Fifty years contribution to research and technological development of Argentina. Part 6

International Nuclear Information System (INIS)

Aguirre, Fernando; Boselli, Alfredo; Colangelo, Luis J.; Coll, Jorge A.; Espejo, Hector; Mattei, Clara E.; Ornstein, Roberto M.; Palacios, Tulio A.; Radicella, Renato; Rodrigo, Felix

2004-01-01

The paper is the sixth part of a short history of the National Atomic Energy Commission (CNEA). The international relations and the nuclear technology exports of the CNEA are reviewed. A short description of the Argentine nuclear centers and nuclear enterprises is also given. The present structure of the CNEA is briefly outlined. (author)

The projects for heavy water production of the Argentine National Atomic Energy Commission

International Nuclear Information System (INIS)

Garcia Bourg, J.M.; Garcia, E.E.

1982-01-01

The bases and scope of the projects for heavy water production that are being currently developed by the Argentine National Atomic Energy Commission (CNEA) are described. As an introduction, the following points are presented: a) the fundamentals of heavy water utilization in a nuclear reactor, with a mention of its properties and uses, b) a review of the physicochemical bases of the principal methods for heavy water production: chemical exchange (monothermal and bithermal processes), distillation and electrolysis, with tables summarizing the fundamental characteristics of the first two ones, and an evaluation of the different production methods from the viewpoint of their application in an industrial scale; and c) a synthetic information, in the form of tables, about the world's heavy water production. The subject of heavy water production in Argentina is treated in the principal section, describing the scope, location, main characteristics and chemical processes corresponding to the projects being developed by CNEA, which currently are the installation of an Industrial Plant in Arroyito (Province of Neuquen), purchased on a turnkey basis and using the NH 3 /H 2 isotopic exchange method; the installation of an Experimental Plant in Atucha (Province of Buenos Aires), for the development of the domestic technology of heavy-water production by the SH 2 /H 2 O isotopic exchange method, and the development of the engineering of an industrial plant (''Module 80''), based on the Experimental Plant's technology. (M.E.L.) [es

New nuclear data service at CNEA: retrieval of the update libraries from a local Web-Server; Nuevo servicio de datos nucleares en CNEA: obtencion de bibliotecas actualizadas desde un Servidor Local

Energy Technology Data Exchange (ETDEWEB)

Suarez, Patricia M [Comision Nacional de Energia Atomica, Ezeiza (Argentina). Centro Atomico Ezeiza; Pepe, Maria E [Comision Nacional de Energia Atomica, General San Martin (Argentina). Centro Atomico Constituyentes; Sbaffoni, Maria M [Comision Nacional de Energia Atomica, Buenos Aires (Argentina). Gerencia de Tecnologia

2000-07-01

A new On-line Nuclear Data Service was implemented at National Atomic Energy Commission (CNEA) Web-Site. The information usually issued by the Nuclear Data Section of IAEA (NDS-IAEA) on CD-ROM, as well as complementary libraries periodically downloaded from the a mirror server of NDS-IAEA Service located at IPEN, Brazil are available on the new CNEA Web page. In the site, users can find numerical data on neutron, charged-particle, and photonuclear reactions, nuclear structure, and decay data, with related bibliographic information. This data server is permanently maintained and updated by CNEA staff members. This crew also offers assistance on the use and retrieval of nuclear data to local users. (author)

Irradiation of Argentine MOX fuels: Post-irradiation results and analysis

International Nuclear Information System (INIS)

Marino, A.C.; Perez, E.; Adelfang, P.

1997-01-01

The irradiation of the first Argentine prototypes of PHWR MOX fuels began in 1986. These experiments were made in the HFR-Petten reactor, Holland. The rods were prepared and controlled in the CNEA's facility. The postirradiation examinations were performed in the Kernforschungszentrum, Karlsruhe, Germany and in the JRC, Petten. The first rod has been used for destructive pre-irradiation analysis. The second one as a pathfinder to adjust systems in the HFR. Two additional rods including iodine doped pellets were intended to simulate 15000 MWd/T(M) burnup. The remaining two rods were irradiated until 15000 MWd/T(M) (BU15 experiment). One of them underwent a final ramp with the aim of verifying fabrication processes and studying the behaviour under power transients. BACO code was used to define the power histories and to analyze the experiments. This paper presents the postirradiation examinations for the BU15 experiments and a comparison with the BACO outputs for the rod that presented a failure during the ramp test of the BU15 experiment. (author). 17 refs, 30 figs, 5 tabs

Implementation of the TDCR liquid scintillation method at CNEA-LMR, Argentina.

Science.gov (United States)

Arenillas, Pablo; Cassette, Philippe

2006-01-01

During the last two years, a triple-to-double coincidence ratio (TDCR) system was assembled and adjusted at the CNEA-LMR, Argentina. The new counting system will add complementary capabilities to the absolute measurements section of the CNEA-LMR. This work describes its implementation and validation. Several checks and a set of beta-emitting standard solutions were used in order to perform the validation experiments. In preliminary measurements, a 3H LNHB solution with reference activity concentration of (119.7+/-0.9) kBq/g on 11 November 2003 was used. The CNEA-LMR TDCR counter gave, at the same reference date, an activity concentration of (120+/-1) kBq/g. Results and improvements are presented in detail. Concerning the asymmetry of the system, the quantum efficiency of the three photomultiplier tubes was studied for different operating conditions of the focusing voltage. The counter also includes an automatic system to change the efficiency by defocusing the photomultipliers and on the other hand, it was coupled to a HPGe detector to also measure beta-gamma coincidences.

Implementation of the TDCR liquid scintillation method at CNEA-LMR, Argentina

Energy Technology Data Exchange (ETDEWEB)

Arenillas, Pablo [Laboratorio de Metrologia de Radioisotopos, Comision Nacional de Energia Atomica (Argentina); Cassette, Philippe [Laboratoire National Henri Becquerel, LNE-LNHB, 91191, Gif sur Yvette cedex (France)

2006-10-15

During the last two years, a triple-to-double coincidence ratio (TDCR) system was assembled and adjusted at the CNEA-LMR, Argentina. The new counting system will add complementary capabilities to the absolute measurements section of the CNEA-LMR. This work describes its implementation and validation. Several checks and a set of beta-emitting standard solutions were used in order to perform the validation experiments. In preliminary measurements, a {sup 3}H LNHB solution with reference activity concentration of (119.7{+-}0.9) kBq/g on 11 November 2003 was used. The CNEA-LMR TDCR counter gave, at the same reference date, an activity concentration of (120{+-}1) kBq/g. Results and improvements are presented in detail. Concerning the asymmetry of the system, the quantum efficiency of the three photomultiplier tubes was studied for different operating conditions of the focusing voltage. The counter also includes an automatic system to change the efficiency by defocusing the photomultipliers and on the other hand, it was coupled to a HPGe detector to also measure beta-gamma coincidences.

Implementation of the TDCR liquid scintillation method at CNEA-LMR, Argentina

International Nuclear Information System (INIS)

Arenillas, Pablo; Cassette, Philippe

2006-01-01

During the last two years, a triple-to-double coincidence ratio (TDCR) system was assembled and adjusted at the CNEA-LMR, Argentina. The new counting system will add complementary capabilities to the absolute measurements section of the CNEA-LMR. This work describes its implementation and validation. Several checks and a set of beta-emitting standard solutions were used in order to perform the validation experiments. In preliminary measurements, a 3 H LNHB solution with reference activity concentration of (119.7±0.9) kBq/g on 11 November 2003 was used. The CNEA-LMR TDCR counter gave, at the same reference date, an activity concentration of (120±1) kBq/g. Results and improvements are presented in detail. Concerning the asymmetry of the system, the quantum efficiency of the three photomultiplier tubes was studied for different operating conditions of the focusing voltage. The counter also includes an automatic system to change the efficiency by defocusing the photomultipliers and on the other hand, it was coupled to a HPGe detector to also measure beta-gamma coincidences

Validation of Neutron Calculation Codes and Models by means of benchmark cases in the frame of the Binational Commission of Nuclear Energy. Criticality Experiments

International Nuclear Information System (INIS)

Dos Santos, Adimir; Siqueira, Paulo de Tarso D.; Andrade e Silva, Graciete Simões; Grant, Carlos; Tarazaga, Ariel E.; Barberis, Claudia

2013-01-01

In year 2008 the Atomic Energy National Commission (CNEA) of Argentina, and the Brazilian Institute of Energetic and Nuclear Research (IPEN), under the frame of Nuclear Energy Argentine Brazilian Agreement (COBEN), among many others, included the project “Validation and Verification of Calculation Methods used for Research and Experimental Reactors . At this time, it was established that the validation was to be performed with models implemented in the deterministic codes HUEMUL and PUMA (cell and reactor codes) developed by CNEA and those ones implemented in MCNP by CNEA and IPEN. The necessary data for these validations would correspond to theoretical-experimental reference cases in the research reactor IPEN/MB-01 located in São Paulo, Brazil. The staff of the group Reactor and Nuclear Power Studies (SERC) of CNEA, from the argentine side, performed calculations with deterministic models (HUEMUL-PUMA) and probabilistic methods (MCNP) modeling a great number of physical situations of de reactor, which previously have been studied and modeled by members of the Center of Nuclear Engineering of the IPEN, whose results were extensively provided to CNEA. In this paper results for critical configurations are shown. (author)

New nuclear data service at CNEA: retrieval of the update libraries from a local Web-Server

International Nuclear Information System (INIS)

Suarez, Patricia M.; Pepe, Maria E.; Sbaffoni, Maria M.

2000-01-01

A new On-line Nuclear Data Service was implemented at National Atomic Energy Commission (CNEA) Web-Site. The information usually issued by the Nuclear Data Section of IAEA (NDS-IAEA) on CD-ROM, as well as complementary libraries periodically downloaded from the a mirror server of NDS-IAEA Service located at IPEN, Brazil are available on the new CNEA Web page. In the site, users can find numerical data on neutron, charged-particle, and photonuclear reactions, nuclear structure, and decay data, with related bibliographic information. This data server is permanently maintained and updated by CNEA staff members. This crew also offers assistance on the use and retrieval of nuclear data to local users. (author)

Validation of Neutron Calculation Codes and Models by means of benchmark cases in the frame of the Binational Commission of Nuclear Energy. Probabilistic Models

International Nuclear Information System (INIS)

Dos Santos, Adimir; Siqueira, Paulo de Tarso D.; Andrade e Silva, Graciete Simões; Grant, Carlos; Tarazaga, Ariel E.; Barberis, Claudia

2013-01-01

In year 2008 the Atomic Energy National Commission (CNEA) of Argentina, and the Brazilian Institute of Energetic and Nuclear Research (IPEN), under the frame of Nuclear Energy Argentine Brazilian Agreement (COBEN), among many others, included the project “Validation and Verification of Calculation Methods used for Research and Experimental Reactors . At this time, it was established that the validation was to be performed with models implemented in the deterministic codes HUEMUL and PUMA (cell and reactor codes) developed by CNEA and those ones implemented in MCNP by CNEA and IPEN. The necessary data for these validations would correspond to theoretical-experimental reference cases in the research reactor IPEN/MB-01 located in São Paulo, Brazil. The staff of the group Reactor and Nuclear Power Studies (SERC) of CNEA, from the argentine side, performed calculations with deterministic models (HUEMUL-PUMA) and probabilistic methods (MCNP) modeling a great number of physical situations of de reactor, which previously have been studied and modeled by members of the Center of Nuclear Engineering of the IPEN, whose results were extensively provided to CNEA. In this paper results of comparison of calculated and experimental results for critical configurations, temperature coefficients, kinetic parameters and fission rates evaluated with probabilistic models spatial distributions are shown. (author)

Validation of Neutron Calculation Codes and Models by means of benchmark cases in the frame of the Binational Commission of Nuclear Energy. Kinetic Parameters, Temperature Coefficients and Power Distribution

International Nuclear Information System (INIS)

Dos Santos, Adimir; Siqueira, Paulo de Tarso D.; Andrade e Silva, Graciete Simões; Grant, Carlos; Tarazaga, Ariel E.; Barberis, Claudia

2013-01-01

In year 2008 the Atomic Energy National Commission (CNEA) of Argentina, and the Brazilian Institute of Energetic and Nuclear Research (IPEN), under the frame of Nuclear Energy Argentine Brazilian Agreement (COBEN), among many others, included the project “Validation and Verification of Calculation Methods used for Research and Experimental Reactors . At this time, it was established that the validation was to be performed with models implemented in the deterministic codes HUEMUL and PUMA (cell and reactor codes) developed by CNEA and those ones implemented in MCNP by CNEA and IPEN. The necessary data for these validations would correspond to theoretical-experimental reference cases in the research reactor IPEN/MB-01 located in São Paulo, Brazil. The staff of the group Reactor and Nuclear Power Studies (SERC) of CNEA, from the argentine side, performed calculations with deterministic models (HUEMUL-PUMA) and probabilistic methods (MCNP) modeling a great number of physical situations of de reactor, which previously have been studied and modeled by members of the Center of Nuclear Engineering of the IPEN, whose results were extensively provided to CNEA. In this paper results of comparison of calculated and experimental results for temperature coefficients, kinetic parameters and fission rates spatial distributions are shown. (author)

Human resources development: capabilities and experience of CNEA and its institutes in Argentina

International Nuclear Information System (INIS)

Sbaffoni, M.M.; Soler, S.G.; Harriague, S.

2007-01-01

Full text: The Argentinean Atomic Energy Commission (Comision Nacional de Energia Atomica - CNEA) was created in 1950. CNEA and its related companies of the nuclear sector are presently active in several fields: operation of two nuclear power plants, construction of a third one, operation of several research reactors and critical facilities, production of Mo-99 from low enrichment targets (having world leadership in that field). Argentina has also exported, in the last twenty-five years, four research reactors (the last one, OPAL in Australia, attained criticality last year), and is active in the fuel cycle (having attained maturity in high-density and very high-density fuel for research reactors, among others), in radioisotope production and in nuclear medicine. The successful attainment of these achievements has always been supported by an active policy of human resources development, either through 'on the job' training activities guided by experienced professionals and sustained on a fellowship programme, or via institutes for under and postgraduate studies. This programme not only satisfies CNEA demands, but also helps providing highly qualified personnel to the local industry and research institutions. Nowadays, the perspective for nuclear energy is promising, but for many years nuclear activities had been loosing momentum worldwide. The nuclear sector became weaker, and CNEA was not an exception. However, it never stopped its activities in educational areas, knowing that many years are needed to form a solid professional in the nuclear field, and having the conviction that, for a sustainable development of the country, nuclear energy should necessarily be part of the supply. Nuclear engineers, material scientists and technologists, physicists, radio chemists, etc., ended up working in industries, universities and R and D institutions after finishing their education, instead of joining CNEA. In 2006 the Argentinean government re-launched nuclear energy

Annual report 1986-87

International Nuclear Information System (INIS)

1987-01-01

This report issued by the Argentine National Atomic Energy Commission (CNEA) covers the two-year period 1986-1987. It describs the research and development carried out in the following fields: nuclear power plants; supplies to nuclear power plants; radioisotopes and radiations; radiological protection and nuclear safety; research and development. In the item general aspects other activities performed by CNEA are included, and in the associated firms with CNEA information on the technological development, and goods and services production is provided. (M.E.L.) [es

Research: the basis for the future

International Nuclear Information System (INIS)

Cambiaggio, Maria C.

2001-01-01

The significance of the scientific research for the technological development of a country is outlined and a short survey is given of the research activities in different fields carried out at the Argentine CNEA. The international Auger Project on very high-energy cosmic rays is described and the Argentine participation in it is also outlined

2004 status of RERTR activities of CNEA - Argentina

International Nuclear Information System (INIS)

Audero, M.; Balart, S.; Boero, N.; Cabot, P.; Manzini, A.; Pasqualini, E.; Ruggirello, G.; Taboada, H.

2005-01-01

During 2004 several activities related to RERTR topics has taken place. In what follows, a resume of those activities is presented. During 2004 the Nuclear Fuel Cycle Program has supported the activities of about a hundred of researchers and technicians involved on different aspects of Very high density fuel developpement (VHD) fuel development as R and D, mini-plates, plates and fuel assemblies fabrication, irradiation and PIE analyses of VHD fuels. CNEA's LEU MTR fuel waste disposal plans are concerned with spent fuel from the reactor RA-3. The SF will be kept in interim storage until a geological repository is available for disposal. According to the current planning, this repository would be available in the year 2050 to receive the SF from the NPPs or the HLW from their reprocessing. Since 2002 the domestic production of Mo99 and other fission radioisotopes is performed using LEU targets, fulfilling international technical and quality standards. Up to present more than 600 targets bearing LEU material have been fabricated irradiated and processed. Very recently CNEA has also become an international supplier of targets for Mo-99 production. This status report deals as well with the International framework i.e. Global Threat Reduction Initiative and the historical involvement of Argentina in the peaceful applications of nuclear energy

Institutional results of the Argentine Graduate Programme in Radiochemistry

International Nuclear Information System (INIS)

Cohen, I.M.

2006-01-01

The evolution of radiochemistry at the National Atomic Energy Commission (CNEA) in Argentina is analyzed. The antecedents of the establishment, in 1998, of the Master Programme in Radiochemistry, jointly organized by CNEA and the Buenos Aires Regional Faculty of the National Technological University are revised, and the structure of the Programme is described. On the basis of the thesis works, the initial trends are discussed. Finally, the institutional results of the Programme are described. (author)

The extension of the international trade

International Nuclear Information System (INIS)

Buch, Tomas

1998-01-01

INVAP, a company pertaining to the Rio Negro province and controlled by the National Atomic Energy Commission (CNEA), has been instrumental for the international expansion of the Argentine nuclear trade, including the provision of Argentine research reactors to Algeria and Egypt. The history of the negotiations carried out with about twenty countries is shortly summarized and the scope of the supply of the major contracts is described

Production of MO-99 from LEU targets-base-side processing

International Nuclear Information System (INIS)

Vandegrift, George F.; Koma, Yoshikazu; Cols, Hector; Conner, Cliff; Aase, Scott; Peter, Magdalin; Walker, David; Leonard, Ralph A.; Snelgrove, James L.

2000-01-01

Argonne National Laboratory (ANL) is cooperating with the Argentine Comision Nacional de Energia Atomica (CNEA) to convert their 99 Mo production process, which uses high enriched uranium (HEU), to low-enriched uranium (LEU). Progress discussed in this year's paper includes optimization of (1) the digestion of LEU foil by sodium hydroxide solution and (2) the primary recovery of molybdenum by anion exchange. Also discussed are ANL/CNEA plans for demonstrating the irradiation and digestion of LEU-foil targets and recovering 99 Mo in Argentina later this year. Our results show that, up to this point in our study, conversion of the CNEA process to LEU appears viable. (author)

Nuclear Activities in Argentina. A short Review. Part 2

International Nuclear Information System (INIS)

Coll, Jorge A.; Radicella, Renato

2002-01-01

The second part of this historical review covers the 'industrial' period of nuclear energy in Argentina. The National Atomic Energy Commission (CNEA), after a feasibility study carried out by argentine experts, in 1968 signed a contract to build a nuclear power plant. This PHWR plant, Atucha 1, of 310 MWe was inaugurated in 1973 and it is still operating. The same year the CNEA signed a new contract to build a CANDU type plant of 600 MWe, Embalse, that was finally inaugurated in 1983. The construction of a third plant, Atucha 2 of 745 MWe also a PHWR, was started in 1980 but was arrested in 1994, when more than 80% was completed, and it is still waiting a political decision to reach completion. Within the development of the nuclear power program, a fuel element production plant for the Argentine power reactors was built by the CNEA and a heavy water production plant of 250 tons/year was inaugurated in 1993 in the southern province of Neuquen. A pilot spent fuel reprocessing plant was designed but its construction was not completed. At the same time, a pilot gaseous diffusion plant was constructed in order to produce enriched uranium for research reactors. The activities in the field of radioisotope and radiation applications were also intensive, mainly in nuclear medicine and food preservation. A facility to fabricate sealed sources was built to process the Co 60 produced by the Embalse power plant. Argentina was active in the export of nuclear facilities: CNEA built a complete nuclear research center in Peru, and the Argentine company INVAP built research reactors in Algeria and Egypt. The same company is now building a research reactor in Australia. (author)

Information for irradiation and post-irradiation of the silicide fuel element prototype P-07

International Nuclear Information System (INIS)

Abbate, Maximo J.; Sbaffoni, Maria M.

2003-01-01

Included in the 'Silicides' Project, developed by the Nuclear Fuels Department of the National Atomic Energy Commission (CNEA), it is foreseen the qualification of this type of fuel for research reactors in order to be used in the Argentine RA-3 reactor and to confirm the CNEA as an international supplier. The paper presents basic information on several parameters corresponding to the new silicide prototype, called P-07, to be taken into account for its irradiation, postirradiation and qualification. (author)

Politically explosive

International Nuclear Information System (INIS)

Anon.

1979-01-01

Argentina will award the concession for 'ATUCHA II' to KWU even without an agreement on a heavy-water system. A declaration of interest will soon be signed by KWU and the Argentine atomic energy commission, CNEA. (RW) [de

Irradiation of Argentine (U,Pu)O 2 MOX fuels. Post-irradiation results and experimental analysis with the BACO code

Science.gov (United States)

Marino, Armando Carlos; Pérez, Edmundo; Adelfang, Pablo

1996-04-01

The irradiation of the first Argentine prototypes of pressurized heavy water reactor (PHWR) (U,Pu)O 2 MOX fuels began in 1986. These experiments were carried out in the High Flux Reactor (HFR)-Petten, Holland. The rods were prepared and controlled in the CNEA's α Facility. The postirradiation examinations were performed in the Kernforschungszentrum, Karlsruhe, Germany and in the Joint Research Center (JRC), Petten. The first rod has been used for destructive pre-irradiation analysis. The second one as a pathfinder to adjust systems in the HFR. Two additional rods including iodine doped pellets were intended to simulate 15 000 MWd/T(M) burnup. The remaining two rods were irradiated until 15 000 MWd/T(M). One of them underwent a final ramp with the aim of verifying fabrication processes and studying the behaviour under power transients. BACO (BArra COmbustible) code was used to define the power histories and to analyse the experiments. This paper presents a description of the different experiments and a comparison between the results of the postirradiation examinations and the BACO outputs.

Towards a strategic line of intellectual capital development for CNEA (Comision Nacional de Energia Atomica de Argentina)

International Nuclear Information System (INIS)

Lopez, M.P.; Martinez Demarco, S.; Sbaffoni, Monica; Harriague, Santiago

2009-01-01

After an extended stagnation period, during which there was a big staff reduction in the nuclear sector in general and in CNEA in particular, with no new personnel hired, ageing staff and risk of skills and knowledge loss, in 2006 the Argentinean government launched a nuclear power programme based on the necessity of expanding the national energy matrix and taking into account the general concerns about greenhouse effects. The new projects drove to CNEA to the elaboration of a ten year Strategic Plan for CNEA, which includes the activities to be performed during the period 2009-2018. Conceived with wide participation of internal areas, the definition of the strategic plan included objectives, goals, management indicators, and periodical revisions. The Intellectual Capital being a fundamental asset to reach the goals, a chapter on these subject was included, for every knowledge domain. Even if the work is still in progress, partial results and tendencies can be shown. Every area of the organization is working on the analysis of their own strengths and weaknesses in terms of intellectual capital, knowledge loss risk analysis, and definition of future needs in terms of knowledge and skills. Analyzing strengths and weaknesses, there appeared common elements to most of the areas, indicating that besides the use of specific knowledge management, education and training tools, a Strategic Line for Intellectual Capital Development should be quickly implemented, to fill in gaps and protect the current knowledge asset. This presentation summarizes the work done up to now, showing tendencies in the situation, and proposing a strategic line for intellectual capital development, to help solving major staffing problems in CNEA. (author)

Fifty years contribution to research and technological development of Argentina. Part 1

International Nuclear Information System (INIS)

Aguirre, Fernando; Boselli, Alfredo; Colangelo, Luis J.; Coll, Jorge A.; Espejo, Hector; Mattei, Clara E.; Ornstein, Roberto M.; Palacios, Tulio A.; Radicella, Renato; Rodrigo, Felix

2001-01-01

The paper is the first part of a short history of the Argentine National Atomic Energy Commission (CNEA). The activities concerning the fuel cycle are reviewed. The uranium production as well as the manufacturing of nuclear fuel elements is described. (author)

Fifty years contribution to research and technological development of Argentina. Part 2

International Nuclear Information System (INIS)

Aguirre, Fernando; Boselli, Alfredo; Colangelo, Luis J.; Coll, Jorge A.; Espejo, Hector; Mattei, Clara E.; Ornstein, Roberto M.; Palacios, Tulio A.; Radicella, Renato; Rodrigo, Felix

2002-01-01

The paper is the second part of a short history of the Argentine National Atomic Energy Commission (CNEA). The activities concerning research reactors are reviewed as well as the nuclear power program. The heavy water program is also is described. (author)

Ninth Argentine congress on biology and nuclear medicine; fourth Southernmost sessions of ALASBIMN (Latin-American Association of Biology and Nuclear Medicine); first Spanish-Argentine congress on nuclear medicine; first Argentine sessions on nuclear cardiology

International Nuclear Information System (INIS)

1991-01-01

This work deals with all the papers presented at the 9. Argentine congress on biology and nuclear medicine; IV Southernmost sessions of ALASBIMN; I Spanish-Argentine congress on nuclear medicine and I Sessions Argentine sessions on nuclear cardiology held in Buenos Aires, Argentina, from October 14 - 18, 1991

Research reactors in Argentina

International Nuclear Information System (INIS)

Carlos Ruben Calabrese

1999-01-01

Argentine Nuclear Development started in early fifties. In 1957, it was decided to built the first a research reactor. RA-1 reactor (120 kw, today licensed to work at 40 kW) started operation in January 1958. Originally RA-1 was an Argonaut (American design) reactor. In early sixties, the RA-1 core was changed. Fuel rods (20% enrichment) was introduced instead the old Argonaut core design. For that reason, a critical facility named RA-0 was built. After that, the RA-3 project started, to build a multipurpose 5 MW nuclear reactor MTR pool type, to produce radioisotopes and research. For that reason and to define the characteristics of the RA-3 core, another critical facility was built, RA-2. Initially RA-3 was a 90 % enriched fuel reactor, and started operation in 1967. When Atucha I NPP project started, a German design Power Reactor, a small homogeneous reactor was donated by the German Government to Argentina (1969). This was RA-4 reactor (20% enrichment, 1W). In 1982, RA-6 pool reactor achieved criticality. This is a 500 kW reactor with 90% enriched MTR fuel elements. In 1990, RA-3 started to operate fueled by 20% enriched fuel. In 1997, the RA-8 (multipurpose critical facility located at Pilcaniyeu) started to operate. RA-3 reactor is the most important CNEA reactor for Argentine Research Reactors development. It is the first in a succession of Argentine MTR reactors built by CNEA (and INVAP SE ) in Argentina and other countries: RA-6 (500 kW, Bariloche-Argentina), RP-10 (10MW, Peru), NUR (500 kW, Algeria), MPR (22 MW, Egypt). The experience of Argentinian industry permits to compete with foreign developed countries as supplier of research reactors. Today, CNEA has six research reactors whose activities have a range from education and promotion of nuclear activity, to radioisotope production. For more than forty years, Argentine Research Reactors are working. The experience of Argentine is important, and argentine firms are able to compete in the design and

Argentine influence on regulatory activities in Latin America

International Nuclear Information System (INIS)

Palacios, Elias

1998-01-01

An analysis of the nuclear regulatory systems and the nuclear regulations of many Latin American countries shows a substantial influence of the Argentine regulatory structure. This influence is attributed to the early Argentine development of a regulatory and control organization, the teaching of regional training courses and the advice of Argentine experts to Latin-American governments

Training in methodology and application radionuclides in the biomedical surface area

International Nuclear Information System (INIS)

Signoretta, C.

1998-01-01

The CNEA with the Biological Argentine Association and the Nuclear Medicine Association makes to the consideration the Nuclear Regulatory Authority the program a Radiotherapy c curse that will allow to form medical professionals with the purpose of obtaining the permission for the application radiopharmaceuticals in therapy

Argentine psychiatry: report on the 30th Congress.

Science.gov (United States)

Brown, Paul

2016-04-01

To give a contextualised personal account of the 30th Annual Congress of the Argentine Association of Psychiatrists. Conference attendance and analysis of talks. The congress demonstrated that Argentine psychiatry is held back by oppressive political regimes and by government underfunding. The drug companies and third-party payers are entering the vacuum. Argentine trainees and consultants feel ill-prepared to meet the demands of the biomedical psychiatry. © The Royal Australian and New Zealand College of Psychiatrists 2015.

Argentine intercomparison programme for personal dosimetry

International Nuclear Information System (INIS)

Gregori, B.N.; Papadopulos, S.B.; Cruzate, J.; Kunst, J.J.; Saravi, M.

2005-01-01

Full text: In 1997 began in Argentine, sponsored by Nuclear Regulatory Authority (ARN) the intercomparison program for personal dosimetry laboratories, on a voluntary basis. Up to know 6 exercises have been done. The program began with a workshop to present the quantities, personal dose equivalent, Hp(10) and extremities dose equivalent, Hs(d). The first aim of this program was to know the true sate of personal dosimetry laboratories in the country, and then introduce the personal dose equivalent, Hp(10) into the dose measurements. The Regional Reference Center for Dosimetry (CCR), belonging to CNEA and the Physical Dosimetry Laboratory of ARN performed the irradiation. Those were done air free and on ICRU phantom, using x-ray, quality ISO: W60, W110 and W200; and 137 Cs and 60 Co gamma rays. The irradiation was made following ISO 4037 (2) recommendations. There are studied the dose, energy and angular response of the different measuring system. The range of the dose analyzed was from 0.2 mSv up to 80 mSv. The beam incidence was normal and also 20 o and 60 o . The dosimeters irradiation's were performed kerma in free in air and in phantom in order to study the availability of the service to evaluate the behavior as a function of kerma free in air or Hp(10). At the same time several items have been asked to each participant referring to the action range, the detectors characteristics, the laboratory procedures, the existence of an algorithm and its use for the dosimeter evaluation and the wish to participate in a quality assurance program. The program worked in writing a standard of personal dosimetry laboratories, that was published in 2001. In this work the results of each laboratory and its performance based on the ICRP-60 and ICRP-35 acceptance criteria are shown. Also the laboratory evolution and inquiry analyses have been included. (author)

The consolidation of the Bariloche Atomic Center: an approach from the development of the experimental physics

International Nuclear Information System (INIS)

Garcia, Marisa C.; Reising, Ailin M.

2002-01-01

The paper investigates the origins of the Center and of the Institute of Physics 'Jose Antonio Balseiro' from the reconstruction of the experimental research programs that were developed between the years 1955 and 1962 in those organizations of the Argentine Atomic Energy Commission (CNEA). Within that intention the paper analyzes the scientific policy of the Institute of Physics and its relations with the CNEA as well as the strategy of resolution of the economic and institutional crisis that affected them between 1958 and 1959. Its incidence in the consolidation of the research programs is also examined

The application of radioisotopes in the Argentine technology

International Nuclear Information System (INIS)

Baro, G.B.; Lazor, C.J.

1976-10-01

The different applications of radioisotopes: as sealed sources or tracers, as well as activation analysis have cast a new light on Argentine engineering and industry. The Argentine Atomic Energy Commission is carrying out an active plan for the developement and promotion of these techniques since the 60's. This report describes and analyzes the most outstanding applications, and brings up to date other previous papers on the same subject. It suggests some ideas for achieving a complete penetration of radioisotope techniques into Argentine technology. It also outlines some future perspectives, based on present statistical data. (author) [es

Annual Report 1980

International Nuclear Information System (INIS)

1982-01-01

The advances in the execution of the Argentine Nuclear Program, performed by CNEA during 1980, are reported. The information is grouped in six sections: Nuclear Power Plants, Supplies to Nuclear Power Plants, Radioisotopes and Radiations, Research and Development, Radiological Protection and Nuclear Safety, and Infrastructure and General Aspects. (M.E.L.) [es

Annual Report 1981

International Nuclear Information System (INIS)

1983-01-01

The advances in the execution of the Argentine Nuclear Program, performed by CNEA during 1981, are reported. The information is grouped in six sections: Nuclear Power Plants, Supplies to Nuclear Power Plants, Radioisotopes and Radiations, Research and Development, Radiological Protection and Nuclear Safety, and Infrastructure and General Aspects. (M.E.L.) [es

Annual Report 1982

International Nuclear Information System (INIS)

1983-01-01

The advances in the execution of the Argentine Nuclear Program, performed by CNEA during 1982, are reported. The information is grouped in six sections: Nuclear Power Plants, Supplies to Nuclear Power Plants, Radioisotopes and Radiations, Research and Development, Radiological Protection and Nuclear Safety, and Infrastructure and General Aspects. (M.E.L.) [es

Reactivation of the Argentine nuclear plan

International Nuclear Information System (INIS)

Rey, Francisco C.

2007-01-01

The Argentine Government, in a ceremony held at the Government House and headed by the President of the Republic, announced on the 23th. of August, 2006 a new plan for the nuclear activity. The Argentine Atomic Energy Commission considers this plan as the relaunching of the nuclear activity in the country, made with a clear strategic vision and based on the same premises took into account fifty seven years ago when the Atomic Energy Commission was created. (author) [es

Lab of conservation and restoration of paper collections of CNEA: gamma radiation treatment of books and documents affected by microorganisms

International Nuclear Information System (INIS)

Alfaro, Laura; Miranda, Maria V.; Gonzalez, Maria E.; Calvo, Ana M.

2009-01-01

In 2005 the CNEA's Laboratory of Conservation and Restoration of Paper Collections was inaugurated at the Ezeiza Atomic Centre. This lab takes advantage of the experience of CNEA in the utilization of the biocide effects of gamma radiation for decontamination and sterilization of different products, mainly medical products. In recent years the application of gamma radiation to the other goods was explored. Gamma radiation can be utilized for disinfection in the case of biological contamination, such as contamination of books and documents by fungi or insects, and in the case of some disasters (inundation or fire controlled with water in libraries and archives) to prevent the growing of fungi and pathogenic bacteria. (author) [es

Trail pheromone of the Argentine ant, Linepithema humile (Mayr (Hymenoptera: Formicidae.

Directory of Open Access Journals (Sweden)

Dong-Hwan Choe

Full Text Available The Argentine ant (Linepithema humile is recognized as one of the world's most damaging invasive species. One reason for the ecological dominance of introduced Argentine ant populations is their ability to dominate food and habitat resources through the rapid mobilization and recruitment of thousands of workers. More than 30 years ago, studies showed that (Z-9-hexadecenal strongly attracted Argentine ant workers in a multi-choice olfactometer, suggesting that (Z-9-hexadecenal might be the trail pheromone, or a component of a trail pheromone mixture. Since then, numerous studies have considered (Z-9-hexadecenal as the key component of the Argentine ant trails. Here, we report the first chemical analyses of the trails laid by living Argentine ants and find that (Z-9-hexadecenal is not present in a detectible quantity. Instead, two iridoids, dolichodial and iridomyrmecin, appear to be the primary chemical constituents of the trails. Laboratory choice tests confirmed that Argentine ants were attracted to artificial trails comprised of these two chemicals significantly more often than control trails. Although (Z-9-hexadecenal was not detected in natural trails, supplementation of artificial dolichodial+iridomyrmecin trails with an extremely low concentraion of (Z-9-hexadecenal did increase the efficacy of the trail-following behavior. In stark contrast with previous dogma, our study suggests that dolichodial and iridomyrmecin are major components of the Argentine ant trail pheromone. (Z-9-hexadecenal may act in an additive manner with these iridoids, but it does not occur in detectable quantities in Argentine ant recruitment trails.

Carbohydrate supply limits invasion of natural communities by Argentine ants.

Science.gov (United States)

Rowles, Alexei D; Silverman, Jules

2009-08-01

The ability of species to invade new habitats is often limited by various biotic and physical factors or interactions between the two. Invasive ants, frequently associated with human activities, flourish in disturbed urban and agricultural environments. However, their ability to invade and establish in natural habitats is more variable. This is particularly so for the invasive Argentine ant (Linepithema humile). While biotic resistance and low soil moisture limits their invasion of natural habitats in some instances, the effect of food availability has been poorly explored. We conducted field experiments to determine if resource availability limits the spread and persistence of Argentine ants in remnant natural forest in North Carolina. Replicated transects paired with and without sucrose solution feeding stations were run from invaded urban edges into forest remnants and compared over time using baits and direct counts at feeding stations. Repeated under different timing regimes in 2006 and 2007, access to sucrose increased local Argentine ant abundances (1.6-2.5 fold) and facilitated their progression into the forest up to 73 +/- 21% of 50-m transects. Resource removal caused an expected decrease in Argentine ant densities in 2006, in conjunction with their retreat to the urban/forest boundary. However, in 2007, Argentine ant numbers unexpectedly continued to increase in the absence of sugar stations, possibly through access to alternative resources or conditions not available the previous year such as honeydew-excreting Hemiptera. Our results showed that supplementing carbohydrate supply facilitates invasion of natural habitat by Argentine ants. This is particularly evident where Argentine ants continued to thrive following sugar station removal.

11. Argentine Congress of Radiological and Nuclear Security

International Nuclear Information System (INIS)

2017-01-01

The 11. Argentine Congress of Radiological and Nuclear Security was organized by the Radioprotection Argentine Society, in Buenos Aires, between the 5 and 6, October 2017. In this event, were presented documents about any of these topics: security systems, licensing of nuclear power plants, criticality accidents, biological radiation effects, NORM, acute radiation syndrome, etc.

The worldwide expansion of the Argentine ant

DEFF Research Database (Denmark)

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

2010-01-01

Aim The aim of this study was to determine the number of successful establishments of the invasive Argentine ant outside native range and to see whether introduced supercolonies have resulted from single or multiple introductions. We also compared the genetic diversity of native versus introduced...... supercolonies to assess the size of the propagules (i.e. the number of founding individuals) at the origin of the introduced supercolonies. Location Global. Methods We used mitochondrial DNA (mtDNA) markers and microsatellite loci to study 39 supercolonies of the Argentine ant Linepithema humile covering both......) 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...

IFPE/CNEA-MOX-RAMP, CNEA Power Ramp Irradiations with (PHWR) MOX Fuels

International Nuclear Information System (INIS)

Marino, Armando Carlos; Turnbull, J.A.

2000-01-01

Description: The irradiation of the first MOX nuclear fuel rods fabricated in Argentina began in 1986. These experiences were made in the HFR-Petten reactor, Holland. The six rods were fabricated in the a Facility (GAID-CNEA-Argentina). The first rod has been used for destructive pre-irradiation characterization in the KFK (Kernforschungszentrum Karlsruhe), Germany. The second one was a pathfinder for calibrating HFR systems in Petten. Two other rods included pellets doped with iodine. The first contained mostly CsI whilst the second contained elemental iodine. The concentration of iodine was intended to simulate a burn-up of 15000 MWd/ton(M). The power histories were defined from calculations performed with the BACO code. A 15 day cycle was assumed with a power history that induced PCMI during power cycling. The last high power period was maintained until stress corrosion cracking (SCC) was induced. Two further un-doped rods were used in a sub-program named BU15. Here a burn-up of 15000 MWd/ton(M) was achieved at a low power followed by a final power ramp for one of the rods. The ramp was similar to that used for the Iodine test. The HFR irradiation was conducted satisfactorily. The objective was to attempt a correspondence in behaviour between the doped rods and BU15 rods. PIE detected the presence of micro-cracks inside the cladding of the iodine doped rods. Ramping of the BU15 rod was interrupted when an increase of coolant activity was detected. After discharge, a visual inspection of the rod showed the presence of a small circular hole in the cladding. Additional PIE showed that the hole was due to a SCC failure

Annual report 1983

International Nuclear Information System (INIS)

1985-01-01

The advances in the execution of the Argentine Nuclear Program, performed by the National Atomic Energy Commission (CNEA) during 1983 are reported. The information is grouped in six sections: Nuclear Power Plants, Supplies to Nuclear Power Plants, Radioisotopes and Radiations, Research and Development, Radiological Protection and Nuclear Safety, and Infrastructure and General Aspects. (M.E.L.) [es

Argentine National Pharmacopoeia (Argentine Codex Medicamentarius). 6. ed., suppl. 1982.

International Nuclear Information System (INIS)

1983-02-01

Standards of mandatory application, established by Law No. 22729 of February, 1983, on radiopharmaceuticals and radiosterilization of products for medical use, issued as a supplement to the text of the Argentine National Pharmacopoeia. In particular, the general characteristics, identification and purity tests, radioactivity valuation, top date of utilization, and form of conservation of different radiopharmaceuticals are described. (C.A.K.) [es

Argentine hydrothermal panorama

Energy Technology Data Exchange (ETDEWEB)

1976-12-01

An attempt is made to give a realistic review of Argentine thermal waters. The topics discussed are the characteristics of the hydrothermal resources, classification according to their mineral content, hydrothermal flora and fauna, uses of hydrothermal resources, hydrothermal regions of Argentina, and meteorology and climate. A tabulation is presented of the principal thermal waters. (JSR)

National law of the nuclear activity of the Argentine Republic. (Sanctioned on April 2, 1997 and partially promulgated on April 23, 1997; B.O. 25-Apr-1997)

International Nuclear Information System (INIS)

1997-01-01

The Argentine National State, will establish the nuclear policy and perform the functions of research, development, regulation and supervision through two organisations, the National Atomic Energy Commission (CNEA) and the Nuclear Regulatory Authority (ARN). The National Atomic Energy Commission will continue to function as an autonomous entity, depending from the Ministry of Culture and Education of the Nation. Among the activities under its responsibility it will have to advise the National Executive Power on nuclear policy issues, promote the training of highly-specialised human resources, scientific and technological developments, execute development programs, promote programs for technological innovation, perform the responsibility for radiation waste management, etc. The Nuclear Regulatory Authority will act as an aunotomous entity in the jurisdiction of the Presidency of the Nation and will be responsible for the functions of regulation and control of the nuclear activity in everything which is related to radiological and nuclear safety, physical protection and control of the use of nuclear materials, nuclear facilities, licensing and international safeguards and give advise to the National Executive Power. Both institutions will depend from a Board of Directors composed by six members, one of which will be the Chairman and they will be responsible for the actions to comply with the objectives and functions mentioned above. In its last chapter, the law declares as subject to the privatisation the activities of nuclear energy generation presently developed by Nucleoelectrica Argentina Sociedad Anonima (NASA), as well as the Nuyclear Fuel Cycle used for the nuclear energy generation for industry or research and the Production of Radioisotopes developed by CNEA. This law revokes the articles numbers 2, 5, 9, 11, 16 and 17 of the Decree-Law N' 22.498/56 (B.O. 28-Dec-1956)

CNEA/ANL collaboration program to develop an optimized version of DART validation and assessment by means of U3 Six and U3 O8-Al dispersed CNEA mini plate irradiation behavior

International Nuclear Information System (INIS)

Solis, Diego; Taboada, Horacio; Rest, Jeffrey

1998-01-01

The DART code is based upon a thermochemical model that can predict swelling, recrystallization, fuel-meat interdiffusion and other issues related with MTR dispersed FE behavior under irradiation. As a part of a common effort to develop an optimized version of DART, a comparison between DART predictions and CNEA miniplates irradiation experimental data was made. The irradiation took place during 1981-82 for U3O8 miniplates and 1985-86 for U 3 Si x at Oak Ridge Research Reactor. (author)

Plantear utopías: La formación de la comunidad científica: CNEA (1950-1955

Directory of Open Access Journals (Sweden)

Zulema Marzorati

2003-12-01

Full Text Available En 1950 se creó en la Argentina la Comisión Nacional de Energía Atómica. En ella se fue conformando una comunidad científica que luego de su participación en la Primera Conferencia "Átomos para la Paz" realizada en Ginebra en 1955, fue reconocida por sus pares a nivel internacional. Nuestro objetivo es analizar el desarrollo científico-tecnológico alcanzado en la CNEA por ese conjunto de científicos durante su etapa inicial. En la investigación, además de la utilización de fuentes escritas convencionales y bibliografía, se han realizado entrevistas a científicos nucleares que actuaron en ese período, con la intención de obtener una mayor comprensión sobre las prácticas de los actores sociales y acerca de la relación entre el contexto histórico y la institución.The International Board of Atomic Energy (Comisión Nacional de Energía Atómica - CNEA was created in 1950. In this way a scientific community was established in it. After its participation in The First International Conference "Atoms for Peace" which was held in Geneva in 1955, this scientific community was acknowledged by its peers all over the world. Our aim is to analyze the scientific- technological development achieved by those scientists in the CNEA in its early stages. This investigation has developed conventional written resources, compiled bibliography and has interviewed some nuclear scientists who worked in that period, to achieve a better understanding of the social actors' practice and about the relation between the historical context and the institution.

Temporary storage facility for spent nuclear fuels at the Atucha I nuclear power station (CNA)

International Nuclear Information System (INIS)

Wasinger, K.

1983-01-01

According to plans of the Argentine Atomic Energy Commission (CNEA), the spent nuclear fuel elements of the Atucha I Nuclear Power Station are to be stored temporarily pending a decision about the ultimate disposal concept. The holding capacity of the first fuel storage facility built by the German KWU together with the whole power plant had been expanded in 1978 to a level good until mid-1982. In 1977, KWU drafted the concept of another fuel storage facility. Like the first one, it was designed as a wet storage system attached to the power plant installations and had a holding capacity of 6944 fuel elements, which corresponds to some 1100 te of uranium. This extends the storage capacity up until 1996. In 1978, KWU was commissioned by CNEA to plan the whole facility and deliver the mechanical and electrical equipment. CNEA themselves assumed responsibility for the construction work. The second fuel storage facility was commissioned three years after the start of construction. (orig.) [de

Adaptation au stress hydrique dans le Comahue, en Argentine ...

International Development Research Centre (IDRC) Digital Library (Canada)

Adaptation au stress hydrique dans le Comahue, en Argentine. On prévoit que les changements climatiques entraîneront une diminution des précipitations annuelles dans le Comahue, une région du centre-ouest de l'Argentine. Conjugué à la hausse prévue de la demande en eau et de l'utilisation de la ressource, ...

Activities for the life management of nuclear power plant in Argentina

International Nuclear Information System (INIS)

Chocron, M.; Fabbri, S.; Versaci, R.A.

2003-01-01

Since September 1994 the organisation of Argentine nuclear power activities includes the following entities: Argentine Nucleo Electric S.A (NASA) with operates two NPPs (Atucha-1 and Embalse), National Regulatory Board of Nuclear Activities (ARN), National Atomic Energy Commission Commission (CNEA) Within this scheme, one of the main activities undertaken by CNEA is to provide technological assistance to NASA for NPP operation. Works on Life Management of NPPs are included in these activities. In the past, NPP Life Management in Argentina was mainly based on the corrective maintenance concept based on the replacement of damaged part detected during the periodical outages. In recent times, as a consequential of an increasing concern about ageing a Subprogram was created to take care of these subjects. The subprogram, now in the first steps, comprise several tasks: The first task involves the identification of components ageing mechanism and materials likely to age. In the area of mechanical components. a starting point is matrix involving major components such as: Reactor Pressure Vessel, Reactor Internals, Steam Generators, Pressure Tubes, Piping, etc. In this work the apply methodology for the selection of the components will be presented. (Full text)

Evaluation of the international restraints and limitations on the Argentine nuclear policy

International Nuclear Information System (INIS)

Martin, Hugo R.

2002-01-01

The first part of the book makes a short description of the nuclear development in the 20th. Century in the international, Latin American and Argentine frameworks. The second part outlines the relationship between the nuclear technology and the international relations in the light of the different theoretical models of international relations. Finally the third part analyzes in the international context the Argentine nuclear policy, from the presidency of J. D. Peron that of C. Menem. The international restraints to the Argentine nuclear policy are also described

Accreditation of testing laboratories in CNEA (National Atomic Energy Commission)

International Nuclear Information System (INIS)

Piacquadio, N.H.; Casa, V.A.; Palacios, T.A.

1993-01-01

The recognition of the technical capability of a testing laboratory is carried out by Laboratory Accreditation Bodies as the result of a satisfactory evaluation and the systematic follow up of the certified qualification. In Argentina the creation of a National Center for the Accreditation of Testing Laboratories, as a first step to assess a National Accreditation System is currently projected. CNEA, as an institution involved in technological projects and in the development and production of goods and services, has adopted since a long time ago quality assurance criteria. One of their requirements is the qualification of laboratories. Due to the lack of a national system, a Committee for the Qualification of Laboratories was created jointly by the Research and Development and Nuclear Fuel Cycle Areas with the responsibility of planning and management of the system evaluation and the certification of the quality of laboratories. The experience in the above mentioned topics is described in this paper. (author)

Radioactive wastes and spent fuels management in Argentina

International Nuclear Information System (INIS)

Maset, Elvira R.

