Listar Articulos, Pre-prints (Facultad de Ciencias) por título
Mostrando ítems 223-242 de 488
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Karst et extensions gravitaires d'altitude: Le massif du jaout (Pyrénées occidentales - France)
(SABER ULA, 2005-10-03)Karst et extensions gravitaires d'altitude: Le massif du jaout (Pyrénées Occidentales - France) (Klarica, Stéphianie; Hervouet, Yves et Bauer, Jacques) Résumé La compréhension des circulations d'eau au sein d'un ... -
Kinetics of the natural evolution of hydrogen cyanide in plants in neotropical Pteridium Arachnoideum and its ecological significance.
(SABER ULA, 2005-07-01)Kinetics of the natural evolution of hydrogen cyanide in plants in neotropical Pteridium Arachnoideum and its ecological significance (Alonso Amelot, Miguel and Oliveros, Alberto) Abstract The time-dependent natural ... -
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) ... -
Land-use change and biodiversity conservation in the Venezuelan Páramo: integrating farmer’s perspectives
(Mountain Forum Bulletin 7(1): 15-17, Venezuela, 2007-01) -
Leaf gas exchange in canopy species of a Venezuelan cloud forest
(Biotropica 41(6): 659-664, Venezuela, 2009-11)Tropical cloud forests are considered humid ecosystems with frequent cloud cover down to the ground surface. However, seasonal variation in precipitation may induce short-term water stress. For canopy leaves, this water ... -
Leaf spectra and weight of species in canopy, sub-canopy, and understory layers in a Venezuelan Andean cloud forest
(Scientifica, Article ID 839584, 14 pages http://dx.doi.org/10.6064/2012/839584, Venezuela, 2012-04-22)We characterize the leaf spectra of tree species of an Andean cloud forest in Venezuela, grouped according to position in canopy, subcanopy and understory. We measured leaf reflectance and transmittance spectra in the ... -
Leaf-cutting ants and forest groves in a tropical parkland savanna of Venezuela: facilitated succession?
(SABER ULA, 2005-01-26)Leaf-cutting ants and forest groves in a tropical parkland savanna of Venezuela: facilitated succession? (Farji Brener, Alejandro G. and Silva, Juan F.) Abstract Some savanna arcas in the Orinoco Llanos region in ... -
Liberación de iones metálicos en el medio bucal por fenómenos de corrosión de aleaciones.
(SABER ULA, 2006-04-11)Liberación de iones metálicos en el medio bucal por fenómenos de corrosión de aleaciones. (Velazco de Maldonado, Gladys y Weinhold, Elkis) Resumen Algunas aleaciones presentan problemas de corrosión mediante los cuales ... -
Lie Groups of Conformal Motions acting on Null Orbits
(SABER ULA, 2008-07-02)Lie Groups of Conformal Motions acting on Null Orbits (Carot, Jaume; Coley, A. A.; Sintes, A. M.) Abstract Space-times admitting a 3-dimensional Lie group of conformal motions acting on null orbits containing a ... -
Light-front dynamics of massive vector Chern-Simons gravity
(SABER ULA, 2005-01-06)Light-front dynamics of massive vector Chern-Simons gravity (Khoudeir, Adel; Aragone, Carlos; Arias, Pío José) Abstract We present a second order gravity action which consists of ordinary Einstein action augmented ... -
Locality and electromagnetic momentum in critical tests of special relativity.
(SABER ULA, 2007-04-13)Locality and electromagnetic momentum in critical tests of special relativity. Spavieri, Gianfranco; Quintero, Jesús; Sánchez, Arturo; Ayazo, José y Gillies, George Abstract In this review of recent tests of special ... -
Localizing gravity on exotic thick 3-branes
(SABER ULA, 2007-03-19)Localizing gravity on exotic thick 3-branes Castillo-Felisola, Oscar; Melfo, Alejandra; Pantoja, Nelson; Ramírez, Alba Abstract We consider localization of gravity on thick branes with a ... -
Low temperature resistance in saplings and ramets of Polylepis sericea in the Venezuelan Andes
(Acta Oecologica 35(5): 610–613, Países Bajos, 2009-10)The frequent occurrence of all year-round below zero temperatures in tropical high mountains constitutes a most stressful climatic factor that plants have to confront. Polylepis forests are found well above the continuous ... -
Luminosity profiles and the evolution of shock waves in general-relativistic radiating spheres
(SABER ULA, 2005-12-08)Luminosity profiles and the evolution of shock waves in general-relativistic radiating spheres (Herrera, L.; Núñez, Luis) Abstract A method recently proposed by the authors to study the evolution of discontinuities ... -
Mapa de ecosistemas de Los Andes del norte y Centrales. Bolivia, Colombia, Ecuador, Perú y Venezuela
(Secretaría General de la comunidad Andina, Programa Regional ECOBONA, CONDESAN-Proyecto Páramo Andino, Programa BioAndes, EcoCiencia, NatureServe, LTA-UNALM, IAvH, ICAE-ULA, CDC-UNALM, RUMBOL SRL. Lima. www.infoandina.org/ecosistemasandinos, Perú, 2009)