The aim of this paper is to determine the chronology of the information on papilionid and pierid butterflies of Mexico, as well as the patterns of collection and who were the most active collectors freom a curatorial databases and bibliography.…

El delfín estuarino Sotalia guianensis se encuentra distribuido a lo largo de la costa Atlántica. En Venezuela, es localizado principalmente en

el Sistema del Lago de Maracaibo. Con el propósito de aportar información sobre los patrones de comportamiento…

La política exterior de Chávez orienta su agenda de Estado y gobierno a la construcción de un mundo
multipolar con el fin de diversificar el intercambio comercial y su política económica mediante la ampliación del
mercado y la…

El desarrollo de la ciencia en Venezuela no se explica sin la existencia de la Asociación Venezolana para el Avance de la Ciencia (AsoVAC). La ocasión de su sesenta aniversario es propicia para hacer una reflexión sobre el nuevo escenario…

If we are to understand human-level intelligence, we need to understand how meanings can be learned without explicit instruction. I take a step toward that understanding by focusing on the symbol-grounding problem, showing how symbols can emerge from a system…

This study analyse the influence of Knowledge of Results (KR) with different accuracy levels on the learning rate of a throwing skill of spatial non-vision accuracy, during the acquisition stage. We assessed the number of successful events, the distance from…

RESUMO: Apesar do grande volume de informações no Brasil sobre atributos dos solos e distribuição na paisagem, surgem vários problemas quando se procura usá-los para planejamento de uso da terra, em particular pequenas áreas como comunidades rurais. No bioma Cerrado,…

Gene expression arrays are a technology used to measure quantities of messenger ribonucleic acid (mRNA). Application of the technology involves a variety of physical processes beginning with the acquisition of mRNA samples and ending with the fluorescence imaging of a…

The dissertation examines aesthetic, scientific and occult evocations of fluids such as air at the turn of the 20th century. Eighteenth century experimental philosophy postulated so-called "imponderable fluids" understood as instances of a subtle matter that fills empty space. The…

Despite recent progress in materials synthesis, there are few materials with narrow pore size distributions and well-defined pore structures in the size range of 100 - 500 A. Materials with pores of 100 - 500 A possess a potential combination…