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Sample records for argentine cnea

  1. Coordination of the U.S. DOE-Argentine National Atomic Energy Commission (CNEA) science and technology implementing arrangement. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Ebadian, M.A.

    1998-01-01

    In 1989, the US Department of Energy (DOE) established the Office of Environmental Management (EM) and delegated to the office the responsibility of cleaning up the US nuclear weapons complex. EM`s mission has three primary activities: (1) to assess, remediate, and monitor contaminated sites and facilities; (2) to store, treat, and dispose of wastes from past and current operations; and (3) to develop and implement innovative technologies for environmental remediation. 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 industry 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. Florida International University`s Hemispheric Center for Environmental Technology (FIU-HCET) serves as DOE-OST`s primary technology transfer agent. FIU-HCET acts as the coordinating and managing body for the Department of Energy (DOE)-Argentina National Atomic Energy Commission (CNEA) Arrangement. Activities include implementing standard operating procedures, tracking various technical projects, hosting visiting scientists, advising DOE of potential joint projects based on previous studies, and demonstrating/transferring desired technology. HCET hosts and directs the annual Joint Coordinating Committee for Radioactive and Mixed Waste Management meeting between the DOE and CNEA representatives. Additionally, HCET is evaluating the possibility of establishing similar arrangements with other Latin American countries.

  2. Argentine tango in Parkinson disease.

    Science.gov (United States)

    2016-10-28

    This article reports on a meta-analysis of 13 studies of the effects of Argentine tango (AT) as a music-based movement therapy for people with Parkinson's disease (PD). Nine studies involved randomised controlled trials.

  3. Carlos Mayo and Argentine historiography

    Directory of Open Access Journals (Sweden)

    Sara E. Mata

    2012-11-01

    Full Text Available The work of Carlos Mayo is distinguished by its originality and academic excellence. Our goal has been to briefly address their valuable contributions to the Argentine historiography, particularly that relating to the agricultural history of the Río de la Plata

  4. Contemporary Argentine Cinema during Neoliberalism

    Science.gov (United States)

    Rocha, Carolina

    2009-01-01

    In this article I analyze contemporary Argentine cinematic production assessing the impact of Law 24,377 that was implemented in 1995 and that provided much-needed funds for national productions. By looking at film production and consumption, the emergence of young filmmakers and the performance of both commercial films and those belonging to the…

  5. Predicting Argentine Jet Fuel Prices

    Science.gov (United States)

    2007-03-01

    economics, engineering, and the social and biological sciences (Kutner, 2005:2), but successful application of this method requires not only a deep...situations that affected the country. This crisis had politic, economic and social implications. Five presidents governed in a two month period. The...Scheimberg Sebastian. “Comentario al trabajo de German Coloma: Analisys of the behavior of the Argentine fuel market”. Political Economy Asociation

  6. The worldwide expansion of the Argentine ant

    DEFF Research Database (Denmark)

    Vogel, Valerie; Pedersen, Jes Søe; Giraud, Tatiana;

    2010-01-01

    ) and secondary introductions (from sites with established invasive supercolonies) were important in the global expansion of the Argentine ant. In combination with the similar social organization of colonies in the native and introduced range, this indicates that invasiveness did not evolve recently as a unique...

  7. 75 FR 53731 - Culturally Significant Objects Imported for Exhibition Determinations: “Contemporary Argentine...

    Science.gov (United States)

    2010-09-01

    ... for Exhibition Determinations: ``Contemporary Argentine Masterworks'' SUMMARY: Notice is hereby given... hereby determine that the objects to be included in the exhibition ``Contemporary Argentine...

  8. Argentine hemorrhagic fever: a primate model.

    Science.gov (United States)

    Weissenbacher, M C; Calello, M A; Colillas, O J; Rondinone, S N; Frigerio, M J

    1979-01-01

    Experimental Junin virus infection of a New World primate, Callithrix jacchus, was evaluated. The virus produced anorexia, loss of weight, thrombocytopenia, leukopenia, and hemorrhagic and neurological symptoms and terminated in death. Virus was recovered from urine, blood samples and all tissues taken at autopsy. These preliminary observations show that several aspects of the experimental disease in C. jacchus are quite similar to severe natural Argentine hemorrhagic fever of man.

  9. Exploration of Possible Astroblemes in the Argentine Puna

    Science.gov (United States)

    Acevedo, R. D.; Alonso, R.; Rocca, M.; Klajnik, K.; Tálamo, E.

    2014-09-01

    Potential three new astrobleme sites have been detected by remote sensors and checked in situ in Argentine Puna: an elevated plateau that it has remained stable and invariable across long geological periods.

  10. Framing crime: moral panic in Argentine newspapers

    Directory of Open Access Journals (Sweden)

    Natalia ARUGUETE

    2013-01-01

    Full Text Available Carolina Píparo was shot a few minutes after withdrawing cash from a bank branch. This case outraged the public opinion because she was eight months pregnant at the moment of the assault. She had to undergo a caesarean section and her baby only survived one week. Through an exploratory and inductive research we will analyze how the Argentine newspapers presented the case. We aim at elaborating a content analysis code book that can be validated in future similar researches on the subject. We apply the Framing theory in order to detect the frames used in the news coverage and to observe if they are compatible with the idea of «moral panic» proposed by Stanley Cohen.

  11. Pheromone disruption of Argentine ant trail integrity

    Science.gov (United States)

    Suckling, D.M.; Peck, R.W.; Manning, L.M.; Stringer, L.D.; Cappadonna, J.; El-Sayed, A. M.

    2008-01-01

    Disruption of Argentine ant trail following and reduced ability to forage (measured by bait location success) was achieved after presentation of an oversupply of trail pheromone, (Z)-9-hexadecenal. Experiments tested single pheromone point sources and dispersion of a formulation in small field plots. Ant walking behavior was recorded and digitized by using video tracking, before and after presentation of trail pheromone. Ants showed changes in three parameters within seconds of treatment: (1) Ants on trails normally showed a unimodal frequency distribution of walking track angles, but this pattern disappeared after presentation of the trail pheromone; (2) ants showed initial high trail integrity on a range of untreated substrates from painted walls to wooden or concrete floors, but this was significantly reduced following presentation of a point source of pheromone; (3) the number of ants in the pheromone-treated area increased over time, as recruitment apparently exceeded departures. To test trail disruption in small outdoor plots, the trail pheromone was formulated with carnuba wax-coated quartz laboratory sand (1 g quartz sand/0.2 g wax/1 mg pheromone). The pheromone formulation, with a half-life of 30 h, was applied by rotary spreader at four rates (0, 2.5, 7.5, and 25 mg pheromone/m2) to 1- and 4-m2 plots in Volcanoes National Park, Hawaii. Ant counts at bait cards in treated plots were significantly reduced compared to controls on the day of treatment, and there was a significant reduction in ant foraging for 2 days. These results show that trail pheromone disruption of Argentine ants is possible, but a much more durable formulation is needed before nest-level impacts can be expected. ?? 2008 Springer Science+Business Media, LLC.

  12. The Mindful Attention Awareness Scale (MAAS) in an Argentine Population

    Science.gov (United States)

    Montes, Silvana Andrea; Ledesma, Rubén Daniel; García, Natalia Mariana; Poó, Fernando Martín

    2014-01-01

    The purpose of this study was to provide evidence of validity for the Mindful Attention Awareness Scale scores in an Argentine sample (Spanish-language version). Results indicated satisfactory psychometric properties (a one-factor structure, good item discrimination, high reliability, and significant correlations with additional measures). This…

  13. Fast and flexible: argentine ants recruit from nearby trails.

    Science.gov (United States)

    Flanagan, Tatiana P; Pinter-Wollman, Noa M; Moses, Melanie E; Gordon, Deborah M

    2013-01-01

    Argentine ants (Linepithema humile) live in groups of nests connected by trails to each other and to stable food sources. In a field study, we investigated whether some ants recruit directly from established, persistent trails to food sources, thus accelerating food collection. Our results indicate that Argentine ants recruit nestmates to food directly from persistent trails, and that the exponential increase in the arrival rate of ants at baits is faster than would be possible if recruited ants traveled from distant nests. Once ants find a new food source, they walk back and forth between the bait and sometimes share food by trophallaxis with nestmates on the trail. Recruiting ants from nearby persistent trails creates a dynamic circuit, like those found in other distributed systems, which facilitates a quick response to changes in available resources.

  14. Fast and flexible: argentine ants recruit from nearby trails.

    Directory of Open Access Journals (Sweden)

    Tatiana P Flanagan

    Full Text Available Argentine ants (Linepithema humile live in groups of nests connected by trails to each other and to stable food sources. In a field study, we investigated whether some ants recruit directly from established, persistent trails to food sources, thus accelerating food collection. Our results indicate that Argentine ants recruit nestmates to food directly from persistent trails, and that the exponential increase in the arrival rate of ants at baits is faster than would be possible if recruited ants traveled from distant nests. Once ants find a new food source, they walk back and forth between the bait and sometimes share food by trophallaxis with nestmates on the trail. Recruiting ants from nearby persistent trails creates a dynamic circuit, like those found in other distributed systems, which facilitates a quick response to changes in available resources.

  15. Malvinas: the Argentine Perspective of the Falkland’s Conflict

    Science.gov (United States)

    2010-05-01

    commando operations was the book written by Isidoro Ruiz Moreno: Comandos en Accion . Munoz, Chacho, and Garasino‘s Malvinas; Album de Campana; Nora...defense of the Malvinas.32 The plan recognized that Argentina would face some difficulties defending the islands without the development of...significant military infrastructure and capabilities in the theatre. The defense plan was received on the 23rd of April 1982 by the Argentine Governor of

  16. The Use of Gamma Radiation for the Treatment of Cultural Heritage in the Argentine National Atomic Energy Commission: Past, Present, and Future.

    Science.gov (United States)

    Calvo, Ana Maria Del Carmen; Docters, Andrea; Miranda, María Virginia; Saparrat, Mario Carlos Nazareno

    2017-02-01

    The use of gamma radiation for treating biodeteriorated cultural heritage on paper has been studied at the Comisión Nacional de Energía Atómica-CNEA (Argentina) since 2001. In order to preserve books, publications, and documents that have been attacked by insects or fungi, gamma radiation techniques have been used at CNEA. The activities include basic research as well as their applications in infected documents and papers currently used in libraries and archives. New papers were subjected to accelerated ageing in order to evaluate the effects of gamma radiation on their physical and mechanical properties. Current studies include resistance to radiation in two batches of highly cellulolytic fungi, associated with indoor environment. They are present in papers and adhesives used for conservation purposes at the Laboratory of Preventive Conservation and Restoration of Documents. A joint study has been started in CNEA with the National University of La Plata.

  17. Trail Pheromone Disruption of Argentine Ant Trail Formation and Foraging

    Science.gov (United States)

    Suckling, D.M.; Peck, R.W.; Stringer, L.D.; Snook, K.; Banko, P.C.

    2010-01-01

    Trail pheromone disruption of invasive ants is a novel tactic that builds on the development of pheromone-based pest management in other insects. Argentine ant trail pheromone, (Z)-9-hexadecenal, was formulated as a micro-encapsulated sprayable particle and applied against Argentine ant populations in 400 m2 field plots in Hawai'i Volcanoes National Park. A widely dispersed point source strategy for trail pheromone disruption was used. Traffic rates of ants in bioassays of treated filter paper, protected from rainfall and sunlight, indicated the presence of behaviorally significant quantities of pheromone being released from the formulation for up to 59 days. The proportion of plots, under trade wind conditions (2-3 m s-1), with visible trails was reduced for up to 14 days following treatment, and the number of foraging ants at randomly placed tuna-bait cards was similarly reduced. The success of these trail pheromone disruption trials in a natural ecosystem highlights the potential of this method for control of invasive ant species in this and other environments. ?? Springer Science+Business Media, LLC 2010.

  18. The First Molecular Characterization of Picocyanobacteria from the Argentine Sea

    Directory of Open Access Journals (Sweden)

    Macarena Perez-Cenci

    2014-01-01

    Full Text Available Picocyanobacteria are abundant throughout the world’s oceans. Particularly, it has been reported that Synechococcus strains have a wide latitudinal distribution, from polar to tropical waters. However, their molecular characterization in the Southwest Atlantic Ocean is still missing. We analyzed Synechococcus genetic diversity in a sector of the Argentine Sea, one of the richest biological areas of the world oceans. 16S rRNA amplicons obtained after PCR amplification of environmental DNA extracted from water samples of this area were used for DGGE and sequenced. Only Synechococcus sequences could be retrieved. On the other hand, we isolated two Synechococcus strains from the environment. Our analyses revealed that the clade I group was widespread from latitude 38°S to 48°S and that can coexist with clade IV strains in shelf waters. The cooccurrence of these two clades may be related to an adaptation to high-nutrient/low-temperature waters. Our data are the first report on Synechococcus ecotypes that would be important contributors to phytoplankton biomass in the Argentine Sea, one of the richest biological areas of the world oceans.

  19. New mutualism for old: indirect disruption and direct facilitation of seed dispersal following Argentine ant invasion.

    Science.gov (United States)

    Rowles, Alexei D; O'Dowd, Dennis J

    2009-01-01

    The indirect effects of biological invasions on native communities are poorly understood. Disruption of native ant communities following invasion by the Argentine ant (Linepithema humile) is widely reported to lead indirectly to the near complete collapse of seed dispersal services. In coastal scrub in southeastern Australia, we examined seed dispersal and handling of two native and two invasive alien plant species at Argentine ant-invaded or -uninvaded sites. The Argentine ant virtually eliminates the native keystone disperser Rhytidoponera victoriae, but seed dispersal did not collapse following invasion. Indeed, Argentine ants directly accounted for 92% of all ant-seed interactions and sustained overall seed dispersal rates. Nevertheless, dispersal quantity and quality among seed species differed between Argentine ant-invaded and -uninvaded sites. Argentine ants removed significantly fewer native Acacia retinodes seeds, but significantly more small seeds of invasive Polygala myrtifolia than did native ants at uninvaded sites. They also handled significantly more large seeds of A. sophorae, but rarely moved them >5 cm, instead recruiting en masse, consuming elaiosomes piecemeal and burying seeds in situ. In contrast, Argentine ants transported and interred P. myrtifolia seeds in their shallow nests. Experiments with artificial diaspores that varied in diaspore and elaiosome masses, but kept seed morphology and elaiosome quality constant, showed that removal by L. humile depended on the interaction of seed size and percentage elaiosome reward. Small diaspores were frequently taken, independent of high or low elaiosome reward, but large artificial diaspores with high reward instead elicited mass recruitment by Argentine ants and were rarely moved. Thus, Argentine ants appear to favour some diaspore types and reject others based largely on diaspore size and percentage reward. Such variability in response indirectly reduces native seed dispersal and can directly

  20. Antibiotic sensitivity of an Argentine strain collection of Moraxella bovis.

    Science.gov (United States)

    Zielinski, G; Piscitelli, H; Perez-Monti, H; Stobbs, L A

    2000-01-01

    The antimicrobial susceptibility of 88 isolates of Moraxella bovis of Argentine origin was evaluated for 12 antimicrobials by broth microdilution procedures. The isolates had a minimum inhibitory concentration (MIC90) of or = 32 microg/mL to lincomycin. Modal MIC values for these antimicrobials were as follows: enrofloxacin, 0.03 microg/mL; ceftiofur, 0.06 pg/mL; ampicillin, 0.25 microg/mL; florfenicol, gentamicin, erythromycin, and oxytetracycline, 0.5 microg/mL; tilmicosin, 1.0 microg/mL; tylosin and spectinomycin, 4.0 microg/mL; lincomycin and erythromycin, 16 microg/mL; and trimethoprim/ sulfamethoxazole, < or = 0.25/4.75 microg/mL. These data show that all antimicrobials except lincomycin have MICs suggestive of sensitivity in vitro, though confirmation of clinical efficacy can only be properly assessed based on pharmacologic and/or clinical data to support the MIC values.

  1. Assessment of the Applicability of Total Quality Leadership into the Argentine Army.

    Science.gov (United States)

    1995-03-01

    LEADERSHIP INTO THE ARGENTINE ARMY by Gustavo A. Landa Major, Argentine Army Engineer, Escuela Superior Tecnica , 1990 Submitted in partial fulfillment...needed to check the population reality. Different mental model [Ref 16:p. 174] may be present in the minds of the Generals. Operational definitions (see... mental model at every level. * Current promotion system does not encourage self-education. * Some possible degree of lack of confidence from senior

  2. Networks in Argentine agriculture: a multiple-case study approach

    Directory of Open Access Journals (Sweden)

    Sebastián Senesi

    2013-06-01

    Full Text Available Argentina is among the four largest producers of soybeans, sunflower, corn, and wheat, among other agricultural products. Institutional and policy changes during the 1990s fostered the development of Argentine agriculture and the introduction of innovative process and product technologies (no-till, agrochemicals, GMO, GPS and new investments in modern, large-scale sunflower and soybean processing plants. In addition to technological changes, a "quiet revolution" occurred in the way agricultural production was carried out and organized: from self-production or ownership agriculture to a contract-based agriculture. The objective of this paper is to explore and describe the emergence of networks in the Argentine crop production sector. The paper presents and describes four cases that currently represent about 50% of total grain and oilseed production in Argentina: "informal hybrid form", "agricultural trust fund", "investor-oriented corporate structure", and "network of networks". In all cases, hybrid forms involve a group of actors linked by common objectives, mainly to gain scale, share resources, and improve the profitability of the business. Informal contracts seem to be the most common way of organizing the agriculture process, but using short-term contracts and sequential interfirm collaboration. Networks of networks involve long-term relationships and social development, and reciprocal interfirm collaboration. Agricultural trust fund and investor-oriented corporate structures have combined interfirm collaboration and medium-term relationships. These organizational forms are highly flexible and show a great capacity to adapt to challenges; they are competitive because they enjoy aligned incentives, flexibility, and adaptability.

  3. Methodology for solving the problem of contamination in pencils of Co-60 from the CNEA (Argentine) for the recharge of the gamma irradiator of the ININ; Metodologia para resolver el problema de contaminacion en lapices de Co-60 procedentes del CONEA (Argentina) para la recarga del irradiador gamma del ININ

    Energy Technology Data Exchange (ETDEWEB)

    Villarreal B, J.E.; Escobar A, L.; Angeles C, A.; Cruz G, H.S

    1992-07-15

    Presently report the methodology used to identify the source of contamination detected in a shipment with 5.0 X 10 Bq of Co-60 coming from Argentina is described, as well as the solution outlined to solve the problem. Its are presented by way of conclusion the experiences but outstanding learned in the process. (Author)

  4. Insecticide transfer efficiency and lethal load in Argentine ants

    Energy Technology Data Exchange (ETDEWEB)

    Hooper-Bui, L.M. [Department of Environmental Science, Louisiana State University, Baton Rouge, LA 70803 (United States); Department of Entomology, University of California, Riverside, CA 92521 (United States); Kwok, E.S.C. [Department of Cell Biology and Neuroscience, University of California, Riverside, CA 92521 (United States); Buchholz, B.A., E-mail: buchholz2@llnl.gov [Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory, Livermore, CA 94551 (United States); Department of Environmental Toxicology, University of California, Davis, CA 95616 (United States); Rust, M.K. [Department of Entomology, University of California, Riverside, CA 92521 (United States); Eastmond, D.A. [Department of Cell Biology and Neuroscience, University of California, Riverside, CA 92521 (United States); Vogel, J.S. [Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory, Livermore, CA 94551 (United States)

    2015-10-15

    Trophallaxis between individual worker ants and the toxicant load in dead and live Argentine ants (Linepithema humile) in colonies exposed to fipronil and hydramethylnon experimental baits were examined using accelerator mass spectrometry (AMS). About 50% of the content of the crop containing trace levels of {sup 14}C-sucrose, {sup 14}C-hydramethylnon, and {sup 14}C-fipronil was shared between single donor and recipient ants. Dead workers and queens contained significantly more hydramethylnon (122.7 and 22.4 amol/μg ant, respectively) than did live workers and queens (96.3 and 10.4 amol/μg ant, respectively). Dead workers had significantly more fipronil (420.3 amol/μg ant) than did live workers (208.5 amol/μg ant), but dead and live queens had equal fipronil levels (59.5 and 54.3 amol/μg ant, respectively). The distribution of fipronil differed within the bodies of dead and live queens; the highest amounts of fipronil were recovered in the thorax of dead queens whereas live queens had the highest levels in the head. Resurgence of polygynous ant colonies treated with hydramethylnon baits may be explained by queen survival resulting from sublethal doses due to a slowing of trophallaxis throughout the colony. Bait strategies and dose levels for controlling insect pests need to be based on the specific toxicant properties and trophic strategies for targeting the entire colony.

  5. Active tectonics in the Argentine Precordillera and Western Sierras Pampeanas

    Directory of Open Access Journals (Sweden)

    L.L. Siame

    2006-12-01

    Full Text Available The Andean foreland of western Argentina (28°S-33°S corresponds to retroarc deformations associated with the ongoing flat subduction of the Nazca plate beneath the South American lithosphere. This region is characterized by high levels of seismic activity and crustal active faulting. To improve earthquake source identification and characterization in the San Juan region, data from seismology, structural geology and quantitative geomorphology were integrated and combined to provide a seismotectonic model. In this seismotectonic model, the Andean back-arc of western Argentina can be regarded as an obliquely converging foreland where Plio-Quaternary deformations are partitioned between strike-slip and thrust motions that are localized on the E-verging, thin-skinned Argentine Precordillera, and the W-verging thick-skinned Sierras Pampeanas, respectively. In this seismotectonic model, the Sierra Pie de Palo appears to be a key structure playing a major role in the partitioning of the Plio-Quaternary deformations.

  6. Feeding strategy and cannibalism of the Argentine hake Merluccius hubbsi.

    Science.gov (United States)

    Ocampo Reinaldo, M; González, R; Romero, M A

    2011-12-01

    The diet composition and feeding strategy of the Argentine hake Merluccius hubbsi in the San Matías Gulf were analysed in order to use this information for the sustainable management of the fishery. Merluccius hubbsi behaved as an opportunistic predator. Small M. hubbsi consumed planktonic crustaceans, whereas medium and large fish ate numerous prey taxa with low frequency of occurrence and variable specific abundance. Intra- and intercohort cannibalism were detected in all size groups and were particularly significant in large M. hubbsi. Medium-sized M. hubbsi consumed small conspecifics and large-sized M. hubbsi consumed both small and medium M. hubbsi. These results indicate that the removal of large M. hubbsi by fishing may increase the risk of overfishing by two combined effects: a direct effect of recruitment-overfishing and an indirect effect of growth-overfishing through an enhanced cannibalism of medium M. hubbsi on small M. hubbsi. Intra- and intercohort cannibalism and other trophic relationships in the M. hubbsi should therefore be considered explicitly in stock assessment models.

  7. [Distribution of Lutzomyia longipalpis in the Argentine Mesopotamia, 2010].

    Science.gov (United States)

    Salomon, Oscar D; Fernandez, Maria S; Santini, María S; Saavedra, Silvina; Montiel, Natalia; Ramos, Marina A; Rosa, Juan R; Szelag, Enrique A; Martinez, Mariela F

    2011-01-01

    The first case of visceral leishmaniasis (VL) in Argentina was reported in 2006 in Posadas, Misiones. During the summer 2008-2009 Lutzomyia longipalpis, the VL vector, and canine VL cases were already spread along the province of Corrientes. In order to know the distribution of VL risk, systematic captures of the vector were performed between February and March 2010, in 18 areas of the provinces of Entre Ríos and Corrientes, and the city of Puerto Iguazú, Misiones, with a total of 313 traps/night. We confirmed the presence of Lu. longipalpis, for the first time in Chajarí (Entre Ríos), Alvear, La Cruz, Curuzú Cuatiá and Bella Vista (Corrientes), and Puerto Iguazú (Misiones). In Santo Tome and Monte Caseros (Corrientes), where the vector had been previously reported, traps with more samples were obtained with 830 and 126 Lu. Longipalpis trap/site/night respectively. These results show that the vector of urban VL continues spreading in the Argentine territory. Simultaneously, the spread of the parasite and the resulting human VL cases are associated with the dispersion of reservoirs, infected dogs, with or without clinical symptoms or signs, due to human transit.

  8. Fragile-X mental retardation: molecular diagnosis in Argentine patients.

    Science.gov (United States)

    Florencia, Giliberto; Irene, Szijan; Veronica, Ferreiro

    2006-11-30

    Fragile-X-syndrome (FXS) is the most common type of inherited cognitive impairment. The underlying molecular alteration consists of a CGG-repeat amplification within the FMR-1 gene. The phenotype is only apparent once a threshold in the number of repeats has been exceeded (full mutation). The aim of this study was to characterize the FMR-1 CGG-repeat status in Argentine patients exhibiting mental retardation. A total of 330 blood samples from patients were analyzed by PCR and Southern blot analysis. Initially, DNA from 78 affected individuals were studied by PCR. Since this method is unable to detect high molecular weight alleles, however, we undertook a second approach using the Southern blotting technique to analyze the CGG repeat number and methylation status. Southern blot analysis showed an altered pattern in 14 out of 240 (6%) unrelated patients, with half of them presenting a mosaic pattern. Eight out of 17 families (47%) showed a (suggest deleting highlight). The characteristic FXS pattern was identified in 8/17 families (47%), and in 4 of these families 25% of the individuals presented with a mosaic model. The expansion from pre-mutation to full mutation was shown to occur both at the pre and post zygotic levels. The detection of FXS mutations has allowed us to offer more informed genetic counseling, prenatal diagnosis and reliable patient follow-up.

  9. Perspectives on Argentine Migration to Spain: Oral, Journal and Film Sources

    Directory of Open Access Journals (Sweden)

    Susana Schmidt

    2010-03-01

    Full Text Available This contribution takes up our doctoral research –Argentine migrationto Spain- to share some theoretical-methodological considerations.We refer to the conceptualization of "transnational social spaces," an approach that allows us to consider migration in its double dimension origin/destination and is particularly useful to thing the relationship between migration and creation of social and cultural ties in the Hispano-Argentine or Argentine-Spanish space. Similarly, the transnational spaces approach allows to put in dialog diverse social groups involved in the phenomenon: the migrants themselves, whose life stories are analysed by using oral sources; the society of origin and the host society, analysing collective image through journal sources; the filmmakers, whose migration stories we discussmigration through various fiction films; and, of course, historians and other social scientists who study these migrations.

  10. Argentine experience in the field of illegal immigration.

    Science.gov (United States)

    Villar, J M

    1984-01-01

    This article provides a brief history of Argentine policy toward migratory flows from neighboring countries and Europe, and concludes with statistics on the number of foreigners in Argentina in the 1970-80 period. Measures passed during the 1940s and 1950s were aimed at providing amnesty for foreigners who were residing in Argentina without immigrant status. However, the lack of an adequate administrative structure to regulate foreigners at the borders was a drawback for migration authorities and limited the possiblility of applying admission criteria effectively. By 1970, there were 583,000 foreigners from neighboring countries living in Argentina, which represented a 25% increase from 1960. 42% of these migrants were in the metropolitan region of the country, indicative of a shift away from employment in agriculture. Decree No. 87, passed in 1974, represented an extension of a migration policy aimed at granting ample facilities for permanent residence to aliens from contiguous countries and was designed to prevent abuse of clandestine workers by employers. As a result of this measure, 150,000 foreigners were able to settle legally in the country. A 1981 law, yet to be implemented, establishes a new legal framework aimed at fostering immigration and regulating the admission of foreigners. To attain the objective of settling workers in areas of the country considered of prime importance to economic development, the law provides for infrastructural investments and promotional measures in areas such as tax exemption and the granting of credit. The 1980 National Population Census indicated there were 677,000 foreigners from neighboring countries in Argentina. In that year, foreigners comprised 2.4% of the country's population and 3.1% of the inhabitants of the metropolitan region. These figures are indicative of a decline in the growth of immigration, most likely due to the decline in the purchasing power of workers' salaries in the late 1970s.

  11. DNA barcoding identifies Argentine fishes from marine and brackish waters.

    Directory of Open Access Journals (Sweden)

    Ezequiel Mabragaña

    Full Text Available BACKGROUND: DNA barcoding has been advanced as a promising tool to aid species identification and discovery through the use of short, standardized gene targets. Despite extensive taxonomic studies, for a variety of reasons the identification of fishes can be problematic, even for experts. DNA barcoding is proving to be a useful tool in this context. However, its broad application is impeded by the need to construct a comprehensive reference sequence library for all fish species. Here, we make a regional contribution to this grand challenge by calibrating the species discrimination efficiency of barcoding among 125 Argentine fish species, representing nearly one third of the known fauna, and examine the utility of these data to address several key taxonomic uncertainties pertaining to species in this region. METHODOLOGY/PRINCIPAL FINDINGS: Specimens were collected and morphologically identified during crusies conducted between 2005 and 2008. The standard BARCODE fragment of COI was amplified and bi-directionally sequenced from 577 specimens (mean of 5 specimens/species, and all specimens and sequence data were archived and interrogated using analytical tools available on the Barcode of Life Data System (BOLD; www.barcodinglife.org. Nearly all species exhibited discrete clusters of closely related haplogroups which permitted the discrimination of 95% of the species (i.e. 119/125 examined while cases of shared haplotypes were detected among just three species-pairs. Notably, barcoding aided the identification of a new species of skate, Dipturus argentinensis, permitted the recognition of Genypterus brasiliensis as a valid species and questions the generic assignment of Paralichthys isosceles. CONCLUSIONS/SIGNIFICANCE: This study constitutes a significant contribution to the global barcode reference sequence library for fishes and demonstrates the utility of barcoding for regional species identification. As an independent assessment of alpha

  12. Genetic variability and population structure in loci related to milk production traits in native Argentine Creole and commercial Argentine Holstein cattle

    Directory of Open Access Journals (Sweden)

    Golijow C.D.

    1999-01-01

    Full Text Available Many cattle breeds have been subjected to high selection pressure for production traits. Consequently, population genetic structure and allelic distribution could differ in breeds under high selection pressure compared to unselected breeds. Analysis of k-casein, aS1-casein and prolactin gene frequencies was made for Argentine Creole (AC and Argentine Holstein (AH cattle herds. The calculated FST values measured the degree of genetic differentiation of subpopulations, depending on the variances of gene frequencies.The AC breed had considerably more variation among herds at the aS1-casein and k-casein loci. Conservation strategies should consider the entire AC population in order to maintain the genetic variability found in this native breed.

  13. Argentine Hydrellia Robineau-Desvoidy (Diptera, Ephydridae): new species and key to identification.

    Science.gov (United States)

    Rodrigues Júnior, Francisco De Assis; Mathis, Wayne Nielsen; Hauser, Martin

    2015-05-13

    Hydrellia egeriae sp. nov., a new species of Hydrellia from Campana (34 14' 04 S, 58 52' 32 W) and Hurlingham (3435'14 S, 5838'27 W), Buenos Aires province, Argentina is described. A key to the Argentine Hydrellia species is presented.

  14. English as an Instrumental Language: Language Displacement in the Anglo-Argentine Community.

    Science.gov (United States)

    Cortes-Conde, Florencia

    1994-01-01

    Surveyed 99 Anglo-Argentine students aged 10 through 18 at five Spanish-English bilingual schools in Buenos Aires about their language attitudes and usage. It found that, despite the prestige of the English language, Spanish had become the dominant language for most. Age and place of residency in Buenos Aires also had a significant effect on…

  15. Powerful motors: Kinship, citizenship and the transformation of the Argentine oil industry

    Science.gov (United States)

    Shever, Elana

    The privatization of the Argentine oil industry has been described as an unprecedented transfer of property, capital and control from the state to the corporate sphere, but this study demonstrates that the privatization process is better understood as a transformation of the historical configurations of oil-fueled development, political communities and human subjectivities. This dissertation probes the development of the state-led oil industry, and the shift to a corporate-led one, through an ethnography of Argentines differently positioned in relation to the global oil industry. The ethnography explores the lives of middle class oil workers and their families in Northwest Patagonia, impoverished residents of the shanty neighborhoods near the refineries in metropolitan Buenos Aires, and affluent employees of the translocal corporations operating in the Argentine oil fields. After the Introduction delineates this study's four principal interventions into anthropological scholarship, each subsequent chapter engages a particular problem that cuts across the Argentine oil fields and the anthropological theoretical fields. Chapter Two scrutinizes the historical construction of the Argentine subterritory as a "natural" space of value. Chapters Three and Four investigate the articulation of capitalist production and filial reproduction. These chapters argue that sentiment is a crucial generative force that has shaped the oil industry, company towns and worker families from the founding of the state-owned oil company in beginning of the twentieth century to its conversion into a corporate-owned one at the century's close. Chapters Five and Six examine the emergence of consumer citizenship and corporate citizenship out of Argentine neoliberalismo and its transformation of the oil industry. They argue that consumer and corporate citizenship are both reformulations of the older traditions of liberalism and Peronism. All the chapters of this dissertation illustrate that the

  16. Comparative leaf anatomy in argentine Galactia species Anatomía comparada de hoja en especies argentinas de Galactia

    OpenAIRE

    G. M. Tourn; M. T. Cosa; G. G. Roitman; Silva,M.P.

    2009-01-01

    A comparative study of anatomical characters of the leaves of argentine species of Genera Galactia was carried out in order to evaluate their potential value in Taxonomy. In Argentine 14 species and some varieties from Sections Odonia and Collaearia can be found. Section Odonia: G. benthamiana Mich., G. dubia DC., G. fiebrigiana Burkart var. correntina Burkart, G. glaucophylla Harms, G. gracillima Benth., G. latisiliqua Desv., G. longifolia (Jacq.) Benth., G. marginalis Benth., G. striata (Ja...

  17. Update of the BIPM comparison BIPM.RI(II)-K1.Co-60 of activity measurements of the radionuclide 60Co to include the 2011 result of the CNEA (Argentina), the 2012 results of the BARC (India) and the NRC (Canada), and the 2014 result of the NIM (China)

    Science.gov (United States)

    Michotte, C.; Ratel, G.; Courte, S.; Arenillas, P.; Balpardo, C.; Joseph, L.; Anuradha, R.; Kulkarni, D. B.; Galea, R.; Moore, K.; Stroak, A.; Zhang, Ming; Liang, Juncheng; Liu, Haoran

    2017-01-01

    Since 2010, four national metrology institutes (NMI) have each submitted a sample of known activity of 60Co to the International Reference System (SIR) for activity comparison at the Bureau International des Poids et Mesures (BIPM), with comparison identifier BIPM.RI(II)-K1.Co-60. The values of the activity submitted were between about 175 kBq and 1600 kBq. The primary standardization results for the CNEA, Argentina and the BARC, India replace their earlier result of 2003 and 2001, respectively. There are now seventeen results in the BIPM.RI(II)-K1.Co-60 comparison. The key comparison reference value (KCRV) has been updated using the power-moderated weighted mean. The degrees of equivalence between each equivalent activity measured in the SIR and the KCRV have been calculated and the results are given in the form of a table. A graphical presentation is also given. Main text To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/. The final report has been peer-reviewed and approved for publication by the CCRI, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

  18. Abstract bodies, concrete risks: clinical devices and the health of ova donors in Argentine reproductive medicine

    OpenAIRE

    Lucía Ariza

    2016-01-01

    Using a methodological perspective grounded in science and technology studies, this article analyzes two sociotechnical devices used in Argentine reproductive medicine (biostatistical measures and donation registries) with the aim of controlling both the so-called “genetic risk” arising from the use of donated ova as well as the health risks to female donors. By examining how the deployment of monitoring criteria disregards the specificity of ova donation, the article suggests that it is not ...

  19. Therapeutic Argentine tango dancing for people living with Parkinson’s disease: a feasibility study

    OpenAIRE

    Blandy, Laura M.; Meg E. Morris; Winifred A Beevers

    2015-01-01

    Background: Individuals living with Parkinson’s disease (PD) can experience a range of movement disorders. Therapeutic dance is enjoyable and thought to improve mobility, balance and well being in some people with PD. The primary objective of this study was to evaluate the feasibility and safety of a 4 week Argentine tango dance program for people with PD. Methods: Six community dwelling individuals with mild-moderate PD were recruited from Parkinson’s support groups, movement disorder clini...

  20. The Falklands War: Understanding the Power of Context in Shaping Argentine Strategic Decisions

    Science.gov (United States)

    2007-09-01

    Malvinas—La Defensa de Puerto Argentino, Comandos en Accion and Testimonio de su Gobernador.65 Additional insight into the origins of the conflict can be... planning . For a defending force, in this case the Argentines, the goal 128 Stewart, 60. 129... planned naval movement against the British task force. The attack was to be a two-pronged assault with the Belgrano leading the southern element of

  1. Viral Strain Dependent Differences in Experimental Argentine Hemorrhagic Fever (Junin Virus) Infection of Guinea Pigs

    Science.gov (United States)

    1988-01-01

    Nacional de Estudios Sobre Virosis Hemorragicas, Pergamino, Province de Buenos Aires, S Argentina Key Words. Argentine hemorrhagic fever virus • Junin...Gonzalez, P.H.: Maiztegui. J. I.: plaques. Proc. Soc. exp. Biol. Med. 130:1013 1019 Laguens, R.P.: Estudio morfologico de la medula (1969). osea humana en... casos de fiebre hemorra- Atlanta 1976). gica Argentina. Pensa med. Argentina 56.605 614 14 The Subcommittee on Arbovirus Laborator (1969). Safety of

  2. Draft Genome Sequences of Four Enterococcus faecium Strains Isolated from Argentine Cheese

    Science.gov (United States)

    Martino, Gabriela P.; Quintana, Ingrid M.; Espariz, Martín; Blancato, Victor S.; Gallina Nizo, Gabriel; Esteban, Luis

    2016-01-01

    We report the draft genome sequences of four Enterococcus faecium strains isolated from Argentine regional cheeses. These strains were selected based on their technological properties, i.e., their ability to produce aroma compounds (diacetyl, acetoin, and 2,3-butanediol) from citrate. The goal of our study is to provide further genetic evidence for the rational selection of enterococci strains based on their pheno- and genotype in order to be used in cheese production. PMID:26847907

  3. Efficacy of Argentine propolis formulation for topical treatment of canine otitis externa

    OpenAIRE

    L.A Lozina; M.E Peichoto; S.I Boehringer; P. Koscinczuk; G.E Granero; O.C Acosta

    2010-01-01

    The therapeutic effects of Argentine propolis ear drop formulation on canine otitis externa were evaluated. Forty-eight dogs with symptoms of otitis externa were randomly assigned to double-blinded, controlled clinical trial to evaluate the efficacy of topical formulation with propolis versus a topical placebo in the treatment of otitis externa. The propolis preparation and placebo were administrated into both external ear canals, twice daily for 14 days. Throughout the study, clinical examin...

  4. Inhibition of cyclooxygenase activity by standardized hydroalcoholic extracts of four Asteraceae species from the Argentine Puna

    OpenAIRE

    Alberto,M.R.; Zampini,I.C.; Isla, M. I.

    2009-01-01

    We determined the anti-inflammatory activity of standardized extracts of four medicinal plant species (Baccharis incarum, B. boliviensis, Chuquiraga atacamensis, Parastrephia lucida) that grow in the Argentine Puna (3800 m above sea level) and that are used to reduce oxidative stress and alleviate gout and arthritic pain. The extracts of plant aerial parts were standardized in terms of total phenolic compounds and flavone/flavanone content and free radical scavenging activity. All extracts sh...

  5. The executive and legislative branches and trade unions in the Argentine social security reform

    Directory of Open Access Journals (Sweden)

    Sidney Jard da Silva

    2007-01-01

    Full Text Available This article analyzes the interaction between organized labor and government during reform of the pension system in Argentina. The purpose is to investigate the political and institutional conditions favorable to the inclusion of trade unions in a negotiated pension reform process. The Argentine pattern of union-government interaction was shown to be shaped more by the peculiarities of the decision-making process than by the demands and power of union organizations.

  6. Hydrological cycles and trends in the NW Argentine Andes since 1940

    Science.gov (United States)

    Castino, Fabiana; Bookhagen, Bodo; Strecker, Manfred

    2016-04-01

    Strong spatiotemporal variability characterizes the hydrometeorological pattern in the NW Argentine Andes, draining parts of the most populated and economically important areas of South America. During the summer monsoon season (DJF), the eastern flanks of the central Andes are characterized by deep convection, exposing them to extreme hydrometeorological events. These often result in floods and landslides with disastrous effects on the local populations. Here, we analyze river discharge to explore long-term hydrological variability in NW Argentine Andes and the linked climate controlling processes. We rely on 13 daily river discharge time series relevant to drainage basins spanning several size orders (102-104 km2) starting in 1914 and define different hydro-climate indices both for the mean and the extreme hydrological events. We apply quantile regression to investigate long-term trends and spectral analysis associated with cross-correlation with SST-based climate indices to identify links to large-scale climate variability modes. River discharge presents a pronounced and coherent variability signal in South America, particularly for wide drainage basins, such as the Amazon and Paraná/La Plata rivers, strongly associated to Pacific and Atlantic Oceans Sea Surface Temperature (SST) anomalies (i.e. ENSO, PDO, AMO). Our analysis evidences that in the NW Argentine Andes, mean discharge values are characterized by statistically significant, mostly positive, long-term trends since 1940, whereas the extreme events present a more non-unidirectional trend pattern. Also, coherent multi-annual to multi-decadal cycles characterizing the discharge pattern have been identified, suggesting that processes linked to SST anomaly-modes strongly control the hydrometeorology variability in the NW Argentina Andes.

  7. Hantavirus reservoir Oligoryzomys longicaudatus spatial distribution sensitivity to climate change scenarios in Argentine Patagonia

    Directory of Open Access Journals (Sweden)

    González Paula LM

    2009-07-01

    Full Text Available Abstract Background Oligoryzomys longicaudatus (colilargo is the rodent responsible for hantavirus pulmonary syndrome (HPS in Argentine Patagonia. In past decades (1967–1998, trends of precipitation reduction and surface air temperature increase have been observed in western Patagonia. We explore how the potential distribution of the hantavirus reservoir would change under different climate change scenarios based on the observed trends. Methods Four scenarios of potential climate change were constructed using temperature and precipitation changes observed in Argentine Patagonia between 1967 and 1998: Scenario 1 assumed no change in precipitation but a temperature trend as observed; scenario 2 assumed no changes in temperature but a precipitation trend as observed; Scenario 3 included changes in both temperature and precipitation trends as observed; Scenario 4 assumed changes in both temperature and precipitation trends as observed but doubled. We used a validated spatial distribution model of O. longicaudatus as a function of temperature and precipitation. From the model probability of the rodent presence was calculated for each scenario. Results If changes in precipitation follow previous trends, the probability of the colilargo presence would fall in the HPS transmission zone of northern Patagonia. If temperature and precipitation trends remain at current levels for 60 years or double in the future 30 years, the probability of the rodent presence and the associated total area of potential distribution would diminish throughout Patagonia; the areas of potential distribution for colilargos would shift eastwards. These results suggest that future changes in Patagonia climate may lower transmission risk through a reduction in the potential distribution of the rodent reservoir. Conclusion According to our model the rates of temperature and precipitation changes observed between 1967 and 1998 may produce significant changes in the rodent

  8. A new species of Havelockia Pearson, 1903 from the Argentine Sea (Holothuroidea: Dendrochirotida: Sclerodactylidae).

    Science.gov (United States)

    Martinez, Mariano I; Thandar, Ahmed S; Penchaszadeh, Pablo E

    2013-02-04

    Havelockia pegi sp. nov., is here described from shallow waters of the Argentine Sea. This new species is distinctive in the purple colouration of its tentacles, scarcity of body wall ossicles and the presence of rosette-shaped ossicles in both the introvert and the tentacles. It is not closely related to any of its congenors. This is the first record of a true sclerodactylid from Argentina. Thandarum hernandezi Martinez & Brogger, 2012, described in the family Sclerodactylidae, is now classified in the family Sclerothyonidae.

  9. The argentine territory as an international venue for the administration of punishment

    OpenAIRE

    Argenti, Natalia

    2014-01-01

    El objetivo principal de este trabajo es poner de relieve los múltiples problemas que deberían afrontarse para que las cárceles argentinas administren las penas de acuerdo con el Estatuto de Roma (art. 103). La propuesta tiene eficacia cuantificable en términos del tratamiento humanitario de los reos y promueve, en general, el ejercicio de sus derechos más vitales y básicos. The primary goal of this work is to highlight the various problems that should be addressed so that Argentine prison...

  10. Equity during an economic crisis: financing of the Argentine health system.

    Science.gov (United States)

    Cavagnero, Eleonora; Bilger, Marcel

    2010-07-01

    This article analyses the redistributive effect caused by health financing and the distribution of healthcare utilization in Argentina before and during the severe 2001/2002 economic crisis. Both dramatically changed during this period: the redistributive effect became much more positive and utilization shifted from pro-poor to pro-rich. This clearly demonstrates that when utilization is contingent on financing, changes can occur rapidly; and that an integrated approach is required when monitoring equity. From a policy perspective, the Argentine health system appears vulnerable to economic downturns mainly due to high reliance on out-of-pocket payments and the strong link between health insurance and employment.

  11. The first study of the micro-fauna of middle Cambrian olistoliths in the Argentine Precordillera

    OpenAIRE

    Fahlgren, Elise; Tranvik, Maria

    2015-01-01

    This study implies a survey of a somewhat unexplored Cambrian carbonate formation in the Argentine Precordillera (AP) located in western Argentina, close to the city of San José de Jáchal. The carbonate platform of the AP is a unique piece of the South American geology and is in this study partly surveyed and compared with the Stephen Formation of northern Canada, a middle Cambrian unit renowned for its contents of exceptionally well preserved soft bodied fossils named the Burgess Shale biota...

  12. The widespread collapse of an invasive species: Argentine ants (Linepithema humile) in New Zealand

    OpenAIRE

    2011-01-01

    Synergies between invasive species and climate change are widely considered to be a major biodiversity threat. However, invasive species are also hypothesized to be susceptible to population collapse, as we demonstrate for a globally important invasive species in New Zealand. We observed Argentine ant populations to have collapsed in 40 per cent of surveyed sites. Populations had a mean survival time of 14.1 years (95% CI = 12.9–15.3 years). Resident ant communities had recovered or partly re...

  13. Graphic correlation of Argentine Precordillera and North American Lower/Middle Ordovician sections

    Institute of Scientific and Technical Information of China (English)

    Walter C.Sweet; Guillermo L.Albanesi

    2006-01-01

    @@ Present work demonstrates that a level equivalent to the proposed Whiterockian basal GSSP can be located graphically in a composite section anchored by the Niquivil section of the Argentine Precordillera. The FAD of Cooperignathus aranda in the Niquivil composite section, a candidate for GSSP of the Lower/Middle Ordovician boundary, projects to a level very close to the FAD of Tripodus laevis in the Whiterockian reference section. The conodont-based framework reported here includes the potential for recognition of the proposed Whiterock Canyon-based GSSP, the Cooperignathus aranda-based GSSP, and, possibly, the Baltoniodus triangularisbased GSSP, recently proposed.

  14. Determination of TBT in water and sediment samples along the Argentine Atlantic coast.

    Science.gov (United States)

    de Waisbaum, R G; Rodriguez, C; Nudelman, N Sbarbati

    2010-11-01

    Cases of imposex have been reported for some organisms living in areas of the Argentine Atlantic coast. Since this is one of the known effects of the anti-fouling agent tributyltin (TBT), quantitative determinations of organotins in samples of water and sediments collected from sites along the Argentine coast were carried out. Severe cases of imposex were first reported for two gastropod species living in the Mar del Plata area, and determinations of TBT in samples collected from this site gave extremely high values and showed a close correlation between the degree of imposex and TBT concentration. Recent investigations in the area have shown a significant decrease. Surveys were also conducted in sites that exhibit highly irregular coastal profiles to examine the relevance of physical environments. Alarming concentrations of TBT were determined in most of the sites where heavy boat traffic and/or marine activities occur, demonstrating the urgent need for regulations to avoid further input of TBT. Reports from other sites in South America reveal that this should be a subject of regional concern in order to avoid severe damage to the biodiversity of regional marine organisms.

  15. High-resolution stable isotope stratigraphy of the upper Cambrian and Ordovician in the Argentine Precordillera

    DEFF Research Database (Denmark)

    Sial, A.N.; Peralta, S.; Gaucher, C.;

    2013-01-01

    We report the occurrence of important carbon isotope excursions in early Paleozoic formations of the Eastern and Central Argentine Precordillera. The Steptoean positive isotope carbon excursion (SPICE) is known from North America, Kazakhstan, South China, Australia and South America, and the nega......We report the occurrence of important carbon isotope excursions in early Paleozoic formations of the Eastern and Central Argentine Precordillera. The Steptoean positive isotope carbon excursion (SPICE) is known from North America, Kazakhstan, South China, Australia and South America......, and the negative isotope carbon excursion (SNICE) has been described for the first time in South America. We report here the record of the SPICE and SNICE in a single section in the Eastern Precordillera. In the Central Precordillera, a minor middle Darriwilian positive carbon isotope excursion (MDICE) and a late...... Sandbian positive isotope carbon excursion, the GICE (~ + 3‰; C. bicornis biozone) are reported from two sections. One pre-GICE positive carbon-isotope excursion (Sandbian Sa1, N. gracilis biozone) in the Central Precordillera with a δ13C peak of ~ + 2‰ is, perhaps, equivalent to the positive Spechts Ferry...

  16. Nutrition and interference competition have interactive effects on the behavior and performance of Argentine ants.

    Science.gov (United States)

    Kay, Adam D; Zumbusch, Taylor; Heinen, Justa L; Marsh, Tom C; Holway, David A

    2010-01-01

    Food availability often influences competitive outcomes through effects on consumer growth. Although it has received less attention, food availability may also affect competition through nutritional effects on behavior. One hypothesis linking nutrition and competition in ants posits that increased access to carbohydrates favors greater investment in worker traits that underlie behavioral dominance. We tested this hypothesis by varying dietary protein:carbohydrate (P:C) ratios and levels of interspecific interference for Argentine ants (Linepithema humile), a widespread invasive species. As predicted, colonies facing interference increased patrolling more when reared on low P:C diets; this result is the first demonstration of an interactive effect of nutrition and interference on ant colonies. Several results suggest that this dietary effect on patrolling was due primarily to changes in colony size rather than worker behavior. Colonies on lower P:C diets had lower worker mortality and larger final colony sizes. Diet had little effect on per capita patrolling, and worker behavior in performance assays depended more on previous exposure to interference than on diet. Our findings indicate that dietary P:C ratios can influence Argentine ant performance in a competitive environment and suggest a mechanism by which monopolization of carbohydrate-rich resources can help invasive ants displace native ant competitors.

  17. Optimisation in a natural system: Argentine ants solve the Towers of Hanoi.

    Science.gov (United States)

    Reid, Chris R; Sumpter, David J T; Beekman, Madeleine

    2011-01-01

    Natural systems are a source of inspiration for computer algorithms designed to solve optimisation problems. Yet most 'nature-inspired' algorithms take only superficial inspiration from biology, and little is known about how real biological systems solve difficult problems. Moreover, ant algorithms, neural networks and similar methods are usually applied to static problems, whereas most biological systems have evolved to perform under dynamically changing conditions. We used the Towers of Hanoi puzzle to test whether Argentine ants can solve a potentially difficult optimisation problem. We also tested whether the ants can adapt to dynamic changes in the problem. We mapped all possible solutions to the Towers of Hanoi on a single graph and converted this into a maze for the ants to solve. We show that the ants are capable of solving the Towers of Hanoi, and are able to adapt when sections of the maze are blocked off and new sections installed. The presence of exploration pheromone increased the efficiency of the resulting network and increased the ants' ability to adapt to changing conditions. Contrary to previous studies, our study shows that mass-recruiting ant species such as the Argentine ant can forage effectively in a dynamic environment. Our results also suggest that novel optimisation algorithms can benefit from stronger biological mimicry.

  18. The cycles of Argentine wine exports / Los ciclos de las exportaciones de vino argentinas

    Directory of Open Access Journals (Sweden)

    Cerdá Juan Manuel

    2016-01-01

    Full Text Available This paper analyses the different episodes that the Argentina wine industry transited between the years 1980 to 2012, within a context of globalization of the wine-grape industry. In particular, we study the significance that some winemakers had in the process and the effect of the exchange rate and recipients of Argentine wine in the expansion of exports in recent years. The hypothesis of this article is that, from the 80 s, the winemakers observed in exports as a solution to face their most important crisis. This required a transformation of the industry to produce quality wines that could be sold on the international market. Thus, winemakers added to a century-old winemaking tradition new practices and strategies. On the other hand, over 30 years, various macroeconomic policies affect the overall industry growth, especially in exports. On balance, in this paper we propose to show that the growth of exports of Argentine wine was a sinuous and different path to the literature has been found for the “new world” exporters countries. The data was obtained from Instituto Nancional de Vitivinícultura (INV, Bolsa de Comercio de Mendoza and International Organisation of Vine and Wine (OIV as well as interviews collected on primary and secondary sources.

  19. Conflits et coopérations en territoire montagnard Mapuche (Argentine

    Directory of Open Access Journals (Sweden)

    Renaud Miniconi

    2010-03-01

    Full Text Available La question des autochtones est devenue, durant les deux dernières décennies, une préoccupation majeure dans différents pays du monde, comme en Argentine où environ 600 000 individus se reconnaissent comme tels, soit 1,5 % de sa population totale. Toutefois, ces populations sont encore trop souvent marginalisées à l’échelle de certaines régions, comme c’est le cas pour les Mapuche du Parc National Nahuel Huapi, situé dans les provinces du Rio Negro et de Neuquén. Si les textes internationaux et parfois nationaux réhabilitent certains droits humains essentiels de ces populations, les réalités locales sont plus contrastées, du fait d’intérêts souvent divergents des acteurs régionaux. Dans le contexte particulier d’une Argentine marquée par des difficultés d’accès à la propriété foncière pour une large part de la population, les parcs nationaux se révèlent être des outils pertinents, pour les populations autochtones, de recouvrement de leurs terres ancestrales, grâce en particulier aux processus de co-gestion participative mise en place sur ces territoires.

  20. Prosecuting International Crimes at National Level: Lessons from the Argentine ‘Truth-Finding Trials’

    Directory of Open Access Journals (Sweden)

    Elena Maculan

    2012-01-01

    Full Text Available Truth-finding trials (juicios por la verdad constitute a novel solution devised by the Argentine judicial system to cope with crimes committed by the past military dictatorship. This mechanism uses criminal courts as well as criminal procedure in order to investigate the truth about the dictatorship's crimes; however, the trials allow judges neither to establish criminal responsibility nor to punish the perpetrators of crimes. This limitation is due to the inability, imposed by the Full Stop and Due Obedience Laws, to prosecute the perpetrators of crimes.From the perspective of criminal law, truth-finding trials present two problematic features: firstly, their creation and regulation are set by judges, which has caused the development of many non-homogeneous local solutions and, secondly, their hybrid nature, which entails a possible subversion of conventional forms and goals in the context of the criminal trial.The paper also describes the current situation, since the Argentine impunity laws were declared unconstitutional and criminal proceedings reopened. The new framework provokes questions about the relationship between the reopened criminal trials and the truth-finding investigations, not only with regard to evidentiary issues but also with respect to the reason why the truth-finding investigations are still held.Finally, the shift from a non-punitive approach to the current full criminal accountability seems to suggest that truth-finding trials were merely a temporary solution, while the notion of the full prosecution and punishment of State crimes was never really set aside.

  1. Efficacy of Argentine propolis formulation for topical treatment of canine otitis externa

    Directory of Open Access Journals (Sweden)

    L.A Lozina

    2010-12-01

    Full Text Available The therapeutic effects of Argentine propolis ear drop formulation on canine otitis externa were evaluated. Forty-eight dogs with symptoms of otitis externa were randomly assigned to double-blinded, controlled clinical trial to evaluate the efficacy of topical formulation with propolis versus a topical placebo in the treatment of otitis externa. The propolis preparation and placebo were administrated into both external ear canals, twice daily for 14 days. Throughout the study, clinical examination and microbiological analysis of dogs ear exudates were made. The most frequent microorganisms isolated in culture media were: Malassezia pachydermatis (54.2%, Staphylococcus aureus (43.8%, coagulase-negative Staphylococcus (25.0%, Pseudomonas aeruginosa (20.8%, Candida albicans (18.8%, Proteus mirabilis (16.7%, Streptococcus spp. (16.7%, Enteroccocus faecalis (12.5%, Escherichia coli (12.5%, Staphylococcus intermedius (6.3%, Klebsiella spp. (4.2%, andCandida glabrata (2.1%. Whereas the control group did not recover from the infectious ear disease, the propolis preparation exhibited antimicrobial activity against most of the microorganisms isolated from samples of the treated group. In addition, no propolis-adverse effects were observed. This allowed propolis-treated patients to show a significant improvement of the clinical parameters. Thus, this new Argentine propolis ear drop formulation may be used for topical treatment of otitis externa in dogs.

  2. Analysis of genetic diversity and population structure in Argentine and Bolivian Creole cattle using five loci related to milk production

    Directory of Open Access Journals (Sweden)

    Lirón J.P.

    2002-01-01

    Full Text Available Data from five protein-coding loci related to dairy production were used to study the genetic diversity and population structure of Argentine and Bolivian Creole cattle breeds. Genomic DNA was extracted from blood samples of six Creole cattle breeds: Argentine (n = 230, Patagonian (n = 25; "Saavedreño" (n = 140, "Chaqueño Boliviano" (n = 30, "Yacumeño" (n = 27, and "Chusco" (n = 11. kappa-casein, beta-lactoglobulin, growth hormone and prolactin were measured by PCR-RFLP, while alphaS1-casein was typed by PCR-ASO. The results are discussed, focusing on: historical origin, recent differentiation and selection events, Zebu gene introgression, and population structure. This work shows that: (i For the studied genes, the observed gene frequency profiles of Argentine and Bolivian Creole cattle breeds were close to the data reported for Iberian breeds and for other South-American Creole cattle breeds which are historically related; (ii although Zebu gene introgression has been reported at the studied loci, these breeds seem to be far from the Zebu gene frequency profiles; and (iii the Argentine and Bolivian Creole cattle showed significant levels of subdivision, but each population has maintained its degree of genetic variability.

  3. Abstract bodies, concrete risks: clinical devices and the health of ova donors in Argentine reproductive medicine

    Directory of Open Access Journals (Sweden)

    Lucía Ariza

    2016-10-01

    Full Text Available Using a methodological perspective grounded in science and technology studies, this article analyzes two sociotechnical devices used in Argentine reproductive medicine (biostatistical measures and donation registries with the aim of controlling both the so-called “genetic risk” arising from the use of donated ova as well as the health risks to female donors. By examining how the deployment of monitoring criteria disregards the specificity of ova donation, the article suggests that it is not the absence of control measures and clinical criteria that produces an inadequate monitoring of such risks, but rather the concrete ways in which such measures are implemented that results in potential harms to the health of female donors.

  4. The widespread collapse of an invasive species: Argentine ants (Linepithema humile) in New Zealand.

    Science.gov (United States)

    Cooling, Meghan; Hartley, Stephen; Sim, Dalice A; Lester, Philip J

    2012-06-23

    Synergies between invasive species and climate change are widely considered to be a major biodiversity threat. However, invasive species are also hypothesized to be susceptible to population collapse, as we demonstrate for a globally important invasive species in New Zealand. We observed Argentine ant populations to have collapsed in 40 per cent of surveyed sites. Populations had a mean survival time of 14.1 years (95% CI = 12.9-15.3 years). Resident ant communities had recovered or partly recovered after their collapse. Our models suggest that climate change will delay colony collapse, as increasing temperature and decreasing rainfall significantly increased their longevity, but only by a few years. Economic and environmental costs of invasive species may be small if populations collapse on their own accord.

  5. Loss of Wolbachia infection during colonisation in the invasive Argentine ant Linepithema humile

    DEFF Research Database (Denmark)

    Reuter, M.; Pedersen, Jes Søe; Keller, L.

    2005-01-01

    the phylogenies of Wolbachia and its arthropod hosts indicate that infection is frequently lost, but the causes of symbiont extinction have so far remained elusive. Here, we report data showing that colonisation of new habitats is a possible mechanism leading to the loss of infection. The presence and prevalence...... of Wolbachia were studied in three native and eight introduced populations of the Argentine ant Linepithema humile. The screening shows that the symbiont is common in the three native L. humile populations analysed. In contrast, Wolbachia was detected in only one of the introduced populations. The loss...... of infection associated with colonisation of new habitats may result from drift (founder effect) or altered selection pressures in the new habitat. Furthermore, a molecular phylogeny based on sequences of the Wolbachia wsp gene indicates that L. humile has been infected by a single strain. Horizontal...

  6. Moessbauer study of the Fe mineralogy in two different Argentine soils

    Energy Technology Data Exchange (ETDEWEB)

    Mijovilovich, A. [Departamento de Fisica, Comision Nacional de Energia Atomica (Argentina); Morras, H. [Instituto de Suelos, INTA-CIRN (Argentina); Causevic, H. [Universidad de Buenos Aires, Ciudad Universitaria, Facultad de Ciencias Exactas y Naturales (Argentina); Saragovi, C. [Departamento de Fisica, Comision Nacional de Energia Atomica (Argentina)

    1999-11-15

    Two Argentine soils featuring different characteristics and compositions (mollisols and ultisols) have been studied by Moessbauer spectroscopy and X-ray diffraction. The first type has a weakly developed profile with a solum thickness of 40 cm; the Fe oxyhydroxides are present in low concentrations in mixtures with other slightly weathered minerals (e.g., quartz, feldspars, 2 : 1 phyllosilicates, etc.). The second one is a typic kandihumult, which is a highly weathered red coloured, deep soil. The Fe oxyhydroxides are abundant, mixed mainly with kaolinite clay minerals. Analyses of iron mineralogy show hematite and goethite in both soils. Their ratio is low in the first case and high in the last case. Magnetite-maghemite are also present in both situations, but in the mollisol their content is much lower than in the ultisol. The mineralogy found is related to the different lithological characteristics and processes of pedological evolution on both soils.

  7. Copi et Puig, ovnis du théâtre argentin ?

    OpenAIRE

    Souquet, Lionel

    2015-01-01

    C’est en 1968 que Copi (Raúl Damonte Botana, 1939-1987) publie sa première pièce, La journée d’une rêveuse puis, un an plus tard, la très iconoclaste Eva Peron. Par son milieu familial, Copi a baigné dès l’enfance dans la vie théâtrale internationale et a été fortement influencé par sa grand-mère, la dramaturge anarcho-féministe Salvadora Medina Onrubia de Botana. Mais, vivant en exil avec sa famille, Copi est coupé de la réalité de la scène argentine et il écrit d’ailleurs ses premières pièc...

  8. Screening of plants used in Argentine folk medicine for antimicrobial activity.

    Science.gov (United States)

    Anesini, C; Perez, C

    1993-06-01

    Screening of 132 extracts from Argentine folk-medicinal plants for antimicrobial activity has been conducted using a penicillin G resistant strain of Staphylococcus aureus, Escherichia coli and Aspergillus niger as test microorganisms. Cephazolin, ampicillin and miconazole were used as standard antibiotics and concentration-response curves were obtained using the agar-well diffusion method. Boiling water extracts of plant materials were tested and 12 species were active against Staphylococcus aureus, whereas 10 were effective against Escherichia coli and 4 against Aspergillus niger. Tabebuia impetiginosa bark, Achyrocline sp. aerials parts, Larrea divaricata leaves, Rosa borboniana flowers, Punica granatum fruit pericarp, Psidium guineense fruit pericarp, Lithrea ternifolia leaves and Allium sativum bulbs produced some of the more active extracts.

  9. [Candid#1 vaccine against Argentine hemorrhagic fever produced in Argentina. Immunogenicity and safety].

    Science.gov (United States)

    Enria, Delia A; Ambrosio, Ana M; Briggiler, Ana M; Feuillade, María Rosa; Crivelli, Eleonora

    2010-01-01

    A clinical study in 946 human volunteers was done to compare Candid #1 vaccine manufactured in Argentina with the vaccine produced in USA that had been previously used. The efficacy was evaluated using immunogenicity measured by the detection of neutralizing antibodies as a subrogate marker. Safety was evaluated comparing the rate of adverse events. Both vaccines showed a comparable rate of seroconversion, slightly higher than the efficacy estimated from previous studies (95.5%). There were no severe adverse events related to the vaccines. The general events considered related to the vaccines were not clinically relevant and disappeared either spontaneously or with symptomatic treatment. Similar rates of adverse events (29.9% for the Argentine vaccine and 35.0% for the USA vaccine) were found for both vaccines. These included: headache, weakness, myalgias, mild low blood cell (ANMAT).

  10. RECENT TRANSFORMATIONS IN THE ARGENTINE OIL INDUSTRY: THE YPF CASE, 1989-2012

    Directory of Open Access Journals (Sweden)

    Esteban Serrani

    2013-06-01

    Full Text Available The objective of the paper is to analyze the path of the state oil company YPF, from privatization to its expropriation (1989-2012. In this process, it has a special emphasis on the identification and analysis of national peculiarities that explain why in the ‘90s YPF, one of the nation’s premier companies in history, was fully privatized (counter to the regional experience in Mexico, Venezuela and Brazil; and how, just twenty years later, the same company was again in state control, with an expropriation which was widely popular and parliamentary support. It also reviews the main consequences of deregulation and the opening in the Argentine oil sector, especially in the performance of --- since acquired all shares of YPF in 1999, to explain this path.

  11. Ethical and Civic Education. Difficulties during the Curricular Reform in Argentine Patagonia

    Directory of Open Access Journals (Sweden)

    Isabelino Siede

    2015-04-01

    Full Text Available DOI: http://dx.doi.org/10.17227/01234870.41folios51.68 What type of ethical and civic education is effectively provided at school? This article analyzes the curricular prescriptions of Ethical and Citizenship Education in primary schools of the Argentine Patagonia, as well as its relations and contradictions with the school practices of moral education It inquires the process of definition of the area in the context of the Educational Reform in the 90s. Also, it pursuits to remake the way it was incorporated in the provincial curriculum design. Throughout focus groups and interviews to teachers from different public and private schools of three towns from de north of Santa Cruz, we analyze the descriptions and expectative of the teachers about their teaching practice in the moral area, as well as the possible causes of the differences and the contradictions between the policies of the curricular statement and educational proposals offered at school.

  12. Use of remote sensing and GIS to identify Flamingo habitat in the Argentine Altiplano

    Science.gov (United States)

    Boyle, Susan C.; Hoffer, Roger M.; Boyle, Terence P.; Bucher, Enrique H.

    1992-01-01

    The Argentine altiplano is a remote area which has never been adequately mapped. It is an arid region with harsh climate, little vegetation, sparse population, and an average elevation of over 3,500 feet. Little is known about the large populations of three species of flamingos which nest and feed in the altiplano lakes. In a study funded by the National Geographic Society satellite data (Landsat MSS and TM data) were used to map the location of major water bodies and to analyze the spectral characteristics of the aquatic ecosystems in the altiplano. A comparison of the two images revealed dramatic changes in the size, depth, and spectral reflectance of the lakes utilized by the flamingos.

  13. Development and validation of an Argentine set of facial expressions of emotion.

    Science.gov (United States)

    Vaiman, Marcelo; Wagner, Mónica Anna; Caicedo, Estefanía; Pereno, Germán Leandro

    2017-02-01

    Pictures of facial expressions of emotion are used in a wide range of experiments. The last decade has seen an increase in the number of studies presenting local sets of emotion stimuli. However, only a few existing sets contain pictures of Latin Americans, despite the growing attention emotion research is receiving in this region. Here we present the development and validation of the Universidad Nacional de Cordoba, Expresiones de Emociones Faciales (UNCEEF), a Facial Action Coding System (FACS)-verified set of pictures of Argentineans expressing the six basic emotions, plus neutral expressions. FACS scores, recognition rates, Hu scores, and discrimination indices are reported. Evidence of convergent validity was obtained using the Pictures of Facial Affect in an Argentine sample. However, recognition accuracy was greater for UNCEEF. The importance of local sets of emotion pictures is discussed.

  14. Adjective checklist to assess the big five personality factors in the Argentine population.

    Science.gov (United States)

    Ledesma, Rubén D; Sánchez, Roberto; Díaz-Lázaro, Carlos M

    2011-01-01

    The aim of this work was to develop an adjective checklist to assess the Big Five personality factors in the Argentine population. The new instrument was administered to pilot (n= 112), validation (n= 372), and replication (n= 309) samples. The final version of the checklist included 67 adjectives encompassing its 5 dimensions. Factor analysis results were consistent with the Five-factor model. Internal consistency of scales was very good and convergent correlations with the Big Five Inventory (BFI; John, Donahue, & Kentle, 1991) were substantial. Face validity, as evaluated by 2 independent raters, was good. Preliminary evidence of validity for the checklist is presented. Finally, the Adjective Checklist for Personality Assessment and BFI are compared, taking into consideration their psychometric properties in our cultural context. Study limitations and future research are discussed.

  15. Organochlorinated pesticides in the Argentine Antarctic sector and Atlantic coastline waters.

    Science.gov (United States)

    García Fernández, J C; Casabella, A N; Marzi, A A; Astolfi, E; Roses, O; Donnewald, H; Villamil, E

    1979-01-01

    The presence of organochlorinated pesticides in water samples drawn in the Argentine Antarctic Sector and Atlantic coastline has been proved. In general, these samples showed quantities that varied between a few hundredths of a ppmm to slightly more than 1 ppmm, although in some cases and for certain pesticides, depending on the locations, the levels found were definitely higher. With the exception of Dieldrin, which appeared in only one sample/in what would seem to be its course few hundredths of a ppm, to slightly more than 1 ppmm, although in some cases and for certain pesticides found were the same as those reported in previous investigations. The isolated cases of high pesticide contents in water samples drawn at wharves and of snow in the vicinity of Almirante Brown Base show up clearly the influence of human activity on the contamination of the environment.

  16. Therapeutic Argentine tango dancing for people living with Parkinson’s disease: a feasibility study

    Directory of Open Access Journals (Sweden)

    Laura M Blandy

    2015-05-01

    Full Text Available Background: Individuals living with Parkinson’s disease (PD can experience a range of movement disorders. Therapeutic dance is enjoyable and thought to improve mobility, balance and well being in some people with PD. The primary objective of this study was to evaluate the feasibility and safety of a 4 week Argentine tango dance program for people with PD. Methods: Six community dwelling individuals with mild-moderate PD were recruited from Parkinson’s support groups, movement disorder clinics and the Parkinson’s disease Association in Australia. To minimise falls risk, participants were required to be less than 75 years of age and physically independent (Hoehn and Yahr stages I-III. They were also required to speak English. Participants attended a 1 hour dance class at a dance studio twice per week for 4 weeks. A professional dance instructor led and choreographed the classes. Physiotherapists were present to assist participants during the class and served as dance partners as necessary. The primary outcome was feasibility which was determined by measures of recruitment, adherence, attrition, safety (falls, near misses and adverse events and resource requirements. Secondary measures included the Beck Depression Inventory and the Euroqol-5D, administered at baseline and post intervention. Therapy outcomes pre and post-intervention were analysed descriptively as medians and inter-quartile ranges and using Wilcoxon matched pair signed-rank tests.Results: The Argentine tango dance intervention was shown to be safe, with no adverse events. Adherence to the dance program was 89%. Depression scores improved after intervention (p=0.04. Some challenges were associated with the need to quickly recruitment participants and supplying physiotherapists to act as dance partners. Conclusion: The program was shown to be feasible and safe for people with mild to moderately severe PD.

  17. Culture et propagande franquiste dans l’Argentine péroniste

    Directory of Open Access Journals (Sweden)

    Laurent Bonardi

    2004-09-01

    Full Text Available La fin de la Seconde Guerre Mondiale et la condamnation internationale de l’Espagne plongent le régime franquiste dans une situation très délicate. Cependant, le gouvernement argentin du général Peron devient un véritable gilet de sauvetage pour la dictature espagnole. Le régime du Caudillo profite de ce contexte pour développer une propagande très intense dans le Rio de la Plata. Pour mener à bien les différentes actions de propagande, les représentants espagnols en Argentine devront lutter contre les activités antifranquistes des exilés.La conclusión de la Segunda Guerra Mundial y la condena internacional de España sumen al régimen franquista en una muy delicada coyuntura. Sin embargo, el gobierno argentino del general Perón se convierte en un auténtico chaleco salvavidas para la dictadura española. El régimen del Caudillo aprovecha este contexto para desarrollar una intensa propaganda en el Río de la Plata. Para llevar a cabo las distintas acciones propagandísticas, los representantes españoles en Argentina tendrán que luchar contra las actividades antifranquistas de los exiliados.The end of World War II and the international condemnation of Spain put Franco’s regime in a very delicate situation. However, the Argentinian government of the general Peron appeared as a “life jacket” for the Spanish dictatorship. The government of the Caudillo used this context to develop a very intense propaganda in the Rio de la Plata. Still, to conclude their various propagandist actions, the Spanish representatives in Argentina had to fight against the activities of antifranquist people in exile.

  18. Consequences of the Argentine ant, Linepithema humile (Mayr), invasion on pollination of Euphorbia characias (L.) (Euphorbiaceae)

    Science.gov (United States)

    Blancafort, Xavier; Gómez, Crisanto

    2005-07-01

    We have studied the influence of the Argentine ant, Linepithema humile, on the pollination of Euphorbia characias, a deciduous insect-pollinated shrub. The observations were made in two adjacent areas (invaded and non-invaded by L. humile) in a Mediterranean cork-oak forest. In the invaded area, L. humile has replaced most of the native ants that climb up this plant's inflorescences. Five native ant species were detected in the non-invaded areas and only one in the invaded area. The number of visitors to infested inflorescences (1.54 ± 1.86 visitors/10 min observation) was lower than in non-infested inflorescences in the invaded area (3.74 ± 4.19 visitors/10'), and in the non-invaded areas (4.16 ± 5.00 visits/10'). For several species of flower-visiting insects, no differences were detected between the time spent in the flowers and the number of flowers visited in the two areas, except for Eristalis tenax, a dipteran which visited more flowers (15.2 ± 11.1 flowers visited/10') and spent more time (9.4 ± 5.8 sec) in the non-invaded area than in the invaded area (7.8 ± 8.2 flowers visited/10' and 5.3 ± 2.1 sec, respectively). The relative representation of insect orders in the two areas was not different. A significant reduction in fruit-set and seed-set was detected in the invaded area. These results suggest that the Argentine ant may greatly affect the reproductive success of components of the Mediterranean flora.

  19. Can the Argentine ant ( Linepithema humile Mayr) replace native ants in myrmecochory?

    Science.gov (United States)

    Gómez, Crisanto; Oliveras, Jordi

    2003-04-01

    We analyse the influence of the Argentine ant ( Linepithema humile Mayr) on the seed dispersal process of the myrmecochorous plants Euphorbia characias, E. biumbellata, Genista linifolia, G. triflora, G. monspessulana and Sarothamnus arboreus. The observations were made in two study plots of Mediterranean cork-oak secondary forest (invaded and non-invaded by L. humile). The presence of L. humile implies the displacement of all native ant species that disperse seeds. Seed transports in the non-invaded zone were carried out by eight ant species. In the invaded zone, L. humile workers removed and transported seeds to the nest. In vertebrate exclusion trials, we observed the same level of seed removal in the invaded and non-invaded zones. Two findings could explain this result. Although mean time to seed localization was higher for native ants (431.7 s) than that for L. humile (150.5 s), the mean proportion of seeds transported after being detected was higher (50.1%) in non-invaded than in invaded (16.8%) zones. The proportion of seeds removed and transported into an ant nest after an ant-seed interaction had dramatically reduced from non-invaded (41.9%) to invaded (7.4%) zones. The levels of seed dispersal by ants found prior to invasion are unlikely to be maintained in invaded zones. However, total replacement of seed dispersal function is possible if contact iteration finally offers similar levels or quantities of seeds reaching the nests. The results obtained confirm that the Argentine ant invasion may affect myrmecochory dramatically in the Mediterranean biome.

