Listar Articulos, Pre-prints (Facultad de Ciencias) por título
Mostrando ítems 344-363 de 488
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Phenolics and condensed tannins of high altitude Pteridium arachnoideum in relation to sunlight exposure, elevation, and rain regime.
(SABER ULA, 2007-04-09)Phenolics and condensed tannins of high altitude Pteridium arachnoideum in relation to sunlight exposure, elevation, and rain regime. (Alonso Amelot, Miguel; Oliveros Bastidas, Alberto y Calcagno P., María Pía) Abstra ... -
Phenyl substituted cycloprpanes. I. Trans - 2 - (p- Tolyl) cyclopropanoic acid
(SABER ULA, 2008-07-12)Phenyl substituted cycloprpanes. I. Trans - 2 - (p- Tolyl) cyclopropanoic acid. (Belkis M., Ramírez V.; Rivera, Valentina; Rodulfo de Gil, Eldrys; Alonso Amelot, Miguel y Peckerar, Sarail) Resumen C11H12O2’ Mr = ... -
Phenyl-substituted cycloprpanes. II. Ethyl trans -2-phenylcycloprpane-1- carboxylate
(SABER ULA, 2008-07-12)Phenyl-substituted cycloprpanes. II. Ethyl trans –2–Phenylcycloprpane-1- carboxylate. (Mora, Asiloé J.; Rivera, Valentina; Rodulfo de Gil, Eldrys y Alonso Amelot, Miguel) Resumen C12H14O2, Mr = 190.24, orthorhombic, ... -
Photosynthetic acclimation to light in juveniles of two cloud forest tree species
(TREES 10: 114-124, 1995) -
Phylogeny, taxonomy and grouping of Trypanosoma rangeli isolates from man, triatomines and sylvatic mammals from widespread geographical origin based on SSU and ITS ribosomal sequences
(Parasitology (2004), 129, 2004)Phylogenetic relationships among Trypanosoma rangeli isolates from man, wild mammals and triatomine bugs from widespread geographical origin were inferred by comparison of the small subunit of ribosomal gene sequences. ... -
Physical geography and ecosystems in the tropical Andes
(Herzog, S., Martínez, R., Jørgensen, P. and Tiessen, H. (Eds): Climate Change and biodiversity in the tropical Andes.Capitulo 10. Macarthur Foundation, inter american iInstitute, Scope. Colombia. pp. 152-169, Colombia, 2011) -
Population responses to fire in a tropical savanna grass, Andropogon Semiberbis: a matrix model approach
(SABER ULA, 2005-01-25)Artículo publicado en: Journal of Ecology (1991), 79, 345-356. -
Portal of damage on Grid
(SABER ULA, 2008-06-23)Portal of damage on Grid (Flórez López, Julio; Hamar, Vanessa; Hoeger, Herbert; Hernández, A.; León Q., Leandro; Núñez, Luis; Ruiz, Nicolás y Uzcátegui, Maylett) Abstract The kind of problems currently addressed by ... -
Portal of damage: A web-based finite element program for the analysis of framed structures subjected to overloads
(SABER ULA, 2007-04-27)Portal of damage: A web-based finite element program for the analysis of framed structures subjected to overloads (Marante, María E.; Suárez, Lorena; Quero, Adriana; Redondo, Jorge; Vera, Betsy; Uzcategui, Maylett; Delgado, ... -
PP waves and distributional curvature
(SABER ULA, 2007-03-19)PP waves and distributional curvature. (Nelson Pantoja and Freddy Ramírez) Abstract We carry out the distributional analysis of the geometry of a spacetime associated to gravitational waves propagating in a magnetic ... -
Precipitación e intercepción en ecosistemas boscosos de Los Andes de Venezuela.
(SABER ULA, 2002-12-31) -
Predominance of lineage I among Trypanosoma cruzi isolates from Venezuelan patients with different clinical profiles of acute Chagas’ disease
(Tropical Medicine and International Health. volume 9 no 12, december 2004, 2004-12)Trypanosoma cruzi isolates from 23 acute chagasic patients from localities of Western Venezuela (state of Barinas) where Chagas’ disease is endemic were typed using ribosomal and mini-exon gene markers. Results showed that ... -
Preparation and electrical characterization of the compound CuAgGeSe3
(2011-10-11)This work reports the synthesis and electrical characterization of the compound CuAgGeSe3. This material was synthesized by direct melting of the constituent elements, in their stoiochiometric ratio inside an evacuated ... -
Propagation of a shock wave in a radiating spherically symmetric distribution of matter
(SABER ULA, 2005-12-08)Propagation of a shock wave in a radiating spherically symmetric distribution of matter (Herrera, L.; Núñez, Luis) Abstract A method used to study the evolution of radiating spheres reported by L. Herrera, J. Jimenez, ... -
Propiedades eléctricas y ópticas del compuesto ternario Cu2GeTe3
(SABER ULA, 2008-05-19)Propiedades eléctricas y ópticas del compuesto ternario Cu2GeTe3 Fernández, Braulio J. y Villarreal, Manuel Resumen En este trabajo presentamos el estudio de la resistividad eléctrica, el coeficiente de Hall y la ... -
Propiedades magnéticas del sistema de aleaciones Cu2Cd1-ZMnZSnSe4
(SaberULA, 2019-05-29)En este trabajo se reportan las medidas de susceptibilidad magnética X en función de la temperatura en el rango de 2-300 K de muestras policristalinas del sistema de aleaciones semiconductor magnético Cu2Cd1-zMnzSnSe4. ... -
Propuesta interactiva para el aprendizaje de fenómenos eléctricos y magnéticos a nivel del ciclo diversificado y profesional.
(SABER ULA, 2008-05-23)Propuesta interactiva para el aprendizaje de fenómenos eléctricos y magnéticos a nivel del ciclo diversificado y profesional. Briceño, Jesús; Rosario, Jesús; Lobo, Hebert; Gutiérrez, Gladys; Villarreal, Manuel; Díaz, Juan ... -
Propuesta metodológica para el control de calidad de datos de precipitación.
(Venezuela, 2008)Este trabajo tiene como objetivo presentar una propuesta metodológica para analizar datos climáticos históricos a ser utilizados en estudios de la variabilidad temporal de la precipitación en una región. Específicamente, ... -
Prólogo al libro de Newton
(SABER ULA, 2003-07-16)