2006-01-01

CNEA was created in 1950 and since then has carried out research and development activities, production of radioisotopes, medical and industrial applications, and those activities related with the nuclear fuel cycle, including the operation of two nuclear power stations. More ever, different public and private institutions use radioactive materials in medical, industrial and research activities. These activities generate different types of radioactive waste, desuse sealed sources and spent fuel. The management of radioactive waste of all types produced in the country, as the spent nuclear fuel of power and research reactors and the used radioactive sources was always and it is at present a CNEA's responsibility. In February 2003, according to the Law No. 25.018, called 'Management of Radioactive Waste Regimen', the 'Radioactive Waste Management National Programme' was created by CNEA to fulfill the institutional functions and responsibilities established in the Law, in order to guarantee the safe management of radioactive waste according to the regulations established by the Argentine Nuclear Regulatory Agency and to the legislation in force. (author) [es

Production of radionuclides and radiopharmaceuticals at the Argentine Atomic Energy National Commission

International Nuclear Information System (INIS)

Mitta, A.E.A.; Bonetto, Oscar; Kurcbart, Horacio; Mancini, Alberto; Marquez, R.O.; Palcos, M.C.; Quihillalt, E.L.; Salas, G.N.B. de; Suner, A.A.; Troparevsky, M.L.P. de.

1978-03-01

The production of radionuclides and radiopharmaceuticals at the CNEA is described, as well as the preparation of reagent's sets, and informations is given on the preparation of Tc-99m and In-113m generators. Some figures of the production of 1974-1976 are given. (author) [es

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…

Adequacy features of Nucleoelectrica Argentina Safety Management

Energy Technology Data Exchange (ETDEWEB)

Rapoport, H [Nucleoelectrica Argentina S.A., Buenso Aires (Argentina)

1997-12-01

The Argentine Nuclear Power Plants (NPP) ATUCHA I (357 Mw, SIEMENS) and EMBALSE (648 Mw, CANDU), both of PHWR type, were owned and operated until August 94 by the Comision Nacional de Energia Atomica (CNEA). Until that date, CNEA, the national agency for nuclear R and D, concentrated three activities or roles: Research, Nuclear Regulations and NPP Operation. Since August 1994 NPP`s are owned and operated by a state electrical company (Nucleoelectrica Argentina S.A.) the nuclear utility supplying 15% of the national electrical generation demand. NASA is going to be privatized according to a recent national law regulating nuclear activities. The transition from a research agency to a commercial company requires the introduction of changes in the management of activities. Mention of these changes is limited to those relating to Safety.

Adequacy features of Nucleoelectrica Argentina Safety Management

International Nuclear Information System (INIS)

Rapoport, H.

1997-01-01

The Argentine Nuclear Power Plants (NPP) ATUCHA I (357 Mw, SIEMENS) and EMBALSE (648 Mw, CANDU), both of PHWR type, were owned and operated until August 94 by the Comision Nacional de Energia Atomica (CNEA). Until that date, CNEA, the national agency for nuclear R and D, concentrated three activities or roles: Research, Nuclear Regulations and NPP Operation. Since August 1994 NPP's are owned and operated by a state electrical company (Nucleoelectrica Argentina S.A.) the nuclear utility supplying 15% of the national electrical generation demand. NASA is going to be privatized according to a recent national law regulating nuclear activities. The transition from a research agency to a commercial company requires the introduction of changes in the management of activities. Mention of these changes is limited to those relating to Safety

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

International Nuclear Information System (INIS)

2011-01-01

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

Argentines abroad: contemporary challenges posed by political inclusion in their country of origin

Directory of Open Access Journals (Sweden)

Ana MARGHERITIS

2017-10-01

Full Text Available This paper explores the politics of intermittent and selective inclusion of Argentines abroad in home politics. It accounts for franchise reform initiatives and explains which factors influenced Argentine citizens in the exercising of their right to vote from abroad. It traces the unfolding and stalemate of an incipient diaspora engagement policy to explain the limits to effective political inclusion of Argentine citizens living abroad today. Thus, it contributes to our understanding of the politics and institutional dynamics of the process of reforming the franchise and citizenship in one of the least explored examples within the literature.

Argentine-Brazilian declaration on common nuclear policy

International Nuclear Information System (INIS)

1990-12-01

The document reproduces the texts of the speeches made by the Presidents of Argentina and Brazil at Foz do Iguacu, Brazil, on 28 November 1990, at the signing of the Argentine-Brazilian Declaration on Common Nuclear Policy

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.

Atucha II: building a 745 MWe pressure-vessel PHWR in the Argentine

International Nuclear Information System (INIS)

Leibovich, H.; Coll, J.; Backhaus, K.

1982-01-01

The history of the Comision Nacional de Energia Atomica and its involvement with the development in Argentina of a nuclear power plant manufacturing technology is described. The way in which technology transfer from German industry has enabled increasing Argentine participation is outlined. The formation of the joint Argentine/German engineering company ENACE in 1981 will promote this process. (U.K.)

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

Regulatory control of maintenance activities in Argentine nuclear power plants

International Nuclear Information System (INIS)

Calvo, J.C.; Caruso, G.

2000-01-01

The main maintenance objective is to assure that the safety features of structures, components and systems of nuclear power plants are kept as designed. Therefore, there is a direct relationship between safety and maintenance. Owing to the above mentioned, maintenance activities are considered a relevant regulatory issue for the Argentine Nuclear Regulatory Authority (ARN). This paper describes the regulatory control to maintenance activities of Argentine nuclear power plants. It also addresses essential elements for maintenance control, routine inspections, special inspections during planned outages, audits and license conditions and requirements. (author)

CARA project

International Nuclear Information System (INIS)

Bergallo, Juan E.; Brasnarof, Daniel O.

2000-01-01

The CARA (Advanced Fuels for Argentine Reactors) Project successfully completed its first stage, phase one, last year. The performance of this fuel has been partially examined, using CNEA and CONUAR facilities and personnel. With the results obtained in this stage, determined by the corresponding tests and verification of the fuel behavior, the performance of the second stage started immediately afterwards. Works performed and results obtained during the development of the second stage are generally described in this paper. (author)

Quality assurance programmes and normalization for the Argentine-Brazilian integration

International Nuclear Information System (INIS)

Biernat, A.E.

1987-01-01

Within the frame of the tasks developed by the Argentine-Brazilian Contractors Coordination Committee in the nuclear area, which was at the beginning promoted by the Contractor Committee of the Argentine Association of Nuclear Technology, a working team was created between both countries in order to analyze the existing regulations and the Quality Assurance systems applied in Brazil and Argentina for their nuclear projects. This paper describes the steps to be followed so as to fulfill the compatibility of the rules, quality assurance and firm certification, laboratories, personnel and materials, and the applicable quality assurance programmes. At first, the methodology applied was the collection of the information and the existing regulations in each one of the countries, to exchange them, analyze them and arrange joint meetings and organize a seminar with experts from both countries to develop and discuss the objectives of this working team. As a result of these activities, the criteria adopted will allow, together with another actions, that both Argentine and Brazilian firms make exchanges and integrations in the nuclear field to supply Atucha II and Angra II. (Author)

Argentine nuclear energy standardization activities

International Nuclear Information System (INIS)

Boero, Norma; Corcuera, Roberto; Palacios, Tulio A.; Hey, Alfredo M.; Berte, G.; Trama, L.

2004-01-01

The International Organization for Standardization (ISO) has more than 200 Technical Committees that develop technical standards. During April 2004 took place in Buenos Aires the 14th Plenary of the ISO/TC 85 Nuclear Energy Committee. During this Plenary issues as Nuclear Terminology, Radiation Protection, Nuclear Fuels, Nuclear Reactors and Irradiation Dosimetry was dealt with. 105 International delegates and 45 National delegates (belonging to CNEA, ARN, NASA, INVAP, CONUAR, IONICS and other organizations) attended the meetings. During this meeting ISO/TC 85 changed its scope; the new scope of the Committee is 'Standardization in the fields of peaceful applications of nuclear energy and of the protection of individuals against all sources of ionizing radiations'. This work summarizes the most important advances and resolutions about the development of standards taken during this meeting as well as the main conclusions. (author) [es

From Savagery to Sovereignty: Identity, Politics, and International Expositions of Argentine

Science.gov (United States)

Kerr, Ashley

2017-03-01

In the late nineteenth century, Argentine intellectual elites turned to world’s fairs as a place to contest myths of Latin American racial inferiority and produce counternarratives of Argentine whiteness and modernity. This essay examines Argentine anthropological displays at three expositions between 1878 and 1892 to elucidate the mechanisms and reception of these projects. Florentino Ameghino, Francisco Moreno, and others worked deliberately and in conjunction with political authorities to erase the indigenous tribes from the national identity, even while using their bodies and products to create prehistory and garner intellectual legitimacy. Comparison of the three fairs also demonstrates how the representation of Amer-Indians and their artifacts shifted in accordance with local political needs and evolving international theories of anthropogenesis. The resulting analysis argues for the importance of considering the former colonies of the Global South in understanding the development of pre-twentieth-century anthropology and world’s fairs, particularly when separating them from their imperial context.

Argentine Population Genetic Structure: Large Variance in Amerindian Contribution

Science.gov (United States)

Seldin, Michael F.; Tian, Chao; Shigeta, Russell; Scherbarth, Hugo R.; Silva, Gabriel; Belmont, John W.; Kittles, Rick; Gamron, Susana; Allevi, Alberto; Palatnik, Simon A.; Alvarellos, Alejandro; Paira, Sergio; Caprarulo, Cesar; Guillerón, Carolina; Catoggio, Luis J.; Prigione, Cristina; Berbotto, Guillermo A.; García, Mercedes A.; Perandones, Carlos E.; Pons-Estel, Bernardo A.; Alarcon-Riquelme, Marta E.

2011-01-01

Argentine population genetic structure was examined using a set of 78 ancestry informative markers (AIMs) to assess the contributions of European, Amerindian, and African ancestry in 94 individuals members of this population. Using the Bayesian clustering algorithm STRUCTURE, the mean European contribution was 78%, the Amerindian contribution was 19.4%, and the African contribution was 2.5%. Similar results were found using weighted least mean square method: European, 80.2%; Amerindian, 18.1%; and African, 1.7%. Consistent with previous studies the current results showed very few individuals (four of 94) with greater than 10% African admixture. Notably, when individual admixture was examined, the Amerindian and European admixture showed a very large variance and individual Amerindian contribution ranged from 1.5 to 84.5% in the 94 individual Argentine subjects. These results indicate that admixture must be considered when clinical epidemiology or case control genetic analyses are studied in this population. Moreover, the current study provides a set of informative SNPs that can be used to ascertain or control for this potentially hidden stratification. In addition, the large variance in admixture proportions in individual Argentine subjects shown by this study suggests that this population is appropriate for future admixture mapping studies. PMID:17177183

Argentine-Brazilian declaration on common nuclear policy

International Nuclear Information System (INIS)

1990-12-01

The document reproduces the text of the Argentine-Brazilian Declaration on Common Nuclear Policy, signed by the Presidents of Argentina and Brazil at Foz do Ignacu, Brazil, on 28 November 1990. At the invitation of the Governments of Argentina and Brazil, the Agency's Director General attended the signing ceremony

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

Science.gov (United States)

2015-03-26

Air Force (2010). Manual de Conduccion Logistica . Buenos Aires: HQ Argentine Air Force. Argentine Air Force (2012). El vuelo del condor: 1912-2012...recommendation was made to consider organic or private transportation and reduce transportation time in order to improve responsiveness and drive down...determine overall transportation demand and capacity required for a defined level of service, and to evaluate the tradeoffs between costs and service

Behavioural and chemical evidence for multiple colonisation of the Argentine ant, Linepithema humile, in the Western Cape, South Africa

Directory of Open Access Journals (Sweden)

Wossler Theresa C

2011-02-01

Full Text Available Abstract Background The Argentine ant, Linepithema humile, is a widespread invasive ant species that has successfully established in nearly all continents across the globe. Argentine ants are characterised by a social structure known as unicoloniality, where territorial boundaries between nests are absent and intraspecific aggression is rare. This is particularly pronounced in introduced populations and results in the formation of large and spatially expansive supercolonies. Although it is amongst the most well studied of invasive ants, very little work has been done on this ant in South Africa. In this first study, we investigate the population structure of Argentine ants in South Africa. We use behavioural (aggression tests and chemical (CHC approaches to investigate the population structure of Argentine ants within the Western Cape, identify the number of supercolonies and infer number of introductions. Results Both the aggression assays and chemical data revealed that the Western Cape Argentine ant population can be divided into two behaviourally and chemically distinct supercolonies. Intraspecific aggression was evident between the two supercolonies of Argentine ants with ants able to discriminate among conspecific non-nestmates. This discrimination is linked to the divergence in cuticular hydrocarbon profiles of ants originating from the two supercolonies. Conclusions The presence of these two distinct supercolonies is suggestive of at least two independent introductions of this ant within the Western Cape. Moreover, the pattern of colonisation observed in this study, with the two colonies interspersed, is in agreement with global patterns of Argentine ant invasions. Our findings are of interest because recent studies show that Argentine ants from South Africa are different from those identified in other introduced ranges and therefore provide an opportunity to further understand factors that determine the distributional and spread

Organisation of the National Atomic Energy Commission. Decree-Law N` 22.498 (19-Dec-1956; B.O. 28-Dec-1956). Ratified by Law 14.467/58; Organizacion de la Comision Nacional de Energia Atomica. Decreto-Ley N` 22.498 (19-dic-1956; B.O. 28-dic-1956). Ratificada por Ley 14.467/58

Energy Technology Data Exchange (ETDEWEB)

NONE

1957-12-31

Organization of the National Atomic Energy Commission of the Argentine Republic. Organic law through which this institution shall function as an autonomous entity, empowered to act publicly and privately in scientific, technical, industrial, commercial, administrative and financial matters. Its purposes will be the scientific and industrial promotion, execution, research and application of nuclear transmutations. Also to control the applications of nuclear energy for reasons of public usefulness in order to prevent the damages they could cause. It establishes that the CNEA will be administered by a Board of Directors composed by a Chairman and five members, who will have attributions and duties such as advise the Executive Power of the Argentine Republic in matters related to the atomic energy and their applications and the necessary precautions for the protection against atomic dangers. This Board of Directors will need the authorization of the Executive Power to undertake some activities such as the exportation of nuclear materials or enter into contracts and agreements with societies with the Argentine provinces for the exploitation of nuclear deposits and mines.

Argentine Republic intercomparison programme for personal dosimeters

International Nuclear Information System (INIS)

Gregori, Beatriz N.; Papadopulos, Susana B.; Kunst, Juan J.; Cruzate, Juan A.; Saravi, Margarita C.

2004-01-01

In 1997 an Intercomparison Program for individual monitoring started in order to test (on a voluntary basis) the performance in absorbed dose and personal dose equivalent determinations. The aim of the program was also to gain some insight into the general aspects related to the type of the personnel dosimeter used, the calibration procedures, the phantom spectral dependence and the management of radiological quantities. The Regional Reference Center for Dosimetry (CCR), of the Argentine National Atomic Energy Commission and the Physical Dosimetry Laboratory of the Argentine National Regulatory Authority, performed the irradiations. Those were done free air and on ICRU phantom, using X-ray, quality ISO: W60, W80, W110 and W200; and 137 Cs and 60 Co gamma rays, normal and angular (0, 30, 60 degrees) incidence. In the framework of the Program, an upgraded workshop took place and the national standard, IRAM 17146, was elaborated as well. In this work, the laboratories performance and its temporal evolution is shown from 1997 up to 2002. The suggestions to improve their performance are also included. (author)

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.

Advances and highlights of the CNEA qualification program as high density fuel manufacturer for research reactors

Energy Technology Data Exchange (ETDEWEB)

Adelfang, P.; Alvarez, L.; Boero, N.; Calabrese, R.; Echenique, P.; Markiewicz, M.; Pasqualini, E.; Ruggirello, G.; Taboada, H. [Unidad de Actividad Combustibles Nucleares Comision Nacional de Energia Atomica (CNE4), Avda. del Libertador, 8250 C1429BNO Buenos Aires (Argentina)

2002-07-01

One of the main objectives of CNEA regarding the fuel for research reactors is the development and qualification of the manufacturing of LEU high-density fuels. The qualification programs for both types of fuels, Silicide fuel and U- x Mo fuel, are similar. They include the following activities: development and set up of the fissile compound manufacturing technology, set up of fuel plate manufacturing, fabrication and irradiation of mini plates and plates, design and fabrication of fuel assembly prototypes for irradiation, post-irradiation examination and feedback for manufacturing improvements. This paper describes the different activities performed within each program during the last year and the main advances and achievements of the programs within this period. The main achievements may be summarized in the following activities: Continuation of the irradiation of the first silicide fuel element in the R A3. Completion of the manufacturing of the second silicide fuel element, licensing and beginning of its irradiation in the R A3. Development of the HMD Process to manufacture U-Mo powder (pUMA project). Set up of fuel plates manufacturing at industrial level using U-Mo powder. Preliminary studies and the design for the irradiation of mini plates, plates and full scale fuel elements with U-Mo and 7 g U/cm{sup 3}. PIE destructive studies for the P-04 silicide fuel prototype (accurate burnup determination through chemical analysis, metallography and SEM of samples from the irradiated fuel plates). Improvement and development of new characterization techniques for high density fuel plates quality control including US testing and densitometric analysis of X-ray examinations. The results obtained in this period are encouraging and also allow to foresee a wider participation of CNEA in the international effort to qualify U-Mo as a new material for the manufacturing of research reactor fuels. (author)

Advances and highlights of the CNEA qualification program as high density fuel manufacturer for research reactors

International Nuclear Information System (INIS)

Adelfang, P.; Alvarez, L.; Boero, N.; Calabrese, R.; Echenique, P.; Markiewicz, M.; Pasqualini, E.; Ruggirello, G.; Taboada, H.

2002-01-01

One of the main objectives of CNEA regarding the fuel for research reactors is the development and qualification of the manufacturing of LEU high-density fuels. The qualification programs for both types of fuels, Silicide fuel and U- x Mo fuel, are similar. They include the following activities: development and set up of the fissile compound manufacturing technology, set up of fuel plate manufacturing, fabrication and irradiation of mini plates and plates, design and fabrication of fuel assembly prototypes for irradiation, post-irradiation examination and feedback for manufacturing improvements. This paper describes the different activities performed within each program during the last year and the main advances and achievements of the programs within this period. The main achievements may be summarized in the following activities: Continuation of the irradiation of the first silicide fuel element in the R A3. Completion of the manufacturing of the second silicide fuel element, licensing and beginning of its irradiation in the R A3. Development of the HMD Process to manufacture U-Mo powder (pUMA project). Set up of fuel plates manufacturing at industrial level using U-Mo powder. Preliminary studies and the design for the irradiation of mini plates, plates and full scale fuel elements with U-Mo and 7 g U/cm 3 . PIE destructive studies for the P-04 silicide fuel prototype (accurate burnup determination through chemical analysis, metallography and SEM of samples from the irradiated fuel plates). Improvement and development of new characterization techniques for high density fuel plates quality control including US testing and densitometric analysis of X-ray examinations. The results obtained in this period are encouraging and also allow to foresee a wider participation of CNEA in the international effort to qualify U-Mo as a new material for the manufacturing of research reactor fuels. (author)

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.

Status of RERTR activities in Argentina

International Nuclear Information System (INIS)

Alvarez, L.; Boero, N.; Pasqualini, E.; Echenique, P.; Ruggirello, G.; Taboada, H.

2003-01-01

CNEA, the Atomic Energy Commission of Argentina, has defined development and fabrication activities related with the main fields of the RERTR program. This includes the qualification of high-density fuels for research reactors, the production of radioisotopes from LEU targets and the reduction of the HEU inventory. This paper continues previous presentations in past RERTR meetings and summarizes the main activities performed in these fields during 2002- 2003 and future works. The main part of the CNEA U 3 Si 2 Qualification Program will be completed within this year. The irradiation of the first fuel element was finished and the activities are mainly focused on its PIE works. Regarding the UMo field, development works to provide support for fuel plate fabrication process and to improve understanding of UMo-Al interaction are on progress. Depending on the results of the fuel plate fabrication setup, the manufacturing of full size FE for UMo qualification program could take place during 2004. A program related with the UMo monolithic fuel is also in progress. In the radioisotopes field LEU targets have replaced HEU-Al alloy targets for routine Mo-99 production since November 2002. CNEA approach to minimize the Argentine HEU inventory is also presented (author)

Planning and Nuclear Knowledge Management

International Nuclear Information System (INIS)

Grance Torales, V.L.; Lira, L.

2016-01-01

Full text: The present case aims to share the experience of the Intellectual Capital Section (ICS), part of Planning, Coordination and Control Department of the Argentine Atomic Energy Commission (CNEA) in its search for a sustainable knowledge management. Among the strategic objectives included in CNEA’s Strategic Plan (SP), is the development, preservation and transference of knowledge and experience. Under this framework, the role initially assumed by the ICS, consisted on the observation and diagnosis of the situation of the Institutional Human Capital (HC), through the study of the main characteristics of the staff of CNEA. The second stage of SP (2015–2025), which consisted of updating the HC data, the incorporation of the concept of “knowledge management” was approved by the authorities of the Institution. Based on this background, in 2016 the objectives of the ICS are aimed at organizing and coordinating a network of knowledge management that involves the entire organization. This new phase implies, among other things, the proposal of a knowledge management policy, interaction with other sectors of CNEA for implementation, analysis of the tools to be used, in order to determine a way and work style that suits the culture and structure of the organization. (author

Evaluation of the international limitations and conditions of the Argentinian nuclear politics

International Nuclear Information System (INIS)

Martin, Hugo R.

2003-01-01

It is a broadly accepted fact that the Argentine Republic is one of the few development countries that has reached an advance status in the world in pacific applications of nuclear science and technology. A retrospective vision of the main technical and political aspects that characterized the process to global scale allows to confirm, starting from the theory of the International Relations, that the position reached by the country was the consequence of a coherent effort sustained under the almost exclusive conduction of the National Atomic Energy Commission (CNEA). The Nuclear politics of Argentine in the international concert during the last fifty years, sample a behavior of non adhesion to the juridical treaties commitments that were considered limitative for the initial objectives proposed when President General J. D. Peron created the CNEA in 1950: self-sufficiency and national autonomy. This continuity shows an unusual coherence in the foreign policy of the country maintained by all the governments that exercised the power during five decades. The result of this investigation task has allowed to elaborate a complex, reasonably coherent vision of the consequences that the limitations and conditions on the Argentine nuclear politics had in the three temporary dimensions and in different levels. From the theoretical point of view, the scenario starts from the crisis of the Utopism that revaluate the Classic Realism (H. Morgenthau) after the Second World War. In the next stage K. Waltz's Structural Realism starts when the internationalization process of the nuclear technology begins in the 50. Other theoretical models: Complex Interdependence (R. Keohane and J. Nye) and Peripheric Realism (C. Escude) at local level seem to be the representative models to describe the Argentine political behavior in the nuclear politic and to prove that the main variable in this field was the genuine domain of the scientific and technological knowledge developed in the national

[The assimilation of Italians and their descendants in Argentine society (1880-1925)].

Science.gov (United States)

Nascimbene, M C

1996-09-01

"The impact of massive immigration in the post-1870 period produced major changes in... Argentine society. Integration of immigrant groups (Italians, Spaniards, the French and others) was nevertheless fiercely opposed by local elites. The essay is firstly concerned with size and development of immigration flows; secondly it deals with the characteristics of local reaction against the immigrants; thirdly it reveals how, in spite of the latter, the Italians' integration did take place in the Argentine middle classes. Finally, a particular case-study is presented, in connection with integration of immigrants and their descendants in the national army." (SUMMARY IN ENG AND FRE) excerpt

Decommissioning of nuclear facilities: a growing activity in the world

International Nuclear Information System (INIS)

Anasco, Raul

2001-01-01

Nuclear power plants and nuclear facilities are no different from normal buildings and factories. Eventually, they become worn-out or old fashioned, too expensive to maintain or remodel. Decommissioning a nuclear facility is different from retiring other types because of the radioactivity involved. The most important consideration in nuclear decommissioning is to protect workers and the public from exposure to harmful levels of radiation. General criteria and strategies for the decommissioning of nuclear facilities are described as well as the present decommissioning activities of the Argentine CNEA (author)

Heavy water. An original project in the Argentine Patagonia

International Nuclear Information System (INIS)

Conde Bidabehere, Luis F.

2000-01-01

The history of the heavy water production plant built in Arroyito, in the Argentine province of Neuquen is related. Details are given on the development of the project and on the operation of the plant. The possible complementary production of ammonia and fertilizers is analyzed

Argentine criteria on nuclear safety and emergencies: their impact on the Argos PHWR 380 design

International Nuclear Information System (INIS)

Gonzalez, A. J.

1988-01-01

This paper describes first the safety criteria of the Argentine regulatory authority with emphasis on the probabilistic safety criteria based on a limitation of individual risks. Then, it is presented a discussion on emergency criteria in relation to evacuation and relocation measures. Finally, the paper briefly describes the design of an Argentine offer for a safer heavy water reactor where these criteria are applied. 9 figs., 1 tab., 46 refs. (author)

Growing Industries, Growing Invasions? The Case of the Argentine Ant in Vineyards of Northern Argentina

OpenAIRE

Maria Schulze-Sylvester; José A. Corronca; Carolina I. Paris

2018-01-01

The invasive Argentine ant causes ecological and economic damage worldwide. In 2011, this species was reported in vineyards of Cafayate, a wine-producing town in the Andes, Argentina. While the local xeric climate is unsuitable for Argentine ants, populations could establish in association with vineyards where human activity and irrigation facilitate propagule introduction and survival. In 2013–2014, we combined extensive sampling of the area using ant-baits with monitoring of the change in l...

Annual Report ABACC 2003 - Brazilian-Argentine Agency for the Accounting and Control of Nuclear Materials

International Nuclear Information System (INIS)

2003-01-01

This Report describes the actions of the Brazil-Argentine of Accounting and Control of Nuclear Materials (ABACC), during the year of 2003. The developed work allowed to concluded that there is no event indicating that any nuclear material non-accounted for were deviated for non permitted activities by the Agreement for Peaceful Use of Nuclear Energy between Argentine and Brazil and by the Four Parties Agreement among these countries, the ABACC and the International Atomic Energy Agency (IAEA)

The Argentine-Brazilian fast reactor programme

International Nuclear Information System (INIS)

Gho, C.J.; Mauricio, A.

1989-01-01

This paper summarizes the Argentine-Brazilian Fast Reactor Programme and gives reasons for the decision of a binational venture. The work carried out by both countries is described, showing how they complement each other, with the corresponding saving of resources. The main objectives of the Programme and tentative schedules in three progressing integrating stages are given and the present nuclear know-how in each country is identified as a good starting point. The paper also gives some details regarding the economical and human resources involved. (author). 1 graph

Argentine activities on fuels for nuclear generation stations

International Nuclear Information System (INIS)

Olezza, R.L.; Valesi, J.

1995-01-01

In the last six years, significant changes have taken place in the nuclear fuel activity field in Argentina, therefore all the areas of the nuclear fuel cycle have been strongly influenced by these. The strategies carried out by CNEA to give an initial answer to the modifications of the domestic and international context of the nuclear fuel cycle were described in the previous Conference. Three years later, it is possible to appreciate the first results of the application of those strategies, and also that the frame has continued not only evolving and requiring new answers, but adapting and accentuating some strategies as well. A brief review of those results is presented here, together with a summary of the condition of the current situation and of the proposals to face it. (author)

Preparations for the shipment of RA-3 reactor irradiated fuel

International Nuclear Information System (INIS)

Goldschmidt, Adrian; Novara, Oscar; Lafuente, Jose

2002-01-01

During the last quarter of 2000, in the Radioactive Waste Management Area of the Argentine National Commission of Atomic Energy (CNEA), located at Ezeiza Atomic Center (CAE), activities associated to the shipment of 207 MTR spent fuels containing high enrichment uranium were carried out within the Foreign Research Reactor/Domestic Research Reactor Receipt Program launched by the US Department of Energy (DOE). The MTR spent fuel shipped to Savannah River Site (SRS) was fabricated in Argentina with 90% enriched uranium of US origin and it was utilized in the operation of the research and radioisotope production reactor RA-3 from 1968 until 1987. After a cooling period at the reactor, the spent fuel was transferred to the Central Storage Facility (CSF) located in the waste management area of CAE for interim storage. The spent fuel (SF) inventory consisted of 166 standard assemblies (SA) and 41 control assemblies (CA). Basically, the activities performed were the fuel conditioning operations inside the storage facility (remote transference of the assemblies to the operation pool, fuel cropping, fuel re-identification, loading in transport baskets, etc.) conducted by CNEA. The loading of the filled baskets in the transport casks (NAC-LWT) by means of intermediate transfer systems and loaded casks final preparations were conducted by NAC personnel (DOE's contractor) with the support of CNEA personnel. (author)

Alcohol consumption and violence among Argentine adolescents

OpenAIRE

Mariaelena Pierobon; Mariam Barak; Sahel Hazrati; Kathryn H. Jacobsen

2013-01-01

Objective: This study investigated the association between alcohol and violence among Argentine youth. Methods: Data from the 2007 Argentina Global School-based Student Health Survey (GSHS), a nationally representative survey of middle school students, were examined using age-adjusted logistic regression models. Results: Of the 1,328 participating students aged 13 to 15 years old, 51.9% reported drinking alcohol in the previous month, with higher rates among males (p = 0.04) and older s...

1993 Annual report of the Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials - ABACC

International Nuclear Information System (INIS)

1994-01-01

The 1993 annual report of the Brazilian Argentine Agency for Accounting and Control of Nuclear Materials, (ABACC), describes the activities regarding the administration and application of the Control and Accounting Common System (SCCC) established by the bilateral agreement between the Republic of Argentine and Federative Republic of Brazil for exclusive peaceful use of the nuclear energy. The main goal to verify practically all the installations which were not subjected to the international safeguards, before the agreement, was reached. Considering the safeguards application under implementation in both countries, the ABACC is preparing itself technically for the quadripartite agreement to be into force and signed among Argentine, Brazil, IAEA and ABACC. On checking the procedures established by the SCCC and controlled material, nothing was detected that could indicate nuclear material diversion either for nuclear weapon or for other explosive nuclear device. (B.C.A.)

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...

Non-destructive testing: significant facts

International Nuclear Information System (INIS)

Espejo, Hector; Ruch, Marta C.

2006-01-01

In the last fifty years different organisations, both public and private, have been assigned to the mission of introducing into the country the most relevant aspects of the modern technological discipline 'Non Destructive Testing' (NDT) through a manifold of activities, such as training and education, research, development, technical assistance and services, personnel qualification/certification and standardisation. A review is given of the significant facts in this process, in which the Argentine Atomic Energy Commission, CNEA, played a leading part, a balance of the accomplishments is made and a forecast of the future of the activity is sketched. (author) [es

Abstracts of the 1. National congress of hydrogen and sustainable energy sources

International Nuclear Information System (INIS)

2005-01-01

The First Argentine National Congress of Hydrogen and Sustainable Energy Sources was organized by the Instituto of Sustainable Energy and Development CNEA, in San Carlos de Bariloche, between the 8th and 10th of June of 2005. In this event 88 papers were presented in the following sessions, on these subjects: 1.-Hydrogen-Materials Interaction. 2.-Materials Damage. 3.-Production and Purification. 4.-Storage and Transportation. 5.-Fuel Cells. 6.-Prototypes and Demonstration Plants. 7.-Eolic Energy. 8.-Solar Energy. 9.-Biomass. 10.-Small Hydroelectric Plants. 11.-Other Activities. 12.-Hybrid Fuels. 13.- Reforming, Materials, Catalysis, Processes. 14.-Projections and Energy Prospective

Proceedings of the 6. Argentine congress on radiation protection and nuclear safety

International Nuclear Information System (INIS)

1998-01-01

The 6th Argentine Congress on Radiation Protection and Nuclear Safety was organized by the Radioprotection Argentine Society, in Buenos Aires, between the 22 and 24 of september of 1998. In this event, were presented almost 66 papers in the following sessions, about these subjects: 1.- Safety in nuclear installations. 2.- Control of nuclear material and physical protection of nuclear installations. 3.- Programs of quality assurance. 4.- Training, technical information and public information. 5.- Physical dosimetry. 6.- Physical dosimetry and occupational radiation protection. 7.- Exposure of the natural radiation. 8.- Environmental radiological safety. 9.- Biological effects of the ionizing radiations and biological dosimetry. 10.- Radiological protection of the medical practice and the radiological emergencies. 11.- Radioactive wastes management. 12.- Transport of radioactive materials

Qualification of high-density fuel manufacturing for research reactors at CNEA

Energy Technology Data Exchange (ETDEWEB)

Adelfang, P.; Alvarez, L.; Boero, N.; Calabrese, R.; De La Fuente, M.; Echenique, P.; Markiewicz, M.; Pasqualini, E.; Ruggirello, G.; Taboada, H. [CNEA, Buenos Aires (Argentina)

2001-07-01

CNEA, the National Atomic Energy Commission of Argentina, is at the present a qualified supplier of uranium oxide fuel for research reactors. A new objective in this field is to develop and qualify the manufacturing of LEU high-density fuel for this type of reactors. According with the international trend Silicide fuel and U-xMo fuel are included in our program as the most suitable options. The facilities to complete the qualification of high-density MTR fuels, like the manufacturing plant installations, the reactor, the pool side fuel examination station and the hot cells are fully operational and equipped to perform all the activities required within the program. The programs for both type of fuels include similar activities: development and set up of the fuel material manufacturing technology, set up of fuel plate manufacturing, fabrication and irradiation of miniplates, fabrication and irradiation of full scale fuel elements, post-irradiation examination and feedback for manufacturing improvements. For silicide fuels most of these steps have already been completed. For U-xMo fuel the activities also include the development of alternative ways to obtain U-xMo powder, feasibility studies for large-scale manufacturing and the economical assessment. Set up of U-xMo fuel plate manufacturing is also well advanced and the fabrication of the first full scale prototype is foreseen during this year. (author)

Safety analysis of an irradiation device for 99Mo production in RA-3 reactor

International Nuclear Information System (INIS)

Lerner, Ana Maria; Madariaga, Marcelo; Waldman, Ricardo

2000-01-01

The Argentine RA-3 research reactor (5 MW) has been converted to LEU fuel more than nine years ago. Since then, it has been operating with LEU fuel, which has been designed and fabricated at the National Atomic Energy Commission (CNEA). The Nuclear Regulatory Authority (ARN) is the institution in charge of the installation safety control. It is under this framework that the ARN has elaborated a neutronic calculation model for the RA-3 core, paying special attention to the device presently used for the irradiation of (HEU) 235 U targets required to obtain 9 '9Mo as a fission product. A regulatory analysis of results is carried out in the framework of ARN standards for fixed experiments. For such purpose, calculated reactivity values associated with such device are compared with recently measured values at the installation. Finally, and according to guidelines established in the first part of this work, a calculation model for a new device proposed by CNEA for the irradiation of metallic (LEU) uranium targets and still at its design stage, is here analysed. (author)

Process variables in the obtention of U-Mo powder by the hydriding-milling-dehydriding method (HMD process)

International Nuclear Information System (INIS)

Pasqualini, Enrique E.; Helzel Garcia, Javier; Lopez, Marisol

2003-01-01

In the next few years nuclear fuels based on uranium oxides, aluminides and silicides for MTR reactors will be replaced by the high density alloy uranium- 7% (w/w) molybdenum (U-7 Mo). Actually there is only one commercial supplier of this raw material that has to be provided as powder containing 20% enriched uranium ( 235 U). In the Nuclear Fuels Department of the National Atomic Energy Commission (CNEA) at Buenos Aires was developed an alternative way of producing U-7 Mo powder in a production scale. Meanwhile CNEA is participating in the International Program (RERTR) for final qualification of this nuclear material. This new method of production consists in the hydriding of the alloy, milling the hydride to final size and dehydriding the powder. These results were achieved because a special technique was discovered for the massive hydriding of the U-7 Mo alloy. The production method is simple, requires conventional equipment and low investment. Argentine can have important comparative advantages for its production and exportation. A scale production plant is being planed. (author)

Lathyrus linearifolius (Leguminosae-Vicieae confirmed species for the Argentine flora

Directory of Open Access Journals (Sweden)

Ricardo O. Vanni

2005-01-01

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

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.

Early markers of blood coagulation and fibrinolysis activation in Argentine hemorrhagic fever

NARCIS (Netherlands)

Heller, M. V.; Marta, R. F.; Sturk, A.; Maiztegui, J. I.; Hack, C. E.; Cate, J. W.; Molinas, F. C.

1995-01-01

Junin virus, an arenaviridae, is the etiological agent of Argentine hemorrhagic fever. In addition to thrombocytopenia, patients present several alterations in both the blood coagulation and the fibrinolytic system, but diffuse intravascular coagulation could not be demonstrated. To investigate

A PCI failure in an experimental MOX fuel rod and its sensitivity analysis

International Nuclear Information System (INIS)

Marino, A.C.

2000-01-01

Within our interest in studying MOX fuel performance, the irradiation of the first Argentine prototypes of PHWR MOX fuels began in 1986 with six rods fabricated at the α Facility (CNEA, Argentina). These experiences were made in the HFR-Petten reactor, Holland. The goal of this experience was to study the fuel behaviour with respect to PMCI-SCC. An experiment for extended burnup was performed with the last two MOX rods. During the experiment the final test ramp was interrupted due to a failure in the rod. The post-irradiation examinations indicated that PCI-SCC was a mechanism likely to produce the failure. At the Argentine Atomic Energy Commission (CNEA) the BACO code was developed for the simulation of a fuel rod thermo-mechanical behaviour under stationary and transient power situations. BACO includes a probability analysis within its structure. In BACO the criterion for safe operation of the fuel is based on the maximum hoop stress being below a critical value at the cladding inner surface; this is related to susceptibility to stress corrosion cracking (SCC). The parameters of the MOX irradiation, the preparation of the experiments and post-irradiation analysis were sustained by the BACO code predictions. We present in this paper an overview of the different experiences performed with the MOX fuel rods and the main findings of the post-irradiation examinations. A BACO code description, a wide set of examples which sustain the BACO code validation, and a special calculation for BU15 experiment attained using the BACO code, including a probabilistic analysis of the influence of rod parameters on performance, are included. (author)

CNEA's (Comision Nacional de Energia Atomica) experience in the preparation of a national system for laboratory accreditation

International Nuclear Information System (INIS)

Piacquadio, N.H.; Palacios, T.A.; Casa, V.A.; Koll, J.H.

1993-01-01

Within the regional markets, as it is the case of MERCOSUR , the laboratories which are suppliers of test and calibration results, are mutually recognized through the National Accreditation Systems. In Argentina there is a project to create a Center for the Accreditation of Test Laboratories. CNEA, which is involved in the execution of large projects and has adopted quality assurance criteria for a long time, requires for internal and external laboratories to be qualified. At the beginning of this year, a Committee for the Qualification of Laboratories was created in the Research and Development and Fuel Cycle Areas. Its objective was planning, management of documents, coordination, evaluation and quantification of laboratories, according to national IRAM and international ISO standards. This paper analyzes the organization of the system and the methods to evaluate and qualify laboratories as a process of growing up leading to the future National Accreditation System. (author). 3 figs

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

International Nuclear Information System (INIS)

Marino, A.C.

1997-01-01

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)

Estimations on uranium silicide fuel prototypes for their irradiation and postirradiation

International Nuclear Information System (INIS)

Sbaffoni, Maria M.

2000-01-01

The 'Silicide' project includes the qualification of this type of research reactor fuel to be used i.e. in the Argentine RA-3 and to confirm CNEA's role as an international supplier. The present paper shows complementary basic information for P-04 prototype post-irradiation, which is already under way, and some parameter values related to the new P-06 prototype to be taken into account for planning its irradiation and post-irradiation. The reliability of these values has been evaluated through comparison with experimental results. The reported results contribute, also, to a parallel study on the nuclear data libraries used in calculations for this type of reactor. (author)

Accreditation experience of radioisotope metrology laboratory of Argentina

Energy Technology Data Exchange (ETDEWEB)

Iglicki, A. [Laboratorio de Metrologia de Radioisotopos, Comision Nacional de Energia Atomica (Argentina)]. E-mail: iglicki@cae.cnea.gov.ar; Mila, M.I. [Laboratorio de Metrologia de Radioisotopos, Comision Nacional de Energia Atomica (Argentina)]. E-mail: mila@cae.cnea.gov.ar; Furnari, J.C. [Laboratorio de Metrologia de Radioisotopos, Comision Nacional de Energia Atomica (Argentina); Arenillas, P. [Laboratorio de Metrologia de Radioisotopos, Comision Nacional de Energia Atomica (Argentina); Cerutti, G. [Laboratorio de Metrologia de Radioisotopos, Comision Nacional de Energia Atomica (Argentina); Carballido, M. [Laboratorio de Metrologia de Radioisotopos, Comision Nacional de Energia Atomica (Argentina); Guillen, V. [Laboratorio de Metrologia de Radioisotopos, Comision Nacional de Energia Atomica (Argentina); Araya, X. [Laboratorio de Metrologia de Radioisotopos, Comision Nacional de Energia Atomica (Argentina); Bianchini, R. [Laboratorio de Metrologia de Radioisotopos, Comision Nacional de Energia Atomica (Argentina)

2006-10-15

This work presents the experience developed by the Radioisotope Metrology Laboratory (LMR), of the Argentine National Atomic Energy Commission (CNEA), as result of the accreditation process of the Quality System by ISO 17025 Standard. Considering the LMR as a calibration laboratory, services of secondary activity determinations and calibration of activimeters used in Nuclear Medicine were accredited. A peer review of the ({alpha}/{beta})-{gamma} coincidence system was also carried out. This work shows in detail the structure of the quality system, the results of the accrediting audit and gives the number of non-conformities detected and of observations made which have all been resolved.

Accreditation experience of radioisotope metrology laboratory of Argentina

International Nuclear Information System (INIS)

Iglicki, A.; Mila, M.I.; Furnari, J.C.; Arenillas, P.; Cerutti, G.; Carballido, M.; Guillen, V.; Araya, X.; Bianchini, R.

2006-01-01

This work presents the experience developed by the Radioisotope Metrology Laboratory (LMR), of the Argentine National Atomic Energy Commission (CNEA), as result of the accreditation process of the Quality System by ISO 17025 Standard. Considering the LMR as a calibration laboratory, services of secondary activity determinations and calibration of activimeters used in Nuclear Medicine were accredited. A peer review of the (α/β)-γ coincidence system was also carried out. This work shows in detail the structure of the quality system, the results of the accrediting audit and gives the number of non-conformities detected and of observations made which have all been resolved

Colorado Basin Structure and Rifting, Argentine passive margin

Science.gov (United States)

Autin, Julia; Scheck-Wenderoth, Magdalena; Loegering, Markus; Anka, Zahie; Vallejo, Eduardo; Rodriguez, Jorge; Marchal, Denis; Reichert, Christian; di Primio, Rolando

2010-05-01

The Argentine margin presents a strong segmentation with considerable strike-slip movements along the fracture zones. We focus on the volcanic segment (between the Salado and Colorado transfer zones), which is characterized by seaward dipping reflectors (SDR) all along the ocean-continent transition [e.g. Franke et al., 2006; Gladczenko et al., 1997; Hinz et al., 1999]. The segment is structured by E-W trending basins, which differs from the South African margin basins and cannot be explained by classical models of rifting. Thus the study of the relationship between the basins and the Argentine margin itself will allow the understanding of their contemporary development. Moreover the comparison of the conjugate margins suggests a particular evolution of rifting and break-up. We firstly focus on the Colorado Basin, which is thought to be the conjugate of the well studied Orange Basin [Hirsch et al., 2009] at the South African margin [e.g. Franke et al., 2006]. This work presents results of a combined approach using seismic interpretation and structural, isostatic and thermal modelling highlighting the structure of the crust. The seismic interpretation shows two rift-related discordances: one intra syn-rift and the break-up unconformity. The overlying sediments of the sag phase are less deformed (no sedimentary wedges) and accumulated before the generation of oceanic crust. The axis of the Colorado Basin trends E-W in the western part, where the deepest pre-rift series are preserved. In contrast, the basin axis turns to a NW-SE direction in its eastern part, where mainly post-rift sediments accumulated. The most distal part reaches the margin slope and opens into the oceanic basin. The general basin direction is almost orthogonal to the present-day margin trend. The most frequent hypothesis explaining this geometry is that the Colorado Basin is an aborted rift resulting from a previous RRR triple junction [e.g. Franke et al., 2002]. The structural interpretation

Differential use of the Argentine shelf by wintering adults and juveniles southern giant petrels, Macronectes giganteus, from Patagonia

Science.gov (United States)

Blanco, Gabriela S.; Quintana, Flavio

2014-08-01

To study habitat use and at-sea movements of southern giant petrels (SGP) during non-breeding period, we deployed 15 satellite transmitters (six adults, nine juveniles) at Isla Arce and Isla Gran Robredo colonies in Patagonia, Argentina. Birds were instrumented during 81.4 ± 37 days. Adult birds used 74% of the Argentine shelf concentrating mainly at the shelf break, middle shelf waters, and the surroundings of the colony. After fledging, juveniles spread to the Argentine, Uruguayan and Brazilian shelves within the South Atlantic. Adults alternated at-sea excursions (12 ± 5 days) with periods at the colony of 3 ± 0.3 days. Contrarily, juveniles moved first to the shelf break and then traveled northwards reaching the south of Brazil. There was some spatial overlap between age classes, but only during the first 30 days after juveniles had fledged; thereafter there was not overlap between the areas used by both age classes. The Argentine shelf is widely used by different species offering a suitable environment for foraging; this may be why adults SGP from Patagonian colonies spend all year-round within the Argentine shelf. The identification of used areas of non-breeding SGP fills a gap in the species knowledge contributing not only to the preservation the species, but also to the management of marine areas globally recognized as important for many other Procellariiformes.

The CEDICAE and the paper collections conservation and restoration Laboratory at CNEA : present and future organization and projects

International Nuclear Information System (INIS)

Calvo, Ana M.; Semino, Maria S.; Romero, Gregoria O.; Alfaro, Laura S.; Miranda, Maria V.; Chinen, Silvia P.

2009-01-01

In Ezeiza Atomic Center (CAE), there is a working group formed by staff members from a Documentation and Information Center known as 'Lic. Maria Isabel Gonzalez' (CEDICAE) and from the CNEA Paper Collections Conservation and Restoration Laboratory. New personnel were hired in 2007, which allowed the reorganization of tasks and gave way to the creation of new projects. By conducting weekly morning meetings, the working group decided to organize and plan the activities that had to be conducted. From the first moment, the main objective of the group was to offer a service of excellence, i.e. to provide a duly and timely response to the bibliographical requests made by users, to perform tasks in the laboratory, to train members in diverse subjects of preventive conservation, surveys and evaluations of archives and libraries, and tasks of restoration of our own material and material from third parties. Among the projects carried out by the CEDICAE, the following are included: Firstly, the continuous training and education of its personnel, training of users in topics dealing with the use of the MINCyT Library, participation in the Internal Network of Libraries (REDIN) in order to adopt a joint policy by CNEA libraries, participation in the Network RRIAN (Regional Network of Information for Latin America and the Caribbean in the Nuclear Field), participation in the Federal Network of Libraries and Information, with the National Commission of Public Libraries (CONABIP) and with the Documentation Center of the Ministry of Economy and so on. It has worked in training of personnel working at the institutions that submit requests to the Laboratory (SERPAJ, Monastery of San Francisco, Ministry of Economy, CONABIP, etc) regarding topics of preventive conservation. It has realised a mockup of bibliographical recovery of damaged material after any climate disasters and has conducted surveys and evaluations from the point of view of preventive conservation. In this sense and as an

When the border talks: Singularities of the Argentine-Chilean relationship in recent decades

Directory of Open Access Journals (Sweden)

Miryam Colacrai

2016-07-01

Full Text Available The paper deals with bilateral relations between Argentina and Chile in recent decades, highlighting the potential of their new border relations. It assumes that the wide range of governmental actors, subnational and local entities linking each other have given this a unique dynamic border and are considered spaces of cooperation. The article is descriptive-reflective and is organized around a series of questions about the continued search for Argentine-Chilean border integration since the nineties and the construction of top-down and bottom-up institutional agreements. Within the variety of links, some remarkable examples are selected for the article like the "Integration Committees", the settlement of the Central West of South America Integration Zone (Zicosur and the Argentine-Chilean cooperation in Antarctica. It stresses the integrationist Maipú Treaty (2009 and institutions that charge different instances of bilateral dialogue.

CNEA/ANL collaboration program to develop an optimized version of DART validation and assessment by means of U{sub 3}Si{sub x} and U{sub 3}O{sub 8-}Al dispersed CNEA miniplate irradiation behavior.

Energy Technology Data Exchange (ETDEWEB)

Solis, D.

1998-10-16

The DART code is based upon a thermomechanical model that can predict swelling, recrystallization, fuel-meat interdiffusion and other issues related with MTR dispersed FE behavior under irradiation. As a part of a common effort to develop an optimized version of DART, a comparison between DART predictions and CNEA miniplates irradiation experimental data was made. The irradiation took place during 1981-82 for U3O8 miniplates and 1985-86 for U{sub 3}Si{sub x} at Oak Ridge Research Reactor (ORR). The microphotographs were studied by means of IMAWIN 3.0 Image Analysis Code and different fission gas bubbles distributions were obtained. Also it was possible to find and identify different morphologic zones. In both kinds of fuels, different phases were recognized, like particle peripheral zones with evidence of Al-U reaction, internal recrystallized zones and bubbles. A very good agreement between code prediction and irradiation results was found. The few discrepancies are due to local, fabrication and irradiation uncertainties, as the presence of U{sub 3}Si phase in U{sub 3}Si{sub 2} particles and effective burnup.