  20. Global-scale analyses of chemical ecology and population genetics in the invasive Argentine ant.

    Science.gov (United States)

    Brandt, M; Van Wilgenburg, E; Tsutsui, N D

    2009-03-01

    Ants are some of the most abundant and ecologically successful terrestrial organisms, and invasive ants rank among the most damaging invasive species. The Argentine ant is a particularly well-studied invader, in part because of the extreme social structure of introduced populations, known as unicoloniality. Unicolonial ants form geographically vast supercolonies, within which territorial behaviour and intraspecific aggression are absent. Because the extreme social structure of introduced populations arises from the widespread acceptance of conspecifics, understanding how this colonymate recognition occurs is key to explaining their success as invaders. Here, we present analyses of Argentine ant recognition cues (cuticular hydrocarbons) and population genetic characteristics from 25 sites across four continents and the Hawaiian Islands. By examining both hydrocarbon profiles and microsatellite genotypes in the same individual ants, we show that native and introduced populations differ in several respects. Both individual workers and groups of nestmates in the introduced range possess less diverse chemical profiles than ants in the native range. As previous studies have reported, we also find that introduced populations possess much lower levels of genetic diversity than populations in the native range. Interestingly, the largest supercolonies on several continents are strikingly similar to each other, suggesting that they arose from a shared introduction pathway. This high similarity suggests that these geographically far-flung ants may still recognize and accept each other as colonymates, thus representing distant nodes of a single, widely distributed supercolony. These findings shed light on the behaviour and sociality of these unicolonial invaders, and pose new questions about the history and origins of introduced populations.

  1. Marine fronts are important fishing areas for demersal species at the Argentine Sea (Southwest Atlantic Ocean)

    Science.gov (United States)

    Alemany, Daniela; Acha, Eduardo M.; Iribarne, Oscar O.

    2014-03-01

    The high primary and secondary production associated with frontal systems attract a diversity of organisms due to high prey availability; this is why a strong relationship between fronts and pelagic fisheries has been shown worldwide. In the Argentine Sea, demersal resources are the most important, both in economical and in ecological sense; so we hypothesize that fronts are also preferred fishing areas for demersal resources. We evaluated the relationship between spatial distribution of fishing effort and oceanographic fronts, analyzing three of the most important frontal systems located in the Argentine Sea: the shelf-break front, the southern Patagonia front and the mid-shelf front. Individual vessel satellite monitoring system data (VMS; grouped by fleet type: ice-trawlers, freezer-trawlers and jigging fleet) were studied and fishing events were identified. Fishing events per area were used as a proxy of fishing effort and its spatial distribution by fleet type was visualized and analyzed with Geographic Information Systems. Oceanographic fronts were defined using polygons based on satellite chlorophyll amplitude values, and the percentage of fishing events within each polygon was calculated. Results showed a positive association between fronts and fishing activities of the different fleets, which suggests the aggregation of target species in these zones. The coupling of the freezer-trawler and jigging fleets (that operate on lower trophic level species; Macruronus magellanicus and Illex argentinus respectively) with fronts was higher than the ice-trawler fleet, targeting species of higher trophic level (Merluccius hubbsi). Marine fronts represent important fishing areas, even for demersal resources, as the distribution of fishing fleets and fishing effort are positively associated with frontal zones.

  2. 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.)

  3. Mémoire d’un saccage. Argentine, le hold-up du siècle

    Directory of Open Access Journals (Sweden)

    Julien Welter

    2005-02-01

    Full Text Available Memoria del saqueo – la oscura trama de la corrupcion Documentaire argentin de Fernando SOLANAS, 2004, 120mn. Sortie de la dictature, l’Argentine ne pensait jamais connaître une nouvelle fois le cauchemar d’un désastre social. Ce pays, naguère le plus riche d’Amérique du Sud, a en effet tout tenté pour s’éloigner des régimes autoritaires conduisant à l’asservissement du peuple. Tout tenté, même l’extrême opposé, l’ultralibéralisme. En revenant sur ces années d’une politique en apparence ouver...

  4. Floral visitation by the Argentine ant reduces pollinator visitation and seed set in the coast barrel cactus, Ferocactus viridescens.

    Science.gov (United States)

    LeVan, Katherine E; Hung, Keng-Lou James; McCann, Kyle R; Ludka, John T; Holway, David A

    2014-01-01

    Mounting evidence indicates that trade-offs between plant defense and reproduction arise not only from resource allocation but also from interactions among mutualists. Indirect costs of plant defense by ants, for example, can outweigh benefits if ants deter pollinators. Plants can dissuade ants from occupying flowers, but such arrangements may break down when novel ant partners infiltrate mutualisms. Here, we examine how floral visitation by ants affects pollination services when the invasive Argentine ant (Linepithema humile) replaces a native ant species in a food-for-protection mutualism with the coast barrel cactus (Ferocactus viridescens), which, like certain other barrel cacti, produces extrafloral nectar. We compared the effects of floral visitation by the Argentine ant with those of the most prevalent native ant species (Crematogaster californica). Compared to C. californica, the Argentine ant was present in higher numbers in flowers. Cactus bees (Diadasia spp.), the key pollinators in this system, spent less time in flowers when cacti were occupied by the Argentine ant compared to when cacti were occupied by C. californica. Presumably as a consequence of decreased duration of floral visits by Diadasia, cacti occupied by L. humile set fewer seeds per fruit and produced fewer seeds overall compared to cacti occupied by C. californica. These data illustrate the importance of mutualist identity in cases where plants balance multiple mutualisms. Moreover, as habitats become increasingly infiltrated by introduced species, the loss of native mutualists and their replacement by non-native species may alter the shape of trade-offs between plant defense and reproduction.

  5. Perpetuating Social Movements amid Declining Opportunity: The Survival Strategies of Two Argentine Piquetero Groups

    Directory of Open Access Journals (Sweden)

    Edward C. Epstein

    2009-04-01

    Full Text Available This article examines the recent behaviour in Argentina of two national protest groups of socalled ‘piqueteros’ or picketers (impoverished unemployed individuals who used the blockage of strategic roads and bridges to force government concessions that emerged politically in the buildup to the crisis of 2001-2002. Using theoretical concepts developed by McAdam, Tarrow, and Tilly in understanding social movements, the author analyses what he calls the ‘survival strategy’ adopted by their leaders as the political opportunities that produced their initial growth gave way to a more hostile environment with the normalization of Argentine politics under the Kirchner administration. While the two piquetero groups studied differ considerably in terms of their politics and ideology, both ended up depending on the same traditional tactic of utilizing important government contacts to obtain the resources necessary for organizational maintenance, despite their nominal identity as radical protesters against the present political system.Resumen: Perpetuando movimientos sociales y oportunidades decrecientes: las estrategias de sobrevivencia de dos grupos de piqueteros argentinesEste artículo examina el comportamiento reciente de dos grupos nacionales de protesta argentinos llamados ‘piqueteros’ (desempleados empobrecidos que usaron el bloqueo de calles y puentes estratégicos para forzar concesiones gubernamentales que aparecieron durante la crisis de 2001- 2002. Utilizando conceptos teóricos creados por McAdam, Tarrow, y Tilly en su discusión sobre los movimientos sociales, el autor analiza lo que describe como ‘estrategias de sobrevivencia’ adoptadas por sus dirigentes cuando las oportunidades que ocasionaron su crecimiento inicial cedieron ante un ambiente más hostil en el contexto de la normalización de la política argentina durante la administración de Kirchner. Aunque los dos grupos piqueteros estudiados se diferencian mucho en t

  6. [Prevalence of hepatitis C antibodies in plasma donors for the treatment of Argentine hemorrhagic fever].

    Science.gov (United States)

    Saavedra, M C; Briggiler, A M; Enría, D; Riera, L; Ambrosio, A M

    1997-01-01

    For Argentine Hemorrhagic Fever, a disease caused by Junin virus (JV), there is an effective treatment, consisting of the transfusion of immune plasma (IP). This plasma is obtained from individuals who have had the disease. Since Hepatitis C virus (HCV) is transmitted parenterally, this study was aimed to estimate the prevalence of anti-HCV in a population of IP donors. In this study, 376 donors (47 females and 329 males) were studied: 95 individuals (24 females and 71 males) who had had FHA but had not received treatment and 88 laboratory workers (57 females and 31 males) who were included as controls. Serum samples were tested by EIA (Abbott, Germany) for HCV, and later confirmed by LIATEK (Organon, Ireland). Antibodies to HCV were detected in 29/376 donors (7.7%), in only 1/95 (1.0%) untreated convalescents of AHF and in 1/ 88 (1.1%) of laboratory workers. Retrospective analysis of the seroconversion for HCV in these individuals demonstrated that in 16/24 donors (66.6%) the infection by HCV was probably associated with the IP transfusion. The data presented herein show how the infection with HCV was disseminated among donors of IP, stressing the risk associated to transfusional practices, and emphasizing the need of vaccination to prevent AHF and also the risk inherent to its treatment.

  7. Moessbauer and magnetic studies of parent material from argentine pampas soils

    Energy Technology Data Exchange (ETDEWEB)

    Bidegain, J. C. [Laboratorio de Entrenamiento Multidisciplinario para la Investigacion Tecnologica (Argentina); Bartel, A. A. [Universidad Nacional de La Pampa, Facultad de Ciencias Exactas y Naturales (Argentina); Sives, F. R.; Mercader, R. C., E-mail: mercader@fisica.unlp.edu.ar [Universidad Nacional de La Plata, Departamento de Fisica, Facultad de Ciencias Exactas (Argentina)

    2007-02-15

    In order to establish a correlation between the different types of soils using hyperfine and magnetic parameters as climatic and environmental proxies, we have studied the differentiation of soil developed around 38.5{sup o} south latitude, in the central Pampas of Argentina, by means of Moessbauer spectroscopy and environmental magnetism. The soils transect (climosequence) investigated stretches from the drier west (around 64{sup o} W) to the more humid east (at around 59{sup o} W) in the Buenos Aires Province, covering a distance of 600 km. The soils studied developed during recent Holocene geologic times in a landscape characterized by small relict plateaus, slopes and depressions, dunes and prairies. The parent material consists of eolian sandy silts overlying calcrete layers. The low mean annual precipitation in the western parts of the region gives rise to soils without B-horizons, which limits the agricultural use of land. The preliminary results show an increase of the paramagnetic Fe{sup 3+} relative concentration from west to east in the soils investigated. Magnetite is probably mainly responsible for the observed enhancement in the susceptibility values. The magnetic response of the parent material is similar to that of the loess part of the previously investigated loess-paleosol sequences of the Argentine loess plateau.

  8. Characteristics of pica practice during pregnancy in a sample of Argentine women.

    Science.gov (United States)

    López, L B; Marigual, M; Martín, N; Mallorga, M; Villagrán, E; Zadorozne, M E; Martín De Portela, M L P; Ortega Soler, C R

    2012-02-01

    The purpose of this study was to describe the practice of pica during pregnancy in Argentine women. Maternal and fetal characteristics as well as the practice of pica were evaluated during the puerperium in a sample of 1,014 women from five different geographical areas. Pica prevalence for the total sample was 23.2% (95% CI 20.6-25.8). Pagophagia (ice consumption) was the main type of pica practice, followed by geophagia (earth intake) and the ingestion of soap, toothpaste and chalk. The onset of the practice was mainly in the first months of pregnancy. A total of 49.8% of women revealed a family history of pica; 30.6% had pica in childhood and 13.2% suffered from polypica. Women with pica during pregnancy had similar age, pre-pregnancy body mass index (BMI), parity, neonatal birth weight and gestational age compared with non-pica mothers, although maternal haemoglobin concentration was lower in women with pica than in non-pica mothers (p = 0.0001).

  9. Les intellectuels espagnols exilés dans l'Argentine peroniste

    Directory of Open Access Journals (Sweden)

    Laurent Bonardi

    2008-12-01

    Full Text Available El gobierno argentino del general Perón reveló ser un verdadero chaleco salvavidas para la dictadura española. Esta política de cooperación provoca una viva oposición en Argentina. Este trabajo propone un análisis de las reacciones de los intelectuales españoles exiliados en Argentina. Observaremos de que manera los intelectuales españoles lucharon contra la dictadura franquista durante el idilio hispano-argentino y analizaremos el “modus operandi” adoptado por el gobierno peronista para obstaculizar las actividades anti-franquistas en el exilio.__________________ABSTRACT:The Argentine government of general Perón becomes an authentic life jacket for the Spanish dictatorship. This policy of cooperation triggers ample dispproval in Argentina. We propose an analysis of the reactions of the spanish intellectuals exiled in Argentina. We will see how the Spanish intellectuals fight against the Franco dictatorship during the honeymoon Hispanic-Argentinean. Also we will analyze the modus operandi adopted by the Peronist government to prevent the antifrancoist activities of the exiliados.

  10. Les variations glaciaires dans les Andes de Mendoza (Argentine entre 1975 et 2007

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    Étienne Cossart

    2010-05-01

    Full Text Available Le suivi des glaciers constitue un enjeu essentiel pour l’organisation des sociétés et le fonctionnement des milieux montagnards. Dans la mesure où les glaciers influencent fortement le régime des cours d’eau, et donc les stratégies d’irrigation, leur disparition peut remettre en cause de nombreux usages liés à l’eau. Or, si nombre de glaciers sont étudiés individuellement, des méthodes permettant d’effectuer des suivis de l’englacement à l’échelle régionale manquent. Nous proposons donc ici une méthode, fondée sur la reconstitution de champs d’altitudes de la Ligne d’Équilibre Glaciaire, aboutissant à la réalisation de cartes diachroniques régionales. Nous synthétisons ainsi les variations glaciaires depuis 30 ans sur l’ensemble d’un secteur de plusieurs milliers de kilomètres carr��s : les Andes de Mendoza (Argentine.

  11. Activity of bifenthrin, chlorfenapyr, fipronil, and thiamethoxam against Argentine ants (Hymenoptera: Formicidae).

    Science.gov (United States)

    Wiltz, B A; Suiter, D R; Gardner, W A

    2009-12-01

    Bifenthrin, chlorfenapyr, fipronil, and thiamethoxam were evaluated for activity against the Argentine ant, Linepithema humile (Mayr) (Hymenoptera: Formicidae). Mobility impairment and lethal times were determined after topical treatments. Ants were immobilized most quickly by bifenthrin, followed by chlorfenapyr and thiamethoxam. After 2 h, the number of fipronil-treated ants unable to walk out of test arenas did not differ from control ants. Median lethal time (LT50) after topical treatment was lowest in the bifenthrin treatment, followed by thiamethoxam, chlorfenapyr, and then fipronil. Mortality due to horizontal exposure was evaluated at 10, 20, or 30 degrees C, with topically treated ant corpses serving as donors. There was low to moderate horizontal activity in bifenthrin and chlorfenapyr treatments, with no temperature effect in bifenthrin treatments and a positive temperature effect in chlorfenapyr treatments. Mortality in the fipronil treatments was highest and was positively correlated with temperature. Thiamethoxam treatments did not differ from controls at 10 degrees C, but mortality increased with temperature. To evaluate contact activity, either all of 20% of the ants in a cohort were exposed to insecticide-treated pine needles. In both tests, mortality was highest in fipronil and bifenthrin treatments, followed by thiamethoxam, with lowest mortality in chlorfenapyr treatments. Effectiveness as a barrier was evaluated by providing a choice between bridges treated with insecticide or water. Although bifenthrin did not provide an impenetrable barrier, it was the only treatment having fewer ants than its paired control. Mortality data suggest that lack of recruitment rather than repellency account for this result.

  12. Impact of CPS1 Gene rs7422339 Polymorphism in Argentine Patients With Hyperhomocysteinemia

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    Silene M. Silvera-Ruiz BSc

    2015-05-01

    Full Text Available Carbamoyl phosphate synthetase 1 (CPS1 is a key gene in the first step of urea cycle and has been correlated with nitric oxide level and vascular smooth muscle activity. A functional single-nucleotide polymorphism C/A at position 4217 in CPS1 (National Center for Biotechnology Information SNP database no. rs7422339, T1405N was reported to be associated with high homocysteine (Hcy plasma values. Although genetic variants of methylenetetrahydrofolate reductase (MTHFR gene are known to influence Hcy concentration, other genetic determinants of Hcy remain largely unknown. The association between the CPS1 rs7422339 and the risk of hyperhomocysteinemia in Latin American populations is unknown. Here, we study this association in 100 patients having hyperhomocysteinemia without MTHFR c.677C>T polymorphism and 100 controls. CPS1 rs7422339 was studied using polymerase chain reaction and enzymatic restriction. Comparisons of the CPS1 rs7422339 genotype distributions revealed a significant difference between groups (P = 2.3 × 10−3. Patients carrying polymorphic allele showed almost 3 times higher risk (odds ratio [OR] = 2.47 of hyperhomocysteinemia than wild-type allele, suggesting that rs7422339 SNP is associated with high Hcy levels in the Argentine population.

  13. Urban Infestation Patterns of Argentine Ants, Linepithema humile, in Los Angeles

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    Smadar Gilboa

    2012-01-01

    Full Text Available Infestations of buildings by Argentine ants, Linepithema humile (Mayr, were monitored on the campus of the University of California, Los Angeles. Foraging ant activity peaked during the hotter months of the year. The mean monthly maximum temperature, but not rainfall, positively correlated with indoor infestation frequency. Neither garden size nor the predominant groundcover vegetation correlated with the number of foraging ants at baits within gardens. Although the number of foraging ants outside a building varied over 40-fold, ant density in gardens did not predict the likelihood of infestation within the building. Also, the type of vegetative groundcover employed did not predict infestation frequency. There was, however, a significant negative relationship between the size of the garden outside of a building and the number of infestations. Given the large foraging area of L. humile workers, buildings next to small gardens may be infested simply because they lie within the “normal” foraging area of a colony. The best predictor of which rooms were infested within buildings was the presence of a water source. Thus providing water for ant colonies outside and away from buildings may be one method of integrated pest management to reduce the proclivity of ants to infest structures.

  14. Lithologic identification and characterization using ETM+ (Landsat 7. Study case of the Upsala glacier basin, Argentine

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    A. Lo Vecchio

    2016-06-01

    Full Text Available The object of this study aims to evaluate and analyze digital image processing techniques applied to the Enhanced Thematic Mapper Plus (ETM+, in order to demark and characterize the outcropping lithologies on the Upsala Glacier basin, Santa Cruz, Argentine Republic. The prolific technological and spatial development experienced in the last decades has given place to the generation, without precedents, of multiple remote sensors capable of capturing information of the terrestrial surface and also the improvement of digital image processing techniques and software; amongst them, the amazing possibilities in the detection and differentiation of diverse covers present on the terrestrial surface can be highlighted, such as glaciers, volcanoes, vegetation, soils, water, types of rock outcrops, etc. This situation improves mapping and monitoring of natural phenomenon in the Earth Sciences field. The proposed methodology includes radiometric corrections, elimination of unwanted covers, statistical evaluation in the combination of the most appropriate bands, application of the Z index, discretization of the statistical series, entailing tasks of spectral classification with field samples and a later validation. Valuable results were obtained by means of digital processing of images, that were validated yielding a 82% of accuracy in the proposed classification, which are good results taking into account the diversity of covers present and the lithological heterogeneity that makes up each pixel (30m. These results were also validated with existing geological maps, obtaining a good agreement.

  15. Inhibition of cyclooxygenase activity by standardized hydroalcoholic extracts of four Asteraceae species from the Argentine Puna

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    M.R. Alberto

    2009-09-01

    Full Text Available We determined the anti-inflammatory activity of standardized extracts of four medicinal plant species (Baccharis incarum, B. boliviensis, Chuquiraga atacamensis, Parastrephia lucida that grow in the Argentine Puna (3800 m above sea level and that are used to reduce oxidative stress and alleviate gout and arthritic pain. The extracts of plant aerial parts were standardized in terms of total phenolic compounds and flavone/flavanone content and free radical scavenging activity. All extracts showed high phenolic compound concentration (0.5-1.6 mg/mL, mainly flavones and flavonols (0.1-0.8 mg/mL. The extracts showed hydrogen donating ability (DPPH and ABTS and reactive oxygen species scavenging activity (O2●-, OH-, H2O2. The ability of the extracts to inhibit cyclooxygenase enzymes (COX-1 and COX-2 was determined by calculating percent inhibition of PGE2 production measured by enzyme immunoassay. All extracts inhibited both enzymes with IC50 values of 2.0 to 16.7 µg/mL. The anti-inflammatory activity of B. incarum and C. atacamensis extracts was higher than that of B. boliviensis and P. lucida. The IC50 values obtained for indomethacin were 0.11 and 0.78 µM for COX-1 and COX-2, respectively. The present results are consistent with the anecdotal use of these species in phytotherapic preparations.

  16. Inhibition of cyclooxygenase activity by standardized hydroalcoholic extracts of four Asteraceae species from the Argentine Puna.

    Science.gov (United States)

    Alberto, M R; Zampini, I C; Isla, M I

    2009-09-01

    We determined the anti-inflammatory activity of standardized extracts of four medicinal plant species (Baccharis incarum, B. boliviensis, Chuquiraga atacamensis, Parastrephia lucida) that grow in the Argentine Puna (3800 m above sea level) and that are used to reduce oxidative stress and alleviate gout and arthritic pain. The extracts of plant aerial parts were standardized in terms of total phenolic compounds and flavone/flavanone content and free radical scavenging activity. All extracts showed high phenolic compound concentration (0.5-1.6 mg/mL), mainly flavones and flavonols (0.1-0.8 mg/mL). The extracts showed hydrogen donating ability (DPPH and ABTS) and reactive oxygen species scavenging activity (O2-, OH-, H2O2). The ability of the extracts to inhibit cyclooxygenase enzymes (COX-1 and COX-2) was determined by calculating percent inhibition of PGE2 production measured by enzyme immunoassay. All extracts inhibited both enzymes with IC50 values of 2.0 to 16.7 microg/mL. The anti-inflammatory activity of B. incarum and C. atacamensis extracts was higher than that of B. boliviensis and P. lucida. The IC50 values obtained for indomethacin were 0.11 and 0.78 microM for COX-1 and COX-2, respectively. The present results are consistent with the anecdotal use of these species in phytotherapic preparations.

  17. Chromosomal variation in Argentine populations of Akodon montensis Thomas, 1913 (Rodentia, Cricetidae, Sigmodontinae).

    Science.gov (United States)

    Malleret, Matías Maximiliano; Labaroni, Carolina Alicia; García, Gabriela Verónica; Ferro, Juan Martín; Martí, Dardo Andrea; Lanzone, Cecilia

    2016-01-01

    The genus Akodon Meyen, 1833 is one of the most species-rich among sigmodontine rodents and has great chromosome variability. Akodon montensis has a relatively broad distribution in South America, and Argentine populations are located in the southernmost region of its range. Brazilian populations have important chromosomal variability, but cytogenetic data from Argentina are scarce. We performed a chromosome characterization of natural populations of Akodon montensis using conventional staining, C-banding, Ag-NORs and base-specific fluorochromes. A total of 31 specimens from five localities of Misiones Province, in Argentina, were analyzed. The 2n=24 chromosomes was the most frequently observed karyotype. However, five individuals presented 25 chromosomes due to a supernumerary B-chromosome; and one individual had 2n=26 due to one B plus a trisomy for chromosome 11. Additionally, two XY females and two variants of the X chromosomes were found. C-positive centromeric bands occurred in all chromosomes; additional C-bands were observed in some autosomes, the X, Y and B chromosomes. Ag-NORs were observed in five autosomes, and the B chromosome was frequently marked. Fluorochrome banding was similar among karyotypes of the analyzed populations. Comparisons of cytogenetic data among populations of Argentina and Brazil showed the presence of high intraspecific variability in Akodon montensis and some differences among regions.

  18. Myxozoans as biological tags for stock identification of the Argentine hake, Merluccius hubbsi (Gadiformes: Merlucciidae).

    Science.gov (United States)

    Cantatore, D M P; Irigoitia, M M; Holzer, A S; Timi, J T

    2016-05-01

    Myxozoans have been successfully used as tags for fish stock identification around the world. However, few studies using myxozoan tags have been carried out in the Southern Atlantic, a region with complex oceanography that constitutes a potentially suitable scenario for testing the utility of myxozoans as indicators. Its usefulness was tested using six samples of Merluccius hubbsi in two different regions of the Argentine Sea. Generalized linear models were performed to assess the effects of fish size and sex, and year and region of capture and selected using the Information Theoretic approach. Three myxozoan species were recorded: Kudoa rosenbuschi, Myxoproteus meridionalis and Fabespora sp. Results of modelling species individually showed differential capabilities for detecting geographical population structure at different spatial scales, with K. rosenbuschi and Fabespora sp. allowing the discrimination of northern and southern stocks, but Fabespora sp. also as a promissory indicator of intrapopulation sub-structure due to different migratory routes during non-reproductive periods. This work confirms that myxozoans offer a set of suitable markers at different spatial scales, which can be selected individually or in any combination, depending on the geographical extent of the study, constituting tools adaptable to the objectives of further research on fish population structure.

  19. Screening of FSH receptor gene in Argentine women with premature ovarian failure (POF).

    Science.gov (United States)

    Sundblad, Victoria; Chiauzzi, Violeta A; Escobar, Maria Eugenia; Dain, Liliana; Charreau, Eduardo H

    2004-07-30

    Diverse mutations in FSH-receptor (FSHR) gene have been described as possible cause of premature ovarian failure (POF). To investigate the presence of mutations and/or polymorphisms in FSHR gene, DNA from 20 POF, 5 of which were diagnosed as resistant ovary syndrome (ROS), and from 44 controls was isolated from peripheral lymphocytes. The complete coding sequence was analysed by PCR followed by SSCP, direct sequencing or restriction enzyme analysis. No mutations in FSHR gene were identified in the patients studied. The two already described polymorphisms in exon 10, A919G and A2039G, cosegregated in all the homozygous individuals, indicating that FSHR presents two isoforms: Ala307-Ser680 and Thr307-Asn680. OR results suggest that the 919G-2039G allelic variant or the homozygous genotype is not associated to disease risk. In addition, a heterozygous substitution T1022C (Val341Ala) was found in two control subjects. We suggest that mutations in FSHR gene are rare in women with POF in Argentine. Presence of a particular FSHR isoform does not appear to be associated with this disease.

  20. Magnetic and Moessbauer Studies of Quaternary Argentine Loessic Soils and Paleosols

    Energy Technology Data Exchange (ETDEWEB)

    Mercader, R. C., E-mail: mercader@fisica.unlp.edu.ar; Sives, F. R. [Universidad Nacional de La Plata, Departamento de Fisica, IFLP, Facultad de Ciencias Exactas (Argentina); Imbellone, P. A. [Universidad Nacional de La Plata, Instituto de Geomorfologia y Suelos (Argentina); Vandenberghe, R. E. [Ghent University, NUMAT, Department of Subatomic and Radiation Physics (Belgium)

    2005-02-15

    This paper is a review of the current status about the remaining problems that are found in the investigation of the Quaternary Argentine soils and loessic sediments, and the way that Moessbauer studies can assist in solving them. There are two main types of investigations that make use of the magnetic response of the samples to correlate them with information gathered by other methods. On the one hand, there is the stratigraphic and chronological research, which is of importance from the geological and paleontological points of view. On the other hand, the paleoclimatic records, of significance toward a possible model of the past climate, are also studied because of their close relation to the sediments history. However, there is not yet a model that can tell the difference between the modifications due to the climatic conditions at the time when the soils were buried from processes that occurred after burial. Some examples are given that show that Moessbauer studies can be applied with a certain degree of success when cross-checked with magnetic measurements toward understanding the processes that occurred in alluvial B (paleosols) and C horizons (loess) from the eastern part of Buenos Aires Province. Although the application of Moessbauer studies to hydromorphic processes in soils is not straightforward, there are cases in which Moessbauer spectroscopy, if applied properly and correlated with other techniques, is able to characterize the type of iron oxides existing in the materials and thus assist theories about its origin and history.

  1. Tulio Halperin Donghi, Révolution et guerre. Formation d’une élite dirigeante dans l’Argentine Créole

    OpenAIRE

    2014-01-01

    Difficile de mesurer l’événement que constitue la récente traduction de Revolución y guerra de l’historien Argentin Tulio Halperin Donghi pour les sciences humaines francophones. Plus de quarante ans après sa publication initiale aux éditions Siglo XXI et de la parution française de son Histoire Contemporaine de l’Amérique latine, la sortie de l’un des plus grands classiques de l’historiographie argentine est en effet une entreprise éditoriale qu’il faut grandement saluer. Nous tenterons de l...

  2. TDT in Argentine and Chile: dynamics of power in the process of adoption of the technological standard ISDB-TB

    Directory of Open Access Journals (Sweden)

    Carla RODRÍGUEZ MIRANDA

    2012-02-01

    Full Text Available The article analyses the media policymaking process about the adoption of the technological standard for the digital terrestrial television in Argentine and Chile. The explorative and descriptive study inquires about the tensions, articulations and dynamics of the national and supranational parties (State, broadcasters, lobbies of technical standards and civil society that played in the politic process from the late 90s when the issue of digital television inserted into public agenda until August/September on 2009 when both countries adopted the Japanese- Brazilian technology system.

  3. 15 June 2009 - President of the Argentine Nation C. Fernández visiting ATLAS experimental area.

    CERN Multimedia

    Maximilien Brice

    2009-01-01

    Tirage 1:President of the Argentine Nation, C. Fernández and Minister of Science, Technology and Innovative Production,L. Barañao Tirage 2-8:Arrival greetings Tirage 9-12:Introduction to CERN's activities by Director-General, R. Heuer Tirage 13-15:Signature of the guest book Tirage 16-25:M. Benedetti,R. Heuer and L.Barañao sit for the signature of the Agreement Tirage 26-33: Meeting with Argentinian scientists at CERN

  4. Figurations of Islandness in Argentine Culture and Literature: Macedonio Fernández, Leopoldo Marechal, and César Aira

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    Norman Cheadle

    2009-11-01

    Full Text Available This article explores islandness in the River Plate imaginary. Two modern foundational “island texts” – Thomas More’s Utopia and Daniel Defoe’s Robinson Crusoe – have exerted a formative influence on the Spanish-American colonial imagination, an influence inflected by the particular historical experience of the River Plate region and its dominant city, Buenos Aires. The figuration of islandness is examined in three twentieth-century Argentine novels by Macedonio Fernández, Leopoldo Marechal, and César Aira. The article finds both continuity and evolution in the images of islandness in these novels.

  5. The Argentine Impact Record: Implications for Episodes of Increased Flux during the Last 10 Myr

    Science.gov (United States)

    Harris, R. S.; Schultz, P. H.

    2009-12-01

    Schultz et al. [1-6] have identified 8 impact melt breccia deposits in late Cenozoic strata of the Argentine Pampas. 40Ar/39Ar and fission track dating, combined with sequence and biostratigraphic controls, demonstrate that they represent separate events between 9.24 Ma and 6 ka. These ejecta contain shocked minerals and excavated basement clasts indicative of crater-forming events rather than air blasts. If each involved iron bolides ≤ 50 m across, 8 impacts over ~1.1 x 106 km2 in 10 Myr does not represent an anomaly. However, the melt volumes and distributions observed suggest at least half of the collisions were much larger. One event close to the Miocene-Pliocene boundary (5.28 Ma) appears to have spread microtektites as far as the South Tasman Rise. And three deposits contain meteoritic debris linked to stony and stony-iron asteroids (including HED and angrite-like material) [6,7]. Consequently, one or more increases in the impact flux since the mid-Miocene may be required to account for the Argentine record [8]. Farley et al. [9,10] propose that the disruption of a large main-belt asteroid 8.3 Ma increased the IDP flux in the inner solar system leading to a positive 3He anomaly in late Miocene (~6.8-8.3 Ma) sediments. The anomaly is comparable to the late Eocene (~34.2-36.4 Ma) 3He enhancement attributed to a comet [11] or asteroid [12] shower, which increased both the abundance of IDPs and large asteroids reaching the surface. But Farley et al. discount such a scenario in the late Miocene based on a perceived absence of coincident crater-forming impacts. Preserved ejecta and geochemical signatures, however, indicate the contrary. We suggest that the late Miocene contains at least as rich a record of terrestrial impacts as the late Eocene. The patterns of elevated 3He, main-belt breakups, and significant impact events are very similar through both intervals. Two reported asteroid breakups during the Pliocene and mid-Pleistocene [13,14] also appear to

  6. Practical Pest Management Strategies to Reduce Pesticide Runoff for Argentine Ant (Hymenoptera: Formicidae) Control.

    Science.gov (United States)

    Greenberg, Les; Rust, Michael K; Richards, Jaben; Wu, Xiaoqin; Kabashima, John; Wilen, Cheryl; Gan, Jay; Choe, Dong-Hwan

    2014-12-01

    The purpose of this study was to involve pest management professionals in the design of application techniques and strategies that would be efficacious and also reduce insecticide runoff. Our study involved measuring both the efficacy of treatments for the Argentine ant, Linepithema humile (Mayr), and the concurrent runoff of fipronil and pyrethroids. Two collaborating companies used low-impact protocols for controlling ants while minimizing runoff. Protocol 1 involved bimonthly treatments, while Protocol 2 was monthly. Both protocols involved an initial treatment with a fipronil spray around the foundation. At the garage door-driveway interface, the fipronil application was done as a pin stream for Protocol 1, and as a crack and crevice application in the expansion joint near the garage for Protocol 2. Protocol 1 replaced most pyrethroid sprays with bifenthrin granules placed around bushes and away from the driveway. For the next treatment on day 63, Protocol 1 also included cyfluthrin spray treatments around the house foundation and crack and crevice applications around the edge of the driveway. For the first treatment in Protocol 2, the fipronil spray was supplemented with spot treatments of cyfluthrin. For subsequent Protocol 2 treatments, botanical insecticides were applied. For weeks 1 and 2 posttreatment combined, Protocol 1 had significantly higher reductions in ant numbers compared with Protocol 2. Thereafter there were no significant differences between the protocols. Runoff of bifenthrin from the granules used with Protocol 1 was much lower than in previous trials involving bifenthrin sprays. Day 1 fipronil runoff for Protocol 2 was significantly lower than that for Protocol 1. This difference may be because of the crack and crevice application applied in Protocol 2. Cyfluthrin runoff was minimal for Protocol 2, which involved spot treatments to supplement the fipronil on day 1, or the botanical insecticides for subsequent treatments. Protocol 1 had a

  7. Suspending the next turn as a form of repair initiation: evidence from Argentine Sign Language

    Directory of Open Access Journals (Sweden)

    Elizabeth eManrique

    2015-09-01

    Full Text Available Practices of other-initiated repair deal with problems of hearing or understanding what another person has said in the fast-moving turn-by-turn flow of conversation. As such, other-initiated repair plays a fundamental role in the maintenance of intersubjectivity in social interaction. This study finds and analyses a special type of other-initiated repair that is used in turn-by-turn conversation in a sign language: Argentine Sign Language (Lengua de Señas Argentina or LSA. We describe a type of response termed a ‘freeze-look’, which occurs when a person has just been asked a direct question: instead of answering the question in the next turn position, the person holds still while looking directly at the questioner. In these cases it is clear that the person is aware of having just been addressed and is not otherwise accounting for their delay in responding (e.g., by displaying a ‘thinking’ face or hesitation, etc.. We find that this behavior functions as a way for an addressee to initiate repair by the person who asked the question. The ‘freeze-look’ results in the questioner ‘re-doing’ their action of asking a question, for example by repeating or rephrasing it. Thus we argue that the ‘freeze-look’ is a practice for other-initiation of repair. In addition, we argue that it is an ‘off-record’ practice, thus contrasting with known on-record practices such as saying ‘Huh?’ or equivalents. The findings aim to contribute to research on human understanding in everyday turn-by-turn conversation by looking at an understudied sign language, with possible implications for our understanding of visual bodily communication in spoken languages as well.

  8. Suspending the next turn as a form of repair initiation: evidence from Argentine Sign Language.

    Science.gov (United States)

    Manrique, Elizabeth; Enfield, N J

    2015-01-01

    Practices of other-initiated repair deal with problems of hearing or understanding what another person has said in the fast-moving turn-by-turn flow of conversation. As such, other-initiated repair plays a fundamental role in the maintenance of intersubjectivity in social interaction. This study finds and analyses a special type of other-initiated repair that is used in turn-by-turn conversation in a sign language: Argentine Sign Language (Lengua de Señas Argentina or LSA). We describe a type of response termed a "freeze-look," which occurs when a person has just been asked a direct question: instead of answering the question in the next turn position, the person holds still while looking directly at the questioner. In these cases it is clear that the person is aware of having just been addressed and is not otherwise accounting for their delay in responding (e.g., by displaying a "thinking" face or hesitation, etc.). We find that this behavior functions as a way for an addressee to initiate repair by the person who asked the question. The "freeze-look" results in the questioner "re-doing" their action of asking a question, for example by repeating or rephrasing it. Thus, we argue that the "freeze-look" is a practice for other-initiation of repair. In addition, we argue that it is an "off-record" practice, thus contrasting with known on-record practices such as saying "Huh?" or equivalents. The findings aim to contribute to research on human understanding in everyday turn-by-turn conversation by looking at an understudied sign language, with possible implications for our understanding of visual bodily communication in spoken languages as well.

  9. Validation of the Argentine version of the Memory Binding Test (MBT for Early Detection of Mild Cognitive Impairment

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    Fabian Roman

    Full Text Available ABSTRACT Background: "Forgetfulness" is frequent in normal aging and characteristic of the early stages of dementia syndromes. The episodic memory test is central for detecting amnestic mild cognitive impairment (MCI. The Memory Binding Test (MBT is a simple, easy and brief memory test to detect the early stage of episodic memory impairment. Objective: To validate the Argentine version of the MBT in a Latin American population and to estimate the diagnostic accuracy as a tool for early detection of MCI. Methods: 88 subjects (46 healthy controls and 42 patients with amnestic MCI matched for age and educational level were evaluated by an extensive neuropsychological battery and the memory binding test. Results: A significantly better performance was detected in the control group; all MBT scales were predictive of MCI diagnosis (p<.01. The MBT showed high sensitivity (69% and high specificity (88%, with a PPV of 93% and a NPV of 55% for associative paired recall. A statistically significant difference (c2=14,164, p<.001 was obtained when comparing the area under the curve (AUC of the MBT (0.88 and the MMSE (0.70. Conclusion: The Argentine version of the MBT correlated significantly with the MMSE and the memory battery and is a useful tool in the detection of MCI. The operating characteristics of the MBT are well suited, surpassing other tests commonly used for detecting MCI.

  10. Hydroacoustical evidence of the expansion of pelagic swarms of Munida gregaria (Decapoda, Munididae) in the Beagle Channel and the Argentine Patagonian Shelf, and its relationship with habitat features

    Science.gov (United States)

    Diez, Mariano J.; Cabreira, Ariel G.; Madirolas, Adrián; Lovrich, Gustavo A.

    2016-08-01

    Squat lobsters are highly diversified and widespread decapods, of which only three species form pelagic swarms. Here we infer the expansion of Munida gregaria populations in the Beagle Channel and the Argentine Patagonian Shelf by means of acoustic surveys of pelagic swarms. We also describe the habitat characteristics in which these swarms occur. Acoustic data was collected during three multidisciplinary scientific cruises on board of the R/V Puerto Deseado during 2009, 2012 and 2014. Despite differences in the environmental conditions between the two surveyed areas, between 2009 and 2014 pelagic swarms increased their occurrence and abundance both in the Beagle Channel and on the Argentine Patagonian Shelf. Towards the end of the studied period, pelagic swarms of M. gregaria occurred in new locations, supporting the notion of a population expansion. Within the Beagle Channel swarm expansions were more marked than on the Patagonian Shelf. We here postulate that M. gregaria expansions occur in association with productive areas of the Argentine continental shelf, such as frontal zones, favoured by the squat lobster phenotypic plasticity that permit to exploit resources in both the neritic and benthic environments. At a regional scale on the Patagonian Shelf, three main groups of pelagic swarms of M. gregaria were clearly associated to respective frontal zones. The information presented here is necessary to understand fluctuations in both distribution and abundance patterns of a key species on the Argentine continental shelf. These fluctuations could be direct or indirect indicators of changes in the ecosystem.

  11. Large-Scale Agricultural Management and Soil Meso- and Macrofauna Conservation in the Argentine Pampas

    Directory of Open Access Journals (Sweden)

    José Camilo Bedano

    2016-07-01

    Full Text Available Soil is the most basic resource for sustainable agricultural production; it promotes water quality, is a key component of the biogeochemical cycles and hosts a huge diversity of organisms. However, we are not paying enough attention to soil degradation produced by land use. Modern agriculture has been successful in increasing yields but has also caused extensive environmental damage, particularly soil degradation. In the Argentine Pampas, agriculturization reached a peak with the generalized use of the no-till technological package: genetically modified soybeans tolerant to glyphosate, no-till, glyphosate, and inorganic fertilizers. This phenomenon has been widely spread in the country; the no-till package has been applied in large areas and has been used by tenants in a 60%–70% of cultivated lands. Thus, those who were involved in developing management practices may not be the same as those who will face degradation issues related to those practices. Indeed, most evidence reviewed in this paper suggests that the most widely distributed practices in the Pampas region are actually producing severe soil degradation. Biological degradation is particularly important because soil biota is involved in numerous soil processes on which soil functioning relies, affecting soil fertility and productivity. For example, soil meso- and macrofauna are especially important in nutrient cycling and in soil structure formation and maintenance, and they are key components of the network that links microbial process to the scale of fields and landscapes where ecosystem services are produced. However, the knowledge of the impact of different agricultural managements on soil meso- and macrofauna in Pampas agroecosystems is far from conclusive at this stage. The reason for this lack of definite conclusions is that this area has been given less attention than in other parts of the world; the response of soil fauna to agricultural practices is complex and taxa

  12. The Pacific-Atlantic connection: Biogeochemical signals in the southern end of the Argentine shelf

    Science.gov (United States)

    Garzón, J. E. Cardona; Martínez, A. M.; Barrera, F.; Pfaff, F.; Koch, B. P.; Freije, R. H.; Gómez, E. A.; Lara, R. J.

    2016-11-01

    The Cape Horn Current transports low-salinity waters from the SE Pacific Ocean into the Atlantic, which are transported further north by the Malvinas current. Biogeochemical signals of this connection were studied by characterization of dissolved organic matter (DOM) by determination of dissolved organic carbon (DOC), fluorescent dissolved organic matter (FDOMc), and DOM humification index (HIX). Further, inorganic nutrients, salinity, temperature, stable isotopic composition of particulate organic nitrogen (δ15N) and chlorophyll a (Chla) were measured in the southern end of the Argentine shelf in March 2012. Three water types were characterized: waters of the Beagle Channel (BCW), coastal waters (CW) and oceanic waters (OW). Highest values of ammonium, DOC, FDOMc and HIX were found in BCW, the lowest in OW, suggesting that terrigenous input is a main source of ammonium and refractory carbon, which is supported by a highly significant inverse correlation of these parameters with salinity. In turn, lowest concentrations of nitrate, silicate and phosphate were found in BCW and CW, and highest in OW, with highly significant correlations of these nutrients with salinity, indicating the contribution of the saltier, nutrient-rich Antarctic Circumpolar Current (ACC) to the Pacific-Atlantic connection system. In general there was an inverse distribution pattern between Chla and those nutrients contributed by the ACC, which is consistent with the transition from coastal waters to the low-silicate, high-nitrate, low-chlorophyll, iron-limited setting of the Subantarctic oceanic waters north of the Polar Front. In contrast, in the low-salinity, internal BCW, high values of ammonium, DOC, HIX and FDOM indicate continental inputs, likely including iron complexes, which could have led to the observed high Chla values. δ15N values were positive in the study region, and same as ammonium, reached a maximum in the inner part of the BCW, declining towards OW. This does not support a

  13. The hegemonic construction of technical institutions in the Argentine agriculture: analysis of AAPRESID and AACREA speeches in the last decade

    Directory of Open Access Journals (Sweden)

    María Dolores Liaudat Landivar

    2015-08-01

    Full Text Available This paper seeks to research on a type of organizations that gains relevance in recent decades in the Argentine agricultural world: the "technical organizations". We intend to trace the ideological nature and the aim of hegemonic construction of the two most representative associations: AAPRESID and AACREA. To advance in this way of research we have worked on the analysis of their discourses, using as sources documents the institutional journals, publications and videos, and minutes of the annual conferences. From this analysis we trace three elements: the roots of local and transnational discourses that they promote, the ways to articulate them and the hegemonic construction operations. These elements allow us to show the strategy of AAPRESID and AACREA to become an intellectual and moral authority in our country.

  14. Italian and Argentine olive oils: a NMR and gas chromatographic study

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    Segre, Annalaura

    2001-12-01

    Full Text Available High-field Nuclear Magnetic Resonance (NMR spectroscopy and Gas Chromatography (GC were used to analyze 16 monovarietal olive oils obtained from few matched Mediterranean cultivars grown in experimental fields located in Italy and in the Catamarca region of Argentina. The Catamarca region is characterized by extreme pedoclimatic conditions and by a wild spontaneous vegetation. The proposed sampling allows to study the effect of different pedoclimatic conditions on olive oil composition. GC gives the fatty acid profile of olive oil samples. 1H and 13C NMR techniques provide different information: the 1H NMR spectrum allows the measurement of minor components of olive oils such as b-sytosterol, hexanal, trans-2-hexenal, formaldehyde, squalene, cycloartenol and linolenic acid; the 1C NMR spectrum allows to obtain information about glycerol tri-esters of olive oils, i.e., about their acyl composition and positional distribution on glycerol moiety. All the NMR and GC results have been submitted to Linear Discriminant Analysis (LDA and Tree Cluster Analysis (TCA. A careful analysis of the statistical results allows to select the Mediterranean cultivars less affected by the climatic conditions present in the Catamarca region. The selected cultivars produce olive oils which keep their Mediterranean characteristics and which can be proposed as colonizing plants in this wild Argentine region.La espectroscopía de Resonancia Magnética Nuclear de alta resolución (RMN y Cromatografía Gaseosa (CG fueron utilizadas para analizar 16 monovariedades de aceites de oliva, obtenidas de algunos olivares Mediterráneos cultivados contemporáneamente en campos experimentales localizados en Italia y en la región de Catamarca en Argentina. Estas muestras permiten estudiar diferentes condiciones pedoclimáticas en la composición de los aceite de oliva. La CG proporciona el perfil en ácidos grasos de los aceites de oliva y las técnicas RMN 1H y RMN 13C suministran

  15. En torno a la desilusión argentina On Argentine disillusionment

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    Andrés Kozel

    2007-12-01

    its emergence with general social and economic processes?; How can we extract the incidents of this idea?; How can we characterize and classify its main expressions?; How can we think about the global meaning of this ideological and political process? The general exposition of the research is focused on showing that the topic of the failure acquired its decisive attributes during the first half of the 20th century, through a complex dynamic, comprised of diverse channels which should be captured in their specificity, although without losing sight of the more general movement of which they form a part: seen globally, this movement contributed to the erosion of an entire ideological-cultural configuration, which I call "argentine illusion". The backdrop of the process was none other than the growing social complexity, the greater and more dissonant discursive diversification (Tulio Halperín and the profound hegemony crisis which the country experienced throughout the period.

  16. Structure, composition and metagenomic profile of soil microbiomes associated to agricultural land use and tillage systems in Argentine Pampas.

    Science.gov (United States)

    Carbonetto, Belén; Rascovan, Nicolás; Álvarez, Roberto; Mentaberry, Alejandro; Vázquez, Martin P

    2014-01-01

    Agriculture is facing a major challenge nowadays: to increase crop production for food and energy while preserving ecosystem functioning and soil quality. Argentine Pampas is one of the main world producers of crops and one of the main adopters of conservation agriculture. Changes in soil chemical and physical properties of Pampas soils due to different tillage systems have been deeply studied. Still, not much evidence has been reported on the effects of agricultural practices on Pampas soil microbiomes. The aim of our study was to investigate the effects of agricultural land use on community structure, composition and metabolic profiles on soil microbiomes of Argentine Pampas. We also compared the effects associated to conventional practices with the effects of no-tillage systems. Our results confirmed the impact on microbiome structure and composition due to agricultural practices. The phyla Verrucomicrobia, Plactomycetes, Actinobacteria, and Chloroflexi were more abundant in non cultivated soils while Gemmatimonadetes, Nitrospirae and WS3 were more abundant in cultivated soils. Effects on metabolic metagenomic profiles were also observed. The relative abundance of genes assigned to transcription, protein modification, nucleotide transport and metabolism, wall and membrane biogenesis and intracellular trafficking and secretion were higher in cultivated fertilized soils than in non cultivated soils. We also observed significant differences in microbiome structure and taxonomic composition between soils under conventional and no-tillage systems. Overall, our results suggest that agronomical land use and the type of tillage system have induced microbiomes to shift their life-history strategies. Microbiomes of cultivated fertilized soils (i.e. higher nutrient amendment) presented tendencies to copiotrophy while microbiomes of non cultivated homogenous soils appeared to have a more oligotrophic life-style. Additionally, we propose that conventional tillage systems may

  17. The Argentine electric market indicative planning. The transport systems reference guides; Planificacion indicativa del mercado electrico argentino. Las guias de referencia de los sistemas de transporte

    Energy Technology Data Exchange (ETDEWEB)

    Nizovoy, Jorge Alberto; Puleri, Cesar Anibal [Transener S.A., Buenos Aires (Argentina)]. E-mail: Jorge.Nizovoy@transx.com.ar

    2001-07-01

    This work describes the foreseen tool in the Argentine electric market to guide the users regarding transport systems probable evolution, whereas they have to make inversion decisions in order to enlarge the power transportation networks. The Transportation System Reference Guides constitute such tools. Besides referring to its contents and experiences that have guided to improvements on its edition process, the work approaches aspects of the Argentine electric system development, which illustrate the challenger context on which they have been accomplishing and the obtained knowledge from comparison between what has been really accomplished and what has been proposed by the guides. For this, it is used the Transener S.A. company private experience by means of real examples from its seven published Reference Guides.

  18. Všeobecné volby v Argentině 2015: analýza průběhu a dopadů

    OpenAIRE

    2015-01-01

    This bachelor thesis deals with the general (presidential and parliamentary) election in Argentina in 2015. Its aim is to analyse the progress and the impacts of the election. In the first chapter the thesis deals with the issue of presidential government in theory. It describes the various issues and questions which may arise from the presidential system of government. In the second chapter the thesis describes the Argentine political system from its historical beginnings, through constituti...

  19. Comparative leaf anatomy in argentine Galactia species Anatomía comparada de hoja en especies argentinas de Galactia

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    G. M. Tourn

    2009-07-01

    Full Text Available A comparative study of anatomical characters of the leaves of argentine species of Genera Galactia was carried out in order to evaluate their potential value in Taxonomy. In Argentine 14 species and some varieties from Sections Odonia and Collaearia can be found. Section Odonia: G. benthamiana Mich., G. dubia DC., G. fiebrigiana Burkart var. correntina Burkart, G. glaucophylla Harms, G. gracillima Benth., G. latisiliqua Desv., G. longifolia (Jacq. Benth., G. marginalis Benth., G. striata (Jacq. Urban, G. martioides Burkart, G. neesi D. C. var. australis Malme, G. pretiosa Burkart var. pretiosa, G. texana (Scheele A. Gray and G. boavista (Vell. Burkart from Section Collaearia. The characterization of sections is mainly based on reproductive characters, vegetative ones (exomorphological aspects are scarcely considered. The present paper provides a description of anatomical characters of leaves in argentine species of Galactia. Some of them, may have diagnostic value in taxonomic treatment. Special emphasis is placed on the systematic significance of the midvein structure. The aim of the present study, covering 10 species (named in bold, is a to add more data of leaf anatomy characters, thus b to evaluate the systematic relevance and/ or ecological significance.Se realizó un estudio comparativo de la anatomía foliar de especies argentinas del género Galactia (Fabaceae, a fin de evaluar su potencial en taxonomía. En la Argentina se reconocen 14 especies (con algunas variedades, 13 de la sección Odonia -G. benthamiana Mich., G. fiebrigiana Burkart var. correntina Burkart , G. gracillima Benth., G. latisiliqua Desv., G. marginalis Benth., G. striata (Jacq. Urban y G. texana (Scheele A. Gray, G. dubia DC., G. glaucophylla Harms, G. longifolia (Jacq. Benth., G. martioides Burkart, G. neesi DC. var. australis Malme, G. pretiosa Burkart var. Pretiosa- y G. boavista (Vell. Burkart de la sección Collaearia (Burkart, 1971. Los estudios se realizaron en

  20. Modelling American trypanosomiasis in an endemic zone: application to the initial spread of household infection in the Argentine Chaco.

    Science.gov (United States)

    Fabrizio, M C; Schweigmann, N J; Bartoloni, N J

    2014-12-01

    The complex dynamics of Trypanosoma cruzi infection (Chagas disease) involves different actors and multiple transmission routes. Based on the information currently available, here, we propose a new and more comprehensive model to better understand the dynamics of the infection. This mathematical deterministic model was formulated considering: (i) the three clinical forms in humans: acute, chronic indeterminate and chronic with determinate pathology, (ii) the three main modes of transmission in the human population: vector-borne, congenital and transfusional, (iii) populations of triatomines and dogs as the main domestic reservoirs of T. cruzi and (iv) open populations. A numerical simulation was also performed to estimate the initial spread of the infection in a typical rural household in the endemic zone of the Argentine Gran Chaco. We also analysed the incidence of infected individuals corresponding to each of the three species (humans/triatomines/dogs) over times until the appearance of the first case in the other species. The model predicts that, in the absence of control measures, a few infected individuals are sufficient for the establishment and dispersion of the infection in all the inhabitants of the household. The model proposed and the results obtained allow describing the consequences of the presence of infected individuals in any of the three species considered in the dynamics and the output of the infection.

  1. Relationship Between Beak Morphological Variables and Body Size and Mantle Length of Male and Female Argentine Shortfin Squid (Illex argentinus)

    Institute of Scientific and Technical Information of China (English)

    CHEN Xinjun; LU Huajie; LIU Bilin; FANG Zhou

    2012-01-01

    Beak of cephalopod is an important hard tissue.Understanding the morphology of beak can yield critical information on the role of cephalopods in the ecosystem.The south patagonic stock of the Argentine shortfin squid,Illex argentinus,is not only one of the most important fishing targets,but also one of the most important species in the marine eco-system of the southwest Atlantic.A total of 430 samples of I.argentinus,including 229 females 103-346mm in mantle length (ML) and 201males 140-298mm in ML,were collected from the area off the Exclusive Economic Zone of Argentinean waters by Chinese squid jigging vessels during February to May 2007.The morphology of their beaks was evaluated.The relationships between beak morphological variables and ML differed significantly among males and females.They could be best described by logarithmic functions for females and linear functions for males except for upper wing length (UWL) and lower rostrum length (LRL),which followed exponential functions in their relationships with ML.The results showed the sexual dimorphism in the relationship between ML and beak morphology for the south patagonic stock of I.argentinus.However,no significant difference was found between males and females in the relationships of beak morphological variables (except for UWL) versus body weight (BW),suggesting that the relationship between beak morphological variables and BW can be used for estimating the biomass consumed by their predators.

  2. Les corps disparus. La fictionnalisation de la guerre sale dans l’Argentine de la dictature militaire (1976-1983

    Directory of Open Access Journals (Sweden)

    Jordi Bonells

    2012-08-01

    Full Text Available À travers l’analyse de certains romans en langue espagnole sur la dictature militaire en Argentine (1976-1983, l’auteur aborde la question de la disparition comme réalité historique et comme thème littéraire à travers une double approche : analyser l’intentionnalité qui porte ces récits sur le « Proceso » ; rendre compte des mécanismes qui régissent ce que l’on peut appeler la « mise en dictature du roman ».A través del análisis de algunas novelas en lengua española sobre la dictadura militar en Argentina (1976-1983, el autor aborda la cuestión de la desaparición como realidad histórica y como tema literario a partir de un doble enfoque: analizar la intencionalidad subyacente de dichos relatos sobre el Proceso; dar cuenta de los mecanismos que regulan lo que podemos denominar «la novela en dictadura».

  3. The Usefulness of Edible and Medicinal Fabaceae in Argentine and Chilean Patagonia: Environmental Availability and Other Sources of Supply

    Directory of Open Access Journals (Sweden)

    Soledad Molares

    2012-01-01

    Full Text Available Fabaceae is of great ethnobotanical importance in indigenous and urban communities throughout the world. This work presents a revision of the use of Fabaceae as a food and/or medicinal resource in Argentine-Chilean Patagonia. It is based on a bibliographical analysis of 27 ethnobotanical sources and catalogues of regional flora. Approximately 234 wild species grow in Patagonia, mainly (60% in arid environments, whilst the remainder belong to Sub-Antarctic forest. It was found that 12.8% (30 species, mainly woody, conspicuous plants, are collected for food or medicines. Most of the species used grow in arid environments. Cultivation and purchase/barter enrich the Fabaceae offer, bringing it up to a total of 63 species. The richness of native and exotic species, and the existence of multiple strategies for obtaining these plants, indicates hybridization of knowledge and practices. Only 22% of the total species used are mentioned in bothcontexts of food and medicine, reflecting low-use complementation. This study suggests a significant ecological appearance and a high level of availability in shops and exchange networks in Patagonia, highlighting the need to consider the full set of environmental and socioeconomic factors in research related to the use and cultural importance of plants in regional contexts.

  4. Prevalence and evolution of helmet use in motorcycle riders in an Argentine city (Mar del Plata, 2006-2014

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    Jeremías David Tosi

    2016-03-01

    Full Text Available Traffic collisions involving motorcyclists are a growing problem in low and middle income countries. Helmet use is the foremost protective measure for this group of road users, however many riders do not wear them. The objective of the present study is to report the changes in helmet use during the period 2006-2014 in an Argentine city and discover associated factors for the year 2014. The sample includes more than 6,900 observations of motorcyclists carried out during the years 2006 (n=962, 2008 (n=977, 2012 (n=2,542, and 2014 (n=2,466. The data indicates a progressive increase in helmet use over time, but differences due to gender and type of rider remain. Factors associated to helmet use in motorcycle drivers during 2014 were: passenger helmet use, motorcycle type, license plate use and gender. Although the results are positive, it is necessary to be attentive to the negative consequences of the growing fleet of motorcycles.

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

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    Yael M Provecho

    2014-11-01

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

  6. Influence of alternating air injection on the color and “alambrado” of natural black olives cv. Arauco, as compared with the traditional Argentine method

    OpenAIRE

    2015-01-01

    Ripe black olives cv. Arauco were processed under different conditions to evaluate the effects of alternating air injection (AI) on the color of olives and on spoilage known as “alambrado”, using a system based on the one patented by the “Instituto de la Grasa” (Sevilla, Spain), as compared with the traditional Argentine processing method, which consists of drying the olives in natural air (“extendido”) for 24 hours at 7, 14 and 21 days of fermentation. Four types of fermentation were used: b...

  7. Selection and characterization of Argentine isolates of Trichoderma harzianum for effective biocontrol of Septoria leaf blotch of wheat.

    Science.gov (United States)

    Stocco, Marina C; Mónaco, Cecilia I; Abramoff, Cecilia; Lampugnani, Gladys; Salerno, Graciela; Kripelz, Natalia; Cordo, Cristina A; Consolo, Verónica F

    2016-03-01

    Species of the genus Trichoderma are economically important as biocontrol agents, serving as a potential alternative to chemical control. The applicability of Trichoderma isolates to different ecozones will depend on the behavior of the strains selected from each zone. The present study was undertaken to isolate biocontrol populations of Trichoderma spp. from the Argentine wheat regions and to select and characterize the best strains of Trichoderma harzianum by means of molecular techniques. A total of 84 out of the 240 strains of Trichoderma were able to reduce the disease severity of the leaf blotch of wheat. Thirty-seven strains were selected for the reduction equal to or greater than 50% of the severity, compared with the control. The percentage values of reduction of the pycnidial coverage ranged between 45 and 80%. The same last strains were confirmed as T. harzianum by polymerase chain reaction amplification of internal transcribed spacers, followed by sequencing. Inter-simple sequence repeat was used to examine the genetic variability among isolates. This resulted in a total of 132 bands. Further numerical analysis revealed 19 haplotypes, grouped in three clusters (I, II, III). Shared strains, with different geographical origins and isolated in different years, were observed within each cluster. The origin of the isolates and the genetic group were partially related. All isolates from Paraná were in cluster I, all isolates from Lobería were in cluster II, and all isolates from Pergamino and Santa Fe were in cluster III. Our results suggest that the 37 native strains of T. harzianum are important in biocontrol programs and could be advantageous for the preparation of biopesticides adapted to the agroecological conditions of wheat culture.

  8. Skeletal involvement in Gaucher disease: An observational multicenter study of prognostic factors in the Argentine Gaucher disease patients.

    Science.gov (United States)

    Drelichman, Guillermo; Fernández Escobar, Nicolás; Basack, Nora; Aversa, Luis; Larroude, María Silvia; Aguilar, Gabriela; Szlago, Marina; Schenone, Andrea; Fynn, Alcyra; Cuello, María Fernanda; Aznar, Marcela; Fernández, Ramiro; Ruiz, Alba; Reichel, Paola; Guelbert, Norberto; Robledo, Hugo; Watman, Nora; Bolesina, Moira; Elena, Graciela; Veber, S Ernesto; Pujal, Graciela; Galván, Graciela; Chain, Juan José; Arizo, Adriana; Bietti, Julieta; Bar, Daniel; Dragosky, Marta; Marquez, Marisa; Feldman, Leonardo; Muller, Katja; Zirone, Sandra; Buchovsky, Greogorio; Lanza, Victoria; Sanabria, Alba; Fernández, Ignacio; Jaureguiberry, Rossana; Contte, Marcelo; Barbieri María, Angie; Maro, Alejandra; Zárate, Graciela; Fernández, Gabriel; Rapetti, María Cristina; Donato, Hugo; Degano, Adriana; Kantor, Gustavo; Albina, Roberto; Á Lvarez Bollea, María; Brun, María; Bacciedoni, Viviana; Del Río, Francis; Soberón, Bárbara; Boido, Nazario; Schweri, Maya; Borchichi, Sandra; Welsh, Victoria; Corrales, Marcela; Cedola, Alejandra; Carvani, Analía; Diez, Blanca; Richard, Lucía; Baduel, Ccecilia; Nuñez, Gabriela; Colimodio, Rubén; Barazzutti, Lucía; Medici, Hugo; Meschengieser, Susana; Damiani, Germán; Nucifora, María; Girardi, Beatriz; Gómez, Sergio; Papucci, Maura; Verón, David; Quiroga, Luis; Carro, Gustavo; De Ambrosio, Patricia; Ferro, José; Pujol, Marcelo; Castella, Cristina Cabral; Franco, Liliana; Nisnovich, Gisela; Veloso, María; Pacheco, Isabel; Savarino, Mario; Marino, Andrés; Saavedra, José Luis

    2016-10-01

    Patients with Gaucher type 1 (GD1) throughout Argentina were enrolled in the Argentine bone project to evaluate bone disease and its determinants. We focused on presence and predictors of bone lesions (BL) and their relationship to therapeutic goals (TG) with timing and dose of enzyme replacement therapy (ERT). A total of 124 patients on ERT were enrolled in a multi-center study. All six TG were achieved by 82% of patients: 70.1% for bone pain and 91.1% for bone crisis. However, despite the fact that bone TGs were achieved, residual bone disease was present in 108 patients on ERT (87%) at time 0. 16% of patients showed new irreversible BL (bone infarcts and avascular osteonecrosis) despite ERT, suggesting that they appeared during ERT or were not detected at the moment of diagnosis. We observed 5 prognostic factors that predicted a higher probability of being free of bone disease: optimal ERT compliance; early diagnosis; timely initiation of therapy; ERT initiation dose ≥45 UI/kg/EOW; and the absence of history of splenectomy. Skeletal involvement was classified into 4 major phenotypic groups according to BL: group 1 (12.9%) without BL; group 2 (28.2%) with reversible BL; group 3 (41.9%) with reversible BL and irreversible chronic BL; and group 4 (16.9%) with acute irreversible BL. Our study identifies prognostic factors for achieving best therapeutic outcomes, introduces new risk stratification for patients and suggests the need for a redefinition of bone TG. Am. J. Hematol. 91:E448-E453, 2016. © 2016 Wiley Periodicals, Inc.

  9. Isolation of Salmonella spp. from yacare caiman (Caiman yacare) and broad-snouted caiman (Caiman latirostris) from the Argentine Chaco.

    Science.gov (United States)

    Uhart, Marcela; Ferreyra, Hebe; Mattiello, Rosana; Caffer, María Inés; Terragno, Raquel; Schettino, Adriana; Prado, Walter

    2011-04-01

    Presence of Salmonella spp. was evaluated in yacare caiman (Caiman yacare) and broad-snouted caiman (Caiman latirostris) from a ranching facility in the Argentine Chaco. Crocodilian ranching programs are based on captive breeding of wild-harvested eggs and release of excess hatchlings into the wild. Samples for bacterial isolation were collected from 102 captive (35 C. yacare and 67 C. latirostris) and seven free-ranging caiman (four C. yacare and three C. latirositris) between 2001 and 2005 and from three artificially incubated C. yacare wild eggs. Two Salmonella spp. of known zoonotic potential, S. infantis and S. nottingham, were isolated from captive caiman in 2001 and 2002, respectively. This is the first report for S. nottingham in reptiles and of S. infantis in caiman. Salmonella spp. prevalence varied significantly between years, with a 77% prevalence peak in 2002. Although the cause of this increase was not confirmed, we found no correlation with the type of enclosure, caiman species, or body weight. Deteriorated physical condition of caiman hatchlings due to dietary changes in 2002 could have influenced Salmonella spp. shedding. However, external sources such as food, water, or enclosures could not be ruled out. Pathogenic Salmonella spp. present a risk for human infection. Inadvertent introduction of Salmonella spp. or other bacteria into the environment when caiman are released could pose a threat to wild caiman populations. Prophylactic measures to detect and decrease Salmonella spp. presence in caiman ranching facilities are recommended to reduce risk to humans and make caiman-ranching a sound conservation strategy for crocodilian species.

  10. Invasive breast cancer in Argentine women: association between risk and prognostic factors with antigens of a peptidic and carbohydrate nature

    Directory of Open Access Journals (Sweden)

    Croce MV

    2011-12-01

    Full Text Available Sandra O Demichelis, Marina T Isla-Larrain, Luciano Cermignani, Cecilio G Alberdi, Amada Segal-Eiras, María Virginia CroceCentre of Basic and Applied Immunological Research, Faculty of Medical Sciences, National University of La Plata, La Plata, ArgentinaObjective: In breast cancer, several tumor markers have been identified. The marker most extensively associated with breast cancer is MUC1. The objective of the study was to analyze prognostic and risk factors in relation to tumor markers in order to clarify breast cancer biology. A total of 349 primary tumor samples and lymph nodes from breast cancer patients were studied. Risk and prognostic factors were considered. An immunohistochemical approach was applied and an extensive statistical analysis was performed, including frequency analysis and analysis of variance. Correlation among variables was performed with principal component analysis.Results: All the antigens showed an increased expression according to tumor size increment; moreover, sialyl Lewis x expression showed a significant increase in relation to disease stage, whereas Tn and TF presented a positive tendency. Vascular invasion was related to sialyl Lewis x expression and number of metastatic lymph nodes. Taking into account risk factors, when a patient had at least one child, Lewis antigens diminished their expression. In relation to breastfeeding, sialyl Lewis x expression diminished, although its apical expression increased.Conclusion: Associations between MUC1 and carbohydrate antigens and risk and prognostic factors show the complexity of the cellular biological behavior that these antigens modulate in breast cancer.Keywords: breast cancer, Argentine women, risk factors, prognostic factors, antigenic expression

  11. Interactive effects of large- and small-scale sources of feral honey-bees for sunflower in the Argentine Pampas.

    Directory of Open Access Journals (Sweden)

    Agustín Sáez

    Full Text Available Pollinators for animal pollinated crops can be provided by natural and semi-natural habitats, ranging from large vegetation remnants to small areas of non-crop land in an otherwise highly modified landscape. It is unknown, however, how different small- and large-scale habitat patches interact as pollinator sources. In the intensively managed Argentine Pampas, we studied the additive and interactive effects of large expanses (up to 2200 ha of natural habitat, represented by untilled isolated "sierras", and narrow (3-7 m wide strips of semi-natural habitat, represented by field margins, as pollinator sources for sunflower (Helianthus annus. We estimated visitation rates by feral honey-bees, Apis mellifera, and native flower visitors (as a group at 1, 5, 25, 50 and 100 m from a field margin in 17 sunflower fields 0-10 km distant from the nearest sierra. Honey-bees dominated the pollinator assemblage accounting for >90% of all visits to sunflower inflorescences. Honey-bee visitation was strongly affected by proximity to the sierras decreasing by about 70% in the most isolated fields. There was also a decline in honey-bee visitation with distance from the field margin, which was apparent with increasing field isolation, but undetected in fields nearby large expanses of natural habitat. The probability of observing a native visitor decreased with isolation from the sierras, but in other respects visitation by flower visitors other than honey-bees was mostly unaffected by the habitat factors assessed in this study. Overall, we found strong hierarchical and interactive effects between the study large and small-scale pollinator sources. These results emphasize the importance of preserving natural habitats and managing actively field verges in the absence of large remnants of natural habitat for improving pollinator services.

  12. Influence of weeds on Argentine ant (Hymenoptera: Formicidae) and obscure mealybug (Hemiptera: Pseudococcidae) in a central California vineyard.

    Science.gov (United States)

    Costello, Michael J; Welch, Mark D

    2014-06-01

    Obscure mealybug is a pest of grapes in the cool climate regions of coastal California, is found on some vineyard weeds, and is tended by the Argentine ant. A study was conducted at a vineyard in Arroyo Grande, CA, to evaluate the impact of weeds on ant activity on grapevines, and the role that ants and weeds have on obscure mealybug infestation in grape clusters. The incidence of the fungus Botrytis cinerea was recorded as well. Treatments were weed exclusion versus the presence of weeds, and ant exclusion versus the presence of ants. Ant activity was evaluated weekly using sugar-based monitoring stations, and mealybug infestation and Botrytis incidence of clusters were evaluated at harvest. Ant exclusion reduced the overall number of ant visits by 82%, and ants increased mealybug infestation of clusters by 53%. Ant activity was 33% higher in the weeds treatment, but there was no impact of weeds on mealybug infestation. We suggest that the higher ant activity recorded in the weeds treatment may have been an artifact of the sugar-based sampling method. Botrytis incidence was three times higher with ants, but did not differ between weeds and weed exclusion treatments. The study supports other research showing a relationship between mealybug infestation and the presence of ants, as well as the lack of impact of floor vegetation on mealybug infestation of grape clusters. It is the first report of a relationship between ants and Botrytis, although it is more likely that the higher Botrytis incidence found here is a result of increased mealybug density than a direct effect by ants.

  13. Favipiravir (T-705 inhibits Junin virus infection and reduces mortality in a guinea pig model of Argentine hemorrhagic fever.

    Directory of Open Access Journals (Sweden)

    Brian B Gowen

    Full Text Available BACKGROUND: Junín virus (JUNV, the etiologic agent of Argentine hemorrhagic fever (AHF, is classified by the NIAID and CDC as a Category A priority pathogen. Presently, antiviral therapy for AHF is limited to immune plasma, which is readily available only in the endemic regions of Argentina. T-705 (favipiravir is a broadly active small molecule RNA-dependent RNA polymerase inhibitor presently in clinical evaluation for the treatment of influenza. We have previously reported on the in vitro activity of favipiravir against several strains of JUNV and other pathogenic New World arenaviruses. METHODOLOGY/PRINCIPAL FINDINGS: To evaluate the efficacy of favipiravir in vivo, guinea pigs were challenged with the pathogenic Romero strain of JUNV, and then treated twice daily for two weeks with oral or intraperitoneal (i.p. favipiravir (300 mg/kg/day starting 1-2 days post-infection. Although only 20% of animals treated orally with favipiravir survived the lethal challenge dose, those that succumbed survived considerably longer than guinea pigs treated with placebo. Consistent with pharmacokinetic analysis that showed greater plasma levels of favipiravir in animals dosed by i.p. injection, i.p. treatment resulted in a substantially higher level of protection (78% survival. Survival in guinea pigs treated with ribavirin was in the range of 33-40%. Favipiravir treatment resulted in undetectable levels of serum and tissue viral titers and prevented the prominent thrombocytopenia and leucopenia observed in placebo-treated animals during the acute phase of infection. CONCLUSIONS/SIGNIFICANCE: The remarkable protection afforded by i.p. favipiravir intervention beginning 2 days after challenge is the highest ever reported for a small molecule antiviral in the difficult to treat guinea pig JUNV challenge model. These findings support the continued development of favipiravir as a promising antiviral against JUNV and other related arenaviruses.

  14. Faulting and erosion in the Argentine Precordillera during changes in subduction regime: Reconciling bedrock cooling and detrital records

    Science.gov (United States)

    Fosdick, Julie C.; Carrapa, Barbara; Ortíz, Gustavo

    2015-12-01

    The Argentine Precordillera is an archetypal retroarc fold-and-thrust belt that records tectonics associated with changing subduction regimes. The interactions between exhumation and faulting in the Precordillera were investigated using apatite and zircon (U-Th-Sm)/He and apatite fission track thermochronometry from the Precordillera and adjacent geologic domains. Inverse modeling of thermal histories constrains eastward in-sequence rock cooling associated with deformation and erosion from 18 to 2 Ma across the Central Precordillera tracking thrusting during this time. The youngest AHe ages (5-2 Ma) and highest erosion rates are located in the eastern and western extremities of the Precordillera and indicate that recent denudation is concentrated at its structural boundaries. Moreover, synchronous rapid Pliocene cooling of the Frontal Cordillera, Eastern Precordillera, and Sierra del Valle Fértil was coeval with initiation of basement-involved faulting in the foreland. Detrital zircon U-Pb geochronology from the ca. 16-8.1 Ma Bermejo foreland basin strata suggests fluvial connectivity westward beyond the Frontal Cordillera to the Main Cordillera and Coast Range followed by an important shift in sediment provenance at ca. 10 Ma. At this time, we suggest that a substantial decrease in Permo-Triassic igneous sources in the Frontal Cordillera and concurrent increase in recycled zircons signatures of Paleozoic strata are best explained by uplift and erosion of the Precordillera during widening of the thrust-belt. Bedrock thermochronology and modeling indicate a 2-6 Myr lag time between faulting-related cooling in the hinterland and the detrital record of deformation in the foreland basin, suggesting that for tectonically active semi-arid settings, bedrock cooling may be more sensitive to onset of faulting. We suggest that high erosion rates in the Frontal Cordillera and Eastern Precordillera are associated with increased interplate coupling during shallowing of the

  15. Variation in the proximate composition and fatty acid profile recovered from Argentine hake (Merluccius hubbsi waste from Patagonia

    Directory of Open Access Journals (Sweden)

    Cretton, M.

    2016-03-01

    Full Text Available The fish processing operations in Patagonia produce large amounts of waste. The main fishery resource in Argentina is the Argentine hake (Merluccius hubbsi. The ports of the province of Chubut (the most important of which are Puerto Madryn, Rawson and Comodoro Rivadavia, together with Caleta Paula Port (province of Santa Cruz, in the Argentine Patagonia, capture more than 82,000 tons of hake annualy, 80% of which are of M. hubbsi, which is mostly converted into fillets. From this capture, about 2,296 tons of liver would be available for the extraction of oil. To promote the recovery and industrial use of fish oil, in the present study, we determined the variation in the proximate composition and fatty acid profile of Argentine hake waste from the ports mentioned above at different catch times. Proximate composition was determined according of the Official Methods of Analysis (AOAC. Fatty acid profile was analyzed by gas chromatography of the fatty acid methyl esters (FAMEs. A standard mixture of FAMEs was run under identical conditions to identify the compounds on the basis of their retention times. Fatty acids were quantified using heptadecanoic acid (C17:0 as internal standard. The highest lipid recovery (27.0 to 41.8% of total lipids was obtained from the liver fraction. Palmitic acid (C16:0, oleic acid (18:1 n9, docosahexaenoic acid (22:6 n3, eicosapentaenoic acid (20:5 n3 and palmitoleic acid (16:1 were the main constituents. Protein levels in viscera without livers (V-L were higher than those in the liver. The extraction of marine fish oil and the production of fish offal meal from waste from fish factories would contribute to the sustainability of the regional industry, because it would also decrease the volume of waste, with benefits to the environment.El procesamiento de pescados en Patagonia produce gran cantidad de residuos. El recurso de pesca más importante en la Argentina es la merluza argentina (Merluccius hubbsi. En Patagonia

  16. Argentine Radiation Protection Society Experience in RP education and training; Experiencia de la Sociedad Argentina de Radioproteccion en capacitacion en Proteccion Radiologica

    Energy Technology Data Exchange (ETDEWEB)

    Bomben, A. M.; Ciallella, N. R.; Thomasz, E.; Rudelli, M.; Gisone, P.; Ventura, M.; Gomez Parada, I.; Signoretta, C.

