In plant breeding programs, the knowledge about the appropriate sample size for the evaluation of populations is very important. A small sample reduces the chance of selecting superior genotypes, whereas a very large sample may lead to unnecessary increases in…

En la historia de todas las sociedades, el conocimiento ha sido monopolizado por una élite, que lo utiliza para conservar el poder, se crearon limitantes para excluir a la masa de los saberes relevantes que otorgan la supremacía a unos…

Fish commonly known as acaris or plecos are freshwater armored catfish economically important as a food resource and as ornamental fish. Most of these species are captured in the Amazon region. However, despite its economic importance, there is a lack…

The objectives of this work were: (i) identified the risk areas of landslides, flooding and sea level rise and social vulnerabilities in different scales of analysis; (ii) analyse the risk perception of people living in this risk areas; (iii) found…

The work of Marshall McLuhan routinely crosses and problematizes boundaries of all sorts. Thinking about his work in terms of knowledge economies, along with their attendant protocols, circulations, and distributions, offers a way to contextualize the many contradictory claims about…

A mudança de paradigma de uma escola mecanicista, que encara o saber como fragmentado e estanque, para uma escola interdependente e global, ou segundo Peter Senge, de "pensamento sistémico", pode ser mediada através da utilização das Tecnologias de Informação e…

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…

The objective of this study was to establish an isolated microspore culture (IMC) protocol in wheat (Triticum aestivum L.) for use in genetic studies and to evaluate its potential for routine use in the Brazilian Wheat Breeding Program at Embrapa…

O objetivo do trabalho é avaliar e comparar indicadores ambientais associados aos recursos hídricos entre distintos sistemas de uso da terra, desde campo e oresta natural passando por sistemas agrosilvopastoril (uma modalidade de sistema agro orestal) e silvicultural até o…

RESUMO - Estudos de longa duração em bacias hidrográ cas experimentais e representativas de uma determinada condição são importantes para um melhor entendimento da dinâmica dos processos e da resposta hidrológica de bacias a eventos diversos, gerando conhecimentos e/ou tecnologias…