Listar Articulos, Pre-prints (Facultad de Ciencias) por título

Mostrando ítems 440-459 de 488

    • The 3-dimensional einstein-klein-gordon system in characteristic numerical relativity. 

      Barreto Acevedo, Willians; Da Silva, A.; Gómez, R.; Lehner, R.; Rosales, L.; Winicour, J. (SABER ULA, 2005-09-18)
      The 3-dimensional einstein-klein-gordon system in characteristic numerical relativity. (Barreto Acevedo, Willians; Da Silva, A.; Gómez, R.; Lehner, R.; Rosales, L.; Winicour, J..) Abstract We incorporate a massless ...

    • The abelian topological mass mechanism from dimensional reduction 

      Khoudeir, Adel (SABER ULA, 2005-01-06)
      The abelian topological mass mechanism from dimensional reduction (Khoudeir, Adel) Abstract We show that the abelian topological mass mechanism in four dimensions, described by the Cremmer-Sherk action, can be ...

    • The evolution of discontinuities in radiating spheres in the diffusion approximation 

      Barreto Acevedo, Willians; Núñez, Luis; Herrera, L. (SABER ULA, 2005-12-08)
      The evolution of discontinuities in radiating spheres in the diffusion approximation (Barreto Acevedo, Willians; Herrera, L.; Núñez, Luis) Abstract The evolution of discontinuities in a general relativistic sphere ...

    • The gravitational and electrostatic fields far from an isolated Einstein-maxwell source. 

      Ocaríz E., José H.; Rago, Héctor (SABER ULA, 2006-08-03)

    • The large aperture gamma ray observatory as an observational alternative at high altitude 

      Núñez, Luis; Aglietta, M.; Allard, D.; Allekotte, I.; Alvarez, C.; Araujo, C.; Arturo, E.; Asorey, H.; Barrera, M.; Barros, H.; Bertou, X.; Camacho, E.; Carramiñana, A.; Carrasco, E.; Castillo, M.; Chirinos, J. M.; Conde, R.; Contreras, C.; Dasso, S.; De Castro, A.; Gómez Berisso, M.; García, I.; González, J.; Grajales, J.; Guada B., Carlos E.; Guevara Day, W. R.; López, J. A.; Laffaille, J.; Martínez, O.; Martin, R.; Melfo, A.; Mendoza, E.; Meza, E.; Miranda Loza, P.; Moreno Barbosa, E.; Murrugarra, C.; Otiniano Ormachea, L. J.; Perez, G.; Perez, Y.; Ponce, E.; Prada, J.; Quispe, J.; Rivera, H.; Rosales R., Misael D.; Rovero, A. C.; Saavedra, O.; Salazar, H.; Sanabria Gómez, J. D.; Santos Rodríguez, E.; Tello, J. C.; Ticona Peralda, R.; Torres, I.; Varela, E.; Velarde, A.; Vernetto, S.; Villasenor, L.; Villegas, J. C.; Wahl, D.; Zamalloa, M. A. (2011-02-04)
      A pesar de que las observaciones por satélite han permitido desvelar algunos misterios sobre el origen y localización de rayos cósmicos a bajas energías, hay preguntas aún no resueltas en los rangos mas altos de energías ...

    • The large aperture GRB observatory 

      Allard, D.; Alvarez, C.; Asorey, H.; Barros, Humberto J. V.; Bertou, Xavier; Castillo, M.; Chirinos, J. M.; De Castro, A.; Flores, S.; González, J.; Gomez Berisso, M.; Grajales, J.; Guada B., Carlos E.; W.R. Guevara, Day; Ishitsuka, J.; López, J. A.; Martínez, O.; Melfo, A.; Meza, E.; Miranda Loza, P.; Moreno Barbosa, E.; Murrugarra, C.; Núñez, Luis; Otiniano Ormachea, L.J.; Pérez, G.; Pérez, Y.; Ponce, E.; Quispe, J.; Quintero, Carlos; Rivera, H.; Rosales R., Misael D.; Rovero, A.C.; Saavedra, O.; Salazare, H.; Tello, J. C.; Ticona Peraldam, R.; Varela, E.; Velarde, A.; Villasenor, L.; Wahl, D.; Zamalloa, M.A. (http://arxiv.org/, Polonia, 2009-06-04)
      The Large Aperture GRB Observatory (LAGO) is aiming at the detection of the high energy (around 100GeV) component of Gamma Ray Bursts, using the single particle technique in arrays of Water Cherenkov Detectors (WCD) in ...