The Haleakala Argentine ant project: a synthesis of past research and prospects for the future

Science.gov (United States)

Krushelnycky, Paul; Haines, William; Loope, Lloyd; Van Gelder, Ellen

2011-01-01

1. The Haleakala Argentine Ant Project is an ongoing effort to study the ecology of the invasive Argentine ant in the park, and if possible to develop a strategy to control this destructive species. 2. Past research has demonstrated that the Argentine ant causes very significant impacts on native arthropods where it invades, threatening a large portion of the park’s biodiversity in subalpine shrubland and alpine aeolian ecosystems. 3. Patterns of spread over the past 30+ years indicate that the invasion process is influenced to a substantial degree by abiotic factors such as elevation, rainfall and temperature, and that the ant has not reached its potential range. Predictions of total range in the park suggest that it has only invaded a small fraction of available suitable habitat, confirming that this species is one of most serious threats to the park’s natural resources. 4. Numerous experiments have been conducted since 1994 in an attempt to develop a method for eradicating the Argentine ant at Haleakala using pesticidal ant baits. Thirty baits have been screened for attractiveness to ants in the park, and ten of these were tested for effectiveness of control in field plots. While some of these baits have been very effective in reducing numbers of ants, none has been able to eliminate all nests in experimental plots. 5. Research into a secondary management goal of ant population containment was initiated in 1996. By treating only expanding margins of the park’s two ant populations with an ant pesticide, rates of outward spread were substantially reduced in some areas. While this strategy was implemented from 1997 to 2004, it was ultimately discontinued after 2004 because of the difficulty and insufficient effectiveness of the technique. 6. In order to achieve the types of results necessary for eradication, the project would probably need to explore the possibility of developing a specialized bait, rather than relying on a commercially produced bait. An

Radiological impact of the management of radioactive waste arising from the Argentine Nuclear Programme

International Nuclear Information System (INIS)

Migliori de Beninson, A.; Cancio, D.

1984-01-01

The Argentine nuclear programme, as it stands at present, provides for the construction of four nuclear power plants in addition to those of Atucha I and Embalse and for the establishment of such fuel cycle facilities as are required to supply all of these plants. This paper evaluates the radiological impact (collective dose commitment) expected from the management of the radioactive wastes arising in the facilities mentioned above throughout the useful life of the reactors. The maximum individual doses to be expected as a result of the planned high-level-waste repository are also estimated. The evaluations presented are partly specific to the sites under consideration, but they also include estimates of the total collective dose commitments resulting from the management of radioactive waste under the Argentine nuclear programme. (author)

Argentine Radiation Protection Society Experience in RP education and training

International Nuclear Information System (INIS)

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

2003-01-01

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)

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.

Public involvement in the decision making process, Argentine experience

International Nuclear Information System (INIS)

Clein, D.

1999-01-01

In the frame of a young participative democracy the Comision Nacional de Energia Atomica (C.N.E.A.), technical and legal responsible for radioactive waste management, is developing a plan for the close out of tailings facilities from past mining and milling operations and the environmental restoration of nine different sites in six provinces all over the country. In the first site, Malargue Facility, different activities have been developed promoting public involvement in the decision making process. The lessons learned and the experience acquired have given the background for the systematization of public consultation in the ongoing and future stages of the plan. Malargue's experience in this field will be analyzed stressing on different aspects considered of importance for the design of a communicational strategy adapted to the characteristics of a society without experience in this field. The influence of public concern on conservative bias of technical decisions will be evaluated. (author)

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.

Nuclear trade: An approach to the Argentine situation

International Nuclear Information System (INIS)

Antoniotti, A.A.; Paez, M.R.

2006-01-01

Under the Argentine nuclear trade regime, from the early stages of nuclear development an actual and strict monopoly governed the transfer of nuclear materials. That meant that the Federal State took the control as user, producer, purchaser or seller. This policy was inspired and clearly echoed by similar ones developed by other countries with important development in the nuclear field. This paper discusses the types of contract on nuclear commerce, the relation with costs incurred by the nuclear industry, ways in which the Federal State intervenes in nuclear commerce, and comparative policies in other fields or products in Argentina. (author)

Radiation technology for sewage sludge treatment: The Argentine project

International Nuclear Information System (INIS)

Graino, J.G.

2001-01-01

Within the environmental applications of ionizing radiation, disinfection of wastewaters or sewage sludges is one of the most best known. Argentina based the project of a full scale irradiation plant on the gamma irradiation application, utilizing Argentine made Cobalt-60 sources. The design characteristics, process descriptions and costs are included. The research project developed information about the irradiation effects on the sludges with respect to plant performance. For the purpose of oxi-irradiation experiments, a lab-scale pool irradiator was constructed and is described. (author)

Nuclear relevant installations licensing methodology in the Argentine Republic

International Nuclear Information System (INIS)

Paganini, C.E.

1986-01-01

A review of the requeriments of the Nuclear Installations Advisory Committee on Licensing (CALIN) from the nuclear security point of view, is presented. The methodology applied by the CALIN for the licensing in the Argentine Republic is included as well as codes, standards of applications and the interaction between the licensing Authority and the Responsible Entity during the whole process. Finally, the Atucha II nuclear power plant's licensing, in construction at present, is explained and the standard, of the licensing schedule, is presented graphically. (author) [es

Huellas del patrimonio cultural italiano en las letras argentinas / Traces of Italian cultural heritage in Argentine literature

Directory of Open Access Journals (Sweden)

Daniel Alejandro Capano

2014-12-01

This research seeks to release the cultural traces (linguistic, literary, folk left by the intense Italian immigration flow to the country in contemporary Argentine writers such as Raschella, Gambaro and Barrella. The theoretical framework includes re-examination of concepts like “memory”, “culture”, “multiculturalism”, “exile”, “identity”, “sense of belonging”, and the incorporation of the meme notion, before properly tackling the texts of the aforementioned authors. Such semiotic bunches will eventually confirm hypotheses and lead to the conclusions. The corpus will account for a testimonial literature which shows the active status of a cultural stratum fed by the epic lived by the Italian immigrants in Argentine.

Le système d’information sur la biodiversité de l’administration des parcs nationaux argentins

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Leonidas Lizarraga

2014-06-01

Full Text Available Introduction Le système d’information sur la biodiversité (SIB, Sistema de Información de Biodiversidad de l’administration des parcs nationaux argentins (APN, Administración de Parques Nacionales a été lancé en 2002, avec le soutien du Global Environment Fund (GEF dans le cadre du Projet de préservation de la biodiversité mené par l’État argentin. Le dispositif, abrégé en SIB-APN, est composé d’un ensemble de bases de données thématiques et d’un système d’information géographique : son ob...

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...

Le tournesol en Argentine : situation et défis

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Devoto Rubén

2000-05-01

Full Text Available Quatrième culture nationale, le tournesol approche les 6 millions de tonnes de graines récoltées par an et fait de l’Argentine le premier producteur mondial. L’augmentation de sa production est accompagnée par un essor remarquable des activités de trituration, concentrées dans les sites portuaires d’exportation. Du coup, l’Argentine se hisse également au rang de premier exportateur mondial des produits dérivés : huile et tourteaux. À l’avenir, le tournesol devrait continuer à se développer. Son aptitude à supporter des sols et des climats frais et secs lui permet de s’étendre au-delà de la Pampa humide, jusqu’au sud-ouest de la province de Buenos Aires, sa zone de prédilection qu’il investit de plus en plus, au fur et à mesure de la poussée du soja dans les autres zones pampéennes. L’utilisation de graines hybrides, précoces et de meilleur rendement, pourrait être complétée par l’emploi de graines transgéniques. Mais son expansion potentielle n’interviendra qu’à la condition de relever certains défis : le développement de nouvelles variétés, l’obtention d’une meilleure qualité pour les produits dérivés et l’amélioration des moyens logistiques de commercialisation et d’exportation.

Production of kits for the labelling with 113sup(m)In and sup(99m)Tc, at the CNEA

International Nuclear Information System (INIS)

Palcos, M.C.; Kurcbart, Horacio; Nowotny, G.; Ramos, Elsa; Riesgo, J.G.; Mitta, A.E.A.

1978-05-01

The actual state of the production of radiopharmaceuticals in the form of reagents kits at the C.N.E.A. is described. This could allow the users to label compounds with sup(113m)In and sup(99m)Tc in an easy and reproducible way. At present, the following sets are provided routinarily a) To label with sup(99m)Tc: Albumin macroaggregates: calcium gluconate; antimonium sulfide colloid, sodium phytate; sodium calcium DTPA; seroalbumin; sodium pyrophosphate; sodium citrate. b) To label with sup(113m)In: albumin macroaggregates; PVP-bicarbonate; DTPA; human seroalbumin. Regarding products in a developping stage, we have: to labed with sup(99m)Tc: dimercapto-succinic acid, set for the labelling of human erythrocytes, set for sup(113m)In and sup(99m)Tc concentration and bleomicin; to label with sup(113m)In: EDTMP sup(99m)In. (author) [es

Annual report 2000. ABACC - Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials, RJ, Brazil

International Nuclear Information System (INIS)

2000-01-01

This document reports the general activities of the ABACC - Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials during the year of 2000, covering safeguards, accounting and control of nuclear materials

Accountability and non-proliferation nuclear regime: a review of the mutual surveillance Brazilian-Argentine model for nuclear safeguards

International Nuclear Information System (INIS)

Xavier, Roberto Salles

2014-01-01

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)

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.

Agriculture urbaine : Rosario, en Argentine, récolte les fruits de ses ...

International Development Research Centre (IDRC) Digital Library (Canada)

7 oct. 2010 ... C'est en cultivant leur propre potager que des milliers de familles de la ville de Rosario, en Argentine, sont parvenues à se nourrir tout au long de la crise économique qui a récemment frappé leur pays. La ville compte aujourd'hui plus de 800 jardins communautaires qui, en plus de nourrir quelque 40 000 ...

Transmission pricing in privately-owned electricity grids: An illustration from the Argentine electricity pool

International Nuclear Information System (INIS)

Abdala, Manuel A.

2008-01-01

The Argentine electricity reform of 1992 offers an interesting example of decentralized transmission pricing arrangements within a competitive system. This paper is a shortened version of an original analysis made in 1994 of the regulation of the Argentine transmission system, with emphasis on investment cost allocation rules. To make up for the limitation of short-run marginal cost (SRMC) pricing, incentives on service quality were put in place, including penalties for lack of line availability. The mechanism for capacity expansion, based on ad-hoc rules for allocations of investment costs, had the potential to produce non-optimal investment outcomes, as such rules ignored beneficiaries on the demand side. For fine tuning of this system, I proposed an alternative rule based on traditional welfare analysis that broadens the universe of identified beneficiaries, and thus can be expected to produce a fairer outcome on investment cost allocation, reducing the potential risks of non-optimal investment. A brief postscript comments on the paper from the perspective of 2007. (author)

The national law on nuclear activity: some consequences

International Nuclear Information System (INIS)

Gonzalez Acosta, G.

1997-01-01

This article describes the contents of the new National Law on Nuclear Activities of the Argentine Republic, analysing the functions of the National Atomic Energy Commission (CNEA), the Nuclear Regulatory Authority (ARN) (former National Board of Nuclear Regulation -ENREN) and the privatisation of the nuclear power generation performed by the enterprise Nucleoelectrica Argentina S.A. (NASA). It also includes some comments about political and legislative records of the Law in the framework of the Nation's reorganization undertaken by the National Government for the privatisation of the rendering of public services, such as the production of energy and related activities. The Law was approved by Law 24.804 of April 2, 1997, and published in the Official Bulletin of the Argentine Republic on April 25, 1997. In accordance with the provisions of this Law, the National Government, through the above mentioned organisations, will fix the nuclear policy and the functions of research, development, surveillance and control of the nuclear activity. Also, as part of the execution of the nuclear policy, all the obligations accepted by Argentina as signatory party to the Treaty for the Prohibition of Nuclear Weapons in Latin America and the Caribbean (Tlatelolco Treaty), the Treaty on Non-Proliferation of Nuclear Weapons (TNP), the Agreement between the Argentine Republic and the Federative Republic of Brazil through the Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials (ABACC) and the International Atomic Energy Agency (IAEA) to enforce Safeguards, in addition to the commitments signed by Argentina as a member of the Suppliers Group and the National Control System for Sensitive Exports, shall be met [es

Historical balance of nitrogen, phosphorus, and sulfur of the Argentine Pampas

OpenAIRE

Álvarez, Roberto; Steinbach, Haydee S; de Paepe, Josefina L

2016-01-01

A surface balance for nitrogen (N), phosphorus (P), and sulfur (S) was performed for the Argentine Pampas during the 1870-2010 time interval, comprising the agricultural expansion period in the region. Nitrogen inputs accounted in the balance were atmospheric deposition, symbiotic fixation, and fertilization. Outputs included were grain harvest and livestock products. P and S balances included atmospheric deposition and fertilization as inputs and the same outputs than in the case of N balanc...

Individual Rules for Trail Pattern Formation in Argentine Ants (Linepithema humile)

OpenAIRE

Perna, Andrea; Granovskiy, Boris; Garnier, Simon; Nicolis, Stamatios C.; Labédan, Marjorie; Theraulaz, Guy; Fourcassié, Vincent; Sumpter, David J. T.

2012-01-01

We studied the formation of trail patterns by Argentine ants exploring an empty arena. Using a novel imaging and analysis technique we estimated pheromone concentrations at all spatial positions in the experimental arena and at different times. Then we derived the response function of individual ants to pheromone concentrations by looking at correlations between concentrations and changes in speed or direction of the ants. Ants were found to turn in response to local pheromone concentrations,...

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.

Argentine Beef Demand and Household Choices of Retail Channels

Directory of Open Access Journals (Sweden)

Gustavo Rossini

2014-07-01

Full Text Available Household choices of outlet retail channels in beef purchases depend on several characteristics related to the quality of the product, convenience and ease of purchase, and economic factors such as price, income and payment methods. The aim of this paper is to study the influence of demographic and socio-economic attributes in the choice made by argentine consumers using a Multinominal Logit Model. The results show that the total number of purchases, the type of household, payment methods, and gender and schooling years of household head are the most relevant variables in the sample.

“Dublin Traitors” or “Gallants of Dublin” The Argentine Newspapers and the Easter Rising

Directory of Open Access Journals (Sweden)

Mariano Galazzi

2016-03-01

Full Text Available The Easter Rising was a turning point in contemporary Irish history. Although it lasted for a few days, from Monday 24 to Saturday 29 April, 1916, it had great impact in Ireland itself, and it also aroused considerable interest in many other countries, particularly in those with a significant Irish community, as in the case of Argentina. The aim of this paper is to study the way in which the contemporary Argentine graphic media (published in Spanish and in English presented and commented about the events that took place in Dublin. While it will try to contribute to the knowledge of the global echoes of the Easter Rising, this analysis will seek to help in a better understanding of the ideas of the English-speaking groups in Argentina, and particularly of the Irish community in that country, a group formed mainly by Argentine-born people of Irish descent.

Studies of Vitrification of Ion-Exchange Resins. A Joint USA-Argentina Collaborative Work

International Nuclear Information System (INIS)

Hutson, N.D.; Herman, C.A.; Zamecnik, J.R.; Sundaram, S.K.; Perez, J.M.; Hoeffner, S.L.; Russo, D.O.; Sterba, M.

2003-01-01

Under the Science and Technology Implementing Arrangement for Cooperation on Radioactive and Mixed Waste Management (JCCRM), the U.S.Department of Energy (DOE) is helping to transfer waste treatment technology to international atomic energy commissions.As part of the JCCRM, DOE has established a collaborative research agreement with the Comision Nacional de Energia Atomica (Cnea).The Cnea is investigating treatment and disposal options for organic ion exchange resins currently stored at two nuclear power plants in the Republic of Argentina.The major hazards of the ion exchange resins are their organic composition and the contaminants that are present on the resins after purification processes.The principal contaminants are usually the radioactive species that are removed.For these studies, actual non-radioactive resins from Argentina's Embalse and Atucha plants were tested.The glass produced during the runs was durable was measured by the Product Consistency Test (PCT).The product had a predictable, mostly amorphous composition throughout the demonstrations; though there was some evidence of the formation of clinopyroxene crystals.The immobilized product represented an approximately 70% volume reduction from the simulated Argentine ion exchange resin (i.e., a reduction from the volume of as-stored wet resin to the volume of the ultimate borosilicate glass product).For all runs, the radioactive surrogate retention was near 100%

Workers select mates for queens: a possible mechanism of gene flow restriction between supercolonies of the invasive Argentine ant

Science.gov (United States)

Sunamura, Eiriki; Hoshizaki, Sugihiko; Sakamoto, Hironori; Fujii, Takeshi; Nishisue, Koji; Suzuki, Shun; Terayama, Mamoru; Ishikawa, Yukio; Tatsuki, Sadahiro

2011-05-01

Some invasive ants form large networks of mutually non-aggressive nests, i.e., supercolonies. The Argentine ant Linepithema humile forms much larger supercolonies in introduced ranges than in its native range. In both cases, it has been shown that little gene flow occurs between supercolonies of this species, though the mechanism of gene flow restriction is unknown. In this species, queens do not undertake nuptial flight, and males have to travel to foreign nests and cope with workers before gaining access to alien queens. In this study, we hypothesized that male Argentine ants receive interference from workers of alien supercolonies. To test this hypothesis, we conducted behavioral and chemical experiments using ants from two supercolonies in Japan. Workers attacked males from alien supercolonies but not those from their own supercolonies. The level of aggression against alien males was similar to that against alien workers. The frequency of severe aggression against alien males increased as the number of recipient workers increased. Cuticular hydrocarbon profiles, which serve as cues for nestmate recognition, of workers and males from the same supercolony were very similar. Workers are likely to distinguish alien males from males of their own supercolony using the profiles. It is predicted that males are subject to considerable aggression from workers when they intrude into the nests of alien supercolonies. This may be a mechanism underlying the restricted gene flow between supercolonies of Argentine ants. The Argentine ant may possess a distinctive reproductive system, where workers participate in selecting mates for their queens. We argue that the aggression of workers against alien males is a novel form of reproductive interference.

Alcohol consumption and violence among Argentine adolescents.

Science.gov (United States)

Pierobon, Mariaelena; Barak, Mariam; Hazrati, Sahel; Jacobsen, Kathryn H

2013-01-01

This study investigated the association between alcohol and violence among Argentine youth. Data from the 2007 Argentina Global School-based Student Health Survey (GSHS), a nationally representative survey of middle school students, were examined using age-adjusted logistic regression models. Of the 1,328 participating students aged 13 to 15 years old, 51.9% reported drinking alcohol in the previous month, with higher rates among males (p=0.04) and older students (pbullying, used tobacco or drugs, or skipped school without permission were approximately twice as likely as other drinkers to have engaged in violent activities. Public health interventions targeting violence among young adolescents should be developed in combination with alcohol education programs. Copyright © 2013 Sociedade Brasileira de Pediatria. Published by Elsevier Editora Ltda. All rights reserved.

Nuclear activity. Decree No. 1.390. Regulation of Law No. 24.804 (27-Nov-1998; B.O. 4-Dec-1998)

International Nuclear Information System (INIS)

1998-01-01

This decree regulates various aspects of the National Law of Nuclear Activity of the Argentine Republic, in order to determine its scope, define the procedures for its application, and establish the executive functions of the institutions emerging from this Law: Empresa Nucleoelectrica Argentina Sociedad Anonima (NASA), Comision Nacional de Energia Atomica (CNEA) and the Autoridad Regulatoria Nuclear (ARN), former Ente Nacional Regulador Nuclear. The National State shall establish the nuclear policy and shall develop the Research and Development functions through the Comision Nacional de Energia Atomica (CNEA) and the regulatory and control functions through the Autoridad Regulatoria Nuclear (ARN). The nuclear activities of production, research, development and service rendering which might be organised commercially, shall be implemented within the framework of the nuclear policy and regulation exercised within the competence of the above mentioned organisms. The Commission shall have to assume the responsibility of the management of radioactive wastes of low, medium and high activity and establish the acceptance requirements that shall have to be approved by the ARN. Moreover, it shall determine the shut-down of the nuclear power plants and any other relevant nuclear facility concurrently with ARN, through the Shut-down Project of each facility. With the aim of the privatisation of the nuclear power generation activity depending from the enterprise NASA, the constitution of a society is set up: 'Generadora Nuclear Argentina Sociedad Anonima' (GENUAR SA). Also, the amount of the royalty that shall be paid to CNEA for research and development activities is fixed. The above mentioned society will be the holder of the concession of the use of nuclear goods and the responsible entity for the construction and/or operation licenses

Annual report 2004 of ABACC - Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials, RJ, Brazil

International Nuclear Information System (INIS)

2004-01-01

This document reports the general activities of the ABACC - Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials during the year of 2004, covering safeguards, accounting and control of nuclear materials

How Belgium helped establish a surveillance programme for Argentina's Atucha-2

Energy Technology Data Exchange (ETDEWEB)

Mitev, Lubomir [NucNet, Brussels (Belgium)

2015-02-15

Collaboration between Belgian experts and Argentina on the commissioning of Argentine reactors helped overcome problems caused by delays with construction. Marc Scibetta, deputy manager for nuclear materials science, from the Belgian Nuclear Research Centre (SCK CEN) gave an interview in which he told some facts to Lubomir Mitev of NucNet. The cooperation between SCK CEN an Argentina's Comision Nacional de Energia Atomica (CNEA) started in 2002. The first project was a support for the safety evaluation of the Atucha-1 reactor pressure vessel. When Argentina resumed the construction of Atucha-2 in 2006 - originally, construction started in 1981 but was suspended in 1985 due to financial reasons -, SCK CEN was asked to develop and implement a surveillance programme for the unit.

Self-Assessment of Governance Teams in an Argentine Private University: Adapting to Difficult Times

Science.gov (United States)

Durand, Julio; Pujadas, Carlos

2004-01-01

Argentine Universities like similar institutions all around the world are facing a complex and challenging environment that demands a more sophisticated leadership and the development of complex managerial skills. In this paper we propose that enhancing the quality of collective decision making, and building more complex teams as a way to preserve…

Acquisition Logistics Guidelines for Improving the Argentine Air Force Weapon System Acquisition Process

Science.gov (United States)

1999-03-01

the Argentine Air Force Academy, in 1979. He earned a degree as an Aeronautical and Mechanical Engineer from Escuela de Ingenieria Aeronäutica in...Independent Assessments Innovative Practices Continuos Improvement Legality of Weapons Under International Law Software Intensive Systems...optimize total system performance and life cycle cost. The term total implies the prime mission equipment -hardware and software -, its operational and

Electric power and the environment: An analysis of pollutant emissions at Argentine state-owned electric power stations

Energy Technology Data Exchange (ETDEWEB)

Carnevali, D; Suarez, C E [Instituto de Economia Energetica, San Carlos de Bariloche (Argentina)

1991-08-01

This paper describes the impact on particulate and 'greenhouse gases' emissions of substitution policies implemented by Argentine state-owned electric power stations. Those policies involve the substitution, on the one hand, of hydroelectric and nuclear energy for conventional thermal energy and, on the other hand, of natural gas for fuel oil, diesel oil and coal. As additional investments are required in conventional thermal power stations to prevent environmental pollution, the investment savings generated by substitution policies have been calculated. While the environmental impacts of hydroelectric, nuclear and natural gas facilities is locally significant and is experienced in geographical areas away from cities, there can be no doubt that the substitution policies implemented in the Argentine electricity sector have overall both ecological and economic benefits. (author). 1 ref., 8 figs, 2 tabs.

Progress and turning points in legal development of native forests protection at the argentine provincial and uruguayan jurisdictions

Directory of Open Access Journals (Sweden)

Clara María Minaverry

2017-04-01

Full Text Available The general purpose of this paper is to investigate native forests protection regulatory development level, in a selection of argentine provinces in possession of valuable ecosystem forest´s resources, such as the Andean-Patagonian ones. The especial objectives are: To state if provincial regulations have complied with national native forests environmental protection law 26.331 (and if it regulates water resources, and to make a comparative analysis with Uruguay. This is an exploratory research, where analytical comparative method and legal hermeneutics were applied to this study. We could conclude that law 26.331 exceeded some of the selected argentine provincial regulations outlines, and that Uruguay does not have enough regulatory development in order to make an overall comparative analysis.

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.

Radiological impact of the Argentine Nuclear Programme

International Nuclear Information System (INIS)

Gonzalez, A.J.

1983-01-01

An assessment is made of the radiological impact resulting from the activities carried out so far under the Argentine Nuclear Programme, together with a prediction of the impact which could result from the future activities planned under that Programme. The average individual risks and the radiological detriment due to the various activities are determined in terms of the average individual effective dose equivalents and the collective effective dose equivalent commitments. The assessments cover exposures of occupationally exposed workers and the public. The data obtained indicate that both the risks and the resultant detriment are reasonably comparable with those derived from other similar programmes. Moreover, they clearly indicate that the radiological impact of the Programme is tending to decrease with time so that it can be assumed that the radiological impact per unit of practice will be even lower in future. (author)

Cuticular hydrocarbons correlate with queen reproductive status in native and invasive Argentine ants (Linepithema humile, Mayr)

Science.gov (United States)

Diaz, Mireia; Lenoir, Alain; Ivon Paris, Carolina; Boulay, Raphaël; Gómez, Crisanto

2018-01-01

In insect societies, chemical communication plays an important role in colony reproduction and individual social status. Many studies have indicated that cuticular hydrocarbons (CHCs) are the main chemical compounds encoding reproductive status. However, these studies have largely focused on queenless or monogynous species whose workers are capable of egg laying and have mainly explored the mechanisms underlying queen-worker or worker-worker reproductive conflicts. Less is known about what occurs in highly polygynous ant species with permanently sterile workers. Here, we used the Argentine ant as a model to examine the role of CHCs in communicating reproductive information in such insect societies. The Argentine ant is unicolonial, highly polygynous, and polydomous. We identified several CHCs whose presence and levels were correlated with queen age, reproductive status, and fertility. Our results also provide new insights into queen executions in the Argentine ant, a distinctive feature displayed by this species in its introduced range. Each spring, just before new sexuals appear, workers eliminate up to 90% of the mated queens in their colonies. We discovered that queens that survived execution had different CHC profiles from queens present before and during execution. More specifically, levels of some CHCs were higher in the survivors, suggesting that workers could eliminate queens based on their chemical profiles. In addition, queen CHC profiles differed based on season and species range (native vs. introduced). Overall, the results of this study provide new evidence that CHCs serve as queen signals and do more than just regulate worker reproduction. PMID:29470506

Teófilo Tabanera, Father of the Argentine Space Program

Science.gov (United States)

de León, Pablo; Tabanera, Marcela; Tabanera, Marisol

2017-08-01

No other figure was able to organize and catalyze the seminal interest of space exploration in Argentina more than Teófilo Tabanera. Born in 1909, Tabanera showed an early interest in the possibilities of space travel and dedicated most of his life to popularize it in his country. He created the Sociedad Argentina Interplanetaria (1949), which was the first space enthusiast's organization in Latin America. Present in the first meeting of representatives of various space societies, which led to the creation of the International Astronautical Federation, Tabanera was able to bring his enthusiasm to this new organization. A prolific writer, Tabanera wrote the first books about space exploration in Spanish, and organized many courses and conferences on the subject. When the Comisión Nacional de Investigaciones Espaciales (the Argentine Space Agency) was created in 1960 by a decree of President Arturo Frondizi, Tabanera was appointed as its first administrator. There, with meager funds, he organized launch campaigns and international projects on sounding rockets. Thanks to his knowledge of the international space sector, Tabanera invited many experts to Argentina, among them Wernher von Braun and even the Apollo XI crew, just a few months after their return from the Moon. He continued his activities in the IAF (International Astronautical Federation) serving as vice president for seven terms, and was a cofounder of the International Academy of Astronautics (I.A.A.). His many contributions, both to the Argentine and international space sector, are a testimony to his undying enthusiasm and interest in space as a way of advancing humankind.

The nuclear community. An anthropological look on the Argentine nuclear development

International Nuclear Information System (INIS)

Gaggioli, Nayme N.

2001-01-01

The Argentine development in the nuclear field is analyzed from an anthropological and sociological standpoint. The author has made his 'field work' at the Reactor and Power Plants sector of the National Atomic Energy Commission. She examines the perception that the scientists and other workers of the nuclear field have of the role of its discipline and consequently of its own role in the society. The analysis is carried out into the framework of the situation of nuclear energy in the world and in Argentina in particular

Annual report 2001. ABACC 10 years - Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials, RJ, Brazil

International Nuclear Information System (INIS)

2001-01-01

This document represents the 2001 Annual report. ABACC 10 years - Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials during the year of 2000, covering safeguards, accounting and control of nuclear materials

Cosmic radiation dosimetry in international flights argentine airlines

International Nuclear Information System (INIS)

Ciancio, Vicente R.; Oliveri, Pedro V.; Di Giovan B, Gustavo; Ciancio, Vanina L.; Lewis, Brent J.; Green, Anna R.; Bennet, L.

2008-01-01

Full text: Introduction: In commercial aviation the most important determinants of radiation exposure in humans are the altitude, latitude, flight duration and the solar cycle's period. This study was conducted to address this type of exposure trough radiation dosimetry. Method: The study was performed in the business-class cabin of an Airbus 340-200 aircraft, provided by Argentine Airlines, during 2 flights routes: New York-Miami-Buenos Aires (trans equatorial) and Buenos Aires-Auckland (circumpolar). Measurements addressed the electromagnetic spectrum or low Linear Energy Transfer (LET) and corpuscular radiation (High LET). The instruments used were an Ion Chamber (IC), to measure the ionizing component of radiation (i.e., gamma radiation), the SWENDI, to measure only the neutron component, and the Tissue Equivalent Proportional Counter (TEPC) for measuring all radiation types. Results: The routes' dose rates are presented in the table. TEPC rates agreed with the LET findings. The total dose rates of high latitude flights were higher than those of low latitude flights. The SWENDI (High LET) results for the flights over the equator, at low latitude, represented only 1/3 of the total radiation. The New York-Miami and Buenos Aires-Auckland flights, at high latitude, represented just under 1/2 of the Total radiation (-45%). Conclusion: Based on the results of this study, the annual dose rates of radiation exposure of air crew personnel serving on international flights offered by Argentine Airlines is between 3 and 7 mSv. This rate is higher than the maximum recommended for the general population by the International Commission on Radiological Protection (ICRP), which is 1 milli Sv./y. Therefore, these personnel must be officially considered 'Occupationally Exposed to Radiation' in way to provide the appropriate measures that must be implemented for their protection in accordance to ICRP guidelines. Dose(uSv): Route N Y-Miami, IC 6.07, SWENDI 5.07, TEPC 11.04; Route

Proceedings of the 76. meeting of the Argentine Physics Association (AFA). V.3

International Nuclear Information System (INIS)

1992-01-01

Works are presented at the 76 Annual meeting of the Argentine Physics Association. The papers can be grouped under the following main topics: teaching, history and philosophy of physics, mathematical methods, classical and quantum physics, mechanics and fields, statistical physics and thermodynamics, elementary particle physics and fields, nuclear physics, and molecular physics, atomic collisions, optics, fluid dynamics and plasmas, condensed matter, instrumentation, geophysics, astronomy and astrophysics. refs., ills

Abstracts of the 81. national meeting on physics of the Argentine Physics Association (AFA)

International Nuclear Information System (INIS)

1996-01-01

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

Annual Report 2007 - ABACC - Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials

International Nuclear Information System (INIS)

2007-01-01

This document reports activities during the year 2007 related to: technical activities as application of safeguards; management of the Quadripartite Agreement and the SCCC - Common System for Accounting and Control of Nuclear Materials; training; technical cooperation; outlook for 2008 and; institutional, administrative and financial activities; technical glossary; list of brazilian facilities; list of argentine facilities and a list of institution of nuclear area

Design of the Fuel Element for the RRR Reactor (Australia)

International Nuclear Information System (INIS)

Estevez, E.A.; Markiewicz, M.E.; Gerding, R.

2003-01-01

The supply to the Replacement Research Reactor ( RRR ) to Australia represents a technological goal for our country, as much for the designers and manufacturers of this irradiation facility ( Invap SE ), as well for the responsibles of the fuel elements ( FE ) design and the suppliers of the first core ( CNEA ).In relation with the FE, although the conceptual design and fabrication technology of the FE are similar to the just developed and qualified by CNEA ( plane plates MTR fuel type ), the characteristics of this new reactor imposes most severe operation conditions on them than in previous supplies.In that sense, two distinguishing characteristics deserve to be shown: a) The magnitude of the hydrodynamics loads acting on the FE due to the coolant ascendent flow direction, and mainly, the very high flow velocities between the fuel plates ( aproximately five times higher than which presents in others Argentine FE actually in operation. b) The use of U3Si2 as fuel material.CNEA has started a programme to qualify this type of fuel.As result of these higher loads under irradiations and with the objective to maintain the high reliability level reached by our FE ( very low failure rates ), it was necessary to introduce FE mechanical-structural design modifications respect to the ECBE or standard design version, and to verify these changes through hydrodynamics tests on a 1:1 scale prototype.In this paper it is described the mechanical-structural FE design with special emphasis in the innovatives aspects incorporated.The design criteria established in function of the solicitations and limitating effects present under irradiation conditions.Also, a brief description of the proposed programme to verify and evaluate this design is presented, including analytical and numerical calculus of stresses acting on the fuel plates and others FE components, pressure loss hydrodynamics tests and endurance essays

The Sexual Division of Administrative Labor: Feminine Careers at large Argentine Companies

Directory of Open Access Journals (Sweden)

Florencia Luci

2010-01-01

Full Text Available This article analyzes the particular conditions in which administrative careers for women develop at largeArgentine 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.

Nuclear fuel supply view in Argentina

International Nuclear Information System (INIS)

Cirimello, R.O.

1997-01-01

The Argentine Atomic Energy Commission promoted and participated in a unique achievement in the R and D system in Argentina: the integration of science technology and production based on a central core of knowledge for the control and management of the nuclear fuel cycle technology. CONUAR SA, as a fuel manufacturer, FAE SA, the manufacturer of Zircaloy tubes, CNEA and now DIOXITEC SA producer of Uranium Dioxide, have been supply, in the last ten years, the amount of products required for about 1300 Tn of equivalent U content in fuels. The most promising changes for the fuel cycle economy is the Slight Enriched Uranium project which begun in Atucha I reactor. In 1997 seventy five fuel assemblies, equivalent to 900 Candu fuel bundles, will complete its irradiation. (author)

Annual Report ABACC 2009 - Brazilian-Argentine Agency for the Accounting and Control of Nuclear Materials

International Nuclear Information System (INIS)

2009-01-01

This document reports the actives during the year 2009 related to: technical activities as application of safeguards; management of the Quadripartite Agreement and the SCCC - Common System for Accounting and Control of Nuclear Materials; training; technical cooperation; institutional, administrative and financial activities; perspectives for 2010; list of inspectors; list of Brazilian and Argentine facilities subject to the Quadripartite Agreement

Distinctive Innovation Capabilities of Argentine Software Companies with High Innovation Results and Impacts

OpenAIRE

María Isabel Camio; María del Carmen Romero; María Belén Álvarez; Alfredo José Rébori

2018-01-01

The software sector is of growing importance and, due to its degree of dynamism, the identification of capabilities for innovation is vital. This study identifies capabilities variables that distinguish Argentine software companies with high innovation results and high innovation impacts from those with lesser results and impacts. It is applied to a sample of 103 companies, a measurement model and the component variables of an innovation degree index for software companies (INIs) formulated i...

The Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials (ABACC) as safeguard regional agency

International Nuclear Information System (INIS)

Alvim, C.F.

1994-01-01

The Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials - ABACC applies regional safeguards on nuclear materials in Brazil and Argentina. The framework of international agreements concerning ABACC is presented, and the characteristics and requirements that a regional nuclear safeguards organization must fulfill are discussed. (author). 2 refs, 1 tab

The Argentine Guide of Recommendations for the Correct Indications of Diagnostic Imaging Examinations

International Nuclear Information System (INIS)

Buzzi, Alfredo; Rojas, Roberto; Touzet, Rodolfo E.

2008-01-01

Full text:The aim of this Guide is the protection of the population from the risks derived from ionising radiations. The medical irradiations are the most important contribution to the human exposition to artificial ionising radiations. Since statistics indicate an increasing number of practices and facilities, the quality of these practices, its justification and its optimisation are a relevant topic for scientific societies and regulatory organisms. Since the 97/43/EURATOM Directive and the Malaga Conference most of the European countries implemented plans of action for patient radiological protection, including the search of consensus in relation to dose optimisation and the justification criteria for the indication of exams. An example of these is the Guide PR/118. In this context, three Meetings on Patient Radiological Protection took place in Argentina (initially organised by the Nuclear Regulatory Authority), where four work-groups were organised (Radiodiagnostics, Radiotherapy, Nuclear Medicine and Radiological Protection of Pregnant Women). Systematic activities began, with the institutional support of the Argentine Society of Radiology, that concluded with the elaboration of the 'Program for Patient Radiological Protection'. The analysis of the situation revealed a complex reality, that requires solutions of different degree of applicability. It was decided then to fix realistic goals for the short term that could be reached quickly with the available resources in order to obtain a modest but continuous advance without waking-up false expectations. One of the short term objectives was to start up a system to guarantee the justification of the practice, with five steps: the first is the preparation of a Guide of Recommendations (fulfilled stage); the second is to look for the validation and consensus from professional societies of other medical specialties (developing stage); the third is the diffusion, information, promotion and qualification in the use

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.

Why do gatherers no longer gather? Stigmatizing processes of consumption of wild edible plants among Chorote Indians from Argentine Chaco.

Directory of Open Access Journals (Sweden)

Gustavo Fabián Scarpa

2017-08-01

Full Text Available The article analyzes cultural change related to the consumption of wild edible plants among Chorote Indians from Argentine Chaco, especially the process of construction of prejudices regarding such practices, expressed in the form of symbols of social or religious discredit which has led to their concomitant stigmatization and contempt. The influence of hegemonic agents in the conceptualization of wild edible plants and their utilization practices is here identified and analyzed from observational, exegetical and interpretative points of view. The article specifically discusses if the abandonment of wild edible plant consumption is due to reasons  linked to environmental determinism, to the mere acquisition of new cultural practices, or to socio-religious stigmatization of old food rules among Chorote Indians from Argentine Chaco.

Knowledge management in the Argentine Nuclear Regulatory Authority

International Nuclear Information System (INIS)

Chahab, Martin

2006-01-01

In 2006, the Argentine Nuclear Regulatory Authority has initiated a regulatory knowledge management process to face the loss of knowledge resulting from retiring experts, the generation gap, and the existing need to train new human resources. A number of projects have been started together with the technical assistance of the National Public Administration Institute to preserve knowledge and render it explicit for the coming generations. These projects include 'The History of the Expert's Learning Process' in which the majority of the most critical experts have been interviewed so far. The results of this project help envision a training structure and prospective projects. An Internet Site has also been created on the Intranet in order to render knowledge explicit and facilitate the tools for knowledge management initiatives. Furthermore, ARN's knowledge map project has also been started. (author) [es

Eddy-driven sediment transport in the Argentine Basin: Is the height of the Zapiola Rise hydrodynamically controlled?

NARCIS (Netherlands)

Weijer, Wilbert; Maltrud, Mathew E.; Homoky, William B.; Polzin, Kurt L.; Maas, Leo R. M.

In this study, we address the question whether eddy-driven transports in the Argentine Basin can be held responsible for enhanced sediment accumulation over the Zapiola Rise, hence accounting for the existence and growth of this sediment drift. To address this question, we perform a 6 year

Beyond the contributory principle: changes and continuities in Argentine social policy , 2003-2011

Directory of Open Access Journals (Sweden)

Guillermo V Alonso

2015-01-01

Full Text Available The goal of this article is to analyze the transformations of Argentine social policy during Nestor Kirchner’s and Cristina Fernandez’s Administrations, from 2003 through 2011. We analyze the main social policies with more extended population coverage, especially social security programs. We will argue that at the beginning social policies were a new version of the Bismarckian social insurance, but then the government innovated in social policy breaking with the contributory principle.

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.

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.

Program description for the qualification of CNEA - Argentina as a supplier of LEU silicide fuel and post-irradiation examinations plan for the first prototype irradiated in Argentina

International Nuclear Information System (INIS)

Rugirello, Gabriel; Adelfang, Pablo; Denis, Alicia; Zawerucha, Andres; Marco, Agustin di; Guillaume, Eduardo; Sbaffoni, Monica; Lacoste, Pablo

1998-01-01

In this report we present a description of the ongoing and future stages of the program for the qualification of CNEA, Argentina, as a supplier of low enriched uranium silicide fuel elements for research reactor. Particularly we will focus on the characteristics of the future irradiation experiment on a new detachable prototype, the post-irradiation examinations (PIE) plan for the already irradiated prototype PO4 and an overview of the recently implemented PIE facilities and equipment. The program is divided in several steps, some of which have been already completed. It concludes: development of the uranium silicide fissile material, irradiation and PIE of several full-scale prototypes. Important investments have been already carried out in the facilities for the FE production and PIE. (author)

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.

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.

Simulation of the Argentine electric generation park and its possible expansion under the restriction of availability of fossil fuels

International Nuclear Information System (INIS)

Giubergia, Jorge H.; Coppari, Norberto R.; Rey, Carlos F.

2003-01-01

MESSAGE program was used to simulate the Argentine electric generation park for 25 years, taking as a base the year 2000 and different scenarios of internal and external demand. As the Argentine electric system is strongly dependent on natural gas, the increase of the demand has been analyzed with, and without, the assumption of shortage of this fuel during the winter periods. Equipment and fuels already available have been selected to cover the increase of the demand taking into account technical and economic factors. The completion of Atucha II nuclear power plant, the increase of the water level of the hydroelectric Yacireta plant and natural gas combined-cycle plants are necessary even if no restrictions in the gas supply are foreseen. On the other hand new nuclear plants, new hydroelectric projects and gas oils fueled turbines will be necessary if natural gas shortage is assumed

Influence of toxic bait type and starvation on worker and queen mortality in laboratory colonies of Argentine ant (Hymenoptera: Formicidae).

Science.gov (United States)

Mathieson, Melissa; Toft, Richard; Lester, Philip J

2012-08-01

The efficacy of toxic baits should be judged by their ability to kill entire ant colonies, including the colony queen or queens. We studied the efficacy of four toxic baits to the Argentine ant, Linepithema humile (Mayr) (Hymenoptera: Formicidae). These baits were Xstinguish that has the toxicant fipronil, Exterm-an-Ant that contains both boric acid and sodium borate, and Advion ant gel and Advion ant bait arena that both have indoxacarb. Experimental nests contained 300 workers and 10 queen ants that were starved for either 24 or 48 h before toxic bait exposure. The efficacy of the toxic baits was strongly influenced by starvation. In no treatment with 24-h starvation did we observe 100% worker death. After 24-h starvation three of the baits did not result in any queen deaths, with only Exterm-an-Ant producing an average of 25% mortality. In contrast, 100% queen and worker mortality was observed in colonies starved for 48 h and given Xstinguish or Exterm-an-Ant. The baits Advion ant gel and Advion ant bait arena were not effective against Argentine ants in these trials, resulting in ants are likely to be starved. Our results suggest queen mortality must be assessed in tests for toxic bait efficacy. Our data indicate that of these four baits, Xstinguish and Exterm-an-Ant are the best options for control of Argentine ants in New Zealand.

1996 Annual report

International Nuclear Information System (INIS)

1997-01-01

This annual report present information of the main activities on the scope of the radiation protection and nuclear safety of the Nuclear Regulatory Authority (ARN) of the Argentina during 1996. The activities are developed in 10 chapters and 2 appendices, were are described the activities and the bases of the Argentine Regulatory System. The followings chapters and appendices are: 1.-Evolution of the nuclear regulatory activities in the Argentina since the beginnings in the CNEA. 2.-Regulatory system, laws and regulations. 3.-Institutional relations with national and international organizations. 4. and 5.-Safeguards and inspections of the nuclear installations. 6.-Radiation control of the occupational and public doses. 7.-Radiological emergencies. 8.-Projects and tasks scientific-technological. 9.-Training courses and meetings. 10.-Economic and human recourses. Appendix I.-Regulatory documentation. Appendix II.- Inspections of nuclear installations

1996 Annual report; 1996 Informe anual

Energy Technology Data Exchange (ETDEWEB)

NONE

1998-12-31

This annual report present information of the main activities on the scope of the radiation protection and nuclear safety of the Nuclear Regulatory Authority (ARN) of the Argentina during 1996. The activities are developed in 10 chapters and 2 appendices, were are described the activities and the bases of the Argentine Regulatory System. The followings chapters and appendices are: 1.-Evolution of the nuclear regulatory activities in the Argentina since the beginnings in the CNEA. 2.-Regulatory system, laws and regulations. 3.-Institutional relations with national and international organizations. 4. and 5.-Safeguards and inspections of the nuclear installations. 6.-Radiation control of the occupational and public doses. 7.-Radiological emergencies. 8.-Projects and tasks scientific-technological. 9.-Training courses and meetings. 10.-Economic and human recourses. Appendix I.-Regulatory documentation. Appendix II.- Inspections of nuclear installations.

Telma Reca, an Argentine physician in the state (1930-1948

Directory of Open Access Journals (Sweden)

Karina Inés Ramacciotti

2018-06-01

Full Text Available This article will reconstruct the biography of the Argentine physician Telma Reca (1904-1979 who managed to get involved in academic fields and the state administration in the 30´s. We will address ourselves to tracking her professional career from her PhD degree in Medicine (1932 until her withdrawal from the División de Maternidad e Infancia del Departamento Nacional de Higiene (Maternity and Childhood Division of the National Hygiene Department in 1948. During this period, she focused her research on the study of the social conditions of juvenile delinquency on the public administration. With a critical eye, far from social exclusion and punitive measures, she managed to promote social integration through health and education policies.

TGS pipeline primed for Argentine growth, CEO says

International Nuclear Information System (INIS)

Share, J.

1997-01-01

Nowhere in Latin America has the privatization process been more aggressively pursued than in Argentina where President Carlos Menem has successfully turned over the bulk of state companies to the private sector. In the energy sector, that meant the divestiture in 1992 of Gas del Estado, the state-owned integrated gas transportation and distribution company. It was split in two transportation companies: Transportadora de Gas del Sur (TGS) and Transportadora de Gas del Norte (TGN), and eight distribution companies. TGS is the largest transporter of natural gas in Argentina, delivering more than 60 percent of that nation's total gas consumption with a capacity of 1.9 Bcf/d. This is the second in a series of Pipeline and Gas Journal special reports that discuss the evolving strategies of the natural gas industry as it continues to restructure amid deregulation. The article focuses on TGS, the Argentine pipeline system in which Enron Corp. is a key participant

Laboratory and Field Evaluations of Polyacrylamide Hydrogel Baits Against Argentine Ants (Hymenoptera: Formicidae).

Science.gov (United States)

Rust, Michael K; Soeprono, Andrew; Wright, Sarajean; Greenberg, Les; Choe, Dong-Hwan; Boser, Christina L; Cory, Coleen; Hanna, Cause

2015-06-01

The development of effective baits to control the Argentine ant, Linepithema humile (Mayr), has been problematic because foragers prefer sweet liquids, while many toxicants are insoluble in water and liquid baits are generally difficult to deliver. The incorporation of thiamethoxam and sucrose solutions into a water-absorbing polyacrylamide hydrogel provides a unique and novel carrier and method of application for liquid baits. Formulations of thiamethoxam affected the size of the hydrogels, and sucrose solutions containing 0.0003% technical thiamethoxam provided hydrogels as large as those made with 25% sucrose solution or deionized water. Concentrations of thiamethoxam as low as 0.000075% in the hydrogels provided 50% kill of workers within 3 d in a laboratory setting. In small colony studies, baiting with 0.00015 and 0.000075% thiamethoxam hydrogels provided 100% mortality of workers and queens within 8 d. An enzyme-linked immunosorbent assay indicated that thiamethoxam was absorbed into the interior of the polyacrylamide matrix. The water loss rates of the hydrogels were dependent upon the relative humidity. Polyacrylamide hydrogels with >50% water loss were less attractive to ants. Field studies in highly infested areas indicated that concentrations of 0.0006 or 0.0018% thiamethoxam were more effective than 0.00015%. Hydrogels may provide a cost-effective alternative to providing aqueous baits to control Argentine ants. © The Authors 2015. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

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.

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

Energy Technology Data Exchange (ETDEWEB)

Cretton, M.; Rost, E.; Mazzuca-Sobczuk, T.; Mazzuca, M.

2016-07-01

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. (Author)

Proceedings of the 6. Argentine congress on radiation protection and nuclear safety; Actas del 6. congreso argentino de proteccion radiologica y seguridad nuclear

Energy Technology Data Exchange (ETDEWEB)

NONE

1999-12-31

The 6th Argentine Congress on Radiation Protection and Nuclear Safety was organized by the Radioprotection Argentine Society, in Buenos Aires, between the 22 and 24 of september of 1998. In this event, were presented almost 66 papers in the following sessions, about these subjects: 1.- Safety in nuclear installations. 2.- Control of nuclear material and physical protection of nuclear installations. 3.- Programs of quality assurance. 4.- Training, technical information and public information. 5.- Physical dosimetry. 6.- Physical dosimetry and occupational radiation protection. 7.- Exposure of the natural radiation. 8.- Environmental radiological safety. 9.- Biological effects of the ionizing radiations and biological dosimetry. 10.- Radiological protection of the medical practice and the radiological emergencies. 11.- Radioactive wastes management. 12.- Transport of radioactive materials

Local’s knowledge in environmental management in argentine cost ecosystems

Directory of Open Access Journals (Sweden)

Elsa Marcela Guerrero

2014-04-01

Full Text Available In 2002 was born in Mar del Plata, Argentina, the ONG Surfrider Foundation Argentina. This organization reconciles the practice of a sport in contact with nature, surfing, and practices to protect, rehabilitate and restore diverse argentine sea ecosystems.Locally, in environmental issues, the organization is recognized because of the production and dissemination of coastal ecological knowledge, environmental problems of the city and the region, and the development of specific actions in defense and protection of the “marplatense” coastline.This paper characterizes the role of the SFA like a Local Ecological Knowledge (LEK producer, describes and analyzes the actions, procedures and organizational strategies associated with the production, publication and dissemination of local environmental knowledge of the non-governmental organization (NGO.