    2003-07-01

    Since its creation in 1967, the Argentine Radiation Protection Society (SAR) promotes all the radiation protection and nuclear safety aspects not only within the scientific, technical and academic areas, but also to general public. To fulfill this objective, SAR organised training and refresher courses, seminars and workshops on RP subjects. During 2002, SAR organised 7 basic and specialized courses regarding the uses of radioactive materials in industrial applications and the course on medical response in radiological accidents, that was attended by Argentine and other Latin American participants. The programmes of the courses are developed in compliance with the legal requirements and also considering specifics needs. In this paper, the characteristics of the courses are enunciated and basic statistics regarding courses and participants are presented. For the 2003 and 2004, SAR foresees the organisation of 18 courses per year and has the capacity to deliver other courses by request. all the courses are delivered in Spanish language. Based on this educational experience SAR consider a priority the inclusion, of a RP module in all the scientific graduate programmes to generate awareness on the importance of RP. Taking into account the migration of professionals to Europe and North America and the Globalization, SAR advocates the harmonization of RP syllabus to attain an international recognition. (Author)

  17. El campo médico argentino y su mirada al tribadismo, 1936-1955 The medical argentine field and its look on the tribadism, 1936-1955

    Directory of Open Access Journals (Sweden)

    Karina Inés Ramacciotti

    2008-08-01

    Full Text Available Este artículo describe y analiza la articulación discursiva sobre el lesbianismo en el campo médico argentino entre 1936 y 1955. Las "verdades" de la medicina poseen una fuerza normativa que constituyen un lugar privilegiado para propiciar la aplicación del modelo heterosexual e imponer esta visión al resto de la sociedad. En primer lugar esbozaremos los argumentos médicos en el ámbito europeo por ser los referentes más recorridos por la elite médica argentina. Luego, analizaremos las relecturas y apropiaciones realizadas en el contexto argentino articulándolas con el modelo hegemónico heterosexual de feminidad.This article describes and analyzes the discursive articulation on the lesbianism in the medical Argentine field between 1936 and 1955. The "truths" of the medicine possess a normative force which constitutes a suitable place to favor the heterosexual model and to impose this point of view to the rest of the society. First we will outline the medical arguments in the European area. They were the most accessed models by the medical Argentine elite. Then, we will analyze the re-readings and appropriations realized in Argentina, articulating them with the hegemonic heterosexual model of femininity.

  18. Vestiges of an Ordovician west-vergent thin-skinned Ocloyic thrust belt in the Argentine Precordillera, southern Central Andes

    Science.gov (United States)

    Thomas, William A.; Astini, Ricardo A.

    2007-08-01

    Collision of the down-going, Laurentia-derived Argentine Precordillera terrane with the Gondwanan margin drove the Ordovician Ocloyic orogeny, including subduction volcanism, metamorphism, and top-to-west shearing east of the Precordillera. In the Precordillera, above passive-margin carbonates (Lower Ordovician San Juan Limestone and older carbonates), a Middle to Upper Ordovician westward-prograding synorogenic clastic wedge of black shale (Gualcamayo Shale) and coarser clastic sediment (Las Vacas Conglomerate and Trapiche Formation) fills a peripheral foreland basin. New research has identified vestiges of a west-directed thin-skinned Ocloyic foreland thrust belt that has been fragmented by east-directed Andean thrusting. The El Corral thrust sheet, with hanging-wall detachment in the San Juan Limestone, extends over a west-directed footwall frontal ramp and extensive flat to low-angle footwall cutoff in the Gualcamayo and Las Vacas formations. Las Vacas conglomerates in the footwall include olistoliths (10-m scale) exclusively of San Juan Limestone and Gualcamayo Shale; the beds in some olistoliths are folded. The advancing El Corral thrust sheet successively supplied and overrode the stratigraphically restricted olistoliths. In the El Corral footwall, tight west-vergent folds and faults within an anticlinorium in the San Juan Limestone and Gualcamayo Shale suggest a deeper (unexposed) thrust fault, the Los Celestitos fault. West of the anticlinorium, easterly dip (restored to remove Andean deformation) beneath an angular unconformity between Las Vacas and Trapiche beds is consistent geometrically with the trailing limb of a west-vergent fault-propagation anticline in the hanging wall of the subsurface Los Celestitos fault. The same angular unconformity truncates the El Corral fault and hanging-wall strata. In the Trapiche Formation, contrasting sedimentary facies from sandy turbidites westward to limestone-clast megabeds and olistoliths suggest another frontal

  19. Oxigenoterapia en vuelos nacionales e internacionales en la Argentina Oxygen therapy during Argentine-based national and international flights

    Directory of Open Access Journals (Sweden)

    Alejandro Martínez Fraga

    2008-12-01

    Full Text Available No existe estudio que evalúe el estado de la oxigenoterapia en vuelo (OV en nuestro país. El objetivo de este estudio fue evaluar los requisitos, dificultades, sistemas y costos de la OV de las companías aéreas nacionales (N e internacionales (I que operan desde Buenos Aires. Se utilizó la misma encuesta telefónica y metodología que el estudio de Stoller y col.12. Los autores se comunicaron telefónicamente con 25 aerolíneas que operaban en los dos aeropuertos de Buenos Aires en julio de 2007, y se interrogó sobre los requisitos necesarios para viajar, sistemas y costos. Se usaron técnicas estadísticas convencionales siendo significativa pThere are no data about supplemental oxygen in flight in our country. The objective of our study was to evaluate arranging in-flight-oxygen required by a simulated traveler, system of administration and costs, and to compare the results between Argentine-based (A and international (I airlines. The questionnaire used was similar to that of Stoller et al12. Data collection consisted of telephone calls placed by one of the authors to all commercial air carriers listed in our two Buenos Aires City airports during July 2007. A structured interview with questions was addressed on issues that an oxygen-using air traveler would need to arrange in-flight oxygen. Of the 25 airlines, 6 were discarded because of lack of information (24%, three A -60%-and one I-16%-. All A allowed in-flightoxygen vs. 80% of I (p<0.05, 100% of A and 94% of I required a medical certificate (p=NS; 71% of A and 100% of I required previous notification (p<0.05; 50% of A and 87% of I provided patient interphases of oxygen administration (p=NS. Free of charge oxygen could be provided by 100% of A and 50% of I, with airline charge between 70 to 300 dollars. In conclusion, we observed different policies, rules, availability, and a pronounced lack of standardization of airline information. The cost of oxygen was very different between

  20. 14 November 2016 - Ambassador Extraordinary and Plenipotentiary H. M. Cima, Permanent Representative of the Argentine Republic to the United Nations Office and other international organisations in Geneva signing the guest book with CERN Director-General F. Gianotti, Director for International Relations C. Warakaulle; Adviser J. Salicio Diez and V. Perez-Reale, CERN HR Department, are also present.

    CERN Multimedia

    Brice, Maximilien

    2016-01-01

    His Excellency Mr Héctor Marcelo Cima Ambassador Extraordinary and Plenipotentiary Permanent Representative of the Argentine Republic to the United Nations Office and other international organisations in Geneva

  1. Sobre las etapas políticas de los doscientos años argentinos On political stages of two centuries argentines

    Directory of Open Access Journals (Sweden)

    Ricardo Sidicaro

    2011-06-01

    Full Text Available Las diferentes etapas del desarrollo político de los dos siglos argentinos son analizadas por el autor considerando interpretaciones de actores políticos y de sociólogos de cada época que centraron el foco de su interés en los sistemas de poder y en los modos de acción de los dirigentes del Estado y de los partidos políticos.Different stages of political development of two centuries argentines are analyzed by the author considering interpretations of political actors and sociologists of each era that centered the focus of interest in systems of power and modes of action of the leaders of the State and political parties.

  2. Lathyrus linearifolius (Leguminosae-Vicieae confirmed species for the Argentine flora LATHYRUS LINEARIFOLIUS (LEGUMINOSAE-VICIEAE, ESPECIE CONFIRMADA PARA LA FLORA ARGENTINA

    Directory of Open Access Journals (Sweden)

    Ricardo O. Vanni

    2010-08-01

    Full Text Available Lathyrus linearifolius Vogel is confirmed in the Argentine flora. The number of species of the genus recorded for the northeast region is increased to nine. The new citation is described and illustrated indicating its geographic distribution. A key to distinguish the nine species from NE of Argentina is provided Lathyrus linerifolius Vogel se confirma para la flora Argentina. El número de especies del género mencionadas para la región nordeste se incrementa a nueve. Se describe e ilustra la nueva cita, indicando su distribución geográfica. Se presenta una clave para diferenciar a las nueve especies representadas en el NE de Argentina

  3. Organización y financiamiento del sistema de salud en la Argentina The Argentine Health System: Organization and financial features

    Directory of Open Access Journals (Sweden)

    Hugo E Arce

    2012-10-01

    Full Text Available El sistema de salud argentino se caracteriza por los siguientes rasgos: a la organización federal del país, donde las provincias se encargan de administrar salud y educación; b coexistencia de servicios públicos y privados, tanto ambulatorios como de internación; c entidades fragmentadas de seguridad social, en su mayoría de origen extra-estatal. Se describen y se calculan los componentes del sistema; se analiza la distribución del poder de decisión entre la autoridad sanitaria nacional y las provinciales y se comparan con la organización de otros países. Se muestran datos estadísticos sobre distribución del gasto en salud y cobertura de servicios en la población. Asimismo se presentan flujos financieros entre las diversas fuentes de recursos, aseguradores, prestadores y los usuarios de cada sector.The Argentine health system is defined by the following features: a federal country organization; b coexistence of public and private services with either outpatients or inpatients; c fragmented entities of social security, most of these originated outside of the state organization. Components of the system are described and weighed; making decisions strength between national and provincial health authorities is analyzed and the Argentine system is compared with that of other countries. Statistical data on distribution of health expenditures and coverage of health services are presented as well as financial flow among diverse funding sources, insurers, providers and users of each sector.

  4. Argentine Space Assets.

    Science.gov (United States)

    1997-09-01

    Interview, December 1996. Perea, Mauricio, La CFI Invierte En La Empresa Encargada De Las Comunicaciones Por Satelite En Argentina. Corporacion Financiera...1 Attn: Servicio de Comunicaciones Navales 630 Indiana Avenue NW Washington, D.C. 20004-2989 13. A rgentine N

  5. V Argentine - matriarhat

    Index Scriptorium Estoniae

    2007-01-01

    Argentina presidendi Nestor Kirchneri abikaasa Cristina Fernandez de Kirchner edestas presidendivalimistel oma konkurente. C. Kirchneri edu põhjusest, tema võrdlemisest Evita Peroni ja Hillary Clintoniga

  6. ABACC: annual report 2012 - Brazilian-Argentine Agency for the Accounting and Control of Nuclear Materials; ABACC: informe annual 2012 - Agencia Brasileiro-Argentina de Contabilidade e Controle de Materiais Nucleares

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2012-07-01

    This document reports the actives during the year 2012 related to: technical activities as safeguards application and advances in application of safeguards; main activities conducted in Brazil and main activities developed at ABACC headquarters; management of the Quadripartite Agreement and of the SCCC - Common System for Accounting and Control of Nuclear Materials; training; technical cooperation; institutional, administrative and financial activities; perspectives for 2013; list of inspectors; list of Brazilian and Argentine facilities subject to the Quadripartite Agreement.

  7. Accountability and non-proliferation nuclear regime: a review of the mutual surveillance Brazilian-Argentine model for nuclear safeguards; Accountability e regime de nao proliferacao nuclear: uma avaliacao do modelo de vigilancia mutua brasileiro-argentina de salvaguardas nucleares

    Energy Technology Data Exchange (ETDEWEB)

    Xavier, Roberto Salles

    2014-08-01

    The regimes of accountability, the organizations of global governance and institutional arrangements of global governance of nuclear non-proliferation and of Mutual Vigilance Brazilian-Argentine of Nuclear Safeguards are the subject of research. The starting point is the importance of the institutional model of global governance for the effective control of non-proliferation of nuclear weapons. In this context, the research investigates how to structure the current arrangements of the international nuclear non-proliferation and what is the performance of model Mutual Vigilance Brazilian-Argentine of Nuclear Safeguards in relation to accountability regimes of global governance. For that, was searched the current literature of three theoretical dimensions: accountability, global governance and global governance organizations. In relation to the research method was used the case study and the treatment technique of data the analysis of content. The results allowed: to establish an evaluation model based on accountability mechanisms; to assess how behaves the model Mutual Vigilance Brazilian-Argentine Nuclear Safeguards front of the proposed accountability regime; and to measure the degree to which regional arrangements that work with systems of global governance can strengthen these international systems. (author)

  8. L’identité argentine ou la construction d’un mythe littéraire entre Europe et Amérique

    Directory of Open Access Journals (Sweden)

    Lionel Souquet

    2002-06-01

    Full Text Available Cet article propose une approche de quelques archétypes qui, jusqu’en Europe, ont contribué à construire une image un peu théâtrale et parfois floue de l’Argentin. Une image littéraire avant tout, mais paradoxalement, souvent proche de la réalité socioculturelle car l’identité du romancier latino-américain est souvent liée à un profond engagement qui se traduit par la description et l’analyse – philosophique, politique, historique, sociologique… - du réel. C’est en étudiant le portrait que les intellectuels du XIXème siècle dressent du gaucho, personnage emblématiquement fort mais aussi victime de toutes les manipulations idéologiques, que l’on voit comment l’identité argentine a été forgée autour d’une dichotomie civilisation-barbarie dont le mythe semble encore vivant dans l’Argentine d’aujourd’hui. L’article aborde ensuite le thème de l’immigration, facteur essentiel de la mutation de cette société et de son entrée dans le XXème siècle. Le portrait de l’Argentin de classe moyenne (groupe social qui distingue particulièrement l’Argentine du reste de l’Amérique latine est ensuite dessiné plus en détail, mais à travers le miroir à la fois déformant et grossissant de l’écrivain Manuel Puig. Il est indéniable que l’imaginaire modèle la réalité. La littérature est certes un miroir déformant et contradictoire de la réalité mais elle appartient aussi à cette réalité.This paper focuses on some of the archetypes which have contributed to the construction of the rather theatrical and blurred picture of the Argentinian – including in Europe. Paradoxically enough, this literary image is not so far removed from the socio-cultural reality as the identity of the Latin-American novelist is often defined by his or her engagement with reality through (philosophical, political, historical and sociological description and analysis. A study of the portrayal by 19th

  9. Comportamiento de cepas argentinas del virus de la Coriomeningitis Linfocitaria en roedores Behavior of Argentine lymphocytic choriomeningitis virus strains in rodents

    Directory of Open Access Journals (Sweden)

    María Del Cármen Saavedra

    2007-10-01

    Full Text Available La actividad del virus LCM fue informada en Argentina a comienzos de la década del 70 y sólo han sido aisladas cinco cepas a partir del roedor Mus domesticus y dos de humanos. El objetivo de este trabajo consistió en investigar características biológicas de las cepas argentinas de virus LCM para compararlas entre sí y respecto a las cepas históricas WE y Armstrong. En células L 929 se obtuvieron placas bajo agarosa tanto con las cepas humanas como con las cepas de ratón, pero en células Vero sólo se obtuvieron placas con las cepas humanas. No se observó ninguna característica morfométrica de las placas que distinguiera nítidamente a las cepas históricas de las cepas argentinas, ni se observaron diferencias que se relacionen con las especies de origen de las cepas. Las cepas históricas y las cepas argentinas no fueron letales para ratón recién nacido (rrn generando una infección persistente, según se comprobó al inocular ratones recién nacidos (rrn por vía intracerebral con cepas de virus LCM y detectarse virus en los cerebros cosechados a diferentes días post inoculación. La única excepción fue la cepa Cba An 13065 que resultó virulenta para rrn ya que con sólo 0.026 UFP se logró 1 DL50. Todas las cepas resultaron letales en ratón adulto (rad, siendo las cepas de ratón más virulentas que las cepas de humanos. Estos resultados permitieron evidenciar el diferente comportamiento en cultivos celulares de las cepas de ratón con respecto a las cepas humanas, e identificar marcadores de virulencia mediante la respuesta a la inoculación por vía intracerebral del rad y del rrn.The activity of LCM virus was first reported in Argentina at the beginning of the seventies and only five strains have been isolated from rodents Mus domesticus and two from humans. The objective of this paper was to find differential biological characteristics of Argentine strains of LCM virus comparing them in relation to the historical

  10. Climate variability, precipitation trends, and impacts on surface processes in humid to arid climate transition zones of the NW Argentine Andes (24° S, 65° W)

    Science.gov (United States)

    Castino, Fabiana; Bookhagen, Bodo; Strecker, Manfred

    2015-04-01

    In the Andes of NW Argentina the distribution and amount of rainfall and associated surface processes are intimately correlated with pronounced topographic gradients and relief contrasts that intercept easterly moisture-bearing winds related to the South American Monsoon System. These conditions have led to a pronounced elevation-dependent distribution of rainfall, which involves areally limited transition zones between the humid eastern flanks of the orogen (eastern foreland and eastern flanks of the E Cordillera) and the arid orogen interior (Puna Plateau). At interannual scales rainfall patterns in this area can be modulated by different atmospheric disturbances, such as the South Atlantic Convergent Zone and the El Niño Southern Oscillation, resulting in drought or flooding events. During the last two decades, field observations document fluvial aggradation in many intermontane valleys along the eastern flanks of the orogen. This may be related to changing overall climatic conditions, impacting hillslope erosion processes at high elevation, but contemporaneously overwhelming the fluvial system and reducing transport capacity, leading to transient sediment storage. We analyzed rainfall trends in the humid to arid climatic transition zone in the NW Argentine Andes over different time periods to characterize the spatiotemporal variability of rainfall patterns during the last five decades. We relied on both daily ground station (40 stations, 1956-2012) and three-hourly remote sensing rainfall data (3B42 V7 TRMM data, 1998-2014). Seasonal total anomalies analysis shows a complex rainfall pattern, reflected both in station data and remote sensing observations with clear positive (negative) statistically significant trends in the northern Puna Plateau and in the northern part of the foreland basin (southern part of the eastern foreland basin) of up to +20mm/yr (-20mm/yr). Quantile regression of three-hourly and daily data furthermore shows that, on average

  11. Discussion about decision support systems using continuous multi-criteria methods for planning in areas with hydro-basins, agriculture and forests, from examples in Argentine.

    Science.gov (United States)

    Anton, J. M.; Grau, J. B.; Tarquis, A. M.; Andina, D.; Cisneros, J. M.; Sanchez, E.

    2012-04-01

    The authors were involved last years in projects considering diverse decision problems on the use of some regions in Argentine, and also related to rivers or rural services in them. They used sets of multi-criteria decision methods, first discrete when the problem included few distinct alternatives, such as e.g. forestry, traditional or intensive agriculture. For attributes they were different effects, classified then in environmental, economic and social criteria. Extending to other gentler areas, such as at South of the Province of Córdoba, Arg., they have balanced more delicately effects of continuous levels of actions, with a combination of Goal Programming linked methods, and they adopted compromises to have precise solutions. That has shown, and in part open, a line of research, as the setting of such models require various kinds of definitions and valuations, including optimizations, goals with penalties in deviations and restrictions. That can be in diverse detail level and horizon, in presence of various technical and human horizons, and that can influence politics of use of terrain and production that will require public and private agents. The research will consider consideration of use and conservation of soils, human systems and agro productions, and hence models for optimization, preferably in such Goal Programming ways. That will require considering various systems of models, first in theory to be reliable, and then in different areas to evaluate the quality of conclusions, and maybe that successively if results are found advantageous. The Bayesian ways will be considered, but they would require a prospective of sets of precise future states of nature or markets with elicited probabilities, which are neither evident nor decisive for the moment, as changes may occur in years but will be very unexpected or uncertain. The results will be lines of models to aid to establish policies of use of territories, by public agencies setting frames for private

  12. Estudio histórico y bibliométrico de la revista argentina Diaeta Historical and bibliometric study of the argentine journal Diata

    Directory of Open Access Journals (Sweden)

    V Aguirre

    2010-03-01

    Full Text Available Objetivo: Evaluar el desarrollo de la investigación y la publicación científica de los nutricionistas argentinos a través del análisis histórico y bibliométrico de la revista Diaeta. Método: Diseño descriptivo transversal. Todos los números de la revista Diaeta desde el comienzo de su edición en 1981 hasta fines de 2008 fueron incluidos. Se obtuvo una muestra de 63 ejemplares mediante muestreo estratificado por cada año. Resultados: Se observó un aumento en el porcentaje de Artículos Originales y el aumento en otras áreas temáticas diferentes de la tradicional de Dietoterapia. El promedio del número de autores por artículo científico, fue de tres por Artículo Original y dos autores por Trabajo de Actualización y/o Revisión. Las citas bibliográficas fueron en su mayoría en idioma inglés, en segundo término en español. Las profesiones de los autores más productivos, además de los Licenciados en Nutrición fueron; médicos, químicos, e ingenieros. Conclusiones: La revista DIAETA ha mostrado en pocos años un importante progreso acompañando el desarrollo de la investigación de los nutricionistas del país.Objective: To evaluate the development of research and scientific publications by Argentine nutritionists through the historical and bibliometric analysis of Diaeta journal. Methodology: Descriptive transversal design. All the issues of Diaeta journal, from the beginning of its edition in 1981 through late 2008, were included in this study. A sample of 63 units was obtained through a stratified sampling for each year. Results: An increase in the number of Original Articles and other thematic areas other than the traditional Diet Therapy was observed. The average number of authors per scientific article was three for Original Articles and two authors for Update and/or Review articles. The most frequent language for the bibliographical references was English, Spanish being in the second place. Professions of the most

  13. The argentine electric sector reform and its correlation with energy efficiency; La reforma del sector electrico argentino y su relacion con la eficiencia energetica

    Energy Technology Data Exchange (ETDEWEB)

    Carpio, Claudio [MGM International (Argentina)

    2005-04-15

    The reforms in the Argentine electrical sector and the effect these have originated in the energy efficiency policies for public sector are presented. The characteristics exposed of the Argentina Electric sector previous to the 1992 transformation are the departing base that gave rise to the reform fundaments, generating privatizations and a vertical economic scheme. The transformation of the electric sector departing from its environmental regulations yielded in a quality service, good electricity distribution, better prices and proper energy efficiency. [Spanish] Se presentan las reformas en el sector electrico argentino y el efecto que han tenido sobre las politicas de eficiencia energetica elaboradas en el sector publico. Las caracteristicas expuestas del sector electrico argentino previas a la transformacion de 1992 son la base de partida que dio lugar a los fundamentos de la reforma generando privatizaciones y un esquema economico vertical. La transformacion del sector electrico a partir de sus regulaciones energeticas y ambientales redituaron en calidad de servicio, de distribucion de electricidad, precios y en la propia eficiencia energetica.

  14. [Quali-quantitative study of the social variables defining transmission scenarios of Argentine Hemorrhagic Fever in the provinces of Buenos Aires and Santa Fe, 2001-2010].

    Science.gov (United States)

    Mastrangelo, Andrea; Tagliabue, Paula; Berro, Lorena; De Carolis, Darío; Sinchi, Anabel; Digilio, Clara; Enria, Delia

    2014-08-01

    The aim of this paper was to characterize transmission scenarios of Argentine Hemorrhagic Fever in the post-vaccination period (2001-2010). The study was made up of three phases. The first consisted of a quantitative analysis using the database of the Dr. Julio I. Maiztegui National Institute of Human Viral Diseases [Instituto Nacional de Enfermedades Virales Humanas] regarding the confirmed cases in the period of study (221 cases). Taking into account the transmission site and the known endemic area, cases were grouped into three hypothetical transmission scenarios, identified as: a) classical, b) emerging-reemerging, c) traveling. In the second phase, in order to test these hypotheses, in-depth interviews were carried out from August to September 2011 within an intentionally selected sample of patients distributed proportionally among the three hypotheses. Finally, in the third stage, the data obtained for each hypothetical scenario were grouped into three spatiotemporal scales: the microscale (subject), the mesoscale (locality) and macroscale (region). The results show that new transmission sites are associated with the social dynamics of cereal production and port-bound routes.

  15. Biofouling and biodeterioration in materials stored at the Historical Archive of the Museum of La Plata, Argentine and at the National Archive of the Republic of Cuba.

    Science.gov (United States)

    Guiamet, Patricia; Borrego, Sofía; Lavin, Paola; Perdomo, Ivette; de Saravia, Sandra Gómez

    2011-07-01

    The aims of this paper were to study the biofouling and biodeterioration of photos and maps stored at Historical Archive of the Museum of La Plata (HAMP), Argentine, and two repositories of the National Archive of Cuba Republic (NARC) and to carry out the physiological characterization of the isolated fungi and bacteria. The role of the environmental microbiota in the biofouling formation was also studied. Microbial assemblages in the air were sampled by sedimentation technique while those on documents were sampled by swabbering. Biofilm formation and biofouling were monitored by scanning electron microscope (SEM). Large microbial assemblages were found at NARC archives with the prevalence of genera Aspergillus, Cladosporium and Penicillium, whereas at HAMP these values were lower, Penicillium was the only fungal genus detected. Most of the fungi degraded cellulose and produced pigments and acids, and all of the isolated bacteria had proteolytic and/or cellulolytic activity. In all cases, a higher concentration of viable bacteria than of fungi was isolated from documents. These results correlated with bacterial values detected in air at NARC repositories. However, this correlation cannot be observed at HAMP where Aspergillus, Penicillium and Talaromyces helicus (teleomorph of Penicillium) were isolated. It is the first time that the last genus is reported in documents.

  16. The influence of disturbed habitat on the spatial ecology of Argentine black and white tegu (Tupinambis merianae), a recent invader in the Everglades ecosystem (Florida, USA)

    Science.gov (United States)

    Klug, Page E.; Reed, Robert N.; Mazzotti, Frank J.; McEachern, Michelle A.; Vinci, Joy J.; Craven, Katelin K.; Yackel Adams, Amy A.

    2015-01-01

    The threat of invasive species is often intensified in disturbed habitat. To optimize control programs, it is necessary to understand how degraded habitat influences the behavior of invasive species. We conducted a radio telemetry study to characterize movement and habitat use of introduced male Argentine black and white tegus (Tupinambis merianae) in the Everglades of southern Florida from May to August 2012 at the core and periphery of the introduced range. Tegus at the periphery moved farther per day (mean 131.7 ± 11.6 m, n = 6) compared to tegus at the core (mean 50.3 ± 12.4 m, n = 6). However, activity ranges were not significantly smaller in the core (mean 19.4 ± 8.4 ha, n = 6) compared to periphery (mean 29.1 ± 5.2 ha, n = 6). Peripheral activity ranges were more linear due to activity being largely restricted to levee habitat surrounded by open water or marsh. Tegus were located in shrub or tree habitat (mean 96%) more often than expected based on random locations (mean 58%), and the percent cover of trees and shrubs was higher in activity ranges (mean 61%) than the general study area (17%). Our study highlighted the ability of tegus to spread across the Florida landscape, especially in linear disturbed habitats where increased movement occurred and in areas of altered hydrology where movement is not restricted by water.

  17. Passive acoustic monitoring, development of disturbance calls and differentiation of disturbance and advertisement calls in the Argentine croaker Umbrina canosai (Sciaenidae).

    Science.gov (United States)

    Tellechea, J S; Fine, M L; Norbis, W

    2017-01-23

    Disturbance and advertisement calls of the Argentine croaker Umbrina canosai were recorded from coastal Uruguayan waters. Dissections indicate typical sciaenid extrinsic swimbladder muscles present exclusively in males. Disturbance calls were produced when captive U. canosai were startled, chased with a net or grabbed by the tail. Calls were unusual for sciaenids because each pulse consisted of multiple cycles. The number of cycles per pulse and dominant frequency did not change with U. canosai size, but pulse duration and interpulse interval increased. Advertisement calls were recorded from unseen choruses in the field and confirmed with captive individuals in a large tank. Advertisement calls were recorded throughout the known range of the species in Uruguay indicating a continuous belt of spawning populations. Tank recordings of the same individuals permitted explicit comparisons between the two calls. Advertisement call pulses averaged 2·4 more cycles (11·0-8·6) although pulses of both calls were basically similar as were durations and dominant frequencies. Pulse number, however, differed markedly, averaging 13·6 and 3·4 pulses for disturbance and advertisement calls respectively. Furthermore, disturbance calls were produced as a rapid series with an interpulse interval of 26-31 ms whereas advertisement call patterns were less stereotyped and ranged from <100 to 450 ms. Multicycle pulses distinguished U. canosai from other sympatric sciaenids.

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

    Directory of Open Access Journals (Sweden)

    Anne Gustavsson

    2013-10-01

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

  19. [Comparison of FRAX Score without bone mineral density determination and the criteria proposed by the Argentine Osteoporosis Society for the use of antiresorptive therapy in postmenopausal women].

    Science.gov (United States)

    Camporro, Fernando; Redondo, Laura; Bulacio, Exequiel; Gutiérrez Magaldi, Ignacio; Chamale, Elías; Sáenz, Fabián

    2015-01-01

    To identify patients at high risk of fracture using clinical risk factors could reduce health costs arising from the realization of a bone densitometry. The aim of this study was to compare the FRAX score without bone mineral density (BMD) with the criteria proposed by the Argentine Society of Osteoporosis (SAO) to consider starting antiresorptive treatment. We conducted an observational, cross-sectional study where 330 postmenopausal women between 40 and 90 years of age were included. The number of treatments given if the FRAX tool without BMD had been followed was compared with the number of treatments indicated using the SAO criteria. Using the SAO criteria, 85 (25.8%) patients would initiate antiresorptive treatment compared with 15 (4.5%) using the FRAX without BMD (p = 0.0019). Among the 67 patients with a diagnosis of osteoporosis by BMD determination, all of them (100%) would have received treatment by using the SAO criteria compared with 10 (15%) using the FRAX score (p = 0.011). The use of FRAX without BMD significantly underestimates the number of patients who should receive antiresorptive treatment. In patients diagnosed with osteoporosis by BMD, the FRAX score underestimates the number of patients to be treated.

  20. Population genetic structure and body shape assessment of Pagrus pagrus (Linnaeus, 1758 (Perciformes: Sparidae from the Buenos Aires coast of the Argentine Sea

    Directory of Open Access Journals (Sweden)

    Leonardo P. Porrini

    Full Text Available This study highlights the analysis of the morphological and genetic variation of the common sea bream Pagrus pagrus, and compares its two main areas of concentration: the northern (35ºS - 38ºS and the southern areas (39ºS - 41ºS of the Buenos Aires coast of the Argentine Sea. Body shape characterization presented two significantly different morphotypes (Wilks' Lambda=0.224, P<0.001. Northern individuals displayed a higher middle area while southern ones were smaller and their caudal peduncle was shorter. The northern and southern areas did not yield significant genetic differences either with the control region or the microsatellite loci, revealing that P. pagrus is not genetically structured. However, individuals from these areas should not be managed as a single group since they display distinct life history traits, responsible for morphological differentiation. The presence of two spawning areas with distinctive characteristics would define two stocks of P. pagrus from the Buenos Aires coast.

  1. The press and the military government: their relationship in the history of Argentine archaeology (1976-1983. The case of the “La Nación” newspaper

    Directory of Open Access Journals (Sweden)

    Paola Silvia RAMUNDO

    2010-08-01

    Full Text Available This paper presents a critical and reflexive analysis of the news published between 1976 and 1983 by the newspaper La Nación dealing with Argentine archaeology. Hence, news are considered a tool to study the history of this discipline during a badly reviewed period, evaluating the impact of the socio-historical context on Archaeology in order to determine the degree of public communication of science and the specific role played by this discipline in the construction of the past. Current and past views on Archaeology by the press are analyzed, considering these written documents an opinion former mass media.

  2. La norma argentina de construcción de tesauros IRAM 32057: necesidad de actualización. 1. El vocabulario controlado The Argentine Standard for Thesaurus Construction IRAM 32057: a Need for Updating. 1. The Controlled Vocabulary

    Directory of Open Access Journals (Sweden)

    Ana M. Martínez

    2009-12-01

    Full Text Available Se comparó la norma argentina de construcción de tesauros monolingües (IRAM 32057:1983 con las últimas ediciones de la norma internacional (ISO 2788:1986, las normas nacionales de España (UNE 50106:1990, Estados Unidos (Z39.19:2005 y Gran Bretaña (BSI 8723-2:2005b, así como diversos manuales reconocidos. Se analizaron tanto el alcance y los aspectos formales de la norma, como los conceptos referidos a la normativa sobre el vocabulario controlado. El alcance de la norma argentina se limita a la construcción de tesauros monolingües, mientras que las nuevas normas estadounidense y británica cubren también diferentes sistemas de organización del conocimiento. En relación con los aspectos formales, la norma argentina carece de tabla de contenido, índice analítico, glosario, bibliografía y algunas secciones y anexos, contando además con muy pocos ejemplos. En cuanto a los aspectos conceptuales, algunas definiciones son incorrectas o desactualizadas, lo mismo que algunas de las recomendaciones para el control del vocabulario. Se concluye que la norma argentina debería revisarse y actualizarse de conformidad con las normas publicadas recientemente y la norma ISO 25964 aún en preparación.The Argentine standard for the construction of monolingual thesaurus (IRAM 32057:1983 was compared with the last editions of the international standard (ISO 2788:1986, and the national standards of Spain (UNE 50106:1990, United States (Z39.19:2005, and Great Britain (BSI 8723-2:2005b, and very well known manuals. The scope and formal issues were analyzed, as well as the conceptual issues for controlled vocabulary. The scope of the Argentine standard is limited to the construction of monolingual thesauri, while the new North-American and British standards also cover different knowledge organization systems. In relation to the formal issues, the Argentine standard has not table of content, analytical index, glossary, bibliography and some sections and

  3. Molecular identification, morphological characterization and new insights into the ecology of larval Pseudoterranova cattani in fishes from the Argentine coast with its differentiation from the Antarctic species, P. decipiens sp. E (Nematoda: Anisakidae).

    Science.gov (United States)

    Timi, Juan T; Paoletti, Michela; Cimmaruta, Roberta; Lanfranchi, Ana L; Alarcos, Ana J; Garbin, Lucas; George-Nascimento, Mario; Rodríguez, Diego H; Giardino, Gisela V; Mattiucci, Simonetta

    2014-01-17

    Larvae of the genus Pseudoterranova constitute a risk for human health when ingested through raw or undercooked fish. They can provoke pseudoterranovosis in humans, a fish-borne zoonotic disease whose pathogenicity varies with the species involved, making their correct specific identification a necessary step in the knowledge of this zoonosis. Larvae of Pseudoterranova decipiens s.l. have been reported in several fish species from off the Argentine coasts; however, there are no studies dealing with their specific identification in this region. Here, a genetic identification and morphological characterization of larval Pseudoterranova spp. from three fish species sampled from Argentine waters and from Notothenia coriiceps from Antarctic waters was carried out. Larvae were sequenced for their genetic/molecular identification, including the mitochondrial cytochrome c oxidase subunit II (mtDNA cox2), the first (ITS-1) and the second (ITS-2) internal transcribed spacers of the nuclear ribosomal DNA, and compared with all species of the P. decipiens (sensu lato) species complex (sequences available in GenBank). Further, adults of Pseudoterranova spp. from the definitive host, the southern sea lion, Otaria flavescens, from Argentine and Chilean coasts were sequenced at the same genes. The sequences obtained at the ITS-1 and ITS-2 genes from all the larvae examined from fish of Argentine waters, as well as the adult worms, matched 100% the sequences for the species P. cattani. The sequences obtained at mtDNA cox2 gene for Antarctic larvae matched 99% those available in GenBank for the sibling P. decipiens sp. E. Both MP and BI phylogenetic trees strongly supported P. cattani and P. decipiens sp. E as two distinct phylogenetic lineages and depicted the species P. decipiens sp. E as sister taxon to the remaining taxa of the P. decipiens complex. Larval morphometry was similar between specimens of P. cattani from Argentina, but significantly different from those of P

  4. Effects of cigarette smoking on early arthritis: a cross-sectional study-data from the Argentine Consortium for Early Arthritis (CONAART).

    Science.gov (United States)

    Haye Salinas, María Jezabel; Retamozo, Soledad; Alvarez, Ana Cecilia; Maldonado Ficco, Hernán; Dal Pra, Fernando; Citera, Gustavo; Benegas, Mariana; Chaparro del Moral, Rafael; Rillo, Oscar; Secco, Anastasia; Marino Claverie, Lucila; Catalan Pellet, Antonio; Marcos, Josefina; García, Mercedes Argentina; Marcos, Juan Carlos; Barbaglia, Ana; Bellomio, Verónica; Berman, Alberto; Quiroz, Cristian; Soriano, Enrique R; Ceccato, Federico; Paira, Sergio; Vazquez, Doralia; Juarez, Vicente Ricardo; Velozo, Edson Javier; Salvatierra, Gabriela; Caeiro, Francisco

    2015-05-01

    Our objective was to analyze the effects of cigarette smoking on disease activity, functional capacity, radiographic damage, serology and presence of extraarticular manifestations in patients with rheumatoid arthritis and undifferentiated arthritis. This is a cross-sectional study of 1,305 patients (729 with rheumatoid arthritis and 576 with undifferentiated arthritis) from CONAART, the Argentine Consortium for Early Arthritis that includes patients older than 16 years with <2 years of disease. Sociodemographic data, clinical characteristics of the disease and smoking history were collected. In patients with rheumatoid arthritis the disease activity score of 28 joints was 5.4 ± 1.3 in current smokers, 5.2 ± 1.4 in former smokers and 5.1 ± 1.4 in never smokers (p = 0.011). The simple erosion narrowing score was higher in current smokers and former smokers than in never smokers (M 14.0, R Q 6.0-21.0; M 15.0, R Q 7.0-24.0; M 10.0, R Q 5.0-17.0; p = 0.006). Current smokers had higher rheumatoid factor titer (M 160.0, R Q 80.0-341.0) than former smokers (M 146.8, R Q 6.03-255.5) and never smokers (M 15.0, R Q 9.0-80.0) (p = 0.004). The variable independently associated with tobacco exposure was simple erosion narrowing score (OR = 1.03, 95 % CI 1.00-1.05; p = 0.012). In patients with undifferentiated arthritis, an association between smoking status and parameters of activity or radiographic damage was not observed. Neither was tobacco exposure related to the presence of extraarticular manifestations or to the degree of disability in any of the two groups of patients. No relation was found between disease activity and severity, and number of packs smoked per year. Tobacco.

  5. Argentine – Chili : Une si longue frontière Argentina – Chile: Such a long boundary Argentina – Chile: Una frontera tan larga

    Directory of Open Access Journals (Sweden)

    Sébastien Velut

    2009-10-01

    Full Text Available Cet article aborde l’intégration sud américaine à partir de l’examen de la très longue frontière entre le Chili et l’Argentine et de sa configuration matérielle. Son tracé, des traités internationaux au terrain, a été une opération compliquée étalée sur plus d’un siècle. La limite est recoupée par les grands itinéraires transcontinentaux, qui jouent un rôle majeur dans les projets politiques d’intégration sud américaine. Les dispositifs de passages, les réseaux urbains et routiersThis paper explores South American regional integration from the vantage point of the very long boundary between Chile and Argentina and is material configurations. The drawing of this very long border, from international treaties to field, was a complex operation lasting more than one century. The limit is intersected by transcontinental itineraries that play a major role in the political projects of South American integration. Crossing devices, urban and road networks and exchanges define regional units.Este artículo estudia la integración sur Americana a partir de la muy larga frontera entre Chile y Argentina y sus configuraciones materiales. El dibujo de la frontera, desde los tratados internacionales hasta el terreno, ha sido una operación compleja que se extendió por más de un siglo. El límite se encuentra recortado por los grandes ejes transcontinentales, que juegan un papel central en los proyectos políticos de integración sur-americana. Los dispositivos de intercambio, las redes urbanas y de caminos y los intercambios definen unidades regionales.

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

    Science.gov (United States)

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

    2016-03-01

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

  7. The effects of nitric oxide cooling and the photodissociation of molecular oxygen on the thermosphere/ionosphere system over the Argentine Islands

    Directory of Open Access Journals (Sweden)

    G. D. Wells

    Full Text Available In the past the global, fully coupled, time-dependent mathematical model of the Earth's thermosphere/ionosphere/plasmasphere (CTIP has been unable to reproduce accurately observed values of the maximum plasma frequency, foF2, at extreme geophysical locations such as the Argentine Islands during the summer solstice where the ionosphere remains in sunlight throughout the day. This is probably because the seasonal dependence of thermospheric cooling by 5.3 µm nitric oxide has been neglected and the photodissociation of O2 and heating rate calculations have been over-simplified. Now we have included an up-to-date calculation of the solar EUV and UV thermospheric heating rate, coupled with a new calculation of a diurnally varying O2 photodissociation rate, in the model. Seasonally dependent 5.3 µm nitric oxide cooling is also included. With these important improvements, it is found that model values of foF2 are in substantially better agreement with observation. The height of the F2-peak is reduced throughout the day, but remains within acceptable limits of values derived from observation, except at around 0600 h LT. We also carry out two studies of the sensitivity of the upper atmosphere to changes in the magnitude of nitric oxide cooling and photodissociation rates. We find that hmF2 increases with increased heating, whilst foF2 falls. The converse is true for an increase in the cooling rate. Similarly increasing the photodissociation rate increases both hmF2 and foF2. These changes are explained in terms of changes in the neutral temperature, composition and neutral wind.

  8. Modification of base-side {sup 99}MO production processes for LEU metal-foil targets.

    Energy Technology Data Exchange (ETDEWEB)

    Vandegrift, G. F.; Leonard, R. A.; Aase, S.; Sedlet, J.; Koma, Y.; Conner, C.; Clark, C. R.; Meyer, M. K.

    1999-09-30

    Argonne National Laboratory is cooperating with the National Atomic Energy Commission of the Argentine Republic (CNEA) to convert their {sup 99}Mo production process, which uses high enriched uranium (HEU), to low-enriched uranium (LEU), The program is multifaceted; however, discussed in this paper are (1) results of laboratory experiments to develop means for substituting LEU metal-foil targets into the current process and (2) preparation of uranium-alloy or uranium-metal/aluminum-dispersion targets. Although {sup 99}Mo production is a multi-step process, the first two steps (target dissolution and primary molybdenum recovery) are by far the most important in the conversion. Commonly, once molybdenum is separated from the bulk of the uranium, the remainder of the process need not be modified. Our results show that up to this point in our study, conversion of the CNEA process to LEU appears viable.

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

    Directory of Open Access Journals (Sweden)

    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.

  10. Riflessioni sulla formazione in servizio degli insegnanti nelle scuole italo-argentine della città e provincia di Córdoba / Considerations about the training of teachers in Italian-Argentine schools in the town and province of Córdoba

    Directory of Open Access Journals (Sweden)

    Luciana Zollo

    2014-12-01

    The bilingual and intercultural condition of Italian schools in Argentina represents a potential to the education of an active citizenship in today’s Latin American context. Italian literature, either as a way of expressing the social and historical aspects which strongly connect Argentine culture to the Italian one, or as a means towards literature education and the endorsement of the reading habit, can be proposed as a significant contribution to the validation of Italian intangible heritage. The role of Italian literature within the curricula is taken into consideration, as well as the educational proposals and projects and, particularly, the teachers’ training activities. The bilingual and bicultural curriculum of the schools in Córdoba City and Province, originated within communities strongly characterized by the history of Italian migrations in Argentina, constitutes the starting point for a reflection on didactics, the teachers’ profile and their entrusted tasks, the goals and methods of their inservice training. The complexity of the linguistic and socio-cultural identity of those who are protagonists in the experience of “making the Italian school” in Argentina offers multiple ideas with the purpose of arising both individual and social awareness of an Italian culture to be recognized, appreciated and reworked.

  11. Experience of the Argentine Radioprotection Society in training in radiological protection; Experiencia de la Sociedad Argentina de radioproteccion en capacitacion en proteccion radiologica

    Energy Technology Data Exchange (ETDEWEB)

    Bomben, A.M. [Sociedad Argentina de Radioproteccion (SAR), Av. del Libertador 8250 of. 122, (1429), Buenos Aires (Argentina)]. e-mail: abomben@sede.arn.gov.ar

    2006-07-01

    From its creation in 1967, the Argentine Radioprotection Society (SAR) has as basic purpose promoting all the aspects related with the radiological protection and the nuclear safety. Due to the great increment in the use of radioactive sources in diverse areas, soon it was evident for the SAR the importance and necessity to promote the knowledge of the radioprotection approaches between the users of radioactive sources and ionizing radiations in all its application fields, be these industrial, academic or doctors. From the year 2000, the SAR comes organizing in regular and periodical form basic and specialized courses about radiological safety of radioactive sources for industrial use and profile of oil wells, among others. In this work, the characteristics of the different dictated courses are described whose programs have been developed keeping in mind the requirements of the competent authorities of Argentina. Also, statistical information on the dictated courses and its participants is presented. The number of dictated courses was incremented from 6 (year 2000) up to 16 (year 2005), being also increased significantly the number of participants for course. The dictated courses are theoretical-practical, with a duration average of 20 hs. The educational body is constituted by specialists in the different topics with recognized experience. Its given to the participants notes and support material, as well as copies of the material presented to develop the course. When concluding the courses, its deliver to the participants certifies of attendance and/or approval, as it corresponds. In their headquarters the SAR has didactic facilities and specific equipment for the dictation of the courses. Also accounts with the easiness of dictating those courses outside of their headquarters. This is particularly advantageous for companies or organizations that are seated in points far from the main cities and they should qualify in radiological safety to the personnel but, by

  12. The severe zonda wind event of 11 July 2006 east of the Andes Cordillera (Argentine): a case study using the BRAMS model

    Science.gov (United States)

    Norte, Federico Augusto; Ulke, Ana Graciela; Simonelli, Silvia Carmen; Viale, Maximiliano

    2008-11-01

    The zonda is a wind that exhibits the so-called foehn effect: a warm, dry, strong wind related to adiabatic compression upon descending in the lee of the Andes. This phenomenon occurs mostly in winter and spring over the entire length of the extratropical Andes. It is frequently detected near the cities of Mendoza and San Juan, the most important urban regions of western Argentina. The aim of this work is to understand why a zonda wind event, occurring on 11 July 2006, reached and maintained the higher category Z4 during several hours. A secondary aim is to evaluate the ability of a Brazilian regional atmospheric modeling system (BRAMS) model to represent the features of this extreme episode and to explore if it can be used to predict a zonda event. The difference found with respect to other severe zonda wind episodes analyzed was that the wind registered the highest category (Z4) with extreme gusts during a long period. This condition was registered in particular on southern plain areas of San Juan province. The phenomenon had a great impact on the community, with residences and buildings being affected or destroyed, trees being felled, power supply and communications being shutdown, and several rural and urban fires being reported. The event was characterized through surface and upper-level information and model results. The synoptic surface and upper-air conditions were those typically associated with a severe zonda wind occurrence: a surface cold front approaching the region, driven by a 500 hPa trough, a strong upper-air jet stream, and a deep low-pressure surface system at higher latitudes over the Atlantic Ocean. The North West Argentine Low in central west Argentina during the following hours could be observed centered approximately at 31°S 66°W. in a few lower latitude than the location observed by National Center of Environmental Prediction (NCEP) reanalysis. On the other hand, it is the authors’ impression that the BRAMS model achieved an acceptable

  13. Encuadrando el delito: pánico moral en los periódicos Argentinos Framing crime: moral panic in Argentine newspapers

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    Natalia ARUGUETE

    2013-02-01

    Full Text Available El asalto a Carolina Píparo a la salida de un banco en la provincia de Buenos Aires, Argentina, estremeció a la opinión pública por tratarse de una víctima embarazada que, a raíz de un disparo recibido en el ataque, debió someterse a una cesárea después de la cual su hijo sobrevivió sólo una semana. Este trabajo analiza el tipo de tratamiento que recibió el llamado «caso Píparo» a través de un análisis de contenido exploratorio e inductivo de la cobertura que los diarios Clarín y La Nación dieron al tema. El objetivo es elaborar un libro de códigos que pueda ser validado en estudios de casos similares mediante el análisis de contenido de la prensa gráfica. Se busca aplicar la teoría del framing para, desde la detección de los encuadres noticiosos empleados, discutir si éstos son compatibles con el concepto de pánico moral planteado por Stanley Cohen.Carolina Píparo was shot a few minutes after withdrawing cash from a bank branch. This case outraged the public opinion because she was eight months pregnant at the moment of the assault. She had to undergo a caesarean section and her baby only survived one week. Through an exploratory and inductive research we will analyze how the Argentine newspapers presented the case. We aim at elaborating a content analysis code book that can be validated in future similar researches on the subject. We apply the Framing theory in order to detect the frames used in the news coverage and to observe if they are compatible with the idea of «moral panic» proposed by Stanley Cohen.

  14. Dictature, témoignage, histoire : paroles de victimes et de bourreaux dans les littératures argentine et chilienne (1983-2002

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    José García-Romeu

    2008-12-01

    Full Text Available Les dictatures militaires qui gouvernèrent le Chili et l’Argentine dans les années soixante-dix et quatre-vingt eurent un impact considérable sur les écrivains. Nous étudierons comment certains textes littéraires abordent la question à travers une reconstruction de la mémoire et de l’histoire, nationale ou familiale, en recourant au témoignage des victimes ou des bourreaux. Parfois l’auteur médiatise son expérience personnelle, d’autres fois il fabrique une fiction complexe et ambiguë. Cette étude nous permettra de distinguer à ce propos deux générations, la première soucieuse de résoudre les traumatismes propres (Daniel Moyano, Libro de navíos y borrascas, 1983 ; Juan Gelman, Interrupciones 2, 1988, la seconde engagée dans un réquisitoire envers les responsables de la répression (Roberto Bolaño, Nocturno de Chile, 2000 ; Martín Kohan, Dos veces junio, 2002.Las dictaduras militares que gobernaron en Chile y en Argentina durante los años setenta y ochenta tuvieron un impacto importante en los escritores. Estudiaremos cómo algunos textos literarios contemplan el problema mediante una reconstrucción de la memoria y de la historia, nacional o familiar, recurriendo al testimonio de las víctimas y de los verdugos. A veces, el autor representa su experiencia personal, otras fabrica una ficción compleja y ambigua. Este estudio nos ayudará a distinguir dos generaciones, la primera preocupada en resolver los traumas propios (Daniel Moyano, Libro de navíos y borrascas, 1983 ; Juan Gelman, Interrupciones 2, 1988, la segunda comprometida en acusar a los responsables de la represión (Roberto Bolaño, Nocturno de Chile, 2000 ; Martín Kohan, Dos veces junio, 2002.

  15. Pratiques alimentaires et (reconstruction identitaire chez des migrants boliviens de retour d’Argentine Foodways and identity (reconstruction among Bolivian migrants returning from Argentina

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    Charles-Édouard de Suremain

    2010-12-01

    Full Text Available L’étude anthropologique des pratiques alimentaires de migrants boliviens de retour ayant longuement séjourné en Argentine permet d’aborder la problématique de la migration et de l’identité : la construction sociale, réelle et imaginaire, de la migration ne passe-t-elle pas aussi par l’alimentation ? Ce que l’on mange ici et là-bas éclaire, en creux, le succès ou l’échec donné à la migration par les migrants et aide à comprendre plus finement les significations locales données à la pauvreté et à la richesse, au bien-être et au mal-être. L’observation et les « récits de vie alimentaires » menés dans une perspective intergénérationnelle – sur l’importance de la consommation attribuée au pain, à la viande et au soda– conduisent finalement à s’interroger sur la situation sociale et symbolique des migrants de retour dans leur société d’origine comme dans la société d’accueil. Au-delà, l’étude montre que les pratiques et les représentations alimentaires reflètent et structurent à la fois des relations sociales, des relations de sexe et des rapports au corps, et qu’elles permettent d’induire des processus de construction d’identités complexes.The anthropological study of Bolivian returnees’ food practices, who have spent a long time in Argentina, leads us to deal with the problematic of migration and identity: as a matter of fact, the social construction of migration, either real or imaginary, is also based on alimentation. What is eaten here and there enlightens, in a way, the success or failure of their migration, as perceived from the migrants’ point of view; it helps to deeply understand the local significations given to poverty and wealth, to well-being and discontent. Observation and « intergenerational food life stories », conducted on the importance of consumption of bread, meat and sodas, finally lead to question the social and symbolic situation of returnees

  16. Entre el "deber" y el "derecho": patrimonio arqueológico y obligaciones sociales en Patagonia Argentina Among "duty" and "rights": Archaeological heritage and social obligations in Argentine

    Directory of Open Access Journals (Sweden)

    Carolina Crespo

    2006-12-01

    actualized around this heritage, the change of meanings of these artefacts that such relationships motivate and the effects they produce on the management of the archaeological heritage. An analysis of the exchange of services and of the mutual obligations that arise serves as an example of the new meanings acquired by archaeological goods - especially rock art in Argentine Patagonia - in recent years, as well as the complexities of its management.

  17. Ensayo preclínico de la vacuna candid #1 producida en Argentina contra la Fiebre Hemorrágica Argentina Preclinical assay of Candid #1 vaccine against Argentine Hemorrhagic Fever made in Argentina

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    Ana M. Ambrosio

    2005-08-01

    Full Text Available Se comparó en cobayos la seguridad, inmunogenicidad y eficacia protectora de un lote de vacuna Candid #1(C#1 fabricada en Estados Unidos de América (EE.UU. y distintos lotes de la misma vacuna fabricados en Argentina (Arg. El lote TSI 5-1-92 (EE.UU. y los lotes Exp Nº 3, 7A y 8A (Arg fueron inoculados (0.5 ml, IM en cobayos de 250-400 g. Para cada ensayo diez animales recibieron solución fisiológica y sirvieron como control. Todos fueron desafiados con la cepa patógena P23790 de virus Junin. Se registró: a temperatura rectal, b peso corporal, c presencia de anticuerpos neutralizantes (AcNT pre y post-vacunación, d respuesta al desafío. Todos los animales vacunados desarrollaron AcNT anti virus Junin (rango = 40- 81920 y sobrevivieron al desafío. En cada grupo control 8/10 animales murieron (día 23.3 ± 5.4 post-desafío. Los cobayos resultaron idénticamente protegidos de una descarga letal de virus Junin por la vacuna importada y los diferentes lotes de C#1 producidos en Argentina.Candid #1 vaccine against Argentine Hemorrhagic Fever produced in USA versus lots of the same vaccine made in Argentina were compared in guinea pigs regarding safety, immunogenicity and protective efficacy against a challenge with pathogenic Junin virus. Lots Nº Exp 3, 7A and 8A of Argentine origin as well as lot TSI 5-1-92 from USA were inoculated in guinea pigs of 250-400 g in two consecutive assays. Ten animals inoculated with saline performed as normal controls in each experiment. Parameters studied were: a temperature; b body weight; c neutralizing antibodies to Junin virus; d response to viral challenge. Animals gained weight and remained normothermic up to the challenge. Guinea pigs that received Candid #1 from any manufacturer elicited neutralizing antibodies to Junin virus (titles from 40 to 81920 and survived to challenge whilst 8/10 animals died in each control group. Data presented demonstrated that Candid #1 vaccines from USA or Argentine

  18. L’Argentina dall’impunità alla verità, giustizia e memorializzazione delle violazioni dei diritti umani / Argentine from the impunity to the truth, justice and memorialisation of humain rights violations

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    Gennaro Carotenuto

    2015-01-01

    The presidency of Néstor Kirchner (2003-2007 in Argentina marks a before and an after in the history of transitional justice in the world. He arrived in the Casa Rosada after the financial default of 2001. Kirchner builds its legitimacy on the basis of latinoamericanism, the criticism of the neoliberal model and the defense of human rights. After the initial rush of Raúl Alfonsín, who processed the heads of the dictatorship after the defeat of the Falklands/Malvinas war, impunity in Argentina characterized the following twenty years. Within a few weeks impunity laws were erased. This, not only opens the doors to justice for the 30,000 disappeared people of the last dictatorship (1976-1983, but marks a real change of hegemony in which human rights become state policy and a sort of a new civil religion of the Argentine state.

  19. Visions of Thomas Jefferson Page, U.S. Navy Commander, through South America: maritime culture and the imperial discourse in the narrative of exploration, “La Plata, The Argentine Confederation and Paraguay (1853 - 1860”

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    Marília Arantes Silva Moreira

    2014-07-01

    Full Text Available The objective of this article is to observe the visions, images and judgments made by the southerner U.S. Navy Commander, Thomas Jefferson Page, through the expedition made in countries of South America, according to his narrative of exploration, “La Plata, The Argentine Confederation and Paraguay (1853-1860”. Predominantly, it analyses the author’s constructed visions over the Paraguayan President, Carlos Antonio López, besides those of the Argentinean President, Justo José de Urquiza. While Page, in one hand, indicted López’s “protectionist” policy on the river navigation in Paraguay, in the other, he intended to flatter the Argentinean Urquiza, as far as he maintained the “international” river navigation liberated under his dominium.

  20. SIG Y TELEDETECCIÓN EN INVESTIGACIONES ARQUEOLÓGICAS DEL CHACO ARGENTINO (GIS and Remote Sensing in the Archaeological Research of the Argentine Chaco

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    Guillermo N. Lamenza

    2015-09-01

    ², and is located in the central-south portion of the continent. Specifically, the Argentine territory of the Gran Chaco stretches from the Pilcomayo River to about –30º latitude, including the provinces of Chaco, Formosa, Santiago del Estero, and partly Salta, Jujuy, Tucuman, La Rioja, Catamarca, San Juan, San Luis, Cordoba, Santa Fe, and Corrientes. The results of the latest archaeological research oriented to the location of prehistoric human settlement and its relationship with the landscape are presented. We proceeded to use Geographic Information Systems (GIS, digital image processing, and remote sensing for the systematization and creation of new information. As a result, an algorithm that integrates archaeological thematic maps and allows for differential potential areas for locating archaeological sites was obtained. This contribution results in an improvement in the regional archaeological research, creating heritage value and, in turn, optimizes the survey of archaeological sites.

  1. Distribución de Lutzomyia longipalpis en la Mesopotamia Argentina, 2010 Distribution of Lutzomyia longipalpis in the Argentine Mesopotamia, 2010

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    Oscar D. Salomón

    2011-02-01

    vector had been previously reported, traps with more samples were obtained with 830 and 126 Lu. Longipalpis trap/site/night respectively. These results show that the vector of urban VL continues spreading in the Argentine territory. Simultaneously, the spread of the parasite and the resulting human VL cases are associated with the dispersion of reservoirs, infected dogs, with or without clinical symptoms or signs, due to human transit.

  2. Capture efficiency for small dominant mesozooplankters (Copepoda, Appendicularia off Buenos Aires Province (34ºS-41ºS, Argentine Sea, using two plankton mesh sizes

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    Rosana Di Mauro

    2009-09-01

    Full Text Available Two plankton mesh sizes of 67 µm and 220 µm were compared to evaluate their efficiency in the capture of the smallest copepods and appendicularians present in the Buenos Aires coastal area (Argentine Sea. A total of 12 copepod species and one appendicularian species were recorded in this study. The copepods were separated into 4 groups: harpacticoids, cyclopoids, small calanoids and large calanoids and their developmental stages. Among the cyclopoids, Oithona nana was the most abundant species, being 96.29 % underestimated by the 220 µm mesh, whereas Microsetella norvegica dominated the harpacticoids and was captured exclusively by the smaller mesh. Similar results were found for copepodites I-III of small calanoids, whose net sampled underestimation reached 99.70%. On the other hand, no significant difference between meshes was found for adults and copepodites IV-V of small calanoids or any of the developmental stages of large calanoids. A great loss of biomass was observed for O. nana when applying the larger mesh. In regards to the appendicularian Oikopleura dioica, all size ranges below 1,000 µm length were better estimated by the 67 µm mesh in terms of abundance and biomass. Our results clearly show that the 67 µm mesh was more efficient in the capture of early stages of small copepods thus providing a more accurate estimation of the fish larvae prey field.Compararam-se os copépodos e apendiculárias coletados, na zona costeira do Estado de Buenos Aires (Argentina, com duas redes de plâncton, tipo mini-bongo, de abertura de malha de 67 µm e 220 µm. Registraram-se 12 espécies de copépodos e uma de apendiculária. Os copépodos foram separados de acordo com as categorias: harpaticoides, ciclopoides, e calanoides pequenos e grandes. O cálculo da abundância de Oithona nana, que foi a espécie mais abundante no material analizado, demonstrou que a coleta com rede de 220 µm teve uma subestimativa de 92,29%, em relação à coleta

  3. Influence of alternating air injection on the color and “alambrado” of natural black olives cv. Arauco, as compared with the traditional Argentine method

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    Juarez Romero, J. A.

    2015-06-01

    Full Text Available Ripe black olives cv. Arauco were processed under different conditions to evaluate the effects of alternating air injection (AI on the color of olives and on spoilage known as “alambrado”, using a system based on the one patented by the “Instituto de la Grasa” (Sevilla, Spain, as compared with the traditional Argentine processing method, which consists of drying the olives in natural air (“extendido” for 24 hours at 7, 14 and 21 days of fermentation. Four types of fermentation were used: brine at 2% NaCl plus AI; brine at 2% NaCl plus three “extendidos”; brine at 9% NaCl plus three “extendidos”; and brine at 9% NaCl plus AI and one “extendido”. As previously observed in other varieties by other authors, we noticed that lower pH values were achieved in 2% NaCl fermentations vs. 9% NaCl fermentations. AI prevented the “alambrado” whereas brine at 2% NaCl reduced this spoilage as compared with brine at 9% NaCl. The darkest color of olives was obtained with three “extendidos”, but 83% of brightness reduction was achieved with only one “extendido”. The “extendido” process decreased the texture. We conclude that the combination of AI and “extendido” can add benefits to natural black olives of the Arauco variety.Se elaboraron aceitunas negras maduras variedad Arauco en distintas condiciones para evaluar la inyección alternante de aire (IA con un sistema basado en el patentado por el Instituto de la Grasa, en comparación con la elaboración tradicional argentina donde se realiza exposición al aire en seco (“extendido” de los frutos durante 24 h, en tres momentos de la fermentación (después de 7, 14 y 21 días. Se hicieron cuatro tipos de fermentaciones: en salmuera al 2% con IA; en salmuera al 2% y 9% con tres “extendidos” y salmuera 9% con IA y un “extendido”. Se alcanzaron los valores mas bajos de pH en fermentaciones con el 2% de NaCl versus las de 9%. La IA evita el defecto de

  4. ETNOGRAFÍA ARGENTINA: LA CÁTEDRA LIBRE DE MONSEÑOR PABLO CABRERA (1925 / Argentine Ethnography: Monsignor Pablo Cabrera’s free lecture (1925

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    Mariela Eleonora Zabala

    2010-12-01

    the Catholic and conservative personnel from the leading and teaching positions and from the administration, and to ensure access of the “most capable and dignified” professors to the University, in the name of capacity, justice and freedom. This paper explores a direct effect of such initiatives which seem to oppose such goals: the launching of the first free course of Argentine Ethnography by Prior (Monseñor Pablo Cabrera (1857-1936 in 1925. Cabrera, its main professor, was a member of the Catholic Church of Córdoba and of the National Academy of Sciences, the director of the Provincial Historical Museum, and the author of myriad books and articles on Revista de la Universidad and the newspaper Los Principios. ¿Why and how a man of the Church launched this innovation in the anti-clerical context of the University Reform? How did his confessional adscription affect Cabrera’s work in a secular institution and conversely how did his academic stance impinge on his priestly activities? In sum, how could these two realms coexist within the single mind of a man acknowledged as the predecessor of Cordobesa anthropology? Keywords: University reform; teaching; Anthropology; Pablo Cabrera; Córdoba; Argentina. 

  5. EL MOVIMIENTO INSTITUCIONALIZADO: DANZAS FOLKLÓRICAS ARGENTINAS, LA PROFESIONALIZACIÓN DE SU ENSEÑANZA / Institutionalized movement: professional education of argentine folk dances

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    María Belén Hirose

    2010-12-01

    Full Text Available En 1948 se creó la Escuela Nacional de Danzas Folklóricas, como parte del Plan Quinquenal del primer gobierno de Juan D. Perón (1946-1952. Así se dio inicio a la profesionalización de la transmisión y difusión de las danzas folklóricas en su carácter de danzas nacionales, tarea que quedaría concretada con la formación de un cuerpo de profesores nacionales de danza. Este proceso suponía el establecimiento de criterios de selección y transformación de aquellas danzas que se consideraran adecuadas para dar materialidad, mediante coreografías, música, vestimenta y eventos, al sentimiento de la nacionalidad. El folklore académico, en pleno proceso de consolidación como disciplina científica, fue también funcional al proyecto nacional, proveyendo los criterios para la creación del repertorio de danzas que sería enseñado en Buenos Aires y transportado luego a las provincias.En este artículo nos proponemos describir el desarrollo histórico que posibilitó la institucionalización de la enseñanza de las danzas folklóricas en la Argentina, y los efectos de dicha institucionalización. Exploramos el rol que diversos grupos o individuos pertenecientes al ámbito político, cultural y/o académico, asignaron a la enseñanza de las danzas folklóricas en las diferentes etapas del proceso de construcción y fortalecimiento del estado-nación argentino.Palabras clave: danza; folklore; Argentina; docencia; peronismoAbstractIn 1948 Argentina’s National School of Folkloric Dances was created as a part of Juan D. Peron’s “Quinquennial Plan”, launched during his first administration. Thus, the transmission and diffusion of folkloric dances as national symbols began to be professionalized, the development of which was accomplish by the instruction of a troupe of national dance teachers. This process required a repertoire based on the selection and transformation of those dances considered to be adequate expressions of Argentine

  6. Detección de Neospora caninum en fetos bovinos abortados espontáneamente en el nordeste argentino Neospora caninum detection in spontaneously aborted bovine fetuses from Argentine northeast

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    W.J. Lertora

    2010-12-01

    Full Text Available El objetivo del presente trabajo fue detectar Neospora caninum en neonatos y fetos bovinos de abortos espontáneos del nordeste argentino. Sobre un total de 26 fetos bovinos abortados espontáneamente (23 de cría y 3 de tambo se detectaron lesiones histopatológicas compatibles con neosporosis en 4 de ellos. La presencia de Neospora caninum fue confirmada mediante inmunohistoquímica en el encéfalo de 3/4 fetos (2 de cría y 1 de tambo con lesiones microscópicas compatibles con neosporosis. Las lesiones histopatológicas más relevantes fueron la asociación de encefalitis, miocarditis y hepatitis no purulenta multifocales. De 10 neonatos bovinos procesados (8 de cría y 2 de tambo, no se detectaron animales con lesiones compatibles con neosporosis. Este trabajo confirma la presencia de Neospora caninum en fetos abortados espontáneamente en bovinos de rodeos de cría y de tambo del nordeste argentino.The aim of this work was to detect the presence of Neospora caninum in bovine neonates and bovine spontaneous abortions from Argentine northeast. Histopathological lesions compatible with neosporosis were found in 4 of 26 bovine spontaneous abortions (23 beef herds and 3 dairy herds. The Neospora caninum presence was confirmed with immunohistochemical analysis in encephalic tissue in 3 of 4 fetuses (2 beef herds and 1 dairy herd that displayed microscopical lesions of neosporosis. Multifocal non-purulent encephalitis, myocarditis and hepatitis were the most relevant lesions. There were no lesions of neosporosis in 10 bovine neonates (8 beef herds and 2 dairy herds. This work confirms the presence of Neospora caninum in spontaneous bovine abortions of beef herds and dairy herds of the Argentine northeast.

  7. Computer simulation of the behaviour and performance of a CANDU fuel rod

    Energy Technology Data Exchange (ETDEWEB)

    Marino, A.C. [Comison Nacional de Energia Atomica (Argentina)

    1997-07-01

    At the Argentine Atomic Energy Commission (Comision Nacional de Energia Atomica, CNEA) the BACO code (for 'BArra COmbustible', fuel rod) was developed. It allows the simulation of the thermo-mechanical performance of a cylindrical fuel rod in a Pressurized Heavy Water Reactor (PHWR). The standard present version of the code (2.30), is a powerful tool for a relatively easy and complete evaluation of fuel behaviour predictions. Input parameters and, therefore, output ones may include statistical dispersion. As a demonstration of BACO capabilities we include a review of CANDU fuel applications, and the calculation and a parametric analysis of a characteristic CANDU fuel. (author)

  8. Design of a beam shaping assembly and preliminary modelling of a treatment room for accelerator-based BNCT at CNEA

    Energy Technology Data Exchange (ETDEWEB)

    Burlon, A.A.; Girola, S. [Gerencia de Investigacion y Aplicaciones, Comision Nacional de Energia Atomica, San Martin (Argentina)] [Escuela de Ciencia y Tecnologia, Universidad Nacional de San Martin, San Martin (Argentina); Valda, A.A., E-mail: valda@tandar.cnea.gov.ar [Gerencia de Investigacion y Aplicaciones, Comision Nacional de Energia Atomica, San Martin (Argentina)] [Escuela de Ciencia y Tecnologia, Universidad Nacional de San Martin, San Martin (Argentina); Minsky, D.M.; Kreiner, A.J. [Gerencia de Investigacion y Aplicaciones, Comision Nacional de Energia Atomica, San Martin (Argentina)] [Escuela de Ciencia y Tecnologia, Universidad Nacional de San Martin, San Martin (Argentina)] [CONICET, Buenos Aires (Argentina); Sanchez, G. [Escuela de Ciencia y Tecnologia, Universidad Nacional de San Martin, San Martin (Argentina)

    2011-12-15

    This work reports on the characterisation of a neutron beam shaping assembly (BSA) prototype and on the preliminary modelling of a treatment room for BNCT within the framework of a research programme for the development and construction of an accelerator-based BNCT irradiation facility in Buenos Aires, Argentina. The BSA prototype constructed has been characterised by means of MCNP simulations as well as a set of experimental measurements performed at the Tandar accelerator at the National Atomic Energy Commission of Argentina. - Highlights: Black-Right-Pointing-Pointer Characterisation of a neutron beam shaping assembly for accelerator-based BNCT. Black-Right-Pointing-Pointer Measurements: total and epi-cadmium neutron fluxes and beam homogeneity. Black-Right-Pointing-Pointer Calculations: Monte Carlo simulations with the MCNP code. Black-Right-Pointing-Pointer Measured and calculated figure-of-merit parameters in agreement with those of IAEA. Black-Right-Pointing-Pointer Initial MCNP dose calculations for a treatment room to define future design actions.

  9. Anatomical and physiological characteristics of two argentine wheat cultivars Características anatômicas e fisiológicas de dois cultivares argentinos de trigo

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    Raúl Roberto Filgueira

    2003-08-01

    Full Text Available Two Argentine field grown wheat cultivars (Triticum aestivum L., Buck Cencerro (BC with traditional germoplasm, and Buck Pucará (BP with Mexican germoplasm, have been investigated in order to compare anatomical and physiological characteristics of the flag leaf measured in heading (stage E59, anthesis (stage E69 and kernel water ripe (stage 71. In both cultivars, photosynthetic rate was not different for the same phenological stage, except for E71. Averages in stage E59 were higher than stages E69 and E71 for both cultivars (22.70, 18.40 and 10.40 µmol m-2 s-1 for BP and 23.82, 18.41 and 8.28 µmol m-2 s-1 for BC, respectively. Transpiration rates were higher in BP (5.0, 5.6 and 4.89 mmol m-2 s-1 than BC (3.3, 4.4 and 2.57 mmol m-2 s-1 for stages E59, E69 and E71, respectively. Consequently, instantaneous water use efficiencies were higher in BC than in BP. No difference between cultivars and phenological stages was observed in specific surface area (mesophyll area per unit mass determined by physical adsorption of nitrogen at low temperature (78° K; the mean was 8.9 m² g-1. It was similar as values found in previous works, in others T. aestivum L. and greater than the values found for Ligustrum lucidum Aiton, by the same technique. Differences could be attributed to the roughness of the cell wall and the dimensions of the cell itself. No positive correlation between specific surface and photosynthetic rate was observed neither for cultivars nor for phenological stages.Dois cultivares argentinos de trigo (Triticum aestivium L, Buck Cencerro (BC, com germoplasma tradicional e Buck Pucará (BP, com germoplasma mexicano, foram pesquisados para comparar as características anatômicas e fisiológicas da folha bandeira medida no espigamento (estádio E59, na antese (estádio E69 e na fase de grão aquoso completo (estádio E71. Nos dois cultivares, a taxa fotossintética foi semelhante no mesmo estágio fenológico, exceto no E71. As médias no

  10. [First Argentine consensus guidelines for in vitro antimicrobial susceptibility testing of clinically relevant anaerobic bacteria in humans/ Anaerobic Subcommittee of the Asociación Argentina de Microbiología].

    Science.gov (United States)

    Legaria, María C; Bianchini, Hebe M; Castello, Liliana; Carloni, Graciela; Di Martino, Ana; Fernández Canigia, Liliana; Litterio, Mirta; Rollet, Raquel; Rossetti, Adelaida; Predari, Silvia C

    2011-01-01

    Through time, anaerobic bacteria have shown good susceptibility to clinically useful antianaerobic agents. Nevertheless, the antimicrobial resistance profile of most of the anaerobic species related to severe infections in humans has been modified in the last years and different kinds of resistance to the most active agents have emerged, making their effectiveness less predictable. With the aim of finding an answer and for the purpose of facilitating the detection of anaerobic antimicrobial resistance, the Anaerobic Subcommittee of the Asociación Argentina de Microbiología developed the First Argentine consensus guidelines for in vitro antimicrobial susceptibility testing of clinically relevant anaerobic bacteria in humans. This document resulted from the compatibilization of the Clinical and Laboratory Standards Institute recommendations, the international literature and the work and experience of the Subcommittee. The Consensus document provides a brief taxonomy review, and exposes why and when anaerobic antimicrobial susceptibility tests should be conducted, and which antimicrobial agents can be used according to the species involved. The recommendations on how to perform, read and interpret in vitro anaerobic antimicrobial susceptibility tests with each method are exposed. Finally, the antibiotic susceptibility profile, the classification of antibiotics according to their in vitro activities, the natural and acquired mechanisms of resistance, the emerging resistance and the regional antibiotic resistance profile of clinically relevant anaerobic species are shown.

  11. Fsiles de novela: paleontologa y literatura en la argentina de fines del siglo XIX y principios del siglo Fossils as fictional characters: Argentine paleontology and literature in the late 19th century and the beginnings of the 20th century

    Directory of Open Access Journals (Sweden)

    Eduardo G. Ottone

    2011-09-01

    Full Text Available La literatura argentina de la segunda mitad del siglo XIX y comienzos del siglo XX refiri la presencia de mamferos fsiles cenozoicos en las pampas. Gliptodontes y megaterios devinieron en personajes de los textos de Eduardo Ladislao Holmberg, William Henry Hudson, Eduarda y Lucio Victorio Mansilla, Leopoldo Lugones, Geoffroy Franois Daireux, Horacio Quiroga, Hugo Wast, Ezequiel Martnez Estrada, Leopoldo Marechal y Manuel Mujica Lainez. Estos autores contextualizaron a los vertebrados fsiles en escenas humorsticas o realistas, como iconos de la grandeza de la Pampa y la nacin o parodia de estereotipos culturales locales.Argentine literature from the second half of the 19th century and the early 20th century referred to the presence of Cenozoic fossil mammals in the pampas. Glyptodons and megatheriums became characters in the texts of Eduardo Ladislao Holmberg, William Henry Hudson, Eduarda y Lucio Victorio Mansilla, Leopoldo Lugones, Geoffroy Franois Daireux, Horacio Quiroga, Hugo Wast, Ezequiel Martnez Estrada, Leopoldo Marechal and Manuel Mujica Lainez. These authors contextualize the fossil vertebrates in humoristic or realistic scenes, as icons of the greatness of the nation and the Pampa, or as a parody of local cultural stereotypes.

