Radon as an environmental risk: concentration measurements in family buildings at Cordoba city

International Nuclear Information System (INIS)

Bonzi, A.; Murua, C.; Martin, H.R.

1992-01-01

Measurements of radon concentration at homes are usual activities in the last years at the countries with uranium in their soils. On the other hand, the man's radiological protection about radiation is related to the environmental actions for a healthy life, but not much known for a public. The great quantities of ore with uranium can be an important source of irradiation when they are used as building materials. The soils are important too for the emanations of radon in the interior of buildings and for these reasons, the radon concentration measurements in Cordoba familiar houses were implemented in the summer of 1991. The Alpha Track Technique and the results obtained indicate the need of other measurements and a winter measurement for investigation variations of radon concentration. The typical values measured were low, about 4.13 Bq/m 3 if they are compared with other Argentine values measured. This paper discusses the procedure, techniques and criteria used in the work held in Cordoba city, Argentina. (Author)

Design of the containment structure in prestressed concrete for the Embalse-Cordoba Nuclear Power Plant

International Nuclear Information System (INIS)

Godoy, A.R.; Marinelli, C.A.; Gruenbaum, C.E.

1978-01-01

The design of a typical prestressed concrete containment structure for a 600 MW Candu - PHW Reactor, presently under construction at Embalse - Cordoba, Argentina is briefly described. The structural behaviour , adcpted prestressing system and tendon pattern are described. Afterwards the evaluation of the prestressing forces as well as the losses assessment and the prestressing sequence are discussed. Finally, some conclusions are drawn in the light of the experience gained at different stages of the construction. (Author)

On the use of the lichen Ramalina celastri (Spreng.) Krog. and Swinsc. as an indicator of atmospheric pollution in the province of Cordoba, Argentina, considering both lichen physiological parameters and element concentrations

International Nuclear Information System (INIS)

Jasan, R.C.; Pla, R.R.; Verburg, T.G.; Wolterbeek, H.Th.; Pignata, M.L.

2004-01-01

The lichen Ramalina celastri (Spreng.) Krog. and Swinsc. was used to study trace-element atmospheric pollution in Cordoba (Argentina). 38 samples from a 1999 campaign were analyzed by NAA and a number of physiological parameters was determined. In first-ever comparisons, no correlations were found between altitude, physiological parameters and determined elements, which allowed the full comparison of element data in lichen samples throughout the whole survey area. After the application of Monte Carlo assisted factor analysis to the elemental matrix, five source profiles were found and mapped. The attribution of the sources is discussed. (author)

Individual differences in arsenic metabolism and lung cancer in a case-control study in Cordoba, Argentina

International Nuclear Information System (INIS)

Steinmaus, Craig; Yuan Yan; Kalman, Dave; Rey, Omar A.; Skibola, Christine F.; Dauphine, Dave; Basu, Anamika; Porter, Kristin E.; Hubbard, Alan; Bates, Michael N.; Smith, Martyn T.; Smith, Allan H.

2010-01-01

In humans, ingested inorganic arsenic is metabolized to monomethylarsenic (MMA) then to dimethylarsenic (DMA), although in most people this process is not complete. Previous studies have identified associations between the proportion of urinary MMA (%MMA) and increased risks of several arsenic-related diseases, although none of these reported on lung cancer. In this study, urinary arsenic metabolites were assessed in 45 lung cancer cases and 75 controls from arsenic-exposed areas in Cordoba, Argentina. Folate has also been linked to arsenic-disease susceptibility, thus an exploratory assessment of associations between single nucleotide polymorphisms in folate metabolizing genes, arsenic methylation, and lung cancer was also conducted. In analyses limited to subjects with metabolite concentrations above detection limits, the mean %MMA was higher in cases than in controls (17.5% versus 14.3%, p = 0.01). The lung cancer odds ratio for subjects with %MMA in the upper tertile compared to those in the lowest tertile was 3.09 (95% CI, 1.08-8.81). Although the study size was too small for a definitive conclusion, there was an indication that lung cancer risks might be highest in those with a high %MMA who also carried cystathionine β-synthase (CBS) rs234709 and rs4920037 variant alleles. This study is the first to report an association between individual differences in arsenic metabolism and lung cancer, a leading cause of arsenic-related mortality. These results add to the increasing body of evidence that variation in arsenic metabolism plays an important role in arsenic-disease susceptibility.

Geochemistry of uranium in ground waters of the Conlara river Valley, San Luis and Cordoba provinces (Argentina)

International Nuclear Information System (INIS)

Nicolli, H.B.; Gamba, M.A.

1979-01-01

Geochemical characteristics of ground waters related with lixiviation, transport and precipitation of uranium in the Conlara river valley (provinces of San Luis and Cordoba (Argentina)) are studied. Anions and cations' distributions, together with hardness, specific conductivity, pH, Eh, and uranium and vanadium contents, have been studied. Those parameters characterize four hidrogeochemical facies along an E-W profile: a calcic strong bicarbonate facies, an alkaline-calcic bicarbonate facies, an alkaline sulfate facies, and a strong alkaline sulfate facies. An ''Interphase zone'' (transition from bicarbonate water to sulfate water), where changes in composition may define a geochemical environment capable of UO2 precipitation, has been determined. The chemical-Thermodynamic studies give a dominance of UDC and UTC complexs ions (even in sulfate waters), so they represent the 99% of present ions. Besides, the calculated values required for equilibrium with uraninite or carnotite resulted much greater than those obtained in the performed experiments. It means that the precipitation of those minerals requires either the presence of greate amounts of uranium or vanadium, or a reducing environment with Eh values smaller than the observed ones. Finally, the steps to be taken in future investigations are suggested in view to a drilling plan where: 1) Priority to the ''Interphase zone'' areas is given. 2) The deepest aquifers in Tertiary sediments of the basin have to be reached in order to get the convenient environmental conditions (i.e. smallest Eh values) for uranium or uranium-vanadium precipitation. (author) [es

Groundwater contamination with arsenic and other trace elements in an area of the Pampa, province of Cordoba, Argentina

International Nuclear Information System (INIS)

Nicolli, H.B.; Suriano, J.M.; Gomez Peral, M.A.; Ferpozzi, L.H.; Baleani, O.A.

1989-01-01

A geochemical study of the groundwater of the pampa in the province of Cordoba, Argentina, is reported. Physical-chemical parameters, dissolved solids, and seven trace elements were determined in 60 selected water samples. Systematic and accurate measurements of arsenic, fluorine, and vanadium were performed for the first time. The geographic distribution of the seven trace elements was mapped and its correlation with the anion-cation composition of the water was studied. Eighty-four percent of the water analyzed showed arsenic contents over 0.05 mg/l. The maxima for arsenic, fluorine, vanadium, and uranium contents were found in the western part of the study area, in waters dominated by alkali metal cations. Maximum selenium and antimony contents were found in the eastern part of the areas, whereas molybdenum distribution showed no relationship to the other groups. The movements of the subsoil have disturbed surface and subsurface drainage, thus influencing the water salinity and trace element contents. To investigate the origin of contamination, 54 loess samples were collected at wells in depths ranging from the surface down to the water table. This loess, which has a high proportion of volcanic components, mainly rhyolitic glass, exhibits a chemical composition corresponding to that of a dacite. The loess and volcanic glass show anomalous contents of all contaminant trace elements, mainly arsenic and selenium. For this reason, loess is considered to be the most important source of contamination of this ground water area. 30 refs., 6 figs., 9 tab

Meiotic behavior of two polyploid species of genus Pleurodema (Anura: Leiuperidae from central Argentina

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Nancy E. Salas

2014-06-01

Full Text Available Polyploidy is an important evolutionary force but rare in vertebrates. However, in anurans, the genus Pleurodema has polyploid species, two of them tetraploid and one octoploid. The manner in which the chromosomes join in diakinesis can vary among species and, crucially, if they differ in their ploidy levels. In this work, we describe the meiotic configurations in two cryptic species from central Argentina, with different ploidy levels, Pleurodema kriegi (tetraploid and P. cordobae (octoploid. A total of 306 diakineses from 19 individuals were analyzed. In meiosis, P. kriegi form 22 bivalents, whereas P. cordobae exhibits variation in meiotic figures. We discuss the possible allo- and autopolyploid origin of these species, and we consider that the autopolyploid origin of P. cordobae from P. kriegi might be the most feasible.

A Ideia de Universidade no Brasil: Influencia do Movimento de Cordoba (The Idea of the University in Brazil: Influences of the Cordoba Movement).

Science.gov (United States)

Mazzilli, Sueli

2000-01-01

Examines influences of the Cordoba Movement in formulation of ideas concerning the inseparability among teaching, research, and extension--a new paradigm for the Brazilian university. Finds the formulation of this inseparability had its origins in the Brazilian student movement of the 1960s which included theses of the Cordoba Manifesto. (BT)

Social wasps (Polistinae from Pampa Biome: South Brazil, Northeastern Argentina and Uruguay

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Alexandre Somavilla

2017-08-01

Full Text Available Abstract. This study aimed to determine social wasps’ species from Pampa Biome. Were examined samples of social wasps from south-central of Rio Grande do Sul state (Brazil, parts of Buenos Aires, Entre Rios, Corrientes, Cordoba, Santa Fé and La Pampa provinces (Argentina and in Uruguay maintained in the Coleção Entomológica de Santa Cruz do Sul (Santa Cruz do Sul-Brazil, American Museum of Natural History (USA, Natural History Museum (London-United Kingdom and Muséum National d’Histoire Naturelle (Paris-France. Thirty species were recorded: Agelaia (01, Brachygastra (01, Mischocyttarus (04, Polistes (15, Polybia (08 and Protonectarina (01. Vespas sociais do Bioma Pampa: sul do Brasil, nordeste da Argentina e Uruguai. Resumo. Este estudo objetivou determinar as espécies de vespas sociais provenientes do Bioma Pampa. Foram examinadas vespas sociais provenientes de coletas da região centro-sul do Rio Grande do Sul (Brasil, parte das províncias de Buenos Aires, Entre Rios, Corrientes, Cordoba, Santa Fé e La Pampa (Argentina e Uruguai depositadas na Coleção Entomológica de Santa Cruz do Sul (Santa Cruz do Sul-Brasil, American Museum of Natural History (Nova Iorque-USA, Natural History Museum (Londres-Reino Unido e Muséum National d’Histoire Naturelle (Paris-França. Trinta espécies foram registradas: Agelaia (01, Brachygastra (01, Mischocyttarus (04, Polistes (15, Polybia (08 e Protonectarina (01.

ESTUDIOS CROMOSOMICOS EN ESPECIES ARGENTINAS DE VERNONIA (ASTERACEAE

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Massimiliano Dematteis

1996-01-01

Full Text Available Se estudian los cromosomas de once especies de Vernonia de Argentina. Los resultados incluyen el recuento en siete especies que nunca se han investigado citológicamente. Los cariotipos de seis taxones son analizados, cinco de ellos se describen por primera vez sobre: V. chamaedrys n = 17, 2n = 34 = 22m + 12 sm; V.loretensis n= 17, 2n = 34 = 20 m + 14 sm; V.rubricaulis n = 16, 2n = 32 = 20m + 12sm; V.remotiflora n = 14, 2n = 28 = 16m + 12sm y V.lepidifera n= 10, 2n = 20 = 8 m + 12sm. El registro de 2n = 4x = 28 para V.remotiflora apoya la existencia del número cromosómico básico x = 7. En un inoforme previo un conteo de cromosomas muestra que Vernonia es multibasic con x = 7, 9, 10, 11, 12, 15, 17 y 19. La importancia de los resultados se discuten en relación a los datos cromosómicos disponibles para el género

Hydrological behaviour of sealing under different soil management conditions in the Center South Cordoba, Argentina

International Nuclear Information System (INIS)

Bricchi, E.

2004-01-01

The susceptibility of soils to form seals induced by rain depends on a combination of physical, chemical and biological processes, which are, indeed, affected by climatic characteristics and the type of soil. If we consider the weather factors, the energy of rain, as a function of quantity and intensity, is the most important one. The soil properties that favor the formation of sealing are texture, organic matter content, structural stability and sodium adsorption relationship. Regarding texture, silt is the particle, which is most highly involved. In central Argentina, specifically in the central southern region of Cordoba Province, the most representative soils show a low content of clays and a high content of silt and fine sand. This land has undergone different production systems, not only agricultural ones but also combined systems, as summer crops, with intense labouring and scarce, even lacking, stubble supply. Therefore these soils have had important loss in organic matter, degradation of the structure of the superficial horizons. It became necessary, then, to look for a combination of technologies leading to an energy input throughout conservation tillage systems, soil covering and agrochemicals which tend to improve soil quality in order to obtain a sustainable production. The trial was conducted by using a simple at-random design with two repetitions for each treatment. Only in F the initial saturated hydraulic conductivity (K si ) (non-sealing condition) and the final hydraulic conductivity (K sf ) (sealing conditions) were determined in the superficial of soil in 2000, by means of a rain simulator using an intensity up to 50 mm/h for 60 minutes (kinetic energy of 0.1336 J.cm -2 ). The K s values obtained by applying Darcy's equation were used to fit the Horton type exponential decay function which describes Ks as a function of the time of exposure to a simulated rain. It can be concluded that the removal of natural vegetation and crop systems have

Age-related seroprevalence study for St. Louis encephalitis in a population from Cordoba, Argentina Estudo da prevalência para vírus da encefalite St. Louis relacionado com a idade em uma população de Córdoba, Argentina

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Lorena Ivana SPINSANTI

2002-04-01

Full Text Available A serological screening was performed in 615 individuals aged 0-87 years, living in the city of Cordoba, Argentina to study the relationship between antibody prevalence for the SLE virus and age. A 13.98% prevalence of neutralizing antibodies was obtained and its relation to age was significantly high (p = 0.045. The highest seroprevalence was noted on individuals over 60 years old (>20%, whereas no subject under 10 was seropositive for this virus. Our results confirm that the agent is endemic in this area and neurological pathology studies should be performed on those individuals aged 60 since they represent the most susceptible group to SLE virus.Com a finalidade de estudar a relação entre prevalência de anticorpo para o vírus da encefalite St. Louis (ESL e a idade, foram analisados 615 soros de indivíduos entre 0-87 anos de idade, morando na cidade de Córdoba, Argentina. Detectou-se uma prevalência de anticorpos neutralizantes de 13,98% e observou-se uma relação com a idade estatisticamente significante (p = 0,045. A soroprevalência mais alta foi encontrada em indivíduos de mais de 60 anos (> 20%, enquanto nenhum com menos de 10 anos foi soropositivo para este vírus. Nossos resultados confirmam que o agente é endêmico nesta área. Por esse motivo os autores sugerem que deveríam se realizar estudos de patologias neurológicas nesses indivíduos de 60 anos de idade dado que eles representam o grupo mais suscetível ao vírus ESL.

Searching pristine source of two gabbric plutons outcroping in Central Sierras Pampeanas Range, Argentina

International Nuclear Information System (INIS)

Daziano, C.; Ayala, R.

2010-01-01

This work is about the study of two gabbric plutons outcrop ing throughout Central Sierras Pampeanas range (Cordoba province, Argentina). San Lorenzo hill gabbric plutons is in the Upper proterozoic age whereas Cañada del Puerto belongs to the Early proterozoic.They are stock-type igneous bodies and they are intrusive s in an Upper Precambrian crystalline basement; it is mainly composed by gneisses, migmatites, schistes, marbles, amphibolite s, tact's, serpentinites and related rocks

Alteraciones cromosómicas diagnosticadas en sangre periférica

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Irenia Blanco Pérez

2013-12-01

Full Text Available Introducción: el estudio citogenético en linfocitos de sangre periférica es un medio diagnóstico muy solicitado por diferentes especialidades médicas, es utilizado ampliamente para diagnosticar diferentes cromosomopatías de origen genético. Objetivo: describir las principales alteraciones cromosómicas diagnosticadas en sangre periférica en la Provincia de Pinar del Río a partir de enero del año 2007 hasta diciembre del 2011. Material y método: se efectuó un estudio descriptivo de tipo retrospectivo en 831 pacientes que fueron remitidos al Centro Provincial de Genética Médica. La muestra la conformaron 117 pacientes que resultaron positivos al mostrar en su cariotipo hallazgos de cromosomopatías. Se analizaron: el motivo de indicación, la cantidad de diagnósticos realizados, los tipos de anomalías detectadas. Resultados: en el período estudiado se detectaron 68 casos positivos, el orden de frecuencia de las anomalías cromosómicas fue: las aberraciones estructurales (60.6 %, aberraciones numéricas (34.1 % y mosaicos (5.1 %. Las principales alteraciones correspondieron a trisomías, translocaciones y polimorfismos cromosómicos, sobre todo del cromosoma 9. Conclusiones: los resultados de este estudio se comportan de manera similar con los reportados en la bibliografía revisada y confirma la alta prevalencia de alteraciones cromosómicas en la población de Pinar del Río, donde cabe destacar, la importancia del estudio citogenético en sangre periférica a las personas con antecedentes de abortos espontáneos, infertilidad, dismórfias, reordenamientos cromosómicos balanceados, entre otros, con el fin de establecer un diagnóstico certero, oportuno y proporcionar un buen asesoramiento genético.

Eliminación de cromo de efluentes ácidos, mediante adsorción con wollastonita natural

OpenAIRE

Martín Antonio Encinas Romero; Luis Alberto Núñez Rodríguez; Agustín Gómez Álvarez; Guillermo Del Carmen Tiburcio Munive

2015-01-01

El presente trabajo evalúa las características de la remoción de cromo con wollastonita natural a partir de soluciones sintéticas de cromo (VI) en medio ácido. Para realizar este estudio se desarrolló un diseño factorial 23 en el cual se estudiaron los factores: relación sólido/líquido, concentración de cromo en solución y temperatura. Se analizó el efecto de los factores principales y sus interacciones sobre el porcentaje de remoción de cromo mediante análisis gráficos. Asimismo, se desarr...

Eliminación de cromo de efluentes ácidos, mediante adsorción con wollastonita natural

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Martín Antonio Encinas Romero

2015-05-01

Full Text Available El presente trabajo evalúa las características de la remoción de cromo con wollastonita natural a partir de soluciones sintéticas de cromo (VI en medio ácido. Para realizar este estudio se desarrolló un diseño factorial 23 en el cual se estudiaron los factores: relación sólido/líquido, concentración de cromo en solución y temperatura. Se analizó el efecto de los factores principales y sus interacciones sobre el porcentaje de remoción de cromo mediante análisis gráficos. Asimismo, se desarrolló una ecuación de predicción del porcentaje de remoción de cromo en función de los efectos principales e interacciones más significativas, obteniendo correlaciones satisfactorias entre la información experimental y la predicha por la ecuación.

Radon gas inside historical buildings in the city of Cordoba

International Nuclear Information System (INIS)

Perez, R.; Germanier, A.; Rubio, M.; Sbarato, D.; Zappino, R.

1998-01-01

Full text: In this work measurements of the Radon ( 222 Rn) concentration in the inside of historical buildings which date back to the end of the 17th and the beginning of the 18th Centuries have been carried out in the city of Cordoba (Argentina). Meteorological factors such as room temperature and atmospheric pressure have not shown to affect, to a great extent, the results obtained. By comparing the concentration of 222 Rn in environments at different levels we inferred that the soil underlying the buildings does not represent an important source of 222 Rn. The main occurrence of the element was found in room walls, which shows that local building materials are an important source of 222 Rn. Among the materials used in these buildings are granitic rocks, and to a lesser extent, lime, sand and marble. The 222 Rn concentrations recorded in some of the rooms surveyed reach values which are close to the minimum intervene level set by international standards in 4pCi/l. The study of the effects of ventilation in the concentration of 222 Rn allows us to conclude that its values decrease to accepted levels by means of a natural and efficient ventilation of the rooms. (author) [es

ADSORCIÓN DE CROMO HEXAVALENTE EN LA CÁSCARA DE ARROZ MODIFICADA QUÍMICAMENTE

OpenAIRE

Nancy Eggs; Susana Salvarezza; Ricardo Azario; Nicolás Fernández; María del C. García

2012-01-01

El objetivo del presente estudio fue analizar los factores cinéticos que afectan la adsorción de cromo (VI) en solución empleando como bioadsorbente la cáscara de arroz modificada químicamente, con hidróxido de potasio 1% m/m o con ácido fosfórico 1M. Se estudió la adsorción de cromo (VI) considerando los siguientes parámetros pH, tiempo de incubación, masa del bioadsorbente y concentración inicial del tóxico. La determinación de cromo hexavalente y total se realizó por el método de la difeni...

Considerações sobre cromo, insulina e exercício físico Consideraciones sobre cromo, insulina y ejercicio fisico Considerations about chromium, insulin and physical exercise

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Mariana Rezende Gomes

2005-10-01

Full Text Available O cromo é um mineral-traço essencial presente em diminutas proporções em alguns alimentos como carnes, cereais integrais, oleaginosas e leguminosas. Atualmente, esse mineral tem sido utilizado como suplemento alimentar no meio esportivo com a proposta de promover maior ganho de massa muscular e maior perda de gordura corporal. Todavia, a participação do cromo no metabolismo resume-se ao aumento da sensibilidade à insulina, por meio da ligação de quatro átomos de cromo a uma proteína intracelular específica denominada apocromodulina, que, por sua vez, liga-se ao receptor de insulina de células de tecidos periféricos concomitantemente à insulina, porém em outro sítio localizado no domínio intracelular. Essa ligação amplifica a cascata de sinais intracelulares responsáveis pelo estímulo da translocação de GLUT4 e, conseqüentemente, aumenta a captação de glicose e aminoácidos. O cromo também inibe a enzima-chave da síntese de colesterol, melhorando o perfil lipídico de indivíduos com dislipidemias. Não são significativas as alterações de composição corporal em esportistas, mas, por outro lado, a suplementação com cromo pode, em alguns casos relatados, melhorar o perfil lipídico e o quadro de diabetes tipo 2 de indivíduos que sofrem destes desequilíbrios metabólicos.El cromo es un mineral traza esencial presente en proporciones pequeñas en algunos alimentos como carnes, cereales integrales, oleaginosas y leguminosas. Actualmente, este mineral ha sido utilizado como suplemento alimenticio en el medio deportivo con la propuesta de promover mayor ganancia de masa muscular y mayor pérdida de grasa corporal. Todavía, la participación del cromo en el metabolismo se resume al aumento de la sensibilidad a la insulina, por medio de la unión de cuatro átomos de cromo a una proteína intracelular específica denominada apocromodulina que, a su vez, se liga al receptor de insulina de células de tejidos perif

Popularization of science and nuclear technology in Cordoba

International Nuclear Information System (INIS)

Martin, Hugo R.

2012-01-01

Whereas in our country's scientific and technological development are essentially in the hands of the State, conducting scientific outreach massive level, involve a degree of commitment by the state led to that effect. Responding to this premise, in 2012, took place in Cordoba some outdoors communication actions. This paper describes the main characteristics of them, specifying those aspects related to the spread of national nuclear activities within that framework. From a focus on science popularization and under the names of 'Scientific and Technological Cordoba Tourism' and 'Science and Technology in the popular events of Cordoba', dissemination events were held in places accessible to the public: beaches, rivers and pedestrian areas of the main cities of the province. It was organized by the Direction of Disclosure and Science Education, Ministry of Science and Technology of Cordoba, which called for researchers from participating institutions, among whom were those related to national nuclear activities. Simple experiments were presented, video projections, street and dissertations astronomical observations with discussion on various topics. The objective was to capitalize on the potential attractiveness of some physical and chemical phenomena curious, to summon people who were enjoying their free time. Those responsible for the activities were researchers, in several cases with doctoral level and calling for the release, as well as professionals in educational sciences. Some of the activities involved in the group's visit transcendent opportunity celebrations in the interior provincial, or events with massive public support. In the case of atomic energy the approach used was based on natural radioactivity and radiation. From the point of view of the results obtained, it can be said that the popularization of science and technology has begun to present itself as an alternative learning of citizenship, which has been well received

Source Hierarchy List. Volume 3. O through Z

Science.gov (United States)

1994-07-01

UNIVERSIDAD NACIONAL DE CORDOBA 387102 (ARGENTINA) 01 UNIVERSIDAD NACIONAL DE CORDOBA 4O5530 (ARGENTINA) INSTITUTO DE CIENCIAS QUIMICAS ...UNIVERSIDADE ESTADUAL DE CAMPINAS 426597 (BRAZIL) 01 UNIVERSIDADE ESTADUAL DE CAMPINAS (BRAZIL) FACULDADE DE ENGENHARIA * 5133 398130 UNIVERSIDADE...UNIVERSIDADE FEDERAL DE SAD CARLOS 420497 (BRAZIL) 01 UNIVERSIDADE FEDERAL OE SAO CARLOS (BRAZIL) OEPT OE ENGENHARIA DE MATERIALIS

Profundidad del surco gingival en dientes primarios restaurados con coronas de acero cromo

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Rubén Muñoz Delgado

2015-01-01

Full Text Available Objetivo: Evaluar la relación entre el ajuste marginal y la profundidad del surco gingival en dientes primarios restaurados con coronas de acero cromo. Métodos: Se midió la profundidad del surco gingival de 114 dientes primarios restaurados con coronas de acero cromo en 67 niños, ambos sexos, de 3 a 6 años de edad de la clínica de Estomatología Pediátrica de la UATx, México. La población en estudio fue dividida en tres grupos: a experimental (n=30, b control (n=8, y c control negativo (n=29. Previo consentimiento informado se tomaron los índices de placa (LöeSilness 1967 e índice gingival en seis superficies; se midió el surco gingival con sonda periodontal y las coronas de acero cromo fueron evaluadas clínica y radiográficamente según su ajuste marginal y longitud cervical. Resultados: Los índices de placa y gingival no mostraron diferencias significativas para los grupos experimental y control negativo. El 34% de las coronas mostraron buen ajuste marginal, 33% un mal ajuste, 10.5% cortas, 7.9% largas y el 14% otro tipo de mal ajuste. La profundidad del surco gingival fue estadísticamente significativa para el primer y segundo molar inferior derechos y en los caninos inferiores (p >0.05; la superficie disto-vestibular presentó la mayor profundidad del surco gingival (2.34 mm, siendo estadísticamente significativa (p>0.05. Conclusiones: La profundidad del surco gingival fue mayor en los dientes rehabilitados con coronas de acero cromo mal ajustadas y sobre contorneadas (largas. La presencia de placa bacteriana y gingivitis estuvo relacionada con las coronas de acero cromo mal ajustadas.

Intervention and peasant organization. The case of Copacabana in the province of Cordoba (Argentina

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Guillermo Ferrer

2013-12-01

Full Text Available Most of the researchers who work with rural development subjects agree that the social organizations are essential for the rural population to play a role in their own development. Therefore, the organization is a necessary condition for the rural development, and the problem lies in establishing the correct methodology to promote it. In Copacabana, a rural town in the northern mountainous province of Cordoba, we ask: How does one handle family farmers, tensions between individual strategy, and collective action to solve their problems? We conclude that for campesinos is not easy to allocate the social investments required to develop a long-lasting organization. Campesinos’ wishes to reap the benefits stemming from organization are not enough to actually develop a reliable organization. It is also required an appropriate balance between the individualistic tendencies of their members and their collective needs. To overcome the tensions arising within organizations it is necessary to create a process of constructive participation that allows (a that the whole group becomes committed with the aims originally proposed, but at the same time to be flexible enough to modify and recreate them; and (b to establish a set of rules allowing the access to new members, and transparent mechanisms of social control which are accepted and shared by all members. In many cases this process may be favored by the participation of external social actors

Determination of heavy metals and other elements by Neutron Activation Analysis in sediment cores of laguna Mar Chiquita (Cordoba, Argentina)

International Nuclear Information System (INIS)

Larizzatti, Flavio Eduardo

2001-01-01

Laguna Mar Chiquita is one of the largest water bodies of South America. It is a big lake of saline waters, and its geographic localization is SOMS' S, 62 deg 30' W, about 150 km Northwest of Cordoba, Argentina. Due to its large variability of hydrological budget, surface and water levels produced periods of low stands (LLP) and high stands (HLP). This fluctuation of water level also produces substantial changes in the water salinity. The principal tributary of the Laguna Mar Chiquita is Dulce River and also receives water from two other rivers: Suquia and Xanaes. The Suquia River drains in a small satellite lake, the Laguna del Plata. The purpose of the present work was to investigate the sediment composition of the Laguna Mar Chiquita (2 sediment cores) and del Plata (one sediment core) by using Neutron Activation Analysis (NAA) technique. The three 60 cm long sediment cores, sliced each 2 cm, were analyzed and 26 elements were determined (As, Ba, Br, Ce, Co, Cr, Cs, Eu, Fe, Hf, La, Lu, Na, Nd, Rb, Sb, Sc, Se, Sm, Ta, Tb, Th, U, Yb, Zn e Zr). Other complementary techniques were utilized: macro elements (Al, Ca, Fe, K, Mg, Mn, Na, P, Si, Ti) were determined by X-ray fluorescence, and the mineralogical composition of the sediments was determined by X-ray diffraction. The results obtained did not show any indication of anthropic contribution in the sediment composition, and concentration of the majority of the elements analyzed is uniform along the entire profile of the analyzed core. Statistical analysis of elemental concentrations (Cluster Analysis) reflects that in Laguna del Plata the fine fractions of the sediments is dominated by detrital minerals, while in the Laguna Mar Chiquita, the neo formed minerals are the principal components. In both lakes, it was possible to identify compositional variations in the sediment segments, which may correspond to temporal fluctuations in the sedimentation conditions. The statistical analysis associated to sedimentation

ADSORCIÓN DE CROMO HEXAVALENTE EN LA CÁSCARA DE ARROZ MODIFICADA QUÍMICAMENTE

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Nancy Eggs

2012-01-01

Full Text Available El objetivo del presente estudio fue analizar los factores cinéticos que afectan la adsorción de cromo (VI en solución empleando como bioadsorbente la cáscara de arroz modificada químicamente, con hidróxido de potasio 1% m/m o con ácido fosfórico 1M. Se estudió la adsorción de cromo (VI considerando los siguientes parámetros pH, tiempo de incubación, masa del bioadsorbente y concentración inicial del tóxico. La determinación de cromo hexavalente y total se realizó por el método de la difenilcarbazida y por espectrofotometría de absorción atómica, respectivamente. El tratamiento químico con hidróxido de potasio o con ácido fosfórico de la cáscara de arroz produjo un aumento en la adsorción del tóxico. El análisis cinético de la adsorción de cromo (VI sugiere que el proceso es favorable cuando se trabaja a pH ácido (inferior a 2, se incrementa con la masa de bioadsorbente y con el tiempo de contacto.

Bacillus sp. G3 un microorganismo promisorio en la biorremediación de aguas industriales contaminadas con cromo hexavalente

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Alexander Mora Collazos

2016-01-01

Full Text Available Introducción: El presente trabajo tuvo como objetivo identificar y caracterizar microorganismos provenientes de un agua residual industrial potencialmente útiles en biorremediación de aguas contaminadas con cromo hexavalente. Metodología: Se realizó el aislamiento de tres microorganismos partiendo de un agua residual industrial proveniente de una empresa de galvanoplastia. Se evaluó el potencial de los microorganismos aislados en su capacidad para reducir cromo hexavalente; escogiéndose al aislado bacteriano G3 por mostrase potencialmente útiles en biorremediación de cromo hexavalente. Se realizó la caracterización morfológica, bioquímica e inferencias filogenéticas basadas en el gen del ARNr 16S del aislado seleccionado; se evaluó el potencial de reducción de cromo hexavalente asociado a la actividad microbiana y la actividad enzimática utilizando un extracto libre de células; de forma adicional, se realizaron bioensayos de reducción de cromo evaluando la acción conjunta de los 3 microorganismos. Resultados: Los datos moleculares y pruebas bioquímicas sugieren que el asilado bacteriano G3 pertenece al grupo de Bacillus cereus sensu lato. Los bioensayos de reducción de cromo hexavalente (10 mg/L realizados con Bacillus sp. G3 mostraron una reducción química del 100% del contaminante al cabo de diez horas en medio LB y de 34 horas en agua residual industrial. El extracto libre de células obtenido a partir del aislado bacteriano G3 mostró actividad de cromato reductasa al reducir el cromo hexavalente a su forma trivalente, mostrando valores óptimos de actividad relativa a 28ºC y 6.5 de pH. La acción conjunta de los microorganismos sobre la reducción de cromo se mostró cinco veces menos eficiente que los ensayos realizados solo con la cepa G3. Discusión o conclusión: Los resultados sugieren, que el aislado bacteriano G3 se muestra como un microorganismo con buen potencial para utilizarse en procesos de biorremediaci

Radon gas inside historical buildings in the city of Cordoba; Gas {sup 222}Rn en construcciones historicas de la ciudad de Cordoba

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Perez, R; Germanier, A; Rubio, M [CEPROCOR, Cordoba (Argentina); Sbarato, D; Zappino, R [Observatorio Ambiental de la Municipalidad de Cordoba, Cordoba (Argentina)

1998-07-01

Full text: In this work measurements of the Radon ({sup 222}Rn) concentration in the inside of historical buildings which date back to the end of the 17th and the beginning of the 18th Centuries have been carried out in the city of Cordoba (Argentina). Meteorological factors such as room temperature and atmospheric pressure have not shown to affect, to a great extent, the results obtained. By comparing the concentration of {sup 222}Rn in environments at different levels we inferred that the soil underlying the buildings does not represent an important source of {sup 222}Rn. The main occurrence of the element was found in room walls, which shows that local building materials are an important source of {sup 222}Rn. Among the materials used in these buildings are granitic rocks, and to a lesser extent, lime, sand and marble. The {sup 222}Rn concentrations recorded in some of the rooms surveyed reach values which are close to the minimum intervene level set by international standards in 4pCi/l. The study of the effects of ventilation in the concentration of {sup 222}Rn allows us to conclude that its values decrease to accepted levels by means of a natural and efficient ventilation of the rooms. (author) [Spanish] Texto completo: En este trabajo se han realizado mediciones de la concentracion de radon (radon 222) en el interior de edificios de la ciudad de Cordoba que datan de finales del siglo XVII y comienzos del siglo XVIII. Las concentraciones de radon 222 se determinaron con un detector pasivo Radon Monitor 05-418, marca Victoreen. El mismo consta de una camara de difusion electrostatica y un detector de estado solido (Si) de juntura difundida. No se observo, en los resultados obtenidos, influencias causadas por factores meteorologicos como la temperatura ambiente y la presion atmosferica. Por comparacion de la concentracion de radon 222 en ambientes ubicados en distintas plantas se dedujo que el suelo subyacente bajo los edificios representa una fuente secundaria

O uso do picolinato de cromo como coadjuvante no tratamento da diabetes mellitus - doi: 10.5102/ucs.v3i2.558

OpenAIRE

Marangon, Antônio Felipe Corrêa; Fernandes, Luis Gabriel de Melo

2008-01-01

O cromo é elemento essencial requerido para o metabolismo normal de carboidratos e lipídeos. A deficiência de cromo em humanos e outros mamíferos tem resultado em sintomas comparado àqueles associados ao início de diabetes, como elevação da glicose sangüínea, insulina, colesterol e triglicerídeos, e diminuição das lipoproteínas de alta densidade (HDL). A resposta ao cromo está relacionada ao grau de intolerância à glicose. Tem sido demonstrado que o cromo é efetivo no tratamento dos vár...

Isotopic study of the ''Laguna Mar Chiquita'', Cordoba, Argentina and its hydrogeological and paleoclimatological implications

International Nuclear Information System (INIS)

Dapena, C.; Panarello, H.O.

2001-01-01

This work presents the results obtained during the first stage of the investigations carried out in the Mar Chiquita lake (Cordoba Province, Argentine Republic) within the framework of the Coordinated Research Programme (CRP) on ''Isotope Techniques in Lake Dynamics Investigations'' of the International Atomic Energy Agency. The main objectives are to contribute to the study of this huge water body that in the past two decades increased its size almost three folds, to establish its water balance and to asses the influence of the climatic changes on the water budget. This water body is the final receptacle of a large closed basin formed mainly by the rivers Dulce, Suquia and Xanaes. During 1890-1973 it occupied 1800 to 2000 km 2 with a salinity of 310-250 g/L. At present, it has around 5000 km 2 , a maximum depth of 10-12 m and a salinity rounding 42 g/L. The changes in salinity and size are related to an increase in precipitation which, at the same time, depends on different palaeoclimatic conditions. From a scientific point of view it is also important to study the lake hydrological balance, its groundwater input and output as well as the evaporation rate and the mean residence time. These latter considerations are the object of the present isotopic research. Future studies will consider a paleoclimatic approach. (author)

Comparação das reservas glicogênicas em ratos jovens e envelhecidos tratados com picolinato de cromo

OpenAIRE

Rodrigues, Marcella Damas; Borin, Sérgio Henrique; Paulino, Patrícia Carla; Arruda, Eder João; Silva, Carlos Alberto da

2014-01-01

INTRODUÇÃO: Entre os suplementos utilizados no meio esportivo, o mineral cromo tem se destacado, principalmente por potencializar a ação da via insulínica, ação extremamente importante na manutenção da homeostasia metabólica. A ação do cromo parece ter ação importante como coadjuvante nas dinâmicas da ação insulínica.OBJETIVO: Avaliar o perfil glicogênico, bem como a sensibilidade tecidual à insulina e a pancreática à glicose em ratos jovens e envelhecidos tratados com picolinato de cromo.MÉT...

Evaluación de cromo en ambientes de trabajo en una industria de curtiembres y una de galvanoplastia

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Sonia Agudelo C.

2010-07-01

Full Text Available Fueron determinados los contenidos de cromo hexavalente y cromo total soluble en muestras de aire, para una industria de curtiembres y una de galvanoplastia, ubicadas en Santafé de Bogotá, con el fin de evaluar el riesgo por exposición ocupacional a estas especies. Las muestras fueron recolectadas por medio de bombas de succión, colocadas en la zona de respiración de los trabajadores, utilizando como elemento de captación filtros de membrana de cloruro de polivinilo PVC. Fue utilizado como sistema de muestreo el método de período parcial con muestras consecutivas. La especie Cr(VI fue determinada por colorimetría y cromo total soluble por espectrofotometría de absorción atómica con llama, previa optimización de los métodos. Para la industria de curtiembres los contenidos de Cr(VI oscilan entre no detectables y 9.4pg/m^ de aire y cromo total soluble entre no detectable y 74.0pg/m\\ Para la industria de galvanoplastia fueron encontrados contenidos de Cr(VI entre no detectable y 140pg/m' y cromo total soluble entre no detectable y 500pg/m'. Para las dos industrias estudiadas se superan los niveles permitidos durante varios muéstreos.

Personal Docente del Nivel Primario. Series Estadisticas Basicas, Nivel Educativo: Cordoba (Teaching Personnel in Primary Schools. Basic Statistics Series , Level of Education: Cordoba).

Science.gov (United States)

Ministerio de Educacion Nacional, Bogota (Colombia). Instituto Colombiano de Pedagogia.

This document provides statistical data on the distribution and education of teaching personnel working the elementary schools of Cordoba, Colombia, between 1958 and 1967. The statistics cover the number of men and women, public and private schools, urban and rural location, and the amount of education of the teachers. For overall statistics in…

O uso do picolinato de cromo como coadjuvante no tratamento da diabetes mellitus - doi: 10.5102/ucs.v3i2.558

Directory of Open Access Journals (Sweden)

Antônio Felipe Corrêa Marangon

2008-04-01

Full Text Available O cromo é elemento essencial requerido para o metabolismo normal de carboidratos e lipídeos. A deficiência de cromo em humanos e outros mamíferos tem resultado em sintomas comparado àqueles associados ao início de diabetes, como elevação da glicose sangüínea, insulina, colesterol e triglicerídeos, e diminuição das lipoproteínas de alta densidade (HDL. A resposta ao cromo está relacionada ao grau de intolerância à glicose. Tem sido demonstrado que o cromo é efetivo no tratamento dos vários tipos de diabetes e é considerado um dos nutrientes menos tóxicos.

DISEÑO DE UN BIOFILTRO PARA REDUCIR EL ÍNDICE DE CONTAMINACIÓN POR CROMO GENERADO EN LAS INDUSTRIAS DEL CURTIDO DE CUEROS

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OSCAR FABIÁN HIGUERA COBOS

2009-01-01

Full Text Available El sector industrial de las curtiembres genera descargas con volúmenes altos de concentrados de cromo. El cromo es usado en esta industria como agente de curtido. La dificultad que presenta el uso de sales de cromo en el curtido de pieles, se debe a la gran cantidad de curtiente que no se fija y finalmente se descarga al ambiente, en las aguas residuales causando efectos negativos en el ambiente y a la salud humana. El objeto de este trabajo es proveer una alternativa para la remoción de cromo de aguas residuales de curtiembre utilizando la biomasa de hoja de café variedad castillo, coffea arabica.

[ELDERLY ADULTS IN NURSING HOMES IN THE PROVINCE OF CORDOBA: OBJECTS OF CARE OR LEGAL SUBJECTS?].

Science.gov (United States)

Butinof, Mariana; Guri, Ana Karina; Rodríguez, Guadalupe; Abraham, María Daniela; Vera, Yanina; Gassmann, Jesica

2015-01-01

Argentina is among the Ibero-American countries with the greatest old age population, and is going through a process of advanced demographic transition. Elderly adults have long been considered a vulnerable group in need of care. The purpose of this work was to problematize the conceptions underlying the care given to the elderly in nursing homes, and the possible slides this involves from a human rights stance. An approach to this problem was built up by resorting to secondary documentary sources and interviews with key informants located in institutions for the elderly in the Province of Cordoba. This approach revealed a predominantly asylum-oriented conception centered on caring for others as objects, and a noticeable lack of consideration for the elderly as legal subjects, visible in numerous serious infringements of human rights, mostly silenced and rendered invisible. It seems that to overcome these situations it will be necessary not merely to review legal loopholes and current programs but also to reconsider the place given to the elderly in society. Regardless of their age and other social differences, the elderly require the same opportunities to claim full respect and exercise their human rights and fundamental freedoms.

Efecto in vitro del cromo (VI) sobre un biomarcador tumoral p53 y daño al ADN en hepatocitos murinos

OpenAIRE

Delgado Sarmiento, Pavel; Vera Gonzales, Corina; Arenas Chávez, Carlos

2013-01-01

El cromo es un metal pesado de uso múltiple en las diferentes especialidades que abarca la ciencia y tecnología en el mundo. Sin embargo, el cromo (VI) provoca daños en el ser humano por ingestión en dosis concentradas; produciendo anomalías en diferentes tipos de células; lo cual ha sido reportado por el Organismo Panamericano de Salud y Organismo Mundial de la Salud. En el presente trabajo se plantea el estudio de los efectos del cromo (VI) in vitro en hepatocitos murinos, los cuales fueron...

Nutritional profile and obesity: results from a random-sample population-based study in Córdoba, Argentina.

Science.gov (United States)

Aballay, Laura R; Osella, Alberto R; De La Quintana, Ana G; Diaz, María Del Pilar

2016-03-01

Obesity is a chronic, heterogeneous, multifactorial disease, which has sharply increased in prevalence in both developed and developing countries. This study aimed to estimate the prevalence of obesity and to identify socio-demographic risk factors associated with it, with special emphasis on diet. Nutritional status, demographic characteristics, lifestyle habits, and food consumption patterns derived from a Food Frequency Questionnaire were investigated. Exhaustive exploratory analyses were performed in order to describe dietary patterns, and logistic regression models were used for odds ratio estimation. The study included 4328 subjects, over 18 years old and resident in Cordoba city. The prevalence of overweight and obesity was 34 and 17 %, respectively, with 60 % in men and 45 % in women of BMI ≥ 25. Obesity risk factors were high intake of sodium, refined grains, starchy vegetables, and snacks. A lower risk of overweight and obesity was associated with an adequate, moderate intake of meats, eggs, alcoholic beverages, sugar and sweets, milk, yogurt, and pulses. A high intake of snacks, refined grains, starchy vegetables and sodium and low intake of yogurt, milk, pulses, and whole grains seem to be associated with the emergence and high prevalence of obesity in Cordoba, Argentina.

Variación morfométrica intra e interespecífica entre poblaciones de Odontophrynus (Anura: Cycloramphidae del área central de Argentina Intraand inter-specific morphometric variation between Odontophrynus populations (Anura: Cycloramphidae of central Argentina

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Pablo Raúl Grenat

2012-12-01

Full Text Available El análisis morfométrico ha servido como apoyo para explicar fenómenos ecológicos y evolutivos y para la clasificación de nuevas especies. Nosotros realizamos el análisis morfométrico de dos especies morfológicamente crípticas con el objeto de evaluar el grado de diferenciación intra e interespecífica. Se midieron 15 variables sobre 211 individuos pertenecientes a 18 localidades del centro de Argentina. Se encontró dimorfismo sexual en seis variables morfométricas en Odontophrynus cordobae y en tres variables en O. americanus. Se encontraron diferencias significativas entre especies en seis variables. El análisis discriminante incluyendo los individuos de todas las poblaciones relevadas para O. cordobae y O. americanus, mostró una clasificación positiva de los individuos dentro de su respectiva especie del 76.37%. En el análisis discriminante realizado con base en cuatro grupos (O. cordobae alopátrico y sintópico y O. americanus alopátrico y sintópico se obtuvo una reclasificación de los individuos dentro de cada grupo del 73.45%. Las diferencias morfométricas entre especies fueron mayores en sintopía. Los resultados se alejan de los resultados esperados bajo la hipótesis del desplazamiento de caracteres y podrían sugerir que los caracteres morfológicos externos no tendrían una influencia importante en el reconocimiento y elección de machos coespecíficos por parte de las hembrasMorphometric analyses are particularly important, and for many years they have supported evolutionary and ecological phenomena, and have been useful for the classification of new species, mainly to the lowest taxonomic levels. In order to assess the degree of sexual dimorphism, the intra-specific morphometric variation and the inter-specific morphological differences, we performed morphometric analyses of two morphologically cryptic species, Odontophrynus cordobae (diploid and O. americanus (tetraploid. For this, we measured 15 morphometric

Argentina chiama Italia: Friuli risponde

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Silvana Serafin

2010-03-01

Full Text Available The study analyzes the migratory waves from Friuli which, from the 1870s up to the post-World War II years, extensively moved towards Argentina, settling in the areas around the cities of Santa Fe, Cordoba, Entre Ríos, Chaco and Buenos Aires, but reaching also regions as far away as Patagonia. The accurate and well diffused net of the Fogolār Furlan, besides its function as friendly society, also provides to the promulgation of ancient traditions and mores among the new generations, transmitting on to them the cultural, linguistic and ethnic memory of the motherland. Epistles, tales, novels and poems form a paideia which is thus constantly being enlivened, eveng among those who assumed Argentinian nationality or were born in the country. Of utmost interest is, therefore, the resulting literary corpus, representing as it does a renewed search for identity in the form of a dialogue with the world, extending itself well beyond the contingency of boundaries and transmitting the universal essence of logos.

The aerial view of Cordoba drawn by Alfred Guesdon in 1853

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Antonio Gámiz Gordo

2018-02-01

Full Text Available The aerial views by Alfred Guesdon are considered works of special interest due to their quality and beauty. These drawings are a faithful portrait of the great cities of the period, and a mystery in terms of their creation. After reviewing some of the aerial drawings of the mid-19th century, the author considers undocumented hypotheses regarding the relationship of Charles Clifford to the drawings by Guesdon of Spanish cities, and the issues related to their elaboration by means of plans, photographs and hot-air balloons. Some light is shed on this matter thanks to the unpublished drawing of the city of Cordoba (1853, whose accuracy is evident when compared to a city plan drawn by Montis (1851. A journey through the city of Cordoba and its landmarks proves the documentary value of the drawing by Guesdon, who knew how to combine traditional drawing skills with the latest technical advances of his time.

International Astronomical Union Sympoisum No.50

CERN Document Server

Westerlund, B

1973-01-01

Dr J. Landi Dessy, Director of the Astronomical Observatory, Cordoba, Argentina, invited the International Astronomical Union to hold a Symposium in Cordoba in connection with the celebration of the Centennial of the Cordoba Observatory; the date of foundation is October 24, 1871. He proposed that the Symposium should deal with Spectral Classification and Multicolour Photometry as seven years had elapsed since the Symposium No. 24 in Saltsj6baden, and much development had occurred in the field. The invitation and the proposal were accepted by the IAU, and the Symposium was held in Villa Carlos Paz, near Cordoba, between October 18 and October 24, 1971. It was attended by about 50 scientists representing Argentina, Canada, Chile, Den­ mark, France, Germany, Italy, Mexico, Sweden, Switzerland, U.K., U.S.A., Vatican City State and Venezuela. The Symposium was divided into four sessions: 1. Classification of slit spectra, 2. Classification of objective-prism spectra, 3. Photometric classification, 4. Catalogues ...

Caracterización y recuperación de sales de cromo hexavalente de un pasivo ambiental

OpenAIRE

Rangel Cordova, Agustín Alexander; Isarain Chávez, Eloy; Maldonado Vega, María

2015-01-01

La presente investigación exploró diferentes soluciones de lavado con la finalidad de llevar a cabo la recuperación de cromo hexavalente a partir de un residuo industrial regulado por la NOM-147-SEMARNAT/SSA1-2004. El tratamiento consistió en un muestreo aleatorio simple así como su caracterización fisicoquímica, teniendo como base la alta solubilidad de la especie hexavalente de cromo. Posterior a ello se realizaron una serie de lavados utilizando cinco diferentes disoluciones (agua, ácido s...

Efecto de la asociación alga-bacteria Bostrychia calliptera (Rhodomelaceae en el porcentaje de remoción de cromo en laboratorio

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Ana Lucía Rengifo-Gallego

2012-09-01

Full Text Available Para determinar el porcentaje de remoción de cromo en la asociación alga-bacteria, se tomaron ejemplares del alga Bostrychia calliptera de pneumatóforos de Avicennia germinans y Rizophora mangle, en la desembocadura del Río Dagua, Pacífico colombiano. El ensayo se realizó in vitro en agua marina sintética a dos concentraciones de cromo 5 y 10mg/L, empleando biorreactores con cuatro tratamientos; i material Alga-Bacteria (AB, ii material algal con antibiótico Alga-antibiótico (AA, iii consorcio bacteriano natural (CBN y iv control sin presencia de B. calliptera ni bacteria. Se monitoreó el comportamiento de poblaciones bacterianas y el porcentaje de disminución de cromo mediante AAS (Espectroscopía de absorción atómica. Se obtuvo diferencias significativas entre los tratamientos Alga-bacteria (AB y el consorcio bacteriano natural (CBN, siendo Alga-bacteria más eficiente a 10mg/L (87%. El consorcio bacteriano natural CBN obtuvo mayor porcentaje de remoción a bajas concentraciones de cromo a 5ppm (62.85%. Los resultados mostraron una interacción positiva entre las bacterias asociadas (CBN a la superficie del alga roja B. calliptera en su proceso acumulativo de cromo.

DISEÑO DE UN BIOFILTRO PARA REDUCIR EL ÍNDICE DE CONTAMINACIÓN POR CROMO GENERADO EN LAS INDUSTRIAS DEL CURTIDO DE CUEROS

OpenAIRE

OSCAR FABIÁN HIGUERA COBOS; JUAN FELIPE ARROYAVE LONDOÑO; LUIS CARLOS FLOREZ GARCIA

2009-01-01

El sector industrial de las curtiembres genera descargas con volúmenes altos de concentrados de cromo. El cromo es usado en esta industria como agente de curtido. La dificultad que presenta el uso de sales de cromo en el curtido de pieles, se debe a la gran cantidad de curtiente que no se fija y finalmente se descarga al ambiente, en las aguas residuales causando efectos negativos en el ambiente y a la salud humana. El objeto de este trabajo es proveer una alternativa para la remoción de crom...

Molecular phylogeography of the Chagas' disease vector Triatoma infestans in Argentina

Science.gov (United States)

Pérez de Rosas, A R; Segura, E L; García, B A

2011-01-01

Triatoma infestans is the main vector of Chagas' disease in South America between latitudes 10°S and 46°S. A multilocus microsatellite data set of 836 individuals from 27 populations of T. infestans, from all its range of distribution in Argentina, was analyzed. Our results favor the hypothesis of two independent migration events of colonization in Argentina and secondary contacts. The majority of the populations of the western provinces of Catamarca, La Rioja, San Juan and the west of Cordoba province, had almost no shared ancestry with the rest of the populations analyzed. Probably those populations, belonging to localities close to the Andean region, could have been established by the dispersal line of T. infestans that would have arrived to Argentina through the Andes, whereas most of the rest of the populations analyzed may have derived from the dispersal line of T. infestans in non-Andean lowlands. Among them, those from the provinces of Formosa, Chaco, Santiago del Estero and Santa Fe shared different percentages of ancestry and presented lower degree of genetic differentiation. The migratory movement linked to regional economies and possibly associated with passive dispersal, would allow a higher genetic exchange among these populations of T. infestans. This study, using microsatellite markers, provides a new approach for evaluating the validity of the different hypotheses concerning the evolutionary history of this species. Two major lineages of T. infestans, an Andean and non-Andean, are suggested. PMID:21224874

Molecular phylogeography of the Chagas' disease vector Triatoma infestans in Argentina.

Science.gov (United States)

Pérez de Rosas, A R; Segura, E L; García, B A

2011-07-01

Triatoma infestans is the main vector of Chagas' disease in South America between latitudes 10°S and 46°S. A multilocus microsatellite data set of 836 individuals from 27 populations of T. infestans, from all its range of distribution in Argentina, was analyzed. Our results favor the hypothesis of two independent migration events of colonization in Argentina and secondary contacts. The majority of the populations of the western provinces of Catamarca, La Rioja, San Juan and the west of Cordoba province, had almost no shared ancestry with the rest of the populations analyzed. Probably those populations, belonging to localities close to the Andean region, could have been established by the dispersal line of T. infestans that would have arrived to Argentina through the Andes, whereas most of the rest of the populations analyzed may have derived from the dispersal line of T. infestans in non-Andean lowlands. Among them, those from the provinces of Formosa, Chaco, Santiago del Estero and Santa Fe shared different percentages of ancestry and presented lower degree of genetic differentiation. The migratory movement linked to regional economies and possibly associated with passive dispersal, would allow a higher genetic exchange among these populations of T. infestans. This study, using microsatellite markers, provides a new approach for evaluating the validity of the different hypotheses concerning the evolutionary history of this species. Two major lineages of T. infestans, an Andean and non-Andean, are suggested.

Expected genetic gain in teak (Tectona grandis L.f.) in Cordoba (Colombia)

International Nuclear Information System (INIS)

Espitia C, Miguel; Olman Murillo, G; Carlos Castillo, P

2011-01-01

The Cordoba department of Colombia programmed to establish 200000 ha of forest plantations by year 2025. Teak was priorized by its adaptation, wood quality and value in the asian markets. The objective of this research was to estimate the expected genetic gain, of phenotypically selected pluss trees in 5316 ha plantation in Cordoba, for diameter at breast height, commercial height, commercial volume and log quality traits. The selection based on the pheno typical evaluation of the tree candidate and its four best neighbors within a 20 m radius, qualifying, individually the first four segments of 2.5 m length. Selected trees were classified in list A as determined to be superior in both, volume and quality, according to the selection differential to all its four best neighbors. List B included those plus trees found superior only in commercial volume or in stem quality. Genetic gain was estimated by multiplying selection differential X average narrow sense heritability. We estimated a Selection Index that integrate commercial volume (60%) and stem quality (40%). From 46 selected trees, 18 were classified as plus A. In selecting and cloning the 18 best A plus trees, based on the Selection Index, we expected genetic gains of 5.52% (diameter); 17.50% (height); 41.71% (commercial volume) and 9,59% (stem quality). These results suggest an important genetic progress breeding teak in Cordoba, as long as they broaden the genetic base of the program and verify results with genetic testing in various potential production areas.

Geochemical interpretation of gamma-ray spectrometry images from the Achala granite (Cordoba, Argentina)

International Nuclear Information System (INIS)

Lopez, Luis E.

1998-01-01

Data of an old spectrometry gamma-ray survey carried out in the Sierras Pampeanas Range by the National Atomic Energy Commission (Argentina) were reprocessed to obtain a corrected digital archive. The geochemical interpretation of the 250 x 250 meters spectrometric grids from the Achala batholith area was based on the behaviour of the radioelements in a peraluminous magma. Spectrometric maps of potassium, uranium, thorium and their ratios were used. In particular, the Th grid was very useful to define the primary magmatic evolution of the granitoids. K and U correlate roughly with Th distribution. The observed positive correlation between Th and U is thought to be the result of surficial leaching of U from uraninite. Finally, U/Th ratio allows to determine both, the magmatic evolution of the rocks and the mineral phase responsible for U content. (author)

con dietas suplementadas con Cromo-L-metionina

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Ram\\u00F3n Garc\\u00EDa-Castillo

2006-01-01

Full Text Available Un total de 48 cerdos (Sus scrofa domesticus; 24 machos castrados y 24 hembras cruzados (Yorkshire, Hampshire, Duroc y Landrace de 3,5 a 4,0 meses de edad y 60,0 ± 5,0 kg PV en finalización. Se alimentaron con dietas isoproteícas (14,5 % PC e isoenergéticas (3.400 kcal EM/kg de MS, adicionadas con Cr-L-metionina (MiCroPlex® (0, 200, 400 y 600 ppb. El experimento tuvo una duración de 45 días y se realizó de agosto a noviembre del 2002 en las instalaciones de la Universidad Autónoma Agraria Antonio Narro, localizada en Saltillo, Coahuila, México. Al tener los animales aproximadamente 95 kg PV, se tomó muestra de 15 ml de sangre por cada animal para determinar la concentración de glucosa, ácido úrico, creatinina, urea, proteinas totales y colesterol. Se aplicó un diseño completamente al azar con arreglo factorial 2 x 4; dos para el factor sexo y cuatro para nivel de cromo. Los metabolitos en suero no fueron afectados (P>0,05 por el factor sexo. La glucosa en suero disminuyó (P<0,05 y el colesterol incrementó (P<0,05 con cromo en la dieta. Se concluye que el Cr incrementa el metabolismo de glucosa y disminuye el de colesterol, con lo cual puede haber energía disponible para síntesis de proteína la cual es necesaria para el crecimiento de los animales

Reducción de cromo hexavalente en cementos usando sulfato ferroso mono y heptahidratado: eficacia y almacenabilidad

OpenAIRE

Valverde, J. L.; Lobato, J.; Fernández, I.; Marijuán, L.; Pérez-Mohedano, S.; Talero, R.

2005-01-01

[ES] Las sustancias que contienen cromo hexavalente están clasificadas en la legislación comunitaria como sustancias carcinogénicas, mutagénicas y sensibilizantes. El cromo hexavalente del cemento potencia la sensibilización y provoca graves reacciones alérgicas que sufren bastante a menudo los trabajadores que lo manipulan habitualmente, ya sea en fábrica o en el sector de la construcción. La dermatitis alérgica o de contacto que produce es muy dolorosa y puede dejar a los trabajadores en es...

Intraspecific variation in erythrocyte sizes among populations of Hypsiboas cordobas (Anura: Hylidae

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Mariana Baraquet

2013-12-01

Full Text Available We studied the morphology and size of erythrocytes of H. cordobae, and analysed the geographic variation of this character along the distribution of the species, in relation to the latitudinal and altitudinal distances. Erythrocyte shape of the H. cordobae is ellipsoidal and the nuclei are also ellipsoidal and centrally oriented. Erythrocyte and nuclear size showed significant differences among populations, with the highest mean size corresponding to the population of Achiras (low altitude site and the lowest mean size to Los Linderos (high altitude site. There was no significant relationship between the latitude of each population and the both erythrocyte and nuclear size. The altitudinal variation in erythrocyte cell size may be attributable to the surface available for gas exchange; a small erythrocyte offers a possibility of greater rate of exchange than a larger one. Our results are consistent with studies of other amphibians, where intraspecific comparisons of populations at different altitudes show that individuals at higher altitudes are characterized by smaller erythrocytes.