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

organization is not only a key attribute responsible for the ecological dominance of these ants, but also an evolutionary paradox because relatedness between nestmates is effectively zero. Recently, it has been proposed that, in the Argentine ant, unicoloniality is a derived trait that evolved after its......Kinship among group members has long been recognized as a main factor promoting the evolution of sociality and reproductive altruism, yet some ants have an extraordinary social organization, called unicoloniality, whereby individuals mix freely among physically separated nests. This type of social...... 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...

Trauma and Contemporary Forms of Subjectivity: Contributions of Argentine Psychoanalysis.

Science.gov (United States)

Volnovich, Juan Carlos

2017-04-01

This paper offers arguments to justify the relevance of psychoanalysis-psychoanalyses-in present-day Argentina and reflects on the stance taken by psychoanalysts with different theoretical perspectives in the face of the havoc wreaked by state terror (1976-1983). To this end, the author focuses on the pioneers' traits, the significance of the Argentine Psychoanalytic Association in the 1950s and 1960s, and the impact of the departure of the Plataforma Group in 1971. The establishment of the latter opened the way for the development of a psychoanalysis tied to popular movements, sensitive to social conflict, and close to human rights organizations. The author explores both on psychoanalysts' intervention to address the social trauma resulting from the theft of babies during the dictatorship, and on their relationship with Grandmothers of Plaza de Mayo.

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

OpenAIRE

Cerdá Juan Manuel; Duarte y Ricardo Hernández

2016-01-01

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...

ABACC: annual report 2012 - Brazilian-Argentine Agency for the Accounting and Control of Nuclear Materials

International Nuclear Information System (INIS)

2012-01-01

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

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.

Post-test calculations of out-of-pile single rod burst experiments with Argentine ZRY-4 tubes using SSYST codes system

International Nuclear Information System (INIS)

Nassini, H.; Meyder, R.

1988-11-01

The calculations were performed with SSYST-3 code system. The experiments have been carried out with shortened REBEKA simulators. The main goal was to verify whether the model for describing the Zircaloy cladding deformation and rupture at high temperatures (NORA2 model) is able to predict the Argentine cladding material behaviour under such conditions. A good agreement between experimental results and model predictions was found in the range of temperatures from 700 to 850 0 C (in α phase and first half of α+β transition phase). There were some discrepances at higher temperatures, probably due to the strong influence of heating rate on material properties. According to the results of these post-test calculations, it can be concluded that NORA2 model is able to well describe the Argentine Zircaloy cladding deformation and rupture under LOCA conditions, because there was a good agreement in the range of burst (ballooning) temperatures which are expected in this type of accident. (orig./HP) [de

Tumoral expression on Her-2, E R and P R and its Clinico pathological characteristics relation in Uruguayan and Argentine patients with operable breast cancer

International Nuclear Information System (INIS)

Delgado, L; Richardet, E; Pallotta, G; Fresco, R; Aguiar, S; Camejo, N; Gonzalez, V; Ferrero, L; Heinzen, S; Martinez, A. and others

2010-01-01

Introduction: the study of biological subtype of breast cancer (B C) given by the expression tumor estrogen receptors (E R), progesterone (P R) and growth factor receptor and evolutionary. Objective: To know the profile of tumor expression of HER2, ER and P R and their relation with to characteristics clinico pathological characteristics in Uruguayan and Argentine patients with breast cancer. Material and Methods: The medical records of patients who underwent analyzed C M I-III invasive stages between 03/2006 and 03/2008 and assisted in Oncology Services where the authors are performing, which had selected determination ER, P R and HER2 by immunohistochemistry. The expression profile of these was markers compared with age at diagnosis, type and histological grade (GH) and pathological stage (TNM). Results: 291 patients (197 Uruguayan and 94 Argentine) were included whose characteristics were: mean age: 56 years, ductal carcinoma: 85%, GH 1-2: 55% stage I-II: 70%, metastasis axillary: 51%, ER / P R +: 78% HER2 + 12%. Three subtypes were defined: HER2 ER / P R + (71%), HER2 + (12% Uruguayan patients: 10%, Argentine patients: 17%) and negative Triple (TN) (17%). The joint analysis of the patients in both countries showed that subtypes TN and HER2 is associated with greater histological grade (p <0.05). Furthermore, in the group of patients Uruguayan, TN subtype was associated with younger age at diagnosis (p <0.05) subtype HER2, ER / PR +. Conclusions: The percentage of patients with CM Uruguayan invasive HER2 + subtype (10%) is smaller than that reported by other studies (17-28%) and that observed in our study Argentine group of patients. Consistent with previous studies, TN subtypes and HER2 + correlated with more undifferentiated tumors and in the group of Uruguayan patients TN appeared in younger patients

Nuclear trade: an approach on the Argentine situation

International Nuclear Information System (INIS)

Antoniotti, Americo A.; Paez, Mariano R.

2005-01-01

The Argentine nuclear trade regime. Nuclear Materials. Definitions. Stages. From early times of nuclear development an actual and strict monopoly governed the transfers of nuclear materials. That meant: the Federal State took the control as user, producer, purchaser or seller. This policy was inspired and clearly echoed a similar one developed by countries with important development in the nuclear field. Types of contracts on nuclear commerce. Relation with costs implied with the nuclear industry. Uranium mining. System of supplies. Development of factories of nuclear supplies. Incentives. Nuclear Power. Radioisotopes. Human Resources. Ways of intervention of the State on nuclear Commerce. The right of veto. The ownership of shares in private or public corporations. Export- import controls. Security and Safety standards. National Act of Nuclear Activity. Veto of the Executive Power to the monopoly of the exclusive national supply of uranium. Comparative policies on other fields or products in Argentina. A proposal of lege ferenda. State's right of transformation applicable to purchases and sales of nuclear materials. Exchange and loans. Cosignature of contracts, etc. (author)

Argentine regulatory experience on industrial gammagraphy in radioprotection

International Nuclear Information System (INIS)

Ermacora, Marcela G.

2006-01-01

Industrial gammagraphy has always been responsible for the highest rates of radiological incidents in almost every part of the world. This is mainly due to the high activities of the radioactive sources used, which are constantly transported in the equipment that contains them between the storage and the areas of work, and is also due to work load pressures which may induce to negligence in following the operational procedures, if a strong Safety Culture does not exist. The purpose of this paper is to present the main aspects of the argentine regulations relating to radiation protection to control this practice and to contribute in this way to reduce the associated risks. In addition, some incidents occurred in Argentina during the latest years, the causes that led to those events and their relation to the in observance of the regulations in force, their consequences and the measures taken to repair them are described. Finally, the importance of the role that education and training has in the strengthening of Safety Culture, key element of all undertaking, is highlighted. (author) [es

SLR and GPS spatial techniques in ITRF. Argentine results.

Science.gov (United States)

Actis, Eloy Vicente; Huang, Dongping; Márquez, Raúl; Adarvez, Sonia; Flores, Matías; Brizuela, Diego; Nievas, Jesica; Podestá, Ricardo; Pacheco, Ana M.; Rojas, Hernán Alvis; Yin, Zhiqiang; Li, Jinzeng; Han, Yanben; Liu, Weidong; Wang, Rui

2012-08-01

Along the late 30 years spatial geodetic techniques enable us to measure horizontal and vertical deformations of the Earth’s surface with a very high precision. Performing this task we made Satellite Laser Ranging (SLR), and Global Positioning System (GPS) observations in South America ILRS 7406 Station placed at Observatorio Astronómico Félix Aguilar (OAFA) in San Juan, Argentina, accomplishing a Cooperation Agreement between CAS - NAOC and OAFA - UNSJ. Trough LAGEOS II Satellite observations we obtain rectangular coordinates of San Juan ILRS Station in the Terrestrial Reference Frame (ITR 2000), standing out that Argentine Station data were included in the late arrangements ITRF given by International Earth Rotation and Reference System Service (IERS). Spatial and temporary variations of the epoch 2010 - 2011 were evaluated finding out remarkable displacements, of about a half meter, related with seismic events on the region. We confirm these deformations by means of GP S determinations referred to Permanent GPS Station placed nearby the SLR Station.

Detection of Argentine onions treated with 60 Co irradiation

International Nuclear Information System (INIS)

Romanelli, Maria Fernanda; Sebastiao, Katia I.; Leite, Quilma R.; Koseki, Paula M.; Hamasaki, Koji; Villavicencio, Anna Lucia H.; Croci, Clara

2000-01-01

Brazil has been the most important MERCOSUL's purchaser of fresh onions from Argentina. The increased claim for this fresh product has forced a consensus between the members nations, as regards to phytosanitary restrictions. The radio inhibition is described on National Food Codes in Brazil and Argentina. Methods of food irradiation detection must be performed, since they increase the consumer confidence. Quick and simple screening tests indicate whether a food product has been irradiated or not. This present study verified the DNA fragments of argentine fresh onions, produced during radiation process and 6 months of storage period. The DNA fragments are analyzed for detection of irradiated foods. The irradiated onions presented extensive DNA migrations, as comets, when submitted to agarose gel electrophoresis. They also showed more shelf life compared to the unirradiated onions. The unirradiated samples exhibited only limited DNA migration. This initial screen method showed to be effective for detection of irradiated onions. (author)

Regulatory issues in the maintenance of Argentine nuclear power plants

International Nuclear Information System (INIS)

Castro, E.; Caruso, G.

1997-01-01

The influence of maintenance activities upon nuclear safety and their relevance as means to detect and prevent aging make them play an outstanding role among the fields of interest of the Argentine nuclear regulatory body (ENREN). Such interest is reinforced by the fact that the data obtained during maintenance are used - among other - as inputs in the Probabilistic Safety Analyses required for those nuclear power plants. This paper provides a brief description of the original requirements by the regulatory body concerning maintenance, of the factors that led to review the criteria involved in such requirements and of the key items identified during the reviewing process. The latter shall be taken into account in the maintenance regulatory policy, for the consequent issue of new requirements from the utilities and for the eventual publication of a specific regulatory standard. (author)

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

CERN Document Server

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

Analysis of a possible experimental assessment of a prototype fuel element containing burnable poison in the RA-3 reactor

International Nuclear Information System (INIS)

Lerner, Ana Maria; Madariaga, Marcelo

2002-01-01

The Argentine RA-3 research reactor (5 MW) is presently operated with LEU fuel by the National Atomic Energy Commission (CNEA). It belongs to the group of nuclear installations controlled, from the radiological and nuclear safety point of view, by the Nuclear Regulatory Authority (ARN). A new type of fuel elements containing burnable absorbers, with similar enrichment as the standard fuel elements but greater fissile contents, has recently been proposed for a new Argentine reactor design (RRR). In this framework the ARN considers interesting, if technically possible, the performance of an experiment in the RA-3 reactor. The experiment might enable, for such fuel element containing burnable poison, the verification of its neutronic behaviour under irradiation as well as a validation of the calculation line by comparison to measured values. It should be desirable that such experiment could reproduce as much as possible those conditions estimated for the RRR reactor, still under design in Argentina, having Silicide fuel elements with burnable poison, in the shape of cadmium wires in their structure. We here analyse a possible experiment consisting in the loading of a prototype fuel element with burnable poison in a normally loaded RA-3 core configuration. It would essentially be a standard RA-3 fuel element, having cadmium wires in its frame. This experiment would enable the verification of the prototype behaviour under irradiation, its operation limits and conditions, and particularly, the reactivity safety margins established in Argentine Standards, both calculated and measured. The main part of the experiment would imply some 200 full power days of operation at 5 MW, which would be drastically reduced if the reactor power is increased to 10 MW, as foreseen. We also show that under the proposed conditions, the experiment would not represent a significant penalty to the reactor normal operation. (author)

Measurement of empathy among Argentine cardiologists: Psychometrics and differences by age, gender, and subspecialty.

Science.gov (United States)

Borracci, Raúl Alfredo; Doval, Hernán C; Nuñez, Carmen; Samarelli, Marisa; Tamini, Susana; Tanus, Eduardo

2015-01-01

Cardiologists are involved in the management of patients with multiple cardiovascular risk factors and chronic heart diseases, so empathy is a necessary feature to deal with them. The aim of the study was to evaluate the validity and reliability of the Spanish version of the Jefferson Scale of Physician Empathy (JSPE) among Argentine cardiologists and to explore the potential differences by age, gender, and subspecialty. Between August and September 2012, we performed a survey in a non-randomized sample of 566 Spanish-speaking cardiologists of Argentina. A Principle Component Analysis (PCA) was used to explore the link between observed variables and latent variables in order to identify the factor structure. The PCA criteria for identifying the factor structure were examined with the Kaiser-Meyer-Olkin (KMO) analysis. The KMO measure of sampling adequacy was 0.86 and Bartlett's test of sphericity was highly significant (p = 0.000), determining the suitability of the data set for factor analysis. The PCA of 20 items yielded a three factor model that accounted for 40.6% of the variance. The JSPE mean rank score for women was 307.9 vs. 275.0 for men (p = 0.017). The comparison of mean rank score according to age (quartiles) showed a significant relation between older age and empathy. No difference was found when the mean rank scores were compared by respondent subspecialty. JSPE provides a valid and reliable scale to measure Argentine cardiologists' attitudes towards empathy. Female cardiologists seem to be more empathic than their male colleagues, and a positive relationship between age and empathy was found.

Serological study of brucellosis in Argentine Creole sheep.

Science.gov (United States)

López, Gustavo E; Peña, Sabrina; Escobar, Gabriela I; Hasan, Déborah B; Lucero, Nidia E

2018-01-05

Ovine cattle was introduced into America during the Spanish conquest with the second journey of Columbus to the Antilles and was disseminated throughout the region. In 1587, sheep were introduced into Argentina, later developing into the "Creole" breed. We selected 486 animals from different Argentine provinces with the aim of determining the serological status of brucellosis caused by Brucella melitensis and Brucella ovis. For the detection of antibodies against smooth Brucella spp., the Rose Bengal test (RBT) was performed as screening test while the serum agglutination test (SAT) and 2 mercapto-ethanol (2ME) were run as a confirmatory technique. Moreover, for the detection of antibodies against rough Brucella spp., we used the rapid slide agglutination test (RSAT) for screening and an indirect ELISA (IELISA) as confirmatory assay. This study showed that the total positive percentage of brucellosis due to B. ovis was 2.9%. Excluding the animals mixed with the Suffolk breed; seropositivity would be 0.6%. All animals tested negative for brucellosis caused by B. melitensis. Copyright © 2017 Asociación Argentina de Microbiología. Publicado por Elsevier España, S.L.U. All rights reserved.

Intra-Household Coping Mechanisms in Hard Times : the Added Worker Effect in the 2001 Argentine Economic Crisis

OpenAIRE

Martinoty , Laurine

2015-01-01

This paper shows that the added worker effect (AWE) plays an important role in coping against aggregate shocks, even in cases where the discouragement effect prevails at a macroeconomic scale. Using an Argentine panel dataset between 2000-2002, we instrument the endogenous variation in the labor market outcomes of household heads using the collapse of the Convertibility era as a natural experiment, and measure its causal impact on their spouses' labor supply decisions. Within this framework, ...

Argentine regulatory experience concerning radiation protection in industrial gammagraphy

International Nuclear Information System (INIS)

Ermacora, Marcela G.

2005-01-01

Industrial gammagraphy has always been responsible for the highest rates of radiological incidents in almost every part of the world. This is mainly due to the high activities of the radioactive sources used, which are constantly transported in the equipment that contains them between the storage and the areas of work, and is also due to workload pressures which may induce to negligence in following the operational procedures, if a strong Safety Culture does not exist. The purpose of this paper is to present the main aspects of the Argentine Regulations relating to radiation protection to control this practice and to contribute in this way to reduce the associated risks. In addition, some incidents occurred in Argentina during the latest years, the causes that led to those events and their relation to the in observance of the regulations in force, their consequences and the measures taken to repair them are described. Finally, the importance of the role that education and training has in the strengthening of Safety Culture, key element of all undertaking, is highlighted. (author) [es

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

Wolbachia are maternally inherited bacteria, which are very common in arthropods and nematodes. Wolbachia infection may affect host reproduction through feminisation, parthenogenesis, male-killing, cytoplasmic incompatibility and increased fecundity. Previous studies showing discrepancies between...... 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...... transmission of the symbiont may be important in ants as suggested by the sequence similarity of strains in the three genera Linepithema, Acromyrmex, and Solenopsis native from South and Central America....

An investigation of Commercial Off-the-Shelf Wireless in support of Complex Humanitarian Disaster Operations in the Argentine Army

OpenAIRE

Perfetti, Marcelo R.

2012-01-01

Approved for public release; distribution is unlimited Since the beginning of this century, the Argentine Army has used Commercial Off-The-Shelf (COTS) wireless products, equipment, and communication systems to support Humanitarian Assistance and Disaster Relief (HA/DR) operations. The participation of Military, Governmental, and Non-Governmental Organizations in these activities requires more wireless coverage area. These communication systems are an integration of several subsystems that...

RERTR progress in Mo-99 production from LEU

Energy Technology Data Exchange (ETDEWEB)

Vandegrift, G.F.; Conner, C.; Aase, S.; Bakel, A.; Bowers, D.; Freiberg, E.; Gelis, A.; Quigley, K.J.; Snelgrove, J.L. [Argonne National Laboratory 9700 S. Cass Avenue, Argonne, IL (United States)

2002-07-01

The ANL RERTR program is performing R and D supporting conversion of {sup 99}Mo production from HEU to LEU targets. Irradiation and processing of LEU targets were demonstrated at the Argentine Ezeiza Atomic Center. Target irradiation and disassembly were flawless, but the processing is not fully developed. In addition to preparing for, assisting in, and analyzing results of the demonstration, we performed other R and D related to LEU conversion: (1) designing a prototype production dissolver for digesting irradiated LEU foils in alkaline solutions and developing means to simplify digestion, (2) modifying ion-exchange columns used in the CNEA recovery and purification of {sup 99}Mo to deal with the lower volumes generated from LEU-foil digestion, (3) measuring the performance of new inorganic sorbents that outperform alumina for recovering Mo(VI) from nitric acid solutions containing high concentrations of uranium nitrate, and (4) developing means to facilitate the concentration and calcination of waste nitric-acid/LEU-nitrate solutions from {sup 99} Mo production. (author)

UO2: production based on two alternative lines

International Nuclear Information System (INIS)

Coppa, R.C.; Martin, H.R.

1987-01-01

The production of the uranium dioxide (UO 2 ) is carried out at the Cordoba factory, of the Argentine National Atomic Energy Commission, by the uranil carbonate method (AUC). The commercial uranium concentrates (yellow cake) is dissolved with HNO 3 and purificated with tributil phosphate (TBP). The pure uranium compound coming from the reextraction, is concentrated to 0.4 Kg U/l, then the precipitation with CO 2 and NH 3 gives the AUC crystalls. After conversion of AUC to UO 2 powder, the pellets are obtained by direct compacting. In the second experimental method used by CNEA, the yellow cake is dissolved with H 2 SO 4 , and then it is purified with a terciary amine and precipitated with (NH 4 ) 2 CO 3 . In this form the ammonium uranil tri-carbonate (AUT) crystals are obtained. The convertion to UO 2 is made under an atmosphere of dissociated NH 3 . (M.E.L.) [es

The effect of airborne particles and weather conditions on pediatric respiratory infections in Cordoba, Argentine

International Nuclear Information System (INIS)

Amarillo, Ana C.; Carreras, Hebe A.

2012-01-01

We studied the effect of estimated PM 10 on respiratory infections in children from Cordoba, Argentine as well as the influence of weather factors, socio-economic conditions and education. We analyzed upper and lower respiratory infections and applied a time-series analysis with a quasi-Poisson distribution link function. To control for seasonally varying factors we fitted cubic smoothing splines of date. We also examined community-specific parameters and differences in susceptibility by sex. We found a significant association between particles and respiratory infections. This relationship was affected by mean temperature, atmospheric pressure and wind speed. These effects were stronger in fall, winter and spring for upper respiratory infections while for lower respiratory infections the association was significant only during spring. Low socio-economic conditions and low education levels increased the risk of respiratory infections. These findings add useful information to understand the influence of airborne particles on children health in developing countries. - Highlights: ► Few information is available on children respiratory health from developing countries. ► We modeled the association between PM 10 and children's respiratory infections. ► We checked the influence of weather factors, socio-economic conditions, education and sex. ► Temperature, pressure and wind speed modified the effect of particles. ► Low socio-economic conditions and low education levels increased the risk of infections. - The concentration of airborne particles as well as low socio-economic conditions and low education levels are significant risk factors for upper and lower respiratory infections in children from Cordoba, Argentine.

Development of virtual bait stations to control Argentine ants (Hymenoptera: Formicidae) in environmentally sensitive habitats.

Science.gov (United States)

Choe, Dong-Hwan; Vetter, Richard S; Rust, Michael K

2010-10-01

A novel bait station referred to as a virtual bait station was developed and tested against field populations of the invasive Argentine ant, Linepithema humile (Mayr) (Hymenoptera: Formicidae), at White Beach, Camp Pendleton, in Oceanside, CA. White Beach is a nesting habitat for an endangered seabird, the California least tern (Sterna antillarum browni Mearns). The beach is heavily infested with Argentine ants, one of the threats for the California least tern chicks. Conventional pest control strategies are prohibited because of the existence of the protected bird species and the site's proximity to the ocean. The bait station consisted of a polyvinyl chloride pipe that was treated on the inside with fipronil insecticide at low concentrations to obtain delayed toxicity against ants. The pipe was provisioned with an inverted bottle of 25% sucrose solution, then capped, and buried in the sand. Foraging ants crossed the treated surface to consume the sucrose solution. The delayed toxicity of fipronil deposits allowed the ants to continue foraging on the sucrose solution and to interact with their nestmates, killing them within 3-5 d after exposure. Further modification of the bait station design minimized the accumulation of dead ants in the sucrose solution, significantly improving the longevity and efficacy of the bait station. The virtual bait station exploits the foraging behavior of the ants and provides a low impact approach to control ants in environmentally sensitive habitats. It excluded all insects except ants, required only milligram quantities of toxicant, and eliminated the problem of formulating toxicants into aqueous sugar baits.

Basis for the implementation of digital signature in Argentine's health environment

International Nuclear Information System (INIS)

Escobar, P P; Formica, M

2007-01-01

The growth of telemedical applications and electronic transactions in health environments is paced by the constant technology evolution. This implies a big cultural change in traditional medicine and in hospital information systems' users which arrival is delayed, basically, by the lack of solid laws and a well defined role-based infrastructure. The use of digital signature as a mean of identification, authentication, confidentiality and non-repudiation is the most suitable tool for assuring the electronic transactions and patient's data protection. The implementation of a Public Key Infrastructure (PKI) in health environment allows for authentication, encryption and use of digital signature for assuring confidentiality and control of the movement of sensitive information. This work defines the minimum technological, legal and procedural basis for a successful PKI implementation and establishes the roles for the different actors in the chain of confidence in the public health environment of Argentine

Progress Report. Argentine Atomic Energy Commission. March 1971

International Nuclear Information System (INIS)

1971-03-01

One of the irradiation tubes at the RA-3 Reactor, has been used to extract a 5mm collimated neutron beam for studies of the (n, γ) reaction. Gamma rays are detected with a Ge(Li) detector and Nal scintillator both in singles and coincidences, a target of Cr has been exposed to the beam and the γ-spec- tra analyzed with the purpose of determining the Ge(Li) detector efficiency in the high energy range. Several target elements have been studied; Nd, Y, T,i and As, and branching ratios have been measured. In the particular case of Ti the experiment was carried out in an attempt to establish the existence of low lying excited states due to core excitations. The results of this investigation are being analyzed and will be published in the near future. A set-up for nuclear spectroscopy studies of short-lived, fission-produced radioisotopes became operative at the Argentine AEC, in Buenos Aires, around the beginning of 1969. The system is of the ISOL type, consisting in a continuous production and mass separation of the nuclei, followed by detection of the emitted radiation by means of solid-state detectors coupled to appropriate analysing devices. (author)

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.

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.

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.

Communication of 31 March 2000 received from the Permanent Mission of the Argentine Republic to the International Atomic Energy Agency

International Nuclear Information System (INIS)

2000-01-01

The document reproduces the text of a letter dated 31 March 2000 from the Resident Representative of the Argentine Republic, including as attachment the declaration of the Advisory and Political Harmonisation Forum of MERCOSUR (Argentina, Brazil, Paraguay, Uruguay), Bolivia and Chile, issued on 27 March 2000, with regard to the 30th Anniversary of the entry into force of the Treaty on the Non-Proliferation of Nuclear Weapons

L’Argentine dans le contexte latino-américain : consommations alimentaires, santé et politiques nutritionnelles

OpenAIRE

Sebillotte, Clementina

2018-01-01

Le surpoids et l’obésité, problèmes nutritionnels planétaires, n’épargnent pas les populations des pays en développement. En Argentine, comme dans la majorité des pays d’Amérique latine et des Caraïbes, les problèmes de surcharge pondérale affectent plus de la moitié de la population adulte1 (FAO, OPS, OMS. 2017. 2016 América Latina y el Caribe. Panorama de la seguridad alimentaria y nutricional, Sistemas alimentarios sostenible para poner fin al hambre y a la malnutrición. Santiago de Chile ...

Public communication on times of environmental crisis. The opening of San Rafael 's uranium complex

International Nuclear Information System (INIS)

Calvino, Carlos; Cisneros, Martin

2008-01-01

Full text: Argentina has had a lot of cultural changes in the last few years. An environmental movement has gathered and is trying to stop the opening of the Sierra Pintada uranium complex, near the city of San Rafael, in the south of Mendoza province. Since 2005, several 'groundless information' have been published in the local media about the dangers of this re-opening. These news exaggerate the properties of radon gas, claiming that it will reach San Rafael city (20 miles from the complex), rising radiological risk among the population, etc. This scene shows a 'non-real' picture of the regulatory activities that the Nuclear Regulatory Authority (ARN), a government agency that regulates nuclear facilities in Argentina, is really and systematically accomplishing. In this situation, the board of Directors of ARN decided to entrust a full analysis of the environmental issue in the area. The Office of Press and Communication implemented a local communication plan, using a Strategic and Systemic tool kit. The period to be analyzed is from second semester 2005 to February 2007. A little bit of history: the San Rafael Complex started in September 20 of 1979. It belongs to the National Commission of Atomic Energy (CNEA), a government agency. Until its temporary suspension in 1995 for international market reasons (uranium price was U$S 10 / pound), almost 2 million tons of uranium were processed. Besides its temporary suspension, the ARN has been constantly monitoring this particular former complex. In the year 2001, CNEA notices that the uranium price starts to rise and entrust National Technology University, Avellaneda Branch, to accomplish an Environmental Impact Report, according to the argentine law 25.585. Due especially to the rising of uranium price, (actually, the uranium price is approximately U$S 200) the national government determined to restart the extraction of the mineral again. By the year 2004, with the results of the Environmental Impact report, CNEA

The agreement between the Argentine Republic and Australia on the cooperation for the peaceful uses of nuclear energy and its fitting to the Argentine Constitution

International Nuclear Information System (INIS)

Cigogna, Luis F. J.; De Antoni, Mario A.

2002-01-01

To analyze the legal aspects of the cooperation agreement between Australia and Argentina signed in Camberra on August 8, 2001, the authors elaborate upon the following points: 1. The interpretation of the constitutional texts. Its need; 2. Facts: the development of nuclear energy in Argentina. The contract INVAP-ANSTO. The cooperation agreement Argentina-Australia; 3. The great publicity campaign. The appeal to fear; 4. The difference with the case of power reactors. Distinction between power and research reactors; 5. The difference with the Chernobyl case; 6. Shipment safety; 7. Other clarifications; 8. Factual and juridical distinction between spent fuel and radioactive waste concepts; 9. The regulatory framework of the difference; 10. The essence of the adjective 'Immediate'. Its juridical meaning; 11. The concept of 'entry'. The need to overcome an intentional literalness; 12. The harmonious interpretation of the constitution; 13. The engagement with the future generations; 14. The adaptation to the global trends. The Kyoto protocol; 15. The bases of the constitutional doctrine. They conclude that nothing in the agreement is contrary to the Argentine constitution

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

OpenAIRE

Molares, Soledad; Ladio, Ana

2011-01-01

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 ...

Development of an immobilisation technique by cementation for non-radioactive simulated liquid waste, from Mo-99 production process

International Nuclear Information System (INIS)

Arva, E A; Marabini, S G; Varani, J L

2012-01-01

The Argentine Atomic Energy Commission (CNEA) is the responsible for developing a management nuclear waste disposal programme. This programme contemplates the strictly environmental safe and efficient management of the radioactive waste from different sources. Since 1985, CNEA has been producing commercially Mo-99 for medical use. In this process two types of liquid waste are produced. One of them has high alkaline (NaOH 3,5M) and aluminate contents. Since Mo-99 production started, such liquid waste was stored in specially designed containers during production, and after a decay period in smaller containers in interim storage conditions. As this waste is still a liquid, development of an immobilisation technique is required. Immobilisation of radioactive liquid waste by cementation is a frequently used technique, and will be studied in the present work using Mo-99 non-radioactive simulated liquid waste. In this second stage, a full scale (200 liters drum) cementation test using simulated non radioactive waste was carried out. Such test included: using the BEBA 201 mixing machine - the same that will be used with real waste in the future for 'tuning up' the process, construction of a specially designed temperature sensor for measuring the maximum temperature value (five different positions, four inside the drum and one outside) and the time elapsed after all components mixing. Finally, standard specimens (IRAM 1622) were made for mechanical resistance tests after cement setting at 28 days. The results show values of temperature not above 40 o C with the maximum at 12 hours before component mixing and compression strength of 14 MPa. Such values are compatible for a waste immobilisation process by cementation (author)

Spatial patterns of copepod biodiversity in relation to a tidal front system in the main spawning and nursery area of the Argentine hake Merluccius hubbsi

Science.gov (United States)

Temperoni, B.; Viñas, M. D.; Martos, P.; Marrari, M.

2014-11-01

Copepods play an important role in marine ecosystems as a direct link of energy transfer between primary producers and higher trophic level consumers, such as fish. In the Argentine Sea, the Patagonian stock of Argentine hake Merluccius hubbsi spawns from late austral spring (December) to early autumn (April) in the northern Patagonian shelf region (43°-45°30‧S), in association with a highly productive tidal front system. Since hake larvae prey mainly upon copepods, the objective of this study was to assess the spatial variability in the abundance and diversity of these potential food items in different sectors of the front, as one of the possible factors affecting hake recruitment success. Two complementary mesh sizes (67 and 300 μm) were used to accurately target the entire copepod size spectrum. The copepod community was dominated by developmental stages sustain M. hubbsi larval growth resulting from high availability of adequate prey, the suitable thermal ranges, and the existence of retention mechanisms.

Transport of Cobalt 60 from the Argentine Nuclear Power Plant in Embalse

International Nuclear Information System (INIS)

Lopez Vietri, J.R.

2011-01-01

Full text: The purpose of this presentation is to point out some relevant issues related to the transport of cobalt 60 for domestic uses and export from the Argentine Nuclear Power Plant located in Embalse (ENPP). It is remarked that in last 22 years, ENPP produced about 2600 PBq (70 MCi) of Co-60, and that Argentina is the third Co-60 producer, after Canada and Russia. It is mentioned that in Argentina there are facilities which manufacture Zircaloy seamless tubes and reactivity control bars containing cobalt 59 to be used in ENPP, the operation of Candu reactor at ENPP including cobalt-related activities, and the manufacture and commercialization of Co-60 sealed sources. The Argentine Nuclear Regulatory Authority verifies the compliance of nuclear activities with regulatory standards, including those related to the transport of radioactive material. Then, it is described the process for obtaining Co-60 at ENPP with an activity concentration to allow its use in medicine and industry. After that, is considered in detail the type of package used for the transport of Co-60 from ENPP: it is to say, Type B(U) package designs that must be approved by the Competent Authority origin of the design, and they are able to withstand routine, normal and accident conditions of transport, including severe impacts, fires and immersion in water. The overall dimensions of packages are about 1.0 m to 1.5 m diameter by 1.2 m to 1.8 m high, as well as the gross mass could vary from 6500 kg to 9500 kg. Radioactive contents consist of Co-60 sealed sources (called pencils), with an activity range from 8 PBq to 16 PBq. Then, it is considered activities prior to dispatch of Type B(U) packages at ENPP, including the preparation of radioactive contents, packaging and package (labelling and marking) as well as necessary tests and documentation for transport in order to fulfil pertinent requirements of package design operation manual of the package and related standards. Finally, it is pointed

Chemical quality of different argentine honey varieties, irradiated to control american foulbrood

International Nuclear Information System (INIS)

Zunich, C.D.; Markowski, I.; Narvaiz, Patricia

2011-01-01

'American foulbrood' is a disease that seriously affects bees. Honey may be contaminated with spores of the related bacteria, Paenibacillus larvae larvae, which is a great drawback for trade. The scientific literature reports that these spores, resistant to heat and chemicals, are inactivated in honey when it is irradiated al 10 kGy, being this treatment mandatory in the Republic of Southafrica. Irradiated food wholesomeness is endorsed by the World Health Organization. Considering that Argentina is an important honey producer and exporter, the aim of this work was to evaluate the effect of ionizing radiation on some of its commercial chemical parameters along storage time. Honeys with different characteristics, coming from five different regions of the country: Middle, Patagonia, North, Litoral, Humid Pampa, were provided by producers from a commission called 'Packaged honey' of the National Food, Fishery and Agriculture Ministry. Fifteen kg of each honey variety were packaged in 500 g polypropylene recipes with polyethylene lids, and irradiated at the semi industrial cobalt-60 facility of the Ezeiza Atomic Center, 500,000 Ci of activity, with doses of 0, 10 and 20 kilo Grays. Control and irradiated samples were stored at room temperature for 10 months. Some standardized chemical analysis required by the Argentine Food Code (AFC) were performed on the first, fourth and tenth storage months: water content, acidity, diastase content, reducing sugars, and hydroxymethylfurfural. Reducing sugars and diastase activity slightly diminished, and acidity slightly increased, along storage which is typical in this product; no significant differences were found between control and irradiated samples. Hydroxymethylfurfural values, related to aging or thermal abuse, diminished slightly though significantly due to irradiation, which would not affect the product quality as regulations require not to surpass a maximum value, 40 mg/kg in the AFC. So ionizing

By their own devices: invasive Argentine ants have shifted diet without clear aid from symbiotic microbes.

Science.gov (United States)

Hu, Yi; Holway, David A; Łukasik, Piotr; Chau, Linh; Kay, Adam D; LeBrun, Edward G; Miller, Katie A; Sanders, Jon G; Suarez, Andrew V; Russell, Jacob A

2017-03-01

The functions and compositions of symbiotic bacterial communities often correlate with host ecology. Yet cause-effect relationships and the order of symbiont vs. host change remain unclear in the face of ancient symbioses and conserved host ecology. Several groups of ants exemplify this challenge, as their low-nitrogen diets and specialized symbioses appear conserved and ancient. To address whether nitrogen-provisioning symbionts might be important in the early stages of ant trophic shifts, we studied bacteria from the Argentine ant, Linepithema humile - an invasive species that has transitioned towards greater consumption of sugar-rich, nitrogen-poor foods in parts of its introduced range. Bacteria were present at low densities in most L. humile workers, and among those yielding quality 16S rRNA amplicon sequencing data, we found just three symbionts to be common and dominant. Two, a Lactobacillus and an Acetobacteraceae species, were shared between native and introduced populations. The other, a Rickettsia, was found only in two introduced supercolonies. Across an eight-year period of trophic reduction in one introduced population, we found no change in symbionts, arguing against a relationship between natural dietary change and microbiome composition. Overall, our findings thus argue against major changes in symbiotic bacteria in association with the invasion and trophic shift of L. humile. In addition, genome content from close relatives of the identified symbionts suggests that just one can synthesize most essential amino acids; this bacterium was only modestly abundant in introduced populations, providing little support for a major role of nitrogen-provisioning symbioses in Argentine ant's dietary shift. © 2016 John Wiley & Sons Ltd.

Food irradiation 2009

International Nuclear Information System (INIS)

Narvaiz, Patricia

2009-01-01

Food irradiation principles; its main applications, advantages and limitations; wholesomeness, present activities at Ezeiza Atomic Centre; research coordinated by the International Atomic Energy Agency; capacity building; and some aspects on national and international regulations, standards and commercialization are briefly described. At present 56 countries authorize the consumption of varied irradiated foods; trade is performed in 32 countries, with about 200 irradiation facilities. Argentina pioneered nuclear energy knowledge and applications in Latin America, food irradiation included. A steady growth of food industrial volumes treated in two gamma facilities can be observed. Food industry and producers show interest towards new facilities construction. However, a 15 years standstill in incorporating new approvals in the Argentine Alimentary Code, in spite of consecutive request performed either by CNEA or some food industries restricts, a wider industrial implementation, which constitute a drawback to future regional commercialization in areas such as MERCOSUR, where Brazil since 2000 freely authorize food irradiation. Besides, important chances in international trade with developed countries will be missed, like the high fresh fruits and vegetables requirements United States has in counter-season, leading to convenient sale prices. The Argentine food irradiation facilities have been designed and built in the country. Argentina produces Cobalt-60. These capacities, unusual in the world and particularly in Latin America, should be protected and enhanced. Being the irradiation facilities scarce and concentrated nearby Buenos Aires city, the possibilities of commercial application and even research and development are strongly limited for most of the country regions. (author) [es

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.

Expected role of psychologists in rural extension in the Argentine Northeast

Directory of Open Access Journals (Sweden)

Fernando Pablo Landini

2017-05-01

Full Text Available Rural extension is a complex practice that involves the provision of technical assistance and advisory services to farmers and other rural actors with the aim of improving agricultural production as well as organizational and commercial dynamics. Thus, it is clear that rural extension as an interdisciplinary practice that requires contributions from different social sciences. In consequence, it can be argued that psycholog y has a great potential to contribute to rural extension. Nonetheless, it has been mentioned that its contributions to the topic have been scarce. Aiming to understand the potential role of psychologists in the context of rural extension, a qualitative, exploratory-descriptive research was conducted. A total of 40 extensionists from the Argentine northeast provinces were interviewed. Interviews were recorded and latter analyzed following grounded theory’s guidelines and using Atlas Ti software. The findings allow concluding that most rural extensionists consider that psycholog y could contribute to their practice, but without being able to clarify its specificities. Additionally, exten-sionists highlight potential contributions in the area of group dynamics, conflict management and the understanding of farmers’ behavior.

EL ENSAYO ARGENTINO COMO POLÍTICA CULTURAL Y REMEMORACIÓN CRÍTICA DE LA MODERNIDAD / THE ARGENTINE ESSAY AS CULTURAL POLICY AND CRITICAL REMINISCENCE OF MODERNITY

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Mariano Yedro

2016-06-01

Full Text Available Este texto busca dar cuenta de algunas ideas en torno al ensayo el caso particular de Nicolás Casullo, figura intelectual relevante del ensayismo del medio cultural argentino en las últimas décadas. Particularmente en su método de rememoración, esto es la crítica esbozada contra lógicas neoliberales apelando a saberes de la historia moderna. El texto tiene tres partes: la primera aborda, sucintamente, algunas ideas sobre el ensayo que aparecen en el medio intelectual argentino en el siglo XX. La segunda atiende al género del ensayo en la perspectiva de Casullo. Finalmente, tomando la figura del autor nos centraremos en su crítica al neoliberalismo desde la rememoración de la historia moderna. / This paper explores some ideas about the essay seen as cultural policy of resistance and transformation that in the Argentine intellectual scene operated in the form of criticism towards certain logics unfolded during the years of neoliberalism. We focus on the particular case of Nicolás Casullo, a relevant intellectual figure of essayism in the Argentine cultural scenario in the last decades. Particularly, in his method of reminiscence there is a criticism against neoliberal logics referring to instances of knowledge from modern history. The article is organized into three parts: the first one examines some ideas on the essay in the Argentine intellectual scene in the Twentieth Century. The second one deals with the genre of the essay from the perspective of Casullo. Finally, taking the figure of the author into account we concentrate on his critique towards neoliberalism from the reminiscence of modern history.

Co-operation agreement. The text of the agreement of 25 May 1998 between the International Atomic Energy Agency and the Brazilian-Argentine Agency for accounting and control of nuclear materials

International Nuclear Information System (INIS)

1998-01-01

The document reproduces the text of the Co-operation Agreement between the International Atomic Energy Agency and the Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials which entered into force on 25 May 1998

Co-operation agreement. The text of the agreement of 25 May 1998 between the International Atomic Energy Agency and the Brazilian-Argentine Agency for accounting and control of nuclear materials

Energy Technology Data Exchange (ETDEWEB)

NONE

1998-06-25

The document reproduces the text of the Co-operation Agreement between the International Atomic Energy Agency and the Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials which entered into force on 25 May 1998

Anomalous variations of NmF2 over the Argentine Islands: a statistical study

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A. V. Pavlov

2009-04-01

Full Text Available We present a statistical study of variations in the F2-layer peak electron density, NmF2, and altitude, hmF2, over the Argentine Islands ionosonde. The critical frequencies, foF2, and, foE, of the F2 and E-layers, and the propagation factor, M(3000F2, measured by the ionosonde during the 1957–1959 and 1962–1995 time periods were used in the statistical analysis to determine the values of NmF2 and hmF2. The probabilities to observe maximum and minimum values of NmF2 and hmF2 in a diurnal variation of the electron density are calculated. Our study shows that the main part of the maximum diurnal values of NmF2 is observed in a time sector close to midnight in November, December, January, and February exhibiting the anomalous diurnal variations of NmF2. Another anomalous feature of the diurnal variations of NmF2 exhibited during November, December, and January when the minimum diurnal value of NmF2 is mainly located close to the noon sector. These anomalous diurnal variations of NmF2 are found to be during both geomagnetically quiet and disturbed conditions. Anomalous features are not found in the diurnal variations of hmF2. The statistical study of the NmF2 winter anomaly phenomena over the Argentine Islands ionosonde was carried out. The variations in a maximum daytime value, R, of a ratio of a geomagnetically quiet daytime winter NmF2 to a geomagnetically quiet daytime summer NmF2 taken at a given UT and for approximately the same level of solar activity were studied. The conditional probability of the occurrence of R in an interval of R, the most frequent value of R, the mean expected value of R, and the conditional probability to observe the F2-region winter anomaly during a daytime period were calculated for low, moderate, and high solar activity. The calculations show that the mean expected value of R and the occurrence frequency of the F2-region winter anomaly increase with increasing solar activity.

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

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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.

[Argentine migration policy and movements of the European population (1876-1925)].

Science.gov (United States)

Devoto, F J

1989-04-01

This work examines changes in Argentine migration policy from 1876-1925 and the relationship between public policy and population movements. Promoting immigration from Europe as proposed in article 25 of the Argentine constitution of 1853 was 1 of the most enduring objectives of Argentina's leadership. When Law of Immigration and Colonization (Law 817) was passed by the Chamber of Senators in 1876, the flow of immigration was at its lowest point in 8 years. Many of the provisions of Law 817 had already been put into practice occasionally or systematically, but the intent to use the law to attract a far greater number of immigrants and to select qualities seen as desirable were novel elements and the principal motives of the legislation. The unstated aim of reducing the preponderance of Italian immigration from about 2/3 was not immediately achieved. Argentina's immigration policy and actions were in competition with those of other Latin American countries and with the US. Information offices for prospective immigrants were opened in the 1880s in Paris, London, Brussels, Berlin, Vienna, Bern, and New York, and in 1887 legislation was passed permitting subsidized passages on a large scale. The continued predominance of Italian immigration demonstrated the limits of government policy influence, even when large sums of money were invested. The informal network of Italian immigrants already in Argentina and the activities of interested shipping companies on the other hand played major roles in maintaining Italian immigration. The total number of immigrants and the diversity of national origins were increased by the subsidized passages, but in 1891 the combination of a financial crisis and an end to subsidized passages decisively reduced the total flow. Changes occurred in the 1890s in regional flows within countries and in the occupational composition of immigrants from agricultors to day laborers, unskilled workers, and artisans. By about 1910 the conservative elements

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)

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.

Insecticide transfer efficiency and lethal load in Argentine ants

International Nuclear Information System (INIS)

Hooper-Bui, L.M.; Kwok, E.S.C.; Buchholz, B.A.; Rust, M.K.; Eastmond, D.A.; Vogel, J.S.

2015-01-01

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 14 C-sucrose, 14 C-hydramethylnon, and 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.

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

OpenAIRE

Belén AMADEO; Natalia ARUGUETE

2013-01-01

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 a...

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)

Radioactive wastes. Rules governing the management. Modification of Decree No. 1.540/94 (Sanctioned 23-Sep-1998, Passed 19-Oct-1998; B.O. 23-Oct-1998)

International Nuclear Information System (INIS)

1998-01-01

This law establishes for the Argentine Republic, the fundamental instruments for an adequate management of radioactive wastes, which guarantee the protection of environment, public health, and the rights of the future generations. The National State, through its National Atomic Energy Commission (CNEA), is the application authority of this law, and will have to coordinate with the provinces or the city of Buenos Aires everything related to its implementation. Also, it shall have to comply with regulatory rules referring to radiological and nuclear safety, physical and environmental protection and international safeguards set forth by the Nuclear Regulatory Authority (ARN). The generators of radioactive waste shall have to provide the necessary resources for its management and shall be responsible for the safe conditioning and storage of the waste generated by the facility operated by them, according to the conditions established by the application authority, until its transfer to the National Atomic Energy Commission. CNEA shall elaborate a Strategic Plan for Radioactive Waste Management that will include the National Programme for Radioactive Waste Management. Through this programme it shall have to: manage radioactive wastes; propose, coordinate and control research projects; promote studies for the establishment of repositories and on safety and preservation of the environment; establish procedures; implement an information and recording system of relevant documentation; inform the community; exercise the responsibility over the repositories; act in case of nuclear emergency; carry out technical and financial studies; etc. Besides, the Fund for the Management and Final Disposal of Radioactive Waste is created, with the finality of financing the above mentioned Programme. Also, it will submit annually to the National Congress a report of the activities performed, of the progress of the Strategic Plan and of its updating if necessary

Communication received from the permanent mission of the Argentine Republic regarding guidelines for the export of nuclear material, equipment and technology

International Nuclear Information System (INIS)

1994-11-01

On 11 May 1994, the Director General received a note verbale from the Permanent Mission of Argentina to the International Atomic Energy Agency relating to the export of nuclear material, equipment and technology. The purpose of this note verbale is to provide further information on the nuclear export policies and practices of the Government of the Argentine Republic. In the light of the wish expressed at the end of the note verbale, the text of the note verbale is annexed hereto

Communication received from the permanent mission of the Argentine Republic regarding guidelines for the export of nuclear material, equipment and technology

International Nuclear Information System (INIS)

1994-11-01

On 11 May 1994, the Director General received a note verbale from the Permanent Mission of Argentina to the International Atomic Energy Agency relating to the export of nuclear material, equipment and technology. The purpose of this note verbale is to provide further information on nuclear export policies and practices of the Government of the Argentine Republic. In the light of the wish expressed at the end of the note verbale, the text of the note verbale is annexed hereto

The rights of the dying: the refusal of medical treatments in Argentine courts

Directory of Open Access Journals (Sweden)

Juan Pedro Alonso

2016-10-01

Full Text Available This paper addresses the judicialization of end of life medical decision-making, as part of the advance of the justice system in the regulation of medical practice and the rise of recognition of patient autonomy. The article analyzes, from a sociological standpoint, legal decisions regarding treatment refusal at the end of life produced by the Argentine courts between 1975 and 2015. Based on a qualitative design, 38 sentences collected from jurisprudential databases using key terms were analyzed. First, judicialized cases during the period are described; these are characterized by a high proportion of claims presented by health institutions, a pro-treatment bias in the legal actions requested, and a high percentage of unnecessary litigation in the absence of conflicts or in situations that do not require court intervention. Second, legal and extralegal factors affecting the justiciability of decisions to refuse or withdraw medical treatments, such as changes in the law and processes of politicization of claims, are analyzed.

A Microsatellite-Based Analysis of House Infestation With Triatoma Infestans (Hemiptera: Reduviidae) After Insecticide Spraying in the Argentine Chaco.

