The anthropogenic dark earths (ADE, Terra Preta de Índio or terra preta arqueológica, as are often referred to in Portuguese) feature unique properties that are interesting not only from a pedological point of view but have important agronomic and economic…

Despite the many assumptions that usually surround the importance of science education for scientific practice, scholarship on the history of subject has been scattered and usually undertaken en route to other pursuits. In this research, I aim to bring to…

En el artículo se publican algunas noticias inéditas sobre José Bermúdez de
Castro, como la fecha de su nacimiento y de su muerte, y se hace un estudio general
de sus colaboraciones en La Revista Española, la mayoría de crítica…

Muchos son los factores que determinan la dinámica de poblaciones de plantas entre los cuales hay demográficos (variabilidad ambiental,
densidad poblacional, etc.) y genéticos (variabilidad genética de los individuos, deriva genética y/o depresión por consanguinidad). Entender
los efectos de esos…

Dust is an ubiquitous inhabitant of the interstellar medium, and leaves an unmistakable signature in its optical properties, and physico-chemical evolution. Although there is little direct knowledge of the true nature of interstellar dust grains, strong evidences point toward the…

2008

Nowadays universities are required not only to impart
knowledge of specific disciplines but also generic graduate
attributes such as communication, problem-solving,
teamwork, creative thinking, research and inquiry skills. For
students to attain these generic skills, educators are
encouraged to use…

The São Francisco River basin in Brazil is marked by socio-economic disparities and environrnental vulnerabilities. Water managers in the semi-arid region of the basin are faced with several challenges, such as competition among different water user groups, local over-exploitation of…

http://dx.doi.org/10.5007/1677-2954.2008v7n2p323This paper advances the main tenets of a new meta-ethical approach to moral problems. I holds that there is moral knowledge and that it is best understood in terms of knowing-how. Moreover, ir presents an analysis of knowing-how and shows…

La cuenca del Congo es la selva tropical más grande después del Amazonas. Este bosque cuenta con más de 28 especies de árboles dominantes (muy grande), de un valor comercial importante, como Wenge y Bosee Clair-. En una parte del…