1980) was characterized by a national policy of scientific and technological development; State intervention in the area of industrial production. The military aspects, if any, were marginal in the context of the overall development. During this period, important public scientific technological projects were carried out: the production and sale of experimental reactors, nuclear plants (Atucha I and Embalse), and some projects aimed to developing national industry. The stimulus experienced in the country in this period accompanied the role of nuclear technology worldwide due to the Cold War and the persuasion factor among the main powers. However, during the 1970s and 1980s the whole world started questioning these technologies which ran parallel to the liberalization of the countries economies. The second period (1980s onwards) was characterized by many economic problems and the consequent transitory stop of national nuclear projects; e.g. Argentina transitory stopped its third nuclear plant (at present under construction). At that moment, neoliberal politics were aimed at reducing the role of the State and promoting privatization, separating nuclear projects from governmental control, trying to privatize the nuclear plants, and cutting scientific budgets. Argentina has two nuclear power plants in operation providing 8.6% of the total country's electricity. A third one, 692 MW(e) power reactor PHWR Atucha-2 construction was stopped in the 1990s and re-started in 2007 it is expected to be in commercial operation by 2011). Argentina nuclear power plants utility, NA S.A. is preparing the refurbishment of its CANDU-6 reactor. Argentina Atomic Energy Commission (CNEA) has a prototype of its CAREM nuclear power plant

  1. Factors associated with healthcare avoidance among transgender women in Argentina

    OpenAIRE

    Socías, María Eugenia; Marshall, Brandon DL; Arístegui, Inés; Romero, Marcela; Cahn, Pedro; Kerr, Thomas; Sued, Omar

    2014-01-01

    Introduction Transgender (TG) women in many settings continue to contend with barriers to healthcare, including experiences of stigma and discrimination. Argentina has a universal health care system and laws designed to promote healthcare access among TG women. However, little is known about barriers to healthcare access among TG women in this setting. The aim of this study was to explore individual, social-structural and environmental factors associated with healthcare avoidance among TG wom...

  2. Hantavirus reservoir hosts associated with peridomestic habitats in Argentina.

    OpenAIRE

    G. Calderón; N Pini; Bolpe, J.; Levis, S.; Mills, J; Segura, E.; Guthmann, N.; Cantoni, G.; Becker, J.; Fonollat, A.; Ripoll, C.; Bortman, M.; Benedetti, R.; D Enria

    1999-01-01

    Five species of sigmodontine rodents have been identified in Argentina as the putative reservoirs of six circulating hantavirus genotypes. Two species of Oligoryzomys are associated with the genotypes causing hantavirus pulmonary syndrome, Oligoryzomys flavescens for Lechiguanas and O. longicaudatus for Andes and Oran genotypes. Reports of human cases of hantavirus pulmonary syndrome prompted rodent trapping (2,299 rodents of 32 species during 27,780 trap nights) at potential exposure sites i...

  3. 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.

  4. 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.

  5. Argentina

    International Nuclear Information System (INIS)

    One article from Argentina where is developed the proceedings before the Federal criminal court of First instance concerning environmental radiological contamination near the Eizeiza centre. A second article from Canada treats the federal court of appeal decision respecting the Mac Clean lake project; two articles from France, judgement of the court of appeal on Caen on the licence to reprocess Australian spent fuel, and judgement of the magistrates court of Limoges concerning dumping of radioactive waste by COGEMA; the last one article from Japan, concerns the judgement of the japanese supreme court confirming the validity of the licence to establish the Monju reactor. (N.C.)

  6. Otomiasis por Cochliomyia hominivorax en dos niños del conurbano bonaerense, Argentina Otomyiasis by Cochliomyia hominivorax in two children from the outskirts of Buenos Aires, Argentina

    OpenAIRE

    C. I. Menghi; C. L. Gatta; A. Oliva

    2010-01-01

    Cochliomyia hominivorax es causante del 80% de las miasis humanas en la Argentina. En la actualidad, su distribución geográfica abarca Sudamérica tropical y gran parte de Argentina. En el presente informe se describen dos casos clínicos de otomiasis por C. hominivorax en pacientes pediátricos atendidos en el Hospital de Clínicas de Buenos Aires, Argentina. La importancia de la identificación taxonómica radica en el hecho de que esta especie produce cuadros graves debido a la capacidad de sus ...

  7. 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.

  8. 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

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

    Science.gov (United States)

    Menghi, Claudia Irene; Gatta, Claudia Liliana

    2011-01-01

    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 ocular hydatidosis diagnosed in the city of Buenos Aires, Argentina. PMID:21412595

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

    Directory of Open Access Journals (Sweden)

    Claudia Irene Menghi

    2011-02-01

    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.

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

    Directory of Open Access Journals (Sweden)

    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.

  12. 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

  13. 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.

  14. Argentina

    Directory of Open Access Journals (Sweden)

    Hernan Galperin

    2004-01-01

    Full Text Available En este trabajo se analizan las bases sobre las que se está desarrollando el proceso de transición hacia la TV digital en Brasil y Argentina, y se discuten las posibilidades que la transición presenta para replantear la estructura de mercado y el modelo de regulación de la TV abierta en los países del Mercosur. La principal hipótesis es que la TV digital abre una oportunidad única para reformar el actual modelo de radiodifusión basado en la concesión de un número reducido de licencias a operadores de tipo generalista. Al multiplicar la capacidad de transmisión y facilitar el desarrollo de servicios interactivos tanto de entretenimiento como educativos y de información, la transición a la TV digital se ofrece como instrumento de política pública para alcanzar objetivos clave en materia de comunicación, como el pluralismo, la apertura del mercado y el achicamiento de la llamada brecha digital.

  15. Ecotoxicological and Genotoxic Evaluation of Buenos Aires City (Argentina) Hospital Wastewater

    OpenAIRE

    Anahí Magdaleno; Ángela Beatriz Juárez; Valeria Dragani; Magalí Elizabeth Saenz; Marta Paz; Juan Moretton

    2014-01-01

    Hospital wastewater (HWW) constitutes a potential risk to the ecosystems and human health due to the presence of toxic and genotoxic chemical compounds. In the present work we investigated toxicity and genotoxicity of wastewaters from the public hospital of Buenos Aires (Argentina). The effluent from the sewage treatment plant (STP) serving around 10 million inhabitants was also evaluated. The study was carried out between April and September 2012. Toxicity and genotoxicity assessment was per...

  16. Functional Foods and Nutraceuticals in a Market of Bolivian Immigrants in Buenos Aires (Argentina)

    OpenAIRE

    Julio A. Hurrell; Ulibarri, Emilio A.; Fernando Buet Costantino; Arenas, Patricia M.; Jeremías P. Puentes; María Lelia Pochettino

    2012-01-01

    This paper presents the results of a research in urban ethnobotany, conducted in a market of Bolivian immigrants in the neighborhood of Liniers, Ciudad Autónoma de Buenos Aires (Argentina). Functional foods and nutraceuticals belonging to 50 species of 18 families, its products, and uses were recorded. Some products are exclusive from the Bolivian community; others are frequent within the community, but they are also available in the general commercial circuit; they are introduced into it, ge...

  17. Endoparasitic infections in dogs from rural areas in the Lobos District, Buenos Aires province, Argentina.

    Science.gov (United States)

    Dopchiz, Marcela Cecilia; Lavallén, Carla Mariela; Bongiovanni, Roberto; Gonzalez, Patricia Verónica; Elissondo, Celina; Yannarella, Francisco; Denegri, Guillermo

    2013-01-01

    Dogs are definite hosts for several zoonotic helminthes and protozoan. Rural areas from the Lobos District in the northeast of Buenos Aires province, Argentina, are mainly used for livestock activity, increasing in this way the number of dogs on farms as well as the human risk of parasitic infections. The aims of this research were to evaluate the endoparasitic infections in dogs from farms in the Lobos District and analyze their zoonotic importance as well as several risk practices and habits of the rural population. Forty-two dog fecal samples obtained in 21 farms were analyzed through coproparasitological methods and coproantigen tests, which resulted in an overall parasite prevalence of 69.05% and 80.95% of the parasitized farms. The most frequent parasites were Trichuris vulpis and Eucoleus aerophila (26.19%), Echinococcus granulosus (19.05%), Uncinaria stenocephala and coccids (14.29%). The analysis of epidemiological files showed several habits of the rural population considered as risk factors associated with the presence of fecal samples parasitized and the presence of E. granulosus on the farms. It is clear that people involved with the farms studied were exposed to several helminthes that could cause serious diseases like cystic echinococcosis, which can become an important public health issue and affect the economy worldwide. PMID:23538502

  18. 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

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

    International Nuclear Information System (INIS)

    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 km2 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)

  20. 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.

  1. Multiple infections and associated risk factors among non-injecting cocaine users in Argentina Infecciones múltiples y factores de riesgo asociados entre usuarios de cocaína no inyectable en Argentina

    OpenAIRE

    Diana Rossi; Graciela Radulich; Estela Muzzio; Jorge Naveira; Sergio Sosa-Estani; Jorge Rey; Gloria Griemberg; Friedman, Samuel R.; Liliana Martínez-Peralta; Mercedes Weissenbacher

    2008-01-01

    The aim of this study was to estimate the seroprevalence rates of human immunodeficiency virus (HIV), hepatitis B virus (HBV, core antibody), hepatitis C virus (HCV), and syphilis infections and analyze associated risk factors among 504 non-injecting cocaine users (NICU) in Buenos Aires, Argentina. Participants were interviewed in face-to-face sessions through a short structured questionnaire. Using venipuncture, 10mL of blood was collected. Seroprevalence rates were: HIV (6.3%), HBV (9%), HC...

  2. Flora vascular de humedales permanentes y transitorios bonaerenses (Buenos Aires, Argentina)

    OpenAIRE

    Passarelli, Lilian Mónica; Rolleri, Cristina Hilda; Ciciarelli, María de las Mercedes; Dedomenici, Ana Clara; González, Graciela

    2014-01-01

    Este trabajo presenta un análisis de las fitocenosis y listas actualizadas de la flora vascular (con excepción de las Poaceae) de dos humedales permanentes, La Balandra y la Isla Santiago, y de varios humedales temporarios (arroyo Rodríguez, arroyo El Gato, y otros) de las zonas costeras del Río de La Plata (provincia de Buenos Aires, Argentina). El estudio se basó en el trabajo de campo y el seguimiento estacional de las comunidades silvestres entre los años 2005 y 2011, con un registro de 1...

  3. Populus spp.: supervivencia y crecimiento en clones implantados en Buenos Aires, Argentina

    OpenAIRE

    Marlats, Raúl M.; Senisterra, Gabriela; Marquina, Jorge; Ciocchini, Gabriel R.

    2009-01-01

    El objetivo de este trabajo fue evaluar la supervivencia, evolución de las alturas y áreas basales de rebrotes de clones de Populus spp. de diferentes procedencias implantados en Argiudoles típicos del borde Sur de la Pampa Ondulada, Buenos Aires, Argentina (34°55' S; 57°57' W; 15 m snm). Los clones evaluados fueron ‘Delta Gold’, ‘Stoneville 71’, ‘Catfish 2’, ‘Harvard’, ‘Onda’ e ‘I-74/51’. Se compararon, para el conjunto de clones, los comportamientos para el primero y segundo corte. Se re...

  4. Opening Address (by A. Gonzales) [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)

    We are glad to welcome all of you, arriving from the four corners of the world, to our city Buenos Aires. Preparatory work for the 12th International Congress of the International Radiation Protection Association (IRPA12) is complete. Great personal efforts and immense professional dedication from many unnamed people has made this possible. The renowned IRPA Congress will take place for the first time in Latin America and will be attended by a massive audience arriving from more than 80 countries around the world. This is the first time in the history of IRPA Congresses that such 'internationalization' is taking place. IRPA12 marks a turning point; IRPA's intentions to globalize the profession are actually being realized and IRPA12's motto, 'strengthening radiation protection worldwide' is coming into effect. The unremitting work of IRPA12's programme and support committees has led to achievement of their main aims, namely: (i) a renewed scientific programme that will give an exceptional overview of the latest developments in the science and practice of radiation protection, coupled with a novel programme of refresher courses and tutorial seminars that include professional accreditation for the first time, and; (ii) generous support for scientists from developing countries who will have the opportunity to attend an IRPA Congress

  5. 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.

  6. Air quality monitoring system using lichens as bioindicators in Central Argentina.

    Science.gov (United States)

    Estrabou, Cecilia; Filippini, Edith; Soria, Juan Pablo; Schelotto, Gabriel; Rodriguez, Juan Manuel

    2011-11-01

    Air quality studies with bioindicators have not been well developed in South America. In the city of Córdoba, there are not permanent air pollutant measurements by equipment. In order to develop an air quality biomonitoring system using lichens, we applied a systematic sampling in the city of Córdoba, Argentina. A total of 341 plots were sampled in the area of the city which is a square of 24 × 24 km. In each sample plot we selected three phorophytes and estimated the frequency and cover of lichen species growing at 1.5 m on trunks. We also calculated the Index of Atmospheric Purity (IAP) using lichen frequencies. Maps with number of lichen species, cover values, and IAP were performed. The lichen community was described with nine species where Physcia undulata and Physcia endochryscea were the most frequent. Moreover, these two species were dominant in the community with the highest cover index. The central area of the city is considered a lichen desert with poor air quality. The southeast and northwest areas of the city showed the highest IAP values and number of species. In general, the city shows fair air quality and few areas with good and very good air quality. PMID:21336488

  7. "Zafar," So Good: Middle-Class Students, School Habitus and Secondary Schooling in the City of Buenos Aires (Argentina)

    Science.gov (United States)

    Meo, Analia Ines

    2011-01-01

    This article examines how students from the "loser" sections of the middle class dealt with the game of secondary schooling in a "good" state school in the city of Buenos Aires (Argentina). It engages with Bourdieu's theory of social practice and, in particular, with its concepts of game, habitus and cultural capital. It argues that middle-class…

  8. Composition and mutagenicity of PAHs associated with urban airborne particles in Córdoba, Argentina

    International Nuclear Information System (INIS)

    The comet assay and micronucleous test were used to assess the genotoxicity of organic compounds associated with particulate material collected in the city of Córdoba, Argentina. Samples were collected on fiber glass filters and their organic extracts were analyzed by GC-MS. These extracts were used for the comet assay on human lymphocytes and for the MCN test with Tradescantia pallida. The concentrations of polycyclic aromatic hydrocarbons as well as some of their nitro derivates were higher during winter. Their composition suggested that their main emission sources were gasoline and diesel vehicles. We observed genotoxic effects of these organic extracts due to the presence of both direct and indirect acting mutagens. We found a good agreement between the two test systems employed, which encourages the further use of plant bioassays for air pollution monitoring, especially in developing countries, due to their flexibility, low cost and efficiency. -- Highlights: •PAHs and nitro-PAHs were higher during winter and fall seasons. •Concentrations of PAHs were below the daily potential dose of carcinogenic PAH. •The comet assay revealed that indirect mutagens were more abundant than direct ones. •The MCN test and the comet assay demonstrated the presence of human carcinogens. -- Capsule: Indirect mutagens were more abundant during winter and fall, in agreement with the higher concentrations of PAHs and nitro-PAHs being associated with atmospheric particles

  9. Sale of medicinal herbs in pharmacies and herbal stores in Hurlingham district, Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Hernán G. Bach

    2014-04-01

    Full Text Available In this paper, the sale of medicinal plants was described in the urban city of Buenos Aires, Argentina. Semi-structured interviews were conducted with pharmacists and herb store owners about different characteristics of retail. Likewise, different types of retailers were compared, and the phytomedicine degree of acceptance was consulted. The percentage of customers who buy medicinal plants in herb stores is higher than in pharmacies. The five most demanded species were: "malva" (Malva sp., 18%; "manzanilla" (Matricaria recutita, 13%; "tilo" (Tiliasp., 12%; "cuasia" (Picrasma crenata, 8%; and "boldo" (Peumus boldus, 7%. In like manner, the most demanded mixes of species were those that had slimming properties, 21%; digestive, 17%; sedative and diuretic, 13%. Of the 32 most frequently requested species, only 13 are native. Phytomedicines were widely accepted in the different kinds of retail stores. It was also emphasized that, contrary to the usual assumption, the choice to consume plants is cultural rather than economic. Due to the acceptance observed in the use of phytomedicines, it must be emphasized the potential that Argentina possesses for the development of this industry.

  10. Understanding Resilience and Risks : A Qualitative Case Study of International Disaster Policy and Informal Settlements in Buenos Aires, Argentina

    OpenAIRE

    Hero, John

    2015-01-01

    This study is the result of a two-year long minor field study project of informal settlements in Buenos Aires, Argentina. The aim was to analyse the concept of disaster resilience by describing possible contemporary complications in both theory and practice related to resilience and risks of informal settlements in Buenos Aires. For this reason I have applied the theoretical concept of resilience used by United Nations International Strategy for Disaster Reduction (UNISDR). The research has b...

  11. [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. PMID:23096553

  12. Geomagnetic effects on cosmic ray propagation under different conditions for Buenos Aires and Marambio, Argentina

    CERN Document Server

    Masías-Meza, Jimmy J

    2014-01-01

    The geomagnetic field (Bgeo) sets a lower cutoff rigidity (Rc) to the entry of cosmic particles to Earth which depends on the geomagnetic activity. From numerical simulations of the trajectory of a proton using different models for Bgeo (performed with the MAGCOS code), we use backtracking to analyze particles arriving at the location of two nodes of the net LAGO (Large Aperture Gamma ray burst Observatory) that will be built in the near future: Buenos Aires and Marambio (Antarctica), Argentina. We determine the asymptotic trajectories and the values of Rc for different incidence directions, for each node. Simulations were done using several models for Bgeo that emulate different geomagnetic conditions. The presented results will help to make analysis of future observations of the flux of cosmic rays done at these two LAGO nodes.

  13. Atmospheric control of Aedes aegypti populations in Buenos Aires (Argentina) and its variability

    Science.gov (United States)

    de Garín, A.; Bejarán, R. A.; Carbajo, A. E.; de Casas, S. C.; Schweigmann, N. J.

    The mosquito Aedes aegypti is the main urban vector responsible for the transmission of dengue fever and dengue hemorrhagic fever. The city of Buenos Aires, Argentina, is located at the southern end of the world distribution of the species. The population abundance of Ae. aegypti is mainly regulated by environmental factors. We calculated the potential number of times that a female could lay eggs during its mean life expectancy, based on potential egg production and daily meteorological records. The model considers those variables implying physical hazard to the survival of Ae. aegypti, mosquito flying activity and oviposition. The results, obtained after calibration and validation of the model with field observations, show significant correlation (Pclimatic change) can be observed. The climatic variability in the last decade resembles conditions at the end of 19th century.

  14. HIV status disclosure among infected men who have sex with men (MSM) in Buenos Aires, Argentina.

    Science.gov (United States)

    Carballo-Diéguez, Alex; Balán, Iván C; Dolezal, Curtis; Ibitoye, Mobolaji; Pando, María A; Marone, Rubén; Barreda, Victoria; Avila, María Mercedes

    2013-12-01

    Five hundred men who have sex with men were recruited in Buenos Aires using respondent driven sampling. Of them, 46 respondents (24 of them not gay identified) who were HIV infected were asked questions on serodisclosure. The sample was characterized by indicators of low socioeconomic status. Most of the respondents reported being in good to excellent health despite 42% of them having been diagnosed with AIDS. Only 10% of respondents had not disclosed their serostatus to at least one person. Coworkers and lovers or main sexual partners were those most likely to know the respondents' serostatus. Reactions to disclosure were for the most part supportive. Those who had not disclosed anticipated less favorable reactions than those who had disclosed. No significant differences were observed between gay and non-gay identified respondents. The progressive social environment of Argentina that includes federal laws recognizing gay marriage may contribute to create a climate favorable for serostatus disclosure. PMID:24245593

  15. Surface and groundwater quality in the northeastern region of Buenos Aires Province, Argentina

    Science.gov (United States)

    Galindo, G.; Sainato, C.; Dapeña, C.; Fernández-Turiel, J. L.; Gimeno, D.; Pomposiello, M. C.; Panarello, H. O.

    2007-04-01

    This work studies the water quality of the Pergamino-Arrecifes River zone in the Rolling Pampa, northeast Buenos Aires Province, Argentina. Temperature, pH, specific conductivity, Na, K, Mg, Ca, SO42-, Cl -, HCO3-, NO3-, Si, Ag, Al, As, B, Ba, Be, Br, Cd, Co, Cr, Cu, Fe, Hg, Li, Mn, Mo, Ni, P, Pb, Se, Tl, U, V, Zn, and the environmental stable δ18O and δ2H isotope ratios were determined in 18 sampling stations. Natural and anthropogenic features influence surface and groundwater quality. Point pollution sources (septic wells and other domestic and farming effluents) increase the nitrate concentration. The values of pH, NO3-, Al, As, B, Fe, and Mn exceed the respective Argentine reference thresholds in different sampling stations for human drinking water; B, Mo, U, and V for irrigation; and V and Zn for cattle consumption.

  16. Atmospheric control of Aedes aegypti populations in Buenos Aires (Argentina) and its variability

    Science.gov (United States)

    de Garín, A.; Bejarán, R. A.; Carbajo, A. E.; de Casas, S. C.; Schweigmann, N. J.

    The mosquito Aedes aegypti is the main urban vector responsible for the transmission of dengue fever and dengue hemorrhagic fever. The city of Buenos Aires, Argentina, is located at the southern end of the world distribution of the species. The population abundance of Ae. aegypti is mainly regulated by environmental factors. We calculated the potential number of times that a female could lay eggs during its mean life expectancy, based on potential egg production and daily meteorological records. The model considers those variables implying physical hazard to the survival of Ae. aegypti, mosquito flying activity and oviposition. The results, obtained after calibration and validation of the model with field observations, show significant correlation (P<0.001) for different lags depending on the life stage. From these results, more favorable atmospheric conditions for Ae. aegypti reproduction (linked to the urban climatic change) can be observed. The climatic variability in the last decade resembles conditions at the end of 19th century.

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

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    Paula Ferrere

    2009-10-01

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

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

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    Lorena Rosso

    2014-04-01

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

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

    Institute of Scientific and Technical Information of China (English)

    Lorena Rosso; Daro Andrinolo; Daniela Sedan; Maria Kolman; Josep Caixach; Cintia Flores; Juan Manuel Oteiza; Graciela Salerno; Ricardo Echenique; Leda Giannuzzi

    2014-01-01

    Objective: To show the toxicological and phylogenetic characterization of a native Microcystisaeruginosa (M. aeruginosa) strain (named CAAT 2005-3) isolated from a water body of Buenos Aires province, Argentine.Methods: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:A M. aeruginosa strain was isolated from the drainage canal of the sewage treatment in 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]+=1037.8 m/z). The phylogenetic analysis showed that the sequence clustered with others M. aeruginosa 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.

  20. Hydatidosis cases in one of Mar del Plata City hospitals, Buenos Aires, Argentina Casos de hidatidose em um hospital da cidade de Mar del Plata, Buenos Aires, Argentina

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    Marcela Cecilia Dopchiz

    2007-12-01

    Full Text Available Hydatidosis is a zoonosis of worldwide distribution produced mainly by the metacestode Echinococcus granulosus. In Argentina, its distribution reaches endemic levels. The aims of this investigation were to contribute to the knowledge of hydatidosis in the southeast of Buenos Aires province, study its evolution at the Interzonal General Hospital for Acute Diseases between 1992 and 2002 and discuss its importance. Clinical records of operated and/or diagnosed patients were reviewed with regard to this disease. One hundred and twenty cases were analyzed. Among the patients, 56.7% were women. The average age was 42.2+16.8 years. 68.3% lived in urban areas. In 75% of the cases, ultrasonography was used. Hepatic location was most frequently seen. 89.2% received surgical treatment. Albendazole was used for 19 patients. The mean length of hospital stay was 16 days. We conclude that this zoonosis is a disease that generates high costs in medical care and for this reason more epidemiological studies should be carried out and public health authorities should implement control and prevention strategies in the region.A hidatidose é uma zoonose de distribuição mundial produzida principalmente pela meta-cestódeo Echinococcus granulosus. Na Argentina, a distribuição alcança níveis endêmicos. O objetivo desta pesquisa foi contribuir ao conhecimento da hidatidose no sudeste da província de Buenos Aires, estudar sua evolução no Hospital Geral Interzonal para Doenças Infecciosas Agudas, entre 1992 e 2002 e discutir sua importância. Os registros clínicos dos pacientes operados e/ou diagnosticados foram revisados quanto a esta doença. Cento e vinte casos foram analisados. Entre os pacientes, 56,7% eram mulheres. A idade média foi de 42,2+16,8 anos. Um grupo de 68,3% eram residentes urbanos. Em 75% dos casos, foi utilizada a ultrassonografia. Observou-se mais freqüentemente a localização hepática. Um grupo de 89,2% foi submetido a tratamento cir

  1. Conservación del ombusillo, planta amenazada de la Provincia de Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Marcelo Paulo Hernández

    2009-10-01

    Full Text Available Conserving ombusillo, an endangered plant from the province of Buenos Aires, Argentina Resumen: Phytolacca tetramera Hauman “ombusillo”, es una especie vegetal endémica del SE de la Provincia de Buenos Aires, Argentina, que se halla en peligro crítico de extinción. Su principal factor de amenaza es la reducción del hábitat por acción antrópica. Esta especie presenta principios activos fungicidas y, posiblemente, dada su afinidad con otras especies del mismo género, presente compuestos antivirales, antitumorales, bactericidas e insecticidas. Se realizaron ensayos de macropropagación con distintas concentraciones de reguladores de crecimiento de tipo auxínicos que muestran claramente un enraizamiento óptimo correspondiente a segmentos de ejes aéreos vegetales “estacas” sometidas a 300 ppm de ácido indol butírico y a segmentos de tallos subterráneos sin aplicación de hormonas. Así mismo, se realizaron ensayos de germinación, en condiciones de luz y de oscuridad, comprobándose que las semillas presentan fotoblastismo positivo con un porcentaje de germinación del 65%, el cual disminuye enormemente luego del año de cosecha.Palabras clave: Phytolacca tetramera; endémica; maropropagación; germinación. Abstract:  Phytolacca tetramera Hauman “ombusillo” is an endemic plant species which is in critical danger of becoming extinct; it comes from the south-east of the province of Buenos Aires. The main factor threatening this species is the reduction of its natural environment by antropic action.This species has antifungal properties and, due to its relationship with other species from the same genus, it could also have antiviral, antitumour, antibacterial and insecticidal compounds. Macropropagation experiments were carried out using different concentrations of auxinic growth regulators. Segements of aerial axis “stakes” treated with 300 ppm of indol-butiric acid and segments of

  2. 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.

  3. Closing Remarks (by A. Gonzalez) [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)

    The 12th International Congress of the International Radiation Protection Association (IRPA12) has reconfirmed the strong scientific basis on which radiation protection is founded. On one hand, physical sciences characterizing radiation exposure have reached a high level of sophistication. On the other hand, the biological sciences that estimate radiation health effects have undergone a great deal of development in the last years, reaching a level of insight that was unimaginable just a few years ago. Significant advances in the description and quantification of ionizing radiation, as well as a better understanding of radiation exposure effects were presented at the Congress. They have transformed our related knowledge from implicit simplicity to intricate complexity. The final outcome of an exposure situation will probably continue to be simply described by a bare nominal radiation risk coefficient, expressed as probability per unit of effective dose incurred, but the biological mechanisms leading to health effects from radiation have proven to be extremely sophisticated and complex. IRPA12 has shown that radiobiology has come far from the simple target model for radiation effects, which was the preferred paradigm for expressing radiation induced harm as recently as the IRPA10 Congress just a decade ago. Plenty of papers were submitted to the Congress describing complex mechanisms for the interaction of radiation with living matter. Bystander effects, genomic instability, adaptive responses, abscopal effects, and clastogenic plasma factors are among the great variety of recently discovered cell and tissue response mechanisms that were discussed at the Congress. A new understanding of radiation effects is emerging which describes how complex the outcome of radiation interaction with cell structure is. IRPA12 has shown how much is known about this complicated phenomenon, perhaps much more than is known about the interaction of other pollutants with cells; but the

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

    OpenAIRE

    Claudia Dido; Franco Mieres; Gustavo Rinaldi; Patricia Benedetti; Horacio Campaña

    2013-01-01

    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...

  5. Estrategias habitacionales de familias de sectores populares y medios residentes en el área metropolitana de Buenos Aires (Argentina)

    OpenAIRE

    María Mercedes di Virgilio; María Laura Gil y de Anso

    2012-01-01

    This article analyzes the various ways in which families face difficult habitat access conditions in the post-Fordist city. In order to do this, we have comparatively explored the housing strategies implemented by popular and middle class families residing in the Buenos Aires metropolitan area (Argentina). We have chosen popular and middle class families as a response to our interest in analyzing the effects that position in the class structure has on the actions carried out by families for t...

  6. Incidence and prevalence of lupus in Buenos Aires, Argentina: a 11-year health management organisation-based study

    OpenAIRE

    Scolnik, M; Marin, J.; Valeiras, S M; Marchese, M F; Talani, A S; Avellaneda, N L; Etchepare, A; Etchepare, P; Plou, M S; Soriano, E. R.

    2014-01-01

    Objectives Studies regarding the epidemiology of systemic lupus erythematosus (SLE) are lacking in Argentina. Our purpose was to estimate the incidence and prevalence of SLE in a university hospital-based health management organisation in Buenos Aires (HIMCP). Methods For incidence calculation, the population at risk included all adult members of the HIMCP, with continuous affiliation for at least 1 year from January 1998 to January 2009. Each person was followed until he/she voluntarily left...

  7. [Young killers: study of distinctive features with youth that have committed other crimes in the province of Buenos Aires, Argentina].

    Science.gov (United States)

    Wiese, Renata; Folino, Jorge O

    2009-01-01

    The violence in its different forms, is a social problem that calls for multidisciplinary approaches in actions aimed at prevention. Among the skills needed to guide preventive policies, the highlights are risk and protective factors for violent behavior. This study aims to contribute, from the psychiatric perspective, in exploring factors influencing the behavior of homicidal adolescents. We studied a group of cases (n = 15) of young killers and a control group (n = 35) of juveniles who committed other crimes (simple or qualified theft or rape), all of them institutionalized by court order in La Plata city, Buenos Aires, Argentina. In both groups were evaluated sociodemographic, criminological and psychosocial characteristics through ad hoc questionnaire, as well as psychiatric clinical variables through the MINI (Mini International Neuropsychiatric Interview). The results showed that the multiple factors studied were not significantly associated with the condition of being young murderer. The findings aim to sustain that, in this vulnerable population of youth, homicidal behavior depends more on the circumstances than of personal peculiarities. The authors suggest that preventive actions in adolescents with these risk factors could have an effect on criminal behavior in general, as in homicidal behavior in particular. PMID:19434297

  8. Coleopterans Associated with Plants that form Phytotelmata in Subtropical and Temperate Argentina, South America

    OpenAIRE

    Campos, Raúl E.; Liliana A. Fernández

    2011-01-01

    A list of the most common plants that form phytotelmata and their associated coleopterans (aquatic, semi-aquatic and terrestrial) from the northeastern subtropical and temperate area of Argentina, South America with biological and behavioral observations is presented in this study. Species of Poaceae (n = 3), Bromeliaceae (5), Apiaceae (6), Araceae (2), Urticaceae (1), Marantaceae (1), Arecaceae (1), Dipsacaceae (1) and Cyperaceae (1) were identified as phytotelmata. Aquatic species of Scirti...

  9. 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.

  10. Ecotoxicological and Genotoxic Evaluation of Buenos Aires City (Argentina Hospital Wastewater

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    Anahí Magdaleno

    2014-01-01

    Full Text Available Hospital wastewater (HWW constitutes a potential risk to the ecosystems and human health due to the presence of toxic and genotoxic chemical compounds. In the present work we investigated toxicity and genotoxicity of wastewaters from the public hospital of Buenos Aires (Argentina. The effluent from the sewage treatment plant (STP serving around 10 million inhabitants was also evaluated. The study was carried out between April and September 2012. Toxicity and genotoxicity assessment was performed using the green algae Pseudokirchneriella subcapitata and the Allium cepa test, respectively. Toxicity assay showed that 55% of the samples were toxic to the algae (%I of growth between 23.9 and 54.8. The A. cepa test showed that 40% of the samples were genotoxic. The analysis of chromosome aberrations (CA and micronucleus (MN showed no significant differences between days and significant differences between months. The sample from the STP was not genotoxic to A. cepa but toxic to the algae (%I = 41%, showing that sewage treatment was not totally effective. This study highlights the need for environmental control programs and the establishment of advanced and effective effluent treatment plants in the hospitals, which are merely dumping the wastewaters in the municipal sewerage system.

  11. Ecotoxicological and genotoxic evaluation of Buenos Aires city (Argentina) hospital wastewater.

    Science.gov (United States)

    Magdaleno, Anahí; Juárez, Angela Beatriz; Dragani, Valeria; Saenz, Magalí Elizabeth; Paz, Marta; Moretton, Juan

    2014-01-01

    Hospital wastewater (HWW) constitutes a potential risk to the ecosystems and human health due to the presence of toxic and genotoxic chemical compounds. In the present work we investigated toxicity and genotoxicity of wastewaters from the public hospital of Buenos Aires (Argentina). The effluent from the sewage treatment plant (STP) serving around 10 million inhabitants was also evaluated. The study was carried out between April and September 2012. Toxicity and genotoxicity assessment was performed using the green algae Pseudokirchneriella subcapitata and the Allium cepa test, respectively. Toxicity assay showed that 55% of the samples were toxic to the algae (%I of growth between 23.9 and 54.8). The A. cepa test showed that 40% of the samples were genotoxic. The analysis of chromosome aberrations (CA) and micronucleus (MN) showed no significant differences between days and significant differences between months. The sample from the STP was not genotoxic to A. cepa but toxic to the algae (%I = 41%), showing that sewage treatment was not totally effective. This study highlights the need for environmental control programs and the establishment of advanced and effective effluent treatment plants in the hospitals, which are merely dumping the wastewaters in the municipal sewerage system. PMID:25214834

  12. Social determinants of nonadherence to tuberculosis treatment in Buenos Aires, Argentina

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    Maria Belen Herrero

    2015-09-01

    Full Text Available This study aimed to identify the individual and environmental determinants of nonadherence to tuberculosis (TB treatment in selected districts in the Buenos Aires Metropolitan Area, in Argentina. We conducted a cross-sectional study using a hierarchical model. Using primary and secondary data, logistic regression was performed to analyze two types of determinants. The likelihood of nonadherence to treatment was greatest among male patients. The following factors led to a greater likelihood of nonadherence to treatment: patients living in a home without running water; head of household without medical insurance; need to use more than one means of transport to reach the health center; place of residence in an area with a high proportion of households connected to the natural gas network; place of residence in an area where a large proportion of families fall below the minimum threshold of subsistence capacity; place of residence in an area where a high proportion of households do not have flushing toilets and basic sanitation. Our results show that social and economic factors – related to both individual and environmental characteristics – influence adherence to TB treatment.

  13. Historia reciente: XII Congreso Internacional del Cáncer, Buenos Aires, Argentina, 1978

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    Hugo Spinelli

    2014-01-01

    Full Text Available Desde los enfoques de la historia del tiempo presente, este artículo recupera la discusión en torno al XII Congreso Internacional del Cáncer realizado en Buenos Aires en 1978, que provocó la realización en París de un “contracongreso” por iniciativa de Georges Périès. Para ello se describe el escenario político de la época, la situación de los derechos humanos en Argentina, el rol de los medios de comunicación, en especial los periódicos La Nación y Clarín y la revista Gente, y la posición institucional adoptada por la Academia Nacional de Medicina, plasmada en una carta enviada a los presiden- tes de las principales sociedades científicas del mundo, que se reproduce como fuente documental, tomada del libro Memoria: Año 1978 (Presidencia de Dr. José E. Rivarola. El marco de la discusión remite a la política social de la ciencia versus su presunta neu- tralidad y el rol de las sociedades científicas.

  14. Infection levels of the cestode Hymenolepis diminuta in rat populations from Buenos Aires, Argentina.

    Science.gov (United States)

    Hancke, D; Suárez, O V

    2016-03-01

    Ecological studies on zoonotic parasites are crucial for the design and implementation of effective measures to prevent parasite transmission. The aim of this study was to evaluate factors such as season, landscape unit, rat sex and rat body length, affecting the abundance of the cestode Hymenolepis diminuta, a parasite of synanthropic rats, within an urban environment. A parasitological survey was undertaken on 169 rats from landscape units such as shantytowns, parklands, industrial-residential areas and scrap-metal yards in Buenos Aires, Argentina. The overall prevalence of H. diminuta was 21.3%, although the occurrence of this species in rats was not homogeneous. The abundance of H. diminuta, using a zero-inflated negative binomial model, was correlated with rat body length. In shantytowns, abundance levels were higher than other landscape units, largely due to differences in individual environmental characteristics and rat assemblages. The populations of arthropod intermediate hosts could be subjected to seasonal fluctuations and the degree of urbanization. Shantytowns are overcrowded urban marginal settlements with most inhabitants living in precarious conditions and supporting large populations of rats, thereby increasing the risk of zoonotic infection. PMID:25869333

  15. [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. PMID:24823605

  16. Urban Chagas disease in children and women in primary care centres in Buenos Aires, Argentina

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    Guillermo Moscatelli

    2015-08-01

    Full Text Available The primary objective of this study was to estimate the prevalence of this disease in women of childbearing age and children treated at health centres in underserviced areas of the city of Buenos Aires. Demographic and Chagas disease status data were collected. Samples for Chagas disease serology were obtained on filter paper and the reactive results were confirmed with conventional samples. A total of 1,786 subjects were screened and 73 positive screening results were obtained: 17 were from children and 56 were from women. The Trypanosoma cruziinfection risk was greater in those individuals who had relatives with Chagas disease, who remember seeing kissing bugs, who were of Bolivian nationality or were born in the Argentine province of Santiago del Estero. The overall prevalence of Chagas disease was 4.08%. Due to migration, Chagas disease is currently predominantly urban. The observed prevalence requires health programme activities that are aimed at urban children and their mothers. Most children were infected congenitally, which reinforces the need for Chagas disease screening of all pregnant women and their babies in Argentina. The active search for new cases is important because the appropriate treatment in children has a high cure rate.

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

    International Nuclear Information System (INIS)

    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 km2 will be covered by a sampling network, using in situ growing lichens. The distribution maps for the two selected species are already drawn and sampling of local soils will also be conducted. Current efforts at the Neutron Activation Analysis laboratory are put on assessing, for the selected lichen species, the influence of sample preparation methods on trace element concentrations. The use of other analytical techniques will allow the evaluation of the bioindicator chemical response and its relationship to different atmospheric quality levels. Source identification and apportionment will be done by statistical fingerprinting of the elemental concentrations, as sources of pollution are characterized by being composed of different mixtures of elements in different proportions. In this way and as a long-term objective, regional maps will be drawn showing the

  18. 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

    Directory of Open Access Journals (Sweden)

    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

  19. Potencial uso agrícola del agua de la laguna Unamuno. Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    V. Bohn

    2007-01-01

    Full Text Available La laguna Unamuno se localiza en el sudoeste de la provincia de Buenos Aires (Argentina y pertenece a la cuenca del arroyo Napostá Chico. Su origen se relaciona con la topografía y con el incremento de las precipitaciones promedio de la región durante las últimas décadas. Debido a que no existen experiencias de riego con agua de la laguna, el objetivo de este trabajo es determinar su aptitud para riego y el riesgo de sodificación del suelo de la cubeta de inundación. El grado de dicho riesgo es un aporte al conocimiento del estado actual de los suelos de la cubeta de inundación y es un parámetro a tener en cuenta en futuros planes de manejo para el uso de la laguna en suelos aledaños. Los parámetros físicos y químicos del agua se obtuvieron a partir del análisis de muestras correspondientes al período abril/04-junio/05. Se aplicó el índice de absorción de sodio y el de carbonato sódico residual. Se determinó que existe un alto riesgo de sodificación de los suelos que están en contacto con el agua de la laguna. Sin embargo, la permanencia de los mismos y la variación areal de la laguna contrarrestaron los efectos de la permanencia de agua con alto contenido de sodio(Na, cloro y sulfatos sobre tierras productivas.

  20. Caracteres anatómicos de la vegetación costera del Río Salado (Noroeste de la provincia de Buenos Aires, Argentina) Anatomic features of Salado river coastal vegetation (Northwest of Buenos Aires Province, Argentina)

    OpenAIRE

    Nancy Mariel Apóstolo

    2005-01-01

    Veintiún especies (doce Dicotyledoneae y nueve Monocotyledoneae) pertenecientes a la vegetación costera del río Salado (noroeste de la provincia de Buenos Aires, Argentina) fueron estudiadas con el fin de determinar las características anatómicas relacionadas a estrategias adaptativas al medio. Dichas especies pertenecen a los humedales de la cuenca del Salado y, por lo tanto, están afectadas por inundación, sequía temporaria y alta salinidad en agua y suelo. Caracteres anatómicos típicos de ...

  1. China International Friendship Cities Association Delegation Visits Brazil and Argentina

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>Invited by the UNALE (National Union of Legislative Assemblies of Federated States of Brazil) and the State Legislative Assembly of Santa Catarina, the CPAFFC sent a delegation from the China International Friendship Cities Association (CIFCA) to attend the 15th National Conference of State Legislative Assemblies and the Meeting of Chinese and Brazilian Local Governments in Florianopolis, the state capital from May 16 to 21.

  2. 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

    Directory of Open Access Journals (Sweden)

    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

  3. 21Pb dating of sediments in a heavily contaminated drainage channel to the La Plata estuary in Buenos Aires, Argentina

    International Nuclear Information System (INIS)

    Concentrations of 21Pb and 137Cs 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 21Pb 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 137Cs measurements demonstrate that cesium dating is not adequate in regions of the southern hemisphere

  4. Mites (Acari: Laelapidae associated with sigmodontinae rodents in Entre Ríos Province, Argentina

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    Abba Agustín M

    2001-01-01

    Full Text Available The richness, diversity, abundance and prevalence of mite species associated with sigmodontine rodents of different species in Entre Ríos province, Argentina are studied. Five of the six species of mites were reported for the first time in the study area. The richness and diversity of mites was higher on Oligoryzomys flavescens and O. delticola than on Akodon azarae. Androlaelaps rotundus was dominant and exhibited higher values of mean abundance and prevalence on A. azarae, Mysolaelaps microspinosus on O. flavescens and Gigantolaelaps mattogrossensis on O. delticola.

  5. Increased monooxygenase activity associated with resistance to permethrin in Pediculus humanus capitis (Anoplura: Pediculidae) from Argentina.

    Science.gov (United States)

    González Audino, P; Barrios, S; Vassena, C; Mougabure Cueto, G; Zerba, E; Picollo, M I

    2005-05-01

    We studied the profile of permethrin resistance in populations of head lice infesting children 6-12 yr old in schools and their homes in and around Buenos Aires, Argentina. Five permethrin-resistant populations with different levels of resistance were collected: Hogar Loyola (HL), Republica de Turquia (RT), Hogar Mitre (HM), Guardia de Honor (GH), and Ricardo Guiraldes (RG). One susceptible population, Bandera Argentina (BA), also was collected. Their level of resistance was evaluated, and results showed resistance ratios of 13 for HL, 16 for RT, 22 for HM, 61 for GH, and 69 for RG. To elucidate the possible involvement of the cytochrome P450 monooxygenase system in conferring permethrin resistance, ethoxycoumarin-O-deethylase (ECOD) activity was measured in abdomens of individual third instars and adults by using a fluorometric assay. The ECOD activity was lower in the susceptible BA population (4.7 ng per louse) than in the resistant ones (13.7 ng per louse for RG, 12.3 ng per louse for GH, 8.6 ng per louse for RT, and 8.2 ng per louse for HL). ECOD activity was significantly correlated with the level of resistance in the field populations (r = 0.97, P = 0.0009), suggesting a role for cytochrome monooxygenase P450 system in permethrin resistance by head louse, Pediculus humanus capitis De Geer. PMID:15962785

  6. 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

    OpenAIRE

    Darío Vezzani; Stella Maris Velázquez; Nicolás Schweigmann

    2004-01-01

    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 s...

