Diferenças pontuais entre pares de bases de diferentes sequências alinhadas são o tipo mais comum de variabilidade genética. Tais diferenças, conhecidas como polimorfismos de base única (single nucleotide polymorphisms ? SNPs), são importantes no estudo davariabilidade das espécies, pois podem…

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IFLA Council and General Conference Proceedings (66th, Jerusalem, Israel, August 13-18, 2000)

This paper aims to clarify an economic mechanism behind the growing dichotomy between geo-economics and the borderless global knowledge economy. The proposed hypothesis is that geo-economic fault-lines, which are the product of the past prejudices of racial, linguistic, and cultural…

En este trabajo procuramos reflexionar sobre las posibilidades
que le brinda el ciberespacio a la Universidad para que difunda, a través de
las bibliotecas digitales, el producto científico que germina dentro de sus
paredes. Para ello, tomamos en consideración algunos…

Cuando se analizan los diseños curriculares que desarrollan las instituciones de formación docente se evidencia que en su mayoría están centrados en la asignaturización de contenidos y en enfoques lógico-instrumentales con énfasis en la simplificación y fragmentación del conocimiento. Así,…

Knowledge of the distribution of soil organic matter (SOM) fractions is important in managing soils toward a sustainable agricultural system ina tropical environment, However, data on Histosols in limited. This study developed 19 regions of Brazil. Soil organic matter was…

2007

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BACKGROUND:Phylogenetic analyses based on datasets rich in both genes and species (phylogenomics) are becoming a standard approach to resolve evolutionary questions. However, several difficulties are associated with the assembly of large datasets, such as multiple copies of a gene per…