Browsing Artículos científicos by Title
Now showing items 1-20 of 50
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Acercamiento a los procesos de modelación de la calidad del agua en una subcuenca. Caso del río Virilla, Costa Rica
(Universidad Nacional, Costa Rica, 2021-01-31)Se realizó la implementación de un modelo de calidad del agua superficial, a través del cual se procuraba hacer un primer acercamiento a los procesos de modelado matemático como insumo para la gestión integrada ... -
An anatomical comparison between bunch and fruit of oil palm with pineapple leaf and three woods from plantations in Costa Rica
(Journal of Oil Palm Research, 2013-04)Elaeis guineensis, Ananas comusus and forest plantations are planted widely in Costa Rica; however their residues (8000 t) are not utilised. The main objective of this work was to undertake an anatomical description of the ... -
Analysis of energy transfer and ternary non-covalent filler/matrix/UV stabilizer interactions in carbon nanofiber and oxidized carbon nanofiber filled poly(methyl methacrylate) composites
(Elsevier, 2011-10-27)Ternary non-covalent interactions between carbon nanofibers (CNFs), oxidized carbon nanofibers (ox- CNFs), poly(methyl methacrylate) (PMMA) chains, and benzotriazole-containing UV stabilizers were analyzed using ... -
Aspectos del contexto socioambiental que inciden en la contaminación del recurso hídrico en un cantón urbano
(Universidad Nacional (Costa Rica), 2021-07-01)El objetivo fue identificar y analizar los aspectos más relevantes del contexto socioambiental de un cantón urbano, que inciden en la contaminación del recurso hídrico. Se realizó una investigación descriptiva con un ... -
Ácido l-poliláctico (Pla) y nanotubos de carbono de pared múltiple (ntcpm) con potenciales aplicaciones industriales
(Universidad Nacional de Colombia, 2021)En términos generales, es bien conocida la cualidad que poseen algunos polímeros de cambiar sus propiedades físicas y químicas finales mediante la adición de nanopartículas a la matriz polimérica para producir un ... -
Base de datos sobre la calidad del agua superficial en río Bermúdez
(Universidad Nacional (Costa Rica), 2021-06-21) -
Bayesian estimates of the mean recharge elevations of water sources in the Central America region using stable water
(Elsevier, 2020)Study region: Central America. Study focus: Knowledge of the mean recharge elevation (MRE) of water resources is important where water resources are vulnerable. The purpose of this study was to develop and apply a Bayesian ... -
Biogardens as constructed wetlands in tropical climate: A case study in the Central Pacific Coast of Costa Rica
(Elsevier, 2019-03-25)In Costa Rica, <10% of wastewater is treated before its discharge. This generates a significant impact on the environment, public health, and tourism industry, which is one of the country's main economic activities. ... -
Biogenic silica-based microparticles obtained as a sub-product of the nanocellulose extraction process from pineapple peels
(Nature Publishing Group, 2018-07-10)Silica in plant tissues has been suggested as a component for enhancing mechanical properties, and as a physical barrier. Pineapples present in their shell and bracts rosette-like microparticles that could be associated ... -
Biosensors for the Detection of Bacterial and Viral Clinical Pathogens
(MDPI AG, 2020-12-04)Biosensors are measurement devices that can sense several biomolecules, and are widely used for the detection of relevant clinical pathogens such as bacteria and viruses, showing outstanding results. Because of the latent ... -
Characterization of surface water isotope spatial patterns of Scotland
(Elsevier B.V., 2018-07-24)The extended National Waters Inventory of Scotland (NWIS) monitoring network in combination with an extensive, supplementary low flow sampling campaign was used to create isoscapes of surface water for management purposes ... -
Chemical and functional characterization of antimicrobial metabolites isolated from ascidian Rhopalaea Birkelandi
(Universidad Nacional (Costa Rica), 2011-12)Marine ecosystems have a very large diversity of resources, most of them still partially unknown, and a few others exploited for development of new industrial and toxicological products. The objective of this investigation ... -
Chirripó Hydrological Research Site: advancing stable isotope hydrology in the Central American Páramo
(2020-01-25)The Chirripó Hydrological Research Site (CHRS) is located within the Chirripó National Park, Costa Rica (between 3,100-3,820 m asl) whereby ~100 km2 are covered by Páramo, a high‐elevation tropical grassland ecosystem. A ... -
Concentración de mercurio en el aire
(2013-08-22)El mercurio es un metal tóxico emitido a la atmósfera mediante procesos naturales y antropogénicos. Los procesos naturales incluyen: la volatilización desde medios acuáticos y vegetación, la desgasificación de materiales ... -
Deciphering key processes controlling rainfall isotopic variability during extreme tropical cyclones
(2019-09)The Mesoamerican and Caribbean (MAC) region is characterized by tropical cyclones (TCs), strong El Niño-Southern Oscillation events, and climate variability that bring unique hazards to socio-ecological systems. Here we ... -
DOC Transport and Export in a Dynamic Tropical Catchment
(American Geophysical Union, 2019)Abstract Dissolved organic carbon (DOC) transport and export from headwater forests into freshwaters in highly dynamic tropical catchments are still understudied. Here we present a DOC analysis (2017) in a pristine and ... -
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 ... -
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 ... -
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 ...