Science.gov (United States)

Piccinali, Romina V; Gaunt, Michael W; Gürtler, Ricardo E

2018-05-04

Prevention of vector-borne transmission of Chagas disease mainly relies on residual insecticide spraying. Despite significant success at a regional scale, house infestation with Triatoma infestans (Klug) (Hemiptera: Reduviidae) still persists in the Gran Chaco ecoregion. One key aspect is the identification of the sources of reinfestant triatomines. After detecting fine-scale genetic structure in two rural villages of Pampa del Indio, Argentine Chaco, we tested hypotheses on the putative origins of the triatomines collected at 4, 8, and 12 mo after insecticide house spraying. We genotyped 10 microsatellite loci in 262 baseline and 83 postspraying triatomines from different houses. Genetic variability was similar between baseline and postspraying populations, but 13 low-frequency alleles were not detected at postspraying. FSTs were not significant between insects collected before and after insecticide spraying at the same house in all but one case, and they clustered together in a neighbor-joining tree. A clustering algorithm detected seven genetic groups, four of them mainly composed of baseline and postspraying insects from the same house. Assignment tests suggested multiple putative sources (including the house of collection) for most postspraying insects but excluded a house located more than 9 km from the study area. The origin of three triatomines was attributed to immigration from other unaccounted sources. Our study is compatible with the hypothesis that house reinfestations in the Argentine Chaco are mostly related to residual foci (i.e., survival of insects within the same community), in agreement with field observations, spatial analysis, and morphometric studies previously published.

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

Argentine adaptation of the Quality of Life Indicators guide for organizations that support people with autistic spectrum disorders.

Science.gov (United States)

Cuesta Gómez, José L; Manzone, Luisa A

2018-04-01

This article describes the adaptation process of the Quality of Life Indicators guide for organizations that support people with autistic spectrum disorders which has taken place in Argentina (Cuesta, J. L., 2009) using the Delphi method, and with the participation of a group of autism-related experts from different fields and domestic institutions. The result is an instrument based on a quality-of-life model which is adjusted to the Argentine setting, helps planning and assessing centers and programs for people with autistic spectrum disorders, and responds to the increasing number of specific services which cover the needs of this population. Sociedad Argentina de Pediatría.

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

Annual report and balance 2006; Memoria y balance 2006

Energy Technology Data Exchange (ETDEWEB)

NONE

2007-07-01

A summary of the research, development, services and production activities of the National Atomic Energy Commission (CNEA) of Argentina is given as well as details of management resources together with the evolution of the budget. The activities of the CNEA related companies during 2006 are also outlined. A special mention is made of the activities of the three CNEA educational and training institutes.

Annual report and balance 2006

International Nuclear Information System (INIS)

2007-01-01

A summary of the research, development, services and production activities of the National Atomic Energy Commission (CNEA) of Argentina is given as well as details of management resources together with the evolution of the budget. The activities of the CNEA related companies during 2006 are also outlined. A special mention is made of the activities of the three CNEA educational and training institutes

Annual report and balance 2005; Memoria y balance 2005

Energy Technology Data Exchange (ETDEWEB)

NONE

2006-07-01

A summary of the research, development, services and production activities of the National Atomic Energy Commission (CNEA) of Argentina is given as well as details of management resources together with the evolution of the budget. The activities of the CNEA related companies during 2005 are also outlined. A special mention is made of the activities of the three CNEA educational and training institutes.

Annual report and balance 2002

International Nuclear Information System (INIS)

2003-01-01

A summary of the research, development, services and production activities of the National Atomic Energy Commission (CNEA) of Argentina is given as well as details of management resources together with the evolution of the budget. The activities of the CNEA related companies during 2002 are also outlined. A special mention is made of the activities of the three CNEA educational and training institutes

Annual report and balance 2001

International Nuclear Information System (INIS)

2002-01-01

A summary of the research, development, services and production activities of the National Atomic Energy Commission (CNEA) of Argentina is given as well as details of management resources together with the evolution of the budget. The activities of the CNEA related companies during 2001 are also outlined. A special mention is made of the activities of the three CNEA educational and training institutes

Annual report and balance 2007

International Nuclear Information System (INIS)

2008-01-01

A summary of the research, development, services and production activities of the National Atomic Energy Commission (CNEA) of Argentina is given as well as details of management resources together with the evolution of the budget. The activities of the CNEA related companies during 2007 are also outlined. A special mention is made of the activities of the three CNEA educational and training institutes

Annual report and balance 2007; Memoria y balance 2007

Energy Technology Data Exchange (ETDEWEB)

NONE

2008-07-01

A summary of the research, development, services and production activities of the National Atomic Energy Commission (CNEA) of Argentina is given as well as details of management resources together with the evolution of the budget. The activities of the CNEA related companies during 2007 are also outlined. A special mention is made of the activities of the three CNEA educational and training institutes.

Annual report and balance 2001; Memoria y balance 2001

Energy Technology Data Exchange (ETDEWEB)

NONE

2002-07-01

A summary of the research, development, services and production activities of the National Atomic Energy Commission (CNEA) of Argentina is given as well as details of management resources together with the evolution of the budget. The activities of the CNEA related companies during 2001 are also outlined. A special mention is made of the activities of the three CNEA educational and training institutes.

Annual report and balance 2002; Memoria y balance 2002

Energy Technology Data Exchange (ETDEWEB)

NONE

2003-07-01

A summary of the research, development, services and production activities of the National Atomic Energy Commission (CNEA) of Argentina is given as well as details of management resources together with the evolution of the budget. The activities of the CNEA related companies during 2002 are also outlined. A special mention is made of the activities of the three CNEA educational and training institutes.

Annual report and balance 2004

International Nuclear Information System (INIS)

2005-01-01

A summary of the research, development, services and production activities of the National Atomic Energy Commission (CNEA) of Argentina is given as well as details of management resources together with the evolution of the budget. The activities of the CNEA related companies during 2004 are also outlined. A special mention is made of the activities of the three CNEA educational and training institutes

Annual report and balance 2005

International Nuclear Information System (INIS)

2006-01-01

A summary of the research, development, services and production activities of the National Atomic Energy Commission (CNEA) of Argentina is given as well as details of management resources together with the evolution of the budget. The activities of the CNEA related companies during 2005 are also outlined. A special mention is made of the activities of the three CNEA educational and training institutes

Annual report and balance 2004; Memoria y balance 2004

Energy Technology Data Exchange (ETDEWEB)

NONE

2005-07-01

A summary of the research, development, services and production activities of the National Atomic Energy Commission (CNEA) of Argentina is given as well as details of management resources together with the evolution of the budget. The activities of the CNEA related companies during 2004 are also outlined. A special mention is made of the activities of the three CNEA educational and training institutes.

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

Directory of Open Access Journals (Sweden)

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

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.

Potentialities for the diversification of the energy matrix of the National Center for Applied Electromagnetism

International Nuclear Information System (INIS)

Berenguer Ungaro, Mónica Rosario; Yero, Douglas Deás; López Juanes, Pedro; Areas Gilar, Ramón; Prada Sánchez, Jorge; Hernández Rodríguez, Norma Rafaela

2017-01-01

The objective of this work is to evaluate the potential for the diversification of the energy matrix of the National Center for Applied Electromagnetism, CNEA. This evaluation were realize through Three steps . In the first step, were determinated the demand for electricity from the CNEA, the electric bill were the source of information. In the second step, were identified the possible locations, for instalation of the solar panels.the third step, were calculated what percentage of the demand for electrical energy the CNEA that could be covered by the generation with this photovoltaic panels . As a result, five possible locations were identified, all on the CNEA roof. With the proposition we can cover between a 35 and 78% of the demand of CNEA electrical energy. It was recommended to continue with the technical-economic study in order to present a project for the search of the financing. (author)

Co-operation Agreement. The Text of the Agreement of 25 May 1998 between the International Atomic Energy Agency and the Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials

International Nuclear Information System (INIS)

1998-01-01

The text of the Co-operation Agreement between the International Atomic Energy Agency and the Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials is reproduced herein for the information of all Members. The Agreement entered into force on 25 May 1998, pursuant to Article 8 [fr

Co-operation Agreement. The Text of the Agreement of 25 May 1998 between the International Atomic Energy Agency and the Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials

International Nuclear Information System (INIS)

1998-01-01

The text of the Co-operation Agreement between the International Atomic Energy Agency and the Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials is reproduced herein for the information of all Members. The Agreement entered into force on 25 May 1998, pursuant to Article 8 [es

Role of a national system of accounting and control of nuclear material under ABACC's (Brazilian-Argentine Agency) regional system

International Nuclear Information System (INIS)

Fernandez Moreno, Sonia; Estrada Oyuela, Miguel E.

2000-01-01

The Brazilian-Argentine Agency (ABACC) and the 'Common System of Accounting and Control of Nuclear Materials' (SCCC) are the result of a process started with nuclear cooperation between Argentina and Brazil. The SCCC reflects a common policy of transparency established by a Bilateral Agreement. Its insertion in the global context was made through a Quadripartite Agreement (Argentina, Brazil, ABBAC, IAEA). This paper describes the role of the State System of Accounting and Control (SSAC) in the framework established in the Bilateral and the Quadripartite Safeguards Agreements and in the context of new trends and perspectives in international safeguards. It could also serve as a example for initiatives in other regions. (author)

Impact of Gene rs7422339 Polymorphism in Argentine Patients With Hyperhomocysteinemia

Directory of Open Access Journals (Sweden)

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.

Moessbauer and magnetic studies of parent material from argentine pampas soils

International Nuclear Information System (INIS)

Bidegain, J. C.; Bartel, A. A.; Sives, F. R.; Mercader, R. C.

2007-01-01

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 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 o W) to the more humid east (at around 59 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 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.

Potential biocontrol actinobacteria: Rhizospheric isolates from the Argentine Pampas lowlands legumes.

Science.gov (United States)

Solans, Mariana; Scervino, Jose Martin; Messuti, María Inés; Vobis, Gernot; Wall, Luis Gabriel

2016-11-01

Control of fungal plant diseases by using naturally occurring non-pathogenic microorganisms represents a promising approach to biocontrol agents. This study reports the isolation, characterization, and fungal antagonistic activity of actinobacteria from forage soils in the Flooding Pampa, Argentina. A total of 32 saprophytic strains of actinobacteria were obtained by different isolation methods from rhizospheric soil of Lotus tenuis growing in the Salado River Basin. Based on physiological traits, eight isolates were selected for their biocontrol-related activities such as production of lytic extracellular enzymes, siderophores, hydrogen cyanide (HCN), and antagonistic activity against Cercospora sojina, Macrophomia phaseolina, Phomopsis sp., Fusarium oxysporum, and Fusarium verticilloides. These actinobacteria strains were characterized morphologically, physiologically, and identified by using molecular techniques. The characterization of biocontrol-related activities in vitro showed positive results for exoprotease, phospholipase, fungal growth inhibition, and siderophore production. However, none of the strains was positive for the production of hydrogen cyanide (HCN). Streptomyces sp. MM140 presented the highest index for biocontrol, and appear to be promising pathogenic fungi biocontrol agents. These results show the potential capacity of actinobacteria isolated from forage soils in the Argentine Pampas lowlands as promising biocontrol agents, and their future agronomic applications. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Implementation of a quality assurance system for the design and manufacturing of fuel assembly MTR-plate type

International Nuclear Information System (INIS)

Koll, J.H.

1987-01-01

Since more than 30 years ago, fuel assemblies (FA) of the MTR-Plate type, for research reactors, have been developed and produced using well known technologies, with different methods for the design, manufacturing, quality control and subsequent verification of FA behaviour, as well as of the design data. The FA and its reliability has been improved through the recycling of the obtained information. No nuclear accidents or major incidents have taken place that can be blamed to FA due to design, manufacturing or its use. Since the 70's, the use of Quality Assurance methodology has been increased, especially for Nuclear Power Plants, in order to ensure safety for these reactors. The use of QA for reactors for research, testing or other uses, has also been steadily increased, not only due to safety reasons, but also because of its convenience for a good operation, being presently a common requirement of the operator of the installation. Herewith is described the way the QA system that has been developed for the design, manufacturing, quality control and supply of MTR-plate type FA, at the Development Section of the Argentine Atomic Energy Commission (CNEA). (Author)

Images and symbols of nuclear energy and environment in Argentine public opinion: the need of a new strategy

International Nuclear Information System (INIS)

Chahab, Martin

2006-01-01

The need to create in the Argentine public opinion new positives symbols and images on nuclear energy and on the benefits of its peaceful applications, is al present so important as the development of new technical tools to improve the nuclear industry. These positives symbols and imagines on nuclear energy must be created in the framework of a joint strategy of all the country's nuclear institutions as well as other public organizations, in view of the new nuclear plan recently announced. This joint strategy will permit to create not only the new positives symbols and images in the public opinion, but also to obtain the support of the mass media and new spaces for negotiation in the national, provincial and municipal levels. (author) [es

X-ray photoelectron spectroscopy on 1-peso and 2-pesos of the Argentine Republic

Science.gov (United States)

Gard, Faramarz S.; Duffo, Gustavo; Bergamasco, Pablo; Forlerer, Elena

2018-04-01

Relative concentrations of nickel and copper at the surface of the ring and centre parts of 1-peso and 2-pesos Argentine coins have been studied by means of X-ray photoemission spectroscopy (XPS). It has been observed Ni-enrichment at the surface of the ring (silvery) part of a 1-peso, minted in 1994, whereas the XPS data reveals lack of nickel at the surface of the centre (silvery) part of a 2-pesos, minted in 2016. This discrepancy is explained by analyzing the XPS peaks of oxygen and carbon, and is suggested to be related to the contamination layer on the surface of the coins. The XPS analysis of the golden parts of the coins, namely the centre part of the 1-peso and the ring part of the 2-pesos coins were inconclusive, due to the small amount of the Ni (nominally %2) used in those parts. The possible oxidations states of the metals at the surface of the untreated and treated coins with the artificial human sweat were also identified.

Reflections on the development of local suppliers for the Argentine nuclear industry

International Nuclear Information System (INIS)

Quilici, Domingo F.

2008-01-01

Argentina has given recently a new start to its nuclear power activities. Looking for background and experiences that can be useful under the new reality, the paper is a survey of the past development of local suppliers for the national nuclear industry. Based on the intention to answer the questions: Why so early it was decided to build a nuclear power plant? Why it was decided to buy it under a turnkey basis rather than developing an indigenous design? and what was the meaning of the 'opening of the technology package' at that time?, the paper describes the actions that led to the purchase of the Atucha I, Embalse and Atucha II nuclear power plants and how these decisions were implemented in order to maximize local participation and the technology transfer. It also analyzes the influence of the Argentine Nuclear Plan of the late seventies on the development of endogenous technology and describes the facts that helped to preserve until now the technological nuclear capabilities of the country in spite of the stopping of the Atucha II construction, and to create positive expectations regarding the revival of the local industry as a supplier of nuclear goods and services. (author) [es

Distinctive Innovation Capabilities of Argentine Software Companies with High Innovation Results and Impacts

Directory of Open Access Journals (Sweden)

María Isabel Camio

2018-04-01

Full Text Available The software sector is of growing importance and, due to its degree of dynamism, the identification of capabilities for innovation is vital. This study identifies capabilities variables that distinguish Argentine software companies with high innovation results and high innovation impacts from those with lesser results and impacts. It is applied to a sample of 103 companies, a measurement model and the component variables of an innovation degree index for software companies (INIs formulated in previous studies. A Principal Component Analysis and a biplot are conducted. In the analysis of results and impacts, 100% of the variability within the first two components is explained, which shows the high correlation between variables. From the biplots, it appears that companies with high results have higher degrees in the variables of motivation, strategy, leadership and internal determinants; and those with high impacts present higher degrees of structure, strategy, leadership, free software and innovation activities. The findings add elements to the theory of capabilities for innovation in the software sector and allow us to consider the relative importance of different capabilities variables in the generation of innovation results and impacts.

Memories and identities redefinitions around the independence process in Cape Verde. The case of the Argentine-Cape Verdeans from Buenos Aires

Directory of Open Access Journals (Sweden)

Maria Cecilia Martino

2017-12-01

Full Text Available The article analyzes, from an ethnographic and historical perspective, the relations between memory, identity and Afro-descendant political activism among the Argentine-Cape Verdeans from Buenos Aires. The article highlights the memories and stories of the independence of Cape Verde, and the role played in it by Amílcar Cabral, the main political leader of this process. These narratives, whose specific expression are reflected in the institutional space of the Cape Verdean Society of Dock Sud, are updated from different perspectives and redefine the changing identity borders that allow the delineation of specific forms of political activism in Buenos Aires.

Secrets, Trauma, and the Memory Market (or the return of the repressed in recent Argentine post-dictatorship cultural production

Directory of Open Access Journals (Sweden)

Silvia R Tandeciarz

2012-04-01

Full Text Available Since the end of the last Argentine Dictatorship (1976-1983, a number of feature-length films have engaged in the public debate over the legacies of state terrorism. El secreto de sus ojos (2009, Argentina's most recent Oscar winner, is the latest to do so, exploring the effects of more than a decade of impunity on those who lost their loved ones. Suggesting that restoration of a justice system that works can lead to the restoration of full civic engagement in a healthy body politic, the film raises important questions about citizenship and belonging in a post-national era. This essay explores the film's phenomenal success in the global memory market to illuminate what remains at stake in contemporary narratives of reconciliation.

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

Energy Technology Data Exchange (ETDEWEB)

NONE

1997-12-31

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

Magnetic and Moessbauer Studies of Quaternary Argentine Loessic Soils and Paleosols

International Nuclear Information System (INIS)

Mercader, R. C.; Sives, F. R.; Imbellone, P. A.; Vandenberghe, R. E.

2005-01-01

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.

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.

Training and the personnel accreditation of regulatory functions in the Argentine Republic

International Nuclear Information System (INIS)

Menossi, C.A.; Fraire, E.O.; Segado, R.C.

1998-01-01

Teaching and the training are indispensable for the development of the human resources in all disciplines and occupations of the man in the world scale. About the applications of the radionuclides in the nuclear industry, in Argentina, during the last years, the efforts have been intensified. The necessity of improving the capacity of answer in radiation protection and nuclear safety demands an focus integrated in the teaching and the training. The radiological protection and the nuclear safety presents elements of the applied physics, the chemistry, the biology, the nuclear technology and other specialized subjects. However, in relation with the development of the human resources, specially those that belong to regulatory bodies and perform inspection functions, have important differences, necessities and specific problems. Some differences and problems emerge of the wide diversity and reach of the radiological and nuclear applications. Nowadays, in the world, the applications of the radiation and radioactive sources are being diversified in the medicine (diagnosis, radiotherapy, nuclear medicine, the industry, the agricultures, and the investigation and teaching), that involve a permanent knowledge and actualization of the personnel of the regulatory bodies. For that exposed this work describe training program for the personnel with regulatory functions (inspectors) of the Nuclear Regulatory Authority in the Argentine Republic. Also, this document includes the description of the basic formation and specialized in each case and it reach. (author)

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

Science.gov (United States)

Reuter, M; Pedersen, J S; Keller, L

2005-03-01

WOLBACHIA are maternally inherited bacteria, which are very common in arthropods and nematodes. Wolbachia infection may affect host reproduction through feminisation, parthenogenesis, male-killing, cytoplasmic incompatibility and increased fecundity. Previous studies showing discrepancies between 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 transmission of the symbiont may be important in ants as suggested by the sequence similarity of strains in the three genera Linepithema, Acromyrmex, and Solenopsis native from South and Central America.

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

The occurrence and evolution of nectar extraction apparatus among Hymenoptera ‘Symphyta'. Jervis, M. & Vilhelmsen, L

DEFF Research Database (Denmark)

Vilhelmsen, Lars

2000-01-01

Takeuchi). CNEA of some type or other has arisen at least twice within the family Tenthredinidae and at least twice within the pergid subfamily Euryinae. Evolutionary parallelism in CNEA structure has occurred between the basal, ‘symphytan', hymenopteran lineages and the Apocrita, a phenomenon hitherto...

Individual Rules for Trail Pattern Formation in Argentine Ants (Linepithema humile)

Science.gov (United States)

Perna, Andrea; Granovskiy, Boris; Garnier, Simon; Nicolis, Stamatios C.; Labédan, Marjorie; Theraulaz, Guy; Fourcassié, Vincent; Sumpter, David J. T.

2012-01-01

We studied the formation of trail patterns by Argentine ants exploring an empty arena. Using a novel imaging and analysis technique we estimated pheromone concentrations at all spatial positions in the experimental arena and at different times. Then we derived the response function of individual ants to pheromone concentrations by looking at correlations between concentrations and changes in speed or direction of the ants. Ants were found to turn in response to local pheromone concentrations, while their speed was largely unaffected by these concentrations. Ants did not integrate pheromone concentrations over time, with the concentration of pheromone in a 1 cm radius in front of the ant determining the turning angle. The response to pheromone was found to follow a Weber's Law, such that the difference between quantities of pheromone on the two sides of the ant divided by their sum determines the magnitude of the turning angle. This proportional response is in apparent contradiction with the well-established non-linear choice function used in the literature to model the results of binary bridge experiments in ant colonies (Deneubourg et al. 1990). However, agent based simulations implementing the Weber's Law response function led to the formation of trails and reproduced results reported in the literature. We show analytically that a sigmoidal response, analogous to that in the classical Deneubourg model for collective decision making, can be derived from the individual Weber-type response to pheromone concentrations that we have established in our experiments when directional noise around the preferred direction of movement of the ants is assumed. PMID:22829756

Individual rules for trail pattern formation in Argentine ants (Linepithema humile.

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Andrea Perna

Full Text Available We studied the formation of trail patterns by Argentine ants exploring an empty arena. Using a novel imaging and analysis technique we estimated pheromone concentrations at all spatial positions in the experimental arena and at different times. Then we derived the response function of individual ants to pheromone concentrations by looking at correlations between concentrations and changes in speed or direction of the ants. Ants were found to turn in response to local pheromone concentrations, while their speed was largely unaffected by these concentrations. Ants did not integrate pheromone concentrations over time, with the concentration of pheromone in a 1 cm radius in front of the ant determining the turning angle. The response to pheromone was found to follow a Weber's Law, such that the difference between quantities of pheromone on the two sides of the ant divided by their sum determines the magnitude of the turning angle. This proportional response is in apparent contradiction with the well-established non-linear choice function used in the literature to model the results of binary bridge experiments in ant colonies (Deneubourg et al. 1990. However, agent based simulations implementing the Weber's Law response function led to the formation of trails and reproduced results reported in the literature. We show analytically that a sigmoidal response, analogous to that in the classical Deneubourg model for collective decision making, can be derived from the individual Weber-type response to pheromone concentrations that we have established in our experiments when directional noise around the preferred direction of movement of the ants is assumed.

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

International Nuclear Information System (INIS)

Notari, Carla

2003-01-01

Full text: The preparation of the Master in Nuclear Reactors began in 1996 in the National Atomic Energy Commission of Argentina (CNEA) with multi sectorial meetings where the necessities and perspectives of different actors of the nuclear field were discussed. This activity, performed at the Instituto de Estudios Nucleares of Ezeiza Atomic Center, culminated in 1998. In this year, in the frame of an agreement between the National Technological University and CNEA, the career was created in Buenos Aires faculty with an academic order which established the general frame and required contents. The career arised as a response to different necessities: the unsatisfied demand of specialists from the reactor projects in Buenos Aires area, the aging of CNEA's staff and an unbridged generational gap, the need of a more active participation of the University in the nuclear engineering education field. The choice of a post-grade level is considered adequate because it allows the incorporation of a great variety of professionals in different areas of Engineering, Physics, Chemistry, etc, and provides the candidates with a more flexible profile, a very desirable feature when the nuclear activity is undergoing a transition period. The career is oriented to engineers or graduated in hard sciences. It begins every two years. The activity is full time for students with fellowships. Foreign students can attend with an IAEA fellowship and local ones with CNEA's fellowships. Besides, a number of professionals, generally from the nuclear companies, not always interested in the academic degree, attend particular courses according to their necessities. This heterogeneity has allowed the students a broader interaction with argentine nuclear community. The academic plan comprises a Specialization stage lasting one year and covered by five specific courses: Reactor Physics, Thermal hydraulics, Radioprotection and Safety, Instrumentation and Control, Fuel Cycle. The second year allows to

Criticality analysis of the CAREM-25 reactor irradiated fuel elements storage pool

International Nuclear Information System (INIS)

Albornoz, A.F.; Jatuff, F.E.; Gho, C.J.

1993-01-01

A criticality safety analysis of the irradiated fuel element pool storage of the CAREM-25 reactor was performed. The CAREM project is property of the Comision Nacional de Energia Atomica (CNEA) of Argentine, and it is being executed by INVAP S.E. difficult evaluation of the CAREM core (relatively high -3,4%- enriched U O 2 , Gd 2 O 3 burnable absorber in different densities, or criticality achievement with as few as 7 fuel elements is inherited by the pool storage. The lattice code CONDOR 1.1 was used for investigating the problem scene, and some results compared on the Monte Carlo codes MONK 5.0 and MONK 6.3. Circular and square tubes of 304-L stainless steel, borated steel and boral B 4 C in Al) were tested as suitable channels for fuel element containment, in square and hexagonal arrays; in addition, burnup, burnable absorber concentration, Sm and leakage credits were determined. It was found that the critical is strongly dependent on the separation of the fuel elements in the pool. Out-of-nominal conditions were investigated too, showing that the loss of coolant and the change in temperature and density conditions in the storage lead to an increase in reactivity, but the system's reactivity remains near the safety limits. (author)

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

International Nuclear Information System (INIS)

Ambrosis de Libanati, Nelly

1982-01-01

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. (M.E.L.) [es

Psychomotor development index in children younger than 6 years from Argentine provinces.

Science.gov (United States)

Lejarraga, Horacio; Kelmansky, Diana M; Masautis, Alicia; Nunes, Fernando

2018-04-01

To obtain a psychomotor development index (PDI) for each Argentine province. Using a national, probabilistic, and stratified sample of 13 323 male and female children younger than 6 years selected for the National Survey on Nutrition and Health (Encuesta Nacional de Nutrición y Salud, ENNyS 2004), we estimated the PDI per province based on compliance with 10 developmental milestones. The median age at attainment (median age) of each milestone was estimated adjusting a logistic regression. The PDI was estimated as 100* (1 + b), where "b" is the regression coefficient of y= a + b x, where "y" is the median age as per the national reference (x) minus the median age at attainment of a milestone. The theoretical value expected for the PDI was 100. The PDI per province ranged between 72.1 and 106.4. Most provinces showed a negative regression coefficient, which indicated a progressive increase of the delay in the age at attainment of milestones. The correlation coefficient between the PDI per province and infant mortality in 2005was extremely high: -0.85, suggesting that both indicators share similar biological and social determinants. The PDI was negative because the higher the mortality, the lower the PDI. We have now a positive health indicator available in Argentina: the psychomotor development index, which is a low-cost, easy to collect, and reliable tool that may be used in national health statistics. Sociedad Argentina de Pediatría.

DNA barcoding identifies Argentine fishes from marine and brackish waters.

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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

Characterization of pectinase activity for enology from yeasts occurring in Argentine Bonarda grape

Science.gov (United States)

Merín, María Gabriela; Martín, María Carolina; Rantsiou, Kalliopi; Cocolin, Luca; de Ambrosini, Vilma Inés Morata

2015-01-01

Pectinolytic enzymes are greatly important in winemaking due to their ability to degrade pectic polymers from grape, contributing to enhance process efficiency and wine quality. This study aimed to analyze the occurrence of pectinolytic yeasts during spontaneous fermentation of Argentine Bonarda grape, to select yeasts that produce extracellular pectinases and to characterize their pectinolytic activity under wine-like conditions. Isolated yeasts were grouped using PCR-DGGE and identified by partial sequencing of 26S rRNA gene. Isolates comprised 7 genera, with Aureobasidium pullulans as the most predominant pectinolytic species, followed by Rhodotorula dairenensis and Cryptococcus saitoi. No pectinolytic activity was detected among ascomycetous yeasts isolated on grapes and during fermentation, suggesting a low occurrence of pectinolytic yeast species in wine fermentation ecosystem. This is the first study reporting R. dairenensis and Cr. saitoi species with pectinolytic activity. R. dairenensis GM-15 produced pectinases that proved to be highly active at grape pH, at 12 °C, and under ethanol and SO2 concentrations usually found in vinifications (pectinase activity around 1.1 U/mL). This strain also produced cellulase activity at 12 °C and pH 3.5, but did not produce β-glucosidase activity under these conditions. The strain showed encouraging enological properties for its potential use in low-temperature winemaking. PMID:26413065

Alcohol Consumption and Violence among Argentine Adolescents

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Mariaelena Pierobon

2013-01-01

Full Text Available Objective: This study investigated the association between alcohol and violence among Argentine youth. Methods: Data from the 2007 Argentina Global School-based Student Health Survey (GSHS, a nationally representative survey of middle school students, were examined using age-adjusted logistic regression models. Results: Of the 1,328 participating students aged 13 to 15 years old, 51.9% reported drinking alcohol in the previous month, with higher rates among males (p = 0.04 and older students (p < 0.01. Both male and female drinkers were nearly twice as likely as non-drinkers to report being physically attacked, being in a physical fight, and having thoughts about self-directed violence. Among drinkers, those who reported poor mental health, were victims of bullying, used tobacco or drugs, or skipped school without per- mission were approximately twice as likely as other drinkers to have engaged in violent activities. Conclusion: Public health interventions targeting violence among young adolescents should be developed in combination with alcohol education programs. Resumo: Objetivo: Este estudo investigou a associação entre álcool e violência na população de jovens argentinos. Métodos: Dados da Global School-based Student Health Survey (GSHS de 2007, uma pesquisa representativa em termos nacionais com alunos do ensino médio, foram exami- nados utilizando-se modelos de regressão logística ajustados por idade. Resultados: Dos 1328 alunos participantes entre 13 e 15 anos de idade, 51,9% declararam ter consumido álcool no último mês, com taxas mais elevadas entre meninos (p = 0,04 e alunos mais velhos (p < 0,01. Homens e mulheres que bebem demonstraram estar quase duas vezes mais propensos a relatar agressão física, quando em uma briga física, e pensamentos sobre violência autoinfligida do que aqueles que não bebem. Entre as pessoas que bebem, aquelas que reportaram saúde mental precária, haviam sido vítimas de bullying

The actor between dictatorship and post-dictatorship. Corporealities in conflict in Argentine cinema and theatre during the return of democracy (1983/1989

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Karina Mauro

2016-03-01

Full Text Available We propose to analyze the acting in cinema and theater of the argentine democratic return, in order to highlight its political dimension implied. Thanks to the willingness to represent the recent past, acting in films will be limited to the realism. But at the same time, new expressions of young artists based in the irruption of the body and sexuality emerged in the theater. We believe that this aggressive deployment of a revulsive, offset and young corporality, constituted a vital affirmation before the horror of the dictatorship. In addition, these experiences reacted to the imposition of an acting performance at the service of transmission of a message, imaginary of "productive body" present in realism, but also in groups militants of the 70s.

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

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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.

Successive reactivation of older structures under variable heat flow conditions evidenced by K-Ar fault gouge dating in Sierra de Ambato, northern Argentine broken foreland

Science.gov (United States)

Nóbile, Julieta C.; Collo, Gilda; Dávila, Federico M.; Martina, Federico; Wemmer, Klaus

2015-12-01

The Argentine broken foreland has been the subject of continuous research to determine the uplift and exhumation history of the region. High-elevation mountains are the result of N-S reverse faults that disrupted a W-E Miocene Andean foreland basin. In the Sierra de Ambato (northern Argentine broken foreland) the reverse faults offset Neogene sedimentary rocks (Aconquija Fm., ˜9 Ma) and affect the basement comprising Paleozoic metamorphic rocks that have been dated at ˜477-470 Ma. In order to establish a chronology of these faults affecting the previous continuous basin we date the formation age of clay minerals associated with fault gouge using the K-Ar dating technique. Clay mineral formation is a fundamental process in the evolution of faults under the brittle regime (history with a minimum age of ˜360 Ma and a last clay minerals forming event at ˜220 Ma. Moreover, given the progression of apparent ages decreasing from coarse to fine size fractions (˜360-311 Ma for 2-1 μm grain size fraction, ˜326-286 Ma for 1-0.2 μm and ˜291-219 Ma of <0.2 μm), we modeled discrete deformation events at ˜417 Ma (ending of the Famatinian cycle), ˜317-326 Ma (end of Gondwanic orogeny), and ˜194-279 Ma (Early Permian - Jurassic deformation). According to our data, the Neogene reactivation would not have affected the K-Ar system neither generated a significant clay minerals crystallization in the fault gouge, although an exhumation of more than 2 Km is recorded in this period from stratigraphic data.

Utilization of noise analysis technique for mechanical vibrations estimation in the ATUCHA1 and Embalse Argentine NPP

International Nuclear Information System (INIS)

Lescano, V.H.; Wentzeis, L.M.; Guevara, M.; Moreno, C.; Pineyro, J.

1996-01-01

In Argentine, comprehensive noise measurements have been performed with the reactor instrumentation of the PHWR power plant Atucha I and Embalse. The Embalse reactor is a CANDU-600 (600 Mwe) type pressurized heavy water reactor. It's a heavy water moderator and heavy water cooled natural uranium fueled pressure tube system. Signal of vanadium and platinum type in core-self power neutron detectors of ex-core ion chambers and of a moderator pressure sensor have been recorded and analysed. The vibration of reactor internals as vertical and horizontal in-core neutron flux detectors units and the coolant channels systems, consisting of calandria and pressure tubes with fuel bundles, have been identified and monitored during normal reactor operation. Atucha I, is a PHWR reactor natural uranium fueled, and heavy water moderated and cooled. Neutron noise techniques using of ex-core ionization chambers and in-core Vanadium SPND's were implemented, among others, in order to produce early detection of anomalous vibrations in the reactor internals. Noise analysis was successfully performed to identify normal and peculiar vibrations in particular reactor internals. (author)

Analysis of ELA-DQB exon 2 polymorphism in Argentine Creole horses by PCR-RFLP and PCR-SSCP.

Science.gov (United States)

Villegas-Castagnasso, E E; Díaz, S; Giovambattista, G; Dulout, F N; Peral-García, P

2003-08-01

The second exon of equine leucocyte antigen (ELA)-DQB genes was amplified from genomic DNA of 32 Argentine Creole horses by PCR. Amplified DNA was analysed by PCR-restriction fragment length polymorphism (RFLP) and PCR-single-strand conformation polymorphism (SSCP). The PCR-RFLP analysis revealed two HaeIII patterns, four RsaI patterns, five MspI patterns and two HinfI patterns. EcoRI showed no variation in the analysed sample. Additional patterns that did not account for known exon 2 DNA sequences were observed, suggesting the existence of novel ELA-DQB alleles. PCR-SSCP analysis exhibited seven different band patterns, and the number of bands per animal ranged from four to nine. Both methods indicated that at least two DQB genes are present. The presence of more than two alleles in each animal showed that the primers employed in this work are not specific for a unique DQB locus. The improvement of this PCR-RFLP method should provide a simple and rapid technique for an accurate definition of ELA-DQB typing in horses.

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.

Circadian analysis of myocardial infarction incidence in an Argentine and Uruguayan population

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Nicola-Siri Leonardo

2006-01-01

Full Text Available Abstract Background The occurrence of variations in the spectrum of cardiovascular disease between different regions of the world and ethnic groups have been the subject of great interest. This study report the 24-h variation of myocardial infarction (MI occurrence in patients recruited from CCU located in Argentina and Uruguay. Methods A cohort of 1063 patients admitted to the CCU within 24 h of the onset of symptoms of an acute MI was examined. MI incidence along the day was computed in 1 h-intervals. Results A minimal MI incidence between 03:00 and 07:00 h and the occurrence of a first maximum between 08:00 and 12:00 h and a second maximum between 15:00 and 22:00 h were verified. The best fit curve was a 24 h cosinor (acrophase ~ 19:00 h, accounting for 63 % of variance together with a symmetrical gaussian bell (maximum at ~ 10:00 h, accounting for 37 % of variance. A similar picture was observed for MI frequencies among different excluding subgroups (older or younger than 70 years; with or without previous symptoms; diabetics or non diabetics; Q wave- or non-Q wave-type MI; anterior or inferior MI location. Proportion between cosinor and gaussian probabilities was maintained among most subgroups except for older patients who had more MI at the afternoon and patients with previous symptoms who were equally distributed among the morning and afternoon maxima. Conclusion The results support the existence of two maxima (at morning and afternoon hours in MI incidence in the Argentine and Uruguayan population.

Argentines' collective memories of the military Junta of 1976: differences and similarities across generations and ideology.

Science.gov (United States)

Muller, Felipe; Bermejo, Federico; Hirst, William

2016-08-01

Although memories about a nation's past usually are semantic in nature, a distinction needs to be made between lived and distant semantic collective memories. The former refers to memories of community-relevant events occurring during the lifetime of the rememberer, whereas the latter to memories of distant events. Does the content of lived and distant semantic collective memories differ? Employing both free and cued recall, we examined the memories of younger and older Argentines of the Military Junta of 1976. We also examined the effects of political ideology. Content analysis indicated that (1) lived semantic collective memories were more likely to contain personal recollections than distant semantic collective memories, even though those with distant semantic collective memories could have incorporated memories of the parent's personal experience in their recollections, (2) lived semantic collective memories contained more causal statements, and (3) those on the Right with distant semantic collective memories were more likely to claim that they "Don't know" or offer positive accounts of the Junta, suggesting a need to "defend" the reputation of those on the Right. The results are discussed in terms of the goals and plans different generations might have when recollecting their nation's past.

Reduction of water consumption in the dynamic acid leaching process of uranium

International Nuclear Information System (INIS)

Chocron, M.; Arias, M.J.; Avato, A.M.; Díaz, V.A.

2013-01-01

In 2006 the Argentine state announced a plan to reactivate the nuclear sector. As a result of this decision, the National Atomic Energy Commission (CNEA) resumed its research in uranium mining for Argentine deposits. The first step was the study of the leaching process, mainly the dynamic leaching. In this work the influence of the reduction of the water content in the dynamic leaching process in acid medium, at laboratory scale and under batch operating conditions, on the main operating parameters (concentration of the leaching reagent, the oxidizing reagent and The reaction temperature). The percentages of pulp solids studied in the dynamic leaching were 53% and 66% w / w. For the tests uranium-molybdenum ores of the sandstone type were used. Two different working schemes were used to study the different operating parameters. In the tests carried out with 53% of solid in pulp, the parameters were studied individually (varying one parameter at a time), while working with a pulp of 66% solids, the study of the parameters was performed by a Factorial design of two levels of three variables, which in addition to studying the dependence of the different parameters allowed to analyze how they influence each other. During the leaching tests with 66% solids content in pulp, changes in the geometric and dynamic conditions of the system were necessary because of the poor mixing observed when using the same agitation conditions used in the leaching tests with 53% solids in pulp. When comparing the tests for both solids content conditions (53% and 66% w / w), similar extraction yields were observed for both uranium and molybdenum (more than 90% for uranium and more than 80% for The molybdenum). As a final result, the process water consumption (380 liters of water per ton of ore) is reduced by more than 50% by working with pulps of 66% w / w of solids, obtaining acceptable extraction yields and, as an additional, reducing The consumption of the leaching reagent. (author)

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

Agreement of 13 December 1991 between the Republic of Argentina, the Federative Republic of Brazil, the Brazilian-Argentine agency for accounting and control of nuclear materials and the International Atomic Energy Agency for the application of safeguards

International Nuclear Information System (INIS)

1997-08-01

The document reproduces the text of an agreement by exchange of letters with the Argentine Republic in connection with the Treaty on the Non-Proliferation of Nuclear Weapons and the Treaty for the Prohibition of Nuclear Weapons in Latin America and the Caribbean. The agreement was approved by the Board of Governors on 18 March 1997 and entered into force on that date

Antecedents of historical evolution of the uranium resources in the Cuyo region, between 1951 and 1968

International Nuclear Information System (INIS)

Vergara Bai, A.A.

1992-01-01

The present article pretends to summarize the initial stage of the development of national uranium resources - focusing the labor done by the Escuela Superior de Ingenieria en Combustible of the Universidad Nacional de Cuyo - between the years 1951 and 1955 - feeling that it is necessary to describe the situations that were originated during the development of the uranium's mineral investigation. This was started by the Escuela Superior de Ingenieria en Combustible of U.N. de Cuyo, which facilitated the connection with CNEA, that had been created in 1950. This leaded to the economical help from CNEA until 1955, for the realization and execution of the programmed works. The national antecedents are described, taking into account the existence of deposits in this country. The historical evolution of the exloration of uranium in Cuyo is divided in three periods, which are described in detail in this work. First and foremost, the period that goes from 1951 to 1955 (U.N. de Cuyo and CNEA); then, the period that goes from 1956 to 1961 (CNEA) where the achievements obtained determined the new modern structures done by the CNEA in order to continue with the development of the uranium resources of the country. After this, the period that goes from 1961 to 1968 (activities and successes of the West Delegation) is pointed out. Finally, the evolution of the factories of uranium mineral treatment, i n the period between 1952 and 1990, is also described in this article. (Author) [es

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

Directory of Open Access Journals (Sweden)

Gastón Julián Gil

2010-12-01

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.Palabras Clave: Antropología argentina; Neoevolucionismo; Ecología cultural; UniversidadAbstractThe introduction of the U.S. anthropologist Julian Haynes Steward (1902-1972 to the Argentine courses of Anthropology in the mid-50´s, launched a process of partial renovation in Argentine anthropology.  His materialistic, neoevolutionist, and ecological scope applied to Archeology and, later, to what would become Social Anthropology, differed from more established views such as German historical-cultural theory led by Italian anthropologist José Imbelloni and Austrian archaeologist Oswald Menghin. This paper describes and analyzes the arrival of Steward’s ideas to some Argentine schools of Anthropology (Córdoba, Litoral/Rosario and La Plata in the late 40s, by means of archaeologist Alberto Rex González, a Columbia Ph.D. and one of Steward’s students. In fact, studying Steward�

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».

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

[Suitability of wild underexploited vegetables from the Argentine Chaco as a food resource].

Science.gov (United States)

Freyre, M R; Baigorria, C M; Rozycki, V R; Bernardi, C M; Charpentier, M

2000-12-01

The nutritional value of wild underexploited vegetable samples collected in the Argentine Chaco was investigated. Leaves from Hipochaeris sp.-, Coronopus didimus and Portulaca olearacea; fruits from Zyziphus sativa, Brumelia obtusifolia and Eugenia uniflora; and roots of Canna coccinea were included in this work; several separate samples being taken at least during two consecutive harvesting seasons. Values for moisture, protein, total lipids, crude fiber, ash, reducing and total sugars, starch, total pectins and energy are given. Mineral micronutrient contents are reported for calcium, potassium, magnesium, iron and phosphorus, as well as vitamin values (ascorbic acid and beta-carotene). Higher concentrations of macronutrients were found in the leafy vegetables (32-50 Kcal/100 g) than in commercially exploited cultivars (14-30 Kcal/100 g), as shown by an increased energy value, the protein content of Portulaca olearacea (3.74 g/100 g) being highly remarkable. Unusually high micronutrient figures were also determined in Coronopus didimus, with 172.3; 3.98, and 46.7 mg/100 g, for calcium, iron and magnesium, respectively. In general, fruits also showed higher macronutrient contents, with the exception of proteins, with less but constant values (1.58 to 1.74 g/100 g), although contributing more energy than commercial cultivars (70 to 147 Kcal/100 g). Equally important proved to be the provitamin A content in Eugenia uniflora (11.98 mg/100 g). Roots of Canna coccinea revealed the lowest energy value (34 Kcal/100 g) but surprisingly, the highest content of phosphorus of all the species under study.

Quality management program according to the ISO 9001: 2000 for the high density research reactor fuel development project (CADRIP)

International Nuclear Information System (INIS)

Mazzini, M.; Mamberto, L.; Piazza, A.F.

2002-01-01

The Quality is recognized at world level as the most effective and competitive strategy for the economic survival and the prosperity of organizations. In such a sense it is used to speak of the quality globalization. To be able to be competitive and to satisfy the more and more demanding expectations of the customers, the organization should use systems every time more effective and efficient. Such systems should lead to a continuous improvement of the quality and a highest satisfaction of the customers and of all the involved sectors (personnel, collaborators, stakeholders, suppliers, society). To these effects the National Commission of Atomic Energy of the Argentine Republic (CNEA) there is elaborated, ace necessary methodological instrument to guide and assessment t the process of continuous improvement of all the activities of the organization, to Quality Management Program (PGC) from which the Quality Systems of the facilities, laboratories and projects depends. The Quality System of the Development of Nuclear Fuels of High Density Project (CADRIP) was develop in accordance of the requirements of the PGC and the ISO 9001:2000, IAEA 50-C/SG-Q and AR 3.6.1. of the Nuclear Regulatory Body standards. The work describes this quality system, the systematic identification and administration of the processes used for the organization and the interaction among them. (author)

Echinobothrium notoguidoi n. sp. (Cestoda: Diphyllidea) from Mustelus schmitti (Chondrichthyes: Carcharhiniformes) in the Argentine Sea.

Science.gov (United States)

Ivanov, V A

1997-10-01

A new cestode, Echinobothrium notoguidoi n. sp., is described from the spiral intestine of the shark Mustelus schmitti, from coastal waters off Mar del Plata, Argentina. This species is distinguished from all others in the genus by a rostellar armature consisting of 2 apical groups of 31 large hooks each, arranged in 2 rows (16 anterior, 15 posterior) with 13 hooklets per side, a wide corona of 8-11 rows of spines posterior to the rostellum, 8 rows of 24-26 spines on the cephalic peduncle, and 11-15 testes per proglottid. The new species most closely resembles 2 congeners that also parasitize sharks, Echinobothrium musteli and Echinobothrium scoliodoni, on the basis of the armature of the rostellum and cephalic peduncle and the presence of a corona of small spines. Echinobothrium notoguidoi can be differentiated from E. musteli by the number of hooklets (3) and testes (22), and from E. scoliodoni by the number of large hooks (10-13), spines on the cephalic peduncle (> 100), and segments (40-50). Echinobothrium notoguidoi is clearly distinguished from Echinobothrium pigmentatum described previously from Zapteryx brevirostris in Argentine waters by the following combination of characters: corona of hooks lacking, possession of fewer apical hooks (20), hooklets in a continuous row instead of separate groups, fewer spines in the cephalic peduncle (9-13 per row), and fewer testes (5-7) per proglottid.

Chemical quality of different argentine honey varieties, irradiated to control american foulbrood; Calidad química de diferentes variedades de mieles argentinas, irradiadas para controlar 'loque americana'

Energy Technology Data Exchange (ETDEWEB)

Zunich, C.D., E-mail: c.zunich@yahoo.com.ar [Universidad Tecnológica Nacional, Avellaneda (Argentina). Facultad de Ingeniería, Maestria en Tecnologia de Alimentos; Markowski, I., E-mail: imarkowski@unla.edu.ar [Universidad Nacional de Lanús, Buenos Aires (Argentina). Laboratorio de Fisico-Quimica; Narvaiz, Patricia [Comisión Nacional de Energía Atómica, Ezeiza (Argentina). Gerencia de Aplicaciones y tecnologia de Radiaciones, Sector Irradiacion de Alimentos

2011-07-01

Gy dose, enough to control American foulbrood, and even at a 20 kGy dose, maximum allowed by the AFC for a minimum dose of 10 kGy, maintained the chemical quality of these five Argentine honey varieties during 10 months at room temperature. (author) [Spanish] Texto completo: 'Loque americana'es una enfermedad que afecta seriamente a las abejas. La miel puede estar contaminada con esporas de la bacteria causante, lo cual restringe su comercialización. La literatura científica informa que estas esporas, resistentes al calor y a agentes químicos, son inactivadas en miel por 10 kilogray (kGy) de energía ionizante, tratamiento que se requiere por ley en Sudáfrica para importar este producto. La inocuidad de los alimentos irradiados está garantizada por la Organización Mundial de la Salud. Considerando que Argentina es un importante productor y exportador de miel, el objetivo de este trabajo fue evaluar el efecto de esta irradiación en su calidad química durante el almacenamiento. Mieles de distintas características, provenientes de 5 regiones del país: Centro, Patagonia, Norte, Litoral, Pampa Húmeda, fueron aportadas por productores congregados en una comisión denominada 'Miel fraccionada', dependiente de la Secretaría de Agricultura, Ganadería, Pesca y Alimentación de la Nación. Quince kilogramos de cada variedad de miel fueron fraccionados en frascos de polipropileno con tapa de polietileno. Se irradiaron muestras en la Planta Semi Industrial de cobalto 60 del Centro Atómico Ezeiza, de actividad aproximada de 500.000 Ci, a dosis de 0, 10 y 20 kGy, medidas con dosímetro de dicromato de plata por el laboratorio Dosimetría de Altas Dosis (CNEA), uniformidad de dosis promedio de 1,1 y velocidad de dosis de 12 kGy/h. Muestras controles e irradiadas fueron almacenadas a temperatura y humedad ambientes durante 10 meses. Se realizaron análisis químicos requeridos por el Código Alimentario Argentino según métodos normatizados: humedad, acidez, diastasas, az

Argentinian Experience and Perspectives for Small and Medium Sized Reactors. Annex I

Energy Technology Data Exchange (ETDEWEB)

NONE

2013-12-15

The National Atomic Energy Commission (CNEA) was created on 31 May 1950. It was responsible for all nuclear activities in the country until 1994. In 1994, the regulatory body and the operational activities of nuclear power plants were separated. A utility named Nucleoelectrica Argentina (NASA) was created. The present missions of the CNEA are: - To assist the national Government in nuclear policy; - To provide research and development in nuclear areas, including nuclear power plants, research reactors and nuclear fuel cycles; - To provide spent fuel and radioactive waste management, decommissioning of nuclear and radioactive installations, and environmental remediation; - By itself or through related companies, to provide radioisotopes for medicine and industry, and provide services to nuclear power plants and conventional industries. Development of human resources is yet another important objective of CNEA activities.

