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Las Noticias Centroamericanas. Volumen 1 Completo.
(SALTRA / IRET-UNA, 2005-01)
Las Noticias Centroamericanas. Volumen 1 Completo. 2005
Dry-matter yields and crude protein and rumen degradable protein concentrations of three Arachis pintoi ecotypes at different stages of regrowth in the humid tropics
(Blackwell Publishing Ltd., 2005-08-15)
Well-established stands of three ecotypes of Arachis
pintoi (CIAT 17434, 18744 and 18748) were harvested
from replicated plots (three blocks, each containing
three plots for each ecotype) during the two dominant
seasons ...
Assessment of pesticide exposure in the agricultural population of Costa Rica
(British Occupational Hygiene Society, 2005)
We describe a model for the retrospective assessment of parental exposure to 26 pesticides, selected by toxicity-based prioritization, in a population-based case–control study of childhood leukaemia in Costa Rica (301 ...
Determinación del historial de exposiciones en la epidemiolgía ocupacional
(World Health Organization, 2005-01)
La validez de los indicadores de exposición es una condición necesaria en epidemiología si se
han de obtener resultados válidos en la medición de los riesgos asociados con la exposición a
agentes nocivos en el entorno ...
Determinants of dermal exposure among Nicaraguan subsistence farmers during pesticide applications with backpack sprayers
(British Occupational Hygiene Society, 2005)
Identification of pesticide exposure determinants has become an issue in explaining exposure variability and improving control measures. Most studies have been conducted in industrialized countries. The aim of this study ...
Contribution of live fences to the ecological integrity of agricultural landscapes
(Universidad Nacional, Costa Rica., 2005-08-16)
Live fences are conspicuous features of agricultural landscapes across Central America but there is remarkably little
information about their abundance, distribution, and function. Here we present a detailed analysis of: ...
Development of predictive models to explain the distribution of the West Indian manatee Trichechus manatus in tropical watercourses
(Universidad Nacional, Costa Rica., 2005-05-31)
Logistic regressions were used to study the relationship between habitat variables and the use of tropical watercourses by the
West Indian manatee Trichechus manatus at Northeastern Costa Rica and Southern Nicaragua. ...