Bacillus sp. G3 un microorganismo promisorio en la biorremediación de aguas industriales contaminadas con cromo hexavalente

OpenAIRE

Alexander Mora Collazos

2016-01-01

Introducción: El presente trabajo tuvo como objetivo identificar y caracterizar microorganismos provenientes de un agua residual industrial potencialmente útiles en biorremediación de aguas contaminadas con cromo hexavalente. Metodología: Se realizó el aislamiento de tres microorganismos partiendo de un agua residual industrial proveniente de una empresa de galvanoplastia. Se evaluó el potencial de los microorganismos aislados en su capacidad para reducir cromo hexavalente; escogiéndose al ai...

Estudio de la biosorción de cromo con hoja de café

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Luis Carlos Florez García

2009-05-01

Full Text Available El objeto de este trabajo es proveer una alternativa para la remoción de metales pesados como el cromo de las aguas residua- les (efluentes de la industria del cuero y de electrorrecubrimientos de piezas metálicas (galvanoplastia, utilizando como bioma- sa hojas de café. A condiciones de operación de pH de la disolución de 4, grado de agitación 0 rpm, tamaño de partícula de la biomasa de 0,149 mm de diámetro y relación masa de biomasa / volumen de disolución de 0,85 gr/ml, se obtuvieron eficien- cias en la remoción de cromo, con la hoja de café variedad castillo, coffee arabica del 82% para disoluciones sintéticas de1.000 mg/L.

Recuperación del cromo y aluminio del licor de desecho (wl en forma de sales dobles

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Pedro R. Bassas-Noa

2006-03-01

Full Text Available El licor WL es un residual de la industria del níquel agresivo al medio ambiente por su acidez que contiene elementos metálicos de gran valor. Se propone un tratamiento para la separación con  hidróxido de amonio y la recuperación de la mayor cantidad de cromo y aluminio contenidos en el mismo. Se logra precipitar una mezcla de hidróxidos de aluminio que tratada con ácido sulfúrico permite obtener, por cristalización, la sal sulfato de aluminio y amonio dodecahidratada. Posteriomente se cristaliza la sal sulfato doble de cromo y amonio dodecahidratado. Se demuestra que el sulfato doble de cromo y amonio dodecahidratado y el sólido separado presentan características químicas que hacen posible su aplicación en la industria textil y de cerámica, entre otras. El esquema aplicado permite la recuperación de valores metálicos y la disminución del alto poder contaminante del licor de desecho WL.

Diseño de un biofiltro para reducir el índice de contaminación por cromo generado en las industrias del curtido de cueros

OpenAIRE

HIGUERA COBOS, OSCAR FABIÁN; ARROYAVE LONDOÑO, JUAN FELIPE; FLOREZ GARCIA, LUIS CARLOS

2010-01-01

El sector industrial de las curtiembres genera descargas con volúmenes altos de concentrados de cromo. El cromo es usado en esta industria como agente de curtido. La dificultad que presenta el uso de sales de cromo en el curtido de pieles, se debe a la gran cantidad de curtiente que no se fija y finalmente se descarga al ambiente, en las aguas residuales causando efectos negativos en el ambiente y a la salud humana. El objeto de este trabajo es proveer una alternativa para la remoción de crom...

REMOCION DE CROMO Y MATERIA ORGANICA DISUELTA EN EFLUENTES INDUSTRIALES POR ADSORCIÓN E INTERCAMBIO IONICO EN ZEOLITA Y CARBON ACTIVADO.

OpenAIRE

COVARRUBIAS GALLARDO, CRISTIAN MAURICIO; COVARRUBIAS GALLARDO, CRISTIAN MAURICIO

2005-01-01

Se estudió la remoción de cromo y materia orgánica desde solución acuosa utilizando métodos de separación basados en el uso de zeolitas y carbón activado. Para este propósito se evaluó la operación de remoción de cromo en columnas empacadas de zeolita y c 175p.

Provincial nuclear regulatory authority?: The case of the province of Cordoba

International Nuclear Information System (INIS)

Martin, Hugo; Ocana, F.; Scoles, R.

1999-01-01

The evolution of social and political events in the province of Cordoba after the Law 8157 of 1992, that establishes the provincial nuclear policy, are analysed as well as the recent sanction and veto of the Law 8775, which creates the provincial Nuclear Regulatory Authority. The authors conclude that is necessary and convenient to enforce provincial nuclear regulations and controls

Fosfato de cromo (III marcado con diferentes radionúclidos para uso en radiosinoviortesis

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Jorge Cruz Arencibia

2012-06-01

Full Text Available Introducción: la radiosinoviortesis se utiliza en el tratamiento de la sinovitis crónica, complicación frecuente en enfermedades sistémicas como artritis reumatoide y hemofilia. En la práctica clínica internacional se emplean diferentes coloides y suspensiones radiactivas, pero su número es reducido y su disponibilidad limitada. Objetivo: obtención y caracterización físico-química de suspensiones de fosfato de cromo (III marcadas con radionúclidos como potenciales radiofármacos para uso en radiosinoviortesis. Métodos: las suspensiones se obtuvieron por síntesis química, los radionúclidos se añadieron al inicio de la reacción o después de finalizada esta. El tamaño de partículas se estimó mediante microscopia óptica y filtración por membranas. Asimismo se evaluó por espectrofotometría la estabilidad de la suspensión al ser resuspendida en distintos medios. La pureza radioquímica se determinó por cromatografía de papel. Resultados: se obtuvo y caracterizó una suspensión de fosfato de cromo (III. El producto obtenido presentó un tamaño de partículas predominante entre 0,8-5 µm y que al ser suspendidas en solución de gelatina al 2 % en tampón acetato 1 mg/mL no sedimentó en menos de 3 h. Se estableció la tecnología para la obtención de formulaciones de fosfato de cromo (III marcado con 32P e 90Y y se demostró la factibilidad de marcar la suspensión obtenida con otros radionúclidos trivalentes como 177Lu y 68Ga. Conclusiones: los resultados permiten considerar al fosfato de cromo (III una suspensión base para la obtención de radiofármacos para uso en radiosinoviortesis en diferentes articulaciones, en función de las características físico-nucleares de los radionúclidos que se empleen.

Are Young People Subjects of Rights or…without rights? Changes in the Contravention System (Cordoba, Argentina

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Mariana Jesica Lerchundi

2017-01-01

Full Text Available This text wants to compare the main differences between the Faults Code and Coexistence Code of the Province of Córdoba (Argentina taking young people as empirical subjects of reflection, which are the most affected by the regulations. From the content analysis and critical discourse analysis, the differences between the two standards were found. Here are detailed only some of them that allow us to infer changes in the penal system maintaining the violation of rights of young people.

[Vitamin D deficiency and osteoporosis in a rural population of Cordoba province, Argentina].

Science.gov (United States)

Gobbi, C; Salica, D; Pepe, G; Dotto, G; Petenian, E; Martínez, F

2009-01-01

Vitamin D deficiency is defined when blood levels of 25-hydroxyvitamin D (25 (OH) D) is less than ng / mmol/L. The status of Vitamin D level is associated with clinical, pathological and physiological changes as increased of parathyroid hormone, bone remodeling, osteoporosis and increased risk of fractures. Moreover,vitamin D and its metabolites are known to be associated with multiple chronic diseases as diabetes mellitus, autoimmune, cardiovascular and neoplasia diseases. To assess the vitamin D status in a rural population of Córdoba Province in Argentina and its relation with bone mineral density. We prospectively studied 31 patients over 50 years old who live in a rural population of Pampa de Achala in Córdoba Province, Argentina. This city is located in Córdoba High mountains. Blood vitamin D levels were tested in 24 patients and Bone mineral density in 31 patients. Vitamin D level was determined by HPLC. The vitamin D level were considered normal between 20-50 ng/ml in the winter season and 20-80 ng/ml in the summer season. Bone mineral density of lumbar spine and femoral neck was measured by DXA GE LUNAR DPX-L, according to World Health organization classification (37). The data were analyzed by Spearman coefficient and Chi cuadrado. The vitamin D levels samples were available in 24 patients. Mean blood Vitamin D level was 24.54 ng /ml. 8 of them (33%) had vitamin D level less than 20ng/ ml. 83% (20) of the analysed patients had vitamin D level less than 30 ng/ml and only 4 patients has vitamin D level more than 30 ng/ml. Low bone mineral density of lumbar spine and femoral neck was found in 66 % of the patients. 19 % of the patients were diagnosed of lumbar spine and femoral neck osteoporosis and 29 % of them had lumbar spine meanwhile 25 % had femoral neck. There was not statistically significant association between vitamin D level and bone mineral density analysed by Chi Cuadrado (p<0.07). A significant association was found between blood vitamin D

Atomic energy and science disclosure in Cordoba

International Nuclear Information System (INIS)

Martin, Hugo R.

2011-01-01

In September 2009, considering the existing interest in public communication of scientific activities that are developed locally, a group of researchers and communicators from Córdoba, decided to form the Network of Outreach of Córdoba. Its stated objectives of the Constitutive Act are presented in this paper along with the main activities undertaken to date and plans for the future. Since that time, the Management of Institutional Relations of the CNEA in Córdoba became involved in public circulation of scientific knowledge, in what has proven to be a framework that ensures an adequate level of debate to present nuclear national activities. This will involve collaborative efforts with professional institutions involved in research, teaching and communicating science. The main objective was to encourage the transfer of knowledge to optimize available resources, improving the methodological approaches and generating creative products tailored to regional needs, in order to promote the democratization of science and nuclear technology. This paper consists of two parts. On the one hand describes the activities of the Network during the year 2011 shows results with particular emphasis on topics related to atomic energy, and secondly, shows the desirability of promoting such activities in the CNEA. Among the main actions considered, highlighting the institutional participation in the official Ministry of Science and Technology Fair participation in Science and Technology Provincial Cordoba 2011, issue of the radio program 'Green Light: Science and technology everyday life' by National Technological University Radio and a network of forty provincial stations, and active participation in the Course of Specialization in Public Communication of Science and Scientific Journalism, organized by the School of Information Sciences and the Faculty of Mathematics, Physics and Astronomy, National University of Cordoba, among others. (author) [es

Opinions of Cordoba's politicians and journalists on atomic energy

International Nuclear Information System (INIS)

Bossa, Pedro; Fracassa, Laura; Martin, Hugo R.

2006-01-01

The perception of the nuclear energy of journalist of the Cordoba city and of the member of the legislative body of the Province was investigated. In general a high degree of ignorance on nuclear energy and its uses was found. The majority of them considers nuclear energy a great danger for the society and describes it as a potential damage for health and environment. Little is known about medical applications, food irradiation, etc. As a consequence nuclear energy has no priority in journalist and lawmakers agendas. (author)

Contaminación por cromo en Noreste de la Ciudad de México, un enfoque Interdisciplinario

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Margarita Eugenia Gutiérrez R.

1986-01-01

Full Text Available En el municipio de Tultitlán, Edo.de México, se acumularon residuos industriales con un alto contenido de cromo en formas químicas muy solubles, por lo que el elemento se está dispersando en el entorno. Principalmente se infiltra y contamina aguas subterráneas, pero en menor medida también está afectando la atmósfera y los suelos. En este artículo se describen los niveles de cromo en aguas profundas y suelos; los antecedentes y las causas que provocaron el problema, las características del medio, una primera estimación del área afectada; y, finalmente, se plantean posibles soluciones.

Comparação das reservas glicogênicas em ratos jovens e envelhecidos tratados com picolinato de cromo

OpenAIRE

Rodrigues,Marcella Damas; Borin,Sérgio Henrique; Paulino,Patrícia Carla; Arruda,Eder João; Silva,Carlos Alberto da

2014-01-01

INTRODUÇÃO: Entre os suplementos utilizados no meio esportivo, o mineral cromo tem se destacado, principalmente por potencializar a ação da via insulínica, ação extremamente importante na manutenção da homeostasia metabólica. A ação do cromo parece ter ação importante como coadjuvante nas dinâmicas da ação insulínica. OBJETIVO: Avaliar o perfil glicogênico, bem como a sensibilidade tecidual à insulina e a pancreática à glicose em ratos jovens e envelhecidos tratados com picolinato de cro...

PRAMU. Contamination sources

International Nuclear Information System (INIS)

Asenjo, Armando R.

2000-01-01

Mining and milling activities have been carried out in Argentina during the last 40 years, and nowadays National Atomic Energy Commission (CNEA) of Argentina is undertaking the Uranium Mining Environmental Restoration Project (PRAMU). The aim of this project is to achieve that in all the places where uranium mining activities were developed, to restore the environment as much as it is possible, according to the legislation in force. The sites which are 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). In order to develop the restoration project in each site, one of the first task to be performed is to know quantities and the chemical, physicals and radiological characteristics of the contamination sources. In the present paper the activities of PRAMU in this field, are informed. (author)

Silent circulation of St. Louis encephalitis virus prior to an encephalitis outbreak in Cordoba, Argentina (2005.

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Luis Adrian Díaz

2012-01-01

Full Text Available St. Louis encephalitis virus is a complex zoonoses. In 2005, 47 laboratory-confirmed and probable clinical cases of SLEV infection were reported in Córdoba, Argentina. Although the causes of 2005 outbreak remain unknown, they might be related not only to virological factors, but also to ecological and environmental conditions. We hypothesized that one of the factors for SLE reemergence in Córdoba, Argentina, was the introduction of a new SLEV genotype (SLEV genotype III, with no previous activity in the area. In order to evaluate this hypothesis we carried out a molecular characterization of SLEV detections from mosquitoes collected between 2001 and 2004 in Córdoba city. A total of 315 mosquito pools (11,002 individuals including 12 mosquitoes species were analyzed. Overall, 20 pools (8 mosquitoes species were positive for SLEV. During this study, genotypes II, V and VII were detected. No mosquito pool infected with genotype III was detected before the 2005 outbreak. Genotype V was found every year and in the 8 sampled sites. Genotypes II and VII showed limited temporal and spatial activities. We cannot dismiss the association of genotype II and V as etiological agents during the outbreak. However, the silent circulation of other SLEV strains in Córdoba city before the 2005 outbreak suggests that the introduction of genotype III was an important factor associated to this event. Not mutually exclusive, other factors such as changes in avian hosts and mosquitoes vectors communities, driven by climatic and environmental modifications, should also be taken into consideration in further studies.

Generación de viajes de emprendimientos residenciales: estudio de casos en la ciudad de Córdoba, Argentina

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Jorge Jose Galarraga

2017-03-01

Full Text Available It is estimated that approximately 80% of all trips made in a city have their origin or destination in the home. Therefore, knowledge of the generation of this type of travel is important to move towards a sustainable urban mobility. The paper considers two different environments with their models and rates of generation: low-density residential facilities, con-sisting of isolated houses and with little access to public transport, and apartments with high density, better access to public transport and more diverse use of the soil. Based on the study of 9 cases in the city of Cordoba, Argentina, it has been characterized the generation of travel by car and on foot, obtaining important differences between the two environments studied.

EFEITOS DO CROMO HEXAVALENTE SOBRE O CRESCIMENTO DE RAÍZES E CICLO CELULAR NO MERISTEMA DA PONTA DA RAIZ DE Allium cepa

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Mary Helen Pestana da Costa

2016-09-01

Full Text Available O Cromo hexavalente [Cr (VI] é classificado pela Agência Internacional de Pesquisa sobre Câncer (IARC como cancerígeno para os seres humanos. A principal fonte de contaminação ambiental pelo cromo em ecossistemas aquáticos está relacionada com a aplicação industrial deste metal. No presente estudo, foram avaliados os efeitos citotóxicos e genotóxicos do Cr (VI no ciclo celular de células do meristema da raiz de Allium cepa. O teste foi usado para avaliar efeitos do cromo na germinação de sementes, alongamento das raízes, índice mitótico e indução de micronúcleos e anomalias do ciclo mitótico. Sementes de A. cepa foram germinadas em cinco diferentes condições: (1 controle negativo, água destilada; (2 grupo T1, tratado com dicromato de potássio a 6 mg.L-1; (3 grupo T2, tratado com dicromato de potássio a 12 mg.L-1; (4 grupo T3, tratado com dicromato de potássio a 24 mg.L-1; (5 controle positivo, tratado com NMU (N-nitroso-N-metilureia a 0,125 mg.L-1. As análises estatísticas efetuadas foram ANOVA e coeficiente de correlação de Pearson. Mesmo sem afetar o índice de germinação de sementes e o alongamento das raízes, os resultados demonstraram efeitos citotóxicos sobre o índice mitótico, bem como efeitos genotóxicos do cromo hexavalente. Palavras-chave: Cromo, Allium cepa, ciclo celular, citotoxicidade, genotoxicidade.

Radiological environmental monitoring around the mining sites in Argentina

International Nuclear Information System (INIS)

Quintana, Eduardo E.; Gomez, Juan C.; Palacios, Miguel A.

2004-01-01

The uranium mining industry began its development in Argentina in the fifties. Since then, several installations have operated as uranium underground mining until late seventies, when that mines were closed. Since then, open pit exploitation has been used. Milling facilities were installed in the mining areas or close to them. The environmental radiological surveillance and the impact assessment presented in this work are referred to the uranium ore mining and milling plants Tonco, in Salta province; Pichinan, in Chubut province; San Rafael and Malargue, in Mendoza province; Los Gigantes, in Cordoba province; La Estela, in San Luis province and Los Colorados in La Rioja province. The environmental radiological surveillance programme results carried out from the beginning of the operations are presented and include uranium and radium concentrations in surface waters and sediments. The results obtained in waters upstream and downstream the uranium mining complexes are compared and no significant differences were observed. Moreover, taking into consideration the critical exposition pathways of the population living in the area, no significant levels of exposition were observed. (author)

Participación sociopolítica infantil y procesos de socialización política: exploración con niños y niñas de la ciudad de Córdoba, Argentina ( Sociopolitical Child Participation and Political Socialization Processes: exploring With Boys and Girls from the City of Cordoba, Argentina

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Débora Imhoff

2013-12-01

Full Text Available RESUMEN: Se presentan los resultados de un estudio exploratorio tendiente a conocer el grado de participación social y política que poseen niños y niñas de la ciudad de Córdoba, Argentina, en el cual se efectuaron 200 entrevistas semiestructuradas a niños y niñas de 9 a 11 años de edad, de nivel socioeconómico medio que residen en dicha ciudad. Los resultados indican niveles bajos de participación social y política, con una fuerte presencia de actividades sociales de corte religioso, por sobre otros tipos de participación. Asimismo, se realizó un análisis cualitativo acerca de las razones que los niños y niñas explicitan en relación con su ausencia de participación. A partir de los resultados se han observado en las prácticas y discursos infantiles la reproducción de enunciados que los desacreditan como sujetos de derechos con capacidad de acción política. Esta situación imposibilita la emergencia protagónica de los niños y niñas en el área de lo público. ABSTRACT: The results of an exploratory study are expressed to know the degree of social and political participation that have boys and girls from the city of Cordoba, Argentina, in which were conducted 200 semi-structured interviews, to boys and girls from 9 to 11 years old, of a middle socioeconomic level residing in the city. The results indicate low levels of social and political participation with a strong presence of social activities of religious cut, above other types of participation. A qualitative analysis about the reasons that children brought in relationship with its absence of participation is also conducted. Based on the results it has been observed in practices and children’s speech reproduction statements discrediting them as subjects of rights capable of political action. This situation makes it impossible for the protagonist emergence of the children in the public area.

Determinación del contenido de compuestos de cromo en el cemento portland por espectrofotometría de absorción atómica. Segunda parte

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Gaspar-Tebar, Demetrio

1976-12-01

Full Text Available Not availableEn un trabajo anterior (1 se ha puesto de manifiesto la importancia que tiene conocer el contenido de compuestos de cromo (III y de cromo (VI en el cemento portland, habiendo determinado dicho contenido en diversas 'muestras de distintos cementos, fabricados por la industria española, por espectrofotocolorimetría del complejo coloreado formado en la reacción que tiene lugar entre el cromo (VI y la s-difenilcarbacida, de tal modo que se puedan utilizar como patrones para estudiar y poner a punto un procedimiento rápido y preciso que utiliza la espectrofotometría de absorción atómica, objeto del presente artículo.

Contaminación aguda por vertidos textiles: Tratamiento de carpines dorados (Carassius auratus) con dicromato potásico; determinación de la toxicidad y niveles de cromo en branquias.

OpenAIRE

Riva Juan, María del Carmen; Flos Bassols, Rosa; Crespi Rosell, Martí; Balash, J.

1980-01-01

El cromo es el metal pesado cuantitativamente más importante en el vertido de la Industria Textil; procede esencialmente de los procesos de tintura con colorantes cromatables. Hemos sometido carpines dorados al tratamiento agudo con dicromato potásico disuelto en el agua de tanques experimentales. Se determina la toxicidad y los niveles de cromo en branquias. La concentración de cromo en el tejido branquia1 se halla mediante espectrofotometría de absorción atómica, previa digestión c...

Cariotipo del pejelagarto tropical Atractosteus tropicus (Lepisosteiformes: Lepisosteidae y variación cromosómica en sus larvas y adultos

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Lenin Arias-Rodríguez

2009-09-01

Full Text Available El cariotipo del pejelagarto Atractosteus tropicus se describe por medio de tinción Giemsa de 295 preparaciones cromosómicas en mitosis a partir de 120 larvas y 15 adultos (5 hembras y diez machos de la población que habita en Tabasco, sureste de México. El número diploide 2n=56 cromosomas se dio en 281 dispersiones cromosómicas de un total de 445 muestras, de ellas 73 dispersiones provinieron de 206 metafases larvales, y 208 dispersiones de 239 metafases de adultos. Se observó variación en el número de cromosomas desde 46 hasta 64 elementos cromosómicos (larvas. Las metafases con 58 cromosomas fueron el segundo valor más abundante, después del número diploide 2n=56 (35%. En los adultos esa variación no fue relevante. Esta variación cromosómica se relaciona con microcromosomas móviles. El cariotipo se determinó de seis dispersiones cromosómicas bien definidas de tres hembras y tres machos; y el cariotipo promedio se integró de ocho pares de cromosomas metacéntricos (m, cuatro pares de cromosomas submetacéntricos (sm, ocho pares de telocéntricos (t, y ocho pares de microcromosomas telocéntricos (*t El número fundamental observado en el cariotipo típico promedio fue NF = 80 brazos cromosómicos. No se detectaron diferencias sexuales.Karyotype of the tropical gar Atractosteus tropicus Lepisosteiformes: Lepisosteidae and chromosomal variation in their larval and adults. The karyotype of the tropical gar Atractosteus tropicus is described from conventional Giemsa-staining of 295 mitotic chromosome slides from 120 larvae and 15 adults (five females and ten males from Tabasco, southern of Mexico. The diploid number 2n = 56 chromosomes was calculated (73 spreads from 206 larval and 208 adult metaphases. Variation on chromosome number was from 46 (4.4% to 64 (3.9% chromosome elements on larval samples, whereas 58 (11.7 % chromosomes were the second most abundant after the diploid number of 2n = 56 (35%. Such variation was

Comparação das reservas glicogênicas em ratos jovens e envelhecidos tratados com picolinato de cromo

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Marcella Damas Rodrigues

2014-10-01

Full Text Available INTRODUÇÃO: Entre os suplementos utilizados no meio esportivo, o mineral cromo tem se destacado, principalmente por potencializar a ação da via insulínica, ação extremamente importante na manutenção da homeostasia metabólica. A ação do cromo parece ter ação importante como coadjuvante nas dinâmicas da ação insulínica. OBJETIVO: Avaliar o perfil glicogênico, bem como a sensibilidade tecidual à insulina e a pancreática à glicose em ratos jovens e envelhecidos tratados com picolinato de cromo. MÉTODO: Foram utilizados ratos Wistar, com idade de 3 e 24 meses, distribuídos em quatro grupos experimentais (n = 6, assim denominados: jovens (J, jovens suplementados com picolinato de cromo (JP, 80 µg/Kg, envelhecidos (E e envelhecidos suplementados com picolinato de cromo (EP, 80 µg/Kg. A sensibilidade à insulina foi avaliada através do teste de tolerância à insulina (ITT, 2 U/Kg e a sensibilidade pancreática, através do teste de tolerância à glicose (GTT, 2 g/Kg. Na análise estatística foi utilizado teste de normalidade de dados de Kolmogorov-Smirnov, seguido de ANOVA e o teste post-hoc de Tukey, p < 0,05. RESULTADOS: O grupo envelhecido apresentou menores reservas glicogênicas se comparado ao grupo jovem; por sua vez, o tratamento com picolinato promoveu elevação das reservas hepáticas de ratos jovens sem efeito nos envelhecidos. No mesmo perfil de análise, foi demonstrado que o tratamento com picolinato promoveu elevação das reservas glicogênicas musculares, efeito observado tanto nos jovens quanto nos envelhecidos. No grupo jovem, não foi observada diferença no ITT, porém houve redução da área sob a curva descrita no GTT. No grupo envelhecido, houve elevação da responsividade à insulina no ITT e redução da área sob a curva. CONCLUSÃO: O picolinato expressou ação de secretagogo e sensibilizador da ação insulínica, com expressão mais significativa nos músculos envelhecidos.

Effect of daily temperature range on respiratory health in Argentina and its modification by impaired socio-economic conditions and PM_1_0 exposures

International Nuclear Information System (INIS)

Carreras, Hebe; Zanobetti, Antonella; Koutrakis, Petros

2015-01-01

Epidemiological investigations regarding temperature influence on human health have focused on mortality rather than morbidity. In addition, most information comes from developed countries despite the increasing evidence that climate change will have devastating impacts on disadvantaged populations living in developing countries. In the present study, we assessed the impact of daily temperature range on upper and lower respiratory infections in Cordoba, Argentina, and explored the effect modification of socio-economic factors and influence of airborne particles We found that temperature range is a strong risk factor for admissions due to both upper and lower respiratory infections, particularly in elderly individuals, and that these effects are more pronounced in sub-populations with low education level or in poor living conditions. These results indicate that socio-economic factors are strong modifiers of the association between temperature variability and respiratory morbidity, thus they should be considered in risk assessments. - Highlights: • Daily temperature range is a strong risk factor for respiratory infections. • Low education level and poor living conditions are strong modifiers of this relationship. • In Cordoba city higher risk for respiratory infections were observed during summertime. - Daily temperature range is a strong risk factor for respiratory infections, particularly for populations with low educational level or poor living conditions.

Rb/Sr and U/Pb isotopic ages in basement rocks of Mina Gonzalito and Arroyo Salado, Atlantic North-Patagonian Massif, Rio Negro, Argentina

International Nuclear Information System (INIS)

Varela, Ricardo; Sato, Ana M.; Cingolani, Carlos A.; Basei, Miguel A.S.; Siga, Oswaldo; Sato, Kei

1998-01-01

Isotopic ages from metamorphic and plutonic rocks of the Atlantic area of North Patagonian basement indicate that the main crustal tectonic events occurred during the late Proterozoic to early Paleozoic times. Rb/Sr and U/Pb data in the 550-470 Ma interval suggest an old tecto-thermal activity during the upper Brazilian Cycle (Rio Doce Orogeny). At regional scale, the comparable Neo proterozoic basement of Ventania and sedimentary for eland cover of Tandilia continues to the Northeast, in the Dom Feliciano Belt. A possible correlation of the North Patagonian basement with igneous-metamorphic relics of Central Argentina (Pampean Ranges of San Luis-Cordoba and at La Pampa province) is also indicated. (author)

Evaluación del efecto tóxico del acetato plomo y el cloruro de cromo sobre el metabolismo bacterial anaerobio

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Beatriz Wills

2004-01-01

Full Text Available Se presentan los resultados del estudio de toxicidad del cloruro de cromo (CrCl3 y el acetato de plomo (CH3COO2Pb del lodo de un reactor anaerobio de flujo ascendente y manto de lodos (UASB, aclimatado y estabilizado en el laboratorio con una solución de suero en polvo sintético; los ensayos de toxicidad se realizaron en botellas serológicas de 60 mL, se utilizaron como sustratos soluciones de ácido fórmico y suero en polvo sintético y se ensayaron concentraciones de cloruro de cromo en el rango de 1.000 a 5.000 mg/L, y de 1.000 a 10.000 mg/L para el acetato de plomo. Durante 72 horas se valoró la producción de metano en mL y el comportamiento del potencial redox en mV.Se presentaron reducciones del 50% en la producción de metano a concentraciones de 3.322 mg/L para cloruro de cromo y 1.415 mg/L para el acetato de plomo cuando el sustrato fue ácido fórmico, y a 2.291 mg/L para el cloruro de cromo y 1.982 mg/L para el acetato de plomo cuando el sustrato fue suero en polvo sintético.En síntesis, el artículo demuestra que las bacterias metanogénicas tienen un grado de resistencia cuantificable con respecto a las diferentes concentraciones de metales aplicados

PENETRACIÓN Y DISOLUCIÓN DEL REFRACTARIO DE CROMO-MAGNESIO POR ESCORIAS FAYALÍTCAS

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VANESA BAZÁN

2012-01-01

Full Text Available Los refractarios magnesia-cromo se han utilizado con éxito en diferentes procesos metalúrgicos a altas temperaturas, tales como hierro y acero, la industria del cemento y procesos pirometalúrgicos no ferrosos. En particular en la fundición, en los procesos de conversión de refino de cobre. Esos materiales tienen buenas características en relación con el uso y los requisitos de resistencia al choque térmico. Sin embargo, representan un problema importante en la contaminación del medio ambiente. El objetivo de este estudio fue investigar las interacciones entre la escoria generada en el convertidor Peirce-Smith e cobre y los ladrillos refractarios de magnesia-cromo ladrillos. Los fenómenos de infiltración y ataques químicos en el material refractario causado por la escoria formada durante el proceso de conversión de cobre se han estudiado mediante el desarrollo de las diferentes pruebas de laboratorio a temperaturas de hasta 1300 ° C.

Late holocene tectonic damming up in eastern Sierras Pampeanas, Cordoba, Argentina

International Nuclear Information System (INIS)

Massabie, A.C.; Limarino, C.O; Panarello, H.O.; Cordero, R.R; Bertels, A

2001-01-01

Neogene deformation due to Andean Orogeny has caused block faulting in the Sierras Pampeanas area, fracturing a Precambrian Paleozoic crystalline basement. These dislocations produced Late Tertiary to Quaternary landscape changes which are mainly expressed in clear and good preserved fluvial path modifications in sedimentary cover. The study of alterations of fluvial channel pattern associated with Quaternary tectonics has special neotectonic value in this central area of Argentina as a basic method to gain more precise temporal restrain of recent movements. Attention to this specific neotectonic field parallels general geologic knowledge evolution in Sierras Pampeanas. But in spite that nowadays better stratigraphic controls are available based on morphostructural, sedimentologic and paleontologic constraints (Massabie, 1999), still remain temporal uncertainties. Major difficulties for a more precise dating of neotectonic in the area of Sierras Pampeanas is a direct consequence of the random distribution of Neogene continental sediments located in different isolated basins which are mainly lacking of good bioestratigraphic control for comprehensive correlation. First steps in the study of Quaternary faulting dating in Sierras Pampeanas starts with the pioneer paper of Schlagintweit (1954) which reported a Quaternary faulting backed by stratigraphic and morphostructural considerations. Afterthen other papers about Quaternary faulting were presented based on similar geologic constraints (Lencinas y Timonieri, 1968; Massabie, 1976, 1987; Massabie and Szlafsztein, 1991; Kraemer et al., 1993; Massabie et al.,1998). In the way up to manage better adjust of Quaternary faulting dating in Sierras Pampeanas, there is a first work for Eastern Sierras Pampeanas presenting 14 C dating (Costa and Vita-Finzi, 1996). The authors postulated a late step of faulting younger than 1,300 for Comechingones fault with radiocarbon analysis based on organic matter in footwall colluvium

APORTES A LA CRONOLOGÍA ABSOLUTA DE LA ESTANCIA JESUÍTICA DE ALTA GRACIA (CÓRDOBA, ARGENTINA: ESTUDIO ARQUEOMAGNÉTICO DE LA BALDOSA DE LA PARROQUIA NUESTRA SEÑORA DE LA MERCED (Contributions to the Absolute Chronology of the Jesuit Mission of Alta Gracia (Cordoba, Argentina: An Archaeomagnetic Study of a Tile from the Parish of Nuestra Señora de la Merced

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Claudia Gogorza

2017-09-01

Full Text Available Este trabajo tiene como objetivo datar por medio del estudio magnético las baldosas de la parroquia Nuestra Señora de la Merced de la ciudad de Alta Gracia (Córdoba, Argentina, lamentablemente levantadas en 2012, con la finalidad de aportar a la cronología absoluta de la estancia jesuítica, declarada por la UNESCO Patrimonio de la Humanidad en 2000. El intervalo de edad obtenido (1780-1806 por medio del método arqueomagnético, usando el modelo global de predicción de campo geomagnético SHA.DIF.14k, corresponde a la etapa de administración de los Rodríguez (1772-1809, inclinándonos hacia el periodo de administración de José Rodríguez y su hijo Manuel, ya que el inmueble fue alquilado después. Es decir, que es improbable que la colocación de las baldosas se llevara a cabo durante el periodo jesuita ni tampoco que ocurriera durante la corta estadía del virrey Santiago de Liniers en los primeros meses de 1810. ENGLISH: This work aims to date the tiles of the parish of Nuestra Señora de la Merced in the city of Alta Gracia (Cordoba, Argentina using a magnetic methodology. Our objective was to contribute to the absolute chronology of the Jesuit Mission in this region, declared a UNESCO World Heritage site in 2000. The age interval (1780–1806 was obtained by means of the archeomagnetism using the SHA.DIF.14k geomagnetic field prediction model. This age corresponds to the stage of the Rodriguez administration (1772–1809, in particular the period of Jose Rodriguez and his son Manuel, since later the property was rented out. In other words, it is unlikely that the tiles were laid during the Jesuit period or during the short stay of the viceroy Santiago de Liniers in the early months of 1810.

Suplementação oral com picolinato de cromo em pacientes com diabetes tipo 2: um ensaio clínico randomizado

OpenAIRE

Paiva, Ana Nunes

2015-01-01

Diante da importância do papel do cromo no mecanismo da sensibilidade à insulina tem sido estudada a suplementação com este mineral em pacientes diabéticos. Assim, o objetivo deste estudo foi avaliar o efeito da suplementação oral com picolinato de cromo (PicCr) nas concentrações glicêmicas, lipidêmicas, perfil antioxidante e parâmetros antropométricos em pacientes com diabetes mellitus tipo 2 (DM2) mal controlados(hemoglobina glicada A1c (HbA1c) ≥ 7%). Para tanto, foi conduzido um ensaio clí...

Karyotypic polymorphism and evolution within and between the Liolaemus monticola (Iguanidae "northern 2n = 38-40" chromosome race populations in central Chile Polimorfismo cromosómico y evolución intra e inter poblacional de la raza cromosómica "Norte 2n = 28-40" de Liolaemus monticola (Iguanidae en Chile Central

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MADELEINE LAMBOROT

2001-03-01

Full Text Available Chromosomal genotypes were scored from 359 Liolaemus monticola lizards of the "northern, 2n = 38-40" chromosomal race from 21 locality samples between the Maipo (and one of its tributaries and the Aconcagua (and one of its tributaries ribers, plus a sample from the interracial hybridization zone, and some representative locality samples of the "southern 2n = 34" and the "multiple fission 2n = 42-44" chromosomal races for comparisons. The first seven variable chromosomal pairs were coded as Mendelian genotypes and statistically summarized by several clustering and population genetic algorithms. Spatial and temporal differentiation was assessed by chromosome frequencies, chromosomal diversity and heterozygosity. While no differentiation was found for diversity in the "northern 2n = 38-40" race, chromosomal frequencies and heterozygosity showed significant spatial differentiation that permit distinguishing between the coastal, Andean and transversal mountain range populations. The sample of Cuesta Chacabuco may represent a hybrid zone between the other two range samples. The origin of the chromosomal rearrangements, the population cytogenetics, and the recombination patterns resulting from chromosomal heterozygosity are compared in these chromosomal races, thus expanding the geographical area. These patterns are discussed with respect to the evolution of this complex in Chile and the importance of the riverine barriers in central ChileSe cuantificaron los "genotipos" cromosómicos para 359 lagartijas de 21 muestras poblacionales de la raza "Norte, 2n = 38-40" comprendida entre los ríos: río Maipo y uno de sus afluentes el río Yeso y río Aconcagua (y uno de sus afluentes el río Juncal. Con fines comparativos agregamos una muestra de la zona de hibridación interracial, algunas muestras representativas de la raza "Sur 2n = 34" y una de la raza "múltiples fisiones 2n = 42-44". Los siete primeros pares cromosómicos variables fueron codificados

Cuantificación de plomo, cadmio y cromo mediante sialoquímica

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GONZÁLEZ MIREYA

1997-01-01

Full Text Available Objetivo. Determinar las concentraciones de plomo, cadmio y cromo, y establecer su posible asociación con diferentes factores sociodemográficos. Material y métodos. Se seleccionó una muestra representativa de 100 estudiantes de posgrado de la Facultad de Odontología de la Universidad Nacional Autónoma de México (UNAM, a los cuales se les colectó saliva total no estimulada. Dichas muestras fueron analizadas por espectrofotometría de absorción atómica con horno de grafito. Resultados. Metales pesados como el plomo, el cadmio y el cromo se encuentran en concentraciones mucho más altas que las informadas en la literatura: Pb, = 3.10 m g/dL-1, máxima: 16.8 my g/dL-1, y mínima: 0.04 my g/dL-1; Cd, = 0.25 my g/dL-1, máxima: 2.04 my g/dL-1, y mínima: 0.004 my g/dL-1; y Cr, = 1.43 my g/dL-1, máxima: 4.82 my g/dL-1, y mínima: 0.05 my g/dL-1. Asimismo, variables como la zona de residencia, el sexo, la edad y la ingesta de comida enlatada no influyen en los niveles de plomo y cromo. Sin embargo, en el caso del cadmio y la edad existe una asociación inversa (ji²= 5.9012, p<= 0.05; gamma = -0.5224, p<= 0.05. Conclusiones. La sialoquímica juega un papel importante en la detección de contaminantes, fármacos, drogas y enfermedades locales y sistémicas. La contaminación por metales pesados sigue siendo un problema de salud pública, por lo que el gobierno debe consolidar un programa cuyo objetivo sea eliminar los diferentes contaminantes del ambiente. Asimismo, se deben realizar otros estudios para verificar la asociación de variables como sexo, edad, uso de cerámica vidriada, alimentación y zona de residencia con las concentraciones de metales pesados en saliva.

Exploration of ceramic clays in the countryside of Cordoba (Spain); Prospeccion de arcillas ceramicas en la campina de Cordoba (Espana)

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Diaz Sanchez, A.; Ayuso Munoz, J.

2010-07-01

This paper deals with some aspects of the mining prospection of clays in the South of Cordoba (Spain). That studied clays are used as raw materials in a processing plant of ceramic products. In this ground characterisation for future mining operations, low proportion of carbonated materials was searched. To carry out the study, three seek areas were defined, each one of them of about 4 Km{sup 2}, where two geophysical methods were applied (Electrical Resistivity Tomography and Vertical Electrical Sounding). X-ray diffraction, EDAX, direct cut, compaction, swelling and bearing capacity tests, among others, were carried out in samples picked up in each seek area. Using the information provided by all these tests the most interesting areas for the exploitation defined. These studies resulted in the selection of new interesting deposits for the clay industry. (Author)

Estudio de la recuperación de cromo hexavalente mediante un reactor electroquímico de compartimentos separados por separadores cerámicos

OpenAIRE

REYES PINEDA, HENRY

2011-01-01

La Tesis Doctoral "Estudio de la recuperación de cromo hexavalente mediante un reactor electroquímico de compartimentos separados por separadores cerámicos" se centra en la posibilidad de recuperación del cromo hexavalente procedente de las disoluciones de mordentado de las industrias de metalizado de plásticos mediante la utilización de un reactor electroquímico de compartimentos separados por separadores cerámicos fabricados a diferente presión y diferente composición de almidón. Con la rec...

Medicina, Reordenamientos Cromosómicos y sus Bases Moleculares en los Procesos Oncohematológicos

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Jorge J. Yunis

1993-08-01

Full Text Available

Sus posibilidades en el diagnóstico, como criterio pronóstico y para la detección de la enfermedad residual

Introducción

Se ha demostrado claramente que en pacientes con enfermedades neoplásicas existen frecuentemente reordenamientos genómicos específicos. Uno de los mecanismos de transformación mejor entendido es el que tiene lugar en un gran número de leucemias y linfomas del tipo no-Hodgking. En ellos se ha observado la existencia de un defecto específico estructural clonal a nivel cromosómico. Frecuentemente, el defecto consiste en una translocación recíproca, con dos puntos de ruptura muy precisos. Uno de estos puntos de ruptura se sitúa en el lugar de un proto-oncogén que se desregula por causa del reordenamiento cromosómico.

Esta falta de regulación, después del reordenamiento, es de efecto dominante, en el que un proto-oncogén se transforma en oncogén. Con el reordenamiento cromosómico puede resultar que el segmento de un proto-oncogén se fusiona con el segmento de otro gen en el segundo cromosoma, creando un defecto único o específico de cáncer en el cual el nuevo gen híbrido produce una proteína de fusión (por ejemplo la fusión de los genes BCRI ABL in la t(9;22 de la leucemia mieloide crónica.

Alternativamente el proto-oncogén de un cromosoma se desregula por su proximidad a una secuencia reguladora de otro gen en el segundo cromosoma. En este caso el proto-oncogén convertido en oncogén mantiene la estructura proteica normal pero se produce anormalmente (por ejemplo MYC an la t(8;14 en ellinfoma de Burkitt.

Anivel clínico, el análisis cromosomal es un instrumento de diagnóstico eficaz. Por ejemplo, cuando se utilizó el análisis cromosómico de alta resolución en un estudio de más de 800 pacientes con cáncer, llevado a cabo en nuestro laboratorio, se pudo determinar que las células malignas de la mayor parte de los tumores

Some comments of the parlamentary actions about the province of Cordoba's nuclear policy law

International Nuclear Information System (INIS)

Martin, H.R.; Muller, E.

1991-01-01

In this paper, the actual status of the Cordoba Province's Nuclear Policy Law in Argentine Republic is presented. The different actions made in the parlamentary treatment of the law are described in detail, with mention of the more important subjects from each political force. The contents of the law are described in detail with special emphasis on the historical development of them. (Author) [es

Reproductive activity and performance of ½ Nellore and heifers fed with supplementation with organic chromium Atividade reprodutiva e desempenho produtivo de novilhas nelore taurino submetidas a suplementação com cromo orgânico

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Joilmaro Rodrigo Pereira Rosa

2011-06-01

Full Text Available This experimental evaluated the start of reproductive activity, body weight gain and carcass finishing of two genetic groups of heifers submitted to mineral supplementation with organic chromium. 90 heifers with 12 months of age were divided into four groups: 30 Nellore with chromium, 30 Nellore without chromium, 15 ½ Taurine with chromium, 15 ½ Taurine without chromium. For 12 months the animals were weighed every 28 days and ultrasound exams performed with 15 months of age for reproductive evaluation and 18 months for carcass evaluation. There was interaction between genetic groups and organic chromium supplementation for body weight at slaughter and body weight gain. The ½ Taurine heifers supplemented with chromium showed greater body weight at slaughter (330.1kg and body weight gain (0,563kg/day than Nellore heifers with chromium (304.8kg; 0,414kg/day, Nellore without chromium (304.7kg; 0,401kg/day and ½ Taurine without chromium (298.6kg; 0,408kg/day. However there was no effect of interaction between genetic groups and chromium organic supplementation, of genetic groups and of chromium organic supplementation on carcass characteristic. The use of organic chromium supplementation showed improvements on body growth and on the start of reproductive activity in heifers, without changing the finishing carcass characteristic.O presente experimento avaliou o início da atividade reprodutiva, ganho de peso corporal e acabamento de carcaça de dois grupos genéticos de novilhas submetidas à suplementação mineral com cromo orgânico em pastejo sob lotação intermitente. Noventa novilhas (60 Nelore e 30 ½ taurino de 12 meses de idade foram separadas em quatro grupos: Trinta fêmeas Nelore com cromo, 30 fêmeas Nelore sem cromo, 15 fêmeas ½ sangue taurino com cromo e 15 fêmeas ½ sangue taurino sem cromo. Durante 12 meses os animais foram pesados a cada 28 dias e os exames ultrassonográficos realizados aos 15 meses de idade para avalia

USO DE CENIZA VOLANTE EN LA REMOCIÓN DE CROMO (III DE LOS EFLUENTES LÍQUIDOS DE CURTIEMBRES

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Edison Gil Pavas

2010-10-01

Full Text Available El presente estudio describe un método simple y económico para la remoción de cromo (III de efluentes líquidos de la industria de curtiembres utilizando ceniza volante. El proceso se llevó a cabo en forma discontinua utilizando como variables la masa de ceniza volante, el tiempo de contacto y la temperatura o el pH, Con estas variables se realizó un diseño de experimentos tipo Box-Wilson, el cual se optimizó posteriormente empleando un programa estadístico. Se utilizó una ceniza volante original y otra sometida a un tratamiento químico. Los resultados mostraron la posibilidad de bajar concentración inicial de cromo de 1850 ppm a una final de 0,008 ppm, cumpliendo así con las exigencias ambientales sobre este agente contaminante.

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

International Nuclear Information System (INIS)

Pignata, Maria Luisa; Pla, Rita R.

2001-01-01

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

O uso e os impactos da reciclagem de cromo em indústrias de curtume em Mato Grosso do Sul, Brasil Usage and recycling of chromium at tanneries in Mato Grosso do Sul, Brazil

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Tânia Christina Marchesi de Freitas

2006-12-01

Full Text Available Um estudo da dinâmica de emissão de cromo foi realizado em dois curtumes representativos de Mato Grosso do Sul. Apenas cromo III foi encontrado durante a investigação. Foram realizadas extensivas análises químicas de cromo nos efluentes e corpos receptores durante seis meses e os valores obtidos foram comparados com os da legislação existente. Demonstrou-se que, em alguns casos, a concentração de cromo atinge níveis ecologicamente perigosos, pois foram encontrados valores acima do permitido para águas. O processo de reciclagem de cromo em curtumes mostrou-se como um processo para a normalização das concentrações de cromo nas diferentes etapas de produção e na emissão desse elemento.A study of the dynamics of chromium emissions was carried out at two major tanneries operating in the State of Mato Grosso do Sul. Chromium III was the only species found during the investigation. Extensive chemical analyses for chromium were performed at the effluents and receptive sites for six months and the results were compared with the values required by the existing official acts, showing that they are were above ecologically dangerous levels. The concentrations of chromium in waters also were found to exceed the permissible values, but with a tendency toward reduction. Recycling was found to be the important operation capable of normalizing chrome concentrations at the various steps of production and in the release of this element into the environment.

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

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Giordano Miguel O.

2004-01-01

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

Bioacustical and etho-ecological features in amphibian communities of Southern Cordoba province (Argentina

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Salas, Nancy E.

1998-01-01

standardized monitoring practices. In the present work, the most important etho-ecological differences (reproduction habitat, call site, daily and seasonal activity of species that constitute the communities of southern Cordoba Province are indicated, and a classification of advertisement calls is provided. The anuran fauna of the plain area of the southern-central Córdoba Province is represented by 9 species of leptodactylids belonging to 5 genera (Leptodactylus gracilis, L. mystacinus, L. latinasus latinasus, L. ocellatus, Pleurodema tucumanum, Physalaemus biligonigerus, Odontophlynus americanus, Ceratophrys cranwelli and C. ornata, 2 species of bufonids (Bufo arenarum and B. fernandezae and one hylid (Hyla pulchella pulchella. The acoustic records obtained in the field during the reproductive period were analyzed through a program of sound digital analysis comparing the following parameters: dominant frequency, call duration and interval between calls; descriptions regarding type of call and modulation were also made. Three types of basic calls were recognized based on duration; this category was sub-divided depending on the shape of the oscillographic image. Results of this analysis revea] marked differences between advertisement calls, mainly at the level of dominant frequency ranges and call duration. This partition of sound space represents a mechanism of mating isolation that minimizes the interaction between sympatric species that breed at the same time.

La violencia laboral hacia trabajadores/as de instituciones de salud de la ciudad de Córdoba, Argentina

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Gabriel Acevedo

2010-07-01

Full Text Available Workplace violence occurs in different types: mobbing, sexual harassment, physical and psychological aggression and discrimination. Research shows that health workers are victims of 25 per cent of the reported cases of workplace violence. In Argentina, the dimension of the problem is little known; therefore, the objective of the present study is to determine the frequency of violence against health workers. A cross-sectional study was designed and a random sample selected; a survey was administered to 336 workers in health facilities in Cordoba. 21.2 per cent of respondents reported having experienced mobbing; 6.2 per cent experienced sexual harassment, while 8.7 per cent and 28.3 per cent suffered physical violence and psychological aggression, respectively. The following conclusions were reached: different types of violence are often present in the centers studied, little investigation has been carried out and the health workers responded that they feel unprotected.

BIOADSORCIÓN DE CROMO (VI EN SOLUCIÓN ACUOSA POR LA BIOMASA DE AMARANTO (Amaranthus caudatus

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Adriana Rodríguez

2017-01-01

Full Text Available Se analizó la capacidad de remoción de Cromo (VI en solución acuosa por la biomasa de Amaranto, por el método de la d ifenilcarbazida. La mayor bioadsorción (100% con 100 mg/L del metal fue a las 4 horas, a pH de 1.0, 28 o C y 5 g de biomasa . Con respecto a la temperatura, la más alta remoción fue a los 60 o C, con un 100% de remoción a los 75 minutos. A las concentraciones de Cromo (VI analizadas, la biomasa natural mostró una excelente capacidad de remoción, además de que re mueve eficientemente el metal in situ (72% y 63% de remoción en tierra y agua contaminadas, a los 7 días de incubación con 2 5 g de la biomasa . Los resultados muestran que el biosorbente utilizado remueve Cr(VI , de aguas residuales industriales , satisfact oriamente .

Factores de riesgo para osteoporosis primaria en mujeres de Córdoba, Argentina Primary osteoporosis risk factors in women from Córdoba, Argentina

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Domingo C. Balderramo

2004-10-01

Full Text Available Estudiamos una serie de mujeres de la ciudad de Córdoba, Argentina, para definir los factores de riesgo clínicos prevalentes para osteoporosis lumbar. Se analizaron las pacientes que realizaron consulta en relación al diagnóstico o tratamiento de osteoporosis entre enero de 2000 y junio de 2002. Todas las pacientes fueron estudiadas mediante densitometría ósea de doble haz de rayos X, siendo excluidas del análisis aquellas con diagnóstico de osteoporosis secundaria. Según la densidad mineral ósea de columna lumbar se establecieron dos grupos de pacientes utilizando el criterio de la OMS: Grupo Osteoporosis (T score Risk factors for osteoporosis were evaluated in women from Cordoba, Argentina. Female patients that consulted about diagnosis or treatment of osteoporosis from January 2000 to June 2002 were included. Secondary osteoporosis patients were excluded. Participants were studied using standardized questionnaire, clinical examination, biochemical analysis, and dual-energy X-ray absorptiometry (DXA. According to lumbar spine DXA results and WHO criterion, we considered 2 groups: Osteoporosis (T score < -2.5 standard deviation, SD and Control (T score ≥ -2.5 SD. One hundred and fifty five women (Osteoporosis Group: 47; Control Group: 108 were studied. In univariate analysis age, years from menopause, weight, smoking duration, estrogen replacement therapy duration, bilateral oophorectomy with hysterectomy, alkaline phosphatase levels, and Pouteau-Colles fractures were different between both groups. After multivariate analysis, including variables that were statistical different in univariate analysis, and considering osteoporosis as dependent variable, body weight (Odds Ratio, OR=0.92; CI 95% 0.87-0.98, alkaline phosphatase (OR=1.01; CI 95% 1.00-1.02, years from menopause (OR=1.12; CI 95% 1.05-1.21, and Pouteau-Colles fractures (OR=15.15; CI 95% 1.68-135.7 were independent risk factors for osteoporosis.

Proceedings of the International Conference on Educational Data Mining (EDM) (2nd, Cordoba, Spain, July 1-3, 2009)

Science.gov (United States)

Barnes, Tiffany, Ed.; Desmarais, Michel, Ed.; Romero, Cristobal, Ed.; Ventura, Sebastian, Ed.

2009-01-01

The Second International Conference on Educational Data Mining (EDM2009) was held at the University of Cordoba, Spain, on July 1-3, 2009. EDM brings together researchers from computer science, education, psychology, psychometrics, and statistics to analyze large data sets to answer educational research questions. The increase in instrumented…

Reorganization of the radiologic protection of the nuclear reactor RA-0 for the next starting up at Cordoba National University

International Nuclear Information System (INIS)

Martin, H.R.; Chautemps, N.A.; Rumis, D.A.

1991-01-01

Due to the fulfillment to the tasks for the new starting up of the RA-0 Nuclear Reactor situated at the National University of Cordoba, it was necessary to plan and organize the service of Radiologic Protection to meet the future requirements in normal operation. The special characteristics that an installation of this type has in the university field, required special attention for making the university staff become aware in the working proceedings to follow up in normal conditions, such as the case of emergency that would originate in the installation. The training of the teaching and non teaching staff of the National University of Cordoba, the adjusting of the installations, the obtention of dosimetry and measurement equipment and the implementation of a monitor system of the staff were the main tasks confronted for the reorganization of the sector. (Author) [es

Redução química e biológica do cromo hexavalente aplicado ao solo

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D. D. Castilhos

2001-06-01

Full Text Available Realizou-se um experimento em laboratório, com o objetivo de avaliar não só a redução do cromo hexavalente aplicado ao solo com ênfase ao efeito da aplicação de carbono orgânico, manganês divalente, mas também a participação da microbiota do solo. Utilizaram-se, como unidades experimentais, amostras de 50 g de um Argissolo, acondicionadas em sacos de polipropileno e incubadas durante 42 dias com calcário para elevar o pH a 6,0 (2,0 t ha-1 de CaCO3 + MgCO3 na proporção de 2:1, Cr6+, esterco bovino e Mn2+ nas doses de 20, 50 e 40 mg kg-1, respectivamente. Metade das amostras foi sujeita à esterilização por autoclavagem com o objetivo de eliminar a atividade biológica. A aplicação de esterco bovino e sulfato de manganês promoveu a total redução do cromo hexavalente para cromo trivalente (Cr6+ → Cr3+ no solo, em 42 dias. Os modelos, quadrático e exponencial, foram os que melhor descreveram a cinética de redução com o tempo. A redução do Cr6+ foi estimulada pela atividade microbiana, sendo 16% maior em amostras de solo não esterilizadas, que continham esterco bovino, em comparação com as mesmas amostras esterilizadas por autoclavagem. Os resultados demonstraram que a descontaminação do solo que contém teores tóxicos de Cr6+ pode ser viabilizada tanto pela incorporação de adubo orgânico como pela manutenção de sua atividade biológica.

CUERPO Y MODERNIDAD EN COLOMBIA DURANTE LA DÉCADA DE LOS CUARENTA: AN APPROACH FROM CROMOS MAGAZINE

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Harvey Murcia Quiñones

2015-01-01

Full Text Available Este artículo presenta las maneras como el cuerpo fue registrado visual y textualmente en una de las revistas más importantes a mediados del siglo XX en Colombia: Cromos. El trabajo tiene como propósito resaltar las tensiones y los regímenes semióticos con los que el lenguaje empieza a experimentar la realidad social y el cuerpo. El periodo de tiempo analizado va desde 1940 hasta 1949, años marcados por la violencia, bonanzas económicas y rupturas en las políticas culturales y gubernamentales. En esta época también se dinamiza la idea de una modernidad más industrializada -más fabricada- y aumentan las narrativas sobre la ciudad como forma discursiva. Así, lo que se quiere resaltar es cómo en la revista Cromos se exterioriza una forma de enunciar un cuerpo, las estrategias semióticas y narrativas sobre cuerpo para dotarlo de un sentido más cercano a las propuestas que implicaban los cambios sociales del periodo a analizar.

MINIMIZACIÓN DE RESIDUOS DE CROMO MEDIANTE LA APLICACIÓN DE UNA TÉCNICA DE RECICLADO DIRECTO DE LICORES DE PIQUELADO - CURTIDO EN EL PROCESAMIENTO DE PIELES

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Ramiro Escalera Vásquez

2013-07-01

Full Text Available Uno de los problemas ambientales confrontados por las curtiembres bolivianas es la emisión de residuos líquidos contaminados con cromo, del cual se desechan significativas cantidades en los procesos convencionales. Aunque este versátil metal pesado juega un rol importante en el metabolismo de plantas y animales, en bajas concentraciones, sus derivados oxidados, Cr (VI, son extremadamente tóxicos. Como alternativa de prevención de la contaminación, se ha realizado una investigación en torno a la aplicación del método de Reciclado Directo  de Licores Residuales en la etapa de piquelado - curtido de pieles. Se ha demostrado mediante numerosas corridas experimentales realizadas en laboratorio y en planta, que el reciclaje directo de licores residuales de curtido es técnicamente viable para su implantación en las etapas de piquelado y curtido del proceso de fabricación de cueros al cromo en una curtiembre común. La calidad del cuero terminado no se deteriora con el re-uso directo de los licores de cromo hasta en 10 reciclos. El control del proceso puede realizarse con la medición de parámetros muy simples: La densidad de los licores, la fuerza iónica relacionada con la densidad, el grado de acidez (pH y la concentración de cromo en los licores residuales. Se generan ahorros importantes en el consumo de reactivos químicos, entre el 9% y el 44%, y sobre todo, en consumo de agua, 77%. La mitigación del impacto ambiental producido por el contenido de Cr(III en los licores de curtido, se traduce en una disminución de más de 70% de la masa desechada de Cr(III, cuando se usa el reciclado directo, respecto de la masa que se desecha en curtidos normales sin reciclo. La implementación del reciclado directo de licores de cromo es replicable a otras industrias similares, que existen en gran número en Bolivia.

ESTUDIO DE LA ADSORCION DE CROMO HEXAVALENTE COMO BIOMATERIAL LA ECTODERMIS DE OPUNTIA

OpenAIRE

Eduardo Campos Medina

2008-01-01

En este artículo se presenta el fenómeno de adsorción química como una opción viable en el tratamiento de aguas residuales que contiene disueltos iones metálicos, específicamente se aborda el estudio del Cromo Hexavalente, el cual se puso en contacto con el biomaterial de Ectodermis de Opuntia. Dicho biomaterial se puso en contacto con soluciones de dicho elemento solo y formando un complejo coloreado con la difenilcarbazida (DFC), esto con la finalidad de estudiar el comportamiento de la ads...

