Browsing Artículos científicos by Title
Now showing items 80-99 of 254
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Ecosystemic Assessment of Surface Water Quality in the Virilla River: Towards Sanitation Processes in Costa Rica
(Universidad Nacional (Costa Rica), 2018)Water quality information is essential supporting decision making in water management processes. The lack of information restricts, at some point, the implementation of adequate sanitation, which is still scarce in ... -
Editorial for ‘Issue focus on 2nd Costa Rica Biophysics Symposium - March 11th–12th, 2021’
(Springer (Alemania), 2022)This Editorial describes both the motivation for, and the five articles appearing in, the Issue Focus dedicated to the 2nd Costa Rica Biophysics Symposium which was held in March 2021. Some recent history about both the ... -
Effect of the soft segment on the fatigue behavior of segmented polyurethanes
(Elsevier, 2000)Effect of the soft-segment structure and molecular weight on the microphase separation in segmented polyurethanes (SPU) was determined by means of differential scanning calorimetry, small-angle X-ray scattering, dielectric ... -
Electrospun nanofibers: A nanotechnological approach for drug delivery and dissolution optimization in poorly water-soluble drugs
(International Association of Physical Chemists, 2020)Electrospinning is a novel and sophisticated technique for the production of nanofiberswithhigh surface area, extreme porous structure, small pore size, and surface morphologies that make them suitable ... -
Emerging contaminants in trans-american waters
(Institute for Environmental Research in Hydrographic Basins (IPABHi), 2019)BSTRACT Industrial development has made new products available to people to make their lives easier. Items such as food, cleaning, personal care and health products, among others, are processed, sold and consumed daily ... -
Emisiones de contaminantes atmosféricos provenientes de calderas
(2013-08-22)Las emisiones de contaminantes atmosféricos provenientes desde fuentes fijas, como son las calderas, están reguladas por el Reglamento sobre Emisión de Contaminantes Atmosféricos provenientes de Calderas (DE-30222-S-MINAE). ... -
Emisiones de contaminantes atmosféricos provenientes desde fuentes fijas
(2013-08-22)Las emisiones de contaminantes atmosféricos provenientes desde fuentes fijas están reguladas por el Reglamento sobre Emisión de Contaminantes Atmosféricos provenientes de Calderas (DE-30222-S-MINAE). La normativa presente ... -
Emisiones de óxido nitroso y metano en pasturas activas en la zona de vida bosque húmedo tropical en Costa Rica
(Universidad del Cauca. Revista de la Facultad de Ciencias Agrarias, 2023-03)El manejo activo de los pastos incide en la productividad animal y en los procesos biogeoquímicos del suelo, el ciclaje de nutriente, donde la gestión de los pastos es un factor relevante para mantener estos procesos ... -
Empleo de melaza de caña de azúcar para la obtención y caracterización de poliuretanos potencialmente biodegradables. I
(Universidad del País Vasco (España), 2008-07)Se realizó un estudio para comprobar la efectiva sustitución parcial de los reactivos de uso común en la elaboración de espumas rígidas de poliuretanos (EPU) provenientes de los residuos de la agroindustria azucarera ... -
End member and Bayesian mixing models consistently indicate near-surface flowpath dominance in a pristine humid tropical rainforest
(John Wiley & Sons Ltd, 2021)The impacts of forest conversion on runoff generation in the tropics have received much interest, but scientific progress is still hampered by challenging fieldwork conditions and limited knowledge about runoff mechanisms. ... -
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 ... -
ENSO sentinels in the Americas' humid tropics: We need combined hydrometric and isotopic monitoring for improved El Niño and La Niña impact prediction
(John Wiley & Sons (Estados Unidos), 2023)This Scientific Briefing presents results from a nearly 10-year hydrometric and isotope monitoring network across north-central Costa Rica, a region known as a headwater-dependent system. This monitoring system has ... -
Environmental impact assessment of 17 construction projects in various university campuses
(WIT Press, 2018)Environmental impact assessment (EIA) is the process of evaluating the environmental consequences of a plan, policy, programme or any other project prior to the execution of the proposed action; it is the primary ... -
Environmental Impact Assessment of 17 Construction Projects in Various University Campuses
(WIT Press (Reino Unido), 2018)Environmental impact assessment (EIA) is the process of evaluating the environmental consequences of a plan, policy, programme or any other project prior to the execution of the proposed action; it is the primary instrument ... -
Environmental Impact Follow Up: A Case Study of Several Construction Projects in Various University Campuses
(WIT Press (Reino Unido), 2019)Construction projects have become a driving force for the worldwide economy, with significant impacts on energy consumption, environmental emissions, and social issues. Building constructions and operations have massive, ... -
Environmental isotope applications in Latin America and the Caribbean region
(Taylor & Francis, 2020-11)This Special Issue illustrates the use of environmental isotopes in studying and assessing hydrogeological and ecohydrological issues in the Latin America and the Caribbean (LAC) region. The issue includes twenty selected ... -
Estudio a nanoescala de las interacciones entre liposomas recubiertos con biopolimeros y superficies sólidas de biomateriales
(Universidad del País Vasco (España), 2010)The study is based on finding an explanation for the opposite behavior observed at the interface between hard and soft materials, specifically on biological systems, like liposomes, when they interact with inorganic surfaces ... -
Estudio bioprospectivo, actividad antibiótica y antioxidante del exocarpio del fruto de santol (Sandoricum koetjape)
(Universidad Nacional de Costa Rica, 2019-01-31)Con el fin de evaluar las principales propiedades antioxidantes y antibióticas del exocarpio del fruto de Santol (Sandoricum koetjape), se realizó una bioprospección sobre este, así como una ... -
Estudio cinético de la degradación isotérmica de la quitina y el quitosano obtenidos a partir del camarón heterocarpus vicarius por medio de análisis termogravimétrico
(Universidad del País Vasco (España), 2010-03)La cinética de la degradación de la quitina y el quitosano empleando análisis termogravimétricos en modo isotérmico fue estudiada en una atmósfera inerte. La desacetilación de la quitina para obtener quitosano muestra que ... -
Estudio de la actividad antibacteriana de los extractos orgánicos liquénicos obtenidos de Lobaria subdissecta y Parmotrema latissimum
(Universidad Nacional (Costa Rica), 2015-07-31)Se evaluó la actividad antimicrobiana de 4 extractos orgánicos de los líquenes Lobaria subdissecta y Parmoterma latissimum empleando el método de disco-difusión con una batería microbiana de 2 bacterias Gram positivas y 2 ...