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Modelo de un sistema de gestión integrado bajo las normas INTE-ISO/IEC 17025:2017 e INTE/ISO 31000:2011 para laboratorios de ensayo con vinculación externa de la Universidad Nacional
(Universidad Nacional, Costa Rica, 2019)
Este proyecto de graduación tiene como objetivo principal el de proponer un modelo de sistema de gestión integrado para laboratorios de ensayo con vinculación externa de la Universidad Nacional en las normas INTE-ISO/IEC ...
Relations Between Bulk Precipitation, PM10 Composition and Meteorological Conditions in the Metropolitan Area of Costa Rica
(The Open Atmospheric Science Journal, 2012-02-06)
Concentrations of inorganic ions (Cl -, H +, SO 4 2-, NO 3 -, NH 4 +, Na +, K +, Ca 2+, Mg 2+) and metals (V, Ni, Cu, Pb, Cr Mn, Al, Fe) in bulk precipitation and PM 10 samples collected in the metropolitan area of Costa ...
Estrategias locales de lucha contra el cambio climático con enfoque participativo: estudio de casos de la experiencia en Costa Rica, 2011-2018
(Universidad Politécnica de Valencia, 2020-12)
El objeto de estudio de la investigación es el proceso desarrollado en las estrategias participativas de cambio climático de tres municipios de Costa Rica (su metodología, aciertos, aprendizajes, análisis colectivo con los ...
New Bruce-ladder multiplex PCR assay for the biovar typing of Brucella suis and the discrimination of Brucella suis and Brucella canis
(Revista de Microbiología Veterinaria, 2011-06-28)
Rapid and specific identification of Brucella suis at the biovar level is necessary because
some of the biovars that infect animals are pathogenic for humans. None of the molecular
typing methods described so far are ...
Inhibition of human pathogenic fungi by ethnobotanically selected plant extracts
(Deutschsprachige Mykologische Gesellschaft, 2003-02-14)
In this study, 36 extracts derived from 29 plant species selected using an ethnobotanical approach were tested for antifungal activity against a taxonomically diverse group of 13 human pathogenic fungi. We compared the ...
Antifungal Saponins from the Maya Medicinal Plant Cestrum schlechtendahlii G. Don (Solanaceae)
(Wiley, 2015-12-15)
Bioassay-guided fractionation of the crude extract (80% EtOH) of the leaves of Cestrum schlechtendahlii, a plant used by Q'eqchi' Maya healers for treatment of athlete's foot, resulted in the isolation and identification ...
Anti-inflammatory and antinociceptive activities of Loasa speciosa in rats and mice
(Elsevier, 2003)
In the range of doses of 250–500 mgykg (given i.p.) the aqueous extract of Loasa speciosa leaves showed an inhibitory effect on leukocyte migration, and a reduction on the pleural exudate, as well as dose-dependent ...
Ethnopharmacology of Souroubea sympetala and Souroubea gilgii (Marcgraviaceae) and identification of betulinic acid as an anxiolytic principle
(Elsevier, 2015-05)
The neotropical lianas Souroubea gilgii and Souroubea sympetala (Marcgraviaceae) were chosen for study as part of a phytochemical discovery strategy focusing on rare plant families in Central America. In participatory ...
The life cycle carbon balance of selective logging in tropical forests of Costa Rica
(Wiley Periodicals, 2020-06-01)
The effect of logging on atmospheric carbon concentrations remains highly contested, especially
in the tropics where it is associated to forest degradation. To contribute to this discussion, we
estimated the carbon balance ...
Priorización de áreas y lineamientos de manejo para la rehabilitación de la subcuenca del Río Reventado
(Universidad Nacional, Costa Rica, 2021-10)
El presente trabajo se realizó en la subcuenca del río Reventado, ubicada en la provincia de Cartago debido a su gran importancia tanto ambiental como económica a nivel nacional que, sin embargo, presenta una grave ...