Irradiation of Argentine (U,Pu)O2 MOX fuels. Post-irradiation results and experimental analysis with the BACO code

International Nuclear Information System (INIS)

Marino, A.C.; Perez, E.; Adelfang, P.

1996-01-01

The irradiation of the first Argentine prototypes of pressurized heavy water reactor (PHWR) (U,Pu)O 2 MOX fuels began in 1986. These experiments were carried out in the High Flux Reactor (HFR)-Petten, Holland. The rods were prepared and controlled in the C NEA's α Facility. The postirradiation examinations were performed in the Kernforschungszentrum, Karlsruhe, Germany and in the Joint Research Center (JRC), Petten. The first rod has been used for destructive pre-irradiation analysis. The second one as a pathfinder to adjust systems in the HFR. Two additional rods including iodine doped pellets were intended to simulate 15000 MWd/T(M) burnup. The remaining two rods were irradiated until 15000 MWd/T(M). One of them underwent a final ramp with the aim of verifying fabrication processes and studying the behaviour under power transients. BACO (BArra COmbustible) code was used to define the power histories and to analyse the experiments. This paper presents a description of the different experiments and a comparison between the results of the postirradiation examinations and the BACO outputs. (orig.)

Technologic spin-off from CNEA's activities; Tecnologias derivadas de las actividades de la CNEA

Energy Technology Data Exchange (ETDEWEB)

Belinco, Cesar G [Comision Nacional de Energia Atomica, General San Martin (Argentina). Centro Atomico Constituyentes

2001-07-01

An analysis is made of the spin-off of technology from the nuclear activities in Argentina. Several examples are mentioned in fields such as material sciences, non-destructive testing, forensic research, space activities, instrumentation as well as in environmental studies.

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

Agreement of 13 December 1991 between the Republic of Argentina, the Federative Republic of Brazil, the Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials and the International Atomic Energy Agency for the Application of Safeguards

International Nuclear Information System (INIS)

1994-03-01

The text of the Agreement (and the Protocol thereto) between the Republic of Argentina, the Federative Republic of Brazil, the Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials and the International Atomic Energy Agency for the Application of Safeguards is reproduced in this document for the information of all Members. The Agreement was approved by the Agency's Board of Governors on 7 December 1991 and signed in Vienna on 13 December 1991

Région et nation en Amérique Latine: le cas du 'Norte' argentin (Tucumán, Salta, Jujuy de 1778 à 1914

Directory of Open Access Journals (Sweden)

1989-01-01

Full Text Available Cet article se donne pour but d'esquisser l'intelligibilité globale de l'histoire régionale du Nord-Ouest argentin dans ses rapports à l'histoire nationale argentine de 1778 à 1914. Il analyse d'abord la période d'affirmation de ces sociétés provinciales créoles aux avant-postes de l'argentinité en formation: après l'autonomisation du Vice-Royaume de La Plata, pendant la guerre de l'indépendance, pendant les guerres civiles qui s'apaisent après 1852. Il montre ensuite comment la consolidation de ces sociétés régionales, qui se produit de 1852 à 1888 sur la base d'une économie d'hinterland pratiquement séparée de celle de Buenos Aires mais intégrée au nord du Chili et au sud de la Bolivie, précapitaliste mais mercantile, traditionnelle mais en expansion, réalise l'idéal politique poursuivi ici par les élites locales depuis 1778: celui de petites républiques provinciales fortement autosuffisantes face au cosmopolitisme de la métropole portuaire. La situation bascule après 1888 quand la connexion directe de ces provinces au marché national et mondial (par les banques et le chemin de fer provoque ici une politique de front de colonisation (pastorale et minière des hautes terres andines de puna. Désormais 'intégrées-marginalisées' en situation de périphérie (du marché national, du marché mondial, ces provinces entrent dans le XXème siècle en état de crise régionale dans la nation argentine. Este artículo intenta bosquejar la inteligibilidad global de la historia regional del Noroeste argentino en relación con la historia nacional argentina desde 1778 hasta 1914. Analiza primero el período de afirmación de estas sociedades provincianas criollas a la vanguardia de la argentinidad en formación: después de la autonomización del Virreinato de La Plata, durante la guerra de independencia, a lo largo de las guerras civiles que se apaciguan después de 1852. Luego muestra cómo la consolidación de estas

LEU fuel fabrication in Argentina

International Nuclear Information System (INIS)

Giorsetti, D.R.; Gomez, J.O.; Marajofsky, A.; Kohut, C.

1985-01-01

As an Institution, aiming to meet with its own needs, CNEA has been intensively developing reduced enriched fuel to use in its own research and test reactors. Development of the fabrication technology as well as the design, installation and operation of the manufacturing plant, have been carried out with its own funds. Irradiation and post-irradiation of test miniplates have been taking place within the framework of the RERTR program. During the last years, CNEA has developed three LEU fuel types. In the previous RERTR meetings, we presented the technological results obtained with these fuel types. This paper focuses on CNEA LEU fuel element manufacturing status and the trained personnel we can offer in design and manufacture fuel capability. CNEA has its own fuel manufacturing technology; the necessary facilities to start the fuel fabrication; qualified technicians and professionals for: fuel design and behaviour analysis; fuel manufacturing and QA; international recognition of its fuel development and manufacturing capability through its ORR miniplate irradiation; its own natural uranium and the future possibility to enrich up to 20% U 235 ; the probability to offer a competitive fuel manufacturing cost in the international market; the disposition to cooperate with all countries that wish to take part and aim to reach an self-sufficiency in their own fuel supply needs

Annual report and balance 2003; Memoria y balance 2003

Energy Technology Data Exchange (ETDEWEB)

NONE

2004-07-01

This annual report presents the CNEA's (National Atomic Energy Commission) activities during the year 2003. The first part is devoted to the general objectives and accomplishments of the Organization. The second part describes the programs and projects in different fields such as reactors and nuclear power plants, fuel cycle, radioactive waste management, radioisotopes and radiation, research and development in basic sciences and engineering, decommissioning of nuclear installations, etc. The evolution of the human resources and the training activities are outlined in the third part of the report. The CNEA's nuclear centers are described in part 4 and the technical assistance services and production activities in part 5. Nuclear safety and safeguards are covered in the 6th section. Parts 7 and 8 present the information on inter institutional affairs and on the CNEA related enterprises respectively. The last part is the financial accounting.

Annual report and balance 2003

International Nuclear Information System (INIS)

2004-01-01

This annual report presents the CNEA's (National Atomic Energy Commission) activities during the year 2003. The first part is devoted to the general objectives and accomplishments of the Organization. The second part describes the programs and projects in different fields such as reactors and nuclear power plants, fuel cycle, radioactive waste management, radioisotopes and radiation, research and development in basic sciences and engineering, decommissioning of nuclear installations, etc. The evolution of the human resources and the training activities are outlined in the third part of the report. The CNEA's nuclear centers are described in part 4 and the technical assistance services and production activities in part 5. Nuclear safety and safeguards are covered in the 6th section. Parts 7 and 8 present the information on inter institutional affairs and on the CNEA related enterprises respectively. The last part is the financial accounting

Argentine nuclear fuels MOX irradiated in the Petten reactor: Analysis of experience with the BACO code

Energy Technology Data Exchange (ETDEWEB)

Marino, A C; Perez, E; Adelfang, P [Argentine Atomic Energy Commission, Buenos Aires (Argentina)

1997-08-01

The irradiation of our first prototypes of MOX nuclear fuels fabricated in Argentina began in 1986. These experiences had been made in the HFR-Petten reactor, Holland. The six rods were fabricated in the {alpha} Facility (GAID-CNEA-Argentina). The first rod has been used for destructive pre-irradiation analysis in the KFK (Kernforschungszentrum Karlsruhe), Germany. The second one was a pathfinder for calibrating systems in the HFR. Another two rods included doped pellets based on iodine. One of them included CsI and auxiliary components. The second one included elemental iodine. The concentration of iodine was intended to simulate 15 MWd/ton(M) of burnup. We defined the power histories with the BACO code. We assumed a cycle of 15 days that included interaction treatments of cladding and pellet due to the power cycling. The last ramp is let run until stress corrosion cracking (SCC) is induced. The experience named BU15 was done with the last two rods. The final burnup was 15 MWd/ton(M), and a final ramp test was arranged for one of them. This burnup is the same as the previous two rods. The power level during irradiation was low and without major solicitations, only the normal shutdowns of the HFR. The ramp was similar to that used for the iodine test. We attempt to see the correct correspondence between the BU15 and the doping test. The pathfinder had an excellent behavior in the HFR reactor. The presence of microcracks inside the cladding was observed in the iodine test as we predicted with the BACO code. The post-irradiation tests of the BU15 experience has just ended. The development of the ramp was interrupted due to an increase of activity in the system. We presumed the presence of a failure in the rod. The visual inspection of the rod shows an atypical failure for this kind of fuel, i.e. they found a small circular hole. We use the BACO code for the behavior analysis of the fuel rods. 23 refs, 29 figs, 5 tabs.

Argentine nuclear fuels MOX irradiated in the Petten reactor: Analysis of experience with the BACO code

International Nuclear Information System (INIS)

Marino, A.C.; Perez, E.; Adelfang, P.

1997-01-01

The irradiation of our first prototypes of MOX nuclear fuels fabricated in Argentina began in 1986. These experiences had been made in the HFR-Petten reactor, Holland. The six rods were fabricated in the α Facility (GAID-CNEA-Argentina). The first rod has been used for destructive pre-irradiation analysis in the KFK (Kernforschungszentrum Karlsruhe), Germany. The second one was a pathfinder for calibrating systems in the HFR. Another two rods included doped pellets based on iodine. One of them included CsI and auxiliary components. The second one included elemental iodine. The concentration of iodine was intended to simulate 15 MWd/ton(M) of burnup. We defined the power histories with the BACO code. We assumed a cycle of 15 days that included interaction treatments of cladding and pellet due to the power cycling. The last ramp is let run until stress corrosion cracking (SCC) is induced. The experience named BU15 was done with the last two rods. The final burnup was 15 MWd/ton(M), and a final ramp test was arranged for one of them. This burnup is the same as the previous two rods. The power level during irradiation was low and without major solicitations, only the normal shutdowns of the HFR. The ramp was similar to that used for the iodine test. We attempt to see the correct correspondence between the BU15 and the doping test. The pathfinder had an excellent behavior in the HFR reactor. The presence of microcracks inside the cladding was observed in the iodine test as we predicted with the BACO code. The post-irradiation tests of the BU15 experience has just ended. The development of the ramp was interrupted due to an increase of activity in the system. We presumed the presence of a failure in the rod. The visual inspection of the rod shows an atypical failure for this kind of fuel, i.e. they found a small circular hole. We use the BACO code for the behavior analysis of the fuel rods. 23 refs, 29 figs, 5 tabs

Fixing tools of targets for radioisotope production in the RA10

International Nuclear Information System (INIS)

Peirone, M.; Coleff, A.; Chasseur, A.

2012-01-01

The RA-10 project is about the design and construction of a reactor for radioisotopes production and scientific research in the nuclear area. Most of the reactor design comes from INVAP SE, however some of the design job was performed in CNEA, i.e. the so called Outer Core Experimental Devices (DEEN) and their interfaces with the Reflector Tank were designed in CNEA and the documentation of the basic design was recently released (author)

Argentinean activities related to Fast Reactors

International Nuclear Information System (INIS)

Azpitarte, Osvaldo

2012-01-01

CNEA objectives in the area of Generation IV nuclear reactors: Implement a programme for the monitoring of the global progress of new technologies for Generation IV nuclear reactors and their fuel cycles, in order to generate and assess associated lines of R&D. – Perform studies and evaluations for defining the Generation IV line or lines on which CNEA would be interested; – Promote the participation on specific international projects; – Implementation of experimental facilities

Production of irradiated bone derivatives for odontology and traumatology

International Nuclear Information System (INIS)

Martin, Hugo R.; Murature, D.A.

2004-01-01

In 2003, the National Atomic Energy Commission (CNEA), the Industrial Human Tissue Processing Plant of the Cordoba University and the Cordoba Science Agency analyzed the joint installation and operation of a Gamma Radiosterilization Module for the production of sterile human bone tissues as allografts for odontology and traumatology. The irradiation procedures were developed at the CNEA's Ezeiza Atomic Center. The irradiated bone tissues are being used in odontology with an excellent clinical behaviour. (author)

Medical applications of the nuclear energy

International Nuclear Information System (INIS)

Ugarte, Valentin E.

2001-01-01

The Nuclear Medicine School Foundation, in Mendoza (Argentina) was created in 1986 by the National Atomic Energy Commission (CNEA) and is supported by the Government of the Mendoza Province, the CNEA, and the National University of Cuyo. The main activities of the school are medical diagnosis using nuclear techniques and the training of physicians and technicians in nuclear medicine. Teletherapy and brachytherapy are also performed. The use of the PET is described in some detail

Development of a sperm cryopreservation protocol for the Argentine black and white tegu (Tupinambis merianae).

Science.gov (United States)

Young, Carly; Ravida, Nicole; Curtis, Michelle; Mazzotti, Frank; Durrant, Barbara

2017-01-01

Of the 934 lizard species evaluated by the International Union for the Conservation of Nature (IUCN), at least one-third is threatened with extinction. However, there are no reports of semen cryopreservation efforts for lizards. Invasive Argentine black and white tegus were captured in the Florida Everglades, and sperm was collected postmortem. Initial motility score (IMS; % motile × speed of progression 2 × 100), plasma membrane integrity (IPL), and acrosome integrity (IAC) were recorded. Sperm was diluted in TEST-yolk buffer with a final glycerol or dimethylsulfoxide (DMSO)concentration of 8%, 12%, or 16%, and frozen at 0.3 °C, 1.0 °C, or 6.3 °C/min. At thaw, all variables were expressed as the percentage of initial (%IMS, %IPL, and %IAC). The 0.3 °C freeze rate was more successful than 1.0 °C and 6.3 °C/min in preserving %IMS and %IPL. DMSO preserved %IMS, %IPL, and %IAC better than glycerol. To determine the best overall cryopreservation protocol, a sperm quality index was calculated, giving equal weight to each of the three indicators of cryosurvival. Because there were significant interactions between freeze rate and cryoprotectant concentration, each treatment was compared with all others. The sperm quality index analysis revealed that tegu sperm frozen at 0.3 °C/min with 12% DMSO exhibited the highest postthaw viability compared with all other treatments. Copyright © 2016 Elsevier Inc. All rights reserved.

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

Plio-Pleistocene paleo-erosion rates as a recorder of orographic barrier uplift in the NW-Argentine Andes (Humahuaca Basin)

Science.gov (United States)

Pingel, Heiko; Schildgen, Taylor; Wittmann, Hella

2017-04-01

As an integral part of the Eastern Cordillera, the intermontane Humahuaca Basin in the NW Argentine Andes is located in transition between the arid and internally drained Puna Plateau to the west and the humid broken foreland to the east. In combination with moisture-bearing air masses sourced in the Atlantic Ocean and the Amazon Basin, the present-day topographic gradient of the eastern Andean margin comprises an efficient orographic barrier that results in a strong precipitation gradient, with rainfall of more than 2,000 mm/a along the eastern flanks and history of the basin highlights important changes of the depositional system, apparently associated with the transformation from a humid foreland to a fluvially restricted and semi-arid intermontane basin. Similarly, our terrestrial cosmogenic nuclide-derived data indicate an order-of-magnitude decrease in erosion rates at ca. 3 Ma, which suggests a causal link between the onset of uplift-induced semi-arid conditions and decreasing sediment flux into the basin. Ultimately, this dataset may enable a systematic investigation of the long-term causes and consequences of orogenic growth and hydrological changes on spatio-temporal erosion patterns in active mountain areas.

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

Experience of the Argentine Radioprotection Society in training in radiological protection

International Nuclear Information System (INIS)

Bomben, A.M.

2006-01-01

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

Occurrence and fate of pesticides in the Argentine stretch of the Paraguay-Paraná basin.

Science.gov (United States)

Etchegoyen, M A; Ronco, A E; Almada, P; Abelando, M; Marino, D J

2017-02-01

The Argentine stretch of the del Plata basin crosses regions devoted to extensive and intensive agriculture mostly with chemical pest control. The utilization of pesticides in the region has increased 900% in the last two decades associated with the introduction of biotech crops and direct-seeding techniques. Our objective was to study the occurrence, concentration, and fate of pesticides in surface water and bottom sediments of the principal tributaries and main watercourse of the Paraguay-Paraná River. We sampled 22 sites in the distal positions of the main affluents and main watercourse of the Paraná and report here results from two monitoring campaigns (2010-2012). Surface water and bottom sediments were analyzed according to standardized methods by matrix-solid-phase dispersion and liquid-liquid extraction, respectively. Twenty-three pesticide compounds were analyzed by gas chromatography. The results from both campaigns indicated a generalized but variable distribution in the concentrations detected throughout the basin. The ranges of total measured pesticide concentrations in water and sediments were, respectively, 0.004-6.62 μg/l and 0.16-221.3 μg/kg dry weight. Endosulfans, cypermethrin, and chlorpyrifos were ubiquitous compounds in both environmental compartments and quantitatively the most relevant. All concentrations detected in water were over the recommended guidelines for the protection of aquatic biota. The partitioning indicated a higher affinity for the sediments. Agricultural activity is the source of pesticide-pollution loads, transported by tributaries that reach the main watercourse and alter the quality of the aquatic ecosystem.

THE MEDIA COVERAGE OF “7D” IN THE ARGENTINE PRESS. APPLICATION OF GENERIC NEWS FRAMES TO MAJOR NATIONAL NEWSPAPERS

Directory of Open Access Journals (Sweden)

Natalia Aruguete

2014-06-01

Full Text Available This article seeks to compare the type of coverage that three Argentine newspapers (Clarín, La Nación and Página/12 performed of the so-called "7D" referring to December 7th, 2012, during the month before and the month after that date (from November 7th to January 7th. The Supreme Court of Argentina had established December 7th as a key step in the implementation process of Law of Audiovisual Communication Services (LSCA. From then on, the most important media conglomerate in the country, Grupo Clarín, would have to start the divestment process necessary to comply with the requirements of the new communication law, which had been enacted in 2009. The conceptual basis of the study is the Framing theory. Therefore, a deductive application of generic news frames defined in previous works will be made with the aim of putting in discussion if such frames are effectively adaptable to various topics throughout time and in different cultural contexts or if it is necessary to consider the distinctive features of these scenarios for the definition and persistence of the predominant frames in the news.

Preservation of primary information related to radiological protection and nuclear safety in the Argentine Nuclear Regulatory Authority

International Nuclear Information System (INIS)

Chahab, Martin

2008-01-01

The preservation of primary information related to Radiological Protection and Nuclear Safety in the Argentine Nuclear Regulatory Authority began as a need of and as significant contribution to the future activities of the institution. Since 2005 a high number of experts have retired from the organization and will continue to do so until 2010. Besides, the primary information that experts possess is technical information produced at the beginning of Argentina's regulatory activity in the 50 's. If this information on account of its relevance - could not be preserved properly or be made available to the future generation of scientists and technicians, such an issue could have a negative impact on the efficiency and effectiveness of the institution in the future. The methodology selected for the project comprises several stages. Overall, the first stage consists in identifying primary information and expert's explicit knowledge through interviews and personal consultations. The second stage consists in converting to digital format the documentation that experts have traditionally kept in paper format. The third stage deals with transferring to a new database the already digitalized information from the computers of experts who are about to retire. The final stage is based on managing this information by creating knowledge maps and socio-grams, experts personal Web sites and a database with a mega browser to make information readily accessible. During the early months of the project, 190 pages have on average been converted to digital format on a daily basis, the equivalent of around 8 MB of information. The men/hours employed for this task has been around 40 minutes per day. As time went by, the method turned more efficient and as a result, some 400 pages were converted to digital format on a daily basis, accounting for 16 MB of information. The men/hours employed for this task has been around 60 minutes per day. Up until mid 2008, more than 1,000 documents have been

Disabling injuries of the cervical spine in Argentine rugby over the last 20 years.

Science.gov (United States)

Secin, F P; Poggi, E J; Luzuriaga, F; Laffaye, H A

1999-02-01

To investigate the incidence and risk factors of disabling injuries to the cervical spine in rugby in Argentina. A retrospective review of all cases reported to the Medical Committee of the Argentine Rugby Union (UAR) and Rugby Amistad Foundation was carried out including a follow up by phone. Cumulative binomial distribution, chi 2 test, Fisher test, and comparison of proportions were used to analyse relative incidence and risk of injury by position and by phase of play (Epi Info 6, Version 6.04a). Eighteen cases of disabling injury to the cervical spine were recorded from 1977 to 1997 (0.9 cases per year). The forwards (14 cases) were more prone to disabling injury of the cervical spine than the backs (four cases) (p = 0.03). Hookers (9/18) were at highest risk of injury (p < 0.01). The most frequent cervical injuries occurred at the 4th, 5th, and 6th vertebrae. Seventeen of the injuries occurred during match play. Set scrums were responsible for most of the injuries (11/18) but this was not statistically significant (p = 0.44). The mean age of the injured players was 22. Tetraplegia was initially found in all cases. Physical rehabilitation has been limited to the proximal muscles of the upper limbs, except for two cases of complete recovery. One death, on the seventh day after injury, was reported. The forwards suffered a higher number of injuries than the backs and this difference was statistically significant. The chance of injury for hookers was statistically higher than for the rest of the players and it was particularly linked to scrummaging. However, the number of injuries incurred in scrums was not statistically different from the number incurred in other phases of play.

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.

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

Science.gov (United States)

Molares, Soledad; Ladio, Ana

2012-01-01

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. PMID:22194774

Dynamic infrared imaging for cancer: research and development in the Argentine Boron neutron capture therapy

International Nuclear Information System (INIS)

Santa Cruz, Gustavo A.; Bertotti, J.; Marin, J.

2009-01-01

In the framework of the Argentine Boron Neutron Capture Therapy (BNCT) project for treating metastatic cutaneous melanoma, we have initiated a research and development program aimed at obtaining a noninvasive methodology for following-up the treated patients. The technique is called Dynamic Infrared Imaging (DIRI) and comprises the acquisition of infrared images as a function of time of the anatomical part under study, when the region is subjected to a mild cold stress. Vascular, metabolic and regulating differences between normal and tumor tissues appear as differences in the pattern of temperature evolution, which can be correlated with the anatomical and functional aspects of both. Two patients enrolled in the BNCT protocol were studied with DIRI. A good spatial correlation between dose, temperature recovery velocity and skin reaction distributions was observed at the time of maximum expression of the erythematous reaction. Melanoma nodules appear as highly localized hyperthermic regions, surrounded and interconnected by elevated temperature areas. Their temperature recovery velocity after the thermal cold stress was substantially faster than that of normal skin with an appreciably large temperature difference (6 degreesC to 10 degreesC). These tissue differences can be related with the thermal conductivity and metabolic rate as explained by a simple one-directional heat transport model. Compared with other imaging modalities (CT and Doppler ultrasound) DIRI has had a similar ability for confirming the already diagnosed nodules. Together with the clinical observation, DIRI provides a potentially useful amount of information, at a competitive cost-benefit relationship suitable for performing a non-invasive functional assessment of this kind of cutaneous lesions and the evaluation of the acute skin reaction following irradiation. (author)

The Role of Advisory Committees on Regulatory functions: Argentine Experience

International Nuclear Information System (INIS)

Larcher, A. M.; Arias, C.; Kunst, J. J.; Perez, R. M.; Rudelli, M.

2004-01-01

The Argentine Nuclear Regulatory Authority (NRA) has appointed a consultants body that advises its Board of Directors on aspects related to authorization's granting to individuals for the use of radioisotopes and ionizing radiation in medicine, research and industry. Such committee, whose existence goes back to the year 1958, is integrated by prominent professionals knowledgeable about ionizing radiation and radioisotopes applications in the medical, biomedical and industrial fields, representing important professional associations or institutions related to the practices in question. Originally, the committee was conceived as a consultation body to fulfil two important functions: To produce, in a regular way, authorized opinions at experts level to settle down questions relative to the regulation of practices, new at that time in the country, and To submit to a peer review applications for individual authorization for different uses of ionizing radiation previously it's granting by the Regulatory Authority. In this paper the role of the advisory council is analyzed from a historical perspective trying to emphasize an outstanding aspect not sufficiently analyzed linked to the capability that advisory bodies, with representative users' presence, can reach in the interpretation of regulatory standards based on a performance philosophy. Such approach outlines the permanent dilemma about the performance level of the licensee that should satisfy the Regulatory Authority. Once the broad objectives of radiation protection has been defined professional criteria is required for applying them to different practices. Balance between flexibility and avoidance of excessive uncertainty is desirable. In the authors' opinion the inclusion, inside the regulator's structure of consultants bodies giving direct participation to qualified stakeholders, far from harming the necessary independence that should characterize the regulator, on the contrary, allows to have an excellent social

Food irradiation 2009; Irradiacion de alimentos: situacion en 2009

Energy Technology Data Exchange (ETDEWEB)

Narvaiz, Patricia [Comision Nacional de Energia Atomica, Ezeiza (Argentina). Gerecia de Aplicaciones y Tecnologia de Radiaciones

2009-01-15

Food irradiation principles; its main applications, advantages and limitations; wholesomeness, present activities at Ezeiza Atomic Centre; research coordinated by the International Atomic Energy Agency; capacity building; and some aspects on national and international regulations, standards and commercialization are briefly described. At present 56 countries authorize the consumption of varied irradiated foods; trade is performed in 32 countries, with about 200 irradiation facilities. Argentina pioneered nuclear energy knowledge and applications in Latin America, food irradiation included. A steady growth of food industrial volumes treated in two gamma facilities can be observed. Food industry and producers show interest towards new facilities construction. However, a 15 years standstill in incorporating new approvals in the Argentine Alimentary Code, in spite of consecutive request performed either by CNEA or some food industries restricts, a wider industrial implementation, which constitute a drawback to future regional commercialization in areas such as MERCOSUR, where Brazil since 2000 freely authorize food irradiation. Besides, important chances in international trade with developed countries will be missed, like the high fresh fruits and vegetables requirements United States has in counter-season, leading to convenient sale prices. The Argentine food irradiation facilities have been designed and built in the country. Argentina produces Cobalt-60. These capacities, unusual in the world and particularly in Latin America, should be protected and enhanced. Being the irradiation facilities scarce and concentrated nearby Buenos Aires city, the possibilities of commercial application and even research and development are strongly limited for most of the country regions. (author);Se describen someramente los principios del metodo de irradiaciones de alimentos; sus principales aplicaciones, ventajas y limitaciones, inocuidad; las actividades actuales en el Centro

Characteristics of the Institute of Technology 'Prof. Jorge A. Sabato'; Caracteristicas del Instituto de Tecnologia 'Prof. Jorga A. Sabato'

Energy Technology Data Exchange (ETDEWEB)

Galvele, Jose R [Comision Nacional de Energia Atomica, General San Martin (Argentina). Centro Atomico Constituyentes

2001-07-01

A historical survey is made of the educational and training activities in metallurgy and material sciences carried out by the CNEA since 1962, that were the origin of the 'Prof. Jorge A. Sabato' Institute. Today the Institute, created by the CNEA in association with the National University of General San Martin, is preparing Engineers in Material Sciences and Masters and Ph. D. in Material Sciences and Technology (Mention in Physics and Material). The curricula of the studies are described in detail. The Information Center annexed to the Institute is also described.

Characteristics of the Institute of Technology 'Prof. Jorge A. Sabato'

International Nuclear Information System (INIS)

Galvele, Jose R.

2001-01-01

A historical survey is made of the educational and training activities in metallurgy and material sciences carried out by the CNEA since 1962, that were the origin of the 'Prof. Jorge A. Sabato' Institute. Today the Institute, created by the CNEA in association with the National University of General San Martin, is preparing Engineers in Material Sciences and Masters and Ph. D. in Material Sciences and Technology (Mention in Physics and Material). The curricula of the studies are described in detail. The Information Center annexed to the Institute is also described

Implementation of the utilization program for the fuel elements of the Atucha I nuclear power plant

International Nuclear Information System (INIS)

Martin, H.R.; Serra, O.H.; Parker, Alejandro

1981-01-01

The programming operation for the use of the fuel elements in the Atucha-1 nuclear power plant was initially under the responsibility of the KWU Company, as part of the services rendered due for the manufacturing of said elements. This job was done with the help of the TRISIC program, developed in the early seventies by CNEA and SIEMENS staff. From april 21, 1979 on, CNEA took over the responsibility and strategy of the interchange of fuel elements. The several stages carried out for the implementation of this service are detailed. (M.E.L.) [es

Development of low-level environmental sampling capabilities for uranium at Brazilian and Argentine laboratories by ABACC

International Nuclear Information System (INIS)

Guidicini, Olga Mafra; Hembree Junior, Doyle M.; Carter, Joel A.; Hayes, Susan; Whitaker, Michael; Olsen, Khris

2003-01-01

The Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials (ABACC) with assistance from the U.S. Department of Energy (DOE) began a program to evaluate environmental sampling capabilities at laboratories in Argentina and Brazil in June 1998. The program included staff training conducted in South America and the United States. Several laboratory evaluation exercises were also conducted using standard swipe samples prepared by the International Atomic Energy Agency (IAEA) and a National Institute of Standards and Technology Standard Reference Material 1547, Peach Leaves. The results of these exercises demonstrated that several laboratories were capable of accurately determining the total uranium and uranium isotopic distribution in the peach leaves. To build on these successes, another exercise using standard swipe samples prepared by the IAEA was conducted. A total of 8 sets of 15 swipe samples were prepared and distributed to the six ABACC support laboratories and to two of DOE's Network of Analytical Laboratories (NWAL) that support IAEA's environmental sampling program Throughout this project, the ABACC laboratories have shown steady progress in contamination control and improvements to the accuracy and precision of their measurements. The results of the latest exercises demonstrate that ABACC now has support laboratories in both Argentina and Brazil that have the capability to measure both the amount and isotopic composition of uranium at levels expected in typical environmental samples (i.e., sub-microgram quantities). This presentation will discuss the final results for the exercise with uranium swipe samples and discuss future activities to develop measurement capabilities for total and isotopic plutonium in environmental samples. (author)

Sedimentology of middle ordovician carbonates in the Argentine precordillera: evidence of regional relative sea-level changes

Science.gov (United States)

Keller, M.; Eberlein, S.; Lehnert, O.

1993-07-01

The Las Aguaditas Formation in the Argentine Precordillera of San Juan is the only Ordovician carbonate sequence deposited on a slope. Spiculites, mudstones and calcisiltites represent the autochthonous sediments, characterized by a fine lamination, rare fossils and their dark colour. The pelagic fauna consists of rare radiolarians/calcispheres, trinucleid trilobites, graptolites and conodonts. The latter are typical of an open marine environment and proved a Llanvirn—Llandeilo age for the Las Aguaditas Formation. In the upper part of the succession there are several intercalations of megabreccias. Their thickness decreases from about 20 to 4 m towards the top of the formation, accompanied by an increasing amount of carbonate turbidites. The clasts of the breccias are derived from the slope as well as the platform. Each of the megabreccia horizons represents a system of channels, lobes and interchannel deposits, which together form a slope apron. On top of the lower breccia a small biostrome developed, where bryozoans and crinoids are preserved in an autochthonous position. Sedimentation of the Las Aguaditas Formation started with the drowning of the underlying carbonate platform (San Juan limestones). Near the Arenig-Llanvirn boundary, a rapid ecstatic sea-level rise led to the deposition of graptolitic black shales and mudstones. Upwards, allochthonous carbonates become increasingly abundant. The onset of megabreccia deposition coincides with a major relative sea-level fall, caused by block movements in connection with rifting. The subsequent transition from breccia formation towards turbiditic sedimentation corresponds to an environmental shift from the slope towards the toe of slope and basin and marks a renewed moderate sea-level rise.

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

Directory of Open Access Journals (Sweden)

Yael M Provecho

2014-10-01

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.

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

International Nuclear Information System (INIS)

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

1992-07-01

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)

Decommissioning and deactivation of nuclear facilities; Desmantelamiento y clausura de instalaciones nucleares

Energy Technology Data Exchange (ETDEWEB)

Anasco, Roberto; Harriague, Santiago; Hey, Alfredo M [Comision Nacional de Energia Atomica, Buenos Aires (Argentina). Gerencia de Tecnologia y Medio Ambiente; Fabbri, Silvio [Comision Nacional de Energia Atomica, General San Martin (Argentina). Centro Atomico Constituyentes; Garonis, Omar H [Comision Nacional de Energia Atomica, General San Martin (Argentina). Dept. de Gestion de Calidad

2003-07-01

The National Atomic Energy Commission (CNEA) is responsible for the decommissioning and deactivation of all relevant nuclear facilities in Argentina. A D and D Subprogram was created in 2000, within Technology Branch of the CNEA, in order to fulfill this responsibility. The D and D Subprogram has organized its activities in four fields: Planning; Technology development; Human resources development and training; International cooperation. The paper describes the work already done in those 4 areas, as well as the nuclear facilities existing in the country. Planning is being developed for the decommissioning of research reactors, beginning with RA-1, as well as for the Atucha I nuclear power station. An integral Management System has been developed, compatibilizing requirements from ISO 9001, ISO 14001, the national norm for Safety and Occupational Health (equivalent to BS 8800), and IAEA 50-SG Q series. Technology development is for the time being concentrated on mechanical decontamination and concrete demolition. A review has been made of technologies already developed both by CNEA and Nucleoelectrica Argentina S.A. (the nuclear power utility) in areas of chemical and electrochemical decontamination, cutting techniques and robotics. Human resources development has been based on training abroad in the areas of decontamination, cutting techniques, quality assurance and planning, as well as on specific courses, seminars and workshops. An IAEA regional training course on D and D has been given on April 2002 at CNEA's Constituyentes Atomic Center, with the assistance of 22 university graduates from 13 countries in the Latin American and Caribbean Region, and 11 from Argentina. CNEA has also given fellowships for PhD and Master thesis on the subject. International cooperation has been intense, and based on: - IAEA Technical Cooperation Project and experts missions; - Cooperation agreement with the US Department of Energy; - Cooperation agreement with Germany

Decommissioning and deactivation of nuclear facilities

International Nuclear Information System (INIS)

Anasco, Roberto; Harriague, Santiago; Hey, Alfredo M.; Fabbri, Silvio; Garonis, Omar H.

2003-01-01

The National Atomic Energy Commission (CNEA) is responsible for the decommissioning and deactivation of all relevant nuclear facilities in Argentina. A D and D Subprogram was created in 2000, within Technology Branch of the CNEA, in order to fulfill this responsibility. The D and D Subprogram has organized its activities in four fields: Planning; Technology development; Human resources development and training; International cooperation. The paper describes the work already done in those 4 areas, as well as the nuclear facilities existing in the country. Planning is being developed for the decommissioning of research reactors, beginning with RA-1, as well as for the Atucha I nuclear power station. An integral Management System has been developed, compatibilizing requirements from ISO 9001, ISO 14001, the national norm for Safety and Occupational Health (equivalent to BS 8800), and IAEA 50-SG Q series. Technology development is for the time being concentrated on mechanical decontamination and concrete demolition. A review has been made of technologies already developed both by CNEA and Nucleoelectrica Argentina S.A. (the nuclear power utility) in areas of chemical and electrochemical decontamination, cutting techniques and robotics. Human resources development has been based on training abroad in the areas of decontamination, cutting techniques, quality assurance and planning, as well as on specific courses, seminars and workshops. An IAEA regional training course on D and D has been given on April 2002 at CNEA's Constituyentes Atomic Center, with the assistance of 22 university graduates from 13 countries in the Latin American and Caribbean Region, and 11 from Argentina. CNEA has also given fellowships for PhD and Master thesis on the subject. International cooperation has been intense, and based on: - IAEA Technical Cooperation Project and experts missions; - Cooperation agreement with the US Department of Energy; - Cooperation agreement with Germany

The Information Center of the Argentine National Board of Nuclear Regulation (ENREN)

International Nuclear Information System (INIS)

Carregado, M.A.

1995-01-01

This paper is addressed particularly to the scientific community users and, as a whole, to any individual in society, whichever his profession or working environment, who is interested in getting acquainted of improving his/her knowledge in the areas of radiological protection and nuclear safety, as well as in other related areas of medicine, biology, engineering, mathematics and physics. The purpose of this paper is the diffusion of the broad spectrum of bibliography and the introduction of the technological-computerized media utilized as tools by the Argentine National Board of Nuclear Regulation in providing responses to a huge number of both internal and external requests for information. There is a large number of professionals and/or researchers who visit the facilities of our Information Center or who get in touch - through the post service, e-mail or telephone - consulting on the available material, either in paper (books, periodical publications, etc.) or in the form of microfilms, video, tapes, CD-ROM, etc. This paper is both descriptive and explanatory; a description is provided of the bibliographical material managed by the Information Center and a brief explanation is given on the techniques and methods used in providing the information requested by the users. Fundamentally, the Center's bibliographical material includes: periodical publications, books, reports, microfilms, etc., all of them related to radiological protection and nuclear safety. Data bases are available in CD-ROM, the most important one being the International Nuclear Information System (INIS) developed by the International Atomic Energy Agency (IAEA). The Center has also its own data bases, such as the GPRS (primary documents) and standards (both domestic and international), UNESCO's MicroIsis software is used for the Center's data bases: PERSIS (periodical publications), DOCSIS (books) and ARCAL (magazines from the Latin American territory). This paper will definitely serve as a safe

Cna 1 spent fuel element interim dry storage system thermal analysis

International Nuclear Information System (INIS)

Hilal, R. E; Garcia, J. C; Delmastro, D. F

2006-01-01

At the moment, the Atucha I Nuclear Power Plant (Cnea-I) located in the city of Lima, has enough room to store its spent fuel (Sf) in their two pools spent fuel until about 2015.In case of life extension a spend fuel element interim dry storage system is needed.Nucleolectrica Argentina S.A. (N A-S A) and the Comision Nacional de Energia Atomica (Cnea), have proposed different interim dry storage systems.These systems have to be evaluated in order to choose one of them.The present work's objective is the thermal analysis of one dry storage alternative for the Sf element of Cna 1.In this work a simple model was developed and used to perform the thermal calculations corresponding to the system proposed by Cnea.This system considers the store of sealed containers with 37 spent fuels in concrete modules.Each one of the containers is filled in the pool houses and transported to the module in a transference cask with lead walls.Fulfill the maximum cladding temperature requirement ( [es

Training in radionuclide methodology and applications in biomedical area

International Nuclear Information System (INIS)

Signoretta, C.

1998-01-01

Full text: Training in the field of radionuclide methodology and applications in biomedical area is important to assure that radionuclide should duly be used without risk for patients or for technicians manipulating them. The National Atomic Energy Commission (CNEA) from its creation is giving training courses of different technical levels to those working in science and technology. The Course on Radionuclide Methodology and application is the most continuous, varied and requested within CNEA. This is a basic course mainly given to Biochemistry and Medicine. Its goal is to give both theoretical and practical knowledge for use and application of radionuclides bearing in mind radiological safety regulations. Personnel from CNEA and Nuclear Regulatory Authority (ARN) carry out teaching. On the other hand, a course for Technicians in Nuclear Medicine is giving supplying knowledge in this field, as well as expertise and practice to attend a responsible Medical Doctor. These curses comprise radionuclide methodology, anatomy, physiology, instrumentation and practical applications in Nuclear Medicine. Statistics concerning these course are giving. (author) [es

Progress in converting 99Mo production from high-to-low-enriched uranium - 1999

International Nuclear Information System (INIS)

Snelgrove, J.L.; Vandegrift, G.F.; Conner, C.; Wiencek, T.C.; Hofman, G.L.

1999-01-01

Over this past year, extraordinary progress has been made in executing our charter to assist in converting Mo-99 production worldwide from HEU to LEU. Building on the successful development of the experimental LEU-foil target, we have designed a new, economical irradiation target. We have also successfully demonstrated, in collaboration with BATAN in Indonesia, that LEU can be substituted for HEU in the Cintichem target without loss of product yield or purity; in fact, conversion may make economic sense. We are interacting with a number of commercial producers - we have begun active collaborations with the CNEA and ANSTO; we are working to define the scope of collaborations with MDS Nordion and Mallinckrodt; and IRE has offered its services to irradiate and test a target at the appropriate time. Conversion of the CNEA process is on schedule. Other papers presented at this meeting will present specific results on the demonstration of the LEU-modified Cintichem process, the development of the new target, and progress in converting the CNEA process. (author)

Fundamentos para la clasificación del trigo argentino por calidad: efectos del cultivar, la localidad, el año y sus interacciones Bases for the segregation of Argentine bread wheat by quality: effects of cultivar, location, year and their interactions

Directory of Open Access Journals (Sweden)

P.E. Abbate

2010-06-01

Full Text Available Regularmente se analiza la producción triguera argentina para conocer su calidad industrial, pero no se comparan formalmente los efectos del cultivar, localidad, año y sus interacciones. El objetivo de este estudio fue cuantificar la magnitud de los efectos de esos factores. Durante tres campañas se realizaron experimentos, en cuatro localidades con ocho cultivares. Se evaluaron peso medio del grano, peso hectolítrico, rendimiento de harina, gluten húmedo, gluten seco, gluten index, concentración de proteína, variables alveográficas, absorción de agua y volumen de pan. Se calculó un índice para definir grupos de calidad. Para comparar el efecto de cada factor, se calculó su coeficiente de variación. Para la mayoría de las variables, los factores presentaron diferencias significativas (P=0,05, los efectos de localidad y año fueron tanto o más importantes que el de cultivar, y la interacción localidad × año fue la de mayor magnitud. La clasificación en grupos de calidad fue afectada por la localidad y el efecto de la localidad cambió entre años. Los resultados justifican incluir la localidad para definir protocolos de producción y para clasificar cultivares y la producción triguera argentina.Regularly, quality analyses of Argentine wheat production are performed in order to know its industrial quality. These analyses are insufficient to compare effects of cultivar, location, year and their interactions. The aim of this work is to quantify the effects of these factors. Eight cultivars were grown in four Argentine locations during three cropping seasons. Ten quality traits were evaluated: mean weight of grain, hectolitric weight, flour yield, wet gluten, dry gluten, gluten index, protein concentration, alveographic variables, water absorption, bread volume. A wheat quality index was calculated and quality groups were established. Coefficient of variation was calculated in order to compare the effect of each factor. For most

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.

Adaptation to Interannual and Interdecadal Climate Variability in Agricultural Production Systems of the Argentine Pampas

Science.gov (United States)

Podestá, G. P.; Bert, F.; Weber, E.; Laciana, C.; Rajagopalan, B.; Letson, D.

2007-05-01

Agricultural ecosystems play a central role in world food production and food security, and involve one of the most climate-sensitive sectors of society-agriculture. We focus on crop production in the Argentine Pampas, one of the world's major agricultural regions. Climate of the Pampas shows marked variability at both interannual and decadal time scales. We explored the scope for adaptive management in response to climate information on interannual scales. We show that different assumptions about what decision makers are trying to achieve (i.e., their objective functions) may change what actions are considered as "optimal" for a given climate context. Optimal actions also were used to estimate the economic value of forecasts of an ENSO phase. Decision constraints (e.g., crop rotations) have critical influence on value of the forecasting system. Gaps in knowledge or misconceptions about climate variability were identified in open-ended "mental model" interviews. Results were used to design educational interventions. A marked increase in precipitation since the 1970s, together with new production technologies, led to major changes in land use patterns in the Pampas. Continuous cropping has widely replaced agriculture-pasture rotations. Nevertheless, production systems that evolved partly in response to increased rainfall may not be viable if climate reverts to a drier epoch. We use historical data to define a range of plausible climate trajectories 20-30 years hence. Regional scenarios are downscaled using semi-parametric weather generators to produce multiple realizations of daily weather consistent with decadal scenarios. Finally, we use the synthetic climate, crop growth models, and realistic models of decision-making under risk to compute risk metrics (e.g., probability of yields or profits being below a threshold). Climatically optimal and marginal locations show differential responses: probabilities of negative economic results are much higher in currently

2010 national progress report on R and D on LEU fuel and target technology in Argentina

International Nuclear Information System (INIS)

Balart, S.; Blaumann, H.; Cristini, P.; Gonzalez, A.G.; Gonzalez, R.; Hermida, J.D.; Lopez, M.; Mirandou, M.; Taboada, H.

2010-01-01

Since last RRFM meeting, CNEA has deployed several related tasks. The RA-6 MTR type reactor, converted its core from HEU to a new LEU silicide one is scaling up the power, according to a protocol requested by the national regulatory body, ARN. CNEA is deploying an intense R and D activity to fabricate both dispersed U-Mo (Al-Si matrix and Al cladding) and monolithic (Zry-4 cladding) miniplates to develop possible solutions to VHD dispersed and monolithic fuels technical problems. Some monolithic 58% enrichment U8%Mo and U10%Mo are being delivered to INL-DoE to be irradiated in ATR reactor core. A conscientious study on compound interphase formation in both cases is being carried out. CNEA, a worldwide leader on LEU technology for fission radioisotope production is providing Brazil with these radiopharmaceutical products and Egypt and Australia with the technology through 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) Fabrication of a LEU dispersed U-Mo fuel prototype following the recommendations of the IAEA's Good Practices document, to be irradiated in a high flux reactor in the frame of the ARG/4/092 IAEA's Technical Cooperation project. 2) Development of LEU very high density monolithic and dispersed U-Mo fuel plates with Zry-4 or Al cladding as a part of the RERTR program. 3) Optimization of LEU target and radiochemical techniques for radioisotope production. (author)

Effect of seasonality on chemical composition and antibacterial and anticandida activities of Argentine propolis. Design of a topical formulation.

Science.gov (United States)

Isla, María Inés; Dantur, Yanina; Salas, Ana; Danert, Carolina; Zampini, Catiana; Arias, Myriam; Ordóñez, Roxana; Maldonado, Luis; Bedascarrasbure, Enrique; Nieva Moreno, María Inés

2012-10-01

The effect of seasonality on Argentine propolis collected during one year on its phenolic and flavonoid content and on the growth of Gram-positive and Gram-negative antibiotic resistant bacteria and Candida species was evaluated. Extracts of propolis samples collected in the summer and spring showed higher phenolic and flavonoid contents than the samples collected in other seasons (5.86 to 6.06 mg GAE/mL and 3.77 to 4.23 mg QE/mL, respectively). The propolis collected in summer and autumn showed higher antibacterial activity (30 microg/mL) than the other samples (MIC values between 30 and 120 microg/mL). No antibacterial activity was detected against Gram-negative bacteria. Also, these extracts were able to inhibit the development of five Candida species, with MFC values of 15-120 microg/mL. Pharmaceutical formulations containing the more active propolis extract were prepared. The hydrogel of acrylic acid polymer containing summer propolis extract as an antimicrobial agent showed microbiological, physical and functional stability during storage for 180 days. The pharmaceutical preparation, as well as the propolis extracts, was active against Candida sp. and antibiotic-multi-resistant Gram-positive bacteria. These results reveal that propolis samples collected by scraping in four seasons, especially in summer in Calingasta, San Juan, Argentina, can be used to obtain tinctures and hydrogels with antibacterial and antimycotic potential for topical use.

Technologic spin-off from CNEA's activities

International Nuclear Information System (INIS)

Belinco, Cesar G.

2001-01-01

An analysis is made of the spin-off of technology from the nuclear activities in Argentina. Several examples are mentioned in fields such as material sciences, non-destructive testing, forensic research, space activities, instrumentation as well as in environmental studies

Crucero ARA General Belgrano in memóriam. Linajes político-navales en las memorias de Malvinas

Directory of Open Access Journals (Sweden)

Rosana Guber

2014-06-01

This paper depicts the foundations of the early postwar Argentine naval memories of the Anglo-Argentine Malvinas/Falklands War. During the tenth anniversary of the sinking of the Belgrano Cruiser (May 2nd 1982, the greatest Argentine disaster is tied to two events in Argentine politics in which the Navy was involved. Such an articulation deploys the national bases underlying the memories of this international war.

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.

PRESS AND SOCIAL NETWORKING SERVICES IN THE INTERNET: APPROACHES TO THE RELATIONS OF TWO ARGENTINE ONLINE NEWSPAPERS WITH FACEBOOK AND TWITTER

Directory of Open Access Journals (Sweden)

Natalia Raimondo Anselmino

2013-12-01

Full Text Available This article describes the incorporation of the social networks resources on Internet into digital interfaces of the two main Argentine newspapers, Clarín and La Nación, as well as the ways in which these online newspapers manage and use their official accounts on Facebook (FB and Twitter (TW. Such reflections are part of the first stage of a research project which aims to understand the relationship established, at present, between digital media and social networking, to account for the impact of the latter both the link to the press with his readership as in the press-public sphere relationship. As we have seen until now, these observed online newspapers use their official accounts on FB and TW for several purposes: to get viral spread of content; to establish a direct contact with the public; to get the audience involved and encourage their participation; to consolidate their own positions into the social networks; and to get users to control the quality of his speeches on the Internet. Besides, the incorporation of the social networks resources on these online newspapers would impact, specially, on news circulation process since a piece of news is no longer a stable unit and gets modified as the story travels through Internet social networks.