  12. Mutación fundadora en una familia argentina con cáncer colorrectal hereditario Detection of a founder mutation in an Argentine family with hereditary non polyposis colorectal cancer

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    Laura Gómez

    2010-02-01

    Full Text Available El cáncer colorrectal hereditario no poliposo (CCHNP se relaciona con mutaciones en los genes reparadores de ADN (MLH1, MSH2 y MSH6. La mayoría de estas alteraciones son familia-específicas y su detección suele requerir la secuenciación completa de los genes relacionados. Se detectó una mutación puntual (2269-2270insT en el último codón del gen MLH1 en familias de un área del norte de Italia (Reggio Emilia y su origen se considera debido a un efecto fundador. En este trabajo presentamos una familia mendocina con CCHNP portadora de la misma mutación, cuyos ancestros eran oriundos de Reggio Emilia. Para la detección de la mutación se diseñó una estrategia basada en PCR y posterior corte enzimático. La mutación fue hallada en tres integrantes de la familia estudiada, dos de los cuales no presentaban sintomatología clínica. Estos pacientes fueron seguidos preventivamente mediante colonoscopias. La metodología utilizada en nuestro laboratorio fue específica y sensible para la detección de una mutación previamente registrada y permitió realizar el diagnóstico genético molecular en el país, evitando el envío de muestras al extranjero. Es de importancia destacar que el diagnóstico genético pre-sintomático de cáncer hereditario, enfocado desde un grupo multidisciplinario de profesionales, permite un mejor seguimiento y apoyo a las familias afectadas.Hereditary non polyposis colorectal cancer (HNPCC has been related to mutations in the DNA mismatch repair genes (MLH1, MSH2 y MSH6. Mutation detection analysis requires the complete sequencing of these genes, given the high frequency of family-specific alterations. A point mutation (2269- 2270insT in the last codon of the MLH1 gene has been detected in families from a northern region of Italy (Reggio Emilia.Given that this alteration was registered only in people from this region, it has been considered a founder mutation. In this work, we present an Argentine HNPCC family

  13. Entre práticas judiciárias brasileiras e porteñas: percepções acerca da oralidade processual argentina Between brazilian and argentine judicial practices: perceptions of oral proceedings in Argentina

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    Bárbara Gomes Lupetti Baptista

    2011-07-01

    general, la presidencia de las audiencias es delegada a los funcionarios del juzgado. Este trabajo se propone a presentar, junto con las descripciones, algunas preguntas acerca de la administración de los conflictos en Buenos Aires.This paper aims to understand, from the description of practices observed in the criminal and civil judicial courts in the Capital of Argentina, the meaning and the percepction about the legal oral proceedings. The objective of empirical research that I realized was to look at oral manifestations that can occur in the argentine courts from a brazilian perception. In Argentine's capital city, the legal discourse produced about of the orality is links exclusively to Criminal Justice. However, the ethnography shows that there are oral manifestations also at Civil Justice level. Empirical data suggest that the restriction of the study of orality at the criminal trials is linked the presence of the judge, that in criminal trials is obligatory, but in the civil trials isn´t it, already as in these cases is delegated to civil servents. This paper intends to present, together with descriptions, some questions about the jurisdiction in Buenos Aires.

  14. El poshumanismo apocalíptico en la novela negra argentina contemporánea: Ciudad santa y 77 Apocalyptic Posthumanism in Contemporary Argentine Hardboiled: Ciudad santa and 77

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    Osvaldo Di Paolo

    2012-01-01

    Full Text Available El fin del mundo es un arquetipo milenario, el cual se ha acentuado en tiempos recientes. La obsesión actual con la destrucción del planeta también se evidencia en el género negro. Gran parte de la novela negra hispanoamericana del siglo XXI presenta una visión poshumanista y apocalíptica que revela la descentralización del individuo y manifiesta el caos, el miedo y el enfrentamiento de fuerzas opuestas que conllevan a la destrucción del género humano. Para demostrar mi tesis analizo dos novelas argentinas y ganadoras del Premio Hammett: Ciudad santa (2010 de Guillermo Orsi y 77 (2009 de Guillermo Saccomanno. De cada texto, presento un resumen general, extraigo las particularidades estructurales de la novela negra y revelo la tendencia poshumanista y apocalíptica inherente a los mismos, junto con sus implicaciones sociales.The end of the world is a millennial archetype, which has become quite popular in recent times. The current obsession with the destruction of the planet is also present in hard-boiled literature. A great number of the XXI Century hard-boiled genre presents a posthumanist and apocalyptic view that reveals the decentralization of man and manifests chaos, fear, and the clash of opposite forces that lead to the destruction of the human race. In order to prove my thesis, I analyze two argentine novels, winners of the Hammett award,: Ciudad santa (2010 by Guillermo Orsi and 77 (2009 by Guillermo Saccomanno. From each text, I present a summary of the story, draw the structural characteristics of the hard-boiled, and reveal the posthuman and apocalyptic tendencies in the novels, along with the social implications they convey.

  15. Wild Bulls, Discarded Foreigners, and Brash Champions: US Empire and the Cultural Constructions of Argentine Boxers Toros salvajes, extranjeros descartados y campeones insolentes: Estados Unidos y la construcción cultural de los boxeadores argentinos

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    David Shenin

    2008-09-01

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    With the exception of Hollywood films, there has been no more intense point of cultural contact between Argentina and the United States than boxing. This article considers two intertwined topics. The first is the construction of the imagery of Argentine boxers in the United States and the varieties of Argentine boxers’ immigrant experience in North America. Second, this article will argue that the presence of Argentine boxers in the United States forged a sense in Argentina that the former were leading actors on the American boxing scene. This, in turn, shaped Argentine boxing cultures and self images.

  1. Education and training in radiological protection in the Argentine region- IAEA, toward a long term commitment; Educacion y entrenamiento en proteccion radiologica en la region Argentina- OIEA, hacia un compromiso de largo plazo

    Energy Technology Data Exchange (ETDEWEB)

    Terrado, C.; Arbor G, A.; Bozzo, R.; Larcher, A.; Menossi, C.; Sajaroff, P. [Autoridad Regulatoria Nuclear, Libertador 8250, Buenos Aires (Argentina)]. e-mail: cterrado@sede.arn.gov.ar

    2006-07-01

    The Argentine Republic has extensive antecedents in education and training in radiological protection. From the beginning of the nuclear activity in the country was given preponderance to the aspects related with the radiological protection and the personnel's training involved in the employment of ionizing radiations. At the present time these educational activities already overcome the 50 years, there being accumulated a rich and important experience in the matter. In the country the organisms that have assigned by law the responsibility of the regulation and the control of practice them with ionizing radiations are the Nuclear Regulatory Authority and the Ministry of Health and Atmosphere of the Nation. The first one has the mission of protecting people of the noxious effects of the ionizing radiations derived of nuclear activities, the second is in charge of the control of the equipment dedicated specifically to generate X-rays. This includes the responsibility of elaborating, to emit and to make complete the regulations, standards and other corresponding requirements, in particular - in the mark of the present work - regarding to establish demands and to promote education activities and training in radiological protection. The sure use of the benefits that offers the nuclear development in its diverse applications implies to overturn resources, experience and dedication for the personnel's training. In that sense the Argentina has committed recently to undertake the necessary actions to constitute a Regional Center of Education and Training for Latin America and the Caribbean, taking advantage of the important experience obtained in more of 25 years of imparting graduate degree courses in radiological protection and nuclear safety with inter regional and regional character. With that purpose a process of self evaluation has begun (self appraisal), following the limits settled down by the International Atomic Energy Agency in the document &apos

  2. Absence of an N-Linked Glycosylation Motif in the Glycoprotein of the Live-Attenuated Argentine Hemorrhagic Fever Vaccine, Candid #1, Results in Its Improper Processing, and Reduced Surface Expression

    Science.gov (United States)

    Manning, John T.; Seregin, Alexey V.; Yun, Nadezhda E.; Koma, Takaaki; Huang, Cheng; Barral, José; de la Torre, Juan C.; Paessler, Slobodan

    2017-01-01

    Junin virus (JUNV), a highly pathogenic New World arenavirus, is the causative agent of Argentine hemorrhagic fever (AHF). The live-attenuated Candid #1 (Can) strain currently serves as a vaccine for at-risk populations. We have previously shown that the Can glycoprotein (GPC) gene is the primary gene responsible for attenuation in a guinea pig model of AHF. However, the mechanisms through which the GPC contributes to the attenuation of the Can strain remain unknown. A more complete understanding of the mechanisms underlying the attenuation and immunogenicity of the Can strain will potentially allow for the rational design of additional safe and novel vaccines. Here, we provide a detailed comparison of both RNA and protein expression profiles between both inter- and intra-segment chimeric JUNV recombinant clones expressing combinations of genes from the Can strain and the pathogenic Romero (Rom) strain. The recombinant viruses that express Can GPC, which were shown to be attenuated in guinea pigs, displayed different RNA levels and GPC processing patterns as determined by Northern and Western blot analyses, respectively. Analysis of recombinant viruses containing amino acid substitutions selected at different mouse brain passages during the generation of Can revealed that altered Can GPC processing was primarily due to the T168A substitution within G1, which eliminates an N-linked glycosylation motif. Incorporation of the T168A substitution in the Rom GPC resulted in a Can-like processing pattern of Rom GPC. In addition, JUNV GPCs containing T168A substitution were retained within the endoplasmic reticulum (ER) and displayed significantly lower cell surface expression than wild-type Rom GPC. Interestingly, the reversion A168T in Can GPC significantly increased GPC expression at the cell surface. Our results demonstrate that recombinant JUNV (rJUNV) expressing Can GPC display markedly different protein expression and elevated genomic RNA expression when compared to

  3. Hummocky cross-stratification-like structures and combined-flow ripples in the Punta Negra Formation (Lower-Middle Devonian, Argentine Precordillera): A turbiditic deep-water or storm-dominated prodelta inner-shelf system?

    Science.gov (United States)

    Basilici, Giorgio; de Luca, Pedro Henrique Vieira; Poiré, Daniel G.

    2012-08-01

    Turbidity-current and storm-induced deposits may exhibit similarities, in particularly when the latter is laid down by a combination of oscillatory and unidirectional flows. Recent progress in facies analysis helps to discriminate the sedimentary effects of oscillatory from unidirectional components of the flow. On the basis of detailed analysis of sedimentary facies, strata geometry, and palaeocurrent data, the present study reinterprets the Punta Negra Formation (PNF) (Lower-Middle Devonian, Argentine Precordillera), previously considered as a depositional system of deep-water, as a storm-dominated prodeltaic shelf depositional system. In the sandstone beds of the PNF, planar, low-angle and undulating laminations with weakly asymmetric hummocky and swaley bedforms, combined-flow ripples, accretionary hummocky cross-stratification-like (HCS-like), and anisotropic HCS-like suggest the action of oscillatory currents combined with unidirectional currents in forming the deposits. Different hypotheses on the origin of the oscillatory currents have been examined. The most convincing interpretation is that the oscillatory component of the velocity is attributed to storm-induced waves. The palaeocurrent data indicate offshore current directions, suggesting that the unidirectional flow was a gravity-induced bottom current. Inverse grading at the base and overlying normally graded divisions of the sandstone beds testify to waxing-waning behaviour of the depositional flows; interbedding of sedimentary structures (undulating laminations, low-angle and parallel laminations, and combined-flow ripples) in the lower and intermediate divisions of the beds indicate fluctuations of flow velocity. This organisation of the sedimentary structures permits association of the unidirectional component with hyperpycnal bottom currents. The terrestrial origin of the hyperpycnal flows is suggested by the abundance of terrestrial plant remains, the mineralogical and textural immaturity of the

  4. Nacionalismo, peronismo, comunismo: Los usos del totalitarismo en el discurso del Partido Socialista Argentino (1946-1953 Nacionalism, Peronism, Comunism: The uses of totalitarism in argentine Partido Socialista discourse (1946-1953

    Directory of Open Access Journals (Sweden)

    Ricardo Martínez Mazzola

    2011-06-01

    Full Text Available Este artículo explora la prensa y las producciones de los dirigentes del Partido Socialista argentino con el objeto de dar cuenta de una de las líneas principales de su prédica: la representada por los distintos usos del término "totalitarismo". Se reconstruye cómo el uso del discurso "antitotalitario" permitió a la dirigencia del partido no sólo condenar, por su asociación con las experiencias europeas, al régimen nacido de la revolución del '43 y al gobierno peronista, sino también cuestionar, por su cercanía con el peronismo, a los comunistas y a los miembros del ala izquierda del mismo Partido Socialista. El recorrido se cierra hacia comienzos de los años cincuenta, momento en que los intelectuales socialistas producen las más densas caracterizaciones del peronismo como fenómeno "totalitario", y justo antes de que la clave "anti-totalitaria" comience a ser cuestionada por la militancia socialista, en particular la juvenil.This article explores the press and the publications of the leaders of the argentine Socialist Party in an effort to account for one of the principal lines of its ideological message: the one represented by the different uses of the term "totalitarianism". It reconstructs the way in which the "anti-totalitarian" discourse allowed the party leadership not only to condemn the regime originated in the revolution which took place in 1943 and the Peronist government which emerged from it by associating both directly with contemporary European experiences, but also to challenge the Communists and left-wing members of the Socialist Party, because of their proximity to Peronism. This ideological itinerary was all but exhausted by the beginning of the '50s, when socialist intellectuals produced their densest characterizations of Peronism as a "totalitarian" phenomenon and just before the"anti-totalitarian" agenda began to be challenged, by grass-roots socialist militants, and particularly by the youth sector of the

  5. Networks in Argentine agriculture: a multiple-case study approach Redes en la agricultura argentina: un estudio de caso múltiple Redes na agricultura argentina: um estudo de caso múltiplo

    Directory of Open Access Journals (Sweden)

    Sebastián Senesi

    2013-06-01

    Full Text Available Argentina is among the four largest producers of soybeans, sunflower, corn, and wheat, among other agricultural products. Institutional and policy changes during the 1990s fostered the development of Argentine agriculture and the introduction of innovative process and product technologies (no-till, agrochemicals, GMO, GPS and new investments in modern, large-scale sunflower and soybean processing plants. In addition to technological changes, a "quiet revolution" occurred in the way agricultural production was carried out and organized: from self-production or ownership agriculture to a contract-based agriculture. The objective of this paper is to explore and describe the emergence of networks in the Argentine crop production sector. The paper presents and describes four cases that currently represent about 50% of total grain and oilseed production in Argentina: "informal hybrid form", "agricultural trust fund", "investor-oriented corporate structure", and "network of networks". In all cases, hybrid forms involve a group of actors linked by common objectives, mainly to gain scale, share resources, and improve the profitability of the business. Informal contracts seem to be the most common way of organizing the agriculture process, but using short-term contracts and sequential interfirm collaboration. Networks of networks involve long-term relationships and social development, and reciprocal interfirm collaboration. Agricultural trust fund and investor-oriented corporate structures have combined interfirm collaboration and medium-term relationships. These organizational forms are highly flexible and show a great capacity to adapt to challenges; they are competitive because they enjoy aligned incentives, flexibility, and adaptability.La Argentina está entre los cuatro mayores productores mundiales de soja, girasol, maíz y trigo, entre otros productos agrícolas. Los cambios institucionales y políticos que ocurrieron en la década de 1990

  6. Mutations in CFTR gene and clinical correlation in Argentine patients with congenital bilateral absence of the vas deferens Correlación de las características clínicas con mutaciones del gen CFTR en pacientes argentinos con ausencia bilateral congénita de vasos deferentes

    Directory of Open Access Journals (Sweden)

    Estrella M Levy

    2004-06-01

    Full Text Available Congenital bilateral absence of the vas deferens (CBAVD is a form of male infertility in which mutations in the cystic fibrosis transmembrane conductance regulator (CFTR gene have been identified. Here we identify different mutations of CFTR and the poly-T variant of intron 8 (IVS8 in Argentine patients and analyze sweat test values and clinical characteristic related to Cystic Fibrosis (CF. For counseling purposes the two most frequent mutations in Argentine CF population: DF508 and G542X were screened in wives. In all cases, it was possible to reduce the risk of CF/CBAVD descendants in these couples because none of the mutation were found in the 36 samples. Eight patients (23% showed abnormal chloride values (> 60 mmol/l. A second group of 6 patients (18% had borderline values of sweat chloride (40-59 mmol/l. We defined another group with 6 patients (18%, with normal sweat chloride levels (30-39 mmo/l and a fourth group of 14 (41% patients with sweat chloride below 30 mmol/l. DF508, the most frequent CF mutation in the Argentine population, was found on 15 of the 72 chromosomes (21%, R117H mutation was detected on 2 of 62 chromosomes (3%. Only one R347P allele was found on 28 chromosomes analyzed (2%. On a sample of 27 patients, IVS8 analysis showed a frequency of 6/56 chromosomes (11% of 5T allele. Even though these findings present an improvement in the detection of mutations related to clinical correlations in Argentine CBAVD population, the search for other common and uncommon mutations should be continued.La ausencia bilateral congénita de vasos deferentes (CBAVD es una forma de infertilidad masculina en la que se han identificado mutaciones en el gen de la conductancia transmembrana de la fibrosis quística (CFTR. Hemos estudiado en pacientes argentinos diferentes mutaciones en el CFTR y la variante poli T del intron 8 (IVS8 y analizado los valores de test del sudor y las características clínicas relacionadas a la Fibrosis Qu

  7. Biological patterns of the Argentine shortfin squid Illex argentinus in the slope trawl fishery off Brazil Patrones biológicos del calamar argentino Illex argentinus en la pesquería de arrastre en el talud continental de Brasil

    Directory of Open Access Journals (Sweden)

    José Angel Alvarez Perez

    2009-01-01

    Full Text Available Commercial exploitation of the Argentine shortfin squid (Illex argentinus was virtually non-existent in Brazilian waters until 2000 when foreign trawlers initiated their operations on slope grounds as part of a government-induced chartering program. Since then, the species has been included among the targets of a developing slope trawl fishing off southeastern and southern Brazil. Biological samples were collected from commercial catches of 25 national and seven foreign (chartered trawlers between 23°-33°S and 170-740 m depth. These samples represent two periods of the commercial exploitation of Illex argentinus in Brazil: 2001-2003, when both chartered and national trawlers operated simultaneously, and 2006-2007, when only national vessels continued to exploit I. argentinus along with other slope stocks. Catches contained immature and ma-turing squid throughout the year, as well as at least two distinct, fully mature, spawning groups: one composed of small-sized males and females present year-round on the shelf-break/ upper slope (La explotación comercial del calamar argentino (Illex argentinus no existía en aguas brasilenas hasta el año 2000, cuando buques extranjeros iniciaron sus operaciones en el talud como parte de un programa gubernamental de arrendamiento. Desde entonces la especie forma parte de un conjunto de recursos que han motivado el desarrollo de una pesquería de arrastre en el talud del sur y sureste de Brasil. Se colectaron muestras biológicas de las capturas comerciales de 25 buques arrastreros nacionales y siete extranjeros entre los paralelos 23°-33°S y en profundidades de 170 a 740 m. Estas muestras representaron dos periodos de la explotación comercial de I. argentinus en Brasil: 2001-2003, cuando buques nacionales y extranjeros operaron simultáneamente, y 2006-2007 cuando sólo buques nacionales permanecieron explotando el calamar argentino en conjunto con otros recursos del talud. Las capturas estuvieron

  8. 西南大西洋公海阿根廷滑柔鱼渔业生物学初探%Fishery biological properties of Illex argentines in the High Sea of Southwest Atlantic Ocean

    Institute of Scientific and Technical Information of China (English)

    朱文斌; 陈峰; 张龙; 徐汉祥; 张洪亮

    2014-01-01

    Fishery biology including catch stock composition, morphological properties, sex ratio, nidamen-tal gland and gonad development of squid Illex Argentines were analyzed based on the 666 samples from the China’s fishing boat in the Southwest Atlantic Ocean during January to April 2012 . The results showed that the mantle length ranged from 91 mm to 351 mm, showing a bimodal distribution, the average mantle length of females and males was 243. 6 mm and 214. 5 mm respectively, meaning that the size of female individuals was significantly bigger than that of males. The sex ratio of female to male was 1. 26:1, and the females domina-ted in this stock. The sexual maturity was mainly in phase Ⅱ (57. 9%) , but the proportion of mature indi-viduals above phase Ⅲ reached 42. 1%. The sexual maturity and nidamental gland development of female were related to the individual size and further researches suggested that nidamental gland length-weight pres-ented a power function, and nidamental gland index ( NGI) of mature individuals was significantly greater than for the immature individuals. The male gonad gradually developed with its body size. According to body size and sexual maturity, the squid captured during the investigation was mainly South Patagonic Stock ( SPS) , mixed with a small amount of Summer-Spawning Stock ( SSS) .%根据2012年1-4月西南大西洋公海鱿钓渔船随机采集的666尾阿根廷滑柔鱼样本,对其鱿钓渔获的群体组成、形态特征、雌雄性比、缠卵腺及性腺发育等渔业生物学进行分析。结果显示:调查期间鱿钓渔业阿根廷滑柔鱼渔获群体胴长为91~351 mm,呈双峰分布,雌、雄性平均胴长分别为243.6 mm 和214.5 mm,雌性个体显著大于雄性;雌雄性比为1.26:1,以雌性个体为主;雌性群体性成熟以Ⅱ期为主(57.9%),Ⅲ期以上个体为42.1%;雌性性成熟度、缠卵腺发育程度与个体大小密切相关,进一步研究认为缠卵腺长与其重量存在

  9. Modificación de la fertilidad por prácticas de manejo del suelo en Famatina, La Rioja, Argentina Modification of fertility by agronomic practices on the soil in Famatina, La Rioja, Argentine

    Directory of Open Access Journals (Sweden)

    Normando Villafañe Vega

    2010-04-01

    Full Text Available En Famatina, La Rioja (Argentina en cultivo de ajo (Allium sativum L. en suelo franco arenoso se dispusieron melgas con los tratamientos de suelo siguientes: T1 = 2 años consecutivos sin fertilizantes ni abono después de 1 año sin cultivar; T2 = 2 años consecutivos con fertilizantes químicos (FQ y 1 año previo con cultivo de ajo; T3 = 1 año con FQ más 23 t/ha de abono orgánico caprino precedido de un cultivo de avena (Avena sativa L.; T = 2 años consecutivos con FQ y abono caprino (23 t/ha en suelo cultivado previamente con avena; T5 = 1 año con FQ después de 2 años cultivado con avena; T6 = 1 año con FQ y 2 años previos con cultivo de alfalfa (Medicago sativa L.. Se tomaron muestras de suelo a la siembra y en la cosecha hasta 80 cm de profundidad. Se empleó el análisis de componente principal (ACP para las variables de suelo. Los contenidos de materia orgánica, NO3 -, N total, P y K fueron favorecidos por los T3 y T4 en comparación con el T2. El cultivo de alfalfa favoreció los menores valores de pH (6.2 y conductividad eléctrica (CE asociados con valores máximos de nitratos entre 30 y 80 cm de profundidad. En esta profundidad, los T3 y T4 presentaron contenidos de nitrato similares a los de T2 y T5. En el T2, después de 2 años el pH cambió de 7.2 a 6.8, el contenido de C de 0.6 a 0.4% y aumentó la CE de 1.9 a 2.8 dS/m.The study was carried out with garlic (Allium sativum L. cropped in a sandy loam soil in Famatina, La Rioja Argentine. Strips of soil were used with the following soil treatments: T1, a 2-year period with no fertilizers or manure after one year without cropping; T2, a 2-year period with chemical fertilizers (CF preceded by garlic.; T3, combined use of CF and 23 t ha-1 of goat feces for a 1-year period preceded by oats (Avena sativa L.; T4 pooled CF and 23 t ha-1 of goat feces for a 2-year period preceded by oats; T5 a 1-year period with CF came after an oat crop of two years; and T6, use of CF following

  10. Government and Opposition in the Argentine Congress, 1989-2007: Understanding Inter-Party Dynamics through Roll Call Vote Analysis Gobierno y oposición en el Congreso Argentino, 1989-2007: Entender la dinámica interpartidaria mediante el análisis de votaciones nominales

    Directory of Open Access Journals (Sweden)

    Mark P. Jones

    2009-04-01

    Full Text Available This article employs roll call vote data and Bayesian ideal point estimation to examine inter-party dynamics in the Argentine Chamber of Deputies between 1989 and 2007. It highlights the presence in the Argentine Congress of a strong government vs. opposition dimension as well as identifies the relative position on this dimension, vis-à-vis the governing party, of the most prominent non-governing parties. Special attention is paid to the evolution of inter-party legislative dynamics during Argentina’s brief experience with coalition government (1999-2001 and to party behavior in the Chamber during the final two years of President Néstor Kirchner’s term in office (2005-07 El presente artículo analiza la dinámica interpartidaria en la Cámara de Diputados argentina entre 1999 y 2007 utilizando votaciones nominales y técnicas Bayesianas de estimación de puntos ideales. El análisis destaca la presencia de una fuerte dimensión gobierno-oposición en la arena legislativa, así como la posición relativa que adoptan los principales partidos opositores respecto del partido de gobierno. El trabajo explora con particular atención la evolución de la dinámica interpartidaria durante la breve experiencia de gobierno de coalición (1999-2001 y la performance partidaria en el Congreso durante los últimos dos años del mandato presidencial de Néstor Kirchner (2005-07.

  11. [Argentine guidelines for urticaria and angioedema].

    Science.gov (United States)

    Máspero, Jorge; Cabrera, Hugo; Ardusso, Ledit; De Gennaro, Mónica; Fernández Bussy, Ramón; Galimany, José; Galimberti, Daniel; Label, Marcelo; La Forgia, Marta; Medina, Iris; Neffen, Hugo; Troielli, Patricia

    2014-01-01

    This interdisciplinary paper summarizes the news in the diagnosis and treatment of chronic urticaria (CU), and provides concepts, definitions and evidence-based suggestions for its management. Urticaria occurs in at least 20% of the population at some point in their lives. Acute urticaria (less than 6 weeks' duration), differs from CU in its etiology, but the onset of this disease is always acute. CU may occur as spontaneous (SCU) or induced (ICU). The diagnosis is simple, although a careful evaluation is necessary for differential diagnosis. ICU's diagnosis is mainly clinical, even if provocation tests can be useful. Supplementary studies should be limited and based on the clinical suspicion. Treatment may be divided into three approaches: avoidance, elimination or treatment of the cause, and pharmacological treatment. Recently treatment has been modified with the use of second-generation antihistamines as first-line and increased doses of nonsedating H1 antihistamines, up to 4 times, as second line. Antihistamines are essential to treat CU; however, 40% of patients do not achieve good control despite increased doses and require additional treatment. The most recent evidence indicates a group of drugs to be used as third line in these cases, to improve quality of life and to limit toxicity from frequent or chronic use of systemic steroids. Only 3 drugs are recommended as third line: omalizumab, cyclosporin A or anti-leukotrienes.

  12. The Southern Argentine Agile Meteor Radar (SAAMER)

    Science.gov (United States)

    Janches, Diego

    2014-11-01

    The Southern Argentina Agile Meteor Radar (SAAMER) is a new generation system deployed in Rio Grande, Tierra del Fuego, Argentina (53 S) in May 2008. SAAMER transmits 10 times more power than regular meteor radars, and uses a newly developed transmitting array, which focuses power upward instead of the traditional single-antenna-all-sky configuration. The system is configured such that the transmitter array can also be utilized as a receiver. The new design greatly increases the sensitivity of the radar enabling the detection of large number of particles at low zenith angles. The more concentrated transmitted power enables additional meteor studies besides those typical of these systems based on the detection of specular reflections, such as routine detections of head echoes and non-specular trails, previously only possible with High Power and Large Aperture radars. In August 2010, SAAMER was upgraded to a system capable to determine meteoroid orbital parameters. This was achieved by adding two remote receiving stations approximately 10 km away from the main site in near perpendicular directions. The upgrade significantly expands the science that is achieved with this new radar enabling us to study the orbital properties of the interplanetary dust environment. Because of the unique geographical location, SAAMER allows for additional inter-hemispheric comparison with measurements from Canadian Meteor Orbit Radar, which is geographically conjugate. Initial surveys show, for example, that SAAMER observes a very strong contribution of the South Toroidal Sporadic meteor source, of which limited observational data is available. In addition, SAAMER offers similar unique capabilities for meteor showers and streams studies given the range of ecliptic latitudes that the system enables detailed study of showers at high southern latitudes (e.g July Phoenicids or Puppids complex). Finally, SAAMER is ideal for the deployment of complementary instrumentation in both, permanent and campaign, operational mode. Results from various radar meteor investigations as well as radar/optical observation campaign will be presented in this paper.

  13. First echoes of relativity in Argentine astronomy

    CERN Document Server

    Gangui, Alejandro

    2008-01-01

    We consider the attitude of astronomers in Argentina in connection with the new problems posed by relativity theory, before and after GR was presented. We begin considering the sequence of "technical" publications that appeared and use it to attempt to identify who were the relativity leaders and authors in the Argentina scientific community of the 1910-1920s. Among them there are natives of Argentina, permanent resident scientists, and occasional foreign visitors. They are either academic scientists, or high school teachers; we leave aside the {\\it philosophers} and the {\\it aficionados}. We discuss the scientific facts and publications they handled, the modernity of their information and the "language" they use to transmit their ideas. Finally, we consider astronomers proper; first Charles Perrine, an astronomer interested in astrophysics, contracted by the government of Argentina in the USA as director of its main observatory. He became interested in testing the possible deflection of light rays by the Sun...

  14. Latest Adjustment of the Argentine Height System

    Science.gov (United States)

    Piñón, D. A.; Cimbaro, S. R.; Sanchez, R. E.

    2013-05-01

    For over 70 years the National Geographic Institute of Argentina (NGI) has conducted a systematic project to building benchmarks throughout the country, which have been measured with spirit leveling and gravimetry techniques. The measurements were undertaken on a total of approximately 18,000 benchmarks, which define the High Precision Leveling Network of Argentina. The first adjustment of this network took place in 1971. This assignment was given to the Defense Mapping Agency of the United States of America (DMA). Leveling lines that were built and measured after the year 1971 were adjusted to this original network. It was of great importance to perform a new adjustment calculation with modern techniques to update the entire network. Some modern tools worth mentioning are: gravity interpolation using prediction method and topographic correction calculation by the Hammer method using SRTM model. All historical field books were digitalized to retrieve the information corresponding to the spirit leveling, from which it was then possible to calculate geopotential difference between the nodes, using the gravity acceleration values over the benchmarks. Subsequently, by the method of least squares it was possible to calculate the geopotential numbers of the nodes, and then the orthometric height of all the benchmarks. The recommendations of the Working Group III of SIRGAS (Geodetic Reference System for the Americas) were taken into account in relation to this task. The development of this paper shows the results that have been obtained so far in the development of the New Height System for Argentina.

  15. Radiation Testing of a Low Voltage Silicone Nuclear Power Plant Cable.

    Energy Technology Data Exchange (ETDEWEB)

    Bernstein, Robert

    2014-08-01

    This report summarizes the results generated in FY13 for cable insulation in support of DOE's Light Water Reactor Sustainability (LWRS) Program, in collaboration with the US- Argentine Binational Energy Working Group (BEWG). A silicone (SiR) cable, which was stored in benign conditions for %7E30 years, was obtained from Comision Nacional de Energia Atomica (CNEA) in Argentina. Physical property testing was performed on the as-received cable. This cable was artificially aged to assess behavior with additional analysis. SNL observed appreciable tensile elongation values for all cable insulations received, indicative of good mechanical performance. Of particular note, the work presented here provides correlations between measured tensile elongation and other physical properties that may be potentially leveraged as a form of condition monitoring (CM) for actual service cables. It is recognized at this point that the polymer aging community is still lacking the number and types of field returned materials that are desired, but SNL -- along with the help of others -- is continuing to work towards that goal. This work is an initial study that should be complimented with location- mapping of environmental conditions of CNEA plant conditions (dose and temperature) as well as retrieval, analysis, and comparison with in-service cables.

  16. Preliminary investigations on the use of uranium silicide targets for fission Mo-99 production

    Energy Technology Data Exchange (ETDEWEB)

    Cols, H.; Cristini, P.; Marques, R.

    1997-08-01

    The National Atomic Energy Commission (CNEA) of Argentine Republic owns and operates an installation for production of molybdenum-99 from fission products since 1985, and, since 1991, covers the whole national demand of this nuclide, carrying out a program of weekly productions, achieving an average activity of 13 terabecquerel per week. At present they are finishing an enlargement of the production plant that will allow an increase in the volume of production to about one hundred of terabecquerel. Irradiation targets are uranium/aluminium alloy with 90% enriched uranium with aluminium cladding. In view of international trends held at present for replacing high enrichment uranium (HEU) for enrichment values lower than 20 % (LEU), since 1990 the authors are in contact with the RERTR program, beginning with tests to adapt their separation process to new irradiation target conditions. Uranium silicide (U{sub 3}Si{sub 2}) was chosen as the testing material, because it has an uranium mass per volume unit, so that it allows to reduce enrichment to a value of 20%. CNEA has the technology for manufacturing miniplates of uranium silicide for their purposes. In this way, equivalent amounts of Molybdenum-99 could be obtained with no substantial changes in target parameters and irradiation conditions established for the current process with Al/U alloy. This paper shows results achieved on the use of this new target.

  17. Relegation, movements, conflict. Notes to think urban social question in contemporary Argentine Relegación, desplazamiento, conflicto. Notas para pensar la cuestión social urbana en la Argentina contemporánea

    Directory of Open Access Journals (Sweden)

    Daniela Soldano

    2008-09-01

    Full Text Available This paper addresses the ‘‘social question’’ and the problem of inequality in contemporary Argentine. It is based on a qualitative research on processes of territorial and socio-economic relegation in the metropolitan area of Buenos Aires city and the way they shape the identity of its inhabitants. In particular, it focuses on ‘‘recuperadores urbanos de residuos’’ (impoverished trash pickers who pick garbage
    that can be sold and recycled and the type of exchanges in which they engage in their movements –usually conflictive– along the urban space. These movements from ‘‘confined’’ areas, together with the
    social relations they promote between different social sectors, shed light on the workings of a society increasingly defined by social differentiation.

  1. ¿Entes de regulación o control? Imprecisiones del "moderno" esquema de regulación: reflexiones y enseñanzas del caso argentino Regulatory or control agencies? Impreciseness of the 'modern' regulation scheme: thoughts and teachings from the Argentine case

    Directory of Open Access Journals (Sweden)

    Carolina Nahón

    2007-12-01

    Full Text Available Este artículo analiza las particularidades del "moderno" esquema de regulación de los servicios públicos de infraestructura, que se extendió a partir de los procesos de privatización del último cuarto del siglo XX. Diferenciándose de la arquitectura institucional vigente durante el período de prestación estatal (regulación "endógena", los entes reguladores emergen como el elemento neurálgico de este nuevo esquema. Sin embargo, como se desprende de la experiencia argentina, estos organismos han sido dotados de ambiguas atribuciones regulatorias e inapropiados diseños institucionales, quedando trunca su capacidad real de regulación. A raíz de la difusa delimitación de misiones y funciones e - incluso - frente a las imprecisiones teóricas en la materia, este artículo precisa el alcance de la intervención de los distintos actores del sistema de prestación y regulación: empresas prestadoras, entes reguladores, poderes del Estado (Ejecutivo y Legislativo y usuarios y consumidores. En este sentido, trabaja sobre los diseños institucionales más apropiados para que los entes desarrollen efectivas capacidades de regulación. El análisis se ejemplifica a partir de la experiencia privatizadora argentina - nacional y subnacional - en los servicios de agua potable y saneamiento y distribución de electricidad.This article analyzes the particularities of the public utilities 'modern' regulation scheme, which became predominant during the privatization processes of the last quarter of the twentieth century. In contrast with the institutional framework characteristic of the period of state provision ('endogenous' regulation, the regulatory agencies emerge as the neuralgic element of the new scheme. However, as the Argentine experience demonstrates, these organisms have been endowed with ambiguous regulatory capacities and inappropriate institutional frameworks, and therefore their actual regulatory capacity has been seriously damaged. As

  2. Making Sense of an Unstable Legislature: Committee Assignments in the Argentine Chamber of Deputies, 1946–2001 La lógica de una legislatura inestable: la distribución de comisiones en la Cámara de Diputados Argentina, 1946-2001

    Directory of Open Access Journals (Sweden)

    Silvina Lilian Danesi

    2011-01-01

    Full Text Available Latin American legislatures have gone largely unstudied, with the functioning of the Argentine Chamber of Deputies prior to the 1980s being an entirely unexplored subject. This paper fills that gap by examining the organization of the Chamber, with particular focus on its standing committee system from 1946 to 2001. We assess the portability of two U.S.-based theoretical approaches to legislative organization by applying them to committee assignments. An original data set of Argentine deputies was constructed and a way of measuring political power in committees was devised for this study. Despite weak democratic governments, military interventions, and changes to the electoral system, we find that ruling parties have consistently influenced the committee system, shaping its structure and securing an over-proportion of their deputies in key committee positions. These results support the applicability of the U.S. originated Cartel Theory of legislative organization to understanding and studying legislatures outside that country.Las legislaturas latinoamericanas no han recibido debida atención. Un caso emblemático es la Cámara de Diputados Argentina, cuyo funcionamiento previo a los 1980’s ha sido inexplorado. Este artículo persigue llenar ese vacío examinando la organización de su sistema de comisiones permanentes desde 1946 hasta 2001. Para ello, evaluamos la aplicabilidad de dos teorías norteamericanas sobre organización legislativa para analizar la integración de comisiones, creamos una base de datos de diputados argentinos y diseñamos una forma de medir su poder político en las comisiones. A pesar de la inestabilidad institucional y los cambios de sistema electoral, los resultados demuestran que los partidos que controlaron la Cámara influenciaron en forma sistemática el sistema de comisiones, cambiando su estructura y asegurando la sobrerrepresentación de sus diputados en cargos clave. El estudio confirma, asimismo, la

  3. The Spanish press and the Argentine dictatorship (1976-1983: the portrayal of exile in «ABC», «El País» and «Triunfo» Prensa española y dictadura argentina (1976-1983: la imagen del exilio en «ABC», «El País» y «Triunfo»

    Directory of Open Access Journals (Sweden)

    Patricia MARENGHI

    2010-10-01

    Full Text Available The article analyses the information publishes in the Spanish press (El País, ABC and Triunfo on the phenomenon of the Argentine exile and on the last dictatorship (1976­1983 which caused it. The object is to examine the portrayal of the exiles that was developed in these newspapers. Two periods were selected which include the months of May and June in 1978 (Football World Cup, and April, May and June of 1982 (Malvinas War, as these events attracted the interest of international media.Este trabajo analiza las informaciones aparecidas en la prensa española (El País, ABC y Triunfo sobre el exilio argentino y la última dictadura (1976-1983 que lo provocó. Busca, en este sentido, examinar la imagen que de ellos desarrollaron estos diarios. Se han escogido dos períodos de tiempo que incluyen los meses de mayo y junio de 1978 (Mundial de Fútbol y abril, mayo y junio de 1982 (Guerra de Malvinas ya que fueron los que más despertaron el interés internacional de los medios de comunicación.

  4. Simulation of the park for electric generation of the Argentine Republic, analysis of its possible expansion with restrictions in the disposability of the fossil fuels; Simulacion del parque de generacion electrica de la Republica Argentina, analisis de su posible expansion con restricciones en la disponibilidad de los combustibles fosiles

    Energy Technology Data Exchange (ETDEWEB)

    Giubergia, J.H.; Coppari, N.R. [Comision Nacional de Energia Atomica, Centro Atomico Constituyentes, Unidad de Actividad Reactores y Centrales Nucleares, Avda. Gral. Paz 1499 (1650) San Martin, Provincia de Buenos Aires (Argentina); Rey, F.C. [Comision Nacional de Energia Atomica, Centro Atomico Ezeiza, Presbitero Juan Gonzalez y Aragon 15, (B1802AYA) Ezeiza, Provincia de Buenos Aires (Argentina)]. E-mail: giuberg@cnea.gov.ar

    2004-07-01

    In this work one simulates, using the program MESSAGE, the generation park electric of the Argentine Republic and their possible expansion, with restrictions in the readiness of fossil fuels. This, as other models of planning energetics promoted by IAEA, optimizes the expansion of the net having as function objective the smallest cost in the system. 25 years they were simulated, adopting like base the anus 2000 and considering different scenarios of internal and external demands. It was analysed the increase of the demand with restrictions in the readiness of the natural gas in the winter periods, since the Argentinean electric system has a great dependence of this fuel. To cover the increase of the electric demand, were selected the machines and fuels, at the moment available, with more technical and economic possibilities. In the scenarios without restrictions to the use of natural gas the program selects to the nuclear power station of Atucha II, to the increase of bench mark of the hydraulic power station of Yacireta and combined cycles that burn natural gas. In those in that the supply of natural gas is limited, it selects previously besides the signal ones, other nuclear power stations, other hydroelectric projects and turbines of gas operating with gas oil to cover the top requirements. (Author)

  5. Visibilidad de las revistas argentinas en bases de datos internacionales: Proyecto UBACYT F28 (Programación científica 2001-2002 Visibility of Argentine periodicals in international databases: A project UBACYT F28 (Programación científica 2001-2002

    Directory of Open Access Journals (Sweden)

    Susana Romanos de Tiratel

    2002-06-01

    Full Text Available El principal propósito de este proyecto es estudiar la presencia (visibilidad de las revistas argentinas de Humanidades y Ciencias Sociales en bases de datos internacionales. En primer lugar se aborda el tema dentro del marco teórico que justifica y avala el proyecto. Luego, tomando en cuenta la principal bibliografía existente en esta temática, se pasa revista a los objetivos buscados, a la metodología empleada, a las precisiones conceptuales, y a los procedimientos llevados a cabo. Finalmente, se presentan los primeros resultados obtenidos.The main purpose of this project is to study the presence (visibility of Argentine journals of Social Sciences and Humanities in international databases. Firstly, the subject is approached within the theoretical framework that justifies and guarantees the project. Secondly, taking into account the main existing bibliography on the subject, the searched objectives, the methodology used, the conceptual precision, and the proceedings are browsed. Finally, the first results obtained are shown.

  6. Detección de secuencias homologas al Gen Env del virus del tumor mamario murino (MMTV en Cáncer de mama de pacientes argentinas Detection of murine mammary tumor virus (MMTV env gene-like sequences in breast cancer from Argentine patients

    Directory of Open Access Journals (Sweden)

    Stella M. Melana

    2002-08-01

    Full Text Available En los últimos años se ha renovado el interés en la investigación sobre la posible etiología viral del cáncer de mama humano. En publicaciones previas se ha demostrado la presencia de secuencias homólogas al gen env del virus del Tumor Mamario Murino (MMTV en alrededor del 38% de cánceres de mama de mujeres procedentes de Estados Unidos e Italia; estas secuencias están generalmente ausentes en otros tumores y en tejido mamario normal. En el presente trabajo se analizó la presencia de una secuencia de 250 pb similar a la del gen env de MMTV en biopsias de pacientes argentinas con cáncer de mama. Se detectó este fragmento retroviral en el 31% (23/74 de los tumores analizados, mientras que sólo se obtuvo un caso positivo en tejido de mama normal y ninguno en fibroadenomas. En 46 pacientes con cáncer se analizaron células mononucleares de sangre periférica, detectando la secuencia en el 17% (2/12 de las pacientes portadoras de tumores env positivos y en el 3% (1/34 de aquéllas cuyos tumores eran env negativos. Los datos de Argentina son similares a los obtenidos en Estados Unidos e Italia donde la incidencia de cáncer de mama es también semejante. Estos resultados apoyarían la hipótesis de un probable agente viral implicado en la génesis de esta neoplasia y alientan los estudios en marcha.In the last years research on the possible viral etiology of human breast cancer has been revised. Previous studies have demonstrated the presence of a Mouse Mammary Tumor Virus (MMTV env gene-like sequence in about 38% of breast cancers from American and Italian women; these sequences are generally absent in other tumors and in normal mammary tissue. In the present study we have analyzed the presence of a 250-bp sequence of the MMTV env gene in breast cancer biopsies from Argentine patients. The retroviral fragment was present in 31% (23/74 of the tumors, only in one normal mammary tissue and in none of the fibroadenomas analized. Peripheral

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

    Directory of Open Access Journals (Sweden)

    Carlos Gervasoni

    2010-01-01

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

  8. La división sexual del trabajo de mando: carreras femeninas en las grandes firmas argentinas A divisão sexual do trabalho de direção: carreiras femininas nas grandes firmas argentinas The sexual division of administrative labor: feminine careers at large Argentine companies

    Directory of Open Access Journals (Sweden)

    Florencia Luci

    2010-06-01

    Full Text Available Este artículo analiza las particulares condiciones en que se desarrolla la carrera directiva femenina en grandes empresas argentinas. Se basa en un trabajo cualitativo realizado en ocho firmas globales que tienen sede en Buenos Aires, por el cual se entrevistaron a managers de distintas edades, sexo y nivel jerárquico. La intención es comprender las desiguales condiciones que experimentan las mujeres para acceder a los puestos directivos. Para ello se analizan las específicas características que estructuran la carrera managerial y que resultan en el "techo de vidrio" que las separa de la cima de la organización.Este artigo analisa as condições especiais em que se desenvolve a carreira diretiva feminina nas grandes empresas argentinas. Baseia-se em um trabalho qualitativo realizado em oito firmas globais com sede em Buenos Aires, no qual se entrevistaram gerentes de variadas idades, sexo e nível hierárquico. A intenção é compreender as condições desiguais que as mulheres experimentam para subir a postos diretivos. Para isso, analisam-se as características específicas da carreira gerencial e que resultam no "teto de vidro" que as separa do topo da organização.This article analyzes the particular conditions in which administrative careers for women develop at large Argentine companies. It is based on a qualitative study conducted at eight global companies based in Buenos Aires, at which were interviewed managers of various ages, genders and levels. The intention was to understand the unequal conditions that women experience in managerial positions, the specific characteristics of a managerial career and the "glass ceiling" that separates them from the top of the organization.

  9. Tipología de las bibliotecas argentinas desde el período hispánico hasta 1830: Una primera clasificación provisional Typology of the Argentine Libraries since the Hispanic Period to 1830: A First Provisional Classification

    Directory of Open Access Journals (Sweden)

    Alejandro E. Parada

    2003-12-01

    Full Text Available El presente artículo intenta trazar una breve clasificación de los distintos «tipos» de bibliotecas existentes en el actual territorio argentino durante la dominación hispánica hasta el año 1830. La tipología adoptada es, ante todo, una aproximación provisional y ampliamente perfectible. La contribución se dirige, en líneas generales, a quienes se inician en el estudio de la «Historia del libro, de las bibliotecas y de la lectura» en la Argentina. En este sentido, la bibliografía citada intenta suplir la falta de guías de estudio sobre esta temática. Las bibliotecas identificadas son las siguientes: de instituciones o corporaciones religiosas, particulares, pública catedralicia, pública conventual, pública, de sociedades de extranjeros (societarias, de institutos de enseñanza, circulantes (y gabinetes de lectura, y por encargo u ofrecidas por negociantes.This article tries to outline a brief classification of the different types of existing libraries in the present Argentine territory since the Hispanic domination to 1830. The typology adopted is, above all, a provisional approach greatly rectifiable. The contribution is aimed, in general terms, to whom start the study of the history of the books, libraries, and reading in Argentina. In that sense, the quoted bibliography tries to substitute the lack of study guides on the subject. The identified libraries belong to: institutions or religious corporations; private individuals; foreigners societies (i.e.: belonging to a society; educational institutes; and cathedral public libraries; conventual public libraries; public libraries; circulating libraries (and reading rooms; and libraries made to order or offered by businessmen.

  10. Voces distantes, otras miradas examinan el círculo de hierro: política, emigración y exilio en la declinación Argentina Distant voices, different visions examine the iron circle: Politics, emigration and exile in the Argentine decline

    Directory of Open Access Journals (Sweden)

    Guillermo MIRA DELLI-ZOTTI

    2010-10-01

    Full Text Available Desde la década de 1950 los argentinos abandonan su país por razones económicas, políticas, familiares o culturales. Este artículo relaciona este fenómeno tan negativo para el desarrollo social con las prácticas y la cultura política dominantes en la Argentina de los últimos 50 años. E identifica la pérdida continua de capital humano como síntoma y componente de la miríada de causas que pueden explicar la declinación argentina y su profunda crisis actual.Since the 1950s, Argentines left their country for economic reasons, political, familiar and cultural. The article relates this very negative phenomenon in terms of social development, to the practices and dominant political culture in Argentina in the last 50 years. It also identifies the continuous loss of human capital as both a symptom and consequence of the myriad of causes which can explained the decline of Argentina and its current crisis.

  11. A Argentina entre as reformas econômicas neoliberais e a redefinição das negociações com o FMI (1989-2007 L'Argentine entre les réformes économiques néoliberales et la redéfinition des négociations avec le FMI (1989-2007 Argentina: between neoliberal economic reform and redefinitions of negotiations with the IMF (1989-2007

    Directory of Open Access Journals (Sweden)

    Roberta Rodrigues Marques da Silva

    2009-06-01

    ública.Cet article a pour objectif d'analyser l'influence de la crise économique sur la formation de nouvelles coalitions politique dans l'Argentine des années 2000, qui ont mené à la rupture de la politique économique adoptée par les gouvernements Menem et De la Rúa. Ces transformations ont favorisé un changement dans la stratégie du gouvernement Néstor Kirchner concernant les relations avec le Fonds Monétaire International (FMI, ce qui a engendré une position plus dure de la part du gouvernement argentin et un rejet des positions du FMI. La politique économique soutenue par les gouvernements Duhalde et Kirchner s'est appuyée sur le régime de change compétitif, à la place du régime de conversion en vigueur dans les années 1990, et comptait sur l'appui des groupes d'entrepreneurs orientés vers le marché domestique, mieux lotis en fonction de la dévalorisation du « peso ». La proposition de ces gouvernements pour la relance économique a supprimé des acteurs ayant des liens étrangers, qui participaient à des coalitions d'appui sous Menem et De la Rúa. Parmi les exclus, figuraient les créanciers ayant des papiers de la dette en moratoire depuis 2001 et les entreprises offrant des services publics qui avaient été privatisées dans les années 1990 et qui ont reçu appui du FMI. Ces raisons expliquent le fait que les négociations avec le Fonds pendant le gouvernement Kirchner ont été marquées par des impasses et par l'attitude énergique de la part des négociateurs argentins. Des transformations dans le contexte international ont également eu des impacts sur les négociations du gouvernement Kirchner avec le FMI. Avec l'élections de George W.Bush aux États-Unis, en 2000, l'appui nord-américain à la concession d'emprunts du Fonds à des pays en développement s'est affaibli. Le gouvernement républicain a encore prôné la réduction du rôle du FMI dans l'intermédiation des négocitions entre les pays endettés et les créanciers privés. Ainsi

  12. Los hombres del imaginario nacionalista: representaciones de la masculinidad en publicaciones periódicas nacionalistas de derecha argentinas durante la larga década del sesenta (1956-1969 Os homens do imaginário nacionalista: representacões da masculinidade em publicações periódicas nacionalistas de direita argentinas durante a longa década de sessenta (1956-1969 Men in the Nationalist Imaginary: images of Masculinity in Right-wing Nationalistic Argentine Periodicals During the Long Decade of the Sixties (1956-1969

    Directory of Open Access Journals (Sweden)

    María Valeria Galván

    2012-12-01

    Full Text Available Luego de la caída del peronismo en 1955, se inició en la Argentina un proceso de cambios políticos, ideológicos y sociales que afectaron el escenario político y las identidades de sus protagonistas. En este contexto, el nacionalismo argentino se vio obligado a redefinir su identidad y su rol político en el nuevo campo de acción. Así, se percibe en las ublicaciones periódicas más representativas (AyB y los boletines de Tacuara la manera en que el nacionalismo llevó a cabo estas reconfiguraciones a través del uso de dos estereotipos masculinos contrapuestos: el del militante ideal y su opuesto, el ser infrahumano identificado con el adversario político.After the fall of the Peronist government in 1955, the Argentine political scenario and the identities of its main protagonists underwent several political, ideological and social changes. In this context, Argentine Nationalism was forced to redefine its own identity and its new role in the new scenario, in order to survive. Thus, the most representative periodicals (AyB and the Tacuara magazines demonstrate how these reconfigurations were made with the help of a particular masculine stereotype and its countertype; i.e., the ideal activist and its opposite, the subhuman that represented the political adversary.

  13. Influencia de compuestos azúcares y no azúcares en la calidad industrial de caña de azúcar en Tucumán (R. Argentina: Parte 1: caña limpia y despuntada Influence of sugar and nonsugar compounds on sugarcane industrial quality in Tucumán (Argentine Republic

    Directory of Open Access Journals (Sweden)

    B. Silvia Zossi

    Full Text Available Se estudió la concentración de compuestos azúcares y no azúcares, especialmente los que influyen en la formación del color y otros que inciden en el proceso industrial de producción de azúcar blanco directo, de las cuatro variedades comerciales de caña más difundidas en Tucumán (R. Argentina: TUCCP 77-42, LCP 85-384, CP 65-357 y RA 87-3. Estos ensayos fueron realizados durante las zafras 2004 a 2007 en caña limpia y despuntada. Los parámetros analizados fueron: extracción de jugo, Brix %, pol % en jugo y en caña, sacarosa y azúcar recuperable. Se estudiaron no azúcares inorgánicos, tales como cenizas, fosfato y sílice, y no azúcares orgánicos: fibra, almidón, compuestos antocianos y fenoles, nitrógeno amínico, ácidos cis y trans-aconítico, "indicator value" y color. De las cuatro variedades analizadas, la que mejor comportamiento presentó para producir azúcar blanco directo fue LCP 85-384, por su alto contenido en sacarosa y bajo contenido de componentes no azúcares. El segundo lugar le correspondió a la variedad RA 87-3, seguida por CP 65-357 y TUCCP 77-42.The concentration of sugar and nonsugar compounds, especially those which play a part in colour formation and others which affect direct white sugar manufacturing process, was studied in the four commercial cane varieties most widely grown in Tucumán (Argentine Republic: TUCCP 77-42, LCP 85-384, CP 65-357 and RA 87-3. Trials with clean cane were conducted during the 2004-2007 harvests. Analyzed parameters were: juice extraction, Brix %, pol % in juice and cane, sucrose and sugar recovery. Inorganic nonsugar compounds, such as ash, phosphate and silica, as well as organic ones, such as fibre, starch, anthocyanin and phenolic compounds, amino nitrogen, cis and trans-aconitic acids, indicator value and colour, were studied. Results showed that LCP 85-384 variety had the best factory performance to produce direct white sugar because of its high sucrose and low

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

    Directory of Open Access Journals (Sweden)

    Hugo Raul Zerda

    2010-04-01

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

  15. Tanto andar a los mandobles para terminar a los besuqueos: acerca de la relegitimación de los políticos argentinos Tanto andar a los mandobles para terminar a los besuqueos: on the re-legitimacy of Argentine politicians

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    Waldo Ansaldi

    2007-12-01

    Full Text Available Desde el 10 de diciembre de 1983 hasta el momento de escribir estas líneas han trascurrido, en Argentina, veintitrés y medio años ininterrumpidos de vida democrática. Es la primera vez que ello ocurre en la historia del país, superando la primera experiencia de los años 1912-1916 a 1930. El articulo considera la crisis de representatividad de los partidos políticos y, más exactamente, la crisis de la legitimación de los políticos, tan duramente cuestionados cuando la movilización de los días 19 y 20 de diciembre de 2001 (con la consigna: "que se vayan todos". La crisis de 2001 hoy muestra un viraje, en particular, porque los políticos han sido relegitimados por la misma ciudadanía que los hizo objeto de escarnio. En el breve lapso entre abril y setiembre de 2003, el escenario político argentino experimentó una rápida, notable y (para muchos inesperada transformación. Contra las radicales consignas del caliente verano 2001-2002, son demasiados los casos de quienes han recuperado, por el voto popular, su continuidad en cargos políticos.Since December, 10, 1983, twenty-three and a half years have passed of uninterrupted democracy in Argentina. This is the first time in the history of the country that such a thing happens, going beyond the first experience of the years 1912-1926 to 1930. This article considers the crisis of representativity of political parties and, more exactly, the crisis of legitimacy of politicians, so hard questioned during the mobilization of December 19 and 20, 2001 (with the motto: "Let them all go away". The crisis of 2001 is now showing a turning point, particularly because politicians have been relegitimated by the same citizenship that made them object of insult. In the short lapse between April and September 2003, the Argentine political scene experienced a remarkable and rapid and (for many people unexpected transformation. Against the radicals mottos of the hot summer 2001-2002, many politicians

  16. “La patria es una e indivisible” “A pátria é uma e indivisível”: Os modos de narrar a história territorial da Argentina "La patrie est une et indivisible". Les stratégies de récit de l'histoire territoriale de l'Argentine “The nation is one and indivisible”: Ways of telling the Argentinean territorial history

    Directory of Open Access Journals (Sweden)

    Carla Lois

    2012-11-01

    ória territorial da Argentina e colocar em questão os preconceitos sobre o imaginário construído em torno à “perda de territórios”.Une loi récente (2010 exige l'utilisation obligatoire dans tous les niveaux d'enseignement de la carte dite « bicontinental » (où le secteur antarctique revendiqué par l’état argentin est représenté à la même échelle que le territoire continental. En conséquence, la nouvelle silhouette de la carte politique de l'Argentine dédiera désormais la moitié de son espace graphique au « continent blanc ». Cette façon d'intervenir la carte politique à travers des dispositifs juridiques n'est pas complètement nouvelle: depuis la seconde moitié du XIXe siècle, diverses politiques éducatives, diplomatiques et culturels ont cherché de réguler les modes de visualiser, penser et concevoir le territoire national. À partir d'une révision de l'histoire de la carte politique de l'Argentine, cet article propose de repenser les récits enseignés concernant l'histoire territoriale argentine et de remettre en question les idées reçues sur l'imagerie construite autour de la «perte de territoires».A recently enacted law (2010 determines the obligatory use of so-called “bi-continental map” (the continental part and the Antarctic sector disclaimed by the Argentinean state are displayed at the same scale for all the educative levels. As a result of this norm, the political map of Argentina will present a new silhouette, which, after repeated reproduction, will impose this renewed standardized aspect. This way to modify the political map through legal devices is not completely new: from the second half of the nineteenth century, several educative, diplomatic and cultural policies were implemented in order to affect the ways of visualizing, thinking and conceiving the national territory. By examining the history of the political map of Argentina, this article proposes to rethink the ways in

  17. Estado actual del marco legal argentino para la caza, producción y comercialización del Lagarto overo (Tupinambis spp. Current state of the Argentine legal framework for the hunting, production and commercialization of the Tegu lizard (Tupinambis spp

    Directory of Open Access Journals (Sweden)

    C.P Basso

    2005-12-01

    Full Text Available La legislación argentina que regula el comercio y aprovechamiento del Tupinambis es de carácter general en la mayoría de las provincias. En algunas, la legislación es más específica, fijando la temporada de caza, tamaño mínimo de los ejemplares y requisitos a reunir por los cazadores. A nivel nacional, la Secretaría de Recursos Naturales y Ambiente Humano es la responsable de la normativa general, adherida por la mayoría de las provincias y ajustada a las condiciones particulares de cada una de ellas. También es responsable de cuantificar el volumen de cueros a exportar, fijar los cupos de cada provincia, el marco regulatorio y documentación a cumplimentar los exportadores. El Proyecto Tupinambis, del Programa Nacional de Manejo y Uso Sustentable de Especies Silvestres, es una herramienta fundamental para el aprovechamiento racional de esta especie. La diversidad de normas y regulaciones, la superposición de muchas de ellas y de las autoridades de aplicación determinan la conveniencia de contar con una normativa global unificada, completa, sencilla y clara que permita desarrollar una producción eficiente desde el punto de vista tecnológico y económico, y sustentable en el ámbito ecológico. Esto hace necesario una revisión y propuesta de una nueva normativa, adecuada a las necesidades actuales.The legislation which regulates the commercialization and use of tegu lizard is very general in most Argentine provinces. In some of them, the legislation is more specific and establishes the hunting season, minimum size of the prey and requirements to be fulfilled by hunters. At national level, The Natural Resources and Human Environment Secretary is responsible for the general guidelines, adopted by the majority of the provinces and adjusted to the particular conditions of each of them. This organization is also responsible for quantifying the volume of leather units to export, fixing the quota for each province, the regulatory

  18. Movimientos prehistóricos y recientes en la intraplaca argentina a la latitud 33º s, Falla Las Lagunas, Sampacho, Córdoba Prehistoric and recent movements in the Argentine intraplate, at the latitude 33º S, Las Lagunas fault, Sampacho, Córdoba

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    Guillermo Luis Sagripanti

    2011-12-01

    Full Text Available En la intraplaca argentina a la latitud 33º S, región sur de la provincia de Córdoba se ubica la falla Las Lagunas. Esta estructura con probada actividad cuaternaria posee antecedentes de fuertes paleoterremotos, de terremotos históricos y sismicidad asociada frecuente. La aplicación de métodos paleosismológicos y geodésicos han permitido cuantificar los movimientos prehistóricos y recientes de la falla. Los estudios paleosismológicos realizados mediante la excavación de trincheras perpendiculares a la falla, han permitido relevar deformaciones cosísmicas correspondientes a cuatro paleoterremotos ocurridos en el Holoceno superior. La información relevada permitió estimar el desplazamiento vertical de la falla de 0,20 mm/año y el horizontal de 0,16 mm/año. En la sección Chañaritos de esta falla se emplazó una red geodésica con el fin de detectar y medir movimientos horizontales y verticales lentos e imperceptibles. La red está formada por seis estaciones distribuidas en el bloque hundido y elevado de la falla. Las mediciones de precisión fueron realizadas con una estación total electrónica. Se realizaron cuatro mediciones entre los años 2003 y 2010, cuyos datos han permitido interpretar una modificación en el sentido del movimiento de rumbo y un desplazamiento cosísmico de 37 mm, que se adjudica a un evento natural único como el terremoto de M 8,8 de Concepción, Chile de 2010.Las Lagunas fault is located in the argentine intraplate at latitude 33ºS, in the southern region of the Cordoba province. This structure with proved Quaternary activity has records of strong paleoearthquakes, historical earthquakes, and associated frequent seismicity. Paleoseismic and geodesic methods have permitted to quantify the prehistoric and recent movements of the fault. Paleoseismic studies done in trenches across the fault, have permitted the recognition of coseismic deformation corresponding to four paleoearthquakes occurred in the

  19. Governance and sustainability of the Argentine Complementary Currency Systems

    NARCIS (Netherlands)

    G.M. Gomez (Georgina)

    2012-01-01

    textabstractThe Redes de Trueque (RT) thrived during the economic crisis of 2001 – 2002 in Argentina and still stand out as one of the largest Complementary Currency System in the world. These local exchange networks reach a large scale during times of severe economic distress, but as large non-stat

  20. [Children enteroparasitosis in north east Argentine urban area].

    Science.gov (United States)

    Milano, Alicia M F; Oscherov, Elena B; Palladino, Alberto C; Bar, Anibal R

    2007-01-01

    The aim of the present investigation was to evaluate the importance of enteroparasitosis in a young urban population. The relationship between enteroparasitosis in this population and biological and environmental conditions was established for 113 infants between 0 and 14 years. Serial stool samples were analyzed and Graham tests were performed in each infant. The degree of nutrition of each infant was also assessed. Environmental data were collected via semi-structured surveys. Soil samples were tested to determine the degree of soil contamination. The following species were identified: Blastocystis hominis, Enterobius vermicularis, coccidios, Giardia intestinalis, hookworms, Strongyloides stercoralis, Trichuris trichura, Ascaris lumbricoides, Entamoeba coli, Endolimax nana and Taenia sp. Children infection prevalence was 73.5%. The frequency of enteroparasitosis was largest in the population from 3 to 8 years. The homes of the children analyzed were brick houses with tin roof and access to tap water. A 79.5% of these houses had bathrooms. The remaining used outdoors latrines. In 95.5% of these houses, the residents lived with one or more dogs and cats. The soil collected from nine houses was contaminated with infectious forms of Toxocara canis and ancilostomideos. The relationship between parasitosis and latrines and overcrowding was verified. Five cases of malnutrition were detected (4.4%). The relevance of physical and cultural factors in relation to enteric parasitosis suggests that the pharmacological treatment should be accompanied with preventive measures regarding hygiene and proper elimination of human and pet faeces.

  1. Human Microbiota of the Argentine Population- A Pilot Study

    Science.gov (United States)

    Carbonetto, Belén; Fabbro, Mónica C.; Sciara, Mariela; Seravalle, Analía; Méjico, Guadalupe; Revale, Santiago; Romero, María S.; Brun, Bianca; Fay, Marcelo; Fay, Fabián; Vazquez, Martin P.

    2016-01-01

    The human microbiota is the collection of microorganisms living in or on the human body. An imbalance or dysbiosis in these microbial communities can be associated with a wide variety of human diseases (Petersen and Round, 2014; Pham and Lawley, 2014; Zaura et al., 2014). Moreover, when the microbiota of the same body sites is compared between different healthy individuals, specific microbial community features are apparent (Li et al., 2012; Yatsunenko et al., 2012; Oh et al., 2014; Relman, 2015). In addition, specific selective pressures are found at distinct body sites leading to different patterns in microbial community structure and composition (Costello et al., 2009; Consortium, 2012b; Zhou et al., 2013). Because of these natural variations, a comprehensive characterization of the healthy microbiota is critical for predicting alterations related to diseases. This characterization should be based on a broad healthy population over time, geography, and culture (Yatsunenko et al., 2012; Shetty et al., 2013; Leung et al., 2015; Ross et al., 2015). The study of healthy individuals representing different ages, cultural traditions, and ethnic origins will enable to understand how the associated microbiota varies between populations and respond to different lifestyles. It is important to address these natural variations in order to later detect variations related to disease. PMID:26870014

  2. Psychological assessment of psychological well being in Argentine adolescent students

    OpenAIRE

    Martina Casullo, María; Castro Solano, Alejandro

    2013-01-01

    The main goal of this study is to develop a brief scale to assess perceived well being in adolescentpopulation. Besides verifying psychometric properties, we identified individual differences between genders, context and age. Participants were adolescent students recruited in three different areas of Argentina (Metropolitan area -Buenos Aires-, Norwest area- Tucuman- and Southwest area­ Patagonia- ). aged 13 Th. 18. Instruments administered consisted of BIEPS (well being scale) other classics...

  3. Correlation of methane emissions with cattle population in Argentine Pampas

    Science.gov (United States)

    Huarte, A.; Cifuentes, V.; Gratton, R.; Clausse, A.

    2010-07-01

    Satellite cartography of atmospheric methane concentrations during 2003-2004 is applied to a systematic top-down methodology to quantify large scale sources and sinks of this important greenhouse gas. Patterns of methane anomalies over South America below latitude 22 S and an assessment of the emissions from the Buenos Aires Province of Argentina are reported. The latter contains the main cattle livestock of the country together with a variety of surface conditions, both natural and man-modified, influencing methane emissions. It was found that anomalies in methane concentrations may be correlated to emission rates by a simple box accumulation-sweeping model validated by recurrent weather conditions. The model shows that the methane emission rates of the Buenos Aires Province are positively correlated with the cattle livestock corresponding to values of (190 ± 40) g d -1 per cattle head.

  4. The first record of Lutzomyia longipalpis in the Argentine northwest

    Directory of Open Access Journals (Sweden)

    Andrea Gomez Bravo

    2013-12-01

    Full Text Available In 2004, the urban presence of Lutzomyia longipalpis was recorded for the first time in Formosa province. In 2006, the first autochthonous case of human urban visceral leishmaniasis (VL was recorded in Misiones in the presence of the vector, along with some canine VL cases. After this first case, the vector began to spread primarily in northeast Argentina. Between 2008-2011, three human VL cases were reported in Salta province, but the presence of Lu. longipalpis was not recorded. Captures of Phlebotominae were made in Tartagal, Salta, in 2013, and the presence of Lu. longipalpis was first recorded in northwest Argentina at that time. Systematic sampling is recommended to observe the distribution and dispersion patterns of Lu. longipalpis and consider the risk of VL transmission in the region.

  5. Chemical signals associated with life inhibit necrophoresis in Argentine ants

    OpenAIRE

    Choe, Dong-Hwan; Millar, Jocelyn G.; Rust, Michael K.

    2009-01-01

    One of the most conspicuous and stereotyped activities of social insects such as ants and honey bees is necrophoresis, the removal of dead colony members from the nest. Previous researchers suggested that decomposition products such as fatty acids trigger necrophoric behavior by ant workers. However, fatty acids elicit both foraging and necrophoric responses, depending on the current nest activities (e.g., feeding or nest maintenance). Furthermore, workers often carry even freshly killed work...

  6. The Malvinas Conflict: Argentine Practice of the Operational Art

    Science.gov (United States)

    1990-05-25

    January 1983), p. 175. 5. Clausewitz, p. IG4. E. Comision de analisis y evaluacion de las responrsa- bilidades politicas y estrategico militares en el...War. ed. arnd trans by Micha:2 Howard and Peter Paret. P;-irnceto:- Prir ce t on, iv..ity Press, 1976. Comnision de Analisis y Evaluacion de las

  7. Entangled inequalities, divergent struggles: migration and the Argentine textile industry

    Directory of Open Access Journals (Sweden)

    Sergio Caggiano

    2014-09-01

    Full Text Available Despite the economic recovery that followed the 2001-2002 crisis in Argentina, sectors that rely on a significant migrant worker presence, such as textiles, have maintained and consolidated previously-existing forms of exploitation and discrimination. In this context, trade unions and other civil society actors are fighting against the inequalities that affect Bolivian migrant workers in the textile industry in Buenos Aires and La Plata. This article seeks to understand some of the limitations of that struggle. Such limitations relate to the difficulty of acting on entangled inequalities, and respond to the seemingly irreconcilable forms of association in terms of class, nationality or ethnicity of these organisations, which generate divergent characterisations of the inequalities and of the actors involved.

  8. How to tell the History. Proximity strategies on Argentine television

    Directory of Open Access Journals (Sweden)

    Elena Galán Fajardo

    2014-11-01

    Full Text Available This paper focuses on the analysis of a television documentary Algo habrán hecho (por la historia argentina, broadcast on Telefe and Canal 13, between 2005 and 2008. The interrelationship of discursive tools and informative and evocation strategies are very relevant in this text. Its effectiveness is related to a combined use of resources that appeal to different meanings of proximity, with the objective to make accessible the history to a popular audience.

  9. Extremist Media and the Rise of Terrorism: The Argentine Case.

    Science.gov (United States)

    Day, J. Laurence

    In the 20 months that Isabel Peron served as the first female chief of state of a South American country, the mass media in Argentina underwent extreme stress. The Montoneros, a militant leftist organization, called for mass demonstrations against the orthodox Peronist people in their tabloid "La Causa Peronista." The tabloid's…

  10. Extracting DNA of nematodes communities from Argentine Pampas agricultural soils

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    Eduardo A. Mondino

    2015-06-01

    Full Text Available We examined four strategies (Tris/EDTA, sodium dodecyl sulfate, Chelex 100 resin and cetyltrimethylammonium bromide -CTAB- for extracting nucleic acid (DNA from communities of nematodes. Nematodes were isolated from an agricultural area under different management of long-term crop rotation experiment from Argentina during three seasons. After DNA extraction, Polymerase Chain Reaction-amplifications were performed and considered as indicators of successful DNA extraction. The CTAB combined with proteinase K and phenol-chloroform-isoamyl alcohol was the unique successful method because positive amplifications were obtained by using both eukaryotic and nematode specific primers. This work could contribute to biodiversity studies of nematodes on agroecosystems.

  11. Extracting DNA of nematodes communities from Argentine Pampas agricultural soils.

    Science.gov (United States)

    Mondino, Eduardo A; Covacevich, Fernanda; Studdert, Guillermo A; Pimentel, João P; Berbara, Ricardo L L

    2015-01-01

    We examined four strategies (Tris/EDTA, sodium dodecyl sulfate, Chelex 100 resin and cetyltrimethylammonium bromide -CTAB-) for extracting nucleic acid (DNA) from communities of nematodes. Nematodes were isolated from an agricultural area under different management of long-term crop rotation experiment from Argentina during three seasons. After DNA extraction, Polymerase Chain Reaction-amplifications were performed and considered as indicators of successful DNA extraction. The CTAB combined with proteinase K and phenol-chloroform-isoamyl alcohol was the unique successful method because positive amplifications were obtained by using both eukaryotic and nematode specific primers. This work could contribute to biodiversity studies of nematodes on agroecosystems.

  12. Native supercolonies of unrelated individuals in the invasive Argentine ant

    DEFF Research Database (Denmark)

    Pedersen, Jes Søe; Krieger, Michael J. B.; Vogel, Valérie;

    2006-01-01

    supercolonies. Genetic differentiation between native supercolonies was very high for both nuclear and mitochondrial markers, indicating extremely limited gene flow between supercolonies. The only important difference between the native and introduced populations was that supercolonies were several orders...... introduction into new habitats. Here we test this basic assumption by conducting a detailed genetic analysis of four native and six introduced populations with five to 15 microsatellite loci and one mitochondrial gene. In contrast to the assumption that native populations consist of family-based colonies...... with related individuals who are aggressive toward members of other colonies, we found that native populations also form supercolonies, and are effectively unicolonial. Moreover, just as in introduced populations, the relatedness between nestmates is not distinguishable from zero in these native range...

  13. Ten years of Argentine Foreign Policy in "International Relations"

    OpenAIRE

    Simonoff, Alejandro César

    2002-01-01

    Con motivo de haberse cumplido recientemente el décimo aniversario de la revista Relaciones Internacionales, este artículo estudia cómo se analiza la política exterior argentina en sus páginas. Para ello, el autor analiza cuáles han sido los temas de política exterior abordados y qué tratamiento se les ha otorgado, con el fin de develar si existe en la publicación, una única o varias visiones sobre los mismos. On the tenth anniversary of the "Relaciones Internacionales" magazine, this artc...

  14. Experiences of argentine companies in implementations of information systems

    Directory of Open Access Journals (Sweden)

    Maria Alejandra Masclef

    2007-01-01

    Full Text Available This paper analyzes, in the context of the theoretical frame, the types of Information Systems and the Enterprise Applications, considered for the general performance of the organization in its different functional levels and their relationships with clients and suppliers. It also analyzes the evolution of the area of Information Systems and Information Technology in the Organizations and their interaction with their mission and strategy. It considers, in addition, the maturity of the companies in using transactional data to transform them into information and knowledge for the organization. Some cases are analyzed for finding recurrences that allow knowing which developments and implementations of Information Systems (IS and Information Technologies (IT were carried out in Argentina, during the reactivation period that followed the economical and institutional crises of years 2001 - 2002.

  15. THE EMOTIONAL EXPRESSIVITY SCALE VALIDATION IN ARGENTINE UNIVERSITY STUDENTS

    Directory of Open Access Journals (Sweden)

    Sebastián Eduardo Piemontesi

    2012-06-01

    Full Text Available Emotional Expressivity, defined as the ability to express emotional states in ob-servable behaviors, is essential for individuals healthy functioning, and was po -sitively associated with wellbeing, self-esteem, life satisfaction and negatively related with diseases such as schizophrenia, depression, personality disorders and post traumatic stress disorder. To answer the need for an instrument which can evaluate this construct in a valid and reliable manner, this study explored the psychometric properties of the Emotional Expressivity Scale adapted into Spa-nish. For this reason, an exploratory factor analysis replicating the one-dimension solution was performed, a coefficient alpha of .94 was obtained, gender differen -ces with higher scores in women, and test-retest coefficients for a 4-week interval with values of .88 in women and .86 in men. Additionally, confirmatory factor analyzes were performed separately for each gender obtaining appropriate va-lues for all fit indices, but not in men. Finally the results, scope and limitations of this paper are discussed.

  16. Current trends in Latin America and the Argentine perspective

    Energy Technology Data Exchange (ETDEWEB)

    Laredo, V.G. [SOCMA Americana, Buenos Aires (Argentina)

    1992-12-31

    The authors discusses the changes that are taking place in Argentina as well as in all of Latin America today -- privatization, deregulation, and the modernization of the economy, changes which will serve to strengthen the governments and provide a better quality of life for all of them. He gives an insight into the factors which helped bring about these changes, the support they are receiving, the problems which persist, and the measures that still must be taken so that these positive changes remain in place. He offers some useful information that will perhaps contribute to their understanding of the vast area which he refers to as Latin America, and more specifically, gives a thumbnail sketch of what is happening today in the Republic of Argentina. For many years now, Latin American leaders have travelled to other parts of the world and spoken about the plans and expectations for the region`s future. When these well-intentioned projects and plans never materialized, partners and supporters in the United States and other countries were frustrated and disappointed by the failure to make things work. The author`s intention here today is to describe things as they are, not as they might be, to tell about what is already happening in the sphere of business and growth of the economies in Latin America.

