Browsing Facultad de Ciencias de la Tierra y el Mar by Title
Now showing items 341-360 of 1114
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Dolor musculoesquelético en trabajadores de América Central: resultados de la I Encuesta Centroamericana de Condiciones de Trabajo y Salud
(Panamerican Health Organization, 2015)El artículo tiene como objetivo examinar la prevalencia de dolor musculoesquelético (DME) en los seis países de habla hispana de América Central con un instrumento único, la I Encuesta Centroamericana de Condiciones de ... -
Drones Swoop in to Measure Gas Belched from Volcanoes
(EOS. Science News by AGU, 2018-07-25)Los gases volcánicos son importantes herramientas de pronóstico de erupciones que se utilizan a menudo en el monitoreo de volcanes. Sin embargo, la recolección de muestras de gas requiere que los científicos ingresen a ... -
Dry-matter yields and crude protein and rumen degradable protein concentrations of three Arachis pintoi ecotypes at different stages of regrowth in the humid tropics
(Blackwell Publishing Ltd., 2005-08-15)Well-established stands of three ecotypes of Arachis pintoi (CIAT 17434, 18744 and 18748) were harvested from replicated plots (three blocks, each containing three plots for each ecotype) during the two dominant seasons ... -
Dung beetle and terrestrial mammal diversity in forests, indigenous agroforestry systems and plantain monocultures in Talamanca, Costa Rica
(Universidad Nacional, Costa Rica., 2006)In order to explore the importance of indigenous agroforestry systems for biodiversity conservation, we compared the abundance, species richness and diversity of dung beetles and terrestrial mammals across a gradient of ... -
Duration-amplitude distribution of volcanic tremor
(American Geophysical Union, 2003)The duration-amplitude distribution of volcanic tremor was examined in eight volcanoes and one geothermal area. An exponential model, implying a scale-bound source process, is found to be a better fit to the data than a ... -
Dust exposure in workers from grain storage facilities in Costa Rica
(Escuela de Ingeniería en Seguridad Laboral e Higiene Ambiental (EISLHA), Instituto Tecnológico de Costa Rica (ITCR), 2017)About 12 million workers are involved in the production of basic grains in Central America. However, few studies in the region have examined the occupational factors associated with inhalable dust exposure. About the ... -
Early Toxic Effects in a Central American Native Fish (Parachromis dovii) Exposed to Chlorpyrifos and Difenoconazole
(Society of Environmental Toxicology and Chemistry, 2021-03-18)In Costa Rica, agriculture is one of the most important economic activities. Chlorpyrifos and difenoconazole have been identified as agrochemicals widely used in banana and pineapple crops in the Caribbean area of the ... -
Early-life exposure to Perfluoroalkyl substances and childhood metabolic function
(Environmental Health Perspectives, 2017-03-01)Background: Perfluoroalkyl substances (PFASs) are synthetic chemicals that may persist in the environment and in humans. There is a possible association between early-life PFAS exposure and metabolic dysfunction in later ... -
Earthquake and tsunami forecasts: Relation of slow slip events to subsequent earthquake rupture
(National Academy of Sciences, 2014-11-17)The 5 September 2012 Mw 7.6 earthquake on the Costa Rica subduction plate boundary followed a 62-y interseismic period. Highprecision GPS recorded numerous slow slip events (SSEs) in the decade leading up to the earthquake, ... -
Earthquake magnitude calculation without saturation from the scaling of peak ground displacement
(Geophysical Research Letters, 2015-06-02)GPS instruments are noninertial and directly measure displacements with respect to a global reference frame, while inertial sensors are affected by systematic offsets—primarily tilting—that adversely impact integration to ... -
Ecological corridors in Costa Rica: An evaluation applying landscape structure, fragmentation-connectivity process, and climate adaptation
(Society for Conservation Biology, 2021-05-20)In recent years, ecological corridors have been proposed on a global scale as a response to the accelerated process of natural ecosystem fragmentation, mainly as a result of human impact. In accordance with this trend, ... -
Ecología de las moscas (diptera) y sus parasitoides asociados al cultivo de granadilla (passiflora ligularis juss) en Santa Cruz de León Cortés
(Universidad Nacional (Costa Rica), 2022-11)El siguiente trabajo de investigación se realizó durante los meses de octubre, noviembre y diciembre del 2020 en Santa Cruz de León Cortés, en tres fincas dedicadas a la producción comercial de granadilla. El objetivo de ... -
Ecología trófica de tiburones toro juveniles (carcharhinus leucas) en dos sistemas estuarinos de Costa Rica
(Universidad Nacional, Costa Rica, 2021-05)El tiburón toro (Carcharhinus leucas) es un depredador tope capaz de moverse entre ambientes de agua dulce y agua salada en zonas tropicales y subtropicales del mundo. Esta especie utiliza los sistemas estuarinos como áreas ... -
Ecología urbana de abejas y educación ambiental : un estudio de caso en Escazú, Costa Rica
(Universidad Nacional, Costa Rica, 2019)Las abejas nativas poseen una gran importancia ecosistémica, debido a los servicios de polinización que permiten la perpetuidad de los bosques y cultivos. Además, mediante la apicultura y meliponicultura, favorecen la ... -
Ecotoxicological characterization of a tropical soil after diazinon spraying
(Springer, 2012-07-04)The impact of diazinon spraying in an agricultural tropical soil through the evaluation of both the habitat and retention functions of the soil system was never reported. To fill this gap, five times the recommended dose ... -
Ecotoxicological evaluation of aquaculture and agriculture sediments with biochemical biomarkers and bioassays: antimicrobial potential exposure
(Journal of Environmental Biology, 2014-01)Inappropriate practices and lack of regulations regarding antimicrobial use in agricultural production of developing countries increase the risk of exposure to aquatic ecosystems. Sediments may act as sink of antimicrobial ... -
Edible Flowers, Old Tradition or New Gastronomic Trend: A First Look at Consumption in Portugal versus Costa Rica
(Multidisciplinary Digital Publishing Institute, 2020-07-23)This study investigated the knowledge and use of edible flowers (EF) in two countries, Portugal, in Europe, and Costa Rica, in Latin America, and aimed to evaluate the similarities and/or differences regarding the ... -
Edificaciones 2007, Cantón de Poás
(Escuela de Ciencias Geográficas, 2008-06)Ubicación de edificaciones (acueductos, bares y restaurantes, beneficio, bodegas y almacenaje, casetilla, cementerio, centro de acopio, centros educativos, centros turísticos, equipamiento eléctrico y telecomunicaciones, ... -
Education as a tool for addressing the extinction crisis: Moving students from understanding to action
(Universidad Nacional, Costa Rica., 2010)Human activity is leading to mass species extinctions worldwide. Conservation biology (CB) courses, taught worldwide at universities, typically focus on the proximal causes of extinction without teaching students how ... -
Efectividad y viabilidad económica del nematicida Nemaxxion Biol y el bioestimulante Radiax® sobre las poblaciones de Meloidogyne spp. y Pratylenchus spp, y el desarrollo vegetativo y productivo del café (Coffea arabica en la Hacienda Naranjo, Costa Rica
(Universidad Nacional, Costa Rica, 2019)Analiza el efecto del nematicida Nemaxxion Biol y el bioestimulante Radiax® sobre las poblaciones de Meloidogyne spp. y Pratylenchus spp. en una plantación de café de tres años, mediante el conteo de las poblaciones en ...