There is no published information on greenhouse gas emision in public schools of Costa Rica. Using as reference the national voluntary standard INTE / ISO 12-01-06: 2011 I measured emissions in three primary schools: ...

A filtração em margem (FM) consiste na obtenção de água de um aquífero e de um manancial por meio de poços ou galerias nas margens de mananciais superficiais com conexão hidráulica entre ambos. Para determinar as áreas ...

In Costa Rica the development of cryopreservation research is recent. It started in 1990 with a project on bananas and plantains at the Agronomic Center for Research and Training (CATIE), followed by research on coffee, ...

In vitro conservation of chayote (Sechium edule). The in vitro medium-term conservation technique was assayed on chayote. Survival was assayed after the addition of high concentration of sucrose (0, 30, 50, 60, 70 y 80 ...

Transgenic crops of plant origin are widely used globally in animal and male diets, however, no genetically modified animal has been approved for human consumption. This article mentions about the process and the regulated ...

In vitro culture of Geophila macropoda (Ruiz & Pav. DC) from zygotic embryos. The goal of this research was to develop a protocol for the in vitro culture of Geophila macropoda. The work was conducted in Guácimo, Limón, ...

The ‘value-free ideal’ has been called into question for several reasons. It does not include “epistemic values”—viewed as characteristic of ‘good science’—and rejects the so-called ‘contextual’, ‘non-cognitive’ or ...

This article presents the results of a piece of research that analyzed the views on the nature of science (NOS) among student teachers enrolled in programs of Primary Education at two public universities in Spain. Previous ...