  7. Cyanophyceae Epipélicas de la Marisma "El Cangrejal" en el estuario de Bahía Blanca (Buenos Aires, Argentina Epipelic Cyanophyceae of the salt marsh «El Cangrejal» in the estuary of Bahía Blanca (Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Constanza Da Rodda

    2005-12-01

    Full Text Available En la marisma de las planicies de marea limo-arcillosas del estuario de Bahía Blanca (Buenos Aires se ubica "El cangrejal", una asociación de Sarcocornia perennis y Chasmagnathus granulata. En la interfase sedimento-agua se forman matas microbianas constituidas principalmente por cianofíceas y diatomeas. Se estudiaron las Cyanophyceae epipélicas presentes en dichas matas, identificándose veintitres taxa correspondientes a los Órdenes Chroococcales (1 y Hormogonales (22. Las especies halladas son nuevas citas para el área en estudio, a excepción de Microcoleus chthonoplastes y Oscillatoria limosa. Symploca hydnoides f. minor se cita por primera vez para Argentina.«El Cangrejal», an association of Sarcocornia perennis and Chasmagnathus granulata is situated in the salt marsh of slime-clay tide plains of the estuary of Bahía Blanca (Buenos Aires. In the sediment-water interface microbial mats are mainly constituted by cyanophytes and diatoms. This is a study of the epipelics Cyanophyceae presents in these mats, identifying twenty three taxa corresponding to the Orders Chroococcales (1 and Hormogonales (22. The species are new mention for the study area, an exception are Microcoleus chthonoplastes and Oscillatoria limosa. Symploca hydnoides f. minor is a new record for Argentina.

  8. "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. PMID:18573753

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

    Directory of Open Access Journals (Sweden)

    Darío Vezzani

    2004-10-01

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

  10. 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.

  11. "Quien Sabe Mas Lucha Mejor": Adult Educators' Care of the Self Practices within Social Movements in Buenos Aires, Argentina

    Science.gov (United States)

    O'Donnell, Jennifer Lee

    2014-01-01

    This article looks at popular adult educators' care of the self practices within social movements in Buenos Aires, Argentina. It answers the following questions: How is popular adult education practiced amongst educators in social movements? What can studying popular adult educators' care of the self practices offer the field of adult…

  12. Ecology and conservation of large coastal sharks from Anegada Bay, Buenos Aires province, Argentina.

    OpenAIRE

    Lucifora, L.O.

    2003-01-01

    Reproduction, age, growth, feeding habits and population dynamics of four large temperate sharks (sand tiger shark Carcharias taurus, school shark Galeorhinus galeus, copper shark Carcharhinus brachyurus, and broadnose sevengill shark Notorynchus cepedianus) were studied in Anegada Bay (between 39°50' and 40°40'S), Argentina. Data were gathered from 1089 individuals examined during a three-year study period. Age and growth were studied through examination of vertebral centra only in the first...

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

    OpenAIRE

    Claudia Irene Menghi; Claudia Liliana Gatta

    2011-01-01

    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...

  14. 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

  15. Late Quaternary marginal marine deposits and palaeoenvironments from northeastern Buenos Aires Province, Argentina: A review

    Science.gov (United States)

    Aguirre, M. L.; Whatley, R. C.

    The late Quaternary marginal marine deposits along eastern Argentina (Southwestern Atlantic) are reviewed according to our present knowledge. In the northeastern coastal area of Buenos Aires Province they have been assigned to a series of transgressions and regressions ranging from the late Pliocene to the late Quaternary. The most widely accepted model is Frenguelli's (1957) classical chronostratigraphical scheme of: 'Belgranense', late Pleistocene marine sediments at 3-6 m above m.s.l. and ca. 26,000->35,000 14C years BP, the 'Querandinense', Pleistocene-Holocene estuarine sediments below or at present m.s.l., and the most extensive 'Platense', mid-Holocene marine deposits at 4.5-2 m above m.s.l. dated at ca. 8000-1340 14C years BP. The restricted 'Belgranense' deposits, recorded in Samborombon Bay, in Magdalena at ca. 32,000 BP, near Mar Chiquita at ca. 24,900 and 30,500 BP and southwards in Bahía Blanca at ca. 26,000-35,500 BP, may belong to an interstadial (González et al., 1986). The molluscan composition suggests a marine invasion of the area but not a typical interglacial cycle characterized by euhaline and warm water elements. However, the oxygen isotope record argues against an interstadial during the interval 34-27 ka and the chronological control for these deposits is very poor, suggesting that they most probably have been elevated neotectonically. The Pleistocene-Holocene 'Querandinense' deposits, extensively distributed along the Bonaerensian coastal plain and continental shelf (ca. 11,000 14C years BP), with very low faunal diversity, abundance of freshwater ostracods and absence of the warm water molluscs characteristic of the Holocene ridges, indicate low salinity and cool water conditions. Further dating and isotope analysis of these deposits are required for a better understanding of the chronology of climatic events by the end of the Pleistocene in this area and to establish whether or not they could correspond to the Younger Dryas event of

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

    Directory of Open Access Journals (Sweden)

    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.

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

    Science.gov (United States)

    de Roodt, Adolfo Rafael

    2014-04-01

    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. PMID:24759176

  18. 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

    OpenAIRE

    Eduardo M Fernández; Ricardo A Ferriz; Cristina A Bentos; Guillermo R. López

    2012-01-01

    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 consumid...

  19. Transmitted drug resistance in women with intrapartum HIV-1 diagnosis: a pilot epidemiological survey in Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Diego Cecchini

    2014-11-01

    Full Text Available Introduction: Surveillance of primary resistance to antiretroviral drugs is particularly important in pregnant population, in which infection by drug-resistant HIV has not only implications for maternal treatment, but could also jeopardize the efficacy of neonatal prophylaxis. We aim to describe the prevalence of resistance associated mutations (RAMs in pregnant women with intrapartum HIV diagnosis in a public hospital of Buenos Aires, Argentina. Materials and Methods: Prospective pilot study (period from 2008 to October 2013. Plasma samples were tested for viral load by Versant HIV-1 RNA 3.0 (bDNA and sequenced using HIV-1 TRUGENE™Genotyping Kit (Siemens. The prevalence of RAMs was analyzed according to World Health Organization (WHO criteria. Results: Of 231 HIV-infected pregnant women assisted, 6% (n=14 had intrapartum diagnosis of HIV infection. 12 patients (85.7% had previous pregnancies, 10 (71.4% had inadequate prenatal care and 3 (23.1% seroconverted during pregnancy. Maternal characteristics (expressed medians and ranges were: age 25.5 (16–35 years; gestational age at birth: 39 (30–42 weeks; CD4 count: 500 (132–925 cells/µL; viral load: 9418 (1800–55299 copies/mL. No one had hepatitis B virus (HBV or hepatitis C virus (HCV coinfection; four (33.3% had syphilis. Eight patients (57.1% had vaginal delivery and six emergency C-section (42.9%. In six cases (46.2%, membrane rupture was spontaneous; four patients (28.6% failed to receive intrapartum zidovudine (ZDV infusion. In 12 patients a genotypic resistance test was performed: two (16.7% had WHO RAMs corresponding to K103N mutation in both cases, conferring high-level resistance to nevirapine (NVP and efavirenz. Two newborns (14.3% were preterm. All received neonatal prophylaxis: ZDV in 1 case and combined prophylaxis (ZDV/3TC/NVP in the remaining 13 (92.9%. All newborns were formula-fed. Two (14.3% had congenital syphilis, one of whom died. One newborn was HIV

  20. The Federal Law of Education in Argentina: Its Application in the Province of Buenos Aires La Ley Federal de Educación en la Argentina:Su Aplicación en la Provincia de Buenos Aires

    Directory of Open Access Journals (Sweden)

    María Fernanda Arias

    2005-01-01

    Full Text Available The present work seeks to analyze the results of the educational reform of the secondary school system in Argentina initiated by the Ley Federal de Educación in 1993. This article has chosen Greater Buenos Aires, the biggest conurbation in the country, as a "case study." The methodology used is based on quantitative and qualitative surveys administered to the top authorities of state and private schools in the area. We conclude that the reactions toward the reform are, in general, negative. Furthermore, there are no differences in attitudes between private and state schools. Both of them agree that the worst effect is the leveling down of the quality of education. In other words, the main cause of disagreement is mostly pedagogic. En el marco de la "reforma educativa" de la enseñanza media impuesta en la Argentina a partir de la Ley Federal de Educación (1993, se intenta describir los efectos que tuvo esta reforma en el ámbito del conurbano porteño de la provincia de Buenos Aires. Por esta razón, se utilizaron encuestas cuantitativas y cualitativas realizadas a las autoridades de establecimientos educativos públicos y privados del nivel medio, actualmente, Polimodal. En términos generales, la reacción frente a la transformación del sistema educativo en el ámbito analizado se percibe negativa. Además, en las respuestas dadas por las autoridades encuestadas, no se advierten diferencias notables. En todas se subraya la transformación en detrimento de la calidad educativa, lo que lleva a concluir que las razones del rechazo general obedecen principalmente a fundamentaciones de tipo pedagógicas.

  1. Host plant selection of two Mansonia blanchard species (Diptera: Culicidae) in a heterogeneous habitat of Buenos Aires City, Argentina.

    Science.gov (United States)

    Mulieri, Pablo R; Torretta, Juan P; Schweigmann, Nicolás

    2005-12-01

    Larvae and pupae of the genus Mansonia Blanchard attach to the roots of aquatic plants by means of modified structures to obtain oxygen. A study of the association of larval Ma. indubitans and Ma. titillans with floating macrophytes was conducted at Macies Pond, Argentina. Fifty-four sampling units were taken from January to May 2003. Three genera of host plants were considered: Pistia, Limnobium, and Salvinia. A total of 402 immatures of Ma. indubitans and 217 of Ma. titillans were captured and associations between Mansonia immatures and roots of each genera were assesed. Significant association was noted between Ma. indubitans and certain host plant species (K-W H=42.74, df=2, pstratiotes in significantly higher proportions than expected by random selection. Both species showed significant negative association with Salvinia spp., while no clear relationships were detected with L. laevigatum. PMID:16599153

  2. 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

  3. Impact to groundwater resources by landfill foundry industries waste in Tandil, Buenos Aires, Argentina. A preliminary study

    International Nuclear Information System (INIS)

    In Tandil city, in Buenos Aires province, Argentina, the foundry industry is one of the most important production lines. The waste generated by these industries has historically been disposed as fill material in pit quarries and brick works of the likelihood that some of his constituents leach contacting the underground water resources. The aim of this paper is to present the preliminaries results hydrochemical and hydrodynamic study conducted in a landfill of waste foundry industries. The work is around developing a disposal site with the measurement of groundwater levels and taking water samples along an annual hydrological cycle (November 2007 - November 2008). The hydrodynamic analysis shows that the groundwater flow is from the west from a rocky area where high variance across the study area. Hydrochemistry in relation to concentrations of nitrate and electrical conductivity vary significantly upstream and downstream of the landfill. (Author) 9 refs.

  4. 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

  5. Nuevos registros de Hippidion (Mammalia, Perissodactyla en el Pleistoceno tardío de la provincia de Buenos Aires, Argentina

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    Prado, José Luis

    2013-12-01

    Full Text Available This study describes two new skulls referred to Hippidion principale (Lund and vaRíous elements of the appendicular skeleton referred to H. devillei from two classic localities from Buenos Aires province: the Salado and Quequén Grande Rivers. For taxonomic identification of the appendicular remains was performed a multivariate analysis that included the metacarpals and phalanges described and several remains recorded in various locations in Argentina and Brazil. For the determination of the skulls was made a comparative study with other skulls from different localities. These data increasing the record of Hippidion in South America and provide new evidence about the chronological distribution of two species of Hippidion. One radiometric data was obtained by the method of AMS dating to the skull from Salado River (MHM-P54 about a 14C age 14120 ± 50 BP. In general, bearing sediments at both localities are referable to the Lujanian Age and the Biozone of Equus (Amerhippus neogeus.En este estudio se describen dos nuevos cráneos referidos a Hippidion principale (Lund y varios elementos del esqueleto apendicular referidos a H. devillei procedentes de dos localidades clásicas de la provincia de Buenos Aires, las márgenes de los ríos Salado y Quequén Grande. Para la identificación taxonómica de los restos apendiculares, se realizó un análisis multivariante en el que se incluyeron los metacarpianos y falanges descritos y los registrados en varias localidades de Argentina y Brasil. Para la determinación de los cráneos se realizó un estudio comparativo con otros cráneos de diversas localidades. Estos hallazgos incrementan el registro de Hippidion en América del Sur y aportan nuevas evidencias sobre la cronología de sus especies en Argentina. Se realizó una datación por AMS para el ejemplar de Río Salado (MHM-P54 que ha suministrado una edad 14C 14120 ± 50 BP. En general, los sedimentos portadores en ambas localidades son referibles a

  6. 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

  7. Association between BoLA-DRB3 and somatic cell count in Holstein cattle from Argentina.

    Science.gov (United States)

    Baltian, L R; Ripoli, M V; Sanfilippo, S; Takeshima, S N; Aida, Y; Giovambattista, G

    2012-07-01

    Different studies have proved that the resistance/susceptibility to mastitis is genetically determined. The major histocompatibility complex in cows is known as bovine lymphocyte antigen (BoLA). Genes from the BoLA have been associated with the occurrence of infectious diseases such as mastitis and leukosis, especially the BoLA-DRB gene. The object of the present study was to detect associations between BoLA-DRB3 alleles and somatic cell count (SCC), as an indicator of resistance/susceptibility to mastitis in Holstein cattle (N = 123) from La Pampa, Argentina. Fisher's exact test and Woolf-Haldane odds ratio were applied to study the association between SCC and BoLA-DRB3 allele frequencies. Significant association was noted between BoLA-DRB3.2*23 and *27 alleles (p < 0.05) and protective or susceptibility effects, respectively. In addition, alleles BoLA-DRB3.2*20 and *25 exhibit suggestive association with high SCC (p < 0.1). These results were partially in agreement with data reported from Japanese Holstein cattle, but differed from those published by other authors. A possible explanation for the contrasting results could be that the mastitis is a multifactor disease caused by different pathogens. Moreover, most of the studies were carried out using PCR-RFLP method, which has less resolution than PCR-SBT because PCR-RFLP defined alleles included more than one sequenced alleles. PMID:22531932

  8. 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.

  9. Las estructuras de la investigación en Argentina (universidades, entes, asociaciones, fundaciones An Overview of Research Infrastructure for Medieval Studies in Argentina (Associations, Institutes, and Universities

    Directory of Open Access Journals (Sweden)

    Esteban Noce

    2012-10-01

    Full Text Available El siguiente trabajo tiene como objetivo presentar un cuadro descriptivo respecto de la situación actual de los estudios sobre la Edad Media en la Argentina. A tal fin, se hará inicialmente referencia a los diversos institutos universitarios, entes públicos, asociaciones y fundaciones que, desde una u otra área de las Ciencias Humanas, realizan su contribución al análisis del Medioevo. Especial atención merecerán las actividades y publicaciones desarrolladas por cada uno de ellos. Tras esto, se aludirá a algunas de las dificultades que supone para el ejercicio de la investigación la posición geográfica y académica correspondiente a nuestro país.The work aims to present an outline of the current situation regarding studies on the Middle Ages in Argentina. To this end, reference is made initially to the various academic institutes, public institutions, associations and foundations, in the different areas of the Human Sciences, that give a contribution to the analysis of the Middle Ages; it pays special attention to the activities and publications developed by each of them. After this, the paper connect some of the difficulties for the exercise of research to the academic and geographical position of the country.

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

    International Nuclear Information System (INIS)

    The Sistema de las Encadenadas de Chascomus (35o30'S-35o34'S; 58o17'W-58o44'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 oC 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 km2), Chascomus (30 km2), Manantiales and Adela (21 km2), El Burro (10,7 km2),Chis Chis (14.8 km2), Las Tablillas (16,7 km2) and Las Barrancas (8,85 km2). 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, mainly humic substances

  11. Impact of wildfire smoke in Buenos Aires, Argentina, on ocular surface

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    Martin Berra

    2015-04-01

    Full Text Available Purpose: To evaluate the acute impact of the wildfire smoke episode in 2008 on the ocular surface of subjects living in the Metropolitan Area of Buenos Aires (MABA. Methods: A total of 86 subjects were evaluated: Group 1 comprised patients from a public ophthalmology hospital (N=35 and Group 2 comprised healthy volunteers (N=51. All subjects answered a questionnaire on ocular symptoms and underwent ophthalmologic examination [bulbar conjunctival hyperemia, corneal fluorescein staining, rose bengal vital staining, tear break-up time (TBUT, Schirmer I test, tear lysozyme, and impression cytology] during and after the acute episode. Concentrations of carbon monoxide (CO, nitrogen dioxide (NO2, and particulate matter (PM were measured before, during, and after the acute episode. Results: Both groups showed a statically significant increase in ocular symptoms and bulbar conjunctival hyperemia and a statically significant decrease in tear break-up time during the acute episode. Group 1 showed more severe symptoms and a statistically significant increase in fluorescein and rose bengal staining intensities during the acute episode. We found a significant negative correlation between ocular symptoms and tear break-up time. During the episode, the levels of CO, NO2, and particulate matter in MABA were four times higher than the usual average levels for the same period in 2007 and 2009. Conclusions: Increased air pollution from the burning of biomass is associated with a decrease in the stability of the tear film (TBUT, generating areas of ocular surface exposure that may be the cause of the increased feeling of irritation. Group 1 was more affected by not having a healthy ocular surface, and thus consulted an ophthalmologist. Cytological changes in the conjunctiva were not observed, which could be due to the short duration of the episode.

  12. 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.

  13. Multiple infections and associated risk factors among non-injecting cocaine users in Argentina Infecciones múltiples y factores de riesgo asociados entre usuarios de cocaína no inyectable en Argentina

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    Diana Rossi

    2008-05-01

    Full Text Available The aim of this study was to estimate the seroprevalence rates of human immunodeficiency virus (HIV, hepatitis B virus (HBV, core antibody, hepatitis C virus (HCV, and syphilis infections and analyze associated risk factors among 504 non-injecting cocaine users (NICU in Buenos Aires, Argentina. Participants were interviewed in face-to-face sessions through a short structured questionnaire. Using venipuncture, 10mL of blood was collected. Seroprevalence rates were: HIV (6.3%, HBV (9%, HCV (7.5%, and VDRL (4.2%. The risk of being infected with HIV, HBV, and HCV was significantly associated with having had a sex partner who was either a drug injector or who was known to be HIV positive. HIV and HCV infections were associated with former imprisonment, and HCV was associated with having been tattooed. Because of the rising number of NICU and the multiple infections detected, it is essential to implement prevention strategies focused on this population.El propósito de este estudio era estimar los índices de seroprevalencia del virus de inmunodeficiencia humano (VIH, virus de la hepatitis B (VHB, anticuerpo core, virus de la hepatitis C (VHC e infecciones de sífilis y analizar factores de riesgo asociados entre 504 usuarios de cocaína no inyectable (UCNI en la ciudad de Buenos Aires, Argentina. Se entrevistó a los participantes en sesiones cara a cara a través de un cuestionario estructurado corto. Usando el método de la venipunción se recogieron 10mL de sangre. Las tasas de seroprevalencia fueron: VIH (6,3%, VHB (9%, VHC (7,5%, y VDRL (4,2%. El riesgo de infección por VIH, VHB, y VHC se asoció significativamente a mantener relaciones sexuales con un compañero/a que era consumidor de la droga inyectada o que era conocido por ser VIH positivo. Las infecciones de VIH y de VHC se asociaron a haber estado encarcelado anteriormente, y la de VHC se asoció también a haber sido tatuado. Debido al número creciente de UCNI y a las infecciones m

  14. 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.

  15. 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

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

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    F. Gianaccini

    2009-12-01

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

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

    Science.gov (United States)

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

    2013-01-01

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

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

    OpenAIRE

    Darío Vezzani; Nicolás Schweigmann

    2002-01-01

    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 u...

  19. Condiciones ambientales en el sistema de bibliotecas públicas de la Municipalidad del Partido de General Pueyrredon (Pcia. Buenos Aires-Argentina)

    OpenAIRE

    Gauchi, Verónica; Laguarde, María Laura; Méndez, Rubens Ramón; Peluchi, Olga; Fernández, Oscar

    2011-01-01

    This study is based on the project research group Alexandria, which is devoting itself to the investigation of the conditions and working environment existing in Public Libraries of Municipality of General (Pvcia. of Buenos Aires - Argentina). The aim was to formalize a description of the conditions and working environment of public libraries in order to obtain objective data on risk factors to which the workers are exposed and the perception of librarians capable of producing or contribute t...

  20. Sobre la presencia de un Sciaenidae (Teleostei: Perciformes) en el “Belgranense” (= Fm. Pascua, Pleistoceno superior) de Centinela del Mar, Buenos Aires (Argentina)

    OpenAIRE

    Bogan, Sergio; Marcos M. Cenizo

    2008-01-01

    [EN] The objective of the present communication is to report the presence of an otolith (sagitta) referable to a whitemouth croaker, Micropogonias furnieri. This material proceeds from estuarine strata corresponding to the marine transgression “Belgranense” (Upper Pleistocene) of the locality of Centinela del Mar, province of Buenos Aires, Argentina. The otolith has a prominent protuberance at the external tip, character that nowadays is related to the southernmost population of the species t...

  1. Coleopterans associated with plants that form phytotelmata in subtropical and temperate Argentina, South America.

    Science.gov (United States)

    Campos, Raúl E; Fernández, Liliana A

    2011-01-01

    A list of the most common plants that form phytotelmata and their associated coleopterans (aquatic, semi-aquatic and terrestrial) from the northeastern subtropical and temperate area of Argentina, South America with biological and behavioral observations is presented in this study. Species of Poaceae (n = 3), Bromeliaceae (5), Apiaceae (6), Araceae (2), Urticaceae (1), Marantaceae (1), Arecaceae (1), Dipsacaceae (1) and Cyperaceae (1) were identified as phytotelmata. Aquatic species of Scirtidae (2), Dytiscidae (2), and Hydrophilidae (4), semi-aquatic Chelonariidae (2), and terrestrial species of Carabidae (3), Staphylinidae (5), Histeridae (1), Elateridae (1), Cantharidae (1), Cleridae (1), Tenebrionidae (1), Meloidae (1), Anthicidae (1), Chrysomelidae (3), Curculionidae (7) and Apionidae (1) were identified from six species of Eryngium L. (Apiales: Apiaceae), two species of Guadua Kunth (Poales: Poaceae), Aechmea distichantha Lemaire (Poales: Bromeliaceae), and from fallen leaves of Euterpe edulis Martius (Arecales: Arecaceae) from the temperate and subtropical area. The highest species richness was recorded in Eryngium phytotelmata. Fifteen species of beetles inhabit Eryngium cabrerae Pontiroli, 11 in E. horridum Malme, 7 in E. stenophyllum Urban, 4 in E. aff. serra Chamisso and Schlechtendal., 3 in E. elegans Chamisso and Schlechtendal, 2 in E. eburneum Decne and E. pandanifolium Chamisso and Schlechtendal. From bamboo, 6 species of coleopterans were collected from Guadua trinii (Nees) Nees ex Ruprecht and 4 from G. chacoensis (Rojas) Londoño and Peterson. Three species of aquatic coleopterans were recorded from A. distichantha and only one from E. edulis. PMID:22236084

  2. Weather Variability Associated with Aedes (Stegomyia) aegypti (Dengue Vector) Oviposition Dynamics in Northwestern Argentina.

    Science.gov (United States)

    Estallo, Elizabet L; Ludueña-Almeida, Francisco F; Introini, María V; Zaidenberg, Mario; Almirón, Walter R

    2015-01-01

    This study aims to develop a forecasting model by assessing the weather variability associated with seasonal fluctuation of Aedes aegypti oviposition dynamic at a city level in Orán, in northwestern Argentina. Oviposition dynamics were assessed by weekly monitoring of 90 ovitraps in the urban area during 2005-2007. Correlations were performed between the number of eggs collected weekly and weather variables (rainfall, photoperiod, vapor pressure of water, temperature, and relative humidity) with and without time lags (1 to 6 weeks). A stepwise multiple linear regression analysis was performed with the set of meteorological variables from the first year of study with the variables in the time lags that best correlated with the oviposition. Model validation was conducted using the data from the second year of study (October 2006- 2007). Minimum temperature and rainfall were the most important variables. No eggs were found at temperatures below 10 °C. The most significant time lags were 3 weeks for minimum temperature and rains, 3 weeks for water vapor pressure, and 6 weeks for maximum temperature. Aedes aegypti could be expected in Orán three weeks after rains with adequate min temperatures. The best-fit forecasting model for the combined meteorological variables explained 70 % of the variance (adj. R(2)). The correlation between Ae. aegypti oviposition observed and estimated by the forecasting model resulted in rs = 0.80 (P vector activity can be predicted three or four weeks in advance. PMID:25993415

  3. Potential schistosome-vector snails and associated trematodes in ricefields of Corrients province, Argentina. Preliminary results.

    Science.gov (United States)

    Rumi, A; Hamann, M I

    1990-01-01

    Considering the possibility of introduction of schistosomiasis mansoni into Argentina as a consequence of dam construction on the Rio De La Plata basin, preliminary studies have been carried out on agrosystems such as ricefields in Corrientes province with the following purposes: 1) to survey and estimate the relative abundance of planorbids and identify potential vector species; 2) to identify environmental factors capable of influencing Biomphalaria population dynamics; and 3) to find out snail-parasite associations and estimate snail infection rates in order to detect possible competitive interactions between larval stages of native trematodes that could be used in biological control of Schistosoma mansoni. Three potential schistosome vectors were detected in ricefields, namely Biomphalaria straminea, B. tenagophila and B. peregrina, although B. orbignyi, a species refractory to infection with S. mansoni, proved the most frequent and abundant. Positive correlations (P less than 0.05) were found between Biomphalaria abundance and some environmental parameters: conductivity, hardness, calcium, nitrites plus nitrates, ammonium and bicarbonates. Water temperature correlation was negative (P less than 0.05). No correlation (P less than 0.05) was found in total iron, phosphates (SRP), pH and soil granulometry. PMID:2134706

  4. Potential schistosome-vector snails and associated trematodes in ricefields of Corrients province, Argentina: preliminary results

    Directory of Open Access Journals (Sweden)

    Alejandra Rumi

    1990-09-01

    Full Text Available Considering the possibility of introduction of schistosomiasis mansoni into Argentina as a consequence of dam construction on the Rio De La Plata basin, preliminary studies have been carried out on agrosystems such as ricefields in Corrientes province with the following purposes: 1 to survey and estimate the relative abundance of planorbids and identify potential vector species; 2 to identify environmental factors capable of influencing Biomphalaria population dynamics; and 3 to find out snail-parasite associations and estimate snail infection rates in order to detect possible competitive interactions between larval stages of native trematodes that could be used in biological control of Schistosoma mansoni. Three potential schistosome vectors were detected in ricefields, namely Biomphalaria straminea, B. tenagophila and B. peregrina, although B. orbignyi, a species refractory to infection with S. mansoni, proved the most frequent and abundant. Positive correlations (P0.05 was found in total iron, phosphates (SRP, pH and soil granulometry. Echinocercariae developed from rediae and belonging to Petasiger sp., Paryphostomum sp., and other undetermined species were found.

  5. 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

    Directory of Open Access Journals (Sweden)

    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

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

    International Nuclear Information System (INIS)

    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

  7. 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

    Directory of Open Access Journals (Sweden)

    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.

  8. Proposal to reduce greenhouse gas emissions via landfill gas management in Greater Buenos Aires, Argentina. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Jones, D.B.

    1998-10-01

    The purpose of this project was to evaluate the feasibility of reducing the emission of greenhouse gases by collection, flaring, and possibly beneficially using the gas from landfills in Greater Buenos Aires, Argentina (GBA). Another purpose was to prepare a proposal to the US Initiative on Joint Implementation (USIJI) for a project to collect and possibly use the landfill gas (LFG). The project was carried out from September 30, 1997 through September 30, 1998. Collection and flaring of gas is feasible provided private firms have sufficient incentive to obtain greenhouse gas emission reduction benefits. The value of those benefits that would be required to motivate funding of an LFG management project was not explicitly determined. However, one independent power producer has expressed an interest in funding the first phase of the proposed project and paid for a detailed feasibility study which was conducted in August and September of 1998. As a result of this project, a proposal was submitted to the USIJI Evaluation Panel in June, 1998. In August, 1998, an office was established for reviewing and approving joint implementation proposals. The proposal is currently under review by that office.

  9. Estrategias habitacionales de familias de sectores populares y medios residentes en el área metropolitana de Buenos Aires (Argentina

    Directory of Open Access Journals (Sweden)

    María Mercedes di Virgilio

    2012-12-01

    Full Text Available This article analyzes the various ways in which families face difficult habitat access conditions in the post-Fordist city. In order to do this, we have comparatively explored the housing strategies implemented by popular and middle class families residing in the Buenos Aires metropolitan area (Argentina. We have chosen popular and middle class families as a response to our interest in analyzing the effects that position in the class structure has on the actions carried out by families for their reproduction. From this point of view, the logic, the decisions, and the goals that lead to access to habitat and to the resources that are mobilized, vary according to the position that families occupy in the class structure. In this article, we advance in the analysis of housing strategies, emphasizing the differences and similarities that are observed among social groups that occupy differential positions in this structure but live in nearby locations in the city, and among social groups occupying similar positions in production and consumption but who reside in different areas and/or locations of the urban space.

  10. Risk Analysis of Acute Or Chronic Exposure to Arsenic of the Inhabitants in a District of Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Cristina Vázquez

    2016-09-01

    Full Text Available The arsenic occurrence in the water constitutes a serious world health concern due to its toxicity. Depending on the intensity and duration of exposure, this element can be acutely lethal or may have a wide range of health effects in humans and animals. In Argentina, the origin of arsenic is mainly natural, and related to different geological processes. The Argentinean concern about arsenic and its influence on human health dates back to the previous century. The disease ascribed to arsenic contamination was called ‘chronic regional endemic hydroarsenism’. It is produced by the consumption of water with high levels of this element. In our study, we focused in La Matanza district, a very populated site in the Buenos Aires Province. An increasing concern of the inhabitants of the area regarding health problems was detected. In order to establish a full view of arsenic exposure in the area, several matrices and targets were analyzed. As matrices, water and soil samples were analyzed. As targets, canine and human hair was studied. The aim of this study was to investigate acute and chronically exposure to arsenic of La Matanza inhabitants.

  11. Winter survival of immature instars of Mansonia indubitans Dyar & Shannon and Mansonia titillans Walker (Diptera: Culicidae, in Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Juan P Torretta

    2006-09-01

    Full Text Available We conducted a whole year research on the ecology of Mansonia indubitans and Ma. titillans in Macáes Pond, Costanera Sur Reserve, Buenos Aires, Argentina. The usage of different floating plants by immature instars and their overwintering was analized. The percentage of usage of the available floating macrophytes (Pistia, Limnobium, and Salvinia by the larvae and pupae was studied. Also, we defined positivity (P+ as the percentage of plants with immature instars for each plant genus on a monthly basis. Ma. immature instars were captured throughout the year and Pistia was the resource most commonly exploited by the mosquitoes. The percentage of fourth-instar larvae and pupae on Pistia roots with respect to total immature instars captured was assessed on a monthly and seasonal basis. The proportion of fourth-instar larvae and pupae from both species of Mansonia on water lettuce roots, showed significant differences between months and seasons. Our results suggest that the populations of Ma. indubitans and Ma. titillans in Macáes Pond, survive during winter mainly as fourth-instar larvae.

  12. Environmental health education in schools as strategy for rodent control: an experience in a shantytown of Buenos Aires, Argentina.

    Science.gov (United States)

    Hancke, Diego; Suárez, Olga Virginia

    2014-01-01

    The general aim of this study was to assess the possibility of including elements of environmental health education within the curriculum of a school located in a shantytown of Buenos Aires city, Argentina. An environmental health education campaign was designed to introduce school-aged children to the problems posed by the lack of environmental sanitation, by using rodents as indicators of environmental disorder. The methodology implemented consisted of a lecture and two practical activities where the participating children were the evaluators of their neighborhood environment, recording the environmental factors that indicate direct or indirect presence of rodents and carrying out a survey about rodents among their neighbors. To assess the impact of the activities, an anonymous questionnaire was performed with the students before and after the campaign. The results showed that students were able to identify the man-made factors which favor the presence of rodents and were encouraged to propose strategies related to environmental sanitation to reduce rodent proliferation and the transmission of their parasites. This study demonstrated the feasibility of performing environmental health education campaigns in school-aged children by using practical activities to stimulate observation, participation, and comprehensive understanding of the problems posed by urban pests. PMID:24136385

  13. An Assessment of Spontaneous Vegetation Recovery in Aggregate Quarries in Coastal Sand Dunes in Buenos Aires Province, Argentina

    Science.gov (United States)

    Fernández Montoni, María Victoria; Fernández Honaine, Mariana; del Río, Julio Luis

    2014-08-01

    Sand dune quarries are a location of common aggregate mining activity developed in coastal areas, especially in the southeast Buenos Aires province, Argentina. In this article, spontaneous plant development after extraction activity ceased was evaluated. Five areas (three quarried and two natural/conservation areas) were sampled for plant cover and composition as well as sediment characterization. Different indexes, principal component analysis, and cluster analyses were applied to compare the areas. The dominant families observed in four of the five areas were Asteraceae, Poaceae, and Cyperaceae, and most of the species are commonly found in sandy and humid soils and/or modified/anthropized ones. Percentages of plant cover increased with time because of the cessation of active aggregate extraction. Indexes and multivariate analyses showed that it was possible to distinguish quarried and natural areas based on composition and vegetation cover. The distribution of plant species among the four areas responded to the presence of mining activity, but it also responded to the topographical position and consequently the depth of the groundwater level. Besides these differences, the four areas shared many native species. The results might indicate that once the activity has ceased, quarried areas may spontaneously and quickly develop a plant community with some similarities to those present in the nonquarried areas. However, given that the extracting activity involves the removal of the soil, revegetation of this type of environment depends on the presence of natural areas in the surroundings, which can serve as a source of seeds and propagules for plant regeneration.

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

    Directory of Open Access Journals (Sweden)

    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.

  15. Sixteen years of evolution of human respiratory syncytial virus subgroup A in Buenos Aires, Argentina: GA2 the prevalent genotype through the years.

    Science.gov (United States)

    Viegas, M; Goya, S; Mistchenko, A S

    2016-09-01

    Human respiratory syncytial virus (HRSV) is the main viral cause of acute lower respiratory tract infections (LRTI) in children worldwide. In recent years, several preclinical trials with vaccine candidates have been reported. It is in this sense that molecular epidemiological studies become important. Understanding viral dispersion patterns before and after the implementation of a vaccine can provide insight into the effectiveness of the control strategies. In this work we analyzed the molecular epidemiology of HRSV-A over a period of sixteen years (1999-2014) in Buenos Aires. By bioinformatic tools we analyzed 169 sequences of the G glycoprotein gene from hospitalized pediatric patients with LRTI. We found that GA2 was the most prevalent genotype (73.35%). GA5 genotype co-circulated in our region until 2009 when it was no longer detected, except in 2011. The recently globally emerging ON1 lineage with a 72-nt duplication increased its frequency to become the only lineage detected in Buenos Aires in 2014. By discrete phylogeographic analysis of global ON1 strains we could determine that Panama could be the location of the MRCA dated June 20, 2010; and this lineage could be introduced in Argentina from Spain in April 2011. This analysis also showed temporary and geographical clustering of ON1 strains observed as phylogenetic clades with strains exclusively associated from a single country, nevertheless among our 44 ON1 strains from three outbreaks (2012-2014) we could also detect posterior reintroductions and circulation from United States, Cuba, South Korea, and Spain. The continuous phylogeographic analysis of one sublineage of Argentine ON1 strains allowed us to establish that there could be a local clustering of some strains even in neighborhoods. This work shows the potential of this type of bioinformatic tools in the context of a future vaccine surveillance network to trace the spread of new genetic lineages in human populations. PMID:27154330

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

    OpenAIRE

    Avena, Sergio Alejandro; Goicoechea, Alicia Susana; Clapsos, R.; Dugoujon, Jean Michel; Dejean, Cristina Beatriz; Perosino, María C.; Carnese, Francisco R.

    2003-01-01

    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...

  17. ENTEROPARASITOS EN NIÑOS RESIDENTES EN ZONA RURAL DEL PARTIDO DE CARMEN DE PATAGONES. PROVINCIA DE BUENOS AIRES. ARGENTINA

    Directory of Open Access Journals (Sweden)

    SIXTO COSTAMAGNA

    1999-01-01

    Full Text Available RESUMEN Como parte del Programa de Atención Primaria de la Salud (APS del año 1996, y en virtud de que no existían datos epidemiológicos referidos a enteroparásitos hallados en niños de 0 a 14 años, residentes en una zona rural del Partido de Carmen de Patagones, Provincia de Buenos Aires, es que se realizó el presente estudio epidemiológico descriptivo. Se estudiaron 210 niños a los que se les efectúo un estudio parasitoscópico seriado de materia fecal y mucus anal. Los resultados mostraron que el 60,5% de la población estudiada era portadora de algún parásito intestinal. El monoparasitismo hallado fue de 67%, mientras que el 33% restante presentó entre 2 y 5 formas parasitarias. El espectro parasitario fue el siguiente: Entamoeba coli 31,5%; Giardia lamblia 24,7 %; Enterobius vermicularis 18%; Hymenolepis nana 10,4%; Blastocystis hominis 10,3%; Chilomastix mesnili 2,5%; Uncinarias 1%; Entamoeba histolytica 0,9% y Trichuris trichiura 0,5%. La distribución parasitaria en los distintos sectores estudiados fue en general homogénea excepto para H. nana la cual presentó una prevalencia más alta en zonas de riego con relación a la zona seca . Los resultados obtenidos fueron comunicados a las autoridades sanitarias correspondientesENTEROPARASITES IN CHILDREN LIVING IN RURAL AREAS AT THE PARTIDO DE CARMEN DE PATAGONES. PROVINCE OF BUENOS AIRES.ARGENTINA In the absence of epidemiological data on enteroparasites in a population of 0-14 year-old residents in the rural area of Partido de Carmen de Patagones, Province of Buenos Aires, Argentina, a descriptive and epidemiologic study was carried out as part of a Primary Health Care Program ( PHCP. Faecal matter and anal mucus serial parasitoscopic studies were carried out on 210 children. Results indicate that 60,5% ofthe studied population is intestinal-parasite carrier. Positive monoparasitism was of 67%, while the remaining 33% was manifested in 2-to-5 parasite forms. Parasite

  18. 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

  19. HIV Status Disclosure Among Infected Men Who Have Sex With Men (MSM) in Buenos Aires, Argentina

    OpenAIRE

    Carballo-Diéguez, Alex; Balán, Iván C.; Dolezal, Curtis; Ibitoye, Mobolaji; María A Pando; Marone, Rubén; Barreda, Victoria; Ávila, María Mercedes

    2013-01-01

    Five hundred men who have sex with men were recruited in Buenos Aires using respondent driven sampling. Of them, 46 respondents (24 of them not gay identified) who were HIV infected were asked questions on serodisclosure. The sample was characterized by indicators of low socioeconomic status. Most of the respondents reported being in good to excellent health despite 42% of them having been diagnosed with AIDS. Only 10% of respondents had not disclosed their serostatus to at least one person. ...

  20. Análisis FODA del sector ostricultor artesanal de la provincia de Buenos Aires, Argentina

    OpenAIRE

    Errazti, Elizabeth; Gualdoni, Patricia; Bertolotti, María Isabel; Pagani, Andrea N.

    2011-01-01

    Se considera a la ostricultura artesanal de la provincia de Buenos Aires como una actividad promisoria y de alto impacto para el desarrollo local, sin embargo, los ostricultores tienen dificultades en la cadena productiva para: lograr un volumen de producción que les permita abastecer al mercado en forma continua y con calidad uniforme, acceder al mercado interno consolidado para colocar lo producido, lograr una escala eficiente y obtener financiamiento adecuado. Se realizó un análisis FODA (...

  1. El urbanismo Inka y su vinculación con mesoclimas en el sitio "El Shincal de Quimivil" (Provincia de Catamarca, Argentina Inka urbanism associated with mesoclimatic conditions at the site "El Shincal de Quimivil" (Catamarca province, Argentina

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    Aylen Capparelli

    2006-12-01

    this framework, we propose that the Inkas used their knowledge of different habitats and associated ecological factors to plan and guarantee the smooth functioning of each architectonic unit at every administrative center. Therefore, our goal was to establish if there is a connection between different mesoclimatic conditions at El Shincal Inka site (Catamarca, Argentina and the spatial distribution of three different architectural-functional structures (grain storage, residence, and cultivation and a control (the plaza. Six climatic variables were studied through uni and multivariate analysis. The storage area presented the best conditions for drying and preserving crop grains: the highest soil temperature, evaporative capacity, and water vapor saturation deficit of the air. The residential area showed low evaporative capacity and water vapor saturation deficit during spring and summer, making it a more comfortable place under high seasonal air temperatures. The cultivation area presented lower air evaporative capacity during days with Zonda (regional wind with Foehn-like effect and generally a mild mesoclimate that fits better the requirements of maize agroecology.

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

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    Laura M. Ferman

    2010-09-01

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

  3. Generalized cost-effectiveness analysis of a package of interventions to reduce cardiovascular disease in Buenos Aires, Argentina

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    Souto Alberto

    2009-05-01

    Full Text Available Abstract Background Chronic diseases, represented mainly by cardiovascular disease (CVD and cancer, are increasing in developing countries and account for 53% of chronic diseases in Argentina. There is strong evidence that a reduction of 50% of the deaths due to CVD can be attributed to a reduction in smoking, hypertension and hypercholesterolemia. Generalized cost-effectiveness analysis (GCE is a methodology designed by WHO to inform decision makers about the extent to which current or new interventions represent an efficient use of resources. We aimed to use GCE analysis to identify the most efficient interventions to decrease CVD. Methods Six individual interventions (treatment of hypertension, hypercholesterolemia, smoking cessation and combined clinical strategies to reduce the 10 year CVD Risk and two population-based interventions (cooperation between government, consumer associations and bakery chambers to reduce salt in bread, and mass education strategies to reduce hypertension, hypercholesterolemia and obesity were selected for analysis. Estimates of effectiveness were entered into age and sex specific models to predict their impact in terms of age-weighted and discounted DALYs saved (disability-adjusted life years. To translate the age- and sex-adjusted incidence of CVD events into health changes, we used risk model software developed by WHO (PopMod. Costs of services were measured in Argentine pesos, and discounted at an annual rate of 3%. Different budgetary impact scenarios were explored. Results The average cost-effectiveness ratio in argentine pesos (ARS$ per DALY for the different interventions were: (i less salt in bread $151; (ii mass media campaign $547; (iii combination drug therapy provided to subjects with a 20%, 10% and 5% global CVD risk, $3,599, $4,113 and $4,533, respectively; (iv high blood pressure (HBP lowering therapy $7,716; (v tobacco cessation with bupropion $ 33,563; and (iv high-cholesterol lowering therapy

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

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    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.

  5. 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.

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

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    Avena, Sergio Alejandro

    2003-01-01

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

  7. Decline in HAV-associated fulminant hepatic failure and liver transplant in children in Argentina after the introduction of a universal hepatitis A vaccination program

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    Cervio G

    2011-09-01

    Full Text Available Guillermo Cervio1, Julio Trentadue2, Daniel D'Agostino3, Carlos Luque4, Mariano Giorgi5, Judith Armoni6, Roberto Debbag6 1Unidad de Transplante Hepatico, Hospital Prof Dr Juan P Garrahan, 2Unidad de Terapia Intensiva, Hospital Universitario Fundación Favaloro, 3Unidad de Gastroenterología, Hospital Italiano De Buenos Aires, 4Unidad de Transplante Hepatico, Hospital Universitario Austral, 5Departamento de Farmacologia, Escuela de Medicina de la Universidad Austral, 6Sanofi Pasteur, Buenos Aires, Argentina Introduction: Hepatitis A virus (HAV infection is a vaccine-preventable disease. The most severe complication in children is fulminant hepatic failure (FHF, estimated to occur in 0.4% of cases; patients with FHF often require a liver transplant (LT. Following another outbreak of HAV infection in Argentina during 2003–2004, a one-dose HAV universal immunization (UI program was started in 2005, resulting in a reduction in the incidence of HAV infection. We have investigated the impact of HAV UI on the trends in the occurrence of FHF and LT in children. Methods: All pediatric cases of FHF admitted to four pediatric centers in Buenos Aires during March 1993–July 2005 were retrospectively reviewed, and data of cases during August 2005–December 2008 were collected. Information about demography, HAV infections and vaccination status, diagnostic data for FHF using the Pediatric Acute Liver Failure criteria, clinical laboratory results, encephalopathy, the severity of liver disease using the Pediatric End Stage Liver Disease score, assessment of patients on the LT waiting list using King's College Criteria for LT, treatment given for FHF (pre- and post-transplant, and clinical outcome were collected using a case report form. The frequency and outcomes of HAV-associated FHF and LT cases before and after UI were analyzed. Results: During the pre-immunization period, March 1993–July 2005, 54.6% (N = 165 of FHF cases were caused by HAV; HAV-associated

  8. Association of CAPN1 and CAST gene polymorphisms with meat tenderness in Bos taurus beef cattle from Argentina

    OpenAIRE

    Pablo Corva; Liliana Soria; Alejandro Schor; Edgardo Villarreal; Macarena Pérez Cenci; Mariana Motter; Carlos Mezzadra; Lilia Melucci; Cristina Miquel; Enrique Paván; Gustavo Depetris; Francisco Santini; Juan Grigera Naón

    2007-01-01

    The activity of the calpains/calpastatin proteolytic system is closely related to the postmortem tenderization of meat. We investigated the association between beef tenderness and single nucleotide polymorphism (SNP) markers on the CAPN1 gene (SNP316, alleles C/G; SNP530 alleles A/G) and the CAST gene 3' untranslated region (SNP2870, alleles A/G). We sampled nine slaughter groups comprising 313 steers which had been reared in beef production systems in Argentina between 2002 and 2004 from cro...