Health Reform and its Impact on Healthcare Workers: A Case Study of the National Clinical Hospital of Cordova, Argentina

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Carlos Álvarez

2007-10-01

Full Text Available Since the mid 1990’s, health in Argentina has no longer been considered a social function of the State but was transformed into a market commodity. Neoliberal decentralization favored the introduction of corporate methods and incentivized privatization. In practice, this led to self-management for hospitals, deregulation of social services and incorporation of private capital to the public health business. This exploratory study looks at the impact of these reforms in the public health services sector. It analyzes living and working conditions, changes produced in the organization of work and their effect on labor relations and on participation in union, political and social activities by workers at the National Clinical Hospital of Cordoba, Argentina. Data was primarily collected through an interview survey of a convenience sample of 68 workers from the non-teaching staff; this represents 10% of the total professional, administrative and maintenance staff of the hospital. The interviews demonstrate deterioration in income and living conditions. Hospital self-management for these workers led to increased competition, the fragmentation in the work spaces, tension and the distrust between co-workers, as well as increased intensity in the workload of some employees. The profile of these healthcare workers is structured and marked by silence, the resolution of the conflicts by means of individual action in the workplace, and minimal participation in social-political-union or community organizations.

Planteamiento y evaluación de las aplicaciones de los productos obtenidos en la hidrólisis alcalina de las virutas de cromo generadas durante el procesamiento del cuero

OpenAIRE

Díaz, Andrea; Jiménez, Juliana; Pérez, Monica; Narváez Rincón, Paulo César

2010-01-01

Considerando el concepto de maximizar la reutilización de residuos sólidos de curtiembres en diversos usos industriales y la minimización del impacto ambiental que estos generan, se evalúan algunas aplicaciones de los subproductos obtenidos por la hidrólisis alcalina de las “virutas de cromo”5 generadas durante la etapa de rebalado en el procesamiento del cuero. El hidróxido de cromo obtenido transformado en sulfato de cromo mo- nobasico puede reutilizarse en el procesamiento del cuero co...

Helosis (Balanophoraceae en Argentina Helosis (Balanophoraceae in Argentina

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José Luis Fontana

2006-07-01

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

Repercusiones del picolinato de cromo en el metabolismo proteico en función de la edad Repercussions of chromium picolinate in the protein metabolism based on the age

OpenAIRE

M. J. González Muñoz; I. Meseguer; M. C. Martínez Para; M. V. Aguilar; A. Bernao

2006-01-01

Antecedentes: Comercializado como suplemento dietético, el picolinato de cromo ha sido promocionado como constructor muscular y como un agente de pérdida de peso, al incrementar el músculo esquelético por su acción sobre la insulina. Objetivo: En este estudio se ha evaluado el efecto que, la suplementación de la dieta de ratas en distintas etapas de crecimiento (infantil y puberal), con 500 µg Cr/día en forma de picolinato de cromo (12 días), tiene sobre su crecimiento y utilización pro...

Proceedings of the Second Congress of Radiochemotherapy and Brachytherapy and the Fifth Meeting of Medical Physics

International Nuclear Information System (INIS)

Zunino, Silvia; Venencia, Daniel; Martinez, Monica; Garrigo, Edgardo

2009-01-01

The Marie Curie Foundation in the city of Cordoba in Argentina, has organized the Second Congress of radiochemotherapy and brachytherapy and the Fifth Meeting of Medical Physics in order to collaborate with the scientific growth of radiation oncology and medical physics. The main topics covered were: patient's radioprotection, brachytherapy with iodine, radiation protection regulatory issues in Argentina, risk analysis in radiotherapy, medical radiation therapy, EPID dosimetry (Electronic Portal Image Device), accidents in radiotherapy, among others. [es

Influência do cromo no desempenho, na qualidade da carne e no teor de lipídeos no plasma sanguíneo de frangos de corte Chromium influence on performance, meat quality and concentration of lipids in broiler blood plasma

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Luciana Maria Garcia de Souza

2010-04-01

Full Text Available Avaliou-se o efeito da suplementação de cromo na dieta sobre o desempenho, o rendimento de carcaça, a qualidade da carne, o teor de colesterol no peito e os parâmetros bioquímicos do sangue de frangos de corte. O delineamento experimental utilizado foi o inteiramente casualizado, com cinco níveis de tripicolinato de cromo (0, 150, 300, 450 e 600 µg/kg de cromo e seis repetições de 50 aves por unidade experimental. A utilização do tripicolinato de cromo não teve efeito no desempenho dos frangos de corte. Os níveis de cromo não influenciaram o rendimento de carcaça nem o pH do peito dos frangos aos 42 dias de idade. Em avaliação da composição de matéria seca, proteína bruta e extrato etéreo da carne de peito, apenas a porcentagem de extrato etéreo foi influenciada, e de forma quadrática, pelos níveis de cromo na dieta. O nível de 218,2 µg de cromo diminuiu a porcentagem de extrato etéreo em 7,03 em comparação à ausência de cromo. A suplementação de cromo nas dietas não influenciou o teor de colesterol total na carne do peito, mas alterou os níveis de HDL aos 14 dias de idade e os de VLDL e os triglicérides aos 21 dias de idade. A suplementação dietética de cromo não influenciou o desempenho e rendimento de carcaça. Níveis entre 218,2 e 360,3 ìg de cromo interferem no teor de gordura da carne e nos níveis de lipídeos do sangue dos frangos de corte.The aim of this work was to evaluate the effect of dietary chromium supplementation on performance, carcass yield, meat quality, cholesterol level on the breast and blood biochemical parameters on broilers. It was used a complete randomized experimental design with five levels of chromium tripicolinate (0, 150, 300, 450 and 600 µg/kg of chromium and six replicates with 50 broilers per experimental unit. The use of chromium tripicolinate had no effect on the performance of broilers. The levels of chromium did not change the carcass yield neither the breast p

Argentina.

Science.gov (United States)

1986-06-01

This discussion of Argentina covers geography, the people, history and political conditions, government, economy, foreign relations, and relations between the US and Argentina. In 1985, the population of Argentina was estimated to be 30.6 million with an estimated annual growth rate of 1.5%. The infant mortality rate is 34.1/1000, and life expectancy is 70.2 years. Argentina, which shares land borders with Bolivia, Brazil, Chile, Paraguay, and Uruguay, is bounded by the Atlantic and the Antarctic Oceans. Descendants of Italian and Spanish immigrants predominate in Argentina, but many trace their origins to British and West and East European ancestors. In recent years, there has been a substantial influx of immigrants from neighboring Latin American countries. The native Indian population, estimated to be 50,000, is concentrated in the peripheral provinces of the north, northwest, and south. What is now Argentina was discovered in 1516 by the Spanish navigator Juan de Solia. The formal declaration of independence from Spain was made on July 9, 1816. In the late 19th century, 2 forces worked to create the modern Argentine nation: the introduction of modern agricultural techniques and the integration of Argentina into the world economy. Argentina has impressive human and natural resources, but political conflict and uneven economic performance since World War II have impeded full realization of its considerable potential. Yet, it is one of the wealthiest countries in Latin America. Among the reasons for the military coup of March 1976 was the deteriorating economy, caused by declining production and rampant inflation. Under the leadership of the Minister of the Economy, the military government focused attention on those immediate problems, and, in 1978, embarked on a new development strategy focusing on the establishment of a free market economy. There was little improvement in the economy, and a new economic plan was introduced in 1985 which has capped inflation by

Current applications of probiotic foods in Africa

African Journals Online (AJOL)

ONOS

2010-01-25

Jan 25, 2010 ... Natural Food Preservation Systems. In: Wood BJB (Ed). The Lactic. Acid Bacteria. Vol. 1 Elsevier Science Publishers, London. FAO/WHO (2001).Health and nutritional properties of probiotics in food including powder milk with live Lactic acid bacteria. Cordoba,. Argentina: Food and Agriculture Organization ...

Redução de cromo hexavalente por bactérias isoladas de solos contaminados com cromo Reduction of hexavlent chromium by isolated bacteria of contaminated soils with chromium

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Daniele Conceição

2007-12-01

Full Text Available A redução do Cr(VI para Cr(III diminui a toxidade deste metal no ambiente, uma vez que o Cr(III é insolúvel às membranas biológicas. Assim, a redução microbiana do Cr(VI é uma alternativa para reduzir os impactos ambientais causados por este metal, utilizado em diversos processos industriais. O objetivo deste trabalho foi selecionar microrganismos a partir de solo contaminado com cromo e caracterizar sua capacidade de redução do Cr(VI durante o crescimento celular. A atividade de redução do Cr(VI pelos isolados foi quantificada com o reagente de s-difenilcarbazida. No isolamento, foram obtidas 20 bactérias resistentes a cromo(VI; seis destas foram capazes de reduzir acima de 100mg L-1 Cr(VI em 24 horas. As bactérias selecionadas foram eficientes na redução do Cr(VI e apresentam potencial para outros estudos, visando à aplicação em processos de biorremediação.The reduction of Cr(VI to Cr(III decrease the toxic effect of this metal in the environment, because Cr(III is insoluble to the biological membranes. The microbial reduction of Cr(VI it is an alternative to reduce the environmental impacts caused by this metal used in several industrial processes. The objective of this research was to select microorganisms from chromium contaminated soil and to characterize their ability to reduce Cr(VI. The activity of reduction of Cr(VI for the isolated was quantified with s-diphenylcarbazide. A group of 20 chromium resistant bacteria were isolated; six of these were able to reduce 100mg L-1 Cr(VI in 24 hours. The isolated bacteria, from contaminated soil can remediate chromate and presented potential for other studies seeking their application in bioremediation processes.

Isolation of human fungi from soil and identification of two endemic areas of Cryptococcus neoformans and Coccidioides immitis

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Héctor Rubinstein

1989-02-01

Full Text Available The present study was carried out in two different areas of Province of Cordoba, Argentina, where there was a suspicious of endemic mycosis. The previous data were the presence of a clinical case of pulmonary cryptococcosis in one area (Alta Gracia and the previous findings of a high incidence of coccidioidin and cryptococcin reactors in the population of the second one (Villa Dolores. In both areas soil samples for fungi were studied and Cryptococcus neoformans was found in 2/25 samples from Alta Gracia. In Villa Dolores Coccidioides immitis was isolated in 2/40 samples, and C. neoformans in 1/40 samples. Delayed hypersensitivity test with cryptococcin was determined in the population from Alta Gracia and it was found to be 5.3%. Positive cutaneous tests with coccidioidin (33.8% and cryptococcin (31.9% in Villa Dolores were obtained. With these findings two endemic areas of systemic mycoses in Cordoba, Argentina were delimited.

Determinação das espécies de cromo nas cinzas da incineração de couro wet-blue em reatores de leito fixo e leito fluidizado

OpenAIRE

Clauren Moura Martins

2001-01-01

Este trabalho tem como objetivo a determinação quantitativa da concentração de cromo (III, VI e total) nas cinzas de serragem de couro wet-blue, incineradas em reatores de leito fixo nas temperaturas de 450, 550 e 650 C e reator de leito fluidizado nas temperaturas de 730, 780, 830 e 850 C, verificando se estes resultados estão dentro dos limites permitidos pelas normas ambientais brasileiras e, consequentemente, se em relação à concentração de cromo, os processos de incineração utilizados sã...

Déficit, crédito y deuda pública: Córdoba, Argentina, 1920-1940

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Félix Converso

2009-06-01

Full Text Available El propósito de este artículo es estudiar la evolución de las finanzas de la provincia de Córdoba, circunscribiéndolo al análisis del crédito interno y externo, y establecer la dimensión de la consecuente deuda pública comprometida y su servicio, sin perder de vista la utilización de los capitales recibidos y de los títulos internos emitidos. Comprendiendo un periodo de entreguerras de importancia en la economía argentina, que a la vez se encontraba conmocionada por los efectos de dos grandes crisis, convencionalmente situadas en 1914 y 1930.The intention of this article is to study the evolution of the finances of the province of Cordoba, circumscribing it to the analysis of the internal and external credit Besides, to establish the dimension of the resulting national debt and its service, without losing of sight the use of the received capitals and the emitted internal tides. Including an inter-war period of importance in the Argentine economy, which simultaneously was shocked by the effects of two major crises, conventionally placed in 1914 and 1930.

Autism Spectrum Disorders (ASD) in Blind Children: Very High Prevalence, Potentially Better Outlook

Science.gov (United States)

Jure, Rubin; Pogonza, Ramón; Rapin, Isabelle

2016-01-01

Autism spectrum disorders affected 19 of 38 unselected children at a school for the blind in Cordoba, Argentina. Autism was linked to total congenital blindness, not blindness' etiology, acquired or incomplete blindness, sex, overt brain damage, or socioeconomic status. Autism "recovery," had occurred in 4 verbal children. Congenital…

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.

First symposium accelerated partial breast irradiation

International Nuclear Information System (INIS)

2012-01-01

The First symposium accelerated partial breast irradiation, was organized by the Marie Curie Foundation, between the 14 to 16 june 2012, in the Cordoba city of Argentina. In this event were presented some papers on the following topics: radiotherapy in breast cancer; interaction between systemic treatments and radiotherapy; interstitial brachytherapy.

Suplementação com cromo e desempenho reprodutivo de vacas zebu primíparas mantidas a pasto

Directory of Open Access Journals (Sweden)

Aragón V.E.F.

2001-01-01

Full Text Available Foram utilizadas 126 vacas zebu primíparas, mantidas a pasto durante a estação de monta, divididas em dois grupos, suplementado (72 animais e controle (54 animais, com o objetivo de estudar a influência da suplementação com cromo (Cr sobre algumas características reprodutivas. Utilizou-se como fonte de cromo a levedura Sacharomices cerevisae adicionada à mistura mineral (0,017% Cr. Não houve diferença significativa nos pesos das crias ao nascer e ao final do experimento. O peso final das vacas foi maior no grupo suplementado (428,5kg vs. 380,5kg. A porcentagem de animais em estro foi maior no grupo suplementado (98,6% vs. 88,7% e a porcentagem total de prenhez apresentou apenas tendência em ser maior no grupo suplementado (87,5% vs. 75,47%. O intervalo parto-primeiro cio foi menor nos animais que receberam Cr (120,5 dias vs. 142,8 dias. O número de doses de sêmen por vaca inseminada (1,57 e por vaca gestante (1,85 no grupo controle foi semelhante ao de vacas inseminadas (1,69 e gestantes (1,90 no grupo suplementado.

Human fascioliasis in Argentina: retrospective overview, critical analysis and baseline for future research

Directory of Open Access Journals (Sweden)

Cuervo Pablo

2011-06-01

Full Text Available Abstract In Argentina, human fascioliasis has never been adequately analysed, although having a physiography, climate, animal prevalences and lymnaeids similar to those of countries where the disease is endemic such as Bolivia, Peru and Chile. We performed a literature search identifying 58 reports accounting for 619 cases, involving 13 provinces, their majority (97.7% from high altitudes, in central mountainous areas and Andean valleys, concentrated in Cordoba (430 cases, Catamarca (73, San Luis (29 and Mendoza (28, the remaining provinces being rarely affected. This distribution does not fit that of animal fascioliasis. Certain aspects (higher prevalence in females in a local survey, although a trend non-significant throughout Argentina but not others (patient's age 3-95 years, mean 37.1 years resemble human endemics in Andean countries, although the lack of intensity studies and surveys in rural areas does not allow for an adequate evaluation. Human infection occurs mainly in January-April, when higher precipitation and temperatures interact with field activities during summer holidays. A second June peak may be related to Easter holidays. The main risk factor appears to be wild watercress ingestion (214 during recreational, weekend outings or holiday activities, explaining numerous family outbreaks involving 63 people and infection far away from their homes. Diagnosis mainly relied on egg finding (288, followed by serology (82, intradermal reaction (63, surgery (43, and erratic fluke observation (6. The number of fascioliasis-hydatidosis co-infected patients (14 is outstanding. Emetine appears as the drug most used (186, replaced by triclabendazole in recent years (21. Surgery reports are numerous (27.0%. A long delay in diagnosis (average almost 3.5 years and high lithiasis proportion suggest that many patients are frequently overlooked and pose a question mark about fascioliasis detection in the country. High seroprevalences found in

Human fascioliasis in Argentina: retrospective overview, critical analysis and baseline for future research

Science.gov (United States)

2011-01-01

In Argentina, human fascioliasis has never been adequately analysed, although having a physiography, climate, animal prevalences and lymnaeids similar to those of countries where the disease is endemic such as Bolivia, Peru and Chile. We performed a literature search identifying 58 reports accounting for 619 cases, involving 13 provinces, their majority (97.7%) from high altitudes, in central mountainous areas and Andean valleys, concentrated in Cordoba (430 cases), Catamarca (73), San Luis (29) and Mendoza (28), the remaining provinces being rarely affected. This distribution does not fit that of animal fascioliasis. Certain aspects (higher prevalence in females in a local survey, although a trend non-significant throughout Argentina) but not others (patient's age 3-95 years, mean 37.1 years) resemble human endemics in Andean countries, although the lack of intensity studies and surveys in rural areas does not allow for an adequate evaluation. Human infection occurs mainly in January-April, when higher precipitation and temperatures interact with field activities during summer holidays. A second June peak may be related to Easter holidays. The main risk factor appears to be wild watercress ingestion (214) during recreational, weekend outings or holiday activities, explaining numerous family outbreaks involving 63 people and infection far away from their homes. Diagnosis mainly relied on egg finding (288), followed by serology (82), intradermal reaction (63), surgery (43), and erratic fluke observation (6). The number of fascioliasis-hydatidosis co-infected patients (14) is outstanding. Emetine appears as the drug most used (186), replaced by triclabendazole in recent years (21). Surgery reports are numerous (27.0%). A long delay in diagnosis (average almost 3.5 years) and high lithiasis proportion suggest that many patients are frequently overlooked and pose a question mark about fascioliasis detection in the country. High seroprevalences found in recent random

Human fascioliasis in Argentina: retrospective overview, critical analysis and baseline for future research.

Science.gov (United States)

Mera y Sierra, Roberto; Agramunt, Veronica H; Cuervo, Pablo; Mas-Coma, Santiago

2011-06-11

In Argentina, human fascioliasis has never been adequately analysed, although having a physiography, climate, animal prevalences and lymnaeids similar to those of countries where the disease is endemic such as Bolivia, Peru and Chile. We performed a literature search identifying 58 reports accounting for 619 cases, involving 13 provinces, their majority (97.7%) from high altitudes, in central mountainous areas and Andean valleys, concentrated in Cordoba (430 cases), Catamarca (73), San Luis (29) and Mendoza (28), the remaining provinces being rarely affected. This distribution does not fit that of animal fascioliasis. Certain aspects (higher prevalence in females in a local survey, although a trend non-significant throughout Argentina) but not others (patient's age 3-95 years, mean 37.1 years) resemble human endemics in Andean countries, although the lack of intensity studies and surveys in rural areas does not allow for an adequate evaluation. Human infection occurs mainly in January-April, when higher precipitation and temperatures interact with field activities during summer holidays. A second June peak may be related to Easter holidays. The main risk factor appears to be wild watercress ingestion (214) during recreational, weekend outings or holiday activities, explaining numerous family outbreaks involving 63 people and infection far away from their homes. Diagnosis mainly relied on egg finding (288), followed by serology (82), intradermal reaction (63), surgery (43), and erratic fluke observation (6). The number of fascioliasis-hydatidosis co-infected patients (14) is outstanding. Emetine appears as the drug most used (186), replaced by triclabendazole in recent years (21). Surgery reports are numerous (27.0%). A long delay in diagnosis (average almost 3.5 years) and high lithiasis proportion suggest that many patients are frequently overlooked and pose a question mark about fascioliasis detection in the country. High seroprevalences found in recent random

Estructura, Biomasa a\\'erea y carbono almacenado en los bosques del Sur y Noroccidente de c\\'ordoba

OpenAIRE

Vásquez, Adela; Arellano, Henry

2012-01-01

We estimated the aerial biomass and stored carbon in twelve types of forests in the department of C\\'ordoba with annual rain fall ranging from 3000 mm (super humid climates) to 1300 mm (semi-humid climate). Biomass was estimated based on structural aspects of the vegetation (diameter at breast height, total height, and wood specific weight). We tested nine allometric equations for tropical forests available in the literature and selected those proposed by Chave et al (2005) that are specific ...

127 Impact des rejets urbains et industriels sur la qualité des eaux ...

African Journals Online (AJOL)

PR BOKO

scour of surfaces and underground. Keywords :aquifer, hydrochimy, rejections, pollution, El Kantara, Biskra, Algeria. 1. Introduction. La qualité des ..... A case study: Suquıa River Basin Au vue des résultats d'analyses hydrochimique, les concentrations en sulfates dépassent la norme (200-400mg/L). (Cordoba-. Argentina).

Tratamiento de disoluciones que contienen cromo hexavalente mediante electrocoagulación con ánodos de hierro

OpenAIRE

ARROYO NÚÑEZ, MARÍA GUADALUPE

2011-01-01

Los residuos de cromo hexavalente y sus compuestos se originan en industrias tales como la fabricación de coches, el refino del petróleo, el tratamiento de superficies, la preparación de cromato, las industrias de fertilizantes y las industrias que emplean componentes de Cr(VI) como inhibidores de la corrosión. Los compuestos derivados del Cr(VI) son muy contaminantes, tienen un efecto altamente oxidante y facilidad para penetrar en membranas biológicas, además de ser cancerígenos para los...

Anormalidades Cromosómicas en la Microsporogénesis de Aloe Vera (L.) Burm. F. (Aloaceae)

OpenAIRE

IMERY BUIZA, José; CEQUEA RUÍZ, Hernán

2002-01-01

El objetivo del presente trabajo es verificar la existencia de anormalidades cromosómicas asociadas a la baja fertilidad del polen en Aloe vera. El estudio se realizó a partir del aplastamiento de anteras inmaduras fijadas en etanol-acético y coloreadas con orceína. La viabilidad del polen se determinó en microcultivos de agar y sacarosa. Las anormalidades más frecuentes en meiosis I fueron: quiasmas persistentes entre homólogos grandes y desplazamiento precoz de cromosomas pequeños, uno o má...

The satellite-based remote sensing of particulate matter (PM) in support to urban air quality: PM variability and hot spots within the Cordoba city (Argentina) as revealed by the high-resolution MAIAC-algorithm retrievals applied to a ten-years dataset (2

Science.gov (United States)

Della Ceca, Lara Sofia; Carreras, Hebe A.; Lyapustin, Alexei I.; Barnaba, Francesca

2016-04-01

Particulate matter (PM) is one of the major harmful pollutants to public health and the environment [1]. In developed countries, specific air-quality legislation establishes limit values for PM metrics (e.g., PM10, PM2.5) to protect the citizens health (e.g., European Commission Directive 2008/50, US Clean Air Act). Extensive PM measuring networks therefore exist in these countries to comply with the legislation. In less developed countries air quality monitoring networks are still lacking and satellite-based datasets could represent a valid alternative to fill observational gaps. The main PM (or aerosol) parameter retrieved from satellite is the 'aerosol optical depth' (AOD), an optical parameter quantifying the aerosol load in the whole atmospheric column. Datasets from the MODIS sensors on board of the NASA spacecrafts TERRA and AQUA are among the longest records of AOD from space. However, although extremely useful in regional and global studies, the standard 10 km-resolution MODIS AOD product is not suitable to be employed at the urban scale. Recently, a new algorithm called Multi-Angle Implementation of Atmospheric Correction (MAIAC) was developed for MODIS, providing AOD at 1 km resolution [2]. In this work, the MAIAC AOD retrievals over the decade 2003-2013 were employed to investigate the spatiotemporal variation of atmospheric aerosols over the Argentinean city of Cordoba and its surroundings, an area where a very scarce dataset of in situ PM data is available. The MAIAC retrievals over the city were firstly validated using a 'ground truth' AOD dataset from the Cordoba sunphotometer operating within the global AERONET network [3]. This validation showed the good performances of the MAIAC algorithm in the area. The satellite MAIAC AOD dataset was therefore employed to investigate the 10-years trend as well as seasonal and monthly patterns of particulate matter in the Cordoba city. The first showed a marked increase of AOD over time, particularly evident in

Opinions of Cordoba's politicians and journalists on atomic energy; Politicos y periodistas cordobeses opinan sobre energia atomica

Energy Technology Data Exchange (ETDEWEB)

Bossa, Pedro; Fracassa, Laura [Universidad Empresarial Siglo 21, Cordoba (Argentina); com, lauryfracassa@hotmail; Martin, Hugo R [Comision Nacional de Energia Atomica, Cordoba (Argentina). Regional Centro

2006-07-01

The perception of the nuclear energy of journalist of the Cordoba city and of the member of the legislative body of the Province was investigated. In general a high degree of ignorance on nuclear energy and its uses was found. The majority of them considers nuclear energy a great danger for the society and describes it as a potential damage for health and environment. Little is known about medical applications, food irradiation, etc. As a consequence nuclear energy has no priority in journalist and lawmakers agendas. (author)

Monitoring the invasion of an exotic tree (Ligustrum lucidum) from 1983 to 2006 with Landsat TM/ETM+ satellite data and support vector machines in Cordoba, Argentina

Science.gov (United States)

Gregorio I. Gavier-Pizarro; Tobias Kuemmerle; Laura E. Hoyos; Susan I. Stewart; Cynthia D. Huebner; Nicholas S. Keuler; Volker C. Radeloff

2012-01-01

In central Argentina, the Chinese tree glossy privet (Ligustrum lucidum) is an aggressive invasive species replacing native forests, forming dense stands, and is thus a major conservation concern. Mapping the spread of biological invasions is a necessary first step toward understanding the factors determining invasion patterns. Urban areas may...

Transformaciones en la mirada empresarial

Directory of Open Access Journals (Sweden)

ANDREA MILESI

2014-08-01

Full Text Available Based on fieldwork carried out in five auto-parts companies in Cordoba (Argentina, and integrating contributions from anthropological and economic theories, this article discusses how business representations regarding the role of workers in the processes of incorporation, rejection, acceptance and generation of productive knowledge have been transformed in the past two decades.

Nuclear and atomic spectroscopy group. Dosimetry in medical physics

International Nuclear Information System (INIS)

Rubio, M.

1990-01-01

The main activities of radiation physics on the sector of atomic spectroscopy and x-ray fluorescence analysis in the Faculty of Mathematics, Astronomy and Physics (University of Cordoba, Argentina),are presented, including dosimetric studies in radiodiagnostic: dosimetric determination using Monte Carlo method; distortion effect study on PET image and lasers in medicine. (C.G.C.)

Sociocultural Variables That Impact High School Students' Perceptions of Native Fauna: A Study on the Species Component of the Biodiversity Concept

Science.gov (United States)

Bermudez, Gonzalo M.; Battistón, Luisina V.; García Capocasa, María C.; De Longhi, Ana L.

2017-01-01

This study investigates the influence of school sector (private versus state schools) and student gender on knowledge of native fauna. Our main objectives were (a) to describe the knowledge of high school students from the province of Cordoba, Argentina with respect to native animal species, (b) to determine if any exotic species (introduced or…

Verificación analítica para las determinaciones de cromo hexavalente en aguas por espectrofotometría

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Carlos Alberto Severiche Sierra

2013-06-01

Full Text Available En la actualidad la prestación de servicios analíticos de laboratorios, toma de forma ascendente más auge y utilidad. El efecto de un análisis de aguas es forjar resultados correctos y confiables, siendo la verificación de ensayos uno de los aspectos más importantes y factor clave para conseguir este propósito. La determinación de cromo hexavalente en aguas por colorimetría con la difenilcarbazida es la metodología analítica más usada y útil que se conoce en el ámbito científico técnico, principalmente, por su alta selectividad y también debatida por su reacción a las interferencias. En el presente estudio se hizo la valoración analítica del método espectrofotométrico para la determinación de cromo hexavalente en aguas; el objetivo de este trabajo fue confirmar correctamente la aplicación del método para el análisis de aguas. Se trabajaron muestras de diferentes tipos de agua: potable, residual y superficial, siguiéndose estrictamente los protocolos de verificación. Se encontraron resultados satisfactorios en precisión y exactitud con el fin de emitir resultados confiables y reales de la muestra analizada.

Differential cooling and uplift of the eastern Sierras Pampeanas (Central Argentina)

International Nuclear Information System (INIS)

Steenken, A; Martino, R.; Wemmer, K.; Siegesmund, S.; Drobe, M.; Lopez de Luchi, M.

2007-01-01

The Eastern Sierras Pampean as are constituted by the Neo proterozoic to early Cambrian basement of the Sierras de Cordoba, San Luis and eastern La Rioja (29grades 00seconds - 33grades 30seconds, 64grades 00seconds - 6 00W) outcropping in the east of the Chaco-Parana basin. High-grade metamorphic gneisses and schists dominate the basement. The intrusion of magmatic rocks took place during the Pampean, Famatinian and Achalian cycles. The basement is divided in different lithological and structural domains by N-S trending ductile shear-zones. The east-dipping compressive Los Tuneles and Guacha Corral shear-zones at the western limit of the Sierras de Cordoba are the most important with respect to the exhumation history of the Sierras. An extensive survey on the cooling history by K/Ar biotite and muscovite dating of the basement rocks of the Sierras de Cordoba and San Luis was carried out and interpreted in terms of a differential exhumation history of the different blocks. Beginning of cooling in the Sierra de San Luis is documented by large muscovite booklets from pegmatites yielding ages between 438 Ma and 448 Ma. Slow cooling rates (3grades/Ma) led to a systematic reset of the K/Ar ages in the fine-grained muscovites forming two groups between 430 Ma and 410 Ma and 410 Ma and 380 Ma resulting from the Achalian deformation in the upper Silurian-Upper Devonian. In contrast to the Upper Ordovician/-Llandoverian cooling onset in the Sierra de San Luis, large pegmatitic muscovites from the Sierras de Cordoba record late Cambrian to Early Ordovician ages between 493 Ma and 474 Ma. The limit between those age domains is marked by the Los Tuneles and Guacha Corral shear-zones accommodating the vertical displacement responsible for the different ages. Cooling ages from the shear-zone rocks at 430 Ma define the upper limit for the contraction that is related to the collision with the Cuyania Terrane to the western outboard of Gondwana

Hourly distributions of the diffuse fraction of global solar irradiation in Cordoba (Spain)

International Nuclear Information System (INIS)

Posadillo, R.; Lopez Luque, R.

2009-01-01

Hourly global irradiations on tilted planes are required for dimensioning PV systems. However, for most sites, only global irradiations on a horizontal plane are available, and, given that to calculate the global irradiation on inclined planes the first step is to determine the diffuse component and this is not collected, we have studied the behaviour of the diffuse component on an hourly basis. Most parametrization models for the derivation of hourly diffuse irradiance from hourly global irradiance involve the clearness index, a parameter that implicitly includes solar altitude. The present paper has focused on the possibility of also including 'mean solar altitude α-bar' explicitly as a parameter in addition to the clearness index. Several analytical models are proposed, validated and compared here, using solar data collected on our station located in Cordoba (Spain)

Caracterización de la región cromosómica 15q11-q13 del genoma humano. Variabilidad genómica en el autismo e identificación de ncRNAs

OpenAIRE

Cerrato Rivera, Celia

2007-01-01

La tesis doctoral con título "Caracterización de la región cromosómica 15q11-13 del genoma humano. Variabilidad genómica en el autismo e identificación de ncRNAs" se basa en el estudio de la región cromosómica 15q11-q13, centrándonos en los aspectos de la variabilidad genómica y su significado funcional. En la primera parte del estudio buscamos reordenamientos de 15q11-q13 en pacientes con autismo, mediante la genotipación de marcadores microsatélites cubriendo dicha región, y definimos una d...

Alteraciones cromosómicas en Leucemias linfoides agudas; un estudio de nueve años en 632 pacientes: implicaciones en el diagnóstico, pronóstico, tratamiento y seguimiento de la enfermedad

Directory of Open Access Journals (Sweden)

G. Guevara

2001-07-01

Full Text Available Las leucemias linfoides agudas son las neoplasias más comunes en niños, produciendo todavía alta mortalidad en nuestro medio. En estos tumores se han descrito una amplia variedad de alteraciones cromosómicas que se asocian con el pronóstico, diagnóstico morfológico y que sirven de marcadores para escoger la terapia y seguir la enfermedad. En esta investigación se quizo analizar el tipo y frecuencia de las aberraciones cromosómicas en una población colombiana de niños y adultos con diagnóstico de LLA.

Assessment of heavy metal accumulation in two species of Tillandsia in relation to atmospheric emission sources in Argentina

International Nuclear Information System (INIS)

Wannaz, Eduardo D.; Carreras, Hebe A.; Perez, Carlos A.; Pignata, Maria L.

2006-01-01

The ability of Tillandsia capillaris Ruiz and Pav. f. capillaris and Tillandsia permutata A. Cast. to accumulate heavy metals was evaluated in relation to potential atmospheric emission sources in Argentina. The sampling areas (n = 38) were chosen in the province of Cordoba, located in the center of Argentina, and categorized according to land use, anthropogenic activities and/or distance to potential heavy metal emission sources. In each sampling site, pools of 40-50 individuals of each species were made from plants collected along the four cardinal directions. The concentrations of V, Mn, Fe, Co, Ni, Cu, Zn, Pb and Br of these samples were measured by Total Reflection X-Ray Fluorescence (TXRF) analysis with Synchrotron Radiation. Each species was submitted to a cluster analysis in order to discriminate different groups of heavy metals as tracers of natural or anthropogenic sources. A Contamination Factor (CF) was calculated using the concentrations of the elements in each sample compared to their concentrations in the control samples. Finally, the rank coefficients of correlation between the CFs and the categorical variables characteristic of each site (land use and anthropogenic load) were analyzed. A positive correlation was found for T. capillaris between the CFs of V, Mn, Co, Ni, Cu and Zn and the urban-industrial category, whereas the CF values for Zn and Pb were positively correlated with the road category. In T. permutata there was a positive correlation between the CF of Zn and the urban-industrial category and the CF of Pb with the road category. We therefore conclude that T. capillaris is a more efficient metal accumulator in passive biomonitoring studies

Assessment of heavy metal accumulation in two species of Tillandsia in relation to atmospheric emission sources in Argentina

Energy Technology Data Exchange (ETDEWEB)

Wannaz, Eduardo D. [Departamento de Quimica, Instituto Multidisciplinario de Biologia Vegetal - IMBIV/CONICET-UNC, Facultad de Ciencias Exactas, Fisicas y Naturales, Universidad Nacional de Cordoba, Av. Velez Sarsfield 1611, Ciudad Universitaria (X5016GCA) Cordoba (Argentina); Carreras, Hebe A. [Departamento de Quimica, Instituto Multidisciplinario de Biologia Vegetal - IMBIV/CONICET-UNC, Facultad de Ciencias Exactas, Fisicas y Naturales, Universidad Nacional de Cordoba, Av. Velez Sarsfield 1611, Ciudad Universitaria (X5016GCA) Cordoba (Argentina); Perez, Carlos A. [Laboratorio Nacional de Luz Sincrotron - LNLS/CNPq, Caixa Postal 6192, 13038-970 Campinas (Brazil); Pignata, Maria L. [Departamento de Quimica, Instituto Multidisciplinario de Biologia Vegetal - IMBIV/CONICET-UNC, Facultad de Ciencias Exactas, Fisicas y Naturales, Universidad Nacional de Cordoba, Av. Velez Sarsfield 1611, Ciudad Universitaria (X5016GCA) Cordoba (Argentina)]. E-mail: pignata@com.uncor.edu

2006-05-15

The ability of Tillandsia capillaris Ruiz and Pav. f. capillaris and Tillandsia permutata A. Cast. to accumulate heavy metals was evaluated in relation to potential atmospheric emission sources in Argentina. The sampling areas (n = 38) were chosen in the province of Cordoba, located in the center of Argentina, and categorized according to land use, anthropogenic activities and/or distance to potential heavy metal emission sources. In each sampling site, pools of 40-50 individuals of each species were made from plants collected along the four cardinal directions. The concentrations of V, Mn, Fe, Co, Ni, Cu, Zn, Pb and Br of these samples were measured by Total Reflection X-Ray Fluorescence (TXRF) analysis with Synchrotron Radiation. Each species was submitted to a cluster analysis in order to discriminate different groups of heavy metals as tracers of natural or anthropogenic sources. A Contamination Factor (CF) was calculated using the concentrations of the elements in each sample compared to their concentrations in the control samples. Finally, the rank coefficients of correlation between the CFs and the categorical variables characteristic of each site (land use and anthropogenic load) were analyzed. A positive correlation was found for T. capillaris between the CFs of V, Mn, Co, Ni, Cu and Zn and the urban-industrial category, whereas the CF values for Zn and Pb were positively correlated with the road category. In T. permutata there was a positive correlation between the CF of Zn and the urban-industrial category and the CF of Pb with the road category. We therefore conclude that T. capillaris is a more efficient metal accumulator in passive biomonitoring studies.

Mortalidad por causas externas en tres ciudades latinoamericanas: Córdoba (Argentina, Campinas (Brasil y Medellín (Colombia, 1980-2005 Mortalidade por causas externas em três cidades latino-americanas: Córdoba (Argentina, Campinas (Brasil e Medellín (Colômbia, 1980-2005 Mortality from external causes in three Latin American cities: Córdoba (Argentina, Campinas (Brazil and Medellín (Colombia, 1980-2005

Directory of Open Access Journals (Sweden)

Doris Cardona

2008-12-01

descriptive study from secondary sources is presented, using vital statistics from Cordoba (Argentina, Campinas (Brazil and Medellin (Colombia during three different periods between 1980 and 2005. The following subgroups of external causes are studied: homicides by firearms and other weapons, traffic accidents, and suicides and deaths with unspecified intentions. The data was disaggregated by age and sex, with rates calculated for the medians of the next three census years. RESULTS: The levels for Medellin are significantly higher than those seen in Campinas and Cordoba for all external causes studied. Young men constitute the group with the highest mortality. The levels in Campinas are twice those seen in Cordoba, especially in homicides and traffic accidents, but the suicide rates of Cordoba are double those in Campinas. For Medellin the rates were highest around 1990, unlike the two other cities where the trend grew between 1980 and 2000 and declined between 2001 and 2005. CONCLUSIONS: The availability of quality data on mortality allows comparisons among the populations studied. When comparing mortality from external causes, considerable differences in the levels and trends can be seen, but there are fewer differences observed on the data for age and sex. These data were collected from cities with similarities, as they are all three important university centers with industrial development that has been important for their countries. The results suggest that socioeconomic and demographic factors are insufficient to explain the great differences in the data reported.

Cultural heritage as a factor of tourism development: a case study in the city of Cordoba

Directory of Open Access Journals (Sweden)

Francisco González Santa Cruz

2018-01-01

Full Text Available Intangible cultural heritage shapes the history of peoples. The present paper attempts to explore the concept of this type of heritage by focusing on the festivities of the Patios of Cordoba (Spain, declared by the United Nations Educational, Scientific and Cultural Organization (UNESCO as an Intangible Culture Heritage in 2012. The aim of this paper is to present the main results of an investigation conducted on tourists participating in the Festival of the Patios in 2014, disaggregated by gender. The research shows that most of the tourists were university educated, with an average age above 50 years and an average income level.

Hourly distributions of the diffuse fraction of global solar irradiation in Cordoba (Spain)

Energy Technology Data Exchange (ETDEWEB)

Posadillo, R.; Lopez Luque, R. [Grupo de Investigacion de Fisica para las Energias y Recursos Renovables, Dpto. de Fisica Aplicada/UCO, Edificio C2 Campus de Rabanales, 14071 Cordoba (Spain)

2009-02-15

Hourly global irradiations on tilted planes are required for dimensioning PV systems. However, for most sites, only global irradiations on a horizontal plane are available, and, given that to calculate the global irradiation on inclined planes the first step is to determine the diffuse component and this is not collected, we have studied the behaviour of the diffuse component on an hourly basis. Most parametrization models for the derivation of hourly diffuse irradiance from hourly global irradiance involve the clearness index, a parameter that implicitly includes solar altitude. The present paper has focused on the possibility of also including ''mean solar altitude anti {alpha}'' explicitly as a parameter in addition to the clearness index. Several analytical models are proposed, validated and compared here, using solar data collected on our station located in Cordoba (Spain). (author)

PHOTOGRAMMETRIC AND LIDAR DOCUMENTATION OF THE ROYAL CHAPEL (CATHEDRAL-MOSQUE OF CORDOBA, SPAIN

Directory of Open Access Journals (Sweden)

J. Cardenal

2012-07-01

Full Text Available At present, cultural heritage documentation projects use a variety of spatial data acquisition techniques such as conventional surveying, photogrammetry and terrestrial laser scanning. This paper deals with a full documentation project based on all those techniques in the Royal Chapel located in the Cathedral-Mosque of Cordoba in Spain, declared World Heritage Site by UNESCO. At present, the Royal Chapel is under study for a detailed diagnostic analysis in order to evaluate the actual state of the chapel, pathologies, construction phases, previous restoration works, material analysis, etc. So in order to assist the evaluation, a documentation project with photogrammetric and laser scanner techniques (TLS has been carried out. With this purpose, accurate cartographic and 3D products, by means of the integration of both image and laser based techniques, were needed to register all data collected during the diagnostic analysis.

Técnicas emergentes en medicina reproductiva: diagnóstico cromosómico del primer corpúsculo polar del ovocito

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Dr. A. Crosby Javier, Ph.D.

2010-05-01

Las indicaciones más comunes para este tratamiento son: 1 evitar el aborto en pacientes con aborto recurrente sin explicación anatómica ni clínica; 2 mejorar las tasas de implantación en mujeres mayores de 37 años con antecedentes de procedimientos anteriores en los que se transfirieron embriones de buena calidad; 3 evitar el nacimiento de niños con enfermedades de origen cromosómico en mujeres mayores de 39 años.

Daily fluctuations in radon concentration in a Cordoba factory complex

International Nuclear Information System (INIS)

Germanier, A.; Perez, R.; Rubio, M.

1998-01-01

Full text: This work shows the fluctuations of indoor radon concentration in some rooms placed inside a Cordoba Factory Complex. The measurements were performed by Victoreen Radon Monitor. The system was shaped to sample single radon concentration values after one hour integration. It utilizes a passive diffusion chamber and a silicon diffused junction detector. A portion of decay products will plate-out onto the detector and emit alpha particles into the depletion region of a diffused junction detector. The alpha energy is deposited in the detector in the form of ionization which generates a charge pulse. Only alpha pulses of an energy level similar Po-218 and Po-214 are detected. The study of the meteorological parameters shows that the daily fluctuations of the radon concentration respond to the transport and dispersion processes of radon gas through the air. Air temperature, wind's direction and speed are found to be fundamentals parameters in the observed time behavior. The meteorological data were obtained by a portable station (Davis Weathe Monitor II). The radon concentration present a maximum value (1850 Bq/m 3 ) at the night and a minimum value (150 Bq/m 3 ) at the day. (author) [es

Reducción de percloroetileno y cromo hexavalente mediante FE(0) y bioestimulación de microorganismos anaerobios

OpenAIRE

VÁZQUEZ MORILLAS, Alethia; VACA MIER, Mabel; BELTRÁN VILLAVICENCIO, Margarita; LÓPEZ CALLEJAS, Raymundo; ÁLVAREZ, Pedro J

2007-01-01

En este trabajo se estudiaron las interacciones Fe-microorganismos simulando el entorno de una barrera reactiva permeable (BRP), para la reducción de percloroetileno (PCE) y cromo hexavalente en acuíferos contaminados. La bioestimulación de los microorganismos se llevó a cabo mediante la adición de un cosustrato para el desarrollo de las comunidades microbianas presentes de manera natural en el suelo. Se empleó un compuesto comercial que libera hidrógeno (HRC, por sus siglas en inglés) a tasa...

Chromium in surface water and groundwater in the surrounding area of a tannery: relationships with water quality baseline, Elena, Cordoba. Argentina; Cromo en aguas subterraneas y superficiales en el entorno de una curtiembre, relacion con valores de fondo natural. Elena, Cordoba. Argentina

Energy Technology Data Exchange (ETDEWEB)

Matteoda, E.; Blarasin, M.; Damilano, G.; Cabrera, A.; Giuliano Albo, J.

2009-07-01

The basin of the El Barreal stream is a dominantly rural area in which groundwater is used for all activities whereas the stream is used as sink of residues and effluents. The existence of a tannery, which discharge the effluents into a wetland (which is drained by the stream), reveals the need to study the presence of Chromium in surface and groundwater and to compare values derived from pollution with those corresponding to the natural water baseline values. Fifty three samples of surface and groundwater were abstracted and chemical analyses were made, including total Chromium in water and plants. The chemical analysis results were studied by means of conventional and statistical techniques. The local and regional geological characteristics allow us to interpret that Chromium in water is derived from source minerals, being possible to stand out that high values probably are related to nearby serpentinite bodies.The values of total chrome in surface and groundwater are included in the natural quality baseline range calculated for this basin (0,25-5ug/L), exempting those samples with higher values linked to sites with farming activities and to the wetland environment where the Chromium effluent is discharged. In the last place, Chromium was retained in soil and plants whereas the aquifer was affected by a contaminant plume of total dissolved solids because of advective-dispersive transport. In the 2009 monitoring survey, a small increase of Chromium in groundwater was detected in relation to that of 2005, being assumed that partial desorption of Chromium is taking place from the solid phase. (Author) 19 refs.

Clorities as geothermometer. La Bragada mine. Cordoba, Argentina

International Nuclear Information System (INIS)

Gonzalez, M.; Mas, G.

1998-01-01

Clorities have been proposed as geothermometer in geothermal and hydrothermal environments environments because they show a rather wide range of variation in their structural and chemical characteristics, regarded with the temperature of formation. Taking into account that this group of minerals constitute one of the main products of the hydrothermal alteration of the host rocks at the mesothermal gold deposit La Bragada. The optical and XRD study of these minerals have been performed in order to used them as geothermometer . The relation of this geothermometer with fluid inclusions thermometry in the same deposit has been analyzed in order to assess their use as a quick and simple mean for the thermometric characterization of an alteration zone. (author)

Exploration for uranium in Argentina: New policies of reactivation

International Nuclear Information System (INIS)

Bianchi, R.E.

2009-01-01

Full text: The policy established by the National Government of Argentina in August 2006 related to resuming the Nuclear activity in the country, lead the CNEA trough the Exploration of Raw Materials Manager (ERMM) to establish working strategies for the next 10 years. These strategies together with the assignment of an adequate budget will contribute to define new uranium resources, which together with the already known ones, will be used to supply the requirements of Nuclear Power and Research Plants in the future. Thus, the ERMM is applying a policy of human resources hiring new personnel in order to count with the minimum necessary workforce to reach these tasks. In Argentina known U resources are related to sedimentary, igneous and metamorphic environments. Considering the geology of the different regions, Argentina has been divided into 57 units in which the geological, geochemical, mineralogical and structural information is evaluated in order to estimate the uranium geological favorability of each unit. The final pursuit of this regional study is to circumscribe new areas with anomalous uranium contents in which prospection and exploration should be carried out. These studies together with prospection and exploration works are performed in the country by four exploration centers based in Salta (RN), Cordoba (R.Ce), Mendoza (R.Cu) and Trelew (RP). The works planned for each exploration center includes: Regional Noroeste, Mina Franca Deposit: peri-granitic vein- type mineralization: 25% of surface exploration has been performed. Mineralized areas: Istataco and San Buenaventura correspond to an igneous-metamorphic environment, Sierra de Vaqueria to a sedimentary one: Prospection stage. Regional Centro, Mineralized areas: El Gallo: drilling stage and Donato: prospection stage, correspond to an igneous-metamorphic environment with intra and peri-granitic anomalies. Noya: prospection stage, sedimentary environment. Regional Cuyo, Mineralized area: Western Sierra

Uranium deposit types and resources of Argentina

International Nuclear Information System (INIS)

Lopez, L.; Cuney, M.

2014-01-01

The uranium-related activities in Argentina begun in the 1950s and, as a result of the systematic exploration, several types of deposits have been discovered since then: volcanic and caldera-related, sandstone-hosted, vein spatially related to granite (intragranitic and perigranitic) and surficial. The deposits that have been the focus of the most important uranium exploitations are the ones that belong to the volcaniclastic type. These are localized in Permian formations associated with synsedimentary acid volcanism in the Sierra Pintada district (Mendoza province). The volcanic and caldera related type is also present in the Laguna Colorada deposit (Chubut province) located in the San Jorge basin (Cretaceous). Several important uranium mineralisations have been identified in Cretaceous fluvial sandstones and conglomerates, among which the most relevant is the Cerro Solo deposit (Chubut province) that corresponds to the paleochannel structure subtype. Other subtypes of sandstone model have been studied. For instance, the Don Otto deposit (Salta province), located in the Salta Group Basin (Cretaceous - Tertiary), belongs to the tabular U-V subtype. The roll front subtype can be also found in the Los Mogotes Colorados deposit (La Rioja province) which is hosted by Carboniferous continental sandstones. The uranium mineralisations in veins and disseminated episyenites within peraluminous leucogranites of the Sierras Pampeanas (Cordoba and San Luis provinces) represent other types of existing deposits. These granites are Devonian – Carboniferous and the related deposits are comparable to those from the Middle European Variscan. There are also other vein-type uranium deposits located in metamorphic basement in the periphery of high potassium calcalkaline granites (Sierras Pampeanas of Catamarca and La Rioja provinces), where the mineralisation control is mainly structural. The current uranium identified resources of the country are approximately 24,000 tU in the

Evaluación genotóxica del extracto oleoso de la semilla de Carapa guianensis Aublet en el ensayo de aberraciones cromosómicas en ratones Balb/c

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Daniel Francisco Arencibia Arrebola

Full Text Available Introducción: el extracto oleoso de la semilla de Carapa guianensis Aublet ha tenido diversos usos biomédicos. Recientemente fue evaluado este extracto, el cual manifestó grandes potencialidades como antioxidante en ensayos in vivo; pero poco se conoce de su efecto sobre el ADN en biomodelos experimentales. Objetivo: evaluar el potencial genotóxico del extracto oleoso de la semilla de Carapa guianensis en el ensayo de aberraciones cromosómicas de células de la médula ósea de ratones Balb/c. Métodos: se formaron cinco grupos experimentales: un grupo placebo (Tween 65 al 2 %, tres tratados con niveles de dosis del extracto (400, 1 000 y 2 000 mg/kg, administrados por vía oral durante 14 días; por último, un grupo control positivo tratado con ciclofosfamida, en dosis de 50 mg/kg por vía intraperitoneal 48 y 24 h antes de la eutanasia. Se administraron cinco animales/sexo/grupo. Después de los 14 días de administración se les efectuó la eutanasia por dislocación cervical y se les extrajo la médula ósea del fémur para proceder a realizar la técnica citogenética de aberraciones cromosómicas. Resultados: los resultados entre controles y tratados con el extracto no difirieron para los dos sexos en las variables índice mitótico, Gaps, células con poliploidías, número de células con aberraciones cromosómicas y cromatídicas y el porcentaje de células con aberraciones. Sin embargo, sí difirieron controles y tratados contra el grupo tratado con ciclofosfamida, lo que valida nuestros resultados. Conclusiones: el extracto oleoso de la semilla de la Carapa guianensis no posee potencialidades genotóxicas en la formación de aberraciones cromosómicas, sobre todo estructurales en células de la médula ósea de ratones Balb/c de ambos sexos.

Geochemistry of the uranium mineralized Achala granitic complex, Argentina: Comparison with Hercynian peraluminous leucogranites of western Europe

International Nuclear Information System (INIS)

Cuney, M.; Leroy, J.; Valdiviezo, P.A.; Daziano, C.; Gamba, M.; Zarco, A.J.; Morello, O.; Ninci, C.; Molina, P.

1989-01-01

The Achala granitic complex belongs to the Sierras Pampeanas Hercynian belt, located west of the city of Cordoba, Argentina. This complex is very large (about 100 km N-S and 40 km E-W) and is composed of biotite, biotite with muscovite and muscovite with tourmaline granites intruded in amphibolite grade metamorphic rocks, along a main N 20 deg. E structural direction. Numerous uranium mineralizations are located within the granitic massif and tungsten mineralizations are present both in the enclosing metamorphic rocks and in the granite. The geochemistry of the granite has been studied in four test areas (Southern, Copina, Median and Don Vincente). Two test areas (Median and Don Vicente) present clear evidence of hydrothermal alteration: albitization and dequartzification similar to the French 'episyenites', silicification and argillic alteration. Potassic alteration is rare and weakly developed. The two test areas with hydrothermal alteration present a high uranium geochemical background (5-30 ppm). High thorium contents (up to 65 ppm) are essentially observed in the less differentiated granites of the Copina and Median areas. Thorium/uranium ratios are highly variable (1-10). Uranium minerals are related to different environments - (1) apatite-biotite enclave mineralized with uraninite and uranothorite, (2) gneiss from the contact metamorphism rim, (3) granite with incipient dequartzification, (4) granite associated with albitic episyenites and (5) silicified granite - but are all located in the two test areas presenting clear evidence of hydrothermal alteration. The three petrogenetic events are clearly related to very different mechanisms, separated from each other by several tens of millions of years in the west European Hercynian chain. In the same period the same succession of events leading to uranium deposits is observed in Argentina. 34 refs, 10 figs, 1 tab

Coal exploration in the Alto San Jorge area, Cordoba Department. Exploracion de carbones en el Ato San Jorge, Departamento de Cordoba

Energy Technology Data Exchange (ETDEWEB)

Ospina, L H; Oquendo, G G [Geominas Ltda, Medellin (Colombia)

1989-01-01

A Mining Feasibility Study in the Area of Alto San Jorge, Department of Cordoba, Colombia, was commissioned by CARBOCOL S.A. to the Consortium Geominas-NACI. An area of 800 Ka2 was explored to define surface mining possibilities within two subareas referred to as Alto San Jorge and San Pedro Ure. Rocks of Cretaceous, Tertiary and Quaternary age crop out in the zone. In the subarea Alto San Jorge the principal structure is a syncline with a south-north direction. The San Pedro Ure subarea is formed by undulations with flanks of low dip, the most important being the San Antonio Syncline because it contains the mining block. The geological study of the surface demonstrated the existence of coal in the Oligocene Cienaga de Oro Formation and the Niocene Cerrito Formation, with potential resources of 6.3 billion tons. The subsequent exploration of the subsoil, with 20.618 m of drilling, permitted determination of demonstrated reserves in the order of 2.9 billion tons within two areas. In the sector selected for the mine plan, in the area of San Pedro-Puerto Libertador, 7.791 m of drilling was accomplished to define a demonstrated reserve of 515 million tons of coal down to a depth of 200. The combustible type coal has 5.000 cal/g. Complete mining schedules were developed at the prefeasibility level for two surface mines with productions of 1.5 MMTY and 4 MMTY. 9 figs., 3 tabs., 28 refs.

Relación microestructura resistencia al desgaste de recubrimientos duros ricos en cromo y tungsteno aplicados por soldadura electrica (SMAW

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Lisys Margarita León Sevilla

2004-01-01

Full Text Available Se comparó la microestructura y resistencia a la abrasión de recubrimientos duros depositados por soldadura sobre placas de acero estructural ASTM A36. Se utilizaron cinco electrodos comerciales, dos de bajo cromo, dos de alto cromo aplicados en una y dos capas y uno rico en tungsteno depositado en una capa La resistencia al desgaste fue evaluada en una máquina de rueda de caucho y arena seca construida según la norma ASTM G65-80. Como material abrasivo se utilizaron partículas de sílice con índice de finura AFS 50- 70. La caracterización de las microestructuras se realizó utilizando microscopía óptica y electrónica de barrido. Los resultados mostraron que el parámetro de resistencia a la abrasión no está directamente relacionado con dureza del material pero sí con el tipo, tamaño, forma, composición química y distribución de los carburos presentes en la matriz del recubrimiento. La mejor resistencia a la abrasión se obtuvo en depósitos con microestructura compuesta por carburos primarios (del tipo M7C3 en recubrimientos ricos en Cr o del tipo MC, M6C en recubrimientos ricos en W en una matriz eutéctica.

DESARROLLO Y VALIDACIÓN DE UN MÉTODO ESPECTROFOTOMÉTRICO/COLORIMÉTRICO PARA LA DETERMINACIÓN DE CROMO (III EN LICORES RESIDUALES DE PIQUELADO-CURTIDO

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Ramiro Escalera Vásquez

2007-01-01

Full Text Available Dos métodos no destructivos fueron desarrollados y validados para la determinación de concentraciones de sales de cromo en licores residuales de curtido que se producen en la fabricación de cueros: Un método espectrofotométrico y un método colorimétrico derivado. Los dos métodos se basan en el análisis de espectros de absorbancia-longitud de onda generados por soluciones patrón que fueron preparadas con los mismos reactivos químicos comerciales utilizados por una curtiembre local, en el intervalo de longitud de onda de 190-800 nm (UV-visible. Ambos métodos satisfacen los criterios fundamentales de validación: proporcionalidad (buena linealidad y buena sensibilidad dentro del intervalo de concentraciones de sales de cromo que se observa en los licores residuales de curtido; precisión (buena repetibilidad/reproducibilidad; exactitud (sin diferencias estadísticas respecto a métodos oficiales y selectividad (buena especificidad para la sal de cromo. Estos métodos son prácticos por su simplicidad, bajo costo y rapidez. Requieren equipos de bajo costo (un espectrofotómetro de rango visible o un colorímetro fabricado manualmente, usan los mismos reactivos químicos que se aplican en procesos de curtido corriente y no requieren de condiciones de seguridad especiales ni personal especializado. Los métodos pueden ser utilizados para el control de reciclado directo de licores de curtido-piquelado, facilitando de esta manera la adopción de esta técnica de Producción Más Limpia por parte de los fabricantes de cueros, especialmente curtiembres de escala pequeña y mediana.

Oral Health Promotion Intervention In Rural Contexts: Impact assessment. Córdoba, Argentina.

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Lila Cornejo

2014-03-01

Full Text Available Introduction: The study was carried out in Cruz del Eje Department, Cordoba Province, Argentina. It was based on diagnosis of conceptions of health, concentration of fluoride in drinking water and accessibility to dental coverage in 71 rural schools. Additionally, parents and teachers’ conceptions of general and oral health, dental clinical status and sialochemistry of students from eight schools were considered. Objective: To evaluate a community intervention strategy for promoting oral health in rural contexts. Through the participation of the teacher as a mediator of healthy pattern, this strategy was developed. Methods: In order to elaborate oral health promoting strategies, educational workshops, epistolary communication and on site tutorials meetings were implemented. Specific health projects to be added to the Educational Institutional Programs, as a contextualized mediating strategy for promoting oral health were designed by teachers. The strategy was evaluated comparing dental caries increase (CI detected the previous year and the one following the implementation of the educational plans. Mac Nemar's test was applied, and p<0.05 was set to indicate statistical differences between both periods. Results: A 30.43% CI (p<0.0001 was observed the year before implementing the educational programs as well as a CI reduction to 17.39% (p=0.0002 a year after their application. Conclusion: The drop off in 57.14% of the CI in rural areas, confirms the intervention strategy of designed for this particular context.Keywords: community intervention, oral health promotion, rural communities.

Effective collective dose imparted by a medicine nuclear service to Cordoba and Jaen populations

International Nuclear Information System (INIS)

Arias, M.C.; Galvez, M.; Torres, M.

1997-01-01

The application of diagnostic techniques in nuclear medicine is ever growing as part of clinical daily routine. Although the diagnostic procedures carry a negligible clinical risk, the introduction of radioactive substances into the patient makes it imperative to determine the effective dose to minimize the stochastic effects to the patient thus establishing the collective dose to the community. The aim of our work is to study the collective effective dose imparted by Nuclear Medicine Service during 1997 to Cordoba and Jaen inhabitants (1 448 988). The nuclear medicine techniques of bone exploration with 11 454 mSv-person (4,6 mSv/exploration) and thyroid scintigraphy with 6181 mSv-person (7,0 mSv /exploration) are the main techniques implicated in the relative contribution to the total annual effective collective dose of 35 901.2 mSv-person

Incidence of social resistance in provincial mining legislation. The cases of Córdoba and Catamarca (2003-2008

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Lucas Christel

2013-11-01

Full Text Available During the last decade in Argentina, the growth of open pit mining has faced strong social resistance and provincial laws prohibiting such activity. This work aims to analyse the ways in which the different subnational political regimes and economic systems impact upon the possibility of incidence of social resistance on provincial mining legislation, looking at the cases of Cordoba and Catamarca.

