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Headwaters drive streamflow and lowland tracer export in a large-scale humid tropical catchment
(John Wiley and Sons Ltd, 2020)
Headwaters are generally assumed to contribute the majority of water to downstream users, but
how much water, of what quality and where it is generated are rarely known in the humid tropics.
Here, using monthly monitoring ...
Green Synthesis of Gold and Silver Nanoparticles from Plant Extracts and Their Possible Applications as Antimicrobial Agents in the Agricultural Area
(MDPI AG, 2020-09-07)
Currently, metal nanoparticles have varied uses for different medical, pharmaceutical, and
agricultural applications. Nanobiotechnology, combined with green chemistry, has great potential
for the development of novel and ...
Enhancing the tolerance of Clostridium saccharoperbutylacetonicum to ligno‐ cellulosic-biomass-derived inhibitors for efficient biobutanol production by overexpressing efflux pumps genes from Pseudomonas putida
(Elsevier Ltd, 2020)
Furan aldehydes and phenolic compounds generated during biomass pretreatment can
inhibit fermentation for biofuel production. Efflux pumps actively transport small molecules out
of cells, thus sustaining normal microbial ...
Groundwater flow modeling using iMOD for Barva and Colima aquifers in the Central Valley of Costa Rica: validation of a conceptual model using tracer data
(Universidad Nacional de Salta, 2018)
A stationary numerical model of groundwater flow was developed using iMOD to better understand the recharge processes within Barva and Colima aquifers (BCS), located in the northwestern region of the Central Valley of Costa ...
Groundwater and surface water connectivity within the recharge area of Guarani aquifer system during El Niño 2014–2016
(Wiley & Sons, 2018)
Recharge areas of the Guarani Aquifer System (GAS) are particularly sensitive and vulnerable
to climate variability; therefore, the understanding of infiltration mechanisms for aquifer recharge and surface run‐off generation ...
Insight into the stable isotopic composition of glacial lakes in a tropical alpine ecosystem: Chirripó, Costa Rica
(Wiley & Sons, 2018)
Tropical high‐elevation lakes are considered sentinels of global climate change. This work characterizes the hydrological conditions of tropical alpine glacial lakes located in the highlands of Chirripó, Costa Rica, using ...
Preface to Stable isotopes in hydrological studies in the tropics: ecohydrological perspectives in a changing climate
(Wiley & Sons, 2019)
Tropical regions (comprised between the Tropics of Cancer and Capricorn, 23.5°N to 23.5°S) cover approximately 36% of the Earth's landmass. They are home to 40% of the world's population, which is
projected to increase ...
Validación por constructo y confiabilidad de los instrumentos "cuestionario sobre las preocupaciones docentes" y "nivel de utilización de la innovación".
(Universidad Nacional (Costa Rica), 1991)
El propósito de esta investigación fue el de traducir, adaptar y validar para Costa Rica el instrumento "The Stages of Concers Questionnaire" (Hall, G.E.; A.A. George; W.L. Rutherford, 1975), bajo el título en español: ...
Influencia de la actividad volcánica y antropogénica en la composición química de la lluvia de los alrededores del Volcán Poás, Costa Rica.
(Universidad Nacional (Costa Rica), 2000)
En este trabajo se describen los resultados de un estudio sobre las características fisicoquímicas del agua de lluvia de los alrededores del Volcán Poás. El objetivo principal fue establecer un perfil general de los ...
Analogías y Metáforas: Caminos que conducen a la construcción de los conceptos y al desarrollo del razonamiento científico
(Universidad Nacional (Costa Rica), 2000)
Explora el papel de las analogías y metáforas en la conformación de oportunidades de aprendizaje en química. Es una investigación cualitativa, se realiza en tres colegios académicos diurnos, los sujetos fueron 230 estudiantes ...