  9. Antimony: a traffic-related element in the atmosphere of Buenos Aires, Argentina.

    Science.gov (United States)

    Gómez, Darío R; Fernanda Giné, María; Claudia Sánchez Bellato, Ana; Smichowski, Patricia

    2005-12-01

    Vehicular traffic is one of the main sources of antimony in highly populated urban areas like Buenos Aires where an overall traffic density of 1 500 000 vehicles per day (corresponding to 7500 vehicles km(-2)) is estimated. In this context, a study was undertaken to ascertain the levels of Sb and other traffic-related elements (TRE) in the atmosphere of this city. To this end, sixty-seven samples of PM-10 particulate matter were collected during eight days in nine representative sampling sites located downtown Buenos Aires and spread over an area of about 30 km2. The collection of particulate matter was performed on ash-free glass-fibre filters using high volume samplers with PM-10 sampling heads. A combination of aqua regia and perchloric acid was used for leaching metals from filters. The resulting solutions were evaporated and then diluted with 0.1 mol l(-1) HCl. Antimony was determined by inductively coupled plasma-quadrupole mass spectrometry (ICP-QMS) at ng g(-1) levels. Concentrations of Sb varied from 12.9 +/- 0.9 to 375 +/- 23 microg g(-1)(equivalent to 0.87 +/- 0.06 to 15.3 +/- 0.8 ng m(-3)). Statistical analysis was performed on the data set including the measured PM-10 mass and Sb concentrations for the monitored period. Correlations of Sb with other TRE namely, Cu and Mo were also assessed. The highest concentrations of Sb were detected at two sites (Hospital Alemán and Casa Rapallini) located in streets with traffic consisting mostly of passenger cars and showing a "stop-and-go" pattern in peak hours. Antimony levels in the Buenos Aires PM-10 are by far below the level of 0.5 mg m(-3)(for an 8 hour workday, 40 hour work week) set by the US Occupational Safety and Health Administration (OSHA) for occupational exposure. However, monitoring of Sb and other TRE should be carried out in a systematic fashion to detect the possibility of increases in from the present levels. PMID:16307067

  10. Briofitas y pteridofitas en sedimentos del Holoceno de la provincia de Buenos Aires, Argentina

    OpenAIRE

    Prieto, A.R.; M. Quattrocchio

    1993-01-01

    Se describen csporJ!i de briu fil a~ y pteridolit~s provcnh.:nlc~ de ~imen to.i. del Holoccno de la Pro\\·incia tJc Buenos Aires, Argcntin:l. Se diferenciaron cu.:uro géneros de brio lilas: Ricciu, Riclfo, A!lllroccros y Plumxcrvs )' sicle géneros de ptcridofitas: Piluloria, Anemia, Notl10laenfJ, DotyOpten·s, Cheilomlrt>s o Pclhmr y Pol)1wtJium. ~e determinaron cua· tro especie..~ del género Pllccoeeros : P. !ae1 is, P. umuis, P. hulhiculoms y P. caroli11imws a part ir de sus \\'...

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

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    Susana Ortale

    2009-12-01

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

  12. 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

  13. Reflexiones acerca de la significación cultural de un malón indígena (Mercedes, provincia de Buenos Aires, Argentina

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    Laura Aylén Enrique

    2012-06-01

    Full Text Available The emergence of the city of Mercedes (Buenos Aires province, Argentina is closely linked to the history of, not always harmonious, border interethnic relations dating from the colonial period. We analyze some strategies in the use of the past as well as the dynamic character present in the construction of cultural resources of the area after the recent addition to the historical monument "Cruz de Palo" of a plaque commemorating indigenous victims of a fight that occurred in early nineteenth century.

  14. El rururbano: un espacio de vulnerabilidad y riesgo. estudio cualitativo en la ciudad de bahía blanca, provincia de buenos aires, argentina

    OpenAIRE

    Santarelli Serer Silvia Alicia; Sereno Claudia A.

    2012-01-01

    El trabajo caracteriza el rururbano —límite externo del periurbano— de la ciudad de Bahía Blanca, provincia de Buenos Aires (Argentina), como un espacio expuesto al crecimiento urbano y como un ámbito de fragilidad y vulnerabilidad para quienes habitan estas zonas. Para ello se puntualiza en el riesgo que corren los residentes del borde frente a la amenaza de modificar sus modos de vida y de perder sus propiedades ante el avance urbano. Los resultados permiten precisar las fortalezas y debili...

  15. IDENTIDAD NACIONAL Y SU RELACIÓN CON LA DOMINANCIA SOCIAL Y LA TOLERANCIA A LA TRANSGRESIÓN EN RESIDENTES DE BUENOS AIRES (ARGENTINA)

    OpenAIRE

    SANTIAGO MONSEGUR; AGUSTÍN ESPINOSA; MAITE BERAMENDI

    2014-01-01

    El objetivo del estudio que se informa fue des cribir y analizar los componentes de la iden- tidad nacional argentina y su relación con la orientación de la dominancia social (ODS) y la tolerancia a la transgresión normativa. Para tal fin, se realizaron encuestas a 170 sujetos que re - sidían en la Ciudad Autónoma de Buenos Aires y el Conurbano Bonaerense (República Argen tina). Los resultados evidencian un grado de identifi- cación medio-alto con la categoría social argen - tino, a la vez qu...

  16. Aportes para el debate. Instrumentos de gestión ambiental en la provincia de Buenos Aires, Argentina. Una mirada interdisciplinar

    OpenAIRE

    Clara María Minaverry; Verónica Lucía Cáceres

    2016-01-01

    El artículo recupera reflexiones de dos investigaciones que siguieron una metodología cualitativa. Contribuye al conocimiento sobre los instrumentos de gestión ambiental en una jurisdicción particular de Argentina: la provincia de Buenos Aires (PBA). Tiene como punto de partida el reconocimiento de la importancia del trabajo interdisciplinar en la reflexión sobre la problemática ambiental y centra la atención por un lado, en las herramientas de gestión ambiental propuestas en dos campos de...

  17. Huerta agroecológica comunitaria en el Jardín de Infantes N° 904 del partido de Ensenada (provincia de Buenos Aires, Argentina)

    OpenAIRE

    Del Huerto, María del Carmen; Chaves, Natalia; Maldonado, José Antonio; Gonzales Andía, Eduardo; Farace, Mariano; Torres, Marian Nathalia; D'Agostino, Gino Gastón; Costello, Ana Paula; Arisvanarreta, Rocío; Zaffaroni, Agustina; Paoloca, Iván; Domínguez, Daniela; Vallejo Azar, Mariana Nahir; Maydup, María Luján; Bogino, María Leonor

    2015-01-01

    Desde marzo de 2011 se trabaja en Villa Catella (Pdo. de Ensenada, Provincia de Buenos Aires, Argentina) en la promoción de la salud y la soberanía alimentaria a través de la producción agroecológica de alimentos. Se emprendió una huerta en la Unidad Sanitaria Nº 80 y se inició otra en el Jardín de Infantes N°904 del mencionado barrio. Los participantes fueron los miembros de la comunidad educativa, integrada por los niños, docentes, autoridades, auxiliares, padres y vecinos. El mantenimiento...

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

    OpenAIRE

    María Mercedes Saizar; Mercedes Sarudiansky; Guido Pablo Korman

    2013-01-01

    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 ...

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

    OpenAIRE

    Ferraro, Daiana Paola; Williams, Jorge Daniel

    2005-01-01

    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 paralectotip...

  20. Trophic ecology of Mugil liza at the southern limit of its distribution (Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Gustavo Thompson

    2015-09-01

    Full Text Available AbstractIn order to get to know the habitat and feeding habits of Mugil liza on the southern coast of Buenos Aires province, 65 specimens obtained at two sampling sites - the San Blas bay (SBB and the mouth of the Quequén-Salado river (QSR - during spring (November 2012 and summer (February 2013 were analyzed. Specimens were measured, sexed and weighed, their stomachs were removed and their stomach contents weighed and analyzed under the stereoscopic microscope. The specimens were adults, 28-49 cm in length and weighing 380-1100 g. Population growth was higher in the SBB (TW: 0.003*TL3.36, than in RQS (TW: 0.045*TL2.61. About 98% of the stomachs had some content, their repletion rate being of between 0.4 and 1.2%. About 75% of the stomachs contained very fine sand with few benthic organisms (algae, copepods, foraminifera, whereas the remaining 25% of stomachs contained coarse sand and a greater presence of benthic fauna (amphipods, bivalves, gastropods and coral organisms. The linear relationship between the weight of stomach contents and the total weight and length of the fish showed that the rates of growth (slope were the same at both sites, but intercept values were significantly higher for San Blas bay (test parallelism; p < 0.001.

  1. Pediatric hydatidosis in the south-east of the Buenos Aires province, Argentina.

    Science.gov (United States)

    Dopchiz, M C; Elissondo, M C; Andresiuk, M V; Maiorini, E; Gutiérrez, A M; Muzulin, P M; Rosenzvit, M C; Lavallén, C M; Denegri, G

    2009-01-01

    Hydatidosis is a zoonosis produced by the metacestode Echinococcus spp. The aims of this research are: to contribute to the knowledge of pediatric hydatidosis in the south-east of Buenos Aires province, to study its evolution from 1993 to 2002 at the Regional Maternity and Pediatric Hospital "Dr. Victorio Tetamanti", to determine the strains involved and to discuss the importance of the disease. The clinical records of diagnosed and/or operated patients were reviewed with regard to the hydatid disease. The strain was determined by using PCRs with Eg1 121a/122a primers. Forty-four cases were analyzed. Fifty nine point one per cent of the patients were boys. The mean age was 8 SD=3.8 years. Sixty one point four per cent had urban residence. Ultrasonography was used in 61% of the cases. The hepatic location was most frequently seen and the liver/lung ratio was 1.25. Ninety point nine per cent of patients received surgical treatment. Albendazole was used in 52% of cases. The average hospitalization time was 11 days. The G1/G2 strain group was determined. This report is the first one of its kind in the studied region. The permanence of hydatidosis in the region depends on the natural transmission of the parasite in the absence of control and prevention measures. The health authorities should implement strategies of prevention and control in the study area. PMID:19623901

  2. Magnetic Characterization of Stream-Sediments From Buenos Aires Province, Argentina, Affected by Pollution

    Science.gov (United States)

    Chaparro, M. A.; Sinito, A. M.; Bidegain, J. C.; Gogorza, C. S.; Jurado, S.

    2001-12-01

    A wide urban area from Northeast of Buenos Aires Province is exposed to an important anthropogenic influence, mainly due to industrial activity. In this two water streams were chosen: one of them (Del Gato stream, G) next to La Plata City and the another one (El Pescado stream, P) on the outskirts of the city. Both streams have similar characteristics, although the first one (G) has a higher input of pollutants (fluvial effluents, fly ashes, solid wastes, etc.) than the last one (P). Sediments analyzed in this work are limes from continental origin of PostPampeano (Holocene). Although, some cores were affected by sandy-limy sediments with mollusc valves from Querandino Sea (Pleistocene - later Holocene) and limy sediments of chestnut color with calcareous concretions from the Ensenadense. Magnetic measurements and geochemical studies were carried out on the samples. Among the magnetic parameters, specific susceptibility (X), X frequency-dependence (Xfd%), X temperature-dependence, Natural Remanent Magnetization (NRM), Isothermal Remanent Magnetization (IRM), Saturation IRM (SIRM), coercivity of remanence (Bcr), S ratio and SIRM/X ratio, Anhysteric Remanent Magnetization (ARM), Magnetic and Thermal Demagnetization were studied. The magnetic characteristics for both sites indicate the predominance of magnetically soft minerals on G site and relatively hard minerals on P site. Magnetite is the main magnetic carrier, Pseudo Single Domain and Single Domain grains were found. Chemical studies show (in some cases) a high concentration for some heavy metals (Pb, Cu, Zn, Ni and Fe) on the upper 22-cm. Contents of heavy metals and ARM were correlated. Very good correlation (R> 0.81) is found for Cu, Zn, Ni, Fe and the sum (of Pb, Cu, Zn and Ni), and a weaker correlation for Pb.

  3. Patient–provider perceptions on engagement in HIV care in Argentina

    OpenAIRE

    Bofill, Lina Margarita; Lopez, Maria; Dorigo, Analia; Bordato, Alejandra; Lucas, Mar; Cabanillas, Graciela Fernandez; Sued, Omar; Cahn, Pedro; Cassetti, Isabel; Weiss, Stephen; Jones, Deborah

    2013-01-01

    Approximately 30% of patients participating in the national antiretroviral therapy (ART) program in Argentina fail to achieve an undetectable viral load, and approximately 25% are not retained in care. This qualitative study was designed to explore and identify factors associated with engagement and retention in public and private health care in Buenos Aires, Argentina. Qualitative data from key informants (n = 12) and focus groups (n = 4 groups) of patients and providers from private and pub...

  4. 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

  5. Associations of endothelial function and air temperature in diabetic subjects

    Science.gov (United States)

    Background and Objective: Epidemiological studies consistently show that air temperature is associated with changes in cardiovascular morbidity and mortality. However, the biological mechanisms underlying the association remain largely unknown. As one index of endothelial functio...

  6. 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.

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

    OpenAIRE

    Santiago Brizuela; Marcos M. Cenizo; Daniel A. Tassara

    2015-01-01

    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 th...

  8. 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.

  9. Association between air quality and quality of life.

    Science.gov (United States)

    Darçın, Murat

    2014-02-01

    Air quality-or its converse, air pollution-is a significant risk factor for human health. Recent studies have reported association between air pollution and human health. There are numerous diseases that may be caused by air pollution such as respiratory infection, lung cancer, cardiovascular disease, chronic obstructive pulmonary disease, and asthma. In this study, the relationship between air quality and quality of life was examined by using canonical correlation analysis. Data of this study was collected from 27 countries. WHO statistics were used as the main source of quality of life data set (Y variables set). European Environment Agency statistics and (for outdoor air-PM10) WHO statistics were used as the main source of air quality data set (X variables set). It is found that there are significant positive correlation between air quality and quality of life. PMID:24014226

  10. Caracteres anatómicos de la vegetación costera del Río Salado (Noroeste de la provincia de Buenos Aires, Argentina Anatomic features of Salado river coastal vegetation (Northwest of Buenos Aires Province, Argentina

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    Nancy Mariel Apóstolo

    2005-12-01

    Full Text Available Veintiún especies (doce Dicotyledoneae y nueve Monocotyledoneae pertenecientes a la vegetación costera del río Salado (noroeste de la provincia de Buenos Aires, Argentina fueron estudiadas con el fin de determinar las características anatómicas relacionadas a estrategias adaptativas al medio. Dichas especies pertenecen a los humedales de la cuenca del Salado y, por lo tanto, están afectadas por inundación, sequía temporaria y alta salinidad en agua y suelo. Caracteres anatómicos típicos de las especies que crecen en humedales combinados con características xeromórficas actuarían como estrategia adaptativa para aclimatarse en dicho medio. Los representantes de Poaceae y Cyperacae y algunos de Asteraceae tienen aerénquima en raíz y tallo. El 50% de las especies estudiadas muestran estructura Kranz. Escasas especies de Dicotyledoneae (Aizoaceae y Asteraceae muestran pelos de indumento. El tejido acuífero y los mucílagos son evidentes en especies de Aizoaceae, Chenopodiaceae, Malvaceae y Asteraceae. Ceras epicuticulares están presentes en mayor o menor grado en todas las especies analizadas. El 40% de las especies tienen glándulas de sal, principalmente las Poaceae. Cristales de oxalato de calcio y magnesio en diversas formas se observan en la mayoría de la Dicotyledoneae, no presentándose en Monocotyledoneae. Estas características anatómicas indican la capacidad de las especies para sobrevivir a condiciones extremas del medio en la vegetación costera del río Salado.In order to determine the anatomical features acting as adaptive strategies to the environment, 21 species were studied (12 Dicotyledoneae and nine Monocotyledoneae belonging to the coastal vegetation of the Salado river. These species are included in wetlands of Salado River Basin and are affected by flooding, drought and high salinity in water and soil. Typical anatomical features of wetland plants combined with xeromorphic characters could act as adaptive

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

    OpenAIRE

    Adolfo Rafael de Roodt

    2014-01-01

    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...

  12. The new mineral species brodtkorbite, Cu2HgSe2, and the associated selenide assemblage from Tuminico, Sierra de Cacho, La Rioja, Argentina

    International Nuclear Information System (INIS)

    .02. Brodtkorbite is monoclinic, a 7.492(5), b 4.177(1), c 7.239(4) A, β 114,20(5)o, V 206.6(2) A3, a:b:c 1.7936.1:1.7330, space group P21/n (14). The strongest seven X-ray powder-diffraction lines [d in A (I) (hkl)] are: 3.991(70)(101), 3 576(50)(110), 3.534(50)(011), 3.414(50)(200), 2.731(100)(112), 2.223(70)(211) and 2.072(50)(113,312). The mineral name honors Milka Kronegold de Brodtkorb, Professor at the universities of Buenos Aires and La Plata, Argentina, for her outstanding contributions to the mineralogy and economic geology of Argentina. The selenide mineralogy at Tuminico is discussed on the basis of an extensive electron-microprobe study. The conditions of formation for brodtkorbite and the associated selenides are inferred from mineral stabilities and fluid-inclusion studies. (author)

  13. Laura Malosetti Costa y Marcela Gené (comps.). Atrapados por la imagen. Arte y política en la cultura impresa argentina : Buenos Aires, Edhasa, 2013, 354 páginas

    OpenAIRE

    Cimadevilla, Pilar

    2014-01-01

    En Atrapados por la imagen. Arte y política en la cultura impresa argentina, los autores se proponen continuar con la línea inaugurada en Impresiones porteñas. Imagen y palabra en la historia cultural de Buenos Aires publicado en 2009. En este nuevo volumen, amplían el recorte geográfico e incluyen también artículos dedicados a ciertas publicaciones editadas en el interior del país y en Europa (que tuvieron circulación en Argentina). La propuesta consiste en trazar un arco temporal, que va de...

  14. Proyecto "Encuesta a los Servicios Alimentarios de Comedores Escolares Estatales" (PESCE): alcance de las metas nutricionales de las prestaciones alimentarias de los comedores escolares de Gran Buenos Aires, Argentina Proyect: "Survey of State School meal service" (PESCE): Scope of Food Supply Nutritional Goals in State School in Gran Buenos Aires, Argentina

    OpenAIRE

    Susana Buamden; Andrea Graciano; Guillermo Manzano; Eleonora Zummer

    2010-01-01

    Objetivo: Evaluar el alcance de las metas nutricionales de las prestaciones alimentarias de los comedores escolares estatales de la región Gran Buenos Aires, Argentina, en 2007. Materiales y Métodos: Unidad de análisis: prestación alimentaria de todas las escuelas estatales de la región. Metas nutricionales: elaboradas por prestación, para energía, nutrientes y alimentos críticos por grupo etario (Grupo 1: 3 años; Grupo 2: 4-8 años; Grupo 3: 9-14 años). Encuesta ad-hoc: administrada por nutri...

  15. Environmental life quality perception in the city of general Daniel Cerri, Buenos Aires, Argentina: Proposal for a qualitative research methodology in Geography

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    Silvina Spagnolo

    2012-01-01

    Full Text Available The behavioral and perceptual approach adopted by the geographical science may turn out to be very significant for territory environmental management. Such an approach does not intend to replace the qualitative approach, though it does propose their complementarity. The general aim of this paper is getting to know what the inhabitants of the city of General Daniel Cerri [Bahía Blanca, province of Buenos Aires, Argentina] believe the quality of their environmental life is. As for the methodology used, a population survey was conducted, which was representative of the population being studied. The survey was divided in three parts: a structural part, which will enable us to learn how the information possessed about the place is perceived; an evaluative section, which will show the way space is valued in connection with the decisions that should be made; and a preferential one, focused on the analysis of the preferences towards certain places

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

    Science.gov (United States)

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

    2014-08-01

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

  17. Quality of Life in Type 2 Diabetes Mellitus Patients Requiring Insulin Treatment in Buenos Aires, Argentina: A Cross-Sectional Study

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    Andres Pichon-Riviere

    2015-07-01

    Full Text Available Background Decision-makers have begun to recognize Health-Related Quality of Life (HRQoL as an important and measurable outcome of healthcare interventions; and HRQoL data is increasingly being used by policy-makers to prioritize health resources. Our objective was to measure HRQoL in a group of Type 2 Diabetes Mellitus (T2DM patients receiving insulin treatment in Buenos Aires, Argentina. Methods We conducted a cross-sectional study of patients with T2DM over 21 years of age, treated with either Neutral Protamine Hagedorn (NPH insulin or Insulin Glargine (IG, who had not changed their baseline schedule in the last 6 months. The recruitment was during 2006–7 in nine private diabetes specialists’ offices in Buenos Aires, Argentina. A standardized diabetes-specific HRQoL questionnaire, the Audit of Diabetes Dependent Quality of Life (ADDQoL, was used. Results A total of 183 patients were included (93 receiving NPH and 90 receiving IG. The mean QoL score was: 0.98 (SD: 0.89 and the diabetes specific QoL was: -1.49 (SD: 0.90. T2DM had a negative impact on HRQoL with a mean Average Weighted Impact (AWI score on QoL of -1.77 (SD: 1.58. The greatest negative impact was observed for domains: ‘worries about the future’, ‘freedom to eat’, ‘living conditions’, ‘sex life’, and ‘family life’. The mean AWI score was -1.71 (SD: 1.48 in patients treated with IG and -1.85 (SD: 1.68 in patients receiving NPH, this difference was not statistically significant. Conclusion The ADDQoL questionnaire is a tool that can be used in Argentina to measure the QoL of patients with diabetes when evaluating diabetes care programs. The scores of QoL in our selected population did not differ from those reported in high-income countries. We expect that the results of this study will increase healthcare providers’ awareness of patients’ perceived QoL and help to overcome the barriers that delay insulin treatment; mainly clinical inertia and patient

  18. Endoparasitic infections in dogs from rural areas in the Lobos District, Buenos Aires province, Argentina Infecçóes endoparasitas em cães de áreas rurais do distrito de Lobos, província de Buenos Aires, Argentina

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    Marcela Cecilia Dopchiz

    Full Text Available Dogs are definite hosts for several zoonotic helminthes and protozoan. Rural areas from the Lobos District in the northeast of Buenos Aires province, Argentina, are mainly used for livestock activity, increasing in this way the number of dogs on farms as well as the human risk of parasitic infections. The aims of this research were to evaluate the endoparasitic infections in dogs from farms in the Lobos District and analyze their zoonotic importance as well as several risk practices and habits of the rural population. Forty-two dog fecal samples obtained in 21 farms were analyzed through coproparasitological methods and coproantigen tests, which resulted in an overall parasite prevalence of 69.05% and 80.95% of the parasitized farms. The most frequent parasites were Trichuris vulpis and Eucoleus aerophila (26.19%, Echinococcus granulosus (19.05%, Uncinaria stenocephala and coccids (14.29%. The analysis of epidemiological files showed several habits of the rural population considered as risk factors associated with the presence of fecal samples parasitized and the presence of E. granulosus on the farms. It is clear that people involved with the farms studied were exposed to several helminthes that could cause serious diseases like cystic echinococcosis, which can become an important public health issue and affect the economy worldwide.Os cães são hospedeiros definitivos de vários helmintos e protozoários zoonóticos. As áreas rurais do distrito de Lobos, no nordeste da província de Buenos Aires, Argentina, destinam-se principalmente à atividade pecuária aumentando desta forma o número de cães em fazendas, bem como o risco humano de infecções parasitárias. Os objetivos desta pesquisa foram avaliar as infecções endoparasitas em cães de fazendas do distrito de Lobos e analisar a sua importância zoonótica, bem como as práticas de risco e hábitos da população rural. Quarenta e duas amostras de fezes de cães obtidos em 21

  19. Yeast communities associated with the bulk-soil, rhizosphere and ectomycorrhizosphere of a Nothofagus pumilio forest in northwestern Patagonia, Argentina.

    Science.gov (United States)

    Mestre, M Cecilia; Rosa, Carlos A; Safar, Silvana V B; Libkind, Diego; Fontenla, Sonia B

    2011-12-01

    Soil microorganisms play an important role in soil quality and they interact closely with vegetation. Little is known about yeast diversity and function in forest soil ecosystems and their interactions with other biotic soil components, particularly in the mycorrhizosphere. We studied the diversity of yeasts inhabiting the bulk-soil, rhizosphere and ectomycorrhizosphere of a Nothofagus pumilio forest in Nahuel Huapi National Park (Bariloche, Argentina). Ectomycorrhizal infection was observed in all N. pumilio trees studied. A total of 126 yeast isolates were obtained, including 18 known and three possibly new species. Basidiomycetous yeasts were predominant in all soil fractions, and the most frequently isolated species was Cryptococcus podzolicus. Diversity indices and multivariate analyses were used to study and compare yeast communities in the bulk-soil, rhizosphere and ectomycorrhizosphere. Yeasts able to ferment glucose were found associated with the rhizosphere. Many of the recovered yeast species were associated with lignocelluloses compound degradation, which suggest that yeast plays an important role as a decomposer in these forest soils. Each soil fraction has a distinct yeast assemblage related to their physiologic capacities and soil nutrient availability. PMID:22067034

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

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    Marina Stein

    2002-10-01

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

  1. Ectoparasite occurrence associated with males and females of wild rodents Oligoryzomys flavescens (Waterhouse) and Akodon azarae (Fischer) (Rodentia: Cricetidae: Sigmodontinae) in the Punta Lara Wetlands, Argentina

    OpenAIRE

    Lareschi, Marcela

    2010-01-01

    The objective of this research was to study infestation parameters and indexes of ectoparasites associated with each sex of the wild rodents Oligoryzomys flavescens (Waterhouse) and Akodon azarae (Fischer) in the Punta Lara wetlands, Argentina. A trend towards higher mean abundance (MA) and ectoparasite specific richness was observed in males of O. flavescens whereas those values were similar for both A. azarae sexes. The prevalence of the following ectoparasites was significantly higher on m...

  2. El género Marielliottia (Hifomicetes, Ascomycota: Nuevo taxón asociado a la Micoflora del Grano de Trigo en Argentina The genus Marielliottia (Hyphomycetes, Ascomycota: a new taxon associated with wheat grain mycoflora in Argentina

    Directory of Open Access Journals (Sweden)

    Marina Sisterna

    2006-12-01

    Full Text Available Se registra por primera vez al género Marielliottia asociado a la micoflora del grano de trigo pan en Argentina. Marielliottia biseptata fue aislada de muestras de semillas provenientes de ensayos conducidos en la Estación Experimental Julio Hirschhorn (Los Hornos, Buenos Aires. Las semillas fueron sembradas en agar papa glucosado (APG e incubadas a 21± 1°C ; HR 80% bajo 12 h luz + UV; 12 h de oscuridad. La evaluación para el relevamiento de los hongos se realizó a los 5 y 8 días mediante una lupa estereoscópica. Para la identificación taxonómica, se examinaron las características micromorfológicas y de cultivo. Se realizaron inoculaciones sobre semillas con suspensión de esporas. Se presenta una descripción, ilustraciones, antecedentes e importancia del hongo aquí tratado.For the first time, the genus Marielliottia is registered on wheat grains in Argentina. This fungus was isolated from seed samples from trials conducted at the Estación Experimental Julio Hirschhorn (Los Hornos, Buenos Aires. The seeds were plated on potato dextrose agar (PDA and incubated at 21±1°C; HR 80% under fluorescent lamps supplemented with UV light during 12 h photoperiod. Evaluation was performed for the presence of fungi at 5 and 8 days with the aid of a stereoscopic microscope. For taxonomic identification, the micromorphology and cultures features were examined. As a result of this study, Marielliottia biseptata was determined and inoculations with spore suspension on seeds were carried out. A description, illustrations, antecedents and importance of the treated fungus are presented.

  3. Inventories and concentration profiles of 137Cs in undisturbed soils in the northeast of Buenos Aires Province, Argentina

    International Nuclear Information System (INIS)

    Inventories and vertical distribution of 137Cs were determined in La Plata region undisturbed soils, Argentina. A mean inventory value of 891 ± 220 Bq/m2 was established, which is compatible with the values expected from atmospheric weapon tests fallout. The study was complemented with pH, organic carbon fraction, texture and mineralogical soil analyses. Putting together Southern Hemisphere 137Cs inventory data, it is possible to correlate these data with the mean annual precipitations. The large differences in 137Cs concentration profiles were attributed to soil properties, especially the clay content and the pH values. A convection–dispersion model with irreversible retention was used to fit the activity concentration profiles. The obtained effective diffusion coefficient and effective convection velocity parameters values were in the range from 0.2 cm2/y to 0.4 cm2/y and from 0.23 cm/y to 0.43 cm/y, respectively. These data are in agreement with values reported in literature. In general, with the growth of clay content in the soil, there was an increase in the transfer rate from free to bound state. Finally, the highest transfer rate from free to bound state was obtained for soil pH value equal to 8. - Highlights: ► Inventories and vertical distribution of 137Cs were determined in undisturbed soils of La Plata city region, Argentina. ► The study was complemented with soil analyses of pH, organic carbon, texture and mineralogy. ► Inventory data were correlated with the mean annual precipitations. ► Concentration profile differences were attributed to soil properties, especially the clay content and the pH value. ► A convection–dispersion model with irreversible retention was used to fit the measured 137Cs concentration profiles.

  4. Rickettsia parkeri in Argentina

    OpenAIRE

    Nava, Santiago; Elshenawy, Yasmin; Eremeeva, Marina E.; Sumner, John W.; Mastropaolo, Mariano; Paddock, Christopher D.

    2008-01-01

    Clinical reports of an eschar-associated rickettsiosis in the Paraná River Delta of Argentina prompted an evaluation of Amblyomma triste ticks in this region. When evaluated by PCR, 17 (7.6%) of 223 questing adult A. triste ticks, collected from 2 sites in the lower Paraná River Delta, contained DNA of Rickettsia parkeri.

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

    Directory of Open Access Journals (Sweden)

    Dolores del C. Castro

    1994-08-01

    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%.

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

    Directory of Open Access Journals (Sweden)

    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%.

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

    Directory of Open Access Journals (Sweden)

    Daniela Pinheiro da Silva

    2014-04-01

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

  8. La Argentina inconclusa (2012) : Juan Archibaldo Lanús. Páginas: 719. El Ateneo, Buenos Aires.. ISBN: 9789500206662

    OpenAIRE

    Suárez Saponaro, Jorge Alejandro

    2013-01-01

    El autor recorre la historia argentina desde Mayo hasta el 2009, indagando sobre los factores que impidieron que la Argentina se transformara en un estado desarrollado, con políticas de largo plazo, previsible. En este excepcional trabajo político histórico se toca la política exterior argentina. (Párrafo extraído del texto a modo de resumen)

  9. 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

  10. Association of CAPN1 and CAST gene polymorphisms with meat tenderness in Bos taurus beef cattle from Argentina

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    Pablo Corva

    2007-01-01

    Full Text Available The activity of the calpains/calpastatin proteolytic system is closely related to the postmortem tenderization of meat. We investigated the association between beef tenderness and single nucleotide polymorphism (SNP markers on the CAPN1 gene (SNP316, alleles C/G; SNP530 alleles A/G and the CAST gene 3' untranslated region (SNP2870, alleles A/G. We sampled nine slaughter groups comprising 313 steers which had been reared in beef production systems in Argentina between 2002 and 2004 from crosses between Angus, Hereford and Limousin cattle. Minor allele frequencies for the markers were 0.27 to 0.46 (C, 0.02 to 0.18 (A, and 0.24 to 0.53 (A, respectively. The presence of CAPN1 markers had significant effects on meat shear force but no detectable effects were demonstrated for the CAST marker. The shear force of meat from steers with the SNP316 CC genotype was 11% lower than for the SNP316 CG genotype and 17% lower than for the SNP316 GG genotype. There were very few steers with the SNP530 AA genotype and, contrary to previous studies, meat from steers with the SNP530 GG genotype showed an 11.5% higher shear force than that from steers with the SNP530 GA genotype. Final body weight, carcass weight and rib eye area were not affected by any of the markers. These results support the concept that CAPN1 variants are associated with tenderness across a wide range of beef production systems.

  11. 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. PMID:25586510

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

    International Nuclear Information System (INIS)

    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 km2 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 km2 covered by these sediments in order to improve the understanding of the hydrological cycle. Since 2005, stable isotopes (2H, 18O) 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, 3H 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)

  13. Datafile: Argentina

    International Nuclear Information System (INIS)

    Consideration is given to modern state and prospects of development of nuclear power in Argentina, the role and tasks of regulating bodies, specific features of fuel cycle, international relations and nuclear safequards. The first NPP was put in operation in 70-s. Technical and economical indices of Atucha-1 NPP were among the best in the world till 1983, the total load factor was equal to 75%. Later on the load factor decreased down to 67% for different reasons. In 1988 the power plant was shutdown. Argentina cooperates with many countries including Brazil, Cuba, Turkey, Nigeria and Algeria. Negotiations about drawing up conditions of including Argentina NPPs into the system of nuclear safeguides are carried on with IAEA

  14. Argentina set for privatization

    International Nuclear Information System (INIS)

    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

  15. Genetic Characterization of Porcine Circovirus Type 2 from Pigs with Porcine Circovirus Associated Diseases in Argentina

    OpenAIRE

    Pereda, Ariel; Piñeyro, Pablo; Bratanich, Ana; Quiroga, María Alejandra; Bucafusco, Danilo; Craig, María Isabel; Cappuccio, Javier; Machuca, Mariana; Rimondi, Agustina; Dibárbora, Marina; Sanguinetti, Hector Ramón; Perfumo, Carlos Juan

    2011-01-01

    Porcine circovirus type 2 (PCV-2) has been associated with syndromes grouped by the term porcine circovirus associated diseases (PCVAD). The PCV-2 isolates have been grouped into two major groups or genotypes according to their nucleotide sequence of whole genomes and/or ORF-2: PCV-2b, which have, in turn, been subdivided into three clusters (1A–1C), and PCV-2a, which has been subdivided into five clusters (2A–2E). In the present study, we obtained 16 sequences of PCV-2 from different farms f...

  16. 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

    2016-06-01

    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. PMID:26892869

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

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    Darío Vezzani

    2002-09-01

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

  18. 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)

    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 km2 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.

  19. [Detection of anti-Brucella spp. antibodies in swine by agglutination techniques and indirect ELISA in the Buenos Aires and La Pampa provinces, Argentina].

    Science.gov (United States)

    Castro, H A; González, S R; Prat, M I; Baldi, P C

    2006-01-01

    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 (CYT), and lipopolysaccharide (LPS)-free cytosolic proteins (CP). Out of a total of 325 samples analyzed, 17.8% reacted positively to BPA, 13.8% to SAT, 8.0% to 2-ME, 21.0% to ELISA-CYT and 10.0% to ELISA-CP. These results agree with the few data available in our country and suggest that brucellosis screening should be extended to other regions. PMID:17037254

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

    International Nuclear Information System (INIS)

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

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

    Directory of Open Access Journals (Sweden)

    Pablo Cuervo

    2013-08-01

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

  2. Rafaela, Argentina

    OpenAIRE

    Omar Perotti

    2004-01-01

    Brinda información acerca de la provincia de Rafaela, Argentina. Da a conocer el planeamiento estratégico de Rafaela, los temas a resolver con el sector privado, así como las acciones para abordar la relación público-privada.

  3. 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.)

  4. Science and education between Spain and Argentina, 1910-1940. The university chairs of Buenos Aires «Institución Cultural Española»

    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.

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

    International Nuclear Information System (INIS)

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

  6. The impact of different cooling strategies on urban air temperatures: the cases of Campinas, Brazil and Mendoza, Argentina

    Science.gov (United States)

    Alchapar, Noelia Liliana; Cotrim Pezzuto, Claudia; Correa, Erica Norma; Chebel Labaki, Lucila

    2016-07-01

    This paper describes different ways of reducing urban air temperature and their results in two cities: Campinas, Brazil—a warm temperate climate with a dry winter and hot summer (Cwa), and Mendoza, Argentina—a desert climate with cold steppe (BWk). A high-resolution microclimate modeling system—ENVI-met 3.1—was used to evaluate the thermal performance of an urban canyon in each city. A total of 18 scenarios were simulated including changes in the surface albedo, vegetation percentage, and the H/W aspect ratio of the urban canyons. These results revealed the same trend in behavior for each of the combinations of strategies evaluated in both cities. Nevertheless, these strategies produce a greater temperature reduction in the warm temperate climate (Cwa). Increasing the vegetation percentage reduces air temperatures and mean radiant temperatures in all scenarios. In addition, there is a greater decrease of urban temperature with the vegetation increase when the H/W aspect ratio is lower. Also, applying low albedo on vertical surfaces and high albedo on horizontal surfaces is successful in reducing air temperatures without raising the mean radiant temperature. The best combination of strategies—60 % of vegetation, low albedos on walls and high albedos on pavements and roofs, and 1.5 H/W—could reduce air temperatures up to 6.4 °C in Campinas and 3.5 °C in Mendoza.

  7. Air pollution episodes associated with East Asian winter monsoons

    International Nuclear Information System (INIS)

    A dozen multi-day pollution episodes occur from October to February in Hanoi, Vietnam due to prolonged anticyclonic conditions established after the northeast monsoon surges (cold surges). These winter pollution episodes (WPEs) account for most of the 24-h PM10 exceedances and the highest concentrations of gaseous pollutants in Hanoi. In this study, WPEs were investigated using continuous air quality monitoring data and information on upper-air soundings and air mass trajectories. The 24-h pollutant concentrations are lowest during cold surges; concurrently rise thereafter reaching the highest levels toward the middle of a monsoon cycle, then decline ahead of the next cold surge. Each monsoon cycle usually proceeds through a dry phase and a humid phase as Asiatic continental cold air arrives in Hanoi through inland China then via the East China Sea. WPEs are associated with nighttime radiation temperature inversions (NRTIs) in the dry phase and subsidence temperature inversions (STIs) in the humid phase. In NRTI periods, the rush hour pollution peak is more pronounced in the evening than in the morning and the pollution level is about two times higher at night than in daytime. In STI periods, broad morning and evening traffic peaks are observed and pollution is as high at night as in daytime. The close association between pollution and winter monsoon meteorology found in this study for the winter 2003-04 may serve as a basis for advance warning of WPEs and for forecasting the 24-h pollutant concentrations. - Highlights: → Dozen pollution episodes from Oct. to Feb in Hanoi associated with anticyclones after monsoon surges. → 24-h concentrations of PM10, SO2, NO2, CO rise after surge and decline ahead of the next. → Episodes caused by nighttime radiation and subsidence inversions in dry and humid monsoon phases. → Distinct diurnal variations of pollutant concentrations observed in the two periods. → Close pollution-meteorology association serve as a basis

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

    Directory of Open Access Journals (Sweden)

    Susana Goldberg

    2004-12-01

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

  9. 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

  10. 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)

    OpenAIRE

    María S. Fontanarrosa; Patricia L. M. Torres; Mariano C. Michat

    2004-01-01

    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 ...

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

    Directory of Open Access Journals (Sweden)

    W. Kiessling

    2006-08-01

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

  12. Re-representing the city: waste and public space in Buenos Aires, Argentina in the late 2000s

    OpenAIRE

    Kate Parizeau

    2015-01-01

    This paper investigates a moment of shift in urban neoliberal governance strategies under the purview of a new municipal Chief of Government of Buenos Aires at the end of the 2000s: the introduction of a regime of public space that has had implications for the waste management sector (and particularly informal recyclers or cartoneros). I document government attempts to re-represent the city as a modern, hygienic centre that is receptive to investment and tourism, drawing on discursive framing...

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

    International Nuclear Information System (INIS)

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

  14. 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

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    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.

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

    Science.gov (United States)

    Rusticucci, Matilde; Kyselý, Jan; Almeira, Gustavo; Lhotka, Ondřej

    2016-05-01

    Heat waves are one of the main concerns related to the impacts of climate change, because their frequency and severity are projected to increase in a future climate. The objectives of this work are to study the long-term variability of heat waves over Argentina and to estimate recurrence probability of the most severe 2008 heat wave in Buenos Aires. We used three definitions of heat waves that were based on (1) daily maximum temperature above the 90th percentile (MaxTHW), (2) daily minimum temperature above the 90th percentile (MinTHW) and (3) both maximum and minimum temperatures above the corresponding 90th percentiles (EHW). The minimum length of a heat wave was 3 days, and the analysis was performed over the October-March period. Decadal values in Buenos Aires experienced clear increases in heat waves according to MinTHW and EHW, with the highest frequency for both in the 2001-2010 decade, but at other stations, combinations of different trends and decadal variability resulted in some cases in a decrease of extreme heat waves. In the north-western part of the country, a strong positive change in the last decade was found, mainly due to the increment in the persistence of MinTHW but also accompanied by increases in MaxTHW. In general, other stations show a clear positive trend in MinTHW and decadal variability in MaxTHW, with the largest EHW cases in the last decade. We also estimated recurrence probability of the longest and most severe heat wave in Buenos Aires (over 1909-2010, according to intensity measured by the cumulative excess of maximum daily temperature above the 90th percentile) that occurred from 3 to 14 November 2008, by means of simulations with a stochastic first-order autoregressive model. The recurrence probability of such long and severe heat wave is small in the present climate but it is likely to increase substantially in the near future even under a moderate warming trend.

  16. Cincuentenario de la Asociación Argentina de Dermatología: (1907-1957 Fiftieth anniversary of the Argentine Association of Dermatology: (1907-1957

    Directory of Open Access Journals (Sweden)

    J. L. Iribas

    2007-09-01

    Full Text Available Transcurrimos en el año del Centenario de la Asociación Argentina de Dermatología, con la intención de comprender cabalmente ese momento. Hallamos en su historia hechos trascendentes, que nos muestran el camino recorrido y nos orientan hacia la concreción de objetivos, en pro del engrandecimiento de la entidad como tal. La revisión del Cincuentenario Institucional, a través de la lectura del acto oficial y evento científico, que se acompañó con la presencia de un número importante de médicos, representativo de la Medicina y Dermatología Argentina, nos nutre de información, estimula a la revisión histórica e invita a trabajar por la vigencia y consolidación del patrimonio cultural-educativo de nuestro país con proyección internacional, que concentra la Asociación Argentina de Dermatología.We go through the year of the Anniversary of the Argentine Association of Dermatology with the intention of fully understanding this moment. Therefore, we have looked for important facts in its history, which show us the distance covered and guide us through the realization of goals, which exalt the institution as such. Through the reading of the first official ceremony and the scientific event which accompanied it -which was full of several important physicians representing Argentine foreign Medicine and Dermatology-, the review of the Fiftieth Institutional Anniversary nurtures us with information and stimulates us to work for the validity and consolidation of the educational and cultural heritage of our country that constitutes the Argentine Association of Dermatology.

  17. 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.

  18. Prevalencia y estacionalidad de la Pediculosis capitis en la población infante-juvenil de la region sanitaria, Buenos Aires, Argentina Prevalence and seasonal variation of Pediculosis capitis in the population under sixteen year of age of the health region of Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Dolores del C. Castro

    1994-08-01

    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%.The prevalence of the parasitic disease Pediculosis capitis was studied over a period of one year from 1-8-1992 to 31-7-1993, in Sanitary Region XI of the Buenos Aires province, Argentina which is composed of 15 districts located on the ENE, and in other areas under the influence of the Hospital Interzonal de Agudos, Especialidad Pediatría "Sup. Sor María Ludovica" de Plata, center of this Sanitary Region. A total number of 552 individuals of from medium to medium low social level of the child population of from 0 to 16 years of age were sampled at random over 52 consecutive weeks. All individuals who actually had the parasite at the time of examination were considered as positive for this disease. The results are expressed in terms of prevalence and its monthly and seasonal variations analyzed. Prevalence showed

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

    OpenAIRE

    Ricardo A Gutiérrez

    2012-01-01

    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 in...