    • The science gateway LAGO virtual 

      Barrios Hernández, Carlos Jaime; Núñez, Luis; Quiñonez, Fernando A.; Torres, Luis A. (Venezuela, 2012-06)

    • The use of organic substrates with contrasting C/N ratio in the regulation of nitrogen use efficiency and lossesin a potato agroecosystem 

      Machado Díaz, Daniel; Sarmiento, Lina; Gonzalez-Prieto, S (Nutrient Cycl Agroecosystems 88(3): 411–427, Venezuela, 2010-12-01)
      The effect of the application of organic amendments of contrasting C/N ratio, combined with mineral N fertilizer, on the N budget of a potato crop was evaluated. The hypothesis was that the combination of substrates of ...

    • Theorical studies of energy photoemission spectra (XPS) of S and SO2 adsorbed on Ni clusters by Hartree-Fock method. 

      Martínez, E.; Rodríguez, Alfonso; Rincón Hernández, Luis (SABER ULA, 2005-08-18)
      Theorical studies of energy photoemission spectra (XPS) of S and SO2 adsorbed on Ni clusters by Hartree-Fock method. (Martínez, E.; Rodríguez, Alfonso; Rincón Hernández, Luis.) Abstract Theoretical results of photoemission ...

    • Thick domain wall spacetimes with and without reflection symmetry 

      Pantoja, Nelson; Melfo, Alejandra; Skirzewski, Aureliano (SABER ULA, 2005-05-25)
      Thick domain wall spacetimes with and without reflection symmetry Melfo, Alejandra; Pantoja, Nelson; Skirzewski, Aureliano Abstract We show that the spacetimes of domain wall solutions to ...

    • TIC e Impacto social: el caso de Mérida 

      Núñez, Luis; Silva, José Gregorio (SABER ULA, 2006-01-26)
      TIC e Impacto social: el caso de Mérida (Núñez, Luis; Silva, José Gregorio) Resumen Presentamos aquí, como un caso de estudio, la ciudad de Mérida. De alguna manera en esta pequeña ciudad de Venezuela se ha generado ...

    • El tiempo, ese escultor 

      Rago, Héctor (SABER ULA, 2003-07-14)

    • Tierras llaneras de Venezuela...tierras de buena esperanza 

      López, Roberto A.; Hétier, Jean Marie; López Hernández, Danilo; Schargel, Richard; Zinck, Alfred (Venezuela, 2015)

    • Transformación del paisaje de selvas de montaña en la cuenca del río Capaz, Andes Venezolanos 

      Rodríguez Morales, Mayanín; Chacón Moreno, Eulogio; Ataroff Soler, Michele (Venezuela, 2009-12-31)
      La deforestación de selvas tropicales de montaña es una de las principales causas de la pérdida de la biodiversidad de nuestro planeta. Entre 1981 y 1990 Venezuela presentó las mayores tasas de deforestación de ...

    • Trypanosoma cruzi congenital transmission in wild bats 

      Añez Reverol, Nestor Oswaldo; Crisante R., Gladys E.; Soriano, Pascual J. (Acta Tropica 109 (2009), 2009)
      Trypanosoma cruzi congenital transmission in wild bats (Molossus molossus), associated with infected Rhodnius prolixus in a natural habitat from a rural locality in western Venezuela, is reported. T. cruzi blood circulating ...

    • Trypanosoma cruzi persistence at oral inflammatory foci in chronic chagasic patients 

      Añez Reverol, Nestor Oswaldo; Crisante R., Gladys E.; Caraballo, Fabian; Delgado, Wilder; Parada F., Henry (2011-12-13)
      The persistence of Trypanosoma cruzi in seropositive individuals, previously diagnosed as chronic chagasic patients (CCP), was detected for the first time in biopsies taken from gingival inflammatory foci processed by ...

    • Trypanosoma cruzi primary infection prevents severe re-infection in mice 

      Añez Reverol, Nestor Oswaldo; Martens, María Luisa; Romero, Maximiliano; Crisante R., Gladys E. (2011-12-13)
      Se evalúa el efecto de reinoculaciones por Trypanosoma cruzi en ratones experimentalmente infectados. De un total de 200 ratones que fueron infectados por vía intradérmica con un inóculo de 5x103 tripomastigotes metacíclicos ...

    • Trypanosoma rangeli expresses a gene of the group II trans-sialidase superfamily 

      Añez Reverol, Nestor Oswaldo; Peralta, Andreina; Crisante R., Gladys E.; Rojas E., Agustina del V.; Añez Rojas, Néstor; Ramirez, José Luis; Chiurillo, Miguel Angel (Molecular & Biochemical Parasitology 142 (2005), 2005)

    • El Tsunami de Arica del año 1868. 

      Laffaille, Jaime R. (SABER ULA, 2007-06-04)

    • Two gravitationally Chern-Simons terms are too many 

      Khoudeir, Adel; Aragone, Carlos; Arias, Pío José (SABER ULA, 2005-01-06)
      Two gravitationally Chern-Simons terms are too many (Khoudeir, Adel; Aragone, Carlos; Arias, Pío José) Abstract It is shown that topological massive gravity augmented by the triadic gravitational Chern-Simons first ...