Daily fluctuations in radon concentration in a Cordoba factory complex; Fluctuaciones diurnas de la concentracion de {sup 222}Rn en el complejo fabril Cordoba

Energy Technology Data Exchange (ETDEWEB)

Germanier, A; Perez, R; Rubio, M [CEPROCOR, Cordoba (Argentina)

1998-07-01

Full text: This work shows the fluctuations of indoor radon concentration in some rooms placed inside a Cordoba Factory Complex. The measurements were performed by Victoreen Radon Monitor. The system was shaped to sample single radon concentration values after one hour integration. It utilizes a passive diffusion chamber and a silicon diffused junction detector. A portion of decay products will plate-out onto the detector and emit alpha particles into the depletion region of a diffused junction detector. The alpha energy is deposited in the detector in the form of ionization which generates a charge pulse. Only alpha pulses of an energy level similar Po-218 and Po-214 are detected. The study of the meteorological parameters shows that the daily fluctuations of the radon concentration respond to the transport and dispersion processes of radon gas through the air. Air temperature, wind's direction and speed are found to be fundamentals parameters in the observed time behavior. The meteorological data were obtained by a portable station (Davis Weathe Monitor II). The radon concentration present a maximum value (1850 Bq/m{sup 3}) at the night and a minimum value (150 Bq/m{sup 3}) at the day. (author)S. [Spanish] Texto completo: En este trabajo se estudian las fluctuaciones de la concentracion de radon 222 en aire 'indoor' en distintas habitaciones ubicadas dentro y fuera del predio del Complejo Fabril Cordoba (C.F.C.). Las determinaciones se realizaron con un detector pasivo Radon Monitor 05-418, marca Victoreen. El mismo consta de una camara de difusion electrostatica y de un detector de estado solido (Si) de juntura difundida. Este instrumento se configuro para obtener integraciones para cada una de las horas del dia. El principio de funcionamiento del detector se basa en el conteo de los decaimientos {alpha} del polonio 218 y polonio 214 atrapados dentro de la camara de difusion electrostatica. El build-up ocurrido dentro de esta camara es tenido en cuenta para

Determinación del contenido de compuestos de cromo en el cemento portland por espectrofotometría de absorción atómica. Primera parte

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Gaspar-Tebar, Demetrio

1976-09-01

Full Text Available Not availableEn el presente trabajo se da cuenta de un procedimiento para determinar el contenido de compuestos de cromo en el cemento portland por absorción atómica, bien por el método directo o por el de las adiciones patrones. La fusión se realiza con LiBO2 y la eliminación de interferencias por adición de La (III (1%. Para el desarrollo del trabajo ha sido necesario averiguar dicho contenido por espectrofotocolorimetría del complejo formado por reacción del cromo presente en los cementos, una vez pasado a Cr (VI, con la s-difenilcarbacida. Por otra parte se ha estudiado una variación del método propuesto sustituyendo la fusión alcalina con Na2 C03, o con la mezcla Na2CO3-K2CO3, por la fusión con LiBO2 que proporciona resultados menos dispersos y una desviación estándar estimada, una precisión y un coeficiente de variación menores. Si bien la sensibilidad del método colorimétrico es mayor que la del método propuesto de absorción atómica, éste último es más rápido, con una precisión del mismo orden y, además, permite analizar cuantitativamente los compuestos de cromo siguiendo la marcha que normalmente se utiliza para los demás constituyentes del cemento por absorción atómica. Se hace un estudio estadístico, calculando la desviación estándar estimada, la precisión y el coeficiente de variación de los resultados obtenidos en diversos cementos y clínkeres de cemento portland españoles.

Frecuencia de aberraciones cromosómicas en sujetos con gonosomopatías: Experiencia en 19 años de trabajo Frequency of chromosomal aberrations in subjects with gonosomopathies: Experience in 19 years of work

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Marlén Quesada Dorta

2004-08-01

Full Text Available El objetivo de este trabajo fue determinar la frecuencia de aberraciones cromosómicas en un grupo de pacientes portadores de gonosomopatías y relacionar en cada caso el significado de las diferentes aberraciones cromosómicas encontradas con el diagnóstico clínico realizado. Se estudiaron desde el punto de vista citogenético 656 pacientes con diagnóstico presuntivo de gonosomopatías, recibidos en el laboratorio de genética molecular del Hospital Clinicoquirúrgico "Hermanos Ameijeiras" entre los años 1982 y 2001, procedentes de distintas instituciones hospitalarias del país. Del total de pacientes con diagnóstico presuntivo de gonosomopatías, en el 32,7 % (215/656 se confirmó el diagnóstico clínico con el estudio citogenético. El estudio cromosómico se realizó por técnicas de bandas G. Los reordenamientos cromosómicos encontrados se clasificaron en 4 grupos; el de mayor frecuencia fue el de las gonosomopatías numéricas, con 110 pacientes que representan el 51 % del total. En orden de frecuencia siguieron el grupo de las alteraciones numéricas y estructurales (mosaicos con 59 pacientes (27,0, las inversiones de sexo con 24 (12,0 y el grupo de las gonosomopatías estructurales con 22 (10,0. Las aberraciones cromosómicas más comunes fueron las gonosomopatías numéricas (síndromes de Turner y Klinefelter. El estudio cromosómico en estos pacientes constituye un indicador de valor diagnóstico de gran importancia para la conducta terapéutica a seguir en cada caso.This paper was aimed at determining the frequency of chromosomal aberrations in a group of patients carriers of gonosomopathies and at relating in each case the meaning of the different chromosomal aberrations found to the patients' clinical diagnosis. 656 patients with presumptive diagnosis of gonosomopathies from different hospital institutions of the country that were received at the mollecular genetics laboratory of "Hermanos Ameijeiras" Clinical and Surgical

Use of computer systems to evaluate the process of activated sludge. Application to the EDAR of Cordoba La Golondrina; Sistemas informaticos para evaluar el proceso de fangos activados en la depuracion de aguas residuales. su aplicacion en la EDAR de Cordoba La Golondrina

Energy Technology Data Exchange (ETDEWEB)

Soca Olazabal, N.; Polonio Baeyens, D.; Ayuso Munoz, J. [Universidad de Cordoba (Spain)

1999-07-01

The operation of the reactor of activated sludge the EDAR of Cordoba (Spain), has been simulated using a computer application APERGO, which can work with diverse kinetic models and it determines the DBO5 of exit of the reactor in an immediate way, the flow to purge to obtain in the treated water a DBO5 wanted, the production of sludge in the primary, secondary and total treatment and lastly it provides the necessities of oxygenate, according to the equations more common of the literature, that can help to optimize the energy expense of the plant. (Author) 14 refs.

Undifferentiated tropical febrile illness in Cordoba, Colombia: Not everything is dengue

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Salim Mattar

2017-09-01

Full Text Available Summary: In Colombia, undifferentiated tropical febrile illness (UTFI are frequent and of considerable concern. They also share many clinical features. Between 2012 and 2013 in an endemic tropical area of Cordoba, Colombia, we conducted a prospective study to establish an etiological diagnosis of UTFI. Using diagnostic tests for dengue, leptospirosis, hantavirus, malaria, rickettsia, brucellosis, hepatitis A and B on 100 patients recruited for the study. We identified 69 patients with presumed UTFI: leptospirosis (n = 27, dengue (n = 26, hantavirus infection (n = 4, malaria (n = 4, rickettsial infection (n = 2, hepatitis A (n = 1, and brucellosis (n = 1; no hepatitis B cases were detected. Co-infections with malaria and leptospirosis (n = 1, hepatitis A and dengue (n = 1, hantavirus and dengue (n = 1, hantavirus, dengue, and leptospirosis (n = 1 were also identified. No etiologic agent was identified for 31 patients. We conclude that other etiologic agents besides dengue virus deserve greater attention by physicians and public health authorities in tropical area of Colombia. Keywords: Leptospirosis, Hantaviruses, Malaria, Vector-borne diseases, Zoonotic diseases

ESTUDIO DE SECUENCIAS DE TALLA LÍTICA A TRAVÉS DE MODELOS EXPERIMENTALES EN ROCAS SILÍCEAS DEL CENTRO DE ARGENTINA (Study of lithic carving sequences through experimental models in siliceous rocks of central Argentina

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Eduardo Pautassi

2012-10-01

Full Text Available La evidencia arqueológica dejada por los grupos humanos que habitaron el centro de Argentina (provincias de Córdoba y San Luis, desde las primeras ocupaciones hasta momentos previos a la conquista española, pone de manifiesto que estas poblaciones desarrollaron diversas estrategias y adaptaciones a lo largo del tiempo. Una de estas estrategias es la producción de artefactos líticos. En este trabajo, se aborda el estudio de las secuencias de reducción de clastos y de manufactura de bifaces experimentales aplicando la metodología de análisis «no tipológico» para el estudio de los desechos de talla. Estas experiencias fueron realizadas como resultado del análisis de la tecnología lítica de sitios arqueológicos ubicados en la localidad arqueológica de Estancia La Suiza, San Luis. La finalidad de este trabajo es comparar ciertos atributos de las lascas producto de la experimentación para diferenciar tipos de actividades de talla. Realizar esta propuesta nos permite presentar en otra oportunidad la comparación con el registro arqueológico, e intentar dilucidar cómo fueron los diferentes momentos en el proceso de talla. ENGLISH: The archaeological evidence left by the humans who occupied the center of Argentina (comprising the present territory of the provinces of Cordoba and San Luis, Argentina, from the earliest settlements until the moments before the Spanish conquest, shows that these populations developed different strategies and adaptations to the environment over time. One such strategy is the production of lithic artifacts. This contribution specifically addresses the study of sequence of cores and reducing manufacturing bifaces by applying the methodology of the “non-typological” analysis to the study of debitage. These experiments were conducted as a result of the analysis of the lithic technology of archaeological sites located at the archaeological locality of Estancia La Suiza, in San Luis province. The purpose of

Prevalence and antibiotic susceptibility of coagulase-negative Staphylococcus species from bovine subclinical mastitis in dairy herds in the central region of Argentina.

Science.gov (United States)

Raspanti, Claudia G; Bonetto, Cesar C; Vissio, Claudina; Pellegrino, Matías S; Reinoso, Elina B; Dieser, Silvana A; Bogni, Cristina I; Larriestra, Alejandro J; Odierno, Liliana M

2016-01-01

Coagulase-negative staphylococci (CNS) are a common cause of bovine subclinical mastitis (SCM). The prevalence of CNS species causing SCM identified by genotyping varies among countries. Overall, the antimicrobial resistance in this group of organisms is increasing worldwide; however, little information exists about a CNS species resistant to antibiotics. The aim of the present study was to genotypically characterize CNS at species level and to determine the prevalence and antibiotic resistance profiles of CNS species isolated from bovine SCM in 51 dairy herds located in the central region of the province of Cordoba, Argentina. In this study, we identified 219 CNS isolates at species level by PCR-restriction fragment length polymorphism of the groEL gene. Staphylococcus chromogenes (46.6%) and Staphylococcus haemolyticus (32%) were the most prevalent species. A minimum of three different CNS species were present in 41.2% of the herds. S. chromogenes was isolated from most of the herds (86.3%), whereas S. haemolyticus was isolated from 66.7% of them. The broth microdilution method was used to test in vitro antimicrobial susceptibility. Resistance to a single compound or two related compounds was expressed in 43.8% of the isolates. S. chromogenes and S. haemolyticus showed a very high proportion of isolates resistant to penicillin. Resistance to two or more non-related antimicrobials was found in 30.6% of all CNS. S. haemolyticus exhibited a higher frequency of resistance to two or more non-related antimicrobials than S. chromogenes. Copyright © 2016 Asociación Argentina de Microbiología. Publicado por Elsevier España, S.L.U. All rights reserved.

Tecnología para la gestión del alumbre de cromo (III) y potasio como pigmento cerámico

OpenAIRE

Morales-Rodríguez, Idalberto Clemente; Rivas-Fernández, Katia; Ferro-Nieto, Alyn; Moro-Muñoz, Wilson; Calzadilla-Liens, Alfredo

2017-01-01

Entre los desechos peligrosos que se generan en Cuba están los reactivos ociosos y caducados, algunos de los cuales contienen metales pesados. Estas sustancias se acumulan sin una disposición final, ni uso apropiado, con la finalidad de no contaminar el medio ambiente. En tal sentido, los autores proponen una alternativa de utilización para el alumbre de cromo (III) y potasio, al convertirlo en óxido por precipitación con un álcali para aplicarlo como pigmento cerámico. Además se presentan la...

Sound in ecclesiastical spaces in Cordoba. Architectural projects incorporating acoustic methodology (El sonido del espacio eclesial en Cordoba. El proyecto arquitectonico como procedimiento acustico)

Science.gov (United States)

Suarez, Rafael

2003-11-01

This thesis is concerned with the acoustic analysis of ecclesiastical spaces, and the subsequent implementation of acoustic design methodology in architectural renovations. One begins with an adequate architectural design of specific elements (shape, materials, and textures), with the intention of elimination of acoustic deficiencies that are common in such spaces. These are those deficiencies that impair good speech intelligibility and good musical audibility. The investigation is limited to churches in the province of Cordoba and to churches built after the reconquest of Spain (1236) and up until the 18th century. Selected churches are those that have undergone architectural renovations to adapt them to new uses or to make them more suitable for liturgical use. The thesis attempts to summarize the acoustic analyses and the acoustical solutions that have been implemented. The results are presented in a manner that should be useful for the adoption of a model for the functional renovation of ecclesiastical spaces. Such would allow those involved in architectural projects to specify the nature of the sound, even though somewhat intangible, within the ecclesiastical space. Thesis advisors: Jaime Navarro and Juan J. Sendra Copies of this thesis written in Spanish may be obtained by contacting the advisor, Jaime Navarro, E.T.S. de Arquitectura de Sevilla, Dpto. de Construcciones Arquitectonicas I, Av. Reina Mercedes, 2, 41012 Sevilla, Spain. E-mail address: jnavarro@us.es

Talla final de mujeres de Córdoba, Argentina, y exploración de la tendencia secular (1978­1988) Full adult height of women in Cordoba, Argentina, and an exploration of secular trends 1978­1988

OpenAIRE

Fernando Agrelo; Laura Rosa Pascual; Beatriz Lobo; Jacobo Sabulsky

1999-01-01

Este trabajo tuvo por objeto aportar datos locales sobre la talla final de mujeres de Córdoba, Argentina, y explorar la posibilidad de una tendencia secular en su crecimiento. Se examinaron 513 mujeres de 18 a 40 años de edad, madres de niños incluidos en el estudio CLACYD (Córdoba: lactancia, alimentación, crecimiento y desarrollo). Las mediciones se realizaron según técnicas estandarizadas, durante mayo y junio de 1994. Usando como normas de referencia datos del Centro Nacional de Estadísti...

Argentina

International Nuclear Information System (INIS)

Tanis, S.; Ramberg, B.

1990-01-01

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

Remoción de cromo y demanda química de oxígeno de aguas residuales de curtiembre por electrocoagulación

OpenAIRE

Mayta, Roddy; Mayta, Jhony

2017-01-01

Se estudió la remoción de cromo III y demanda química de oxígeno (DQO) de muestras de aguas residuales de curtiduría por electrocoagulación (EC) en un reactor electroquímico de operación discontinua. La influencia de los tiempos (15 a 45 min), voltajes (5 a 10 V), diluciones (0 a 2) y sus interacciones en el proceso de EC fueron significativos (p

Problematic economic environment, landscape characterization for relief in an area of ​​the Pampa Loesica plana, pozo del Molle, Cordoba, Argentina

International Nuclear Information System (INIS)

Mansilla, L del V.; Karlsson, A.

2010-01-01

This research work was made in Argentina, province of Córdoba, near Pozo del Molle. Located East of the plain of Córdoba, in the geomorphological unit Pampean Loessic Plain. The landscape of this area is made of flat media rises framed by elongated depressions oriented mainly to the SW - NE y NW - SE, in which intersection flooded low-lying area are generated temporally. The human impact, together with the climate changes, mainly the increase in precipitations, affects the economic-environmental problems of the area. The elongated depressions are considered, globally, a problem, because of the soil erosion, in these depression, the agricultural production is reduced. Because of de complexity of the landscape, it was made different searches of topographical parameters, density of low-lying areas and soil variation. With all final results, the economic-environmental units was identified, usefull to make tax relief procedures, and for relate these variations with the soil productivity

Socioeconomic residential segregation and public housing policies. An approach from the Program “Mi Casa, Mi Vida”. Case study in the city of Cordoba, Argentina

Directory of Open Access Journals (Sweden)

Florencia Molinatti

2016-07-01

Full Text Available This paper aims to analyze the possible effects of the housing program “Mi Casa, Mi Vida” in socioeconomic residential segregation in the city of Córdoba (Argentina. These effects are estimated from the study of the socioeconomic residential composition (before and after the implementation of the program, the mapping of residential movements generated by the program and the application of bivariate autocorrelation techniques. Among the key findings, most of the program beneficiaries are concentrated in poor areas surrounded by others in similar conditions. This fact favors the existence of a large cluster of poverty in the peripheries of the city and promotes marginalization and social exclusion.

Eficacia del medio de cultivo CromoCen(R CC en el diagnóstico de la infección urinaria Efficacy of the CromoCen (R culture medium in the diagnosis of urinary infection

Directory of Open Access Journals (Sweden)

Emilio Simón Barroso de la Cruz

2006-12-01

Full Text Available Se realizó la evaluación del desempeño con muestras clínicas de orina para determinar la eficacia del CromoCen(R CC como medio de cultivo en el diagnóstico de la infección urinaria, e identificar, con su utilización, los grupos bacterianos más frecuentes y el tiempo necesario para realizar el diagnóstico. En una muestra de 500 casos atendidos en la consulta externa de urología y realizados en el servicio de microbiología de San Antonio de los Baños, en la provincia de La Habana, en el período comprendido desde enero a junio de 2003. Se confirmó la hipótesis de trabajo: el medio de cultivo estudiado fue eficaz en el diagnóstico rápido de la infección urinaria. Desde el punto de vista ético se mantuvo la confidencialidad, se elevó la autoestima del binomio médico-paciente, y su calidad de vida desde el punto de vista bioético, por lo que se recomienda emplear este medio de cultivo en el diagnóstico rápido de la infección urinaria.The evaluation of the performance with clinical samples of urine was carried out to determine the efficacy of CromoCen(R CC as a culture medium in the diagnosis of urinary infection, and to identify with its use the most frequent bacterial groups and the time necessary to make the diagnosis. In a sample of 500 cases seen at the aoutpatient department of urology and analyzed at the microbiology service of San Antonio de los Baños, in the province of Havana, from January to June, 2003, it was confirmed the working hypothesis: the studied culture medium was efficient for the rapid diagnosis of urinary infection. From the ethical point of view, the reliability was maintained, and the self-steem of the physician-patient binomial, as well as the quality of life of the patient from the bioethical view increased. That's why, it is recommended to use this culture medium in the rapid diagnosis of the urinary infection.

First symposium seed implant 125I and high rate of prostate

International Nuclear Information System (INIS)

2012-01-01

The First symposium seed implant 125 I and high rate of prostate, was organized by the Marie Curie Foundation, between the 12 to april 2012, in the Cordoba city of Argentina. In this event were presented several documents in different topics: patients selection for impacts of 125 I seeds; high doses radiation in radiotherapy; brachytherapy for prostate cancer; prostate implant technique with 125 I seeds; implant dosimetric aspects; radioprotection of 125 I seeds.

Material Culture and Daily Hygiene in Córdoba in the Nineteenth Century

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Cecilia Moreyra

2017-06-01

Full Text Available From the history of everyday life and material culture studies, in this paper we describe and analyze household cleaning practices in the city of Cordoba (Argentina. We look for the presence (or absence of material objects and rooms for the daily hygiene in post mortem inventories. Changes in material culture and the domestic architecture allow us to recognize both changes as stays in the sensibilities and the ideas of cleanliness and dirtiness.

USO DE ESCHERICHIA COLI PARA BIORREMEDIACIÓN DE EFLUENTES CONTAMINADOS POR CROMO (VI

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María C. Panigatti

2012-01-01

Full Text Available El objetivo del trabajo fue estudiar el uso de la Escherichia coli en la detoxificación de aguas residuales con Cr (VI perteneciente a una planta metalmecánica. Se evaluó el crecimiento y desarrollo de E. coli con distintas concentraciones de Cr (VI, en diferentes tiempos y condiciones de trabajo. Se estudió la biorreducción de cromo utilizando la cepa en estudio, en diferentes soportes y se evaluó la influencia de la presencia de metales tales como plomo, níquel y zinc. La bacteria fue capaz de reducir Cr(VI trabajando con concentraciones de hasta 200 mg . L-1. Se comprobó la adaptabilidad de la cepa para adoptar como mecanismo de detoxificación, la biorreducción del metal pesado. La presencia de otros metales como plomo, níquel y zinc retrasa el proceso, pero no lo inhibe totalmente. Los resultados obtenidos demuestran la posibilidad de utilizar E. coli en la biorremediación de un efluente industrial conteniendo Cr(VI.

Preparation of mandatory documentation before the start up of the RA-0 'zero power' nuclear reactor at Cordoba National University

International Nuclear Information System (INIS)

Martin, H.R.; Keil, W.M.; Pezzi, N.

1991-01-01

Before the start up of the RA-0 'zero power' nuclear reactor installed at Cordoba National University, it was necessary to send to the Regulatory Authority the mandatory documentation which is required in the licensing process. With the previous papers existing for the operation in the first years of the '70, a work program for the future operational training personnel was elaborated. Based on the Authority's applicable rules and the recommendations and with particular criteria originated in the working university conditions, the SAFETY report of RA-0 nuclear reactor was prepared. This paper describes the principal contents, items and documents involved in the safety report. (Author) [es

Determinación de indicadores de eutrofización en el embalse Río Tercero, Córdoba (Argentina Determination of trophic indicators in Rio Tercero reservoir, Cordoba (Argentina

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Claudia Ledesma

2013-09-01

Full Text Available La eutrofización es una de las problemáticas ambientales más importantes de lagos y embalses. El embalse Río Tercero (Argentina se encuentra afectado por diversas actividades antrópicas que impactan negativamente sobre el recurso. A la hora de generar un programa de monitoreo de los sistemas acuáticos, una de las consideraciones más importante es poder definir las variables más significativas. El análisis multivariado se presenta como una herramienta alternativa. El objetivo de este trabajo fue determinar la calidad del agua y estado trófico del embalse Río Tercero, con el fin de generar bases para una adecuada gestión de los recursos hídricos. Se realizaron campañas de muestreos durante los años 2003 a 2006 donde se midieron parámetros de calidad del agua. Se determino el estado trófico del reservorio. Se realizó un análisis multivariado, generando una matriz de correlación y un análisis de componentes principales (ACP. El embalse experimentó un deterioro en su calidad, pasando desde un estado de mesotrófico a eutrófico. Se demostró que existe correlación positiva entre la clorofila- a y las variables fósforo total (r = 0.83, oxigeno disuelto (r = 0.51 y temperatura (r = 0.43. El ACP explicó el 65,6% de la variabilidad total de los datos. El análisis multivariado estableció que las variables más significativas para explicar la variabilidad en el reservorio fueron clorofila-a, fósforo total y temperatura, lo que demuestra que los florecimientos algales deberían ocurrir en las estaciones primavera-verano. Los resultados obtenidos permiten generar un programa preliminar de monitoreo y gestión extrapolable a otros recursos acuáticos.Eutrophication is one of the most important environmental problems in lakes and reservoirs. Río Tercero reservoir (Argentina is affected by various human activities that impact negatively on the system. When generating a monitoring program of aquatic systems, one of the most important

Estudo dos mecanismos de detoxificação e tolerância aos metais cromo e cobre em Pseudokirchneriella subcapitata e Pistia stratiotes e o uso das macrófitas Typha sp e Phragmites sp na remoção de nutrientes em wetlands construídos

OpenAIRE

Patrícia Carla Giloni de Lima

2010-01-01

A presente pesquisa teve por objetivos principais: (1) estudar a bioacumulação do metal cromo (40-50 \\'mü\\'g/L) na Clorophyceae Pseudokirchneriella subcapitata (Korshikov) Hindak 1990 e dos metais cobre (2-10 \\'mü\\'g/L) e cromo (1-6 mg/L) na macrófita Pistia stratiotes L.; (2) avaliar os mecanismos de detoxificação, as estratégias de defesa e tolerância de Pistia stratiotes L., visando recomendar seu uso na fitorremediação; ambos através do uso do Delineamento Composto Central (DCC) e Metodol...

Argentina: Background and U.S. Relations

Science.gov (United States)

2008-11-05

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

Separación selectiva de hierro y cromo de las lejías agotadas del decapado de acero inoxidable

Directory of Open Access Journals (Sweden)

Gálvez, J. L.

2005-12-01

Full Text Available Stainless steel spent pickling baths are very complex solutions of metals and acids (HNO₃ and HF and are a very important environmental concern. Several processes have been developed for acid recovery (free and bounded acid with techniques like acid retardation, solvent extraction, evaporation and dialysis diffusion. In these processes, metallic content is precipitated and treated for its disposal. We have developed a process that permits the separation of metals by means of a selective precipitation, induced by adding free fluoride. Iron (Fe and chromium (Cr precipitate as pentafluorides and nitrogennickel (Ni remains in solution. After this stage, complex fluorides can be hydrolized with alkali to give iron and chromium hydroxides, releasing fluoride in solution

Los baños ácidos agotados del decapado de acero inoxidable son disoluciones muy complejas debido al alto contenido de metales y ácidos (HNO₃ y HF, por lo que constituyen un grave problema medioambiental. Existen tratamientos comerciales para la recuperación del ácido (libre o complejado que se basan en técnicas de retardo ácido, extracción con disolventes, evaporación o membranas. En estos procesos el contenido metálico es precipitado y tratado como un residuo. El grupo de investigación formado por los autores del presente trabajo ha desarrollado un procedimiento que permite el aprovechamiento de dichos metales mediante su recuperación selectiva con una técnica de precipitación modificada inducida por fluoruro libre. Se consigue la precipitación de hierro (Fe y cromo (Cr como pentafluoruros (pH 3-4,5 dejando el níquel en disolución. Posteriormente, los fluoruros complejos son hidrolizados con álcali dando lugar a hidróxidos de hierro y cromo, mientras que el fluoruro es redisuelto.

ESTIMACIONES ACERCA DE LA SALUD DE POBLACIONES QUE OCUPARON LAS SIERRAS CENTRALES Y PLANICIES ORIENTALES (CÓRDOBA, ARGENTINA EN EL HOLOCENO TARDÍO: UNA APROXIMACIÓN DESDE LA ANTROPOLOGÍA DENTAL / Estimating Late Holocene health from Cordoba´s...

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Claudina Victoria González

2011-12-01

Full Text Available El objetivo de este trabajo es analizar desde una perspectiva bioarqueológica las condiciones generales de salud de las poblaciones humanas que ocuparon la región austral de las Sierras Pampeanas en el Holoceno tardío (ca. 2500-400 años A.P., particularmente a través del estudio de bioindicadores dentales tales como hipoplasias del esmalte dental, abscesos y pérdidas dentales ante mortem. Se analizó una muestra de 80 individuos adultos de ambos sexos, procedentes de 48 sitios de toda la región. Se calcularon prevalencias por sexo, edad, cronología -Holoceno tardío inicial (ca. 2500-1500 años AP. y final (ca.1500-400 años AP-, así como sub-regiones geográficas - Sierras Chicas, Noreste, Noroeste, Llanura extraserrana, Sur y Traslasierra-. Posteriormente, se evaluó si las diferencias observadas eran significativas o no, mediante la aplicación del test de Chi-cuadrado (X2. Los resultados indican que las poblaciones asentadas en la región hacia momentos finales del Holoceno tardío habrían sufrido un deterioro en las condiciones generales de salud, principalmente los individuos adultos jóvenes y medios de toda el área, siendo mayor la intensidad en las sub regiones Noreste y Traslasierra.   Palabras clave: bioindicadores dentales, salud, región austral de las Sierras Pampeanas, Bioarqueología   Estimating Late Holocene health from Cordoba´s Central Highlands end Eastern Lowland populations (Argentina. A dental anthropology approach   Abstract The aim of this work is to study, from a bioarchaeological perspective, the health conditions of the populations that inhabited the southern portion of the Sierras Pampeanas region (Córdoba province by the Late Holocene (ca. 2500-400 years BP, through the analysis of three non-specific indicators of stress and infectious diseases: hypoplasia of dental enamel, abscesses, and antemortem teeth loss. The sample is composed by 80 adult individuals from 48 archaeological sites. We

Climatology of hail in Argentina

Science.gov (United States)

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

2012-10-01

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

Operating practical experience at Argentina; Experiencia practica operativa en la Argentina

Energy Technology Data Exchange (ETDEWEB)

Quihillalt, Oscar [Nucleoelectria Argentina S.A., Buenos Aires (Argentina)

1998-12-31

Operating experiences of Atucha-1 and Embalse Nuclear Power Plants were discussed in this work. The technical and economic aspects, such as reliability, availability, personnel training, operating costs, prices and market, which exercise influence upon Argentina nuclear energy policy, mainly on the power electric generation by nuclear power plants were considered. Finally the current status of the nucleoelectric sector in Argentina and forecasting were analysed. 3 figs., 5 tabs.

Traditional Dietary Pattern Increases Risk of Prostate Cancer in Argentina: Results of a Multilevel Modeling and Bias Analysis from a Case-Control Study

International Nuclear Information System (INIS)

Niclis, C.; Roman, M. D.; Eynard, A. R.; Diaz, M. D. P.

2015-01-01

There is increasing evidence that dietary habits play a role in prostate cancer (PC) occurrence. Argentinean cancer risk studies require additional attention because of the singular dietary pattern of this population. A case-control study (147 PC cases, 300 controls) was conducted in Cordoba (Argentina) throughout 2008-2013. A principal component factor analysis was performed to identify dietary patterns. A mixed logistic regression model was applied, taking into account family history of cancer. Possible bias was evaluated by probabilistic bias analysis. Four dietary patterns were identified: Traditional (fatty red meats, offal, processed meat, starchy vegetables, added sugars and sweets, candies, fats, and vegetable oils), Prudent (non starchy vegetables, whole grains), Carbohydrate (sodas/juices and bakery products), and Cheese (cheeses). High adherence to the Traditional (OR 2.82, 95 % CI: 1.569-5.099) and Carbohydrate Patterns (OR 2.14, 95 % CI: 1.470-3.128) showed a promoting effect for PC, whereas the Prudent and Cheese Patterns were independent factors. PC occurrence was also associated with family history of PC. Bias adjusted ORs indicate that the validity of the present study is acceptable. High adherence to characteristic Argentinean dietary patterns was associated with increased PC risk. Our results incorporate original contributions to knowledge about scenarios in South American dietary patterns and PC occurrence.

Medición de la capacidad de chlorella vulgaris y scenedesmus acutus para la remoción de cromo de aguas de curtiembre

OpenAIRE

Ardila Forero, Liliana

2012-01-01

El proceso de curtido de pieles es una actividad contaminante debido a la liberación de agentes tóxicos al medio ambiente; el más importante de aquellos es el cromo trivalente, usado como agente curtiente. Se han planteado diferentes alternativas para la remoción de este metal del agua residual del proceso de curtido, incluyendo la optimización de los procesos y operaciones dentro de las curtiembres, y soluciones de final de tubo como los procesos fisicoquímicos de adsorción y precipitación a...

A new method in estimation of total hexavalent chromium in Portland pozzolan cement; Un nuevo método en la determinación del cromo hexavalente total en cemento Portland puzolánico.

Energy Technology Data Exchange (ETDEWEB)

Sharma, R.; Sharma, D.

2017-07-01

Variamine blue was used first time for the detection of hexavalent chromium from cement samples. In present method, cement was treated sequentially with water, sulphate and carbonate buffer to extract soluble, sparingly soluble and insoluble hexavalent chromium respectively. Extracted Cr (VI) was determined using variamine blue as chromogenic reagent. The determination is based on the reaction of hexavalent chromium with potassium iodide in an acid medium to liberate iodine. This oxidizes variamine blue to form a violet coloured species having an absorption to maximum at 556 nm. Energy-dispersive X-ray spectroscopy (EDX) and Infrared Spectroscopy (IR) confirmed the complete extraction of hexavalent chromium by sequential extraction process. SRM 2701 (Reference material from NIST, USA) was used for revalidating the results. The percentage of recovery for proposed and reference method (diphelycarbazide method) varied from 98.5 to 101 and 97.5 to 100.5. Whereas, their relative error percentage varied from -1.5 to 0.33 and -2.5 to 0.5. [Spanish] El azul de variamina se utilizó por primera vez para la detección de cromo hexavalente en muestras de cemento. En el presente método, el cemento se trató secuencialmente con agua, y tampones sulfato y carbonato para extraer el cromo hexavalente soluble, poco soluble e insoluble, respectivamente. El Cr (VI) extraído se determinó utilizando azul de variamina como reactivo cromógeno, por reacción del cromo hexavalente con yoduro de potasio en un medio ácido para liberar yodo. Esto oxida al azul de variamina para formar una especie de color violeta con una absorción máxima a 556 nm. El análisis por energía dispersiva de rayos X (EDX) y la espectroscopía de infrarrojos (IR) confirmaron la extracción completa de cromo hexavalente mediante el proceso de extracción secuencial. Se utilizó SRM 2701 (material de referencia de NIST, EE.UU.) para validar los resultados. El porcentaje de recuperación para el m

Medical revolution in Argentina.

Science.gov (United States)

Ballarin, V L; Isoardi, R A

2010-01-01

The paper discusses the major Argentineans contributors, medical physicists and scientists, in medical imaging and the development of medical imaging in Argentina. The following are presented: history of medical imaging in Argentina: the pioneers; medical imaging and medical revolution; nuclear medicine imaging; ultrasound imaging; and mathematics, physics, and electronics in medical image research: a multidisciplinary endeavor.

Caracterización Fitoquímica y Efecto Hipoglucemiante de Tecoma stans y su Relación con la Presencia del Cromo como Factor de Tolerancia a la Glucosa Phytochemical Characterization and Hypoglycemic Effect of the Tecoma stans and its Relationship to the Presence of Chromium as a Factor for Glucose Tolerance

OpenAIRE

Ma. de J Ibarra; Pedro C Cantú; María J Verde; Azucena Oranday

2009-01-01

Se realizó la caracterización fitoquímica y la determinación del cromo en hojas de Tecoma stans, observando su efecto hipoglucemiante en animales con diabetes mellitus inducida en forma experimental. Como hiperglucemiante se utilizó estreptozotocina en ratas machos Sprague-Dawley a una dosis de 45 mg/kg de peso. Los tratamientos experimentales, todos por vía oral, fueron los siguientes para grupos diabéticos y grupos no diabéticos: agua, infusión de la planta, picolinato de cromo, e infusión ...

Entomofauna associated to horticultural crops under organic and conventional practices in Cordoba, Argentina; Entomofauna asociada a cultivos horticolas organicos y convencionales en Cordoba, Argentina

Energy Technology Data Exchange (ETDEWEB)

Zalazar, Laura; Salvo, Adriana [Universidade Nacional de Cordoba (Argentina). Facultad de Ciencias Exactas Fisicas y Naturales. Centro de Investigaciones Entomologicas de Cordoba (CIEC)

2007-09-15

Farming practices and the addition of chemical synthetic substances in conventional agroecosystems are detrimental mainly to natural enemies of phytophagous insects, diminishing the natural regulation of pest insects. On the other hand, in organic agriculture, biological processes and care of the environment are favoured, hence an increase in insect biodiversity is predicted in this type of systems. In this work, abundance, richness of insects and proportion of functional groups were compared through a single quantitative sampling of insects in horticultural crop fields, three under organic and three under conventional management practices. Insect species richness, total and for guilds (phytophagous and entomophagous insects) were significantly higher in organic orchards, and also was the abundance of entomophagous insects. Richness and abundance of all insect orders (with exception of Homoptera abundance), were higher in orchards under organic management, being significant the differences for richness of Coleoptera and richness and abundance of Hymenoptera. Similar tendencies were observed in data obtained through sweep net in weeds. These results suggest that organic practices increase the diversity of species, particularly that of natural enemies. (author)

Dump evaluation for landscape restoration of an ancient cacareous quarry

International Nuclear Information System (INIS)

Paredes, R.; Ayala, R.; Trevisiol, S.

2010-01-01

This work is about the geological - mining study in the limestone quarry in the west of Valle Hermoso town - Cordoba - Argentina. The generation of dump material is considered a waste but is inherent to the process of rocks and minerals extraction. The dump stocks evaluation take into account the different types of rocks with physical and chemical characteristics. The dump has several carbonatic qualities and can be given useful to uncover material originally dismissed as to be used as crushed stone for concrete and others.The reuse of this waste can be allocated primarily to the construction industry, and explore other potential uses, would rehabilitate these lands, and thus eliminate an environmental liability .This work is about the geological - mining study in the limestone quarry in the west of Valle Hermoso town - Cordoba - Argentina. The generation of dump material is considered a waste but is inherent to the process of rocks and minerals extraction. The dump stocks evaluation take into account the different types of rocks with physical and chemical characteristics. The dump has several carbonatic qualities and can be given useful to uncover material originally dismissed as to be used as crushed stone for concrete and others.The reuse of this waste can be allocated primarily to the construction industry, and explore other potential uses, would rehabilitate these lands, and thus eliminate an environmental liability

Efecto de la asociación alga-bacteria Bostrychia calliptera (Rhodomelaceae en el porcentaje de remoción de cromo en laboratorio The effect of chromium removal by Algae-bacteria Bostrychia calliptera (Rhodomelaceae consortia under laboratory conditions

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Ana Lucía Rengifo-Gallego

2012-09-01

Full Text Available Para determinar el porcentaje de remoción de cromo en la asociación alga-bacteria, se tomaron ejemplares del alga Bostrychia calliptera de pneumatóforos de Avicennia germinans y Rizophora mangle, en la desembocadura del Río Dagua, Pacífico colombiano. El ensayo se realizó in vitro en agua marina sintética a dos concentraciones de cromo 5 y 10mg/L, empleando biorreactores con cuatro tratamientos; i material Alga-Bacteria (AB, ii material algal con antibiótico Alga-antibiótico (AA, iii consorcio bacteriano natural (CBN y iv control sin presencia de B. calliptera ni bacteria. Se monitoreó el comportamiento de poblaciones bacterianas y el porcentaje de disminución de cromo mediante AAS (Espectroscopía de absorción atómica. Se obtuvo diferencias significativas entre los tratamientos Alga-bacteria (AB y el consorcio bacteriano natural (CBN, siendo Alga-bacteria más eficiente a 10mg/L (87%. El consorcio bacteriano natural CBN obtuvo mayor porcentaje de remoción a bajas concentraciones de cromo a 5ppm (62.85%. Los resultados mostraron una interacción positiva entre las bacterias asociadas (CBN a la superficie del alga roja B. calliptera en su proceso acumulativo de cromo.Water pollution is one of the most important environmental problems worldwide. Recently, biotechnology studies have oriented efforts to study algae-bacterium consortia with the aim to understand the mechanisms to find a possible solution in environmental sciences. This study determined the percentage of chromium removal by the alga-bacterium association exposed to a set of different chromium concentrations under controlled in vitro conditions. Wild plants of Bostrychia calliptera associated with bacterial populations were collected from Dagua River, Pacific coast of Colombia, and were monitored in the laboratory. The trial was conducted with synthetic seawater in bioreactors at two chromium levels: 5 and 10mg/L, and four different experimental treatments: i algae

Diversification of the Public Reader in Bogotá (1910- 1924. An Analysis of El Gráfico and Cromos Illustrated Magazines

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Paula Andrea Marín Colorado

2016-07-01

Full Text Available El Gráfico (1910-1941 and Cromos (1916-present day were two widely recognized Colombian magazines of the first decades of the XX c. The objective of both of these publications was the (real and imaginary configuration of a wide reading public that would consolidate the editorial industry; a possible reason for the inclusion of literature as a comercial Enterprise in these publications. This study will examine the configuration of the reader, as part of the editorial project of both magazines, and the reading (and consumer practices evident in aspects such as advertising and the writing forms included, such as chronicles, short stories and literary criticism.

Argentina's nuclear red herring

International Nuclear Information System (INIS)

Perera, J.

1983-01-01

The article deals with Argentina's nuclear power programme over the last 30 years, including the country's efforts to be nuclear independent of the United States, as well as its aspirations to be a nuclear supplier to latin America. The latter policy on economic, rather than military grounds for nuclear weapons, has led to Argentina's decision to build a uranian enrichment plant. (U.K.)

Soil Properties Database of Spanish Soils. Volume VI.- Andalucia (a): Jaen, Cordoba, Sevilla and Huelva; Base de Datos de Propiedades Edafologicas de los Suelos Espanoles. Volumen VI.- Andalucia (a): Jaen, Cordoba, Sevilla y Huelva

Energy Technology Data Exchange (ETDEWEB)

Trueba, C; Millan, R; Schmid, T; Lago, C [Ciemat. Madrid (Spain); Roquero, C; Magister, M [UPM. Madrid (Spain)

1999-05-01

The soil vulnerability determines the sensitivity of the soil after an accidental radioactive contamination due to Cs-137 and Sr-90. The Department de Impacto Ambiental de la Energia of CIEMAT is carrying out an assessment of the radiological vulnerability of the different Spanish soils found on the Iberian Peninsula. This requires the knowledge of the soil properties for the various types of existing soils. In order to achieve this aim, a bibliographical compilation of soil profiles has been made to characterize the different soil types and create a database of their properties. Depending on the year of publication and the type of documentary source, the information compiled from the available bibliography is very heterogeneous. Therefore, an important effort has been made to normalize and process the information prior to its incorporation to the database. This volume presents the criteria applied to normalize and process the data as well as the soil properties of the various soil types belonging to the provinces of Jaen, Cordoba, Sevilla and Huelva of the Comunidad Autonoma de Andalucia. (Author) 67 refs.

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)

Preferencia de hospedadores de Culicidae (Diptera recolectados en el centro de la Argentina Host preference of Culicidae (Diptera collected in central Argentina

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Walter R. Almirón

1995-04-01

dolosus alimentou-se em todas as iscas, enquanto que Cx. acharistus, Cx. chidesteri e Cx. quinquefasciatus em galinhas, coelhos e tartarugas; Ae. albifasciatus, Ae. scapularis, Cx. bidens e Cx. coronator fizeram-no em ambos hospedeiros homeotermos; Cx. apicinus, Cx. maxi, Cx. saltanensis e Cx. spinosus alimentaram-se apenas em galinhas e Ps. ciliata em coelhos.In order to study the host preference of female mosquitoes, samples were taken fortnightly in Cordoba and Cosquin (Argentina, during October-April of two consecutive years. Four different vertebrates were used in baited-can traps: frogs, chickens, rabbits and turtles. The genus Culex acounted for 92.9% of the specimens collected, Aedes for 7.0% and Psorophora ciliata 0.02%. The highest proportion of females were collected in chicken traps (68.7%, followed by rabbit traps (29.9%, turtles (0.8% and frogs (0.5%, thus the majority of the mosquitoes were collected in traps with homeotermous hosts. Only Culex dolosus fed on all the hosts. Culex acharistus, Cx. chidesteri and Cx. quinquefasciatus fed on chickens, rabbits and turtles. Aedes albifasciatus, Ae. scapularis, Cx. bidens and Cx. coronator fed on both homeotermous hosts. Culex apicinus, Cx. maxi, Cx. saltanensis and Cx. spinosus fed only on chickens and Ps. ciliata only on rabbits.

Crisis de la prensa Argentina

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Federico Rey Lennon

2015-01-01

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

Coccocypselum pulchellum (Rubiaceae, nuevo registro para Argentina

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Elsa L. Cabral

2007-01-01

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

Cinética de la biosorción de cromo hexavalente en solución acuosa por biomasa de Hueso de Prunus Pérsica (Durazno)

OpenAIRE

Flores Rodríguez, Wilber Hugo

2014-01-01

El cromo hexavalente (Cr +6) representa un riesgo para el equilibrio ambiental y la salud humana, los métodos convencionales para remover metales pesados presentes en efluentes industriales generalmente son costoso e/o ineficientes. La biosorción es una alternativa novedosa, eficiente y económica para resolver este problema ya que es posible emplear subproductos de bajo costo y alta capacidad de remoción; El objetivo de este trabajo fue determinar las propiedades físico-químicas del hueso de ...

Recuperación post-fuego de la comunidad de líquenes epífitos en la provincia de Córdoba, Argentina Post-fire recovery of the epiphytic-lichen community in Cordoba province, Argentina

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Juan Manuel Rodriguez

2009-09-01

Full Text Available Los líquenes son reconocidos bioindicadores de la calidad del ambiente. Estudios de comunidades de líquenes en relación a los incendios forestales, han demostrado como responden al fuego por encima de las variables microambientales que modelan la comunidad en ausencia de este disturbio. El objetivo de la presente contribución es reconocer el efecto del fuego en la comunidad de líquenes del Bosque Serrano en Córdoba. Se seleccionaron dos zonas, una testigo y otra sometida a fuego en 1996. A través de un muestreo sistemático y estandarizado se relevó la presencia y cobertura de especies de líquenes en árboles y arbustos en las dos áreas estudiadas. Entre el área testigo y el incendiado la diversidad y cobertura de líquenes es similar pero varia su composición. Las especies en la zona incendiadas corresponden a líquenes heliófilos y adaptados a situaciones de estrés. El fuego como disturbio frecuente favorece la presencia de pocas especies con importantes coberturas que resistan las condiciones que el disturbio impone. Los incendios de alta intensidad y frecuencia dejan a la comunidad de líquenes sin posibilidades de desarrollo, disminuyendo la diversidad general y la calidad de los sistemas forestales en los que viven.Lichens are recognized bioindicators of environmental quality. Studies of lichen communities in relation to forest fires have shown the response to fire over micro-environmental variables that shape the community in the absence of this disturbance. The aim of this contribution is to recognize the effect of fire on the lichen community of Sierra Chaco in Cordoba province. Two areas were selected, one without past fire and the other with fire in 1996. Coverage and presence of lichen species on trees and shrubs were recorded in the two areas using systematic, standardized sampling. Diversity and coverage of lichens is similar between the two areas but composition varies. The lichen species in the burned area are

Efecto de la adición de un 10 % en volumen de cromo en el comportamiento a tracción de aleaciones pulvimetalúrgicas NiAlCr

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García-Barriocanal, J.

2005-08-01

Full Text Available The mechanical properties of Ni₃Al-Cr reinforced with 10% in volume fraction of chromium particles produced by powder metallurgy have been studied. For this purpose, milled powders with composition of Ni-20.9Al-8Cr-0.49B (% at. with and without the addition of 10% in volume fraction of chromium particles have been produced. Both alloys were consolidated by hot isostatic pressing (HIP. After HIP, heat treatment was applied to homogenize the microstructure. The chromium reinforcement has an important effect in the yield strength and ultimate strength increase. The reinforced alloy presents a yield strength of 1300 MPa at room temperature with respect to 800 MPa for the un-reinforced material. After heat treatment, the yield strength of both alloys does not change significantly. However, a decrease in ductility and ultimate tensile strength have been observed

En este trabajo se estudia la influencia de la adición de un 10 % en volumen, de cromo en las propiedades mecánicas de aleaciones Ni₃Al-Cr procesadas por vía pulvimetalúrgica. Para ello se prepararon dos aleaciones: la primera, se obtuvo por molienda de polvo de composición Ni-20,9Al-8Cr-0,49B (% at. y, a la segunda, se le añadió un 10 % en volumen de partículas de cromo, mediante un proceso de mezcla, previo al de molienda. Ambas, fueron consolidadas mediante compactación isostática en caliente (HIP y, por último, se les aplicaron tratamientos térmicos para homogeneizar la microestructura. Los resultados experimentales han mostrado que el refuerzo de cromo tiene como efecto un importante aumento del límite elástico y de la resistencia. Así, el material reforzado presenta un límite elástico cercano a 1.300 MPa, a temperatura ambiente, frente a los 800 MPa que presenta el material sin reforzar, a la misma temperatura. En relación con las propiedades mecánicas de los materiales tratados térmicamente, se observa que ambos experimentan un acusado

Fosfato de cromo (III marcado con diferentes radionúclidos para uso en radiosinoviortesis Chromium (III phosphate labelled with several radionuclides for use in radiosynoviothersis

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Jorge Cruz Arencibia

2012-06-01

Full Text Available Introducción: la radiosinoviortesis se utiliza en el tratamiento de la sinovitis crónica, complicación frecuente en enfermedades sistémicas como artritis reumatoide y hemofilia. En la práctica clínica internacional se emplean diferentes coloides y suspensiones radiactivas, pero su número es reducido y su disponibilidad limitada. Objetivo: obtención y caracterización físico-química de suspensiones de fosfato de cromo (III marcadas con radionúclidos como potenciales radiofármacos para uso en radiosinoviortesis. Métodos: las suspensiones se obtuvieron por síntesis química, los radionúclidos se añadieron al inicio de la reacción o después de finalizada esta. El tamaño de partículas se estimó mediante microscopia óptica y filtración por membranas. Asimismo se evaluó por espectrofotometría la estabilidad de la suspensión al ser resuspendida en distintos medios. La pureza radioquímica se determinó por cromatografía de papel. Resultados: se obtuvo y caracterizó una suspensión de fosfato de cromo (III. El producto obtenido presentó un tamaño de partículas predominante entre 0,8-5 µm y que al ser suspendidas en solución de gelatina al 2 % en tampón acetato 1 mg/mL no sedimentó en menos de 3 h. Se estableció la tecnología para la obtención de formulaciones de fosfato de cromo (III marcado con 32P e 90Y y se demostró la factibilidad de marcar la suspensión obtenida con otros radionúclidos trivalentes como 177Lu y 68Ga. Conclusiones: los resultados permiten considerar al fosfato de cromo (III una suspensión base para la obtención de radiofármacos para uso en radiosinoviortesis en diferentes articulaciones, en función de las características físico-nucleares de los radionúclidos que se empleen.Introduction: radiosynoviorthesis is used in treating chronic synovitis, a frequent complication of some systemic diseases as rheumatoid arthritis and hemophilia. There are different colloids and radioactive

Alteraciones cromosómicas en Leucemias mieloides agudas, un estudio de nueve años en 312 pacientes, implicaciones en el diagnóstico, pronóstico, tratamiento y seguimiento de la enfermedad

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G. Guevara

2001-07-01

Full Text Available Definir el tipo, frecuencia y distribución de las alteraciones cromosómicas presentes en una población colombiana con diagnóstico de leucemia mieloide aguda. Determinar su asociación con las características clinicopatológicas y analizar su impacto sobre la sobrevida de los pacientes.

Soil Properties Database of Spanish Soils. Volume VI.- Andalucia (a): Jaen, Cordoba, Sevilla and Huelva

International Nuclear Information System (INIS)

Trueba, C; Milian, R.; Schmid, T.; Lago, C.; Roquero, C; Magister, M.

1999-01-01

The soil vulnerability determines the sensitivity of the soil after an accidental radioactive contamination due to Cs-137 and Sr-90. The Departamento de Impacto Ambiental de la Energia of CIEMAT is carrying out an assessment of the radiological vulnerability of the different Spanish soils found on the Iberian Peninsula. This requires the knowledge of the soil properties for the various types of existing soils. In order to achieve this aim, a bibliographical compilation of soil profiles has been made to characterize the different soil types and create a database of their properties. Depending on the year of publication and the type of documentary source, the information compiled from the available bibliography is very heterogeneous. Therefore, an important effort has been made to normalize and process the information prior to its incorporation to the database. This volume presents the criteria applied to normalize and process the data as well as the soil properties of the various soil types belonging to the provinces of Jaen, Cordoba, Sevilla and Huelva of the Comunidad Autonoma de Andalucia. (Author) 67 refs

REMOCIÓN DE CROMO HEXAVALENTE DE AGUAS CONTAMINADAS USANDO QUITOSANO OBTENIDO DE EXOESQUELETO DE CAMARÓN

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Yina Pájaro

2013-08-01

Full Text Available El exoesqueleto de camarón desechadopor la industria puede ser aprovechadopara la obtención de quitina y quitosanocon la utilización de reactivos comercialesde muy bajo costo. El quitosano esun biopolímero que tiene diversos usos,entre ellos, la remoción de metales pesadosa partir de aguas residuales. En esteestudio se utilizó quitosano para la remociónde cromo hexavalente a partir demuestras de aguas residuales del procesode galvanizado (cromado de una industriade Cartagena. La remoción de cromose realizó por un proceso discontinuo, aun pH óptimo encontrado en este estudiode 2.0 y una temperatura de 26 ºC. Lacinética de adsorción fue estudiada medianteel uso de la isoterma de Langmuir,siendo la capacidad máxima de adsorción(Qmax de 200 mg/g. La remoción de cromohexavalente a partir de las muestrasde aguas residuales fue del 99.98 %.

Baixa dosagem de óxido de cromo para estimativa da produção fecal em bovinos Low level of chromium oxide to estimate faecal output in cattle

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Henrique Mendonça Nunes Ribeiro Filho

2008-12-01

Full Text Available Foi avaliado o uso de baixa dosagem de óxido de cromo (Cr2O3 incorporado em um alimento concentrado para estimativa da produção fecal (PF em bovinos. Para tanto, foram conduzidos quatro ensaios de digestibilidade in vivo utilizando quatro novilhos com peso vivo médio de 214±31kg, recebendo ad libitum no cocho azevém anual (Lolium multiflorum Lam. cortado verde. Aproximadamente 200g de ração contendo 5g kg-1 do indicador foi fornecida diariamente durante 12 dias, sendo feito a coleta de dados e amostras nos últimos cinco dias de cada período. A PF foi medida com o uso de sacolas de coleção total ou estimada com base na concentração do indicador em amostras fecais coletadas duas vezes ao dia (8 e 16h ou a intervalos de duas horas entre 8 e 22h. A concentração média de cromo nas amostras coletadas às 8 e 16h (445mg kg-1 foi semelhante à média geral de todos os horários (447mg kg-1. O grau de recuperação fecal (GR do indicador aumentou linearmente, de aproximadamente 40% para em torno de 80%, com o aumento da concentração fecal de cromo até esta última atingir um valor em torno de 250mg kg-1 de MO. Quando a concentração de cromo nas fezes foi superior a este valor o GR se manteve relativamente constante, em média 76%. A produção fecal foi superestimada pelo indicador em até 35% quando não corrigido para o GR. Quando corrigido para a recuperação fecal, as estimativas de produção fecal de MO estimadas foram similares às observadas. A excreção fecal de bovinos alimentados com azevém pode ser acuradamente estimada com o uso de baixa dosagem de óxido de cromo incorporado em uma ração peletizada concomitante à coleta de duas amostragens diárias de fezes.The aim of this research was to evaluate the use of a low level of chromium oxide (Cr2O3 incorporated into the concentrate ration to estimate faecal output (FO in cattle. Four in vivo digestibility essays were conducted using four steers with live weights of

The epidemiology of acute viral gastroenteritis in hospitalized children in Cordoba city, Argentina: an insight of disease burden Epidemiologia da gastrenterite viral aguda em crianças hospitalizadas na cidade de Córdoba, Argentina: uma percepção ao impacto da doença

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Miguel O. GIORDANO

2001-08-01

Full Text Available Information concerning the disease burden of viral gastroenteritis has important implications for the use and monitoring the impact of public health policies. The present study, carried out in Córdoba city, Argentina, documents the epidemiology of severe viral diarrhea as well as the burden of viral gastrointestinal disease in the hospital children admission. A total of 133 stools were collected from hospitalized children (Town Childhood Hospital suffering from acute diarrhea and studied for the presence of Group A rotavirus, astrovirus and adenovirus 40/41 by enzyme-immuno assay, between November 1997 and October 1998. Enteric viruses accounted for 42.1% of the total diarrheal cases analyzed. Group A rotaviruses, astroviruses, adenoviruses 40/41 and mixed infections were found in 35.3, 4.5, 1.5, and 0.8% studied specimens respectively. We estimated that 1 in 27 children in the 0-35 month-old cohort/range would be annually hospitalized for a viral gastroenteritis illness. The major impact on viral diarrhea lies on rotaviral infection, accouting for 84.0% of the viral diarrheal cases analyzed and for approximately one third of severe diarrheas requiring hospital admission in Córdoba City, Argentina.Dados a respeito do impacto das gastrenterites virais têm implicações importantes para o monitoraramento do impacto das políticas de saúde pública. O presente estudo, feito na cidade de Córdoba, Argentina, documenta a epidemiologia da diarréia viral severa como também o impacto que a mesma representa na admissão hospitalar de crianças. Pesquisou-se a presença de Rotavírus grupo A, Astrovírus e Adenovírus 40/41 por ensaio imuno-enzimático em 133 amostras de fezes obtidas durante o período de novembro de 1997 a outubro de 1998, de crianças hospitalizadas por diarréia aguda. Os virus entéricos constituíram 42,1% do total de casos de diarréia analisados. Encontraram-se Rotavírus Grupo A, Astrovírus, Adenovírus 40/41 e infec

Nuclear Activities in Argentina, 2010

International Nuclear Information System (INIS)

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

2011-01-01

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

Argentina [Country report

International Nuclear Information System (INIS)

Ferreyra, R.

2005-01-01

The airborne geophysical surveys developed in Argentina are described. They have got more than 500.000 km 2 acquiring data for U, Th, K and total background activity. Other types of published data are also mentioned (satellite imagery, seismic hazard, climate, soil distributions, etc.). The availability of maps with the abundances of elements analyzed at the country and also at laboratories from Canada is described, as well as data of analysis of several elements at two study areas proposed at the outset of the project. The availability of process rate data and epidemiological data is also explained. Argentina intended fully to participate in the CRP at the outset of the project. Due, however, to external resource constraints imposed on the participating organization (Comision Nacional de Energia Atomica, CNEA), the level of participation had to be significantly reduced. Nonetheless, in the first period of the CRP, Argentina undertook to collate existing geological and geochemical information within the country, and began to define potential areas for site specific natural systems safety indicator studies. (author)

La familia Cyatheaceae (Pteridophyta en Argentina The family Cyatheaceae (Pteridophyta in Argentina

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Gonzalo J Marquez

2010-06-01

Full Text Available La familia Cyatheaceae comprende alrededor de 500 especies de helechos arborescentes. Su distribución es pantropical y en Argentina se encuentra representada por 4 especies, reunidas en los géneros Alsophila y Cyathea: A. setosa, A. odonelliana, C. atrovirens y C. delgadii. En este trabajo se presenta una actualización de la información disponible hasta el momento referente a estas especies. Se exponen microfotografías de las esporas, que presentan la superficie con lomos en Alsophila y con cordones en Cyathea. Se ilustran los indusios y escamas de la base de los pecíolos, que son de importancia fundamental para la diferenciación de las especies estudiadas. Asimismo se presenta un mapa de distribución y una clave de las especies que crecen en Argentina.The family Cyatheaceae comprises about 500 species of tree ferns. Their distribution is pantropical and in Argentina is represented by four species, grouped in genera Alsophila y Cyathea: A. setosa, A. odonelliana, C. atrovirens and C. delgadii. In this paper, an update of the available information of the mentioned species is presented. A key to diferentiate the species growing in Argentina, their descriptions and a distribution map are also given. Spores are ridged in Alsophila and with rodlets in Cyathea. Indusia and scales of petiole basis are also illustrated.