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

    International Nuclear Information System (INIS)

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

  1. 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.

  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. [Correlation between results of the residency admission test and of pediatric certification test in Buenos Aires, Argentina].

    Science.gov (United States)

    Ferreira, Juan Pablo; Hamui, Magali; Paganini, Agustina; Torres, Fernando A; Ossorio, María Fabiana; Eiguchi, Kumiko; Ferrero, Fernando

    2016-01-01

    In the city of Buenos Aires (CABA), pediatric residents enter the residency program after taking a unified admission test. After completion of the program and passing a final test, the Universidad de Buenos Aires (UBA) provides a professional certification. The objective of this study is to determine if the results obtained in the residency admission test (RAT) and those of the professional certification test (PCT) correlated. This is a cross-sectional study, that included all subjects who passed the pediatrics RAT in CABA in 2004-2009, and that attended the pediatric PCT of the UBA. The score for each subject in both tests was obtained and the corresponding correlation was calculated. Results were divided in quintiles, and the proportion of subjects who improved their position in the PCT with respect to the RAT was calculated. Data from 303 subjects was obtained. The RAT showed a median of 45.0 (over 60 maximum) (IC-range: 43.0-48.7), and the PCT showed a median of 6 points (over 10 max.)(IC-range: 6-8). A significative correlation between results in RAT and PCT was observed (r = 0.37, p PCT, without differences between residents attending pediatric and general hospitals (45.6 vs. 31.5%; p = 0.1). In the case of pediatric residents, results of the residency admission test correlate with those obtained in the professional certification test. PMID:27295703

  4. Transferencia de nutrientes del área de pastoreo a la de ordeño, en tambos semiextensivos en Buenos Aires, Argentina Nutrient transference from paddocks to milking area in grazing dairy farms in Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    M. A. Herrero

    2006-12-01

    Full Text Available En tambos pastoriles, los nutrientes presentes en las excretas reingresan al sistema con una distribución irregular, donde el área de ordeño resulta un sector de gran acumulación. El objetivo fue cuantificar los excedentes de nitrógeno y fósforo transferidos anualmente al área de ordeño según tiempos de permanencia (TP, en sistemas de producción lechera bovina en la provincia de Buenos Aires. Los excedentes se cuantificaron en 17 establecimientos a partir del cálculo de balances realizado por diferencia entre ingresos (nutrientes aportados por la ración total de la vaca en ordeño y egresos (leche producida. Para establecer el excedente real transferido al área de ordeño se consideró el TP diario real de los animales (ordeño y alimentación, y para definir el excedente de transferencia mínimo se estableció un TP óptimo de 4 horas/día. El 88% de los tambos evaluados presentó un TP mayor al óptimo. La prueba de Wilcoxon arrojó diferencias significativas (pIn grazing dairy farm systems, nutrients present in excreta return to the system with irregular distributions, with great accumulation in the milking area. The objective of this study was to quantify excess Nitrogen and Phosphorus (N&P transferred annually to the milking area according to permanency time (PT in this area, in bovine milk production systems in the Buenos Aires Province. Nutrient excess was quantified in 17 farms, based on the N&P balances estimated by the difference between inputs (nutrients provided by the total ration for milking cows and outputs (milk production. To establish the real excess of the balance that is transferred to the milking area, the real daily PT of the animals (milking and feeding was considered. An optimum PT was established in 4 hours/day to define the minimum transferred excess. The 88% of the farms evaluated presented a PT over the optimum. The Wilcoxon test showed significant differences (p<0.05 between the central values in both

  5. Revisiting wintertime cold air intrusions at the east of the Andes: propagating features from subtropical Argentina to Peruvian Amazon and relationship with large-scale circulation patterns

    Science.gov (United States)

    Espinoza, Jhan Carlo; Ronchail, Josyane; Lengaigne, Matthieu; Quispe, Nelson; Silva, Yamina; Bettolli, Maria Laura; Avalos, Grinia; Llacza, Alan

    2013-10-01

    This study investigates the spatial and temporal characteristics of cold surges that propagates northward along the eastern flank of the Andes from subtropical to tropical South America analysing wintertime in situ daily minimum temperature observations from Argentina, Bolivia and Peru and ERA-40 reanalysis over the 1975-2001 period. Cold surges usually last 2 or 3 days but are generally less persistent in the southern La Plata basin compared to tropical regions. On average, three to four cold surges are reported each year. Our analysis reveals that 52 % of cold episodes registered in the south of La Plata basin propagate northward to the northern Peruvian Amazon at a speed of around 20 m s-1. In comparison to cold surges that do not reach the tropical region, we demonstrate that these cold surges are characterized, before they reach the tropical region, by a higher occurrence of a specific circulation pattern associated to southern low-level winds progression toward low latitudes combined with subsidence and dry condition in the middle and low troposphere that reinforce the cold episode through a radiative effect. Finally, the relationship between cold surges and atmosphere dynamics is illustrated for the two most severe cold intrusions that reached the Peruvian and Bolivian Amazon in the last 20 years.

  6. 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)

  7. 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. PMID:25264397

  8. 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

  9. Detección molecular de virus de encefalitis de Saint Louis en mosquitos de Buenos Aires, Argentina

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    Fernando J Beltrán

    2014-12-01

    Full Text Available Durante el mes de marzo de 2013 una población de palomas torcazas (Zenaida auriculata se instaló en una zona céntrica de la ciudad de Buenos Aires. Conociendo el rol que poseen estas aves como hospedadores competentes del virus de la encefalitis de Saint Louis (SLEV, fue colocada en el lugar una trampa de luz tipo CDC, a fin de realizar una vigilancia entomológica. Durante ese mes,fueron capturados 5 grupos de mosquitos (n = 48, 3 correspondieron a la especie Culex pipiens (n = 10 y 2 a Culex spp.(n = 38, no pudiéndose determinar en estos últimos con precisión la especie por encontrarse dañados. En un grupo de mosquitos Culex spp. se detectó el SLEV por técnicas moleculares. Posteriormente fue secuenciado y clasificado como perteneciente al genotipo III.

  10. [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. PMID:26625926

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

    OpenAIRE

    Margarita M. Alconada Magliano; Adriana Bussoni; Raúl Rosa; José Joel Carrillo Rivera

    2009-01-01

    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 r...

  12. 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

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    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

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

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    Natalia Allegrucci

    2007-07-01

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

  14. 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

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    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.

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

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    Ricardo A Gutiérrez

    2012-05-01

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

  16. 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

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    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

  17. Caracterización de especies y perfil de resistencia antimicrobiana en enterococos aislados de alimentos de origen animal provenientes de un área rural del centro de la provincia de Buenos Aires, Argentina

    OpenAIRE

    Delpech, Gastón

    2014-01-01

    El objetivo general de esta investigación fue caracterizar fenotípicamente y determinar el perfil de resistencia in vitro de especies de enterococos aislados de alimentos de origen animal provenientes de un área rural del Centro de la Provincia de Buenos Aires, Argentina. Durante el período 2009-2012 se analizaron N = 1937 muestras de carne picada (n = 1080), salamines artesanales (n = 642), quesos de vaca (n = 119), quesos de cabra (n = 42), leche de cabra (n = 30) y queso de oveja (n = 2...

  18. Espacios de encuentros y participación en busca de la construcción de un proceso de aprendizaje colectivo. : Estudio de caso: El sistema educativo del distrito de Punta Indio, provincia de Buenos Aires, Argentina

    OpenAIRE

    Rossi, Elisabet; Molinari, Gloria

    2012-01-01

    El presente trabajo se basa en una experiencia de extensión universitaria desarrollada en el territorio de Punta Indio, distrito de la provincia de Buenos Aires, Argentina, atendiendo a las necesidades detectadas en el sistema educativo distrital dependiente de la Dirección General de Cultura y Educación de la provincia mencionada. Se planteó como objetivo, el diseño de una estrategia local de construcción colectiva de desarrollo turístico en la región, a partir de la participación activa de ...

  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.

    OpenAIRE

    Silvia P. Pérez; Eduardo M. Sierra

    2006-01-01

    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 l...

  20. Presencia de salvado de cereal en "oréganos" comercializados en la ciudad de Buenos Aires (Argentina

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    Beatriz G. VARELA

    2009-01-01

    Full Text Available El género Origanum L. (Lamiaceae comprende varias especies, subespecies e híbridos cuyas partes usadas son las hojas y las sumidades floridas. El Código Alimentario Argentino admite diez por ciento de material extraño. El control de calidad realizado en oréganos comerciales reveló la presencia de salvado de cereal coloreado en varias muestras, en porcentajes considerables. En este trabajo se analizaron seis muestras de orégano comercializadas en la ciudad de Buenos Aires. Se tomaron porciones equivalentes al 10% del contenido neto, se separaron los componentes bajo lupa, se pesaron y se calcularon los porcentajes de los elementos separados. Cuatro muestras presentaron salvado de cereal que se identificó como salvado de trigo. Los porcentajes de salvado hallados fueron altos con respecto a los de hojas, brácteas y flores. Estos datos indican una marcada disminución de las partes usadas y la introducción de un elemento totalmente ajeno a la droga, lo cual afecta la calidad del producto comercializado.

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

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    Jorge Folino

    2012-12-01

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

  2. 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

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    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

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

    Energy Technology Data Exchange (ETDEWEB)

    Cenizo, M. M.

    2011-07-01

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

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

    International Nuclear Information System (INIS)

    Immunomodulatory effects of chemicals adsorbed to particles with aerodynamic diameter below 0.49 μm (PM0.5) collected in winter 2001 at three sampling points (industrial area [LPIn], traffic-influenced urban area [LPCi], and control area [LPCo]) of La Plata, Argentina, were investigated. The sampling of particulate matter was carried out with high-volume collectors using cascade impactors. PM0.5-adsorbed compounds were hexane-extracted by accelerated solvent extraction. For immunological investigations, human peripheral blood lymphocytes were activated by phytohemagglutinin and exposed to dimethyl-sulfoxide dilutions of PM0.5-extracts for 24 h. Vitality/proliferation was quantified using MTT, released interferon-γ (IFN-γ) and interleukin-4 (IL-4) by ELISA. Cytokine production but not vitality/proliferation was significantly suppressed by all of the highest extract concentrations. Generally, suppression of IFN-γ by PM0.5-extracts was stronger than those of IL-4. Based on administered mass of PM0.5, all extracts suppressed IFN-γ production nearly uniform. Contrary, LPCi-extracts exerted maximum IFN-γ suppression based either on air volume or regarding PM0.5-adsorbed PAH. Also the ranking of PM0.5-associated effects on IL-4 production differs in dependence of the chosen reference points, either mass or [μg/ml] or air volume [m3/ml] related dust quantities in cell culture. Based on the corresponding air volume, LPCi-extracts inhibited IL-4 production to the maximum extend, whereas suppression of IL-4 was comparable based on concentrations. This indicates that not only the disparate PM0.5-masses in air cause varying impacts, but also that disparities in PM0.5-adsorbed chemicals provoke different effects on immune responses and shifts in the regulatory balance that might have implications for allergy and cancer development

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

    International Nuclear Information System (INIS)

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

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

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    Marcos Plischuk

    2015-06-01

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

  7. 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

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    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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2009-01-15

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

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

    International Nuclear Information System (INIS)

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

  10. Política legislativa y trabajo en la horticultura del Área Metropolitana de Buenos Aires (Argentina: Orígenes y continuidades de la precarización laboral en la horticultura Legislative Policy and Work in Horticulture in the Metropolitan Area of Buenos Aires (Argentina.: Origins and Continuities of Labor Precarization in Horticulture

    Directory of Open Access Journals (Sweden)

    Matías García

    2011-04-01

    Full Text Available El artículo consta de un análisis de la legislación laboral agraria argentina en general, y del trabajo hortícola del área metropolitana bonaerense en particular. El periodo bajo estudio se circunscribe desde la sanción del Estatuto del Peón hasta la actualidad. Se concluye que el desconocimiento de la legislación laboral agraria, el no cumplimiento de la misma -como mayoritariamente ocurre con los asalariados- y la indefinición de algunos marcos regulatorios -como sucede con la mediería- es responsable de una prácticamente total precarización del trabajo en la horticultura bonaerense. La presencia de Trabajadores -en su mayoría migrantes bolivianos- en desigualdad de fuerzas ante los productores, con un gremio poco presente y un Estado bastante ausente, no hacen más que continuar damnificando a un sujeto tradicionalmente desprotegido.The article consists of an analysis of Argentinean legislation on agrarian work in general and horticultura! work in the Buenos Aires metiopolitan area in particular. The period spans the sanction of the Workers' Statute to the present. It concludes that ignorance of agrarian labor legislation and failure to comply with it, as usually happens with salaried worker, and the lack of definition of certain regulatory frameworks -as happens in sharecropping- is responsible for the virtually total precarization of work in Buenos Aires horticulture. The presence of workers, mosr of whom are Bolivian migrants, at a disadvantage in relation to producers and with an ineffectual trade union and an absent state, continues to victimize a traditionally unprotected subject.

  11. AIR LEAK SYNDROME AND A RARE CASES PRESENTATION OF PNEUMOPERICARDIUM ASSOCIATED WITH AIR EMBOLISM IN TTN BABY

    Directory of Open Access Journals (Sweden)

    Dinakara

    2014-04-01

    Full Text Available : Air leak syndromes are a group of clinically recognizable disorders produced by alveolar rupture and subsequent escape of air in to the tissue in which air is not normally present. All the clinical types of air leak syndrome originate in over distended alveoli, which ultimately rupture. Over distention is because of spontaneous vigorous respirations (usually larger term babies at birth, increased pressure of mechanical ventilator (PEEP, PIP vigorous Cardio Pulmonary resuscitation, air trapping in the presence of a ball valve mechanism, most of this air leaks occur spontaneously, but incidence increases with ventilator support, in some cases of collagen vascular diseases and associated renal problems.1 But in our study spontaneous pneumopericardium with air embolism a rare presentation and spontaneously recovered and followed up to one year. Timely radiological investigations including x-rays, USG chest, and ultra sound guided drainage of pneumopericardium with help of radiologist, play an important role in the management preventing morbidity and mortality.

  12. Means to improve access to justice and legally empower victims of domestic violence: An empirical legal study on legislation and legal offices in Buenos Aires, Argentina

    NARCIS (Netherlands)

    Marotta, J.

    2014-01-01

    The purpose of this study is to understand how recent legal reforms and the creation of legal offices in Argentina may improve access to justice and legally empower victims of domestic violence. The paper looks into the way the judicial system developed to provide suitable options for victims of dom

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

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    Cenizo, Marcos M.

    2011-06-01

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

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

  14. Investigating the association between birth weight and complementary air pollution metrics: a cohort study

    OpenAIRE

    Laurent, Olivier; Wu, Jun; Li, Lianfa; Chung, Judith; Bartell, Scott

    2013-01-01

    Abstract Background Exposure to air pollution is frequently associated with reductions in birth weight but results of available studies vary widely, possibly in part because of differences in air pollution metrics. Further insight is needed to identify the air pollution metrics most strongly and consistently associated with birth weight. Methods We used a hospital-based obstetric database of ...

  15. Ectoparasite occurrence associated with males and females of wild rodents Oligoryzomys flavescens (Waterhouse) and Akodon azarae (Fischer) (Rodentia: Cricetidae: Sigmodontinae) in the Punta Lara wetlands, Argentina.

    Science.gov (United States)

    Lareschi, Marcela

    2010-01-01

    The objective of this research was to study infestation parameters and indexes of ectoparasites associated with each sex of the wild rodents Oligoryzomys flavescens (Waterhouse) andAkodon azarae (Fischer) in the Punta Lara wetlands, Argentina. A trend towards higher mean abundance (MA) and ectoparasite specific richness was observed in males of O. flavescens whereas those values were similar for both A. azarae sexes. The prevalence of the following ectoparasites was significantly higher on males (P<0.05): Mysolaelaps microspinosus Fonseca (65.2%) and Hoplopleura travassosi Werneck (73.9%) on O. flavescens, and Ixodes loricatus Neumann (71.4%) on A. azarae. Only H. travassosi mean abundance was significantly higher on males (MA=44.1). Since I. loricatus and Hoplopleura spp. are involved in the transmission of pathogens that cause diseases in animals and humans, and whose reservoirs are rodent hosts, these results are epidemiologically important. PMID:21120393

  16. Patagonia Argentina

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    A.J. Acuña

    2008-01-01

    Full Text Available La zona central de la Patagonia, Argentina, se encuentra sometida a explotación petrolera y sus suelos se caracterizan por ser deficientes en nitrógeno. Esto causaría un efecto negativo en los procesos de atenuación natural que se desarrollan en los suelos contaminados con hidrocarburos. El objeto de este estudio fue determinar cual es el efecto de la deficiencia de nitrógeno sobre la biodegradación de los hidrocarburos en un suelo de la Patagonia, Argentina. Se trabajó con tres microcosmos a los que se les realizó tratamientos diferentes. En uno se monitoreo la atenuación natural del sistema, en otro la fertilización con nitrógeno (N, fósforo (P y potasio (K, y en el último la fertilización con P y K. Durante el seguimiento se determinaron mineralización y medición de hidrocarburos, y se realizaron recuentos bacterianos y determinación de nitrato, nitrito y amonio. Los resultados indican que es posible la biodegradación de hidrocarburos en el suelo deficiente de nitrógeno de la Patagonia estudiado en tiempos mas prolongados que en aquellos que se realiza una fertilización con nitrógeno. El nitrógeno necesario para el proceso sería obtenido por los microorganismos del suelo por fijación biológica.

  17. Salmonella enteritidis in Argentina.

    Science.gov (United States)

    Caffer, M I; Eiguer, T

    1994-01-01

    A significant increase in the number of isolations of Salmonella enteritidis has been observed in Argentina since 1986. Outbreaks of foodborne diseases in humans were associated with the consumption of raw or undercooked hens' eggs. Between 1986 and the first 6 months of 1993 there were 150 outbreaks reported, affecting more than 6000 persons. A total of 71.3% of these outbreaks were confirmed by stool cultures, and 47.3% by bacteriological study of the food implicated in the outbreak. A permanent surveillance of salmonellosis is imperative, taking into account the persistence of Salmonella enteritidis isolations in sporadic cases and in new outbreaks. PMID:8155472

  18. Gastropods Associated with Fossil Traces from Yacoraite Formation (Maastrichtian-Danian), and its Paleoenvironmental Significance, Jujuy,Northwestern Argentina

    Institute of Scientific and Technical Information of China (English)

    Carlos A. C(O)NSOLE GONELLA; Miguel GRIFFIN; Florencio G. ACE(N)OLAZA

    2009-01-01

    We present results tending to characterize the new records of invertebrates from the Yacoraite Formation (Maastrichtian-Danian). The fossils reported come from two stratigraphic sections exposed in the surroundings of Maimara and Jueya, province of Jujuy, northwestern Argentina. The selection was based on geological and paleontological evidence. The recovered fossils include gastropods and invertebrate fossil traces, including Planolites, Skolithos and Gastrochanoelites ichnogenns. As result of our review, we discussed the possibility of assigning the analyzed gastropods to the family Zygopleuridae (gene. et. sp. indet.), as an approximation to the taxonomic resolution of this fossil fauna. The trace fossils were assigned to the archetypical Glossifungites ichnofacies. The study of the fossil assemblage allowed us to defme a shallow depositional environment, characteristic of a marine context with high-energy conditions.

  19. Association of Ambient Air Quality with Pulmonary Function of Youngster Footballers

    OpenAIRE

    Das, Paulomi; Chatterjee, Pinaki

    2013-01-01

    Purpose Air pollution has remained a major health concern in Kolkata. The present study was carried out to analyze the association between the levels of air pollutants and pulmonary function of youngster footballers living in two different air pollutant zones of Kolkata, West Bengal. Methods Air pollution data of the two ambient air quality-monitoring stations located at Rabindrabharati and Victoria Memorial was collected for the period from January 2012 to March 2012. Study was conducted on ...

  20. Investigating the association between birth weight and complementary air pollution metrics: A cohort study

    OpenAIRE

    Laurent, O; Wu, J.; Li, L.; Chung, J.; Bartell, S

    2013-01-01

    Background: Exposure to air pollution is frequently associated with reductions in birth weight but results of available studies vary widely, possibly in part because of differences in air pollution metrics. Further insight is needed to identify the air pollution metrics most strongly and consistently associated with birth weight. Methods. We used a hospital-based obstetric database of more than 70,000 births to study the relationships between air pollution and the risk of low birth weight (LBW,

  1. Investigating the association between birth weight and complementary air pollution metrics: a cohort study

    OpenAIRE

    Laurent, Olivier; Wu, Jun; Li, Lianfa; Chung, Judith; Bartell, Scott

    2013-01-01

    Background Exposure to air pollution is frequently associated with reductions in birth weight but results of available studies vary widely, possibly in part because of differences in air pollution metrics. Further insight is needed to identify the air pollution metrics most strongly and consistently associated with birth weight. Methods We used a hospital-based obstetric database of more than 70,000 births to study the relationships between air pollution and the risk of low birth weight (LBW,

  2. 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

  3. Caracterización citomorfomérica de Anabaena circinalis (Cyanophyta en una proliferación masiva en el embalse Paso de Las Piedras (Provincia de Buenos Aires, Argentina Cytomorphometric characterization of Anabaena circinalis (Cyanophyta from a bloom in the lake Embalse Paso de las Piedras (Buenos Aires Province, Argentina

    Directory of Open Access Journals (Sweden)

    Gimena Argañaraz Bonini

    2005-07-01

    Full Text Available El objetivo principal de este trabajo fue realizar un tratamiento estadístico de los caracteres morfológicos de los individuos de Anabaena circinalis presentes en una proliferación masiva del Embalse Paso de las Piedras (Buenos Aires, Argentina cuya identidad se determinó mediante técnicas moleculares. Se plantearon como objetivos específicos de este trabajo: 1 analizar las dimensiones celulares y parámetros estadísticos de centralización y dispersión; 2 analizar la posición relativa de los heterocistos y las acinetas en el tricoma; 3 analizar la composición porcentual de los distintos tipos de células del tricoma; 4 analizar relación entre valores promedio del ancho y largo celular; y 5 analizar la variación del largo celular en células vegetativas de diferentes tricomas. Los resultados obtenidos sugieren que en condiciones eutróficas: 1 es posible caracterizar a los individuos de Anabaena circinalis mediante parámetros estadísticos referidos a las medidas de las células vegetativas de los tricomas, 2 el criterio basado en los caracteres morfológicos de las acinetas inmaduras no debe ser utilizado para ese fin, dadas la no-maduración de las acinetas en condiciones eutróficas y la tendencia a la uniformidad morfométrica entre las células vegetativas y las acinetas inmaduras, y 3 los heterocistos y las células vegetativas, uniformemente esféricos, sólo pueden diferenciarse entre sí por su tamaño y no por su forma, mientras que ambos a su vez pueden diferenciarse de las acinetas ovoidales por su forma. En cuanto al análisis de la varianza del largo de las células vegetativas, los resultados obtenidos confirman que todos los tricomas pertenecen a una misma especie.The principal goal of the work was to make a statistical analysis of the morphology of individuals of Anabaena circinalis growing in a bloom in Embalse Paso de las Piedras (Provincia de Buenos Aires, Argentina, identified by a gene probe for this species

  4. Place-Based Stressors Associated with Industry and Air Pollution

    OpenAIRE

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

    2014-01-01

    Exposure to air pollution and its sources is increasingly viewed as a psychosocial stress, however its nature is not understood. This article explores the role of the concept of place on risk perception and community stress within data collected from eight focus groups in Philadelphia, USA. Discussions focused on air pollution, a nearby oil refinery, health, and a proposal for air monitoring. We present a framework of place-based elements of risk perception that includes place identity, stigm...

  5. PARTICLES ASSOCIATION STUDY OF A BORATE SAMPLE FROM SIJES DISTRICT, ARGENTINA ESTUDIO DE LA ASOCIACIÓN DE PARTÍCULAS DE UNA MUESTRA DE BORATOS DEL DISTRITO SIJES, ARGENTINA

    Directory of Open Access Journals (Sweden)

    Rosa M Torres Sánchez

    2007-04-01

    Full Text Available The increasing range of borate uses, mainly in the ceramic frit market, led borate producers to improve competitiveness through concentration and/or purification steps in the mill circuit as well as in the characterization of high content B2O3 minerals. Minerals coming from Sijes, Salta Province, Argentina, mainly identified as colemanite and hydroboracite, with 50.84 % and 50.54 % B2O3 respectively, are potentially interesting from an industrial point of view. The desliming purification technique in hydrocyclones used to upgrade B2O3 and downgrade undesirable impurities to the borate market (Rietveld method mainly iron oxides, chlorides and sulphates not only eliminates slimes but it also generates pores, through a decrease of the specific surface of the particles. Two samples under different purification steps were analyzed: deslimed and without desliming. The chemical and mineralogical analyses of both samples indicate a decreasing percentage of colemanite, smectite and illite in the deslimed sample with a small increase of hibroracite. The parameters of surface electric charge (PZC and IEP match the observations made with the electronic microscopy, reveal mineral associations only in the sample without desliming.La ampliación de los mercados que utilizan borato, principalmente el de la producción de fritas cerámicas, ha llevado a los productores de dicho mineral a mejorar su competitividad a través de su concentración y/o purificación tanto por medio de su molienda así como mediante la caracterización de minerales con alto contenido en B2O3. En los minerales provenientes de Sijes, Provincia de Salta, Argentina, se han identificado principalmente colemanita e hidroboracita, con 50.84% y 50.54% en B2O3, respectivamente, lo cual los hace potencialmente interesantes para su utilización industrial. La técnica de purificación por deslamado en hidrociclón para purificar B2O3, permite la disminución de impurezas indeseables para la

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

    International Nuclear Information System (INIS)

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2008-11-15

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

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

    International Nuclear Information System (INIS)

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

  10. Análisis de cambios de uso del suelo en la Delegación Municipal de Ingeniero White (Buenos Aires, Argentina: aplicación de geotecnologías

    Directory of Open Access Journals (Sweden)

    Andrea Marcela Silva Schweitzer

    2014-01-01

    Full Text Available La Delegación Municipal de Ingeniero White se encuentra en la provincia de Buenos Aires, Argentina. Este trabajo analiza la dinámica de cambio de uso del suelo en el área mencionada durante el periodo 1967-2012. La metodología empleada se basa, por un lado, en el desarrollo del proceso cartográfico necesario para la identificación de los usos del suelo a escala 1:50.000 para ambos años y, por otro, en la aplicación del método de tabulación cruzada en un entorno SIG con el fin de evaluar los cambios ocurridos en el lapso de 45 años. Los resultados muestran un importante crecimiento del uso residencial y poca variación en el resto de los usos.

  11. Análisis de cambios de uso del suelo en la Delegación Municipal de Ingeniero White (Buenos Aires, Argentina): aplicación de geotecnologías

    OpenAIRE

    Andrea Marcela Silva Schweitzer; María Laura Rubio Farinelli

    2014-01-01

    La Delegación Municipal de Ingeniero White se encuentra en la provincia de Buenos Aires, Argentina. Este trabajo analiza la dinámica de cambio de uso del suelo en el área mencionada durante el periodo 1967-2012. La metodología empleada se basa, por un lado, en el desarrollo del proceso cartográfico necesario para la identificación de los usos del suelo a escala 1:50.000 para ambos años y, por otro, en la aplicación del método de tabulación cruzada en un entorno SIG con el fin de evaluar los c...

  12. Efecto del sistema de iniciación y del acolchado del suelo sobre la producción de melón en el sur de la provincia de Buenos Aires, Argentina

    OpenAIRE

    Cantamutto, Miguel A.; Ayastuy, Miren Edurne; Kroeger, I.; Elisei, Victorio; Marinangeli, Pablo

    2001-01-01

    Con el fin de evaluar el rendimiento semanal y total en cultivos de melón (Cucumis melo L.) iniciados por siembra directa y trasplante, en suelo desnudo o con acolchado plástico (negro o cristal), se realizaron ensayos en la zona sur de la provincia de Buenos Aires, Argentina, durante las campañas agrícolas 1994/95 y 1995/96.Se utilizó el híbrido "Magnum 45" del tipo reticulado, cultivado en camellones a una densidad teórica de 6.897 pl.ha-1 y riego por surco. Los sistemas de iniciación ensay...

  13. Características clínicas y valoración geriátrica en adultos mayores con neumonía de un hospital de Buenos Aires, Argentina

    OpenAIRE

    Martín Regueiro; Cecilia Homar; Ricardo Ovejero; Antonio Liu; Tomás Pieroni; Romina Basilico

    2013-01-01

    Con el objetivo de determinar las características clínicas y geriátricas en pacientes adultos mayores con neumonía, en un hospital de Buenos Aires en Argentina, se realizó un estudio transversal en el 2010, con 66 pacientes hospitalizados por neumonía. La edad media fue de 82 años, siendo el 54,5% hombres. El 47,0% de los ingresos fueron por neumonía adquirida en la comunidad. En cuanto a la valoración funcional el 31,8% eran dependientes para las actividades básicas de la vida diaria y 69,4%...

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

    Directory of Open Access Journals (Sweden)

    Rosario E. FERNÁNDEZ TERÁN

    2011-07-01

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

  15. Magmatic evolution of pre-ore volcanics and porphyry intrusives associated with the Altar Cu-porphyry prospect, Argentina

    Science.gov (United States)

    Gatzoubaros, M.; von Quadt, A.; Gallhofer, D.; Rey, R.

    2014-11-01

    Altar is a Cu-porphyry deposit related to several small plagioclase porphyry intrusions of the late Miocene formed on the margin of the Flat-Slab segment along the Andean Cordillera in north-west Argentina. New stratigraphic and structural mapping supported by geochemistry and geochronology of pre-ore volcanics at Altar has revealed that a period of ˜6-7 Ma of volcanism during the late Oligocene-early Miocene formed ˜4000 m of volcano-stratigraphic succession making up the Pachón Formation. It represents a period dominated by explosive to effusive eruption in a dynamic arc basin with local ash fall and flow deposition in lacustrine and fluvial sites. Volcanism is typified by medium- to high-K calc-alkaline arc magmatism with a shift from mafic compositions at the base to felsic rocks at the top of the formation containing zircons aged 21.9 ± 0.2 Ma (2 Std.Dev, U-Pb). A clear geochemical separation exists between early Miocene pre-ore volcanics that show signatures akin to non-adakitic, normal arc, extensional tectonic settings conducive of chemical differentiation at shallow crustal levels and correlate with intra-regional Abanico and Farellones Formations; and the middle to late-Miocene Cu-mineralised porphyry intrusions. After a break of ˜9 Ma in the geological record at Altar, these Cu-fertile bodies are emplaced entirely within the Pachón Rhyolite and represent adakite-like magmas with fractionation trends evolving from a lower crustal MASH zone. This distinction is controlled by a change from an extensional to compressive tectonic regime in the region during the middle Miocene in which magmas were stalled in the lower crust for an extended period, subsequently became enriched in metals and then formed several Cu-porphyry bodies which were emplaced during a relatively short period towards the late Miocene.

  16. Variation in worm assemblages associated with Pomacea canaliculata (Caenogastropoda, Ampullariidae) in sites near the Río de la Plata estuary, Argentina.

    Science.gov (United States)

    Damborenea, C; Brusa, E; Paola, A

    2006-12-01

    Pomacea canaliculata is a common gastropod in freshwater habitats from Central and Northern Argentina, extending northwards into the Amazon basin. Several Platyhelminthes have been reported associated to P. canaliculata, sharing an intimate relationship with this gastropod host. The objectives of this study were to describe the symbiotic species assemblages associated to P. canaliculata in the study area, and to disclose differences among them. Samples were taken in three typical small streams and one artificial lentic lagoon, all connected with the Rio de la Plata estuary. The 81.53% were infested with different symbiotic (sensu lato) species. Among the Platyhelminthes, the commensal Temnocephala iheringi Haswell, 1893 was highly prevalent in all samples, always in the mantle cavity. Four trematode taxa were recognized: (a) metacercariae of Echinostoma parcespinosum Lutz, 1924 in the mantle cavity and sporocysts in the digestive gland; (b) metacercariae of Dietziella egregia (Dietz, 1909) in the pericardial cavity; (c) unidentified xiphidiocercariae and (d) unidentified sporocysts and furcocercariae in the digestive gland. Nematode larvae and oligochaetes were found in two localities in the mantle cavity. Among the Annelida, Helobdella ampullariae Ringuelet, 1945 was found in the mantle cavity and lung of snails only from one locality. Our results show that although some of the symbionts are present in all localities, others are restricted to some particular ones, whether in their absolute numbers or in their relative abundance. Thus, each hosting population at the studied localities may be defined by the particular combination of symbionts that bears. PMID:17375466

  17. Susana Romanos de Tiratel, Itinerarios bibliográficos en la literatura argentina : Buenos Aires, Instituto de Investigaciones Bibliotecológicas, Facultad de Filosofía y Letras, Universidad de Buenos Aires, 2005, Cuadernos de Bibliotecología 20, 204 páginas

    OpenAIRE

    Bosoer, Sara

    2007-01-01

    Un viaje a través de un mapa bibliográfico de la literatura argentina es lo que propone este trabajo de Susana Romanos de Tiratel, directora del Instituto de Investigaciones Bibliotecológicas (INIBI) dependiente de la Facultad de Filosofía y Letras de la Universidad de Buenos Aires; docente de dicha universidad y miembro del Consejo Consultivo de la Biblioteca Nacional. La autora, que también dirige la revista Información, cultura y sociedad, ha publicado además, una Guía de fuentes de inform...

  18. Alejandro Cataruzza. Historia de la Argentina 1916-1955 : Buenos Aires, Siglo XXI, 2009 (264 páginas).

    OpenAIRE

    Gardinetti, Juan P.

    2011-01-01

    Se trata la obra, esencialmente, de una historia política, social y cultural de la Argentina del período que va desde el acceso del radicalismo al poder hasta la caída de Perón con el golpe de estado de septiembre de 1955, si bien contiene un primer capítulo a guisa de introducción (dedicado a la etapa 1880-1916), donde se analiza la crisis de la llamada república conservadora y su salida político- institucional a través de la ley Sáenz Peña.

  19. Los recursos hídricos subterráneos en el desarrollo socioeconómico de la provincia de Buenos Aires, Argentina

    OpenAIRE

    González, Nilda; Álvarez, María del Pilar; Trovatto, María Marta; Solero, Claudia

    2008-01-01

    Se analiza la alta gravitación que históricamente ha tenido el aprovechamiento de los recursos hídricos subterráneos en el desarrollo socioeconómico de la provincia con mayor producto interno de Argentina, desde el punto de vista de su aplicación para satisfacer los requerimientos de las actividades usuarias domésticas, industriales, y agropecuarias, las más importantes volumétricamente. En un territorio de 307571 km2 con un clima que va desde sub-húmedo - húmedo en el Noreste (precipitación ...

  20. 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...

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

    OpenAIRE

    Leonardo Federico; Romeu Gomez; Paola Piacenza

    2010-01-01

    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 c...

  2. AIRE-induced apoptosis is associated with nuclear translocation of stress sensor protein GAPDH

    International Nuclear Information System (INIS)

    Highlights: ► AIRE induces apoptosis in epithelial cells. ► CARD domain of AIRE is sufficient for apoptosis induction. ► AIRE induced apoptosis involves GAPDH translocation to the nuclei. ► Deprenyl inhibits AIRE induced apoptosis. -- Abstract: AIRE (Autoimmune Regulator) has a central role in the transcriptional regulation of self-antigens in medullary thymic epithelial cells, which is necessary for negative selection of autoreactive T cells. Recent data have shown that AIRE can also induce apoptosis, which may be linked to cross-presentation of these self-antigens. Here we studied AIRE-induced apoptosis using AIRE over-expression in a thymic epithelial cell line as well as doxycycline-inducible HEK293 cells. We show that the HSR/CARD domain in AIRE together with a nuclear localization signal is sufficient to induce apoptosis. In the nuclei of AIRE-positive cells, we also found an increased accumulation of a glycolytic enzyme, glyceraldehyde-3-phosphate (GAPDH) reflecting cellular stress and apoptosis. Additionally, AIRE-induced apoptosis was inhibited with an anti-apoptotic agent deprenyl that blocks GAPDH nitrosylation and nuclear translocation. We propose that the AIRE-induced apoptosis pathway is associated with GAPDH nuclear translocation and induction of NO-induced cellular stress in AIRE-expressing cells.

  3. AIRE-induced apoptosis is associated with nuclear translocation of stress sensor protein GAPDH

    Energy Technology Data Exchange (ETDEWEB)

    Liiv, Ingrid, E-mail: ingrid.liiv@ut.ee [Molecular Pathology, Institute of General and Molecular Pathology, University of Tartu, Tartu (Estonia); Haljasorg, Uku; Kisand, Kai; Maslovskaja, Julia; Laan, Martti; Peterson, Paert [Molecular Pathology, Institute of General and Molecular Pathology, University of Tartu, Tartu (Estonia)

    2012-06-22

    Highlights: Black-Right-Pointing-Pointer AIRE induces apoptosis in epithelial cells. Black-Right-Pointing-Pointer CARD domain of AIRE is sufficient for apoptosis induction. Black-Right-Pointing-Pointer AIRE induced apoptosis involves GAPDH translocation to the nuclei. Black-Right-Pointing-Pointer Deprenyl inhibits AIRE induced apoptosis. -- Abstract: AIRE (Autoimmune Regulator) has a central role in the transcriptional regulation of self-antigens in medullary thymic epithelial cells, which is necessary for negative selection of autoreactive T cells. Recent data have shown that AIRE can also induce apoptosis, which may be linked to cross-presentation of these self-antigens. Here we studied AIRE-induced apoptosis using AIRE over-expression in a thymic epithelial cell line as well as doxycycline-inducible HEK293 cells. We show that the HSR/CARD domain in AIRE together with a nuclear localization signal is sufficient to induce apoptosis. In the nuclei of AIRE-positive cells, we also found an increased accumulation of a glycolytic enzyme, glyceraldehyde-3-phosphate (GAPDH) reflecting cellular stress and apoptosis. Additionally, AIRE-induced apoptosis was inhibited with an anti-apoptotic agent deprenyl that blocks GAPDH nitrosylation and nuclear translocation. We propose that the AIRE-induced apoptosis pathway is associated with GAPDH nuclear translocation and induction of NO-induced cellular stress in AIRE-expressing cells.

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

    Science.gov (United States)

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

    2014-07-01

    Exposure to air pollution and its sources is increasingly viewed as a psychosocial stress, however its nature is not understood. This article explores the role of the concept of place on risk perception and community stress within data collected from eight focus groups in Philadelphia, USA. Discussions focused on air pollution, a nearby oil refinery, health, and a proposal for air monitoring. We present a framework of place-based elements of risk perception that includes place identity, stigma and social control. Our findings indicate that air pollution contributes to physical and psychosocial conditions that act as community-level social stressors. Findings also suggest that programs which seek to change behaviors and gather or spread information on issues such as pollution and other environmental concerns will be challenged unless they directly address: (1) the public׳s identification with a place or industry, (2) immediate environmental stressors such as abandonment, waste and odors, and (3) public perceptions of lack of social control and fear of displacement. PMID:24721738

  5. Associations between Parents' Perceived Air Quality in Homes and Health among Children in Nanjing, China.

    Directory of Open Access Journals (Sweden)

    Hua Qian

    Full Text Available The increasing prevalence of respiratory diseases in Chinese children has focused attention on indoor environmental quality. We investigated associations between perceived air quality in domestic environments and children's allergic diseases with a questionnaire survey study. A total of 4017 children aged 1-8 years old from 23 kindergartens in urban, suburban and industrial areas in Nanjing were randomly recruited for this study. Parents' perceived odors, including stuffy odor, unpleasant odor, pungent odor, moldy odor, humid air and dry air were found to be associated with asthma, wheeze, dry cough and rhinitis (P < 0.05. Both perceived dry and humid air were found to be positively associated with dampness indices, and we present evidence that the sensation of dryness may not be due to the actual indoor relative humidity, but rather to indoor air irritants. Parents' perception of odors and relative humidity may be indicators of environment pollutants, which are likely the real factors associated with children's allergic diseases.

  6. Proyecto "Encuesta a los Servicios Alimentarios de Comedores Escolares Estatales" (PESCE: alcance de las metas nutricionales de las prestaciones alimentarias de los comedores escolares de Gran Buenos Aires, Argentina Proyect: "Survey of State School meal service" (PESCE: Scope of Food Supply Nutritional Goals in State School in Gran Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Susana Buamden

    2010-03-01

    Full Text Available Objetivo: Evaluar el alcance de las metas nutricionales de las prestaciones alimentarias de los comedores escolares estatales de la región Gran Buenos Aires, Argentina, en 2007. Materiales y Métodos: Unidad de análisis: prestación alimentaria de todas las escuelas estatales de la región. Metas nutricionales: elaboradas por prestación, para energía, nutrientes y alimentos críticos por grupo etario (Grupo 1: 3 años; Grupo 2: 4-8 años; Grupo 3: 9-14 años. Encuesta ad-hoc: administrada por nutricionistas. Muestreo: aleatorio estratificado bietápico; total 301 escuelas, 299 relevadas. Análisis de datos: sistema informático ad-hoc. Resultados: Desayuno/Merienda: el aporte de leche fue menor a la meta para todos los grupos etarios. La ración brindada al Grupo 1 alcanzó la meta para todos los nutrientes excepto el Calcio. Para el Grupo 2 la ración brindada solo fue aceptable en zinc y hierro. El Grupo 3 no alcanzó ninguna meta. Almuerzo: para todos los grupos etarios, existió un aporte calórico por debajo de la meta y exceso proteico. Para el Grupo 1, la ración ofrecida superó las metas de hierro y zinc; y no alcanzó la de Vitamina A. Para el Grupo 2, los aportes de zinc y vitamina C superaron la meta; calcio, hierro y vitamina A presentaron aportes bajos. Para el Grupo 3, solo se alcanzó la meta en vitamina C. El aporte de carne solo superó las metas establecidas para el grupo 1. El aporte de fruta superó la meta para el grupo 1 y 2, y fue aceptable para el grupo 3. El Desayuno/Merienda para Grupo 2 aportó más kcal en las escuelas que no brindaban almuerzo. Conclusiones: El Desayuno/Merienda solo alcanzó las metas nutricionales (excepto calcio en el grupo de 3 años. En Almuerzo, se observó aporte calórico por debajo de la meta y exceso proteico para todos los grupos etarios.Objective: To assess the scope of food supply nutritional goals in state school in the area of Gran Buenos Aires, Argentina, in 2007. Materials and

  7. Redescription of the female of Microcerella acrydiorum (Diptera: Sarcophagidae) and new records from Argentina Redescripción de la hembra de Microcerella acrydiorum (Diptera: Sarcophagidae) y nuevos registros para la Argentina

    OpenAIRE

    Mariluis, Juan C.

    2005-01-01

    A redescription and an illustration of female Microcerella acrydiorum (Weyenbergh) is given, and new records from Santa Fe province, Argentina are provided. Microcerella chaetosa (Townsend) is recorded for the first time in Argentina. New records of Microcerella erythropyga (Lopes) from Buenos Aires and Córdoba provinces, Argentina are provided.Se redescribe e ilustra la hembra de Microcerella acrydiorum (Weyenbergh) y se aporta un nuevo registro para la provincia de Santa Fe, Argentina. Micr...

  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. Association of geographical distribution of air quality index and type 2 diabetes mellitus in Isfahan, Iran

    OpenAIRE

    Tahmasebi, Azadeh; Amin, Mohammad Mehdi; Poursafa, Parinaz; Iraj, Bijan; Sadeghiyan, Hamidreza; Kelishadi, Roya; Sadeghian, Babak

    2015-01-01

    Objectives: Air pollution is a hazardous environmental problem with several adverse health effects including its impact on the development of chronic diseases as diabetes mellitus. This study aimed to investigate the association of geographical distribution of air quality index (AQI) and type 2 diabetes mellitus in an air-polluted city by using geographic information system (GIS). Methods: This cross-sectional study was conducted in Isfahan, Iran. The records that have been registered from 20...

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

    DEFF Research Database (Denmark)

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

    2016-01-01

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

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

    International Nuclear Information System (INIS)

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

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

    Energy Technology Data Exchange (ETDEWEB)

    Kruger, A.A.