  17. Seismicity and average velocities beneath the Argentine Puna Plateau

    Science.gov (United States)

    Schurr, B.; Asch, G.; Rietbrock, A.; Kind, R.; Pardo, M.; Heit, B.; Monfret, T.

    A network of 60 seismographs was deployed across the Andes at ∼23.5°S. The array was centered in the backarc, atop the Puna high plateau in NW Argentina. P and S arrival times of 426 intermediate depth earthquakes were inverted for 1-D velocity structure and hypocentral coordinates. Average velocities and υp/υs in the crust are low. Average mantle velocities are high but difficult to interpret because of the presence of a fast velocity slab at depth. Although the hypocenters sharply define a 35° dipping Benioff zone, seismicity in the slab is not continuous. The spatial clustering of earthquakes is thought to reflect inherited heterogeneties of the subducted oceanic lithosphere. Additionally, 57 crustal earthquakes were located. Seismicity concentrates in the fold and thrust belt of the foreland and Eastern Cordillera, and along and south of the El Toro-Olacapato-Calama Lineament (TOCL). Focal mechanisms of two earthquakes at this structure exhibit left lateral strike-slip mechanisms similar to the suggested kinematics of the TOCL. We believe that the Puna north of the TOCL behaves like a rigid block with little internal deformation, whereas the area south of the TOCL is weaker and currently deforming.

  18. Argentine folk medicine: genotoxic effects of Chenopodiaceae family.

    Science.gov (United States)

    Gadano, A B; Gurni, A A; Carballo, M A

    2006-01-16

    Chenopodium ambrosioides L. and Chenopodium multifidum L. (Chenopodiaceae), common name: Paico, are medicinal plants. They are aromatic shrubs growing in South America. For centuries, they have been used due to its medicinal properties. However, there are few reports in literature about the genotoxic effects of these plants. There for, the aim of these work is the evaluation of genetic damage induced by decoction and infusion of this plants which were assayed in different concentrations (1, 10, 100, 1,000 microL extract/mL culture), by addition of the extract to human lymphocyte cell cultures, negative controls were included. The endpoints evaluated were chromosomal aberrations (CA), sister chromatid exchanges (SCE), cell proliferation kinetics (CPK) and mitotic index (MI). The repeated measure analysis of variance was used for statistic evaluation of the results. The results showed: (a) statistical increase in the percentage of cells with CA and in the frequency of SCE when cultures were exposed to both aromatic plants, (b) a decrease in MI of both Paicos assayed, although no modification in the CPK values was observed, (c) no effect was noticed in the analysis of Chenopodium album L., which was used as negative control of the essential oil. These results suggest a cyto and genotoxic effect of Chenopodium ambrosioides and Chenopodium multifidum aqueous extracts related to the essential oil of the plant (as Chenopodium album did not perform).

  19. Argentine Civil-Military Relations. From Alfonsin to Menem

    Science.gov (United States)

    2002-11-01

    military and organized labor (refer again to praetorianism and movimentismo).73 Although the political economy approach offers significant insights...94 The document would not definitively establish the rule of law (estado de derecho ) over the rule of force. The forms of representative democracy...followed into a major political role based on his mobilization of urban labor . As Minister of Labor in the Edelmiro Farrell government (1944–1945), he

  20. Argentine drilling equipment to go on auction block

    Energy Technology Data Exchange (ETDEWEB)

    1992-04-27

    Yacimientos Petroliferos Fiscales (YPF) is preparing to sell all state owned drilling rigs and related assets as part of a plan to privatize Argnetina's oil and gas industry. YPF expects to offer the equipment to private companies by summer in a sealed bid auction in Buenos Aires. More than 30 mostly late model U.S. and Romanian rigs rated to 1,800-7,000 m will be included in the sale. Drilling contracts covering all major Argentina exploration areas will be offered with many of the rigs being sold. This paper reports that the YPF sale will include well completion units, drill pipe and collars, large equipment yards, shops, and warehouses, and possibly the largest inventory of fishing tools in South America, says a company helping to organize the sale. YPF will set up a data room in Buenos Aires to provide information about drilling, conditions, rigs and equipment, and other assets.

  1. Quaternary Glaciations in the Rio Mendoza Valley, Argentine Andes

    Science.gov (United States)

    Espizua, Lydia E.

    1993-09-01

    In the Rio Mendoza valley, five Pleistocene drifts and one Holocene drift are distinguished by multiple relative-age criteria, including surface-rock weathering, development of rock varnish, moraine morphology, soil-profile development, and stratigraphic relationships. Several absolute ages suggest a preliminary chronology. During the oldest (Uspallata) glaciation, a system of valley glaciers flowed 110 km from the Andean drainage divide and 80 km from Cerro Aconcagua to terminate at 1850 m. Drift of this ice advance is older than a widespread tephra dated by fission-track at 360,000 ± 36,000 yr. During the Punta de Vacas advance, ice terminated at 2350 m, while during the subsequent Penitentes advance, the glacier system ended at 2500 m. A travertine layer overlying Penitentes Drift has U-series age of 24,200 ± 2000 yr B.P. The distribution of Horcones Drift, which is inferred to represent the last glacial maximum, delimits an independent ice stream that flowed 22 km down Horcones valley to 2750 m. A later readvance (Almacenes) reached 3250 m. Confluencia Drift is considered to be Neoglacial in age and extends downvalley to 3300 m. The moraine sequence is compared with those studied by Caviedes (1972) along Rio Aconcagua on the Chilean flank of the Andes.

  2. History of Argentine surgery, abaut general surgery residents

    Directory of Open Access Journals (Sweden)

    A. Jankilevich

    2015-04-01

    Full Text Available This work, as its title indicates, is targeted to young general surgery residents, who have been kind enough to open their journal for this collaboration. A gesture that I appreciate and I’ll try to give back narrating some facts of the first century of our independence. The story starts a few decades before 1810, especially with the institution of the Viceroyalty of Rio de la Plata, and ends at 1880, when indigenous peoples are submited, traditional estate, the gaucho gerrillas and the last caudillos (the pattern and the National Guards pawns are extinguished, agriculture and industry develops, the railroad replaces the wagons, is mass immigration and techniques of exploitation of natural resources strengthens social and economic structure, policy that starts the National Organization bequeathed to us Eighty generation. Two figures are presented as conclusion and synthesis of this period and serve as a bridge that starts from 1880: Francisco Javier Muñiz and Manuel Augusto Montes de Oca. The first such example of a surgeon in the wars of independence, internal frontier garrisons, the vicissitudes of the early university studies and creative work in the solitude of the peoples of campaign not only providing a commendable assistance but researching and discovering the first indigenous smallpox vaccine, rectifying errors jennerianos concept of cows pox disease of horses were infected, combating epidemics and initiating scientific research, natural sciences and producing valued communications throughout the world, as in the case of Darwin himself, who makes the research Muñiz as one of the foundations of his theory of evolution of species. The second: Montes de Oca, is the archetype and the teacher of those surgeons of the eighties generation. He gather in his person a more advanced knowledge and understanding of their subject, son of exile and disagreements before the national organization, contact to Europe, but attached to the reality of their land, teaches its students to follow their own observations and experiences at the patient bedside. Introducing the antiseptic method of Lister says while alone does not solve all the problems of hospital infection, noting however, along with anesthesia and hemostasis is the most revolutionary advance so far, and adds the microscope and use of intravenous catheters

  3. [Why are there few publications by the Argentine gastroenterology? Considerations on a bibliometric analysis of Argentine publications on gastroenterology].

    Science.gov (United States)

    Barreyro, Fernando J; Krabshuis, Justus; Planzer del Campo, Marcela; Bai, Julio C

    2009-03-01

    The publication of scientific findings is the main way to communicate advances. Our aim was to perform a bibliometric and comparative analysis of the Argentinean gastroenterological research output. We analyzed Argentinean gastroenterological publications selectively retrieved from LILACS (between years 1982-2006) and EMBASE (1996-2007) databases by means of specially constructed filter based on author address and subject headings. The global Argentinean scientific research output is far below that of developed countries and has been affected in direct manner by economic, political and social disturbances in the country. The gastroenterological research output from Argentina represent about 6% of national biomedical research. While 54% belongs to gastroenterology and 46% to hepatology, 65% are based on clinical research and 67% were originally contributions. Only 11% have been published in high impact factor journals. The comparative analysis within countries with health indicators similarities has shown a low biomedical and gastroenterology research output, however, the rate of acceptance at the 18 top gastroenterological journals is acceptable (15%). The contributions of registered specialists were lower for gastroenterologists compared with those from hepatologists (8.7% and 16.4% respectively). The research projects at public hospital funded by the pharmaceutical industry overcome those funded independently. Indeed, it seems that the independent research is being progressively replaced by that supported by the industry due to economic benefits for researchers even when there is a very low participation rate in publications (3%) by Argentinean researchers. We conclude that the Argentinean biomedical and gastroenterological research output is scanty compared with developed countries and countries with comparable health indicators. Our analysis suggests that efforts must be taken to attain objectives directed to develop and improve the Argentinean biomedical and gastroenterological scientific work and publication.

  4. O ingresso da psicanálise no sistema de saúde pública na Argentina El ingreso del psicoanálisis en el sistema de salud pública de la Argentina The arrival of psychoanalysis in the Argentine public health system

    Directory of Open Access Journals (Sweden)

    Alejandro Antonio Dagfal

    2009-09-01

    alternativa de formación y de atención psicoanalítica más allá de la asociación oficial, que comenzó a perder el monopolio de los "usos legítimos" del psicoanálisis. En este trabajo se estudia particularmente el caso del servicio de psicopatología del Hospital Lanús, dirigido por Mauricio Goldenberg entre 1956 y 1972, ya que ilustra muy bien este proceso de expansión y transformación del psicoanálisis. Se ha utilizado una metodología clásica en el campo de la historia, basada en el análisis de textos y documentos referentes a la época estudiada.After 1955, there was in Argentina a social and cultural renewal, in which psychoanalysis ceased to be a private practice, limited to the wealthy residents of Buenos Aires. Freudian ideas arrived to new institutional settings, where they suffered several transformations allowing them to enlarge its public. For example, the use that was made, in certain public institutions, of some techniques based on psychoanalysis, such as group psychotherapy, involved a remarkable multiplication of the number of patients that were treated. At the same time, this practice stemming from psychoanalysis was no longer an exclusive right of the members of the Argentine Psychoanalytic Association, for it could be carried out by physicians and psychologists beyond its ranks. Thus, an alternative space for analytic training and treatment was created, and the official association begun to lose its monopole over the "legitimate uses" of psychoanalysis. In this paper we focus in the case of the Psychopathology Service of Lanús Hospital, directed by Mauricio Goldenberg Between 1956 and 1972. It is a good example of this process of expansion and transformation of a "plebeian" psychoanalysis. The methodology that has been used is a classical one in the field of history, which is based on the analysis of texts and documents referring to the period of study.

  5. Radiation Testing of a Low Voltage Silicone Nuclear Power Plant Cable.

    Energy Technology Data Exchange (ETDEWEB)

    White II, Gregory Von; Schroeder, John Lee.; Sawyer, Patricia Sue.; Wichhart, Derek; Mata, Guillermo Adrian; Zorrilla, Jorge; Bernstein, Robert

    2014-09-01

    This report summarizes the results generated in FY13 for cable insulation in support of the Department of Energy's Light Water Reactor Sustainability (LWRS) Program, in collaboration with the US-Argentine Binational Energy Working Group (BEWG). A silicone (SiR) cable, which was stored in benign conditions for %7E30 years, was obtained from Comision Nacional de Energia Atomica (CNEA) in Argentina with the approval of NA-SA (Nucleoelectrica Argentina Sociedad Anonima). Physical property testing was performed on the as-received cable. This cable was artificially aged to assess behavior with additional analysis. SNL observed appreciable tensile elongation values for all cable insulations received, indicative of good mechanical performance. Of particular note, the work presented here provides correlations between measured tensile elongation and other physical properties that may be potentially leveraged as a form of condition monitoring (CM) for actual service cables. It is recognized at this point that the polymer aging community is still lacking the number and types of field returned materials that are desired, but Sandia National Laboratories (SNL) -- along with the help of others -- is continuing to work towards that goal. This work is an initial study that should be complimented with location-mapping of environmental conditions of Argentinean plant conditions (dose and temperature) as well as retrieval, analysis, and comparison with in- service cables.

  6. A situação de trabalho do pessoal de enfermagem no contexto de um hospital argentino: um estudo sob a ótica da ergonomia La situación de trabajo del personal de enfermería en el contexto de un hospital argentino: un estudio sobre la óptica de la ergonomía The work situation of the nursing personnel from an Argentine hospital: a study based on ergonomics

    Directory of Open Access Journals (Sweden)

    Azucena Del Valle Royas

    2001-01-01

    Full Text Available Com o objetivo de caracterizar a situação de trabalho do pessoal de enfermagem num hospital Argentino através da identificação das características dos trabalhadores, das atividades executadas e do ambiente laboral, utilizou-se como pressuposto metodológico a Ergonomia. Buscando o diagnóstico da situação de trabalho foram realizadas entrevistas com 74 trabalhadores, sendo 17 enfermeiros e 57 auxiliares de enfermagem. Por meio dos resultados obtidos, constatou-se que a situação de trabalho estudada apresenta problemas relacionados a organização do trabalho, divisão de tarefas, falta de política voltada à melhoria da capacitação profissional e a segurança no trabalho, promoção à saúde dos trabalhadores, adequação de materiais e equipamentos. Com base da Ergonomia de correção são apresentadas sugestões.Con el objetivo de caracterizar la situación de trabajo del personal de enfermería en un hospital argentino a través de la identificación de las características de los trabajadores, de las actividades ejecutadas y del ambiente laboral, se utilizó como presupuesto metodológico la Ergonomía. Buscando el diagnóstico de la situación de trabajo fueron realizadas entrevistas con 74 trabajadores, siendo 17 enfermeros y 57 auxiliares de enfermería. Por medio de los resultados obtenidos, se constato que la situación de trabajo estudiada presente problemas relacionados con la organización del trabajo, división de tareas, falta de política orientada al mejoramiento de la capacitación profesional y la seguridad en el trabajo, promoción a la salud de los trabajadores, adecuación de materiales y equipos. Con base en la Ergonomía de corrección se presentan sugerencias.The present study aimed at characterizing the work situation of the nursing personnel from an Argentine Hospital through the identification of the characteristics of the workers, the executed activities and the work environment, using the methodological

  7. Distribución estival del stock sureño de la merluza argentina (Merluccius hubbsi Marini, 1933 en el área de cría (44°-47°S en relación con parámetros oceanógraficos (1996-2001 Summer distribution of the southern stock of the Argentine hake (Merluccius hubbsi Marini, 1933 in the nursery area (44°-47°S in relation to oceanographic parameters (1996-2001

    Directory of Open Access Journals (Sweden)

    Elena Louge

    2011-01-01

    Full Text Available Se analizaron las variables temperatura y salinidad en verano, durante el período 1996-2001 en el área de cría del efectivo patagónico de la merluza argentina Merluccius hubbsi. Estas variables oceanógraficas se relacionaron con las variaciones en la abundancia de la población, a través de un modelo lineal general. Se determinaron los valores medios y las anomalías de temperatura y salinidad de fondo. Las anomalías térmicas positivas más extremas se produjeron en 1999 y 2000, mientras que el año más frío fue 1996. La anomalía de salinidad más baja se registró en 1996 y la más alta en el 2000. La merluza se concentró principalmente en las zonas de gradientes térmicos y salinos Los juveniles se hallaron preferentemente en el Golfo San Jorge en aguas con temperaturas entre 8º y 10°C y salinidades entre 33,2 y 33,6 y los adultos dentro y fuera del mismo, con temperaturas de fondo entre 8º y 12°C y salinidades 33,2 y 33,5. Las mayores densidades de juveniles se hallaron en aguas de menor profundidad, con valores elevados de salinidad y menores valores de temperatura respecto de los adultos. Estos se concentraron tanto en el sector norte del golfo y en la Bahía Camarones, en aguas con relativamente alta temperatura y escasa profundidad, como sobre la plataforma frente al golfo, donde las aguas tienen menor salinidad debido a la deriva de la Corriente Patagónica de aguas diluidas. No se observaron cambios en la distribución de la población en los años con anomalías ambientales marcadas.Summer temperature and salinity data in the nursery ground of the Patagonian stock of Argentine hake Merluccius hubbsi recorded from 1996 to 2001 were analyzed. These oceanographic variables were related to variations in the hake population abundance by means of a general linear model. Mean values and anomalies of bottom temperatures and salinity fields were determined. The most extreme positive thermal anomalies occurred in 1999 and 2000

  8. Generation of Gridded Daily Weather Ensembles for Decision Support in the Argentine Pampas

    Science.gov (United States)

    Verdin, A.; Rajagopalan, B.; Kleiber, W.; Katz, R. W.; Podesta, G. P.

    2014-12-01

    We introduce a stochastic weather generator for the variables of minimum temperature, maximum temperature, and precipitation occurrence. Temperature variables are modeled in vector autoregressive framework, conditional on precipitation occurrence. Precipitation occurrence arises via a probit model, and both temperature and occurrence are spatially correlatedusing spatial Gaussian processes. Additionally, local climate is included by spatially-varying model coefficients, allowing spatially-evolving relationships between variables. The method is illustrated on a network of stations in the Pampas region of Argentina where nonstationary relationships and historical spatial correlation challenge existing approaches. The covariancestructure of this network of stations is then used to produce daily gridded weather scenarios which can be used to drive hydrologic models. Inclusion of other covariates such as seasonal total precipitation and global climate drivers allows the potential for decadal projections, an increasingly useful tool for decision support.

  9. A first shallow firn-core record from Glaciar La Ollada, Cerro Mercedario, central Argentine Andes

    Science.gov (United States)

    Bolius, David; Schwikowski, Margit; Jenk, Theo; Gäggeler, Heinz W.; Casassa, Gino; Rivera, Andrés

    In January 2003, shallow firn cores were recovered from Glaciar Esmeralda on Cerro del Plomo (33°14‧ S, 70°13‧ W; 5300 ma.s.l.), central Chile, and from Glaciar La Ollada on Cerro Mercedario (31°58‧ S, 70°07‧ W; 6070 ma.s.l.), Argentina, in order to find a suitable archive for paleoclimate reconstruction in a region strongly influenced by the El Niño-Southern Oscillation. In the area between 28° S and 35° S, the amount of winter precipitation is significantly correlated to the Southern Oscillation Index, with higher values during El Niño years. Glaciochemical analysis indicates that the paleo-record at Glaciar La Ollada is well preserved, whereas at Glaciar Esmeralda the record is strongly influenced by meltwater formation and percolation. A preliminary dating of the Mercedario core by annual-layer counting results in a time-span of 17 years (1986-2002), yielding an average annual net accumulation of 0.45 m w.e.

  10. Therapeutic Argentine Tango Dancing for People with Mild Parkinson’s Disease: A Feasibility Study

    OpenAIRE

    Blandy, Laura M.; Winifred A Beevers; Fitzmaurice, Kerry; Meg E. Morris

    2015-01-01

    Background Individuals living with Parkinson’s disease (PD) can experience a range of movement disorders that affect mobility and balance and increase the risk of falls. Low health-related quality of life, depression, and anxiety are more common in people with PD than age-matched comparisons. Therapeutic dance is a form of physical activity believed to facilitate movement and therapy uptake. As well as being enjoyable, dancing is thought to improve mobility, balance, and well-being in some...

  11. Essential Oils of Plants as Biocides against Microorganisms Isolated from Cuban and Argentine Documentary Heritage.

    Science.gov (United States)

    Borrego, Sofía; Valdés, Oderlaise; Vivar, Isbel; Lavin, Paola; Guiamet, Patricia; Battistoni, Patricia; Gómez de Saravia, Sandra; Borges, Pedro

    2012-01-01

    Natural products obtained from plants with biocidal activity represent an alternative and useful source in the control of biodeterioration of documentary heritage, without negative environmental and human impacts. In this work, we studied the antimicrobial activity of seven essential oils against microorganisms associated with the biodeterioration of documentary heritage. The essential oils were obtained by steam distillation. The antimicrobial activity was analyzed using the agar diffusion method against 4 strains of fungi and 6 bacterial strains isolated from repositories air and documents of the National Archive of the Republic of Cuba and the Historical Archive of the Museum of La Plata, Argentina. Anise and garlic oils showed the best antifungal activity at all concentrations studied, while oregano oil not only was effective against fungi tested but also prevented sporulation of them all. Orange sweet and laurel oils were ineffective against fungi. Clove, garlic, and oregano oils showed the highest antibacterial activity at 25% against Enterobacter agglomerans and Streptomyces sp., while only clove and oregano oils were effective against Bacillus sp. at all concentrations studied. This study has an important implication for the possible use of the natural products from plants in the control of biodeterioration of documentary heritage.

  12. Safety and Immunogenicity of a Live-Attenuated Junin (Argentine Hemorrhagic Fever) Vaccine in Rhesus Macaques

    Science.gov (United States)

    1993-01-01

    immunization of the MATERIALS AND METHODS at-risk population offers the only practical so- Iltron for control of the disease. Attempts to develop a...saphenous or femoral veins using a 23- or 21 -gauge butterfly Materials for direct quantitative viral titration needle. Venipuncture sites were cleansed...21702-5011. 14. Contigiani MS. Sabattini MS. 1977. Virulencia diferencial de cepas de virus Junin per marca- dores biologicos en ratones % coba’.os

  13. Globalisation, indigenous tourism, and the politics of place in Amaicha (NW Argentine Andes

    Directory of Open Access Journals (Sweden)

    Rainer, Gerhard

    2015-03-01

    Full Text Available Argentina is a country that has represented itself over centuries as white and European. Over the last decades, however, indigenous movements have increased strongly in visibility and importance. This investigation considers this background in analysing the complex relationship between the growing importance of tourism and indigenous politics for self-determination and autonomy in the Andean village of Amaicha (NW-Argentina. The annual Pachamama celebration held by the indigenous Amaicha community presents the ideal setting for this research as it has simultaneously become a ‘national tourist festivity’ in the context of recent government efforts to promote a culturally diverse Argentina for tourism development. Through long-term ethnographic field work and by applying a methodological framework that combines the interpretation of visual material with careful empirical research this study presents a differentiated analysis of the political implications of indigenous tourism. The findings show that conflicts between the indigenous community and governmental institutions tend not to be about tourism and place promotion as such, but rather tourism has become a central arena where struggles over political control are manifested and mediated. Furthermore, cultural politics in Amaicha have recently been reassembled through both embodied practices and the use of cultural symbols during the Pachamama festivity. Finally, while relational conceptualisations of place as constituted through wider connections have gained momentum in academia, the results from this investigation show that an essentialised understanding of culture and identity as rooted in place is promoted for tourism, and emphasised by the indigenous community in order to legitimise claims for territorial and political rights. The goal of the paper is thus to contribute to a nuanced picture of emergent indigenous geographies in Argentina.

  14. Modernization of the Defense Sector. Principles and Characteristics of the Argentine Model

    Science.gov (United States)

    2007-01-01

    Supply of Common Items (Pro- grama de Abastecimiento Conjunto de Insumos Comunes , PACIC) was created and implemented. Such program is intended to...interdisci- plinary learning . The Ministry of Defense, following the deep sense of public service contained in the military func- tion, consolidated

  15. Survival of crimes of suspicion: the case of article 259 of the Argentine Penal Code

    OpenAIRE

    2011-01-01

    Los “delitos de sospecha”, se encuentran plenamente vigentes pese a ser tipos manifiestamente inconstitucionales por violar los principios de inocencia, culpabilidad, lesividad, legalidad y de acto. Para demostrar tal afirmación, luego de caracterizar a esta categoría, se verifican sus elementos analizando los delitos de admisión y ofrecimiento de dádivas a funcionarios públicos del artículo 259 del Código penal argentino. The “crimes of suspicion”, are effective totally in spite...

  16. Cucurto's Cardboard Coloring Book: Argentine Independence and other Stories to Recycle

    Directory of Open Access Journals (Sweden)

    Doris Sommer

    2010-06-01

    Full Text Available El presente artículo busca probar el carácter de materiales reciclables de los actuales discursos histórico y literario, como se puede constatar en el marco de las celebraciones oficiales con motivo del bicentenario de la independencia argentina. Para ello se analiza el trabajo adelantado por Washington Cucurto, seudónimo del escritor argentino Santiago Vega (1973, en su editorial Eloísa Cartonera (edición de textos a partir de materiales reciclables adquiridos a los cartoneros bonaerenses, su aguda mirada de los procesos migratorios desde diferentes lugares de Latinoamérica hacia Argentina y su peculiar manera de concebir la re-escritura de la literatura.This article tries to prove how present historical and literary discourses are recyclable materials, as the framework of Argentina’s Bicentennial Independence official celebrations shows. The work done by Washington Cucurto in his Eloisa Cartonera’s press (editing texts from recyclable materials, acquired from the Buenos Aires’ cardboards, his sharp view on the migratory processes from different places of Latin America toward Argentina and his particular way of thinking the re-writing of literature contribute to prove the recyclable character of these discourses.

  17. Expert opinions of demographic rates of Argentine black and white tegus in South Florida

    Science.gov (United States)

    Johnson, Fred A.

    2017-01-01

    We illustrate the utility of expert elicitation, explicit recognition of uncertainty, and the value of information for directing management and research efforts for invasive species, using tegu lizards (Salvator merianae) in southern Florida as a case study.  We posited a post-birth pulse, matrix model, which was parameterized using a 3-point process to elicit estimates of tegu demographic rates from herpetology experts.  We fit statistical distributions for each parameter and for each expert, then drew and pooled a large number of replicate samples from these to form a distribution for each demographic parameter.  Using these distributions, we generated a large sample of matrix models to infer how the tegu population might respond to control efforts.  We used the concepts of Pareto efficiency and stochastic dominance to conclude that targeting older age classes at relatively high rates appears to have the best chance of minimizing tegu abundance and control costs.  Expert opinion combined with an explicit consideration of uncertainty can be valuable for conducting an initial assessment of the effort needed to control the invader.  The value of information can be used to focus research in a way that not only helps increases the efficacy of control, but minimizes costs as well.

  18. WORKING CAPITAL MANAGEMENT: AN APLICATION OF THE FLEURIET MODEL ON ARGENTINE, BRAZILIAN, CHILEAN AND MEXICAN COMPANIES

    OpenAIRE

    2008-01-01

    Nos ní­veis atuais de globalização, fluxo de informações e sensibilidade das economias e empresas em todo o mundo, e onde os mercados financeiros,os processos, operações e dinâmicas organizacionais são cada vez mais padronizados, torna-se cada vez mais importante a precisão dos indicadores e dados que são utilizados na avaliação de empresas para a percepção quanto as suas situações financeiras por meio da observação de indicadores de capital de giro, em especial, em no...

  19. Cytotoxic effect of Argentine medicinal plant extracts on human hepatocellular carcinoma cell line.

    Science.gov (United States)

    Ruffa, M J; Ferraro, G; Wagner, M L; Calcagno, M L; Campos, R H; Cavallaro, L

    2002-03-01

    Methanolic extracts from Achyrocline satureioides (Dc.) Lam, Aristolochia macroura Gomez, Lithraea molleoides (Vell.) Engl., Schinus molle L., unlike those from Celtis spinosa Spreng, Chenopodium ambrosioides L., Petiveria alliacea L., and Plantago major L. showed cytotoxic activity against a human hepatocellular carcinoma cell line, Hep G2. Schinus molle L. was the most active (IC50=50+/-7 microg/ml). These results call for further studies of these extracts.

  20. Brazilian-Argentine Relations in the 1980s: from Wary Rivalry toward Friendly Competition

    Science.gov (United States)

    1985-03-01

    Kingdom 7 Venezuela 27 Arab Countries 6 Frarce 26 Venezuela 6 Mexico 22 Cuba 3 Cuba 19 Mexico 2 Source: Foreign Opinion Note of June 26, 1981, Office...terms from creditors, based on concessions won earlier by the other side. ( Mexico is the third important player in this game.) Formation of a more radical...future are analyzed in Helio Jaguaribe, "Brasil-Argentina: Breve analisis de las relaciones de conflicto y cooperacion," Estudios internacionales

  1. A Framework for Improving Integrative Factors in C3I Systems of the Argentine Army

    Science.gov (United States)

    1991-03-01

    provided to assist the reader in his familiarity and understanding of the issues. D. ORGANIZATION OF THE STUDY This thesis consists of eight chapters...generators). " Increased user sophistication and renewed interest in quantitative methods by improving heuristic. " DSS’s provide a familiar ...Library, Code 52 2 Naval Postgraduate School Monterey, CA 93943-5002 3. Estado Mayor General del Ej~rcito Argentino 3 Direcci6n de Comunicaciones

  2. Institutions, credibility and crisis: the inconsistencies of Argentine exchange rate policy (1991-2006

    Directory of Open Access Journals (Sweden)

    NICOLÁS CHERNY

    2015-03-01

    Full Text Available The purpose of this article is twofold. The first is to explain the time inconsistencies of the convertibility regime that led to the 2001 crisis. The argument suggests that the credibility requirements for convertibility induced a dynamic of legal, fiscal, financial and external commitments that increased exit costs and time inconsistencies. The second objective is to explain the tensions of the floating regime that replaced convertibility in 2002. We describe the effects of a floating exchange rate on macroeconomic imbalance and the growing tension between competitiveness and inflation.

  3. State Terror, Economic Policy, and Social Rupture during the Argentine ’Proceso,’ 1976-1981

    Science.gov (United States)

    1987-08-01

    enacted. This included the works of Althusser , Freud, Marx, Lacan, Foucault, Neruda, Cortazar, Garcia Marquez, and Upton Sinclair, vmong others. The...apparatuses" (or what Gramsci called hegemonic apparatuses) in the achievement of hegemony see Louis Althusser , Lenin and Philosophy and Other Essays

  4. Professor Bernardo Alberto Houssay, MD (1887-1971): Argentine physiologist and Nobel laureate.

    Science.gov (United States)

    Hawgood, Barbara J

    2004-05-01

    Professor Bernardo A Houssay, Director of the Institute of Physiology at the University of Buenos Aires, was an outstanding physiologist who created the first school of medical research in Argentina and brought it to world attention. His research covered a wide range of physiological fields, but particularly concerned the hormonal control of metabolism and arterial hypertension. Houssay was dismissed from the university during the Perón era but was able to found and direct the Institute of Biology and Experimental Medicine in Buenos Aires. He was joint winner of the Nobel Prize for Physiology or Medicine in 1947 for his discovery of the role of the anterior pituitary in carbohydrate metabolism.

  5. Changing cocaine use practices: neo-liberalism, HIV-AIDS, and death in an Argentine shantytown.

    Science.gov (United States)

    Epele, María E

    2003-07-01

    Cocaine consuming patterns are changing among young drug users who live in "The Villa," a shantytown located in Greater Buenos Aires. After years of drug injection dominance, cocaine snorting became the preferred drug consuming practice while deep and fast structural and cultural transformations have been taken place as part of the neoliberal program implemented in Argentina during the 1990s and the final economic default in 2001-2002. In this article, I analyze how drug users understand and explain these changing practices, including the following aspects: deteriorating economic conditions, the transformations of survival strategies, moral codes, social network organization, violence regulating mechanisms, criminal activity, and police repression. Based on an ethnographic study carried out during the last eight months in "The Villa," I suggest that intense and generalized cocaine injection in shantytowns has logistic, organizational, and structural requirements that cocaine snorting does not have. Particularly, I explore two main aspects associated with these changing cocaine consumption practices: the consequences of the many Acquired Immunodeficiency Syndrome (AIDS)-related deaths, which occurred among older drug injectors, and the progressive social fragmentation tied to the extreme economic deprivation, deepened social exclusion, and growing everyday violence.

  6. Argentine guidelines for the diagnosis, prevention and treatment of osteoporosis, 2015

    Directory of Open Access Journals (Sweden)

    León Schurman

    2017-02-01

    Full Text Available Osteoporosis is an evolving disease which affects over 200 million people worldwide. Our recommendations are guidelines for its diagnosis, prevention and treatment, but they do not constitute standards for clinical decisions in individual cases. The physician must adapt them to individual special situations, incorporating personal factors that transcend the limits of these guidelines and are dependent on the knowledge and art of the practice of Medicine. These guidelines should be reviewed and updated periodically as new, better and more effective diagnostic and therapeutic tools become available

  7. Policy development in a non-OECD context - energy efficiency policy for Argentine buildings

    Energy Technology Data Exchange (ETDEWEB)

    Smedby, Nora (International Institute for Industrial Environmental Economics, Lund University (Sweden))

    2011-07-01

    Energy efficiency has gained attention as an important means of ensuring energy supply, fostering countries' competitiveness and cost-effectively mitigating CO{sub 2} emissions. Yet, evaluations of energy efficiency policies are often lacking or insufficient. Moreover, researchers have tended to overlook these types of policies in non-OECD countries, although at this very moment many of these countries are about to introduce them. This study has sought to assess energy efficiency policy design, implementation and results in non-OECD countries-using Argentina as an example. The focus is on PRONUREE, an energy efficiency policy programme introduced in Argentina in 2007, and more specifically on this policy programme's sections concerning the existing stock of residential buildings. The study relies on a qualitative research approach and interviews with key players within policy-making, business and academia. Based on this, the programme's output has been assessed. The broader analysis has been complemented by a more detailed assessment of the transparency and administrative burden in the design process. This study's results indicate that the output of PRONUREE has been rather limited. The only specific outcome regarding building construction and installed systems is the initiation of the development of a voluntary classification scheme for building envelopes. Moreover, transparency was lacking throughout the process, and a heavy burden of negotiation put on policy makers was revealed. The study concludes that the limited output is partly attributable to a lack of transparency and policy makers' limited resources. Drawing on so-called policy network theory, it is argued that the lack of interaction between private, public and academic players has hampered the programme's progression. Furthermore, the study highlights the importance of considering (the management of) expectations of actual policy implementation in the study of policy development

  8. Saprolegnia oliviae sp. nov. isolated from an Argentine river (Tierra del Fuego Province, Argentina).

    Science.gov (United States)

    Steciow, Mónica Mirta

    2003-02-28

    Saprolegnia oliviae sp. nov. is described from litter (floating dead twigs, leaves and roots) in the Olivia River, Ushuaia Department, Tierra del Fuego Province (Argentina). The new species is illustrated and compared with other species of the genus. Distinguishing characteristics of S. oliviae are the production of smooth oogonia (with some lateral or terminal projections) and the absence of antheridial branches on the majority of the oogonia, but when present, they are mostly diclinous, at times oogonia are supplied with androgynous and monoclinous antheridial branches. The oogonial stalks are predominantly short and straight or long and bent, curved or many times coiled; oospores are distinctive subcentric, (1-) 15-50 (-70) per oogonium. Morphological details of the new species and its comparison with other described species are discussed here.

  9. The senses of Violence. "Cristianismo y Revolución" in Argentine in the sixties

    Directory of Open Access Journals (Sweden)

    Daniela Slipak

    2013-12-01

    Full Text Available Based on the importance of symbolic inscriptions in understanding the political dynamics and the formation of groups, this article explores the meanings of violence displayed in Cristianismo y Revolución, Argentinean magazine published between September 1966 and September 1971. This publication was a paradigmatic exponent of the different contestant expressions to the military governments that took place in the country from 1966-1973 and in which catholics networks, unions, intellectuals, university, and, increasingly, armed organizations converged. Which was the meaning of violence that prevailed in the magazine? What were the characteristics that this meaning gave to political action? Could that mean be splitted from its aims? And, as derived from the aforementioned questions, could it be asserted that violence had a unique sense?

  10. RED MEAT, MICRONUTRIENTS AND ORAL SQUAMOUS CELL CARCINOMA OF ARGENTINE ADULT PATIENTS.

    Science.gov (United States)

    Secchi, Dante Gustavo; Aballay, Laura Rosana; Galíndez, María Fernanda; Piccini, Daniel; Lanfranchi, Héctor; Brunotto, Mabel

    2015-09-01

    Introducción: la detección de grupos de riesgo de cáncer oral permite reducir las tasas de morbilidad y mortalidad típicas de esta patología. Objetivo: se analizó el rol de carnes rojas, macronutrientes y micronutrientes en pacientes con carcinoma oral de células escamosas (COCE) en un estudio de casos y controles llevado a cabo en Córdoba, Argentina. Métodos: estudio de casos y controles 3:1, ambos sexos, con edades comprendidas entre 24-80 años. La información sobre la dieta fue recogida mediante un cuestionario de frecuencia de alimentos cuali-cuantitativo. La regresión logística se aplicó para evaluar la asociación entre el estado caso/control y la ingesta diaria de carne roja/ macronutrientes/micronutrientes/energía. Resultados: los micronutrientes y minerales de la dieta que mostraron valores medios significativos de consumo común en los casos relativos a los controles eran hierro, fósforo, vitaminas B1, B5, B6, E y K y selenio. La medición de la asociación estimada por regresión logística mostró una asociación significativa entre carne roja, grasas, energía diaria, fósforo, vitamina B5, vitamina E, ingesta de selenio y presencia de COCE. Conclusión: un alto consumo de grasas, fósforo, vitamina B5, vitamina E, selenio y carne roja parece estar relacionado con la presencia de COCE en Córdoba, Argentina. En relación con el consumo de carne roja y el riesgo de COCE, la investigación futura debería centrar su atención en la reducción de la complejidad de las relaciones de la dieta y la enfermedad, así como en reducir la variabilidad de los datos de ingesta mediante la estandarización de los criterios de admisión a fin de aplicar estrategias sencillas en salud pública para el reconocimiento de grupos de riesgo de COCE.

  11. NETWORKS VERSUS ICT USE: THE CASE OF SME FROM BAHÍA BLANCA, BUENOS AIRES, ARGENTINE

    Directory of Open Access Journals (Sweden)

    Maria Verónica Alderete Conicet

    2011-08-01

    Full Text Available Cooperative networks are main tools to improve the competitiveness of Small and Medium Size Enterprises (SME. This study contributes to extend the literature review about the factors that foster firms’ cooperative conduct. Apart from that, the paper examines through a LOGIT model, the firm’s characteristics, especially ICT (information and communication technologies use, and the environment’s and partners’ characteristics that influence the probability of building alliances with other firms from the same economic activity. In particular, we find that ICT use reduces the probability of networking.

  12. Dynamics and genetic structure of Argentine ant supercolonies in their native range

    DEFF Research Database (Denmark)

    Vogel, Valérie; Pedersen, Jes S; d'Ettorre, Patrizia

    2009-01-01

    analyses revealed the presence of 11 supercolonies (width 1 to 515 m) over a 3-km transect. As in the introduced range, there was always strong aggression between but never within supercolonies. The genetic data were in perfect agreement with the behavioral tests, all nests being assigned to identical......-third of the supercolonies being replaced yearly. This dynamic is likely to involve strong competition between supercolonies and thus act as a potent selective force maintaining unicoloniality over evolutionary time....

  13. Beekeeping in Argentine%阿根廷养蜂业见闻

    Institute of Scientific and Technical Information of China (English)

    刁青云; 姜秋玲; 吴杰

    2009-01-01

    尽管由于技术的进步,在我们这个信息时代,人们获取信息的手段也日新月异。但是深入实际调查考察,仍然是不可或缺、无法替代的重要途径。这篇新近考察阿根延养蜂业的见闻,行文流畅,内容翔实,信息量大。他山之石,可以攻玉,相信读者会从这篇见闻中获得启迪和教益。

  14. [Effect of high altitude on birth weight and adverse perinatal outcomes in two Argentine populations].

    Science.gov (United States)

    Grandi, Carlos; Dipierri, José; Luchtenberg, Guillermo; Moresco, Angélica; Alfaro, Emma

    2013-01-01

    Introducción: existe poca información sobre la relación entre tamaño al nacer y altura geográfica ajustada para factores maternos y obstétricos potencialmente confusores. Objetivo: analizar la variación, en función de la altitud geográfica, del Peso al Nacimiento (PN) y resultados perinatales adversos, en dos poblaciones argentinas. Material y Métodos: 4000 registros de recién nacidos (RN) de Jujuy y 4000 de Buenos Aires (Maternidad Sardá) (1996-2000), seleccionados y aleatorizados del Sistema Informático Perinatal. Los datos provenían de la Maternidad Sarda (20 msnm) y las regiones jujeñas: Ramal (500 msnm), Valle (1200 msnm), Quebrada (2500 msnm) y Puna (3500 msnm). Variables resultado: PN >3000 g, PN creciente para madres adolescentes y decreciente para las variables obstétrico-maternas. El PN, PN >3000 g, PN <2500 g e Índice Ponderal se asociaron negativamente con altitud (p<0.001). La prevalencia de prematurez, PEG y FGR mostraron un comportamiento opuesto (p<0.001). Ajustados para variables confusoras el PN<3000 g, PEG, FGR < 0.90 e IP<2.53 mostraron mayor riesgo con la altitud geográfica (p<0.05). Conclusiones: La altitud se asoció independientemente con restricción del PN y resultados perinatales adversos. Dado el impacto de la reducción del PN en el riesgo de enfermedades crónicas no transmisibles, se debería evaluar esta relación en otras poblaciones, independientemente de su localización altitudinal.

  15. Correlation between hygienic-dietary habits and casdiovascular risk factors in young adults argentine

    Directory of Open Access Journals (Sweden)

    Melina Erben

    2014-12-01

    Full Text Available Introduction: According to the World Health Organization, the cardiovascular disease (ECV is one of the most important public health problem in the world. The aim of this study was to evaluate the prevalence of ECV factors in a young adult population, and establish the interrelation of these variables through multivariate statistical analysis.Material and Methods: In a sample of 53 individuals of both sexes (18-30 years old, were carried out hygienic-dietary habits surveys, two reminders of 24 hours, anthropometric measurements (weight, height and a blood lipid profile: total cholesterol (Col, HDL, LDL and triglycerides (TG and Castelli Index (CI was calculated.Results: The mean values of Col, HDL, LDL, TG and IC were 183±32, 49.5±18, 107.5±29, 114±101, 4.21±1.85, respectively. 66% of individuals exhibited a disturbance in one or more blood lipids analyzed, 41% were overweight, 60% did not physical activity, 45% had a caloric intake above recommendations, 80% consumed more fat than recommended, 9.4% drank alcohol and 13.2% smoked. Through multivariate analysis was found a correlation between altered lipids profile, physical inactivity, Kcal. and fat excess intake. Moreover, association between normal lipids profile, physical activity and Kcal. and fat intake insufficient and adequate was found.Conclusions: There is a high prevalence of factors associated with ECV in the study population, and were found a correlation of the following risk factors: altered lipid profile, physical inactivity, Kcal. intake and excess fat.

  16. Argentine agriculture machinery industry in the face of the sectorial structure of the internacional market

    OpenAIRE

    Langard, Federico

    2011-01-01

    En el marco de una continua reestructuración de las empresas trasnacionales productoras de maquinaria agrícola a nivel mundial, se observa una, significativa tendencia a la concentración de las mismas y a la oligopolización de la oferta mundial, situación que sin lugar a dudas impacta en nuestro país. El trabajo analiza la dinámica del comercio mundial de maquinaria agrícola, vinculada al desempeño del sector en Argentina. Para ello, se examina el comportamiento de las firmas nacionales y ext...

  17. Plants employed in traditional veterinary medicine by the criollos of the northwestern Argentine Chaco

    Directory of Open Access Journals (Sweden)

    Gustavo F. Scarpa

    2000-01-01

    Full Text Available Scarpa, G. F. 2000. Plantas empleadas en la veterinaria tradicional de los criollos del ChacoNoroccidental argentino. Darwiniana 38(3-4: 253-265.Se registraron un total de 81 usos de tipo veterinario para 61 especies nativas y exóticas, correspon-dientes a 54 géneros y 37 familias botánicas, entre los campesinos del Chaco Semiárido argentino. Losnombres científicos y vernáculos, las partes usadas, las formas de preparación y administración y elmaterial examinado son incluidos en una lista para cada uno de los taxones consignados. La mitad de losremedios vegetales referidos se emplean como vulnerarios, oxitócicos, purgantes, antidiarreicos yexpectorantes. Vacunos, caballos y perros reciben la mayor atención. El uso de las plantas en suveterinaria tradicional evidencia una combinación de diferentes técnicas terapéuticas: antigua medicinahipocrática, procedimientos mágicos y prácticas religiosas cristianas

  18. BASELINE PLASMA CHOLINESTERASE ACTIVITIES IN ARGENTINE SADDLE HORSES FROM SABANA DE BOGOTÁ

    Directory of Open Access Journals (Sweden)

    C. Ariza

    2012-01-01

    Full Text Available La determinación de la actividad colinesterasa (ChE en animales domésticos es de importancia en diagnóstico e investigación. El presente trabajo tuvo como objetivo principal la determinación de la línea base de actividad ChE plasmática (acetilcolines-terasa, AChE y butirilcolinesterasa, BChE en 60 caballos Silla Argentino muestreados en fincas de equinos ubicadas en Bogotá (Colombia y sus alrededores. Las actividades catalíticas de AChE y BChE plasmáticas fueron medidas mediante espectrofotome-tría visible (405 nm. Los valores promedio ± desviación estándar de actividad AChE (nmols/ml/ min para machos (n=32 fueron 1566 ± 301. En intervalos de edad, los resultados fueron, 0.5–5 años: 1526 ± 295, 6–10 años: 1532 ± 313, 11-15 años: 1615 ± 279, y > 15 años: 1617 ± 335. En hembras (n=28, la actividad AChE fue 1323 ± 432, con valores en intervalos de edad, 0.5-5 años: 719 ± 108, 6–10 años: 1603 ± 313, 11–15 años: 1225 ± 294, > 15 años: 1519 ± 369. La BChE en machos fue 3304 ± 822; con intervalos de edad, 0.5-5 años: 3383 ± 715, 6–10 años: 3360 ± 766, 11-15 años: 3267 ± 1064, > 15 años: 3206 ± 861. En hembras, la BChE fue 3097 ± 432, con intervalos de edad: 0.5-5 años: 2467 ± 981, 6–10 años: 3668 ± 750, 11-15 años: 3238 ± 979, y > 15 años: 3015 ± 925. La actividad AChE fue significativamente diferente entre machos y hembras (test t, p < 0.05 y en ambos géneros al comparar los grupos etáreos (ANAVA, p < 0.05. BChE tuvo valores más altos que AChE, sin embargo, no en forma significativa cuando se compararon los resultados entre los dos géneros, ni cuando se compararon los grupos etáreos en los dos géneros. En una prueba adicional, 15 muestras fueron tomadas al azar y mantenidas a 4oC durante 72 horas para ser anali-zadas cada 24 horas; AChE y BChE no mostraron variaciones significativas entre las mediciones hechas en este período de tiempo. El presente estudio permitió determinar lineas base de los dos tipos de colinesterasas plasmáticas en caballos tipo silla Argentino con el propósito de ofrecer valores de referencia con fines diagnósticos y comparativos para clínicos e investigadores.

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

    Science.gov (United States)

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

  20. The Domuyo volcanic system: An enormous geothermal resource in Argentine Patagonia

    Science.gov (United States)

    Chiodini, Giovanni; Liccioli, Caterina; Vaselli, Orlando; Calabrese, Sergio; Tassi, Franco; Caliro, Stefano; Caselli, Alberto; Agusto, Mariano; D'Alessandro, Walter

    2014-03-01

    A geochemical survey of the main thermal waters discharging in the southwestern part of the Domuyo volcanic complex (Argentina), where the latest volcanic activity dates to 0.11 Ma, has highlighted the extraordinarily high heat loss from this remote site in Patagonia. The thermal water discharges are mostly Na-Cl in composition and have TDS values up to 3.78 g L- 1 (El Humazo). A simple hydrogeochemical approach shows that 1,100 to 1,300 kg s- 1 of boiling waters, which have been affected by shallow steam separation, flow into the main drainage of the area (Rio Varvarco). A dramatic increase of the most conservative species such as Na, Cl and Li from the Rio Varvarco from upstream to downstream was observed and related solely to the contribution of hydrothermal fluids. The equilibrium temperatures of the discharging thermal fluids, calculated on the basis of the Na-K-Mg geothermometer, are between 190 °C and 230 °C. If we refer to a liquid originally at 220 °C (enthalpy = 944 J g- 1), the thermal energy release can be estimated as high as 1.1 ± 0.2 GW, a value that is much higher than the natural release of heat in other important geothermal fields worldwide, e.g., Mutnovsky (Russia), Wairakei (New Zealand) and Lassen Peak (USA). This value is the second highest measured advective heat flux from any hydrothermal system on Earth after Yellowstone.

  1. Consenso Argentino de Rehabilitación Respiratoria Argentine Consensus of Respiratory Rehabilitation

    Directory of Open Access Journals (Sweden)

    Martín Sivori

    2004-08-01

    Full Text Available Un grupo de neumonólogos y kinesiólogos asociados a la Asociación Argentina de Medicina Respiratoria se reunieron con el objetivo de revisar la evidencia científica en Rehabilitación Respiratoria (RR, elaborar recomendaciones basadas en la evidencia para su aplicación local y promover su uso. RR es un programa multidisciplinario para el cuidado de pacientes con una alteración respiratoria crónica, ajustado individualmente, con el objetivo de lograr el máximo de actividad física, social y la independencia funcional del paciente a través de la actividad física supervisada. La RR está particularmente indicada en pacientes con Enfermedad Pulmonar Obstructiva Crónica (EPOC que presenten intolerancia al esfuerzo. Se han definido los criterios de inclusión y exclusión, las mínimas pautas de evaluación y cómo realizar el control posterior a la RR. Se elaboraron normativas sobre los recursos para montar un programa. Se recomendó un programa ambulatorio hospitalario con complemento domiciliario, y al personal mínimo necesario (un neumonólogo y un kinesiólogo. Se recomendó para todos los pacientes el entrenamiento aeróbico de resistencia para miembros inferiores (MI (Evidencia A y de miembros superiores (MS (Evidencia B, de fuerza de MI y MS (Evidencia C, como así también para determinados pacientes el entrenamiento muscular respiratorio a carga resistiva umbral inspiratoria (Evidencia D, y otras técnicas kinésicas. Se hicieron recomendaciones sobre los objetivos educativos, apoyo nutricional y psicológico en todo programa de RR. El beneficio de la RR también fue analizado a través de la reducción de las exacerbaciones, hospitalizaciones y costos para el sistema de salud de los programas de RR. La RR es un componente fundamental del tratamiento de un paciente con EPOC. Este Consenso ha elaborado recomendaciones basadas en la evidencia científica para ser aplicada a nivel local.A group of pulmonologists and physical therapists from the Asociacion Argentina de Medicina Respiratoria revised the scientific literature on Respiratory Rehabilitation (RR to elaborate evidence-based national recommendations to promote its use. RR is a multidisciplinary program of care for patients with chronic respiratory impairment, individually tailored, designed to optimize physical and social performance and autonomy of patients. It is particularly indicated in patients with Chronic Obstructive Pulmonary Disease (COPD with exercise intolerance. Inclusion and exclusion criteria, guidelines for initial evaluation and follow up have been defined. The resources needed were defined. It was recommended a hospital ambulatory program with domiciliary complement. A pulmonologist and physical therapist were required for the program as minimum. Aerobic training was recommended for lower limb (LL (Evidence A and upper limb (UL (Evidence B, strength training for LL and UL (Evidence C, as well as respiratory muscles training by resistive inspiratory threshold load (Evidence D and other physiotherapy techniques were recommended for specific patients. In addition recommendations have been made for educational objectives of the program, nutritional and psychological support. The positive impact of RR on health care was analyzed through the reduction in exacerbation of COPD, length of hospital stay and cost. RR is a key component in the treatment of COPD patients. This evidenced-based consensus statement was prepared to provide recommendations to be implemented nationally.

  2. A Basis for a Command, Control and Communications (C3) System Architecture for the Argentine Army

    Science.gov (United States)

    1990-03-01

    needed on the bat- tlefield, Most commanders derive important situational clues by listening to how their subordinates sound in their verbal reports. F...0142 2 Naval Postgraduate School Monterey, CA 93943-5002 3. Estado Mayor General del Ejercito Argentino 5 Direccion de Comunicaciones Azopardo 250

  3. Sources and distribution of aliphatic and polyaromatic hydrocarbons in sediments from the Neuquen River, Argentine Patagonia.

    Science.gov (United States)

    Monza, Liliana B; Loewy, Ruth M; Savini, Mónica C; Pechen de d'Angelo, Ana M

    2013-01-01

    Spatial distribution and probable sources of aliphatic and polyaromatic hydrocarbons (AHs, PAHs) were investigated in surface sediments collected along the bank of the Neuquen River, Argentina. Total concentrations of aliphatic hydrocarbons ranged between 0.41 and 125 μg/g dw. Six stations presented low values of resolved aliphatic hydrocarbons and the n-alkane distribution indexes applied suggested a clear biogenic source. These values can be considered the baseline levels of aliphatic hydrocarbons for the river sediments. This constitutes important information for the assessment of future impacts since a strong impulse in the exploitation of shale gas and shale oil in these zones is nowadays undergoing. For the other 11 stations, a mixture of aliphatic hydrocarbons of petrogenic and biogenic origin was observed. The spatial distribution reflects local inputs of these pollutants with a significant increase in concentrations in the lower course, where two major cities are located. The highest values of total aliphatic hydrocarbons were found in this sector which, in turn, was the only one where individual PAHs were detected.

  4. Salvadora persica agro-ecological suitability for oil production in Argentine dryland salinity.

    Science.gov (United States)

    Falasca, Silvia; Pitta-Alvarez, Sandra; del Fresno, Carolina Miranda

    2015-12-15

    One of the major causes of crop stress is soil or water salinity. Thus, selection of the best species for cultivation in semiarid and arid climates is fundamental. Salvadora persica is an evergreen perennial halophyte that can grow under extreme conditions, from very dry environments to highly saline soils. Based on international bibliography, the authors outlined an agro-ecological zoning model to determine the potential cultivation zones for S. persica in Argentina. This model may be applied to any part of the world, using the agro-ecological limits presented in this work. All the maps were developed by the implementation of a geographic information system (GIS) that can be updated by the further incorporation of complementary information, with the consequent improvement of the original database. The overlap of the agroclimatic suitability map on the drylands' saline soils and the drylands' alkaline soils maps, determined the agro-ecological zoning. Since some areas in the agro-ecological zoning can overlap with land that is already assigned for other uses, protected areas, current land use/cover of the different zones, and urban areas maps were incorporated into the GIS and subtracted by a mask. This resulted in the delimitation of "potential cultivation zoning", thus avoiding possible conflicts surrounding the use of land and making the agro-ecological zonation more efficient. There is a broad agro-ecological zone for cultivation of S. persica that extends from Northern Argentina to approximately 41° South latitude, under dry-subhumid to semiarid climates. Lands classified with different degrees of suitability in the potential cultivation zoning could be used for production of this species for energy purposes on lands that are either unsuitable for food production or currently assigned for other purposes. This paper represents pioneering work since there are no previous studies concerning the introduction of S. persica in Argentina.

  5. Meditation and Dance in Creative Society: Contemplative Consciousness in Daoism, Zen and Argentine Tango

    Directory of Open Access Journals (Sweden)

    Agnieška Juzefovič

    2015-07-01

    Full Text Available This paper deals with the particularly relevant topic in the contemporary society – Asian meditative practices and methods of self-development. The first chapter deals with the notion of contemplative, enlightened consciousness in Daoism and Zen. The second chapter shows how meditative consciousness could be achieved through social tango. Six theses are argued as appropriate for both Daoism and Zen as well as tango: 1 contemplative, purified consciousness is empty of disturbing thoughts and focused toward the essence; 2 contemplative, purified consciousness is not only empty but also brimming full; 3 contemplative, purified consciousness is identical with everyday mind; 4 contemplative mind is functioning according to the principles of non-action and naturalness; 5 meditation leads toward the unity and integrity of consciousness and body, consciousness and outside world; 6 active meditation is an effective way to obtain aims mentioned above. The argumentation of such thesis helps to show that tango is akin to various meditative practices. So it could not only be successfully used as a form of entertainment but also as a meditative practice, leading toward aims, similar to those of Zen meditations.

  6. An Optimization of the Maintenance Assets Distribution Network in the Argentine Air Force

    Science.gov (United States)

    2015-03-26

    contractor who performs the required maintenance. Additionally, each weapon 7 system has assigned depot warehouses for parts. Both the depot shops...stock, the local warehouse places an order to the assigned Logistic Unit through the SIL, which is the information technology system established in... management and decentralized execution, continuous improvement and maximum system efficiency to achieve the goal with the least investment of resources (AAF

  7. The Key Role of Cultural Preservation in Maize Diversity Conservation in the Argentine Yungas

    Science.gov (United States)

    Hilgert, Norma I.; Zamudio, Fernando; Cariola, Lucía

    2013-01-01

    Farmers' decisions on what to grow and why can contribute in understanding the conservation of agrobiodiversity. Culture and ethnicity are indicated as first-class factors leading preservation of heirloom cultivars but this has been little considered in studies examining factors that influence the loss or preservation of agrobiodiversity. We propose that corn's ethnotaxa of less diverse uses, which are also key partners in local cultural reproduction, are usually cultivated by a few households. We analyse if there is a relationship between uses and richness of cultivated ethnotaxa at household level and describe corn's medicinal and ritual uses. We found 25 cultivated ethnotaxa, heterogeneously distributed in the region, and we also found that ethnotaxa with less diverse uses are cultivated in fewer households. We identified that, at regional scale, richness is related with food use diversity. The most frequently cited medicinal uses were urinary and tract infections, diarrhoea, and liver disorders. Medicinal recipes involve combinations with other elements. Maize is an indispensable resource in the rituals that propitiate productive activity, to augur prosperity or misfortune according to signals. We have identified the vulnerability in preserving the richness of corn in the region and the factors that shape its cultivation at different scales. PMID:24078829

  8. A comparative study of oral lichen planus and leukoplakia in two Argentine populations.

    Science.gov (United States)

    Femopase, F L; Binagui, M V; López de Blanc, S; Gandolfo, M; Lanfranchi, H E

    1997-01-01

    Oral Lichen Planus and Leukoplakia are two precancerous lesions of great relevance in oral pathology. A total of 4183 patients from the National University of Córdoba (UNC) and 4838 patients from the University of Buenos Aires (UBA) who had been admitted to the corresponding Oral Pathology Departments were analyzed. Of the total number of patients, 476 corresponded to Lichen Planus cases and 418 to Leukoplakia cases. Of the 476 Lichen Planus cases, 330 came from UBA and 146 from UNC, whereas of the 418 cases of Leukoplakia, 284 came from UNC and 134 from UBA. These differences were statistically significant (p Oral Pathology Departments. The association between diabetes and Lichen Planus was similar for both centers, 11.5% for UNC and 14% for UBA. Similarly, no differences were found in terms of the association with tobacco consumption and dental microtrauma. Twenty-two percent of UNC patients were smokers whereas only 11% of UBA patients were smokers. This finding could explain the larger amount of Leukoplakia in UNC. The differences in the incidence of Lichen Planus could be attributed to the fact that the Buenos Aires population is under greater stress and the higher incidence of Leukoplakia in UNC could be related to the smoking habits of this population.

  9. La presse de la communauté espagnole dans l’Argentine péroniste

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    Laurent Bonardi

    2009-12-01

    Full Text Available Este artículo propone un análisis de las posiciones asumidas por los periódicos de la comunidad española de Argentina durante un periodo caracterizado por las estrechas relaciones hispano-argentinas que obstaculizan considerablemente las manifestaciones de oposición al régimen franquista en Argentina. El caso del periódico España Republicana, por su importancia, es objeto de un análisis particular.______________________ABSTRACT:This article proposes an analysis of the positions assumed by Spanish and Argentinian newspapers during a period characterized by the close relations between Spain and Argentina that have considerably prevented the development, in Argentina, of an opposition to the regime of Franco. The case of the newspaper España Republicana, due to its importance, is object of a particular analysis.

  10. Role of Argentine's "Alternative Money"%阿根廷"另类货币"的作用

    Institute of Scientific and Technical Information of China (English)

    温铁军

    2006-01-01

    @@ 另类货币(Alternative Currency),也有的地方称为社区信用(Community Credit),两者概念与内容有所不同,但目的都是建立"基于和谐社会的经济"(Solidarity Based Economy);服务的对象也主要是缺乏获得正规货币(Official Currency)能力的下层群众.

  11. Deep structure of the Argentine margin inferred from 3D gravity and temperature modelling, Colorado Basin

    Science.gov (United States)

    Autin, J.; Scheck-Wenderoth, M.; Götze, H.-J.; Reichert, C.; Marchal, D.

    2016-04-01

    Following previous work on the Colorado Basin using a 3D crustal structural model, we now investigate the presence of lower crustal bodies at the base of the crust using 3D lithospheric gravity modelling and calculations of the conductive thermal field. Our first study highlighted two fault directions and depocentres associated with thinned crust (NW-SE in the West and NE-SW at the distal margin). Fault relative chronology argues for two periods of extension: (1) NW-SE faulting and thinning in the western Colorado Basin and (2) NE-SW faulting and thinning related to the continental breakup and formation of the NE-SW-striking volcanic margins of the Atlantic Ocean. In this study, the geometry of modelled high-density Lower Crustal Bodies (LCBs) enables the reproduction of the gravimetric field as well as of the temperature measured in wells down to 4500 m. The modelled LCBs correlate with geological observations: (1) NW-SE LCBs below the deepest depocentres in the West, (2) NE-SW LCBs below the distal margin faults and the seaward dipping reflectors. Thus the proposed poly-phased evolution of the margin could as well correspond to two emplacement phases of the LCBs. The calculated conductive thermal field fits the measured temperatures best if the thermal properties (thermal conductivity and radiogenic heat production) assigned to the LCBs correspond to either high-grade metamorphic rocks or to mafic magmatic intrusions. To explain the possible lithology of the LCBs, we propose that the two successive phases of extension are accompanied by magma supply, emplaced (1) in the thinnest crust below the older NW-SE depocentres, then (2) along the NE-SW continentward boundary of the distal margin and below the volcanic seaward dipping reflectors. The South African conjugate margin records only the second NE-SW event and we discuss hypotheses which could explain these differences between the conjugate margins.

  12. Mastering the crisis? Sustaining governance in the Argentine Redes de Trueque

    NARCIS (Netherlands)

    G.M. Gómez (Georgina)

    2011-01-01

    textabstractAbstract: The Redes de Trueque (RT) thrived during the economic crisis of 2001 – 2002 in Argentina and still stand out as the largest Complementary Currency System in the world. These local exchange networks reach a large scale during times of severe economic distress, but as large non-s

  13. Long-term Outcome of Lupus Nephritis Class II in Argentine Patients

    Science.gov (United States)

    Collado, Maria Victoria; Dorado, Enrique; Rausch, Silvia; Gomez, Graciela; Khoury, Marina; Zazzetti, Federico; Gargiulo, María; Suarez, Lorena; Chaparro, Rafael; Paira, Sergio; Galvan, Laura; Juarez, Vicente; Pisoni, Cecilia; Garcia, Mercedes; Martinez, Liliana; Alvarez, Analia; Alvarez, Clarisa; Barreira, Juan; Sarano, Judith

    2016-01-01

    Background There is controversy in medical literature over the outcome of patients with lupus nephritis (LN) class II. The aim of this study was to explore the risk of histological transformation (HT) and possible factors related to negative response to treatment in patients with mesangial LN class II. Methods A retrospective and multicenter study was carried out that includes patients who had received a diagnosis of LN class II on their first renal biopsy. Creatinine, urine sediment, and proteinuria were recorded at the time of the first biopsy, 6 months, and 1, 2, and 5 years after the first biopsy. Response to treatment, HT, and long-term outcome were evaluated. Results Forty-one patients were included. The manifestation at first biopsy was proteinuria greater than 0.5 g/d in 28 patients (68.29%; 8 [28.57%] of 28 patients had nephrotic syndrome), hematuria in 18 patients (43.90%), and deterioration of renal function in 3 patients (7.31%). During the follow-up (median, 8 years; range, 1–35 years), a new biopsy was performed in 18 patients (43.90%), and in 17 patients (17/18 [94.44%]), there was HT. Median time at rebiopsy was 32 months (range, 11–305 months). Of the 18 patients who had a second biopsy, 10 (55.55%) were on hydroxychloroquine versus 100% (19/19) of patients who did not undergo the procedure (P = 0.001). A year after the first renal biopsy, there are data available from 34 patients; of them, 24 patients (70.58%) had achieved response, and 10 patients (29.41%) had no response (NR) (missing data in 7). A higher 24-hour urinary protein at 6 months was predictor of worse outcome at 1 year, with statistical significance difference for the nonresponder group (median proteinuria, 2.3 g/d [range, 0–4.7 g/d]) compared with responders (median proteinuria, 0.28 g/d [range, 0–1.7 g/d]) (P = 0.0133). In the long-term follow-up (5 years), HT was the main cause of unfavorable outcome and was measured in 78.57% of patients (11/14 patients). Conclusions This series shows a high rate of HT in long-term follow-up. Proteinuria at 6 months made it possible to set aside patients who will have an unfavorable outcome in the long term and who will thus benefit from a more aggressive treatment. The results suggest that hydroxychloroquine had a nephroprotective effect. PMID:27152693

  14. Political content on the recovery of Argentine companies. Notes for a demystifications

    Directory of Open Access Journals (Sweden)

    Susana Díaz Ruiz

    2015-11-01

    Full Text Available Amid a backdrop of deep economic crisis like the one that lives Argentina in 2001 produced the highest number of recoveries from the companies in the country. It is a collective response of defensive resistance starring workers to keep their jobs in a situation of extreme necessity, marked by the closure of the company and the difficulties in finding a job in this situation in which they reach unemployment and poverty figures hitherto unknown. The aim of this article is to address the political significance that has the recovery narrative subjectivity that workers have staged through the speeches collected between Chilavert workers, a business chart of Buenos Aires recovered in 2002.

  15. Science Information Programs: The Argentine Telex Network for Scientific and Technical Information.

    Science.gov (United States)

    National Academy of Sciences, Washington, DC.

    This document reports on two projects jointly sponsored by the National Academy of Science (NAS) (USA) and the Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET) (ARGENTINA). The first is the creation of a telex network for scientific libraries and documentation centers in Argentina, designed to improve access to, and delivery…

  16. Pathways towards to improve the feasibility of dairy pastoral system in La Pampa (Argentine

    Directory of Open Access Journals (Sweden)

    Elena Angón

    2015-11-01

    Full Text Available Over the last decade, pastoral systems have been intensified in response to an increasing demand for meat and milk, by generating environmental and social problems due to its high dependence on external inputs. The objective of this research was to analyze the economic feasibility of dairy pastoral system in La Pampa (Argentina. The main successful factors were identified through technical efficiency analysis, and subsequently improvement actions were suggested. The technique data envelopment analysis creates efficiency indexes by comparing the performance of each farm with the best practice, which defines the production frontier. The farms were classified attending to two criteria: first, the level of efficiency, second, the regular use of supplementation feed. The results showed that about 40% of the farms were efficient and the efficiency rate of the farms without supplementary feed was 80%. A 70% of the farms uses their own grassland resources adjusting milk yield to the capacity of the pasture. The technical efficiency for this group is 14% higher than the rest. Inefficient farms can adopt different strategies to enhance by practicing benchmarking. One of the examples studied shows two ways to do it: on the one hand the extensification by producing at a minimum cost; on the other hand, the technification, linked to the increase of stocking rate and the use of strategic supplementation. Finally, small changes in the management of the farms positively impact on performance, use of resources, and the sustainability of the system.

  17. ON WOMEN’S CULTURAL PATRIMONY IN THE ARGENTINE REPUBLIC: THEORETICAL PERSPECTIVES AND METHODOLOGICAL APPROACHES

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    Cecilia Lagunas

    2014-08-01

    Full Text Available This paper analyses the process of development of gender and women’s studies in public universities in Argentina, from their inception in the 1970s to their expansion throughout the 1980s and beginning of the 1990s. This accounts for more than 20 years of research and other contributions from the perspective of feminist theory to forge a more equal and just society, in which men and women rethink their roles within their private lives and in the exercise of their professional lives. This includes thinking about new identities – gender diversity – according to their felt and practiced sexuality, so as to include difference in the universe of heterosexual human practices.

  18. Consenso argentino de toxoplasmosis congénita Argentine Consensus of Congenital Toxoplasmosis

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    Ricardo Durlach

    2008-02-01

    Full Text Available La transmisión de la infección por Toxoplasma gondii de la madre al hijo ocurre cuando la madre se infecta por primera vez en el transcurso del embarazo. Tanto el diagnóstico prenatal, como el del primer año de vida se basa en pruebas serológicas; y la mayoría de las veces es necesario realizar más de una de estas pruebas ya que tienen distintos porcentajes de sensibilidad y/o especificidad así como distintos niveles de complejidad. El recién nacido requiere seguimiento serológico en el primer año de vida o hasta que se descarte el diagnóstico de toxoplasmosis congénita. El diagnóstico temprano de la infección, en la mujer embarazada, permite un tratamiento oportuno y se indica con el propósito de reducir la tasa de transmisión y el daño congénito. Es posible que con un programa activo, de prevención y tratamiento temprano, se pueda reducir la tasa de incidencia de la toxoplasmosis congénita de alrededor del 5 por mil nacimientos a 0.5 por mil. El objetivo de este consenso fue revisar la literatura científica para la prevención, el diagnóstico y el tratamiento de la toxoplasmosis congénita, para que se pueda implementar en nuestro país.The mother-to-child transmission in Toxoplasma gondii infection occurs only when the infection is acquired for the first time during pregnancy. The prenatal and early postnatal diagnosis can only be achieved by serological testing. Serologic tests have different sensitivities, specificities and complexities, so that different tests in more than one blood sample are necessary for the diagnosis. Serological follow-up of the infants should be conducted during the first year of life or until the diagnosis of congenital toxoplasmosis can be ruled out. Treatment recommendations try to reduce the transmission rate and the risk of congenital damage. Congenital toxoplasmosis incidence rate is approximately 5 per 1000 births, but can be reduced to 0.5 per 1000 with an active screening program. The aim of this consensus group was to review the scientific literature on congenital toxoplasmosis and prepare a statement on prevention, diagnosis and treatment that should be implemented in our country.

  19. PUBLIC SHIPYARDS AND ARGENTINE SHIPBUILDING INDUSTRY: RECENT HISTORY AND FUTURE CHALLENGES

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    Cintia Russo

    2013-06-01

    Full Text Available This paper deals with the study of recent developments in the shipbuilding industry in Argentina and public shipyards (Astillero Rio Santiago, and Talleres Navales Dársena Norte. Our hypothesis implies a strong relationship between the State, acting as a regulator, producer, and financier and the shipbuilding industry, in particular the public shipyards. From a conceptual point of view, the aim of this paper is to contribute to a broader debate about the relations between the State and the industrialisation. From an empirical point of view, we identify and explain this link trough the path of an industrial sector. The consequences of the orthodox policy in the shipbuilding industry led to a systematic reduction of the activity, causing the closure of shipyards, and the near disappearance of the naval parts suppliers. Changes in the course of public policy since the beginning of the XXI century created the conditions of possibility of public shipyards.

  20. Risky Invasions: Decisions Made by the Argentine Junta Regarding Disputed Islands, 1978-1982

    Science.gov (United States)

    2011-09-01

    Estratégica: El caso de Chile y Argentina.” Pensamiento Propio, Issue 14 (July–December 2001), 69–70. 48 Waisman, Reversal of Development, 282. 49... Pensamiento Propio, Issue 14 (July–December 2001), 65–104 (my translation). Arceneaux, Craig L. 2001. Bounded Missions: Military Regimes and Democratization

  1. The key role of cultural preservation in maize diversity conservation in the argentine yungas.

    Science.gov (United States)

    Hilgert, Norma I; Zamudio, Fernando; Furlan, Violeta; Cariola, Lucía

    2013-01-01

    Farmers' decisions on what to grow and why can contribute in understanding the conservation of agrobiodiversity. Culture and ethnicity are indicated as first-class factors leading preservation of heirloom cultivars but this has been little considered in studies examining factors that influence the loss or preservation of agrobiodiversity. We propose that corn's ethnotaxa of less diverse uses, which are also key partners in local cultural reproduction, are usually cultivated by a few households. We analyse if there is a relationship between uses and richness of cultivated ethnotaxa at household level and describe corn's medicinal and ritual uses. We found 25 cultivated ethnotaxa, heterogeneously distributed in the region, and we also found that ethnotaxa with less diverse uses are cultivated in fewer households. We identified that, at regional scale, richness is related with food use diversity. The most frequently cited medicinal uses were urinary and tract infections, diarrhoea, and liver disorders. Medicinal recipes involve combinations with other elements. Maize is an indispensable resource in the rituals that propitiate productive activity, to augur prosperity or misfortune according to signals. We have identified the vulnerability in preserving the richness of corn in the region and the factors that shape its cultivation at different scales.

  2. The Key Role of Cultural Preservation in Maize Diversity Conservation in the Argentine Yungas

    Directory of Open Access Journals (Sweden)

    Norma I. Hilgert

    2013-01-01

    Full Text Available Farmers’ decisions on what to grow and why can contribute in understanding the conservation of agrobiodiversity. Culture and ethnicity are indicated as first-class factors leading preservation of heirloom cultivars but this has been little considered in studies examining factors that influence the loss or preservation of agrobiodiversity. We propose that corn’s ethnotaxa of less diverse uses, which are also key partners in local cultural reproduction, are usually cultivated by a few households. We analyse if there is a relationship between uses and richness of cultivated ethnotaxa at household level and describe corn’s medicinal and ritual uses. We found 25 cultivated ethnotaxa, heterogeneously distributed in the region, and we also found that ethnotaxa with less diverse uses are cultivated in fewer households. We identified that, at regional scale, richness is related with food use diversity. The most frequently cited medicinal uses were urinary and tract infections, diarrhoea, and liver disorders. Medicinal recipes involve combinations with other elements. Maize is an indispensable resource in the rituals that propitiate productive activity, to augur prosperity or misfortune according to signals. We have identified the vulnerability in preserving the richness of corn in the region and the factors that shape its cultivation at different scales.

  3. Consenso Argentino De Ventilacion No Invasiva Argentine consensus of non-invasive ventilation

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    Ana R. Diez

    2005-10-01

    Full Text Available La ventilación no invasiva (VNI ha alcanzado notable difusión en los últimos años. El ahorro de las complicaciones causadas por la intubación traqueal la hace especialmente atractiva en pacientes que presentan insuficiencia respiratoria aguda (IRA no muy grave y que conservan cierta autonomía respiratoria. También se han descripto efectos terapéuticos en pacientes con insuficiencia respiratoria crónica de etiologías diversas. No obstante, los resultados obtenidos son variables según las circunstancias que motivan su aplicación. A fin de revisar la evidencia a favor de su uso se elaboró este Consenso referido particularmente a la VNI a presión positiva. Se describen su fundamento fisiopatológico, esencial para su correcta aplicación, y el equipamiento necesario para implementarla. La evidencia existente en la literatura establece definida utilidad de la VNI en la exacerbación de la EPOC y en el edema agudo de pulmón cardiogénico (Recomendación A. Su beneficio es aún incierto en pacientes con IRA secundaria a síndrome de dificultad respiratoria aguda, salvo en el subgrupo de pacientes inmunosuprimidos (Recomendación B. Los resultados son también favorables en la desvinculación de la asistencia respiratoria mecánica (ARM, especialmente en pacientes ventilados por exacerbación de EPOC (Recomendación A. En la insuficiencia respiratoria crónica se ha hallado mejoría en la calidad de vida y mayor sobrevida en pacientes con enfermedades restrictivas (Recomendación B, mientras que existe aún controversia sobre su utilidad en pacientes con EPOC estable (Recomendación C. La VNI debe ser aplicada con estándares de cuidados que son establecidos. Se revisan las eventuales complicaciones derivadas de su uso y el beneficio costo-efectividad ahorrando recursos de mayor complejidad y disminuyendo los riesgos que implica la ARM invasiva.Non-invasive ventilation (NIV is nowadays increasingly used. The significant decrease in tracheal intubation related complications makes it particularly attractive in patients with moderately acute respiratory failure (ARF who still have some degree of respiratory autonomy. It has also been used to support patients with chronic respiratory failure. However, final outcomes are variable according to the conditions which determined its application. This Consensus was performed in order to review the evidence supporting the use of positive pressure NIV. The patho-physiological background of NIV and the equipment required technology are described. Available evidence clearly suggests benefits of NIV in acute exacerbation of chronic obstructive pulmonary disease (COPD and in cardiogenic pulmonary edema (Recommendation A. When considering ARF in the setting of acute respiratory distress syndromeresults are uncertain, unless dealing with immunosupressed patients (Recommendation B. Positive results are also shown in weaning of mechanical ventilation (MV, particularly regarding acute exacerbation of COPD patients (Recommendation A. An improved quality of life in chronic respiratory failure and a longer survival in restrictive disorders has also been shown (Recommendation B while its benefit in stable COPD patients is still controversial (Recommendation C. NIV should be performed according to pre-established standards. A revision of NIV related complications is performed and the cost-benefit comparison with invasive MV is also considered.