Structure and organic matter under different soil management conditions in the center of Argentina

International Nuclear Information System (INIS)

Bricchi, E.

2004-01-01

In Central Argentina, Cordoba Province, as in different parts of the world, the equilibrium state of soil under natural condition has been modified by both the replacement of natural vegetation and by tillage. With time, these two disturbing factors have led to a new soil state whose main characteristic is an important decrease of chemical, physical and biological soil functions. The degree of these changes is directly related to soil resistance according to soil genesis. The soil organic matter and the structure of the superficial profile of soil are suitable indicators mainly for physical functions. Recently, it became necessary to look for a combination of technologies leading to an energy input throughout conservation tillage systems, soil covering and agro-chemicals which tend to improve soil quality in order to obtain a sustainable production. The removal of natural vegetation and tillage systems have caused the following effects on the first centimetres of soils: A 77 to 80% loss of organic matter during a period of about 80 years. Changes in the water stable aggregates distribution. A 77% loss of large aggregates and a 55% gain of fine aggregates. Our results would indicate that the disturbance level was higher to the natural resistance of soil. The organic carbon content in the first centimetres of soil is increased when all crop stubble remains on the field and conservationist tillage is applied. Conservation tillages are more efficient in the lower position of relief, meaning the beginning of a change of organic matter tendency that would possibly tend to new equilibrium state. On the other hand, the percentage of water stable aggregates would also be increased as consequence of a higher organic carbon content

Bioadsorción de iones de plomo y cromo procedentes de aguas residuales utilizando la cáscara de la mandarina (Citrus Reticuata Var. Clementina)

OpenAIRE

Verdugo Vergara, José Francisco

2017-01-01

El presente trabajo tiene el objetivo de evaluar la capacidad de bioadsorción de plomo y cromo mediante la cáscara de la mandarina, la cual es considerada un residuo, con esta investigación lo que se desea es aprovechar este residuo, empleándolo como bioadsorbente en el tratamiento de las aguas residuales contaminadas con metales pesados. En los procesos de bioadsorción se variaron algunos parámetros. The objective of this work assignment is to evaluate the bioadsorption capacity of lead a...

Science and nuclear technology communication in Cordoba

International Nuclear Information System (INIS)

Martin, Hugo R.

2012-01-01

This paper describes the communication activities conducted nuclear science and technology in 2012 in the scientific, educational and tourist areas of Cordoba. The first is the Promotion of the realization of scientific research school works to present in science and technology fairs. The public exhibitions fairs consist of projects conducted by students from all levels of the education system. To do this, students have the guidance of Advisory Teachers, researchers and technologists of the local scientific community, which involves training them for a period of approximately six months. During this year the courses were conducted in 37 cities in the interior province, which are the sites of Regional Headquarters, which included the promotion of the realization of school scientific research on the peaceful applications of nuclear technology and / or national nuclear activities. During the meetings, made presentations basing pedagogical and didactic aspects to coordination between teaching of conceptual content and activities practical introduction to nuclear scientific methodology. As a result of this initiative, between the months of June and September was reached more than 3,000 teachers, using the infrastructure of the Ministry of Science and Technology and Internet. As a result, a dozen schools have begun to seek assistance to develop projects related to nuclear power. Other activities under the name of Scientific School Research Incursion through Experiences with Natural Radiation, consisted of the design and realization of simple laboratory experiences in laboratory's schools. The objective was to strengthen the curriculum and promote critical thinking about the risks and benefits of nuclear technologies in relation to exposure to ionizing radiation involving them. As a result it has been observed that these activities contribute to a progressive scientific and technological literacy of students, who build original knowledge for themselves and develop

Mida õpetab Argentina finantskriis? / Karsten Staehr

Index Scriptorium Estoniae

Staehr, Karsten, 1962-

2002-01-01

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

Leak-before-break concept for evaluation of flows detected in pressure tubes in a Candu type reactor

International Nuclear Information System (INIS)

Crespi, J.C.

1992-01-01

This paper reviews the role of the Leak-Before-Break concept for evaluation of flaws detected in cold-worked Zr 2.5% Nb pressure tubes in a CANDU type reactors. The acceptance criteria are intended to prevent failure by brittle fracture, plastic collapse of the ligament and delayed hydride cracking. The methodology developed here was of great help in order to establish the operative conditions for fuel channel garter springs repositioning by means of the SLA Rette tool at Embalse Nuclear Generating Station, Cordoba, Argentina. (author)

UASB technology applied to treat industrial spills with high organic load: effluents from a factory of yeast production (Cordoba, Spain); Depuracion de vertidos organicos de alta carga: aplicacion de la tecnologia UASB al tratamiento anaerobio de las vinazas de una fabrica de levadura (Cordoba)

Energy Technology Data Exchange (ETDEWEB)

Marin Galvin, R.; Aguilar Jimenez, J. M.; Rojas Moreno, F. J.

2005-07-01

This paper deals on the yielding obtained in the exploitation of an UASB Water Treatment Plant, which is located in to the La Golondrina Wastewater Treatment Plant (Cordoba, Spain). This UASB Water Treatment Plant is focused to treat spills from yeast production with a treatment capacity of 2.100 m''3/day. From july of 1997 to may of this year, the plant has produced treated waster with 1.446 mg/l of suspended solids (influent, 2.471 mg/l), 1.449 mg/l of BOD{sub 5} (influent, 13.578 mg/l): this implies a global yielding of 70,5%. Furthermore, the UASB plant has generated 2.828 m''3/day of biogas with high quality which is later used in a co-generation system there available. (Author) 15 refs.

A journey through the skill of healing at the Historical Museum of the "Hospital Nacional de Clínicas de Córdoba - Argentina".

Science.gov (United States)

Cremades, Norma Acerbi

2009-01-01

The Museum of History "Hospital Nacional de Clínicas", from the National University of Cordoba, República Argentina, it's charged with the knowledge continuity of the Health Science, in time and space. Its guiding motto says: "I'll be a shield to stop the wind that wants to erase the imprint of men that shaped the history of the School of Medical Sciences by their work." To accomplish the tasks, general and particular objectives were settled. The Museum has a Library divided in three sections: Classical, Contemporary and Virtual. It counts with a specialized Information and Documentation Centre. Courses about different topics are given as well as the course of History of Medicine for Grade and post grade careers, completing with humanistic contents, the students education exclusively scientific and technical. For high school and Bachelor students there is a program called: "Education - Apprenticeship strategies at the Museum". These strategies are arranged to fit the programmes and levels of formal education for educational institutions. The heritage of the Museum consists of more than a thousand apparatus and tools that served the research and instruction at the different professorships of the School of Medical Sciences. Many of them obsolete they allow us to understand the evolution of science and technique, within the broad field of Health Science, since the creation of the School of Medical Sciences in 1877.

Communications received from Argentina and Brazil

International Nuclear Information System (INIS)

1989-01-01

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

Argentina

International Nuclear Information System (INIS)

2001-04-01

This economical study summarizes the energy situation of Argentina: energy institutions and policy, energy companies (oil, electricity, gas, coal), energy supplies (resources, power production, petroleum, natural gas), prices and tariffs, consumption, economical stakes and perspectives (investments, agreements, projects). Energy data for the 1971-1999 period are summarized in graphs and tables. (J.S.)

Argentina: a mature urbanization pattern.

Science.gov (United States)

Rofman, A B

1985-02-01

"This article describes the historical development of Argentina's cities, pointing out the traditional dominance of the 'centre-litoral' region and...[of] Buenos Aires. Recent trends such as the population increase in the southern region are described and demographic trends are related to economic developments. The article concludes by examining Argentina's contemporary urban patterns, including the current low rate of urbanization." excerpt

Argentina's radioactive waste disposal policy

International Nuclear Information System (INIS)

Palacios, E.

1986-01-01

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

LDC nuclear power: Argentina

International Nuclear Information System (INIS)

Tweedale, D.L.

1982-01-01

Argentina's 31-year-old nuclear research and power program makes it a Third World leader and the preeminent Latin American country. Easily accessible uranium fuels the heavy water reactor, Atucha I, which provides 10% of the country's electric power. Atucha II and III are under construction. Several domestic and international factors combined to make Argentina's program succeed, but achieving fuel-cycle independence and the capacity to divert fissionable material to military uses is a cause for some concern. 60 references

Winter Crop Mapping for Improving Crop Production Estimates in Argentina Using Moderation Resolution Satellite Imagery

Science.gov (United States)

Humber, M. L.; Copati, E.; Sanchez, A.; Sahajpal, R.; Puricelli, E.; Becker-Reshef, I.

2017-12-01

Accurate crop production data is fundamental for reducing uncertainly and volatility in the domestic and international agricultural markets. The Agricultural Estimates Department of the Buenos Aires Grain Exchange has worked since 2000 on the estimation of different crop production data. With this information, the Grain Exchange helps different actors of the agricultural chain, such as producers, traders, seed companies, market analyst, policy makers, into their day to day decision making. Since 2015/16 season, the Grain Exchange has worked on the development of a new earth observations-based method to identify winter crop planted area at a regional scale with the aim of improving crop production estimates. The objective of this new methodology is to create a reliable winter crop mask at moderate spatial resolution using Landsat-8 imagery by exploiting bi-temporal differences in the phenological stages of winter crops as compared to other landcover types. In collaboration with the University of Maryland, the map has been validated by photointerpretation of a stratified statistically random sample of independent ground truth data in the four largest producing provinces of Argentina: Buenos Aires, Cordoba, La Pampa, and Santa Fe. In situ measurements were also used to further investigate conditions in the Buenos Aires province. Preliminary results indicate that while there are some avenues for improvement, overall the classification accuracy of the cropland and non-cropland classes are sufficient to improve downstream production estimates. Continuing research will focus on improving the methodology for winter crop mapping exercises on a yearly basis as well as improving the sampling methodology to optimize collection of validation data in the future.

Operating practical experience at Argentina

International Nuclear Information System (INIS)

Quihillalt, Oscar

1997-01-01

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

Boll weevil invasion process in Argentina

Science.gov (United States)

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

Cuantificación de plomo, cadmio y cromo mediante sialoquímica Quantification of lead, cadmium and chromium through sialochemistry

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MIREYA GONZÁLEZ

1997-05-01

Full Text Available Objetivo. Determinar las concentraciones de plomo, cadmio y cromo, y establecer su posible asociación con diferentes factores sociodemográficos. Material y métodos. Se seleccionó una muestra representativa de 100 estudiantes de posgrado de la Facultad de Odontología de la Universidad Nacional Autónoma de México (UNAM, a los cuales se les colectó saliva total no estimulada. Dichas muestras fueron analizadas por espectrofotometría de absorción atómica con horno de grafito. Resultados. Metales pesados como el plomo, el cadmio y el cromo se encuentran en concentraciones mucho más altas que las informadas en la literatura: Pb, = 3.10 m g/dL-1, máxima: 16.8 my g/dL-1, y mínima: 0.04 my g/dL-1; Cd, = 0.25 my g/dL-1, máxima: 2.04 my g/dL-1, y mínima: 0.004 my g/dL-1; y Cr, = 1.43 my g/dL-1, máxima: 4.82 my g/dL-1, y mínima: 0.05 my g/dL-1. Asimismo, variables como la zona de residencia, el sexo, la edad y la ingesta de comida enlatada no influyen en los niveles de plomo y cromo. Sin embargo, en el caso del cadmio y la edad existe una asociación inversa (ji²= 5.9012, pObjective. To determine the concentration of lead (Pb, cadmium (Cd, and chromium (Cr and establish the possible association of these heavy metals with some sociodemographic factors. Material and methods. A representative sample of one hundred dental students from the National Autonomous University of Mexico living in Mexico City participated in this study. Unstimulated human whole saliva samples were analyzed by Atomic Absorption Spectroscopy. Results. Concentrations of Pb, Cd, and Cr were higher than those reported elsewhere: Pb ( or = 3.10 m g/dL-1; Maximum: 16.8 mu g/dL-1 and Minimum: 0.04 mu g/dL-1, Cd ( or = 0.25 mu g/dL-1; Maximum: 2.04 mu g/dL-1 and Minimum: 0.004 mu g/dL-1 and Cr ( or = 1.43 mu g/dL-1; Maximum: 4.82 mu g/dL-1 and Minimum: 0.05 mu g/dL-1. No association was found between the variables studied (age, sex, geographic area and canned food consumption

Resistência de união entre liga de níquel-cromo e cimentos resinosos

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FRANÇA Rodrigo de Oliveira

1998-01-01

Full Text Available O objetivo do trabalho foi a determinação da retentividade, por ensaio de tração, entre uma liga de níquel-cromo e cimentos resinosos (Comspan, Panavia Ex e All-Bond C & B, com quatro tratamentos superficiais (liso, microjateado, ataque eletrolítico e silicoater e armazenagem por 3 e 30 dias em solução de NaCl a 0,9%, a 37° C e termociclagem intercalada na segunda (a 5 e 55° C, por 1 minuto em cada banho, perfazendo 600 ciclos. Os corpos de prova eram discos, providos de alça fixadora entre si dois a dois. Os resultados permitiram concluir que: superfícies lisas conduzem a baixíssimas retentividades e tratadas com silicoater a altíssimos valores, com qualquer cimento e condição de armazenagem; Panavia Ex com superfícies microjateadas também conduz a altas retentividades; a maior retentividade foi obtida pela combinação silicoater/All-Bond C&B.

Comunidades herpetológicas de la reserva de La Quebrada, Río Ceballos, Córdoba (Argentina

Directory of Open Access Journals (Sweden)

Gavier, Gregorio

2003-11-01

Full Text Available La presente investigación se desarrolló en un ambiente característico de las sierras Chicas de Córdoba, la Reserva La Quebrada. El objetivo del estudio fue describir la composición y diversidad de la comunidad herpetofaunística, sus cambios estacionales, y estudiar si existen comunidades diferentes asociadas a los ecosistemas de pastizal, bosque y borde de arroyo. También se analizó su relación con las variables ambientales climáticas. Se instalaron de una a tres líneas de muestreo por ambiente, cada una con 15 trampas de caída separadas por una distancia de 10 m, que se revisaron mensualmente entre febrero de 1991 y mayo de 1994. Se capturaron 147 especímenes distribuidos entre 21 especies: 8 anfibios (n= 114, 8 ofidios (n= 9 y 5 saurios (n= 24. Odontophrynus occidentalis e Hyla pulchella cordobae sumaron alrededor del 60% de la abundancia total. H. p. cordobae fue la especie de distribución más amplia. Las especies más abundantes en los diferentes ambientes fueron Odontophrynus americanus y Leptodactylus gracilis en pastizal, O. occidentalis y Mabuya dorsivittata en bosque, O. occidentalis e H. p. cordobae en bordes de arroyo. Los ambientes estudiados no mostraron diferencias en cuanto a la riqueza o abundancia de individuos, pero sí en relación a la composición de las comunidades y los cambios estacionales en abundancias. La diversidad fue mayor en el pastizal (H'=1,93 con respecto al bosque (H'=1,41 y al borde de arroyo (H'=1,19. Abundancia, riqueza y diversidad para la Reserva en su conjunto correlacionaron en forma directa con temperatura y precipitación. Se comprobó la existencia de dos comunidades diferentes, una relacionada al ambiente de pastizal y otra a la unidad formada por el bosque y el borde de arroyo. Las altas tasas de deforestación registradas en el área podrían modificar las relaciones de abundancias entre especies y los patrones de biodiversidad en el área.La presente investigación se desarrolló en

Nuevas Industrias: políticas públicas y gobernanza en la industria del software y servicios informáticos. El caso de Córdoba, Argentina New Industries: public policy and governance in the Software and Informatics Services industry. The case of Córdoba, Argentina

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Natalia Berti

2012-12-01

Full Text Available La industria del software y servicios informáticos (SSI presenta un sostenido crecimiento a nivel global. En Argentina, sin embargo, es en el período posconvertibilidad cuando su desarrollo se acentúa de manera excepcional. En nuestro estudio tomamos el caso de la Provincia de Córdoba, una de las principales concentraciones SSI del interior del país caracterizada además por una sucesión de radicaciones de Empresas Transnacionales (ET. Un conjunto de estrategias políticas y empresariales como así también factores territoriales explican esta particular concentración. Nos preguntamos acerca de las estrategias del gobierno provincial y municipal en relación a la promoción de la industria en la última década. Las políticas SSI son comprendidas en dos grandes momentos: entre 2001-2006 y desde 2007 hasta 2011, momento actual. La primera etapa sienta las bases de un modelo de desarrollo para el sector, mientras que la segunda avanza hacia una consolidación de un dispositivo de regulación. El segundo período muestra una mayor complejidad en las políticas estatales a partir del intento de responder a las demandas del sector empresarial en su conjunto. A partir del análisis de legislación, artículos periodísticos y entrevistas a actores claves, se busca comprender la apuesta de los gobiernos locales hacia un sector de bienes intangibles, en un contexto de transformación de la formas de valorización del capital a escala global y regionalismo competitivo. Se exploran los procesos de gobernanza que involucran al gobierno provincial, inversores extranjeros, empresarios locales, así como otras instituciones. Estos procesos definen patrones de acción que marcan posibles estrategias y configuraciones de política industrial a futuro.The Software and Informatics Services (SIS industry shows steady growth worldwide. However in Argentina, it is in the "postconvertibility" period (2002 to present, that this sector shows an exceptional

New documentary data from the Geominero Museum (the Spanish Geological Survey, Madrid) on the archaeocyathan collection from the Ermitas Hill of Cordoba; Nuevos datos documentales sobre la coleccion de arqueociatos del Cerro de las Ermitas de Cordoba del Museo Geominero (Instituto Geologico y Minero de Espana)

Energy Technology Data Exchange (ETDEWEB)

Perejon, A.; Menendez, S.; Rabano, I.; Moreno-Eiris, E.

2014-06-01

The archaeocyathan collection of the Ermitas Hill (Cordoba) of the Geominero Museum in Madrid has recently been revised due to the discovery of some documents related to the study by one of this paper's authors of the professional life of Eduardo Hernandez-Pacheco in the National Natural History Museum archives. This documentation shows that the Ermitas Hill archaeocyathan collection now preserved in the Geominero Museum were sent by Eduardo Hernandez-Pacheco to Lucas Mallada before 1902 to be incorporated in the museum's collections and were then studied by Hernandez Sampelayo in 1933 and 1935. This fact implies that this collection is the oldest Spanish archaeocyathan collection deposited in a Spanish museum, besides clearing up the doubts about its origins and when the material was in deposited in the Geominero Museum. (Author)

Parâmetros sangüíneos de pacu Piaractus mesopotamicus (Holmberg, 1887 alimentados com dietas suplementadas com cromo trivalente em duas densidades de estocagem = Hematological parameters of pacu Piaractus mesopotamicus (Holmberg, 1887 fed diets supplemented with trivalent chromium in two stocking densities

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Rodrigo Yudi Fujimoto

2007-10-01

Full Text Available O objetivo deste trabalho foi avaliar os efeitos da suplementação com cromo trivalente (0, 6, 12 e 18 mg kg-1 de ração sobre as variáveis hematológicas de Piaractus mesopotamicus, mantidos em duas densidades de estocagem (4 e 20 kg m-3. Os mantidos na maior densidade e alimentados com dietas suplementadas com 0 e 6 mg de cromo kg-1apresentaram redução do número de linfócitos circulantes, sugerindo má adaptação a essa condição de alta densidade. Nas dietas suplementadas com 12 e 18 mg kg-1, tal efeito não foi observado, porém verificou-se aumento do número de trombócitos no tratamento com 12 mg de cromo kg-1. A inexistência de diferença significativa entre os tratamentos, aos 30 dias, sugere a adaptação dos peixes ao tipo de alimento e à situação de alta densidade. Portanto, nas condições deste ensaio, a suplementação com 12 e 18 mg de cromo kg-1 é interessante como estratégia alimentar durante 15 dias.This work evaluated the effects of chromium supplementation on thehematological parameters of Piaractus mesopotamicus Holmberg, 1887 maintained in two stocking densities. Fish were fed diets supplemented with 0, 6, 12 and 18 mg trivalent chromium kg-1 dry ration and maintained at 4 and 20 kg m-3. The fish under high stockingdensity and fed diets supplemented with 0 and 6 mg kg-1 showed reduction in the number lymphocytes, which suggests non-adaptation to this condition of high density. This was not observed in fish fed diets supplemented with 12 and 18 mg chromium kg-1, but an increasein the number of thrombocytes was evident. The lack of difference between treatments after 30 days may suggest a possible adaptation of fish to the situation. It can be added that supplementation with 12 and 18 mg chromium kg-1 is an interesting feeding strategy for aperiod of 15 days.

Utilización de ceniza volante y catalizador fcc gastado en la recuperación de cromo (iii) de los efluentes líquidos de las curtiembres

OpenAIRE

Amaya, Jeceny; Tristancho, Andrés; Sánchez Castellanos, Francisco José

2010-01-01

El presente trabajo estudia la posibilidad de utilizar dos desechos sólidos industriales: la ceniza volante de TERMOPAIPA y el catalizador de equilibrio gastado (FCC) de ECOPETROL, en la remoción y recuperación de cromo de los efluentes líquidos de las curtiembres. La ceniza volante se sometió a dos tratamientos hidrotérmicos alcalinos para obtener estructuras zeolíticas de mejores propiedades, y el catalizador gastado se calcinó para eliminar el coque de su superficie. La caracterización de ...

EVALUACIÓN Y REGULACIÓN DE PARÁMETROS EN UN EQUIPO DISEÑADO PARA LA DISMINUCIÓN DE CROMO(VI), PROVENIENTES DE LA INDUSTRIA DE RECUBRIMIENTOS GALVÁNICOS

OpenAIRE

Acosta Niño, Gema Eunice; Bourdón García, Alejandro; Coy Barrera, Carlos Andrés

2013-01-01

RESUMEN Con el fin de generar los medios necesarios para poder llevar a cabo las pruebas de remoción de cromo(VI) en aguas residuales de la industria galvánica, se realizó la captura de datos a partir de prototipo de equipo inicial a escala de laboratorio para conseguir el objetivo principal, disminuir la cantidad de metales en aguas residuales contaminadas con diferentes metales. Es así que con los datos obtenidos en el presente estudio se plantearon algunas modificaciones necesarias para me...

EVALUACIÓN Y REGULACIÓN DE PARÁMETROS EN UN EQUIPO DISEÑADO PARA LA DISMINUCIÓN DE CROMO(VI), PROVENIENTES DE LA INDUSTRIA DE RECUBRIMIENTOS GALVÁNICOS

OpenAIRE

Gema Eunice Acosta Niño; Alejandro Bourdón García; Carlos Andrés Coy Barrera

2013-01-01

Con el fin de generar los medios necesarios para poder llevar a cabo las pruebas de remoción de cromo(VI) en aguas residuales de la industria galvánica, se realizó la captura de datos a partir de prototipo de equipo inicial a escala de laboratorio para conseguir el objetivo principal, disminuir la cantidad de metales en aguas residuales contaminadas con diferentes metales. Es así que con los datos obtenidos en el presente estudio se plantearon algunas modificaciones necesarias para mejorar la...

Argentina

International Nuclear Information System (INIS)

Masters, R.

1997-01-01

This article provides information on the energy resources, government, electricity supply, nuclear industry and fuel cycle of Argentina. About 12% of electric power produced is generated from nuclear power plants. The operating capacity, history and partial privatisation of the nuclear industry are covered, and fuel cycle facilities described. These include uranium mining and processing, enrichment, fuel fabrication and heavy water production. (UK)

Status report about the works for the start up of the RA-0 'zero power' nuclear reactor at the Cordoba National University

International Nuclear Information System (INIS)

Martin, H.R; Carballido, C.; Oliveras, T.

1991-01-01

After two years of works at the Cordoba National University for the new start-up of the RA-0 'zero power' nuclear reactor, the results obtained are herein presented. Starting with practically null infrastructure at the beginning, specially in human resources and instrumentation of the reactor, the objectives can be considered satisfactory. The training in work of the future operational staff, the design and the construction of the instrumentation and the fitting of the installations are the principal items described in this paper. An special attention is devoted to the insertion of this type of installation in the university organization, usually not prepared for the quality and control activities, which is necessarily considered in these type of works. (Author) [es

Diccionario del español de Argentina

OpenAIRE

Haensch, Günther

2000-01-01

Diccionario del español de Argentina : español de Argentina - español de España / Günther Haensch ; Reinhold Werner. Madrid : Gredos, 2000. - LI, 729 S. - (Diccionarios contrastivos del español de América)

Argentina

International Nuclear Information System (INIS)

Anon.

1992-01-01

This paper reports that like so many other countries, Argentina is in the throes of privatization and restructuring of its economic programs. This has had a direct effect on the LPG industry. Argentina is a country with many natural resources. However, natural gas and crude, while present, are not in abundance. Imports of these and their associated products are needed to satisfy the growing need of the population from time to time. This is especially true with LPGs. Production of the fuel averages about 1 million tons, not enough to satisfy internal needs in the winter but enough to permit some exports in the summer to nearby Brazil. The Country's Congress approved a plan to sell-off or lease parts of the natural gas distribution network and other businesses of Gas del Estado. Subsequent new legislation has called for ten new natural gas distribution zones. Included in the sell-off is the company's propane distribution division. What is left of Gas del Estado and YPF will become a corporation in the true sense of the word. Stocks in YPF are to be sold to the public

EL CULTIVO URBANO DE PLANTAS MEDICINALES, SU COMERCIALIZACIÓN Y USOS EITOTERAPEUTICOS EN LA CIUDAD DE RÍO CUARTO, PROVINCIA DE CORDOBA, ARGENTINA

Directory of Open Access Journals (Sweden)

ISABEL MARIA MADALENO

2012-01-01

Full Text Available América Latina posee rica flora nativa a la que Se agregan especies introducidas de variado Origen, mayormente europeas por fuerza de las olas de colonización y de inmigración. Hace trece años que el Instituto de Investigaciones Tropicales de Portugal busca evaluar el peso de los aportes culturales de distintos grupos étnicos en los consumos de la herbolaria nativa y exótica, con aplicación terapéutica a enfermedades crónicas y pequeñas afecciones de la salud. En el verano de 2011 se realizó la investigación conjunta con la Universidad Nacional de Río Cuarto, provincia de Córdoba, Argentina. El muestreo consistió en un centenar de entrevistas semiestructuradas dirigidas a tres grupos de informantes: el primer grupo estaba conformado por ochenta cultivadores urbanos, el segundo por diecisiete comerciantes formales e informales, y el último por tres curanderos y fitoterapeutas. Se registró un total de ciento veinte plantas, de las cuales el cuarenta y seis por ciento son americanas, resultó impactante la diversidad de especies identificadas, como así también la variedad de procedencias. La salud es un derecho de todos y en la actualidad, con los problemas de escasos ingresos económicos, la población busca alternativas que le permitan mitigar la imposibilidad de acceso a la medicina convencional.

Equilibrios de óxido-reducción. Variación del potencial de un par con el pH. Reacción entre el par dicromato-cromo y yodo-yoduro. Problema interactivo.

OpenAIRE

Milla González, Miguel

2015-01-01

El potencial redox de los oxoaniones oxidantes varía en función de la concentración de protones del medio. Eso le ocurre al par dicromato-cromo(III). Sin embargo, el potencial del par yodo-yoduro es formalmente independiente del pH. En este ejercicio es necesario calcular el pH para el que la reacción entre ambos pares no va teóricamente en ningún sentido.

Conflictos socioambientales: identificación y representación espacial. Estudio de caso en la ciudad de Río Cuarto (Argentina

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Galfioni, María de los Angeles

2013-12-01

Full Text Available In the city of Rio Cuarto (Cordoba Province, Argentina today warns that the process of urban sprawl generates, on one hand, the inclusion of land uses that previously were located in the periphery, and secondly, the encounter with activities related to suburban or rural area (agricultural, industrial, commercial faced with those from urban areas, thus increasing the field of socio-environmental conflicts. This situation forces the scientific field to generate knowledge for use in the making of decisions by the State that is who must reconcile conflicting interests and ensure sustainable development. Because it conflicts with a strong territorial implications, addressing them is a mapping from updated and consistent with the objectives. The aim of this paper is to develop a systematic, characterization and subsequent mapping of environmental social unrest in the city of Rio Cuarto in a GIS environment. To link it then with the expansion of the urban built environment.En la ciudad de Río Cuarto (provincia de Córdoba, Argentina se advierte en la actualidad que el proceso de expansión urbana genera, por un lado, la inclusión de usos de suelo que con anterioridad se localizaban en la periferia, y por otro, el encuentro con actividades vinculadas al ámbito periurbano o rural (agrícola, industrial, comercial que confrontan con aquellas del ámbito urbano, aumentando de esta manera el campo de conflictos socio ambientales. Esta situación, obliga al ámbito científico a generar conocimientos que sirvan para la toma de decisiones por parte del Estado, que debe conciliar intereses contrapuestos y asegurar un desarrollo sostenible. Por tratarse de conflictos con una fuerte implicancia territorial, el abordaje de los mismos se hace a partir de una cartografía actualizada y acorde a los objetivos propuestos. El objetivo del presente artículo es elaborar una sistematización, caracterización y posterior cartografía de conflictividad socio ambiental

The health crisis in Argentina.

Science.gov (United States)

Escudero, José Carlos

2003-01-01

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

Novedades en la Distribución de las Cyatheaceae (Pteridophyta en Argentina Novelties in the distribution of Cyatheaceae (Pteridophyta of Argentina

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Gonzalo J. Marquez

2006-12-01

Full Text Available Cyathea atrovirens (Langsd. & Fisch. Domin se cita por primera vez para la provincia de Corrientes (Argentina. De esta manera se extiende su área de distribución hacia el sudoeste. Además se confirma la presencia de Alsophila odonelliana (Alston M. Lehnert en la provincia de Jujuy (Argentina. En este estudio los caracteres de las esporas resultaron diagnósticos para la determinación genérica de los taxa.Cyathea atrovirens (Langsd. & Fisch. Domin is reported for the first time for Corrientes province (Argentina. Thus, its area of distribution is extended southwest. The presence of Alsophila odonelliana (Alston M. Lehnert is confirmed for Jujuy province (Argentina. In this study the spore features were diagnostic in order to determine these taxa.

Mejora de la tenacidad de un acero de ultraalto contenido en carbono nnediante unión por laminación con un acero al cromo y molibdeno

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Pozuelo, M.

2005-12-01

Full Text Available Laminated composite materials containing five layers of ultrahigh carbon steel, 1.35%C, and five layers of a Cr-Mo steel were processed by roll bonding. The rolling procedure improves the bonding of layers and refines the microstructure, diminishing grain size and removing the pearlitic zones. Charpy impact tests were carried out to evaluate the impact properties. Toughness of the laminated composite was highly improved respect to the ultrahigh carbon steel. Moreover, it was double than that of the Cr-Mo steel in the arrester orientation. These results reveal the important role of the interfaces in the mechanical properties of the composite materials.

Se procesaron mediante unión por laminación, dos materiales compuestos laminados de 10 capas: cinco capas de un acero de ultraalto contenido en carbono con 1,35 % C, alternadas con otras cinco de un acero al cromo y molibdeno. La laminación en caliente consolida la unión entre las capas y afina la microestructura, reduciendo el tamaño de grano y eliminando las zonas de perlita presentes inicialmente. Se realizaron ensayos de impacto Charpy para evaluar su resistencia al impacto. El material compuesto laminado mejoró sustancialmente la tenacidad del acero de ultraalto carbono, además de duplicar la resiliencia del acero al cromo y molibdeno en la orientación "en serie". Estos resultados ponen de manifiesto la importancia de las intercaras en las propiedades mecánicas de los materiales compuestos.

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

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Lisandro Héctor Luis-Negrete

2011-03-01

Full Text Available The blue land planarian Caenoplana coerulea is reported from Argentina (Buenos Aires province. We found C. coerulea in the east central region of Argentina in anthropic environments. The specimens that we found have the characteristic of the species found in others regions; that is, a bluish dorsal surface with a yellow mid-dorsal stripe and eyes forming a single row around the anterior tip, clustered laterally. This is the first record of this species from the Neotropical Region, and together with Bipalium kewense are the only 2 species of exotic terrestrial planarians so far recorded in Argentina.La planaria terrestre azul Caenoplana coerulea se registra para el centro este de Argentina (provincia de Buenos Aires, en ambientes antropizados. Los ejemplares encontrados presentan las características de la especie registrada en otras regiones, con una superficie dorsal azulada y una hilera medio dorsal amarilla, y ojos formando una hilera alrededor del extremo anterior, agrupados lateralmente. Es la primera vez que se cita dicha especie en la Región Neotropical, y junto a Bipalium kewense son las únicas planarias terrestres exóticas registradas en Argentina.

de la sociedad argentina

Directory of Open Access Journals (Sweden)

Diego Galeano

2007-01-01

Full Text Available Este artículo trata sobre un período de la historia argentina en el cual la "mirada médica", a través de un grupo de prestigiosos intelectuales, se convirtió en una clave de interpretación de la sociedad argentina. El análisis gira en torno a la obra de uno de los médicos higienistas más influyentes, José María Ramos Mejía, deteniéndose especialmente en su libro más famoso: Las multitudes argentinas (1899. La hipótesis principal que recorre el texto es la siguiente: la medicalización de la sociedad, acentuada luego de las epidemias de cólera y fiebre amarilla de mediados del siglo XIX, ofreció a las elites públicas la posibilidad de construir dominios legítimos de intervención estatal. Intromisiones del Estado en la vida privada que, además de ser algo resistidas por la población, entraban en tensión con los principios teóricos del liberalismo que los propios miembros de la elite defendían.

Argentina

Energy Technology Data Exchange (ETDEWEB)

1999-09-01

This report presents a brief overview of the socio-economic, energy and environmental context in which climate change mitigation actions in Argentina shall be inserted. To that end, the dynamic of the Argentine economic development, its influence on the energy system and environmental impacts is summarised. From the environmental standpoint, emphasis shall only be made on the impact of economic development patterns and energy policies on GHG emission. (au) 73 refs.

The removal of toxic metals from liquid effluents by ion exchange resins. Part IV: Chromium(III)/H+ /Lewatit SP112; La eliminación de metales tóxicos presentes en efluentes líquidos mediante resinas de cambio iónico. Parte IV: cromo(III)/H+/Lewatit SP112

Energy Technology Data Exchange (ETDEWEB)

Alguacil, F.J.

2017-09-01

This investigation presented results on the removal of chromium(III), from aqueous solution in the 0-5 pH range, using Lewatit SP112 cationic exchange resin. Several aspects affecting the ion exchange process were evaluated, including: the influence of the stirring speed, temperature, pH of the solution, resin dosage and aqueous ionic strength. The selectivity of the system was tested against the presence of other metals in the aqueous solution, whereas the removal of chromium(III) from solutions was compared with results obtained using multiwalled carbon nanotubes as adsorbents. From the batch experimental data, best fit of the results is obtained with the Langmuir model, whereas the ion exchange process is best explained by the pseudo-second order model, moreover, experimental data responded well to the film-diffusion controlled model. Elution of the chromium(III) loaded into the resin is well accomplished by the use of sodium hydroxide solutions. [Spanish] En este trabajo se presentan los resultados obtenidos en la eliminación de cromo(III) de disoluciones acuosas (pH 0-5) mediante la resina de intercambio catiónico Lewatit SP112. Se han investigado algunas variables que pueden afectar al sistema: influencia de la agitación, temperatura, pH y fuerza iónica del medio acuoso y cantidad de resina; también se ha investigado acerca de la selectividad del sistema cuando otros metales están presentes en el medio acuoso, comparándose los resultados de la eliminación del cromo(III) usando la resina con los resultados obtenidos cuando se emplea otro adsorbente como son los nanotubos de carbono de pared múltiple. Los resultados experimentales indican que la carga del cromo(III) en la resina responde mejor al modelo de Langmuir, mientras que los modelos cinéticos indican que la carga del metal en la resina responde al modelo de pseudo-segundo orden y difusión en la capa límite. La elución del cromo(III) se realiza con disoluciones de hidróxid.

Crisis cambiaria en Argentina

OpenAIRE

Féliz, Mariano

2009-01-01

El análisis de la articulación entre el proceso de valorización exitosa de capital y la tendencia a la desvalorización de las mercancías se aplica a una de las manifestaciones de la crisis argentina: la devaluación del peso. Se estudia la relación entre la determinación del tipo de cambio y la valorización del capital. Se discuten las tendencias concretas de la economía argentina en la década de 1990 y se muestra cómo la devaluación de 2001-2002 fue producto necesario del propio proceso de va...

Desempenho de um filme livre de cromo na proteção contra a corrosão de ligas de alumínio 2024.

OpenAIRE

Mayra Rúbia Silva Castro

2001-01-01

Este trabalho propõe o uso de um filme preparado a partir de solução aquosa alcalina contendo íons de lítio, borato e alumínio, no sentido de inibir a corrosão de ligas de alumínio de uso aeronáutico, buscando sempre comparações com filmes de sais de cromo, atualmente utilizados. Os filmes foram obtidos por dip coating (5 minutos) e por polarização anódica (5 e 45 minutos) de ligas de alumínio 2024-T3 na solução aquosa alcalina contendo íons de lítio, borato e alumínio. Foram feitas micrograf...

New documentary data from the Geominero Museum (the Spanish Geological Survey, Madrid) on the archaeocyathan collection from the Ermitas Hill of Cordoba

International Nuclear Information System (INIS)

Perejon, A.; Menendez, S.; Rabano, I.; Moreno-Eiris, E.

2014-01-01

The archaeocyathan collection of the Ermitas Hill (Cordoba) of the Geominero Museum in Madrid has recently been revised due to the discovery of some documents related to the study by one of this paper's authors of the professional life of Eduardo Hernandez-Pacheco in the National Natural History Museum archives. This documentation shows that the Ermitas Hill archaeocyathan collection now preserved in the Geominero Museum were sent by Eduardo Hernandez-Pacheco to Lucas Mallada before 1902 to be incorporated in the museum's collections and were then studied by Hernandez Sampelayo in 1933 and 1935. This fact implies that this collection is the oldest Spanish archaeocyathan collection deposited in a Spanish museum, besides clearing up the doubts about its origins and when the material was in deposited in the Geominero Museum. (Author)

DESVALIMIENTO PSIQUICO Y VIOLENCIA FAMILIAR EN DOS AREAS DE CORDOBA. ARGENTINA

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Martha Beatriz Melo

2010-01-01

Full Text Available Este trabajo intenta explorar las relaciones entre lo que denominamos «desvalimiento psíquico individual y familiar» y las posibilidades de enfrentar con éxito situaciones de violencia familiar Dicho concepto alude a factores de riesgo que afectan el normal desarrollo de la personalidad, generando un estado de indefensión psíquica que se reproduce, muchas veces, de generación en generación Se establecieron relaciones entre indicadores de vulnerabilidad social: capital humano, material y social. Particularmente este último se relaciona de manera directa con la posibilidad de modificar situaciones adversas tales como la violencia familiar. La investigación fue realizada en el sur de Córdoba Capital en dos zonas altamente vulnerables desde el punto de vista de los escasos recursos materiales y humanos pero con diferentes niveles de capital social. En este contexto y previo analizar los aportes de otras investigaciones realizadas, se pondera el capital social de las zonas analizadas y se lo relaciona con las posibilidades de una comunidad de enfrentar exitosamente problemas de violencia familiar.

Epidemiologic study of bronchopulmonary mycosis in the province of cordoba, argentina

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Diana T. Masih

1987-02-01

Full Text Available An epidemiological study for histoplasmosis coccidioidomycosis and cryptococcosis made in five areas of the province of Córdoba is presented. The data obtained showed a global positivity of 41.1% for histoplasmin 26.7% for coccidioidin and 14.1% for cryptococcin. In some areas, the Rio III basin and Traslasierra, the histoplasmosis infection indexes were much higher, 53,3% and 73.1% respectively. The index of positive skin tests with Cryptococcus antigen in Traslasierra was also very high: 31.9%.

Control of nuclear materials and materials in Argentina

International Nuclear Information System (INIS)

Arbor G, A.; Fernandes M, S.

1988-01-01

A general view about the safeguards activities in Argentina is presented. The national system of accounting for and control of nuclear materials is described. The safeguards agreement signed by Argentina are presented. (E.G.) [pt

Argentina to fully privatize state owned YPF

International Nuclear Information System (INIS)

Anon.

1992-01-01

Argentina's Congress has voted to fully privatize state petroleum company Yacimientos Petroliferos Fiscales (YPF), a move the government expects to net at least $8 billion. Despite some political opposition, the vote was 119-10 in favor, with one abstention and opposition party members refusing to participate in the vote. Argentina's President Carlos Menem had threatened to authorize YPF privatization by decree if there was no quorum for a vote. YPF is responsible for 40% of Argentina's oil production. The country h as been self-sufficient in crude since 1982. Current production is 563,472 b/d, and proved reserves of oil and gas are valued at $7 billion

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.)

Measurements of atmospheric fallout in Argentina; Determinacion del fallout atmosferico en la Republica Argentina

Energy Technology Data Exchange (ETDEWEB)

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

1998-11-01

With the purpose of studying the radioactive fallout present in Argentina from atmospheric nuclear explosions tests that have been conducted recently, an environmental monitoring program, outside the influence of nuclear facilities of Argentina, was undertaken during 1996 and 1997. The levels of Cs-137 and Sr-90 were analysed in samples of air, deposited material (rainwater), milk, an average meal of a standard man and food. During this period, a total of 630 radiochemical analysis were performed on 325 samples of the different matrices described. The concentration levels of the radionuclides analysed in the different environmental matrices are presented and are compared with the values obtained in the environmental monitoring program done during the period 1960-1981. (author) 3 refs., 9 tabs. [Espanol] Con el proposito de estudiar la precipitacion radiactiva presente en la Republica Argentina, debido al ensayo de armas nucleares en la atmosfera realizadas en el pasado, se implemento el muestreo ambiental fuera de la zona de influencia de las instalaciones nucleares de la Argentina durante los anios 1996 y 1997. Se determinaron las concentraciones de cesio 137 y estroncio 90 en muestras de aire, deposito de material radiactivo (agua de lluvia), leche, dieta promedio de un individuo estandar y en alimentos varios. Se realizaron, durante el periodo mencionado, un total de 630 determinaciones radioquimicas sobre 325 muestras de las diferentes matrices mencionadas. Se presentan los niveles de concentracion de los radionucleidos analizados en las distintas matrices ambientales y se comparan los valores obtenidos en los monitoreos realizados durante el periodo 1960-1981. (autor)

Safety regulation of geological disposal of radioactive waste: progress since Cordoba and remaining challenges

International Nuclear Information System (INIS)

Duncan, A.; Pescatore, C.

2010-01-01

Claudio Pescatore, Deputy Division Head (NEA) presented a paper, the purpose of which was to recall where we stood at the time of the Cordoba Workshop (1997) on the regulation of disposal of long-lived radioactive waste, to review developments since then, to present the key existing issues, and reflect on the remaining challenges and possible responses. The overview study on progress in regulation for geological disposal since the Cordoba workshop [NEA/RWMC/RF(2008)6], provides a good list of references regarding the first two issues. The presentation of the existing issues takes advantage of the synthesis of the responses to a questionnaire completed by the regulatory organisations in preparation for this workshop. It warns regulators and implementers that international work to date seems to have created an expectation in the mind of the public and in some organisations that nothing less than a guarantee by the regulator is needed of maintaining current levels of protection of both individuals and populations practically forever, regardless of the impracticality of this. This expectation needs to be replaced with a carefully and clearly explained understanding of the choices involved in dealing with long-lived radioactive waste against a background of our responsibilities to both current and future generations and our practical capacity to deliver them. Concerning the current major challenges faced in regulation, the paper comes back to the issue of the 'guarantee' by the regulator and it observes that there is no doubt that there is a willingness to do the best to comply with the principle of protection and that we are broadly convinced that current concepts for geological disposal, supported by multiple lines of reasoning and application of best available techniques (BAT) will meet that principle. However, we do not have the capacity to prove or guarantee this, nor do we believe that it is possible in practice. Although we are advised that it is neither

¿Catedrales de las ciencias o templos del saber? Los museos de ciencias naturales de Córdoba, Argentina, a fines del siglo XIX Cathedrals to sciences or temples of knowledge? The museums of natural sciences of Cordoba, Argentina, by the end of the 19th century

Directory of Open Access Journals (Sweden)

Luis Tognetti

2001-06-01

Full Text Available Los museos de Botánica, Mineralogía y Zoología de la Facultad de Ciencias Físico-Matemáticas se formaron en el marco de un fenómeno de alcance mundial, definido por ciertos autores como 'museum movement', durante un período en el cual los fundamentos de ese movimiento se encontraban en un proceso de reelaboración. En este sentido, el propósito del trabajo es analizar la etapa constitutiva de los museos de historia natural en un espacio periférico - Córdoba a fines del siglo XIX - con el fin de conocer parcialmente ese proceso de transición. La estrategia definida puso a las colecciones en el centro del análisis para saber cómo se formaron y con qué finalidad. También se abordaron otros dos aspectos de relevancia: la dotación de recursos humanos y de fondos para esas instituciones.The museums of Botany, Mineralogy and Zoology of the Facultad de Ciencias Físico-Matemáticas were created along with a world wide phenomenon, defined by some authors as the "museum movement," in a time the basics of this movement were being restructured. Thus, this work intends to go over the building stage of the natural history museums in a peripheral domain - Cordoba by the end of the 19th century - in order to partially understand this transition process. The strategy is to analyze the collections and find out how and why they were gathered. Two other aspects are also relevant: the human resources and the funds these institutions were granted.

The regulatory control of radioactive sources in Argentina

International Nuclear Information System (INIS)

Rojkind, Roberto Hector

1997-01-01

Argentina has been conducting nuclear activities for more than forty years, and as early as in 1956 established a Regulatory Authority. Procedures for compliance monitoring and enforcement have been in use in the regulatory control of radioactive sources, and regulatory standards and regulations had been set in Argentina, before the accident in Goiania. The conclusions drawn from that accident encouraged in Argentina the improvement of some regulatory procedures and helped to enhance the quality of the regulatory process. Therefore, the effectiveness of the control of spent radioactive sources has gradually increased, and enforcement actions to prevent radioactive sources ending up in the public domain improved. Some lessons learned in Argentina from the accident in Goiania and the main characteristics of an effective enforcement program helpful to prevent radiological accidents in industrial, medical, research and teaching uses of radioactive sources are presented. (author)

Biossorção de níquel e cromo de um efluente de galvanoplastia utilizando alga marinha pré-tratada em coluna - DOI: 10.4025/actascitechnol.v31i2.864

Directory of Open Access Journals (Sweden)

Márcia Teresinha Veit

2009-06-01

Full Text Available Este trabalho teve por objetivo o estudo da biossorção dos íons cromo e níquel presentes no efluente do processo de uma indústria de galvanoplastia, utilizando como biossorvente a biomassa de alga marinha pré-tratada Sargassum filipendula. As condições de operação da coluna foram: massa de biossorvente de 8 g, pH do efluente de alimentação 3,85, temperatura de 30ºC, vazão de 6 mL min.-1 e concentrações iniciais de alimentação (cromo+níquel de 7,12 e 3,66 meq L-1. Foi empregado um modelo matemático para representar a dinâmica da biossorção em coluna de leito fixo. O modelo da isoterma multicomponente de Langmuir (qm= 2,78 meq g-1, bCr = 0,85 L meq-1, bNi = 0,08 L meq-1 foi utilizado para representar os dados de equilíbrio da coluna e para simular a dinâmica de biossorção dos íons. Os resultados da simulação demonstraram que o modelo matemático empregado foi capaz de descrever satisfatoriamente a complexa dinâmica de biossorção dos íons presentes no efluente.

Problems of implementing a large contract abroad: the Cordoba nuclear power station

International Nuclear Information System (INIS)

Caruso, P.

1984-01-01

The building of Argentina's second nuclear power station proved to be a true test of project-management skills: the contract was to be a joint effort between an Italian and a Canadian company, to be implemented in a country thousands of miles away; the Argentinian government changed four times during the course of the project; and the local currency was always unstable and unpredictable. The various difficulties that arose, and how they were solved, are described, and the role of the project management is evaluated. (author)

Gravimetric study on the western edge of the Rio de La Plata craton

International Nuclear Information System (INIS)

Rame, G; Miro, R

2010-01-01

This work is about the gravimetric study on the western edge of the Rio de la Plata craton which belongs to the Gondwana fragment in the south of Brazil, Uruguay and central eastern of Argentina. The work consisted of a survey of 332 gravimetric and topographic stations extended from the western edge of the Sierra Chica de Cordoba up to 200 km east on the pampas. The gravity values observed (gobs) were obtained using a LaCoste §Rom berg gravimeter G-961 and 200T Sodin both with 0.01 mGal, referred to IGSN71 (International Gravity Standardization Net 1971) network

Pensar los des-bordes mediáticos del conflicto: las ciudades-barrios como síntoma de la actual tendencia urbana de socio-segregación

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María Eugenia Boito

2012-01-01

Full Text Available This paper aims to describe the media discourse surrounding the conflict associated with various planning decisions taken by the provincial and municipal state of the city of Cordoba (Argentina, through successive administrations during the first decade of the century. From an interpretative approach on the implementation of a housing program called 'My house, my life', we propose to account for other movements that involve a strongly segregationist state intervention in connection with the private sector on urban weave: the process is presented from an 'non-conflictive' perspective by one of the most important media in the state.

Evaluation code for the dose due to the discharges of liquid effluents of the Embalse nuclear power plant

International Nuclear Information System (INIS)

Lopez, Fabio O.; Boutet, Luis I.; Bruno, Hector A.; Gavini, Ricardo M.

2004-01-01

A new methodology is presented to assess the evaluation of the radiological impact to the population, due to the discharges to the environment of liquids effluents of Central Nuclear Embalse (CNE), located in the Province of Cordoba (Argentina). In order to carry out the dose evaluation, a code denominated EDDELIQ was developed, in this code the calculation of the radionuclides concentration in the water lake is made by means of a simple physical model of the type of complete mixture. The physical model is solved numerically by means of Runge Kutta method of second order. (author)

Primer registro de Vespula vulgaris (Hymenoptera: Vespidae en la Argentina First record of Vespula vulgaris (Hymenoptera: Vespidae in Argentina

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Maité Masciocchi

2010-12-01

Full Text Available Vespula vulgaris (Linnaeus es un véspido social nativo de la región Holártica. En este trabajo reportamos la primera detección de esta especie en Argentina. Obreras de esta avispa fueron capturadas cerca de la ciudad de San Carlos de Bariloche (Argentina en Febrero de 2010, mientras se tomaban muestras de otra avispa invasora, Vespula germanica (Fabricius o chaqueta amarilla, de morfología externa y hábitos similares a la anteriormente mencionada. Además, detallamos algunos caracteres de identificación y características biológicas.Vespula vulgaris (Linnaeus is a social vespid native to the Holarctic region. The first detection of this species in Argentina is here reported. Workers were captured close to San Carlos de Bariloche (Argentina during February 2010, while sampling for another successful invader, the German wasp or Yellowjacket, Vespula germanica (Fabricius. Both these wasp species are very similar morphologically and share a number of common habits. Also, some identification features and biological characters are here explained.

Unemployment Assistance and Transition to Employment in Argentina

NARCIS (Netherlands)

A. Iturriza (Ana); A.S. Bedi (Arjun Singh); R.A. Sparrow (Robert)

2007-01-01

textabstractIn 2001-02, Argentina experienced a wrenching economic crisis. Plan Jefes, implemented in May 2002, was Argentina's institutional response to the increases in unemployment and poverty triggered by the crisis. The program provided a social safety net and appears to have successfully

Tabaquismo durante el embarazo en Argentina y Uruguay Smoking during pregnancy in Argentina and Uruguay

Directory of Open Access Journals (Sweden)

Fernando Althabe

2008-02-01

Full Text Available Argentina y Uruguay están entre los países con mayor proporción de mujeres jóvenes fumadoras. Se desconoce cuál es la proporción exacta de ellas que fuman durante el embarazo así como las características de las que dejan de fumar y las que continúan fumando durante el embarazo. Realizamos una encuesta administrada por un/a entrevistador/a a 1512 mujeres embarazadas de 18 años o mayores (796 en Argentina; 716 en Uruguay, que concurrían a control prenatal en hospitales públicos de grandes conglomerados urbanos. 44% de las mujeres en Argentina y 53% en Uruguay habían sido o eran fumadoras. Durante el embarazo, 11% de las mujeres en Argentina y 18% en Uruguay continuaron fumando. En ambos países, la proporción de mujeres que vive con fumadores, permite fumar en el hogar y regularmente o siempre se encuentra en lugares cerrados con personas que estén fumando fue 49%, 46% y 20% entre las mujeres que nunca fumaron, 67%, 60% y 32% entre las que dejaron, y 78%, 75% y 52% entre las que continuaron fumando respectivamente. El estudio confirma un importante problema de salud pública y documenta que la exposición ambiental persiste en subgrupos de mujeres, aun en aquéllas que dejaron de fumar. Es importante que el sector de salud pública provea acceso a programas efectivos para dejar de fumar durante el embarazo. Cualquier nueva intervención a desarrollar que intente tener un éxito al menos moderado y sostenible, debiera incluir componentes que actúen sobre el entorno fumador de la mujer embarazada que fuma.Argentina and Uruguay are among the countries in which a large proportion of young women smoke. The rate of smokers during pregnancy in both countries is not well known, and data on the characteristics of women who quit smoking during pregnancy compared to those who continue smoking are not available. We conducted a survey including 1512 pregnant women >18 years old (796 in Argentina; 716 in Uruguay, during antenatal visits in

The bloodsucking biting midges of Argentina (Diptera: Ceratopogonidae

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Gustavo R Spinelli

2005-04-01

Full Text Available A key is presented for the identification of the adults of 54 species of bloodsucking ceratopogonids, 51 of which are known inhabitants of Argentina, and Culicoides uruguayensis Ronderos, C. pifanoi Ortiz, and C. trilineatus Fox, which are known to occur in bordering Uruguay and Paraguay. Wing photographs are provided of females of the 45 species of Culicoides. Three new species of Culicoides Latreille from Northeastern Argentina are described and illustrated: C. austroparaensis Spinelli, C. bachmanni Spinelli, and C. williamsi Spinelli. The following six species are recorded for the first time from Argentina and/or bordering localities in Paraguay: Leptoconops brasiliensis (Lutz, C. gabaldoni Ortiz, C. ginesi Ortiz, C. pifanoi Ortiz, C. pseudocrescentis Tavares and Luna Dias, and C. trilineatus; and C. estevezae Ronderos and Spinelli is newly recorded from Misiones province of Argentina. C. lopesi Barretto is excluded from the Argentinean ceratopogonid fauna.

Nuevas citas de Coleoptera acuáticos y Megaloptera para la provincia de Chubut (Argentina New records of aquatic Coleoptera and Megaloptera from Chubut province (Argentina

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Miguel Archangelsky

2004-12-01

Full Text Available Se informa acerca de nuevos hallazgos de coleópteros acuáticos, de Dytiscidae, Gyrinidae, Hydrophilidae y Elmidae para la provincia de Chubut (Argentina. También se cita por primera vez a las Sialidae (Megaloptera, género Protosialis Weele, para la República Argentina.New records of aquatic Coleoptera, in the families Dytiscidae, Gyrinidae, Hydrophilidae and Elmidae, are reported for the Chubut province (Argentina. The Sialidae (Megaloptera, genus Protosialis Weele, is reported for the first time in Argentina.

Regional polyphase deformation of the Eastern Sierras Pampeanas (Argentina Andean foreland): strengths and weaknesses of paleostress inversion

Science.gov (United States)

Traforti, Anna; Zampieri, Dario; Massironi, Matteo; Viola, Giulio; Alvarado, Patricia; Di Toro, Giulio

2016-04-01

The Eastern Sierras Pampeanas of central Argentina are composed of a series of basement-cored ranges, located in the Andean foreland c. 600 km east of the Andean Cordillera. Although uplift of the ranges is partly attributed to the regional Neogene evolution (Ramos et al. 2002), many questions remain as to the timing and style of deformation. In fact, the Eastern Sierras Pampeanas show compelling evidence of a long lasting brittle history (spanning the Early Carboniferous to Present time), characterised by several deformation events reflecting different tectonic regimes. Each deformation phase resulted in further strain increments accommodated by reactivation of inherited structures and rheological anisotropies (Martino 2003). In the framework of such a polyphase brittle tectonic evolution affecting highly anisotropic basement rocks, the application of paleostress inversion methods, though powerful, suffers from some shortcomings, such as the likely heterogeneous character of fault slip datasets and the possible reactivation of even highly misoriented structures, and thus requires careful analysis. The challenge is to gather sufficient fault-slip data, to develop a proper understanding of the regional evolution. This is done by the identification of internally consistent fault and fracture subsets (associated to distinct stress states on the basis of their geometric and kinematic compatibility) in order to generate a chronologically-constrained evolutionary conceptual model. Based on large fault-slip datasets collected in the Sierras de Cordoba (Eastern Sierras Pampeanas), reduced stress tensors have been generated and interpreted as part of an evolutionary model by considering the obtained results against: (i) existing K-Ar illite ages of fault gouges in the study area (Bense et al. 2013), (ii) the nature and orientation of pre-existing anisotropies and (iii) the present-day stress field due to the convergence of the Nazca and South America plates (main shortening

EVALUACIÓN DE LA CINÉTICA DE LA ACUMULACIÓN DE CROMO EN EL BUCHÓN DE AGUA (Eichhornia crassipes AVALIAÇÃO DA CINÉTICA DE ACUMULAÇÃO DE CROMO EM JACINTO DE AGUA (Eichhornia crassipes EVALUATION OF THE KINETICS OF ACCUMULATION OF CHROMIUM IN WATER HYACINTH (Eichhornia crassipes

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RICARDO BENÍTEZ

2011-12-01

Full Text Available Eichhornia crassipes es una planta de rápido crecimiento distribuida en casi todos los países tropicales, que puede tolerar condiciones de contaminación por metales o por eutrificación de cuerpos de aguas lénticos y lóticos. Esta planta se ha convertido en un problema ambiental; no obstante, ha despertado interés en el tratamiento de la contaminación por metales en suelos agrarios y cuerpos de agua. La toxicidad de los metales es un serio inconveniente en esta motivación, ya que influye en la capacidad de acumulación y la transmisión en la cadena trófica. En esta investigación se evaluó el comportamiento de las tasas de acumulación de cromo en la macrófita acuática Eichhornia crassipes, a concentraciones de 30, 60 y 90 mg/L, utilizando un diseño experimental aleatorio, con control y tres repeticiones por nivel. Los estudios llevados a cabo en acuarios de vidrio, evidenciaron sitios de acumulación de cromo en la planta, estableciéndose la cinética de acumulación.Eichhornia crassipes é uma planta de rápido crescimento distribuídas em quase todos os países tropicais, que podem tolerar condições de contaminação por metáis ou de eutrofização das massas de águas lênticos e lóticos. Essa planta tornou-se um problema ambiental, no entanto, despertou o interesse no tratamento da poluição por metais em solos agrícolas e corpos d'água. A toxicidade dos metais é um problema serio com esse raciocínio, uma vez que afeta a capacidade de armazenamento e transmissão na cadeia alimentar. Neste estudo avaliou o comportamento das taxas de acúmulo de cromo em macrófitas aquáticas Eichhornia crassipes, em concentrações de 30, 60 e 90 mg/L, utilizando um delineamento inteiramente casualizado, com controle e três repetições por nível. Estudos realizados em aquários de vidro, apresentaram sítios de acumulação de crómio na planta, que institui a cinética de acumulação.Eichhornia crassipes is a fast growing plant

Horizontalidad, autogestión y protagonismo en Argentina

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Marina Sitrin

2010-02-01

Full Text Available Este artículo trata los movimientos sociales autónomos que surgieron después de la crisis económica y la posterior rebelión popular en Argentina en diciembre de 2001. Los movimientos autónomos en la Argentina, como tantos movimientos en el mundo de hoy, son movimientos basados en la creación de nuevas relaciones sociales y comunidades ahora, al mismo tiempo que proyectan nuevas sociedadesy las relaciones en y para el futuro. Son movimientos con una concepción diferente del tiempo y el espacio. Son movimientos queentienden lo individual y lo colectivo como vinculados entre sí. Hay mucho en común entre la experiencia en la Argentina y las prácticas eideas anarquistas. Eso no significa que los que están creando nuevas relaciones y comunidades en la Argentina sean anarquistas. Lo que este artículo intenta hacer es basarse en las experiencias de los movimientos sociales argentinos para iniciar una reflexión sobre lasprácticas e ideas que los anarquistas pueden prestar a los distintos movimientos y comunidades autónomas; y, a su vez, sobre lo que los movimientos autónomos en la Argentina puede dar a las ideas y prácticas anarquistas.

