全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:W. Barreto , L. A. Núñez
来源:[J].Astrophysics and Space Science(IF 2.064), 1991, Vol.178 (2), pp.261-275Springer
摘要:Abstract(#br)A semi-numerical method by Herrera et al. (1980) is extended to handle the evolution of general relativistic spheres where diffusion and free streaming radiation processes coexist. It is shown when mixed-mode radiation is present a very different hydrodynamic picture...
作者:L. Herrera , L. A. Núñez
来源:[J].Astrophysics and Space Science(IF 2.064), 1992, Vol.188 (1), pp.9-18Springer
摘要:Abstract(#br)The precise mechanism whereby gravitational collapse leads to a type II supernova event is one of the most controversial points in the understanding of the final stages of stellar evolution. The ‘bounceshock’ mechanism and the proposed ‘long-term neutrino m...
作者:F. Aguirre , H. Hernández , L. A. Núñez
来源:[J].Astrophysics and Space Science(IF 2.064), 1994, Vol.219 (2), pp.153-170Springer
摘要:Abstract(#br)We comment on a method proposed to study the evolution of General Relativistic Radiating Spheres in both radiation limits, i.e. free streaming out and diffusion, extending it to handle any general radiating spherically symmetric distribution of matter. It is also sho...
作者:R. Aquilano , W. Barreto , L. A. Núñez
来源:[J].Astrophysics and Space Science(IF 2.064), 1995, Vol.225 (2), pp.167-181Springer
摘要:Abstract(#br)A semi-numeric method by Herrera, Jiménez and Ruggeri is used to study the evolution of general relativistic spheres in the free streaming radiation approximation when specific contraction schemes are imposed and for particular oscillatory radiation profiles. On...
作者:L. A. Núñez , R Bernal , J. T. Knudsen
来源:[J].Plant Systematics and Evolution(IF 1.312), 2005, Vol.254 (3-4), pp.149-171Springer
摘要:Abstract(#br)We studied pollination ecology of the sympatric palms Attalea allenii and Wettinia quinaria in a tropical rain forest in Colombia. Attalea has a subterranean stem and Wettinia is tall and arboreal. Both species have thermogenesis and short anthesis, and their fl...
作者:J. Carot , L. A. Núñez , U. Percoco
来源:[J].General Relativity and Gravitation(IF 1.902), 1997, Vol.29 (10), pp.1223-1237Springer
摘要:Abstract(#br)We present the general structure of proper Ricci Collineations (RC) for type B warped space-times. Within this framework, we give a detailed description of the most general proper RC for spherically symmetric metrics. As examples, static spherically symmetric and Fri...
作者:A. Melfo , L. A. Núñez
来源:[J].General Relativity and Gravitation(IF 1.902), 1992, Vol.24 (11), pp.1125-1129Springer
摘要:Abstract(#br)A package of programs for writing and checking the solutions to the equations for various types of collineations, written in the symbolic manipulation language REDUCE is presented. Some examples of previously found collineations that have been checked are given, and ...
作者:L. A. Núñez , M. Gurpegui
来源:[J].Acta Psychiatrica Scandinavica(IF 4.857), 2002, Vol.105 (3), pp.173-178Wiley
摘要:Objective: The existence of cannabis‐induced psychosis (CP) remains controversial, partly because of methodological problems. We hypothesize that acute schizophrenia (AS) and CP can have distinct demographic, premorbid and clinical features.(#br)Method: We compared 26 patien...
作者:D. Sierra Porta , L. A. Núñez
来源:[J].International Journal of Applied Mathematical Research, 2017, Vol.6 (1), pp.34-38SPC
摘要:The Painlevé equations and their solutions arises in pure, applied mathematics and theoretical physics. In this manuscript we apply the Optimal Homotopy Asymptotic Method (OHAM) for solving the first Painlevé equation. Our approximation technique is based on the use of polyn...
作者:L. A. Núñez , R. Bernal , J. T. Knudsen
来源:[J].Plant Systematics and Evolution(IF 1.312), 2005, Vol.254 (3/4), pp.149-171JSTOR
摘要:We studied pollination ecology of the sympatric palms Attalea allenii and Wettinia quinaria in a tropical rain forest in Colombia. Attalea has a subterranean stem and Wettinia is tall and arboreal. Both species have thermogenesis and short anthesis, and their floral scents d...

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