    1995-01-01

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

  13. A critical review of studies of the association between demands for hospital services and air pollution.

    Science.gov (United States)

    Lipfert, F W

    1993-07-01

    Studies of the associations between air pollution and hospital admissions and emergency room use are reviewed, including studies of air pollution episodes, time-series analyses, and cross-sectional analyses. These studies encompass a variety of methods of analysis and levels of air quality. Findings from all three types of studies were generally consistent in that almost all of the studies reviewed found statistically significant associations between hospital use and air pollution; this unanimity may have resulted in part from publication bias. These associations were characterized by elasticities of the order of 0.20; i.e., a 100% change in air pollution was associated with a change in hospital use of about 20%, for specific diagnoses. Respiratory diagnoses were emphasized by most studies; cardiac diagnoses were included in five of them. The air pollutants most often associated with changes in hospital use were particulate matter, sulfur oxides, and oxidants. Apart from the major air pollution episodes, there was no obvious link between air pollution level and the significance or magnitudes of the associations. Long-term indicators of hospitalization appeared to also be influenced by medical care supply factors, including the numbers of beds and physicians per capita. These nonpathological causal factors could also have influenced the findings of the time-series studies by introducing extraneous factors in the patterns of admissions. Although consistent associations have been shown between hospital use and air pollution, further research is required to distinguish among potentially responsible pollutants and to deduce specific dose-response relationships of general utility. PMID:8243395

  14. Argentina Welcomes Chinese Enterprises

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    @@ On July 13,China-Argentina Entrepreneur Luncheon Meeting was held in Beijing.Cristina Fernandez de Kirchner,President of Argentina,Hui Liangyu,Vice Prime Minister of China and Wan Jifei,President of CCPIT attended the meeting.

  15. Association between gaseous ambient air pollutants and adverse pregnancy outcomes in Vancouver, Canada.

    OpenAIRE

    Liu, Shiliang; Krewski, Daniel; Shi, Yuanli; Chen, Yue; Richard T. Burnett

    2003-01-01

    The association between ambient air pollution and adverse health effects, such as emergency room visits, hospitalizations, and mortality from respiratory and cardiovascular diseases, has been studied extensively in many countries, including Canada. Recently, studies conducted in China, the Czech Republic, and the United States have related ambient air pollution to adverse pregnancy outcomes. In this study, we examined association between preterm birth, low birth weight, and intrauterine growt...

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

    Czech Academy of Sciences Publication Activity Database

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

    -, - (2016). 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: 2.015, year: 2014

  17. Mycobiota associated with larval mines of Thrypticus truncatus and T. sagittatus (Diptera: Dolichopodidae) on water hyacinth, Eichhornia crassipes, in Argentina.

    Science.gov (United States)

    Thrypticus truncatus is a candidate for biocontrol of water hyacinth; the larvae of this dipteran mine in the petioles and feed on the phloem in the vascular bundles. The mycobiota associated with T. truncatus and T. sagittatus mines was investigated during two surveys undertaken in the spring and a...

  18. Determination the atmospheric fallout in the Argentina Republic

    International Nuclear Information System (INIS)

    With the purpose to study the radioactive precipitation present in the Argentina Republic, due to the rehearsal the nuclear weapons in the atmosphere carried out in the past, you implement the environmental sampling outside of the area gives influence the nuclear facilities the Argentina during the years 1996 and 1997. The concentrations were determined Cs 137 and Sr 90 in samples air, radioactive material (rain water), milk, diet standard average and in several foods

  19. A Neutron Burst Associated with an Extensive Air Shower?

    Science.gov (United States)

    Alves, Mauro; Martin, Inacio; Shkevov, Rumen; Gusev, Anatoly; De Abreu, Alessandro

    2016-07-01

    A portable and compact system based on a He-3 tube (LND, USA; model 25311) with an area of approximately 250 cm² and is used to record neutron count rates at ground level in the energy range of 0.025 eV to 10 MeV, in São José dos Campos, SP, Brazil (23° 12' 45" S, 45° 52' 00" W; altitude, 660m). The detector, power supply, digitizer and other hardware are housed in an air-conditioned room. The detector power supply and digitizer are not connected to the main electricity network; a high-capacity 12-V battery is used to power the detector and digitizer. Neutron counts are accumulated at 1-minute intervals continuously. The data are stored in a PC for further analysis. In February 8, 2015, at 12 h 22 min (local time) during a period of fair weather with minimal cloud cover (shower that occurred over the detector.

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

    OpenAIRE

    Lisandro Héctor Luis-Negrete; Francisco Brusa; Leigh Winsor

    2011-01-01

    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 togeth...

  1. Amanita muscaria (Basidiomycota y su asociación micorríca con Cedrus Deodara (Pinaceae en las Sierras de Córdoba, Argentina Amanita muscaria (Basidiomycota and its mycorrhizal association with Cedrus deodara (Pinaceae in the Sierras de Córdoba, Argentina

    Directory of Open Access Journals (Sweden)

    Graciela Daniele

    2005-07-01

    Full Text Available En este trabajo se cita por primera vez para el centro de Argentina, la presencia de fructificaciones de Amanita muscaria (L. ex Fr. Hooker asociadas con Cedrus deodara (Roxb Loud. Se describen los esporocarpos hallados y se caracteriza morfo-anatómicamente la ectomicorriza con C. deodara. La ectomicorriza presenta ramificaciones simples a dicotómicas, escasas hifas emanantes y un manto blanco con abundantes partículas de suelo adheridas, constituido por tres capas, la externa plectenquimática con hifas formando un arreglo en forma de anillo.This is the first record of A. muscaria (L. ex Fr. Hooker basidiocarps in the center of Argentina in association with Cedrus deodara (Roxb Loud. Morphological and anatomical characteristics of the mycorrhizal association between A. muscaria and C. deodara are described and illustrated for the first time. The ectomycorrhizae is characterized by the presence of simple to dichotomous branches, few emanating hyphae and a white mantle with abundant soil particles with three layers, the plectenquimatic outer layer characterized by a ring-like arrangement.

  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. Association between Ambient Air Pollution and Outpatient Visits for Acute Bronchitis in a Chinese City

    Institute of Scientific and Technical Information of China (English)

    GUO Li Juan; ZHAO Ang; CHEN Ren Jie; KAN Hai Dong; KUANG Xing Ya

    2014-01-01

    Objective To investigate the short-term association between outdoor air pollution and outpatient visits for acute bronchitis, which is a rare subject of research in the mainland of China. Methods A time-series analysis was conducted to examine the association of outdoor air pollutants with hospital outpatient visits in Shanghai by using two-year daily data (2010-2011). Results Outdoor air pollution was found to be associated with an increased risk of outpatient visits for acute bronchitis in Shanghai. The effect estimates of air pollutants varied with the lag structures of the concentrations of the pollutants. For lag06, a 10μg/m3 increase in the concentrations of PM10, SO2, and NO2 corresponded to 0.94%(95%CI:0.83%, 1.05%), 11.12%(95%CI:10.76%, 11.48%), and 4.84%(95%CI: 4.49%, 5.18%) increases in hospital visits for acute bronchitis, respectively. These associations appeared to be stronger in females (P Conclusion Our analyses have provided the first evidence that the current air pollution level in China has an effect on acute bronchitis and that the rationale for further limiting air pollution levels in Shanghai should be strengthened.

  4. Transformaciones en la dinámica política argentina. La ciudad de Buenos Aires: marginación partidaria y vitalidad del espacio público

    Directory of Open Access Journals (Sweden)

    Sebastián Mauro

    2011-11-01

    Full Text Available Normal 0 21 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabla normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} En el contexto del declive de los partidos políticos como articuladores de identidades colectivas, la ciudad de Buenos Aires, capital de Argentina, presenta una evolución particular. Luego del colapso de su sistema partidario, ganaron popularidad discursos identificados con el progresismo, facilitando la reelección del Jefe de Gobierno. Pero apenas tres años después, dicha retórica entró en un declive que condujo a la destitución del mandatario comunal y, en las elecciones posteriores, al triunfo de un candidato de centroderecha. El artículo describe e interpreta la evolución de este proceso.

  5. CT Air Trapping Is Independently Associated with Lung Function Reduction over Time

    OpenAIRE

    Mets, O.M.; de Jong, P. A.; van Ginneken, B.; Kruitwagen, C.L.J.J.; Prokop, M; Oudkerk, M; Lammers, J. W.; Zanen, P.

    2013-01-01

    Purpose We aimed to study the association between lung function decline and quantitative computed tomography (CT) air trapping. Materials and Methods Current and former heavy smokers in a lung cancer screening trial underwent volumetric low-dose CT in inspiration and expiration. Spirometry was obtained at baseline and after 3 years. The expiratory to inspiratory ratio of mean lung density (E/I-ratioMLD) was used to quantify air trapping. CT emphysema was defined as voxels in inspiratory CT be...

  6. Association between air pollution and preterm birth among neonates born in Isfahan, Iran

    OpenAIRE

    Mohsen Janghorbani; Janghorbani Piraei

    2013-01-01

    Background: Although several studies have investigated the association between maternal exposure to air pollution and preterm birth, the results are inconsistent. The aim of this study was to further investigate the relation between maternal exposure to ambient air pollution during pregnancy and the risk of preterm birth and low birth weight (LBW) in an Iranian pregnant population. Materials and Methods: In this study, we identified 4758 consecutive singleton birth records from one large refe...

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

    Science.gov (United States)

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

    1990-01-01

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

  8. Astronomy in Argentina

    OpenAIRE

    Muriel, Hernán

    2012-01-01

    This article analyses the current state of Astronomy in Argentina and describes its origins. We briefly describe the institutions where astronomical research takes place, the observational facilities available, the training of staff and professionals, and the role of the institutions in scientific promotion. We also discuss the outreach of Astronomy towards the general public, as well as amateur activities. The article ends with an analysis of the future prospects of astronomy in Argentina.

  9. Astronomy in Argentina

    CERN Document Server

    Muriel, Hernán

    2013-01-01

    This article analyses the current state of Astronomy in Argentina and describes its origins. We briefly describe the institutions where astronomical research takes place, the observational facilities available, the training of staff and professionals, and the role of the institutions in scientific promotion. We also discuss the outreach of Astronomy towards the general public, as well as amateur activities. The article ends with an analysis of the future prospects of astronomy in Argentina.

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

    International Nuclear Information System (INIS)

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2015-07-01

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

  12. 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.

  13. The Chilean granite (austral mountains of Buenos Aires-Argentina): preludial testimony of the Rifting Jurassic-Cretaceous in the Colorado and Macachin Basins

    International Nuclear Information System (INIS)

    The tectonic significance of Los Chilenos (140 16 Ma), forming the crystalline basement of the Sierras Australes de Buenos Aires, is out lighted as a preludial testimony of Jurassic-Cretaceous rifting which controlled the sedimentation in neighbouring Colorado and Macachin basins. (author)

  14. The nuclear research centre at Bariloche, Argentina

    International Nuclear Information System (INIS)

    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)

  15. 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...

  16. 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.

  17. Fluctuation analysis-based risk assessment for respiratory virus activity and air pollution associated asthma incidence.

    Science.gov (United States)

    Liao, Chung-Min; Hsieh, Nan-Hung; Chio, Chia-Pin

    2011-08-15

    Asthma is a growing epidemic worldwide. Exacerbations of asthma have been associated with bacterial and viral respiratory tract infections and air pollution. We correlated the asthma admission rates with fluctuations in respiratory virus activity and traffic-related air pollution, namely particulate matter with an aerodynamic diameter ≤ 10 μm (PM₁₀), nitrogen dioxide (NO₂), carbon monoxide (CO), sulfur dioxide (SO₂), and ozone (O₃). A probabilistic risk assessment framework was developed based on a detrended fluctuation analysis to predict future respiratory virus and air pollutant associated asthma incidence. Results indicated a strong association between asthma admission rate and influenza (r=0.80, pinfluenza to below 0.9. We concluded that fluctuation analysis based risk assessment provides a novel predictor of asthma incidence. PMID:21663946

  18. Microsporidian isolates from mosquitoes of Argentina

    Science.gov (United States)

    Microsporidia are among the most common and widely distributed microbial pathogens associated with mosquitoes in nature. Since 1980 studies of microsporidia in mosquitoes of Argentina were conducted at the Laboratory of Insect Vectors of CEPAVE. Eleven morphologically unique species of microsporidia...

  19. Dirigentes de migrantes andinos, empleados y funcionarios públicos ante "el Estado": Una mirada desde abajo para comprender procesos políticos locales (Ciudad de Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Canelo Brenda

    2008-07-01

    Full Text Available Este trabajo explora representaciones acerca del Estado presentes entre dirigentes de migrantes del área andina central (Bolivia, Perú y noroeste argentino residentes en la Ciudad de Buenos Aires y alrededores, quienes poseen una trayectoria de lucha política caracterizada por la fuerte interlocución con un otro al que entienden como "el Estado". Me interesa indagar cómo esas representaciones se relacionan con las prácticas que dichos dirigentes realizan ante el gobierno porteño en vistas a alcanzar objetivos cuyo sentido también se vincula con esa particular imagen del Estado. Asimismo, examino el significado del Estado para empleados y funcionarios públicos del GCBA con quienes esos dirigentes interactúan, cómo esa idea se liga con su práctica cotidiana al interior de instituciones estatales y cómo, en definitiva, ponen en acción al Estado orientados por esas representaciones, constreñidos por diversas regulaciones y condiciones materiales y demandados por los agentes sociales con quienes su trabajo los vincula.Este artigo explora as representações sobre o Estado presentes entre os líderes dos emigrantes da região dos Andes Centrais (Bolívia, Peru e noroeste da Argentina residentes na cidade e nos subúrbios de Buenos Aires. Estes líderes têm um histórico de luta política marcado por uma forte interlocução entre eles e o que compreendem como "o Estado". Meu interesse é investigar como estas representações se relacionam com as práticas executadas por estes líderes perante o governo desta cidade, a fim de conseguir objetivos, cujo sentido esteja ligado também a essa imagem particular de Estado. Ademais, examino o significado do Estado para empregados e funcionários públicos do GCBA com quem estes líderes interagem, como essa idéia é ligada com sua prática diária dentro das instituições do Estado e como, orientados por estas representações, confinados por vários regulamentos e por circunst

  20. Occupational health in Argentina.

    Science.gov (United States)

    Werner, A F

    2000-07-01

    Argentina is within the denominated "new industrialised countries", with the characteristic of having high contrasts in the urban population, based on service and industry, and in the rural population, based on agriculture and cattle, still the main sources of wealth in the country. The process of globalisation and the need to compete hard in international markets have provoked high unemployment and the transfer of workers from a formal market to an informal one. Legislation on occupational health is old and it is in the process of being updated. The system of prevention, assistance and compensation for accidents at work and for occupational illnesses has changed from being optative for employers, to the compulsory hiring of private insurance companies. The Government keeps the role of supervisor of the system. There are enough professionals in occupational health, hygiene and safety but not occupational nurses. The teaching is given by many universities and professional associations, some of which have an active profile in the occupational health of the country. PMID:10963410

  1. PET in Argentina: A pioneer project in Latin America

    International Nuclear Information System (INIS)

    This report describes in detail the work of planning, installation and operation for the first PET Center in Latin America. Situated in the city of Mendoza -1100 km west from Buenos Aires-, today it still represents a major challenge given the general infrastructure conditions and limited resources for the region. Our purpose is to share the experience of more than 15 years in this exciting field, so as to encourage and advise on the development of other PET facilities in Argentina and other countries. The interest in Positron Emission Tomography in Argentina dates from the mid-80's, as an early initiative of CNEA (National Atomic Energy Commission) and its associated company INVAP (Applied Research Inc.). However, it almost took a decade to consolidate a working PET center at the Nuclear Medicine School Foundation in Mendoza (FUESMEN), and to develop its main constituents: radionuclide production, radiochemistry lab and scanning unit. Such areas are integrated by a multidisciplinary team of physicists, engineers, radiochemists, technologists and nuclear medicine physicians

  2. Sewage impact on the composition and distribution of Polychaeta associated to intertidal mussel beds of the Mar del Plata rocky shore, Argentina

    OpenAIRE

    Rodolfo Elías; María Silvia Rivero; Eduardo Alberto Vallarino

    2003-01-01

    The polychaete composition and distribution within mussel beds were studied in order to assess organic pollution due to domestic sewage in a rocky shore of Mar del Plata (Argentina) during 1997. Four stations and a control site were randomly sampled around the local effluent. Quantitative data on polychaetes, as well as sediment accumulated among mussels and its organic carbon content were measured. Polychaete distribution patterns are related to the organic matter gradient, being Capitella c...

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

    International Nuclear Information System (INIS)

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

  4. Among conflict hypothesis and commercial society. Puerto Quequén (Argentina and the ports of Brazil, 1929-1955

    Directory of Open Access Journals (Sweden)

    José Antonio Mateo

    2016-01-01

    Full Text Available From the Great Depression to the postwar, economic relations between countries experienced a period of accommodation. The global food market suffered heavy alterations, where a number of countries competed for the location of their agricultural surpluses. Changes in international demand, in terms of trade and the restrictions placed on the entry of products for countries participating heavily on the export of commodities, such as Argentina, raised residual markets seeking to locate their agricultural surpluses. This new situation, besides being an incentive of substitution industrialization, mostly addressed in the region by Argentina and Brazil, also weakened the regional dependence on its traditional trading partners, allowing the integration of their economies and strengthening trade association alternatively, generating a stream of exchange centered in wheat consolidate and then survive the war in an integration would follow different paths to the possibility of conflict or interests aimed at promoting discord between Argentina and Brazil. In this paper we measure and evaluate this process from shipping traffic in Puerto Quequén -in the Province of Buenos Aires, Argentina- between 1929 and 1955

  5. Argentina's chemical makers seek government support

    International Nuclear Information System (INIS)

    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

  6. Air Pollution modifies the association between successful and pathological aging throughout the frailty condition.

    Science.gov (United States)

    Fougère, Bertrand; Vellas, Bruno; Billet, Sylvain; Martin, Perrine J; Gallucci, Maurizio; Cesari, Matteo

    2015-11-01

    The rapid growth in the number of older adults has many implications for public health, including the need to better understand the risks posed by environmental exposures. Aging leads to a decline and deterioration of functional properties at the cellular, tissue and organ level. This loss of functional properties yields to a loss of homeostasis and decreased adaptability to internal and external stress. Frailty is a geriatric syndrome characterized by weakness, weight loss, and low activity that is associated with adverse health outcomes. Frailty manifests as an age-related, biological vulnerability to stressors and decreased physiological reserves. Ambient air pollution exposure affects human health, and elderly people appear to be particularly susceptible to its adverse effects. The aim of this paper is to discuss the role of air pollution in the modulation of several biological mechanisms involved in aging. Evidence is presented on how air pollution can modify the bidirectional association between successful and pathological aging throughout the frailty conditions. PMID:26462883

  7. Air

    Science.gov (United States)

    ... house) Industrial emissions (like smoke and chemicals from factories) Household cleaners (spray cleaners, air fresheners) Car emissions (like carbon monoxide) *All of these things make up “particle pollution.” They mostly come from cars, trucks, buses, and ...

  8. Historia natural y ecología de los ofidios (Reptilia: Serpentes) de las sierras australes de la provincia de Buenos Aires, Argentina

    OpenAIRE

    Di Pietro, Diego Omar

    2016-01-01

    En este trabajo fueron analizados diversos aspectos de la composición faunística, historia natural, ecología y distribución espacial de la comunidad de serpientes de las Sierras Australes de la provincia de Buenos Aires, o Sierras de Ventania, con el propósito de establecer prioridades de conservación. El área de muestreo comprendió los partidos de Puan, Saavedra, Tornquist, Cnel. Suárez y Cnel. Pringles, abarcando la totalidad de la unidad orográfica del sudoeste bonaerense (entre los 37°...

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

    OpenAIRE

    Martínez, Gustavo Adolfo; Bayala, Pablo; Flensborg, Gustavo

    2009-01-01

    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 s...

  10. Influencia del cambio de uso del suelo sobre el escurrimiento superficial : Estudio de caso: Cuenca del Arroyo Napaleofú, provincia de Buenos Aires, Argentina

    OpenAIRE

    Senisterra, Gabriela Elba

    2014-01-01

    En los últimos 30 años el sector agropecuario de la Provincia de Buenos Aires experimentó una profunda transformación. El agro vivió un intenso proceso caracterizado por una mayor eficiencia en el uso de los factores productivos, acompañado por la adopción de cambios técnicos y por el desarrollo de nuevas formas de producción. Los planteos productivos se concentraron en pocos cultivos de alta productividad y homogeneidad genética, que a la par de maximizar la producción y la rentabilidad, sim...

  11. Primera cita de Aleiodes laphygmae (Hymenoptera: Braconidae) para Argentina y de su asociación con larvas de Spodoptera eridania (Lepidoptera: Noctuidae) First record of Aleiodes laphygmae (Hymenoptera: Braconidae) for Argentina and its association with larvae of Spodoptera eridania (Lepidoptera: Noctuidae)

    OpenAIRE

    Liliana Valverde; D. Carolina Berta; Marcelo Geronimo Gomez

    2012-01-01

    Se reporta por primera vez para Argentina Aleiodes laphygmae (Viereck) (Hymenoptera: Braconidae) y como parasitoide de larvas de Spodoptera eridania (Stoll) (Lepidoptera: Noctuidae), en plantaciones de soja en la provincia de Tucumán (Argentina). Se provee información biológica como hábitos, hospedadores y distribución.Aleiodes laphygmae (Viereck) (Hymenoptera: Braconidae), is reported for the first time for Argentina. It is also reported parasitizing larvae of Spodoptera eridania (Stoll) (Le...

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

    Directory of Open Access Journals (Sweden)

    Nielsen-Marsh, C.

    2000-12-01

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

  13. Differences in birth weight associated with the 2008 Beijing olympics air pollution reduction: Results from a natural experiment

    OpenAIRE

    Rich, DQ; Liu, K.; Thurston, SW; Stevens, TP; Pan, Y.; Kane, C; Weinberger, B; Ohman-Strickland, P; Woodruff, TJ; Duan, X.; Assibey-Mensah, V; Zhang, J.

    2015-01-01

    Background Previous studies have reported decreased birth weight associated with increased air pollutant concentrations during pregnancy. However, it is not clear when during pregnancy increases in air pollution are associated with the largest differences in birth weight. Objectives Using the natural experiment of air pollution declines during the 2008 Beijing Olympics, we evaluated whether having specific months of pregnancy (i.e., 1st…8th) during the 2008 Olympics period was associated with...

  14. 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.

  15. Do Variants in GSTs Modify the Association between Traffic Air Pollution and Asthma in Adolescence?

    OpenAIRE

    Gayan Bowatte; Lodge, Caroline J.; Adrian J. Lowe; Bircan Erbas; Martine Dennekamp; Marks, Guy B; Jennifer Perret; Jennie Hui; Matthias Wjst; Gurrin, Lyle C; Allen, Katrina J.; Michael J. Abramson; Matheson, Melanie C; Dharmage, Shyamali C.

    2016-01-01

    Polymorphisms in genes involved in the oxidative stress response may partially explain the documented heterogeneous associations between traffic-related air pollution (TRAP) exposure and asthma and allergies in children. We investigated whether the GSTT1, GSTM1 and GSTP1 gene polymorphisms modified the associations between TRAP exposure during the first year of life and asthma, wheeze and hay fever in adolescence. We used a birth cohort of 620 high risk infants from the Melbourne Atopy Cohort...

  16. Survival analysis to estimate association between short-term mortality and air pollution.

    OpenAIRE

    Lepeule, Johanna; Rondeau, Virginie; Filleul, Laurent; Dartigues, Jean-Francois

    2006-01-01

    BACKGROUND: Ecologic studies are commonly used to report associations between short-term air pollution and mortality. In such studies, the unit of observation is the day rather than the individual. Moreover, individual data on the subjects are rarely available, which limits the assessment of individual risk factors. These associations can also be investigated using case-crossover studies. However, by definition, individual risk factors are not studied, and such studies analyze only dead subje...

  17. Association between air pollution and intrauterine mortality in São Paulo, Brazil.

    OpenAIRE

    Pereira, L.A.; Loomis, D; G.M. Conceição; Braga, A L; Arcas, R M; Kishi, H S; Singer, J. M.; Böhm, G. M.; Saldiva, P H

    1998-01-01

    The associations among daily counts of intrauterine mortality and pollutant concentrations (NO2, SO2, CO, O3, and particulate matter (3/4)10 microm) were investigated for the period ranging from January 1991 to December 1992 in the city of São Paulo, Brazil. We used Poisson regression techniques, adjusted for season and weather. The association between intrauterine mortality and air pollution was strong for NO2 (coefficient = 0.0013/ microg/m3; p

  18. Association between Air Pollution and Suicide in South Korea: A Nationwide Study

    OpenAIRE

    Kim, Youngdon; Myung, Woojae; Won, Hong-Hee; Shim, Sanghong; Jeon, Hong Jin; Choi, Junbae; Carroll, Bernard J.; Kim, Doh Kwan

    2015-01-01

    Suggestive associations of suicide with air pollutant concentrations have been reported. Recognizing regional and temporal variability of pollutant concentrations and of suicide, we undertook a detailed meta-analysis of completed suicides in relation to 5 major pollutants over 6 years in the 16 administrative regions of the Republic of Korea, while also controlling for other established influences on suicide rates. Of the 5 major pollutants examined, ozone concentrations had a powerful associ...

  19. GST M1 GENOTYPE INFLUENCES SPERM DNA DAMAGE ASSOCIATED WITH EXPOSURE TO AIR POLLUTION

    Science.gov (United States)

    For Society for Epidemiologic Research Meeting, June 15-18, 2004, Salt Lake City, Utah.Presenter: Sherry G. SelevanGSTM1 GENOTYPE INFLUENCES SPERM DNA DAMAGE ASSOCIATED WITH EXPOSURE TO AIR POLLUTION. J Rubes, SG Selevan*, R. Sram, DPEvenson, SD Perreault. VRI, ...

  20. Association between air pollution and asthma admission among children in Hong Kong

    OpenAIRE

    Lee, S L; Wong, W. H. S.; Lau, Y L

    2006-01-01

    Objective: To examine the association of air pollutants with hospital admission for childhood asthma in Hong Kong. Methods: Data on hospital admissions for asthma, influenza and total hospital admissions in children aged ≤18 years at all Hospital Authority hospitals during 1997-2002 were obtained. Data on daily mean concentrations of particles with aerodynamic diameter

  1. 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

  2. Primera cita de Aleiodes laphygmae (Hymenoptera: Braconidae para Argentina y de su asociación con larvas de Spodoptera eridania (Lepidoptera: Noctuidae First record of Aleiodes laphygmae (Hymenoptera: Braconidae for Argentina and its association with larvae of Spodoptera eridania (Lepidoptera: Noctuidae

    Directory of Open Access Journals (Sweden)

    Liliana Valverde

    2012-06-01

    Full Text Available Se reporta por primera vez para Argentina Aleiodes laphygmae (Viereck (Hymenoptera: Braconidae y como parasitoide de larvas de Spodoptera eridania (Stoll (Lepidoptera: Noctuidae, en plantaciones de soja en la provincia de Tucumán (Argentina. Se provee información biológica como hábitos, hospedadores y distribución.Aleiodes laphygmae (Viereck (Hymenoptera: Braconidae, is reported for the first time for Argentina. It is also reported parasitizing larvae of Spodoptera eridania (Stoll (Lepidoptera: Noctuidae in soybeans crops in Tucumán province (Argentina. Biological information on habits, hosts and distribution is provided.

  3. Association of stillbirth with ambient air pollution in a California cohort study.

    Science.gov (United States)

    Green, Rochelle; Sarovar, Varada; Malig, Brian; Basu, Rupa

    2015-06-01

    Recent studies have suggested an association between air pollution and stillbirth. In this California study, we examined the records of 13,999 stillbirths and 3,012,270 livebirths occurring between 1999 and 2009. Using a retrospective cohort design and logistic regression models, we calculated the odds of stillbirth associated with each pollutant exposure by trimester and throughout the entire pregnancy. Covariates considered in the model included infant sex, maternal demographic characteristics, season of last menstrual period, apparent temperature, air basin of mother's residence, and year of conception. In single-pollutant models, we found that a 10-µg/m(3) increase in particulate matter with an aerodynamic diameter less than or equal to 2.5 µm (odds ratio (OR) = 1.06, 95% confidence interval (CI): 0.99, 1.13) and a 10-ppb increase in nitrogen dioxide (OR = 1.08, 95% CI: 1.03, 1.13) during the entire pregnancy were associated with stillbirth. A 10-ppb increase in ozone exposure during the third trimester was also associated with a slightly elevated risk (OR = 1.03, 95% CI: 1.01, 1.05). These ozone and nitrogen dioxide findings were fairly stable after adjustment in 2-pollutant models. However, adjustment for nitrogen dioxide attenuated the full-pregnancy-particulate matter relationship. No significant associations were found for sulfur dioxide or carbon monoxide. These findings support growing evidence of an association between air pollution and adverse birth outcomes. PMID:25861815

  4. The association between air travel and deep vein thrombosis: Systematic review & meta-analysis

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    Adi Yaser

    2004-05-01

    Full Text Available Abstract Background Air travel has been linked with the development of deep vein thrombosis (DVT since the 1950s with a number of plausible explanations put forward for causation. No systematic review of the literature exploring this association has previously been published. Methods A comprehensive search was undertaken (Data bases searched were: MEDLINE, EMBASE, Cochrane Library for studies that estimated both the incidence and the risk of DVT in air travellers relative to non-air travellers. Results In total 254 studies were identified but only six incidence studies and four risk studies met inclusion criteria justifying their use in a systematic review. Incidence of symptomatic DVT ranged from (0% in one study to (0.28% which was reported in pilots over ten years. The incidence of asymptomatic DVT ranged from (0% to (10.34%. Pooled odds ratios for the two case control studies examining the risk of DVT following air travel were 1.11 (95% CI: 0.64–1.94. Pooled odds ratios for all models of travel including two studies of prolonged air travel (more than three hours were 1.70 (95% CI: 0.89–3.22. Conclusion We found no definitive evidence that prolonged (more than 3-hours travel including air travel, increases the risk of DVT. There is evidence to suggest that flights of eight hours or more increase the risk of DVT if additional risk factors exist.

  5. The association of ambient air pollution and physical inactivity in the United States.

    Directory of Open Access Journals (Sweden)

    Jennifer D Roberts

    Full Text Available BACKGROUND: Physical inactivity, ambient air pollution and obesity are modifiable risk factors for non-communicable diseases, with the first accounting for 10% of premature deaths worldwide. Although community level interventions may target each simultaneously, research on the relationship between these risk factors is lacking. OBJECTIVES: After comparing spatial interpolation methods to determine the best predictor for particulate matter (PM2.5; PM10 and ozone (O3 exposures throughout the U.S., we evaluated the cross-sectional association of ambient air pollution with leisure-time physical inactivity among adults. METHODS: In this cross-sectional study, we assessed leisure-time physical inactivity using individual self-reported survey data from the Centers for Disease Control and Prevention's 2011 Behavioral Risk Factor Surveillance System. These data were combined with county-level U.S. Environmental Protection Agency air pollution exposure estimates using two interpolation methods (Inverse Distance Weighting and Empirical Bayesian Kriging. Finally, we evaluated whether those exposed to higher levels of air pollution were less active by performing logistic regression, adjusting for demographic and behavioral risk factors, and after stratifying by body weight category. RESULTS: With Empirical Bayesian Kriging air pollution values, we estimated a statistically significant 16-35% relative increase in the odds of leisure-time physical inactivity per exposure class increase of PM2.5 in the fully adjusted model across the normal weight respondents (p-value<0.0001. Evidence suggested a relationship between the increasing dose of PM2.5 exposure and the increasing odds of physical inactivity. CONCLUSIONS: In a nationally representative, cross-sectional sample, increased community level air pollution is associated with reduced leisure-time physical activity particularly among the normal weight. Although our design precludes a causal inference, these

  6. Psicanálise e marxismo: a fratura da Associação Psicanalítica Argentina (1971 Psychoanalysis and Marxism: the splitting of the Argentine Psychoanalytic Association (1971

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    Hugo Vezzetti

    2009-01-01

    Full Text Available O artigo aborda um acontecimento inusual em que se cruzam a história da psicanálise e a da esquerda marxista: a renúncia, por motivos ideológicos, de dois grupos à associação argentina. O trabalho procura ir além do testemunho dos protagonistas e interrogar os relatos fixados sobre o acontecimento. Para isso explora, a partir dos anos de 1960, as condições e as alternativas desse encontro entre Freud e Marx, particularmente no âmbito universitário (a Faculdade de Filosofia e Letras da UBA, na organização corporativa profissional (a Federação Argentina de Psiquiatras e em organizações políticas da época (o Partido Comunista e o peronismo revolucionário.The article looks at an unusual event in which the history of psychoanalysis and that of the Marxist left intersected: the resignation of two groups from the Argentine association on ideological grounds. Looking to go beyond the testimony of the protagonists and interrogate the accounts focusing on the event, the text explores the conditions and alternatives of this encounter between Freud and Marx from the 1960s onwards, particularly in academia (the Faculty of Philosophy and Letters of the UBA, in a professional organization (the Argentine Federation of Psychiatrists and in political organizations active during the period (the Communist Party and revolutionary Peronism.

  7. Air

    International Nuclear Information System (INIS)

    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.)

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

    Directory of Open Access Journals (Sweden)

    Pablo Alejandro NACHT

    2012-06-01

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

  9. Air Pollution and Preterm Birth in the U.S. State of Georgia (2002–2006): Associations with Concentrations of 11 Ambient Air Pollutants Estimated by Combining Community Multiscale Air Quality Model (CMAQ) Simulations with Stationary Monitor Measurements

    OpenAIRE

    Hao, Hua; Chang, Howard H.; Holmes, Heather A.; Mulholland, James A.; Klein, Mitch; Darrow, Lyndsey A.; Strickland, Matthew J

    2015-01-01

    Background: Previous epidemiologic studies suggest associations between preterm birth and ambient air pollution. Objective: We investigated associations between 11 ambient air pollutants, estimated by combining Community Multiscale Air Quality model (CMAQ) simulations with measurements from stationary monitors, and risk of preterm birth (< 37 weeks of gestation) in the U.S. state of Georgia. Methods: Birth records for singleton births ≥ 27 weeks of gestation with complete covariate informatio...

  10. Cerebral Arterial Air Embolism Associated with Mechanical Ventilation and Deep Tracheal Aspiration

    OpenAIRE

    Gursoy, S.; Duger, C.; Kaygusuz, K.; Ozdemir Kol, I.; Gurelik, B.; Mimaroglu, C.

    2012-01-01

    Arterial air embolism associated with pulmonary barotrauma has been considered a rare but a well-known complication of mechanical ventilation. A 65-year-old man, who had subarachnoid hemorrhage with Glasgow coma scale of 8, was admitted to intensive care unit and ventilated with the help of mechanical ventilator. Due to the excessive secretions, deep tracheal aspirations were made frequently. GCS decreased from 8–10 to 4-5, and the patient was reevaluated with cranial CT scan. In CT scan, air...

  11. Measurements of atmospheric fallout in Argentina

    International Nuclear Information System (INIS)

    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)

  12. Diarrea en lechones lactantes y posdestete de cuatro criaderos intensivos de la provincia de Buenos Aires, Argentina: identificación e índice de detección de partículas virales en materia fecal por microscopía electrónica

    OpenAIRE

    Aguirre, José Ignacio; Petruccelli, Miguel Ángel; Armocida, A.; Moredo, Fabiana; Risso, Miguel Atilio; Venturini, María Lucila; Idiart, Julio Roberto; Perfumo, Carlos J.

    2000-01-01

    El presente estudio preliminar tuvo como objetivo identificar y determinar el índice de detección de partículas virales en heces diarreicas de lechones de 4 establecimientos intensivos de la Provincia de Buenos Aires, Argentina, empleando la técnica de tinción negativa en microscopía electrónica (TNME). Esta técnica ha venido empleándose durante décadas por su rapidez, sencillez y sensibilidad. Se estudiaron un total de 146 muestras pertenecientes a lechones lactantes (50) y a lechones posdes...

  13. El intrusivo López Lecube: Evidencias de magmatismo alcalino Gondwánico en el sector sudoeste de la provincia de Buenos Aires, Argentina

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    D.A. Gregori

    2003-06-01

    Full Text Available El Intrusivo López Lecube, de edad Pérmica, aflora en el sector SO de la Provincia de Buenos Aires, desconectado de rocas ígneas o sedimentarias que le hagan de caja. Está compuesto por una serie sienítica y una granítica, constituidas principalmente por cuarzo, feldespato potásico, hornblenda, plagioclasa y cantidades menores de titanita, biotita y apatito. Las características geoquímicas de la serie sienítica indican que ella deriva de magmas de manto y muestran rasgos peraluminosos a metaluminosos. Estas rocas se encuentran enriquecidas en LILE y deprimidos en HFSE. La serie granítica presenta una composición que se extiende desde levemente metaluminosa a peraluminosa, indicando participación de componentes corticales en su génesis. Esta serie no deriva de la serie sienítica mediante procesos de cristalización fraccionada. El evento magmático que generó el Intrusivo López Lecube se correlaciona con el ciclo magmático Gondwánico que se desarrolló en las Provincias de La Pampa y Mendoza, debido a sus similitudes en edad y composición química.

  14. 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.

  15. An epidemiological study of gastrointestinal parasites of dogs from Southern Greater Buenos Aires (Argentina): age, gender, breed, mixed infections, and seasonal and spatial patterns.

    Science.gov (United States)

    Fontanarrosa, María F; Vezzani, Darío; Basabe, Julia; Eiras, Diego F

    2006-03-31

    A total of 2193 fecal samples from owned dogs were collected during the 2003-2004 period in Southern Greater Buenos Aires, and were evaluated for the presence of intestinal parasites by a flotation-centrifugation method. The overall prevalence was 52.4%, and the 11 species found were: Ancylostoma caninum (13%), Isospora ohioensis complex (12%), Toxocara canis (11%), Trichuris vulpis (10%), Sarcocystis sp. (10%), Giardia duodenalis (9%), Isospora canis (3%), Hammondia-Neospora complex (3%), Dipilydium caninum (18 cases), Cryptosporidium sp. (5 cases), and Toxascaris leonina (1 case). There was no significant difference in the overall prevalence between genders (female = 50.4%, male = 54.6%), and breeds (pure = 52.3%, mixed = 53%), but prevalence in puppies (vulpis were spatially heterogeneous with a clear Southwest-Northeast gradient. Only prevalences of Sarcocystis sp. and G. duodenalis showed seasonal variation. The frequency distribution of the number of species per fecal sample did not differ from a random distribution. Results obtained throughout the world were discussed. PMID:16364551

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

    Directory of Open Access Journals (Sweden)

    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.

  17. La educación estatal en Argentina durante el peronismo. El caso de la provincia de Buenos Aires (1946-1955

    Directory of Open Access Journals (Sweden)

    Eva Mara Petitti

    2013-03-01

    Full Text Available El objetivo de este trabajo es analizar el proceso de formulación y desarrollo de las políticas educativas durante el peronismo, teniendo en cuenta en qué medida intervinieron los actores estatales y no estatales. Nuestro ámbito de observación empírica, la provincia de Buenos Aires, nos permite dialogar con los trabajos efectuados desde un enfoque nacional. Nos interesa realizar un análisis histórico de la interacción entre estado y la sociedad, que tenga en cuenta no solo a los ejecutores sino a sus destinatarios. Se considera que los complejos procesos que rodearon la formulación de las políticas educativas durante esta etapa, se generaron en un contexto en que el gobierno provincial debió adecuar sus acciones a las presiones y demandadas no sólo de diversos actores externos, sino también de las facciones que integraban su trama política interna

  18. Phylogenetic and molecular analyses of human parainfluenza type 3 virus in Buenos Aires, Argentina, between 2009 and 2013: The emergence of new genetic lineages.

    Science.gov (United States)

    Goya, Stephanie; Mistchenko, Alicia Susana; Viegas, Mariana

    2016-04-01

    Despite that human parainfluenza type 3 viruses (HPIV3) are one of the leading causes of acute lower respiratory tract infections in children under five, there is no licensed vaccine and there is limited current information on the molecular characteristics of regional and global circulating strains. The aim of this study was to describe the molecular characterization of HPIV3 circulating in Buenos Aires. We performed a genetic and phylogenetic analysis of the HN glycoprotein gene. Between 2009 and 2013, 124 HPIV3-positive samples taken from hospitalized pediatric patients were analyzed. Four new genetic lineages were described. Among them, C1c and C3d lineages showed local circulation patterns, whereas C3e and C3f comprised sequences from very distant countries. Despite the diversity of the described genotypes, C3a and C3d predominated over the others, the latter was present during the first years of the study and it was progressively replaced by C3a. Molecular analyses showed 28 non-synonymous substitutions; of these, 13 were located in potentially predicted B-cell epitopes. Taken together, the emergence of genetic lineages and the information of the molecular characteristics of HN protein may contribute to the general knowledge of HPIV3 molecular epidemiology for future vaccine development and antiviral therapies. PMID:26780643

  19. Phylodynamics of vampire bat-transmitted rabies in Argentina

    OpenAIRE

    Torres, C.; Lema, C; DOHMEN, F. GURY; Beltran, F.; NOVARO, L.; S. Russo; Freire, M. C.; Velasco-Villa, A; Mbayed, V. A.; D. M. CISTERNA

    2014-01-01

    Common vampire bat populations distributed from Mexico to Argentina are important rabies reservoir hosts in Latin America. The aim of this work was to analyse the population structure of the rabies virus (RABV) variants associated with vampire bats in the Americas and to study their phylodynamic pattern within Argentina. The phylogenetic analysis based on all available vampire bat-related N gene sequences showed both a geographical and a temporal structure. The two largest groups of RABV vari...

  20. Reflexiones para una historia del documental en Argentina

    Directory of Open Access Journals (Sweden)

    Carmen Guarini

    2006-12-01

    Full Text Available Documentary cinema has had, in Argentina, an uncertain destination, in some periods it was protagonist, and in others almost disappeared.In this last decade it reached levels of interesting production and quality. It is already a common place to associate this growth to the social situation of crisis since 2001 that overflew in “filmed events”. However, in Argentina documentary possesses a long history that includes fundamental names for its construction.

  1. Air pollution and diabetes association: Modification by type 2 diabetes genetic risk score.

    Science.gov (United States)

    Eze, Ikenna C; Imboden, Medea; Kumar, Ashish; von Eckardstein, Arnold; Stolz, Daiana; Gerbase, Margaret W; Künzli, Nino; Pons, Marco; Kronenberg, Florian; Schindler, Christian; Probst-Hensch, Nicole

    2016-09-01

    Exposure to ambient air pollution (AP) exposure has been linked to type 2 diabetes (T2D) risk. Evidence on the impact of T2D genetic variants on AP susceptibility is lacking. Compared to single variants, joint genetic variants contribute substantially to disease risk. We investigated the modification of AP and diabetes association by a genetic risk score (GRS) covering 63 T2D genes in 1524 first follow-up participants of the Swiss cohort study on air pollution and lung and heart diseases in adults. Genome-wide data and covariates were available from a nested asthma case-control study design. AP was estimated as 10-year mean residential particulate matter air pollution through alterations in insulin sensitivity. These results need confirmation in diabetes cohort consortia. PMID:27281273

  2. Cerebral Arterial Air Embolism Associated with Mechanical Ventilation and Deep Tracheal Aspiration

    Directory of Open Access Journals (Sweden)

    S. Gursoy

    2012-01-01

    Full Text Available Arterial air embolism associated with pulmonary barotrauma has been considered a rare but a well-known complication of mechanical ventilation. A 65-year-old man, who had subarachnoid hemorrhage with Glasgow coma scale of 8, was admitted to intensive care unit and ventilated with the help of mechanical ventilator. Due to the excessive secretions, deep tracheal aspirations were made frequently. GCS decreased from 8–10 to 4-5, and the patient was reevaluated with cranial CT scan. In CT scan, air embolism was detected in the cerebral arteries. The patient deteriorated and spontaneous respiratory activity lost just after the CT investigation. Thirty minutes later cardiac arrest appeared. Despite the resuscitation, the patient died. We suggest that pneumonia and frequent tracheal aspirations are predisposing factors for cerebral vascular air embolism.

  3. The notion of sewage as waste: a study of infrastructure change and institutional inertia in Buenos Aires, Argentina and Vancouver, Canada

    Directory of Open Access Journals (Sweden)

    Gunilla Öberg

    2014-06-01

    Full Text Available The need for a radical shift to more iterative and adaptive solutions in sewage management is increasingly recognized, but our ability to achieve such a shift is constrained by inertia to change. Here, we describe planning in two metropolitan areas that are upgrading their sewage systems, based on interviews with central actors and official documents. Using new institutionalism and concentrating on changes in normative, regulative, and cognitive patterns, we analyze if obstacles to the uptake of innovations can be understood in light of how these patterns counteract institutional change. Our aim is to understand obstacles to reformers implementing a wider vision of sewage management. Our study suggests that even though both Buenos Aires and Vancouver emphasize the need for integrated water management, it does not seem likely that either will implement a solution that challenges the end-of-pipe paradigm. We conclude that the main obstacle to change is the deeply rooted cognitive notion that sewage is waste. Framed as waste, sewage becomes something a community needs to get rid of, the faster the better. The notion of sewage being a worthless burden means that it is expected to generate costs, not revenues. When sewage is foremost framed as waste, the conventional linear end-of-pipe solution becomes the most logical way to manage it. We argue that this notion permeates the entire institutional structure and that its power is not recognized. We speculate on whether a shift toward iterative and adaptive solutions might be facilitated if sewage were redefined outside the water management umbrella and instead understood as resource management (for example, energy and nutrients, and if organizations responsible for delivering sewage services were reorganized accordingly.