  4. Hyperinflation argentine de 1989 : une interprétation post-keynésienne

    OpenAIRE

    2014-01-01

    L’article poursuit un double objectif. Le premier vise à proposer une interprétation de l’hyperinflation compatible avec la théorie post-keynésienne. L’analyse des phénomènes hyperinflationnistes par les auteurs post-keynésiens mais aussi par les auteurs structuralistes permet de nourrir notre réflexion. Nous mettons l’accent sur l’importance de la présence d’une devise dans les comportements domestiques au cours des hautes inflations. D’ailleurs, selon nous, l’hyperinflation est indissociabl...

  5. How to Approach the Next Steps of the Argentine Economy and the Economic Policy?

    OpenAIRE

    Eduardo L. Curia

    2007-01-01

    In a context of uncertainty, economic policy-making benefits from the availability of “modeled constructions” contributing to the understanding of the economic phenomenon and the possibility of forecasting, even though by themselves they do not determine the decisions to be made by government authorities. The paper called Un modelo económico pequeño para la Argentina (A small economic model for Argentina) is a contribution in this sense. Naturally, such presentations are tributaries, in a cry...

  6. Quaternary tectonic movements in the Argentine Puna, 24/sup 0/ to 27/sup 0/ s latitude

    Energy Technology Data Exchange (ETDEWEB)

    Strecker, M.R.; Alonso, R.; Rivelli, F.; Mon, R.

    1985-01-01

    The Puna of NW Argentina, one of the highest plateaus in the world, is the southern continuation of the Andean Altiplano geomorphic province of Peru and Bolivia. The region is not seismically active and reports of neotectonic movements are scarce. However, the areas of Salar de los Pastos Grandes, Salar del Hombre Muerto and Sierra Calalaste clearly have experienced Quaternary tectonic movements. At Salar de los Pastos Grandes, early Pleistocene lake sediments are offset by reverse faulting. At Salar del Hombre Muerto, Quaternary pyroclastic and debris-flow deposits are unconformable over sediments 5.86 m.y. old that were folded during the Pliocene-Pleistocene Diaguita deformation. Within the Quaternary sediments two separate deformational phases with reverse faulting and shallow thrusting are recognized. The timing of movement is well defined since the deformed strata are covered by a basalt flow 0.75 m.y. old. The flow in turn is affected by normal faulting. Similar normal faults associated with basalt flows were found at Sierra Calalaste. These observations are in accord with pronounced extensional movements and basaltic volcanism at the Calama-Olacapato-Toro Lineament (0.2 m.y. old flows) and might document the Quaternary transition from a compressive to an extensional tectonic regime in the southern Puna.

  7. The construction of child malnutrition in Argentine print media during the 2001 crisis

    Directory of Open Access Journals (Sweden)

    Flavia Demonte

    2011-01-01

    Full Text Available En la Argentina de 2001, en diferentes ámbitos (político-técnicos, académicos, mediáticos se temía sobre el impacto que la situación de crisis podía tener en el estado nutricional de la población en situación de pobreza. Los medios de comunicación se erigieron como los actores protagónicos en el proceso de construcción del problema en ese contexto. En este artículo se analiza la construcción de la malnutrición infantil entre diciembre de 2001 y diciembre 2002, identificando las representaciones que sobre la misma organizaron el discurso de la prensa escrita en tanto actor representativo del espacio público. Metodológicamente, se utilizó un enfoque cualitativo y un tipo de investigación exploratoria-descriptiva. La técnica de recolección de la información fue la documental y el procesamiento y análisis se realizó bajo la metodología del análisis del discurso. Los principales resultados evidencian la persistencia de ciertas representaciones ligadas al problema, aun en contra de los datos epidemiológicos producidos durante el mismo período. Las representaciones identificadas, estructuradoras de las estrategias de intervención, dan cuenta de los sentidos que adquieren la alimentación, la enfermedad y el cuerpo enfermo, las medidas necesarias para "resolverla", el lugar de los actores en el espacio social y la interacción entre Estado y sociedad.

  8. Technological behaviour of Argentine public enterprises: the case of yacimientos petroliferos fiscales.

    OpenAIRE

    Lucangeli J

    1986-01-01

    ILO pub-WEP pub. Working paper, case study of technological change at the Yacimientos Petroliferos Fiscales petroleum refinery (public enterprise) in Argentina, 1950-1980 - discusses technical aspects; considers short term and long term factors influencing decision making concerning technological change, including industrial policy and petroleum prices; examines the petroleum product mix; makes comparisons of its efficiency with private enterprises. Diagrams, graphs, references, statistical t...

  9. An alternative view of the argentine crisis: structural flaws and structural adjustmet policy

    Directory of Open Access Journals (Sweden)

    Jan Kregel

    2003-01-01

    Full Text Available Este documento discute la explicación convencional sobre la crisis argentina. Contrario a lo que comúnmente se acepta, el problema no se debió a una laxa política fiscal, sino a debilidades estructurales en el tan alabado programa de estabilización instaurado al comienzo de la década de los noventa. El modelo fue incapaz de corregir el persistente monto de endeudamiento, lo cual expuso a la economía a choques externos y la hizo viciosamente dependiente de flujos de capital externo. La explicación de la caída de Argentina es puesta en perspectiva histórica pues se ofrece una detallada evolución de las decisiones del gobierno, los cambios políticos así como un detallado análisis del mecanismo de ajuste automático que, supuestamente, era la principal característica que ofrecía la Junta Monetaria. El documento hace alusión a la volatilidad que experimen-taron los llamados mercados emergentes durante la “frenética” década de los noventas. Por último, aunque no menos importante, aporta una acertada reflexión sobre la poste-ridad de la crisis.

  10. Evaluation of aluminum-clad spent fuel corrosion in Argentine basins

    Energy Technology Data Exchange (ETDEWEB)

    Haddad, R.; Loberse, A.N.; Semino, C.J.; Guasp, R. [CNEA, Buenos Aires (Argentina)

    2001-07-01

    An IAEA sponsored Coordinated Research Program was extended to study corrosion effects in several sites. Racks containing Aluminum samples were placed in different positions of each basin and periodic sampling of all the waters was performed to conduct chemical analysis. Different forms of corrosion have been encountered during the programme. In general, the degree of degradation is inversely proportional to the purity of the water. Maximum pit depths after 2 years of exposure are in the range of 100-200 {mu}m. However, sediments deposited on the coupon surfaces seem to be responsible for the developing of large pits (1-2 mm in diameter). In many cases, what appears to be iron oxide particles were found originated by the corrosion of carbon steel components present elsewhere in the basin. These results correlate with observations made on the fuel itself, during exhaustive visual inspection. (author)

  11. History and the Popular: Rewriting National Origins at the Argentine Bicentenary

    Directory of Open Access Journals (Sweden)

    Catriona McAllister

    2016-04-01

    Full Text Available This article explores two texts that offer a self-conscious, metafictional rewriting of Argentina’s founding revolution in May 1810 at the time of the nation’s Bicentenary. It aims to draw out the political focus of both texts (a novel by Washington Cucurto and a play by Manuel Santos Iñurrieta by analysing the ways in which they draw on heavily politicized historical discourses in their fictional appropriations of this moment of origin. This analysis leads to the emergence of two very different ideas of the popular in both works, one closely related to Peronist discourse and the other entwined with the Marxist concept of the proletariat. This article therefore argues for the need to reconsider the definitions of the relationship between literature and history that emerge from postmodernist theory, definitions which centre on the epistemological relationship between ‘fiction’ and ‘fact’. Instead, it proposes a foregrounding of public discourses of history, often employed as political tools, in order to perceive a far more detailed engagement with the political in literary texts that rewrite history.This article is published under a CC-BY license https://creativecommons.org/licenses/by/3.0/

  12. Morphological and speleothemic development in Brujas Cave (Southern Andean Range, Argentine): palaeoenvironmental significance

    Science.gov (United States)

    Sancho, Carlos; Peña, José Luis; Mikkan, Raúl; Osácar, Cinta; Quinif, Yves

    2004-02-01

    Brujas Cave, in the Southern Andean Range, is a well-known endokarstic site in Argentina. However, the origin and evolution of this cave system are poorly known. Based on morphological cave features as well as characteristics of cave deposits, we propose a meteogene drawdown cave genesis, including a change from phreatic to vadose conditions related to the high rate of fluvial downcutting in the area. During the vadose period, various cave-related deposits, including authogenic calcite and gypsum speleothems, allogenic volcanic ash and external tufas were deposited. Gypsum crusts are the oldest cave deposits identified (90.2-64.3 ky BP). Their origin, deduced from isotopic characteristics ( ∂34S=9.6‰), is related to the oxidation of pyrite contained in the Jurassic limestone bedrock as well as the dissolution of overlying Jurassic-Triassic evaporite formations. Gypsum crust deposition is associated with evaporation of water flowing and seeping into the cave during arid environmental conditions. Calcite deposits precipitated from flowing water under equilibrium conditions represent the main speleothem growth period (67.6-34 ky BP in age). Their stable isotope values ( ∂13C=-3‰ to -5‰ and ∂18O=-9‰ to -11‰) may indicate slightly humid and warm conditions related to the regional Minchin lacustrine phase and global oxygen isotope stage 3. Following this stage, a seismic event is evidenced by accumulations of broken stalactites. Seepage calcite speleothems covering cave walls were deposited under disequilibrium conditions by evaporation, probably during Holocene time. Finally, another more recent gypsum deposition period represented by gypsum balls has been differentiated. Micromorphological as well as isotopic ( ∂34S=5.6‰) data indicate that these gypsum forms are related to cyclic processes (solution-deposition) from water seeping into the cave under arid conditions. In addition, intense volcanic activity in the area during Holocene time is deduced from allogenic volcanic ash and lapilli located mainly at the entrance cave. At present, limited hydrological activity is observed in the cave and small tufa deposits at karstic discharge points are evidenced. We conclude that the geomorphological evolution of Brujas Cave was controlled by climatic changes (wet and dry stages) under semiarid environmental conditions in a very active tectonic and volcanic setting during Late Quaternary time.

  13. Training of manpower resources at the National Atomic Energy Commission of Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Ambrosis de Libanati, N. (Comision Nacional de Energia Atomica, Buenos Aires (Argentina). Dept. de Capacitacion y Evaluacion de Personal)

    The main factors that influenced the development of the manpower resources required by CNEA over its thirty years of life are discussed: a careful specialized training; basic and applied research groups as a basic support for the other activities; teams responsible for the applications and for the concrete realizations of increasing complexity carried out by CNEA, culminating with the nuclear power plants; CNEA's relations with the national educational system regarding nuclear specialization; CNEA's international interaction, either by the participation of foreigners in its internal courses, by the commissioning of Argentinians abroad, and by the cooperation with international agencies in organizing courses, seminars and conferences; the influence of the radiological protection and nuclear safety requirements on the training programs, on nuclear industry, and on the users of radioisotopes and radiations; the importance of feeding the results of each activity back into the system so as to obtain a dynamic programming adapted to the requirements at all times.

  14. Effect of a community-based Argentine tango dance program on functional balance and confidence in older adults.

    Science.gov (United States)

    McKinley, Patricia; Jacobson, Allison; Leroux, Alain; Bednarczyk, Victoria; Rossignol, Michel; Fung, Joyce

    2008-10-01

    Tango-dancing and walking programs are compared in nondemented seniors at risk for falls. Fallers (N = 30) age 62-91 were randomly assigned to a 10-wk (40 hr, 2 hr 2x/wk) tango class or walk group. The Activities-specific Balance Confidence (ABC) scale, sit-to-stand scores, and normal and fast walk were measured pre-, post-, and 1 month postintervention. Two-way repeated-measures ANOVAs indicated a significant main effect (p tango because of high baseline mean for the walk group. Clinical improvements measured using Established Populations for Epidemiologic Studies of the Elderly scoring were greater for the tango group. From these preliminary results it is suggested that although both interventions are effective activities for increasing strength and walk speed, tango might result in greater improvements than walking in balance skills and in walking speed in the 10-wk intervention. The study needs to be repeated with a greater sample size to determine the effectiveness of walking on fear of falling.

  15. CHARACTERIZATION OF CELL WALL POLYSACCHARIDES OF THE COENCOCYTIC GREEN SEAWEED BRYOPSIS PLUMOSA (BRYOPSIDACEAE, CHLOROPHYTA) FROM THE ARGENTINE COAST(1).

    Science.gov (United States)

    Ciancia, Marina; Alberghina, Josefina; Arata, Paula Ximena; Benavides, Hugo; Leliaert, Frederik; Verbruggen, Heroen; Estevez, Jose Manuel

    2012-04-01

    Bryopsis sp. from a restricted area of the rocky shore of Mar del Plata (Argentina) on the Atlantic coast was identified as Bryopsis plumosa (Hudson) C. Agardh (Bryopsidales, Chlorophyta) based on morphological characters and rbcL and tufA DNA barcodes. To analyze the cell wall polysaccharides of this seaweed, the major room temperature (B1) and 90°C (X1) water extracts were studied. By linkage analysis and NMR spectroscopy, the structure of a sulfated galactan was determined, and putative sulfated rhamnan structures and furanosidic nonsulfated arabinan structures were also found. By anion exchange chromatography of X1, a fraction (F4), comprising a sulfated galactan as major structure was isolated. Structural analysis showed a linear backbone constituted of 3-linked β-d-galactose units, partially sulfated on C-6 and partially substituted with pyruvic acid forming an acetal linked to O-4 and O-6. This galactan has common structural features with those of green seaweeds of the genus Codium (Bryopsidales, Chlorophyta), but some important differences were also found. This is the first report about the structure of the water-soluble polysaccharides biosynthesized by seaweeds of the genus Bryopsis. These sulfated galactans and rhamnans were in situ localized mostly in two layers, one close to the plasma membrane and the other close to the apoplast, leaving a middle amorphous, unstained cell wall zone. In addition, fibrillar polysaccharides, comprising (1→3)-β-d-xylans and cellulose, were obtained by treatment of the residue from the water extractions with an LiCl/DMSO solution at high temperature. These polymers were also localized in a bilayer arrangement.

  16. Benchmarking Prehospital and Emergency Department Care for Argentine Children with Traumatic Brain Injury: For the South American Guideline Adherence Group

    Science.gov (United States)

    Vavilala, Monica S.; Lujan, Silvia B.; Qiu, Qian; Petroni, Gustavo J.; Ballarini, Nicolás M.; Guadagnoli, Nahuel; Depetris, María Alejandra; Faguaga, Gabriela A.; Baggio, Gloria M.; Busso, Leonardo O.; García, Mirta E.; González Carrillo, Osvaldo R.; Medici, Paula L.; Sáenz, Silvia S.; Vanella, Elida E.; Fabio, Anthony; Bell, Michael J.

    2016-01-01

    Objective There is little information on the type of early care provided to children with traumatic brain injury (TBI) in low middle income countries. We benchmarked early prehospital [PH] and emergency department [ED] pediatric TBI care in Argentina. Methods We conducted a secondary analysis of data from patients previously enrolled in a prospective seven center study of children with TBI. Eligible participants were patients 0–18 years, and had diagnosis of TBI (admission Glasgow Coma scale score [GCS] 0). Outcomes were transport type, transport time, PH and ED adherence to best practice, and discharge Pediatric Cerebral Performance Category Scale (PCPC) and Pediatric Overall Performance category Scale (POPC). Results Of the 366 children, mean age was 8.7 (5.0) years, 58% were male, 90% had isolated TBI and 45.4% were transported by private vehicle. 50 (34.7%) of the 144 children with severe TBI (39.3% of all TBI patients) were transported by private vehicle. Most (267; 73%) patients received initial TBI care at an index hospital prior to study center admission, including children with severe (81.9%) TBI. Transport times were shorter for those patients who were directly transported by ambulance to study center than for the whole cohort (1.4 vs.5.5 hours). Ambulance blood pressure data were recorded in 30.9%. ED guideline adherence rate was higher than PH guideline adherence rate (84.8% vs. 26.4%). For patients directly transferred from scene to study trauma centers, longer transport time was associated with worse discharge outcome (PCPC aOR 1.10 [1.04, 1.18] and (POPC aOR 1.10 [1.04, 1.18]). There was no relationship between PH or ED TBI guideline adherence rate and discharge POPC and PCPC. Conclusion This study benchmarks early pediatric TBI care in Argentina and shows that many critically injured children with TBI do not receive timely or best practice PH care, that PH guideline adherence rate is low and that longer transport time was associated with poor discharge outcomes for patients with direct transfer status. There is an urgent need to improve the early care of children with TBI in Argentina, especially timely transportation to a hospital. PMID:28005912

  17. Argentine Beekeeping Industry%中国养蜂业与阿根廷养蜂业的差异

    Institute of Scientific and Technical Information of China (English)

    陈黎红; 吴杰; 张复兴; 刁青云; 王建梅; 王秀红

    2009-01-01

    阿根廷是南美洲养蜂业最发达、年产蜂蜜量最高、出口量最多的国家。早在1851年,就有文字记载养蜂,随欧洲移民的迁入,西方蜜蜂被引进了阿根廷。经过100多年的发展,阿根廷已成为世界第三大蜂蜜生产国和第二大蜂蜜出口国(2002年前),2002年之后,由于欧盟禁进中国蜂蜜,并迅速波及美国、加拿大、日本、沙特等国,阿根廷则一跃而上,成为世界蜂蜜第一大出口国,至今仍居世界榜首。

  18. New tools (DNA barcoding), old hypothesis: the case of the taxonomic identity of the Argentine hakes (Actinopterygii: Merluccius).

    Science.gov (United States)

    Deli Antoni, M Y; González-Castro, M; Díaz de Astarloa, J M

    2015-09-01

    The present study evaluated the possible occurrence of cryptic species among Merluccidae from Argentina by examining sequences of cytochrome c oxidase subunit I (coI) mtDNA. This approach can discriminate Merluccius hubbsi and Merluccius australis; specimens with morphological diagnostic characters of Merluccius patagonicus formed a cohesive cluster with M. hubbsi specimens. BIN analysis confirmed the effectiveness of barcoding within a global context.

  19. Compte rendu de la 18e Conférence Internationale sur le Tournesol : Mar del Plata & Balcarce (Argentine, 2012

    Directory of Open Access Journals (Sweden)

    Pilorgé Étienne

    2012-11-01

    Full Text Available The 18th International Sunflower Conference took place in Mar del Plata, Argentina, in February, 2012. The key-points and evolutions of sunflower research were presented, in the fields of agronomy, physiology, genetics and genomics, crop protection, quality and markets. Major evolutions can be observed concerning the sequencing of sunflower genome, announced to be complete by the end of 2012, but also concerning the use of models and the progress in the studies on the interactions between varieties genetic pattern, environment and crop management practices. In crop protection aspects, the evolutions of the major pathogens, downy mildew and Orobanche cumana, have been discussed, as well as the breeding efforts for genetic resistances, or the advances concerning the herbicides tolerant varieties. Evolutions in oil quality aspects have been exposed too, such as varieties enriched in stearic acid, or tocopherols, or with low contents in saturated fatty acids.

  20. Formas encefalopaticas de enfermedad de Chagas cronica observadas en Argentina Encephalopathic form of chronic Chagas' disease observed in Argentine

    Directory of Open Access Journals (Sweden)

    Miguel Eduardo Jorg

    1981-12-01

    Full Text Available Se describen las características clínicas y las manifestaciones dominantes en 22 enfermos observados entre 1963 y 1978 sobre un total de 420 con neuropatías diversas examinados en el area central Norte de la Argentina; afectados por una encefalopatía crónica, que, por hallazgos de laboratorio (demostración del parasito en sangre o en su defecto confirmacion por mas de una prueba serológica positiva y por las correlaciones anatomoclínicas, puede ser imputada a la infección por el Trypanosoma cruzi. En la mitad o mas de los enfermos, son salientes las siguientes manifestaciones: disprosexia y confusión en 81,8%; cefalea y confusión en 72,7%; debilitamiento de reflejos músculo-tendinosos y trastornos del lenguaje en 63,6%; dispraxias en 59%; trastornos de la marcha y crisis mioclónicas en 54,5%; bradicinesias en 50%. En menor escala se encontraron: parestesias, ideas delirantes, perturbaciones cerebelares, crisis de vertigo, diplopia, lipotimias,humor fluctuante. Las menos frecuentes: disautonomia y excitacion. En 8 se hallaron evidencias semiologicas de cardiopatias y en 2 de compromiso digestivo grosero. Se analiza el alcance de esta casuistica en relación a los hallazgos anatomopatológicos en casos mortales y con referencia a lo ya conocido sobre la forma neuropatologica de la enfermedad de Chagas cronica.Among 420 patientes found with diverse subacute and chronic neuropathies, 22 were diagnosed as cases of true trypanosomic encephalopathy by means of the demonstration of parasites in blood (by xenodiagnosis or hemoculture or through serologic tests. In 50% or more of those patientes, following semiologic elements were prevalente: dysprosexia and depression in 81.8%; cephalea and confusion in 72.7%; weakness of muscular-tendineous reflexes and speech disturbance in 63.6% dispraxies in 59.0%; disturbances of gait and myoclonic crises in 54.5%; bradikinesias in 59.0%. Other symptoms were verified in a mirror scale: paresias, delirant ideas, cerebral pertubation, dizziness fits, diplopia, lipothymes, fluctuant humour, disautonomic syndrome and excitation. In 8 patients a clinically perceptible cardiopathy was verified and in 2 digestive problems were found. A discussion of the facts already exposed about the chagasic chronic encephalopathy in comparison to the findings of other authors is carried out.

  1. Election of water resources management entity using a multi-criteria decision (MCD method in Salta province (Argentine

    Directory of Open Access Journals (Sweden)

    Juan B. Grau

    2009-08-01

    Full Text Available At present, the water resources are a strategic element, each time more necessary and limited becoming a source of conflicts. For that, it is fundamental to create an independent and competent entity with good reputation and social acceptation. This entity, must be able to obtain, store and process all data dispersed in different entities creating a network for these purposes. Finally, it must be able to organize different branches between the government and the final users. Using one of the well-known Multicriteria Decision Methods (MCDM with several realistic alternatives and several criteria identified in expert seminars in Salta and Madrid, we have obtained hopeful results and more recently, new modifications introduced have generated better results.

  2. Where do these bugs come from? Phenotypic structure of Triatoma infestans populations after control interventions in the Argentine Chaco

    Directory of Open Access Journals (Sweden)

    María Sol Gaspe

    2015-05-01

    Full Text Available House re-invasion by native triatomines after insecticide-based control campaigns represents a major threat for Chagas disease vector control. We conducted a longitudinal intervention study in a rural section (Area III, 407 houses of Pampa del Indio, northeastern Argentina, and used wing geometric morphometry to compare pre-spray and post-spray (re-infestant bugs Triatoma infestans populations. The community-wide spraying with pyrethroids reduced the prevalence of house infestation by T. infestans from 31.9% to < 1% during a four-year follow-up, unlike our previous studies in the neighbouring Area I. Two groups of bug collection sites differing in wing shape variables before interventions (including 221 adults from 11 domiciles were used as a reference for assigning 44 post-spray adults. Wing shape variables from post-spray, high-density bug colonies and pre-spray groups were significantly different, suggesting that re-infestant insects had an external origin. Insects from one house differed strongly in wing shape variables from all other specimens. A further comparison between insects from both areas supported the existence of independent re-infestation processes within the same district. These results point to local heterogeneities in house re-infestation dynamics and emphasise the need to expand the geographic coverage of vector surveillance and control operations to the affected region.

  3. Modeling excitation-emission fluorescence matrices with pattern recognition algorithms for classification of Argentine white wines according grape variety.

    Science.gov (United States)

    Azcarate, Silvana M; de Araújo Gomes, Adriano; Alcaraz, Mirta R; Ugulino de Araújo, Mário C; Camiña, José M; Goicoechea, Héctor C

    2015-10-01

    This paper reports the modeling of excitation-emission matrices for classification of Argentinean white wines according to the grape variety employing chemometric tools for pattern recognition. The discriminative power of the data was first investigated using Principal Component Analysis (PCA) and Parallel Factor Analysis (PARAFAC). The score plots showed strong overlapping between classes. A forty-one samples set was partitioned into training and test sets by the Kennard-Stone algorithm. The algorithms evaluated were SIMCA, N- and U-PLS-DA and SPA-LDA. The fit of the implemented models was assessed by mean of accuracy, sensitivity and specificity. These models were then used to assign the type of grape of the wines corresponding to the twenty samples test set. The best results were obtained for U-PLS-DA and SPA-LDA with 76% and 80% accuracy.

  4. Pastoreo caprino en el monte formoseño (Argentina - (Goat cattle shepherding in formosa mount (Argentine

    Directory of Open Access Journals (Sweden)

    HELGUERO, pedro Santiago

    2005-11-01

    Full Text Available La conducta de las cabras como la del resto de los animales, resultada de complejas relaciones que se establecen entre ellos y el medio. El comportamiento tiene en su origen dos conductas básicas: la conducta innata, constituida por patrones conductuales instintivos propios de una especie que heredan todos los miembros de una especie determinada y desarrollan de igual forma, manifestándose en conducta de alimentación, reproducción y mecanismos de alerta entre otros, y la conducta adquirida, que comprende todos aquellos comportamientos adquiridos en el transcurso de la vida, a través del aprendizaje, por medio del ensayo-error (experiencias positivas y negativas y que varía de un individuo a otro de la misma especie. El ganado caprino se destaca por la movilidad y sensibilidad de los labios superiores, la fina y larga estructura de la cara, la buena capacidad de apertura de la boca, la destreza para consumir apoyados en dos patas, particularidad que permite al caprino a sobrevivir en ambientes desfavorables, donde la escasez de alimentos es frecuente. En el presente trabajo no se identificaron las especies forestales presente en la superficie de pastoreo en razón de que el objetivo del mismo fue: Identificar los hábitos y rutinas durante el pastoreo del ganado caprino, en el monte formoseño. Para analizar los hábitos y rutinas durante el pastoreo del ganado caprino se tuvieron en cuenta las siguientes actividades: pastoreo, rumia, descanso, caminar y beber agua. The conduct of the goats as that of the rest of the animals, proved from complex relations that are established between them and the way. The behavior has its origin in two basic conducts: the innate conduct constituted by behavioral instinctive proper bosses of the species who inherit all the members of a certain species and develop of equal form, demonstrating in conduct of nourishment, reproduction and mechanisms of alert between others, and the acquired conduct, that includes all those behaviors acquired in the course of the life, across the learning, by means of the test-mistake (positive and negative experiences and that changes from an individual to other one of the same species. The goats are outlined for the mobility and sensibility of the top lips, the thin and long structure of the face, the good capacity of opening of the mouth, the skill to consume leaned on two legs, particularity that allows the goats to surviving in unfavorable environments, where the food shortage is frequent. In the present workshop the forest species were not identified in the surface of shepherding in reason of which the aim of the same one was: To identify the habits and routines during the shepherding of the goats, in the mount of Formosa. To analyze the habits and routines during the shepherding of the goats were had in one count the following

  5. Los repositorios de acceso abierto en Argentina: situación actual Open access repositories in Argentine: an update

    Directory of Open Access Journals (Sweden)

    Carolina De Volder

    2008-12-01

    Full Text Available Se llevó a cabo una caracterización básica y descriptiva de los repositorios argentinos de acceso abierto. Se identificaron quince repositorios: siete institucionales pertenecientes a cinco universidades nacionales; cuatro temáticos; tres de tesis y disertaciones y una biblioteca digital exclusivamente de revistas. De la investigación, se desprende que en nuestro país no hay políticas públicas ni mandatos relacionados con el acceso abierto; sí proyectos aislados surgidos y mantenidos en general por la iniciativa y el trabajo de los bibliotecarios, sobre todo en el ámbito universitario.A basic and descriptive characterization of the Argentinean repositories of open access was carried out. Fifteen repositories were identified: seven institutional belonging to five national universities; four thematic; three of thesis and dissertations and a digital library exclusively of journals. The results show that Argentina has not public policies or mandates in relation to open access. However, it has only isolated projects generally supported by the initiative and work of librarians, most of them in the university field.

  6. Enteroparasitosis infantil en un área urbana del nordeste argentino Children enteroparasitosis in North East Argentine urban area

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    Alicia M. F. Milano

    2007-06-01

    Full Text Available El objetivo del presente trabajo fue evaluar las enteroparasitosis en una población infantil urbana y establecer su relación con factores biológicos y condiciones ambientales. Se investigaron 113 niños entre 0 y 14 años de edad. En cada niño se realizaron exámenes coproparasitológicos y test de Graham y se valoró el estado nutricional. Para el registro de datos ambientales se aplicaron encuestas semiestructuradas. Se analizó la contaminación del suelo. Se identificó Blastocystis hominis, Enterobius vermicularis, coccidios, Giardia intestinalis, uncinarias, Strongyloides stercoralis, Trichuris trichura, Ascaris lumbricoides, Entamoeba coli, Endolimax nana y Taenia sp. La prevalencia de parasitados fue 73.5%. Se verificó mayor frecuencia de enteroparasitosis en la franja etaria de 3 a 8 años. Las viviendas analizadas (n=44 eran de material con techo de chapa, contaban con red de agua potable; el 79.5% poseía baño instalado, las restantes poseían letrinas. En el 95.5% de las unidades domésticas había uno o más perros y gatos. El suelo de nueve viviendas estuvo contaminado con formas infectantes de Toxocara canis y ancilostomídeos. Se comprobó asociación entre parasitosis y uso de letrinas y hacinamiento. Se detectaron cinco casos de desnutrición grado I (4.4%. Se pone de manifiesto la trascendencia de los factores físicos y culturales como condicionantes de las parasitosis entéricas lo que sugiere que se debe insistir, simultáneamente al tratamiento farmacológico, en las medidas preventivas relacionadas con la higiene y la adecuada eliminación de las excretas humanas y de los animales domésticos.The aim of the present investigation was to evaluate the importance of enteroparasitosis in a young urban population. The relationship between enteroparasitosis in this population and biological and environmental conditions was established for 113 infants between 0 and 14 years. Serial stool samples were analyzed and Graham tests were performed in each infant. The degree of nutrition of each infant was also assessed. Environmental data were collected via semi-structured surveys. Soil samples were tested to determine the degree of soil contamination. The following species were identified: Blastocystis hominis, Enterobius vermicularis, coccidios, Giardia intestinalis, hookworms, Strongyloides stercoralis, Trichuris trichura, Ascaris lumbricoides, Entamoeba coli, Endolimax nana and Taenia sp. Children infection prevalence was 73.5%. The frequency of enteroparasitosis was largest in the population from 3 to 8 years. The homes of the children analyzed were brick houses with tin roof and access to tap water. A 79.5% of these houses had bathrooms. The remaining used outdoors latrines. In 95.5% of these houses, the residents lived with one or more dogs and cats. The soil collected from nine houses was contaminated with infectious forms of Toxocara canis and ancilostomideos. The relationship between parasitosis and latrines and overcrowding was verified. Five cases of malnutrition were detected (4.4%. The relevance of physical and cultural factors in relation to enteric parasitosis suggests that the pharmacological treatment should be accompanied with preventive measures regarding hygiene and proper elimination of human and pet faeces.

  7. The Political Imaginary and Technical Discourse in Administrative Reforms: The Argentine, Chile and Uruguay Case in the 1990s

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    Marcelo Moriconi Bezerra

    2012-01-01

    Full Text Available This article analyzes the political imaginaries in the official discourses about the public administration reforms in Argentina, Chile and Uruguay, during the nineties. The new management methods are based on technical concepts that do not signify by themselves. To acquire effective meaning, these concepts depend on systems of ideas about the significance of the State and democracy, settled in each particularcase. Concepts derived from the discourse analysis school, such as hegemony, nodal points or sedimentation, are useful to understand the strategies to construct the symbolic reality in each case. This reality will depend on the political imaginary which determines ‘what is possible to do’ and ‘what is tolerable’ in each particular society. The election of limited realities, focused only on formal nstitutions, has been constant in the analyzed discourses, which explains why the reforms were inefficient to remove common cultural practices such as clientelism.

  8. The Argentine species of the genus Megacyllene Casey, 1912 (Coleoptera: Cerambycidae), with description of a new species

    OpenAIRE

    Dilorio, Osvaldo R.

    2010-01-01

    Fifteen species of Megacyllene occur in Argentina: M. acuta (Germ.), M. bonplandi (Gounelle), M. castanea (Laporte & Gory), M. insignita (Perroud), M. falsa (Chevrolat), M. mellyi (Chevrolat), M. minuta (Chevrolat), M. multiguttata Burmeister (status nov.), . murina Purmeister), M. neblinosa new species, M. proxima (Laporte and Gory), M. spinifera (Newman), M. rotundicollis Zajciw, M. rufipes (Laporte and Gory) and M. unicolor Fuchs (=M. lateripilosa Zajciw new synonym). A Lectotype and Paral...

  9. An Investigation of Commercial Off-the-Shelf Wireless in Support of Complex Humanitarian Disaster Operations in the Argentine Army

    Science.gov (United States)

    2012-09-01

    Global Access Network ( BGAN ) ..................................36  2.  InmarSat BGAN HUGHES 9201 and 9202 Terminals ..................37  3.   InmarSat... BGAN HUGHES 9450 On-the-Move..............................38  4.   InmarSat BGAN Thrane & Thrane Explorer 700..........................39  D...48  a.  BGAN ......................................................................................48  b.  WiMAX

  10. Institutional transformations tending to attract external resources: characteristics and dynamics of the argentine external debt in the 90

    Directory of Open Access Journals (Sweden)

    Alejandro Gabriel Manzo

    2015-06-01

    Full Text Available During the nineties Argentina’s foreign debt grew at an accelerated and incompatible rate with the viability of the in force convertibility regime. Foreign exchange earnings, their financial appraisal and subsequent remittance abroad became, over the years, the main mechanism of expansion of big business settled in the country. This article examines how the institutional reforms pushed on at the beginning of the decade enabled / fostered the implementation of this financial circuit, synthetically accounting for its nature and functions. This study was performed taking as empirical reference the laws through which these reforms were instrumentalized and the statistical data from secondary analysis sources.

  11. Screening of Argentine plant extracts: impact on growth parameters and aflatoxin B1 accumulation by Aspergillus section Flavi.

    Science.gov (United States)

    Bluma, R; Amaiden, M R; Etcheverry, M

    2008-02-29

    The effect of essential oils, ethanolic and aqueous extract of 41 vegetable species on Aspergillus section Flavi growth was evaluated. The in vitro screen was a two-stage process. A wide-spectrum initial screen which identified promising antifungal plant extracts was carried out first. After that, identified extracts were studied in more detail by in vitro assays. A total of 96 plant extracts were screened. Essential oils were found to be the most effective extract controlling aflatoxigenic strains. Clove, mountain thyme, poleo and eucalyptus essential oils were selected to study their antifungal effect. Studies on percentage of germination, germ-tube elongation rate, growth rate, and aflatoxin B1 accumulation were carried out. Clove, mountain thyme and poleo essential oils showed the most antifungal effect under all growth parameters analyzed as well as aflatoxin B1 accumulation. Our results suggest that mountain thyme and poleo, which are native vegetal species of Argentina, and clove essential oils could be used alone or in conjunction with other substances to control the presence of aflatoxigenic fungi in stored maize.

  12. A three-step metal fractionation scheme for fly ashes collected in an Argentine thermal power plant

    Energy Technology Data Exchange (ETDEWEB)

    Patricia Smichowski; Griselda Polla; Dario Gomez; Antonio Jose Fernandez Espinosa; Ana Calleja Lopez [Comision Nacional de Energia Atomica, Buenos Aires (Argentina)

    2008-06-15

    A new three-step fractionation scheme was applied to study the distribution of Al, As, Cd, Cr, Cu, Fe, Mn, Mo, Ni, Pb, S, Sb, Ti, V and Zn in fly ashes collected in the electrostatic precipitator of a thermal power plant in the city of San Nicolas (Argentina). Seven samples were collected during one week of operation in 2005. For the fractionation, the scheme applied consisted of extracting the elements in three fractions: (i) soluble and exchangeable elements, (ii) carbonates, oxides and reducible elements and (iii) residual elements. Metals and metalloids at {mu}g g{sup -1} level were determined in each fraction by plasma based techniques namely, inductively coupled plasma optical emission spectrometry (ICP OES) and inductively coupled plasma mass spectrometry (ICP-MS). For validation, a certified reference materials NIST SRM 2711 (Montana soil) was subject to the same chemical sequential extraction procedure. X-ray diffraction powder (XRD) analysis and scanning electron microscopy (SEM) were used to characterize the major minerals present in the matrix. The predominant phases found in the total samples were mullite, quartz, iron oxides and lime. Total analyte concentration varied (in {mu}g g{sup -1}) from 1.54 for Cd to 30 600 for Al. The leachability of the 15 elements under study proved to be different. All the elements (except Cd and Pb) were detected in the soluble fraction in the order: Cu (0.10%) {approximately} Mn (0.13%) {lt} Ni (0.17%) {approximately} Ti (0.19%) {approximately} Fe (0.20%) {approximately} As (0.21%) {lt} Zn (0.86%) {lt} Al (1.3%) {lt} Cr (2.9%) {lt} V (3.9%) {lt} Sb (6.9%) {lt} Mo (45.1%) {lt} S (58.0%). Percentages higher than 20% of S (24.1%) {lt} V (27.5%) {lt} Mn (29.0%) were detected in the second fraction. Al, As, Cr, Cd, Cu, Fe, Ni, Pb, Sb and Zn were mostly associated to the residual fraction. Recoveries of the overall procedure varied between 106% (Mo) and 72% (Cr). 21 refs., 5 figs., 7 tabs.

  13. Using terrestrial laser scanning for differential measurement of interannual rock glacier movement in the Argentine Dry Andes

    Science.gov (United States)

    Kane, Renato R.

    Argentina has recently implemented laws to protect glaciers and buried ice in the Andes to improve the sustainability of scarce, long-term water resources. Therefore, all glaciers and buried ice terrains must be located and avoided in any commercial alterations of the landscape. Buried ice in this remote and often dangerous terrain typically is located via the use of remote-sensing techniques. This thesis applies one such technique, Light Detection and Ranging (LiDAR) in the form of Terrestrial Laser Scanning (TLS), to detect rock glacier movement that is indicative of flowing, buried ice not visible in near surface excavations. TLS surveys were completed at two locales, Los Azules and El Altar, in both AD 2013 and AD 2014 on landscapes where buried ice is suspected to have produced the current surface forms. Multiple TLS scans were co-registered with the use of benchmarks, both between scans and between years, which introduced quantifiable positional errors. Digital Elevation Models (DEMs) were derived from the point cloud data by standardizing the spacing of the points in the horizontal direction, creating 0.1 m by 0.1 m cells with elevation as the cell value. The DEMs for each year were subtracted from each other to yield a change in elevation. The surface roughness of the rock glaciers (vertical variability within each cell) was empirically determined and evaluated as a threshold for results. Both sites showed sub-decimeter interannual movements, and the direction of their movement is typical of forms with buried ice. The results of the study were validated using independent GPS data showing annual movement rates. Despite the downslope movement of these rock glaciers, the volume of ice contained within them remains unclear, and further study is required to assess the volume of water contained.

  14. Effect of Continuous Agriculture of Grassland Soils of the Argentine Rolling Pampa on Soil Organic Carbon and Nitrogen

    Directory of Open Access Journals (Sweden)

    Luis A. Milesi Delaye

    2013-01-01

    Full Text Available Long-term soil organic carbon (SOC and soil organic nitrogen (SON following cultivation of grassland soils (100/120-year tillage (T + 20/30-year no tillage (NT of the Rolling Pampa were studied calibrating the simple AMG model coupled with the natural 13C abundance measurements issued from long-term experiments and validating it on a data set obtained by a farmer survey and by long-term NT experiments. The multisite survey and NT trials permitted coverage of the history of the 140 years with agriculture. The decrease in SOC and SON storage that occurred during the first twenty years by a loss through biological activity was 27% for SOC and 32% for SON. The calibrated model described the SOC storage evolution very well and permitted an accurate simultaneous estimation of their three parameters. The validated model simulated well SOC and SON evolution. Overall, the results analyzed separately for the T and NT period indicated that the active pool has a rapid turnover (MRT ~9 and 13 years, resp. which represents 50% of SOC in the native prairie soil and 20% of SOC at equilibrium after NT period. NT implementation on soils with the highest soil organic matter reserves will continue to decrease (17% for three decades later under current annual addition.

  15. Three Members of the Bemisia tabaci (Hemiptera: Aleyrodidae) Cryptic Species Complex Occur Sympatrically in Argentine Horticultural Crops.

    Science.gov (United States)

    Alemandri, V; Vaghi Medina, C G; Dumón, A D; Argüello Caro, E B; Mattio, M F; García Medina, S; López Lambertini, P M; Truol, G

    2015-04-01

    The whitefly, Bemisia tabaci (Gennadius), is a cryptic species complex that attacks >600 different species of plants and transmits several plant viruses causing severe economic losses. Until 2010, the B. tabaci complex comprised 24 distinct putative species. Recently, at least 15 new species have been reported. The objective of this study was to identify B. tabaci species present in bean, melon, and tomato crops in Argentina by applying phylogenetic analyses and pairwise comparison of genetic distances of mitochondrial cytochrome c oxidase subunit I (mtCOI) sequences. The 39 proposed whitefly species were identified with both analyses, and the presence in Argentina of one indigenous species, New World 2 (NW2), and two introduced species, Middle East-Asia Minor one (MEAM1) and Mediterranean, was confirmed. Common bean crop presented the three whitefly species detected, with NW2, MEAM1, and Mediterranean being present all together under field conditions. Also, Mediterranean was the only species identified in tomato, whereas MEAM1 was found in melon. To the best of our knowledge, Mediterranean is a recent invasive species in open-field agriculture in the American continent and in greenhouse tomato in Argentina. Additionally, we provide the first report of MEAM1 in common bean and melon. These findings raise several questions on the future scenario of B. tabaci and the viruses it transmits in Argentina.

  16. Linking Childhood Poverty and Cognition: Environmental Mediators of Non-Verbal Executive Control in an Argentine Sample

    Science.gov (United States)

    Lipina, Sebastián; Segretin, Soledad; Hermida, Julia; Prats, Lucía; Fracchia, Carolina; Camelo, Jorge López; Colombo, Jorge

    2013-01-01

    Tests of attentional control, working memory, and planning were administered to compare the non-verbal executive control performance of healthy children from different socioeconomic backgrounds. In addition, mediations of several sociodemographic variables, identified in the literature as part of the experience of child poverty, between…

  17. Evaluation of dose due to the liberation of the radioactive content present in systems of final disposal of radioactive residues; Evaluacion de la dosis debida a la liberacion del contenido radiactivo presente en sistemas de disposicion final de residuos radiactivos

    Energy Technology Data Exchange (ETDEWEB)

    Amado, V.; Lopez, F. [Autoridad Regulatoria Nuclear, Av. Del Libertador 8250, Ciudad Autonoma de Buenos Aires (C1429BNP) (Argentina)]. e-mail: vamado@cae.arn.gov.ar

    2006-07-01

    The disposal systems of radioactive residuals well-known as repositories near to the surface, are used to dispose residuals that can contain high concentrations of radionuclides of period of short semi disintegration, which they would decay at levels radiologically insignificant in some few decades or in some centuries: and acceptably low concentrations of radionuclides of period of long semi disintegration. The dose that would receive the critic group due to these systems it could be increased by cause of discreet events that affect the foreseen retard time, or by the gradual degradation of the barriers. To this last case it contributes the presence of water, because it implies leaching and dissolution that can give place to radionuclide concentrations in the underground water greater to the prospective ones. The dosimetric evaluation is important because it offers useful objective information to decide if a given repository is adjusted to the purposes of its design and it fulfills the regulatory requirements. In this work a simplified evaluation of the dose that would receive the critic group due to the liberation of contained radionuclides in a hypothetical system of final disposition of radioactive residuals is presented. For it, they are considered representative values of the usually contained activities in this type of systems and they are carried out some approaches of the source term. The study is developed in two stages. In the first one, by means of the Radionuclide pollutant scattering pattern in phreatic aquifers (DRAF) it is considered the scattering of the pollutants in the phreatic aquifer, until the discharge point in the course of the nearest surface water. This model, developed originally in the regulatory branch of the National Commission of Argentine Atomic Energy (CNEA); it solves the transport equation of solutes in porous means in three dimensions, by the finite differences method having in account the soil retention and the radioactive

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

    Directory of Open Access Journals (Sweden)

    César Ceriani Cernadas

    2011-01-01

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

  19. La creación de los consumidores en la última dictadura argentina The creation of consumers in the last Argentine dictatorship

    Directory of Open Access Journals (Sweden)

    Daniel Fridman

    2008-11-01

    Full Text Available El artículo examina el discurso neoliberal de las autoridades económicas y la política hacia los consumidores durante la última dictadura argentina. Aun cuando economistas liberales y militares tenían importantes diferencias, la preocupación común por combatir lo que consideraban distorsiones en la política y economía y procurar un orden duradero sirvió para traducir sus diferencias. La política hacia los consumidores buscó construir el homo economicus y hacer que las conductas económicas de los argentinos se parecieran más a la teoría monetarista. El artículo finaliza con una evaluación de los posibles efectos del proceso analizado.The article analyzes the economic authorities, neoliberal discourse and consumer policy during the last military dictatorship in Argentina. Although neoliberal economists and the military differed in several aspects, the common concern for correcting what they saw as distortions in politics and the economy and establishing a durable order helped translating their differences. Consumer policies attempted to construct the homo economicus and make economic behavior more similar to monetarist theory. The article ends with an assessment of the possible effects of the process.

  20. The First Congress on History of Archaeology in Latin América (México, 1984: between an Argentine tango and a Mexican corrido

    Directory of Open Access Journals (Sweden)

    Daniel Schávelzon

    2007-05-01

    Full Text Available A 'tango' is a type of traditional music that tells the story of a distressing and impossible love. Without a broken heart, a repentant 'macho', and without the narration of an unsuccessful love story, there is no real 'tango'. A second usage of the word tango means an inadequate lie, that is, a lie about of some misfortune which is really an excuse for something else. The 'corrido', the contrary of 'tango', implies a violent altercation involving alcohol, with little opportunity for repentance or for the mourning of love, because when love is real, it is a matter of killing or dying. 'Corrido' can also mean “to be thrown out, to be sent away”. The following account includes abundant questions that have remained unanswered because there were no answers in sight. It is a story with no bad or good guys because no one knows whom, or where they were, a story where no one is guilty of anything, where everything dissolves, despite the remaining facts. Where, in the traditional Latin American way (so difficult for the Anglo-Saxon mentality to understand these issues are resolved by “what is your problem, my friend, if nothing has really happened here…!” This is a good story about a congress of archaeology that took place twenty years ago in Mexico, that was rich in 'tangos' and 'corridos' in their both respective senses.

  1. Impact of community-based vector control on house infestation and Trypanosoma cruzi infection in Triatoma infestans, dogs and cats in the Argentine Chaco.

    Science.gov (United States)

    Cardinal, M V; Lauricella, M A; Marcet, P L; Orozco, M M; Kitron, U; Gürtler, R E

    2007-09-01

    The relative impact of two community-based vector control strategies on house infestation by Triatoma infestans and Trypanosoma cruzi infection in bugs, domestic dogs and cats was assessed in two neighboring rural areas comprising 40 small villages and 323 houses in one of the regions most endemic for Chagas disease in northern Argentina. The prevalence and abundance of domestic infestation were 1.5- and 6.5-fold higher, respectively, in the area under pulsed, non-supervised control actions operating under the guidelines of the National Vector Control Program (NCVP) than in the area under sustained, supervised surveillance carried out jointly by the UBA research team and NCVP. The prevalence of infestation and infection varied widely among village groups within each area. In the pulsed control area, the prevalence of infection in bugs, dogs and cats was two- to three-fold higher than in the area under sustained surveillance, most of the infected animals qualified as autochthonous cases, and evidence of recent transmission was observed. Infection was highly aggregated at the household level and fell close to the 80/20 rule. Using multiple logistic regression analysis clustered by household, infection in dogs was associated positively and significantly with variables reflecting local exposure to infected T. infestans, thus demonstrating weak performance of the vector surveillance system. For high-risk areas in the Gran Chaco region, interruption of vector-mediated domestic transmission of T. cruzi requires residual insecticide spraying that is more intense, of a higher quality and sustained in time, combined with community participation and environmental management measures.

  2. Hydrogeology aspects of the Tandilia piedmont region (Buenos Aires, Argentine); Aspectos hidrogeologicos de la region periserrana de Tandilia (Buenos Aires, Argentina)

    Energy Technology Data Exchange (ETDEWEB)

    Silva Busso, A. A.; Amato, S. D.

    2011-07-01

    The Sierras de Tandilia piedmont area is a region trending NW-SE from the Atlantic Ocean to the China Hills (Olavarria) in the southeast of the province of Buenos Aires. Despite the intense demand for groundwater in the area, more so than in almost any other part of Argentina, knowledge about the aquifers is very scarce or highly localized. In a large part of the region little or nothing is known about the aquifer units, which might afford very important comparative benefits in terms of potential water exploitation rates. The aim of this study has been to analyse the main features of these aquifers, bearing in mind their different sedimentary architectures (depositional characteristics of the region), to define the basic hydrogeologic models. We also include a brief analysis of the hydraulic characteristics determined in these aquifers with reference to their architectural types. We have identified various types of aquifer: leaky, unconfined, semi-unconfined, and fractured, and obtained very diverse transmissivity values, from 30 m2/d with specific flow capacities of 1 m3/hm, to 500 m2/d with specific flow capacities of 20 m3/hm or more. We propose that these variations in the hydraulic characteristics of the aquifers conditioned to a great extent by the hydro stratigraphy and, especially, the types of sedimentary architecture that go to framing the hydrogeologic models in this region. (Author) 37 refs.

  3. Analysis for making a regulatory decision to equipment of industrial gammagraphy in Argentin; Analisis para la toma de decision regulatoria sobre equipos de gammagrafia industrial en Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Ermacora, Marcela G.; Vidal, Dora N.; Alonso, Maria T., E-mail: mermacora@arn.gob.ar, E-mail: dvidal@arn.gob.ar, E-mail: malonso@arn.gob.ar [Autoridad Regulatoria Nuclear (ARN), Buenos Aires (Argentina)

    2013-10-01

    Industrial gammagraphy is a practice widely used as a nondestructive testing technique in Argentina. Experience worldwide has shown the need for an improvement in the intrinsic safety of the equipment used in this lab. In response to this reason, the board of the Nuclear Regulatory Authority (ARN) has considered a proposal to withdraw service movement and much of the equipment inventory scan belonging to industrial facilities nationwide. The main objective of this paper is to present the results of the analysis performed to support the above proposal. The main elements of evaluation can be summarized as follows: I) the teams that do not conform to international recommendations regarding compliance with key safety requirements of international standards such as ISO 3999:2004 (E) {sup R}adiation protection - Industrial Apparatus for gamma radiography - Specifications for performance, design and tests {sup ;} II) the decision by some manufacturers to discontinue production of certain models of equipment and the provision of spare parts, and III) the validity of certificates bulk type B (U) for transport. In conclusion, it highlights the importance of a regulatory decision supplementary to the Standard AR 7.9.1 concerning the operation of scan equipment industry, based on current international recommendations and Argentina's commitment to good practice and safety culture which can lead to a positive impact on radiation safety in this art.

  4. Jessica Stites Mor, Transition Cinema. Political Filmmaking and the Argentine Left since 1968, Pittsburgh, University of Pittsburg Press, 2011, 264 p.

    OpenAIRE

    2013-01-01

    Una mirada alejada puede ofrecer claridad sobre aspectos que aparecen difusos desde la cercanía. Una percepción extranjera también, tras superar el riesgo de la incomprensión, puede ser capaz de desnaturalizar aquello que desde dentro de una cultura es imperceptible. Docente en la universidad de British Columbia, Jessica Stites Mor reelaboró su tesis de doctorado en una obra que brinda una lectura amena, bien fundada y enriquecida para un público amplio -incluso poco familiarizado con la hist...

  5. The First Congress on History of Archaeology in Latin América (México, 1984): between an Argentine tango and a Mexican corrido

    OpenAIRE

    Daniel Schávelzon

    2007-01-01

    A 'tango' is a type of traditional music that tells the story of a distressing and impossible love. Without a broken heart, a repentant 'macho', and without the narration of an unsuccessful love story, there is no real 'tango'. A second usage of the word tango means an inadequate lie, that is, a lie about of some misfortune which is really an excuse for something else. The 'corrido', the contrary of 'tan...

  6. El trabajo en la industria de la indumentaria: una aproximación a partir del caso argentino Labour in clothing industry: a rapprochement to the Argentine case

    Directory of Open Access Journals (Sweden)

    Paula D. Salgado

    2012-06-01

    Full Text Available La industria de la indumentaria ha mostrado un comportamiento errático en las últimas décadas, caracterizado por una fuerte retracción a partir de los noventa y un acelerado crecimiento que acompañó la reactivación económica posterior a la crisis de 2001. Estas tendencias implicaron cambios radicales tanto en el proceso productivo, como en las condiciones laborales. En el presente artículo se analizan los factores que incidieron en las fluctuaciones que mostró la industria de la confección y las principales consecuencias que tuvieron para las trabajadoras y trabajadores del sector. Fundamentalmente el crecimiento del empleo extremadamente precarizado de inmigrantes no registrados-as reclutados a través de redes de trata de personas. Asimismo, se reseña la intervención institucional -tanto sindical como gubernamental- analizando sus potencialidades y limitaciones para la erradicación de esta forma de explotación del trabajo.Clothing industry has shown erratic behavior in recent decades, characterized by a sharp reduction from the nineties and a subsequent intensive growth that followed the economic recovery after the 2001 Economic Crisis. These trends imply radical changes both in the production process and in the working conditions. In this paper we analyze the factors that affect the fluctuations in garment industry and the main results for workers of the sector. Fundamentally, the growth of the extremely precarious employment of unregistered immigrants, recruited through networks of human trafficking. It also outlines the institutional intervention -of both union and government- analyzing their strengths and limitations for the eradication of this form of labor exploitation.

  7. Diagnóstico de pica durante el embarazo y deficiencia de micronutrientes en mujeres argentinas Pica diagnosis during pregnancy and micronutrient dificiency in Argentine women

    Directory of Open Access Journals (Sweden)

    M. S. Poy

    2012-06-01

    Full Text Available Objetivo: Evaluar mediante indicadores bioquímicos el estado nutricional del hierro y el zinc en mujeres con y sin diagnóstico de pica durante el embarazo. Metodología: Se seleccionaron 109 puérperas del Hospital Fiorito, Argentina. El diagnostico de pica se realizó en 42 de ellas, en tanto que 67 mujeres no refirieron el hábito. Mediante un contador hematológico se determinaron los valores de hemoglobina, volumen corpuscular medio, hemoglobina corpuscular media, concentración de hemoglobina corpuscular media y hematocrito. Los niveles de zinc en plasma y en eritrocito se determinaron mediante espectrofotometría de absorción atómica. Resultados: Las sustancias consumidas durante la práctica de pica fueron: hielo, tierra, papel, ladrillo, desinfectante y alimento para perros. Las mujeres con diagnóstico de pica tuvieron prevalencias más elevadas de antecedentes familiares de pica y antecedentes personales de pica en la infancia (OR: 15,9. Las características sociodemográficas, antropométricas y el peso del neonato fueron similares en ambos grupos, no obstante las mujeres con diagnóstico de pica tuvieron valores más bajos en el volumen corpuscular medio (p = 0,008 la hemoglobina corpuscular media (p = 0,009 y el zinc en eritrocito (p = 0,008. Aplicando un modelo de regresión logística, el zinc eritrocitario continuó asociado al diagnóstico de pica (p = 0,028. Conclusiones: Durante el puerperio, las mujeres que presentaron pica durante el embarazo pueden tener indicadores bioquímicos más bajos del estado nutricional del hierro y el zinc, por lo se sugiere que el diagnóstico temprano de pica puede ayudar a identificar deficiencias de micronutrientes.Objective: To evaluate by biochemical parameters iron and zinc nutritional status in women with and without pica diagnosis during pregnancy. Metodology: During puerperium 109 women were evaluated at Fiorito Hospital, Argentina. Pica diagnosis was made in 42 women while 67 did not refer the practice. Fasting blood samples were obtained and analyzed in a hematology analyzer for values of red blood cells, hemoglobin, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration, and hematocrit. Serum zinc and erythrocyte zinc was analyzed by atomic absorption spectrophotometry. Results: Substances consumed during pica practice were: earth, ice, brick, paper, desinfectant and dog food. Women with pica diagnosis had higher a rate of family history of pica and personal antecedents of pica in childhood (OR: 15.9. Sociodemographic and anthropometric characteristics and neonatal birth weight were similar between both groups, although women with pica diagnosis had lower values in mean corpuscular volume (p = 0,008, mean corpuscular hemoglobin (p = 0,009 and erythrocyte zinc (0,008. Applying a logistic regression model, erythrocyte zinc was the only biochemical indicator associated with pica practice (p = 0,028. Conclusiones: At puerperium, women with pica during pregnancy could have lower levels in biochemical parameters for iron and zinc status so we suggest that early diagnosis of pica could help to identify micronutrient deficient.

  8. [Cultural adaptation and Argentine validation of the Northwick Park Neck Pain Questionnaire in the hospitals of the Autonomous City of Buenos Aires].

    Science.gov (United States)

    Aguirre, Mariana V; Rodríguez, Matias G; Clarett, Martín; Iribarne, Juan I; Martínez, Marianela; Battistotti, Romina; López de Arcaute, Ana S; Adarves, Romina; Orsini, Esteban

    2013-01-01

    Objetivo: realizar la adaptación cultural y validación del Cuestionario Northwick Park (NPQ) en Argentina, determinando sus propiedades psicométricas, en pacientes con dolor cervical de origen mecánico derivados al Servicio de Kinesiología del Hospital D. F. Santojanni. Materiales y Métodos: Se solicitó la autorización del autor original del NPQ, luego se realizó la adaptación lingüística y prueba piloto. Las propiedades psicométricas incluyeron: confiabilidad test-retest (coeficiente de correlación intraclase, CCI), validez (coeficiente de correlación de Pearson NPQ-Escala Análoga Visual, EVA), consistencia interna (alfa de Cronbach) y sensibilidad al cambio (prueba T para pruebas pareadas NPQ-EVA). Se incluyeron consecutivamente 60 pacientes de septiembre de 2007 a febrero de 2009 con dolor cervical mecánico. Se midieron las variables porcentaje de discapacidad (NPQ) y dolor (EVA) al día del ingreso, a las 24 horas y al alta. Resultados: Veintiséis pacientes completaron el estudio, 4 fueron eliminados y 30 no completaron la 3° medición. Se obtuvo una buena confiabilidad test-retest (ICC 0.8979) y una alta consistencia interna (alfa de Cronbach 0.86). La validez mostró una buena correlación (r= 0,678). La sensibilidad al cambio fue buena (r=0.661). Conclusión: El NPQ es un instrumento válido, confiable y sensible para evaluar la discapacidad asociada al dolor cervical de origen mecánico en pacientes atendidos en el ámbito hospitalario de la Ciudad Autónoma de Buenos Aires.

  9. Unusual Naturally Occurring Humoral and Cellular Mutated Epitopes of Hepatitis B Virus in a Chronically Infected Argentine Patient with Anti-HBs Antibodies

    Science.gov (United States)

    Cuestas, María L.; Mathet, Verónica L.; Ruiz, Vanesa; Minassian, María L.; Rivero, Cintia; Sala, Andrea; Corach, Daniel; Alessio, Analía; Pozzati, Marcia; Frider, Bernardo; Oubiña, José R.

    2006-01-01

    Serum hepatitis B virus (HBV) DNA was extracted from a chronically infected patient with cocirculation of hepatitis B surface antigen (HBsAg) and anti-HBs antibodies. Direct PCR and clone-derived sequences of the S and overlapped P genes were obtained. DNA sequences and phylogenetic analysis ascribed this isolate to genotype A (serotype adw2). Five of six HBV DNA clones exhibited point mutations inside and outside the major hydrophilic region, while the sixth clone exhibited a genotype A “wild-type” amino acid sequence. Observed replacements included both humoral and/or cellular (major histocompatibility complex class I [MHC-I] and MHC-II) HBV mutated epitopes, such as S45A, P46H, L49H, C107R, T125A, M133K, I152F, P153T, T161S, G185E, A194T, G202R, and I213L. None of these mutants were individually present within a given clone. The I213L replacement was the only one observed in the five clones carrying nonsynonymous mutations in the S gene. Some of the amino acid substitutions are reportedly known to be responsible for the emergence of immune escape mutants. C107R replacement prevents disulfide bonding, thus disrupting the first loop of the HBsAg. Circulation of some of these mutants may represent a potential risk for the community, since neither current hepatitis B vaccines nor hyperimmune hepatitis B immune globulin are effectively prevent the liver disease thereto associated. Moreover, some of the recorded HBsAg variants may influence the accuracy of the results obtained with currently used diagnostic tests. PMID:16757620

  10. What the Iberian Conquest Bequeathed to Us: The Fruit Trees Introduced in Argentine Subtropic—Their History and Importance in Present Traditional Medicine

    Directory of Open Access Journals (Sweden)

    Pablo C. Stampella

    2013-01-01

    Full Text Available This contribution presents information about the history of introduction, establishment, and local appropriation of Eurasian fruit trees—species and varieties of the genera Prunus and Citrus—from 15th century in two rural areas of Northern Argentina. By means of an ethnobotanical and ethnohistorical approach, our study was aimed at analysing how this process influenced local medicine and the design of cultural landscape that they are still part of. As a first step, local diversity, knowledge, and management practices of these fruit tree species were surveyed. In a second moment, medicinal properties attributed to them were documented. A historical literature was consulted referring to different aspects on introduction of peaches and citric species into America and their uses in the past. The appropriation of these fruit-trees gave place to new applications and a particular status for introduced species that are seen as identitary and contribute to the definition of the communities and daily life landscapes. Besides, these plants, introduced in a relatively short period and with written record, allow the researcher to understand and to design landscape domestication, as a multidimensional result of physical, social, and symbolic environment.

  11. The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections

    CERN Document Server

    Kalberla, P M W; Hartmann, D; Arnal, E M; Bajaja, E; Morras, R; Poppel, W G L; Hartmann, Dap

    2005-01-01

    We present the final data release of observations of lambda 21-cm emission from Galactic neutral hydrogen over the entire sky, merging the Leiden/Dwingeloo Survey (LDS: Hartmann & Burton, 1997) of the sky north of delta = -30 deg with the Instituto Argentino de Radioastronomia Survey (IAR: Arnal et al., 2000, and Bajaja et al., 2005) of the sky south of delta = -25 deg. The angular resolution of the combined material is HPBW ~ 0.6 deg. The LSR velocity coverage spans the interval -450 km/s to +400 km/s, at a resolution of 1.3 km/s. The data were corrected for stray radiation at the Institute for Radioastronomy of the University of Bonn, refining the original correction applied to the LDS. The rms brightness-temperature noise of the merged database is 0.07 - 0.09 K. Residual errors in the profile wings due to defects in the correction for stray radiation are for most of the data below a level of 20 - 40 mK. It would be necessary to construct a telescope with a main beam efficiency of eta_{MB} > 99% to achi...

  12. Les variations récentes (1975-2000 de l’englacement dans le Massif de l’Aconcagua (Mendoza, Argentine

    Directory of Open Access Journals (Sweden)

    Julie Le Gall

    2008-03-01

    Full Text Available La région de Mendoza est particulièrement vulnérable au réchauffement climatique. Les glaciers du massif de l’Aconcagua ont amorcé un important retrait depuis la fin du Petit Âge de Glace. Or la disparition de ces glaciers risque d’entraîner une modification des régimes hydrologiques qui, jusqu’à présent, se caractérisaient par de hautes eaux estivales. Ce pic estival pourrait à l’avenir être atténué et remettre en cause les stratégies de gestion de la ressource en eau. Nous faisons ici le point sur les variations récentes de l’englacement et tentons de dessiner un scénario prospectif.Mendoza area is highly vulnerable to the global warming. The glaciers of the Aconcagua massif are currently shrinking, this trend of retreat began at the end of the Little Ice Age. The disappearance of glaciers may modify hydrological regimes. The discharge is currently at maximum during summer (related to glacier melt, but the peak discharge may occur during spring (related to snow melt in the next future. In this paper we synthesize the recent variations of the glaciers and propose a pattern of future variations.

  13. Timing of uplift in the Argentine Frontal Cordillera (34-32.5°S), through (U-Th)/He Thermochronology

    Science.gov (United States)

    Graber, N. R.; Hoke, G. D.; Metcalf, J. R.

    2010-12-01

    We use the apatite (U-Th)/He low temperature thermochronometer to study the rock uplift history in the Frontal Cordillera of Argentina between 32.5-34°S, where an abrupt transition in the subduction angle of the Nazca Plate occurs. The Andes in our study area are composed of three major physiographic and tectonic provinces, which have been uplifted as the deformation front stepped eastward over the last 20 Ma. From west to east they are the Principal Cordillera, Frontal Cordillera and Precordillera. The thin-skinned Aconcagua fold-thrust-belt, which today comprises the Principal Cordillera was active between ~20-8 Ma. The thick-skinned Frontal Cordillera began uplifting around 9 Ma. Finally, in the northern part of the study area, uplift and deformation of the Precordillera commenced between 5-2 Ma. South of 33°S, in the absence of the Precordillera, the total amount of crustal shortening is half that of the north, despite similar average and peak range elevations. Remnants of a regionally extensive paleolandscape are preserved in both areas. Two age-elevation profiles were collected from the granitic Permo-Triassic Choiyoi Group in the headwaters of the Rio Tunuyán (south of 33°S) and Rio Mendoza (north of 33°S). In the Tunyán area, 7 samples were collected between 2600 and 4500 m, with paleolandscape remnants at an elevation of ~5000 m. Total local relief in the Río Mendoza sampling area is 2800 m, from which the lower 1400 m were sampled between elevations of 2100 and 3500 m. We aim to constrain 1) the timing of the initiation of deformation-related exhumation of the proximal foredeep associated with the Aconcagua fold and thrust belt and 2) the rate of rock uplift induced river incision of the Rio Mendoza and Rio Tunyán as a proxy for surface uplift.

  14. General Onganía and the Argentine [Military] Revolution of the Right: Anti-Communism and Morality, 1966-1970

    Directory of Open Access Journals (Sweden)

    Cyrus Stephen Cousins

    2009-12-01

    Full Text Available Este trabajo analiza la relación entre la retórica de la quinta dictadura militar argentina sobre la juventud, la moralidad y el comunismo, y la campaña cultural realizada por el gobierno de 1966 a 1973. Durante la “Revolución Argentina”, el general Juan Carlos Onganía y su gabinete se centraron en la “inmoralidad” de la juventud a causa de que ellos creían que la amenaza interna del comunismo había degradado los valores católicos tradicionales del país. Por el hecho de construir una cultura moral y espiritual a través de una cruzada contra la inmoralidad, la intervención en las universidades nacionales, la censura y legislación anticomunista, los oficiales conservadores pensaban que ellos podían proteger a la juventud argentina de la infiltración de ideologías izquierdistas y preservar a los futuros líderes de la nación._____________________ABSTRACT:This project analyzes the relationship between the rhetoric of Argentina’s fifth military dictatorship on youth, morality, and communism, and the government’s cultural campaigns executed from 1966-1973. During “La Revolución Argentina,” General Juan Carlos Onganía and his cabinet targeted the “immorality” of the youth because they believed the internal threat of communism had degraded the country’s traditional Catholic values. By constructing a moral and spiritual culture through a crusade against immorality, intervention in the national universities, censorship and anti-communist legislation, conservative officers thought they could shield Argentina’s youth from further infiltration of leftist ideologies and preserve the nation’s future leaders.

  15. La producción familiar en la globalización agroalimentaria: La diferenciación social en la citricultura del noreste argentine

    Directory of Open Access Journals (Sweden)

    Clara Craviotti

    2010-10-01

    Full Text Available En este artículo se retoma el debate sobre la vigencia y condiciones de reproducción de las formas de producción familiar en el contexto de la globalización agroalimentaria, situándolo en un contexto regional donde ésta se ha afirmado como actor relevante: la producción de cítricos de la provincia de Entre Ríos en el noreste argentino. Se examinan algunas de las dimensiones constitutivas de su identidad, en buena medida delineada a partir de las fronteras e interacciones establecidas con otros grupos sociales. Se analizan sus actuales prácticas productivas, que se desarrollan en el marco de una diferente inserción en los mercados de la actividad citrícola y de las presiones que supone la adopción de tecnologías orientadas a garantizar la sanidad y calidad agroalimentaria requeridas por los mercados internacionales. No obstante, también se pudieron identificar estrategias basadas en la conformación de redes sociales ampliadas que implican la integración de actividades poscosecha para la canalización de la producción en el mercado interno y otras que suponen el repliegue sobre sí misma de la producción familiar, procurando potenciar los recursos internos a la unidad. Sin embargo, el análisis de las trayectorias que estos productores han experimentado en los últimos años da cuenta de los procesos de diferenciación que están operando sobre el sector, existiendo indicios de que éstos pueden profundizarse en el futuro. Tales dinámicas ponen en tensión a la producción familiar, generando una peculiar dialéctica entre permanencia y cambio de su identidad como sujeto social.   Abstract: Family production and agri-food globalization: Social differentiation in the citrus production of northeastern Argentina This article takes up the debate on the conditions of reproduction of family farming in the context of agri-food globalization, placing it in a regional context where it has established as a major actor: citrus production carried out in the province of Entre Rios in Northeastern Argentina. It examines some of the constitutive dimensions of its identity, largely delineated from establishing boundaries and interactions with other social groups. Current production practices are also analysed, which have developed in the context of the different markets to which citrus production is directed, and the pressures posed by the adoption of technologies aimed at ensuring food safety and the quality required by international markets. However, strategies based on the formation of extended social networks that involve the integration of post-harvest activities to channel output in the domestic market were also identified, as well as others that imply the reduction of household production expenses, thereby seeking to fortify its internal resources. Nonetheless, the analysis of the trajectories that these producers have experienced in recent years accounts for the processes of differentiation that are operating in the sector, which may deepen in the future. Such dynamics put pressure on family production, generating a peculiar dialectic between permanence and change of its identity as a social subject.

  16. Effect of amiodarone therapy on mortality in patients with left ventricular dysfunction and asymptomatic complex ventricular arrhythmias: Argentine Pilot Study of Sudden Death and Amiodarone (EPAMSA).

    Science.gov (United States)

    Garguichevich, J J; Ramos, J L; Gambarte, A; Gentile, A; Hauad, S; Scapin, O; Sirena, J; Tibaldi, M; Toplikar, J

    1995-09-01

    The efficiency of prophylactic antiarrhythmic treatment with amiodarone in reducing 1-year mortality in patients with reduced left ventricular ejection fraction ( < 35%) and asymptomatic ventricular arrhythmias (Lown classes 2 and 4) was investigated in a prospective, multicenter, randomized, controlled study. Among 127 patients who entered the study, 61 were assigned to no antiarrhythmic therapy (control group [CG] and 66 to amiodarone treatment (amiodarone group [AG]). Amiodarone was administered at a dosage of 800 mg/day for 2 weeks followed by 400 mg/day thereafter. A 12-month follow-up was completed for 106 patients (57 in the AG and 49 in the CG). Amiodarone reduced the overall mortality rate, which was 10.5% in the AG versus 28.6% in the CG (odds ratio [OR] 0.29; 95% confidence interval [CI] 0.10 to 0.84; log-rank test 0.02) and sudden death rate, which was 7.0% in the AG versus 20.4% in the CG (OR 0.29; 95% CI 0.08 to 1.00; log-rank test 0.04). Side effects were rare, and in only three patients did amiodarone treatment have to be discontinued.

  17. 阿根廷危机和新自由主义在拉美实践的启示%Argentine Crisis and Neoliberal Reforms

    Institute of Scientific and Technical Information of China (English)

    宋晓平

    2004-01-01

    一危机与反思 2001年年底阿根廷发生的危机是经历了一个长期的酝酿过程。1998年下半年,受东亚和俄罗斯金融危机的影响,阿根廷在国际金融市场的借贷条件显著恶化,筹资成本大幅度提高。这严重恶化了阿根廷经济本身存在的各种问题。因本币升值造成相对价格扭曲,国际竞争力显著下降;国

  18. What the Iberian Conquest Bequeathed to Us: The Fruit Trees Introduced in Argentine Subtropic—Their History and Importance in Present Traditional Medicine

    Science.gov (United States)

    Stampella, Pablo C.; Lambaré, Daniela Alejandra; Hilgert, Norma I.

    2013-01-01

    This contribution presents information about the history of introduction, establishment, and local appropriation of Eurasian fruit trees—species and varieties of the genera Prunus and Citrus—from 15th century in two rural areas of Northern Argentina. By means of an ethnobotanical and ethnohistorical approach, our study was aimed at analysing how this process influenced local medicine and the design of cultural landscape that they are still part of. As a first step, local diversity, knowledge, and management practices of these fruit tree species were surveyed. In a second moment, medicinal properties attributed to them were documented. A historical literature was consulted referring to different aspects on introduction of peaches and citric species into America and their uses in the past. The appropriation of these fruit-trees gave place to new applications and a particular status for introduced species that are seen as identitary and contribute to the definition of the communities and daily life landscapes. Besides, these plants, introduced in a relatively short period and with written record, allow the researcher to understand and to design landscape domestication, as a multidimensional result of physical, social, and symbolic environment. PMID:24348725

  19. The Argentine foreign policy towards the southeast of Asia between the presidential periods of Carlos Nemen and Nestor Kirchner from a constructive look

    Directory of Open Access Journals (Sweden)

    María Florencia Rubiolo

    2010-05-01

    Full Text Available The importance gained by Southeast Asian countries as emerging economies since the nineties has converted their markets in significant targets for Argentinean exports. Our aim in this paper is to identify the characteristics of the relation between Argentina and its main trade partners in Southeast Asia since 1989. In order to achieve this goal we will analyze the commercial and also the political dimensions. Our interest is to define if the trade relation was accompanied by an attempt of political rapprochement, and if the trade increase can be understood as a part of an Argentinean foreign policy towards diversification.

  20. Natural gas - the new Argentine regulation and the impact on the international relationships; Gas natural - nueva regulacion argentina y su impacto en las relaciones internacionales

    Energy Technology Data Exchange (ETDEWEB)

    Valle, Ximena [Escritorio Marval, O' Farrell and Mairal, Buenos Aires (Argentina). Dept. de Energia

    2005-07-15

    Under the mentioned regulations important enterprises have been developed such as natural gas exportation to three specific regions of Chile (the mining region of North; the central region supplying the Santiago and Concepcion markets; and the supplying of a methanol plant at the extreme south); the natural gas exportation to a power plant at southern Brazil (Uruguaiana), at Mato Grosso (through Bolivia) and the natural gas exportation to Uruguay.

