Articulos, Pre-prints (Facultad de Ciencias): Envíos recientes
Voici les éléments 241-260 de 488
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Acute chagas’ disease in western Venezuela: A clinical, seroparasitologic, and epidemiologic study
(The American Society of Tropical Medicine and Hygiene, 1999-02)A clinical, parasitologic, and serologic study carried out between 1988 and 1996 on 59 acute-phase patients in areas of western Venezuela where Chagas’ disease is endemic showed 19 symptomatic patterns or groups of symptoms ... -
Infected dogs as a risk factor in the transmission of human Trypanosoma cruzi infection in western Venezuela
(Acta Tropica 98 (2006), 2006-07)A total of 565 mongrel dogs from rural localities of Venezuela were examined by serological (DAT, IFAT and ELISA) and parasitological tests to address the status of Trypanosoma cruzi infection and to evaluate their role ... -
GridChoque: a grid environment to experiment on spherically symmetric general relativistic radiation hydrodynamics
(2009-10-20)This paper presents a Grid application, GridChoque: a distributed, and a grid based, environment devised to explore the general relativistic spherically radiative stellar collapse using several tools of calculus and ... -
LAGOvirtual a collaborative environment for the large aperture GRB observatory
(2009-10-20)We present the LAGOVirtual Project: an ongoing project to develop platform to collaborate in the Large Aperture GRB Observatory (LAGO). This continental-wide observatory is devised to detect high energy (around 100 GeV) ... -
El índice de concienciación ambiental
(Venezuela, 2009-09-15)Existen severas limitaciones en torno a los mecanismos interinstitucionales que aseguren la transferencia eficiente de información, conocimientos y responsabilidades inherentes a la ecología y por ende la conservación de ... -
Cytochromes c of Acidithiobacillus ferrooxidans
(FEMS Microbiol Lett. 2002 Apr 9;209(2):189-95, 2002-04)The chemolithoautotrophic Gram-negative bacterium Acidithiobacillus ferrooxidans is versatile and can grow on a number of electron donors and acceptors. In the A. ferrooxidans ATCC 23270 genome, computer analysis identified ... -
Regulation of the expression of the acidithiobacillus ferrooxidans rus operon encoding two cytochromes c, a cytochrome oxidase and rusticyanin
(Microbiology 150 (2004), 2113-2123, 2004)The regulation of the expression of the rus operon, proposed to encode an electron transfer chain from the outer to the inner membrane in the obligate acidophilic chemolithoautroph Acidithiobacillus ferrooxidans, has been ... -
Mercury resistance in bacterial strains isolated from tailing ponds in a gold mining area near El Callao (Bolívar State, Venezuela)
(Current Microbiology 2007 Feb;54(2):149-54, 2007-02-01)Bacterial resistance to mercury (Hg) was investigated in strains isolated from Hg-contaminated tailing ponds located in the gold mining area of El Callao (Bolívar State, Venezuela). High frequencies of resistance were ... -
Characterization of the mineral phosphate-solubilizing activity of pantoea aglomerans MMB051 isolated from an Iron-Rich soil in southeastern Venezuela (Bolívar State)
(Current Microbiology 2009 Apr;58(4):378-83, 2008-12-09)The mineral phosphate-solubilizing (MPS) activity of a Pantoea agglomerans strain, namely MMB051, isolated from an iron-rich, acidic soil near Ciudad Piar (Bolý´var State, Venezuela), was characterized on a chemically ... -
Isolation and characterization of mineral phosphate-solubilizing bacteria naturally colonizing a limonitic crust in the south-eastern Venezuelan region
(Soil Biology & Biochemistry 39 (2007) 2905–2914, 2007-11)With the aim to explore the possible role of mineral phosphate-solubilizing bacteria (PSB) in phosphorus (P) cycling in iron-rich, acidic soils, we conducted a survey of PSB naturally colonizing a limonitic crust in the ... -
Diversidad, estabilidad y dinámica del paisaje en comunidades de sabana
(2009-07-15)En los bordes de la Mesa de Guanipa (Venezuela) muestreamos comunidades arbóreas en distintas formas de relieve con el objetivo de estudiar las relaciones entre riqueza de especies (S) y diversidad (H’) con la estabilidad ... -
Ecología comparada de Hypericum Laricifolium Juss. y de H. Juniperinum Kunth en el valle fluvioglacial del páramo de Mucubají. Mérida, Venezuela
(2009-07-15)Hypericum laricifolium e Hypericum juniperinum son dos arbustos esclerófilos muy abundantes en hábitats parameros. Ambas especies suelen observarse coexistiendo, pero H.juniperinum parece ocupar microhábitats más húmedos ... -
Efecto borde y respuestas funcionales en el establecimiento de Alchornea triplinervia y Myrcia acuminata en un fragmento de selva nublada Andina
(2009-03-03)La intervención de la selva nublada andina por actividades agropecuarias ha generado su fragmentación, originando remanentes de bosque (fragmentos) inmersos en una matriz de pastizal. A través de la zona de contacto entre ... -
Virtual atomic and molecular data centre
(Venezuela, 2009-02-09)A large-scale computational project has been recently launched to develop the Virtual Atomic and Molecular Data Centre (VAMDC). It involves several research groups from the European Union (Austria, France, Germany, Italy, ... -
Asssessing flooding patterns in Llanos of the Apure region (Venezuela) using radar images
(2009-01-22)En las sabanas inundables de los Llanos de la cuenca del Orinoco el agua es el factor principal que determina el ecosistema y su cambio. Durante la inundación, la duración y nivel del agua dependen en gran medida de la ... -
Técnicas de diseño, desarrollo y montaje de circuitos impresos
(Venezuela, 2008-11-10)El artículo nombra y brinda las funciones principales de las Herramientas Computacionales (CAD), utilizado por los autores, para el diseño de circuitos impresos, desarrollo del esquemático, simulación y fabricación del ... -
¿Nieves eternas en la Sierra Nevada de Mérida?
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Memorias del Congreso Latinoamericano de Computación de Alto Rendimiento (CLCAR) - Performance evaluation of meta-data transfer and storage in clusters
(SABER ULA, 2008-09-03)Performance evaluation of meta-data transfer and storage in clusters. (Hermann, Everton; Kassick, Rodrigo V.; Ávila, Rafael B.; Barrios Hernández, Carlos Jaime; Riveill, Michel; Denneulin, Yves y Navaux, Philippe O. A.) ... -
E-science perspectives in Venezuela.
(SABER ULA, 2008-08-29)E-science perspectives in Venezuela. (Díaz, Gilberto; Flórez López, Julio; Hamar, Vanessa; Hoeger, Herbert; Mendoza, Claudio; Mendez, Z.; Núñez, Luis; Ruiz, Nicolás; Torréns Heeren, Rodrigo J.; Uzcátegui, M.) Abstract We ...