Artículos científicos: Recent submissions
Now showing items 21-33 of 33
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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 ... -
Indigenous Ex Situ Conservation of Q'eqchi' Maya Medicinal Plant Resources at the Itzamma Garden-Indian Creek, Belize, Central America
(Springer Science, 2012-12-27)The Itzamma Garden and Medicinal Plant Project is a collaborative effort focused on identifying traditionally important plants used by the Q'eqchi' Maya of southern Belize. The Garden represents a cornerstone of the project ... -
Temporal and spatial variations in organic and elemental carbon concentrations in PM10/PM2.5 in the metropolitan area of Costa Rica, Central America
(Science Direct, 2013-01)PM2.5 and PM10 samples were collected at 4 and 14 sampling sites, respectively, located in the Metropolitan area of Costa Rica (MACR), during 2010-2011. These sites were representative of commercial, industrial and residential ... -
Predicción de biomasa y carbono en plantaciones clonales de Tectona grandis L.f.
(Universidad Distrital Francisco Jose de Caldas, 2021-01-01)Los modelos matemáticos para predecir biomasa son en la actualidad una opción que facilita y mejora el cálculo de la capacidad de mitigación del cambio climático de un ecosistema, pues generan información fundamental ... -
Efficacy of Souroubea-Platanus Dietary Supplement Containing Triterpenes in Beagle Dogs Using a Thunderstorm Noise-Induced Model of Fear and Anxiety
(Multidisciplinary Digital Publishing Institute, 2021-04-03)A novel botanical dietary supplement, formulated as a chewable tablet containing a defined mixture of Souroubea spp. vine and Platanus spp. Bark, was tested as a canine anxiolytic for thunderstorm noise-induced stress ... -
Chemical characterization of filterable PM2.5 emissions generated from regulated stationary sources in the Metropolitan Area of Costa Rica
(Elsevier, 2017-01-14)Filterable PM2.5 concentrations and their chemical characterizations were analyzed for 67 boilers and 25 indirect furnaces located in the Metropolitan Area of Costa Rica from February 2014 to November 2015. The PM2.5 samples ... -
Climatic and edaphic controls over tropical forest diversity and vegetation carbon storage
(Springer Nature, 2020-03-19)Tropical rainforests harbor exceptionally high biodiversity and store large amounts of carbon in vegetation biomass. However, regional variation in plant species richness and vegetation carbon stock can be substantial, and ... -
La potencial contribución del Plan Regulador Territorial frente al desastre en la Ciudad de Upala, Provincia de Alajuela, Costa Rica, asociado al paso del Huracán Otto
(Universidad Nacional, Costa Rica, 2020-04-22)Se ha especulado en los programas de opinión sobre los beneficios que pudo haber tenido el Plan Regulador del Cantón de Upala, elaborado por la Escuela de Ciencias Geográficas de la Univer-sidad Nacional, de haber sido ... -
Water-Soluble Anions in PM10 Samples Collected in the Metropolitan Area of Costa Rica: Temporal and Spatial Variations
(MDPI journals, 2021-09-28)The concentrations of water-soluble anions present in PM10 collected from ambient air in four sites of Costa Rica’s greater metropolitan area (GAM) were analyzed. Samples were collected over a 24-h period for three days ... -
Tabla de volumen comercial para teca clonal en diferentes índices de sitio en la Zona Norte de Costa Rica
(Universidad Nacional, Costa Rica, 2021-01-01)Es necesario cuantificar y predecir con confiabilidad el volumen de madera para facilitar la gestión de la producción forestal. El artículo tiene como objetivo elaborar tablas de volumen comercial a partir de ... -
A botanical extract of Souroubea sympetala and its active principle, betulinic acid, attenuate the cortisol response to a stressor in rainbow trout, Oncorhynchus mykiss
(Elsevier, 2016-09-28)The capacity of the traditional anxiolytic plant, Souroubea sympetala, and its bioactive principle, betulinic acid (BA), to lower cortisol levels in rainbow trout, Oncorhynchus mykiss, was investigated. Effects at the level ... -
Blown by the wind: the ecology of male courtship display behavior in orchid bees
(Ecological Society of America, 2017-02-01)Many insects rely on chemical signals to transmit precise information on the location, identity, and quality of potential mates. Chemical signals are often broadcasted at sites with physical properties that maximize signal ... -
Producción de enzimas ligninolíticas y biodegradación del herbicida diuron por hongos de la pudrición blanca colectados en Costa Rica, cultivados sobre rastrojo de piña
(Universidad Nacional (Costa Rica). Escuela de Ciencias Ambientales, 2017)En esta investigación se evaluó la capacidad de dos cepas de hongos basidiomicetos de la pudrición blanca (2922-A y 2922-B) previamente aislados de bosques costarricenses, para producir enzimas lignocelulolíticas lacasa y ...