Press and social networking services in the internet: approaches to the relations of two Argentine online newspapers with Facebook and Twitter

Directory of Open Access Journals (Sweden)

Natalia Raimondo Anselmino

2013-12-01

Full Text Available This article describes the incorporation of the social networks resources on Internet into digital interfaces of the two main Argentine newspapers, Clarín and La Nación, as well as the ways in which these online newspapers manage and use their official accounts on Facebook (FB and Twitter (TW. Such reflections are part of the first stage of a research project which aims to understand the relationship established, at present, between digital media and social networking, to account for the impact of the latter both the link to the press with his readership as in the press-public sphere relationship. As we have seen until now, these observed online newspapers use their official accounts on FB and TW for several purposes: to get viral spread of content; to establish a direct contact with the public; to get the audience involved and encourage their participation; to consolidate their own positions into the social networks; and to get users to control the quality of his speeches on the Internet. Besides, the incorporation of the social networks resources on these online newspapers would impact, specially, on news circulation process since a piece of news is no longer a stable unit and gets modified as the story travels through Internet social networks.

As origens da crise argentina: uma sugestão de interpretação The origins of the Argentine crisis: a suggested interpretation

Directory of Open Access Journals (Sweden)

Andrés Ferrari

2008-04-01

Full Text Available O presente trabalho busca resgatar as origens históricas da crise argentina. Argumentamos que o modelo de liberalização econômica subjacente ao Plano de Conversibilidade tem suas raízes na formação da economia agroexportadora, que entre o final do século XIX e primeiras décadas do século XX deu as bases para a construção de um país próspero. Por outro lado, a década de 1990 introduziu uma heterogeneidade social que não guarda relação estreita com as principais heranças do modelo liberal anterior.In this paper we look for the historical genesis of the Argentine crisis. We argue that the economic liberalization model, implicit of the Convertibility Plan, has its roots in establishment of the agro-exporting economy on which, between the end of the 19th century and the first decades of the 20th century, a prosperous country was formed. On the other hand, the 1990 decade introduced a social heterogeneity that holds no relation to the main heritage of the previous liberal model.

Linking in situ bioassays and population dynamics of macroinvertebrates to assess agricultural contamination in streams of the Argentine pampa.

Science.gov (United States)

Jergentz, S; Pessacq, P; Mugni, H; Bonetto, C; Schulz, R

2004-10-01

The two local crustacean species Hyalella curvispina and Macrobrachium borelli were chosen for assessment of agricultural contamination in two streams (Horqueta and Maguire) in the Argentine pampa. In parallel with in situ bioassays of both species, the population dynamics and the organismic drift of H. curvispina were investigated throughout the main period of insecticide application, from December 2001 to March 2002. In Maguire none of the current-use insecticides (chlorpyrifos, alpha-cypermethrin, and endosulfan) in question were detected throughout the sampling period. During 1-week intervals with no contamination by insecticides the survival rate of H. curvispina varied between 77 +/- 6% (+/- SE, n = 4) and 85 +/- 3%. In Horqueta during a week with a peak insecticide contamination of 64 microg/kg chlorpyrifos in the suspended particles, a mortality of 100% was observed in the in situ bioassays for both species, H. curvispina and M. borelli. At the same time, in Maguire H. curvispina showed reduced survival rates of 23 +/- 5% and 25 +/- 18% at the two sites, while the survival rate of M. borelli was 60 +/- 11% upstream and 93 +/- 5% downstream, below a wetland. During the period with 100% mortality of H. curvispina in Horqueta, the population density of this species decreased correspondingly, from 106 +/- 26 to 0 individuals/m(2). We conclude that in situ bioassays can be successfully linked to in-stream population dynamics for the same species and that this link is very useful for interpreting causal exposure-effect relationships.

Grafting of Porous Polymers for Biological Applications

Energy Technology Data Exchange (ETDEWEB)

Smolko, E. E. [Comisión Nacional de Energía Atómica, Buenos Aires (Argentina); Grasselli, M. [Dpto. LaMaBio, Dpto. de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal, Buenos Aires (Argentina)

2009-07-01

Research on application of radiation processing to polymers is mainly focused by the National Atomic Commission (CNEA). The Agricultural and Industrial Applications Laboratory Unit operates at the Ezeiza Atomic Center since the end of 1980s. Since 1997 a new research group headed by Dr. O. Cascone and Dr. M. Grasselli, devoted to downstream processing of proteins from the University of Buenos Aires, was involved in the implementation of grafting techniques in collaboration with Dr. E. Smolko from CNEA. In 1999 Dr. M. Grasselli moved to the Universidad Nacional de Quilmes where he continued working on application of gamma radiation to materials for biotechnological process. (author)

Grafting of Porous Polymers for Biological Applications

International Nuclear Information System (INIS)

Smolko, E.E.; Grasselli, M.

2009-01-01

Research on application of radiation processing to polymers is mainly focused by the National Atomic Commission (CNEA). The Agricultural and Industrial Applications Laboratory Unit operates at the Ezeiza Atomic Center since the end of 1980s. Since 1997 a new research group headed by Dr. O. Cascone and Dr. M. Grasselli, devoted to downstream processing of proteins from the University of Buenos Aires, was involved in the implementation of grafting techniques in collaboration with Dr. E. Smolko from CNEA. In 1999 Dr. M. Grasselli moved to the Universidad Nacional de Quilmes where he continued working on application of gamma radiation to materials for biotechnological process. (author)

An outline of the application of an environmental management system to the PRAMU (Uranium Mining Environmental Restitution Project)

International Nuclear Information System (INIS)

Smetniansky de De Grande, Nelida; Avila Cadena, Guadalberto; Cardozo, Damian

2000-01-01

In Argentina the National Atomic Energy Commission (CNEA) has the responsibility to restore uranium mining facilities, when milling operations have been shut down. To carry out this clean up actions CNEA created the Project for Uranium Mining Environmental Restoration (PRAMU in Spanish). To take into account the environmental aspects of the restoration activities, the PRAMU includes in its management an Environmental Management System (SGA in Spanish), which is of central importance in determining the environmental policy, objectives and targets. In this work a general view of the Environmental Management System is presented and an example of one of the environmental programs to be implemented is detailed. (author)

An outline of the application of an environmental management system to the PRAMU (Uranium Mining Environmental Restitution Project); Ejemplo de aplicacion de un sistema de gestion ambiental en el PRAMU: Proyecto de Restitucion Ambiental de la Mineria del Uranio

Energy Technology Data Exchange (ETDEWEB)

Smetniansky de De Grande, Nelida; Avila Cadena, Guadalberto; Cardozo, Damian [Comision Nacional de Energia Atomica, Buenos Aires (Argentina). Unidad Ejecutora del Proyecto PRAMU

2000-07-01

In Argentina the National Atomic Energy Commission (CNEA) has the responsibility to restore uranium mining facilities, when milling operations have been shut down. To carry out this clean up actions CNEA created the Project for Uranium Mining Environmental Restoration (PRAMU in Spanish). To take into account the environmental aspects of the restoration activities, the PRAMU includes in its management an Environmental Management System (SGA in Spanish), which is of central importance in determining the environmental policy, objectives and targets. In this work a general view of the Environmental Management System is presented and an example of one of the environmental programs to be implemented is detailed. (author)

Training courses for Latin American human resources in subjects related to RERTR program

International Nuclear Information System (INIS)

Perez, T.E.; Harriague, S.; Perez, E.E.

1987-01-01

Between 1984 and 1986, the Atomic Energy Commission of Argentina organized three post-graduate courses on research reactors, aimed at the Latin American region. Twenty one university graduates from Brazil, Colombia, Chile, Mexico, Peru, Uruguay and Venezuela, and six from Argentina, attended the courses. Lecturers were in all cases staff members of CNEA. These activities of Manpower Development in the Latin American Region are part of an overall program starting in the early sixties at CNEA's Development Branch. The interest shown by many Latin American countries in these courses, the technical training received and the technical cooperation established among the participants, are taken as a measure of the success obtained. (Author)

Differences in production, carbon stocks and biodiversity outcomes of land tenure regimes in the Argentine Dry Chaco

Science.gov (United States)

Marinaro, Sofía; Grau, H. Ricardo; Gasparri, Néstor Ignacio; Kuemmerle, Tobias; Baumann, Matthias

2017-04-01

Rising global demand for agricultural products results in agricultural expansion and intensification, with substantial environmental trade-offs. The South American Dry Chaco contains some of the fastest expanding agricultural frontiers worldwide, and includes diverse forms of land management, mainly associated with different land tenure regimes; which in turn are segregated along environmental gradients (mostly rainfall). Yet, how these regimes impact the environment and how trade-offs between production and environmental outcomes varies remains poorly understood. Here, we assessed how biodiversity, biomass stocks, and agricultural production, measured in meat-equivalents, differ among land tenure regimes in the Dry Chaco. We calculated a land-use outcome index (LUO) that combines indices comparing actual vs. potential values of ‘preservation of biodiversity’ (PI), ‘standing biomass’ (BI) and ‘meat production’ (MI). We found land-use outcomes to vary substantially among land-tenure regimes. Protected areas showed a biodiversity index of 0.75, similar to that of large and medium-sized farms (0.72 in both farming systems), and higher than in the other tenure regimes. Biomass index was similar among land tenure regimes, whereas we found the highest median meat production index on indigenous lands (MI = 0.35). Land-use outcomes, however, varied more across different environmental conditions than across land tenure regimes. Our results suggest that in the Argentine Dry Chaco, there is no single land tenure regime that better minimizes the trade-offs between production and environmental outcomes. A useful approach to manage these trade-offs would be to develop geographically explicit guidelines for land-use zoning, identifying the land tenure regimes more appropriate for each zone.

Consumo de álcool e violência entre adolescentes argentinos Alcohol consumption and violence among Argentine adolescents

Directory of Open Access Journals (Sweden)

Mariaelena Pierobon

2013-02-01

Full Text Available OBJETIVO: Este estudo investigou a associação entre álcool e violência na população de jovens argentinos. MÉTODOS: Dados da Global School-based Student Health Survey (GSHS de 2007, uma pesquisa representativa em termos nacionais com alunos do ensino médio, foram examinados utilizando-se modelos de regressão logística ajustados por idade. RESULTADOS: Dos 1328 alunos participantes entre 13 e 15 anos de idade, 51,9% declararam ter consumido álcool no último mês, com taxas mais elevadas entre meninos (p = 0,04 e alunos mais velhos (p OBJECTIVE: This study investigated the association between alcohol and violence among Argentine youth. METHODS: Data from the 2007 Argentina Global School-based Student Health Survey (GSHS, a nationally representative survey of middle school students, were examined using age-adjusted logistic regression models. RESULTS: Of the 1,328 participating students aged 13 to 15 years old, 51.9% reported drinking alcohol in the previous month, with higher rates among males (p = 0.04 and older students (p < 0.01. Both male and female drinkers were nearly twice as likely as non-drinkers to report being physically attacked, being in a physical fight, and having thoughts about self-directed violence. Among drinkers, those who reported poor mental health, were victims of bullying, used tobacco or drugs, or skipped school without permission were approximately twice as likely as other drinkers to have engaged in violent activities. CONCLUSION: Public health interventions targeting violence among young adolescents should be developed in combination with alcohol education programs.

Operators retraining in RA-1

International Nuclear Information System (INIS)

Pereira, R; Daoud, A

2012-01-01

The nuclear activity in Argentina has its foundational milestone in the creation of the Comision Nacional de EnergIa Atomica in 1950. Achievements since then, linked to the area of nuclear reactors and nuclear fuel materials, fuel cycle facilities and the applications of nuclear technology in medicine, industry, agriculture, food preservation, environmental studies and many others, have relied on personnel trained in this specific technology in both professional and technical level. This training has been done in most cases in the exclusive scope of CNEA. Eventually CNEA has been linked with the University to ensure that personnel training concerned to work done in the nuclear field had guarantees of formality and excellence. The creation of the Instituto de Tecnologia Nuclear Dan Beninson that, under an agreement with the Universidad Nacional de General San Martin, has set up an enabling environment for the training of professionals and university technicians to serve with the multiple and growing use of this technology. On the other hand the Institute has been issuing, along with its careers, specialized courses that, in some cases, have been requested by CNEA's nuclear installations and companies related to the nuclear sector. In particular, the Specialization in Nuclear Reactors and its Fuel Cycle (ERCC) and the Courses of Introduction to Nuclear Technology-Complementary training for Installations Personnel Class I (CI-CC), this last, recognized by the ARN as a requirement for applying to the individual licensing examination, providing work experience in the RA-1 reactor among which we can find commissioning, control rods calibration by various methods and calculations of reactivity. With this practical framework developed in the RA-1 and the academic support provided by the Instituto de Tecnologia Nuclear Dan Beninson it was developed a training program for nuclear reactors operators. Let us stress that this research reactor has been forming generations

Experience in construction and operation of HWR plants in Argentina

International Nuclear Information System (INIS)

Madero, C.C.; Cosentino, J.O.

1982-01-01

''ATUCHA I'', the first nuclear power plant in Argentina, is in commerical operation since 1974 with a high capacity factor. The reactor is based on the MZFR prototype designed by SIEMENS with natural uranium and heavy water and PWR technic. The plant was built by SIEMENS on a turnkey contract and was rated 340 MWe. The offer presented in that opportunity by KWU was based on two reactors (ATUCHA I type) inside one single containment, due to the limitation in power of the reactor. Subsequent changes in the nature of the contract resulted in an active participation of CNEA engineering groups in the erection and commissioning of the reactor. In 1978 the national government approved a nuclear power plan to install four 600 MWe HWR plants until 1995. To start implementing this program, CNEA called for tenders for the supply of components and services for the ATUCHA II plant, in connection with the establishment of a local engineering company and the supply and construction of a heavy water production plant. In 1980 a contract was signed with KWU and the local company ENACE was formed to act as architect engineer and site coordinator. The plant will be located in the ATUCHA I site and the reactor will be similar but double in power to that one. Following the schedule of the nuclear plan, CNEA has just started preliminary studies for the next nuclear plant. ENACE will be responsible for the preparation of an offer for an ATUCHA reactor type. Local engineering and manufacturing firms, upon request and coordination from CNEA, and evaluating the local capacity to participate in the design and construction of a CANDU type nuclear plant. Final decision on this fourth nuclear plant in Argentina will be taken middle 1983. (J.P.N.)

Results of the argentinian intercomparison on internal dosimetry 2014. Measurement of thyroid burden

International Nuclear Information System (INIS)

Rojo, A.M.; Puerta, N.; Gossio, S.; Gómez Parada, I.

2015-01-01

Internal dosimetry intercomparisons are essential for the verification of the capability to perform direct measurements of “1”3”1I thyroid burden and the expertise in the interpretation of these data for dose assessment. To that aim, in 2014 the National Intercomparison Exercise was organized and coordinated by the Internal Dosimetry Laboratory of the Autoridad Regulatoria Nuclear (ARN) of Argentina. The exercise counted with the participation of six internal dosimetry services: nuclear power plants (NA-SA CNA and NA-SA CNE), CNEA Atomic Centres: Bariloche (CAB) and Ezeiza (CAE), Roffo Institute (UBA – CNEA) and ARN. This report shows a complete analysis of the participant’s results in this exercise. (authors) [es

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.

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. © 2016 Wiley Periodicals, Inc.

Are economic evaluations and health technology assessments increasingly demanded in times of rationing health services? The case of the Argentine financial crisis.

Science.gov (United States)

Rubinstein, Adolfo; Belizán, María; Discacciati, Vilda

2007-01-01

After 4 years of deepening recession, Argentina's economy plummeted after default in 2002. This crisis critically affected health expenditures and triggered acute rationing. Our objective was to explore health decision-makers' knowledge and attitudes about economic evaluations (EE) and whether health technology assessment (HTA) were increasingly used for decision making. A qualitative design based on semistructured interviews and focus groups was used to explore how decision makers belonging to different health sectors implement resource allocation decisions. Informants were mostly unaware of EE. The most important criteria mentioned to adopt a treatment were evidence of effectiveness, social/stakeholder demand, or resource availability. Despite general positive attitudes about EE, knowledge was rather limited. Although cost considerations were widely accepted by purchasers and managers, clinicians argued about these issues as interfering with the doctor-patient relationship. Other important perceived barriers to HTA use were lack of confidence in the transferability of studies conducted in developed countries and institutional fragmentation of the Argentine healthcare system. The new macroeconomic context was cited as a justification of implicit rationing measures. Although explicit priority setting was implemented by many purchasers and managers, HTA was not used to improve technical and/or allocative efficiency. The crisis seems to be a strong incentive to extend the use of HTA in Argentina, provided decision makers are aware as well as involved in the generation of local studies.

Paleogeographic significance of Clavohamulus hintzei Miller (Conodonta) and other Ibexian conodonts in an early Paleozoic carbonate platform facies of the Argentine Precordillera

Science.gov (United States)

Lehnert, O.; Miller, J.F.; Repetski, J.E.

1997-01-01

Pre-Tremadocian conodonts and trilobites and Tremadocian conodonts are reported from the Cambrian and Ordovician La Silla Formation in the Cerro La Silla section in east-southeast Ja??chal, San Juan Province, Argentina. A shallow marine conodont fauna contains elements of Clavohamulus hintzei Miller, a common species in North America, but reported for the first time from the early Paleozoic platform carbonates of the western Argentine Precordillera. The presence of this species suggests a correlation with the Clavohamulus hintzei conodont subbiozone of the Cordylodus intermedius conodont biozone in North America, considered Early Ordovician (Skullrockian Stage, Ibexian Series) in North America, but by South American and European standards, this biozone would be of latest Cambrian age. C. hintzei and associated conodonts of the La Silla Formation are typical of the tropical faunas of the North American Midcontinent Faunal Province; Late Cambrian trilobites from lower in the formation also are typical North American taxa. The presence of these faunas in the platform carbonates is consistent with plate reconstructions suggesting that the Precordillera was in a tropical or subtropical position close to Laurentia during the late Precambrian and early Paleozoic. These new paleontological data provide one more argument for recent models of the Precordillera as a displaced terrane derived from the Ouachita Embayment at the southern margin of Laurentia.

Morphological variability, spatial distribution and abundance of Helicostomella species (Ciliophora: Tintinnina in relation to environmental factors (Argentine shelf; 40-55°S

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Luciana F. Santoferrara

2009-12-01

Full Text Available For the first time a taxonomic and ecological study of species belonging to Helicostomella was performed over a mesoscale spatial distribution by examining ca. 3000 loricae collected in Argentine shelf waters during the austral autumn. Microscopic and statistical analysis revealed that the general shape and the oral diameter remained practically constant in the whole area surveyed, despite a continuous length fluctuation of ca. 300 µm, which includes the entire range present in eight previously reported species. Consequently, we consider that the genus may be represented only by H. subulata, whose strong fluctuations in length (mostly attributed to an increase in the collar length, density and biomass seem to respond to temperature, food availability and front-related processes. In Buenos Aires coastal waters associated with a quasi permanent estuarine front (40-40.5°S, mixed conditions would favour moderate abundances of long loricae, whereas in northern (42.5-45.5°S and southern (46-54.5°S Patagonian waters, high (103 ind. L-1 and low (< 5 ind. L-1 densities of short loricae seem to be a consequence of stratification and encystment, respectively. The non-occurrence of the species at 41-42°S, together with a three-fold reduction in length-related parameters between specimens from Buenos Aires and Patagonian waters, suggests a disjunct distribution.

CNEA - Centro Atómico Bariloche

Science.gov (United States)

en Ciencia y Tecnología Formación de Recursos Humanos de alto nivel Mapa del sitio Contacto Buscar en la formación de recursos humanos. Leer más: Centro atómico bariloche Próximos Eventos

Is the Invasive Species Listronotus bonariensis (Kuschel) (Coleoptera: Curculionidae) (Argentine Stem Weevil) a Threat to New Zealand Natural Grassland Ecosystems?

Science.gov (United States)

Barratt, Barbara I P; Barton, Diane M; Philip, Bruce A; Ferguson, Colin M; Goldson, Stephen L

2016-01-01

Listronotus bonariensis (Argentine stem weevil) is a stem-boring weevil that has become a major pasture pest in New Zealand, and cool climate turf grass in Australia. This species is also frequently found in native tussock grassland in New Zealand. Laboratory and field trials were established to determine the risk posed to both seedlings and established plants of three native grass species compared to what happens with a common host of this species, hybrid ryegrass (L. perenne X L. multiflorum). Adult weevil feeding damage scores were higher on Poa colensoi and Festuca novae-zelandiae than Chionochloa rigida. Oviposition was lower on P. colensoi than hybrid ryegrass, and no eggs were laid on F. novae-zelandiae. In field trials using the same four species established as spaced plants L. bonariensis laid more eggs per tiller in ryegrass in a low altitude pasture site than in ryegrass in a higher altitude site. No eggs were found on the three native grass species at the tussock sites, and only low numbers were found on other grasses at the low altitude pasture site. Despite this, numbers of adult weevils were extracted from the plants in the field trials. These may have comprised survivors of the original weevils added to the plants, together with new generation weevils that had emerged during the experiment. Irrespective, higher numbers were recovered from the tussock site plants than from those from the pasture site. It was concluded that L. bonariensis is likely to have little overall impact, but a greater impact on native grass seedling survival than on established plants.

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

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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

A Small-Animal Irradiation Facility for Neutron Capture Therapy Research at the RA-3 Research Reactor

Energy Technology Data Exchange (ETDEWEB)

Emiliano Pozzi; David W. Nigg; Marcelo Miller; Silvia I. Thorp; Amanda E. Schwint; Elisa M. Heber; Veronica A. Trivillin; Leandro Zarza; Guillermo Estryk

2007-11-01

The National Atomic Energy Commission of Argentina (CNEA) has constructed a thermal neutron source for use in Boron Neutron Capture Therapy (BNCT) applications at the RA-3 research reactor facility located in Buenos Aires. The Idaho National Laboratory (INL) and CNEA have jointly conducted some initial neutronic characterization measurements for one particular configuration of this source. The RA-3 reactor (Figure 1) is an open pool type reactor, with 20% enriched uranium plate-type fuel and light water coolant. A graphite thermal column is situated on one side of the reactor as shown. A tunnel penetrating the graphite structure enables the insertion of samples while the reactor is in normal operation. Samples up to 14 cm height and 15 cm width are accommodated.

Comparison of theoretical and experimental determinations of calibration factors for cylindrical and parallel plates ionization chambers

International Nuclear Information System (INIS)

Vallejos, Matias; Montano, Gustavo A.; Stefanic, Amalia; Saravi, Margarita

2009-01-01

The Ionizing Radiation Dosimetry Section of CNEA is the National Laboratory of Dosimeter Reference, having been designated by the National Institute of Industrial Technology (INTI, deposit taker by Law 19,511/72 of the national standards for metrology) for the safekeeping and operation of the national standards for dosimetry (Agreement INTI - CNEA, February 2004). From their creation, the CRRD provides, among other services, the calibration of dosemeters used in radiotherapy, in terms of Kerma in air, and since year 2002 provides calibration in terms of absorbed dose in water. In this work, those elements appear whereupon it counts the laboratory and that they tend to consolidate the securing of the quality of the results obtained in the calibrations of dosemeters. (author)

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

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

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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.

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

Science.gov (United States)

Sáez, Agustín; Sabatino, Malena; Aizen, Marcelo A

2012-01-01

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.

Knowledge management in the Argentine Nuclear Regulatory Authority; La gestion del conocimiento en la Autoridad Regulatoria Nuclear Argentina

Energy Technology Data Exchange (ETDEWEB)

Chahab, Martin [Autoridad Regulatoria Nuclear, Buenos Aires (Argentina)

2006-07-01

In 2006, the Argentine Nuclear Regulatory Authority has initiated a regulatory knowledge management process to face the loss of knowledge resulting from retiring experts, the generation gap, and the existing need to train new human resources. A number of projects have been started together with the technical assistance of the National Public Administration Institute to preserve knowledge and render it explicit for the coming generations. These projects include 'The History of the Expert's Learning Process' in which the majority of the most critical experts have been interviewed so far. The results of this project help envision a training structure and prospective projects. An Internet Site has also been created on the Intranet in order to render knowledge explicit and facilitate the tools for knowledge management initiatives. Furthermore, ARN's knowledge map project has also been started. (author) [Spanish] La Autoridad Regulatoria Nuclear (ARN), es un Organismo Autarquico de la Administracion Publica Nacional de la Republica Argentina. La puesta en marcha de la gestion del conocimiento en este Organismo responde a la necesidad de no perder los conocimientos de la institucion en el marco del problema del retiro de un numero importante de expertos y de la falta de transmision de sus conocimientos a la nueva generacion. Esta actividad se pone en marcha a traves de programas especificos como entrevistas a expertos retirados y en actividad, la confeccion de un mapa del conocimiento, la identificacion de los conocimientos tacitos y explicitos para su transmision intergeneracional, entre otros, e implica supeditar la estructura tradicional y los procedimientos ya establecidos a los resultados de la misma para cumplir con la mision y vision institucional. Se presentan los objetivos y las caracteristicas del Plan Estrategico de la Institucion, los resultados hasta ahora alcanzados y los desafios a afrontar. (autor)

Sulfur Cycling in an Iron Oxide-Dominated, Dynamic Marine Depositional System: The Argentine Continental Margin

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Natascha Riedinger

2017-05-01

Full Text Available The interplay between sediment deposition patterns, organic matter type and the quantity and quality of reactive mineral phases determines the accumulation, speciation, and isotope composition of pore water and solid phase sulfur constituents in marine sediments. Here, we present the sulfur geochemistry of siliciclastic sediments from two sites along the Argentine continental slope—a system characterized by dynamic deposition and reworking, which result in non-steady state conditions. The two investigated sites have different depositional histories but have in common that reactive iron phases are abundant and that organic matter is refractory—conditions that result in low organoclastic sulfate reduction rates (SRR. Deposition of reworked, isotopically light pyrite and sulfurized organic matter appear to be important contributors to the sulfur inventory, with only minor addition of pyrite from organoclastic sulfate reduction above the sulfate-methane transition (SMT. Pore-water sulfide is limited to a narrow zone at the SMT. The core of that zone is dominated by pyrite accumulation. Iron monosulfide and elemental sulfur accumulate above and below this zone. Iron monosulfide precipitation is driven by the reaction of low amounts of hydrogen sulfide with ferrous iron and is in competition with the oxidation of sulfide by iron (oxyhydroxides to form elemental sulfur. The intervals marked by precipitation of intermediate sulfur phases at the margin of the zone with free sulfide are bordered by two distinct peaks in total organic sulfur (TOS. Organic matter sulfurization appears to precede pyrite formation in the iron-dominated margins of the sulfide zone, potentially linked to the presence of polysulfides formed by reaction between dissolved sulfide and elemental sulfur. Thus, SMTs can be hotspots for organic matter sulfurization in sulfide-limited, reactive iron-rich marine sedimentary systems. Furthermore, existence of elemental sulfur and iron

Argentine stem weevil ( Listronotus bonariensis, Coleoptera: Curculionidae) population dynamics in Canterbury, New Zealand dryland pasture.

Science.gov (United States)

Goldson, S L; Barron, M C; Kean, J M; van Koten, C

2011-06-01

The Argentine stem weevil (Listronotus bonariensis) was an economically important pest in New Zealand pastures until the release of the parasitoid Microctonus hyperodae. This contribution uses historical data to investigate the regulation of the pest populations prior to, and somewhat during, the establishment of this parasitoid in dryland Canterbury, New Zealand. Thus, a significant goal of this study is to provide an L. bonariensis population dynamics baseline for any future work that aims to analyse the full effects of M. hyperodae on the weevil, now that equilibrium with the weevil host has been reached.The population dynamics of L. bonariensis, based on a life-table approach, were investigated using data collected regularly for eight years from populations in Canterbury, New Zealand. The key factor affecting end-of-season L. bonariensis density was found to be variation in second generation fourth instar prepupal and pupal mortality. This may have been caused by arrested development and ongoing mortality resulting from the onset of cooler autumnal conditions.A compensatory response was found in recruitment to the second summer weevil generation, whereby the realised fecundity of the emergent first summer generation of weevils was found to be negatively related to the density of adult weevils per ryegrass tiller. This is the first time that this has been found via long-term population analysis of L. bonariensis, although indications of this have been found elsewhere in caging, pot and small plot experiments.In this study, the effect of the parasitoid biocontrol agent Microctonus hyperodae on L. bonariensis population dynamics was unclear, as the analysis covered a period when the parasitoid Microctonus hyperodae was introduced and still establishing. It does, however, raise important questions for future analysis in terms of the interaction between parasitism and unrealised fecundity.The results in this contribution also highlighted regional differences

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

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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

Status of plutonium recycle from mixed oxide fuel fabrication wastes (U,Pu)O2 facility activities

International Nuclear Information System (INIS)

Quesada, Calixto A.; Adelfang, Pablo; Greiner, G.; Orlando, Oscar S.; Mathot, Sergio R.

1999-01-01

Within the specific subject of mixed oxides corresponding to the Fuel Cycle activities performed at CNEA, the recovery of plutonium from wastes originated during tests and pre-fabrication stages is performed. (author)

En torno a la desilusión argentina On Argentine disillusionment

Directory of Open Access Journals (Sweden)

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.

Manufacturing at industrial level of UO2 pellets for the fuel elements of the Atucha I Nuclear Power Plant

International Nuclear Information System (INIS)

Dyment, I.G.; Noguera Rojas, Francisco

1982-01-01

The interest to produce fuel elements within a policy of self sufficiency arose with the installation of Atucha I. The first steps towards this goal consisted in processing the uranium oxide, transforming it into fuel pellets of high density. The developments towards the fabrication of said pellets, performed by CNEA since 1968, first at a laboratory level and afterwards on an industrial scale, allowed CNEA to obtain its own technological capability to produce 400 kg of UO 2 per day. The fuel pellets manufacturing method developed by CNEA is a powder-metallurgical process, which, besides conventional equipment, involves the use of special equipment that required the performance of systematic testing programmes, as well as special training at operational level. The developed processes respond to a modern and advanced technology. A general scheme of the process, starting with a directly sinterable UO 2 powder, is described, including compacting of the powder into pellets, sintering, control of the temperature in the sintering and reduction zones and of the time of permanence in both zones, and cylindric rectifying of the pellets. During the whole process, specialized personnel controls the operations, after which the material is released by the Quality Control Department. The national contribution to the manufacturing technology of the pellets for fuel elements of power and research reactors was of 100%. (M.E.L.) [es

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

International Nuclear Information System (INIS)

Giubergia, J.H.; Coppari, N.R.; Rey, F.C.

2004-01-01

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)

Afterbody Drag. Volume 3. Literature Survey.

Science.gov (United States)

1980-06-01

Investigacion Aeronautica y Espacial , Cordoba, Argentine, Rep. 01-65, June 1965. de Krasinski, J., "A Study of Separated Base Flow Behind Bodies of...Investigacion Aeronautica y Espacial , Cordoba, Argentine, January 1966. de Krasinski, J., "Study of Separated Base Flow Behind Bodies of Revolution in...Investigacion Aeronautica y Espacial , Cordoba, Argentine, June 1966. De Kuyper, R.E., "Investigation of Plume Effects on the Stability Charac- teristics of a

Uranium mining environmental restoration project (PRAMU)

International Nuclear Information System (INIS)

Asenjo, A.

2002-01-01

The National Atomic Energy Commission (CNEA) started its activities 50 years ago and obtained significant results. At the present time, the CNEA is defined as an Institution of research and development in the nuclear field. It is also responsible for the management of radioactive wastes and the dismantling of nuclear and radioactive facilities. Mining and milling activities have been carried out during the past 40 years and at present the CNEA is undertaking the Uranium Mining Environmental Restoration Project (PRAMU). The aim of this project is to restore the environment as much as is possible in all places where uranium mining and milling activities were developed when taking into consideration both economic and technical reality. First, the characteristics of the problems in each site are determined through appropriate studies which identify the existing or potential impacts, the possible pathways of contamination, etc. The sites being studied are: MALARGUE (Mendoza Province), CORDOBA (Cordoba Province), LOS GIGANTES (Cordoba Province), HUEMUL (Mendoza Province), PICHINAN (Chubut Province), TONCO (Salta Province), LA ESTELA (San Luis Province), LOS COLORADOS (La Rioja Province). PRAMU seeks to improve the current conditions of the tailings deposits and mines and to ensure the long term protection of people and the environment. The CNEA is required to comply with all legislation that is in force and is under the control of various national, provincial and local State institutions. The main objectives of the project for the various sites are: (a) Malargue site: to implement the actions necessary for environmental restoration and management of the tailings derived from the uranium ores processed in the industrial plant; (b) Cordoba and Los Gigantes sites: to design, engineer and execute the activities required for closure of the sites; (c) Other sites (Huemul, Pichinan, Tonco, La Estela, Los Colorados): to develop an environmental evaluation and, on the basis of

Fifty years contribution to research and technological development of Argentina. Part 3

International Nuclear Information System (INIS)

Aguirre, Fernando; Boselli, Alfredo; Colangelo, Luis J.; Coll, Jorge A.; Espejo, Hector; Mattei, Clara E.; Ornstein, Roberto M.; Palacios, Tulio A.; Radicella, Renato; Rodrigo, Felix

2001-01-01

This paper is the third part of a short history of the National Atomic Energy Commission (CNEA). The activities concerning the radioisotope and radiation applications are reviewed as well as the radiation protection program

History of the libraries of the National Atomic Energy Commission. Part 1

International Nuclear Information System (INIS)

Alcon, Susana J.; Puglia, Gabriela; Chavez, Alejandra T.

2004-01-01

The paper is a historical overview of the libraries of the National Atomic Energy Commission (CNEA) of Argentina and covers the period between 1952-1988. The libraries that have been created and organized as a support for the CNEA staff to meet the information requirements on nuclear subjects, extended their services to the whole scientific and technological community in Argentina and in the Latin America Region. They have an important volume of documents and have been able to fulfill the needs of a demanding group of users because of the high level of its professional staff. The paper outlines the development of the collections, the technical processing methods and the services provided as well as information on the librarians that have been the heads of the libraries. (author)

Evaluación de la validez de constructo y la confiabilidad del inventario de masculinidad y femineidad en adolescentes y adultos jóvenes colombianos

OpenAIRE

César Armando Rey Anacona; Smith Ibeth Guerrero Rodríguez; Jorge Arturo Martínez Gómez

2012-01-01

The objective of this work is to study if children’s perception of parental relationship and parental empathy can predict prosocial behaviour during childhood. The sample was composed of 934 Argentine children, aged 9 to 12, of middle socio-economical level. The participants completed Argentine Scale of Children Perception of Parental Relationship (Richaud de Minzi, 2007), an Argentine adaptation of Scale of Prosocial Behaviour (Caprara and Pastorelli, 1993) and a questionnaire to measure chi...

Professional practices: a short introduction of national nuclear activities to university students; Practicas profesionales: breve incursion laboral de alumnos universitarios en las actividades nucleares

Energy Technology Data Exchange (ETDEWEB)

Martin, Hugo R [Comision Nacional de Energia Atomica, Cordoba(Argentina). Regional Centro

2005-07-01

This paper is a continuation of precedents annual works presented in AATN Meetings, informing about activities of Institutional Affairs Sector of Central Region delegation of National Atomic Energy Commission (CNEA-RC). Regular activities in Cordoba city, have been carried out during half a century in urban zone of Cordoba City. Activities show a long misunderstanding and confrontations with the provincial and municipal authorities, and with the neighbors and environmentalist antinuclear organizations. The experience indicates that the people demands for the protection of health or environment, and sometimes the claiming for closing some facilities, have been directly related with what people really know about the activities in the site. The common denominator that one observes in the conflicts of the past, is the high degree of ignorance on the part of the citizenship on the activities that are carried out in the place. This is valid for the neighbors, the competent authorities and even for Cordoba's university, scientific and technical qualified community. Starting from the recognition of the responsibility that has the institution of informing the population appropriately on what is carried out in their facilities, the CNEA-RC had developed an institutional process of Professional Practices of university students which is described in this paper. The experience of two years, has shown that results are positive because the university community (teachers, students and researchers) knows now the real status of national nuclear activities. (author) [Spanish] Este trabajo pretende dar continuidad a la informacion que anualmente, a traves de las reuniones de la AATN, se brinda desde la Subgerencia de Asuntos Institucionales de la CNEA, sobre los resultados obtenidos en las actividades que se realizan en Cordoba. Como se ha informado antes, debido al emplazamiento urbano de la Regional Centro de CNEA (CNEA-RC) en un predio compartido con la empresa Dioxitek S.A. que

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

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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.

Evaluation of neutralization patterns of the five unique Argentine equine arteritis virus field strains reported Evaluación de los patrones de neutralización de las únicas cinco cepas argentinas descritas de arteritis viral equina

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M. G. Echeverría

2010-02-01

Full Text Available Equine viral arteritis (EVA is a contagious viral disease that frequently causes mild or subclinical infections in adult horses. Only one EAV serotype has been described. However, there are differences in antigenicity, pathogenicity and neutralization characteristics of virus field strains. The interaction of two viral proteins, GP5 and M, is critical for infectivity and amino acid changes in the GP5 sequences have an effect on the neutralizing phenotype, regardless the effects of other viral proteins. The objective of the present study was to evaluate the neutralization phenotypes of the 5 unique Argentine EAV strains reported and to compare them with the neutralization phenotypes of the EAV-UCD reference strain, with special emphasis on the analysis of M and GP5 proteins. The strains had a similar neutralization phenotype pattern when anti-EAV serum, derived from EAV seropositive horses, was used in the analysis. Meanwhile, low titers were observed when equine polyclonal anti-EAV reference sera were used in the assay. Argentine strains have almost the same amino acid substitutions, with the exception of LP01 strain, that mainly involves the first variable region V1, especially in neutralization sites B and C. However, they are fairly different from the EAV-UCD strain. Nevertheless, the nucleotide and amino acid differences observed among the Argentine strains LP02/R, LP02/C, LP02/P and LP-LT-ARG did not show any variations in the neutralization phenotype.La arteritis viral equina (AVE ocasiona infecciones, en su mayoría subclínicas, pero puede causar abortos y enfermedad respiratoria. Si bien se ha descrito un solo serotipo de AVE, existen diferencias en cuanto a la antigenicidad, patogenicidad y patrones de neutralización en las cepas de campo. Los ORF5 y ORF6 del virus codifican las proteínas de envoltura GP5 y M; la interacción entre estas proteínas es crítica para la infectividad. Los cambios en las secuencias de aminoácidos en la

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

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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

A pilot programme for the detection of neonatal hypothyroidism in Argentina

International Nuclear Information System (INIS)

Barmasch, M.; Fontana, O.; Velazquez, B.; Straface, R.

1986-01-01

The CNEA (Argentine National Atomic Energy Commission) is engaged in a pilot programme with a view to adapting the procedures used in the developing countries, demonstrating the clinical value of mass-scale detection and transferring the methodology developed to medical care centres, where its application could be extended to cover the whole population. For this purpose, the authors selected six zones in Argentina with different geographical and epidemiological characteristics: (1) Greater Buenos Aires, with its stable local population, plus a contribution from the population migrating from within the country; (2) a maritime zone; (3) a north-eastern zone: midland and lowland; (4) a north-western zone; (5) a western zone; (6) a south-western zone; the three last provinces of the Cordillera are classed as endemic goitre zones. The method of detection selected was radioimmunoassay of human thyrotrophic hormone (TSH) in whole blood samples absorbed on paper, using commercial kits designed for neonatal measurement. Statistical studies were made to optimize the time of extraction of the blood sample with allowance for the fact that in the countryside discharge of the new-born child from the hospital frequently occurs within 24 hours. A major percentage of new-born children with suspicious TSH values due to perinatal pathology, through lack of pre-natal care, was observed in the population lacking resources and health insurance. In order to facilitate the follow-up of the hypothyroid children the measurement of thyroid hormones in serum using the RIA laboratories available in each of the regions was initiated. As a result, the pilot programme has brought to light 11 hypothyroids out of the 14,574 new-born babies studied; a very high incidence was observed in the endemic goitre zones

Corrosion of steel drums containing immobilized ion exchange-resins and incineration ashes

International Nuclear Information System (INIS)

Marotta, F.; Schulz Rodriguez, F.M.; Farina, Silvia B.; Duffo, Gustavo S.

2009-01-01

The Argentine Atomic Energy Commission (CNEA) is responsible for developing the management nuclear waste disposal programme. This programme contemplates the design and construction of a facility for the final disposal of intermediate-level radioactive wastes. The proposed model is a near-surface monolithic repository similar to those in operation in El Cabril, Spain. The design of this type of repository is based on the use of multiple, independent and redundant barriers. The intermediate radioactive waste consists mostly in spent ionic exchange resins and filters from the nuclear power plants, research reactors and radioisotopes production facilities. The spent resins, as well as the incineration ashes, have to be immobilized before being stored to improve leach resistance of waste matrix and to maintain mechanical stability for safety requirements. Generally, cementation processes have been used as immobilization techniques for economical reasons as well as for being a simple operation. The immobilized resins and incineration ashes are thus contained in steel drums that, in turn, can undergo corrosion depending on the ionic content of the matrix. This work is a part of a systematic study of the corrosion susceptibility of steel drums in contact with immobilized cemented exchange-resins with different types and contents of aggressive species and incineration ashes. To this purpose, a special type of specimen was manufactured to simulate the cemented waste in the drum. The evolution of the corrosion potential and the corrosion current density of the steel, as well as the electrical resistivity of the matrix are being monitored along time. The aggressive species studied were chloride ions (the main ionic species present in nature) and sulphate ions (produced during the radiolysis process of the cationic exchange-resins after cementation). Preliminary results show the strong effect of chloride on the corrosion susceptibility of the steel. Monitoring will continue for

Reinforced concrete in the intermediable-level nuclear waste repository

International Nuclear Information System (INIS)

Duffo, Gustavo

2009-01-01

The National Atomic Energy Commission (CNEA) is responsible for developing the nuclear waste disposal management programme. This programme contemplates the design and construction of a facility for the final disposal of intermediate-level radioactive wastes. The proposed model is a near-surface monolithic repository similar to those in operation in El Cabril, Spain. The design of this type of repository is based on the use of multiple, independent and redundant barriers and the model foresees a period of 300 years of institutional post-closure control. Since the vault and cover are major components of the engineered barriers, the durability of these concrete structures is an important aspect for the facility integrity. This work presents laboratory investigations performed on the corrosion susceptibility of steel rebars embedded in two different types of high performance reinforced concretes, recently developed by the National Institute of Industrial Technology (Argentine). Concretes were made with cement with Blast Furnace Slag (CAH) and Silica Fume cement (CAH + SF). The aim of this work is to predict the service life of the intermediate level radioactive waste disposal vaults from data obtained from electrochemical techniques. Besides, the diffusion coefficients of aggressive species, such as chloride and carbon dioxide, were also determined. On the other hand, data obtained with corrosion sensors embedded in a vault prototype is also included. These sensors allow on-line measurements of several parameters related to the corrosion process such as rebar corrosion potential and corrosion current density; incoming oxygen flow that reaches the metal surface; concrete electrical resistivity; chloride concentration and internal concrete temperature. All the information obtained from both, laboratory tests and sensors will be used for the final design of the container in order to achieve a service life more or equal than the foreseen durability for this type of

Turbidity, SOLAR RADIATION - ATMOSPHERIC and other data from GENERAL SAN MARTIN, GOYENA and other platforms from 1954-05-24 to 1993-12-17 (NODC Accession 9500138)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — The water depth and temperature data was collected from 26 different ships by the Argentine Oceanographic Data Center (AODC) within the Argentine Continental Shelf....

Discusiones sobre el realismo en la narrativa argentina contemporánea

Directory of Open Access Journals (Sweden)

Sandra Contreras

2005-11-01

Full Text Available From recent readings on Argentine realism of, mainly, Martín Kohan, Graciela Speranza, Nora Avaro and Analía Capdevila, hypotheses around the following axes are thought and discussed: 1. scope and present situation of the category of realism in relation to the current Argentine narrative; 2. scope and limits of a new reading of Lukács theory today; 3. problem of the definition of the realist type; 4. realist variations in contemporary Argentine narrative.

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

From biophysical to social-ecological trade-offs: integrating biodiversity conservation and agricultural production in the Argentine Dry Chaco

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Matias E. Mastrangelo

2015-03-01

Full Text Available Agricultural intensification in rural areas of developing countries compromises the provision of ecosystem services. Social conflict arises among landholders with different preferences for ecosystem services and land-use practices in agricultural frontiers of the Argentine Dry Chaco. We explored policy and management options by assessing the actual and potential outcomes of alternative land-use systems and scenarios. We first constructed the efficiency frontier for avian habitat and agricultural productivity to analyze the combinations of ecosystem services that can be achieved under different land-use intensities. A nonlinear, concave efficiency frontier indicated opportunities to achieve large gains for production with small losses for conservation, for instance, by transitioning from low- to intermediate-intensity systems. Second, we projected production and conservation outcomes, which can be achieved through the implementation of five alternative policy options. The land sharing with conservation scenario, 70% of the landscape covered by intermediate-intensity systems and 30% by undisturbed forests, yielded the higher combination of avian habitat and agricultural productivity. Third, we constructed indifference curves of three landholder groups, i.e., preproductivist, multifunctional, and productivist, by assessing their intentions (proxies for preferences to conserve and convert remnant forests in their landholdings. Multifunctional landholders showed balanced preferences for conserving and converting forests in their landholdings, and maintaining intermediate-intensity systems. A general willingness to conserve forests coexisted in preproductivist landholders with the intention to clear some portions of the landholding and intensify landuse, indicating the potential of an endogenously motivated transition toward a multifunctional regime. Such transition may increase their productivity by 35-65% without compromising avian habitat

El nuevo gobierno de Sancho by Leonardo Castellani, in the light of Cervantine model

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María Mercedes Rodríguez Temperley

2017-11-01

Full Text Available Almost since its publication, Don Quixote had an attractive magnetism in writers from different languages and different times, who imitated, continued and rewroted the Cervantes’s best literary work. Argentine is possibly the american country that most has contributed to increased this literary heritage. Contemporary to the famous «Pierre Menard, autor del Quijote» published by Jorge Luis Borges in 1939 and 1941 (perhaps the paradigmatic rewriting of a Cervantine text in the argentine literature will rise an original and unclasificable text: a political satire of the argentine reality of the River Plate, looking for an argentine identity. This work is El nuevo gobierno de Sancho, published by the Jesuit Leonardo Castellani in 1942. The purpose of this article is to do a comparative study with Don Quixote.

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. Copyright © 2015 Elsevier B.V. All rights reserved.

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

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G. D. Wells

1997-03-01

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.

Safety aspects of the FMPP (Fuel Manufacturing Pilot Plant) setup constructed by INVAP in the Arabic Republic of Egypt

International Nuclear Information System (INIS)

Cinat, Enrique; Boero, Norma L.

1999-01-01

The FMPP is a fuel plates manufacturing plant for test reactors. This facility was designed, constructed in El Cairo and turned-key handled by INVAP SE to the Arabian Republic of Egypt. In this project, CNEA participated in the transference of technology, elaboration of documents, training of Egyptian personnel and technical services during the setup of the facility in El Cairo. These tasks were undertaken by UPMP (Uranium Powder Manufacturing Plant) and ECRI (Research Reactors Fuel Elements Plant) personnel. Both plants in CNEA served as a FMPP design basis. During the setup of the facility a fuel element with natural uranium was firstly manufactured and then another one using uranium with 20% enrichment. In this paper the responses of the system regarding safety, after finishing the first two stages of manufacturing, are analyzed and evaluated. (author)

Safety aspects of the FMPP (Fuel Manufacturing Pilot Plant) setup constructed by INVAP in the Arabic Republic of Egypt; Aspectos de seguridad en la puesta en marcha de la FMPP (Fuel Manufacturing Pilot Plant) construida por INVAP en la Republica Arabe de Egipto

Energy Technology Data Exchange (ETDEWEB)

Cinat, Enrique; Boero, Norma L [Comision Nacional de Energia Atomica, General San Martin (Argentina). Dept. de Combustibles Nucleares

1999-07-01

The FMPP is a fuel plates manufacturing plant for test reactors. This facility was designed, constructed in El Cairo and turned-key handled by INVAP SE to the Arabian Republic of Egypt. In this project, CNEA participated in the transference of technology, elaboration of documents, training of Egyptian personnel and technical services during the setup of the facility in El Cairo. These tasks were undertaken by UPMP (Uranium Powder Manufacturing Plant) and ECRI (Research Reactors Fuel Elements Plant) personnel. Both plants in CNEA served as a FMPP design basis. During the setup of the facility a fuel element with natural uranium was firstly manufactured and then another one using uranium with 20% enrichment. In this paper the responses of the system regarding safety, after finishing the first two stages of manufacturing, are analyzed and evaluated. (author)

CAREM-25: considerations about primary coolant chemistry

International Nuclear Information System (INIS)

Chocron, Mauricio; Iglesias, Alberto M.; Raffo Calderon, Maria C.; Villegas, Marina

2000-01-01

World operating experience, in conjunction with basic studies has been modifying chemistry specifications for the primary coolant of water cooled nuclear reactors along with the reactor type and structural materials involved in the design. For the reactor CAREM-25, the following sources of information have been used: 1) Experience gained by the Chemistry Department of the National Atomic Energy Commission (CNEA, Argentina); 2) Participation of the Chemistry Department (CNEA) in international cooperation projects; 3) Guidelines given by EPRI, Siemens-KWU, AECL, etc. Given the main objectives: materials integrity, low radiation levels and personnel safety, which are in turn a balance between the lowest corrosion and activity transport achievable and considering that the CAREM-25 is a pressurized vessel integrated reactor, a group of guidelines for the chemistry and additives for the primary coolant have been given in the present work. (author)

Malargue site, to-day and its future

International Nuclear Information System (INIS)

Meza, Juan C.; Giordano, Norberto L.