Avaliação da fundibilidade de uma liga de cobalto-cromo

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CARREIRO Adriana da Fonte Porto

1999-01-01

Full Text Available Neste trabalho propusemo-nos a avaliar a fundibilidade de uma liga de cobalto-cromo (VERA-PDI em função da utilização de três revestimentos: Knebel (aglutinado por sílica, Termocast e Wirovest (aglutinados por fosfato e duas temperaturas de aquecimento para o molde (900°C e 950°C. Para a execução do teste foi utilizado o método descrito por HINMAN et al.9 (1985. O método de fundição foi o de cera perdida sob chama de gás-oxigênio. Os dados obtidos foram submetidos a análise estatística e demonstraram não haver diferença estatisticamente significante para os revestimentos Knebel e Wirovest, e diferença estatisticamente significante ao nível de 0,1% para o revestimento Termocast quando da variação da temperatura de aquecimento do molde. Quando analisamos os revestimentos sob temperatura do molde de 900°C verificamos diferença estatisticamente significante entre Knebel e Termocast e Knebel e Wirovest ao nível de 0,1%, e diferença entre Termocast e Wirovest ao nível de 5%. Para a temperatura de 950°C houve diferença estatisticamente significante ao nível de 0,1% entre todos os revestimentos. Dentro dos parâmetros utilizados neste estudo pudemos concluir que, para a liga VERA-PDI, a utilização do revestimento Knebel e temperatura de aquecimento do molde de 950°C proporcionaram melhores resultados quanto à fundibilidade.

The regulatory control of radioactive sources in Argentina

Energy Technology Data Exchange (ETDEWEB)

Rojkind, Roberto Hector [Autoridade Regulatoria Nuclear, Buenos Aires (Argentina)

1997-12-31

Argentina has been conducting nuclear activities for more than forty years, and as early as in 1956 established a Regulatory Authority. Procedures for compliance monitoring and enforcement have been in use in the regulatory control of radioactive sources, and regulatory standards and regulations had been set in Argentina, before the accident in Goiania. The conclusions drawn from that accident encouraged in Argentina the improvement of some regulatory procedures and helped to enhance the quality of the regulatory process. Therefore, the effectiveness of the control of spent radioactive sources has gradually increased, and enforcement actions to prevent radioactive sources ending up in the public domain improved. Some lessons learned in Argentina from the accident in Goiania and the main characteristics of an effective enforcement program helpful to prevent radiological accidents in industrial, medical, research and teaching uses of radioactive sources are presented. (author) 9 refs; e-mail: rrojkind at sede.arn.gov.br

Control of gaseous emissions in central Costanera S.A. of Argentina; Control de emisiones gaseosas en central Costanera S. A. de Argentina

Energy Technology Data Exchange (ETDEWEB)

Brabenec, Edgardo [Unidad de Negocios Central Costanera, S. A., (Argentina)

1997-12-31

A description is presented of the equipment utilized at the Central Costanera, S.A. of Argentina, the requirements and the Environmental Management established for this Power Station, and the Standards and the resolutions and law instruments on Environmental issues. Also it is presented the Environmental Management plan of the Ente Nacional Regulador de Electricidad of Argentina as well as the controls and environmental corrective actions implemented at the Central Costanera, S.A. [Espanol] Se presenta una descripcion del equipo utilizado en la Central Costanera S.A. de Argentina, los requerimientos de gestion ambiental establecidos para esta central y las normas, resoluciones e instrumentos juridicos en materia ambiental. Se presenta ademas el plan de gestion ambiental del Ente Nacional Regulador de la Electricidad de Argentina asi como los controles y acciones correctivas ambientales implantadas en la Central Costanera S. A.

Control of gaseous emissions in central Costanera S.A. of Argentina; Control de emisiones gaseosas en central Costanera S. A. de Argentina

Energy Technology Data Exchange (ETDEWEB)

Brabenec, Edgardo [Unidad de Negocios Central Costanera, S. A., (Argentina)

1996-12-31

A description is presented of the equipment utilized at the Central Costanera, S.A. of Argentina, the requirements and the Environmental Management established for this Power Station, and the Standards and the resolutions and law instruments on Environmental issues. Also it is presented the Environmental Management plan of the Ente Nacional Regulador de Electricidad of Argentina as well as the controls and environmental corrective actions implemented at the Central Costanera, S.A. [Espanol] Se presenta una descripcion del equipo utilizado en la Central Costanera S.A. de Argentina, los requerimientos de gestion ambiental establecidos para esta central y las normas, resoluciones e instrumentos juridicos en materia ambiental. Se presenta ademas el plan de gestion ambiental del Ente Nacional Regulador de la Electricidad de Argentina asi como los controles y acciones correctivas ambientales implantadas en la Central Costanera S. A.

Prospect for Development of Open Access in Argentina

Science.gov (United States)

Miguel, Sandra; Bongiovani, Paola C.; Gomez, Nancy D.; Bueno-de-la-Fuente, Gema

2013-01-01

This perspective article presents an overview of the Open Access movement in Argentina, from a global and regional (Latin American) context. The article describes the evolution and current state of initiatives by examining two principal approaches to Open Access in Argentina: "golden" and "green roads". The article will then…

Economy-wide impacts of biofuels in Argentina

International Nuclear Information System (INIS)

Timilsina, Govinda R.; Chisari, Omar O.; Romero, Carlos A.

2013-01-01

Argentina is one of the world's largest biodiesel producers and the largest exporter, using soybeans as feedstock. Using a computable general equilibrium model that explicitly represents the biofuel industry, this study carries out several simulations on two sets of issues: (i) international markets for biofuel and feedstock, such as an increase in prices of soybean, soybean oil, and biodiesel, and (ii) domestic policies related to biofuels, such as an introduction of biofuel mandates. Both sets of issues can have important consequences to the Argentinean economy. The simulations indicate that increases in international prices of biofuels and feedstocks would increase Argentina's gross domestic product and social welfare. Increases in international prices of ethanol and corn also can benefit Argentina, but to a lesser extent. The domestic mandates for biofuels, however, would cause small losses in economic output and social welfare because they divert part of biodiesel and feedstock from exports to lower-return domestic consumption. An increase in the export tax on either feedstock or biodiesel also would lead to a reduction in gross domestic product and social welfare, although government revenue would rise. - Highlights: ► Argentina is one of the largest biodiesel producer and exporter using soybeans. ► Economy-wide impacts are assessed using a CGE model for Argentina. ► Policies simulated are feedstock and biodiesel price change, and domestic mandates. ► Increases in international prices of biofuels and feedstock benefit the country. ► Domestic mandates for biofuels cause small losses in economic output

Efeitos da suplementação de cromo (Cr) sobre o dempenho produtivo, a população de protozoários e resposta imunitária em ovinos

OpenAIRE

Dallago, Bruno Stéfano Lima

2008-01-01

O presente trabalho foi desenvolvido com objetivo de determinar a influência da suplementação de cromo (Cr) dietético sobre o desempenho produtivo, população de protozoários ruminais e resposta imunitária em ovinos. O delineamento experimental foi inteiramente casualizado com quatro tratamentos e seis repetições. Para tanto foram utilizados 24 ovinos inteiros da raça Santa Inês com peso vivo médio inicial de 22,89 ± 2,23 kg e idade aproximada de três meses e 15 dias distribuídos em quatro tra...

Tareas que realizan los bibliotecarios universitarios en Argentina

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Werner Agazzi

2011-08-01

Full Text Available El presente estudio es una investigación descriptiva que pretende conocer las tareas que realizan los bibliotecarios en las bibliotecas universitarias argentinas, abordando el tema desde la perspectiva de las competencias laborales y el actual perfil del bibliotecario universitario. Mediante la utilización de un cuestionario enviado a las direcciones de e-mail de bibliotecas universitarias argentinas se compilaron datos sobre las tareas que realizan los bibliotecarios en esas instituciones. A través de este proceso también se compilaron datos relacionados con las tareas de comunicación vía e-mail por parte de las bibliotecas universitarias argentinas.

Effect of a healthcare gender gap on progression of HIV/AIDS defined by clinical-biological criteria among adults from Cordoba City (Argentina from 1995 to 2005 Condicionamiento de la evolución del VIH/sida definida por criterios clínico-biológicos en adultos de la ciudad de Córdoba (Argentina, de 1995 a 2005, por la brecha sanitaria existente entre ambos sexos

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Elio A. Soria

2010-06-01

Full Text Available Objective: To establish the influence of clinical status at diagnosis and of gender on progression of HIV/AIDS determined by clinical-biological factors in patients from Cordoba City (Argentina from 1995 to 2005. Methods: Gender and clinical and laboratory data were evaluated by descriptive statistics, non-parametric survival analysis, and generalized linear models at the beginning of the study (diagnosis and at the end (hospital records, n=209. Results: At diagnosis, women (n=28, 13.4% had a higher probability of being asymptomatic than men (n=181, 86.6%. High viremia was associated with advanced clinical stages, but was inversely related to CD4 count. Truncated Kaplan-Meier curves were similar for both sexes. The probability of not having AIDS criteria at the end of the study was higher in patients without these criteria at diagnosis. Women had a higher probability of having AIDS at the end of the follow-up than men. In contrast, men had a higher prevalence of venereal diseases (n=38, 21%, dysmetabolic profile (n=14, 7.7% and positive serology for opportunists (n=31, 17.1%. Marker diseases were mainly represented by internal mycosis and waste syndrome, although less specific findings (anemia, oral lesions were also associated with progression. Conclusions: Using an integrative approach, high viremia was critically linked to clinical and lymphocyte impairment. Early diagnosis was a major determinant of clinical course, with women having a worse prognosis. However, men were diagnosed in clinically advanced stages and with other non-HIV-related entities, which could affect progression. These findings should be integrated into the planning of preventive strategies.Objetivos: Establecer la influencia de la condición médica al diagnóstico y del sexo en la evolución del VIH/Sida determinada por factores clínico-biológicos en pacientes de la ciudad de Córdoba (Argentina, 1995-2005. Métodos: El sexo, los datos clínicos y los de laboratorio

Computing and Education in Argentina, Uruguay and Paraguay.

Science.gov (United States)

Sadowsky, Manuel

Although the report is specifically about Argentina, Uruguay and Paraguay, the considerations presented are valid for all of Latin America. In September, 1969, Argentina had approximately 200 electronic computers. The annual growth is estimated at 15-20% and the implementation of teleprocessing and time-sharing systems have made evident the…

The nuclear research centre at Bariloche, Argentina

International Nuclear Information System (INIS)

Abriata, J.P.

2001-01-01

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

The energy sector in Argentina

International Nuclear Information System (INIS)

2016-01-01

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

Nuclear safeguards in Brazil and Argentina: 25 years of ABACC

Science.gov (United States)

Kassenova, Togzhan

2017-11-01

As possessors of advanced nuclear technology, Brazil and Argentina bear special responsibility for helping the international community and neighbors in their region feel confident that their nuclear programs are peaceful, secure, and safe. Over the past 25 years, the Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials (ABACC) has played an indispensable role in strengthening such confidence by implementing nuclear safeguards in the two countries. Today, ABACC carries out safeguards inspections at a total of 76 nuclear facilities in Brazil and Argentina. This article describes how Brazil and Argentina view trends in the global nonproliferation regime and international nuclear safeguards, and explains how these trends relate to unique challenges and opportunities facing Brazil, Argentina, and ABACC.

Communications received from Argentina and Brazil

International Nuclear Information System (INIS)

1988-05-01

The document reproduces the Joint Declaration on Nuclear Policy signed by the Presidents of Argentina and Brazil on 30 November 1985, the Protocol on Nuclear Co-operation between Argentina and Brazil signed on 10 December 1986, the Joint Declaration on Nuclear Policy signed by the two Presidents on 10 December 1986, the Joint Declaration on Nuclear Policy signed by the two Presidents on 17 July 1987 and the Joint Declaration on Nuclear Policy (IPERO Declaration) signed by the two Presidents on 8 April 1988

Brasil, Argentina e América do Sul

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Paulo Nogueira Batista Jr.

2005-12-01

Full Text Available ESTE trabalho discute alguns aspectos da evolução econômica recente do Brasil, da Argentina e de outros países da América do Sul. Tendências econômicas e intelectuais perigosas, tais como a "globalização", o chamado Consenso de Washington, a dolarização e as negociações da Alca (Área de Livre Comércio das Américas, perderam ímpeto e a América do Sul está se movendo gradualmente na direção de um posicionamento mais independente na condução das suas política econômicas e internacionais. As mudanças foram muito mais significativas na Argentina do que no Brasil e isso se tornou fonte de alguma tensão entre os dois principais países sul-americanos. Não obstante, uma aliança estratégica entre Argentina e Brasil continua sendo a pedra angular da integração da América do Sul.THIS PAPER discusses some aspects of the recent economic evolution of Brazil, Argentina and other South American countries. Dangerous economic and intellectual trends, such as "globalization", the so-called Washington Consensus, dollarization, and FTAA (Free Trade Area of the Americas negotiations, have lost momentum and South America is moving gradually towards a more independent stance in the conduct of its economic and foreign policies. Changes have been much more significant in Argentina than in Brazil and this has become a source of some tension between the two major South American countries. Nevertheless, a strategic alliance between Argentina and Brazil remains the corner stone of South American integration.

LAS ESPECIES DE MUHLENBERGIA (POACEAE: CHLORIDOIDEAE DE ARGENTINA

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Peterson Paul

2011-06-01

Full Text Available Se presenta un estudio taxonómico de las especies nativas argentinas del géneroMuhlenbergia, basado en el análisis de los especímenes depositados en 48 herbarios.Se analizan diversos aspectos relativos a la clasifi cación, la nomenclatura y lavariación morfológica de los caracteres. Muhlenbergia está representado enArgentina por 18 especies nativas. Se proporcionan claves para reconocer lasespecies presentes en el país, así como también descripciones de éstas, sinónimos,ilustraciones, distribución geográfica y algunos comentarios morfológicos yecológicos. Muhlenbergia breviaristata (Hack. Parodi y Muhlenbergia holwayorumHitchc., se reducen como sinónimos del híbrido Muhlenbergia angustata (J. PreslKunth × M. rigida (Kunth Kunth. Muhlenbergia diversiglumis Trin. se cita porprimera vez para la Argentina. Por otra parte, las especies Muhlenbergia tenella(Kunth Trin. y Muhlenbergia tenuissima (J. Presl Kunth se excluyen de la fl orade Argentina.

[Psychometric validation in Spanish of the Brazilian short version of the Primary Care Assessment Tools-users questionnaire for the evaluation of the orientation of health systems towards primary care].

Science.gov (United States)

Vázquez Peña, Fernando; Harzheim, Erno; Terrasa, Sergio; Berra, Silvina

2017-02-01

To validate the Brazilian short version of the PCAT for adult patients in Spanish. Analysis of secondary data from studies made to validate the extended version of the PCAT questionnaire. City of Córdoba, Argentina. Primary health care. The sample consisted of 46% of parents, whose children were enrolled in secondary education in three institutes in the city of Cordoba, and the remaining 54% were adult users of the National University of Cordoba Health Insurance. Pearson's correlation coefficient comparing the extended and short versions. Goodness-of-fit indices in confirmatory factor analysis, composite reliability, average variance extracted, and Cronbach's alpha values, in order to assess the construct validity and the reliability of the short version. The values of Pearson's correlation coefficient between this short version and the long version were high .818 (Pmedia extracted: .3306, since 3 variables had weak factorials loads. The Cronbach's alpha was acceptable (.85). The short version of the PCAT-users developed in Brazil showed an acceptable psychometric performance in Spanish as a quick assessment tool, in a comparative study with the extended version. Copyright © 2016 Elsevier España, S.L.U. All rights reserved.

Biodiversity information system of the national parks administration of Argentina

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Leonidas Lizarraga

2014-06-01

Full Text Available Introduction The Biodiversity Information System (BIS of the National Parks Administration of Argentina (NPA was launched in 2002, with the support of the Global Environmental Fund (GEF through the Biodiversity Conservation Project in Argentina. The BIS consists of a set of thematic databases and Geographic Information System (GIS set to support management decisions, and to provide information to the general public on the national protected areas of Argentina. Currently, the BIS-NPA progr...

Update on women in physics in Argentina

Science.gov (United States)

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

2013-03-01

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

Transnational Crime Fictions and Argentina's Criminal State

OpenAIRE

Caballero, Juan

2013-01-01

My dissertation, titled "Transnational Crime Fictions and Argentina's Criminal State," proposes a new understanding of the dictatorship novels of Ricardo Piglia, Juan José Saer, and Manuel Puig grounded in their shared appropriation from popular crime fiction. Across the 1940's, 50's, and 60's, a wide range of popular crime fiction was translated, written, theorized, printed and reprinted in Argentina, and these popular genres grew steadily in readership, visibility, and cultural legitimacy....

China, Argentina agree to further strategic ties

Institute of Scientific and Technical Information of China (English)

2011-01-01

According to Xinhua,China and Argentina have agreed to further enhance mutual trust and their strategic partnership as the two emerging economies are playing an increasingly important role in the world arena.“China will work with Argentina to strengthen strategic mutual trust,expand cooperation and coordination within multilateral frameworks in order to promote bilateral ties and benefit the two peoples,” Vice President Xi Jinping told Argentine Foreign Minister Hector Timerman on September 9.

Determinación de cromo hexavalente sobre el crecimiento de Selenastrum capricornutum

Directory of Open Access Journals (Sweden)

Giovanna Lida Arboleda Díaz

2002-01-01

Full Text Available Sobre cultivos de Selenastrum capricornutum, se ensayaron algunas condiciones ambientales,como iluminación (continua y fotoperíodo, agitación (continua y manual y nutricionalescomo la relación nitrógeno y fósforo (N:P, 50:1 y 25:1 en el medio de cultivo. (En este casosobre el medio sugerido por la EPA (1994. La finalidad de estos experimentos era la de de-terminar y escoger las condiciones con las cuales se habría de trabajar en el laboratorio, tantopara el mantenimiento y propagación del cultivo como para la realización de pruebas de toxici-dad de Selenastrum capricornutumcon Cromo hexavalente (Cr+6 . Fue evidente que cada uno delos factores tuvo un efecto directo sobre el crecimiento, sin embargo en la selección de lascondiciones se debió tener en cuenta que los resultados fueron una suma de factores queinteractuaban de manera simultánea en el tiempo sobre los cultivos. Finalmente, los análisisllevaron a la selección de las condiciones de iluminación continua, con una intensidad de 4000Lux, agitación continua a 100 rpm y la relación N:P en el medio de cultivo de 50:1. Una vezfueron establecidas las condiciones con las que se debía trabajar en el laboratorio se procedióa realizar los ensayos de toxicidad, se determinó la CI50-72h (concentración inhibitoria cin-cuenta a las setenta y dos horas de Selenastrum capricornutumcon Cr+6, obteniendo la cartacontrol, y cuyo valor al tóxico de referencia fue de 0.127mg/l, con un coeficiente de variaciónde 18.6%, y con un intervalo de sensibilidad de 0.080-0.174mg/l.

All projects related to Argentina | Page 7 | IDRC - International ...

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

Region: Americas, Argentina, South America. Program: Climate Change. Total Funding: CA$ 995,000.00. Youth Smoking in Stressed Environments : Determinants and Resiliency (Argentina, Colombia, Palestine). Project. Numerous studies have shown that the earlier an individual starts smoking, the harder it is to give it up.

Nuclear Energy Stakeholders in Argentina

International Nuclear Information System (INIS)

Gadano, Julian

2017-01-01

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

Argentina set for privatization

International Nuclear Information System (INIS)

Chynoweth, E.

1992-01-01

Buyers are lining up for Argentina's two big state-controlled petrochemical groups, Buenos Aires-based Petroquimica General Mosconi (PGM) and Petroquimica Bahia Blance (PBB). However, feedstock supply contracts with government-owned oil group Yacientos Petroliferos Fiscales (YPG) and gas group Gas del Estado hold the key to both sales. Shell Compania Argentina Petroleo SA (CAPSA), Perez Companc, and Global Petroleum have already bought PGM tender documentation. Shell says it will bid for PGM if the feedstock contract with YPF is acceptable. In addition to price and volume, Shell says the length is critical; it wants a 15-year deal, but would settle for 11. YPF initially sought a five-year contract. PGM, which produces 300,000 m.t./year of aromatics, plus oxo alcohols, methanol, and methyl tert-butyl ether, has sales of $150 million/year

Biocalcarenites as construction materials in Santa Marina de Aguas Santas Church at Cordoba, Spain

Directory of Open Access Journals (Sweden)

Meroño, J. E.

2009-03-01

Full Text Available This study consisted in characterizing the materials used to build Santa Marina de Aguas Santas Church at Cordoba and locating the original quarries. The techniques used in the lithological and chemical characterization included XRD, petrographic microscopy and electron dispersive scanning microscopy. The chemical index of weathering (CIW was used to quantify the state of stone decay. The lithology and different types of alterations observed were mapped. A comparison of the material on the building to ancient quarries identified “Naranjo” as the possible site where the stone was originally quarried.Para la caracterización litológica y determinación del grado de alteración de los materiales pétreos se han empleado las siguientes técnicas: difracción de rayos X (método del polvo, microscopía petrográfica (sobre lámina delgada y microscopía de barrido con EDS (energía dispersiva de rayos X, para determinar la composición química. El estado de degradación del material pétreo se ha cuantificado a partir del índice químico de alteración (CIW. Se han realizado cartografías sobre la fachada oeste: a de las litologías presentes y b de los diferentes tipos de alteración observados. La comparación de muestras del edificio con las de antiguas canteras ha permitido identificar la del Naranjo como la posible cantera de origen.

Environmental zoning of a forest Pacific reserve zone located in Cordoba department, colombian Caribe

International Nuclear Information System (INIS)

Henao Sarmiento, Jesus Eugenio; Cardenas Torres, Miguel Andres; Fajardo Patino, Alirio

2008-01-01

This work includes the completion of a proposed zoning of the Zona de Reserva Forestal del Pacifico (ZRFP) in jurisdiction of the department of Cordoba, which has allowed to establish the managing trends of the natural resources that have been implemented in the municipalities of Tierralta and Valencia, where the uses of the territory have opposite characteristics with the reason of being of these lands, that were originally mainly forest areas and reserves for providing useful wood resources, as well as protective areas, that might reach in the growth of the economy of the country. The offers of zoning use of the soils by vocation and occupation proposed by the Instituto Geografico Agustin Codazzi IGAC (2002) were analyzed in detail; these are the technical foundation for the subtractions, according to the Law 2 of 1959. The work of biotic characterization focuses in the forest refuges that shelter great biodiversity wealth for the region and the department. The results of the characterization and evaluation show that there is a significant deterioration of ecosystems and ecological communities of the territory because of multiple actions performed by man along history, which, besides exploiting the environmental offer, contravene in some extensions the natural vocation of the soils. Therefore, it's important to put in consideration that given the intensity of the width and lengthwise interventions realized in the ZRFP, nowadays only some areas of natural forest remain, especially in the buffer area of the Paramillo National Park and in mountain areas bordering the department of Antioquia, which demands immediate actions of preservation and restoration.

ESTUDIO EXPLORATORIO DE LAS CARACTERÍSTICAS PSICOMÉTRICAS DEL PORTRAIT VALUES QUESTIONNAIRE EN EL CONTEXTO DE CÓRDOBA – ARGENTINA/ EXPLORATORY STUDY OF THE PSYCHOMETRIC CHARACTERISTICS OF THE PORTRAIT VALUES QUESTIONNAIRE IN CORDOBA, ARGENTINA/ ESTUDO EXPLORATÓRIO DAS CARACTERÍSTICAS PSICOMÉTRICAS DO PORTRAIT VALUES QUESTIONNAIRE NO CONTEXTO DE CÓRDOBA – ARGENTINA

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Débora Imhoff

2013-06-01

Full Text Available El estudio analizó algunas propiedades psicométricas del Portrait Values Questionnaire, instrumento de medición de valores humanos en su versión de 21 ítems (Schwartz & Rubel-Lifschitz, 2009, en una muestra no aleatoria de 419 ciudadanos cordobeses (Argentina, con una media de edad de 34.81 y una desviación típica de 10.16. Para evaluar la evidencia de estructura y de consistencia interna se realizó un análisis factorial exploratorio y se estimó el coeficiente alfa de Cronbach, respectivamente. Los resultados indican que el instrumento presenta buenos niveles de confiabilidad en las tres dimensiones: conservación, apertura al cambio y autopromoción (α=.68 a α=.71. Sin embargo, la estructura teórica propuesta por el autor se ratifica parcialmente.

The other immigration to Argentina: the case of Adolf Eichmann

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Christian Cwik

2014-01-01

Full Text Available Adolf Eichmann llegó a la Argentina como otros 500 Nazis forajidos a través de una red de traficantes ilegales de migrantes entre 1945 y 1955. Esta red fue el resuldado del interés de la República de Argentina, la Cruz Roja, la Caritas y el Vaticano por un lado y por el otro los delincuentes. Eichmann la cara de la ‘banalidad del mal’, como Hannah Arendt escribió en su libro “Eichmann en Jerusalén: un estudio sobre la banalidad del mal”(2ª. edición, traducción de Carlos Ribalta, Barcelona, Lumen, 1999 tuvo bastantes problemas para integrarse en la sociedad argentina y por ende, fracasó. Adolf Eichmann nacido en 1906 en Solingen/Alemania personificó un caractér típico de la sociedad en la posguerra austriaca-alemana, lo que hizo que fracasara en su vida laboral varias veces durante los veintes y los inicios de los treinta del siglo XX.Palabras Clave: Adolf Eichmann;  Holocausto; Tráfico Ilegal de Migrantes; Inmigración en Argentina; Peronismo; Tribunales Internacionales. La otra inmigración a Argentina: El caso de Adolf EichmannAbstractAdolf Eichmann arrived to Argentina along with other 500 runaway Nazis thorugh a smuggling network between 1945 and 1955. This network was the result of the interest shown by the The Republic of Argentina, the Red Cross, Caritas and the Vatican in one hand; in the other, the criminals of war. Eichmann, the face of Hanna Arendt’s t “Banality of Evil” had numerous troubles to integrate to argentinian society, failing as a result.Adolf Eichmann, born in 1906 in Solingen, Germany, personified a typical Austrian-german postwar character, a fact that conduced to his laboral failure in the twentys and early thirties of the twentieth century.Keywords:Adolf Eichmann; Holocaust; Nazi Criminals; Trafficking of migrants; Post War Period; Immigration to Argentina; Peronism; Mossad; International Tribunal. 

El IDRC en Argentina

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

comercio capaces de sostener el crecimiento y reducir la pobreza. ... Rosario, en Argentina, se ha convertido en un ejemplo internacional para la agricultura urbana gracias a la ... para evaluar los riesgos y beneficios de esta tecnología para ...

Activities with Argentina

International Nuclear Information System (INIS)

1999-01-01

In 1989, the US Department of Energy (DOE) responded to the need to redirect resources from weapons production to environmental restoration and waste management by establishing the Office of Environmental Management (EM) and delegated to this office the responsibility of cleaning up the US nuclear weapons complex. Now in its eight year, EM's mission has three central facets: (1) to assess, remediate, and monitor contaminated sites and facilities; (2) to store, treat, and dispose of waste from past and current operations; and (3) to develop and implement innovative technologies for environmental cleanup. To this end, EM has established domestic and international cooperative technology development programs, including one with the Republic of Argentina. Cooperating with Argentine scientific institutes and industries meets US cleanup objectives by: (1) identifying and accessing Argentine EM-related technologies, thereby leveraging investments and providing cost-savings; (2) improving access to technical information, scientific expertise, and technologies applicable to EM needs; and (3) fostering the development of innovative environmental technologies by increasing US private sector opportunities in Argentina in EM-related areas

Erosion taken place in mountainous regions by effect of the forest fires; Erosion producida en las regiones montanosas por efecto de los incendios forestales

Energy Technology Data Exchange (ETDEWEB)

Carignano, Claudio A; Cioccale, Marcela A

1992-07-01

This paper presents the first part of an investigation about the effect of the fire in the forest in a basin, which is a hydric reserve and supplies with potable water to a big region of Sierras Chicas, in the province of Cordoba, Argentina. The combination of the unprotected soil, by the lack of vegetation due to the fire, the climate conditions, the gradient and the lithology produce an increase over the processes of erosion. Different thematic maps were necessary join all the information, to determine the relation between the fires affected areas and the erosion processes, besides the regional climate conditions were considered as a fundamental factor.

Moessbauer spectroscopy of some volcanic glasses from the Pampa Region, Cordoba, Argentina

International Nuclear Information System (INIS)

Saragovi-Badler, C.; Labenski, F.

1987-01-01

Moessbauer spectroscopy was applied to the study of volcanic glasses and closely associated clay minerals which were carefully separated from the sediments of the Pampa Region. The parameters of volcanic glass samples show the presence of a high content of Fe 2+ in octahedral coordination and some Fe 3+ in tetrahedral and octahedral coordination. No remarcable difference was found comparing with a 'pure' volcanic glass sample taken as a reference. In the clay samples the only clay mineral found was illite. (author) 7 refs

Vacuna contra la fiebre hemorrágica argentina Candid#1 producida en la Argentina: Inmunogenicidad y seguridad

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Delia A. Enria

2010-06-01

Full Text Available Se realizó un estudio clínico en 946 voluntarios humanos sanos, donde se comparó la vacuna Candid#1 producida en Argentina con la elaborada en EE.UU., que había sido utilizada en estudios previos. Como objetivo primario se evaluó la equivalencia en la eficacia utilizando como marcador subrogante a la inmunogenicidad medida por detección de anticuerpos neutralizantes. Como objetivo secundario se evaluó la equivalencia en inocuidad comparando las tasas de reacciones adversas. Ambas vacunas mostraron una tasa equivalente de inmunogenicidad ligeramente superior al 95.5%, que es la eficacia estimada para Candid #1 en estudios previos. No se observaron eventos adversos graves relacionados con la vacuna. Los eventos adversos generales considerados relacionados fueron de escasa significación clínica y de resolución espontánea o con tratamiento sintomático; se presentaron en los receptores de ambas vacunas en tasas equivalentes (29.9% para la vacuna fabricada en la Argentina y 35.0% para la fabricada en EE.UU., e incluyeron: cefalea, decaimiento, mialgias, plaquetopenia leve (< 150 000 plaquetas/mm³, náuseas y/o vómitos, leucopenia leve (< 4 000 blancos/mm³, fiebre, dolor retroocular, mareos, microhematuria, lumbalgia y exantema. Estos resultados indican que la vacuna Candid #1 elaborada en la Argentina es equivalente a la elaborada en los EE.UU. Este estudio permitió el registro del biológico producido en la Argentina ante la autoridad regulatoria del país (ANMAT.

A Argentina depois da conversibilidade: um caso de novo-desenvolvimentismo?

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André Moreira Cunha

2009-03-01

Full Text Available This paper analyses the economic recovery in post-Convertibility Argentina. We try to identify if there are evidences to support the suggestion that Argentina could be an example of the so-called "new developmentalism".

Overview and perspectives for Open Access development in Argentina

Directory of Open Access Journals (Sweden)

Sandra Miguel

2013-04-01

Full Text Available This paper provides an overview and perspectives for development of the Open Access movement in Argentina, within the global and regional (Latin American context. It outlines the evolution and current state of initiatives around the two main approaches to Open Access, the golden and green roads. The main Open Access policies and support of OA movement by governments in Latin American region, and particularly in Argentina, are highlighted, while recent studies on publishing practices and authors’ positions regarding Open Access are presented. The paper concludes that the prospects for development of OA in Argentina, both through golden and green roads are favorable, with their strengths and shortcomings

Radiation vulcanization in Argentina

International Nuclear Information System (INIS)

Ferenaz, Guillermo W.; Smolko, Eduardo E.

1999-01-01

The possibilities of using in Argentina the radiation process to vulcanize natural latex are analyzed. Experimental studies to define the irradiation conditions have been carried out and the preliminary elaboration of an irradiation device that includes the chemical reactor has been started. (author)

78 FR 46610 - Lemon Juice From Argentina and Mexico

Science.gov (United States)

2013-08-01

... Argentina and Mexico Determination On the basis of the record \\1\\ developed in the subject five-year reviews... determines that termination of the suspended antidumping duty investigation on lemon juice from Mexico would...), entitled Lemon Juice from Argentina and Mexico: Investigation Nos. 731-TA-1105-1106 (Review). By order of...

78 FR 47006 - Lemon Juice From Argentina and Mexico

Science.gov (United States)

2013-08-02

... Argentina and Mexico Determination On the basis of the record \\1\\ developed in the subject five-year reviews... determines that termination of the suspended antidumping duty investigation on lemon juice from Mexico would...), entitled Lemon Juice from Argentina and Mexico: Investigation Nos. 731-TA-1105-1106 (Review). By order of...

Update on women in physics in Argentina

OpenAIRE

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

2016-01-01

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

Education and Dictatorship in Argentina 1976-1983

OpenAIRE

Kaufmann, Carolina

2000-01-01

Este artículo señala aspectos generales del autodenominado “Proceso” acaecido en Argentina (1976-1983). Se ofrecen evidencias de censura e imposición autoritaria en el sistema educativo. Asimismo, se explicitan elementos constitutivos de la educación personalizada perennialista y de la pedagogía de los valores que fue adoptada durante aquellos años. This article indicates general aspects of the self-styled "Process" occurred in Argentina (1976-1983). Evidence of censorship and authoritar...

Bolivia's gas heads for Brazil as Argentina waits - and watches

International Nuclear Information System (INIS)

Knight, P.

1998-01-01

The first 1,800 km stretch of a 3,400 km natural gas pipeline from Bolivia to Brazil will start operating in December. First planned 50 years ago, the pipeline has long been expected to result in an immediate surge of gas use in Brazil. However, impending deep recession in Brazil makes this prospect less likely despite the power shortages which indicate the need for considerable gas imports. Initially, most Bolivian gas will flow through Brazil to Argentina. But gas production is expanding rapidly in Argentina and the supply contract with Bolivia ends in 1999. Plans are well advanced to build two gas lines into the south of the Brazil from Argentina. Ultimately, it is anticipated that Argentina, which has abundant reserves and a virtually saturated domestic market, will become the principal source of natural gas for Brazil. (UK)

Empleo de microalga Scenedesmus obliquas en la eliminación de cromo presente en aguas residuales galvánicas

Directory of Open Access Journals (Sweden)

Pellón, A.

2003-02-01

Full Text Available Dumping wastewaters from plating industry with a high content in chromium is a potential hazard for people and environment. It is known that some metals, including the heavy metals, at low concentrations participate in different metabolic routes, but at high concentration are toxic for many living organisms. Some microorganism taking the heavy metals from the environment are capable of concentrating and accumulating large quantities of them in different citoplasmatic structures with no-toxic effects. Microalgae have affinity by the polyvalent metals making possible their use as depollutant agent in waters that contains dissolved metallic ions as alternative methods when others methods of recycle are unusable. In this report a chromium removal study from a plating wastewater, using scenedesmus obliquus culture was made. The removal efficiency of Cr (VI was 12 % and Cr (III was 27 % and for condition of algae's immobilization removal of Cr (III was 95 %.

El vertido de aguas residuales con alto contenido de cromo, procedentes de las industrias galvanoplásticas, es un peligro potencial que se le presenta a la población y al medio ambiente. Se conoce que algunos metales, incluyendo los pesados, a concentraciones bajas participan en diferentes rutas metabólicas, pero en altas concentraciones pueden ser tóxicos para muchos organismos vivos. Algunos microorganismos toman los metales pesados del medio ambiente, siendo capaces de concentrar y acumular grandes cantidades de los mismos en diferentes estructuras citoplasmáticas, sin que lleguen a ocasionar efectos tóxicos en los mismos. Las microalgas son un ejemplo de este comportamiento, ya que tienen afinidad por los metales polivalentes, de ahí la posibilidad de su aplicación como agentes descontaminantes en aguas que contengan iones metálicos disueltos como método alternativo cuando no se pueda utilizar otro método de recuperación. En este trabajo se realizó un estudio de

Cooperativas, crédito estatal y desarrollo rural. Una primera aproximación a su estudio en el caso de Córdoba (1940- 1960

Directory of Open Access Journals (Sweden)

Gabriela Olivera

2006-01-01

Full Text Available En este artículo se ponen en relación los resultados del estudio sobre los incentivos materiales del accionar cooperativo con las tendencias de la economía agraria y familiar, en Córdoba, desde la década de 1940 a 1960.Los nuevos mecanismos de comercialización colectiva, en donde participaba la entidad de segundo grado FACA (Federación Argentina de Cooperativas Argentinas y a la cual estaban asociadas las cooperativas primarias adheridas a la Federación Agraria Argentina y, el Estado - a través del Instituto Argentino de Promoción al Intercambio- aumentaban el poder de negociación de los productores rurales. Por otro lado, las políticas crediticias provinciales fueron -ya desde el inicio del período considerado- favorables al sector agrario y cooperativo. Ambos factores -planteamos- actuaron como incentivos materiales al fortalecimiento de la economía familiar. Para analizar la economía agraria de los productores familiares trabajamos con datos censales a nivel micro-regional (departamento Tercero Arriba y contextualizamos este estudio con resultados de otras investigaciones sobre las regiones pampeanas cordobesa y nacional. Trabajamos también las prácticas cooperativas con memorias, balances y actas de las entidades de la micro-región y, realizamos una primera aproximación a las políticas crediticias provinciales a las cooperativas, a través de fuentes producidas y existentes en el Banco Provincia de Córdoba.In this article its put in a relationship the results of the study over the material incentives of cooperative action with the trends of rural and familiar economy, in Cordoba, between 1940 and 1960. The new mechanisms of colective commercialization, where the second grade entity FACA (Federación Argentina de Cooperativas Argentinas had a participation and to which were associated the primary cooperatives related to the Federación Agraria Argentina and, to the State -through the Instituto Argentino de Promoción al

1 Estudio Sectorial Sector lácteo de Argentina

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

Resumen: La producción de leche y productos lácteos conforma en Argentina un importante complejo productivo, de larga trayectoria histórica y gran impacto económico y social. En Argentina, esta industria conforma un oligopolio diferenciado en el que coexisten unas pocas grandes empresas nacionales y ...

REMOCIÓN DE CROMO VI DE SOLUCIONES ACUOSAS POR ADSORCIÓN SOBRE CARBONES ACTIVADOS MODIFICADOS

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Nubia Céspedes

2009-05-01

Full Text Available En este trabajo se determina la adsorción de Cr6+ de disoluciones acuosas en dos carbones activados comerciales en función del grado de modificación (reducción, oxidación de la superficie de los adsorbentes con tratamientos térmicos en presencia de hidrógeno, oxígeno y ácido nítrico. La química superficial de los carbones activados originales y modificados se examina por los métodos de titulaciones de Böehm y descomposición con temperatura programada (DTP. Los ensayos de evaluación de la capacidad de adsorción se realizan con soluciones modelo de ión cromato y bajo distintas condiciones de concentración inicial, tiempo de contacto, pH del medio, temperatura y masa de adsorbente. Se comprueba que la modificación de la superficie de los adsorbentes afecta el grado de adsorción del ión cromato en la medida en que los sólidos tratados con H2 muestran la mayor  capacidad de remoción. Las variables que afectan favorablemente la extensión de la remoción de cromo son: concentración inicial de 100 ppm,  pH  inicial de  2,0, temperatura de 25 °C y  masa de adsorbente de 100 mg. 

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

International Nuclear Information System (INIS)

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

1999-01-01

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

Geographic information system for the study of coastal erosion in the Department of Cordoba, Colombia: design tools, and use

International Nuclear Information System (INIS)

Hoyos, Natalia; Acosta, Susana; Correa, Ivan D

2006-01-01

The study and monitoring of factors that cause shoreline erosion processes require the use of geographic information systems (GIS) to integrate and analyze data on different topics and with various formats. The scope of this project was to design and build a GIS for the study of erosion processes along the coastline of Cordoba Department, Colombia. In this article, we present some of the tools used for the SIG design and implementation, as well as a specific application for shoreline erosion analysis. The Geo database diagrammed tool (ArcGISa) was used to document the geo database structure. The process is semiautomatic and delivers a comprehensive and friendly format for the end users. Linear referencing and dynamic segmentation tools (ArcGISa) were used to characterize the coastline according to several criteria, without subdividing or duplicating it. Shoreline retreat between 1938 and 2004 was analyzed with OSAS (Digital shoreline analysis system, USGS). Maximum distance between both shorelines was recorded by a Punta Arboletes transect (972 m). Real (on the ground) maximum distance however, was larger (around 1.5 km). Nevertheless it was not recorded by any of the OSAS generated transect

CALYPTRANTHES TRICONA (MYRTACEAE, NUEVA CITA PARA LA FLORA ARGENTINA

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Sara G. Tressens

1996-01-01

Full Text Available Calyptranthes tricona D. Legrand (Myrtaceae es reportada por primera vez para la Argentina.  Se incluyen una descripción y una ilustración. Se presenta un clave para la identificación de las especies argentinas de Calyptranthes se da. Se discuten algunas observaciones sobre la nomenclatura C.concinna DC.

The text of the agreement of 22 July 1977 between Argentina and the Agency for the application of safeguards in connection with a co-operation agreement between Argentina and Canada

International Nuclear Information System (INIS)

1995-01-01

The Agreement 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 came into force on 4 March 1994. As a result of the coming into force of the aforesaid Agreement for Argentina, the application of safeguards under the Agreement of 22 July 1977 between Argentina and the IAEA for the application of safeguards in connection with a co-operation agreement between Argentina and Canada has been suspended

Panorama de la familia Asteraceae (= Compositae en la Republica Argentina An overview of the plant family Asteraceae ( = Compositae in Argentina

Directory of Open Access Journals (Sweden)

Liliana Katinas

2007-07-01

Full Text Available Se presenta un panorama de la familia Asteraceae en la República Argentina , que incluye una breve historia taxonómica, datos numéricos de tribus, géneros y especies, ejemplos de endemismos y daptaciones ecológicas y una reseña sobre la hipótesis del origen de la familia en Patagonia. En la Argentina, las asteráceas representan la familia más numerosa con 227 géneros (cinco son endémicos y ca. 1400 especies (92 son adventicias y 382 son endémicas. En términos de taxones nativos, se hallan representadas en nuestro país todas las tribus de Asteraceae excepto Inuleae (sensu Bremer. Las tribus Arctoteae y Calenduleae están representadas por taxones adventicios exclusivamente y Cardueae posee sólo una especie nativa. Barnadesieae y Mutisieae son las únicas tribus con géneros endémicos de Argentina y también presentan el porcentaje más alto de géneros y especies en el país en comparación con el resto de las tribus. El mayor número de especies nativas, endémicas y no endémicas, se da en las provincias fitogeográficas Altoandina y Patagónica. La tribu más representada en número de géneros es Heliantheae, y en número de especies nativas es Senecioneae.An overview of the family Asteraceae in Argentina that includes a brief taxonomic history, numerical data of tribes, genera and species, examples of endemisms and ecological adaptations, and a discussion on the hypothesis on the origin of the family in Patagonia is given. Asteraceae is the most numerous family in Argentina , with 227 genera (five are endemic and ca. 1400 species (92 are adventitious and 382 are endemic. In relation to the native taxa, all tribes of Asteraceae occur in Argentina excepting Inuleae (sensu Bremer. Tribes Arctoteae and Calenduleae are represented exclusively by adventitious taxa, and Cardueae has only one native species. Barnadesieae and Mutisieae are the only tribes with endemic genera in Argentina and they also present the highest percentage of

Argentina's YPF hones in on privatization

International Nuclear Information System (INIS)

Anon.

1991-01-01

This paper reports on Argentina's push to privatize and attract more foreign investment to its petroleum sector which continues to gather momentum. The Argentine government plans by year end 1992 to sell unprofitable assets of Yacimientos Petroliferos Fiscales, then sell as much as 50% of the state oil company through an international stock offering. If privatization proceeds as expected, YPF Pres. Jose Estenssoro the, the company's stock will be offered to private investors early in 1993. The company was founded in 1922. By March 1992, Argentina also will begin selling all assets of state owned Gas del Estado (GDE) through an international bidding process expected to take about 18 months

Argentina v globalizačních procesech

OpenAIRE

Chervets, Tamara

2009-01-01

The process of globalization is a very important issue these days. This work will describe the process of globalization in Argentina, especially its economic aspect (foreign direct investments, export and import of goods and services, migration of labor force). I will also mention the history of its development and Argentina's membership in most important international and regional organizations.

Pro-Market Educational Governance: Is Argentina a Black Swan?

Science.gov (United States)

Beech, Jason; Barrenechea, Ignacio

2011-01-01

In this article we explore ways in which pro-market discourses have been interpreted in policy initiatives in Argentina since the 1970s. Our argument is that even though pro-market discourses have guided reforms in many aspects of public policies in Argentina, the arena of education has overall been resistant to taking them up. The first part of…

Scenarios for wind power in Brazil, Argentina and Chile; Cenarios para a energia eolio eletrica no Brasil, Argentina e Chile

Energy Technology Data Exchange (ETDEWEB)

Dedecca, Joao Gorestein; Nogueira, Larissa Goncalves; Jannuzzi, Gilberto de Martino [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Fac. de Engenharia Mecanica. Dept. de Energia], emails: jdedecca@fem.unicamp.br, larissa@fem.unicamp.br, januzzi@fem.unicamp.br; Gomes, Rodolfo Dourado [International Energy Initiative-Latin America (IEI-LA), Campinas, SP (Brazil)], email: rodolfo@iei-la.org

2010-07-01

The Chilean, Argentinean and Brazilian power matrixes presented in the last two decades a growth of the non-renewable energy sources share, especially fossil sources, mainly in installed capacity and in a lesser degree in energy production. Greenpeace and the European Renewable Energy Council have elaborated a reference energy scenario together with a scenario analyzing the institution of ample measures for the promotion of renewable energy sources. Feed-in tariffs and auction or bidding mechanisms implemented in Brazil and Argentina and the renewable portfolio standard implemented in Chile allied with the wind industry state in these countries indicate that Chile and Argentina will fulfill the 2020 wind power installed capacity predicted in the reference scenarios, while Brazil will reach the energy revolution scenario prediction. Important energy policy changes are required if the Chile and Argentina energy revolution scenarios wind power installed capacity are to become a reality in 2020. (author)

A short history of the beginnings of hospital information systems in Argentina.

Science.gov (United States)

Yácubsohn, V

2012-01-01

To describe the development of early health information systems in Argentina and their impact on the development of professional societies in the discipline The first hospital information systems and health surveillance systems in Argentina are described and related to the rise of professional organizations for health informatics. The early health information systems in Argentina are related to precursor developments in medical informatics. Argentina saw a number of hospital information systems developed starting in 1977, which had an important influence on the practice and experience in medical informatics in the country, and the participation of Argentine professionals in national, regional, and international activities in the field.

Biotechnology in Argentina: New products, new multilateral challenges

Directory of Open Access Journals (Sweden)

Luciano M. Donadio Linares

2016-06-01

Full Text Available Since 20 years ago, a public-private alliance has transformed Argentina into a remarkable global actor in developing biotechnological products for food and renewable energies. This strategic alliance resulted in the boosting of scientific knowledge, the extension of the production boundary, the expansion of international trade and the creation of the conditions for an integral development. Furthermore, given the characteristics of biotechnology as a new phenomenon, wto has become the field within where a number of disputes take place, disputes which not only controvert trade issues, but also the State’s limits to design and apply public policies on the matter at issue. As a consequence, the present article seeks to, on the one hand, describe how Argentina built its public policy on Biotechnology and, on the other hand, analyze the challenges that Argentina faces within the multilateral trade system

Hongos patógenos de insectos en Argentina (Zygomycetes: Entomophthorales

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C.C López Lastra

2006-06-01

Full Text Available Se informa de tres especies de hongos Entomophthorales en insectos encontrados en cultivos agrícolas en la Provincia de Buenos Aires, Argentina: Zoophthora radicans Batko (Brefeld; Entomophthora planchoniana Cornu y Pandora gammae (Weiser Humber. Se incluyen las medidas de las estructuras fúngicas.Pathogenic fungi of insects from Argentina (Zygomycetes: Entomophthorales. Three species of Entomophthorales entomopathogenic fungi (Zygomycotina: Zygomycetes have been identified from insects in agricultural crops (Buenos Aires Province, Argentina: Zoophthora radicans Batko (Brefeld; Entomophthora planchoniana Cornu and Pandora gammae (Weiser Humber. Fungal structure measurements are reported. Rev. Biol. Trop. 54(2: 311-315. Epub 2006 Jun 01.

Argentina's experience with parallel exchange markets: 1981-1990

OpenAIRE

Steven B. Kamin

1991-01-01

This paper surveys the development and operation of the parallel exchange market in Argentina during the 1980s, and evaluates its impact upon macroeconomic performance and policy. The historical evolution of Argentina's exchange market policies is reviewed in order to understand the government's motives for imposing exchange controls. The parallel exchange market engendered by these controls is then analyzed, and econometric methods are used to evaluate the behavior of the parallel exchange r...

[Socio-epidemiological and cultural aspects of cutaneous leishmaniasis: conceptions, attitudes and practices in the populations of Tierralta and Valencia (Cordoba, Colombia)].

Science.gov (United States)

Patiño-Londoño, Sandra Yaneth; Salazar, Lina Marcela; Acero, Catalina Tovar; Bernal, Iván Darío Vélez

2017-01-01

This article focuses on the conceptions, attitudes and practices of the inhabitants from four villages (veredas) in Tierralta and Valencia (Cordoba, Colombia), who have suffered from or are aware of the existence of cutaneous leishmaniasis. A mixed methodology was implemented based in a qualitative design using interviews and focus groups (n=45) and an epidemiological design which included applying the Montenegro test (n=251), uncovering suspected cases of cutaneous leishmaniasis in humans, (n=5) and applying epidemiological surveys (n=409). Among the results, a lack of knowledge regarding the vector was found; although respondents could identify the Lutzomyia (known as "alú"), they did not correlate it with cutaneous leishmaniasis. In addition, traditional home treatments were more frequently used, increasing the underrecording of cases. With respect to healthcare personnel, flaws in diagnosis and treatment were found, which reinforces adherence to home treatments. This scenario calls for a reflection upon the challenges of the health care system in relation to the interventions of health personnel in communities situated in endemic areas.

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

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Marina Gabriela Zunino

2012-04-01

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

Las Dactylopiidae y Diaspididae (Hemiptera, Coccoidea de la Colección Kenneth Hayward, Tucumán, Argentina The Dactylopiidae and Diaspididae (Hemiptera, Coccoidea of the Kenneth Hayward Collection, Tucumán, Argentina

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Lucía E. Claps

2006-03-01

Full Text Available Se estudió la colección Kenneth Hayward depositada parte en el Instituto Miguel Lillo (IMLA y parte en la Estación Experimental Agroindustrial "Obispo Colombres" (EEAOC de Tucumán, Argentina. Se citan cuatro especies de Dactylopiidae y 32 de Diaspididae con sus respectivas plantas huéspedes. Se redescribe e ilustra a Duplaspidiotus koehleri Lizer y Trelles y Pallulaspis lantanae Green & Laing, descriptas originalmente para la Argentina. Se cita por primera vez al género Rugaspidiotus Mc Gillivary para la Argentina.The Kenneth Hayward collection housed at the Instituto Miguel Lillo (IMLA and at Estación Experimental Agroindustrial "Obispo Colombres" (EEAOC both in Tucumán, Argentina, was studied. Four Dactylopiidae and 32 Diaspididae species with their host plants are listed. Duplaspidiotus koehleri Lizer y Trelles and Pallulaspis lantanae Green & Laing, are redescribed and illustrated; the two species were originally described from Argentina. The genus Rugaspidiotus Mc Gillivary is recorded for the first time from Argentina.

Floods, Droughts and Farming on the Plains of Argentina and ...

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

2015-04-01

Floods, Droughts and Farming on the Plains of Argentina and Paraguay, Pampas and Chaco Regions ... End Date. April 1, 2015 ... Argentina, South America, Paraguay, North and Central America ... IDRC is now accepting applications for this year's IDRC Doctoral Research Awards (IDRA). ... Careers · Contact Us · Site map.

Acumulación de metales (cadmio, zinc, cobre, cromo, níquel y plomo) en especies del género Pelargonium, suministro desde el suelo, ubicación en la planta y toxicidad

OpenAIRE

Orroño, Daniela Inés

2011-01-01

La acción antrópica puede causar la contaminación de los suelos con metales. Para la remediación de pequeñas áreas contaminadas se sugirió el uso de plantas ornamentales. En esta tesis, inicialmente se estudió la capacidad de fitorremediación de tres especies del género Pelargonium en un suelo contaminado con cadmio, zinc, cobre, cromo, níquel y plomo, y se seleccionó la más tolerante (Pelargonium hortorum). Los objetivos fueron estudiar en qué fracciones químicas y físicas del suelo se ubica...

The regulatory control of radioactive sources in Argentina

International Nuclear Information System (INIS)

Rojkind, R.H.

1998-01-01

Argentina has been conducting nuclear activities for more than forty years, and had established a Regulatory Authority as early as in 1956. Procedures for compliance monitoring and enforcement have been in use in the regulatory control of radioactive sources, and regulatory standards and regulations were in force in Argentina before the accident in Goiania. The conclusions drawn from the Goiania accident encouraged the Argentine authorities to improve some regulatory procedures and helped to enhance the quality of the regulatory process. As a result, the effectiveness of the control of spent radioactive sources has gradually increased, and enforcement actions to prevent radioactive sources ending up in the public domain have improved. Lessons learned in Argentina from the accident in Goiania are presented as well as the main characteristics of an effective enforcement programme to prevent radiological accidents when radioactive sources are used for industrial, medical, research and teaching purposes. (author)

Measurements of atmospheric fallout in Argentina

International Nuclear Information System (INIS)

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

1998-01-01

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

Burden of Serious Fungal Infections in Argentina

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Fernando O. Riera

2018-04-01

Full Text Available The number of fungal infections at any given time in Argentina is not known. Here we estimate the burden of serious fungal infections in Argentina for the first time. Specific population statistics were searched from multiple sources, local literature was identified, and estimates made. Some additional data were sourced from the Ministry of Health, the Global Initiative for Asthma (GINA program, and national haematology and transplant societies. Argentina has a population of 43.8 million, with 25% of this total being children under 15 years. The predicted candidemia annual incidence is 2193 cases, with 50% occurring in the ICU. At a 6% prevalence rate, an estimated 593,695 women suffer from recurrent vulvovaginal candidiasis. Invasive aspergillosis is relatively common because of high smoking and chronic obstructive pulmonary disease (COPD rates, with 268 cases in immunocompromised patients and another 1938 in the 168,000 COPD patients admitted to hospital. Asthma is also common, affecting 14% of adults, and so allergic bronchopulmonary aspergillosis (ABPA and severe asthma with fungal sensitization (SAFS are major problems. An estimated 432 cases of cryptococcal meningitis (CM—90% of them in AIDS patients—and 1177 cases of Pneumocystis pneumonia (PCP occur each year. The estimated annual case number of disseminated histoplasmosis is 404 in AIDS patients, almost as frequent as CM. Paracoccidioidomycosis annual incidence is estimated at 219, and coccidioidomycosis at 16 cases. At least 881,023 people (>2.01% in Argentina are affected by a serious fungal disease annually, with considerable morbidity and mortality.

La letteratura italiana tradotta in Argentina

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Silvia Cattoni

2017-11-01

Full Text Available In due secoli di storia della letteratura argentina, lo sviluppo della letteratura italiana tradotta è in stretto rapporto con i propositi pedagogici o estetici determinati dal contesto culturale dei diversi momenti storici. In linea di massima, è possibile affermare che, dalla conformazione dello Stato nazionale e durante i primi decenni del XX secolo, la traduzione letteraria mirava ad ampliare l’orizzonte culturale di un lettore che si consolidava al ritmo della fiammante nazione. Nelle fasi successive e in stretto rapporto con la politica culturale portata avanti da Victoria Ocampo a partire dal 1931 tramite la rivista Sur e il suo posteriore progetto editoriale, la traduzione è stata soprattutto una pratica di scrittura che ebbe un’influenza decisiva nell’ordito della letteratura nazionale favorendo il suo rinnovo e incentivando le versioni di traduttori argentini. Fu questa un’apertura che favorì, durante la seconda metà del secolo, nel contesto della ricezione della letteratura universale, l’ingresso della letteratura italiana in Argentina. Il presente lavoro tratta in maniera sistematica, ma provvisoria, il panorama della letteratura italiana tradotta in Argentina. Lo scopo principale comporta il registro dei momenti più fecondi e l’interpretazione degli esiti ottenuti nei confronti della traduzione nel sistema letterario nazionale.

Legislation and Organization of Radiological Protection in the Republic of Argentina

International Nuclear Information System (INIS)

Gonzalez, A.; Carrea, A.; Nowotny, G.

1979-01-01

The history of legislation and organization of radiological protection goes hack to 1950 in Argentina. The terms of references of the National Commission of Atomic Energy in Argentina are outlined and the actual organization of the authority is also presented. (author)

Migration trends in Argentina: immigration and exile Dinámica migratoria Argentina: inmigración y exilios

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Fernando Osvaldo ESTEBAN

2010-10-01

Full Text Available Through the development of a typology of migration flows, the paper reviews the most important trends in the history of Argentina: the massive European immigration, internal migrations, and immigration from neighbouring countries. The paper then discuss the current process of emigration from Argentina, and the return of old immigrants. The paper assess the economic factors involved through an analysis of unemployment, poverty and income distribution indicators in recent years. Finally, the paper examines the possibility of diminishing the recent emigration trend due to economic reasons. A partir de una tipología de flujos migratorios se realiza un repaso de aquellos más importantes en la historia de Argentina: la masiva inmigración europea, las migraciones internas y aquellas provenientes de países limítrofes. Posteriormente describe el actual proceso de emigración de argentinos y retorno de antiguos inmigrantes. Se abordan luego las causas económicas que lo produjeron a través del estudio de la evolución de los indicadores de desempleo, pobreza y distribución del ingreso en el país durante los últimos años. Finalmente, plantea la posibilidad de aprehender este flujo emigratorio como un exilio económico.