  1. Scope and limitations of bioenergy systems (from resources of the Argentine north) in a framework of sustainability: study, proposals and assessment

    OpenAIRE

    Manrique, Silvina Magdalena

    2015-01-01

    La biomasa –conjunto de materiales de origen orgánico no fosilizado- puede ser utilizada como fuente de energía renovable, contribuyendo a la sustitución parcial de combustibles fósiles (con reservas mundiales limitadas) y a la disminución de gases contaminantes y de efecto invernadero (GEI) asociados al sobrecalentamiento global. En Argentina, 90% dependiente de fuentes fósiles, la bioenergía en particular podría jugar un rol significativo por lo que actualmente se está promoviendo su empleo...

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

    Directory of Open Access Journals (Sweden)

    Carolina Fernández

    2005-12-01

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

  3. Nuevo consenso argentino de rehabilitación respiratoria: Actualización 2008 New Argentine Consensus of Respiratory Rehabilitation 2008

    Directory of Open Access Journals (Sweden)

    Martín Sivori

    2008-08-01

    Full Text Available La rehabilitación respiratoria (RR es un tratamiento multidisciplinario para pacientes con enfermedad respiratoria crónica, adaptado individualmente y diseñado para optimizar la capacidad física, la actividad social y la autonomía de los mismos. Está especialmente indicado en pacientes con enfermedad pulmonar obstructiva crónica (EPOC. Los objetivos de la RR son: reducir los síntomas, mejorar la tolerancia al ejercicio físico y la calidad de vida. Un grupo de neumonólogos, nutricionistas y kinesiólogos realizó un análisis sistemàtico de la evidencia científica con el objetivo de actualizar las normativas anteriores de RR. Se definieron los criterios de inclusión y exclusión, la evaluación inicial y de seguimiento como así también los elementos y material necesarios. Las características del entrenamiento en cuanto a la frecuencia de las visitas, la intensidad, progresión y duración del ejercicio han sido revisadas. Se recomendó el entrenamiento de los miembros inferiores (1A, miembros superiores (1B, complementando el entrenamiento de fuerza (1B. El entrenamiento de músculos respiratorios, otras técnicas kinesiológicas y pautas nutricionales se recomiendan sólo para casos particulares (1C. Se fijan también objetivos educativos para los programas de rehabilitación que incluyen la cesación de fumar, aspectos nutricionales y apoyo psicológico. La RR ha demostrado reducir las exacerbaciones, hospitalizaciones y costos (Evidencia A, y mejoraría la sobrevida (Evidencia B. La RR es un componente fundamental en el tratamiento moderno de la EPOC. Estas pautas basadas en la más reciente evidencia científica, adaptadas al medio local tienen por objetivo que la RR pueda aplicarse en todo el país.Respiratory rehabilitation (RR is a multidisciplinary program of care for patients with chronic respiratory impairment, individually tailored, designed to optimize physical and social performance and patient autonomy. It is particularly indicated in chronic obstructive pulmonary disease (COPD patients with exercise intolerance. The objectives of respiratory rehabilitation are: reduction in symptoms and exercise intolerance, improvement of health-related quality of life, and reduction of health costs. A group of neumonologists, nutritionists and physical therapists performed a systematic review of the evidence in RR to update previous local guidelines. Inclusion and exclusion criteria, guidelines for initial evaluation and follow up and resources needed are defined. Training characteristics are recommended regarding frequency of the visits, intensity, progression and duration of the exercise training. Aerobic training was recommended for lower limb (1A, upper limb (1B. Strength training must be added (1B. Respiratory muscle training and other physiotherapy techniques were recommended only for specific patients (1C. In addition recommendations have been made for educational objectives of the program including smoking cessation, nutritional and psychological support. The positive impact of RR on reductions of health care costs and reductions on hospitalizations (Evidence A and mortality (Evidence B were analized. Respiratory rehabilitation is a key component in the modern treatment of COPD patients. This consensus statement was prepared based on the most recent scientific evidence and adjusted to the local environment with the aim of being implemented nationally.

  4. Diagnóstico de pica durante el embarazo y deficiencia de micronutrientes en mujeres argentinas Pica diagnosis during pregnancy and micronutrient dificiency in Argentine women

    OpenAIRE

    M. S. Poy; A. Weisstaub; Iglesias, C.; S. Fernández; M.ª L. Portela; L. B. López

    2012-01-01

    Objetivo: Evaluar mediante indicadores bioquímicos el estado nutricional del hierro y el zinc en mujeres con y sin diagnóstico de pica durante el embarazo. Metodología: Se seleccionaron 109 puérperas del Hospital Fiorito, Argentina. El diagnostico de pica se realizó en 42 de ellas, en tanto que 67 mujeres no refirieron el hábito. Mediante un contador hematológico se determinaron los valores de hemoglobina, volumen corpuscular medio, hemoglobina corpuscular media, concentración de hemoglobina ...

  5. Scientific presentations and their publication. Experience over a 10-year period in the Argentine Division of the I.A.D.R.

    Science.gov (United States)

    Collet, A M; Piloni, M J; Keszler, A

    1993-01-01

    At present the "Impact Factor" developed by the Scientific Information Institute (Philadelphia), is an indicator of the quality of the journals in terms of the quality of the papers which are published. The results of odontological research which are presented and discussed at the annual meetings of the DAAIIO are proof of the quality and quantity of scientific production in this area in Argentina. Presentations are undoubtedly numerous. However, their diffusion and qualitative evaluation are of utmost importance. One way to estimate these parameters would be to monitor the ratio between number of presentations and their publication as full papers in journals with a system of referees (Ratio Publ./Pres.). With this aim in mind the presentations at DAAIIO over the 1980-1989 period were considered. Employing the author index of the DAAIIO meetings, we searched for possible publications in the Index Dental and the Index Medicus. The references were compared with the results presented to disregard publications which had not been previously presented at DAAIIO meetings. The data obtained were grouped according to subject area and Research Center. A total of 747 presentations led to 94 publications, the Publ./Pres. Ratio being 1/8 (12.5%). The ratio for each research center was the following: Univ. Buenos Aires 1/7; Natl. Univ. La Plata 1/8; Natl. Univ. Córdoba 1/15. The research groups with the highest publication ratios were Dent. Mat., Natl. Univ. La Plata 1/3; Clinical Pathol., Univ. Bs. As. 1/4; Oral Pathol., Univ. Bs. As. 1/4; Physiol. and Pharmacol., Univ. Bs. As. 1/4; Natl. Univ. Córdoba 1/7. The majority of the publications within 2 years of presentation were in English (69%). These results suggest that an acceptable number of presentations are published, particularly in the area of basic research. We should hope for an increase in the publication/presentation ratio in the future, particularly in the area of applied clinical research since publication would imply technical-scientific quality evaluation of the work by the experts who condition publication.

  6. Application of 'BIPI' tests employing natural and artificial tracers in water flooded oil fields of the Neuquina Basin (Argentine)

    Energy Technology Data Exchange (ETDEWEB)

    Somaruga, C. [Comahue Univ., Engineering Dept., Neuquen (Argentina); Gazzera, C.; Wouterlood, C. [Petrolera Perez Companc SA. Area Entre Lomas., Neuquen (Argentina)

    2001-07-01

    A methodology to determine the origin and distribution of bottom water in an oil producing well influenced by several injectors in waterflooding projects is presented. This methodology is complementary of inter-well tracer tests and salinity records analysis and was denominated BIPI (brief interruptions of producing-injecting wells) test. It requires the closing of a well (injector or producer) during a short time and its later re-opening. The original flow pattern in the surroundings of the tested producing well is affected while the well is closed. So the water coming from a dominant injector can move forward invading areas of a layer that have been previously occupied by other waters. Once the well is re-opened, if there is a tracer concentration contrast between the waters, a concentration change is registered. The concentration change was measured and also its recurrence in waters produced during inter-well tracer tests and during waterflooding that are employing different injection water from the formation one. Also it was determined the original flow distribution in the surrounding of the producing well by means of a simple balance of tracer mass. It is presented and analyze here the results from tests that were performed in an oil field of the Neuquina Basin. They allowed to visualizing the current condition of the bottom water flow as well as to make predictions on future performance. (authors)

  7. In articulo mortis : le portrait photographie post-mortem et le début de la presse illustré à l'Argentine, 1898-1913

    OpenAIRE

    Guerra, Diego Fernando

    2016-01-01

    The subject of this thesis is the postmortem photographic portrait in Buenos Aires and, especially, its development in the context of the insertion of the photography in the early twentieth century massmedia. In this sense, the main objective of this work is to contribute to the knowledge of the relationship between death and visual representation in the beginning of the mass culture. The analysis of a heterogeneous corpus - the photographs, paintings, photo-engravings, cartoons, journalistic...

  8. Las revistas argentinas de filosofía: visibilidad en bases de datos internacionales Argentine journals of philosophy: visibility in international databases

    Directory of Open Access Journals (Sweden)

    Susana Romanos De Tiratel

    2005-12-01

    Full Text Available El artículo proporciona una breve introducción al escenario actual donde se desenvuelve la publicación periódica y su compleja problemática enfatizando en América Latina y enfocando el estudio en las revistas argentinas de Filosofía. Dentro del marco teórico provisto por Keresztesi respecto de las interrelaciones entre investigación y bibliografía, se aplican métodos cuantitativos para determinar los indicadores de representatividad, de visibilidad y de vacancia de las revistas argentinas de Filosofía. Las fórmulas resultantes se utilizan en bases de datos internacionales pluridisciplinarias, unidisciplinarias y de área. Finalmente, se discuten ciertos aspectos que se derivan del estudio realizado; se concluye que a menor cantidad de títulos publicados, mayor índice de visibilidad en bases de datos internacionales y, finalmente, se aportan datos comprobados para la toma de decisiones en unidades de información dedicadas a la Filosofía.The article introduces periodical publication and addresses the questions raised in connection with this format, focusing on Philosophy's journals in Argentina. Within Keresztesi's framework of reference as regards the research/ bibliography relationship, some quantitative methods to determine indicators of representativity, visibility and vacancy of Argentinean journals in Philosophy are applied. The research examines data available in both single-discipline and multidisciplinary international and Latin-American bases. Matters arising as a result of our study are discussed and our conclusion is that the fewer the titles, the greater the visibility in international databases. Finally, we provide checked data for decision making in Philosophy information units.

  9. 阿根廷钢琴家赢得30万美元吉尔默大奖%Argentine Pianist Wins Gilmore Prize

    Institute of Scientific and Technical Information of China (English)

    盛方

    2006-01-01

    女钢琴家英格丽德·弗里特尔(Ingrid Filter)曾经两度以其清新、机智、抒情的演奏获得华盛顿观众的赞赏。除此之外,她在美国其他地方可以说是不为人知。然而她却赢得了四年一度的吉尔默基金会艺术家大奖,包括30万美元奖金以及令人羡慕不已的大量演出机会。

  10. The agribusiness specialization of argentine business groups during the boom, crisis and exit of the convertibility regime. The cases of Bunge and Pérez Companc

    Directory of Open Access Journals (Sweden)

    Alejandro Gaggero

    2014-05-01

    Full Text Available The aim of this paper is to analyze the agribusiness specialization that pursued two of the most important business groups in Argentina during the nineties: Bunge and Pérez Companc. To fulfill this purpose the groups' strategies and performances are reconstructed. These show how their diversified structure was transformed in a specialized one. The paper identifies differences in the paths of both groups linked to the assessments made by their directors during the implementation of structural reforms

  11. CDM incidence in the economical feasibility of cogeneration in Argentine; Incidencia del MDL en la factibilidad economica de sistemas de cogeneracion industrial en Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Sosa, Maria Isabel; Fushimi, Alberto [Universidad Nacional de La Plata (UNLP), La Plata, BA (Argentina). Fac. de Ingenieria. Area Departamental Mecanica], e-mail: misosa@volta.ing.unlp.edu.ar, e-mail: afushimi@volta.ing.unlp.edu.ar

    2006-07-01

    In this paper, the contribution to the financial and economic feasibility of cogeneration systems with gas turbine and exhaust gas heat recovery boiler is discussed in function of the financial credit for reduction of greenhouse gases emissions (GH Gs) by using the Clean Development Mechanism (CDM). It has to be kept in mind the restrictions of these systems to be capital intensive projects subject to the effects of the economy of scale. Other factors to take into account are the constancy of the heat demand, the rates of sale of electricity and steam surpluses, the regulatory laws, the ignorance of the cogeneration technologies on the part of the investor, among others. The profitability of the investment for implementation of a cogeneration system can be elevated in large facilities with gas turbines and heat recovery boiler (T G + HRSG). Results discussed in previous papers are pointed out and new conclusions are enunciated. (author)

  12. [Aluminum content in individual components, used to prepare adult total parenteral nutrition mixtures in Argentine, and in comparison with international regulation].

    Science.gov (United States)

    Menéndez, A M; Farías, S S; Servant, R; Morisio, Y; Misischia, Y; Simón, S; Weisstaub, A R; Martín de Portela, M L Pita

    2014-06-01

    Introducción: aluminio (Al) es un elemento tóxico que puede ser contaminante de productos farmacéuticos utilizados para preparar mezclas de nutrición parenteral (NP). Objetivos: 1) determinar la concentración de Al en componentes individuales utilizados para preparar mezclas de NP; 2) comparar las cantidades detectadas con los límites de la regulación internacional (FDA); 3) calcular la cantidad de Al administrada en fórmulas habituales de NP para neonatos, niños y adultos. Materiales y métodos: El Aluminio fue determinado por Espectroscopía de Emisión Atómica-Plasma-Inductivo de Argón (Perkin Elmer 5100 DV) en 44 productos comerciales, de diferentes laboratorios y lotes, correspondientes a 16 componentes individuales: dextrosa; aminoácidos para adultos y pediátricos; lípidos; cloruro de potasio; cloruro de sodio, sulfato de magnesio; fosfato de sodio; gluconato de calcio; glicerofosfato de sodio; sulfato de zinc; elementos multitraza; agua estéril en ampollas y de gran volumen. Resultados: Todos los componentes de gran volumen, excepto el agua, contenían entre 249 y 1.580 μg/L, superando entre 4 y 180 veces mas que los niveles establecidos por la FDA (25 μg/L). Los componentes de pequeño volumen contenían entre 85 y 4.909 μg/L, no declarados en los rótulos. Conclusiones: 1) La mayor cantidad de aluminio se encontró en el gluconato de calcio, fosfato de sodio y elementos multitraza. 2) Las mezclas de uso habitual para NP presentan niveles de Al mayores al límite de FDA. Los componentes que aportan mayor cantidad de aluminio en las mezclas de NP para adultos son: glucosa, aminoácidos y lípidos, pero en las de neonatos, el mayor aporte proviene de la dextrosa y gluconato de calcio. 3) En las mezclas de NP para neonatos, niños y adultos la cantidad de aluminio administrado por kg de peso supera la recomendación de FDA (5 μg/kg de peso /día). Los productos comerciales deberían declarar el contenido de Al para no comprometer la evolución de los pacientes graves.

  13. Tax influences on Brazilian and Argentine biodiesel exports: a comparative study; A interferencia da tributacao na competitividade da exportacao de biodiesel brasileiro e argentino: um estudo comparado

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Evandro L. Heinzen da; Vieira, Diogo Guimaraes [PETROBRAS, Rio de Janeiro, RJ (Brazil)

    2008-07-01

    The rules of taxation in Brazil favor the export of primary products, while in Argentina the taxation stimulates the export of products which aggregated value is bigger. In this study we will analyse the sceneries of taxation in Argentina and Brazil. The comparison is useful so that it is possible to analyse the competitive differentials from in the countries. We agree that the great problem of the Brazilian taxation is in the accumulated credits of VAT, which in fact are incorporated like cost in the result of a business. In case of Argentina, the problem is related to the macroeconomic scenery, that emerged after the economic crisis in 2001. The study demonstrates that Argentina is not the best example of taxation for Brazil, and the risk of the Argentinian biodiesel enter in Brazilian market was perceived in 2007, however, after the tax alterations this risk was reduced. (author)

  14. 6th September 2011 - Argentine Minister of Science, Technology and Innovation J. L. Barañao signing the guest book with CERN Director-General R. Heuer.

    CERN Multimedia

    2011-01-01

    In the ATLAS Visitors Centre with Collaboration Spokesperson F. Gianotti and National Contact Physicist M. T. Dova. ATLAS Collaboration M. Mikenberg present. CERN-HI-1109229 24: In the CERN Control centre, from left to right: First Secretary at the Permanent Mission R. Bardoneschi, National Contact Physicist M.T. Dova, CERN Adviser for Latin America J. Salicio Diez, Minister Barañao and Beams Operation Group M. Benedikt.

  15. Parasites of commercial shrimps and fishes in Argentine sea: on the adult and metacercaria of Opecoeloides feliciae n. sp. (Digenea: Opecoelidae

    Directory of Open Access Journals (Sweden)

    Sergio Roberto Martorelli

    1992-03-01

    Full Text Available Opecoeloides feliciae n. sp., first record of opecoelid metacercariae in commercial shrimps of South Atlantic Ocean, parasitizing Cynoscion striatus (adults and Artemesia longinaris (metacercariae, is described, illustrated and compared with related species of the genus. Adults, immature worms and metacercariae are compared, and rates of prevalence and intensity of infection are also given.

  16. Environmental and climatic history in the NW Argentine Andes (24° S over the last 2100 years inferred from a high-altitude peatland record

    Directory of Open Access Journals (Sweden)

    K. Schittek

    2015-05-01

    Full Text Available High-altitude cushion peatlands are versatile archives for high-resolution palaeoenvironmental studies, due to their high accumulation rates, range of proxies and sensitivity to climatic and/or human-induced changes. Especially within the central Andes, the knowledge about climate conditions during the Holocene is limited. In this study, we present the environmental and climatic history for the last 2100 years of Cerro Tuzgle peatland (CTP, which is located in the dry Puna of NW Argentina, based on a multi-proxy approach. X-ray fluorescence (XRF, stable isotope and element content analyses (δ13C, δ15N, TN and TOC were conducted to analyse the inorganic geochemistry throughout the sequence, revealing changes in the peatland's past redox conditions. Pollen assemblages give an insight into substantial environmental changes on a regional scale. The palaeoclimate varied significantly during the last 2100 years. The results reflect prominent late Holocene climate anomalies and provide evidence that Northern Hemisphere temperature oscillations were extensive and affected the southward migration of the Intertropical Convergence Zone (ITCZ, and hence, the intensity of moisture flux within the South American Summer Monsoon (SASM belt. Volcanic forcing at the beginning of the 19th century (1815 Tambora eruption seems to have had an impact on climatic settings in the central Andes. In the past, the peatland recovered from climatic perturbations. Nowadays, CTP is heavily degraded by human interventions, and the peat deposit becomes increasingly susceptible to erosion and incision.

  17. A high-altitude peatland record of environmental changes in the NW Argentine Andes (24 ° S) over the last 2100 years

    Science.gov (United States)

    Schittek, Karsten; Kock, Sebastian T.; Lücke, Andreas; Hense, Jonathan; Ohlendorf, Christian; Kulemeyer, Julio J.; Lupo, Liliana C.; Schäbitz, Frank

    2016-05-01

    High-altitude cushion peatlands are versatile archives for high-resolution palaeoenvironmental studies, due to their high accumulation rates, range of proxies, and sensitivity to climatic and/or human-induced changes. Especially within the Central Andes, the knowledge about climate conditions during the Holocene is limited. In this study, we present the environmental and climatic history for the last 2100 years of Cerro Tuzgle peatland (CTP), located in the dry Puna of NW Argentina, based on a multi-proxy approach. X-ray fluorescence (XRF), stable isotope and element content analyses (δ13C, δ15N, TN and TOC) were conducted to analyse the inorganic geochemistry throughout the sequence, revealing changes in the peatlands' past redox conditions. Pollen assemblages give an insight into substantial environmental changes on a regional scale. The palaeoclimate varied significantly during the last 2100 years. The results reflect prominent late Holocene climate anomalies and provide evidence that in situ moisture changes were coupled to the migration of the Intertropical Convergence Zone (ITCZ). A period of sustained dry conditions prevailed from around 150 BC to around AD 150. A more humid phase dominated between AD 200 and AD 550. Afterwards, the climate was characterised by changes between drier and wetter conditions, with droughts at around AD 650-800 and AD 1000-1100. Volcanic forcing at the beginning of the 19th century (1815 Tambora eruption) seems to have had an impact on climatic settings in the Central Andes. In the past, the peatland recovered from climatic perturbations. Today, CTP is heavily degraded by human interventions, and the peat deposit is becoming increasingly susceptible to erosion and incision.

  18. Le « cas Argentine » revisité de l'utopie libérale au retour de la politique...

    OpenAIRE

    2007-01-01

    Argentina constitutes a revealing textbook case of the link between the liberal utopia of an auto-regulated market, commodity fetishism and economists’ theories. How does economic liberalisation, backed by a law on currency convertibility, resolve the crisis of political representation affecting the country since the emergence of Peronism, the « voice of the voiceless », in the 1940s ? The liberal utopia of markets’ auto-regulation associates taking root in social life with having money, by m...

  19. Durability of five native Argentine wood species of the genera Prosopis and Acacia decayed by rot fungi and its relationship with extractive content.

    Science.gov (United States)

    Pometti, Carolina L; Palanti, Sabrina; Pizzo, Benedetto; Charpentier, Jean-Paul; Boizot, Nathalie; Resio, Claudio; Saidman, Beatriz O

    2010-09-01

    The natural durability of four Argentinean species of Prosopis and one of Acacia was evaluated in laboratory tests, according to European standards, using three brown rot and one white rot fungi. These tests were complemented by assessing the wood chemical composition. All the species were from moderately slightly durable to very durable (classes 4-1), and in all cases the heartwood was the most resistant to fungal attack. Chemical extractives content (organic, aqueous, tannic and phenolic) was higher in the heartwood. However, species durability was not related to extractive contents nor with wood density. Instead, it is possible that extractives could contribute to natural durability in different ways, including the effects related to the antioxidant properties of some of them.

  20. Significativa descompensación isostática en la Cuenca del Colorado (República Argentina Significative isostatic uncompensation in the Colorado Basin (Argentine Republic

    Directory of Open Access Journals (Sweden)

    A Introcaso

    2003-09-01

    Full Text Available En este trabajo se ha analizado el balance isostático en la zona más profunda de la cuenca sedimentaria del Colorado, utilizando anomalías de gravedad. Las anomalías isostáticas (AI alcanzan un máximo de + 90 mGal señalando: (1 una ostensible sobrecompensación actual y (2 que en lo futuro la cuenca debería subsidir significativamente para recuperar el equilibrio de masas. La magnitud de la descompensación isostática fue obtenida a partir de un modelo de inversión (desde las anomalías de Bouguer (ABc corregidas por efectos sedimentarios que fue comparado con un modelo de estiramiento perfectamente compensado, asumido a partir de datos sísmicos profundos (antirraíz y de fallamiento directo (expresado por líneas sísmicas en el basamento que soporta al desarrollo sedimentario.Isostatic balance on the deepest zone of the Colorado sedimentary basin was analysed using gravity anomalies. Isostatic anomalies (AI reach + 90 mGal, pointing out: (1 notable overcompensation today and (2 a tendency of the basin of significantly subsiding in the future to recover masses equilibrium. A value for characterising no isostatic compensation was obtained by an inversion model from Bouguer anomalies (ABc corrected for sedimentary effects. This model was compared with a perfectly compensated stretching model, that was assumed from deep seismic data (antiroot and from direct faulting (obtained from seismic lines on the basement supporting the sedimentary filling.

  1. EL MOVIMIENTO INSTITUCIONALIZADO: DANZAS FOLKLÓRICAS ARGENTINAS, LA PROFESIONALIZACIÓN DE SU ENSEÑANZA / Institutionalized movement: professional education of argentine folk dances

    Directory of Open Access Journals (Sweden)

    María Belén Hirose

    2010-09-01

    Full Text Available En 1948 se creó la Escuela Nacional de Danzas Folklóricas, como parte del Plan Quinquenal del primer gobierno de Juan D. Perón (1946-1952. Así se dio inicio a la profesionalización de la transmisión y difusión de las danzas folklóricas en su carácter de danzas nacionales, tarea que quedaría concretada con la formación de un cuerpo de profesores nacionales de danza. Este proceso suponía el establecimiento de criterios de selección y transformación de aquellas danzas que se consideraran adecuadas para dar materialidad, mediante coreografías, música, vestimenta y eventos, al sentimiento de la nacionalidad. El folklore académico, en pleno proceso de consolidación como disciplina científica, fue también funcional al proyecto nacional, proveyendo los criterios para la creación del repertorio de danzas que sería enseñado en Buenos Aires y transportado luego a las provincias.En este artículo nos proponemos describir el desarrollo histórico que posibilitó la institucionalización de la enseñanza de las danzas folklóricas en la Argentina, y los efectos de dicha institucionalización. Exploramos el rol que diversos grupos o individuos pertenecientes al ámbito político, cultural y/o académico, asignaron a la enseñanza de las danzas folklóricas en las diferentes etapas del proceso de construcción y fortalecimiento del estado-nación argentino.

  2. 78 FR 40131 - Proposed Subsequent Arrangement

    Science.gov (United States)

    2013-07-03

    ... (ANSTO) in Lucas Heights, Sydney, Australia, to the Deposito de Materiales Nucleares (DEMANU) and/or... Aires, Argentina. The material, which is currently located at ANSTO's OPAL reactor, will be transferred to the CNEA DEMANU and/or DUE warehouses for storage. ANSTO originally obtained the material...

  3. "Lo que el pueblo necesita". Turismo social y Peronismo. Argentina, 1945-1955 “Ce dont le peuple a besoin”. Tourisms social et péronisme. Argentine, 1945-1955 “What the people need”. Social tourism and peronism. Argentine, 1945-1955

    Directory of Open Access Journals (Sweden)

    Marcelo Pedetta

    2011-08-01

    Full Text Available Pendant les deux premières années de la présidence de J. D. Perón (1946-1955, et dans le cadre du processus appelé « démocratisation du bien-être », les questions relatives à l'accès au loisir et au temps libre ont occupé un espace chaque fois plus important. Ainsi, les pratiques sociales et culturelles pendant les périodes de vacances dans les secteurs moyens et ouvriers ont été favorisées au moyen des politiques publiques qui ont conflué avec les initiatives de la société civile. Pendant cette période l'État National a ouvert les canaux qui ont permis l'inclination de ces secteurs sociaux, vers la consommation d'une variété d'activités récréatives. Sur ce rapport, il est intéressant d'analyser quelques unes de ces politiques ainsi que la réception et l'impact qu'elles ont exercé sur ces sujets sociaux. Pour cela nous effectuerons un exercice méthodologique avec une source historique privilégiée: le fonds documentaire « Secrétariat Technique. Première et Seconde Présidence du Général Juan Domingo Perón (1946 - 1955 », un patrimoine documentaire qui résume la réponse - au moyen de lettres du « peuple » à la convocation de l'État devant le second plan Quinquennal.Throughout J.D. Peron’s first two terms in office (1946-1955, against the backdrop the so-called “welfare democratization” process, leisure and free time progressively gained momentum. Vacation habits in the middle and working classes became richer thanks to both public policies and civil initiatives. During this period, the National State not only re-adopted previous programs, but it also opened new channels favoring the entrance of the abovementioned sectors into the recreational-activity market. The purpose of this presentation is to analyze some of these policies, highlighting their reception by, and impact on, the middle and working classes. To this end, a methodological exercise will be carried out on the basis of a privileged source: the archives of the “Secretaría Técnica. Primera y Segunda Presidencia del General Juan Domingo Perón (1946 – 1955”, a collection of documents summarizing the answer –by way of letters– of the populace to the State’s call during the elaboration of the second five-year plan.Durante los años de las dos primeras presidencias de J. D. Perón (1946-1955, y en el marco del proceso denominado "democratización del bienestar", las cuestiones relativas al acceso al ocio y al tiempo libre fueron ocupando un espacio cada vez más destacado. Así, las prácticas vacacionales en los sectores medios y obreros estuvieron fomentadas mediante las políticas públicas que confluyeron con las iniciativas procedentes de la sociedad civil. Durante esta etapa el Estado Nacional, a la vez que retomó tendencias puestas en marcha en etapas previas, abrió los canales que permitieron la inclinación de estos sectores sociales, hacia el consumo de una variedad de actividades recreacionales. Analizaremos aquí algunas de estas políticas como así también la recepción y el impacto que ellas ejercieron sobre dichos sujetos sociales. Para ello realizaremos un ejercicio metodológico con una fuente privilegiada: el fondo documental "Secretaría Técnica. Primera y Segunda Presidencia del General Juan Domingo Perón (1946 – 1955", un acervo documental que resume la respuesta –mediante cartas- del 'pueblo' a la convocatoria del Estado ante el Segundo Plan Quinquenal.

  4. 2011 Progress Report on HEU Minimization Activities in Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Bonini, A.; Cristini, P.; Lio, L. De; Dell' Occhio, L.; Gil, D.; Gonzalez, A.G.; Gonzalez, R.; Varela, C. Komar; Lopez, M.; Novara, O.; Taboada, H. [Comision Nacional de Energia Atomica, Av. Del Libertador 8250 (1429) Buenos Aires (Argentina)

    2011-07-01

    After the core conversion of the RA-6 reactor finished in March 2008, an extension of the original CNEA-NNSA DoE contract was signed to enhance the final national HEU inventories minimization. Before this process, CNEA reserved a small inventory of HEU for R and D uses in fission chambers, neutronic probes and standards. This minimization comprises that all fresh and irradiated HEU remnant inventories coming from fuels and Mo99 irradiation targets fabrication and irradiated HEU-oxides retained in production filters and solutions will be recovered, down-blended into LEU and purified or dispose as waste whenever its recovery would not be advisable due to cost-benefit consideration. CNEA has a R and D program to develop the fabrication technology of both dispersed U-Mo (Al-Si matrix and Al cladding) and monolithic (Zry-4 cladding) miniplates to support the qualification activities of the RERTR program. Some monolithic 58% enrichment and LEU 8%Mo and U10%Mo miniplates and plates were and are being delivered to INL-DoE to be irradiated in the ATR reactor core. CNEA, a worldwide leader on LEU technology for fission radioisotope production is providing Brazil with 1/3 of the national requirements on Mo99 by weekly deliveries. Australia has started the fission radioisotope production through several batches by week, based on CNEA's LEU technology provided by INVAP SE. CNEA is also committed to improve the diffusion of LEU target and radiochemical technology for radioisotope production and target and process optimization. Future plans include: 1. Plans to recover and purify the LEU based inventories in Mo99 production filters, once the HEU to LEU campaign is over. 2. Fabrication and delivering to INL to be irradiated in the ATR core of U-8%Mo and U-10%Mo monolithic miniplates and development and fabrication of LEU very high density monolithic and dispersed U-Mo fuel plates with Zr cladding for the FUTURE-MONO experiment in the frame of the RERTR program. 3

  5. Association of Toll-like receptor 2 Arg753Gln and Toll-like receptor 1 Ile602Ser single-nucleotide polymorphisms with leptospirosis in an Argentine population.

    Science.gov (United States)

    Cédola, Maia; Chiani, Yosena; Pretre, Gabriela; Alberdi, Lucrecia; Vanasco, Bibiana; Gómez, Ricardo M

    2015-06-01

    Toll-like receptor 2 (TLR2), a member of the Toll-like receptor family, plays an important role in the recognition of and subsequent immune response activation against leptospirosis in humans. The genetic polymorphism in TLR2 of an arginine to glutamine substitution at residue 753 (Arg753Gln) has been associated with a negative influence on TLR2 function, which may, in turn, determine the innate host response to Leptospira spp. This bacterium signals through TLR2/TLR1 heterodimers in human cells. The aim of the present study was to investigate the Arg753Gln single-nucleotide polymorphism (SNP) of the TLR2 gene, and the isoleucine to serine transversion at position 602 (Ile602Ser) of the TLR1 gene (previously associated with Lyme disease), in leptospirosis patients compared to healthy controls, carrying out a retrospective case/control study. The TLR2 polymorphism adenine (A) allele was observed in 7.3% of leptospirosis patients but was not found in the control group, whereas the guanine (G) allele of the TLR1 polymorphism was found in 63.6% of patients and 41.6% of controls. Susceptibility to leptospirosis disease was increased 10.57-fold for carriers of the TLR2 G/A genotype (P=0.0493) and 3.85-fold for carriers of the TLR1 G/G genotype (P=0.0428). Furthermore, the risk of developing hepatic insufficiency and jaundice was increased 18.86- and 27.60-fold for TLR2 G/A carriers, respectively. Similarly, the risk of developing jaundice was increased 12.67-fold for TLR1 G allele carriers (G/G and T/G genotypes). In conclusion, the present data suggest that the TLR2 Arg753Gln and TLR1 Ile602Ser SNPs influence the risk of developing leptospirosis and its severity.

  6. General physicians and the management of heart failure in an Argentine population Los médicos generales y el tratamiento de la insuficiencia cardíaca en una muestra de la población argentina

    Directory of Open Access Journals (Sweden)

    Mario A Ciruzzi

    2004-06-01

    Full Text Available The aim of this study was to assess how general physicians (GP think that heart failure (HF should be managed and how they implement their knowledge. It was conducted in Buenos Aires City and suburban area, with the collaboration of 5 cardiologists, and 29 GP who were selected randomly, and were asked to keep a log of all patients they saw with HF. The methodology was similar to that employed in an international initiative named"Improvement" already performed in Europe. Data were obtained of 220 note patients. GP knowledge and perceptions about the management of HF were assessed initially with a"perception survey", and later on how a representative sample of patients was managed, with an"actual practice survey". The electrocardiogram and the chest radiograph were recorded in most patients (≅90%, but the echocardiogram only in 67% of cases. Forty percent of the patients had history of myocardial infarction and ischaemic heart disease, but exercise test was not considered as a potential diagnostic test and was recorded only in 16% of the patient records. Likewise coronary angiogram was performed in 7% of patients. Only 23% of the patients had a left ventricular ejection fraction test result documented in their charts. In practice, 43% of GP patients were receiving an ACE inhibitor and one third betablockers. Only 9% received these drugs in combination. At the last interview, 50% had hypertension (blood pressure > 140/90 and 15% had not recorded this data in patients notes. This study identified, in a random sample of GP of Buenos Aires City and suburbs, that management of HF was less than optimal.El objetivo de este estudio fue evaluar cómo los médicos generales (MG piensan que debe tratarse la insuficiencia cardíaca (IC y cómo ponen en práctica su conocimiento. Se realizó en la ciudad de Buenos Aires y su área suburbana, con la colaboración de 5 cardiólogos, y de 29 MG que fueron seleccionados al azar, a los cuales se les solicitó que guardasen las historias clínicas de todos los pacientes que ellos habían atendido con IC. Se obtuvieron los datos de 220 pacientes. La metodología fue similar a la utilizada en una iniciativa internacional llamada Improvement realizada en Europa. Se evaluó el conocimiento de los MG y su percepción sobre el manejo de la IC mediante una "encuesta de percepción", y cómo una muestra representativa de pacientes fue tratada, a través de una"encuesta sobre la práctica". El electrocardiograma y la radiografía de tórax se le pidieron a la mayoría de los pacientes (≅90%, pero el ecocardiograma se pidió sólo en el 67% de casos. Cuarenta por ciento de los pacientes tenían historia de infarto de miocardio y de angina de pecho, pero la ergometría no fue considerada como una prueba de diagnóstico importante y sólo se asentó en el 16% de las HC. Igualmente la cinecoronariografía se realizó en el 7% de pacientes. Sólo el 23% de los pacientes tenían una fracción de eyección del ventrículo izquierdo documentada en sus HC. En la práctica, el 43% de pacientes estaban recibiendo un inhibidor de la ECA y una tercera parte betabloqueantes. Sólo 9% recibieron estas drogas combinadas. En la última entrevista, 50% tenían hipertensión arterial (> 140/90 mmHg y en 15% no se había consignado este dato en las HC de los pacientes. Este estudio mostró que el conocimiento y tratamiento de la IC en una muestra de MG, era menor que el óptimo.

  7. La asociación de recursos de valoración: el caso de las organizaciones de derechos humanos en la prensa escrita argentina (Combining Appraisal resources: human rights organizations in the Argentine press

    Directory of Open Access Journals (Sweden)

    Mariana Pascual

    2014-12-01

    Full Text Available En las últimas décadas hemos presenciado un creciente interés por los estudios del lenguaje desde perspectivas críticas, fundados en la necesidad de develar posicionamientos ideológicos que atentan, a menudo, contra los intereses de grupos de limitado poder social. A fin de develar los posicionamientos, y en consecuencia la construcción y consolidación de ideologías a lo largo del tiempo, la teoría de la valoración (Martin, 2000; Martin y White, 2005, en el marco de la Lingüística Sistémico Funcional (LSF, brinda herramientas de particular valor en el análisis de discursos de medios. Este marco se combina y enriquece con propuestas que comparten la base que responden a los postulados del enfoque sociohistórico discursivo propuesto por Reisigl y Wodak (2001 y por Wodak y Meyer (2003. La visión del lenguaje como práctica social (Fairclough y Wodak, 1997 es compartida por la LSF, en tanto esta se constituye como teoría lingüística multifuncional al servicio del análisis del discurso como entidad construida por los propios propósitos sociales a los que contribuye, y visualiza al lenguaje como una forma de semiótica social (Halliday, 1978; Halliday y Matthiessen, 2014. Este trabajo propone ilustrar el uso estratégico de recursos evaluativos y su asociación a partir del análisis de noticias publicadas en cinco influyentes diarios argentinos. Todos los artículos fueron publicados con motivo de un hecho de violencia de gran impacto social acaecido a mediados de 1985, época marcada por el retorno de la democracia al país, en medio de una marcha militar liderada por el entonces presidente Alfonsín. En este hecho se vio involucrada la agrupación Madres de Plaza de Mayo, grupo formado por madres de las más de 30.000 víctimas de la dictadura militar que gobernó Argentina entre 1976 y 1983. El análisis arroja luz sobre el uso de una amplia variedad de recursos valorativos, tanto de Compromiso como de Actitud, así como también un uso vasto de elementos de Gradación, tanto infundidos lexicalmente como de formas aisladas. Resulta de particular interés la combinación de recursos valorativos realizada por los autores para la construcción de valoraciones de polaridad negativa acerca de las nociones de violencia y de disrupción de la normalidad. Sin embargo, las mayores diferencias observadas no fueron detectadas en los tipos de recursos léxico-gramaticales utilizados, sino en las diferentes intensidades de las evaluaciones planteadas. Este fenómeno podría dar cuenta de la imposibilidad de recurrir a otras opciones de construcción discursiva mediática viables que resulten políticamente correctas en un momento sociohistórico dado, como el que se analiza. Los resultados pueden contribuir a la comprensión del funcionamiento de los recursos lingüísticos por los que se construyen y consolidan posicionamientos ideológicos en la sociedad moderna mediatizada. (The last decades have witnessed a growing interest in language studies from critical perspectives, aiming at revealing ideological positioning which often oppose the interest of groups with limited social power. With the aim of unveiling positioning, Appraisal Theory (Martin, 2000; Martin & White, 2005 within Systemic Functional Linguistics (SFL proposes analytical tools, which have proved to be particularly useful for the study of media discourse. This study illustrates the strategic use and combination of evaluative resources by analyzing the news stories published by five influential Argentinean newspapers regarding the organization Madres de Plaza de Mayo, which is a group formed by the mothers of over 30,000 victims of the military dictatorship that ruled the country between 1976 and 1983. The texts were published in relation to one specifically significant event that took place in 1985, in which a violent riot emerged in a military parade. The analysis sheds light on the combination of evaluative resources for the construction of negative values in relation to the judgment of violence and the disturbance of normality. However, the main difference lies not on the value constructed but on the intensity of the evaluation, which may be related to the lack of a politically correct option at a given sociohistorical point in time such as the one under analysis. The results may contribute to an understanding of the functioning of linguistic resources through which ideological alignment is constructed and consolidated in our modern mediatized society.

  8. Plantas asociadas a la pesca y a sus recursos por los Indígenas Chorote del Chaco Semiárido (Argentina Plants associated to fishing and to their resources by Chorote indians from Chaco Semiarido (Argentine

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    Gustavo F. Scarpa

    Full Text Available Los indígenas Chorote pertenecen a la familia lingüística Mataco-mataguayo y se hallan asentados en el Chaco Semiárido argentino sobre las costas del río Pilcomayo, provincia de Salta. Tradicionalmente subsistían de la caza, recolección y pesca, siendo esta última de considerable importancia cultural y económica aún en nuestros días. Se realizaron siete investigaciones de campo donde se registró la información y se colectó el material vegetal de referencia. Se efectuaron entrevistas semi-estructuradas con informantes cualificados acerca de los roles de las plantas en su cultura, y especialmente en la captura y aprovechamiento del pescado. Se registraron 49 especies vegetales con un total de 100 datos etnobotánicos, los cuales se pueden clasificar en: rituales; indicadores temporales; confección de artes de pesca; armas; trampas sobre el río; cebos; instrumental de acarreo, de cocción y de almacenamiento. Los cebos y la confección de redes y armas involucraron el mayor número de especies y de usos. Las plantas más importantes en la pesca son Bromelia urbaniana, B. hieronymi, Mimozyganthus carinatus, Ruprechtia triflora, Salix humboldtiana, Solanum argentinum y Tessaria integrifolia var. ambigua . Sin ellas la explotación pesquera sería prácticamente imposible para esta gente; actividad a partir de la cual obtienen hoy día buena parte de su subsistencia.Chorote indians belong to the Mataco-mataguayo linguistic family, they live in Argentina's Semiarid Chaco along the riverbanks of the Pilcomayo river in Salta province. Traditionally, they obtained their own living from hunting, gathering and fishing; being the latter of high cultural and economic value at present times already. Seven fieldwork expeditions were carried out in order to obtain the information and to collect plant specimens. Semi-structured interviews were made to 37 qualified informants about the roles of plants in their culture and, specifically, in fishing practices and the utilization of derived resources. Forty-nine (49 plant species and 100 ethnobotanical data were recorded. Plants are used in ritual practices, as temporal indicators, for making fishing tackle, weapons, traps on the river, baits, and implements for handling, cooking and storing fishes. Baits, fishing nets, and weapons involved the highest number of species and uses. The most outstanding plants involved in fishing are Bromelia urbaniana, B. hieronymi, Mimozyganthus carinatus, Ruprechtia triflora, Salix humboldtiana, Solanum argentinum and Tessaria integrifolia var. ambigua. Without them fishing activity would become practically impossible to Chorote people, from which they still obtain a good part of their living.

  9. Hydrodynamic, geochemical and isotopic analysis for the assessment of low temperature hydrothermal systems in the Argentine plain; Analisis hidrodinamico, geoquimico e isotopico de base para la evaluacion de sistemas hidrotermales de baja temperatura en la llanura cordobesa (Argentina)

    Energy Technology Data Exchange (ETDEWEB)

    Cabrera, A.; Blarasin, M.; Matteoda, E.

    2010-07-01

    A hydrogeological model of the low temperature aquifer system in the South of the pampean plain is presented, with emphasis on dynamic, geochemical and isotopic groundwater studies. Isotopic analysis ({sup 18}O, {sup 2}H and {sup 3}H) and geothermometers (SiO{sub 2}, Na/K, Na/K/Ca, Na/Li and Mg/Li) were used. The area is part of the lower megablock associated to a geological regional fault system (N-S). The deep aquifers are related to a multilayer sedimentary system associated with different stages of a Tertiary fluvial network. Three deep multilayer aquifers were defined taking into account hydraulic behaviors, depths and groundwater quality. The two shallower and less confined aquifers had higher salinities and similar isotopic composition to the unconfined aquifer (-4.8 {per_thousand}{approx}{delta}{sup 18}O; {delta}{sup 2}H{approx}-30 {per_thousand}) suggesting hydraulic connection between them. The deepest and more confined level, showed water more fresh and a more impoverished isotopic composition (-6.6 {per_thousand}{approx}{delta}{sup 18}O; {delta}{sup 2}H{approx}-43 {per_thousand}), suggesting allochthonous recharge. In this deepest level, the sulphate water type and hydraulic estimations suggest aging from recharge areas, which is supported by very low {sup 3}H values ({approx} 1.5{+-}0.4 UT). The groundwater has temperatures ({<=} 35.8 C) exceeding up to 10 C those expected by the laying depths. The geothermal anomaly, according to the regional tectonic model, is due to a possible cortical thinning, the probable presence of deep granitic rocks (U, Th, K) which would have capacity to produce high internal radiogenic heat and the geological faults that facilitate the circulation of water at different depths. (Author).

  10. Confirmación de la presencia de Cyathea atrovirens (Cyatheaceae en la provincia de Corrientes, Argentina Confirmation of the presence of Cyathea atrovirens (Cyatheaceae in Corrientes province, Argentine

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    J. L. Fontana

    Full Text Available Poblaciones de Cyathea atrovirens fueron halladas recientemente en dos localidades ubicadas sobre la costa del río Paraná, en la provincia de Corrientes, después de la formación del embalse de la Represa Yacyretá.Populations of Cyathea atrovirens were recently found in two locations sited on the coast of Paraná River, in the Province of Corrientes (Argentina, after the formation of the Yacyretá Reservoir.

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

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    Francisco Darío Maldonado

    2012-10-01

    Full Text Available El objetivo de este trabajo fue evaluar la aplicación de una metodología de detección y monitoreo de los desmontes, resistente a la irregularidad de la adquisición de imágenes en la región del Espinal entrerriano. El monitoreo de los cambios de uso y cobertura de las tierras es actualmente necesario para la política gubernamental de manejo y conservación de los recursos naturales. El área de estudio fue el Departamento Feliciano al norte de la Provincia de Entre Ríos, región noreste de Argentina. La vegetación es la típica formación arbórea del Espinal entrerriano sometido a la actividad ganadera extensiva. La metodología usó imágenes Landsat TM para formar un paquete multitemporal de bandas espectrales de la imagen de la segunda fecha y una banda intensidad del cambio obtenida por la técnica RCEN. Sobre este paquete se aplicó una técnica de “segmentación de imágenes por crecimiento de regiones” con semillado manual. Finalmente, se realizó el agrupamiento temático basado en la interpretación visual. En total, fueron detectados 1680ha desmontadas entre agosto de 2009 y diciembre de 2010, y 1140ha desmontadas entre diciembre de 2010 y abril de 2011. La segmentación de imágenes con bandas “intensidad del cambio” con semillado manual obtuvo buenos resultados para la detección de desmontes. Este resultado fue corroborado por la fiscalización in situ de los organismos gubernamentales.AbstractThe objective of this study was to evaluate the application of a methodology for detecting and monitoring forest clearance. The methodology should be unaffected to irregular image acquisition in the region of the “Espinal” (thorn forest in northeastern Argentina. Monitoring changes in land use and cover is needed for government policies of conservation and management of natural resources. The study area was the Department Feliciano northern of Entre Rios province. The typical vegetation is Espinal thorn forest, subjected to selective logging for extensive livestock ranching. The methodology used Landsat TM images to form a multitemporal package with spectral bands of the second date and change intensity band obtained by the RCAN technique. On this package we applied a technique “Image segmentation by region growing” with manual seeding. Finally, the thematic aggregation based on visual interpretation was made. A total of 1680 ha cleared were detected between August 2009 and December 2010, and 1140ha cleared between December 2010 and April 2011. The segmentation of images with intensity bands change with manual seeding obtained god results for detecting forest clearing. This result was verified in situ by government agencies.

  12. Vacuna contra la fiebre hemorrágica argentina Candid#1 producida en la Argentina: Inmunogenicidad y seguridad Candid#1 vaccine against Argentine Hemorrhagic Fever produced in Argentina: Immunogenicity and safety

    OpenAIRE

    Enria, Delia A.; Ana M. Ambrosio; Ana M Briggiler; María R. Feuillade; Eleonora Crivelli

    2010-01-01

    Se realizó un estudio clínico en 946 voluntarios humanos sanos, donde se comparó la vacuna Candid#1 producida en Argentina con la elaborada en EE.UU., que había sido utilizada en estudios previos. Como objetivo primario se evaluó la equivalencia en la eficacia utilizando como marcador subrogante a la inmunogenicidad medida por detección de anticuerpos neutralizantes. Como objetivo secundario se evaluó la equivalencia en inocuidad comparando las tasas de reacciones adversas. Ambas vacunas most...

  13. Atribuição de causalidade ao sucesso e fracasso escolar: um estudo transcultural Brasil-Argentina-México Causal attribution to success and failure in school: a transcultural study Brazil-Argentin-Mexico

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    Maria Cristina Ferreira

    2002-01-01

    Full Text Available O estudo comparou os mecanismos atribuicionais utilizados por alunos brasileiros, argentinos e mexicanos, ao explicarem o sucesso e fracasso escolar. A amostra compôs-se de 1594 estudantes de bom ou mau rendimento escolar, de ambos os sexos, com idades entre 14 e 20 anos e pertencentes a escolas públicas e particulares de ensino médio, que responderam a um questionário sobre as causas de seu próprio desempenho, do de seus colegas, de alunos de outro tipo de escola e de outras nacionalidades. Os três grupos nacionais adotaram prioritariamente o esforço como causa explicativa do próprio sucesso e fracasso escolar e do de outros alunos, embora tenham ocorrido diferenças entre os padrões atribuicionais, em função da nacionalidade, sexo e tipo de escola. Tais resultados são discutidos com base nos vieses atribuicionais associados à tendência auto-servidora e ao erro fundamental de atribuição e nas peculiaridades culturais que caracterizam os três países.The attributional mechanisms used by Brazilian, Argentinean and Mexican students to explain the academic success and failure were compared. The sample consisted of 1594 high school students of both sexes separated into either high or low achievement groups, attending either public or private institutions. They were asked to indicate the causes of their own performance, of their classmates, of students from a different kind of school and of students from another country. Effort was chosen by the majority of students from the three national groups as an explanation of either success or failure of their own, of other students from the same country and of students from different countries, albeit observed differences in attributional patterns as a function of nationality, sex and type of school. These results are discussed based both on the self-serving attributional bias and the fundamental attribution error theoretical framework, by taking into account the cultural peculiarities of the three countries which participated in the study.

  14. A história e as ciências sociais na profissionalização da historiografia argentina History and the social sciences in the professionalization of Argentine historiography

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    Fernando J. Devoto

    2009-01-01

    Full Text Available Neste artigo, o autor reconstrói as relações travadas entre os praticantes da disciplina histórica na Argentina e os novos aportes trazidos pelas ciências sociais, num período que vai desde meados do século XIX, com a Historia de Belgrano (1857, de Bartolomé Mitre, até o término da Primeira Guerra Mundial, quando a chamada Nueva Escuela Histórica passa a controlar a disciplina na universidade (após a Reforma Universitária de 1918. Para tal, detém-se especialmente nas apropriações feitas pelo debate local argentino das proposições da historiografia positivista europeia, como a obra de H. Taine, por exemplo, concentrando-se nos seguintes autores: Bartolomé Mitre, Vicente Fidel López, José María Ramos Mejía, Ernesto Quesada, Augustín García, Juan Álvarez e Paul Groussac.In this article the author reconstructs the relations between academic historians in Argentina and the new contributions made by the social sciences during a period spanning from the mid 19th century, with the publication of Historia de Belgrano (1857 by Bartolomé Mitre, to the end of the First World War, when the so-called New Historical School began to control the discipline in the university following the 1918 University Reform. To this end, the text pays special attention to the ways in which the local debate in Argentina appropriated the proposals of positivist European historiography, such as the work of H. Taine, concentrating on the following authors: Bartolomé Mitre, Vicente Fidel López, José María Ramos Mejía, Ernesto Quesada, Augustín García, Juan Álvarez and Paul Groussac.

  15. Ataxia espinocerebelosa 7: Investigación clínica y genética en una familia argentina Spinocerebellar ataxia 7: Clinical and genetic investigation in an Argentine family

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    Juan I. Rojas

    2007-04-01

    Full Text Available Las ataxias espino cerebelosas (AEC, constituyen un grupo de trastornos hereditarios neurodegenerativos de herencia autosómica dominante. Se caracterizan principalmente por la presencia clínica de ataxia cerebelosa asociada a oftalmoplejía, disartria, signos piramidales o extrapiramidales y pérdida de la sensibilidad profunda. La AEC 7 pertenece al grupo de las ataxias espinocerebelosas en la cual el trastorno es consecuencia de la expansión del triplete CAG localizado en el cromosoma 3 p12-p21. La característica clínica de dicha ataxia es la pérdida de la agudeza visual y posterior ceguera. Presentamos tres individuos de una familia con ataxia cerebelosa, pérdida de la agudeza visual y otros signos neurológicos. El diagnóstico fue confirmado por medio del análisis genético en el cual se observó la anormalidad característica de la AEC 7. Este es el primer caso de AEC 7 en Argentina confirmado por estudio genético. En la revisión de la literatura (hasta enero 2006 se hallaron sólo dos familias notificadas en América Latina. El objetivo del trabajo es el de enfocar la atención en el diagnóstico de esta enfermedad degenerativa en pacientes que se presentan con ataxia cerebelosa progresiva asociada con disminución de la agudeza visual e historia familiar positiva.Spino cerebellar ataxia (SCA are a complex group of hereditary neurodegenerative disturbances of autosomal dominant pattern. They are largely characterized by the clinical presence of cerebellar ataxia related to ophtalmoplegia, dysarthria, pyramidal and extra-pyramidal signs and loss of deep sensitivity. SCA 7 belongs to the SCA group in which the disturbance is a result of the expansion of CAG triplet repetition located in the 3p12-p21 chromosome. The characteristic clinical feature of SCA7 is the loss of visual acuity and blindness. We present here three cases of ataxia, from the same family, with loss of visual acuity and other neurological disorders. The diagnosis was confirmed by a genetic analysis of the index case in whom the characteristic genetic abnormality of SCA7 was discovered. To our knowledge, this is the first case of SCA7 confirmed by genetic study in Argentina. Only two other reports on family cases were found in a review of the literature of Latin America up to January 2006. The purpose of our report is to draw attention to the diagnosis of this degenerative disease in patients with progressive cerebellar ataxia associated with loss of visual acuity symptoms, where a positive family history is found.

  16. Le Système National des Données Biologiques, Ministère de la Science, la Technologie et l’Innovation Productive d’Argentine

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    Cristina Damborenea

    2014-06-01

    Full Text Available Introduction Appréhender la biodiversité de notre planète demeure l’un des plus grands défis auxquels les biologistes restent confrontés à l’heure actuelle. Les spécimens préservés dans les collections consacrées à l’histoire naturelle figurent parmi les sources les plus consultées pour connaître la diversité des espèces. Pendant longtemps, les informations contenues dans ces collections et l’accès à ces dernières étaient l’apanage d’experts associés à des institutions spécialisées, qui gérai...

  17. La norma argentina de construcción de tesauros IRAM 32057: necesidad de actualización. 1. El vocabulario controlado The Argentine Standard for Thesaurus Construction IRAM 32057: a Need for Updating. 1. The Controlled Vocabulary

    OpenAIRE

    Ana M. Martínez; Paola Mendes

    2009-01-01

    Se comparó la norma argentina de construcción de tesauros monolingües (IRAM 32057:1983) con las últimas ediciones de la norma internacional (ISO 2788:1986), las normas nacionales de España (UNE 50106:1990), Estados Unidos (Z39.19:2005) y Gran Bretaña (BSI 8723-2:2005b), así como diversos manuales reconocidos. Se analizaron tanto el alcance y los aspectos formales de la norma, como los conceptos referidos a la normativa sobre el vocabulario controlado. El alcance de la norma argentina se limit...

  18. Changements climatiques et variations du champ magnetique terrestre dans le sud de la Patagonie (Argentine) depuis 51 200 ans reconstitues a partir des proprietes magnetiques des sediments du lac Laguna Potrok Aike

    Science.gov (United States)

    Lise-Pronovost, Agathe

    Rock magnetism is influenced by climate and by the Earth's magnetic field. The goal of this thesis is to use the rock magnetic properties of the long sedimentary sequence from the lake Laguna Potrok Aike (106 m, 51200 cal BP) to derive paleomagnetic and paleoclimatic records in a key area of the Southern Hemisphere that is poorly documented. Laguna Potrok Aike (52°S, 70°W) is located in southeastern Patagonia (Argentina) in the path of the strong Southern Hemisphere westerly winds and in the source area of the dust deposited in Antarctica during Glacial periods. The lake geographical location is therefore ideal to reconstruct past changes in aeolian activity and climate changes in Patagonia. It is also a key location to reconstruct past changes of the geomagnetic field because the Southern Hemisphere is significantly under-documented relative to the Northern Hemisphere. In addition, the proximity of the South Atlantic Anomaly (SAA) as well as the Southern Hemisphere high flux lobes could allow identifying differences in the paleomagnetic field evolution in southern South America relative to the much more documented Northern Hemisphere. For his strong potential to provide high-resolution climatic, aeolian and paleomagnetic records beyond the last climatic transition, the maar lake Laguna Potrok Aike was drilled in the framework of the International scientific Continental Drilling Program (ICDP) for the Potrok Aike maar lake Sediment Archive Drilling prOject (PASADO). In this thesis, high-resolution rock-magnetic and physical properties are used in order to reconstruct paleoclimate and paleomagnetic records from the southernmost part of South America. In the first chapter, the full-vector paleomagnetic record (inclination, declination and relative paleointensity) derived from the sediments of Laguna Potrok Aike. A grain size influence on the relative paleointensity record (NRM/ARM) was corrected using the median destructive field of the natural remanent magnetisation (MDFNRM). Full-vector comparison of the new paleomagnetic record with other records from southern South America, elsewhere in the Southern Hemisphere, as well as dipole field models and compilations reveal similar millennial-scale variability. The Laschamp geomagnetic excursion and possibly the Mono Lake as well as the Hilina Pali excursions are recorded and suggest the global nature of these events. Nevertheless comparison with the Lake Baikal and Biwa records located on the opposite side of the globe in Siberia and Japan respectively reveals a different behaviour at ca. 46000 cal BP in Laguna Potrok Aike and in southern South America, hinting at a non-dipolar origin. In the second chapter, rock-magnetic proxies of dust and wind intensity since 51200 cal BP are constructed. The combined use of rock magnetism and grain size data allowed identifying the median destructive field of the isothermal remanent magnetisation (MDFIRM) as best reflecting silt-sized magnetite typically transported by wind in suspension over short distances. The MDF IRM displays similar variability than other wind intensity proxies derived from marine and lacustrine sediments, peat bug and speleothem records from Patagonia since the last climatic transition and from the Southern Hemisphere since 51200 cal BP. In addition, estimation of the flux of magnetite to the lake, investigation of the grain size influence on magnetic susceptibility and comparison with distal Patagonian dust records from the Southern Ocean and Antarctica indicate that the magnetic susceptibility signal from Laguna Potrok Aike is a dust record at the multi-millennial scale. In the third chapter, rock-magnetic proxies of runoff events associated with extreme precipitation and permafrost melt since 51200 cal BP are presented. The runoff events are identified by the presence of high coercivity magnetic mineral (such as hematite and goethite) which its pedogenic origin is inferred from geological, limnological, stratigraphic and climatic evidence. The runoff events are generally associated with mass movement deposits during time of enhanced lake productivity in Laguna Potrok Aike and are also coeval within the limit of the chronology to warm atmospheric conditions recorded in Antarctica. In addition, we show that the authigenic formation of iron sulfide such as greigite is strictly associated to reworked sands and tephra layers providing the required suboxic conditions and dissolved sulfate. As a whole, rock magnetism of the sediment from Laguna Potrok Aike provides a high quality full-vector paleomagnetic record as well as rock-magnetic proxies of past climate changes in southeastern Patagonia that are also associated with climate changes in Antarctica. Keywords: [Paleomagnetism, sediment magnetism, paleoclimatology, Laguna Potrok Aike, Patagonia, Southern Hemisphere, millennial- to centennial-scale variability, last Glacial period, Holocene, wind intensity].

  19. Propiedades microbiológicas en un suelo de la patagonia argentina bajo la influencia de diferentes especies forestales Microbiological properties of a soil of the argentine patagonia under the influence of different tree species

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    Diana Noemí Effron

    2011-12-01

    Full Text Available En los sistemas forestales, la hojarasca es generalmente la principal fuente de nutrientes para la vegetación y microorganismos, pudiendo variar éstos en relación a la biomasa y calidad de los materiales aportados por diferentes especies. Las raíces de los árboles ejercen influencia en el desarrollo y actividad de la microflora. El objetivo de este trabajo fue evaluar la influencia sobre el suelo de dos especies arbóreas implantadas, con distinta composición del residuo vegetal aportado al suelo. El suelo está clasificado como un Andisol y está ubicado en la Estación Forestal Trevelín, Chubut, Argentina, Lat. 43º Sur, Long 71º31´ Oeste. Se extrajeron muestras superficiales de suelo de dos parcelas de bosque con una especie dominante cada una: Pino radiata (Pinus radiata D. Don. y Roble europeo (Quercus robur. Se determinó carbono orgánico, respiración microbiana, actividad deshidrogenasa, diversidad funcional de comunidades microbianas asociadas y se calculó el índice de diversidad de Shanon Weaver (H. Se cuantificaron bacterias totales, bacterias amilolíticas, actinomicetes y hongos. Los valores de respiración microbiana y carbono orgánico resultaron significativamente superiores en el suelo debajo de Roble. No se encontraron diferencias significativas entre valores de deshidrogenasa. Los recuentos de flora bacteriana total y de bacterias amilolíticas dieron significativamente superiores en el suelo asociado a Roble, mientras que los actinomicetes y hongos no mostraron diferencias significativas entre especies. El análisis de componentes principales mostró variaciones significativas en la fisiología de las comunidades microbianas asociadas a estas dos especies. El índice de diversidad H de la microflora fue significativamente mayor para Pino. Los residuos de Roble por ser una especie latifoliada y por lo tanto poseer menor contenido de sustancias recalcitrantes que una conífera, asociado al mayor desarrollo de bacterias totales y amilolíticas, podría favorecer una mayor descomposición del residuo vegetal aportado al suelo y explicar los mayores valores de carbono orgánico y respiración microbiana obtenidos.In forest systems, leaf litter is usually the main source of nutrients for the vegetation and microorganisms. Leaf litter composition may vary according to the biomass and quality of the materials produced by different species. Tree roots affect the development and activity of microflora. The aim of this study was to evaluate the influence of two implanted tree species, with different composition of plant residues, on the soil characteristics. The soil is classified as an Andisol and is located in the Trevelín Forest Station, Chubut, Argentina, Lat. 43° S, Long 71º31' West. The samples were extracted from the surface soil of two forest plots with a dominant species each: Radiata Pine (Pinus radiata D. Don. and European Oak (Quercus robur. The following analytical determinations were carried out on soil samples: organic carbon, microbial respiration, deshydrogenase activity, microbial count (bacterial communities, amilolytic, actinomyces and fungi as well as the functional diversity of associated microbial communities. The Shannon-Weaver index (H was calculated. The soil under Oak trees showed the highest values of microbial respiration, organic carbon and amilolytic and bacterial community counts. No significant differences were found in deshydrogenase activity, actinomyces and fungi counts between species. The principal component analysis showed significant variations in the physiology of microbial communities associated with these two tree species. The microorganism H diversity index was significantly greater for Pine. Plants residues of broadleaf species such as Oak have lower contents of recalcitrant substances than conifer species, and this fact, associated with the higher development of total and amylolytic bacteria, could result in an increase in the decomposition of plant residues in the soil and in higher organic carbon and microbial respiration values.

  20. Natural sulphate contamination in the multi aquifer system in Santiago del Estero city, Argentine; Contaminacion natural por sulfatos en el sistema multiacuifero de la ciudad de Santiago del Estero, Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Martin, A. P.; Palazzo, R.

    2009-07-01

    The study observed a complex of figures and graphics that reveal the progressive pollution in the pumping wells. Also, it is made a detailed and current review of the underground physics-chemistry evolution, which results justify the importance of finding a real solution to the degradations problem of the aquifers in Santiago del Estero. for that reason, it is strictly necessary to build a total of eleven wells in the recharges zone, so five of them will be diggings 70 m in the gravel wedge (aquifer II) and six wells of 150 m of depth in the margins of the river Dulce. On the other hand, the studies carried out in the area indicate that all the wells will obtain water directly from the river to a direct recharge, so 81% of its flow will be absorb from the river and the rest, 19 % would be taken from the aquifer. This reason will avoid the progressive advance of the saline wedge and there wont harm the chemical quality of the recharge area. The batteries of the wells will supply 1.500.000 L/hour to the interconnected system on the top most potable conditions. (Author) 14 refs.

  1. Acerca de la transitividad de los procesos de comunicación en el discurso económico de divulgación argentino (On the transitivity analysis of communication processes in Argentine economic media discourse

    Directory of Open Access Journals (Sweden)

    Juliana Montarcé

    2014-12-01

    Full Text Available En el marco de la Lingüística Sistémico-Funcional, siguiendo el modelo de Cardiff (Fawcett, 2000, 2008, 2011, en preparación a, en preparación b, abordamos la transitividad de los procesos de comunicación en el discurso económico de divulgación en lengua española. En la gramática de Cardiff, los procesos verbales son concebidos como subconjunto de procesos mentales de cognición y presentan una configuración de tres roles participantes: Agente + Fenómeno + Cognoscente-Afectado. El Agente da información o conocimientos a un Afectado, quien, a partir de ese momento, deviene en Cognoscente, y conoce así un Fenómeno. Se asume que esos tres roles son inherentes a este tipo de procesos, es decir, están exigidos por la semántica de los verbos aunque se encuentren encubiertos y no se realicen en el nivel de la forma (Fawcett, en preparación a, en preparación b. En este trabajo, analizamos una submuestra (50 textos de un corpus propio, denominado DIDIECO (Discurso de Divulgación Económica, compuesto por textos de periódicos argentinos, conformado según postulados de la lingüística de corpus (Biber, 1993; McEnery y Wilson, 2001; Parodi, 2010. Realizamos el análisis sintáctico de todas las cláusulas y analizamos, mediante pruebas de verificación (Fawcett, 2011, los roles participantes requeridos por el proceso y su realización en el plano léxico-gramatical. Con el corpus anotado, nos proponemos así (i establecer criterios de pertenencia a la clase “proceso de comunicación”; (ii evaluar las probabilidades de instanciación de cada uno de los verbos en este tipo de discurso; (iii pormenorizar la red sistémica propuesta por Fawcett, a partir de la concepción del “léxico como una gramática de mayor refinamiento” (Halliday, 1961, y (iv considerar la diversidad de verbos que realizan procesos de comunicación a la luz del discurso en el que se insertan. (In the framework of Systemic Functional Linguistics, in the Cardiff model (Fawcett, 2000, 2008, 2011, forthcoming a, forthcoming b, we explore the transitivity system of communication processes in the economic media discourse in Spanish. In the Cardiff Grammar, verbal processes are conceived as a subset of mental processes of cognition and they have a configuration of three participant roles: Agent + Affected Cognizant + Phenomenon. The participant role Agent gives information or knowledge to an Affected who, thereafter, becomes Cognizant, and so comes to know of some Phenomenon. It is assumed that these three roles are inherent in this process type, i.e., they are required at the level of meaning, even if they are covert and sometimes unrealized at the level of form (Fawcett, in preparation a, in preparation b. In this paper, we analyze a subset (50 texts of a corpus called DIDIECO (Economic Media Discourse, built according to the principles of Corpus Linguistics (Biber, 1993; McEnery & Wilson, 2001; Parodi, 2010. In order to annotate the corpus, syntactic and semantic analysis were made, applying verification tests (Fawcett, 2011 for participants roles. Our main purposes are: (i distinguish criteria to identify members of the class “communication process”; (ii determine the frequency of instantiation of each verb in this kind of discourse; (iii extend in delicacy the system network proposed by Fawcett, based on the concept of “lexis as most delicate grammar” (Halliday, 1961, and (iv consider the diversity of verbs that realize communication processes in the light of the discourse in which they are inserted.

  2. Chemical and functional characterization of seed, pulp and skin powder from chilto (Solanum betaceum), an Argentine native fruit. Phenolic fractions affect key enzymes involved in metabolic syndrome and oxidative stress.

    Science.gov (United States)

    Orqueda, María Eugenia; Rivas, Marisa; Zampini, Iris Catiana; Alberto, María Rosa; Torres, Sebastian; Cuello, Soledad; Sayago, Jorge; Thomas-Valdes, Samanta; Jiménez-Aspee, Felipe; Schmeda-Hirschmann, Guillermo; Isla, María Inés

    2017-02-01

    The aim of this work was to assess the nutritional and functional components of powder obtained by lyophilization of whole fruits, seeds, pulp and skin from chilto (Solanum betaceum Cav) cultivated in the ecoregion of Yungas, Argentina. The powders have low carbohydrate and sodium content and are a source of vitamin C, carotenoid, phenolics, potassium and fiber. The HPLC-ESI-MS/MS analysis of the fractions enriched in phenolics allowed the identification of 12 caffeic acid derivatives and related phenolics, 10 rosmarinic acid derivatives and 7 flavonoids. The polyphenols enriched extracts before and after simulated gastroduodenal digestion inhibited enzymes associated with metabolic syndrome, including α-glucosidase, amylase and lipase and exhibited antioxidant activity by different mechanisms. None of the analyzed fruit powders showed acute toxicity or genotoxicity. The powders from the three parts of S. betaceum fruit may be a potential functional food and the polyphenol enriched extract of seed and skin may have nutraceutical properties.

  3. A return to the ‘pretty house’. An interpretative bricolage of documentary sources on menarche rituals among the native peoples of the Argentine Patagonia (nineteenth and twentieth centuries

    Directory of Open Access Journals (Sweden)

    Graciela Hernández

    2015-12-01

    Full Text Available The main aim of this work is to put into consideration a new analysis of the text by the British author George Musters, of his description of a menarche ceremony (which he called “the pretty house” that was observed among the Tehuelches from the Patagonia in 1869, in order to contextualize it from the historic point of view and from a gender perspective.From qualitative methodology we have made a bricolage which expresses an itinerary articulated by a genealogy of documentary sources from the nineteenth century, by testimonies produced in anthropological and linguistic works in the second half of the twentieth century, and by ethnographic records of our works in oral history which focus on rituals to foster the yarns.The comparison of sources of the selected documents leads us to think about the hypothesis that in the ceremonies of the first menstruation, from the nineteenth century on, it was fostered the attachment to yarns and fabric, in societies which also ritualized the field of textile work.

  4. Regulatory activities related with the modification of the frequency of the programmed stoppings of the Argentine nuclear centrals; Actividades regulatorias relacionadas con la modficacion de la frecuencia de las paradas programadas de las centrales nucleares argentinas

    Energy Technology Data Exchange (ETDEWEB)

    Marino, E.; Calvo, J.; Waldman, R.; Navarro, R

    2006-07-01

    The mandatory character documentation of the Argentinean nuclear power stations in Embalse and Atucha I, required the realization of a programmed stoppings every twelve months to execute that settled down in the maintenance and surveillance programs for each installation. Nucleoelectrica Argentina S.A., in it character of Responsible Entity of the operation of these power stations, requested to the Argentinean Nuclear Regulatory Authority, in 2003 and 2005 respectively, the authorization to change the period of the repetitive tests and of the preventive maintenance of the systems related with the safety, to extend them from twelve to eighteen months. The mentioned applications were founded in economic aspects and in inclining to a decrease in the doses of the workers that perform in the activities that are carried out in the programmed stops. The adopted position by the Nuclear Regulatory Authority to decide on these applications was based on the result of diverse evaluations that included the use of the Probabilistic Analysis of Safety specific of each power station, the operative experience resultant of the execution of the preventive maintenance program, and of the results of the repetitive tests and of the inspections in service. The regulatory decisions were different in each case. Indeed, the Embalse nuclear power station was authorized by the Regulatory Authority to modify from twelve to eighteen months the period among the realization of the repetitive tests and of the preventive maintenance, conditioned to the execution of some specific regulatory requirements. On the other hand, the Atucha I nuclear power station was not authorized to modify this period. In this presentation that is detailed the acted by the Nuclear Regulatory Authority in both cases, the used analysis tools, and the foundation of the adopted decisions. (Author)

  5. Más allá de la cultura: validación de un modelo multidimensional de autoconcepto en adolescentes argentinos (Beyond culture: Validation of a multidimensional model of self-concept among Argentine adolescents

    Directory of Open Access Journals (Sweden)

    Alejandra Daniela Calero

    2016-04-01

    Full Text Available It has been shown that self-concept and self-esteem are key constructs to explain adolescent development. One of the most well-known models of this stage of development comprises eight specific self-concept domains and another domain, representing general self-esteem, with a higher level of abstraction. This theoretical model is operationalized by the Self-Perception Profile for Adolescents (SPPA. The aim of this study was to statistically test the theoretical structure of the SPPA in an adolescent population of the City of Buenos Aires, Argentina (CABA/AR. The SPPA was administered to 467 adolescents attending a middle school in CABA/AR. A confirmatory factor analysis (CFA was used to contrast the proposed theoretical structure; two alternative models of the self-concept domain and one model of the self-esteem domain were tested. The results confirmed the proposed theoretical structure of the SPPA in adolescent population attending the CABA/AR.

  6. The local scale, from the periphery. An analysis of the agriculture machinery industry in Las Parejas (province of Santa Fe, Argentina, in connection withits its context in the Argentine economy

    Directory of Open Access Journals (Sweden)

    Patricio Narodowski

    2007-01-01

    Full Text Available This paper looks into the possibilities that local development strategies inspired in the reality of European countries may be applied to peripheral countries such as Argentina. A difference is made between a global/national context and a local one. the analysis takes into account geographical, sociological and economic discourses which, considering the Italian and French experience, among others, relativize the national scale as the axis of analysis and focus on the local birth as scale of reference. The agricultural machinery businesses of Las Parejas, in the province of Santa Fe, are used to exemplify how a medium-sized city can generate associative projects which help actors to deal with the context, though this is still a business performance and local productive networks life variable.

  7. Transformations in the Argentine dairy sector. The "mediería"as work social form Transformaciones en el Complejo Lácteo Argentino. La mediería como forma social de trabajo

    Directory of Open Access Journals (Sweden)

    Florencia Beltrame

    2010-01-01

    Full Text Available The transformations of the dairy sector and rural social structure in Argentina have been taking place along the last decades. This process meant a profound restructuring of the pampas region. Throughout this work, we will see how the processes of technological change and restructuring resulted in a transformation of the "mediería" as a social and labor relation. It means, the relations of "mediería" had transformed according to the new requirements of the dairy production clusters. In summary, in this work we will discuss the transformations of the labor organization in the dairy sector in Argentina as a result of the modernization processes.El complejo lácteo argentino y la estructura social rural en su conjunto, han experimentando importantes transformaciones en las últimas décadas, llevando a una profunda reestructuración del agro pampeano. A lo largo del presente trabajo, veremos cómo los procesos de cambio tecnológico y reestructuración de la actividad, tuvieron como consecuencia no el reemplazo o desplazamiento, sino más bien la transformación de la figura de la mediería como forma social del trabajo. Ésta última, debió transformarse de acuerdo a los nuevos requerimientos del sistema alimentario. De esta forma, analizaremos la forma que adquirió la organización del trabajo en el complejo lácteo como consecuencia de los procesos de modernización.

  8. CARACTERIZACIÓN DE CONCENTRADOS DE COBRE PRODUCIDOS EN ARGENTINA PARA ANALIZAR LA FACTIBILIDAD DE LA INSTALACIÓN DE UNA PLANTA PIROMETALÚRGICA CHARACTERIZATION OF THE ARGENTINE COPPER CONCENTRATES TO EVALUATE THE POSSIBILITY OF A PIROMETALLURGY INDUSTRY INSTALLATION

    Directory of Open Access Journals (Sweden)

    Vanesa Bazán

    2010-12-01

    Full Text Available La demanda mundial de cobre metálico se incrementó sensiblemente durante estos últimos años debido a los mercados emergentes y a China en particular. Actualmente en Argentina los proyectos mineros de explotación de cobre qeue se desarrollan en el norte del país concluyen su proceso con la exportación de concentrados. En nuestro país se han realizado diferentes exploraciones y en algunos casos ya están en explotación minerales de alta ley de cobre (0,5% - 0,8% libres de impurezas tales como: Sb, As, Pb, Bi y Hg. Esto indicaría que hay un gran futuro de la pirometalurgia del cobre que no se ha desarrollado aquí hasta el momento. Las condiciones del mercado argentino de cobre generan una demanda insatisfecha del metal, ya que existen plantas transformadoras de cobre metálico a productos terminados provocando una nueva importación de productos intermedios de cobre. Este trabajo propone profundizar el conocimiento y ampliar el espectro de los fundamentos técnicos con el objetivo de cubrir ese espacio del mercado. Esto puede promover que los grandes proyectos cupríferos superen la instancia de exportar concentrados proporcionando esta materia prima a una industria metalúrgica nacional que produzca cobre metálico, y de este modo evitar que se importe dicho insumo y de esta manera se satisfaga el mercado interno.The copper demand in the world has considerably increased during the last years due to the emergent markets, particularly the Chinese market. Nowadays, the mining projects for copper exploitation that are being developed in the North of Argentina conclude with the concentrates exports. In our country different explorations have been carried out and in some cases high law of copper minerals are being exploited (0,5% - 0,8%. These minerals are free from impurities such as: Sb,As,Pb,Bi and Hg. This would lead to think that there are good prospects for the copper pyrometallurgy that have not been developed yet in our country. The conditions for the Argentinean copper market present and unfulfilled demand for this metal, since there are industrial plants which convert metallic copper into final products leading to a new copper intermediate product import. This paper proposes to deepen the knowledge and to broaden the range of technical principles with can avoid exporting concentrates and instead it can provided raw material to a national metallurgical industry in order to produce metallic copper so that the domestic market will be supplied, thus importing raw material will no longer be necessary.