2005-01-01

In Argentina the National Atomic Energy Commission (CNEA) has the responsibility of restoring uranium mining facilities once the operations have finished. To carry out these clean up actions CNEA created the Project for Uranium Mining Environmental Restoration (PRAMU). Malargue Site, Mendoza province, has the first restoration priority among 8 sites in the country. The approved project for restoration consists of on site relocation of tailings to an engineering repository. To isolate the tailings from the environment, a multilayer system has been designed. Several works have been made, the secondary previous works were completed and nowadays works on the button portion of the multilayer barrier are being carries out. At the present, it is quite probable that the World Bank grants a credit to finish the works on Malargue Site and in the other sites in Argentina as well. (author)

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

Directory of Open Access Journals (Sweden)

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.

Description of ECRI (CNEA'S MTR fuel fabrication plant)

International Nuclear Information System (INIS)

Echenique, P.; Fabro, J.; Podesta, D.; Restelli, M.; Rossi, G.; Alvarez, L.; Adelfang, P.

2002-01-01

The ECRI Plant is dedicated to the development and fabrication of high-density fuel elements and targets for 99 Mo. In this sector had been done the start up Fuel Elements for the Reactors of Peru, Iran, Algeria and Egypt. All of them were made with U 3 O 8 . The targets for 99 Mo using HEU were fabricated too in the last years. The new material of high-density for Fuel Elements as U 3 Si 2 were done in this sector, three prototypes were fabricated, two are still under irradiation. (P06 and P07). As new developments we are working with U-Mo (7%) Fuel Plates with both material Korean and HMD. This work is under the RERTR Program and two fuel elements, manufactured by us, with both powders, will be irradiated in Petten. For 99 Mo targets, we are fabricating miniplates of LEU with an AlUx powder by pulvi-metallurgy technique. And it is under development the foils targets under the RERTR Program. A general view of the fabrication facilities and control sector will be shown. The different operations that are done in each sector will be explained. All our activities will be certified under the ISO 9000 and we are working hard to get it in the middle of 2003. (author)

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.

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.

Education and training in radiological protection in the Argentine region- IAEA, toward a long term commitment

International Nuclear Information System (INIS)

Terrado, C.; Arbor G, A.; Bozzo, R.; Larcher, A.; Menossi, C.; Sajaroff, P.

2006-01-01

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 'Education and

Fifty years contribution to research and technological development of Argentina. Part 4

International Nuclear Information System (INIS)

Aguirre, Fernando; Boselli, Alfredo; Colangelo, Luis J.; Coll, Jorge A.; Espejo, Hector; Mattei, Clara E.; Ornstein, Roberto M.; Palacios, Tulio A.; Radicella, Renato; Rodrigo, Felix

2003-01-01

The paper is the forth part of a short history of the National Atomic Energy Commission (CNEA). The activities concerning the radioactive waste management are reviewed as well as the research and development programs in the sciences related to nuclear energy. (author)

Status of RA3 conversion studies

International Nuclear Information System (INIS)

Testoni, J.

1983-01-01

Studies carried out at CNEA in Argentina for the conversion of the RA3 3.5 MW reactor to LEU fuel dealt with neutronic, thermal hydraulic, safety analysis, as well as fuel manufacture. Some of the results for the neutronic studies are reported

Actions concerning nuclear power plant life evaluation

International Nuclear Information System (INIS)

Chocron, M.; Fabbri, S.; Mizrahi, R.; Savino, E.J.; Versaci, R.A.

1998-01-01

One of the main activities to be undertaken by CNEA will be to provide technological assistance to NASA in problems concerning NPP operation. Works on life extensions of NPP are included in these activities. To fulfill these requirements the Atomic Energy National Commission (CNEA) has constituted a technical committee for Nuclear Power Plants Support (CAPCEN). CAPCEN should be the knowledge reservoir of those issues concerning the performance, safety and life extension of Nuclear Power Plants. One of CAPCEN's most important activities is to promote research work connected with such issues. The main technical areas are: Pressure Vessel and Piping, Heat Exchanges and Fuel Channels and Reactor Inner Components. Efforts are focused on the identification of the main components susceptible of ageing, the study of their ageing mechanisms, the follow-up of their behaviour during operation, and the measures taken to extend their life. (author)

History of radiobiology in Argentina

International Nuclear Information System (INIS)

Mayo, Jose

2004-01-01

Radiobiology is a multidisciplinary science dealing with ionising radiation effects on biological material. The history of Radiobiology begins in Germany and France around 1886. Radiobiology was introduced in Argentina in 1926 at the Institute of Oncology Angel H. Roffo as a biomedical research branch. Later on in 1957 was incorporated at the National Atomic Energy Commission (CNEA) of Argentina as a result of the newly started nuclear activities in Argentina. Prior that time no Radiobiology research existed in Argentina. To fill this need a Project to create new laboratories was elaborated by the CNEA. New laboratories in Radiobiodosimetry, Cellular Radiobiology, Radiopathology, Radiomicrobiology, Genetics and Somatic Effects were created. Human resources on different areas of Radiobiology were formed with the assistance of IAEA. With professional and technical personnel specialized in Radiobiology at the beginning of the 1970 decade, the transference of fundamental and applied research to others laboratories started. (author)

Fabrication criteria applicable to Carem pods production

International Nuclear Information System (INIS)

Bianchi, D R; Azzinari, D; Gongora, P; Sabio Calvete, M; Ilarri, M; Perazzo, M; Duarte, J; Duarte, A; Rojas, J; Fleitas, G; Szieber, W C; Vizcaino, P

2012-01-01

In relation CAREM 25 project, PPFAE, CNEA, has been fabricated pods for fuel rods for that reactor. They were used the same fuel rods that to be irradiate and evaluate their behavior with that the same Uranium pellets. The scope of the agreement signed between the authorities of the CNEA and Institutt for Energiteknikk (IFE) in Norway, it contemplated irradiated fuel rods type CAREM fabricated from these fuel pods in the OECD Halden Reactor Project (HRP, venture led by IFE and integrate more than 16 countries). The work contemplates the production of two experimental item fuel pods. From the second item fuel pods will be used in the fuel rods. In this paper we analyze the sequences used; the results obtained and the general conditions for the development of the final process to be applied in the production phase for a reactor CAREM 25 (author)

Assessing potential for community-based management of peccaries through common pool resource theory in the rural area of the Argentine Chaco.

Science.gov (United States)

Altrichter, Mariana

2008-03-01

Community-based management (CBM) has been recognized as an appropriate approach to conservation, assuming that local communities have higher stakes than the state in their natural resources and have better knowledge of local resources and, therefore, can manage them more efficiently. However, the implementation of CBM has not always been successful. The objective of this research was to assess the potential for the implementation of a governmental proposal for community-based management of peccaries (Tayassuidae) in the Impenetrable northern Argentine, through the examination of the reasons why arrangements to avoid overexploitation have not evolved in this region. I used the theory of common pool resources (CPRs) as a framework for this analysis. CPRs theory explains the conditions under which appropriators of a resource are likely to engage in devising and altering governing arrangements and the conditions under which such arrangements are likely to succeed. Fieldwork was conducted between June 2000 and August 2003 using a mixed methods approach. It was found that most of the condition of the resource and users identified by the CPR theory as associated with an increased likelihood of successful management of natural resources are absent or scarcely developed in the Impenetrable. Thus, the situation in the Impenetrable does not seem appropriate for the implementation of CBM of peccaries. It is first necessary to invest in training and development of local institutions' capacities and social capital. It is also important to increase the flow of relevant information, which will enable institutions to be effective, responsible, and accountable to the community. For the moment, a more appropriate approach will have to include a mixture of protectionism and comanagement of collared peccaries while the propitious conditions for a complete local management of the resource are developed.

Favipiravir (T-705 inhibits Junín 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 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.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.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.

First national meeting of magnetic resonance and hyperfine interactions

International Nuclear Information System (INIS)

1985-07-01

Works performed at CNEA's: Magnetic Resonance Division; Moessbauer Spectroscopy; Solid State Physics Division; Nuclear magnetic Resonance Laboratory and Theoretical Physics Group; Mossbauer Spectroscopy Group; Nuclear Quadrupole Resonance; Physics and Materials Group; Perturbed Angular Correlation and Moessbauer Spectroscopy and Physics Department. (M.E.L.) [es

JPRS Report Nuclear Developments

Science.gov (United States)

1988-09-02

cracks in Atucha I were detected during the administration of Eng Alberto Constantini. Last year Constantini resigned as CNEA president due to...days, Finance Minister Mailson da Nobrega, Mines and Energy Minis- ter Aureliano Chaves, and Planning Minister Joao Batista de Abreu should be

El cine y lo que queda de mí. Hernan Musaluppi

OpenAIRE

Chillón, Eva

2014-01-01

Philies et phobies d’un producteur, enfin mûr Hernán Musaluppi (Rizoma Films), responsable de quelques-uns des films les plus remarquables du nouveau cinéma argentin, publie un livre qui démolit sa profession, l’industrie cinématographique, et le cinéma prétendument indépendant en Argentine. Dans El cine y lo que queda de mí (Capital Intelectual, 2012), le producteur argentin publie les mémoires de sa catharsis, personnelle et professionnelle, qui le mènera à sa maturité. Un livre sans détour...

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.

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.)

Protocol to suspend the application of safeguards pursuant to the Agreement of 26 February 1976 between the Agency, the Government of the Federative Republic of Brazil and the Government of the Federal Republic of Germany in the light of the provisions for the application of safeguards pursuant to the Quadripartite Safeguards Agreement between Argentina, Brazil, the Brazilian-Argentine Agency for the Accounting and Control of Nuclear Materials and the IAEA

International Nuclear Information System (INIS)

1999-01-01

The document reproduces the text of the Protocol of 16 October 1998 suspending the application of safeguards under the Safeguards Agreement (INFCIRC/237) of 26 February 1976 between the Agency, Brazil and the Federal Republic of Germany in the light of the provisions for the application of safeguards pursuant to the Quadripartite Safeguards Agreement between the Agency, Brazil, the Brazilian-Argentine Agency for the Accounting and Control of Nuclear Materials and the IAEA. The Protocol entered into force on 21 October 1999

State summary of radioactive material transport sector in Brazil

International Nuclear Information System (INIS)

Heilbron Filho, P.F.L.; Xavier, A.M.

1991-07-01

The main aim of this work is the scientific cooperation with the CNEA (Argentina) in the area of safe transport of radioactive materials, intending to find solutions to some rural problems and, also, to standardize the transport of radioactive materials between Brazil and Argentina. (E.O.)

Phosphorus fractions and sorption dynamics in the sediments of two Ca-SO4 water reservoirs in the central Argentine Andes

Institute of Scientific and Technical Information of China (English)

José Gabriel León; Fernando Luis Pedrozo; Pedro Félix Temporetti

2017-01-01

Phosphorus (P) fractionation and sorption behavior were studied in the sediments of two calcium-sulfate (Ca-SO4:Ca2+170 mg L-1;SO42-400 mg L-1) water reservoirs in the southern central Argentine Andes-El Carrizal Reservoir (ECR),which stratifies in summer and El Nihuil Reservoir (ENR),which is vertically mixed throughout the year. Sediment size classes reflected the lithology of both basins and the reservoirs relative location:ECR (downstream from a valley adjacent to a mountain environment) had higher clay proportions while the sand fraction was more important in ENR (just next to a mountain environment). In both reservoirs, the chemical composition revealed low alteration and calcium enrichment. Total P content was relatively high (1.1–1.6 mg P kg-1 dry weight) as expected from the contribution of marine formations. P fractionation was dominated by Ca-P (ECR, 69%and ENR, 63%) followed by organic-P (23%) in summer-anoxic ECR and by iron/aluminum (Fe/Al)-P (27%) in oxic ENR. Batch experiments showed that sorption behavior in ECR had a typical Langmuir isotherm plot while in ENR that model fitted only at low dissolved P values (<5 mg P L-1) and co-precipitation evidence was observed at higher P con-centrations. It is proposed that lower Fe/Al-P content in anoxic (ECR) vs. oxic (ENR) sediments results from the P released from iron-bound phosphorus due to sulfate reduction-ferrous sulfide formation in an anoxic environment. This condition should enable ECR sediments to adsorb P into fresh oxidized iron, and ENR sediments to co-precipitate P with calcium due to Fe/Al-P saturation, as observed in batch experiments. This paper constitutes the first description of phosphorus content and dynamics in reser-voir sediments in arid central western Argentina, where water sulfate concentrations are naturally high due to basin lithology.

On line local measurement of thermal neutron flux on BNCT patient using SPND

International Nuclear Information System (INIS)

Miller, M.E.; Sztejnberg Goncalves-Carralves, M.L.; Gonzalez, S.J.

2006-01-01

The first on-line neutron flux measurement on a patient using a self-powered neutron detector (SPND) was assessed during the fourth clinical trial of the Boron Neutron Capture Therapy (BNCT) Project carried out at the National Atomic Energy Commission of Argentina (CNEA) and the medical center Angel H. Roffo. The SPND was specially developed and assembled for BNCT by CNEA. Its small size, 1 cm sensible length and 1.9 mm diameter, allowed performing a localized measurement. Since the treated tumors were cutaneous melanomas of nodular type, the SPND was located on the patient's skin. The patient was exposed to three different and consecutive fields and in each of them the SPND was used to measure local thermal neutron fluxes at selected dosimetric reference points. The values of the measured fluxes agreed with the ones estimated by calculation. This trial also demonstrated the usefulness of the SPND for assessing flux on-line. (author)

Comparison between a finite difference model (PUMA) and a finite element model (DELFIN) for simulation of the reactor of the atomic power plant of Atucha I; Comparacion entre un modelo de diferencias finitas (PUMA) y uno de elementos finitos (DELFIN) para la simulacion del reactor de la CNA-I (central nuclear Atucha-I)

Energy Technology Data Exchange (ETDEWEB)

Grant, C R [Comision Nacional de Energia Atomica, San Martin (Argentina). Unidad de Actividad Reactores y Centrales Nucleares

1997-12-31

The reactor code PUMA, developed in CNEA, simulates nuclear reactors discretizing space in finite difference elements. Core representation is performed by means a cylindrical mesh, but the reactor channels are arranged in an hexagonal lattice. That is why a mapping using volume intersections must be used. This spatial treatment is the reason of an overestimation of the control rod reactivity values, which must be adjusted modifying the incremental cross sections. Also, a not very good treatment of the continuity conditions between core and reflector leads to an overestimation of channel power of the peripherical fuel elements between 5 to 8 per cent. Another code, DELFIN, developed also in CNEA, treats the spatial discretization using heterogeneous finite elements, allowing a correct treatment of the continuity of fluxes and current among elements and a more realistic representation of the hexagonal lattice of the reactor. A comparison between results obtained using both methods in done in this paper. (author). 4 refs., 3 figs.

High level radioactive wastes: Considerations on final disposal

International Nuclear Information System (INIS)

Ciallella, Norberto R.

2000-01-01

When at the beginnings of the decade of the 80 the National Commission on Atomic Energy (CNEA) in Argentina decided to study the destination of the high level radioactive wastes, was began many investigations, analysis and multidisciplinary evaluations that be origin to a study of characteristics never before carried out in Argentina. For the first time in the country was faced the study of an environmental eventual problem, several decades before that the problem was presented. The elimination of the high level radioactive wastes in the technological aspects was taken in advance, avoiding to transfer the problems to the future generations. The decision was based, not only in technical evaluations but also in ethical premises, since it was considered that the future generations may enjoy the benefits of the nuclear energy and not should be solve the problem. The CNEA in Argentina in 1980 decided to begin a feasibility study and preliminary engineering project for the construction of the final disposal of high level radioactive wastes

Uranium mining in Sierra Pintada: knowledge, epistemic communities and development

International Nuclear Information System (INIS)

Martinez Demarco, S. R.

2011-01-01

This paper analyses the conflict triggered by the National Atomic Energy Commission of Argentina (CNEA) proposing to re-open the Mining Complex of Sierra Pintada, in San Rafael, Province of Mendoza. Since 2004 when the Commission submitted the first report to the Ministry of Public Works and Environment of Mendoza to obtain the necessary permission to restart the works in the mine, several protests have taken place and many legal measures were taken in order to stop any resuming attempts. This study argues that, although CNEA has been an epistemic community capable of applying their policy proposals in the nuclear field, their technical knowledge is currently not sufficient to design a policy, and moreover, to hold that they are working for local and sustainable development. Only 'puzzling' 'with actors' paradigms and knowledge is possible to fit together their demands and achieve a public policy, or solution, for this problem. (author) [es

Molding and casting process of a depleted uranium shield for a multipurpose type B (U) transport package of radioactive substances

International Nuclear Information System (INIS)

Raffaeli, Hector A.; Acosta, Mario; Ilarri, Sergio; Alonso, Paula R.; Gargano, Pablo H.; Rubiolo, Gerardo H.

2009-01-01

Anticipating future demand for transport of radioisotopes, a high performance transport package (BU-MAN) with a gamma barrier built in depleted uranium (DU) has been designed by the Radioisotope and Radiation Program (P4) of CNEA in 2003. The shield is a hollow cylinder of approximately 173 mm outside diameter, 223 mm in height, a cylindrical hollow interior 63 mm diameter and 166 mm in height, and a cylindrical plug 58 mm diameter and 57 mm height. Its total weight is 84 Kg. In the period 2004-2006 the Special Alloys Group (DM-GIDAT-GAEN-CNEA) has conducted several developments in order to obtain the mentioned shield, including a manufacturing test casting SAE 1010 in a sand mold. The confirmation of its properties, mechanical and gamma shield are being evaluated by licensing tests of the whole package. In this paper we show all metallurgical processes involved to get the shield in metallic DU. (author)

Comparison between a finite difference model (PUMA) and a finite element model (DELFIN) for simulation of the reactor of the atomic power plant of Atucha I

International Nuclear Information System (INIS)

Grant, C.R.

1996-01-01

The reactor code PUMA, developed in CNEA, simulates nuclear reactors discretizing space in finite difference elements. Core representation is performed by means a cylindrical mesh, but the reactor channels are arranged in an hexagonal lattice. That is why a mapping using volume intersections must be used. This spatial treatment is the reason of an overestimation of the control rod reactivity values, which must be adjusted modifying the incremental cross sections. Also, a not very good treatment of the continuity conditions between core and reflector leads to an overestimation of channel power of the peripherical fuel elements between 5 to 8 per cent. Another code, DELFIN, developed also in CNEA, treats the spatial discretization using heterogeneous finite elements, allowing a correct treatment of the continuity of fluxes and current among elements and a more realistic representation of the hexagonal lattice of the reactor. A comparison between results obtained using both methods in done in this paper. (author). 4 refs., 3 figs

Argentina: Brief Overview of Argentina’s INIS Activities

International Nuclear Information System (INIS)

Bavio, Mercedes

2015-01-01

Argentina works in close collaboration with the IAEA on its technical cooperation program, both on national projects within their national program plan, including its thematic areas, as well as on regional projects through the ARCAL agreement. In the field of horizontal cooperation, Argentina engages in technology transfer, training fellows and receiving scientific visits. Argentina has been a member of the International Nuclear Information System (INIS) since 1970, and was among the first IAEA Member States to agree to participate in the system. As a member, we have been involved in the various activities carried out by the IAEA, disseminating the research and development of our researchers and scientists in nuclear and related subjects and promoting INIS activities. The National Atomic Energy Commission (CNEA) is the INIS National Center. Contributions to the INIS database nationwide are made through the CNEA's Information Centers: Eduardo Savino Information Center (CIES, Constituyentes Atomic Center), Leo Falicov Library (Bariloche Atomic Center) and the Library of the Nuclear Regulatory Authority (ARN)

National supply of reactivity control rods for Embalse nuclear power plant (CNE)

International Nuclear Information System (INIS)

Biondo, C.D.; Carloni, J.G.; Aba, J.A.

1987-01-01

The manufacture and supply on industrial scale of reactivity control rods for CNE (Embalse nuclear power plant) were developed by the National Atomic Energy Commission (CNEA) together with the private industry, as part of a program aimed to the substitution of imported supplies used in the operation of power plants by materials manufactured in Argentina. So far, the control rods were imported from Canada. In this work, the different development stages performed by CNEA and CONUAR S.A. are described, leading to the supply of a set of 21 cobalt rods to be included in a reactor of CNE in order to qualify this component. Among the main activities performed, the following stand out: specifications development, particularly those concerning to cobalt cores, evaluation of design documentation and elaboration of bidding conditions and a plan of manufacture and control. According to the results obtained during the service and the post-irradiation measurements, the design will be reviewed in order to undertake new manufacturing plans. (Author)

Ce que nous faisons | Page 17 | CRDI - Centre de recherches pour ...

International Development Research Centre (IDRC) Digital Library (Canada)

Cohérence de la prévention des maladies non transmissibles et des politiques agroalimentaires en Argentine. L'alimentation malsaine est largement reconnue comme un facteur de risque majeur pour les maladies non transmissibles (MNT). Argentine, Amérique Nord Et Centrale, Amérique Du Sud. PROJECT ...

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

Young students's opinion about atomic energy

International Nuclear Information System (INIS)

Barroso, Belen; Martin, Hugo R.

2006-01-01

The present research work was performed in answer to a requirement that the CNEA-RC made to students of the Public and Institutional Relations Degree of the UES21, as a part of activities carried out in the framework of the Academic Cooperation Agreement between both institutions. In this case the students had to attend the Professional Practical course during the first semester of 2006, which included a short period in some company or organization. The Degree of Knowledge and the Opinion of the students from the Cycle of Specialization of the Province of Cordoba Educational System (ages between 15 and 17 years old), on the activities that are made in the site of CNEA-RC and DIOXITEK SA at Alta Cordoba neighborhood in Cordoba city has been analyzed. The same aspects were analyzed for Dioxitek's activities (equipment, raw materials, risk performance, etc.). Although the activities made at CNEA-RC involved during 2005/6 about 4000 students, due to the short time available for the practical part only the data of two schools located near the facilities were processed. Three aspects of the space conformed between the public and the general opinion were analyzed: the customs, the stereotypes and the attitudes of the people. These aspects were taken as the characteristics to describe to the opinions, their direction and intensity. The analysis was based on an exploratory investigation of type, characterized by its flexibility. The field work was of quantitative character. The surveys were structured with closed questions (categories of answers delimited previously on which the students must answer). For its design we used diverse sources of intelligence, such as pages of Internet, pamphlets, magazines, annual balances of the organizations, etc. The main results were the following: 1) The greater percentage of students declared to have little information on Atomic Energy. Only 4% declared to have abundant knowledge on the subject. 2) A 38% of the students indicated that

Fifty years contribution to research and technological development of Argentina. Part 5

International Nuclear Information System (INIS)

Aguirre, Fernando; Boselli, Alfredo; Colangelo, Luis J.; Coll, Jorge A.; Espejo, Hector; Mattei, Clara E.; Ornstein, Roberto M.; Palacios, Tulio A.; Radicella, Renato; Rodrigo, Felix

2003-01-01

The paper is the fifth part of a short history of the National Atomic Energy Commission (CNEA). The activities concerning the development of the institutional infrastructure and the education and training activities are reviewed as well as the legal and regulatory aspects of nuclear energy in Argentina. (author)

Macro-localization study of a commercial CAREM nuclear power plant in the province of Formosa : state of progress

International Nuclear Information System (INIS)

Torino Araoz, Ines

2011-01-01

The framework agreement signed between Formosa Province and the National Atomic Energy Commission (CNEA) in order to establish formal relations of cooperation with regard to projects of common interest, research and development, technology services, human resource training in the areas inherent to CNEA functions, resulted in a specific agreement in order to analyze the potential location of a CAREM commercial nuclear power plant in the Province. Thus, the site survey study which is under development aims at the determination of one or more sites, which meet the criteria set - security related and not related - and is/are eligible for the installation of the plant. The site selection methodology used to develop the study was based on documentation and bibliography of the International Atomic Energy Agency and CNEA. Taking into account these references, the study began divided into 3 levels; currently, Level I is approved and the analysis of Level II is completed. Each of these levels covers different aspects that must be evaluated during the selection process. That one is a complex analysis, which was carried out through the participation and joint efforts of a multidisciplinary team consisting of CNEA’s staff and the Province of Formosa, which in turn had the cooperation of various institutions. Partial results of the Level II document, determine the pre selection of three potential areas in the province. In turn, it is important to remember that the site survey (regional) study is the first stage in the selection process. Then, the site evaluation stage (micro siting study) and the preparation of the Preliminary Safety Report have to be implemented, in order to establish the definitive site for the plant installation. (author) [es

Environmental Audit: 'A tool used to evaluate and improve the institutional environmental performance'

International Nuclear Information System (INIS)

Goulart, Helga

2009-01-01

The Environmental Audits emerged in the late 70 's in order to verify compliance with industrial activities with environmental standards. The same was done internally by the organizations to avoid late fines and penalties imposed by enforcement authorities. At present, environmental audits are used not only to identify environmental problems that must be corrected, but which now forms part of a procedure for identifying opportunities for continual improvement of the activities of a particular organization. Environmental audits undertaken by Management in the CNEA Environmental Activities meet this proactive role detailed above, whose main objective is also to verify compliance with environmental regulatory framework applicable to each site, to identify environmental improvements that must be applied activities to achieve better performance from them. This paper aims to present the results in the recognition phase of the CNEA 's environmental situation through conducting preliminary environmental analysis and comparison with results at the current stage of implementation of the Institutional Environmental Management System through environmental audits, showing the procedures, issues and standards considered and the evolution of each site's environmental performance in implementing the proposed corrections. The central idea of Management Environmental Activities is to show the different sectors and areas of the institution that the environmental audit, applied in the context of environmental management is an essential tool that enables to encourage staff in environmental issues, making that they are directly participating in management activities and is the most concrete to demonstrate both internally and externally achievements in a certain period of time and activities to achieve the policy of continuous improvement in environmental performance of the CNEA. (author)

Regional training course on state systems of accounting for and control of nuclear material

International Nuclear Information System (INIS)

2001-01-01

The publication is an outline of the subjects that are included in a regional training course organized in Buenos Aires (Argentina) by the IAEA with the cooperation of the Argentine Government and the Brazilian-Argentine Agency for the Accounting and Control of Nuclear Materials (ABACC) from September 24 to October 5, 2001

CONRRAD Project: how CNEA is managing radioactive waste knowledge

International Nuclear Information System (INIS)

Vetere, Claudia L.; Gomiz, Pablo R.

2009-01-01

The aim of this paper is to introduce CONRRAD Project, which is an initiative of the Knowledge Management Group (GesCon) belonged to the Nuclear Safety and Environment Area, for knowledge preservation of Radioactive Waste Management. It discusses the methodology and the results that have been achieved at present. (author)

Argentine regulatory experience concerning radiation protection in industrial gammagraphy; Experiencia regulatoria argentina en gammagrafia industrial en materia de radioproteccion

Energy Technology Data Exchange (ETDEWEB)

Ermacora, Marcela G [Autoridad Regulatoria Nuclear, Buenos Aires (Argentina)

2005-07-01

Industrial gammagraphy has always been responsible for the highest rates of radiological incidents in almost every part of the world. This is mainly due to the high activities of the radioactive sources used, which are constantly transported in the equipment that contains them between the storage and the areas of work, and is also due to workload pressures which may induce to negligence in following the operational procedures, if a strong Safety Culture does not exist. The purpose of this paper is to present the main aspects of the Argentine Regulations relating to radiation protection to control this practice and to contribute in this way to reduce the associated risks. In addition, some incidents occurred in Argentina during the latest years, the causes that led to those events and their relation to the in observance of the regulations in force, their consequences and the measures taken to repair them are described. Finally, the importance of the role that education and training has in the strengthening of Safety Culture, key element of all undertaking, is highlighted. (author) [Spanish] La gammagrafia industrial siempre fue responsable de los mayores indices de accidentes radiologicos en casi todo el mundo. Esto se debe principalmente a las altas actividades de las fuentes radiactivas utilizadas, las cuales son transportadas constantemente en los equipos que las contienen entre el deposito y las areas de trabajo, y a presiones de carga de trabajo que pueden inducir a descuidos en el seguimiento de los procedimientos de operacion, si no existe una Cultura de la Seguridad arraigada. El proposito de este trabajo es presentar los aspectos principales de la reglamentacion argentina en materia de radioproteccion para controlar esta practica y de esta manera contribuir a reducir los riesgos asociados. Asimismo, se describen algunos incidentes ocurridos en argentina durante los ultimos anios, las causas que condujeron a dichos sucesos y su relacion con el incumplimiento

Referencias poblacionales argentinas de peso al nacer según multiplicidad del parto, sexo y edad gestacional Reference birthweights for the Argentine population by multiplicity of birth, sex, and gestational age

Directory of Open Access Journals (Sweden)

Marcelo Luis Urquia

2011-02-01

Full Text Available OBJETIVO: Desarrollar referencias nuevas y mejoradas de peso al nacer según la edad gestacional (EG, el sexo y la multiplicidad del parto, para la población argentina en su conjunto. MÉTODOS: La población de estudio incluyó a todos los nacidos vivos de partos simples (n = 3 478 286 y dobles (n = 57 654 en Argentina durante el período 2003-2007. Los probables errores en la clasificación de la EG basada en la fecha de la última menstruación fueron corregidos con el uso de modelos de distribuciones normales mixtas. Los percentiles se obtuvieron mediante la regresión de cuantiles, que además posibilitó el suavizamiento de las curvas. RESULTADOS: Se obtuvieron curvas de peso al nacer para partos simples entre las semanas 22 y 43 de gestación y para partos dobles entre las semanas 24 y 41, según el sexo del neonato. Comparadas con estudios previos, estas referencias no sobreestiman la proporción de nacidos vivos grandes para su EG. Se observó también un aumento del peso al nacer a lo largo del período de estudio. CONCLUSIONES: Las curvas propuestas tienen las ventajas de basarse en grandes números, de ser representativas de los nacimientos argentinos más recientes, de distinguir el tipo de parto y el sexo de los neonatos, y de minimizar los errores de clasificación de la EG. Constituyen por lo tanto una herramienta útil para medir desigualdades y así identificar grupos poblacionales con mayor riesgo de eventos perinatales adversos.OBJECTIVE: To develop new and improved reference birthweights for the Argentine population as a whole with a breakdown by gestational age (GA, sex and multiplicity of birth. METHODS: The population studied included all live births resulting from single (n = 3,478,286 and double (n = 57,654 births in Argentina during the period 2003- 2007. The probable errors in classifying GA on the basis of last menstruation were corrected using normal mixture models. The percentiles were obtained by quantile

[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.

Fifty years contribution to research and technological development of Argentina. Part 7

International Nuclear Information System (INIS)

Aguirre, Fernando; Boselli, Alfredo; Colangelo, Luis J.; Coll, Jorge A.; Espejo, Hector; Mattei, Clara E.; Ornstein, Roberto M.; Palacios, Tulio A.; Radicella, Renato; Rodrigo, Felix

2004-01-01

The paper is the seventh part of a short history of the National Atomic Energy Commission (CNEA). The future of the nuclear activities in the country is outlined, mainly of those related to the energy generation. The completion of the Atucha II nuclear power plant now under construction is supported. (author)

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.

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

Computational study of the influence of mirror parameters on FRC (field-reversed configuration) equilibria:

International Nuclear Information System (INIS)

Fuentes, N.O.; Sakanaka, P.H.

1990-01-01

Field-reversed configuration equilibria are studied by solving the Grad-Shafranov equation. A multiple coil system (main coil and end mirrors) is considered to simulate the coil geometry of CNEA device. First results are presented for computed two-dimensional FRC equilibria produced varying the mirror coil current with two different mirror lenghts. (Author)

INFOBECA'97

International Nuclear Information System (INIS)

Alvarez, Gustavo A.

1997-01-01

The publication collects the progress reports of the works performed in 1997 at the Ezeiza Atomic Center in the framework of the fellowship program of the National Atomic Energy Commission (CNEA) of Argentina. The reports cover activities in radiopharmacy, isotope and radiation applications, life sciences, geology, waste management as well as material sciences

Toxicity and utilization of chemical weapons: does toxicity and venom utilization contribute to the formation of species communities?

Science.gov (United States)

Westermann, Fabian L; McPherson, Iain S; Jones, Tappey H; Milicich, Lesley; Lester, Philip J

2015-08-01

Toxicity and the utilization of venom are essential features in the ecology of many animal species and have been hypothesized to be important factors contributing to the assembly of communities through competitive interactions. Ants of the genus Monomorium utilize a variety of venom compositions, which have been reported to give them a competitive advantage. Here, we investigate two pairs of Monomorium species, which differ in the structural compositions of their venom and their co-occurrence patterns with the invasive Argentine ant. We looked at the effects of Monomorium venom toxicity, venom utilization, and aggressive physical interactions on Monomorium and Argentine ant survival rates during arena trials. The venom toxicity of the two species co-occurring with the invasive Argentine ants was found to be significantly higher than the toxicity of the two species which do not. There was no correlation between venom toxicity and Monomorium survival; however, three of the four Monomorium species displayed significant variability in their venom usage which was associated with the number of Argentine ant workers encountered during trials. Average Monomorium mortality varied significantly between species, and in Monomorium smithii and Monomorium antipodum, aggressive interactions with Argentine ants had a significant negative effect on their mortality. Our study demonstrates that different factors and strategies can contribute to the ability of a species to withstand the pressure of a dominant invader at high abundance, and venom chemistry appears to be only one of several strategies utilized.

Reproductive Rights or Reproductive Justice? Lessons from Argentina.

Science.gov (United States)

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. Copyright 2015 Morgan. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original author and source are credited.

Co-operation Agreement. The Text of the Agreement of 25 May 1998 between the International Atomic Energy Agency and the Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials; Acuerdo de Cooperacion. Texto del Acuerdo de 25 de Mayo de 1998 entre el Organismo Internacional de Energia Atomica y la Agencia Brasileno-Argentina de Contabilidad y Control de Materiales Nucleares

Energy Technology Data Exchange (ETDEWEB)

NONE

1998-06-30

The text of the Co-operation Agreement between the International Atomic Energy Agency and the Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials is reproduced herein for the information of all Members. The Agreement entered into force on 25 May 1998, pursuant to Article 8 [Spanish] El texto del Acuerdo de Cooperacion entre el Organismo Internacional de Energia Atomica y la Agencia Brasileno-Argentina de Contabilidad y Control de Materiales Nucleares se reproduce en el presente documento para informacion de todos los Miembros. El Acuerdo entro en vigor el 25 de mayo de 1998 en conformidad con lo dispuesto en el articulo 8.

Characterization of the neutron flow for the implementation of an experimental analysis installation for rapid gamma activation in the Argentine Research Reactor RA-6

International Nuclear Information System (INIS)

Henriquez, C.; Gennuso, G.

2000-01-01

This is the final work to obtain a Diploma on Specialization in Application of Nuclear Technological Energy, carried out at the Research Reactor RA-6, from March to December 1999. Different work has been realized on the Tangential Tube N of the 500 KW Argentine RA-6 research reactor, in order to add a new technique to the present existing analytical methods. This Prompt Gamma Neutron Activation Analysis technique (PGNAA) requires a beam of collimated thermal neutrons, a lowest possible gamma radiation, and a thermal component of the biggest possible cadmium rate. It also must have a high resolution detection system for the measurement of the gamma radiation emitted after the capture of the neutron produced in the study sample. Continuing with the facility's technical requirements, a collimator was installed inside the N passing tube, in order to concentrate the neutrons coming from the nuclear core and also to compensate possible losses during the path. This collimator is 440mm long and 200 mm in diameter and consists of lead and steel cylinders with different size holes on the inside, so that it can deliver a 50 mm diameter beam of thermal collimated neutrons. Two 100 mm thick bismuth filters are inside the passing tube, to reduce the gamma component inside de beam, coming from the reactor core. This work aims to the characterization of the thermal and epithermal component of the neutron beam in the collimator and at the exit of it , and also to prove experimentally that the collimator achieves the technical specifications for which it was designed and built, specifically by verifying its functioning (degree of convergence of the beam obtained). On the other hand, it is necessary to learn about the PGNAA technique in order to define the technical requirements for its adequate operation. (author)

Las fracciones orgánicas del suelo: análisis en los suelos de la Argentina Soil organic matter fractions: analysis of Argentine soils

Directory of Open Access Journals (Sweden)

J.A. Galantini

2008-06-01

Full Text Available La materia orgánica (MO es el indicador utilizado con más frecuencia para evaluar la calidad del suelo; sin embargo, es escaso el conocimiento sobre sus efectos directos e indirectos. La MO es una mezcla heterogénea de compuestos orgánicos con propiedades diferentes. La separación de sus fracciones por métodos físicos, químicos y bioquímicos puede mejorar la comprensión del papel de la MO en el suelo. El objetivo de este trabajo fue analizar algunos estudios realizados aplicando principalmente métodos de fraccionamiento físico, particularmente en suelos de la Argentina. Las fracciones orgánicas separadas físicamente han demostrado ser indicadores sensibles a los efectos de las diferentes prácticas agronómicas. Debido a la variabilidad de la fracción lábil, el momento de muestreo, las condiciones edafoclimáticas y la metodología aplicada deben ser tenidas en cuenta para interpretar los resultados.Soil organic matter (SOM is the most frequently used indicator to evaluate soil quality; however, its direct and indirect effects are not well known. SOM is a heterogeneous mixture of organic compounds with different properties. Organic fraction separation by physical, chemical and biochemical methods can improve the understanding of the SOM role. The objective of this review was to analyze the information on physical fractionation methods applied to Argentine soils. Organic fractions physically separated are sensible indicators of the impacts of agronomic practices. The moment in which samples were taken, the climatic and soil characteristics, and the methodology used must be considered in interpreting the results due to the labile fraction variability.

Experiments on ballooning in pressurized and transiently heated Zircaloy-4 tubes

International Nuclear Information System (INIS)

Markiewicz, M.E.; Erbacher, F.J.

1988-02-01

Single-rod burst tests were performed with Atucha I Zircaloy-4 cladding tubes in the REBEKA burst equipment of KfK. The objective was to investigate the ballooning and burst behavior of argentine cladding tubes obtained from NRG, Germany and CONVAR, Argentina. The burst data were compared with those of cladding tubes used in german PWR's. It was found that the burst data e.g. burst temperature, circumferential burst strain and its response to azimuthal temperature differences are identical for the Argentine and German tubing quality. The burst data are in good agreement with those of German PWR-Zircaloy tubes. Thus, the fuel rod behavior codes developed for German PWR's can also be used for the Argentine reactor Atucha I. (orig.) [de

The IAEA Technical Cooperation Programme as a Knowledge Multiplier Mechanism for Nuclear Medicine — The Case of the Nuclear Medicine Knowledge Network in Argentina

International Nuclear Information System (INIS)

Belinco, M.; Boado Montero, G.; Di Lorenzo, D.; De Rose, G.

2015-01-01

This poster aims at: – Highlighting the relevance of the conformation of a Nuclear Medicine (NM) Network; – Shedding light on the influence of the IAEA TCP on the Network; – Emphasizing on the role of women as decision-makers in NM. CNEA together with the MINPLAN led the creation of the NM Network which now assembles 20 institutions. Its main purposes are: to strengthen ties among institutions; to federalize, spread and exchange knowledge in NM; to standardise protocols; to enhance interdisciplinary work and to harmonise the levels of capacity building nationally. These goals are reached through collaboration, teaching and research activities; already being attained through training in new Centers and the expansion of NM poles throughout the country within the framework of the National Programme of NM. NM has been a strategic area of the nuclear sector in Argentina since its beginning. There are three essential milestones for this continuity and for the establishment of this Network: NM as a state policy; the institutional policy within CNEA and the permanent support and acknowledgment from the IAEA. The geographic and demographic features of Argentina call for a federal working scheme such as the one carried out by CNEA; this has been replicated in a six-decade-networking among NM institutions and enhanced by including NM in the Public Health agenda. The IAEA TCP plays a key role as a knowledge multiplier mechanism in NM by supporting the creation of networks and endorsing the CPF 2014–2021 which fosters this cooperation link. Since 1976, thanks to the TCP, 456 people were trained and over 40 projects were financed in this area. Regarding female participation in NM, no gender barriers were observed, since the main decision-makers in this field are women, who handle issues sensitively, considering the direct impact NM has on people’s daily lives. (author)

Development of the Cerro solo deposit and uranium favorability of the San Jorge Gulf Basin, province of Chubut

International Nuclear Information System (INIS)

Navarra, P.R.; Benitez, A.F.

1997-01-01

In the future the uranium exploration activities of CNEA would tend to improve the knowledge of geology and uranium favorability; to perform prospection tasks, and research and development in exploration technologies, to contribute to be in a position to meet the requirements of the country in the long term. On the other hand, a strong growth of nuclear capacity is expected in the first two decades of the next century. Based on its promising grade, the Cerro Solo uranium ore deposit was selected in 1990 by the CNEA to carry out an assessment project. The intensive exploration level was accomplished, as follows: definition of general characteristics of the main orebodies; detailed geologic studies; estimation of resources with adequate data; and preliminary selection of mining-milling methods to estimate the potential profitability of the project. The deposit belongs to the sandstone type. The mineralized layers are distributed into the fluvial sandstones and conglomerates of the cretaceous Chubut Group, lying 50 to 130 m deep Resources of the deposit, with an average grade of 0.3% U, in tonnes of recoverable uranium at costs of up to $80/kg U, are: Reasonable Assured Resources (RAR): 800 t U, Estimated Additional Resources, Category I (EAR-I): 2100 t U. Follow-up drilling programmes are being performed at present in some of the target sites defined in the paleochannel that hosts the Cerro Solo deposit, in order to establish the hypothetical resources of the area. The sites were determined as a result of the exploration that CNEA conducted in the Pichinan uranium district. Recently a regional research project was formulated, for the detailed exploration in the San Jorge Gulf Basin, where the Chubut Group is distributed. 17 refs, 4 figs

UBERA-6 project: Achievements of 4 working years

International Nuclear Information System (INIS)

Blaumann, H; Fernandez, C; Dell Occhio, L; D Ovidio, C; Fabro, J; Miceli, M; Novara O; Perez, A; Taboada, H

2009-01-01

On May 2005 the President of CNEA created the UBERA-6 project, belonging to the former Technology and Environmental Management, with the aim to convert to Low Enriched Uranium (LEU) the RA-6 reactor core, to swap with the US Department of Energy (US-DoE) equivalent inventories of High Enriched Uranium (HEU) for LEU, to export to USA the spent HEU core and to recover and downblend to LEU remnant HEU inventories contained in fuel and irradiation target scraps. By means of two contracts signed by CNEA and US-DoE, acquisition of consumables and graphite reflectors, the fabrication of LEU core replacement, conditioning, transport and exportation of spent HEU core and subsequent supply of fresh LEU for fuel and irradiation targets used in our research reactors were costed. During July, 2006 468 HEU based fresh plates were exported to USA. On June 30th, 2007 the RA-6 reactor temporarily stopped working and its personnel remover the HEU core to the auxiliary pool. On November 7th the former spent HEU based core was exported to USA. During May and July, 2008 the new RA-6 reactor LEU based core and control assemblies were provided. During March, 2009 the RA-6 reactor became critical. For recovering and blending down of remnant HEU inventories, the Triple Height Laboratory (LTA) was refurbished. A Supplemental Agreement to one of the original contract between CNEA and US-DoE will financially support the refurbishment of the Radiochemical Facility Laboratory (LFR) and so reprocess irradiated HEU retained in radioisotope production filters to downblend into LEU, as well as the separation of the pair Sr90-Y90 and of Cs137 inventories for further application in Nuclear Medicine. [es

National Atomic Energy Commission. Decree No. 1540, August 30 1994

International Nuclear Information System (INIS)

1994-01-01

One of the objectives of the reorganization process of Argentina's public sector was to transfer to the private sector some of the Nation's productive activities, including those concerning the nuclear field. As a consequence, by Decree No. 1540 of August 30, 1994, (B.O. 2-Dec-94), CNEA's functions were partially reorganized. According to Decree No. 1540, the National Atomic Energy Commission (CNEA) maintained the missions and functions established by Decree-Law No. 22.498/56, with the exception of the regulation and surveillance of nuclear activities and the nuclear power generation activities. For the fulfillment of these activities, both the National Board of Nuclear Regulation (Ente Nacional Regulador Nuclear - ENREN) and Nucleoelectrica Argentina S.A. (NASA), were created. The National Board of Nuclear Regulation (ENREN), as an autarchical entity reporting to the Presidency of the Nation, shall be administered by a Board of Directors and shall be responsible for surveying and controlling all nuclear activities, shall suggest regulations and standards to ensure radiological and nuclear safety, personal protection, a controlled use of nuclear materials, licensing and surveillance of nuclear installations, and compliance with international safeguards. Nucleoelectrica Argentina S.A. (NASA) shall be organised as a corporation, reporting to the Ministry of Economy and Public Works and Services (Ministerio de Economia y Obras y Servicios Publicos) who will approve its statures. NASA shall take care of nuclear power generation at the Atucha I and Embalse nuclear power plants, as well as the construction, start-up and operation of the Atucha II nuclear power plant. As far as royalties are concerned, the Decree obliges Nucleoelectrica Argentina S.A. to pay CNEA for the performance of research and development activities, and to the ENREN an yearly regulatory tax per megawatt of installed nuclear power generation capacity. Also, Nucleoelectrica Argentina S.A. is declared

Basic and detail engineering development of PTAMB

International Nuclear Information System (INIS)

Beuter, Oscar; Reibel, Jose A.; Mirad, Andres E.; Furriel, Miguel; Diaz, L.

2009-01-01

The purpose of the future Treatment and Conditioning of Medium and Low Activity Solid and Liquid Waste Plant (PTAMB) of the National Atomic Energy Commission (CNEA) will be to put up medium and low activity solid and liquid waste and to verify the quality of the conditioned waste generated in Ezeiza Atomic Center (CAE), Constituyentes Atomic Center (CAC) and other national producers outside CNEA. The PTAMB is a Class I Radioactive Installation (according to Basic Standard AR 10.1.1, Rev. 3 RNA, paragraphs 17 and 22) also called Relevant Installation. The aim of this document is to list the steps that carried out the Projects Department of the National Program of Radioactive Waste Management (PNGRR) to arrive to the realization of the detailed engineering of the plant. The project is in Public Tender stage and the beginning of the construction would be March 2010. Once built, the Plant will process the radioactive waste contained in the conceptual engineering, offering more precise control of these and their compatibility with the new final disposal systems to build. (author)

The Development of Low-Level Measurement Capabilities for Total and Isotopic Uranium in Environmental Samples at Brazilian and Argentine Laboratories by ABACC

International Nuclear Information System (INIS)

Guidicini, Olga M.; Olsen, Khris B.; Hembree, Doyle M.; Carter, Joel A.; Whitaker, Michael; Hayes, Susan M.

2005-01-01

In June 1998, the Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials (ABACC), with assistance from the U.S. Department of Energy (DOE), began a program to assess environmental sampling and analysis capabilities at laboratories in Argentina and Brazil. The program began with staff training conducted in South America and the United States by Oak Ridge National Laboratory (ORNL) and Pacific Northwest National Laboratory (PNNL). Both laboratories are participating members of DOE's Network of Analytical Laboratories (NWAL) that support IAEA's environmental sampling program. During the initial planning meeting, representatives from ABACC and all the participating analytical laboratories supporting ABACC were briefed on how the first exercise would be managed and on key aspects necessary to analyze low-level environmental samples for uranium. Subsequent to this training, a laboratory evaluation exercise (Exercise 1) was conducted using standard swipe samples prepared for this exercise by the International Atomic Energy Agency (IAEA). The results of Exercise 1 determined that sample contamination was a major factor in the analysis, and a thorough review of laboratory procedures was required to reduce the level of contamination to acceptable levels. Following modification of sample preparation procedures, the laboratories performed Exercise 2, an analysis of a National Institute of Standards and Technology (NIST) Standard Reference Material (SRM) 1547, Peach Leaves. The results of Exercise 2 demonstrated that several laboratories were capable of accurately determining the total uranium and uranium isotopic distribution in the peach leaves. To build on these successes, Exercise 3 was performed using a series of standard swipe samples prepared by the IAEA and distributed to laboratories supporting ABACC and to PNNL and ORNL. The results of Exercise 3 demonstrate that ABACC now has support laboratories in both Argentina and Brazil, which are capable of

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

A calculating alliance.

Science.gov (United States)

Alanis, M; Sippel, S

1999-01-01

This article discusses the effects of the alliance between the Church and the Argentine state on women's reproductive rights. Several commentators have criticized how President Carlos Menem used the campaign against abortion for his own political interest. He issued a presidential decree on antiabortion campaign--the Day of the Unborn Child. This decree was announced on December 8, 1998, and the day of observance is March 25 of every coming year. Although the Argentine government does not have a law that explicitly regulates family planning method for the last two decades, many Argentines find the action of the president selfish. The initiation of this presidential decree was the culmination of Menem's manipulation of church and state to secure clerical support for his political regime. Even if statistics is providing him with data concerning the effects of unclear reproductive health laws, he and the church still has chosen not to focus on reproductive rights exclusively, but have concerned themselves primarily with other social and economic issues. While Menem uses the Vatican's pro-life rhetoric and his presidential power to protect fetal life, Argentines will have to contend with the existing Menem policies, which compromise the health of women and children.

Study of canine parvovirus evolution: comparative analysis of full-length VP2 gene sequences from Argentina and international field strains.

Science.gov (United States)

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.

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