76 FR 80870 - Notice of Determination of Pest-Free Areas in Mendoza Province, Argentina

Science.gov (United States)

2011-12-27

... ;D=APHIS-2010-0032. The first commenter acknowledged Argentina's history of successful Medfly control...] Notice of Determination of Pest-Free Areas in Mendoza Province, Argentina AGENCY: Animal and Plant Health... Southern and Central Oases in the southern half of Mendoza Province in Argentina as pest-free areas for...

Crisis y perspectivas de la industria automotriz argentina

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Damián Andrés Bil

2016-12-01

Full Text Available Con la conformación del Mercosur, la automotriz argentina se expandió. Durante los últimos años alcanzó récords de producción, exportaciones y ventas; al punto que se la señala como ejemplo de una nueva etapa productiva. No obstante, desde finales de 2013 el complejo experimenta una crisis que provocó una considerable caída de los indicadores, con suspensiones e incluso despidos en las empresas de autopartes. En este artículo, proponemos revisar los indicadores de la actividad (escala y mercado, productividad, costo laboral, saldo comercial en perspectiva histórica y en el contexto de la competencia internacional. El objetivo es determinar si la situación actual corresponde a un inconveniente coyuntural, o si por el contrario expresa límites históricos que la automotriz argentina no ha superado; y sus perspectivas. *Palabras clave: Argentina, automotriz, crisis, competitividad, Mercosur

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)

Argentina: Social Sectors in Crisis. A World Bank Country Study.

Science.gov (United States)

World Bank, Washington, DC.

Based on the findings of a two month visit to Argentina by a World Bank Mission in November/December of 1988, this report summarizes current economic, education, and social policies in Argentina. The four major areas targeted are the social sectors, education, health care, and housing. The analysis identifies critical problems in the organization…

Parâmetros sangüíneos de pacu Piaractus mesopotamicus (Holmberg, 1887 alimentados com dietas suplementadas com cromo trivalente em duas densidades de estocagem - DOI: 10.4025/actascianimsci.v29i4.1019 Hematological parameters of pacu Piaractus mesopotamicus (Holmberg, 1887 fed diets supplemented with trivalent chromium in two stocking densities - DOI: 10.4025/actascianimsci.v29i4.1019

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Flávio Ruas de Moraes

2008-03-01

Full Text Available O objetivo deste trabalho foi avaliar os efeitos da suplementação com cromo trivalente (0, 6, 12 e 18 mg kg-1 de ração sobre as variáveis hematológicas de Piaractus mesopotamicus, mantidos em duas densidades de estocagem (4 e 20 kg m-3. Os mantidos na maior densidade e alimentados com dietas suplementadas com 0 e 6 mg de cromo kg-1 apresentaram redução do número de linfócitos circulantes, sugerindo má adaptação a essa condição de alta densidade. Nas dietas suplementadas com 12 e 18 mg kg-1, tal efeito não foi observado, porém verificou-se aumento do número de trombócitos no tratamento com 12 mg de cromo kg-1. A inexistência de diferença significativa entre os tratamentos, aos 30 dias, sugere a adaptação dos peixes ao tipo de alimento e à situação de alta densidade. Portanto, nas condições deste ensaio, a suplementação com 12 e 18 mg de cromo kg-1 é interessante como estratégia alimentar durante 15 dias.This work evaluated the effects of chromium supplementation on the hematological parameters of Piaractus mesopotamicus Holmberg, 1887 maintained in two stocking densities. Fish were fed diets supplemented with 0, 6, 12 and 18 mg trivalent chromium kg-1 dry ration and maintained at 4 and 20 kg m-3. The fish under high stocking density and fed diets supplemented with 0 and 6 mg kg-1 showed reduction in the number lymphocytes, which suggests non-adaptation to this condition of high density. This was not observed in fish fed diets supplemented with 12 and 18 mg chromium kg-1, but an increase in the number of thrombocytes was evident. The lack of difference between treatments after 30 days may suggest a possible adaptation of fish to the situation. It can be added that supplementation with 12 and 18 mg chromium kg-1 is an interesting feeding strategy for a period of 15 days.

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

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Paulo Botta

2012-01-01

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

Gender, age, social disadvantage and quitting smoking in Argentina and Uruguay.

Science.gov (United States)

Niedzin, Mirosław; Gaszyńska, Ewelina; Krakowiak, Jan; Saran, Tomasz; Szatko, Franciszek; Kaleta, Dorota

2018-03-14

Cessation of tobacco use has the potential to provide the greatest immediate benefits for tobacco control. Understanding the social determinants of smoking cessation is an essential requirement for increasing smoking cessation at the population level. The purpose of this study was to analyze the socio-economic dimensions associated with cessation success among adults in Argentina and Uruguay. Data from the Global Adult Tobacco Survey (GATS), a cross-sectional, population-based, nationally representative survey conducted in Argentina (n=5,383) and Uruguay (n=4,833) was utilized. Univariable and multivariable logistic regression analyses with results being presented as odds ratios (OR) with 95% confidence intervals were applied to study differences among those respondents who sustained smoking abstinence (≥1 year) and those who continued smoking. The GATS study revealed that social gradients in tobacco quitting exist in Argentina and Uruguay. Being aged 25-34, particularly men in Uruguay, women in Argentina, low educated men in Argentina and having a lower asset index were associated with reduced odds for quitting. Factors that are driving differences in smoking cessation between diverse social groups in Latin America countries need to be considered when implementing relevant interventions to ensure tobacco control strategies work effectively for all population segments.

Economy Profile of Argentina

OpenAIRE

World Bank Group

2017-01-01

Doing Business 2018 is the 15th in a series of annual reports investigating the regulations that enhance business activity and those that constrain it. This economy profile presents the Doing Business indicators for Argentina. Doing Business presents quantitative indicators on business regulation and the protection of property rights that can be compared across 190 economies; for 2018 Arge...

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

International Nuclear Information System (INIS)

1977-08-01

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

LAS ESPECIES ARGENTINAS DEL GENERO SICYOS (CUCURBITACEAE.

Directory of Open Access Journals (Sweden)

Raúl Martínez Crovetto

1964-01-01

Full Text Available El autor estudia las especies del género Sicyos que viven dentro del territorio de la República Argentina; señalando que hasta el presente se han hallado seis. Luego de una diagnosis del género, suministra una clave, descripciones y figuras de cada una de ellas, a fin de facilitar su reconocimiento. Las especies estudiadas son S. malvifolius Griseb., S. polyacanthus Cogn., S. Odanellii Mart.-Crov., S. Kunthii Cogn. (nuevo habitante para la flora argentina, S. Warmingii Cogn, S. Warmingii Cogn. var. longispina Mart.-Crov. (nueva variedad y S. ignarus Mart.-Crov. (especie nueva para la ciencia.

Regional safeguards arrangements: The Argentina-Brazil experience

International Nuclear Information System (INIS)

Marzo, M.; Gonzales, H.L.; Iskin, M.C.L.; Vicens, H.

1997-01-01

A Common System of Accounting and Control of Nuclear Material (SCCC) was established by Argentina and Brazil in July 1992. It is a full scope safeguard's system in both countries. The Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials (ABACC) was created to apply the SCCC. The main elements of the SCCC are presented. The main safeguards' procedures are described. A brief discussion of the inspection methodology and its impact for facility operators is performed. The safeguard's implementation from the operator's point of view is commented, taking as example a fuel fabrication plant in Argentina and a uranium enrichment plant in Brazil. (author)

La globalización y la enseñanza de la psicología en Argentina Globalization and education in psychology in Argentina

Directory of Open Access Journals (Sweden)

Hugo Klappenbach

2003-12-01

Full Text Available El trabajo aborda tres cuestiones. En primer lugar, analiza brevemente a la historia de la enseñanza de la psicología en Argentina, subrayando la importancia adquirida por el psicoanálisis en la tradición universitaria psicológica. En segundo lugar, desarrolla algunos de los estudios y algunas de las líneas de debate contemporáneo sobre formación universitaria del psicólogo, comenzando por algunos estudios clásicos en los Estados Unidos y concluyendo en la propuesta de diplomatura en psicología, actualmente en debate en los países miembros de la Unión Europea. En tercer lugar, analiza el impacto generado por la globalización en los procesos de formación del psicólogo en Argentina, especialmente a partir del impacto del llamado Mercosur educativo. En ese marco, se analiza críticamente la situación de los programas de psicología en las universidades argentinas.This paper approaches three subjects. Firstly, it briefly analyzes the history of psychology undergraduate programs of in Argentina, in which psychoanalytical bias is emphasized. Secondly, it reviews some important studies and reports concerning undergraduate programs and professional training in Psychology, beginning with some classical reports in USA, finishing with the proposal of an European Diploma in Psychology, which is now under evaluation in European countries. Thirdly, globalization effects, specially those from educational Mercosur, on teaching of psychology at undergradute programs and professional training in psychology in Argentina are analyzed. In such context, a critical report on psychology undergraduate programs in the country is reviewed.

Allamanda schottii (Apocynaceae: nueva cita para la Flora Argentina

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Julio A. Hurrell

2013-01-01

Full Text Available En este trabajo Allamanda schottii Pohl (Apocynaceae es documentada como nueva cita genérica y específica para la Flora Argentina. La especie fue hallada en la ribera del Paraná, en el norte de la provincia de Corrientes, Argentina. Se incluye su sinonimia, descripción, comentarios sobre su distribución, hábitat, fenología, biología reproductiva, nombres vulgares, usos y observaciones.

Nota sobre el género Imperata (Poaceae, Panicoideae, Sacchareae) en Argentina

OpenAIRE

Peichoto, Myriam Carolina

2017-01-01

En este trabajo se confirma la presencia de Imperata tenuis en Argentina. Se presenta una ilustración, material de referencia y un mapa de su distribución geográfica en el sur de Sudamérica. Se incluye una clave para identificar las especies del género Imperata presentes en la Argentina. This work confirms the presence of Imperata tenuis in Argentina, and includes an illustration, reference material, a map showing its geographic distribution in southern South America, and a key to identi...

Pe do sedimentary sequence in late Quaternary section in Zarate, Argentina

International Nuclear Information System (INIS)

Tofalo, O.; Orgeira, M.; Alonso, M.; Ramos, A.

2007-01-01

Field geological features, grain-size, sand, silt and clay mineralogy, micromorphology, optically simulated luminiscence (OSL) ages have been used to reconstruct the pedosedimentary sequence in a late Quaternary section in Zarate, Buenos Aires province. Paleosols were developed on loess and four clear discontinuities in sedimentation and paleosols generation were observed. These discontinuities have determinated four units with different types of calcrete. The welded paleosols developed on unit C can be 1correlated and linked to the other ones outcropped in Baradero (Buenos Aires province) and Lozada (Cordoba province). These records probably span the equivalent of marine oxygen isotope stage (OIS) 5, the last interglacial stage before the present. The ground water and pedogenic calcretes and their association with smectite, illite and ferric oxide suggest dried climate than present one and strongly seasonality. (author)

Horizontalidad, autogestión y protagonismo en Argentina

OpenAIRE

Marina Sitrin

2010-01-01

Este artículo trata los movimientos sociales autónomos que surgieron después de la crisis económica y la posterior rebelión popular en Argentina en diciembre de 2001. Los movimientos autónomos en la Argentina, como tantos movimientos en el mundo de hoy, son movimientos basados en la creación de nuevas relaciones sociales y comunidades ahora, al mismo tiempo que proyectan nuevas sociedades y las relaciones en y para el futuro. Son movimientos con una concepción diferente del tiempo y el espaci...

Aphanes arvensis (Rosaceae) en el extremo nordeste de la Argentina

OpenAIRE

Gustavo Hildt; Héctor A. Keller

2017-01-01

Se menciona por primera vez para el nordeste argentino a una hierba adventicia en el nuevomundo. La especie es ilustrada mediante fotografías Fil: Hildt, Gustavo. Universidad Nacional de Misiones; Argentina Fil: Keller, Hector Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina

Psychometric properties of a driving self-efficacy scale – short form in Argentinean drivers

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Mario Alberto Trogolo

2017-06-01

Full Text Available The purpose of this study was to translate and examine the psychometric properties of a driving self-efficacy scale developed by Dorn and Machin (2004. The factor structure, reliability and external validity of the scale were examined in a sample of 447 drivers from Cordoba, Argentina. In addition, measurement invariance across sex was also tested. Results from a confirmatory factor analysis support the unidimensional structure of the scale and the invariance of its parameters (configural, metric and scalar between men and women. Reliability analyses using alpha and omega coefficients revealed high internal consistency (coefficients equal to 0.81 in both cases and satisfactory evidence of external validity of the scale scores, with measures of risk perception, risky driving, history of traffic crashes and fines. Finally, results also showed that the scale seems to be relatively robust against response biases due to social desirability. In summary, findings support the validity and reliability of the scale in Argentina. However, further studies analyzing additional psychometric properties are needed.

Capturing latecomer advantages in the adoption of biofuels: The case of Argentina

International Nuclear Information System (INIS)

Mathews, John A.; Goldsztein, Hugo

2009-01-01

Although Argentina came late to the biofuels revolution, a series of measures taken recently at federal and provincial government level have created new opportunities. New federal laws on biofuels promotion have sparked an investment boom. The main activity has been in the biodiesel sector-partly because diesel is the dominant fuel sector in Argentina, and partly because the country had already engineered a soy revolution over the past 15 years, becoming the world's largest exporter of soy oil and soy meal. Biodiesel allows this revolution to be extended-from soy as foodstuff to soy as fuelstock. The biodiesel revolution now underway promises to extend Argentina's latecomer advantages by combining greater scale and lower costs with introduced technical innovations such as genetically modified crops and no-till farming. In this way, Argentina can be seen to be demonstrating the superiority of biofuel production in countries of the South over the conditions obtaining in countries of the North-including superior resources availability, superior energetics and lower costs. Whereas Brazil has demonstrated its superiority in sugarcane-based ethanol, Argentina is about to demonstrate its superiority in soy-based biodiesel

El cromo (VI Induce la frecuencia de mutación y pérdida de Heterocigocidad En Saccharomyces cerevisiae

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Gustavo Santoyo

2018-01-01

Full Text Available El cromo (Cr es uno de los principales contaminantes en desechos industriales, asociado con diversos daños a la saludhumana, motivo por el que en este trabajo analizamos el efecto del Cr hexavalente sobre la frecuencia de mutaciónespontánea (utilizando el gen reporteroCAN1 y la pérdida de heterocigocidad en la levaduraSaccharomycescerevisiae. Se comparó su efecto en una mutante en el genrev3, que codifica para la polimerasa zeta. Los resultadossugieren que el Cr(VI puede inducir la frecuencia de mutación entre 20 y 28 veces, a concentraciones de 25 y 50mM, respectivamente eincrementarse en una mutanterev3y aunque no se observaron los mismos niveles como enla cepa silvestre, esto sugiere que, además derev3, existen otros factores que inducen la aparición de mutacionesen el marcador empleado. El Cr también tuvo un efecto al aumentar la pérdida de heterocigocidad de entre 50 y57 veces en la cepa silvestre y la mutanterev3, respectivamente. Estos resultados muestran queREV3participa en elefecto mutagénico causado por el Cr(VI, pero no en la pérdida de heterocigocidad, en las células de la levadura.

First record in Argentina of Drepanosiphum oregonense Granovsky (Hemiptera: Aphididae) found on maples (Sapindaceae)

OpenAIRE

Ortego, Jaime; Olave, Anabel; Mier Durante, Milagros Pilar

2014-01-01

Se informa del hallazgo del áfido Drepanosiphum oregonense Granovsky (Hemiptera: Aphididae) sobre árboles de Acer pseudoplatanus y A. campestre (Sapindaceae) en Argentina lo que constituye el primer registro de la especie y del género Drepanosiphum Koch en Argentina y el segundo en Sudamérica. The finding in Argentina of the aphid Drepanosiphum oregonense on "maple tree" Acer pseudoplatanus ...

Potential of exchange of electric power between the electric systems of Brazil and Argentina; Potencial de intercambio de energia eletrica entre os sistemas eletricos do Brasil e da Argentina

Energy Technology Data Exchange (ETDEWEB)

Zanette, Andre Luiz [Petroleo Brasileiro S.A. (PETROBRAS), Rio de Janeiro, RJ (Brazil)

2010-07-01

Integration of power generation and transmission systems can provide a better utilization of energy resources and increase systems reliability. Given that Brazilian interconnection with Argentina, which represents the major Brazilian interconnection with neighboring countries, is used basically in winter months or in situations of unfavorable hydrology, this paper aims to demonstrate that power exchange between these two countries can be much higher than currently observed, resulting in greater benefits for producers and consumers of electricity in both countries, and that these benefits can also be obtained through better use of existing and planned interconnections between South American countries. To estimate the potential for power exchange between the electrical systems of Brazil and Argentina, three sets of simulations using the Brazilian Energy Plan (PDE 2010-2019) deck for Newave model, available from EPE, were made. These simulations consider the possibility that: (i) electricity is exported from Brazil to Argentina (II) electricity is imported from Argentina and (III) electricity is exchanged in both directions. The simulation results indicate that, despite rising operational marginal costs, significant amounts of electricity can be exported to Argentina at relatively low prices, depending on hydrological conditions. Moreover, the possibility of electricity imports from Argentina can reduce the operational costs of Brazilian system, as well as minimizing the risk of shortages. This work shows that the interconnections between Brazil and Argentina may be better used to benefit producers and consumers in both countries. Therefore, it is necessary to define an effective contractual and operational model for power trading and electricity transfer between these countries with the objective of promoting stability and mutual trust. Finally, studies to evaluate the potential for electricity exchange between South American countries are specially important

Potential of exchange of electric power between the electric systems of Brazil and Argentina; Potencial de intercambio de energia eletrica entre os sistemas eletricos do Brasil e da Argentina

Energy Technology Data Exchange (ETDEWEB)

Zanette, Andre Luiz [Petroleo Brasileiro S.A. (PETROBRAS), Rio de Janeiro, RJ (Brazil)

2010-07-01

Integration of power generation and transmission systems can provide a better utilization of energy resources and increase systems reliability. Given that Brazilian interconnection with Argentina, which represents the major Brazilian interconnection with neighboring countries, is used basically in winter months or in situations of unfavorable hydrology, this paper aims to demonstrate that power exchange between these two countries can be much higher than currently observed, resulting in greater benefits for producers and consumers of electricity in both countries, and that these benefits can also be obtained through better use of existing and planned interconnections between South American countries. To estimate the potential for power exchange between the electrical systems of Brazil and Argentina, three sets of simulations using the Brazilian Energy Plan (PDE 2010-2019) deck for Newave model, available from EPE, were made. These simulations consider the possibility that: (i) electricity is exported from Brazil to Argentina (II) electricity is imported from Argentina and (III) electricity is exchanged in both directions. The simulation results indicate that, despite rising operational marginal costs, significant amounts of electricity can be exported to Argentina at relatively low prices, depending on hydrological conditions. Moreover, the possibility of electricity imports from Argentina can reduce the operational costs of Brazilian system, as well as minimizing the risk of shortages. This work shows that the interconnections between Brazil and Argentina may be better used to benefit producers and consumers in both countries. Therefore, it is necessary to define an effective contractual and operational model for power trading and electricity transfer between these countries with the objective of promoting stability and mutual trust. Finally, studies to evaluate the potential for electricity exchange between South American countries are specially important

76 FR 51934 - Determination of Pest-Free Areas in Mendoza Province, Argentina; Request for Comments

Science.gov (United States)

2011-08-19

... acknowledged Argentina's history of successful Medfly control efforts, but stated that APHIS should not relax...] Determination of Pest-Free Areas in Mendoza Province, Argentina; Request for Comments AGENCY: Animal and Plant... received a request from the Government of Argentina to recognize additional areas as pest- free areas for...

An evolutionary approach to mania studying Sardinian immigrants to Argentina.

Science.gov (United States)

Carta, Mauro G; Perra, Alessandra; Atzeni, Michela; D'Oca, Silvia; Moro, Maria F; Kurotschka, Peter K; Moro, Daniela; Sancassiani, Federica; Minerba, Luigi; Brasesco, Maria V; Mausel, Gustavo; Nardi, Antonio E; Tondo, Leonardo

2017-01-01

To ascertain lifetime prevalence of positivity to a screening questionnaire for bipolar disorders (BD) in Sardinian immigrants to Argentina and residents of Sardinia and assess whether such positivity affects quality of life (QoL) in either group. Our hypothesis is that screen positivity for BD may be more frequent in immigrants. Observational study. Subjects were randomly selected from the membership lists of associations of Sardinian immigrants in Argentina. A study carried out in Sardinia using the same methodology was used for comparison. The Mood Disorder Questionnaire was used to screen for mania/hypomania and the Short-Form Health Survey-12 to measure QoL. A higher prevalence of manic/hypomanic episodes was found in Sardinian immigrants to Argentina (p immigrants to Argentina and in residents of Sardinia. To the best of our knowledge, this is the first study to show a higher lifetime prevalence of manic/hypomanic episodes in a general-population sample of individuals who migrated to a foreign country. Our results are in agreement with the hypothesis that hyperactive/novelty-seeking features may represent an adaptive substrate in certain conditions of social change.

Progress of Grid technology in Argentina: Lessons learned from EELA

International Nuclear Information System (INIS)

Dova, M. T.; Grunfeld, C.; Monticelli, F.; Tripiana, M.; Veiga, A.; Ambrosi, V.; Barbieri, A.; Diaz, J.; Luengo, M.; Macia, M.; Molinari, L.; Veonosa, P.; Zabaljauregui, M.

2007-01-01

The EELA project aimed to create a collaboration network between Europe and Latin American for training in Grid technologies and the deployment of a pilot Grid infrastructure for e-science applications. Grid computing has emerged as an important new field, and its development in Argentina is particularly important for a number of reasons, such as that Argentina has recently joined the ATLAS collaboration at CERN and the increasing interest in future biomedical applications. The potential of GRID technology is well known, however, its adoption is not a trivial task as it requires significant investment in several areas. In this paper, the achievements and progress in Argentina through close collaboration with EELA are presented. Among these are the deployment of a Grid Certification Authority infrastructure that is a crucial component in the activities of the e-Science community in the country; the deployment, integration and validation of a small local EELA node; installation and running of an analysis ATLAS application on the EELA infrastructure. The experience gained in participating in EELA dissemination events also allowed us to actively promote the GRID and training for its use different target audiences in Argentina and in LA. (Author)

Nuclear Data in Argentina (1992 -1993)

International Nuclear Information System (INIS)

Ricabarra, G. H.

1993-03-01

A progress report of nuclear data research in Argentina is given for the years 1992/1993, including the WIMS nuclear data library update project, and measurements and evaluations of selected neutron induced nuclear reactions. (author)

Entomofauna associated to horticultural crops under organic and conventional practices in Cordoba, Argentina

International Nuclear Information System (INIS)

Zalazar, Laura; Salvo, Adriana

2007-01-01

Farming practices and the addition of chemical synthetic substances in conventional agroecosystems are detrimental mainly to natural enemies of phytophagous insects, diminishing the natural regulation of pest insects. On the other hand, in organic agriculture, biological processes and care of the environment are favoured, hence an increase in insect biodiversity is predicted in this type of systems. In this work, abundance, richness of insects and proportion of functional groups were compared through a single quantitative sampling of insects in horticultural crop fields, three under organic and three under conventional management practices. Insect species richness, total and for guilds (phytophagous and entomophagous insects) were significantly higher in organic orchards, and also was the abundance of entomophagous insects. Richness and abundance of all insect orders (with exception of Homoptera abundance), were higher in orchards under organic management, being significant the differences for richness of Coleoptera and richness and abundance of Hymenoptera. Similar tendencies were observed in data obtained through sweep net in weeds. These results suggest that organic practices increase the diversity of species, particularly that of natural enemies. (author)

Nuevas citas de monocotiledóneas adventicias para la Argentina New records of adventitious monocots for Argentina

Directory of Open Access Journals (Sweden)

Julio A. Hurrell

2009-12-01

Full Text Available Este trabajo incluye cinco nuevos registros de monocotiledóneas adventicias para la Argentina: Aloe ciliaris Haw. (Asphodelaceae, Aspidistra elatior Blume (Convallariaceae, Sansevieria trifasciata Prain (Dracaenaceae, Phormium tenax J. R. Forst. & G. Forst. (Hemerocallidaceae y Ornithogalum arabicum L. (Hyacinthaceae, pertenecientes al orden Asparagales. También incluye una evaluación del estado actual de estas especies, en relación al proceso de naturalización: escapadas de cultivo ocasionales, naturalizadas.This paper includes five new records of adventitious monocots for Argentina: Aloe ciliaris Haw. (Asphodelaceae, Aspidistra elatior Blume (Convallariaceae, Sansevieria trifasciata Prain (Dracaenaceae, Phormium tenax J. R. Forst. & G. Forst. (Hemerocallidaceae and Ornithogalum arabicum L. (Hyacinthaceae, belonging to order Asparagales. Also includes an evaluation of its status in the naturalization process: casual alien, naturalized.

QUBIC in Argentina

Science.gov (United States)

García, B.; Harari, D.; Etchegoyen, A.; Medina, M. C.; Romero, G. E.; Qubic Collaboration

2017-10-01

QUBIC (QU Bolometric Interferometer for Cosmology) is an experimental cosmology project to measure the modes in the polarization of the cosmic background radiation (CBR), the fossil relic that reveals the properties at the Universe 380,000 years after the Planck Era. Discovery of the CBR in 1964 and measurement of tiny temperature anisotropies in 1992 were major breakthroughs in our understanding of the Universe. The next challenge is to measure the polarization of the CBR accurately enough to detect modes that would reveal the existence of primordial gravitational waves produced in the first stages of the Planck Era and probe inflation theory, that assumes an accelerated expansion during the first seconds. The mode signal is however extremely weak and its measurement requires complex instruments. The QUBIC collaboration has developed the concept of interferometric bolometry, that brings together the sensitivity of bolometric detectors with the control of systematic effects provided by interferometry. QUBIC is an international collaboration involving several universities and laboratories in France, Italy, United Kingdom and USA. Recently, Argentina has suggested Alto Chorrillo (Salta), as candidate site for the installation of the experiment, next to the LLAMA site. Here we describe the scientific objectives and the main features of the experiment and we detail the process through which the international collaboration decided to install in Argentina its first module as well as the challenges for our country in this project.

The Influence of Positivism in the Nineteenth Century Astronomy in Argentina

Science.gov (United States)

Santilli, Haydee; Cornejo, Jorge Norberto

2013-01-01

In this paper we analyze the influence of positivism in Argentina astronomical culture in the nineteenth century. We did the analysis from two dimensions, scientific knowledge development and science teaching. Because Argentina was a very young country at that time, it was of singular importance, not only the development of scientific knowledge…

Horticulture in Argentina: a productive alternative with great potential

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Ana Maria Castagnino

2011-12-01

Full Text Available Horticulture in Argentina is an activity with great potential whose history has mainly been driven by Italian immigrants who arrived during the last two centuries. It is a valuable complement for traditional primary productions on which the country is focused with more than 30 millions of cultivated hectares and different agro-climatic conditions that characterize the different horticultural regions distributed throughout the country. The aim of this article is to give a panorama of the history, reality and perspectives in Argentina of an activity that is an opportunity for producers and entrepreneurs interested in it. Due to its characteristics, horticulture generates and dynamizes employment with great importance for regional economies. The proportion between vegetables and fruit produced and commercialized in Argentina is 63 and 34% respectively. Horticultural products for exportation largely are garlic, onion and beans. Concerning the most commercialized vegetables in Argentina, potato, tomato, onion, squash, lettuce, pepper, marrow and sweet potato stand out, whereas orange, tangerine, apple, banana, lemon, pear, grape and grapefruit may be highlighted among fruit. At present, the main challenge of the Argentinian horticultural sector is given not only by the possibilities of productive diversification and the expansion of the productive area but also of the technological level optimization, the application of quality norms and the agro-industry growth.

Sistema de salud de Argentina The health system of Argentina

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Mariana Belló

2011-01-01

Full Text Available En este artículo se describe el sistema de salud de Argentina, que está compuesto por tres sectores: público, de seguridad social y privado. El sector público está integrado por los ministerios nacional y provincial, y la red de hospitales y centros de salud públicos que prestan atención gratuita a toda persona que lo demande, fundamentalmente a personas sin seguridad social y sin capacidad de pago. Se financia con recursos fiscales y recibe pagos ocasionales de parte del sistema de seguridad social cuando atiende a sus afiliados. El sector del seguro social obligatorio está organizado en torno a las Obras Sociales (OS, que aseguran y prestan servicios a los trabajadores y sus familias. La mayoría de las OS operan a través de contratos con prestadores privados y se financian con contribuciones de los trabajadores y patronales. El sector privado está conformado por profesionales de la salud y establecimientos que atienden a demandantes individuales, a los beneficiarios de las OS y de los seguros privados. Este sector también incluye entidades de seguro voluntario llamadas Empresas de Medicina Prepaga que se financian sobre todo con primas que pagan las familias y/o las empresas. En este trabajo también se describen las innovaciones recientes en el sistema de salud, incluyendo el Programa Remediar.This paper describes the health system of Argentina.This system has three sectors: public, social security and private.The public sector includes the national and provincial ministries as well as the network of public hospitals and primary health care units which provide care to the poor and uninsured population. This sector is financed with taxes and payments made by social security beneficiaries that use public health care facilities. The social security sector or Obras Sociales (OS covers all workers of the formal economy and their families. Most OS operate through contracts with private providers and are financed with payroll

La migracion internacional en Argentina hacia 2010

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Laura Calvelo

Full Text Available El artículo presenta los principales lineamientos de la migración internacional en Argentina hacia el año 2010, con detenimiento en el período 2000-2010. En el caso de la inmigración no nativa se basa en información de los censos nacionales de población 2001 y 2010. En el caso de la migración internacional de la población nativa de Argentina el análisis se sustenta en información de censos extranjeros hasta la ronda 2000 y en otras fuentes de datos de los principales países de destino hasta 2010 (Estados Unidos y España.

The genera Boiruna and Clelia (serpentes: pseudoboini in Paraguay and Argentina

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Norman J. Scott Jr.

2006-01-01

Full Text Available Snakes of the pseudoboine genera Clelia, which is probably polyphyletic, and Boiruna are distributed from southern Argentina, southern Brazil, and Uruguay northwards into central México. Six members occur in Paraguay and Argentina: B. maculata, Clelia bicolor, C. clelia, C. plumbea, C. quimi, and C. rustica. Historically, there has been taxonomic confusion among the larger species (B. maculata, C. clelia, C. plumbea, and C. rustica and between the small species (C. bicolor and C. quimi. All of the species except C. rustica have distinct ontogenetic color changes. Species can be distinguished on the bases of size, color, hemipenial spines, and loreal, supralabial, and ventral scale counts. Much of the morphological evolutionary differentiation in Boiruna and Clelia seems to have taken place in the snout region, as evidenced by the differing proportions of the scales of the loreal region. Boiruna maculata has the widest ecological amplitude. It is broadly distributed in most vegetation types north of the 38th parallel in central Argentina, being absent only from the deltaic sediments of Buenos Aires Province, Argentina and the broad valleys and rolling hills of eastern Paraguay. Clelia bicolor is most common in the Paraguay and Paraná river valleys, with a few records from the Andean foothills in northern Argentina. Clelia clelia is distributed along the Río Paraguay and the lower Paraná, and is also found throughout much of eastern Paraguay. Clelia plumbea is apparently parapatric with C. clelia along the Río Paraná in southeastern Paraguay and Misiones Province, Argentina. The ranges of C. quimi to the east and C. bicolor in the west about in this same region without apparent overlap. There are no vouchered records of Clelia rustica from Paraguay. In Argentina, it is a species of temperate climates; north of the 30th parallel, it occurs in the Andean foothills and the wet forests of Misiones Province. Southwards, it is widely distributed

WTO: US and Argentina settle dispute over patents and data protection.

Science.gov (United States)

Elliott, Richard

2002-12-01

In May 2000, supplementing an earlier complaint filed in May 1999, the US filed a complaint against Argentina, alleging that its patent laws violate the World Trade Organization's Agreement on Trade-Related Aspects of Intellectual Property (the TRIPS Agreement). The gist of the US complaint was that Argentina's law failed to provide: (1) adequate protection against "unfair" commercial use of undisclosed test data submitted in order to get market approval of pharmaceutical products; (2) certain safeguards for compulsory licences on an invention granted on the basis of inadequate working by the patent holder; and (3) adequate measures to prevent infringements of patent rights. The US also alleged that Argentina denies certain exclusive rights of patent holders, such as the exclusive right to import the patented product into the country. At the end of May 2002, the US and Argentina notified the WTO that they had reached a "mutually agreed solution," without prejudice to their respective rights and obligations under WTO agreements, and the US has withdrawn its complaint.

Breve historia de los refugiados en Argentina durante el siglo XX

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María Paula Cicogna

2009-12-01

Full Text Available Argentina ha sostenido, desde la letra escrita de la Constitución Nacional, ser un país receptor de inmigración, aunque en los hechos ha demostrado lo contrario. A pesar de ello, durante el siglo XX se instalaron grupos de exiliados, solicitantes de refugio y refugiados de las más diversas nacionalidades. Este artículo mostrará los contingentes que conformaron el mapa multicultural de la Argentina a partir del desarrollo de una cronología creada a en base a los trabajos de investigación que analizaron el establecimiento de las diversas comunidades._________________ABSTRACT:According to National Constitution Argentina has been an open doors country to immigration, although it has demonstrated the opposite. In spite of it, during XX century groups of exiles, asylum seekers and refugees of different nationalities settled in the country. Based in a chronology created from varied researches which analyzed the establishment of the diverse communities this article will show the groups that shape the multicultural map of Argentina.

NREL technical assistance to Argentina

Energy Technology Data Exchange (ETDEWEB)

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

1997-12-01

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

RERTR activities in Argentina

International Nuclear Information System (INIS)

Adelfang, P.; Alvarez, L.; Pasqualini, E.

2002-01-01

The Atomic Energy Commission of Argentina has been an active participant of the RERTR program since 1978. An important milestone of the Argentinean RERTR program was the development and manufacturing at industrial scale of U 3 O 8 dispersed fuel and its subsequent application to the conversion of the RA-3 reactor core to LEU fuel. More recently, our activities were focused on the development of U 3 Si 2 fuel with a density of 4.8 gU/cm 3 and the improvement of the manufacturing process of this type of fuel. The program to qualify CNEA as a supplier U 3 Si 2 dispersed fuels is scheduled to finalize by mid 2003. To hasten this program the main research reactor of Argentina, the RA3, raised its power from 5 MW to 8 Mw in October this year. This is an intermediate step in the program to increase RA-3 power to 10 MW Currently, one of the main objectives is to develop and qualify the technology for the production of high-density LEU fuel elements using U-Mo alloy. An original way to produce U-Mo powder (the HMD process) was developed and its being upgraded to plant scale production. Another significant progress was the development of LEU targets for the production of 99 Mo, in the form of miniplates prepared with dispersed LEU U-Al x . The shipment to USA of 207 MTR spent fuels containing US origin highly enriched uranium, successfully carried out in the end of 2000, is another remarkable achievement of the Argentinean RERTR program. This activity was carried out in the framework of the United States Foreign Research Reactor Spent Nuclear Fuel Acceptance Program. The fuels were fabricated in Argentina and used in the RA-3 reactor from 1968 to 1987. The inventory of the shipped HEU spent fuel consisted in 166 standard assemblies and 41 control assemblies. (author)

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

Science.gov (United States)

1988-07-01

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

Research on English Language Teaching and Learning in Argentina (2007-2013)

Science.gov (United States)

Porto, Melina; Montemayor-Borsinger, Ann; López-Barrios, Mario

2016-01-01

In this article we review research on English as a foreign language (EFL) teaching and learning published in Argentina between 2007 and 2013. This is the first review of a Latin American country in this series. Argentina has a century-long tradition of training EFL teachers but a comparatively shorter though fruitful history of foreign language…

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

Science.gov (United States)

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

2014-01-01

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

Nota sobre EL GÉNERO Imperata (Poaceae, Panicoideae, Sacchareae en Argentina

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Myriam C. Peichoto

2013-01-01

Full Text Available En este trabajo se confirma la presencia de Imperata tenuis en Argentina. Se presenta una ilustración, material de referencia y un mapa de su distribución geográfica en el sur de Sudamérica. Se incluye una clave para identificar las especies del género Imperata presentes en la Argentina.

Preparation of mandatory documentation before the start up of the RA-0 `zero power` nuclear reactor at Cordoba National University; Preparacion de la documentacion mandatoria para la puesta en marcha del reactor nuclear RA-0 en la Universidad Nacional de Cordoba

Energy Technology Data Exchange (ETDEWEB)

Martin, H R; Keil, W M; Pezzi, N

1992-12-31

Before the start up of the RA-0 `zero power` nuclear reactor installed at Cordoba National University, it was necessary to send to the Regulatory Authority the mandatory documentation which is required in the licensing process. With the previous papers existing for the operation in the first years of the `70, a work program for the future operational training personnel was elaborated. Based on the Authority`s applicable rules and the recommendations and with particular criteria originated in the working university conditions, the SAFETY report of RA-0 nuclear reactor was prepared. This paper describes the principal contents, items and documents involved in the safety report. (Author). [Espanol] Con motivo de la nueva puesta en servicio del REACTOR NUCLEAR RA-0 fue necesario elaborar la documentacion mandatoria requerida por la Autoridad Regulatoria Nacional. Siguiendo los lineamientos de las normas y recomendaciones vigentes e incluyendo criterios propios en lo que debia ser el contenido final de dicha documentacion, fue preparado lo que se ha denominado el INFORME DE SEGURIDAD DEL REACTOR NUCLEAR RA-0. Este documento que se describe en este trabajo, si bien contiene las habituales descripciones de todos los Informes de Seguridad, incluye otros aspectos que no siendo requeridos expresamente en el mismo, han dado una mayor coherencia a la conformacion de todos los aspectos que interrelacionan las areas de seguridad fisica, radiologica, nuclear y de control de materiales nucleares bajo salvaguardias. (Autor).

State of the art of municipal solid wastes and hazard wastes disposal in Argentina; Diagnostico de la situacion del manejo de los residuos solidos municipales y peligrosos en Argentina

Energy Technology Data Exchange (ETDEWEB)

Savino, A.A.

1997-12-31

The author analyzes the up to date situation of Argentina related to Municipal solid Waste management after the political and economic challenges suffered by Argentina. The author concludes that this country needs more waste treatment plants and more investments for environmental management. (Author) 15 refs.

Forensic population data for 20 STR loci in Argentina

OpenAIRE

Borosky, Alicia; Toscanini, Ulises; Gómez, Andrea; Parolin, María Laura; Basso, Nestor Guillermo; Vullo, Carlos

2017-01-01

In order to provide useful information of forensic interest for the new markers included in the PowerPlex1 21 System (Promega Corp, USA), namely D1S1656, D6S1043 and D12S391, a population study was conducted in a sample of 907 unrelated healthy individuals from Argentina. Samples were randomly chosen from routine paternity testing. Blood samples or buccal swabs were collected after informed consent, taken from individuals of different urban populations from 7 provinces of Argentina: 464 indiv...

A new genus of Platynini (Coleoptera: Carabidae) from Argentina

OpenAIRE

ROIG-JUÑENT, Sergio

2003-01-01

Los Platynini constituyen un grupo de carábidos distribuidos ampliamente en América del Sur, existiendo la mayor diversidad de especies en las regiones tropicales de altura de Los Andes. En la Argentina y Chile, la mayoría de las especies de Platynini se hallan distribuidas en áreas extracordilleranas, conociéndose pocos datos para la región Andina. A partir de recolecciones realizadas en la Precordillera y Cordillera de los Andes en Mendoza (Argentina), se hallaron ejemplares pertenecientes ...

Tribulations and achievements: the early history of Olympism in Argentina.

Science.gov (United States)

Torres, C R

2001-01-01

By the end of the nineteenth century, modern sport had enchanted the people of Argentina. At that time the nation enjoyed a remarkable degree of economic prosperity and embarked on increasing political democratization. These circumstances, along with the fact that the nation was represented from the beginning, in 1894, on the International Olympic Committee seemed to favour Argentina as the spearhead of the diffusion of Olympism throughout South America. However, the country only enjoyed its first official Olympic participation in the Paris Games of 1924 - a few months after the establishment of the Argentine Olympic Committee. This essay explores the reception and diffusion of Olympism in Argentina. It reveals a process of gradual adoption including conflicting views on the relationship between the state and sport, several attempts at institutionalization, international misunderstandings and the role of politics and class.

Extracción de cromo con disolventes orgánicos. I parte. Extracción con DEHPA

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de Juan, D.

1998-06-01

Full Text Available Chromium and its compounds give toxic and/or hazardous characteristics to all those industrial wastes, solids or liquids, that contain them. Organic solvent extraction is a technique that allows the recovery of chromium contained in these residues. In this work the extraction of Cr(III from aqueous solutions with solutions of a cationic reactive (DEHPA in kerosene is studied. In the same way the stripping process was studied. It has been found that Cr(III and DEHPA react in a 1/1 molar ratio, being the extraction kinetics very fast. Final aqueous phase final pH influence extraction yield, so that it is necessary to work with pH values between 3 and 4. It must be added a modifier (isodecanol to the organic phase to avoid the formation of a third phase in the stripping process. The concentration of isodecanol has to be higher than 15 %, so the organic phase used was a solution of 12.5 % v/v DEHPA in kerosene and 20 % v/v isodecanol. The stripping process is slow and must be carried out in an oxidant alkalyne medium, thus an aqueous solution of NaOH and H₂O₂ was used. An increase in the concentration of NaOH and H₂O₂ leads to an increase in the stripping yield initially, and becomes stable when concentrations of NaOH and H₂O₂ used are higher than 0.45 N and 4 % v/v respectively.

El cromo y sus compuestos confieren un carácter tóxico y/o peligroso a los residuos industriales, sólidos o líquidos, que los contienen. Una técnica que permite recuperar el cromo existente en estas sustancias es la extracción con disolventes orgánicos. En el presente trabajo se estudia la extracción del Cr(III presente en disoluciones acuosas con disoluciones de un reactivo de carácter catiónico (DEHPA en queroseno. Igualmente se estudia el proceso de reextracción. Se ha encontrado que el Cr(III y el DEHPA reaccionan mol a mol, siendo la cinética de extracción muy rápida. El pH final de

Increasing Capacity for Environmental Engineering in Salta, Argentina

Science.gov (United States)

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

2012-01-01

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

Increasing capacity for environmental engineering in Salta, Argentina.

Science.gov (United States)

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

2013-01-01

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

Greenstone: uso actual en Argentina

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Marcela Fushimi

2018-04-01

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

Visitantes florales diurnos del girasol (Helianthus annuus, Asterales: Asteraceae en la Argentina Diurnal floral visitors of sunflower (Helianthus annuus, Asterales: Asteraceae in Argentina

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Juan P. Torretta

2010-06-01

Full Text Available El girasol (Helianthus annuus L. es un importante cultivo oleaginoso en la Argentina. Durante tres campañas agrícolas, se determinaron la diversidad y la abundancia del elenco de los visitantes florales diurnos de capítulos de girasol, en ocho sitios que cubren gran parte del área cultivada en Argentina. Setenta y seis morfo-especies de visitantes florales, pertenecientes a ocho órdenes, fueron capturados sobre capítulos de este cultivo. El principal orden fue Hymenoptera, con 37 especies o morfoespecies, de las cuales 32 fueron abejas (Apoidea. Las familias de abejas más representadas fueron Apidae (13, Megachilidae (11 y Halictidae (7. La abeja doméstica (Apis mellifera L. realizó el 93% de las visitas. La composición del elenco de visitantes no mostró un patrón de variación identificable a lo largo del día, ni con respecto a la distancia al borde del cultivo, pero varió entre sitios de muestreo. Se concluye que la abeja doméstica es el principal polinizador del girasol en la Argentina, aunque varias especies nativas de abejas (Melissodes tintinnans (Holmberg, M. rufithorax Brèthes, Melissoptila tandilensis Holmberg, y Megachile spp. podrían ser consideradas como potenciales polinizadores del cultivo.Sunflower (Helianthus annuus L. is an important oilseed crop in Argentina. During three agricultural years, the diversity and abundance of diurnal floral visitors of sunflower heads were determined in eight sites spanning much of this crop's cultivation area in Argentina. Seventysix morpho-species of floral visitors, belonging to eight orders, were captured on sunflower. The principal order was Hymenoptera, with 37 species or morpho-species, of which 32 were bees (Apoidea. The most represented bee families were Apidae (13, Megachilidae (11 and Halictidae (7. The domestic bee (Apis mellifera L. accounted for 93% of the visits. Floral visitor composition did not show an identifiable variation pattern either throughout the day or

Cooperation on Water management issues, Argentina : Project in the framework of Bilateral Cooperation between Argentina and the Netherlands : Case studies on water management issues in Argentina

NARCIS (Netherlands)

Querner, E.P.; Morabito, J.A.; Rebori, G.

2007-01-01

In Argentina parts of the country have problems encountered from too much water or suffer serious water shortages. The Humid Pampas encounter an increased rainfall since the 1970’s. In Mendoza Province water resources are limited and all the water from the rivers is used for agriculture, drinking

Redefining the public sphere: self-managed schools in Argentina

OpenAIRE

Feldfeber, Myriam

2003-01-01

El Proyecto de las Escuelas Experimentales o Autogestionadas de la Provincia de San Luis adquiere sentido en el marco de la denominada Transformación Educativa y de las políticas desarrolladas en las últimas décadas en Argentina, que, al igual que en gran parte de los países latinoamericanos, han estado orientadas por discursos y prácticas tendientes a legitimar un nuevo modelo económico, social, político, cultural y educativo. La reforma educativa argentina de la década del '90 puede analiza...

First record of Vespula vulgaris (Hymenoptera: Vespidae) in Argentina

OpenAIRE

Masciocchi, Maité; Beggs, Jacqueline R.; Carpenter, James M.; Corley, Juan Carlos

2016-01-01

Vespula vulgaris (Linnaeus) es un véspido social nativo de la región Holártica. En este trabajo reportamos la primera detección de esta especie en Argentina. Obreras de esta avispa fueron capturadas cerca de la ciudad de San Carlos de Bariloche (Argentina) en Febrero de 2010, mientras se tomaban muestras de otra avispa invasora, Vespula germanica (Fabricius) o chaqueta amarilla, de morfología externa y hábitos similares a la anteriormente mencionada. Además, detallamos algunos caracteres de i...

Cultivos transgénicos en Argentina : mitos y realidades

OpenAIRE

Cantamutto, Miguel; Poverene, Mónica

2003-01-01

Cantamutto, M., Poverene, M. (2003). Cultivos transgénicos en Argentina: mitos y realidades. Redes, 10(20), 171-181. La producción creciente de cultivos transgénicos en la Argentina es observada con preocupación por la población debido a que aparecen cada vez más voces planteando dudas y amenazas acerca de las consecuencias del uso de esta tecnología, que incluso se atribuye a oscuras manipulaciones políticas. ¿Tienen fundamento esos conceptos? ¿A qué aspectos del uso de organismos genétic...

Identidad y distribución geográfica de Stemodia durantifolia (Plantaginaceae en la Argentina

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María de las Mercedes Sosa

2012-12-01

Full Text Available Stemodia durantifolia es una especie con dos variedades que crece desde California hasta Chile. La variedad típica se ha citado en trabajos previos para la Argentina y la otra variedad, chilensis fue mencionada hasta el momento para Chile. En este trabajo se descarta la presencia de la variedad típica en el país, se da a conocer su área de distribución y se cita por primera vez a la variedad chilensis para la Argentina. Se describen e ilustran las dos variedades, se incluye un mapa de distribución y una clave para separarla de las restantes especies que crecen en Argentina.Identity and geographical distribution of Stemodia durantifolia (Plantaginaceae in Argentina. The typical variety has been cited in previous studies for Argentina, and the other variety, chilensis, was mentioned so far in Chile. This work rules out the typical variety in the country, describes its geographical distribution and cites for the first time the var. chilensis for Argentina. A description, illustration and a map of distribution of the species with these two varieties are provided, as well as a key to distinguish the other Argentinean species.

A universidade sob o peronismo: de Perón a Menem ou da gratuidade aos intentos de arancelamiento

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Mário Luiz Azevedo Neves de

2003-01-01

Full Text Available This article explores the historical relations between the political movement established by Juan Domingo Perón –Peronist Justicialism – and the University in Argentina. The text analyses especially the antistatal political inflection of Menemism, the 90´s version of Peronism. The liberal orthodox economic policy of Carlos Saúl Menem Government (1989-1995 and 1995- 1999 was responsible for the implementation of the Reform Program for Higher Education (RPHE, financed by the World Bank, which results, among other consequences, brought the payment of tuitions by the students (the arancelamiento The contemporary adjustment process of the Argentine Universitary System, which was ideologically based on 1918 Cordoba Reform Movement, is part of the broader landscape of 90´s world changes

Industrial ecotoxicology "acid rain".

Science.gov (United States)

Astolfi, E; Gotelli, C; Higa, J

1986-01-01

The acid rain phenomenon was studied in the province of Cordoba, Argentina. This study, based on a previously outlined framework, determined the anthropogenic origin of the low pH due to the presence of industrial hydrochloric acid wastage. This industrial ecotoxicological phenomenon seriously affected the forest wealth, causing a great defoliation of trees and shrubs, with a lower effect on crops. A survey on its effects on human beings has not been carried out, but considering the corrosion caused to different metals and its denouncing biocide effect on plants and animals, we should expect to find some kind of harm to the health of the workers involved or others engaged in farming, and even to those who are far away from the polluting agent.

The multiple applications of the nuclear techniques in Argentina; Las multiples aplicaciones de la tecnologia nuclear en Argentina

Energy Technology Data Exchange (ETDEWEB)

Manzini, Alberto C [Comision Nacional de Energia Atomica, Buenos Aires (Argentina). Programa de Radioisotopos y Aplicaciones

2001-07-01

A review is given of the use of nuclear technology in Argentina, especially in the field of the production of radioisotopes and radiopharmaceuticals, nuclear medicine, and industrial applications. The applications of ionizing radiation are also reviewed.

Acute intermittent porphyria in Argentina: an update.

Science.gov (United States)

Cerbino, Gabriela Nora; Gerez, Esther Noemí; Varela, Laura Sabina; Melito, Viviana Alicia; Parera, Victoria Estela; Batlle, Alcira; Rossetti, María Victoria

2015-01-01

Porphyrias are a group of metabolic diseases that arise from deficiencies in the heme biosynthetic pathway. A partial deficiency in hydroxymethylbilane synthase (HMBS) produces a hepatic disorder named Acute Intermittent Porphyria (AIP); the acute porphyria is more frequent in Argentina. In this paper we review the results obtained for 101 Argentinean AIP families and 6 AIP families from foreign neighbour countries studied at molecular level at Centro de Investigaciones sobre Porfirinas y Porfirias (CIPYP). Thirty-five different mutations were found, of which 14 were described for the first time in our population. The most prevalent type of mutations was the missense mutations (43%) followed by splice defects (26%) and small deletions (20%). An odd case of a double heterozygous presentation of AIP in a foreign family from Paraguay is discussed. Moreover, it can be noted that 38 new families were found carrying the most frequent mutation in Argentina (p.G111R), increasing to 55.66% the prevalence of this genetic change in our population and adding further support to our previous hypothesis of a founder effect for this mutation in Argentina. Identification of patients with an overt AIP is important because treatment depends on an accurate diagnosis, but more critical is the identification of asymptomatic relatives to avoid acute attacks which may progress to death.

Population structure in Argentina.

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Marina Muzzio

Full Text Available We analyzed 391 samples from 12 Argentinian populations from the Center-West, East and North-West regions with the Illumina Human Exome Beadchip v1.0 (HumanExome-12v1-A. We did Principal Components analysis to infer patterns of populational divergence and migrations. We identified proportions and patterns of European, African and Native American ancestry and found a correlation between distance to Buenos Aires and proportion of Native American ancestry, where the highest proportion corresponds to the Northernmost populations, which is also the furthest from the Argentinian capital. Most of the European sources are from a South European origin, matching historical records, and we see two different Native American components, one that spreads all over Argentina and another specifically Andean. The highest percentages of African ancestry were in the Center West of Argentina, where the old trade routes took the slaves from Buenos Aires to Chile and Peru. Subcontinentaly, sources of this African component are represented by both West Africa and groups influenced by the Bantu expansion, the second slightly higher than the first, unlike North America and the Caribbean, where the main source is West Africa. This is reasonable, considering that a large proportion of the ships arriving at the Southern Hemisphere came from Mozambique, Loango and Angola.

Case study - Argentina

International Nuclear Information System (INIS)

Diaz, E.

1986-01-01

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

Evaluation of Tillandsia capillaris Ruiz amd Pav. f. capillaris as biomonitor of atmospheric pollution in Argentina

Energy Technology Data Exchange (ETDEWEB)

Pignata, M.L. [Univ. Nacional de Cordoba, Cordoba (Argentina). Facultad de Ciencias Exactas, Fisicas y Naturales]|[Instituto Multidisciplinario de Biologia Vegetal (IMBIV-UNC), Cordoba (Argentina); Wannaz, E.D.; Martinez, M.S.; Caminotti, G. [Univ. Nacional de Cordoba, Cordoba (Argentina). Facultad de Ciencias Exactas, Fisicas y Naturales

2002-07-01

The behaviour of Tillandsia capillaris Ruiz and Pav. f. capillaris, when exposed to atmospheric pollutants, was assessed by measuring chemical parameters indicating foliar damage and the contents of some heavy metals. Samples were transplanted to three sites in the City of Cordoba and were collected back after 15, 30, 60 and 90 days of exposure. At the same time, samples coming from the collection site were analyzed for each of said exposure times. Chlorophylls, hydroperoxy conjugated dienes, water contents, malondialdehyde, sulfur, Cu, Pb, Ni, Co, Mn, Zn and Fe were measured in the samples. A Foliar Damage Index was calculated from some of these parameters. (orig.)

[The demographic and occupational characteristics of Italian migrants to Argentina, 1880-1930].

Science.gov (United States)

Cacopardo, M C; Moreno, J L

1984-09-01

"This essay studies...the demographic and socio-professional characteristics of the Italian emigrants in Argentina during the period 1880-1930. Besides a reconstruction of the demographic variables (age, sex, mortality, and fertility) in the historical series, the essay also depicts the professional profile of the Italians in Argentina...." (summary in ENG, FRE) excerpt

Psychotherapy in Argentina: a clinical case from an integrative perspective.

Science.gov (United States)

Gómez, Beatriz

2007-08-01

The article describes psychotherapy practice in Argentina. It outlines the main features of training and regulation of clinical psychologists. A brief description of the main treatment approaches and the major current challenges is presented. Subsequently it delineates the probable treatment locations and options for a 30-year-old woman, Mrs. A, seeking psychological help in Argentina. The case is then considered from an integrative perspective starting with the intake process, which includes a comprehensive pretreatment assessment followed by the treatment plan. Its course is described as composed of four stages: (1) psychoeducational initial intervention, (2) psychotherapy for symptom alleviation, (3) marital treatment, and (4) psychoeducational final intervention. Posttreatment evaluation and possible outcome and prognosis are presented, as well as factors that might prevent improvement. The article ends with a hopeful view of the future role of psychotherapy in Argentina. (c) 2007 Wiley Periodicals, Inc.

Peronism and the origin of workers in Argentina Peronismo e oriegem dos operários na Argentina

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Carlos R. Etulain

2007-05-01

Full Text Available This article analyses the way the workers and popular fronts inserted themselves in the Peronism when it appeared in the 40’s, in Argentina. Showing the adhesion of the different sectors of Argentinean workers, it presents the researchers opinion on the subject. The historical period focuses the first and the second period of Peron as president (1946-1955. Keywords: Peronism. Left. Workers. Unionism. Populism. New Workers. O trabalho analisa a forma como os trabalhadores e os setores populares se inseriram no peronismo uma vez do seu surgimento, nos anos 40, na Argentina. Apontando para a adesão dos diferentes setores de trabalhadores argentinos, o artigo apresenta as posições dos investigadores do assunto. O período histórico se centra na primeira e segunda presidência de Perón (1946-1955. Palavras-chave: Peronismo. Esquerda. Trabalhadores. Sindicalismo. Populismo. Trabalhadores Novos.

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

Directory of Open Access Journals (Sweden)

Mario Rapoport

2009-06-01

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

Ricardo Dyrgalla (1910-1970), pioneer of rocket development in Argentina

Science.gov (United States)

de León, Pablo

2009-12-01

One of the most important developers of liquid propellant rocket engines in Argentina was Polish-born Ricardo Dyrgalla. Dyrgalla immigrated to Argentina from the United Kingdom in 1946, where he had been studying German weapons development at the end of the Second World War. A trained pilot and aeronautical engineer, he understood the intricacies of rocket propulsion and was eager to find practical applications to his recently gained knowledge. Dyrgalla arrived in Argentina during Juan Perón's first presidency, a time when technicians from all over Europe were being recruited to work in various projects for the recently created Argentine Air Force. Shortly after immigrating, Dyrgalla proposed to develop an advanced air-launched weapon, the Tábano, based on a rocket engine of his design, the AN-1. After a successful development program, the Tábano was tested between 1949 and 1951; however, the project was canceled by the government shortly after. Today, the AN-1 rocket engine is recognized as the first liquid propellant rocket to be developed in South America. Besides the AN-1, Dyrgalla also developed several other rockets systems in Argentina, including the PROSON, a solid-propellant rocket launcher developed by the Argentine Institute of Science and Technology for the Armed Forces (CITEFA). In the late 1960s, Dyrgalla and his family relocated to Brazil due mostly to the lack of continuation of rocket development in Argentina. There, he worked for the Institute of Aerospace Technology (ITA) until his untimely death in 1970. Ricardo Dyrgalla deserves to be recognized among the world's rocket pioneers and his contribution to the science and engineering of rocketry deserves a special place in the history of South America's rocketry and space flight advocacy programs.

Coleópteros acuáticos de lagunas situadas en el noroeste de la provincia de Corrientes, Argentina Aquatic Coleoptera from ponds in the northwest of Corrientes Province, Argentina

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María C. Gomez Lutz

2012-06-01

Full Text Available El objetivo de este estudio es contribuir al conocimiento de la biodiversidad de coleópteros acuáticos del NE argentino. Los sitios de muestreo corresponden a dos lagunas permanentes ubicadas en el departamento Capital de la provincia de Corrientes, Argentina. Los muestreos fueron realizados desde octubre de 2010 a marzo de 2011. En total, 107 especies de coleópteros, incluidas en 40 géneros y ocho familias fueron registradas: Haliplidae, Dytiscidae, Noteridae, Dryopidae, Hydrochidae, Hydrophilidae, Limnichidae y Scirtidae. La especie Berosus hamatus Knisch es un nuevo registro para la Argentina. Dos familias (Haliplidae y Dryopidae, cuatro géneros (Haliplus Latreille; Pelonomus Erichson, Onopelmus Spangler, Phaenonotum Sharp y 14 especies son citados por primera vez para la provincia de Corrientes.This study aims to improve the knowledge of aquatic Coleoptera biodiversity in northeastern Argentina. The sampling sites correspond to two permanent ponds located in the department Capital of Corrientes Province, Argentina. The samples were collected between October 2010 and March 2011. A total of 107 species of beetles, including 40 genera and 8 families were recorded: Haliplidae, Dytiscidae, Noteridae, Dryopidae, Hydrochidae, Hydrophilidae, Limnichidae and Scirtidae. Berosus hamatus Knisch is a new record for Argentina. Two families (Haliplidae and Dryopidae, four genera (Haliplus Latreille; Pelonomus Erichson, Onopelmus Spangler, Phaenonotum Sharp and 14 species are cited for the first time for Corrientes Province.