  4. Association between the First Occurrence of Allergic Rhinitis in Preschool Children and Air Pollution in Taiwan.

    Science.gov (United States)

    Chung, Hui-Ying; Hsieh, Chia-Jung; Tseng, Chun-Chieh; Yiin, Lih-Ming

    2016-01-01

    The occurrence of allergic rhinitis (AR) may be significantly influenced by air pollution. This study examined the association between the first occurrence of AR in preschool children and the pre-incident levels of air pollutants in Taiwan. We identified 9960 eligible subjects from a systematic sampling cohort database containing 400,000 insureds of the National Health Insurance from 2007 to 2011 and matched them with the environmental monitoring data from 2006 to 2011 according to the locations of their clinics. Pre-incident levels were determined using the average concentrations of air pollutants one or two weeks prior to the AR diagnoses. Logistic regression analyses were performed to determine any significant relationships between AR and specific air pollutants. The first AR incidence for Taiwanese preschool children, which increased with age, was 10.9% on average; boys appeared to have a higher percentage (14.2%) than girls (8.27%). Among the air pollutants, carbon monoxide (CO) and nitrogen oxides (NOX) were significantly related to AR after adjusting for age and gender (p pollutants are considered to be traffic emissions, this study suggests that traffic emissions in Taiwan need to be controlled to lower the prevalence of children's AR. PMID:26927153

  5. Association between the First Occurrence of Allergic Rhinitis in Preschool Children and Air Pollution in Taiwan

    Directory of Open Access Journals (Sweden)

    Hui-Ying Chung

    2016-02-01

    Full Text Available The occurrence of allergic rhinitis (AR may be significantly influenced by air pollution. This study examined the association between the first occurrence of AR in preschool children and the pre-incident levels of air pollutants in Taiwan. We identified 9960 eligible subjects from a systematic sampling cohort database containing 400,000 insureds of the National Health Insurance from 2007 to 2011 and matched them with the environmental monitoring data from 2006 to 2011 according to the locations of their clinics. Pre-incident levels were determined using the average concentrations of air pollutants one or two weeks prior to the AR diagnoses. Logistic regression analyses were performed to determine any significant relationships between AR and specific air pollutants. The first AR incidence for Taiwanese preschool children, which increased with age, was 10.9% on average; boys appeared to have a higher percentage (14.2% than girls (8.27%. Among the air pollutants, carbon monoxide (CO and nitrogen oxides (NOX were significantly related to AR after adjusting for age and gender (p < 0.05. Because both pollutants are considered to be traffic emissions, this study suggests that traffic emissions in Taiwan need to be controlled to lower the prevalence of children’s AR.

  6. Is the association of airborne particles with daily deaths confounded by gaseous air pollutants? An approach to control by matching.

    OpenAIRE

    Schwartz, Joel David

    2004-01-01

    Although particulate air pollution has been associated with increased numbers of daily deaths in dozens of cities around the world, issues still remain about the association. Some have questioned the complex modeling used to control for season in Poisson regression or the role of gaseous air pollutants as potential confounders of the association. I examined the association between deaths and particulate matter with an aerodynamic diameter less than or equal to 10 microm (PM10) using a case-cr...

  7. A lab in Argentina

    Science.gov (United States)

    2016-06-01

    Mauricio Erben, a researcher at the National University of La Plata and the National Scientific and Technical Research Council, talks to Nature Chemistry about his experience of research in Argentina, and how it is inherently linked to the country's political climate.

  8. Radiation vulcanization in Argentina

    International Nuclear Information System (INIS)

    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. Mathematics Education in Argentina

    Science.gov (United States)

    Varsavsky, Cristina; Anaya, Marta

    2009-01-01

    This article gives an overview of the state of mathematics education in Argentina across all levels, in the regional and world contexts. Statistics are drawn from Mercosur and UNESCO data bases, World Education Indicators and various national time-series government reports. Mathematics results in national testing programmes, Programme for…

  10. Albert Einstein visits Argentina

    CERN Document Server

    Gangui, A; Gangui, Alejandro; Ortiz, Eduardo L.

    2005-01-01

    This is a detailed, day by day, account of Albert Einstein's activities, both social and scientific, during his 30-day stay in Argentina in 1925, including his lectures on relativity at the various local universities and his visit to the National Academy of Sciences, as follows from his personal Diary of the trip to South-America and other contemporary documents.

  11. Primer registro de Synbranchiformes (Teleostei para el Holoceno temprano de Argentina First record of Symbranchiformes (Teleostei from the early Holocene of Argentina

    Directory of Open Access Journals (Sweden)

    Sergio Bogan

    2012-06-01

    Full Text Available En este trabajo se presentan y describen los restos óseos de peces Synbranchidae cf. Synbranchus recuperados en los niveles fosilíferos de la Formación Río Bermejo de la localidad de Mansilla, sudeste de la provincia de Formosa, Argentina. Estos materiales constituyen los únicos restos de peces recuperados en dicha localidad y fueron hallados asociados a mamíferos fósiles característicos de finales del Pleistoceno y comienzos del Holoceno. Hasta el presente solo se conocen escasos restos fósiles de sinbránquidos en América del Sur. Los restos más antiguos corresponden a la parte más baja del Pleistoceno Superior ("Belgranense" de la región Pampeana de Buenos Aires. Los materiales de la Formación Río Bermejo representan el primer registro fósil conocido de un Synbranchidae cf. Synbranchus para el Holoceno temprano.In this contribution we present and describe the remains of the bony fish cf. Synbranchus, exhumed from fossiliferous levels of the Río Bermejo Formation, Mansilla, southeastern Formosa province, Argentina. These materials constitute the only fish remains exhumed in this area, and they were found in association with extinct mammals which are characteristic of the Late Pleistocene and Early Holocene. Until now, only few fossil remains of Synbranchidae were known in South America. The earliest records come from the lowermost section of the Upper Pleistocene ("Belgranense" from the Pampean region, Buenos Aires, Argentina. The materials coming from the Rio Bermejo Formation represent the first fossil record of a Synbranchidae cf. Synbranchus from the Early Holocene.

  12. 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.

  13. A conditional expectation approach for associating ambient air pollutant exposures with health outcomes

    OpenAIRE

    Wannemuehler, Kathleen A.; LYLES, Robert H.; Waller, Lance A.; Hoekstra, Robert M.; Klein, Mitchel; Tolbert, Paige

    2009-01-01

    Our research focuses on the association between exposure to an airborne pollutant and counts of emergency department visits attributed to a specific chronic illness. The motivating example for this analysis of measurement error in time series studies of air pollution and acute health outcomes was a study of emergency department visits from a 20-county Atlanta metropolitan statistical area from 1993–1999. The research presented illustrates the impact of using various surrogates for unobserved ...

  14. Short-term associations between outdoor air pollution and mortality in London 1992-4

    OpenAIRE

    Bremner, S A; Anderson, H R; Atkinson, R W; McMichael, A.J.; Strachan, D. P.; Bland, J. M.; Bower, J. S.

    1999-01-01

    OBJECTIVES: A previous study of the short term effects of air pollution in London from April 1987 to March 1992 found associations between all cause mortality and black smoke and ozone, but no clear evidence of specificity for cardiorespiratory deaths. London data from 1992 to 1994 were analysed to examine the consistency of results over time and to include particles with a mean aerodynamic diameter of 10 microns (PM10) and carbon monoxide. METHODS: Poisson regression was used of daily ...

  15. XXXVIII Annual meeting of the Argentine Association of Nuclear Technology (AATN 2011)

    International Nuclear Information System (INIS)

    The 38th Annual meeting of the Argentine Association of Nuclear Technology was organized by the AATN (Asociacion Argentina de Tecnologia Nuclear) in Buenos Aires, Argentine, between the 14 and 18 November of 2011. In this event 146 papers in 16 Sessions, with 13 Plenary Conferences and 3 Roundtables were presented.

  16. A study on the reconstruction of Los Acantilados Beach, Argentina

    NARCIS (Netherlands)

    Algera, A.; Burger, B.; Hartog, W.M.; De Rijke, Q.C.

    2004-01-01

    The city of Mar del Plata is situated some 400 km South of Buenos Aires, the capital of Argentina. The city has two main incomes, namely industry and tourism. In summer, beaches of this Atlantic Ocean faced destination are packed with typical Argentine beach tents, which can be rented, and people fr

  17. Associations between ambient air pollution and daily mortality among persons with congestive heart failure

    International Nuclear Information System (INIS)

    We conducted a mortality time series study to investigate the association between daily mortality for congestive heart failure (CHF), and dail concentrations of particles and gaseous pollutants in the ambient air o Montreal, Quebec, during the period 1984-1993. In addition, using data fro the universal Quebec Health Insurance Plan, we identified individuals ≥6 years of age who, one year before death, had a diagnosis of CHF. Fixed-sit air pollution monitors in Montreal provided daily mean levels of pollutants We regressed the logarithm of daily counts of mortality on the daily mean levels of each pollutant, after accounting for seasonal and subseasonal fluctuations in the mortality time series, non-Poisson dispersion, weather variables, and other gaseous and particle pollutants. Using cause of deat information, we did not find any associations between daily mortality for CH and any air pollutants. The analyses of CHF defined from the medical record showed positive associations with coefficient of haze, the extinction coefficient, SO2, and NO2. For example, the mean percent increase in dail mortality for an increase in the coefficient of haze across the interquartile range was 4.32% (95% CI: 0.95-7.80%) and for NO2 it was 4.08% (95% CI 0.59-7.68%). These effects were generally higher in the warm season

  18. [1st environmental isolation of Cryptococcus neoformans var. gattii in Argentina].

    Science.gov (United States)

    Davel, G; Abrantes, R; Brudny, M; Córdoba, S; Rodero, L; Canteros, C E; Perrotta, D

    2003-01-01

    Two strains of C. neoformans var. gattii serotype B were isolated from a park in Buenos Aires city, Argentina. Samples were collected in spring, rubbing with swabs on the inner hollow of Eucalyptus spp. and other trees, which were not identified at the collection moment. Samples were swabbed directly onto cafeic acid with antibiotic agar, then incubated at 28 degrees C and observed daily for a week. Isolates were recovered from cafeic acid medium showing characteristic colonies of the species that allowed differentiation from other microorganisms of the sample. Identification was performed using carbohydrate fermentation, assimilation of nitrogen and carbon sources, and urease and phenoloxidase detection. Strain variety was determined with canavanine-glicine-bromotimol blue agar medium (CGB). Genotypic characterization using AP-PCR with (GACA)4 aleatory primer showed that both band profiles could be differentiated by only one band. These two strains were isolated from tree species different from Eucalyptus spp. These isolates from natural sources demonstrate that C. neoformans var. gattii efosts in Buenos Aires city environment and that it is not necessarily associated with Eucalyptus spp. The presence of C. neoformansvar. gattii in the environment, detected for the first time in Argentina, may explain its sporadic association with human infections in the local population. PMID:12920995

  19. Registros paleomagnéticos y paleontológicos en sedimentos loessoides del Pleistoceno-Holoceno en el "Estadio Ciudad de La Plata", provincia de Buenos Aires, República Argentina Palaeomagnetic and Palaeontological records in loess-like Pleistocene-Holocene sediments in the Estadio Ciudad de La Plata , Buenos Aires Province, República Argentina

    Directory of Open Access Journals (Sweden)

    J. C. Bidegain

    2002-12-01

    Full Text Available Sedimentos de edad cuaternaria expuestos en la excavación de la obra "Estadio Ciudad de La Plata", 34º 57' 00" LS, 57º 57'40" LO, fueron estudiados mediante aplicación de la metodología paleomagnética convencional. Los vertebrados fósiles encontrados en los niveles basales de la secuencia sedimentaría corresponden a Scelidotheriinae ind., Doedicurus sp. y Panochthus intermedius, el último constituye el ejemplar más grande de Glyptodontidae registrado en la zona. De acuerdo a los datos paleomagnéticos los fósiles indicados quedan comprendidos en la zona de polaridad reversa que en el presente trabajo se asigna a la cronozona de Matuyama ( >0,78 Ma. El límite Brunhes / Matuyama se determinó a 4,6 m de profundidad desde el suelo actual. En virtud de esto, el registro sedimentario correspondiente a Brunhes es el de menor potencia obtenido para la región de La Plata. Al igual que lo observado en otras localidades de la provincia de Buenos Aires, la parte superior de la Zona Reversa de Matuyama coincide con el desarrollo de un paleosuelo (ciclo húmedo y la parte inferior de Brunhes con condiciones de clima más seco, que dieron lugar a capas de loess y sedimentos loessoides que se asocian a estadíos glaciales en la Cordillera y Patagonia.Quaternary sediment layers exposed in a cave in the Estadio Ciudad de La Plata S 34º 57´ 00´´ W 57º 57´40´´, were studied by applying conventional palaeomagnetic methodology. Vertebrate fossils found at the base of the sedimentary sequence correspond to Scelidotheriinae ind., Doedicurus sp. and Panochthus intermedius . the last being the largest Glyptodontidae found in the area. Palaeomagnetic measurements carried out on the profile indicate that the mammal fossils occur within the Matuyama Reverse Polarity Chronozone (>0,78 Ma. The Brunhes/Matuyama boundary was identifed at 4,6 m below the surface of the present soil, so this record of the Brunhes Zone is the shortest normal polarity record

  20. Associations between immune function and air pollution among postmenopausal women living in the Puget Sound airshed

    Science.gov (United States)

    Williams, Lori A.

    Air pollution is associated with adverse health outcomes, and changes in the immune system may be intermediate steps between exposure and a clinically relevant adverse health outcome. We analyzed the associations between three different types of measures of air pollution exposure and five biomarkers of immune function among 115 overweight and obese postmenopausal women whose immunity was assessed as part of a year-long moderate exercise intervention trial. For air pollution metrics, we assessed: (1) residential proximity to major roads (freeways, major arterials and truck routes), (2) fine particulate matter(PM2.5) at the nearest monitor to the residence averaged over three time windows (3-days, 30-days and 60-days), and (3) nitrogen dioxide (NO2) modeled based on land use characteristics. Our immune biomarkers included three measures of inflammation---C-reactive protein, serum amyloid A and interleukin-6---and two measures of cellular immunity---natural killer cell cytotoxicity and T lymphocyte proliferation. We hypothesized that living near a major road, increased exposure to PM2.5 and increased exposure to NO2 would each be independently associated with increased inflammation and decreased immune function. We observed a 21% lower average natural killer cell cytotoxicity among women living within 150 meters of a major arterial road compared to other women. For PM2.5 , we observed changes in 3 of 4 indicators of lymphocyte proliferation stimulated by anti-CD3---an antibody to the T cell receptor associated with increases in 3-day averaged PM2.5. For 30-day averaged PM 2.5 and 60-day averaged PM2.5 we did not observe any statistically significant associations. We observed an increase in lymphocyte proliferation index stimulated by the plant protein phytohemagglutinin (PHA) at 1 of 2 PHA concentrations in association with modeled NO2. For the three inflammatory markers, we observed no notable associations with any of our measures of air pollution. If confirmed, our

  1. 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.

  2. Sewage impact on the composition and distribution of Polychaeta associated to intertidal mussel beds of the Mar del Plata rocky shore, Argentina

    Directory of Open Access Journals (Sweden)

    Elías Rodolfo

    2003-01-01

    Full Text Available The polychaete composition and distribution within mussel beds were studied in order to assess organic pollution due to domestic sewage in a rocky shore of Mar del Plata (Argentina during 1997. Four stations and a control site were randomly sampled around the local effluent. Quantitative data on polychaetes, as well as sediment accumulated among mussels and its organic carbon content were measured. Polychaete distribution patterns are related to the organic matter gradient, being Capitella cf. capitata, Neanthes succinea (Frey & Leuckart, 1847 and Boccardia polybranchia (Haswell, 1885 the dominant indicator species close to the effluent. At medial distances, the cirratulids Caulleriella alata (Southern, 1914 and Cirratulus cirratus (Müller, 1776 are very important in abundance. The syllids Syllis prolixa Ehlers, 1901 and S. gracilis Grube, 1840 are distributed along the study area, but dominate at the medial stations and at the control site. The orbiniid Protoariciella uncinata Hartmann-Schröder, 1962 is subdominant at the control station.

  3. Helosis (Balanophoraceae) en Argentina Helosis (Balanophoraceae) in Argentina

    OpenAIRE

    José Luis Fontana; Orlando Fabián Popoff

    2006-01-01

    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 ilustra...

  4. 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.

  5. Phylodynamics of vampire bat-transmitted rabies in Argentina.

    Science.gov (United States)

    Torres, C; Lema, C; Dohmen, F Gury; Beltran, F; Novaro, L; Russo, S; Freire, M C; Velasco-Villa, A; Mbayed, V A; Cisterna, D M

    2014-05-01

    Common vampire bat populations distributed from Mexico to Argentina are important rabies reservoir hosts in Latin America. The aim of this work was to analyse the population structure of the rabies virus (RABV) variants associated with vampire bats in the Americas and to study their phylodynamic pattern within Argentina. The phylogenetic analysis based on all available vampire bat-related N gene sequences showed both a geographical and a temporal structure. The two largest groups of RABV variants from Argentina were isolated from northwestern Argentina and from the central western zone of northeastern Argentina, corresponding to livestock areas with different climatic, topographic and biogeographical conditions, which determined their dissemination and evolutionary patterns. In addition, multiple introductions of the infection into Argentina, possibly from Brazil, were detected. The phylodynamic analysis suggests that RABV transmission dynamics is characterized by initial epizootic waves followed by local enzootic cycles with variable persistence. Anthropogenic interventions in the ecosystem should be assessed taking into account not only the environmental impact but also the potential risk of disease spreading through dissemination of current RABV lineages or the emergence of novel ones associated with vampire bats. PMID:24661865

  6. Spatial associations between socioeconomic groups and NO2 air pollution exposure within three large Canadian cities.

    Science.gov (United States)

    Pinault, Lauren; Crouse, Daniel; Jerrett, Michael; Brauer, Michael; Tjepkema, Michael

    2016-05-01

    Previous studies of environmental justice in Canadian cities have linked lower socioeconomic status to greater air pollution exposures at coarse geographic scales, (i.e., Census Tracts). However, studies that examine these associations at finer scales are less common, as are comparisons among cities. To assess differences in exposure to air pollution among socioeconomic groups, we assigned estimates of exposure to ambient nitrogen dioxide (NO2), a marker for traffic-related pollution, from city-wide land use regression models to respondents of the 2006 Canadian census long-form questionnaire in Toronto, Montreal, and Vancouver. Data were aggregated at a finer scale than in most previous studies (i.e., by Dissemination Area (DA), which includes approximately 400-700 persons). We developed simultaneous autoregressive (SAR) models, which account for spatial autocorrelation, to identify associations between NO2 exposure and indicators of social and material deprivation. In Canada's three largest cities, DAs with greater proportions of tenants and residents who do not speak either English or French were characterised by greater exposures to ambient NO2. We also observed positive associations between NO2 concentrations and indicators of social deprivation, including the proportion of persons living alone (in Toronto), and the proportion of persons who were unmarried/not in a common-law relationship (in Vancouver). Other common measures of deprivation (e.g., lone-parent families, unemployment) were not associated with NO2 exposures. DAs characterised by selected indicators of deprivation were associated with higher concentrations of ambient NO2 air pollution in the three largest cities in Canada. PMID:26950027

  7. Poverty and Health in Argentina

    Directory of Open Access Journals (Sweden)

    Maria Alejandra Silva

    2009-06-01

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

  8. 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. PMID:27419102

  9. 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.

  10. Estabilidad, morfología y rugosidad de agregados de argiudoles típicos sometidos a distintos usos: su rol como indicadores de calidad física en suelos de la provincia de Buenos Aires, Argentina Stability, morphology and roughness of aggregates of typical argiudolls under diferent types of land uses: their role as indicators of soils physical quality in Buenos Aires province, Argentina

    Directory of Open Access Journals (Sweden)

    M Fernanda Alvarez

    2008-12-01

    Full Text Available En los últimos diez años se observó un importante cambio en el uso de la tierra en la llanura pampeana, lo cual ha llevado a una marcada degradación de los suelos. El objetivo del trabajo fue evaluar la estabilidad, la morfología y la rugosidad de distintos tamaños de agregados como indicadores de calidad en Argiudoles Típicos del sudeste bonaerense sometidos a distintos usos de suelo y a distintas intensidades de manejo. Se trabajó con el epipedón mólico de parcelas con distinto uso de suelo: cultivadas, forestadas y naturales. Los resultados mostraron mayor estabilidad en los suelos no laboreados y en los forestados de más de treinta años. En los sitios cultivados y forestados se observaron agregados alargados, cuadrangulares y esféricos, mientras que en los sitios sin laboreo no se presentaron las formas esféricas. La rugosidad de los agregados fue mayor en los suelos sin laboreo, si bien ello varió con el tamaño de los agregados. La estabilidad, morfología y rugosidad de agregados demostraron ser buenos indicadores de calidad de suelos del SE bonaerense.During the last ten years, an important land use change took place in the Pampas region of Argentina. This change led to a significant soil degradation. This work aims to evaluate the stability, morphology and roughness of soil aggregates in soils under different land uses. The values found for each land use could serve as soil quality indicators in southeastern Buenos Aires. Samples were taken from mollic epipedons under cultivated, forest and natural soils. Results showed higher aggregate stability in virgin and forest soils than in cultivated soils. Aggregates were elongated, quadrangular and spherical in cultivated and forest soils. Aggregates from non-cultivated soils did not show the expected spherical forms; they also presented a high roughness although it varied across the different aggregate sizes. Soil aggregate stability, morphology and roughness were suitable

  11. Spatial variations in the associations of term birth weight with ambient air pollution in Georgia, USA.

    Science.gov (United States)

    Tu, Jun; Tu, Wei; Tedders, Stuart H

    2016-01-01

    Birth weight is an important indicator of overall infant health and a strong predictor of infant morbidity and mortality, and low birth weight (LBW) is a leading cause of infant mortality in the United States. Numerous studies have examined the associations of birth weight with ambient air pollution, but the results were inconsistent. In this study, a spatial statistical technique, geographically weighted regression (GWR) is applied to explore the spatial variations in the associations of birth weight with concentrations of ozone (O3) and fine particulate matter (PM2.5) in the State of Georgia, USA adjusted for gestational age, parity, and six other socioeconomic, behavioral, and land use factors. The results show considerable spatial variations in the associations of birth weight with both pollutants. Significant positive, non-significant, and significant negative relationships between birth weight and concentrations of each air pollutant are all found in different parts of the study area, and the different types of the relationships are affected by the socioeconomic and urban characteristics of the communities where the births are located. The significant negative relationships between birth weight and O3 indicate that O3 is a significant risk factor of LBW and these associations are primarily located in less-urbanized communities. On the other hand, PM2.5 is a significant risk factor of LBW in the more-urbanized communities with higher family income and education attainment. These findings suggest that environmental and health policies should be adjusted to address the different effects of air pollutants on birth outcomes across different types of communities to more effectively and efficiently improve birth outcomes. PMID:27104672

  12. Coffee husk associated with firewood as fuel for indirect heating of drying air

    Energy Technology Data Exchange (ETDEWEB)

    Magalhaes, Edney Alves; Silva, Juarez de Sousa e; Silva, Jadir Nogueira da; Oliveira Filho, Delly [Universidade Federal de Vicosa (DEA/UFV), MG (Brazil). Dept. de Engenharia Agricola; Donzeles, Sergio Mauricio Lopes [Empresa de Pesquisa Agropecuaria de Minas Gerais (EPAMIG), Vicosa, MG (Brazil)

    2008-07-01

    The objective of this work was the performance analysis of a furnace, burning coffee husk associated with firewood to heat the drying air passing through a heat exchanger. For the analysis the temperature variation, the combustion quality, the heat losses and the furnace thermal efficiency were all monitored. Results showed that the furnace average efficiency was 58.3% and the heat losses in the exhaust were 24.3%. The presence of carbon monoxide in the exhaust gases (average 2982.8 ppm) had proven incomplete combustion, and suggesting that the combustion gases can not be used to directly drying of foods. Despite of indirect heating, the presented thermal efficiency indicates that the burning of coffee husks is one economic alternative for air heating in grain drying or in other agricultural processes. (author)

  13. Fruit fly eradication: Argentina

    International Nuclear Information System (INIS)

    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)

  14. The Huillin in Argentina

    OpenAIRE

    Chehebar C.

    1986-01-01

    We recommend re-introduction of huillines in Lanin, Puelo and Los Alerces National Parks, through translocations of animals, so as to minimize the risks involved in the present dependence on Nahuel Huapi and Staten Island (as far as we know) for the conservation of the species in Argentina. Also, we recommend careful monitoring and protection of the Nahuel Huapi population and protection of the Staten Island ecosystems.

  15. Psychology In Argentina

    OpenAIRE

    Modesto M. Alonso

    2016-01-01

    A summary on Psychology as science and profession in Argentina is presented. The report includes a historical review on places, criteria and results of psychologists'education, aspects of their professional practices; quantitative data on universities, graduates and students related to sociodemographic variables; characteristics of research activities, publications, legal frameworks and types of institutions where psychologists work. Some distinctive features of Argentine psychology are menti...

  16. Dollarization in Argentina

    OpenAIRE

    Francois R. Velde; Marcelo Veracierto

    1993-01-01

    Argentina became highly "dollarized" during its hyperinflations of 1989 and early 1990. Although inflation has returned to very low rates, a high degree of dollarization has persisted during the early 1990s, counter to what the currency substitution hypothesis predicts. This paper provides new evidence that explains the continued dollarization of the Argentine economy. ; First, we develop a new measure of dollar currency circulating in foreign countries. This measure improves our ability to a...

  17. Anomalías de circulación atmosférica en 500 y 1000 hpa asociada a la sequía producida en la Argentina durante enero de 2003 a marzo de 2004 Anomalies of the atmospheric circulation at 500 and 1000 hpa associated with the dry period in Argentina from january 2003 to march 2004

    Directory of Open Access Journals (Sweden)

    Adelia Perla Alessandro

    2008-03-01

    Full Text Available Neste trabalho se analisa e descreve a situação sinótica associada à precipitação e temperatura do território argentino durante o ano de 2003 e o primeiro trimestre de 2004. A escolha deste período obedece à falta de precipitações em pelo menos dez províncias argentinas, o que ocasionou grandes prejuízos econômicos no setor agropecuário. Com o intuito de determinar as causas deste déficit de precipitações foram analisados os campos médios de altura geopotencial nos níveis de 500 e 1000 hPa e suas anomalias. Em 2003, o déficit de precipitação se associa principalmente às anomalias de geopotencial no nível de 500 hPa, que mostram um fluxo dominante de SO que atravessa o país diagonalmente entre 45°S e 30°S. Em 1000 hPa o anticiclone subtropical do Atlântico se encontra enfraquecido, deslocado para o norte e afastado do continente, enquanto que o anticiclone subrtopical do Pacífico está mais intenso e deslocado para leste respeito da sua posição normal. No primeiro trimestre de 2004 a seca se deve principalmente à presença de uma crista no nível de 500 hPa posicionada no centro do país. As anomalias médias de temperatura do período considerado resultam positivas sobre toda a Argentina. Em 2003, essas anomalias se devem à contribuição do fluxo do N-NE desde o norte do país, à subsidência ocasionada pelo anticiclone do Pacífico mais deslocado para o interior do continente e a orografia. No primeiro trimestre de 2004 as anomalias se originam devido ao fluxo do norte e à freqüente circulação anticiclônica no Atlântico ao sul de 35°S.This paper analyzes and describes the synoptic situation associated with precipitation and temperature in Argentina during 2003 and the first quarter of 2004. The period was selected as during that time drought affected at least ten Argentine provinces, causing great agricultural and ranching losses. In order to find the causes of such rainfall deficit the mean and

  18. The Association between Ambient Air Pollution and Daily Mortality in Beijing after the 2008 Olympics: A Time Series Study

    OpenAIRE

    Yang Yang; Runkui Li; Wenjing Li; Meng Wang; Yang Cao; Zhenglai Wu; Qun Xu

    2013-01-01

    In recent decades, ambient air pollution has been an important public health issue in Beijing, but little is known about air pollution and health effects after the 2008 Beijing Olympics. We conduct a time-series analysis to evaluate associations between daily mortality (nonaccidental, cardiovascular and respiratory mortality) and the major air pollutants (carbon monoxide, nitrogen dioxide and particulate matter less than 10 µm in aerodynamic diameter) in Beijing during the two years (2009,201...

  19. Association of air pollution with daily GP consultations for asthma and other lower respiratory conditions in London

    OpenAIRE

    Hajat, S.; Haines, A; Goubet, S; Atkinson, R.; Anderson, H.

    1999-01-01

    BACKGROUND—Very few published studies have looked at the effects of air pollution on health in the primary care setting. As part of a large study to examine the association between air pollution and a number of health outcomes, the relationship between daily GP consultations for asthma and other lower respiratory diseases (LRD) and air pollution in London was investigated.
METHODS—Time-series analysis of daily numbers of GP consultations controlling for time trends, seaso...

  20. Study on the Association between Ambient Air Pollution and Daily Cardiovascular and Respiratory Mortality in an Urban District of Beijing

    OpenAIRE

    Thomas Krafft; Desheng Pei; Jinmei Lv; Wuyi Wang; Fengying Zhang; Liping Li

    2011-01-01

    The association between daily cardiovascular/respiratory mortality and air pollution in an urban district of Beijing was investigated over a 6-year period (January 2003 to December 2008). The purpose of this study was to evaluate the relative importance of the major air pollutants [particulate matter (PM), SO2, NO2] as predictors of daily cardiovascular/respiratory mortality. The time-series studied comprises years with lower level interventions to control air pollution (2003–2006) and years ...

  1. The Association between Ambient Air Pollution and Daily Mortality in Beijing after the 2008 Olympics: A Time Series Study

    OpenAIRE

    Yang, Yang; Li, Runkui; Li, Wenjing; Wang, Meng; Cao, Yang; Wu, Zhenglai; Xu, Qun

    2013-01-01

    In recent decades, ambient air pollution has been an important public health issue in Beijing, but little is known about air pollution and health effects after the 2008 Beijing Olympics. We conduct a time-series analysis to evaluate associations between daily mortality (nonaccidental, cardiovascular and respiratory mortality) and the major air pollutants (carbon monoxide, nitrogen dioxide and particulate matter less than 10 µm in aerodynamic diameter) in Beijing during the two years (2009∼201...

  2. Argentina [Country report

    International Nuclear Information System (INIS)

    The airborne geophysical surveys developed in Argentina are described. They have got more than 500.000 km2 acquiring data for U, Th, K and total background activity. Other types of published data are also mentioned (satellite imagery, seismic hazard, climate, soil distributions, etc.). The availability of maps with the abundances of elements analyzed at the country and also at laboratories from Canada is described, as well as data of analysis of several elements at two study areas proposed at the outset of the project. The availability of process rate data and epidemiological data is also explained. Argentina intended fully to participate in the CRP at the outset of the project. Due, however, to external resource constraints imposed on the participating organization (Comision Nacional de Energia Atomica, CNEA), the level of participation had to be significantly reduced. Nonetheless, in the first period of the CRP, Argentina undertook to collate existing geological and geochemical information within the country, and began to define potential areas for site specific natural systems safety indicator studies. (author)

  3. Episodic air pollution is associated with increased DNA fragmentation in human sperm without other changes in semen quality

    Energy Technology Data Exchange (ETDEWEB)

    Rubes, J.; Selevan, S.G.; Evenson, D.P.; Zudova, D.; Vozdova, M.; Zudova, Z.; Robbins, W.A.; Perreault, S.D. [US EPA, Research Triangle Park, NC (United States)

    2005-10-01

    This study examined potential associations between exposure to episodes of air pollution and alterations in semen quality. The air pollution, resulting from combustion of coal for industry and home heating in the Teplice district of the Czech Republic, was much higher during the winter than at other times of year with peaks exceeding US air quality standards. Young men from Teplice were sampled up to seven times over 2 years allowing evaluation of semen quality after periods of exposure to both low and high air pollution. Routine semen analysis (sperm concentration, motility and morphology) and tests for sperm aneuploidy and chromatin integrity were performed, comparing measurements within each subject. Exposure was classified as high or low based on data from ambient air pollution monitoring. Using repeated measures analysis, a significant association was found between exposure to periods of high air pollution (at or above the upper limit of US air quality standards) and the percentage of sperm with DNA fragmentation according to sperm chromatin structure assay (SCSA). Other semen measures were not associated with air pollution. It is concluded that exposure to intermittent air pollution may result in sperm DNA damage and thereby increase the rates of male-mediated infertility, miscarriage, and other adverse reproductive outcomes.

  4. DIETARY VITAMIN E DEFICIENCY AS A MODIFIER OF THE ASSOCIATIONS OF RESPIRATORY OUTCOMES WITH AIR POLLUTION IN ADOLESCENTS

    Science.gov (United States)

    Introduction: We investigated whether low dietary intake of the lipophilic antioxidant vitamin E may act as a modifier of chronic air pollution's associations with respiratory outcomes among adolescents due to an increased respiratory response to the oxidative effects of air pol...

  5. Short-term associations between air pollution and respiratory drug sales

    International Nuclear Information System (INIS)

    Study objective: This research was implemented to assess the effect of air pollution on anti-asthmatic, bronchodilator, and cough and cold preparation sales in the city of Rouen (France) based on the Upper Normandy Regional Union of Health Insurance Offices database and the Air Quality Monitoring Network database. Design: An ecological time-series analysis was performed for a period of 2 years (July 1998-June 2000). Generalized additive model yields to relative risks and 95% confidence interval (CI) estimates were also carried out. Main results: The 10-day cumulative effect of a 10-μg/m3 black smoke increase was significantly associated with a 6.2% (95% CI, 2.4-10.1%) increase in the sales of anti-asthmatics and bronchodilators and to a 9.2% (95% CI, 5.9-12.6%) increase in the sales of cough and cold preparation for children aged under 15 years. The cumulative effect of a 10-μg/m3 increase in SO2 was associated with an 11.8% (95% CI, 6.7-17.1%) increase in cough and cold preparation sales for children aged under 15 years. The cumulative effect of 10-μg/m3 increase in NO2 was associated with an 13.6% (95% CI, 8-18.3%) increase in cough and cold preparation sales for children under 15 years of age. Conclusions: The results of this study suggest that an increase in drugs sales was directly related to air pollutant concentration increases in the city of Rouen (France)

  6. Associations between ambient air pollution and prevalence of stroke and cardiovascular diseases in 33 Chinese communities

    Science.gov (United States)

    Dong, Guang-Hui; Qian, Zhengmin (Min); Wang, Jing; Chen, Weiqing; Ma, Wenjun; Trevathan, Edwin; Xaverius, Pamela K.; DeClue, Richard; Wiese, Andrew; Langston, Marvin; Liu, Miao-Miao; Wang, Da; Ren, Wan-Hui

    2013-10-01

    Inconsistent results have been reported that long-term exposure to ambient air pollution contributes to the increased prevalence of stroke and cardiovascular diseases (CVDs). In order to examine whether the exposure to ambient air pollution was associated with the prevalence of stroke and CVDs among people living in a heavy industrial province of northeast China, we conducted a cross-sectional study of 24,845 Chinese adults, ages 18-74 years old, from 33 communities in the 11 districts of the three Northeastern Chinese Cities during 2009. Three-year (2006-2008) average concentrations of particles with an aerodynamic diameter ≤10 μm (PM10), sulfur dioxide (SO2), nitrogen dioxides (NO2), and Ozone (O3) were calculated from monitoring stations in each of the 11 districts. We used two-level logistic regressions models to examine the effects of yearly variations in exposure to each pollutant, controlling for important covariates. We found significant associations between PM10 and SO2 levels and stroke prevalence after accounting for important covariates: the adjusted odds ratio for stroke increased by 1.16 (95% confidence interval [CI], 1.03-1.30) per 19 μg m-3 increase in PM10, and 1.14 (95%CI, 1.01-1.29) per 20 μg m-3 increase in SO2, respectively. When stratified analysis by gender, these associations were significant only in men, but not in women. In conclusion, this study shows the association between long-term exposure to PM10 and SO2 and increased stroke prevalence, and the associations were more apparent in men than in women.

  7. La mortalidad por armas de fuego en Argentina entre 1990 y 2008 Firearm mortality in Argentina, 1990-2008

    Directory of Open Access Journals (Sweden)

    Marina Gabriela Zunino

    2012-04-01

    Full Text Available Este es un estudio epidemiológico descriptivo de la mortalidad por armas de fuego en Argentina, 1990-2008. Se analizaron los porcentajes y las tasas de mortalidad por armas de fuego entre las jurisdicciones del país. Los datos provienen de la Dirección de Estadística e Información en Salud, Ministerio de Salud y Ambiente, República Argentina. Entre 1990-2008 se produjeron 358.484 muertes por causas externas de las cuales el 16,6% (59.339 correspondieron a armas de fuego. La Provincia de Buenos Aires presentó el porcentaje y tasas cruda y ajustada superiores. Las jurisdicciones de la Región Pampeana (incluye Provincia de Buenos Aires presentaron un perfil más homogéneo y similar al del país: aumento de las tasas en 1999-2002 y disminución en 2003-2006. Estos hallazgos se explicarían en parte por el deterioro socioeconómico vivido en Argentina a fines del siglo XX, que habría tenido mayor impacto en Provincia de Buenos Aires, por ser ésta una de las provincias con mayor desarrollo y dinamismo económico de Argentina. La situación de Provincia de Buenos Aires habría estado agravada por el hecho de tener una de las fuerzas policiales más represivas del país.This is a descriptive epidemiological study of firearm mortality in Argentina, 1990-2008. The study compared the firearm mortality percentages and rates between the country's jurisdictions. The data are from the Office of Health Statistics and Information, Ministry of Health. From 1990 to 2008 there were 358,484 deaths from external causes, of which 16.6% (59,339 were caused by firearms. The Province of Buenos Aires showed the highest percentage and crude and adjusted rates. The jurisdictions in the Pampeana region (including the Province of Buenos Aires showed a more homogeneous profile, similar to that of the country as a whole, with an increase in the rates from 1999 to 2002 and a decrease from 2003 to 2006. These findings are partially explained by the country

  8. Argentina's radioactive waste disposal policy

    International Nuclear Information System (INIS)

    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.)

  9. Worldwide associations between air quality and health end-points: Are they meaningful?

    Directory of Open Access Journals (Sweden)

    Peter Wallner

    2014-10-01

    Full Text Available Objectives: The World Health Organization (WHO provides data on national indices of health, environment and economy. When we were asked, why air pollution is negatively correlated with cancer mortality, our first response (presumably the mortality data are not age-adjusted was not sufficient to explain the paradox. Material and Methods: A table including all-cause, cancer and childhood mortality, life expectancy, gross national product per person, smoking prevalence, physician density and particulate matter (PM10 per country (N = 193 was developed. For explorative purposes weighted cross-sectional multiple linear regressions models were built. Results: Air pollution is positively correlated with infant and overall mortality and negatively with life expectancy. This might not only depict a true causal effect of PM10 because air quality is also an indicator of a country’s prosperity and general state of environment. Cancer mortality is negatively correlated with PM10. However, this association turns positive when economic or health system indicators are controlled. Conclusions: The World Health Organization’s world-wide data sets demonstrate the large disparity of our world. A careful and professional approach is needed as interpretation is difficult, especially for lay persons. Therefore, with publicly available data WHO should also provide interpretation and guidance.

  10. A case of cerebral aneurysm rupture and subarachnoid hemorrhage associated with air travel

    Directory of Open Access Journals (Sweden)

    Cui V

    2014-04-01

    Full Text Available Victoria Cui,1,2 Timur Kouliev,1 Jason Wood1 1Beijing United Family Hospital, Beijing, People's Republic of China; 2Department of Biological Sciences, Columbia University, New York, NY, USA Abstract: During air travel, passengers are exposed to unique conditions such as rapid ascent and descent that can trigger significant physiological changes. In addition, the cabins of commercial aircraft are only partially pressured to 552–632 mmHg or the equivalent terrestrial altitudes of 1,500–2,500 m (5,000–8,000 feet above sea level. While studies in high-altitude medicine have shown that all individuals experience some degree of hypoxia, cerebral edema, and increased cerebral blood flow, the neurological effects that accompany these changes are otherwise poorly understood. In this study, we report a case of acute subarachnoid hemorrhage from a ruptured cerebral aneurysm associated with travel on commercial aircraft. We then review relevant cases of neurological incidents with possible air travel-related etiology and discuss the physiological factors that may have contributed to the patient's acute subarachnoid hemorrhage. In the future, this report may serve as reference for more detailed and conservative medical guidelines and recommendations regarding air travel. Keywords: high-altitude, cabin pressure, emergency, cerebral edema, triage, neurological

  11. Cadenas productivas y disponibilidad de alimentos en Argentina Productive chains and food availability in Argentina

    Directory of Open Access Journals (Sweden)

    Malena Giai

    2010-06-01

    Full Text Available En abril de 2009 se conformó en la Asociación Argentina de Dietistas y Nutricionistas Dietistas el Grupo de Estudio sobre Soberanía Alimentaria, constituido por un grupo de Licenciados en Nutrición con interés en el tema. Como primer objetivo, el Grupo se propuso estudiar tres temas: "el Derecho a la Alimentación", "la Producción y Disponibilidad de alimentos en Argentina" y "la Canasta Básica de Alimentos". En el presente artículo se expone un resumen de los avances en el segundo tema mencionado.In April 2009, was formed in the Argentina Association of Dieticians and Nutritionists Dietitians the Study Group on Food Sovereignty, established by a group of graduates in nutrition with interest in the subject. As a first objective, the Group was to examine three issues: "The Right to Food", "Production and Availability of food in Argentina" and "Basic Food Basket." This article is a summary of progress on the second topic mentioned.

  12. Cell type specificity of female lung cancer associated with sulfur dioxide from air pollutants in Taiwan: An ecological study

    OpenAIRE

    Tseng Ching-Yu; Huang Yi-Chia; Su Shih-Yung; Huang Jing-Yang; Lai Cheng-Hsiu; Lung Chia-Chi; Ho Chien-Chang; Liaw Yung-Po

    2012-01-01

    Abstract Background Many studies have examined the association between air pollutants (including sulfur dioxide [SO2], carbon monoxide [CO], nitrogen dioxide [NO2], nitric oxide [NO], ozone [O3], and particulate matter < 10 μm [PM10]) and lung cancer. However, data from previous studies on pathological cell types were limited, especially for SO2 exposure. We aimed to explore the association between SO2 exposure from outdoor air pollutants and female lung cancer incidence by cell type specific...

  13. Do Variants in GSTs Modify the Association between Traffic Air Pollution and Asthma in Adolescence?

    Science.gov (United States)

    Bowatte, Gayan; Lodge, Caroline J.; Lowe, Adrian J.; Erbas, Bircan; Dennekamp, Martine; Marks, Guy B.; Perret, Jennifer; Hui, Jennie; Wjst, Matthias; Gurrin, Lyle C.; Allen, Katrina J.; Abramson, Michael J.; Matheson, Melanie C.; Dharmage, Shyamali C.

