Browsing Facultad de Ciencias de la Tierra y el Mar by Title
Now showing items 885-904 of 1196
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Polychaetes associated with decaying wood in Térraba mangrove, South Pacific, Costa Rica
(Universidad de Costa Rica, 2015-04)The present study shows spatial patterns in the faunal assemblage of decaying wood and sediments, with emphasis on the polychaetes. The survey was executed across a salinity gradient in a tropical mangrove estuary of Costa ... -
Polycyclic aromatic hydrocarbons in filterable PM2.5 emissions generated from regulated stationary sources in the metropolitan area of Costa Rica
(Elsevier, 2017-09)This study analyzed the profiles of polycyclic aromatic hydrocarbons (PAHs) in filterable PM2.5 particles collected from a total of 71 boilers and 22 indirect type furnaces that burn liquid and biomass fuels in the ... -
Polycyclic aromatic hydrocarbons in PM2.5 and PM10 atmospheric particles in the Metropolitan Area of Costa Rica: Sources, temporal and spatial variations
(Elsevier, 2017-03)Polycyclic aromatic hydrocarbons (PAHs) concentrations in PM10 and PM2.5 particles were measured at 14 monitoring sites (12 for PM10 and 2 for PM2.5), located in the Metropolitan Area of Costa Rica, from January to November ... -
Population status of terrestrial mammals’ in two protected areas in the west central region of Costa Rica [Estado poblacional de mamíferos terrestres en dos áreas protegidas de la región central occidental de Costa Rica]
(Revista de Biología Tropical, 2017-11-16)In the West Central Region of Costa Rica, there are plenty of forests under public and private protection; however, they are increasingly exposed to fragmentation. This is the first report about species richness and the ... -
Population status, connectivity, and conservation action for the endangered Baird's tapir
(Elsevier Ltd, 2020-05)Although many large mammals currently face significant threats that could lead to their extinction, resources for conservation are often scarce, resulting in the need to develop efficient plans to prioritize conservation ... -
Posters (carteles) producidos en base a giras a volcanes (periodo 2015-2015
(Universidad Nacional, Costa Rica, 2016)Posters (carteles) producidos en base a giras a volcanes (periodo 2015-2015) -
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 ... -
Potencial de la miel de Tetragonisca angustula y Scaptotrigona pectoralis para la formulación de un medicamento antibacteriano y cicatrizante de uso veterinario
(Universidad Nacional, Costa Rica, 2021-08)Actualmente, las infecciones causadas por cepas antibiótico resistentes de Staphylococcus sp. productoras de biofilms tienen elevada importancia clínica (Zamora et al, 2017). Esto se debe a la protección que les brinda la ... -
Potencial de reducción de emisiones de GEI del Centro de Generación ArCoSa (complejo de generación hidroeléctrico) mediante la implementación de tecnologías limpias
(Universidad Nacional (Costa Rica). Escuela de Ciencias Ambientales, 2017)La cuantificación de emisiones de gases de efecto invernadero emitidas por las instituciones públicas corresponde a un compromiso asumido por el Gobierno y una necesidad para la mejora de la condición socio ambiental de ... -
Potencial forrajero de cuatro variedades costarricenses de maíz (Zea mays) evaluadas a diferentes densidades de siembra en Santa Lucía, Barva de Heredia / Manuel Ignacio Méndez Soto.. Heredia, Costa Rica: M. Méndez S., 2017
(Universidad Nacional (Costa Rica). Escuela de Ciencias Agrarias, 2018)Evalua el potencial forrajero, nutritivo y costos de producción de cuatro variedades de maíz costarricenses, manejadas a cuatro densidades de siembra en la Finca Experimental Santa Lucía en Barva de Heredia entre los meses ... -
Precipitous decline of white-lipped peccary populations in Mesoamerica
(Elsevier Ltd, 2020-02)Large mammalian herbivores are experiencing population reductions and range declines. However, we lack regional knowledge of population status for many herbivores, particularly in developing countries. Addressing this ... -
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 ... -
Preguntas sobre seguridad ocupacional en la encuesta de empleo del INE de Guatemala
(SALTRA / IRET-UNA, 2015-09-09) -
Prenatal and postnatal manganese teeth levels and neurodevelopment at 7, 9, and 10.5 years in the CHAMACOS cohort
(Elsevier, 2015-11)Background: Numerous cross-sectional studies of school-age children have observed that exposure to manganese (Mn) adversely affects neurodevelopment. However, few prospective studies have looked at the effects of both ... -
Prenatal DDT and DDE exposure and child IQ in the CHAMACOS cohort
(Elsevier, 2015-12)Although banned in most countries, dichlorodiphenyl-trichloroethane (DDT) continues to be used for vector control in some malaria endemic areas. Previous findings from the Center for the Health Assessment of Mothers and ... -
Prenatal Exposure to Perfluoroalkyl Substances and Adiposity in Early and Mid-Childhood
(Environmental Health Perspectives, 2017-03-01)Background: Few studies have examined whether prenatal exposure to perfluoroalkyl substances (PFASs) is associated with childhood adiposity. Objective: We examined associations of prenatal exposure to PFASs with adiposity ... -
Prenatal Exposure to Phthalates and Neurodevelopment in the CHAMACOS Cohort
(National Institute of Environmental Health Sciences, 2019-10-25)Background: Previous studies suggest that prenatal exposure to phthalates, ubiquitous synthetic chemicals, may adversely affect neurodevelopment. However, data are limited on how phthalates affect cognition, executive ... -
Prenatal mancozeb exposure, excess manganese, and neurodevelopment at 1 year of age in the Infants' Environmental Health (ISA) study
(Environmental Health Perspectives, 2018-05-29)BACKGROUND: Although growing evidence suggests that early-life excess manganese (Mn) impairs neurodevelopment, data on the neurodevelopmental effects of mancozeb, a fungicide containing Mn, and its main metabolite ... -
Prenatal pesticide exposure and respiratory health outcomes in the first year of life: Results from the infants’ Environmental Health (ISA) study
(Universidad Nacional, Costa Rica, 2020-01-29)Background: Growing evidence suggests that pesticide exposure may influence respiratory health, but data in young children are very limited. We examined the association of prenatal pesticide exposure with lower respiratory ...