Las negociaciones para el acuerdo cinematográfico de 1948 entre Argentina y España (1939-1948 / The Film Agreement Negotiations: Argentina and Spain (1939-1948

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Emeterio Díez Puertas

2016-08-01

Full Text Available La política expansionista del cine argentino y, desde 1942, razones de supervivencia ante el acoso de Hollywood empujan a la Asociación de Productores de Películas Argentinas (APPA a presionar al gobierno español para que firme un acuerdo cinematográfico. Este se rubrica en1948, tras casi diez años de tensas negociaciones. Pero los artículos del acuerdo, más que responder a los deseos de la APPA, reflejan los intereses y la hermandad alcanzada por el franquismo y el peronismo.Palabras clave: España, Argentina, comercio cinematográfico, Asociación de Productores de Películas Argentinas.AbstractThe expansionist policy of Argentine cinema and the power of Hollywood's entertainment industry since 1942, push the Argentinean Film Producers Association (APPA to put pressure on the Spanish government to sign a film agreement. This was signed in 1948, after almost ten years of tense negotiations. However, the articles of the agreement, rather than responding to the wishes of the APPA, reflect the treaty of friendship between the Franco regime and the Peronism.Keywords: Spain, Argentina, Movie Trade, Argentinean Film Producers Association.

La llegada de Gramsci a la Argentina: una relectura sobre Héctor P. Agosti-Gramsci’s Influence in Argentina: a New Reading of the Work of Héctor P. Agosti

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Alexia Massholder

2011-12-01

Full Text Available With few exceptions, the impact of the work of Antonio Gramsci in Argentina is generally associated with the so called “Argentinian gramscians”, many of whom met around the journal Pasado y Presente, headed by José Aricó, without considering Gramsci’s earlier influence. However, it is often forgotten that the first introduction of Gramsci to Argentina was by the hand of Héctor P. Agosti. Agosti influenced many young intellectuals who subsequently congregated around Aricó. Beyond the observations made in this article regarding Agosti’s detractors, the aim here is to contribute to the diffusion, and presentation to the public of the thought of one of the most remarkable intellectuals that have arisen in the Communist Party of Argentina. This article also delves into relatively unexamined connections between the works of Agosti and Grasmci, highlighting the role played by the former in introducing the works of this Italian intellectual into Argentina during that period.

Dermatite de contato por metais: prevalência de sensibilização ao níquel, cobalto e cromo Metal contact dermatitis: prevalence of sensitization to nickel, cobalt and chromium

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Ida Duarte

2005-04-01

Full Text Available FUNDAMENTOS: Dermatite de contato (DC por metais é dermatose comum em diversos grupos populacionais. OBJETIVOS: Caracterizar o grupo com DC ao níquel, cromo e cobalto na população estudada, determinar a prevalência da sensibilização aos mesmos, verificar as combinações de testes positivos e comparar com a literatura. CASUÍSTICAS E MÉTODOS: Foram realizados testes epicutâneos em 1.208 pacientes com hipótese diagnóstica de DC. Selecionaram-se aqueles com testes positivos aos metais. RESULTADOS: Obtiveram-se 404 pacientes (33,5% da amostra com pelo menos um teste positivo ao níquel e/ou cobalto e/ou cromo. Foram 487 testes positivos a metais, correspondendo a 48% de todos os testes positivos. A maioria dos pacientes era do sexo feminino (72%, de cor branca (54%, com idade entre 40 e 49 anos (25% empregada na área de limpeza (59%. Dos 404, 329 (81,5% foram positivos a apenas um tipo de metal, sendo 60% com teste positivo ao níquel, 13% ao cromo e 8,5% ao cobalto. Cerca de 18,5% apresentaram testes positivos a dois ou três metais, sendo a associação níquel/cobalto a mais comum. CONCLUSÕES: A sensibilização aos metais foi de 48%, entre os testes positivos e ocorreu principalmente em mulheres da cor branca, na faixa etária de 40 a 49 anos e sem correlação ocupacional. A maioria apresentou sensibilização a apenas um metal. Esses dados são semelhantes aos de outros trabalhos já publicados.BACKGROUND: Metal contact dermatitis (nickel, cobalt and chromium is a common dermatosis among several population groups. OBJECTIVE: To describe the individuals with metal contact dermatitis in the group studied, to determine the prevalence of skin sensitization by nickel, cobalt and chromium, to verify the positive test combinations among these three substances and to compare our results with the literature. PATIENTS AND METHODS: Patch test was performed in 1208 patients with a presumptive diagnosis of contact dermatitis. Those with

Un género nuevo de Platynini (Coleoptera: Carabidae de la Argentina A new genus of Platynini (Coleoptera: Carabidae from Argentina

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Sergio ROIG-JUÑENT

2003-07-01

Full Text Available Los Platynini constituyen un grupo de carábidos distribuidos ampliamente en América del Sur, existiendo la mayor diversidad de especies en las regiones tropicales de altura de Los Andes. En la Argentina y Chile, la mayoría de las especies de Platynini se hallan distribuidas en áreas extracordilleranas, conociéndose pocos datos para la región Andina. A partir de recolecciones realizadas en la Precordillera y Cordillera de los Andes en Mendoza (Argentina, se hallaron ejemplares pertenecientes a dos especies de dicha tribu de carábidos. El estudio de este material ha permitido establecer dos nuevas especies cuyos caracteres justifican su agrupación en un nuevo género, Austroglyptolenus nov. gen. La presencia de una carena dorsal en la protibia y el poseer la base del lóbulo medio esclerotizado agruparían a Austroglyptolenus nov. gen. con los géneros Glyptolenus Bates y Glyptolenoides Perrault. De ellos se diferencia por la forma de los metatarsitos, ausencia de diente en el saco interno y la presencia de un anillo de espículas en la bursa copulatriz. Por ello las especies de Austroglyptolenus nov. gen., A. mendozensis sp. nov. y A. precordillerae sp. nov. están más relacionadas con las especies de América del Sur tropical que con los Platynini australes extramontanos de la Argentina y Chile. En este aporte se proveen las descripciones e ilustraciones del género y de las nuevas especies, así como también claves para identificar los nuevos taxones.Platynini is a widespread tribe of carabids in South America, having the largest diversity of species in the tropical highlands of Andes. In Argentina and Chile, most of the platinine species are distributed in extra-Andean regions. Several specimens of platynine have been found in samples from the Precordillera and the Andes in Mendoza (Argentina. The study of these materials revealed two new species, whose characters justify the creation of a new genus, Austroglyptolenus gen. nov. The

CROSSROADS BETWEEN EDUCATION POLICIES AND INDIGENOUS LANGUAGES MAINTENANCE IN ARGENTINA

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Ana Carolina Hecht

2010-06-01

Full Text Available Process of language shift is explained by many researchers since linguistic and anthropological perspectives. This area focuses on the correlations between social processes and changes in systems of use of a language. This article aims to address these issues. In particular, we analyze the links between educational-linguistic policy and the maintenance of the languages spoken in Argentina. In doing so, we explore this field taking into account the linguistic and educational policies implemented about indigenous languages in Argentina.

La crisis Argentina y los medios de comunicación

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Federico Rey Lennon

2015-01-01

Full Text Available La crisis económica en Argentina ha sido difícil: revueltas, saqueos, renuncias cacerolazos, angustias, escepticismo, corridas bancarias. Los medios de comunicación transformados en actores sociales desempeñando papeles claves de control político, en un medio de escepticismo e inutilidad de la clase dirigente Argentina y de los políticos. El artículo intenta explicar el papel que le cupo a los medios en la construcción de esta realidad.

Rocky Mountain spotted fever in Argentina.

Science.gov (United States)

Paddock, Christopher D; Fernandez, Susana; Echenique, Gustavo A; Sumner, John W; Reeves, Will K; Zaki, Sherif R; Remondegui, Carlos E

2008-04-01

We describe the first molecular confirmation of Rickettsia rickettsii, the cause of Rocky Mountain spotted fever (RMSF), from a tick vector, Amblyomma cajennense, and from a cluster of fatal spotted fever cases in Argentina. Questing A. cajennense ticks were collected at or near sites of presumed or confirmed cases of spotted fever rickettsiosis in Jujuy Province and evaluated by polymerase chain reaction assays for spotted fever group rickettsiae. DNA of R. rickettsii was amplified from a pool of A. cajennense ticks and from tissues of one of four patients who died during 2003-2004 after illnesses characterized by high fever, severe headache, myalgias, and petechial rash. The diagnosis of spotted fever rickettsiosis was confirmed in the other patients by indirect immunofluorescence antibody and immunohistochemical staining techniques. These findings show the existence of RMSF in Argentina and emphasize the need for clinicians throughout the Americas to consider RMSF in patients with febrile rash illnesses.

The Tribe Anisoscelini (Hemiptera: Heteroptera, Coreidae) in Argentina.

Science.gov (United States)

Coscarón, María Del Carmen; Pall, José Luis

2015-10-23

Eight genera and 21 species of the tribe Anisoscelini (Coreidae, Coreinae) are recorded in Argentina: Anisoscelis foliaceus (Fabricius); Coribergia declivicollis (Berg); Dalmatomammurius vandoesburgi (Brailovsky); Holymenia hystrio (Fabricius); Leptoglossus chilensis (Spinola); L. cinctus (Herrich-Schaeffer); L. concolor Walker; L. crassicornis (Dallas); L. dentatus Berg; L. fasciatus (Westwood); L. gonagra (Fabricius); L. impictus (Stål); L. ingens (Mayr); L. neovexillatus Allen; L. quadricollis (Westwood); L. stigma (Herbst); L. vexillatus (Stål); L. zonatus (Dallas); Phthia lunata (Fabricius); Phthiacnemia picta (Drury) and Ugnius kermesinus (Linnaeus). A key to genera belonging to the tribe is provided. L. stigma is recorded for the first time in Argentina with new locality records for La Rioja, Salta and San Juan.

Dictadura y relaciones internacionales: Argentina y Chile entre 1829 y 1852

OpenAIRE

Lacoste, Pablo

2001-01-01

The study analizes the relationaship between Argentina and Chile during Rosas’ dictatorship in Buenos Aires (1829-1852) in comparison with the previous period (1810-1829) and the later (1852-1881). Three parameters are considered: the treaties signature, the existence of diplomatic representations and the comercial policies. The study of the mentioned parameters showes the bilateral relationship deterioration during the dictatorship. The study analizes the relationaship between Argentina a...

Argentina.

Science.gov (United States)

1993-02-01

Background notes on Argentina provide a profile of the geography, selected demographic features, government and economic conditions. Descriptive text includes a discussion of the people, their history and political conditions, the government and officials, the state of the economy, their defense, foreign relations, and relations with the US. The 1992 estimated population was about 33 million of whom 97% are European (mostly Spanish and Italian). Religions represented are Roman Catholic (92%), Protestant (2%), Jewish (2%), and other (4%). Adult literacy is 95%. 36% are engaged in industry and commerce, 20% in services, 19% in agriculture, 6% in transport and communications, and 19% other. Per capita gross domestic product was $4,500. There are only 50,000 native Indians remaining in peripheral provinces. The population enjoys a high standard of living and a low growth rate. The country was shaped by dominant forces: modern agricultural techniques and the integration of the country into the world economy. Foreign investment aided the economic revolution. Conservative and radical rule has swung the country back and forth politically since 1916. Colonel Juan Domingo Peron led a successful military coup in 1943 and was elected in 1946. Policies were instituted to give a greater voice to the working class, and with the influences of his wife, women's groups. In 1955, he was ousted by the military, which failed to revive the economy and quiet increasing terrorism. After a number of difficult elections, Peron was reinstated as president in 1973. Extremists on the left and right threatened public order; the military as a consequence imprisoned persons indefinitely. Peron's wife succeeded him after his death, but was removed from office in the military coup of 1976. Basic human rights were violated during this period. By 1983, a fair election was held and support increased for a democratic system. In 1989, Carlos Saul Menem, a Peronist candidate, won and established

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

HPV Detection and genotyping in males from the city of Córdoba, Argentina Detección y genotipificación de VPH en varones de la ciudad de Córdoba, Argentina

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F. Venezuela

2010-09-01

Full Text Available A wide range of human papillomavirus (HPV types can infect the anogenital region of males. Although there is a vast knowledge on HPV infections in women as well as on their association with cervical cancer, the study of HPV infections in males is scarce and controversial. The aim of the present work was to detect and typify HPV infections of the anogenital region in males and analyze the associated risk factors in the population studied. Anogenital samples from 37 patients (30 of whom were HIV carriers attending the Infectology Service at the Hospital Nacional de Clínicas in Córdoba, Argentina, were studied. Nine of these patients tested HPV-positive and five out of these nine were found to have mixed infections, being 18 and 61 the most frequent genotypes. There was a significant correlation between the HPV-positive patients and those having an HPV-compatible lesion or AIDS. The present work is the first study in the city of Cordoba which contributes relevant results to the knowledge of HPV infection and to the possible implementation of measures for its prevention.Un amplio espectro de tipos de virus papiloma humano (VPH puede infectar la zona anogenital de los varones. Si bien existe un vasto conocimiento de la infección por VPH en las mujeres y su asociación con el cáncer de cérvix, el estudio de la infección por VPH en los varones ha sido escaso y sus resultados controvertidos. El presente trabajo tuvo como objetivo detectar y tipificar infecciones por VPH en la región anogenital de varones y analizar los factores de riesgo asociados en la población estudiada. Se estudiaron muestras anogenitales de 37 pacientes (30 portadores del VIH que asistieron al Servicio de Infectología del Hospital Nacional de Clínicas de la ciudad de Córdoba. Nueve resultaron positivas para VPH, de las que 5 correspondían a infecciones mixtas. Los genotipos de mayor frecuencia fueron el 18 y el 61. Hubo una correlación significativa entre los

Payenia volcanic province, southern Mendoza, Argentina

DEFF Research Database (Denmark)

Søager, Nina; Holm, Paul Martin; Llambias, Eduardo Jorge

2013-01-01

The Pleistocene to Holocene Payenia volcanic province is a backarc region of 60,000 km2 in Mendoza, Argentina, which is dominated by transitional to alkaline basalts and trachybasalts. We present major and trace element compositions of 139 rocks from this area of which the majority are basaltic...

Argentina and Brazil's competition over Bolivian's resources, needs and means half a century later

International Nuclear Information System (INIS)

Behrens, A.

1988-01-01

For fifty years Bolivia has managed to achieve an unstable balance of power between its most powerful neighbours, while still keeping together an ethnically diverse and poorly integrated country. However, prospects are grim. Bolivia's most important trade able goods face receding markets and natural gas exports to Argentina are likely to dwindle as that country develops its own domestic fields. Brazil, could substitute for Argentina but it needs to overcome a bitter legacy of commercial frustration with Bolivia and the opposition of Brazil's national oil company to natural gas imports. Moreover, Argentina may soon be a net exporter of natural gas as well. However, neither Brazil nor Argentina, both of whom share a sizeable frontier with Bolivia should not want to see her under too much distress. Pooling the natural gas resources of Argentina and Bolivia could cater for more orderly and reliable regional trade than in the past. The combined resources could be managed by a private enterprise (Gas del Plata) with all three countries as major shareholders. Reliable natural gas supplies may even help Brazil to revert its autarchic developmental trends. (author)

[Growth of breastfed and bottle-fed infants up to 2 years of age: CLACYD (Lactation, Alimentation, Growth and Development) study 1993-1995].

Science.gov (United States)

Agrelo, F; Lobo, B; Chesta, M; Berra, S; Sabulsky, J

1999-07-01

Studies done in various countries show important differences in the growth of breastfed and bottle-fed children. In addition, it has been found that breast-fed children grow more slowly beginning at the age of 2 or 3 months in comparison with the reference pattern of the U.S. National Center for Health Statistics (NCHS) and the World Health Organization (WHO). These results cast doubt on whether maximum growth is the same as optimal growth. The objective of this study was to compare the growth in weight and length, from birth to 24 months, for a group of children who were breast-fed with that of a group who were bottle-fed. The study was also intended to describe the growth of the breastfed group in relation to the NCHS/WHO norms and a WHO "12-month breast-fed pooled data set." For this research, data were analyzed from the "Cordoba: lactation, feeding, growth, and development" study (or CLACYD study, for its Spanish-language acronym). That study looked at a representative cohort, stratified by social class, of children born in 1993 in the city of Cordoba, Argentina. The researchers analyzed anthropometric data on 74 children who were breast-fed during the first year of life and on 108 bottle-fed children. The data had been recorded, using standardized techniques, at birth and at 6, 12, and 24 months of age. Both groups were homogenous with respect to the age and schooling of the parents, social stratum, birth order, maternal height, and child's weight and length at birth. The living conditions (housing construction and availability of water and sewer services) were better among the group that was bottle-fed (P = 0.04). The breast-fed children had a lower weight and a shorter length at 6, 12, and 24 months than did the bottle-fed children. The breast-fed children also showed a slowing in growth with respect to the NCHS/WHO guidelines beginning in the second semester. This indicates that the NCHS/WHO norms are not totally adequate for evaluating the growth of breast

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

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Mercedes Mariano

2015-08-01

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

Tobacco industry targeting youth in Argentina

Science.gov (United States)

Braun, S; Mejia, R; Ling, P M; Pérez-Stable, E J

2013-01-01

Background/aim Argentina has one of the highest cigarette smoking rates among both men and women in the Americas and no legislated restrictions on tobacco industry advertising. The tobacco industry has traditionally expanded markets by targeting adolescents and young adults. The objective of this study was to determine whether and how the tobacco industry promotes cigarettes to adolescents in Argentina. Methods We conducted a systematic search of tobacco industry documents available through the internet dated between 1995 and 2004 using standard search terms to identify marketing strategies in Argentina. A selected review of the four leading newspapers and nine magazines with reported high readership among adolescents was completed. The selected print media were searched for tobacco images and these were classified as advertisements if associated with a commercial product or as a story if not. Results The tobacco industry used market segmentation as a strategy to target Argentinean consumers. British American Tobacco (BAT) undertook a young adult psychographic study and classified them as “progressives”, “Jurassics” or “conservatives” and “crudos” or “spoiled brats”. BAT marketed Lucky Strike to the “progressives” using Hollywood movies as a vehicle. The tobacco industry also targeted their national brands to the conservatives and linked these brands with “nationalistic values” in advertising campaigns. Philip Morris promoted Marlboro by sponsoring activities directed at young people and they launched the 10 cigarettes packet as a starter vehicle. Conclusions The tobacco industry used psychographic segmentation of the population and developed advertising strategies focused on youth. Tobacco control researchers and advocates must be able to address these strategies in counter-marketing interventions. PMID:18299308

Two new species of Psectrascelis (Coleoptera: Tenebrionidae from western Argentina

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Gustavo E. FLORES

2007-01-01

Full Text Available Se describen dos nuevas especies del género Psectrascelis Solier (Pimeliinae: Nycteliini del oeste de Argentina, P. argentina sp. nov. a gran altitud en la Precordillera de San Juan y P. telteca sp. nov. en la llanura de Mendoza, y se las incluye en la clave mas reciente del género. Se proveen datos sobre la distribución y el hábitat, así como fotografías de los adultos y pronotos y dibujos de los genitalia masculinos.

La muerte del príncipe Don Juan. Exequias y duelo en Córdoba y Sevilla durante el otoño de 1497 = The Death of Prince Juan. Funeral Rites and Mourning in Cordoba and Seville during the Autumn of 1497

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Margarita Cabrera Sánchez

2018-05-01

Full Text Available La finalidad de este trabajo es estudiar las circunstancias de la muerte del príncipe don Juan, los ritos post mortem y las ceremonias fúnebres que tuvieron lugar en Córdoba y Sevilla. Además, nos hemos detenido a analizar cómo pudieron transcurrir los primeros años de su vida y su adolescencia, ya que los testimonios consultados revelan una salud frágil, que, probablemente, pudo precipitar su temprano fallecimiento. Las numerosas fuentes a las que hemos tenido acceso nos han permitido obtener datos inéditos sobre el ceremonial funerario, las manifestaciones de duelo y el volumen de gastos al que tuvieron que hacer frente los concejos de Córdoba y Sevilla para despedir, como la ocasión merecía, al príncipe heredero.   The purpose of this paper is to study the circumstances of the death of prince Juan, the post mortem rites and the funeral ceremonies that took place in Cordoba and Seville. In addition, we have analysed how the first years of his life and adolescence may have taken place, since the testimonies consulted reveal a fragile health that probably could have determined his early death. The numerous sources to which we have had access allowed us to obtain unpublished information on the funerary ceremonial, the demonstrations of mourning and the level of expenditure that was assumed by the councils of Cordoba and Seville to pay their last respects to the heir prince.

Measured radon inside housings the Republic Argentina

International Nuclear Information System (INIS)

Canoba, A.; Arnaud, M.; Lopez, F.; Oliveira, A.A.

1998-01-01

They have been measured the radon concentration in houses in different city's in Argentina Republic. For they were used it as method mensuration detectors appearances nuclear detecting electrets and detectors based on the adsorption radon in activated carbon

Cultural Diversity: "Reports from Brazil and Argentina"

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Célia Regina Rossi

2007-06-01

Full Text Available This article tells two experiences of projects carried through in schools of basic education whose thematic it was the work with the cultural diversity, the valuation of other cultures and reflections on the proper culture The work was carried through in two schools: one in the state of São Paulo, the city of Rio Claro where as the thematic one worked was the Hip-Hop and cultural manifestations local Brazilians the second in the capital of a Argentina province, in the city of Paraná where it worked the contact and the relation enter the cultural manifestations of Brazil and Argentina The central objective of this work was to think ways that could lead to the construction of a school that it considered the differences and the learning that happens when these (the differences they are in relation.

Nuevos registros del género Cissampelos (Menispermaceae para la flora Argentina

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María Peña-Chocarro

2015-01-01

Full Text Available Cissampelos andromorpha DC. y C. arenicolaM. Nee & R. Ortiz se citan por primera vez para la flora Argentina. Se presentan descripciones e imágenes de pliegos de herbario de las especies mencionadas y se actualizan sus distribuciones geográficas. Se incluye una clave para la identificación de las cuatro especies de Cissampelospresentes en Argentina

Conflicto socioambiental y agronegocio: análisis histórico del conflicto en Malvinas Argentinas, Córdoba, Argentina.

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Leandro Carlos Barros

2016-12-01

Full Text Available En el presente artículo nos proponemos reflexionar sobre las formas de resistencia surgidas debido a los complejos procesos socioeconómicos y políticos vinculados a la expansión de los agronegocios, en el marco de la consolidación de un capitalismo extractivo en  gran parte de los países de América Latina.  Analizaremos en perspectiva sociohistórica el conflicto socioambiental en la localidad de Malvinas Argentinas, provincia de Córdoba, Argentina, en torno a la pretensión de la empresa Monsanto de radicar allí una planta de procesamiento de maíz transgénico. Para esto, pondremos el foco en la organización en asambleas de los actores sociales movilizados contra la instalación, en las acciones desplegadas y en el carácter multiescalar del conflicto.

Argentina 1967-70. Un tentativo fallito di stabilizzazione.

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G. MAYNARD

2014-08-01

Full Text Available Between 1950 and 1966 prices in Argentina rose at an average annual rate exceeding 25 percent. There have been several attempts to stabilise the situation, notably in 1966 when the military government took command. This attempt appeared to have considerable initial success, however, by 1970 the inflation rate began to accelerate again. This article describes the nature and characteristics of the stabilisation policy pursued in 1967-69. The author explains why, despite its initial success, in the end it broke down. Implications for the structuralist-monetarist controversy are then drawn. Finally, some conclusions that can be drawn for long-run development strategy and short-run stabilisation policy in Argentina are suggested.JEL: E31, E52, E60

Fruit fly eradication: Argentina

International Nuclear Information System (INIS)

2003-01-01

Fruit exports account for 9% of Argentina's total agricultural exports and generate annually close to $450 million. This could be increased but for fruit flies that cause damage equivalent to 15% to 20% of present production value of fruit and also deny export access to countries imposing quarantine barriers. The Department of Technical Co-operation is sponsoring a programme, with technical support from the Joint FAO/IAEA Division, to eradicate the Mediterranean fruit fly using the Sterile Insect Technique (SIT). (IAEA)

Primer registro de Vespula vulgaris (Hymenoptera: Vespidae) en la Argentina

OpenAIRE

Maité MASCIOCCHI; Jacqueline R. BEGGS; James M. CARPENTER; Juan C. CORLEY

2010-01-01

Vespula vulgaris (Linnaeus) es un véspido social nativo de la región Holártica. En este trabajo reportamos la primera detección de esta especie en Argentina. Obreras de esta avispa fueron capturadas cerca de la ciudad de San Carlos de Bariloche (Argentina) en Febrero de 2010, mientras se tomaban muestras de otra avispa invasora, Vespula germanica (Fabricius) o chaqueta amarilla, de morfología externa y hábitos similares a la anteriormente mencionada. Además, detallamos algunos caracteres de i...

Disgenesia gonadal mixta como forma de presentación de un desorden de la diferenciación sexual de causa cromosómica

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María del Carmen Valdés Alonso

Full Text Available La diferenciación sexual es un proceso genéticamente determinado y controlado, que puede ser alterado por diferentes tipos de mutaciones genéticas, o por el efecto de hormonas u otros disruptores ambientales que actúan sobre el embrión, resultando en la formación de genitales externos que no se corresponden con el sexo genético y con los genitales internos. La disgenesia gonadal mixta clasifica en los desórdenes de la diferenciación sexual de causa cromosómica. Se describe un paciente de un año de edad que es atendido en el Hospital Pediátrico “Juan Manuel Márquez”, por presentar genitales externos atípicos. El diagnóstico del paciente fue de disgenesia gonadal mixta, y se realizó con los complementarios siguientes: ecografía ginecológica, estudios hormonales y cariotipo. El tratamiento instaurado inicialmente, fue quirúrgico en dos tiempos operatorios, y el seguimiento hormonal hasta la pubertad (14 años, cuando se inició terapia de reemplazo hormonal según lo establecido por la edad de la paciente.

NOVEDADES EN CALIBRACHOA (SOLANACEAE Y NOTAS TAXONÓMICAS SOBRE EL GÉNERO PARA LA ARGENTINA

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Julián A. Greppi

2013-01-01

Full Text Available Se describe e ilustra una nueva subespecie de Calibrachoa para Argentina y Brasil: C. linoides subsp. furcata. Se excluye a C. heterophylla de la flora argentina. Se consideran a C. linearis y a Petunia thymifolia f. gracilis como nuevos sinónimos de C. thymifolia y se esclarecen interpretaciones erróneas de dos especies (C. pubescens y C. humilis, previamente citadas para Argentina. Se designan lectotipos para Fabiana thymifolia, Petunia thymifolia f. gracilis y Salpiglossis linearis (= C. thymifolia.

Brasil e Argentina: uma análise do comércio de produtos da Linha Branca

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Marcelo Gregorio

2015-06-01

Full Text Available Resumo: Este trabalho possui como objetivo analisar o comércio bilateral entre o Brasil e a Argentina, em especial, para os produtos da linha branca. Foi contextualizado os principais acordos entre os dois países, com ênfase, após a união aduaneira oriunda do Mercado Comum do Sul – MERCOSUL, como principal mecanismo para o livre comércio. Neste contexto, utilizou-se do Índice de Vantagens Comparativas Reveladas – IVCR e o Índice de Orientação Regional – IOR, no período que compreende 2002-2011. Pode-se concluir que o Brasil possui evidente competitividade em relação a indústria argentina, em função disso, foi observado no período analisado que o setor de linha branca foi alvo de medidas protecionistas por parte da Argentina. Palavras-chave: comércio, Brasil-Argentina, produtos da linha branca. *** Resumen: Este trabajo tiene como objetivo analizar el comercio bilateral entre Brasil y Argentina, en particular para los productos de línea blanca. Fue contextualizado los principales acuerdos entre los dos países, con énfasis, después de la unión aduanera que viene del Mercado Común del Sur - MERCOSUR, como el mecanismo principal para el libre comercio. En este contexto, se utilizó el Índice de Revelado comparativo Advantage - IVCR y el Índice de Orientación regional - IOR, en el período que comprende desde 2002 hasta 2011. Se pudo concluir que Brasil tiene clara competitividad contra la industria argentina, y sobre esta base, se observó durante el período analizado el sector de productos de línea blanca era el objetivo de las medidas proteccionistas de Argentina. Palabras- clave: comercio, Brasil - Argentina, productos de linea blanca. *** Abstract: This work aims to analyze bilateral trade between Brazil and Argentina, in particular, for white goods. Major agreements between the two countries, with emphasis was contextualized, after the coming of the Customs Union Southern Common Market - MERCOSUR, as the main

UNA virus: first report of human infection in Argentina Virus UNA: primeiro registro de infecção em humanos na República Argentina

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Luis Adrián Diaz

2003-04-01

Full Text Available Una virus (UNAV, Togaviridae family, is widely distributed in South America, where infections have been detected in mosquitoes and vertebrate hosts (humans, birds and horses. We analyzed human sera from Córdoba inhabitants aged 44 to 89 years and using a neutralization test, we found a prevalence of UNAV antibodies of 3.8% (3/79. The low titers detected suggest past infections probably acquired in rural areas of the Province of Córdoba (central Argentina. None sera were found positive for MAYV neutralizing antibodies. This is the first report of human infections by UNAV in Argentina.O virus Una (Togaviridae tem ampla distribuição na América do Sul, detectando-se infecções até hoje em mosquitos e hospedeiros vertebrados (humanos, aves e cavalos. Mediante a realização do teste de neutralização em soros humanos provenientes de indivíduos entre 44 e 89 anos, da cidade de Córdoba, foi detectada uma prevalência de 3,8% (3/79 de anticorpos para o vírus UNA. Nenhum soro apresentou anticorpos para o vírus Mayaro. Os títulos foram baixos demonstrando-se a presença de infecção passada. Dados epidemiológicos indicam que a infecção ocorreu em áreas rurais da província de Córdoba (centro da Argentina. Os dados aqui expostos representam o primeiro registro de infecção de humanos por vírus Una na República Argentina.

Políticas públicas para la fruticultura en Argentina, 1930-1943 Public Policies for the Fruit Growing in Argentina, 1930-1943

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María Silvia Ospital

2013-04-01

Full Text Available El cierre de los mercados internacionales para la producción agraria argentina, consecuencia de la crisis internacional de 1929, obligó al Estado a implantar una serie de medidas alternativas regulatorias de la producción y mercado internistas. Estas prácticas políticas fueron acompañadas por campañas publicitarias que apuntaban a identificar consumo de productos nacionales con una nueva versión del patriotismo. Este artículo se propone realizar algunos aportes sobre esa cuestión, centrándose en las formas en que el Estado nacional -a través del Ministerio de Agricultura- y la dirigencia política y empresarial de la provincia de Mendoza elaboraron la imagen de la Argentina frutícola, productora de uvas de mesa, naranjas y manzanas para el consumo interno, a la vez que la promovían proyectándola como un novedoso renglón de las exportaciones argentinas.The closing of international markets for Argentine agrarian production forced the Government to implement a series of alternative measures such as production and commerce public regulations, bilateral treaties and the rediscovery of possibilities of the domestic market for national products. Those political measures were supplemented by a variety of advertising campaigns aimed at identifying the consumption of domestic products with a new way of patriotism. This paper aims to make contributions to this matter, focusing in the ways in which both the national government -through its agriculture ministry- and the political and corporate leaderships in the province of Mendoza composed the image of Argentina as an important producer of grapes, oranges and apples, while at the same time they stimulated fruit as a new source of the country international commerce.

Bioprospection of marine microorganisms: potential and challenges for Argentina Bioprospección de microorganismos marinos: potencialidades y desafíos para Argentina

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Hebe M Dionisi

2012-06-01

Full Text Available The marine environments of Argentina have a remarkable extension, as well as high biological productivity and biodiversity of both macro- and microorganisms. Despite having a great potential for biotechnological applications, the microorganisms inhabiting these ecosystems remain mostly unexplored and unexploited. In this review, we study the research topics and the interactions among Argentinean laboratories, by analyzing current articles published on biotechnology-related marine microbiology by researchers of this country. In addition, we identify the challenges and opportunities for Argentina to take advantage of the genetic potential of its marine microorganisms. Finally, we suggest possible actions that could improve the development of this research field, as well as the utilization of this knowledge to solve societal needs.El medio ambiente marino de la Argentina tiene una notable extensión, como así también una alta productividad biológica y biodiversidad de macro y microorganismos. A pesar de presentar un gran potencial para aplicaciones biotecnológicas, los microorganismos que habitan estos ecosistemas permanecen mayormente inexplorados y sus propiedades aún no explotadas. En este trabajo de revisión, estudiamos los temas de investigación y las interacciones entre grupos de investigación argentinos, por medio del análisis de los artículos publicados hasta el momento en temáticas relacionadas con la aplicación biotecnológica de microorganismos marinos. Además, identificamos los desafíos y las oportunidades para que la Argentina tome ventaja del potencial genético de sus microorganismos marinos. Por último, sugerimos posibles acciones que podrían mejorar el desarrollo de este campo de estudio, como así también la utilización de este conocimiento para resolver las necesidades de la sociedad.

Tobacco Industry Dominating National Tobacco Policy Making in Argentina, 1966-2005

OpenAIRE

Sebrie, Ernesto M.; Barnoya, Joaquin; Perez-Stable, Eliseo; Glantz, Stanton A.

2005-01-01

EXECUTIVE SUMMARY Argentina accounts for 15% of total tobacco consumption in Latin America and has made the epidemiological transition to an advanced stage in the tobacco epidemic. The Southern Cone region of the Americas leads the hemisphere in tobacco attributable mortality. Argentina is a developing country with economic interests in tobacco growing and rapidly increasing tobacco use in urban areas. In 2000, smoking prevalence was 40.4% among adults- 46.8% of men and 34% of wom...

A widening gap? The political and social organization of childcare in Argentina.

Science.gov (United States)

Faur, Eleonor

2011-01-01

This article examines how social policies and programmes implemented in Argentina shape the political and social organization of childcare. The author seeks to analyse how welfare institutions are currently responding to emerging needs, and to what extent they facilitate the defamilialization of childcare for different social classes. Because Argentina lacks a truly unified ‘care policy’, four different kinds of facilities and programmes are examined: employment-based childcare services; pre-school schemes; social assistance care services; and poverty reduction strategies. It is argued that far from offering equal rights and services with a universalist cast, these ‘caring’ institutions reflect the ethos of the current welfare model in Argentina: a fragmented set of social policies based on different assumptions for different social groups, which in turn filter down to the social organization of childcare.

Estimación de la carga de las enfermedades cardiovasculares atribuible a factores de riesgo modificables en Argentina Estimate of the cardiovascular disease burden attributable to modifiable risk factors in Argentina

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Adolfo Rubinstein

2010-04-01

Full Text Available OBJETIVO: Estimar la carga de la enfermedad, su proporción atribuible a los principales factores de riesgo cardiovascular modificables y los costos médicos directos por hospitalización, asociados con las enfermedades coronarias y los accidentes cerebrovasculares en Argentina. MÉTODOS: Se elaboró un modelo analítico a partir de los datos de mortalidad en Argentina en 2005 y la prevalencia de los principales factores de riesgo cardiovascular (hipertensión arterial, hipercolesterolemia, sobrepeso, obesidad, hiperglucemia, tabaquismo actual y pasado, sedentarismo y consumo inadecuado de frutas y verduras. Se estimaron la carga de la enfermedad -años potenciales de vida perdidos (APVP y años de vida saludable (AVISA perdidos- y los costos de hospitalización por las enfermedades cardiovasculares analizadas. RESULTADOS: En 2005 se perdieron en Argentina más de 600 000 AVISA y se contabilizaron casi 400 000 APVP por enfermedades coronarias y accidentes cerebrovasculares; 71,1% de los AVISA perdidos, 73,9% de APVP y 76,0% de los costos asociados son atribuibles a facto-res de riesgo modificables. La hipertensión arterial fue el factor de riesgo de mayor impacto, tanto en hombres como en mujeres: 37,3% del costo total, 37,5% de los APVP y 36,6% de los AVISA perdidos. CONCLUSIONES: La mayor parte de la carga de la enfermedad en Argentina por enfermedades cardiovasculares está relacionada con factores de riesgo modificables -por lo tanto evitables- y podría reducirse mediante intervenciones poblacionales y clínicas basadas en un enfoque de riesgo, que ya han demostrado ser efectivas en función del costo, asequibles y factibles en países como Argentina.OBJETIVE: Estimate the burden of disease, the proportion attributable to the principal modifiable cardiovascular risk factors, and the direct medical cost of hospitalization associated with coronary heart disease and stroke in Argentina. METHODOLOGY: An analitical model was prepared using

Catálogo de hongos gasteroides (Basidiomycota de Catamarca, Argentina Catalogue of gasteroid fungi (Basidiomycota from Catamarca, Argentina

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María Marta Dios

2011-06-01

Full Text Available Se realiza un listado de los hongos gasteroides de la provincia de Catamarca (Argentina basado en la bibliografía hasta abril de 2010. En total aparecen citadas 43 especies distribuidas en 2 órdenes, 4 familias y 13 géneros. El número de especies catalogadas es relativamente baja pero este número probablemente se incremente cuando se estudien las zonas aún no muestreadas como son las regiones fitogeográfícas de la Puna y las Yungas.A compiled check list of gasteroid fungi of Catamarca Province (Argentina was made. It was based on literature records, available until April 2010. There were 43 species of fungi distributed in 2 orders, 4 families and 13 genera. The number of species recorded in this area was relatively poor but it is likely to increase with the study of unexplored areas not yet surveyed as the phytogeographical regions of the Puna and Yungas.

ADSORBENTES A BASE DE CASCARILLA DE ARROZ EN LA RETENCIÓN DE CROMO DE EFLUENTES DE LA INDUSTRIA DE CURTIEMBRES ADSORVENTES A BASE DE CASCA DE ARROZ NA RETENÇÃO DE CROMO DE EFLUENTES DA INDÚSTRIA DE CURTUMES RICE HUSK-BASED ADSORBENTS IN THE REMOVAL OF CHROMIUM FROM TANNING INDUSTRY EFLUENTS

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YANSY MILENA RODRÍGUEZ

2012-06-01

Full Text Available Diferentes materiales adsorbentes fueron preparados a partir de la cascarilla de arroz (un residuo lignocelulósico agroindustrial, para la remoción de cromo presente en las aguas resultantes de la curtición, debido a su alta toxicidad para la salud humana y a nivel ambiental. La cascarilla de arroz se evaluó como ceniza y carbón activado con acido fosfórico e hidróxido de sodio como agentes activantes. La parte experimental consistió en la calcinación de la cascarilla de arroz, activación química, caracterización, pruebas de adsorción y absorción atómica; obteniendo mejores resultados el adsorbente activado con hidróxido de sodio. Para la activación de la cascarilla de arroz con NaOH se requirió una serie de experimentos para determinar las mejores condiciones de operación en el proceso de obtenci��n del carbón activado. Se obtuvo una mayor remoción en el carbón que se activo a una temperatura de 600°C, un tiempo de activación de 30 minutos y una concentración de la solución de 1% p/p; la remoción de cromo fue del 72,8% comparado con la cascarilla de arroz activada con H3PO4 que fue del 54,5% y la ceniza de cascarilla de arroz 49,2%.Diferentes materiais adsorventes fórum preparados a partir da casca de arroz, um resíduo lignocelulósico agroindustrial, para a remoção de cromo das águas resultantes da curtição, devido a sua alta toxicidade na saúde e ao nível ambiental. A casca de arroz, a qual se avalia como cinza e carvão ativado com acido fosfórico e hidróxido de sódio como agentes ativadores. A parte experimental consta de calcinação da casca de arroz, ativação química, caracterização, testes de adsorção e absorção atômica; obtendo os melhores resultados o adsorvente ativado com hidróxido de sódio. A ativação da casca de arroz com NaOH se precisaram uma série de experimentos para determinar as melhores condições de operação no processo de obtenção do carvão ativado. Obteve

The heavy water production plant at Arroyito, Argentina

International Nuclear Information System (INIS)

Ecabert, R.

1984-01-01

The author describes the construction of an industrial heavy water production plant (Planta Industrial de Agua Pesada, PIAP) in Argentina. The heavy water enrichment is based on a hydrogen/ammonia isotope exchange. (Auth.)

All projects related to Argentina | IDRC - International Development ...

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

Program: Governance and Justice ... Region: Argentina, Brazil, Chile, Costa Rica, Paraguay, Uruguay ... Program: Canada-Israel Health Research Program ... and Twitter are having a direct bearing on social inclusion and opportunity in many ...

Nuevo hospedador de Huequenia livida (Coleoptera: Cerambycidae en Argentina New host record for Huequenia livida (Coleoptera: Cerambycidae in Argentina

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José María Villacide

2006-07-01

Full Text Available La presencia de adultos de Huequenia livida (Germain, 1898 (Cerambycidae fue detectada en una plantación de Pinus contorta Douglas ex Loudon var. murrayana (Balf. Engelm. en la localidad de Lago Puelo (Chubut, Argentina. Este es el primer registro del desarrollo de H. livida en una especie hospedadora distinta de Araucaria spp. Esta contribución agrega una nueva especie y una nueva familia al listado de plantas hospedadoras descriptas para este Cerambycidae en Chile.Adult of Huequenia livida (Germain, 1898 (Cerambycidae were captured in a Pinus contorta Douglas ex Loudon var. murrayana (Balf. Engelm. plantation located in Lago Puelo ( Chubut , Argentina . This is the first mention of the development of H. livida on a host species different than Araucaria spp. This contribution also adds a new host species and family to the list of host plants described for this Cerambycidae in Chile .

All projects related to argentina | IDRC - International Development ...

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

Program: Governance and Justice ... Region: Argentina, Brazil, Chile, Costa Rica, Paraguay, Uruguay ... Program: Food, Environment, and Health ... and Twitter are having a direct bearing on social inclusion and opportunity in many spheres of ...

The Politics of Human Rights in Argentina

OpenAIRE

Brysk, Alison

2013-01-01

Revised edition of 1994 out-of-print Stanford University Press study of human rights protest, social change, and democratization in Argentina.  A symbolic politics analysis of the truth commission, trials, and policy reform in Latin America's most sweeping transition of the 1980's.

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

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Liliana Valverde

2012-06-01

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

The future of the history of psychology in Argentina and Brazil.

Science.gov (United States)

Klappenbach, Hugo; Jacó-Vilela, Ana Maria

2016-08-01

This article analyzes the development of the history of psychology in Argentina and Brazil, beginning with the emergence of the history of psychology at the beginning of the 20th century. The paper analyzes that such old historical reconstructions were written by the same authors or institutions that were introducing Psychology in the two countries. That is, the older historical productions in the field of psychology were Whig biased. An analysis of the last 30 years of history of psychology is also provided. The article describes institutional developments, including archives, journals, scientific meetings, and teaching of history of psychology in academic settings. Main groups devoted to history of psychology, both in Argentina and Brazil are described. Finally, it offers some thoughts on the future of history of psychology in the 2 countries. A comparative study between Argentina and Brazil allows to understand strengths and weakness related to institutionalization of History of Psychology. (PsycINFO Database Record (c) 2016 APA, all rights reserved).

Toxigenic potential of Fusarium graminearum isolated from maize of northwest Argentina

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D.A. Sampietro

2013-01-01

Full Text Available Twenty six isolates of Fusarium graminearum from grains of maize hybrids harvested in ±west Argentina were grown on autoclaved rice grain to assess their ability to produce type B trichothecenes. Chemical analysis indicated that 38% of isolates were nivalenol (NIV producers only, 31% were major NIV producers with high DON(deoxynivalenol/NIV ratios, 8% were major DON producers with minor NIV production, and 23% were DON producers only. Isolates showed a high variability in their toxigenic potential which was not related to fungal biomass. The distribution of the different chemotypes as well as the high and the low trichothecene-producing Fusarium isolates could not be associated to a geographical origin. Our results confirmed for the first time that isolates of Fusarium graminearum from maize of northwest Argentina are able to produce DON and NIV. A substancial contamination with both NIV and DON is likely in maize from northwest Argentina. Their contents should be quantified in regional surveillances for mycotoxin contamination.

Primer registro de Vespula vulgaris (Hymenoptera: Vespidae en la Argentina

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Maité MASCIOCCHI

2010-01-01

Full Text Available Vespula vulgaris (Linnaeus es un véspido social nativo de la región Holártica. En este trabajo reportamos la primera detección de esta especie en Argentina. Obreras de esta avispa fueron capturadas cerca de la ciudad de San Carlos de Bariloche (Argentina en Febrero de 2010, mientras se tomaban muestras de otra avispa invasora, Vespula germanica (Fabricius o chaqueta amarilla, de morfología externa y hábitos similares a la anteriormente mencionada. Además, detallamos algunos caracteres de identificación y características biológicas.

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

Science.gov (United States)

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

2016-01-01

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

Cryptosporidium varanii infection in leopard geckos (Eublepharis macularius in Argentina

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A. Dellarupe

2016-06-01

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

El financiamiento bancario de las PYMES en Argentina (2002 - 2009)

OpenAIRE

Cecilia Allami; Alan Cibils

2011-01-01

Entre 2003 y 2007, la economía argentina experimentó una de las fases de crecimiento más intensas y extensas de las últimas décadas. En este nuevo escenario, las pequeñas y medianas empresas (PYMES) tuvieron un notable desempeño económico y recuperaron el dinamismo que habían perdido en la década anterior. No obstante, la limitación de acceso a los mercados de crédito por parte de las PYMES en Argentina es un fenómeno ampliamente reconocido, que compromete las posibilidades de crecimiento y e...

El financiamiento bancario de las PYMEs en Argentina (2002-2009)

OpenAIRE

Allami, Cecilia; Cibils, Alan

2011-01-01

Entre 2003 y 2007, la economía argentina experimentó una de las fases de crecimiento más intensas y extensas de las últimas décadas. En este nuevo escenario, las pequeñas y medianas empresas (PYMEs) tuvieron un notable desempeño económico y recuperaron el dinamismo que habían perdido en la década anterior. No obstante, la limitación de acceso a los mercados de crédito por parte de las PYMEs en Argentina es un fenómeno ampliamente reconocido, que compromete las posibilidades de crecimiento y e...

RERTR activities in Argentina

International Nuclear Information System (INIS)

Adelfang, P.; Alvarez, L.; Boero, N.; Calabrese, R.; De La Fuente, M.; Echenique, P.; Markiewicz, M.; Pasqualini, E.; Perez, A.; Piazza, A.; Ruggirello, G.; Taboada, H.

2000-01-01

The Atomic Energy Commission of Argentina has been involved in the Reduced Enrichment for Research and Test Reactors Program since 1978. The most relevant milestones of the program, regarding fuel R and D activities, were the development and manufacturing at industrial scale of U 3 O 8 dispersed fuel assemblies and the conversion of the RA-3 reactor core to LEU fuel. More recently, the activities were focused in the development of high density U 3 Si 2 fuel with a density of 4.8 gU/cm 3 and the improvement of the manufacturing process of U 3 Si 2 powder. Currently one of the main objectives is to develop and qualify the technology for the production of high-density LEU fuel elements using U-Mo alloy. Several alternative ways to obtain U-Mo powder are under development with the aim of evaluating plant scale production and costs. To boost this program the main research reactor of Argentina, the RA-3, will be upgraded to 10 MW early in 2001 and the hot cells at the Ezeiza Atomic Center are fully operational after important investments. Significant progresses were also carried out in the development of LEU targets for the production of Mo 99 . Experimental work has demonstrated the feasibility of the manufacturing and radiochemical processing of miniplate targets prepared with dispersed UAl x , maintaining the geometry and the alkaline processing of the HEU targets used so far. (author)

Education in acoustics in Argentina

Science.gov (United States)

Miyara, Federico

2002-11-01

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

Especies del género Tamarix (Tamaricaceae invadiendo ambientes naturales y seminaturales en Argentina Tamarix species (Tamaricaceae invading natural and seminatural habitats in Argentina

Directory of Open Access Journals (Sweden)

E. S. Natale

2008-07-01

Full Text Available El género Tamarix incluye especies con antecedentes como invasores agresivos en ambientes naturales de Estados Unidos, México y Australia. Su presencia en Argentina es conocida desde hace mucho tiempo, cultivado como ornamental, cortina corta-vientos o para sombra o creciendo de manera espontánea. Estudios previos citan un número variable de especies del género como cultivadas en el país, este trabajo aclara confusiones relacionadas con sinonimias, confirmando la presencia de cuatro especies en el país: T. gallica, T. ramosissima, T. chinensis y T. parviflora, las tres primeras registradas colonizando ambientes naturales o seminaturales. Se describen las especies del género citadas para Argentina y se provee una clave para su identificación. Se presenta la distribución conocida hasta el momento del género y se incluyen mapas con la ubicación de poblaciones establecidas e invasoras de cada especie a nivel nacional.The genus Tamarix includes species behaving as aggressive invaders in the USA, México and Australia. Previous studies report a variable number of species of this genus cultivated in Argentina as ornamentals, wind-break or for shadow, or growing spontaneously. This work makes clear some confusion related to synonyms and confirms the presence of four species in our country: T. gallica, T. ramosissima, T. chinensis and T. parviflora, the former three recorded colonizing natural and semi-natural habitats. A description of these species is given, together with a key for their identification, and information of their geographical distribution in Argentina, including maps showing the occurrence of established and invasive populations.

A new species of Miroculis (Ephemeroptera: Leptophlebiidae from NE Argentina Una nueva especie de Miroculis (Ephemeroptera: Leptophlebiidae del NE de Argentina

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Eduardo Domínguez

2007-12-01

Full Text Available The genus Miroculis Edmunds has species described from Brazil, Colombia, Peru, Venezuela and Suriname, with additional records from other countries in northern South America. In this paper, Miroculis (Ommaethus misionensis sp. nov. is described from male and female imagos from Misiones Province, NE Argentina. This constitutes the Southernmost record for the genus.El género Miroculis Edmunds tiene especies registradas en Brasil, Colombia, Perú, Venezuela y Surinam, con registros adicionales de otros países en el norte de América del Sur. En este trabajo se describe la especie Miroculis (Ommaethus misionensis sp. nov. de machos y hembras imago, de la provincia de Misiones, en el Noreste de Argentina, lo que constituye el registro más austral para el género.

Status of the forensically important genus Ophyra (Diptera: Muscidae in Argentina Estado del género de importancia forense Ophyra (Diptera: Muscidae en Argentina

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Luciano D. Patitucci

2010-06-01

Full Text Available The genus Ophyra Robineau-Desvoidy is a necrophagous group of Muscidae distributed in warm climates worldwide. The information here presented is based on the compilation of distributional data obtained from material of different collections and bibliography for Argentina. Ophyra albuquerquei Lopes, Ophyra capensis (Wiedemann, Ophyra chalcogaster (Wiedemann and Ophyra solitaria Albuquerque were recorded for the first time for the country. A key for the Argentinean species is presented. Biological and forensic data of species are discussed.El género Ophyra Robineau-Desvoidy es un grupo de múscidos necrófagos distribuidos en los climas cálidos de todo el mundo. La información aquí presentada se basa en la recopilación de datos de distribución, obtenida a partir del material de diferentes colecciones y bibliografía para la Argentina. Ophyra albuquerquei Lopes, Ophyra capensis (Wiedemann, Ophyra chalcogaster (Wiedemann y Ophyra solitaria Albuquerque se registraron por primera vez para el país. Se presenta una clave para las especies argentinas. Se discuten los datos biológicos y forenses de las distintas especies.

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.

Argentina: Corrupción, dependencia y medios

Directory of Open Access Journals (Sweden)

Alicia Simeoni

2015-01-01

Full Text Available Señala la autora que los medios con factores de poder pero no son parte del poder mismo. Analiza la corrupción en el gobierno de Menem (1989 Argentina, el caso Swiftgate y más hechos de corrupción.

Urban agriculture: Rosario, Argentina reaps the benefits | IDRC ...

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

2010-10-06

Oct 6, 2010 ... Urban agriculture: Rosario, Argentina reaps the benefits ... Urban agriculture has become a permanent part of the city's fabric, ... The Global Roundtable of Chief Economists highlights global trends and best practices to help ...

The industrial nuclear fuel cycle in Argentina

International Nuclear Information System (INIS)

Koll, J.H.; Kittl, J.E.; Parera, C.A.; Coppa, R.C.; Aguirre, E.J.

1977-01-01

The nuclear power program of Argentina for the period 1976-85 is described, as a basis to indicate fuel requirements and the consequent implementation of a national fuel cycle industry. Fuel cycle activities in Argentina were initiated as soon as 1951-2 in the prospection and mining activities through the country. Following this step, yellow-cake production was initiated in plants of limited capacity. National production of uranium concentrate has met requirements up to the present time, and will continue to do so until the Sierra Pintada Industrial Complex starts operation in 1979. Presently, there is a gap in local production of uranium dioxide and fuel elements for the Atucha power station, which are produced abroad using Argentine uranium concentrate. With its background, the argentine program for the installation of nuclear fuel cycle industries is described, and the techno-economical implications considered. Individual projects are reviewed, as well as the present and planned infrastructure needed to support the industrial effort [es

Spent fuel management of NPPs in Argentina

International Nuclear Information System (INIS)

Alvarez, D.E.; Lee Gonzalez, H.M.

2010-01-01

There are two Nuclear Power Plants in operation in Argentina: 'Atucha I' (unique PHWR design) in operation since 1974, and 'Embalse' (typical Candu reactor) which started operation in 1984. Both NPPs are operated by 'Nucleoelectrica Argentina S.A' which is responsible for the management and interim storage of spent fuel till the end of the operative life of the plants. A third NPP, 'Atucha II' is under construction, with a similar design of Atucha I. The legislative framework establishes that after final shutdown of a NPP the spent fuel will be transferred to the 'National Atomic Energy Commission', which is also responsible for the decommissioning of the Plants. In Atucha I, the spent fuel is stored underwater, until another option is implemented meanwhile in Embalse the spent fuel is stored during six years in pools and then it is moved to a dry storage. A decision about the fuel cycle back-end strategy will be taken before year 2030. (authors)

Argentina and Brazil: an evolving nuclear relationship

International Nuclear Information System (INIS)

Redick, J.R.

1990-01-01

Argentina and Brazil have Latin America's most advanced nuclear research and power programs. Both nations reject the Non-Proliferation Treaty (NPT), and have not formally embraced the Tlatelolco Treaty creating a regional nuclear-weapon-free zone. Disturbing ambiguities persist regarding certain indigenous nuclear facilities and growing nuclear submarine and missile capabilities. For these, and other reasons, the two nations are widely considered potential nuclear weapon states. However both nations have been active supporters of the International Atomic Energy Agency (IAEA) and have, in recent years, assumed a generally responsible position in regard to their own nuclear export activities (requiring IAEA safeguards). Most important, however, has been the advent of bilateral nuclear cooperation. This paper considers the evolving nuclear relationship in the context of recent and dramatic political change in Argentina and Brazil. It discusses current political and nuclear developments and the prospects for maintaining and expanding present bilateral cooperation into an effective non-proliferation arrangement. (author)

Public information activities in Argentina

International Nuclear Information System (INIS)

Espejo, Hector

1998-01-01

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

The text of the agreement between the Agency and Argentina relating to the application of safeguards

International Nuclear Information System (INIS)

1995-01-01

The Agreement 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 came into force on 4 March 1994. As a result of the coming into force of the aforesaid Agreement for Argentina, the application of safeguards under the Agreement of 23 October 1973 between Argentina and the IAEA relating to the application of safeguards has been suspended

Tributación del Sector Transporte en Argentina

OpenAIRE

Ernesto Rezk

2004-01-01

El objetivo general es examinar la carga tributaria efectiva sobre los servicios y las inversiones en infraestructura en los sectores de actividad del Transporte de Carga Terrestre (por camión) y Aéreo en la Argentina.

Adding seismic broadband analysis to characterize Andean backarc seismicity in Argentina

Science.gov (United States)

Alvarado, P.; Giuliano, A.; Beck, S.; Zandt, G.

2007-05-01

Characterization of the highly seismically active Andean backarc is crucial for assessment of earthquake hazards in western Argentina. Moderate-to-large crustal earthquakes have caused several deaths, damage and drastic economic consequences in Argentinean history. We have studied the Andean backarc crust between 30°S and 36°S using seismic broadband data available from a previous ("the CHARGE") IRIS-PASSCAL experiment. We collected more than 12 terabytes of continuous seismic data from 22 broadband instruments deployed across Chile and Argentina during 1.5 years. Using free software we modeled full regional broadband waveforms and obtained seismic moment tensor inversions of crustal earthquakes testing for the best focal depth for each event. We also mapped differences in the Andean backarc crustal structure and found a clear correlation with different types of crustal seismicity (i.e. focal depths, focal mechanisms, magnitudes and frequencies of occurrence) and previously mapped terrane boundaries. We now plan to use the same methodology to study other regions in Argentina using near-real time broadband data available from the national seismic (INPRES) network and global seismic networks operating in the region. We will re-design the national seismic network to optimize short-period and broadband seismic station coverage for different network purposes. This work is an international effort that involves researchers and students from universities and national government agencies with the goal of providing more information about earthquake hazards in western Argentina.

Vacuna contra la fiebre hemorrágica argentina Candid#1 producida en la Argentina: Inmunogenicidad y seguridad Candid#1 vaccine against Argentine Hemorrhagic Fever produced in Argentina: Immunogenicity and safety

Directory of Open Access Journals (Sweden)

Delia A. Enria

2010-06-01

Full Text Available Se realizó un estudio clínico en 946 voluntarios humanos sanos, donde se comparó la vacuna Candid#1 producida en Argentina con la elaborada en EE.UU., que había sido utilizada en estudios previos. Como objetivo primario se evaluó la equivalencia en la eficacia utilizando como marcador subrogante a la inmunogenicidad medida por detección de anticuerpos neutralizantes. Como objetivo secundario se evaluó la equivalencia en inocuidad comparando las tasas de reacciones adversas. Ambas vacunas mostraron una tasa equivalente de inmunogenicidad ligeramente superior al 95.5%, que es la eficacia estimada para Candid #1 en estudios previos. No se observaron eventos adversos graves relacionados con la vacuna. Los eventos adversos generales considerados relacionados fueron de escasa significación clínica y de resolución espontánea o con tratamiento sintomático; se presentaron en los receptores de ambas vacunas en tasas equivalentes (29.9% para la vacuna fabricada en la Argentina y 35.0% para la fabricada en EE.UU., e incluyeron: cefalea, decaimiento, mialgias, plaquetopenia leve (A clinical study in 946 human volunteers was done to compare Candid #1 vaccine manufactured in Argentina with the vaccine produced in USA that had been previously used. The efficacy was evaluated using immunogenicity measured by the detection of neutralizing antibodies as a subrogate marker. Safety was evaluated comparing the rate of adverse events. Both vaccines showed a comparable rate of seroconversion, slighty higher than the efficacy estimated from previous studies (95.5%. There were no severe adverse events related to the vaccines. The general events considered related to the vaccines were not clinically relevant and disappeared either spontaneously or with symptomatic treatment. Similar rates of adverse events (29.9% for the Argentine vaccine and 35.0% for the USA vaccine were found for both vaccines. These included: headache, weakness, myalgias, mild low blood