    2016-01-01

    Polymorphisms in genes involved in the oxidative stress response may partially explain the documented heterogeneous associations between traffic-related air pollution (TRAP) exposure and asthma and allergies in children. We investigated whether the GSTT1, GSTM1 and GSTP1 gene polymorphisms modified the associations between TRAP exposure during the first year of life and asthma, wheeze and hay fever in adolescence. We used a birth cohort of 620 high risk infants from the Melbourne Atopy Cohort Study. TRAP exposure during the first year of life was defined as the cumulative length of major roads within 150 m of each participant’s residence during the first year of life. Wheeze, asthma and hay fever were measured at ages 12 (n = 370) and 18 (n = 434) years. The associations and interactions with glutathione S-transferases (GST s) were investigated using regression models. Overall, there was no relationship between TRAP exposure during the first year of life and current asthma, wheeze and hay fever at ages 12 or 18 years. However, in GSTT1 null carriers, every 100 m increase in cumulative lengths of major road exposure during the first year of life was associated with a 2.31-fold increased risk of wheeze and a 2.15-fold increased risk of asthma at 12 years. TRAP is associated with some respiratory outcomes in carriers of genetic polymorphisms in oxidative stress metabolism genes. PMID:27043549

  14. AIRS retrieved CO2 and its association with climatic parameters over India during 2004–2011

    International Nuclear Information System (INIS)

    Atmospheric Infrared Sounder (AIRS) retrieved mid-tropospheric Carbon Dioxide (CO2) have been used to study the variability and its association with the climatic parameters over India during 2004 to 2011. The study also aims in understanding transport of CO2 from surface to mid-troposphere over India. The annual cycle of mid-tropospheric CO2 shows gradual increase in concentration from January till the month of May at the rate ∼ 0.6 ppm/month. It decreases continuously in summer monsoon (JJAS) at the same rate during which strong westerlies persists over the region. A slight increase is seen during winter monsoon (DJF). Being a greenhouse gas, annual cycle of CO2 show good resemblance with annual cycle of surface air temperature with correlation coefficient (CC) of + 0.8. Annual cycle of vertical velocity indicate inverse pattern compared to annual cycle of CO2. High values of mid-tropospheric CO2 correspond to upward wind, while low values of mid-tropospheric CO2 correspond to downward wind. In addition to vertical motion, zonal winds are also contributing towards the transport of CO2 from surface to mid-troposphere. Vegetation as it absorbs CO2 at surface level, show inverse annual cycle to that of annual cycle of CO2 (CC-0.64). Seasonal variation of rainfall-CO2 shows similarities with seasonal variation of NDVI-CO2. However, the use of long period data sets for CO2 at the surface and at the mid-troposphere will be an advantage to confirm these results. - Highlights: • Association of AIRS CO2 with climate parameters over India • CO2 show positive correlation with surface temperature • Vertical/horizontal winds contribute towards CO2 transport • Vegetation and monsoonal rainfall show inverse relationship with CO2

  15. Association between State Assistance on the Topic of Indoor Air Quality and School District-Level Policies That Promote Indoor Air Quality in Schools

    Science.gov (United States)

    Everett Jones, Sherry; Doroski, Brenda; Glick, Sherry

    2015-01-01

    Nationally representative data from the 2012 School Health Policies and Practices Study examined whether state assistance on indoor air quality (IAQ) was associated with district-level policies and practices related to IAQ and integrated pest management (IPM). Districts in states that provided assistance on IAQ were more likely than districts not…

  16. RERTR activities in Argentina

    International Nuclear Information System (INIS)

    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 U3O8 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 U3Si2 fuel with a density of 4.8 gU/cm3 and the improvement of the manufacturing process of this type of fuel. The program to qualify CNEA as a supplier U3Si2 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 99Mo, in the form of miniplates prepared with dispersed LEU U-Alx. 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. Case study - Argentina

    International Nuclear Information System (INIS)

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

  18. Desobediencia civil en Argentina

    OpenAIRE

    Gustavo Fondevila

    2003-01-01

    Resumen: La crisis económica de Argentina en años recientes derivó en la pérdida de legitimidad de las instituciones políticas del país. La medida de suspensión de las libertades y garantías de derechos individuales provocó una desobediencia civil generalizada que llevó a miles de personas a manifestar pacíficamente su repudio al gobierno de Fernando de la Rúa. Este gesto ciudadano espontáneo, desorganizado y voluntario sirvió, entre otras cosas, para formar una autodeterminación primaria di...

  19. The air quality impacts of road closures associated with the 2004 Democratic National Convention in Boston

    Directory of Open Access Journals (Sweden)

    Clougherty Jane E

    2006-05-01

    Full Text Available Abstract Background The Democratic National Convention (DNC in Boston, Massachusetts in 2004 provided an opportunity to evaluate the impacts of a localized and short-term but potentially significant change in traffic patterns on air quality, and to determine the optimal monitoring approach to address events of this nature. It was anticipated that the road closures associated with the DNC would both influence the overall air pollution level and the distribution of concentrations across the city, through shifts in traffic patterns. Methods To capture these effects, we placed passive nitrogen dioxide badges at 40 sites around metropolitan Boston before, during, and after the DNC, with the goal of capturing the array of hypothesized impacts. In addition, we continuously measured elemental carbon at three sites, and gathered continuous air pollution data from US EPA fixed-site monitors and traffic count data from the Massachusetts Highway Department. Results There were significant reductions in traffic volume on the highway with closures north of Boston, with relatively little change along other highways, indicating a more isolated traffic reduction rather than an across-the-board decrease. For our nitrogen dioxide samples, while there was a relatively small change in mean concentrations, there was significant heterogeneity across sites, which corresponded with our a priori classifications of road segments. The median ratio of nitrogen dioxide concentrations during the DNC relative to non-DNC sampling periods was 0.58 at sites with hypothesized traffic reductions, versus 0.88 for sites with no changes hypothesized and 1.15 for sites with hypothesized traffic increases. Continuous monitors measured slightly lower concentrations of elemental carbon and nitrogen dioxide during road closure periods at monitors proximate to closed highway segments, but not for PM2.5 or further from major highways. Conclusion We conclude that there was a small but

  20. Variation in summer surface air temperature over Northeast Asia and its associated circulation anomalies

    Science.gov (United States)

    Chen, Wei; Hong, Xiaowei; Lu, Riyu; Jin, Aifen; Jin, Shizhu; Nam, Jae-Cheol; Shin, Jin-Ho; Goo, Tae-Young; Kim, Baek-Jo

    2016-01-01

    This study investigates the interannual variation of summer surface air temperature over Northeast Asia (NEA) and its associated circulation anomalies. Two leading modes for the temperature variability over NEA are obtained by EOF analysis. The first EOF mode is characterized by a homogeneous temperature anomaly over NEA and therefore is called the NEA mode. This anomaly extends from southeast of Lake Baikal to Japan, with a central area in Northeast China. The second EOF mode is characterized by a seesaw pattern, showing a contrasting distribution between East Asia (specifically including the Changbai Mountains in Northeast China, Korea, and Japan) and north of this region. This mode is named the East Asia (EA) mode. Both modes contribute equivalently to the temperature variability in EA. The two leading modes are associated with different circulation anomalies. A warm NEA mode is associated with a positive geopotential height anomaly over NEA and thus a weakened upper-tropospheric westerly jet. On the other hand, a warm EA mode is related to a positive height anomaly over EA and a northward displaced jet. In addition, the NEA mode tends to be related to the Eurasian teleconnection pattern, while the EA mode is associated with the East Asia-Pacific/Pacific-Japan pattern.

  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. El intrusivo López Lecube: Evidencias de magmatismo alcalino Gondwánico en el sector sudoeste de la provincia de Buenos Aires, Argentina The López Lecube intrusive: evidence of Gondwanic alkaline magmatism in south-western Buenos Aires Province, Argentina

    Directory of Open Access Journals (Sweden)

    D.A. Gregori

    2003-06-01

    Full Text Available El Intrusivo López Lecube, de edad Pérmica, aflora en el sector SO de la Provincia de Buenos Aires, desconectado de rocas ígneas o sedimentarias que le hagan de caja. Está compuesto por una serie sienítica y una granítica, constituidas principalmente por cuarzo, feldespato potásico, hornblenda, plagioclasa y cantidades menores de titanita, biotita y apatito. Las características geoquímicas de la serie sienítica indican que ella deriva de magmas de manto y muestran rasgos peraluminosos a metaluminosos. Estas rocas se encuentran enriquecidas en LILE y deprimidos en HFSE. La serie granítica presenta una composición que se extiende desde levemente metaluminosa a peraluminosa, indicando participación de componentes corticales en su génesis. Esta serie no deriva de la serie sienítica mediante procesos de cristalización fraccionada. El evento magmático que generó el Intrusivo López Lecube se correlaciona con el ciclo magmático Gondwánico que se desarrolló en las Provincias de La Pampa y Mendoza, debido a sus similitudes en edad y composición química.The Permian López Lecube intrusive crops out in south-western Buenos Aires province, and is isolated from other igneous or sedimentary rocks. It consists of syenitic and granitic suites, composed mainly of quartz, K-feldspar, hornblende, plagioclase and subordinate titanite, biotite and apatite. The geochemical characteristics of the syenitic suite indicate that it was derived from mantle magmas with peralkaline and metaluminous signatures. The rocks are enriched in LILE and depleted in HFSE. The granitic suite shows slightly metaluminous to peraluminous compositions, indicating the participation of a crustal component in its genesis. The granites are not derived via crystal fractionation from the syenitic suite. The López Lecube intrusive event can be correlated with the magmatic Gondwanic cycle developed in La Pampa and Mendoza Provinces, on the basis of similarities in age and

  3. Air emissions associated with decommissioning California's offshore oil and gas platforms.

    Science.gov (United States)

    Cantle, Peter; Bernstein, Brock

    2015-10-01

    The 27 oil and gas platforms offshore southern California are nearing the end of their productive lives and will be decommissioned in the near future. Many are in deep water and are correspondingly large, with the largest, Harmony, in 1200 feet of water and weighing approximately 43,000 tons. Nearly 30% of California's platforms are in water depths that exceed those of any previous decommissioning project anywhere in the world. Decommissioning will involve the operation of diesel-powered heavy equipment for long periods in virtually all phases of the operation (e.g, at the platform, in transit to and from the platform, in port, at offloading, salvage, and recycling facilities) in a region where air quality is a crucial concern for state, federal, and local regulatory agencies, as well as the public. To support future decision making about the choice between decommissioning options, we consider potential air emissions generated under complete and partial (removal to 85 feet below water line) removal options. We describe major emissions categories, and the environmental and human health issues associated with each, and examine how the regulatory system would operate in specific projects. We then describe methods to estimate emissions for a worst-case example involving the largest platform, Harmony. We estimate that complete versus partial removal of Harmony would result, respectively, in 600 or 89 tons of NOx, 50 or 7 tons of carbon monoxide, 29,400 or 4400 tons of CO2 , 21 or 3 tons of PM10, and 20 or 3 tons of PM2.5. Complete removal of Harmony's jacket and topsides creates approximately 6.75 times more air pollution than partial removal down to 85 feet below the sea surface. We discuss how the Harmony estimate can be used as a baseline to roughly estimate emissions from decommissioning other platforms, using expected time on station for the major categories of decommissioning equipment. PMID:25914363

  4. Genetics and biology of Anastrepha fraterculus: research supporting the use of the sterile insect technique (SIT) to control this pest in Argentina

    OpenAIRE

    Cladera, Jorge L.; Vilardi, Juan C.; Juri, Marianela; Paulin, Laura E; Giardini, M Cecilia; Gómez Cendra, Paula V; Segura, Diego F.; Lanzavecchia, Silvia B

    2014-01-01

    Two species of true fruit flies (taxonomic family Tephritidae) are considered pests of fruit and vegetable production in Argentina: the cosmopolitan Mediterranean fruit fly (Ceratitis capitata Wiedemann) and the new world South American fruit fly (Anastrepha fraterculus Wiedemann). The distribution of these two species in Argentina overlaps north of the capital, Buenos Aires. Regarding the control of these two pests, the varied geographical fruit producing regions in Argentina are in differen...

  5. Activities with Argentina

    International Nuclear Information System (INIS)

    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. RERTR activities in Argentina

    International Nuclear Information System (INIS)

    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 U3O8 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 U3Si2 fuel with a density of 4.8 gU/cm3 and the improvement of the manufacturing process of U3Si2 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 Mo99. Experimental work has demonstrated the feasibility of the manufacturing and radiochemical processing of miniplate targets prepared with dispersed UAlx, maintaining the geometry and the alkaline processing of the HEU targets used so far. (author)

  7. Mortality, severe acute respiratory infection, and influenza-like illness associated with influenza A(H1N1pdm09 in Argentina, 2009.

    Directory of Open Access Journals (Sweden)

    Eduardo Azziz-Baumgartner

    Full Text Available INTRODUCTION: While there is much information about the burden of influenza A(H1N1pdm09 in North America, little data exist on its burden in South America. METHODS: During April to December 2009, we actively searched for persons with severe acute respiratory infection and influenza-like illness (ILI in three sentinel cities. A proportion of case-patients provided swabs for influenza testing. We estimated the number of case-patients that would have tested positive for influenza by multiplying the number of untested case-patients by the proportion who tested positive. We estimated rates by dividing the estimated number of case-patients by the census population after adjusting for the proportion of case-patients with missing illness onset information and ILI case-patients who visited physicians multiple times for one illness event. RESULTS: We estimated that the influenza A(H1N1pdm09 mortality rate per 100,000 person-years (py ranged from 1.5 among persons aged 5-44 years to 5.6 among persons aged ≥ 65 years. A(H1N1pdm09 hospitalization rates per 100,000 py ranged between 26.9 among children aged <5 years to 41.8 among persons aged ≥ 65 years. Influenza A(H1N1pdm09 ILI rates per 100 py ranged between 1.6 among children aged <5 to 17.1 among persons aged 45-64 years. While 9 (53% of 17 influenza A(H1N1pdm09 decedents with available data had obesity and 7 (17% of 40 had diabetes, less than 4% of surviving influenza A(H1N1pdm09 case-patients had these pre-existing conditions (p ≤ 0.001. CONCLUSION: Influenza A(H1N1pdm09 caused a similar burden of disease in Argentina as in other countries. Such disease burden suggests the potential value of timely influenza vaccinations.

  8. Association between air pollution and daily mortality and hospital admission due to ischaemic heart diseases in Hong Kong

    Science.gov (United States)

    Tam, Wilson Wai San; Wong, Tze Wai; Wong, Andromeda H. S.

    2015-11-01

    Ischaemic heart disease (IHD) is one of the leading causes of death worldwide. The effects of air pollution on IHD mortalities have been widely reported. Fewer studies focus on IHD morbidities and PM2.5, especially in Asia. To explore the associations between short-term exposure to air pollution and morbidities and mortalities from IHD, we conducted a time series study using a generalized additive model that regressed the daily numbers of IHD mortalities and hospital admissions on daily mean concentrations of the following air pollutants: nitrogen dioxide (NO2), particulate matter with an aerodynamic diameter less than 10 μm (PM10), particulate matter with an aerodynamic diameter less than 2.5 μm (PM2.5), ozone (O3), and sulfur dioxide (SO2). The relative risks (RR) of IHD deaths and hospital admissions per 10 μg/m3 increase in the concentration of each air pollutant were derived in single pollutant models. Multipollutant models were also constructed to estimate their RRs controlling for other pollutants. Significant RRs were observed for all five air pollutants, ranging from 1.008 to 1.032 per 10 μg/m3 increase in air pollutant concentrations for IHD mortality and from 1.006 to 1.021 per 10 μg/m3 for hospital admissions for IHD. In the multipollutant model, only NO2 remained significant for IHD mortality while SO2 and PM2.5 was significantly associated with hospital admissions. This study provides additional evidence that mortalities and hospital admissions for IHD are significantly associated with air pollution. However, we cannot attribute these health effects to a specific air pollutant, owing to high collinearity between some air pollutants.

  9. Influence of air quality model resolution on uncertainty associated with health impacts

    Directory of Open Access Journals (Sweden)

    T. M. Thompson

    2012-06-01

    Full Text Available We use regional air quality modeling to evaluate the impact of model resolution on uncertainty associated with the human health benefits resulting from proposed air quality regulations. Using a regional photochemical model (CAMx, we ran a modeling episode with meteorological inputs representing conditions as they occurred during August through September 2006, and two emissions inventories (a 2006 base case and a 2018 proposed control scenario, both for Houston, Texas at 36, 12, 4 and 2 km resolution. The base case model performance was evaluated for each resolution against daily maximum 8-h averaged ozone measured at monitoring stations. Results from each resolution were more similar to each other than they were to measured values. Population-weighted ozone concentrations were calculated for each resolution and applied to concentration response functions (with 95% confidence intervals to estimate the health impacts of modeled ozone reduction from the base case to the control scenario. We found that estimated avoided mortalities were not significantly different between 2, 4 and 12 km resolution runs, but 36 km resolution may over-predict some potential health impacts. Given the cost/benefit analysis requirements of the Clean Air Act, the uncertainty associated with human health impacts and therefore the results reported in this study, we conclude that health impacts calculated from population weighted ozone concentrations obtained using regional photochemical models at 36 km resolution fall within the range of values obtained using fine (12 km or finer resolution modeling. However, in some cases, 36 km resolution may not be fine enough to statistically replicate the results achieved using 2 and 4 km resolution. On average, when modeling at 36 km resolution, 7 deaths per ozone month were avoided because of ozone reductions resulting from the proposed emissions reductions (95% confidence interval was 2–9. When modeling at 2, 4 or 12 km finer

  10. Influence of air quality model resolution on uncertainty associated with health impacts

    Directory of Open Access Journals (Sweden)

    T. M. Thompson

    2012-10-01

    Full Text Available We use regional air quality modeling to evaluate the impact of model resolution on uncertainty associated with the human health benefits resulting from proposed air quality regulations. Using a regional photochemical model (CAMx, we ran a modeling episode with meteorological inputs simulating conditions as they occurred during August through September 2006 (a period representative of conditions leading to high ozone, and two emissions inventories (a 2006 base case and a 2018 proposed control scenario, both for Houston, Texas at 36, 12, 4 and 2 km resolution. The base case model performance was evaluated for each resolution against daily maximum 8-h averaged ozone measured at monitoring stations. Results from each resolution were more similar to each other than they were to measured values. Population-weighted ozone concentrations were calculated for each resolution and applied to concentration response functions (with 95% confidence intervals to estimate the health impacts of modeled ozone reduction from the base case to the control scenario. We found that estimated avoided mortalities were not significantly different between the 2, 4 and 12 km resolution runs, but the 36 km resolution may over-predict some potential health impacts. Given the cost/benefit analysis requirements motivated by Executive Order 12866 as it applies to the Clean Air Act, the uncertainty associated with human health impacts and therefore the results reported in this study, we conclude that health impacts calculated from population weighted ozone concentrations obtained using regional photochemical models at 36 km resolution fall within the range of values obtained using fine (12 km or finer resolution modeling. However, in some cases, 36 km resolution may not be fine enough to statistically replicate the results achieved using 2, 4 or 12 km resolution. On average, when modeling at 36 km resolution, an estimated 5 deaths per week during the May through September ozone

  11. 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 ...

  12. 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.

  13. Efecto del sistema de manejo de suelo en el desarrollo de raices, absorción de agua y productividad en una rotación soja-trigo en la provincia de Buenos Aires, Argentina

    OpenAIRE

    Barrios, Mónica Beatriz

    2010-01-01

    La degradación de los suelos se ha propagado en el mundo a un ritmo acelerado en los últimos 50 años. Es de esperar que la presión sobre el recurso suelo sea cada vez mayor, teniendo en cuenta el sostenido aumento de la población mundial. Actualmente en Argentina tiene lugar un proceso de reemplazo de sistemas de producción tradicionales por sistemas de producción de "commodities" a gran escala. Ecosistemas marginales están siendo incorporados a la producción, dando como resultado la fragi...

  14. Observational studies of the meteorological characteristics associated with poor air quality over the Pearl River Delta in China

    OpenAIRE

    Wu, M.(Enrico Fermi Institute, University of Chicago, Chicago, IL, United States of America); Wu, D.; Fan, Q.; B. M. Wang; Li, H W; S. J. Fan

    2013-01-01

    The structure of the atmospheric boundary layer (ABL) and its influence on regional air quality over the Pearl River Delta (PRD) were examined through two intensive observations in October 2004 and July 2006. Analytical results show the presence of two types of typical weather conditions associated with poor air quality over the PRD. The first is the warm period before a cold front (WPBCF) and the second is the subsidence period controlled by a tropical cyclone (SPCTC). Two ...

  15. GeoMedStat: an integrated spatial surveillance system to track air pollution and associated healthcare events

    OpenAIRE

    Faruque, Fazlay S.; Hui Li; Worth B. Williams; Waller, Lance A.; Bruce T. Brackin; Lei Zhang; Kim A. Grimes; Richard W. Finley

    2014-01-01

    Air pollutants, such as particulate matter with a diameter ≤2.5 microns (PM2.5) and ozone (O3), are known to exacerbate asthma and other respiratory diseases. An integrated surveillance system that tracks such air pollutants and associated disease incidence can assist in risk assessment, healthcare preparedness and public awareness. However, the implementation of such an integrated environmental health surveillance system is a challenge due to the disparate sources of many types of data and t...

  16. Association between Long-Term Exposure to Traffic-Related Air Pollution and Subclinical Atherosclerosis: The REGICOR Study

    OpenAIRE

    Rivera, Marcela; Basagaña, Xavier; Aguilera, Immaculada; Foraster, María; Agis, David; Groot, Eric de; Pérez, Laura; Méndez, Michelle A.; Bouso, Laura; TARGA Jaume; Ramos Blanes, Rafel; Sala, Joan; Marrugat, Jaume; Elosua, Roberto; Künzli, Nino

    2012-01-01

    Background: Epidemiological evidence of the effects of long-term exposure to air pollu tion on the chronic processes of athero genesis is limited. Objective: We investigated the association of long-term exposure to traffic-related air pollu tion with subclinical atherosclerosis, measured by carotid intima media thickness (IMT) and ankle–brachial index (ABI). Methods: We performed a cross-sectional analysis using data collected during the reexamination (2007–2010) of 2,780 participants in the...

  17. The use of chained two-point clusters for the examination of associations of air pollution with health conditions

    OpenAIRE

    Mieczysław Szyszkowicz; Wesley S. Burr

    2016-01-01

    Objectives: There are a few accepted and intensively applied statistical methods used to study associations of ambient air pollution with health conditions. Among the most popular methods applied to assess short term air health effects are case-crossover (using events) and time-series methodologies (using counts). A few other techniques for studying counts of events have been proposed, including the Generalized Linear Mixed Models (GLMM). One suggested GLMM technique uses cluster structures b...

  18. Associations between air pollution and socioeconomic characteristics, ethnicity and age profile of neighbourhoods in England and the Netherlands

    International Nuclear Information System (INIS)

    Air pollution levels are generally believed to be higher in deprived areas but associations are complex especially between sensitive population subgroups. We explore air pollution inequalities at national, regional and city level in England and the Netherlands comparing particulate matter (PM10) and nitrogen dioxide (NO2) concentrations and publicly available population characteristics (deprivation, ethnicity, proportion of children and elderly). We saw higher concentrations in the most deprived 20% of neighbourhoods in England (1.5 μg/m3 higher PM10 and 4.4 μg/m3 NO2). Concentrations in both countries were higher in neighbourhoods with >20% non-White (England: 3.0 μg/m3 higher PM10 and 10.1 μg/m3 NO2; the Netherlands: 1.1 μg/m3 higher PM10 and 4.5 μg/m3 NO2) after adjustment for urbanisation and other variables. Associations for some areas differed from the national results. Air pollution inequalities were mainly an urban problem suggesting measures to reduce environmental air pollution inequality should include a focus on city transport. - Highlights: • Air pollution inequalities are believed to vary between subpopulations. • We explore this across two European countries at different geographical levels. • We found that air pollution inequalities are largely an urban problem. • Ethnically diverse neighbourhoods have the highest air pollution levels. • Associations vary across two countries that might be thought to be quite similar. - Air pollution inequalities are largely an urban problem and associations with deprivation and ethnicity vary even across two European countries that might be thought to be quite similar

  19. Research reactors in Argentina

    International Nuclear Information System (INIS)

    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

  20. Operating practical experience at Argentina

    International Nuclear Information System (INIS)

    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

  1. A Patient from Argentina Infected with Rickettsia massiliae

    OpenAIRE

    García-García, Juan Carlos; Portillo, Aránzazu; Núñez, Manuel J.; Santibáñez, Sonia; Castro, Begoña; Oteo, José A

    2010-01-01

    The first confirmed case of Rickettsia massiliae infection in the New World (Buenos Aires, Argentina) is described. To date, only two cases of human infection had been reported in Europe. The patient, a woman, had a fever, a palpable purpuric rash on the upper and lower extremities, and a skin lesion (eschar) on the right leg compatible with tache noire. When interviewed, she reported having had contact with dog ticks. After treatment with doxycycline for 12 days, her symptoms resolved. Ricke...

  2. Las Iglesias Cristianas Reformadas en Argentina: una historia reciente

    OpenAIRE

    Lértora-Mendoza, C.A. (Celina A.)

    2015-01-01

    The history of evangelical Christianity in Argentina is as old as the country itself. Several Reformed communities settled in Buenos Aires and various cities and towns of the interior; this history, recorded through numerous studies, shows different views and facets of the complex and nuanced historical reality. Concerning recent decades, several historiographical problems mentioned in the introduction can be perceived. The work is divided into the following parts. First, the history of ev...

  3. Soft rocks in Argentina

    Institute of Scientific and Technical Information of China (English)

    Giambastiani; Mauricio

    2014-01-01

    Soft rocks are a still fairly unexplored chapter in rock mechanics. Within this category are the clastic sedimentary rocks and pyroclastic volcanic rocks, of low to moderate lithification (consolidation, cemen-tation, new formed minerals), chemical sedimentary rocks and metamorphic rocks formed by minerals with Mohs hardness less than 3.5, such as limestone, gypsum, halite, sylvite, between the first and phyllites, graphitic schist, chloritic shale, talc, etc., among the latter. They also include any type of rock that suffered alteration processes (hydrothermal or weathering). In Argentina the study of low-strength rocks has not received much attention despite having extensive outcrops in the Andes and great impact in the design criteria. Correlation between geomechanical properties (UCS, deformability) to physical index (porosity, density, etc.) has shown promising results to be better studied. There are many studies and engineering projects in Argentina in soft rock geological environments, some cited in the text (Chihuído dam, N. Kirchner dam, J. Cepernic Dam, etc.) and others such as International Tunnel in the Province of Mendoza (Corredor Bioceánico), which will require the valuable contribution from rock mechanics. The lack of consistency between some of the physical and mechanical parameters explored from studies in the country may be due to an insufficient amount of information and/or non-standardization of criteria for testing materials. It is understood that more and better academic and professional efforts in improv-ing techniques will result in benefits to the better understanding of the geomechanics of weak rocks.

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

    International Nuclear Information System (INIS)

    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

  5. Burnout, Perceived Stress, and Depression among Cardiology Residents in Argentina

    Science.gov (United States)

    Waldman, Silvina V.; Diez, Juan Cruz Lopez; Arazi, Hernan Cohen; Linetzky, Bruno; Guinjoan, Salvador; Grancelli, Hugo

    2009-01-01

    Objective: Because medical residency is a stressful time for training physicians, placing residents at increased risk for psychological distress, the authors studied the prevalence of burnout, perceived stress, and depression in cardiology residents in Argentina and examined the association between sociodemographic characteristics and these…

  6. Air Quality Management Using Modern Remote Sensing and Spatial Technologies and Associated Societal Costs

    Directory of Open Access Journals (Sweden)

    Waheed Uddin

    2006-09-01

    Full Text Available This paper presents a study of societal costs related to public health due to the degradation of air quality and the lack of physical activity, both affected by our built environment. The paper further shows road safety as another public health concern. Traffic fatalities are the number one cause of death in the world. Traffic accidents result in huge financial loss to the people involved and the related public health cost is a significant part of the total societal cost. Motor vehicle exhausts and industrial emissions, gasoline vapors, and chemical solvents as well as natural sources emit nitrogen oxides and volatile organic compounds, which are precursors to the formation of ground-level Ozone. High concentration values of ground-level Ozone in hot summer days produce smog and lead to respiratory problems and loss in worker’s productivity. These factors and associated economic costs to society are important in establishing public policy and decision-making for sustainable transportation and development of communities in both industrialized and developing countries. This paper presents new science models for predicting ground-level Ozone and related air quality degradation. The models include predictor variables of daily climatological data, traffic volume and mix, speed, aviation data, and emission inventory of point sources. These models have been implemented in the user friendly AQMAN computer program and used for a case study in Northern Mississippi. Lifecycle benefits from reduced societal costs can be used to implement sustainable transportation policies, enhance investment decision-making, and protect public health and the environment.

  7. The association between ambient air pollution and daily mortality in Beijing after the 2008 olympics: a time series study.

    Directory of Open Access Journals (Sweden)

    Yang Yang

    Full Text Available In recent decades, ambient air pollution has been an important public health issue in Beijing, but little is known about air pollution and health effects after the 2008 Beijing Olympics. We conduct a time-series analysis to evaluate associations between daily mortality (nonaccidental, cardiovascular and respiratory mortality and the major air pollutants (carbon monoxide, nitrogen dioxide and particulate matter less than 10 µm in aerodynamic diameter in Beijing during the two years (2009,2010 after the 2008 Beijing Olympics. We used generalized additive model to analyze relationship between daily mortality and air pollution. In single air pollutant model with two-day moving average concentrations of the air pollutants, increase in their interquartile range (IQR associated with percent increase in nonaccidental mortality, 2.55 percent [95% confidence interval (CI: 1.99, 3.11] for CO, 2.54 percent (95% CI: 2.00, 3.08 for NO2 and 1.80 percent (95% CI: 1.21, 2.40 for PM10, respectively; increases in the IQR of air pollutant concentrations associated with percent increase in cardiovascular mortality, 2.88 percent (95% CI: 2.10,3.65 for CO, 2.63 percent (95% CI: 1.87, 3.39 for NO2 and 1.72 percent (95% CI: 0.88, 2.55 for PM10, respectively; and increase in IQR of air pollutant concentrations associated with respiratory mortality, 2.39 percent (95% CI: 0.68, 4.09 for CO, 1.79 percent (95% CI: 0.11, 3.47 for NO2 and 2.07 percent (95% CI: 0.21, 3.92 for PM10, respectively. We used the principal component analysis to avoid collinearity of varied air pollutants. In addition, the association stratified by sex and age was also examined. Ambient air pollution remained a significant contributor to nonaccidental and cardiopulmonary mortalities in Beijing during 2009,2010.

  8. Equine leukoencephalomalacia (ELEM due to fumonisins B1 and B2 in Argentina

    Directory of Open Access Journals (Sweden)

    Federico Giannitti

    2011-05-01

    Full Text Available In August 2007 an outbreak of neurological disease and sudden death in Arabian horses occurred in a farm located in Coronel Rosales County, Buenos Aires Province, Argentina. The animals were on a pasture of native grasses and supplemented ad libitum with corn kernels and wheat bran. Three horses were observed having acute neurologic signs including blindness, four leg ataxia, hyperexcitability, aimless walking and circling, followed by death in two of them. Four other horses were found dead overnight without a history of neurologic signs. The morbidity, mortality and lethality rates were 11.6%, 10% and 85.7%, respectively. Grossly, the brain showed focal areas of hemorrhage, brown-yellow discoloration and softening of the sub-cortical white matter. The microscopic brain lesions consisted of extensive areas of malacia within the white matter of the cerebral hemispheres, brainstem and cerebellum, characterized by rarefaction of the white matter with cavitations filled with proteinaceous edema, multifocal hemorrhages and mild infiltration by neutrophils, and rare eosinophils. Swollen glial cells with abundant eosinophilic cytoplasm, distinct cell borders, intracytoplasmic deeply eosinophilic globules and eccentric, hyperchromatic, occasionally pyknotic nucleus were present throughout the areas of rarefaction hemorrhage, edema and necrosis. The feed supplements contained 12,490µg/kg of fumonisin B1 and 5,251µg/ kg of fumonisin B2. This is the first reported outbreak of ELEM associated with consumption of feed supplements containing high concentrations of fumonisins in Argentina.

  9. Prevalence and Correlates of Lifetime Suicide Attempts Among Transgender Persons in Argentina.

    Science.gov (United States)

    Marshall, Brandon D L; Socías, María Eugenia; Kerr, Thomas; Zalazar, Virginia; Sued, Omar; Arístegui, Inés

    2016-07-01

    This study examined the lifetime prevalence and correlates of attempted suicide among transgender persons in Argentina. Data were derived from a nation-wide, cross-sectional survey conducted in 2013. We assessed individual, social, and structural correlates of reporting a history of attempting suicide using logistic regression. Among 482 participants, the median age was 30, 91% identified as transwomen, and 32% resided in the Buenos Aires metropolitan area. A lifetime suicide attempt was reported by 159 (33%), among whom the median age at first attempt was 17. In a multivariate model, internalized stigma was positively associated with a history of suicidal behavior, while participants with stable housing had reduced odds of prior suicide attempt(s). These findings suggest that reducing stigma and mitigating structural vulnerabilities (through, for example, the enactment and enforcement of laws that prohibit discrimination based on gender identity to ensure equitable access to housing) could be effective targets for intervention to reduce suicide attempts among transgender individuals in Argentina. PMID:26566683

  10. 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"

  11. An association between air pollution and daily outpatient visits for respiratory disease in a heavy industry area.

    Directory of Open Access Journals (Sweden)

    Kuo-Ying Wang

    Full Text Available In this work we used daily outpatient data from the Landseed Hospital in a heavily industrial area in northern Taiwan to study the associations between daily outpatient visits and air pollution in the context of a heavily polluted atmospheric environment in Chung-Li area during the period 2007-2011. We test the normality of each data set, control for the confounding factors, and calculate correlation coefficient between the outpatient visits and air pollution and meteorology, and use multiple linear regression analysis to seek significance of these associations. Our results show that temperature and relative humidity tend to be negatively associated with respiratory diseases. NO and [Formula: see text] are two main air pollutants that are positively associated with respiratory diseases, followed by [Formula: see text], [Formula: see text], [Formula: see text], CO, and [Formula: see text]. Young outpatients (age 0-15 years are most sensitive to changing air pollution and meteorology factors, followed by the eldest (age [Formula: see text]66 years and age 16-65 years of outpatients. Outpatients for COPD diseases are most sensitive to air pollution and meteorology factors, followed by allergic rhinitis, asthma, and pneumonia diseases. In the context of sex difference to air pollution and meteorological factors, male outpatients are more sensitive than female outpatients in the 16-65 age groups, while female outpatients are more sensitive than male outpatients in the young 0-15 age groups and in the eldest age groups. In total, female outpatients are more sensitive to air pollution and meteorological factors than male outpatients.

  12. Carmody, Patricio Mateo. Buscando consensos al fin del mundo: hacia una política exterior Argentina con consensos (2015-2027) : Buenos Aires, Consejo Argentino para las Relaciones Internacionales (CARI), Buenos Aires, 2015, 237 páginas

    OpenAIRE

    Riva, Macarena

    2015-01-01

    Esta publicación es una continuación del trabajo “Política exterior al fin del mundo. Argentina, Brasil y Chile en el tiempo democrático (1983-2010)”, en el cual el autor analiza los niveles de consenso en materia de política exterior de estos tres países latinoamericanos, concluyendo que, mientras en Brasil y en Chile existe cierto grado de consenso, en Argentina hay “desacuerdos básicos” en su política internacional. Ante tal panorama, Carmody se plantea si es posible diseñar una política e...

  13. - Bacillus anthracis, utilización de un Sistema de Información Geográfico (SIG, para el análisis espacio temporal de 54 brotes de carbunclo rural en el partido de Azul, Bs. As., Argentina (Bacillus anthracis, use of a Geographical infoormation Service (GIS, for the temporary space analysis of 54 outbreaks of rural anthax in the county of Azul, Province of Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Vazquez P.

    2006-02-01

    Full Text Available Resumen. El objeto de este trabajo es utilizar un Sistema de Información Geográfico (SIG para el análisis epidemiológico del Carbunclo Rural aplicado a un ecosistema ganadero, integrado por 618.000 bovinos, distribuidos en 1.350 establecimientos del partido de Azul, Provincia de Buenos Aires, Argentina. Esto permitió estudiar hechos epidemiológicos de una enfermedad de antigua data como es el Carbunclo Rural. Su agente causal el Bacillus anthracis, posee la característica de formar esporos que permite mantenerse durante decenas de años en el ambiente com capacidad de transmitir la enfermedad a otrois animales susceptibles. Se describe la metodología para su diagnóstico y los distintos elementos que integran el Sistema de Información Geográfico. Los 54 brotes identificados entre los años 1989 / 2005 fueron georreferenciados para posteriormente relacionarlos con las vías de avenamiento de aguas del partido de Azul, lãs características de sus suelos y la ubicación de las poblaciones de las poblaciones rurales que comparten la zona de isorriesgo. Se plantea un sistema de alerta epidemiológico temprano para establecimientos ganaderos que comparten vías de avenamiento de agua en común con el brote de Carbunclo diagnosticado. El 93 % de los brotes ocurrieron en establecimientos que comparten vías de avenamiento, mientras que el 7 % restante en establecimientos ganaderos ubicados fuera del área de influencia de estas vías Summary. The objjective of this study was the use of a Geographical Information Service (GIS for the epidemiologiacal analysis of rural Anthrax applied to a catle ecosystem, which includes 618.000 cattle, distributed on 1.350 farms in the county of Azul, Province of Buenos Aires, Argentina. This allowed studying long past epidemiological occurrences of a disease such as rural carbuncle Its causing egent is Bacillus anthracis, which has the property of forming spores That permit being maintained dozens of years in

  14. The research reactor as a tool in the master in nuclear reactors in Argentina

    International Nuclear Information System (INIS)

    The Master in Nuclear Reactors was created in 1998, in the frame of an agreement between the National Technological University and the Atomic Energy Commission of Argentina. The career was created in Buenos Aires faculty with an academic order which established the general frame and necessary contents. The career provides the students with a general knowledge about the technology of nuclear reactors and the principal disciplines involved. This allows their insertion in the professional field in any of the principal branches, either in basic studies or applied work. Since the very beginning, the performance of selected experiments in a nuclear reactor was recognized as an extraordinary tool to give the students an insight in the principal phenomena associated with the chain reaction and the related engineering problems. (author)

  15. Results in a recycling program for household waste in Quilmes (Argentina)

    International Nuclear Information System (INIS)

    The production of solid waste in many Latin American urban districts creates urgent and progressive environmental problems associated with its frequent disposal in landfills. The recovery of waste is a relatively more appropriate alternative in terms of pollution and natural resource extraction. To this end was developed a recycling program in the urban district of Quilmes, Buenos Aires province, Argentina. This work analyze, on the basis of interviews and a survey of solid waste, the characteristics, achievements and difficulties of the task undertaken by the government to achieve the objectives of the program. Casting light on this is substantial for rethinking the management and initiate new more successful and responsible projects in the comprehensive treatment of domestic waste.

  16. Association between dietary habits, education, serum triglycerides and blood cholesterol among women of Cabildo, Buenos Aires Asociación entre hábitos nutricionales, educación, triglicéridos séricos y colesterol total en mujeres de Cabildo, Buenos Aires

    OpenAIRE

    Raúl J. Schneider; Noel Barengo; Irja Haapala; Marcelo Tavella

    2006-01-01

    A cross sectional study of 107 women between 20 and 69 years old, living in the town of Cabildo, province of Buenos Aires, Argentina, which describes food intake and analyses its relation to their education, blood cholesterol and serum triglyceride levels. A food frequency questionnaire including questions regarding meal patterns and food use were completed by the participants. Questions regarding educational status were included. A nutritional risk score was created from nine food groups. To...

  17. Estudios de interés tafonómico en los restos óseos humanos de Laguna Tres Reyes 1 (Partido de Adolfo Gonzales Chaves, provincia de Buenos Aires Taphonomic studies of human bones from Laguna Tres Reyes 1 (Gonzales Chaves District, Buenos Aires province, Argentina

    Directory of Open Access Journals (Sweden)

    Mariela Edith González

    2007-12-01

    Full Text Available En este trabajo se presentan los resultados del análisis de los efectos tafonómicos del registro bioarqueológico del sitio Laguna Tres Reyes 1 (Partido de Adolfo Gonzales Chaves, realizado en el marco de la tesis de licenciatura. La metodología consistió en el examen macroscópico de la superficie cortical de cada elemento esqueletal sobre el conjunto de entierros primarios. Las variables analizadas fueron: marcas de raíces, depositación química (carbonato de calcio y manchas de manganeso, pérdida ósea, fracturas, actividad de roedores, acción de carnívoros, marcas de excavación y limpieza, meteorización e integridad. Los resultados indican la interacción de una serie de agentes y procesos tafonómicos sobre los huesos humanos que condujeron a una historia tafonómica compleja y de baja intensidad, permitiendo una muy buena preservación del tejido óseo. Los roedores han perturbado este registro fundamentalmente en el aspecto distribucional dejando escasas marcas de su accionar sobre los elementos óseos. Por otro lado, existen evidencias de la acción de pequeños carnívoros sobre algunos esqueletos que sugieren que estos animales habrían accedido a ellos deslizándose por los túneles y cuevas excavados por los roedores.This paper presents the results of taphonomic research carried out on the bioarchaeological record of the Laguna Tres Reyes 1 site (Buenos Aires Province, Argentina. The variables analyzed were root etching, chemical deposition (calcium carbonate coating and manganese staining, bone destruction, fractures, rodent and carnivore activities, excavation and cleaning marks, weathering, and bone integrity. Based on a macroscopic examination of the surface of the human bones found at the site, this study shows that the skeletons were affected by the activity of small rodents, which left scarce traces on the bones. It is also suggested that small-sized carnivores were able to reach the burials through tunnels

  18. Estratigrafía, facies y evolución depositacional de la Formación Sauce Grande (Carbonífero Superior: Cuenca Sauce Grande, Sierras Australes, Buenos Aires, Argentina Stratigraphy, facies and depositional evolution of the Sauce Grande Formation (Upper Carboniferous: Sauce Grande Basin, Sierras Australes, Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    R. R. Andreis

    2003-06-01

    . The unit is composed of abundant diamictites [Dmm1, Dmm2, Dmg, Dms, Dms(r ], as well as sandstones (Sma, Smw, Sh, Sr, Sp, shales (Fm, Fl, Fd, and scarce conglomerates (Dcm, Dcg. The ciclicity was also analized, recognising three megacycles (lower, middle, and upper, with their respective lithofacies association. The lower megacycle allows a view of the Devonian paleorelief (Lolén Formation, and is composed by abundant diamictites, sandstones and scarce conglomerates. The middle megacycle contains sandstones and conglomerates and in the upper megacycle it is possible to see the diminuition in the frequence of diamictites (containing abundant dropstones partially replaced by sandstones and shales (in this case, only in the north profile. In the lower and upper megacycles, the Dmm1, Dmm2 and Dms(r facies, with decametric thickness and spread-out by hundred of meters, are the more conspicuous members, and are related to semiconsolidated or fluid cohesive debris flows, generated at proximal strong slopes. It is probable that the diamictites of the upper megacycle can be of the rain out type. The Dms(r includes contortioned or oriented sand bodies and frequent shaly intraclasts. The conglomerates represent non coesive deposits leaved by hiperconcentrated flows or grain flows. The Sma sandstones were deposited by suspensive dense flows, while Smw represent fine and dense suspensive flows transitional to liquefact flows. The other sandstones represent wave or current action (Sr or frontal accretion of transversal bars or sand dunes, by traccional currents. The beginning of the depositional processes was characterized by a rapid transgressive process during the Late Carboniferous under moderate subsidence conditions (eustatic processes. The lower megacicle is characterised by a slope-apron or debris-apron, localized near the continental talus, with strong aggradation and rare progradation. These conditions depend almost on the thermal regime of the cold base glaciers at South

  19. Spatial and temporal associations of road traffic noise and air pollution in London: Implications for epidemiological studies.

