The combination of soil science, forestry, agronomy and biology allowed an analytical comparison of various experimental mixed culture systems. From these studies, a descriptor system was developed which allows to understand the contribution of each plant species to nutrient cycling,…

The spatial variation in the composition of the tree flora of some Atlantic forest areas distributed in the East Atlantic basins, Southeastern and Southern Brazil, extended to Paraguay and Argentina, was investigated under four main aspects: (1) to evaluate the…

Discussion of the natural sciences had a foundational role in the development of the sociology of race and racism, underpinning the claim that races should, if at all, be studied as social rather than natural phenomena. Whatever its strengths, the…

The guava (Psidium guajava 1.) cv. Paluma has been cultivated in Sao Francisco Valley, Northeastern of Brazil, for in natura consumption and processing purposes. In spite of its importance, there are few scientific knowledge regarding guava physiology, nutrition, irrigation and…

The knowledge about ants of arid zones of Mexico is very poor. For this reason we assessed the biodiversity of this taxon in 2 sites with different vegetation structure. Ten pitfall traps were placed in each site, and 2 surveys…

En este trabajo se plantea una mirada valorativa sobre las dos primeras
constituciones venezolanas y una lectura americanista del Discurso de Angostura
y del proyecto constitucional bolivariano; mirada y lectura orientadas por el
pensamiento del filósofo argentino Arturo Andrés Roig.…

The Mediterranean Amphipoda fauna has been widely studied and can be considered one of the best known in the world (Conradi & López-González 1999); however knowledge of the fauna is not uniform throughout the entire Mediterranean, being still fragmentary on…

El artículo trata de las principales ideas económicas de finales del siglo XVIII y de su adaptación a la realidad española durante los reinados de Carlos III y Carlos IV. Partiendo de Adam Smith para el análisis de la teoría…

Considering the importance of the debate on the topic of disasters related to landslides, flooding and technological risks, under international and more recently in Brazil, this work analyzes the situations of vulnerability risk areas on the Northern Coast of São…

Ce mémoire portera sur le problème de la signification, dans la pensée de Heidegger, de la métaphysique moderne, à partir de la conception de l’histoire de l’être qu’il développe dans les années 1930. Plus précisément, nous nous baserons sur l’écrit…