  9. Proceedings, Annual Meeting, Aquatic Plant Control Research Program (17th) Held at Sacramento, California on 16-18 November 1982.

    Science.gov (United States)

    1983-06-01

    as the major cause of the waterhyacinth reduction in Louisiana. c. Sameodes albiguttalis. Although S. albiguttalis ( Argentine waterhyacinth moth) is a...fungus endemic to the United States. b. Sameodes albiguttali-the Argentine waterhyacinth moth imported from South America. c. Neochetina bruchi-The...including S. albiguttalis larvae, weevil adults and larvae, pickerelweed borer larvae, water- hyacinth mites, spider mites, various pathogens, frosts

  10. "Who Is It that Can Tell Me Who I Am?" The Quest for Ethnicity in the Anglo Communities of Buenos Aires.

    Science.gov (United States)

    Cortes-Conde, Florencia

    2003-01-01

    Examines discourse on the communal identity that accompanies language shift processes, focusing on an Anglo-Argentine population. A questionnaire was administered to this population concerning what makes an Anglo-Argentine different from either of its perceived component identities. (VWL)

  11. A novel recombinant variant of latent membrane protein 1 from Epstein Barr virus in Argentina denotes phylogeographical association

    Science.gov (United States)

    Gantuz, Magdalena; Lorenzetti, Mario Alejandro; Chabay, Paola Andrea

    2017-01-01

    Epstein Barr virus (EBV) infection in Argentina occurs at an early age and occasionally develops infectious mononucleosis (IM). EBV is also related with lymphomas. LMP1, the viral oncoprotein is polymorphic and is used to define viral variants. Aim To study LMP1 variants distribution among children with EBV+ malignant and benign conditions as well as in healthy carriers. Methods Oral secretions and blood cells from 31 children with IM, and biopsies from 14 EBV+ reactive lymphoid hyperplasia and 33 EBV+ lymphomas were included. LMP1 was amplified by nested PCR and sequenced. Phylogenetic reconstructions were made under Maximun Likelihood, Bayesian and coalescent algorithms. Results Six clades were defined (China1, China2, Med-, Alaskan, B95.8 and Argentine). Argentine variants, the most prevalent (46%), harbored 3 distinctive mutations and were a recombination between Raji and China1. Despite no pathology or compartment associations were observed for LMP1, the Argentine clade showed a phylogeographic association with our region. LMP1 estimated evolution rate was 8.591x10-5s/s/y and the estimated tMRCA for Raji and Argentine was 136ybp. Conclusions An LMP1 Argentine clade was defined. LMP1 evolutionary rate was higher than expected for herpesviruses. The tMRCA for Raji and the Argentine agrees with African immigration and could explain the recombinant nature of the Argentine variant. PMID:28328987

  12. Il viaggio in rete: i blogs dei nuovi migranti italiani in Argentina

    Directory of Open Access Journals (Sweden)

    Luciano Gallinari

    2012-06-01

    Full Text Available Using methodologies of the social sciences, this paper attempts to trace an overview of the Argentine-Italian relations - especially as regards the various aspects of identity - in the period between the Centenary of the Revolución de Mayo (1919 and today, with the support of three types of sources: travel reports written by Italians; articles of Italian, Argentine and Italian-Argentines newspapers, and finally data from websites and blogs of private Italian citizens, which in recent years have planned and, in some cases, even accomplished a new migration to Argentina.

  13. Horizontal and vertical individualism and collectivism among college students in the United States, Taiwan, and Argentina.

    Science.gov (United States)

    Chiou, J S

    2001-10-01

    Among college students in the United States, Taiwan, and Argentina, the author examined the strength of 4 cultural patterns (horizontal collectivism, vertical collectivism, horizontal individualism, vertical individualism; H. C. Triandis, 1995). A 3-group confirmatory factor analysis established the measurement equivalence among the 3 samples before the comparison. The Taiwanese and the Argentine samples were more vertically collectivist than the U.S. sample. The U.S. and the Taiwanese samples were more vertically individualistic than the Argentine sample. The U.S. sample was more horizontally individualistic than the Argentine sample, which, in turn, was more horizontally individualistic than the Taiwanese sample.

  14. NPP atucha I. 40 years of commercial operation of the heavy-water reactor in Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Mazzantini, Oscar A. [Nuclearelectrica Argentina SA, Atucha (Argentina); Fabian, Hermann O.

    2014-08-15

    The nuclear power plant (NPP) Atucha I in Argentina - a heavy-water reactor with pressure vessel technology operated with natural uranium - accomplished a remarkable anniversary on 26 June 2014: 40 years of commercial operation. State-run Nucleoelectrica Argentina SA (NA SA), being today the plant owner and operator commemorated this anniversary, as only few NPP exist which can refer to such long operating time with good performance. With a limited operating licence to 40 years (or rather 32 full load years) by the National Atomic Energy Agency (Comision National de Energia Atomica/CNEA) the plant had been handed over to CNEA on 24 June 1974 by the general contractor, Siemens AG, after release of the works contract on 1. June 1968. The site is located to the north-west of Buenos Aires upstream on the Rio Parana. The plant has an output of 345 MW; it has been continuously, reliable and successfully operated. Atucha I supplied overall 82.4 TWh of electricity into the national grid (220 kV) with an integral operating availability of 76.5 %.

  15. Integrated ageing management of Atucha NPP

    Energy Technology Data Exchange (ETDEWEB)

    Ranalli, Juan M.; Marchena, Martin H.; Zorrilla, Jorge R.; Antonaccio, Elvio E.; Brenna, Pablo; Yllanez, Daniela; Cruz, Gerardo Vera de la; Luraschi, Carlos, E-mail: ranalli@cnea.gov.ar [Gerencia Coordinacion Proyectos CNEA-NASA, Comision Nacional de Energia Atomica, Buenos Aires (Argentina); Sabransky, Mario, E-mail: msabransky@na-sa.com.ar [Departamento Gestion de Envejecimiento, Central Nuclear Atucha I-II Nucleoelectrica Argentina S.A., Provincia de Buenos Aires (Argentina)

    2013-07-01

    Atucha NPP is a two PHWR unit site located in Lima, Province of Buenos Aires, 120 km north of Buenos Aires, Argentina. Until recent, the site was split in Atucha I NPP, a 350 MW pressure vessel heavy water reactor in operation since 1974; and Atucha II, a similar design reactor, twice as big as Atucha I finishing a delayed construction. With the start-up of Atucha II and aiming to integrate the management of the plants, the Utility (Nucleolectrica Argentina Sociedad Anonima - NASA) has reorganized its operation units. Within this reorganization, an Ageing Management Department has been created to cope with all ageing issues of both Atucha I and II units. The Atomic Energy Commission of Argentina (Comision Nacional de Energia Atomica - CNEA) is a state-owned R and D organization that; among other functions such as designing and building research reactors, developing uranium mining and supplying radioisotopes to the medical market; is in charge of providing support and technological update to all Argentinean NPPs. The Ageing Management Department of Atucha NPP and the Ageing Management Division of CNEA has formed a joint working group in order to set up an Integrated Ageing Management Program for Atucha NPP following IAEA guidelines. In the present work a summary of the activities, documental structure and first outputs of the Integrated Ageing Management Program of Atucha NPP is presented. (author)

  16. Crítica a la ceguera de las bibliotecas argentinas por la exclusión social de la comunidad GLTTIBQ (gay, lésbica, transexual, travesti, intersexual, bisexual, queer)

    OpenAIRE

    Díaz-Jatuf, Julio

    2015-01-01

    Criticizes the current situation of Argentine libraries socially excluded specialized library services to the community GLLTIBQ in order to promote and strengthen the social inclusion of the community in them.

  17. Soomlased ajendasid Uruguay ja Argentina vahelise tselluloositüli / Heiki Suurkask

    Index Scriptorium Estoniae

    Suurkask, Heiki, 1972-

    2006-01-01

    Argentiinlased protestivad Uruguay jõe Uruguay-poolsel kaldal ehitavate tselluloositehaste vastu, ehitustööd mõistis hukka ka president Nestor Kirchner. Tehased rajab Soome kontsern Metsä-Botnia. Lisa: Argentinal endal keskkonnale ohtlikud tehased

  18. 76 FR 17407 - Proposed Subsequent Arrangement

    Science.gov (United States)

    2011-03-29

    ... testing of plate- type nuclear fuel as part of a Reduced Enrichment for Research and Test Reactors (RERTR... and the Argentine Republic Concerning Peaceful Uses of Nuclear Energy. DATES: This subsequent..., Office of Nonproliferation and International Security, National Nuclear Security...

  19. El rol del bibliotecario en las donaciones de fondos de particulares: el caso Miguel Niels Tarzia (1929-2008)

    OpenAIRE

    Díaz-Jatuf, Julio

    2012-01-01

    It presents a practical experience in managing the donation of the relatives of Argentine lawyer Miguel Tarzia Niels (1929-2008). We present theoretical concepts and professional recommendations are suggested exemplified through a case.

  20. [Bioethics in the new Argentinian Civil and Commercial Code].

    Science.gov (United States)

    Bergel, Salvador Darío

    2015-01-01

    Argentine has a new Civil and Commercial Code that will enter into force in August. This Code contains a series of rules relating to bioethics that have served to illustrate a brief comment on its contents.

  1. Fisicos argentinos reproduciran el Big Bang

    CERN Multimedia

    De Ambrosio, Martin

    2008-01-01

    Two groups of argentine physicists from La Plata and Buenos Aires Universities work in a sery of experiments who while recreate the conditions of the big explosion that was at the origin of the universe. (1 page)

  2. Model to the evolution of the organic matter in the pampa`s soil. Relation with cultivation systems; Modelizacion de la evolucion de la materia organica de los suelos de la Pampa. Relacion con los sistemas de cultivo

    Energy Technology Data Exchange (ETDEWEB)

    Andriulo, Adrian [INTA-EEA Pergamino, Pergamino (Argentina); Mary, Bruno; Guerif, Jerome [INRA. Unite d` Agronomie de Laon, Laon (France); Balesdent, Jerome [INRA. Laboratoire de Biogeochimie Isotopique, Paris (France)

    1996-08-01

    The objective of the work is to present a model to describe the evolution of the organic matter in soils of the Argentine`s pampa. This model can be utilised to evaluate the evolution of the soil`s fertility in the agricultural production at this moment. Three kinds of assay were done. The determination of organic carbon made possible to prove the Henin-Dupuis model and a derived model

  3. Documentation for delivery of Star Tracker to SAC-C

    DEFF Research Database (Denmark)

    Kilsgaard, Søren; Thuesen, Gøsta; Riis, Troels;

    1999-01-01

    The documentation EIDP (End Item Data Package) describes all the tests which have been performed on the flight hardware of the Star Tracker for the Argentine, Danish and NASA satellite SAC-C.......The documentation EIDP (End Item Data Package) describes all the tests which have been performed on the flight hardware of the Star Tracker for the Argentine, Danish and NASA satellite SAC-C....

  4. Presencia y usos de Facebook en las bibliotecas populares de La Plata, Berisso y Ensenada (Argentina)

    OpenAIRE

    Laudano, Claudia Nora; Corda, María Cecilia; Planas, Javier; Kessler, María Inés; Aracri, Alejandra

    2016-01-01

    Presence and uses of Facebook in popular libraries of La Plata, Berisso and Ensenada (Argentine). This paper analyzes the uses of he social network Facebook by popular libraries in La Plata, Berisso and Ensenada (Argentine). After a bibliographic review on the subject, we expose the methodological procedures employed to identify which institutions have an account on this social network and then the main uses they make of the tool in question. The uses by the libraries are analyzed according ...

  5. Proceedings of the Annual Meeting, Aquatic Plant Control Research Program (18th) Held at Raleigh, North Carolina on 14-17 November 1983.

    Science.gov (United States)

    1984-06-01

    weevil . Sameodes albiguttalis - the Argentine waterhyacinth moth * Cercospora rod man ii - the w aterhyacinth leaf-spot fungus Findings Waterhyacinth...Hustache), and the Argentine waterhyacinth moth (Sameodes albiguttalis Warren). Biological control agents have not been extensively employed in Texas...appeared to increase and spider mites began to occur more frequently between 1979 and 1980. These factors coupled with stress from drought in spring and

  6. Campaigning

    Science.gov (United States)

    1997-08-01

    to lower, in fact the command struc- ture is often more like a spider web: a tug at any point may have an impact throughout the structure...Strategy. the Argentine mainland or to overthrow its government in order to recover the disputed islands. In the area of operations, how- ever, the...British isolated and annihilated the Argentine forces. Strategies of annihilation have the virtue of conceptual sim- plicity. The focus of our

  7. Movilización de información en el Ordenamiento Territorial de Bosques Nativos de Argentina. : La heterogeneidad de los mapeos provinciales y la institucionalización de la problemática ambiental

    OpenAIRE

    2014-01-01

    In this paper we propose a geographical analysis highlighting the social and political role of environmental information in the implementation of complex legal systems aimed at regulating the advance of the agricultural frontier in South America; we present a case-study focusing on the Argentine Law on Forests ("Ley de Bosques") of 2007. In order to curb deforestation, this law requires every Argentine province to draw a native forest land planning map ("OTBN") classifying forests according t...

  8. JPRS Report, Science & Technology, Europe & Latin America, Argentina: Specifications of ARGOS 380 MW Reactor.

    Science.gov (United States)

    1988-02-18

    in the market. ENACE the Empresa Nuclear Argentina dc Ccntralcs Flöctricas, or Argentine Nu- clear Power Plant Corporation is stepping out into the...and economy in operation. ENACE is an acronym for Empresa Nuclear Argentina de Centrales Electricas, or Argentine Nuclear Power Plant Corporation...de Energia Atömica; Buenos Aires, Argentina. Consejo Aso- sor para el Licenciamiento do Instalaciones Nucleares. "Criterios generales de seguridad en

  9. Políticas editoriales e impacto cultural en la Argentina: 1880-2000 Publishing policies and their cultural impact in Argentina: 1880-2000

    Directory of Open Access Journals (Sweden)

    Amelia Aguado

    2006-12-01

    Full Text Available En el proyecto de investigación reseñado, se estudia la evolución de la industria editorial en Argentina, desde 1880 a 2000, y se analiza su impacto cultural, con particular énfasis en la literatura argentina.In the research project reviewed, the evolution of the edition industry in Argentine, from 1880 to 2000, is studied and its cultural impact is analyzed, with particular enphasis in Argentine literature.

  10. fragmentation of knowledge processes and institutional knowledge: The Case of the Argentine Research and Teaching (1989-2003) Prebendarismo Y Faccionalismo En La Institucionlización Del Conocimiento: El caso de la Investigación y la Docencia Argentinas (1989-2003)

    OpenAIRE

    Eduardo R. Saguier

    2004-01-01

    The study of the centralizing mechanisms of academic power that very often work to obstruct and boycott individual and collective demands to produce critical knowledge, as well as impose circuits or networks made of multiple and combined knots (clientelism, nepotism, careerism and ethnocentric, sectarian and nepotic reciprocities), must necessarily go to their historical origins, analyzing several phenomena such as the coloniality of power, the subordination to a geopolitical and socio-techno...

  11. Ingenieros del alma: los informes sobre canción popular, ensayo y Ciencias Sociales de los servicios de inteligencia de la dictadura militar argentina sobre América Latina Engineers of the soul: reports from the Argentine military dictatorship's intelligence services on Latin American popular song, essays, and the social sciences

    Directory of Open Access Journals (Sweden)

    Patricia Funes

    2007-12-01

    Full Text Available El artículo se propone reconstruir y analizar los informes de los servicios de inteligencia sobre la producción acerca de América Latina durante la última dictadura militar argentina (1976-1983. Partimos de la hipótesis que el concepto "América Latina" es connotado a priori como "subversivo, "comunista", "revolucionario". Lo anterior podría explicar la profusión de informes de inteligencia sobre las ciencias sociales latinoamericanas de los años sesenta y setenta, así como también los centros de estudio, las revistas, e incluso la canción popular encontrados en el Archivo de la ex Dirección de Inteligencia de la Policía de la Provincia de Buenos Aires [DIPBA], fondo privilegiado para la reconstrucción sobre las formas y significados de la construcción de la categoría "delincuente subversivo" por parte de los servicios de inteligencia sobre el campo cultural argentino.The paper aims to trace, to reconstruct and to analyze the records of the Intelligence Services regarding the production of Latin-American social sciences in the period 1976-1983. The object "Latin America" is to the services of intelligence a priori associated with and connoting "communist", "revolutionary" or "subversive". All the above led to an exhaustive work of exegesis and research on the production of Latin-American Social Sciences describing a double process: introducing professionalism in politics and political radicalization. The documents found in the Archive of the former Direction of Intelligence of the Police of the Province of Buenos Aires [DIPBA] -(containing reports of other services of intelligence allow to infer the importance and the degree of "danger" that the dictatorships attributed to this production. This research will analyze reports issued by Intelligence Offices on popular music, essays and, particularly, classic works produced by Latin American Social Sciences.

  12. Efecto de distintas alternativas de fertilización fosfatada en la secuencia trigo - soja sobre el fósforo asimilable y los rendimientos en la provincia de Tucumán, Argentina Effect of different phosphorus fertilization alternatives on available soil phosphorus concentration and yields in a soybean - wheat cropping system in Tucumán, Argentine

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    Carlos F. Hernández

    Full Text Available Se evaluaron 10 alternativas de fertilización fosfatada en la secuencia soja - trigo, en la localidad de La Ramada de Arriba (departamento Burruyacú, provincia de Tucumán. Dicho estudio se llevó a cabo sobre un suelo Argiudol típico con 3,5% de materia orgánica y 7,8 ppm de fósforo (P -Bray 1. El objetivo fue determinar la influencia de cada alternativa de fertilización sobre el contenido de P disponible en dos espesores de suelo, 0 -5 cm y 0 -25 cm, a través de cinco años de evaluación (desde 2002 a 2007. Además, se determinó la incidencia de la fertilización fosfatada sobre los rendimientos culturales de la soja en las dos últimas campañas (2006 y 2007, y del trigo en 2005. Los tratamientos evaluados fueron: tres correspondientes a tres dosis de P (30, 45 y 60 kg/ha de P2O5 como superfosfato triple de calcio (SPT, suministradas solo en soja; tres correspondientes a esas mismas dosis, pero aplicadas al trigo, y finalmente tres que incluyeron las mencionadas dosis de P, aunque aplicadas a ambos cultivos. Completó la grilla de tratamientos un testigo absoluto al cual no se añadió P. El efecto residual del P se evidenció en ambos cultivos con el agregado de 45 kg/ha de P2O5. Solo las dosis de 45 y 60 kg/ha de P2O5, en los sistemas de doble aportación, lograron elevar la disponibilidad de P por encima de 13 ppm (nivel de suficiencia en soja, logrando además la mayor eficiencia del P residual. Los rendimientos de la soja fueron superiores en las aplicaciones directas de P, respecto del efecto residual proveniente de dosis equivalentes añadidas al trigo. También, la mayor eficiencia del P se determinó en los sistemas de aportación simple cuando el P se suministró en forma directa al cultivo correspondiente.Ten phosphorus fertilization alternatives were evaluated in a soybean-wheat cropping system in La Ramada de Arriba (Burruyacú, Tucumán province. The study was carried out on a Typic Argiudoll, with 3.5% organic matter and 7.8 ppm phosphorus (P-Bray 1. The objective of this trial was to estimate the effect of each fertilization alternative on available phosphorus concentration in two soil layers, 0-5 cm and 5-25 cm, over five years (from 2002 to 2007, and on soybean and wheat yields. Evaluated treatments consisted in applying 30, 45 and 60 kg P2O5/ha as triple superphosphate yearly only to soybean, only to wheat and to both crops. P residual effect was found for both crops when 45 kg P2O5/ha was applied. Available soil phosphorus concentration increased over 13 ppm (critical P-Bray 1 concentration for soybean when 45 and 60 kg P2O5/ha rates were applied to both crops, reaching at the same time the highest residual phosphorus uptake efficiency. Soybean yields were higher when P was applied to soybean, as compared to wheat treated with the same P rates. Soybean highest P uptake efficiency was found when P was applied to soybean.

  13. Genetic data on nine STRs (CSF1PO, TPOX, THO1, F13AO1, FESFPS, vWA, D16S539, D7S820 and D13S317) and two VNTRs (D1S80 and D17S5) in Rosario population, Santa Fe Argentine.

    Science.gov (United States)

    Tenaglia, Mariano; Scollo, Adriana; Tripaldi, Regina; Grappiolo, Irene; Perichón, Armando M

    2004-05-10

    Allele frequencies for nine short tandem repeats (STRs) loci (CSF1PO, TPOX, THO1, F13AO1, FES/FPS, vWA, D16S539, D7S820 and D13S317) and two variable number tandem repeats (VNTRs) were obtained from a sample of 270 unrelated individuals born in the Rosario city, Santa Fe province of Argentina.

  14. Poder calorífico superior de bagazo, médula y sus mezclas, provenientes de la caña de azúcar de Tucumán, R. Argentina Calorific value of sugarcane bagasse, pith and their blends (Tucumán, Argentine Republic

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    Oscar A. Diez

    Full Text Available En Tucumán, el principal combustible empleado para generar el vapor necesario para la fabricación de azúcar a partir de caña es el residuo fibroso (bagazo resultante de la extracción del jugo. En algunas fábricas donde existe la posibilidad de desmedular bagazo para la entrega de fibra a la producción de papel, coexisten junto al bagazo, médula y mezclas de bagazo y médula en diferentes proporciones, como combustible disponible. La calidad del bagazo como combustible varía en función de factores ecológicos, agronómicos e industriales, y es determinante en la eficiencia del proceso de generación de vapor. El objetivo de este trabajo fue evaluar la calidad como combustible del bagazo que se utiliza industrialmente. Un total de 419 muestras de bagazo obtenidas en distintos ingenios de la provincia de Tucumán durante la zafra 2004, fueron procesadas y ensayadas en bomba calorimétrica para obtener el valor del poder calorífico superior (PCS y la incidencia del contenido de cenizas sobre el valor final de PCS. A fin de identificar la influencia del contenido de cenizas en el retardo del encendido del combustible, se calcularon los valores de PCS al minuto de iniciado el encendido en la bomba calorimétrica. El espectro analítico se completa con determinaciones de PCS en bagazo de tres variedades de caña de amplia difusión comercial. Los resultados obtenidos indicaron que es aconsejable utilizar 17.375 kJ/kg como valor promedio de PCS en el bagazo de caña en base seca, que se industrializa en Tucumán. Para la médula como combustible, se puede utilizar 17.075 kJ/kg como tal valor. Estos valores son ajustables de acuerdo al contenido de cenizas. Si bien los valores promedio obtenidos muestran baja dispersión, resultó posible identificar la incidencia del ecosistema en el desarrollo de la caña de azúcar, el cual condiciona el contenido final de fibra y, consecuentemente, su poder calorífico.Bagasse, or the biomass remaining after sugarcane stalks are crushed to extract their juice, is the primary fuel source for steam generation to supply for all the needs of a typical sugar mill in Tucumán, Argentina. In factories equipped to separate bagasse from pith to supply fibre for paper producing plants, pith and its blends with bagasse at different proportions are also available as fuels. The value of bagasse as a fuel depends on a number of ecological, agronomic and industrial factors, and it affects steam generation efficiency. The aim of this report is to assess the value of bagasse as a fuel in sugar mills in Tucumán. A total of 419 bagasse samples, collected from different sugar mills in Tucumán, were processed and tested with a bomb calorimeter to measure their higher calorific value (PCS and its correlation with ash contents. In order to identify the relationship between ash content in bagasse and its ignition delay, PCS was calculated one minute after ignition. Bagasse PCS from three widely used sugarcane varieties was also determined. Results showed that 17375 kJ/kg is eligible as a mean higher calorific value for bagasse from sugar mills in Tucumán, whereas pith mean higher calorific value can be set at 17.075 kJ/kg. These values should be adjusted according to ash content level. Although variability amongst mean PCS was low, it was possible to identify the relationship between ecosystem and sugarcane development, its final fibre content and, thereby, its calorific value.

  15. “CRUZADA NACIONALISTA” Y PERIODISMO: LA REVISTA ‘CABILDO’ ANTE EL ESCENARIO MEDIÁTICO ARGENTINO (1973-1976 “Nationalistic Crusade” and journalism: The magazine ‘Cabildo’ before the media scene in argentine (1973-1976

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    Patricia A Orbe

    2012-12-01

    Full Text Available En el presente artículo se lleva a cabo el análisis del discurso de las revistas nacionalistas católicas Cabildo, El Fortín y Restauración en torno a un conjunto de medios de comunicación y determinadas personalidades ligadas a ellos, los cuales operaban en Argentina durante el tercer gobierno peronista (1973-1976. Este trabajo se concentra en el estudio de las modalidades de autorrepresentación y de representación de estos “otros” como rivales, adversarios o enemigos, mediante las contribuciones de los estudios sobre prensa en combinación con los de la Sociolingüística Histórica y el Análisis Crítico del Discurso.The article carries out the analysis of the discourse of the nationalistic catholic magazines Cabildo, El Fortín and Restauración concerning a set of materials from the mass media and certain personalities tied to them, which were operating in Argentina during the third peronist government (1973-1976. This work is centered on the study of the modalities of self-representation and the representation of these "others" as rivals, adversaries or enemies, by means of the contributions of the studies on print media in combination with those of the Sociohistorical Linguistics and the Critical Discourse Analysis.

  16. Colonización radical por endófitos fúngicos en Trithrinax campestris (Arecaceae de ecosistemas semiáridos del centro de Argentina Root colonization by fungal endophytes in Trithrinax campestris (Arecaceae from semiarid ecosystems from Central Argentine

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    Mónica A Lugo

    2011-12-01

    Full Text Available En ecosistemas áridos y semiáridos las raíces de las plantas suelen formar simbiosis con hongos, los que les proporcionan nutrientes y agua. Poco se conoce sobre los hongos asociados a palmeras nativas y cómo éstos podrían estar relacionados entre ellos. Se describe y cuantifica la colonización radical de los simbiontes de Trithrinax campestris en poblaciones leve y fuertemente afectadas por el fuego. T. campestris fue colonizada por hongos micorrícico-arbusculares (HMA y endófitos septados oscuros (ESO. La colonización por HMA fue del tipo intermedio entre los tipos Arum y Paris. La colonización por HMA y ESO y la producción de pelos radicales, presentó diferencias entre las poblaciones estudiadas. Los resultados sugieren que en T. campestris la relación entre hongos simbiontes/producción de pelos radicales podrían estar relacionada con su alta tolerancia al fuego y la aridez.In arid and semiarid ecosystems, roots frequently form symbiosis with fungi that provides access to nutrients and water. Knowledge regarding the study of fungal symbionts colonizing native palms roots is still scarce. We described, quantified and compared fungal colonization in roots of Trithrinax campestris from two environmental situations: population with weak-burning-signs and population with strong-burning-signs. T. campestris was colonized by arbuscular-mycorrhizal-fungi (AMF and dark-septate-endophytes (DSE. AMF colonization was an intermediate type between Arum and Paris. The AMF and DSE colonization and root hair production differed between populations. Our results suggest that in T. campestris the relation between fungal-symbionts and root-hair-production might be related to tolerance to burning and aridity.

  17. Conocimiento sobre melanoma y prácticas de protección frente al sol en pacientes del Hospital Cullen de Santa Fe, Argentina Knowledge of melanoma and sun-protective practices in patients at José M. Cullen Hospital of Santa Fe, Argentine

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    A Loza

    2011-09-01

    Full Text Available Introducción. Melanoma es un cáncer de piel de mortalidad alta, cuya incidencia ha aumentado mundialmente en los últimos años. El siguiente estudio está destinado a detectar el conocimiento de la población sobre melanoma y las medidas de protección frente a la radiación UV (RUV, considerando que las dos terceras partes de los casos de melanoma se asocian al sol. Objetivo general. Detectar el conocimiento sobre melanoma y las prácticas de protección solar, en pacientes que consultan en el Servicio de Dermatología e internados en Clínica Médica del Hospital José M. Cullen. Materiales y métodos. Estudio observacional, prospectivo, longitudinal y descriptivo. La población abarcó 275 pacientes, entre 16 y 85 años, voluntarios del consultorio de Dermatología e internados en Clínica Médica del Hospital José M. Cullen. Mediante el programa Statistical Package for the Social Sciences 15.0, se realizó un análisis descriptivo y la prueba de Chi cuadrado, para determinar asociación estadística, entre variables cualitativas con significancia de pBackground. Melanoma is one of the deadliest forms of skin cancer, showing an increasing incidence worldwide over the past years. The aim of this study was to assess people's knowledge about melanoma, and their protective measures against UV radiation, considering that two-thirds of melanoma cases are associated to sun exposure. General objective. To assess the knowledge about melanoma and the sun protective practices in patients who attended the Department of Dermatology and in those admitted to the General Internal Medicine Unit of José M. Cullen Hospital. Material and methods. It was an observational, prospective, longitudinal, descriptive study. A sample of 275 participants aged between 16-85 years was included, composed of voluntary patients from the Department of Dermatology and inpatients from the General Internal Medicine Unit of José M. Cullen Hospital. The Statistical Package for the Social Sciences 15.0 software was used to make a descriptive analysis; the chi-square test was performed with a significance level of p < 0.05 to determine the statistical association among qualitative variables. Results. The knowledge was poor, since only 53% of respondents associated melanoma to skin cancer correctly. Hats were the most used sun protection choice, specially in men (p < 0.001. The use of sunscreen was more common among women (p= 0.003 - in fact, they were the ones who used it more regularly (p= 0.011 last summer - and among people under 40 (p= 0.002. Using long clothing was more common in men (p= 0.006 and in people over 40 (p= 0.002. A significant result was found between the use of SPF and its daily reapplication (p < 0.001, between not using any sun protection element and considering that a mole can develop skin cancer (p= 0.014. Conclusion. There is little knowledge among people, which is reflected on the inadequate protective practices against UV radiation.

  18. Las universidades argentinas en el contexto de las políticas de los 90s: el caso de la licenciatura de articulación en ciencias de la educación de la UNICEN. The Argentine Universities in the Context of Policies of the 90s: The Case of the Joint Degree in Science Education UNICEN

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    Iris Richmond

    2006-10-01

    Full Text Available Este artículo analiza los cambios asociados a la implementación de una licenciatura de articulación en Ciencias de la Educación en la Universidad Nacional del Centro de la Provincia de Buenos Aires (Argentina. Esta propuesta educativa debe comprenderse en el marco de la reforma estructural del sistema educativo que promovió el gobierno nacional en el decenio de los 90s, con la intención de redefinir la relación del Estado con respecto a la educación. Esta oferta educativa que, aparentemente, buscó democratizar el acceso a la educación superior universitaria se constituyó en un mecanismo de mercado para generar recursos de financiamiento mediante la venta de conocimiento a los egresados del subsistema de educación superior no universitario con título de docente. This article analyses the changes caused by the implementation of an articulated degree in Educational Sciences at the Universidad Nacional at Centro de la Provincia in Buenos Aires (Argentina. This educational program should be understood within the framework provided by the structural reforms of the educational system, promoted by the national government in the 1990's with the intention of restructuring the State–Society relations. This program that appeared to be promoting the democratization of access to the university system was transformed into a market mechanism, for the provision of financial resources to the university by selling "knowledge" to graduates from teacher education programs.

  19. Aspectos epidemiológicos del cáncer no melanoma de piel en un servicio de dermatología de la ciudad de Santa Fe - Argentina 2007 Epidemiologic aspects to the skin cancer non melanoma in a dermatologic office of the Santa Fe city - Argentine 2007

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    B L M Lukaszuk

    2008-03-01

    Full Text Available Antecedentes: la incidencia del cáncer no melanoma de piel (CNMP, principalmente en países tropicales ha aumentado en grandes proporciones. La identificación de lesiones sospechosas y aquellas relacionadas directamente con el cáncer de piel es efectuada en ocasiones por colegas de muchas especialidades médicas. Objetivos: estudiar las características de la frecuencia del CNMP en relación con ciertos factores de riesgo en el Hospital José María Cullen, de la ciudad de Santa Fe, capital de la provincia del mismo nombre, Argentina. Materiales y métodos: estudio retrospectivo, no experimental, descriptivo y de corte transversal. La muestra quedó conformada por 61 pacientes de ambos sexos y de 1 a 83 años. Se confeccionó una historia clínica completa de los pacientes candidatos a la toma de biopsia, que luego fue analizada por el Servicio de Anatomía Patológica. Se realizó un análisis descriptivo utilizando el programa SPSS 11.5, mediante el cual se usó la prueba de Chi cuadrado y tablas de contingencia para relacionar las variables y comparar los datos. Se estableció una asociación estadísticamente significativa cuando se halló un valor de pBackground: The incidence of non-melanoma skin cancer (NMSC, mainly in tropical countries has increased in large proportions. The identification of suspicious lesions and those directly related to the skin cancer is made by colleagues of many medical specialities. Objectives: Study the characteristics of the frequency of NMSC and their relation with certain risk factors in the Hospital José María Cullen, city of Santa Fe, capital of the province of the same name, Argentina. Materials and Methods: This was a retrospective, not experimental, descriptive and transversal cut study. The sample was composed by 61 patients of both sexs and from 1 to 83 years old. A complete clinical history of patients with suspected lesions were developed. After the biopsy collection, the Department of Pathology analyze them. A descriptive analysis was performed using SPSS 11.5 program; Chi-square test and contingency tables were used to relate variables and compare data. It stablished a statistically significant association when it founded a value of p<0,05. Results: We observed that the frequency of NMSC was 29.5%, affecting mostly male (72.2%. Statistically significant difference were found (p=0,008, with respect to the female gender. Patients between 61 and 70 years were the most afected age group with a frequency of 38.9% (p=0,001.The most common type of NMSC was basal cell carcinoma (77.8% and the most frequent location was head and neck (61.1%. The risk factor found most frequently (94.4% was the photoexposure (p=0,00 and the skin phototype most affected was the type II (61.1%. Conclusion: The incidence of non-melanoma skin cancer is high.

  20. LA ALFARERÍA DEL TARDÍO PREHISPÁNICO DEL VALLE DEL BOLSÓN (CATAMARCA, ARGENTINA: ¿PRODUCCIÓN LOCAL O ALÓCTONA? / The Late Prehispanic pottery of the Bolsón Valley (Catamarca, Argentine: local or allochthonous production?

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    Verónica Puente

    2014-11-01

    Full Text Available En este trabajo se presentan los resultados obtenidos en los estudios de procedencia de conjuntos cerámicos recuperados en dos asentamientos conglomerados del valle del Bolsón (Belén, Catamarca, Argentina vinculados a ocupaciones del tardío prehispánico (ca. 900-1600 DC. Las muestras estudiadas corresponden principalmente a cerámica pintada en negro sobre rojo reconocida como de estilo Belén, en menor medida ordinaria y excepcionalmente negro sobre crema y ante. Se complementaron análisis petrológicos y análisis por activación neutrónica instrumental realizados a la alfarería y a materias primas adecuadas para la producción alfarera muestreadas en la región. Se concluye que un grupo mayoritario de piezas fueron elaboradas con arcillas y arenas procedentes de la región bajo estudio. Asimismo, se destacan similitudes composicionales entre la vajilla recuperada en ambos asentamientos a pesar de las diferencias logísticas y estratégicas de emplazamiento. Los resultados generados son un importante aporte al tema de la producción alfarera a escala suprarregional dado que evidencian la coexistencia de distintos locus de producción cerámica en el oeste catamarqueño durante el lapso temporal estudiado.   Palabras clave: cerámica, tardío prehispánico, procedencia, análisis de activación neutrónica, petrografía.   Abstract The results obtained in the study of the provenance of ceramic recovered in two conglomerates settlements of the valley of El Bolsón (Belén, Catamarca, Argentina linked to prehispanic late occupations (ca. 900-1600 AD are given. The samples analyzed correspond mainly to Belén style ceramic, in lesser frequency to ordinary, and exceptionally to black over cream and beige. This study combined petrological and neutron instrumental activation analysis made in both kind of samples, archaeological pottery and local raw materials. It is concluded that a majority of archaeological pottery were made with clay and sand from the region. Further the logistical and strategic differences that had both settlements, these show similarities between the compositional pottery that was recovered in the same. These results are an important contribution to the subject of production pottery to macroscale, that evidences the coexistence of different locus of ceramic production in the western Catamarca during the period studied. Keywords: pottery, prehispanic late, provenance, neutron activation analysis, petrography. 

  1. NEOEVOLUCIONISMO Y ECOLOGÍA CULTURAL. LA OBRA DE JULIAN STEWARD Y LA RENOVACIÓN DE LA ENSEÑANZA DE LA ANTROPOLOGÍA EN LA ARGENTINA / Neo-evolutionism and cultural ecology. The Argentine Renovation of Anthropology Teaching under the influence of J. Steward

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    Gastón Julián Gil

    2010-10-01

    Full Text Available La introducción de la obra del antropólogo norteamericano Julian Haynes Steward (1902-1972 produjo una parcial renovación de la enseñanza de la antropología en la Argentina desde mediados de la década del cincuenta. Principalmente en arqueología (y más tarde en lo que comenzaría a llamarse antropología social, el enfoque materialista, neoevolucionista y ecológico entró en tensión con la corriente histórico-cultural alemana que había hegemonizado el campo antropológico nacional liderado por el italiano José Imbelloni desde la Universidad de Buenos Aires. La circulación de estas nuevas ideas -que también provocaron fuertes polémicas en su ámbito de gestación original- es abordada principalmente a partir de la labor transformadora y revitalizadora de Alberto Rex González, posgraduado en la Universidad de Columbia y alumno de Steward a fines de los años cuarenta. De este modo, se propone un análisis de las maneras en que nuevos postulados conceptuales provenientes de una tradición metropolitana se difundieron en un contexto periférico.

  2. Primer registro de Conidiobolus coronatus (Zygomycetes: Entomophthorales en crías experimentales de dos especies plaga del maíz: Delphacodes kuscheli y D. haywardi (Hemiptera: Delphacidae en la Argentina First record of Conidiobolus coronatus (Zygomycetes: Entomophthorales in experimental breeding of two pest species of corn: Delphacodes kuscheli and D. haywardi Muir (Hemiptera: Delphacidae in Argentine

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    A. V. Toledo

    Full Text Available Se investigó la ocurrencia natural del hongo entomopatógeno Conidiobolus coronatus (Costantin Batko (Zygomycetes: Entomophthorales en adultos de Delphacodes kuscheli Fennah y D. haywardi Muir (Hemiptera: Delphacidae, criados sobre Hordeum vulgare L. bajo condiciones de invernadero. Los insectos muertos, por una sospechada infección fúngica, fueron recolectados, esterilizados superficialmente, y examinados en el laboratorio. Conidiobolus coronatus fue aislado en cultivos puros, descrito morfológicamente y depositado en colecciones micológicas. Este trabajo presenta el primer registro de C. coronatus contra insectos perjudiciales en la Argentina.The natural occurrence of the entomopathogenic fungus Conidiobolus coronatus (Costantin Batko (Zygomycetes: Entomophthorales in adults of Delphacodes kuscheli Fennah and D. haywardi Muir (Hemiptera: Delphacidae, reared on Hordeum vulgare L. under greenhouse conditions, was investigated. Dead insects, suspected of fungal infection, were collected, surface sterilized, and examined in the laboratory. Conidiobolus coronatus was isolated in pure cultures, described morphologically, and deposited in mycological collections. This paper presents the first record of C. coronatus against harmful insects in Argentina.

  3. Related problems to new regional interconnections. Functioning analyses of the 500 kv Argentine system for exporting the first 1000 W to Brazil; Problemas relacionados com las nuevas interconexiones regionales. Estudios de funcionamiento del sistema argentino de 5 kV para la exportacion de los primeros 1000 MW a Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Alonso, Jose Luis; Castro, Marcelo [Servicios de Energia Elactrica y Electromecanica S.R.L., Buenos Aires (Argentina)]. E-mail: joseluisalonso@sieye.com.ar; marcelocastro@sieye.com.ar

    2001-07-01

    This work presents the analyses of static functioning (load flows) and demanded transitory stability by the Technical Procedure number 1(TP1) from CAMMESA, corresponding to the first international interconnection between Argentina and Brazil built by the CTM S.A. company. This new entailing, which started to operate in june 2000, links the Rincon de Santa Maria Transmission Station (TS) to a new TS built in Garibaldi city (Brazilian side) through a 500 kV transmission line with extension of 130 kilometers. In Garibaldi, a converter type back to back composed by two 550 kV modules was installed with 1100 MW of total nominal capacity. The Garibaldi TS is interconnected to the Ita TS, which belongs to the ELETROSUL company, through a line of 525 kV with extension of 386 kilometers. The investigations was accomplished according to the contingencies based on the agreement with CAMMESA and the dynamical model of the 50/60 Hz back to back converter (of last generation) called Capacitor Commutated Converter has been represented for all the situations.

  4. Riego complementario en un Argiudol típico de la Pampa Ondulada argentina bajo siembra directa: efectos sobre algunas propiedades químicas y físicas del suelo Supplementary irrigation in a typic Argiudoll of the Argentine Rolling Pampas under no-tillage: effects on soil physical and chemical properties

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    Martín Torres Duggan

    2012-12-01

    Full Text Available El riego complementario permite incrementar y estabilizar los rendimientos de los cultivos de granos. Sin embargo, cuando se utilizan aguas de mala calidad, pueden generar procesos de degradación de las propiedades edáficas. El objetivo del trabajo fue evaluar el impacto del riego complementario, con agua de baja conductividad eléctrica y sodicidad intermedia, sobre algunas propiedades físicas y químicas de un suelo Argiudol típico, franco, en siembra directa. Los tratamientos fueron: i: Riego durante 13 años; ii: Secano en zonas adyacentes (esquinas. Las propiedades se evaluaron en tres sectores dentro del lote diferenciando en círculo de riego y esquinas, con un diseño de t-apareado. El tratamiento Riego incrementó significativamente el pH y el porcentaje de sodio intercambiable (P0,05. La resistencia a la penetración fue superior a 2 MPa en ambos tratamientos en todo el perfil medido (0-40 cm, lo cual estuvo posiblemente asociado al tránsito vehicular y la cosecha en suelo húmedo. La estabilidad de agregados fue muy alta en ambos tratamientos, atribuible al contenido elevado de materia orgánica en superficie y al manejo en siembra directa.Supplementary irrigation increases and stabilizes crop yields. However, when irrigation water of poor quality is applied, it can adversely affect soil properties. The objective of this study was to: evaluate the influence of supplementary irrigation on some physical and chemical properties under no- till cultivation systems. A field experiment was performed on a loamy Typical Argiudoll, managed under no- tillage. The treatments were: 1-Irrigated soil during 13 years, 2-Adjacent Rainfed soil. Soil chemical (pH, electric conductivity, exchangeable sodium percentage, organic carbon, total N, exchangeable cations, cation exchange capacity, extractable P and physical properties (infiltration rate, soil penetration resistance, bulk density, gravimetric water content, structural instability were evaluated. Irrigation significantly increased the pH and exchangeable sodium percentage (P 2Mpa in both treatments, probably due to the effects of the cultivation and harvest machinery under high soil water contents. The soil structural instability was very low (i.e. high structural stability in both treatments, probably associated to the high organic matter content and the no- till cultivation system.

  5. Voces silentes y contrapuntos heterotópicos sobre el fenómeno inmigratorio: recuperaciones de los Beck Bernard y de Laura Pariani desde la academia argentina = Silent voices and heterotopic counterpoints about the immigration phenomenon: the Beck Bernard’s and Laura Pariani’s recovery from the Argentine academy

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    Crolla, Adriana

    2015-01-01

    Full Text Available Las nuevas identidades migrantes, la cuestión de la circulación en una época de la historia que parece marcada por el flujo, la relativización de las coordenadas espacio-temporales, el reciclaje de modelos y la construcción/deconstrucción de culturas en movimiento o de la movilidad, dan necesariamente como resultado la emergencia de fenómenos que se constituyen en y por la interculturalidad y las transmigraciones. Interrogarse sobre el habla (discurso del sujeto “gringo” que se constituyó en la pampa santafesina mediante textos y discursos, es lo que desde hace un tiempo proponemos estudiar en todas sus facetas. Y al mismo tempo las nuevas migraciones hacia y desde Italia desde nuestra “zona” cultural. El trabajo pretende “escuchar” las voces silenciadas sobre el fenómeno inmigratorio a partir de la recuperación de textos que operan miradas destacadas: los Beck Bernard en relación a la Pampa Gringa y los textos de la escritora italiana Laura Pariani sobre la inmigración italiana desde y hacia latinoamérica

  6. 1983-2001年阿根廷结核病实验室网络抗酸杆菌涂片显微镜检查的质量评价%Quality assessment of smear microscopy for acid-fast bacilli in the Argentine tuberculosis laboratory network, 1983-2001

    Institute of Scientific and Technical Information of China (English)

    G. F. Kusznierz; O. A. Latini; M. D. Sequeira; 贺晓新

    2006-01-01

    地点:阿根廷结核病实验室网络.目标:(1)评价1983-2001年间督导的抗酸杆菌(AFB)涂片显微镜检查技术质量,(2)分析操作过程误差对检查结果的影响.设计:对抗酸杆菌(AFB)涂片显微镜检查的督导评价结果进行分析.评价标本、涂片、染色以及结果判读质量,并分析这些参数之间的联系.结果:优良质量标本的比例比较高.研究结果证明,阳性结果与黏液脓性痰标本之间有直接联系.薄涂片的比例相对较高.薄涂片的阳性率以及细菌计数较低.染色质量良好.全国的读片一致性为98%.然而假阳性率也比较突出,46%的假阳性与染色缺陷有关.结论:阿根廷结核病实验室网络的抗酸杆菌涂片显微镜检查技术质量以及涂片判读一致性比较满意.然而,需要在以下方面加以改进:涂片质量、染色和读片、覆盖率、督导工作的非中心化、涂片的选择方法以及数据登记等.也需要开展涂片保存方面的实施性研究.

  7. Estudio de la fosfatasa ácida y alcalina en suelos de la Región Pampeana Norte del área sojera argentina Study of acid and alkaline phosphatase in soils of the Pampean North Region from argentine soybean area

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    Leticia Andrea Fernández

    2008-07-01

    Full Text Available La transformación de los compuestos de fósforo orgánico (Po a fósforo inorgánico (Pi soluble, es denominada mineralización y es llevada a cabo por un grupo de enzimas conocidas como fosfatasas. En este trabajo, se estudió la actividad fosfatasa de cinco lotes de la región pampeana norte del área sojera argentina, mediante: la evaluación de la actividad fosfatasa del suelo, y el recuento de las comunidades bacterianas y fúngicas con esa actividad, y de esta manera se obtuvo información sobre el potencial de los mismos para movilizar el Po. Se determinó el número de bacterias aeróbicas heterotróficas cultivables (BAHC así como el de hongos cultivables (HC, además del número de productores de fosfatasas ácidas y alcalinas. El número de bacterias con actividad fosfatasa fue en promedio 6,85 10(5 UFC g-1 de suelo para la fosfatasa ácida; mientras que para la fosfatasa alcalina fue en promedio 5,80 10(5 UFC g-1 de suelo. En cambio, el valor medio de hongos con actividad fosfatasa ácida fue 1,78 10³ UFC g-1 de suelo y para la enzima alcalina 1,77 10³ UFC g-1 de suelo. No se encontraron diferencias estadísticamente significativas entre el número de bacterias y el de hongos con fosfatasa ácida o alcalina entre los distintos suelos. Por otro lado, el nivel de actividad de la fosfatasa alcalina osciló entre 5,72 y 15,5 mg p-nitrofenol kg-1 suelo h-1, mientras la ácida varió entre 27,4 y 105 mg p-nitrofenol kg-1 suelo h-1. Se encontraron diferencias significativas en la actividad enzimática entre los cinco suelos, siendo mayor la actividad ácida que la alcalina. Los resultados de este trabajo demostraron que los suelos estudiados presentan una actividad mineralizadora de fuentes de Po que coincide con otros trabajos de suelos cultivados y que el recuento de los organismos productores de fosfatasas complementa la información obtenida a partir de la determinación de la actividad fosfatasa del suelo. Mediante la utilización de ambos métodos, es posible estudiar la fosfatasa ácida y alcalina de un suelo y obtener información sobre el potencial del mismo para movilizar Po.Transformation of organic phosphorus (Po into soluble inorganic phosphorus (Pi is called mineralization and is carried out by phosphatase enzymes. The present research focuses on the study of the phosphatase activity of five soils from the soybean area of the Northern Pampean region, by evaluating the phosphatase activity in soil samples and the number of bacteria and fungi with that activity. Soil samples were collected and the total number and phosphatase activity of cultivated heterotrophic aerobic bacteria (CHAB and cultivated fungi (CF was assessed. No significant differences were observed in the numbers of CHAB and CH between the studied soils. The number of bacteria with acid phosphatase activity was 6.85 10(5 CFU g-1 soil, while alkaline activity was 5.80 10(5 CFU g-1 soil. In contrast, the number of fungi with acid phosphatase activity was 1.78 10³ CFU g-1 soil and with alkaline activity was 1.77 10³ CFU g-1 soil. No significant differences were observed in the number of bacteria and fungi with both enzymes. However, acid activity was higher than alkaline activity in soil samples. Alkaline phosphatase activity ranged from 5.72 to 15.5 mg p- nitrofenol kg-1 soil h-1 while acid activity varied from 27.4 to 10(5 mg p-nitrofenol kg-1 soil h-1. There were significant differences in phosphatase activity between the soybean soils. Our results show that the mineralization activities of Po sources are in agreement with other cultivated soils. On the other hand, the number of bacteria and fungi complements the information on soil phosphatase activity. Clearly, both methods allow the study of alkaline and acid phosphatase activity in soil and give information about the soil potential to mobilize Po.

  8. Comparison among mechanisms of incentive to alternative sources for renewable generation of electric power and planning of system expansion in Brazil, Argentine and Chile; Comparacao entre mecanismos de incentivo as fontes alternativas para geracao renovavel de eletricidade e planejamento da expansao do sistema no Brasil, Argentina e Chile

    Energy Technology Data Exchange (ETDEWEB)

    Nogueira, Larissa Goncalves; Dedecca, Joao Gorestein; Jannuzzi, Gilberto de Martinno [Universidade Estadual de Campinas (PPSE/UNICAMP), SP (Brazil). Programa de Planejamento de Sistemas Energeticos], Emails: larissa@fem.unicamp.br, jdedecca@fem.unicamp.br, jannuzzi@fem.unicamp.br; Gomes, Rodolfo Dourado [International Energy Initiative (IEI), Campinas, SP (Brazil)], E-mail: rodolfo@iei-la.org

    2010-07-01

    To study the insertion of the renewable energy sources (RES) in the national electrical power matrixes is interesting to analyse the adequacy and coherence of the of the mechanisms which make the inversion in generation from the conventional sources and that which incentive the generation from the RES. It is important to notice that the existence of coherent mechanisms do not mean that they are efficient, but only that their influence on the generation enterprises are similar.

  9. Por uma história transnacional da imprensa anarquista e anticlerical: a repercussão do caso Ferrer pelas páginas subversivas argentinas, brasileiras e espanholas (1909-1916 = To a transnational history of anarchist and anticlerical press: the impact of Ferrer case in the subversives Argentine, Brazilian and Spanish pages (1909-1916

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    Poletto, Caroline

    2014-01-01

    Full Text Available O presente artigo pretende refletir sobre algumas das novas tendências e possibilidades historiográficas verificadas no campo da história do trabalho através da aplicação de uma lente transnacional de análise, demonstrando, por um lado, a busca pela superação do nacionalismo metodológico e, por outro, os ganhos que uma abordagem transnacional da história da imprensa anarquista e anticlerical pode proporcionar ao ampliar os espaços de análise e estabelecer interconexões entre esses espaços e os atores sociais envolvidos. Para exemplificar algumas possibilidades da aplicação de uma abordagem transnacional da história do trabalho serão tomados, como objetos de pesquisa, exemplares de periódicos anarquistas e anticlericais argentinos, brasileiros e espanhóis, entre os anos de 1909 a 1916, que retratam e contestam, à sua maneira, a prisão e posterior execução do educador libertário Francisco Ferrer

  10. Encuesta de opinión: En pre-grado, 2003-2004 de Patología Oral y Estomatología. La Plata, Argentina Survey of Opinion: In Pre-grade 2003-2004 of Oral Pathology and Stomatology, La Plata, Argentine

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    M Bruno

    2006-06-01

    Full Text Available Se trata de un trabajo de investigación sobre el proceso "enseñanza/aprendizaje" realizado a través de Encuestas de opinión por los alumnos del cuarto y quinto curso de Pregrado, de Patología y Clínica Estomatológica. El objetivo fue el evaluar los resultados del "proceso enseñanza /aprendizaje", y su aprovechamiento por los alumnos. Material y métodos: Las comisiones de alumnos que entraron en la encuesta fueron tomadas al azar en los cursos lectivos de los años 2003 y 2004. Las preguntas del cuestionario fueron diez, siendo las mismas en cada año. Las respuestas fueron anónimas y se clasificaron por las categorías SI, SIEMPRE, EN GRAN MEDIDA (favorables y NO, NADA, A VECES, NUNCA Y NO SE RESPONDER (como desfavorables. En este último curso lectivo se agregó una variante pedagógica (multimedia sobre imágenes de patología y estomatología. Se realizó análisis estadístico. Se presentó la información en forma de tablas y gráficos. Se aplicó la prueba del ji2 para comparar cada una de las preguntas realizadas en ambos grupos y en ambos años y se calcularon los odds ratios y sus intervalos de confianza, para indicar el mayor posibilidad favorable para uno u otro grupo, según año de la encuesta. Resultados: Se observaron diferencias significativas (p This work consist about an investigation of the "teaching and learning process" made trough two surveys of opinion, performed by Pre-grade students of 4th and 5th levels of Oral Pathology and Clinic Stomatology. The objetive was to evaluate Instruments used on "teaching and learning process" and its avail. Material and methods: The groups of students that took place in answering the questionary were aleatory selected. There were performed same surveys in each year: 2003 and 2004. Answers were anonymous and they were classificated through some categories as: YES, ALWAYS, IN LARGE QUANTITY (favorable, and SOME TIMES, NEVER and I DON’’T KNOW TO ANSWER. (as no favorable. Over the last year, a pedagogic variant (multimedia of pathological and stomatologic diseases was added. Statistic analys was made. Information was establish on tables and graphics. chi2 test was applied in order to compare each question and i odds ratios was calculated with its confidence intervals well. Its indicated the favorable chance for one or another group of questions, depending the year of each survey. Results: Its were observed significant statistic differences (p<0.05 in 5 of 10 questions and a greatly significant difference (p<0.01 in the other 5,in favor to year 2003. Odds ratio demostrated more possibility of favorable answers belong 2003 survey as well. Conclusions: According to results of the two groups of questions and the statistic analysis, it could be inferred that: 1. chi2 test, demostrats significantly statistic differences between favorable and no favorable answers between 2003.and 2004 surveys. 2. About usefulness of odds ratio study, it shaws that "teaching and learning process" in this investigation, has had 3 times better posibilities of evolution in 2003 that in 2004.

  11. La estructura del Grupo Sierras Bayas en el sector norte de las sierras homónimas, noroeste de las Sierras Septentrionales de Buenos Aires The structure of Sierras Bayas Group in the north area of the homonymous hills, northwest of Sierras Septentrionales of Buenos Aires, Argentine

    OpenAIRE

    A.C. Massabie; O.E. Nestiero

    2005-01-01

    El Grupo Sierras Bayas, de edad precámbrica tardía, se halla integrado por las formaciones sedimentarias Villa Mónica, Cerro Largo y Loma Negra, y forman parte de la porción noroccidental de las Sierras Septentrionales de Buenos Aires. Los afloramientos principales, relativamente aislados en serranías bajas, se ubican en los alrededores de Olavarría, particularmente en las Sierras Bayas, y con menor extensión en cercanías a la localidad de Barker. La morfoestructura de conjunto de estas sedim...

  12. Anatomía comparada del leño de Eucalyptus camaldulensis (Myrtaceae de dos orígenes, ensayados en Santiago del Estero Comparative wood anatomy of two select origins of Eucalyptus camaldulensis (Myrtaceae, implanted in Santiago del Estero, Argentine Chaco Region

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    Juana Graciela Moglia

    2008-12-01

    Full Text Available El objetivo del presente trabajo fue estudiar la variabilidad radial en el leño de ejemplares de Eucalyptus camaldulensis Dehnh. provenientes de dos orígenes selectos implantados en un ensayo en Santiago del Estero. Se compararon materiales provenientes del Huerto Semillero de Zimbabwe y de Emu Creek Queensland. Se estudiaron las secciones transversales de fuste a 1,30 m de altura de 7 ejemplares de 5 años de edad, de cada uno de los orígenes. Se extrajeron dos probetas sobre el radio Norte, tomadas una a 25% y otra al 80% de distancia con respecto a la médula. Se analizaron: frecuencia y diámetro de vasos, longitud de vasos y fibras, porcentaje de tejidos, tipos de vasos y radios. El análisis de la varianza se ajustó al diseño de muestreo de efectos anidados para «orígenes» y «árboles», utilizando las «distancias radiales a la médula» como medidas repetidas y se evaluó con un modelo mixto. Los dos orígenes estudiados presentan porosidad difusa, vasos solitarios y radios homogéneos. Ninguna de las variables estudiadas mostró diferencias significativas entre orígenes. Las longitudes de vasos y fibras mostraron diferencias significativas entre distancias. La frecuencia y longitud de vasos, frecuencia de radios y los porcentajes de tejidos mostraron diferencias significativas entre árboles.The aim of the present research was to study radial wood variation of two different origins in Eucalyptus camaldulensis Dehnh. proceeding from a seed allotment in Zimbabwe and Emu Creek Queensland. For this study seven trees of 5 years old, of each origin, were selected from an implanted trial in Santiago del Estero. Two samples were taken from transverse sections at 1.30 m height on the North radius, one located at 25% and the other at 80% of distance to the pith. Frequency, diameter, and length of vessels, fiber length, tissues percentages and ray types were analyzed. Univariate analysis was performed using a nested design, for «origins» and «trees». The «distance to the pith» was employed as repeated measures, and evaluated with a mixed model. Both origins showed wood diffuse porosity, vessels mainly solitary and homogeneous rays. No differences were found between origins for any studied variables. Fiber and vessel lengths showed significant differences between distances to the pith. Frequency and length of vessels, ray frequency and tissue proportions varied significantly between trees.

  13. Cooperative journals and cooperative education in Córdoba province (Argentine: 'El Cooperativista', a case of analysis Los periódicos cooperativos y la educación cooperativa en la provincia de Córdoba (Argentina: El caso de 'El Cooperativista'

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    Beatriz R. Solveira

    2011-01-01

    Full Text Available An institutional journal is a powerful diffusion mean of everyday cooperatives activities, and one of the best ways to develop cooperative education, specially what it refers to the principles and objectives pursuit by this type of associations; but it is also a mean to let know to associates and general community cooperative activities and its advantages, as much as other issues that involves direct or indirectly the whole society were the institution is based.El periódico institucional es un órgano de difusión del quehacer cooperativo y una de las mejores vías para llevar adelante la educación cooperativa, especialmente en lo que se refiere a la difusión de los principios cooperativos y de los objetivos perseguidos por las sociedades de este tipo; pero también es un vehículo para dar a conocer entre los asociados y sus familiares y a la comunidad en su conjunto tanto los actos cooperativos con sus fundamentos y ventajas, como otras tantas cuestiones que involucran directa o indirectamente aspectos substanciales del quehacer cooperativo e informaciones que atañen a la propia localidad donde se asienta la entidad. En este artículo se estudia un caso especial, el del periódico publicado sin interrupción por la cooperativa vini-frutícola agrícola "La Caroyense" entre los años 1946 y 1967, analizando especialmente en los 233 números publicados en ese lapso junto con ese tipo de anuncios, aquellos que sirvieron para formar y fortalecer entre los asociados los principios cooperativos y el sentido de solidaridad.

  14. fragmentation of knowledge processes and institutional knowledge: The Case of the Argentine Research and Teaching (1989-2003 Prebendarismo Y Faccionalismo En La Institucionlización Del Conocimiento: El caso de la Investigación y la Docencia Argentinas (1989-2003

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    Eduardo R. Saguier

    2004-02-01

    Full Text Available The study of the centralizing mechanisms of academic power that very often work to obstruct and boycott individual and collective demands to produce critical knowledge, as well as impose circuits or networks made of multiple and combined knots (clientelism, nepotism, careerism and ethnocentric, sectarian and nepotic reciprocities, must necessarily go to their historical origins, analyzing several phenomena such as the coloniality of power, the subordination to a geopolitical and socio-technological stratification of knowledge, the fragmentation of knowledge processes, and other phenomena like endogamy, sectarianism, corruption and social, economic and political crises. Also, we are going to study the centripetal forces of decentralization, privatization or education federalism and their academic demands, the role of confidentiality in the formation of networks in academic and scientific environments, as well as their noxious effects in the practice of academic freedoms, the dissociations of power from knowledge and research from teaching, the distinction of teaching decentralization from research decentralization, the segregated education circuits, the intensity of the market of human capital and the quality of the levels of excellence of social and cultural capital, in the knowledge society. Also, we are going to refer to deformations in philanthropic politics and subsidies to scientific research, to models of technological innovation, the origin and development of the triadic partition of academic power or the tri-functional academic model, and the evaluation functions such as accreditation, extension, transference, counseling, programming and planning. El estudio de los mecanismos concentradores de poder académico que inveteradamente operan obstruyendo y boicoteando las demandas individuales y colectivas para producir conocimiento crítico, y que imponen redes hechas de múltiples y combinados nudos o trabas (patronazgos, clientelismos, carrerismos, caudillismos, amiguismos y reciprocidades negativas etnocéntricas, sectarias, y nepóticas, requiere desentrañar sus orígenes históricos indagando en diversos fenómenos tales como la colonialidad del poder,la triple disociación del poder y el saber, la ciencia y la investigación, y la investigación y la docencia; la sumisión en la estratificación geopolítica y sociotecnológica del conocimiento, el conocimiento institucionalizado excluyente; la fragmentación o segmentación disciplinar (en especialidades, el fraccionamiento de los poderes académicos, la conversión de los conocimientos en oficios artesanales, ocupaciones rentables y profesiones liberales, y otras manifestaciones convergentes como la endogamia, el sectarismo, el prebendarismo, el patrimonialismo, la corrupción y las crisis sociales, políticas y económicas, a saber: golpes de estado, genocidios indígenas, dictaduras militares, legados coloniales e imperiales, y guerras civiles, nacionales y mundiales. Para ello nos abocaremos a una múltiple aproximación histórica y paradigmática en los campos de las filosofías, psicologías y sociologías de la ciencia y de la educación; de las antropologías simbólica, jurídica y corporativa; de las ciencias de la comunicación y la educación; y de los Estudios Culturales; a una multiplicidad de procesos de: a diversificación del conocimiento; b brechas cronológicas (generacionales y geográficas (entre metrópolis académicas y periferias científicas; c modernización de la ciencia y la educación; d centralización educativa y sus impactos geográficamente diferenciales; e segregación de la promoción educativa; y f formación de las redes virtuales locales y nacionales y sus conexiones con la red global. También nos abocaremos a los flujos del aparato científico-educativo; al monopolio de las estructuras de control simbólico; a su desagregación en segmentos o agencias, y sus componentes míticos, simbólicos, litúrgicos y jurídicos; y a la distinción entre la descentralización y/o privatización del aprendizaje y la docencia y la descentralización y/o privatización de la investigación científica. Asimismo, nos referiremos a la relación del conocimiento con la estructura productiva y el poder político, a las deformaciones en las políticas filantrópicas, de mecenazgo y subvención a la investigación científica, a los modelos de innovación tecnológica lineales, espiralados y reticulares, al divorcio de la docencia respecto de la acreditación de la docencia, y a la diferenciación de las tareas ejecutivas o administrativas de las tareas normativas, evaluadoras y divulgadoras.

  15. Una lengua nacional aluvial para la Argentina: Jorge Luis Borges, Américo Castro y Amado Alonso en torno al idioma de los argentinos An alluvial national language for Argentina: Jorge Luis Borges, Américo Castro and Amado Alonso on "argentine" language debate

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    Miranda Lida

    2012-06-01

    Full Text Available El artículo se concentra en estudiar los debates en torno a la concepción de la lengua nacional en la Argentina, a la par del establecimiento del Instituto de Filología a partir de la década de 1920. Asimismo, sitúa estos debates en la sociedad y la cultura de la época. Explica, por otra parte, el modo en que incidió el arribo del peronismo al poder sobre el Instituto de Filología, la Universidad de Buenos Aires y la propia concepción de la lengua nacional.This article focuses on the debates about the idea of national language of Argentina, during the foundation of the Instituto de Filología (Buenos Aires University since the twenties. It also studies the social and cultural context on which those debates aroused. Lastly, it describes the way the peronism had impact on the Instituto de Filología, the University at large and the idea about the national langue.

  16. Análisis y edad de la sección calcárea de la Formación Las Chilcas (Chile y sus implicancias para la correlación con unidades de Argentina Analysis and age of the calcareous section of Las Chilcas Formation (Chile and its implications for correlation with Argentine units

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    Maísa A. Tunik

    2008-09-01

    Full Text Available La Formación Las Chilcas es una unidad volcaniclástica que posee depósitos calcáreos en la vertiente oriental de la Cordillera de la Costa y en la depresión central de Chile. Diferentes reconstrucciones paleogeográficas la han relacionado con las Formaciones Algarrobo y Quiriquina producto de la ingresión marina maastrichtiana del Pacífico y alternativamente con la ingresión marina maastrichtiana procedente del Atlántico. Esta impresión ha sido registrada en el sector andino con los depósitos de la Formación Saldeño, unos kilómetros al este del Paso de Piúquenes cerca de los 33°30´ latitud sur. Estudios paleoambientales y paleontológicos indican que los sedimentos de la Formación Las Chilcas se desarrollaron en un ambiente marino somero con influencias mareales durante el Cretácico temprano. Los resultados de este trabajo permiten desvincular definitivamente a estos sedimentos calcáreos de los sedimentos de la Formación Saldeño y de los de la Formación Quiriquina y sus equivalentes temporales. De esta manera, queda descartada una posible comunicación entre los océanos Atlántico y Pacífico a la latitud de 33°30´ latitud sur durante el Cretácico tardío. Estos datos muestran claramente un levantamiento de los Andes para el Cretácico tardío a estas latitudes.The calcareous beds of Las Chilcas Formation outcrop along the eastern flank of the Coastal Range and in the central valley of Chile. Different paleogeographic reconstructions have related this unit to the Late Cretaceous Algarrobo and Quiriquina Formations as part of the Maastrichtian marine ingression from the Pacific or alternatively with the Atlantic ingression. It has also been compared with calcareous rocks located a few kilometers east of the Piúquenes Pass, known in Argentina as Saldeño Formation. Paleoenvironmental and paleontological analyses carried out in Las Chilcas Formation showed that it was developed in a tidal carbonatic system during the Early Cretaceous. These results definitively desvinculate the sediments from Las Chilcas Formation from the Quiriquina Formation or other Maastrichtian deposits from the Atlantic and Pacific ingressions. Based on the present data, it is ruled out a seaway between the Pacific and the Atlantic oceans at the 33°30´ south latitude during the Late Cretaceous. These new data clearly indicate that a tectonic uplift of the Andes separates both ingressions during the Late Cretaceous at these latitudes.

  17. Migration and Exile in Recent Argentinean History: an Interpretation from the Perspective of Transnational Social Spaces

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    Susana SCHMIDT

    2011-05-01

    Full Text Available International migration processes challenge the national perspective of history writing, because they affect both the society of origin and the one of destination and, therefore, we might have to take into account both realities to understand them in its complexity. This article makes use of the theory of transnational social spaces to reread the studies that approaches the migration flows between Argentina and Spain: in direction South-North, the recent Argentine economic migration and the Argentine exile of 1976; in direction North-South, the Spanish mass migration (1980-1930, the selective one of the republican exile and the late migration (1946-1960; and, in both directions, the return migrations. Although none of the revised investigations uses the approach of transnational spaces, they point out to relevant elements that allow understanding the configuration of a Spanish-Argentine or Argentine-Spanish space as result of a historical process in which migration interchanges occupy a relevant place. It finishes with a reflection on the recent Argentine history in relation with the studies on migrations and exiles.

  18. Disruption of foraging by a dominant invasive species to decrease its competitive ability.

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    Westermann, Fabian Ludwig; Suckling, David Maxwell; Lester, Philip John

    2014-01-01

    Invasive species are a major threat to biodiversity when dominant within their newly established habitat. The globally distributed Argentine ant Linepithema humile has been reported to break the trade-off between interference and exploitative competition, achieve high population densities, and overpower nests of many endemic ant species. We have used the sensitivity of the Argentine ant to the synthetic trail pheromone (Z)-9-hexadecanal to investigate species interactions for the first time. We predicted that disrupting Argentine ant trail following behaviour would reduce their competitive ability and create an opportunity for three other resident species to increase their foraging success. Argentine ant success in the control was reduced with increasing pheromone concentration, as predicted, but interactions varied among competing resident species. These behavioural variations provide an explanation for observed differences in foraging success of the competing resident species and how much each of these individual competitors can increase their foraging if the competitive ability of the dominant invader is decreased. The mechanism for the observed increase in resource acquisition of resident species appears to be a decrease in aggressive behaviour displayed by the Argentine ant, which may create an opportunity for other resident species to forage more successfully. Our demonstration of species interactions with trail pheromone disruption is the first known case of reduced dominance under a pheromone treatment in ants.

  19. Reproductive Rights or Reproductive Justice? Lessons from Argentina.

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    Morgan, Lynn

    2015-06-11

    Argentine sexual and reproductive rights activists insist on using the language and framework of "human rights," even when many reproductive rights activists in the US and elsewhere now prefer the framework of "reproductive justice." Reflecting on conversations with Argentine feminist anthropologists, social scientists, and reproductive rights activists, this paper analyzes why the Argentine movement to legalize abortion relies on the contested concept of human rights. Its conclusion that "women's rights are human rights" is a powerful claim in post-dictatorship politics where abortion is not yet legal and the full scope of women's rights has yet to be included in the government's human rights agenda. Argentine feminist human rights activists have long been attentive to the ways that social class, gender, migration, and racism intersect with reproduction. Because their government respects and responds to a human rights framework, however, they have not felt it necessary--as U.S. feminists have--to invent a new notion of reproductive justice in order to be heard. Given the increasing popularity of reproductive justice in health and human rights, the Argentine case shows that rights-based claims can still be politically useful when a State values the concept of human rights.

  20. De parias y patriotas. Afroporteños, identidad y nación en la segunda mitad del siglo XIX

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    Astrid Windus

    2003-12-01

    Full Text Available The article describes representations of Afro-Argentine identities and its interaction with the hegemonic discourse of a national and cultural Argentine identity, referring to Afro-Argentine texts form the 19th century Buenos Aires. Departing from a brief summary of the construction process of the Argentine nation as an imagined community of white, male citizens, it shows how the black porteño elite on the one hand inscribes the Afro-Argentines in the hegemonic discourse and, on the other hand, establishes certain forms of counter discourse, both to affirm and legitimize their status as members of the national community.//Este artículo describe las representaciones de las identidades afro-argentinas y sus interacciones con el discurso hegemónico nacional y cultural de la identidad argentina, haciendo referencia a los textos afro-argentinos del Buenos Aires decimonónico. Empezando por un breve sumario del proceso de construcción de la nación argentina como una comunidad imaginada de hombres blancos, se muestra cómo la élite negra porteña por un lado inscribe a los agro-argentinos dentro del discurso hegemónico y por otro lado, establece una suerte de contradiscurso. Las dos estrategias se emplearon para afirmar y legitimar su status como miembros de la comunidad nacional.

  1. Study of canine parvovirus evolution: comparative analysis of full-length VP2 gene sequences from Argentina and international field strains.

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    Gallo Calderón, Marina; Wilda, Maximiliano; Boado, Lorena; Keller, Leticia; Malirat, Viviana; Iglesias, Marcela; Mattion, Nora; La Torre, Jose

    2012-02-01

    The continuous emergence of new strains of canine parvovirus (CPV), poorly protected by current vaccination, is a concern among breeders, veterinarians, and dog owners around the world. Therefore, the understanding of the genetic variation in emerging CPV strains is crucial for the design of disease control strategies, including vaccines. In this paper, we obtained the sequences of the full-length gene encoding for the main capsid protein (VP2) of 11 canine parvovirus type 2 (CPV-2) Argentine representative field strains, selected from a total of 75 positive samples studied in our laboratory in the last 9 years. A comparative sequence analysis was performed on 9 CPV-2c, one CPV-2a, and one CPV-2b Argentine strains with respect to international strains reported in the GenBank database. In agreement with previous reports, a high degree of identity was found among CPV-2c Argentine strains (99.6-100% and 99.7-100% at nucleotide and amino acid levels, respectively). However, the appearance of a new substitution in the 440 position (T440A) in four CPV-2c Argentine strains obtained after the year 2009 gives support to the variability observed for this position located within the VP2, three-fold spike. This is the first report on the genetic characterization of the full-length VP2 gene of emerging CPV strains in South America and shows that all the Argentine CPV-2c isolates cluster together with European and North American CPV-2c strains.

  2. First isolation and nucleotide comparison of the gag gene of the caprine arthritis encephalitis virus circulating in naturally infected goats from Argentina

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    Carlos Javier Panei

    2017-02-01

    Full Text Available Caprine arthritis encephalitis virus (CAEV has been reported in different countries worldwide, based on serological and molecular detection. In Argentina, the prevalence of CAEV infections is increasing, with goats showing symptoms associated mostly with cachexia and arthritis. Although in Argentina the virus has been detected by serology, it has never been isolated or characterized. Thus, the objectives of this work were to isolate and analyze the nucleotide sequences of the gag gene of Argentine CAEV strains and compare them with those of other SRLVs previously reported. Nucleotide sequence comparison showed homology with CAEV-Co, the CAEV prototype. Phylogenetic analyses showed that the Argentine strains clustered with genotype B, subtype B1. Because the molecular characterization of the gag region is suitable for phylogenetic studies and may be applied to monitor the control of SRLV, molecularly characterizing the Argentine CAEV strains may help develop a proper plan of eradication of CAEV infections.

  3. Appointments and party organizations: network governmental party in kirchnerista peronism

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    Gerardo SCHERLIS

    2013-01-01

    Full Text Available This article contributes to the understanding of the organizational structures of peronism, Argentine dominant political force, on the basis of a study on partisan appointments. It presents the main findings of a research on the scope, the workings, the motivations, and the criteria of partisan appointments in the Argentine state, with particular attention to Néstor Kirchner administration (2003-2007. The more general argument contends that appointments became in this period a crucial tool to control the state apparatus while, at the same time, they made it possible to renovate Peronist partisan elites under the leadership of the president. The data, obtained from a large series of expert interviews, make it possible to offer a new theoretical framework for the understanding of party-government linkages in contemporary Argentine democracy.

  4. La pausa e l'infinito. I cardini dell'improvvisazione nel tango

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