    Science.gov (United States)

    Fecht, Daniela; Hansell, Anna L; Morley, David; Dajnak, David; Vienneau, Danielle; Beevers, Sean; Toledano, Mireille B; Kelly, Frank J; Anderson, H Ross; Gulliver, John

    2016-03-01

    Road traffic gives rise to noise and air pollution exposures, both of which are associated with adverse health effects especially for cardiovascular disease, but mechanisms may differ. Understanding the variability in correlations between these pollutants is essential to understand better their separate and joint effects on human health. We explored associations between modelled noise and air pollutants using different spatial units and area characteristics in London in 2003-2010. We modelled annual average exposures to road traffic noise (LAeq,24h, Lden, LAeq,16h, Lnight) for ~190,000 postcode centroids in London using the UK Calculation of Road Traffic Noise (CRTN) method. We used a dispersion model (KCLurban) to model nitrogen dioxide, nitrogen oxide, ozone, total and the traffic-only component of particulate matter ≤2.5μm and ≤10μm. We analysed noise and air pollution correlations at the postcode level (~50 people), postcodes stratified by London Boroughs (~240,000 people), neighbourhoods (Lower layer Super Output Areas) (~1600 people), 1km grid squares, air pollution tertiles, 50m, 100m and 200m in distance from major roads and by deprivation tertiles. Across all London postcodes, we observed overall moderate correlations between modelled noise and air pollution that were stable over time (Spearman's rho range: |0.34-0.55|). Correlations, however, varied considerably depending on the spatial unit: largest ranges were seen in neighbourhoods and 1km grid squares (both Spearman's rho range: |0.01-0.87|) and was less for Boroughs (Spearman's rho range: |0.21-0.78|). There was little difference in correlations between exposure tertiles, distance from road or deprivation tertiles. Associations between noise and air pollution at the relevant geographical unit of analysis need to be carefully considered in any epidemiological analysis, in particular in complex urban areas. Low correlations near roads, however, suggest that independent effects of road noise and

  20. Association between particulate air pollution and venous thromboembolism: A systematic literature review.

    Science.gov (United States)

    Franchini, Massimo; Mengoli, Carlo; Cruciani, Mario; Bonfanti, Carlo; Mannucci, Pier Mannuccio

    2016-01-01

    Air pollution is a leading global problem for public health. A number of ambient pollutants have been involved, including carbon monoxide (CO), nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3) and particulate matter (PM). Although exposure to PM has been linked to a wide array of cardiovascular and respiratory disorders, its effect on venous thrombotic disorders is still uncertain. To elucidate this issue, we have performed a systematic review on the existing literature on the association between PM and venous thromboembolism (VTE), using MEDLINE, EMBASE and Cochrane electronic databases. Of the 158 reviewed studies, 11 of them (3 case-crossover studies, 2 time-series studies, 2 case-control studies, 2 prospective cohort studies, 2 retrospective studies) involving more than 500,000 events fulfilled the inclusion criteria and results are presented here. Because there was substantial heterogeneity in study design, duration of follow-up, statistical measure of effects, clinical outcomes and threshold, we refrained to perform a quantitative analysis of the available data and carried out only a systematic review. Overall, the literature data suggest a link between PM and VTE, but further trials on larger populations of patients with homogeneous study designs and outcomes are warranted. PMID:26639051

  1. An Evaluation of Uncertainty Associated to Analytical Measurements of Selected Polycyclic Aromatic Compounds in Ambient Air

    International Nuclear Information System (INIS)

    This paper presents an evaluation of uncertainty associated to analytical measurement of eighteen polycyclic aromatic compounds (PACs) in ambient air by liquid chromatography with fluorescence detection (HPLC/FD). The study was focused on analyses of PM10, PM2.5 and gas phase fractions. Main analytical uncertainty was estimated for eleven polycyclic aromatic hydrocarbons (PAHs), four nitro polycyclic aromatic hydrocarbons (nitro-PAHs) and two hydroxy polycyclic aromatic hydrocarbons (OH-PAHs) based on the analytical determination, reference material analysis and extraction step. Main contributions reached 15-30% and came from extraction process of real ambient samples, being those for nitro- PAHs the highest (20-30%). Range and mean concentration of PAC mass concentrations measured in gas phase and PM10/PM2.5 particle fractions during a full year are also presented. Concentrations of OH-PAHs were about 2-4 orders of magnitude lower than their parent PAHs and comparable to those sparsely reported in literature. (Author)

  2. Industrial air pollution in rural Kenya: community awareness, risk perception and associations between risk variables

    OpenAIRE

    Omanga, Eunice; Ulmer, Lisa; Berhane, Zekarias; Gatari, Michael

    2014-01-01

    Background Developing countries have limited air quality management systems due to inadequate legislation and lack of political will, among other challenges. Maintaining a balance between economic development and sustainable environment is a challenge, hence investments in pollution prevention technologies get sidelined in favor of short-term benefits from increased production and job creation. This lack of air quality management capability translates into lack of air pollution data, hence th...

  3. 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

    OpenAIRE

    Andrea Mastrangelo; Paula Tagliabue; Lorena Berro; Darío De Carolis; Anabel Sinchi; Clara Digilio; Delia Enria

    2014-01-01

    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...

  4. Arenas Pastor, Etnografía y alimentación entre los toba-ñachilamoleek y wichí-lhuku’tas del Chaco Central (Argentina), Edición del autor [], Buenos Aires, 2003, 562 p.

    OpenAIRE

    Montani, Rodrigo

    2006-01-01

    La voluminosa obra de Pastor Arenas es fruto de una investigación etnobiológica sobre la alimentación entre dos grupos indígenas del Chaco central argentino : los wichís « carmeños » y los tobas-pilagás. Ambos grupos, cada uno de los cuales fue delimitado siguiendo el pertinente criterio de filiación histórica, lingüística y socio-política, están asentados en la banda sur del río Pilcomayo, al noroeste de la provincia argentina de Formosa. El enfoque etnobiológico adoptado para la investigaci...

  5. Desobediencia civil en Argentina

    Directory of Open Access Journals (Sweden)

    Gustavo Fondevila

    2003-01-01

    Full Text Available Resumen: La crisis económica de Argentina en años recientes derivó en la pérdida de legitimidad de las instituciones políticas del país. La medida de suspensión de las libertades y garantías de derechos individuales provocó una desobediencia civil generalizada que llevó a miles de personas a manifestar pacíficamente su repudio al gobierno de Fernando de la Rúa. Este gesto ciudadano espontáneo, desorganizado y voluntario sirvió, entre otras cosas, para formar una autodeterminación primaria directa de la voluntad popular y una autocomprensión del carácter democrático de la sociedad civil. La justificación de la desobediencia se basaba en una cuestión de derechos. Todos los manifestantes afirmaban que tenían derecho a desobedecer porque la desobediencia, en ciertas circunstancias, era un derecho humano. ¿Pero puede ser la desobediencia civil, en un Estado de derecho, un auténtico derecho? ¿En qué circunstancias, en el contexto legal y fuera de los derechos habituales de resistencia como huelga, manifestación, etcétera, se puede desobedecer una norma legal? Abstract: The recent economic crisis in Argentina led to the loss of identity of the country’s political institutions. The measure of the suspension of freedom and of the guarantee of individual rights provoked a generalized civil disobedience which led thousands of people to peacefully demonstrate their repudiation of Fernando de la Rúa’s government. This spontaneous, unorganized and voluntary action by the citizens served, among other things, to form a direct primary self-determination of the will of the people and a self-understanding of the democratic character of civil society. The justification of the disobedience was based on a question of rights. All the demonstrators asserted that they had the right to disobey because disobedience, in certain circumstances, was a human right. However, can civil disobedience, in a constitutional state, be an authentic right

  6. Modification by antioxidant supplementation of changes in human lung function associated with air pollutant exposure: A systematic review

    Directory of Open Access Journals (Sweden)

    Chow Katherine S

    2011-07-01

    Full Text Available Abstract Background Outdoor air pollution, given its demonstrated negative effects on the respiratory system, is a growing public health concern worldwide, particularly in urban cities. Human exposure to pollutants such as ozone, nitrogen oxides, combustion-related particulate matter and oxides of sulfur is responsible for significant cardiopulmonary morbidity and mortality in both adults and children. Several antioxidants have shown an ability to partially attenuate the negative physiological and functional impacts of air pollutants. This study systematically presents current data on the potential benefits of antioxidant supplementation on lung function outcomes associated with air pollutant exposures in intact humans. Methods Electronic databases (MEDLINE, EMBASE, BIOSIS Previews, Web of Sciences, Environmental Sciences & Pollution Management and TOXNET were systematically searched for all studies published up to April 2009. Search terms relating to the concepts of respiratory tract diseases, respiratory function tests, air pollution, and antioxidants were used. Data was systematically abstracted from original articles that satisfied selection criteria for inclusion. For inclusion, the studies needed to have evaluated human subjects, given supplemental antioxidants, under conditions of known levels of air pollutants with measured lung function before and after antioxidant administration and/or air pollution exposure. Selected studies were summarized and conclusions presented. Results Eight studies investigated the role of antioxidant supplementation on measured lung function outcomes after subject exposure to air pollutants under controlled conditions; 5 of these studies concluded that pollutant-induced airway hyper-responsiveness and diminution in lung function measurements were attenuated by antioxidant supplementation. The remaining five studies took place under ambient (uncontrolled exposures and unanimously concluded that antioxidant

  7. GST M1 GENOTYPE INFLUENCES THE SUSCEPTIBILITY OF MEN TO SPERM DNA DAMAGE ASSOCIATED WITH EXPOSURE TO AIR POLLUTION

    Science.gov (United States)

    GSTM1 GENOTYPE INFLUENCES THE SUSCEPTIBILITY OF MEN TO SPERM DNA DAMAGE ASSOCIATED WITH EXPOSURE TO AIR POLLUTION. J. Rubes1, SG Selevan2, R. Sram3, DPEvenson4, SD Perreault5. 1VRI, Brno, CR; 2US EPA/ORD/NCEA, Washington, DC; 3IEM AS CR, Prague, CR; 4SDSU, Brookings, SD; 5US EPA...

  8. A review of hymenopterous parasitoid guilds attacking Anastrepha spp. and Ceratitis capitata (Diptera: Tephritidae) in Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Ovruski, Sergio M.; Orono, Luis E.; Nunez-Campero, Segundo; Schliserman, Pablo; Albornoz-Medina, Patricia; Bezdjian, Laura P.; Nieuwenhove, Guido A. Van; Martin, Cristina B. [Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Tucuman (Argentina). Planta Piloto de Procesos Industriales Microbiologicos y Biotecnologia. Div. Control Biologico de Plagas

    2006-07-01

    This study provides detailed information on the diversity, abundance, guilds, host plant and host fly ranges, distribution, and taxonomic status of hymenopterous parasitoid species associated with Ceratitis capitata (Wiedemann) and Anastrepha spp. (A. fraterculus (Wiedemann) and A. schultzi Blanchard) in Argentina. Moreover, the article also argues future needs regarding the use of some parasitoid species as an alternative tool in fruit fly management programs of the National Fruit Fly Control and Eradication Program (PROCEM-Argentina). Data used for this work were obtained from numerous old and recent published articles on fruit fly parasitoids in Argentina. (author)

  9. A review of hymenopterous parasitoid guilds attacking Anastrepha spp. and Ceratitis capitata (Diptera: Tephritidae) in Argentina

    International Nuclear Information System (INIS)

    This study provides detailed information on the diversity, abundance, guilds, host plant and host fly ranges, distribution, and taxonomic status of hymenopterous parasitoid species associated with Ceratitis capitata (Wiedemann) and Anastrepha spp. (A. fraterculus (Wiedemann) and A. schultzi Blanchard) in Argentina. Moreover, the article also argues future needs regarding the use of some parasitoid species as an alternative tool in fruit fly management programs of the National Fruit Fly Control and Eradication Program (PROCEM-Argentina). Data used for this work were obtained from numerous old and recent published articles on fruit fly parasitoids in Argentina. (author)

  10. Argentina and Brazil

    International Nuclear Information System (INIS)

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

  11. Annoyance Caused by Noise and Air Pollution during Pregnancy: Associated Factors and Correlation with Outdoor NO2 and Benzene Estimations

    Directory of Open Access Journals (Sweden)

    Ana Fernández-Somoano

    2015-06-01

    Full Text Available This study aimed to describe the degree of annoyance among pregnant women in a Spanish cohort and to examine associations with proximity to traffic, NO2 and benzene exposure. We included 2457 participants from the Spanish Childhood and Environment study. Individual exposures to outdoor NO2 and benzene were estimated, temporally adjusted for pregnancy. Interviews about sociodemographic variables, noise and air pollution were carried out. Levels of annoyance were assessed using a scale from 0 (none to 10 (strong and unbearable; a level of 8 to 10 was considered high. The reported prevalence of high annoyance levels from air pollution was 11.2% and 15.0% from noise; the two variables were moderately correlated (0.606. Significant correlations between NO2 and annoyance from air pollution (0.154 and that from noise (0.181 were observed. Annoyance owing to noise and air pollution had a low prevalence in our Spanish population compared with other European populations. Both factors were associated with proximity to traffic. In multivariate models, annoyance from air pollution was related to NO2, building age, and country of birth; annoyance from noise was only related to the first two. The health burden of these exposures can be increased by stress caused by the perception of pollution sources.

  12. Annoyance Caused by Noise and Air Pollution during Pregnancy: Associated Factors and Correlation with Outdoor NO2 and Benzene Estimations.

    Science.gov (United States)

    Fernández-Somoano, Ana; Llop, Sabrina; Aguilera, Inmaculada; Tamayo-Uria, Ibon; Martínez, María Dolores; Foraster, Maria; Ballester, Ferran; Tardón, Adonina

    2015-06-01

    This study aimed to describe the degree of annoyance among pregnant women in a Spanish cohort and to examine associations with proximity to traffic, NO2 and benzene exposure. We included 2457 participants from the Spanish Childhood and Environment study. Individual exposures to outdoor NO2 and benzene were estimated, temporally adjusted for pregnancy. Interviews about sociodemographic variables, noise and air pollution were carried out. Levels of annoyance were assessed using a scale from 0 (none) to 10 (strong and unbearable); a level of 8 to 10 was considered high. The reported prevalence of high annoyance levels from air pollution was 11.2% and 15.0% from noise; the two variables were moderately correlated (0.606). Significant correlations between NO2 and annoyance from air pollution (0.154) and that from noise (0.181) were observed. Annoyance owing to noise and air pollution had a low prevalence in our Spanish population compared with other European populations. Both factors were associated with proximity to traffic. In multivariate models, annoyance from air pollution was related to NO2, building age, and country of birth; annoyance from noise was only related to the first two. The health burden of these exposures can be increased by stress caused by the perception of pollution sources. PMID:26095869

  13. Indoor to outdoor air quality associations with self-pollution implications inside passenger car cabins

    Science.gov (United States)

    Abi-Esber, L.; El-Fadel, M.

    2013-12-01

    In this study, in-vehicle and out-vehicle concentrations of fine particulate matter (PM2.5) and carbon monoxide (CO) are measured to assess commuter's exposure in a commercial residential area and on a highway, under three popular ventilation modes namely, one window half opened, air conditioning on fresh air intake, and air conditioning on recirculation and examine its relationship to scarcely studied parameters including self pollution, out-vehicle sample intake location and meteorological gradients. Self pollution is the intrusion of a vehicle's own engine fumes into the passenger's compartment. For this purpose, six car makes with different ages were instrumented to concomitantly monitor in- and out-vehicle PM2.5 and CO concentrations as well as meteorological parameters. Air pollution levels were unexpectedly higher in new cars compared to old cars, with in-cabin air quality most correlated to that of out-vehicle air near the front windshield. Self-pollution was observed at variable rates in three of the six tested cars. Significant correlations were identified between indoor to outdoor pressure difference and PM2.5 and CO In/Out (IO) ratios under air recirculation and window half opened ventilation modes whereas temperature and humidity difference affected CO IO ratios only under the air recirculation ventilation mode.

  14. Tobacco industry targeting youth in Argentina

    Science.gov (United States)

    Braun, S; Mejia, R; Ling, P M; Pérez-Stable, E J

    2013-01-01

    Background/aim Argentina has one of the highest cigarette smoking rates among both men and women in the Americas and no legislated restrictions on tobacco industry advertising. The tobacco industry has traditionally expanded markets by targeting adolescents and young adults. The objective of this study was to determine whether and how the tobacco industry promotes cigarettes to adolescents in Argentina. Methods We conducted a systematic search of tobacco industry documents available through the internet dated between 1995 and 2004 using standard search terms to identify marketing strategies in Argentina. A selected review of the four leading newspapers and nine magazines with reported high readership among adolescents was completed. The selected print media were searched for tobacco images and these were classified as advertisements if associated with a commercial product or as a story if not. Results The tobacco industry used market segmentation as a strategy to target Argentinean consumers. British American Tobacco (BAT) undertook a young adult psychographic study and classified them as “progressives”, “Jurassics” or “conservatives” and “crudos” or “spoiled brats”. BAT marketed Lucky Strike to the “progressives” using Hollywood movies as a vehicle. The tobacco industry also targeted their national brands to the conservatives and linked these brands with “nationalistic values” in advertising campaigns. Philip Morris promoted Marlboro by sponsoring activities directed at young people and they launched the 10 cigarettes packet as a starter vehicle. Conclusions The tobacco industry used psychographic segmentation of the population and developed advertising strategies focused on youth. Tobacco control researchers and advocates must be able to address these strategies in counter-marketing interventions. PMID:18299308

  15. Association between exposure to ambient air pollution before conception date and likelihood of giving birth to girls in Guangzhou, China

    Science.gov (United States)

    Lin, Hualiang; Liang, Zhijiang; Liu, Tao; Di, Qian; Qian, Zhengmin; Zeng, Weilin; Xiao, Jianpeng; Li, Xing; Guo, Lingchuan; Ma, Wenjun; Zhao, Qingguo

    2015-12-01

    A few studies have linked ambient air pollution with sex ratio at birth. Most of these studies examined the long-term effects using spatial or temporal comparison approaches. This study aimed to investigate whether parental exposure to air pollution before conception date could affect the likelihood of the offspring being male or female. We used the information collected in a major maternal hospital in Guangzhou, China. The parental exposure to air pollution was assessed using the air pollution concentration before the conception date. Logistic regression models were used to assess the association between air pollution exposure and birth sex with adjustment for potential confounding factors, such as maternal age, parental education levels, long-term trend, season, and weather condition (mean temperature and relative humidity). The analysis revealed that higher air pollution was associated with higher probability of female newborns, with the effective exposure around one week prior to conception date. In the one-pollutant models, PM10, SO2 and NO2 had significant effects. For example, the excess risk was 0.61% (95% confidence interval (95% CI): 0.36%, 0.86%) for a 10 ug/m3 increase in lag 2 day's PM10, 0.42% (95% CI: 0.21%, 0.64%) for lag 3 day's SO2 and 0.97% (95% CI: 0.44%, 1.50%) for lag 3 day's NO2; and in two-pollutant models, PM10 remained statistically significant. These results suggest that parental exposure to ambient air pollution a few days prior to conception might be a contributing factor to higher probability of giving birth to female offspring in Guangzhou.

  16. Association between changes in exposure to air pollution and biomarkers of oxidative stress in children before and during the Beijing Olympics

    NARCIS (Netherlands)

    Lin, Weiwei; Zhu, Tong; Xue, Tao; Peng, Wei; Brunekreef, Bert; Gehring, Ulrike; Huang, Wei; Hu, Min; Zhang, Yuanhang; Tang, Xiaoyan

    2015-01-01

    It is not known whether exposure to air pollutants causes systemic oxidative stress in children. We investigated the association between exposure to air pollution and biomarkers of oxidative stress in relation to a governmental air quality intervention implemented during the 2008 Beijing Olympic Gam

  17. Association of ambient air quality with children`s lung function in urban and rural Iran

    Energy Technology Data Exchange (ETDEWEB)

    Asgari, M.M.; Dubois, A.; Beckett, W.S. [Yale Univ. School of Medicine, New Haven, CT (United States); Asgari, M. [Shaheed Beheshti Univ., Tehran (Iran, Islamic Republic of); Gent, J. [John B. Pierce Lab., New Haven, CT (United States)

    1998-05-01

    During the summer of 1994, a cross-sectional epidemiological study, in which the pulmonary function of children in Tehran was compared with pulmonary function in children in a rural town in Iran, was conducted. Four hundred children aged 5--11 y were studied. Daytime ambient nitrogen dioxide, sulfur dioxide, and particulate matter were measured with portable devices, which were placed in the children`s neighborhoods on the days of study. Levels of these ambient substances were markedly higher in urban Tehran than in rural areas. Children`s parents were questioned about home environmental exposures (including heating source and environmental tobacco smoke) and the children`s respiratory symptoms. Pulmonary function was assessed, both by spirometry and peak expiratory flow meter. Forced expiratory volume in 1 s and forced vital capacity--as a percentage of predicted for age, sex and height--were significantly lower in urban children than in rural children. Both measurements evidenced significant reverse correlations with levels of sulfur dioxide, nitrogen dioxide, and particulate matter. Differences in spirometric lung function were not explained by nutritional status, as assessed by height and weight for age, or by home environmental exposures. Reported airway symptoms were higher among rural children, whereas reported physician diagnosis of bronchitis and asthma were higher among urban children. The association between higher pollutant concentrations and reduced pulmonary function in this urban-rural comparison suggests that there is an effect of urban air pollution on short-term lung function and/or lung growth and development during the preadolescent years.

  18. Crisis en la Argentina: una respuesta desde la historia de las bibliotecas públicas

    OpenAIRE

    Alejandro E. Parada

    2002-01-01

    The author defines and epitomizes the concept of crisis and associates the duration with the likely outcome. States that in 2002 Argentina is in crisis and offers a look at the problem from the Library Science with the question: what tells us the history of public libraries in Argentina during their continuous and endless crisis? To outline some answers presents four Argentine library events occurred in the late colonial period (1794), in the May Revolution (1810-1812), in 1870 with the enact...

  19. TYPICAL WEATHER CHARACTERISTICS ASSOCIATED WITH AIR POLLUTION IN HONG KONG AREA

    Institute of Scientific and Technical Information of China (English)

    CHEN Xun-lai; FAN Shao-jia; LI Jiang-nan; LIU Ji; WANG An-yu; FONG Soi-kun

    2008-01-01

    With the hourly data of Air Pollution Index (API) by Hong Kong Environmental Protection Department (HKEPD) during the 6 years of 2000 - 2005 and NCEP / NCAR reanalysis data of 2.5°×2.5° wind and pressure fields, the characteristics of API in Hong Kong area and the impacts of typical weather characteristics on the air pollution in Hong Kong have been studied. The results are shown as follows. (1) The API exhibits obvious seasonal variability as the number of air pollution days increases by the year. For most of the local monitoring stations, it is the most from January to March, a little less from July to September and the least from April to June. (2) There are four typical types of weather situations that are responsible for the air pollution in Hong Kong: tropical cyclones, continental cold highs, transformed highs that have moved out to sea and low pressure troughs.

  20. The association between low level exposures to ambient air pollution and term low birth weight: a retrospective cohort study

    Directory of Open Access Journals (Sweden)

    Stieb David

    2006-02-01

    Full Text Available Abstract Background Studies in areas with relatively high levels of air pollution have found some positive associations between exposures to ambient levels of air pollution and several birth outcomes including low birth weight (LBW. The purpose of this study was to examine the association between LBW among term infants and ambient air pollution, by trimester of exposure, in a region of lower level exposures. Methods The relationship between LBW and ambient levels of particulate matter up to 10 um in diameter (PM10, sulfur dioxide (SO2 and ground-level ozone (O3 was evaluated using the Nova Scotia Atlee Perinatal Database and ambient air monitoring data from the Environment Canada National Air Pollution Surveillance Network and the Nova Scotia Department of Environment. The cohort consisted of live singleton births (≥37 weeks of gestation between January1,1988 and December31,2000. Maternal exposures to air pollution were assigned to women living within 25 km of a monitoring station at the time of birth. Air pollution was evaluated as a continuous and categorical variable (using quartile exposures for each trimester and relative risks were estimated from logistic regression, adjusted for confounding variables. Results There were 74,284 women with a term, singleton birth during the study period and with exposure data. In the analyses unadjusted for year of birth, first trimester exposures in the highest quartile for SO2 and PM10suggested an increased risk of delivering a LBW infant (relative risk = 1.36, 95% confidence interval = 1.04 to 1.78 for SO2 exposure and relative risk = 1.33, 95% confidence interval = 1.02 to 1.74 for PM10. After adjustment for birth year, the relative risks were attenuated somewhat and not statistically significant. A dose-response relationship for SO2 was noted with increasing levels of exposure. No statistically significant effects were noted for ozone. Conclusion Our results suggest that exposure during the first

  1. Family Dynamics and Personal Strengths among Dementia Caregivers in Argentina

    Science.gov (United States)

    Elnasseh, Aaliah G.; Trujillo, Michael A.; Peralta, Silvina Victoria; Stolfi, Miriam E.; Morelli, Eliana; Perrin, Paul B.

    2016-01-01

    This study examined whether healthier family dynamics were associated with higher personal strengths of resilience, sense of coherence, and optimism among dementia caregivers in Argentina. Caregivers are usually required to assist individuals with dementia, and family members have typically fulfilled that role. Personal strengths such as resilience, sense of coherence, and optimism have been shown to protect caregivers from some of the negative experiences of providing care, though the family-related variables associated with these personal strengths are largely unknown. Hierarchical multiple regressions investigated the extent to which family dynamics variables are associated with each of the caregiver personal strengths after controlling for demographic and caregiver characteristics. A sample of 105 caregivers from Argentina completed a set of questionnaires during a neurologist visit. Family dynamics explained 32% of the variance in resilience and 39% of the variance in sense of coherence. Greater family empathy and decreased family problems were uniquely associated with higher resilience. Greater communication and decreased family problems were uniquely associated with higher sense of coherence. Optimism was not found to be significantly associated with family dynamics. These results suggest that caregiver intervention research focused on the family may help improve caregiver personal strengths in Argentina and other Latin American countries. PMID:27413574

  2. Association of Traffic-Related Air Pollution with Children’s Neurobehavioral Functions in Quanzhou, China

    OpenAIRE

    Wang, Shunqin; Zhang, Jinliang; Zeng, Xiaodong; Zeng, Yimin; Wang, Shengchun; Chen, Shuyun

    2009-01-01

    Background With the increase of motor vehicles, ambient air pollution related to traffic exhaust has become an important environmental issue in China. Because of their fast growth and development, children are more susceptible to ambient air pollution exposure. Many chemicals from traffic exhaust, such as carbon monoxide, nitrogen dioxide, and lead, have been reported to show adverse effects on neurobehavioral functions. Several studies in China have suggested that traffic exhaust might affec...

  3. Search for tachyons associated with extensive air showers in the ground level cosmic radiation

    Science.gov (United States)

    Masjed, H. F.; Ashton, F.

    1985-01-01

    Events detected in a shielded plastic scintillation counter occurring in the 26 microsec preceding the arrival of an extensive air shower at ground level with local electron density or = 20 m to the -2 power and the 240 microsec after its arrival have been studied. No significant excess of events (tachyons) arriving in the early time domain have been observed in a sample of 11,585 air shower triggers.

  4. Wheat straw burning and its associated impacts on Beijing air quality

    Institute of Scientific and Technical Information of China (English)

    LI LingJun; WANG Ying; ZHANG Qiang; LI JinXiang; YANG XiaoGuang; JIN Jun

    2008-01-01

    Based on MODIS images, large-scale flow field charts and environmental monitoring data, we thoroughly analyzed the spatial distribution of wheat straw burning in North China, with focus on its environmental impacts on the air quality of Beijing and pollution transport paths. And we anatomized changes of air quality in Beijing under the impacts of pollution generated by wheat straw burning around. The results indicate that: (1) The North China Plain, a winter-wheat growing area, is the main source of pollutants induced by wheat straw burning in Beijing. The direction of south-west is the dominant heavy pollution transport path. (2) Impacts of wheat straw burning on air quality are mainly manifested by significantly increasing CO concentration. (3) Precursors of O3 generated by wheat straw burning, combining with favorable meteorological conditions, can induce increasing O3 concentration greatly. NO concentration will be greatly increased due to decreasing O3 concentration at night.(4) Atmospheric particles, especially the fine ones, from wheat straw burning exert considerable influence on Beijing air quality. (5) Different contributions of wheat straw burning to pollutants are identified.Ratios of PM10/SO2, CO/SO2, etc., can be applied to indicate pollution extent of wheat straw burning.High ratios of PM10/SO2 and CO/SO2 show that the air quality was heavily impacted by wheat straw burning and these ratios can be employed as indicators of contribution of wheat straw burning to the degradation of Beijing air quality. (6) Randomness of wheat straw burning activities renders random outbreak of air pollution of this type. Regional and extensive wheat straw burning activities can cause serious air pollution event.

  5. Association between air pollution and general practitioner visits for respiratory diseases in Hong Kong

    OpenAIRE

    Wong, T W; Tam, W.; Yu, I Tak Sun; Wun, Y T; Wong, A H S; Wong, C. M.

    2006-01-01

    Background: Few studies have explored the relation between air pollution and general practitioner (GP) consultations in Asia. Clinic attendance data from a network of GPs were studied, and the relationship between daily GP consultations for upper respiratory tract infections (URTI) and non-URTI respiratory diseases and daily air pollutant concentrations measured in their respective districts was examined. Methods: A time series study was performed in 2000-2002 using data on daily patient cons...

  6. Association of Air Pollution with Increased Incidence of Ventricular Tachyarrhythmias Recorded by Implanted Cardioverter Defibrillators

    OpenAIRE

    Dockery, Douglas W.; Luttmann-Gibson, Heike; Rich, David Q.; Link, Mark S.; Mittleman, Murray A.; Gold, Diane R.; Koutrakis, Petros; Schwartz, Joel D.; Verrier, Richard L.

    2005-01-01

    Epidemiologic studies have demonstrated a consistent link between sudden cardiac deaths and particulate air pollution. We used implanted cardioverter defibrillator (ICD) records of ventricular tachyarrhythmias to assess the role of air pollution as a trigger of these potentially life-threatening events. The study cohort consisted of 203 cardiac patients with ICD devices in the Boston metropolitan area who were followed for an average of 3.1 years between 1995 and 2002. Fine particle mass and ...

  7. Wheat straw burning and its associated impacts on Beijing air quality

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Based on MODIS images, large-scale flow field charts and environmental monitoring data, we thor- oughly analyzed the spatial distribution of wheat straw burning in North China, with focus on its envi- ronmental impacts on the air quality of Beijing and pollution transport paths. And we anatomized changes of air quality in Beijing under the impacts of pollution generated by wheat straw burning around. The results indicate that: (1) The North China Plain, a winter-wheat growing area, is the main source of pollutants induced by wheat straw burning in Beijing. The direction of south-west is the dominant heavy pollution transport path. (2) Impacts of wheat straw burning on air quality are mainly manifested by significantly increasing CO concentration. (3) Precursors of O3 generated by wheat straw burning, combining with favorable meteorological conditions, can induce increasing O3 concentration greatly. NO concentration will be greatly increased due to decreasing O3 concentration at night. (4) Atmospheric particles, especially the fine ones, from wheat straw burning exert considerable influ- ence on Beijing air quality. (5) Different contributions of wheat straw burning to pollutants are identified. Ratios of PM10/SO2, CO/SO2, etc., can be applied to indicate pollution extent of wheat straw burning. High ratios of PM10/SO2 and CO/SO2 show that the air quality was heavily impacted by wheat straw burning and these ratios can be employed as indicators of contribution of wheat straw burning to the degradation of Beijing air quality. (6) Randomness of wheat straw burning activities renders random outbreak of air pollution of this type. Regional and extensive wheat straw burning activities can cause serious air pollution event.

  8. Association between Ambient Air Pollution and Asthma Prevalence in Different Population Groups Residing in Eastern Texas, USA

    Directory of Open Access Journals (Sweden)

    Amit Kr. Gorai

    2016-03-01

    Full Text Available Air pollution has been an on-going research focus due to its detrimental impact on human health. However, its specific effects on asthma prevalence in different age groups, genders and races are not well understood. Thus, the present study was designed to examine the association between selected air pollutants and asthma prevalence in different population groups during 2010 in the eastern part of Texas, USA.The pollutants considered were particulate matter (PM2.5 with an aerodynamic diameter less than 2.5 micrometers and surface ozone. The population groups were categorized based on age, gender, and race. County-wise asthma hospital discharge data for different age, gender, and racial groups were obtained from Texas Asthma Control Program, Office of Surveillance, Evaluation and Research, Texas Department of State Health Services. The annual means of the air pollutants were obtained from the United States Environmental Protection Agency (U.S. EPA’s air quality system data mart program. Pearson correlation analyzes were conducted to examine the relationship between the annual mean concentrations of pollutants and asthma discharge rates (ADR for different age groups, genders, and races. The results reveal that there is no significant association or relationship between ADR and exposure of air pollutants (PM2.5, and O3. The study results showed a positive correlation between PM2.5 and ADR and a negative correlation between ADR and ozone in most of the cases. These correlations were not statistically significant, and can be better explained by considering the local weather conditions. The research findings facilitate identification of hotspots for controlling the most affected populations from further environmental exposure to air pollution, and for preventing or reducing the health impacts.

  9. Association between Ambient Air Pollution and Asthma Prevalence in Different Population Groups Residing in Eastern Texas, USA.

    Science.gov (United States)

    Gorai, Amit Kr; Tchounwou, Paul B; Tuluri, Francis

    2016-01-01

    Air pollution has been an on-going research focus due to its detrimental impact on human health. However, its specific effects on asthma prevalence in different age groups, genders and races are not well understood. Thus, the present study was designed to examine the association between selected air pollutants and asthma prevalence in different population groups during 2010 in the eastern part of Texas, USA.The pollutants considered were particulate matter (PM2.5 with an aerodynamic diameter less than 2.5 micrometers) and surface ozone. The population groups were categorized based on age, gender, and race. County-wise asthma hospital discharge data for different age, gender, and racial groups were obtained from Texas Asthma Control Program, Office of Surveillance, Evaluation and Research, Texas Department of State Health Services. The annual means of the air pollutants were obtained from the United States Environmental Protection Agency (U.S. EPA)'s air quality system data mart program. Pearson correlation analyzes were conducted to examine the relationship between the annual mean concentrations of pollutants and asthma discharge rates (ADR) for different age groups, genders, and races. The results reveal that there is no significant association or relationship between ADR and exposure of air pollutants (PM2.5, and O₃). The study results showed a positive correlation between PM2.5 and ADR and a negative correlation between ADR and ozone in most of the cases. These correlations were not statistically significant, and can be better explained by considering the local weather conditions. The research findings facilitate identification of hotspots for controlling the most affected populations from further environmental exposure to air pollution, and for preventing or reducing the health impacts. PMID:27043587

  10. Association between Ambient Air Pollution and Asthma Prevalence in Different Population Groups Residing in Eastern Texas, USA

    Science.gov (United States)

    Gorai, Amit Kr.; Tchounwou, Paul B.; Tuluri, Francis

    2016-01-01

    Air pollution has been an on-going research focus due to its detrimental impact on human health. However, its specific effects on asthma prevalence in different age groups, genders and races are not well understood. Thus, the present study was designed to examine the association between selected air pollutants and asthma prevalence in different population groups during 2010 in the eastern part of Texas, USA.The pollutants considered were particulate matter (PM2.5 with an aerodynamic diameter less than 2.5 micrometers) and surface ozone. The population groups were categorized based on age, gender, and race. County-wise asthma hospital discharge data for different age, gender, and racial groups were obtained from Texas Asthma Control Program, Office of Surveillance, Evaluation and Research, Texas Department of State Health Services. The annual means of the air pollutants were obtained from the United States Environmental Protection Agency (U.S. EPA)’s air quality system data mart program. Pearson correlation analyzes were conducted to examine the relationship between the annual mean concentrations of pollutants and asthma discharge rates (ADR) for different age groups, genders, and races. The results reveal that there is no significant association or relationship between ADR and exposure of air pollutants (PM2.5, and O3). The study results showed a positive correlation between PM2.5 and ADR and a negative correlation between ADR and ozone in most of the cases. These correlations were not statistically significant, and can be better explained by considering the local weather conditions. The research findings facilitate identification of hotspots for controlling the most affected populations from further environmental exposure to air pollution, and for preventing or reducing the health impacts. PMID:27043587

  11. Aphididae (Hemiptera) on ornamental plants in Córdoba (Argentina) Aphididae (Hemiptera) en plantas ornamentales de Córdoba (Argentina)

    OpenAIRE

    Alfonsina Szpeiner

    2008-01-01

    In 30 surveys across Cordoba city and surroundings (Argentina) I recorded, from November 2001 to May 2002, a total of 109 ornamental plants infested with aphid colonies. Surveys were conducted in the local botanical garden as well as homestead gardens and nurseries. Seventeen species of aphids were identified, 4 of which are new species in the area, from 47 ornamental plants. In a total of 59 plant/aphid associations, 38 new associations were found. I present the first record of aphids coloni...

  12. Brucellosis in buffalos from Corrientes northeast (Argentina

    Directory of Open Access Journals (Sweden)

    G. Crudeli

    2010-02-01

    Full Text Available Buffalo’s production represents an important option as input source in livestock systems located in areas with little profitability by cattle. In mostly farms, cattle and buffalos are breeding together, due that in Argentina, to carry out buffalo’s production is in an extensive way, with the aim to produce meat – mostly- milk – for this production nutritional supplements are used- and leathers. Brucellosis is zoonic illnesses from bacteria belong to Brucella which caused human human health problems by contaminated food ingestion or to those who are in touch with cattle. In Argentina, exist the National Control an Elimination Program for cattle Brucellosis, which include buffalos also, there is inclosed female vaccination and serologic segregation of positive reactants. Diagnosis techniques ruled for cattle brucellosis are BPA (Buffered Plate Agglutination, Tube seroaglutination and 2MercaptoEthanol. International reference test is Complement Fixation. By means of this present work, we pretend to evaluate the serologic diagnosis utility, ruled to the buffalos and compare obtained results by BPA, SAT and 2ME with Complement Fixation Test. In the present communication are presented results from the use of diagnosis techniques recommended by SENASA (National Service of Sanity and Quality Agro-Food to buffalo’s serums which belong to nine farms from NE Corrientes State. Obtained results show that association o BPA as Screening Test and SAT and 2ME as Confirmated Test has a valid correlation for the detection of positive animals with the reference technique Complement Fixation.

  13. 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.

  14. Primer registro de artropodofauna cadavérica en sustratos humanos y animales en San Juan, Argentina First record of cadaverous arthropod fauna in human and animal substrates in San Juan, Argentina

    Directory of Open Access Journals (Sweden)

    Fernando H. Aballay

    2008-12-01

    Full Text Available En el presente trabajo se estudiaron los artrópodos carroñeros que acudieron a cadáveres de vertebrados al aire libre en la provincia de San Juan, Argentina. El objetivo fue inventariar la composición específica de la artropodofauna cadavérica, asociada a diferentes sustratos de vertebrados en descomposición. Se colectaron muestras de artrópodos sobre restos animales y humanos en condiciones de campo y sobre cadáveres de cerdos domésticos colocados al aire libre bajo condiciones controladas. Se registraron, por primera vez para la provincia de San Juan, 40 especies de artropodofauna tanatológica incluidas en cuatro órdenes y 15 familias. Se incorpora, como primera cita para la fauna forense argentina, un necrófago: Megelenophorus americanus Lacordaire (Coleoptera: Tenebrionidae, y tres necrófilas: Polybia ruficeps Schrottky (Hymenoptera: Vespidae, Pheidole bergi Mayr (Hymenoptera, Formicidae, Myrmicinae y Ectatomma brunneum Smith (Hymenoptera, Formicidae, Ponerinae. Se citan 18 especies necrófagas, 18 necrófilas, una omnívora y seis oportunistas sobre siete diferentes sustratos cadavéricos de vertebrados. Se brindan nuevos registros de distribución de 18 especies de insectos. Se confirma la estacionalidad invernal de Callíphora vicina Robineau-Desvoidy (Diptera: Calliphoridae.In order to determine the specific composition of cadaverous arthropod fauna associated to different decomposing vertebrate substrates, we studied the carrion arthropods that feed on outdoor carcasses in San Juan province, Argentina. Arthropods were collected on animal and human remains in the field and on carcasses of domestic pig placed outdoors under controlled conditions. Forty species of carrion arthropods belonging to four orders and 15 families were recorded for the first time in this province. We present the first record of forensic fauna in Argentina of the necrophagous species Megelenophorus americanus (Coleoptera: Tenebrionidae and three

  15. Evapofacies del Salar Hombre Muerto, Puna argentina: distribucion y genesis Evapofacies associated with the Salar Hombre Muerto, Puna: Distribution and genesis

    Directory of Open Access Journals (Sweden)

    D. Vinante

    2006-06-01

    Full Text Available En el presente trabajo se identifican, describen y se muestra la distribución areal de las facies y evapofacies asociadas al ambiente evaporítico del Salar Hombre Muerto, ubicado en el borde oriental de la Puna Austral, en una zona con una amplia difusión de yacimientos de boratos. El salar puede ser dividido en dos subcuencas, la occidental y la oriental, ambas separadas por el islote central de Farallón Catal. La subcuenca oriental es boratífera, con bajo contenido en cloruros, mientras que la subcuenca occidental presenta tanto en superficie como en profundidad potentes acumulaciones de halita (hasta 900 m y es prácticamente estéril en boratos. Se plantean varias hipótesis sobre la génesis de la evapofacies boratífera, representada mineralógicamente por el borato ulexita. Esta es la evapofacies de interés económico y que se explota en el salar, donde además se extraen salmueras de litio.This paper identifies, describes and shows the areal distribution of facies and evapofacies associated with Salar Hombre Muerto, located in the eastern border of the Southern Puna, in an area with a wide diffusion of borates. The salar can be divided in two sub-basins, the western and the eastern, both separate for the central island of Farallón Catal. The eastern sub-basin is boratiferous, with low chlorides contained, while the western one shows a thick halite accumulation (up to 900 m in surface and in depth and it is practically sterile in borates. Several hypothesis on the genesis of the boratiferous evapofacies, minerallogically represented by the borate ulexite, are proposed. This evapofacies is the economic interest mined area, where lithium brines are also extracted.

  16. Short-term associations between outdoor air pollution and visits to accident and emergency departments in London for respiratory complaints.

    Science.gov (United States)

    Atkinson, R W; Anderson, H R; Strachan, D P; Bland, J M; Bremner, S A; Ponce de Leon, A

    1999-02-01

    Many epidemiological studies have shown positive short-term associations between health and current levels of outdoor air pollution. The aim of this study was to investigate the association between air pollution and the number of visits to accident and emergency (A&E) departments in London for respiratory complaints. A&E visits include the less severe cases of acute respiratory disease and are unrestricted by bed availability. Daily counts of visits to 12 London A&E departments for asthma, other respiratory complaints, and both combined for a number of age groups were constructed from manual registers of visits for the period 1992-1994. A Poisson regression allowing for seasonal patterns, meteorological conditions and influenza epidemics was used to assess the associations between the number of visits and six pollutants: nitrogen dioxide, ozone, sulphur dioxide, carbon monoxide, and particles measured as black smoke (BS) and particles with a median aerodynamic diameter of <10 microm (PM10). After making an allowance for the multiplicity of tests, there remained strong associations between visits for all respiratory complaints and increases in SO2: a 2.8% (95% confidence interval (CI) 0.7-4.9) increase in the number of visits for a 18 microg x (-3) increase (10th-90th percentile range) and a 3.0% (95% CI 0.8-5.2) increase for a 31 microg x m(-3) increase in PM10. There were also significant associations between visits for asthma and SO2, NO2 and PM10. No significant associations between O3 and any of the respiratory complaints investigated were found. Because of the strong correlation between pollutants, it was difficult to identify a single pollutant responsible for the associations found in the analyses. This study suggests that the levels of air pollution currently experienced in London are linked to short-term increases in the number of people visiting accident and emergency departments with respiratory complaints. PMID:10065665

  17. 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.

  18. The Association of Ambient Air Pollution and Traffic Exposures With Selected Congenital Anomalies in the San Joaquin Valley of California

    OpenAIRE

    Padula, Amy M.; Tager, Ira B.; Carmichael, Suzan L.; Hammond, S. Katharine; Lurmann, Frederick; Shaw, Gary M.

    2013-01-01

    Congenital anomalies are a leading cause of infant mortality and are important contributors to subsequent morbidity. Studies suggest associations between environmental contaminants and some anomalies, although evidence is limited. We aimed to investigate whether ambient air pollutant and traffic exposures in early gestation contribute to the risk of selected congenital anomalies in the San Joaquin Valley of California, 1997–2006. Seven exposures and 5 outcomes were included for a total of 35 ...

  19. Annoyance Caused by Noise and Air Pollution during Pregnancy: Associated Factors and Correlation with Outdoor NO2 and Benzene Estimations.

    OpenAIRE

    Ana Fernández-Somoano; Sabrina Llop; Inmaculada Aguilera; Ibon Tamayo-Uria; María Dolores Martínez; Maria Foraster; Ferran Ballester; Adonina Tardón

    2015-01-01

    This study aimed to describe the degree of annoyance among pregnant women in a Spanish cohort and to examine associations with proximity to traffic, NO2 and benzene exposure. We included 2457 participants from the Spanish Childhood and Environment study. Individual exposures to outdoor NO2 and benzene were estimated, temporally adjusted for pregnancy. Interviews about sociodemographic variables, noise and air pollution were carried out. Levels of annoyance were assessed using a scale from 0 (...

  20. Individualized lung recruitment during high-frequency ventilation in preterm infants is not associated with lung hyperinflation and air leaks

    OpenAIRE

    De Jaegere, Anne P; Deurloo, Eline E.; van Rijn, Rick R.; Offringa, Martin; van Kaam, Anton H.

    2016-01-01

    Lung recruitment during high-frequency ventilation (HFV) in preterm infants with respiratory distress syndrome (RDS) has been associated with an increased risk of lung hyperinflation and air leaks. Individualizing the lung recruitment procedure to the severity of lung disease of each patient might reduce these risks. In this prospective cohort study, we evaluated chest X-ray (CXR) characteristics during individualized oxygenation-guided lung recruitment with HFV in preterm infants with RDS, b...