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Groundwater recharge mechanisms inferred from isoscapes in a complex tropical mountainous region
(AGU Publications, 2016-05-23)
Stable isotope variations and groundwater recharge mechanisms remain poorly understood across the tropics, particularly in Central America. Here stable isotopes (δ18O and δ2H) in groundwater, surface water, and rainfall ...
Physicochemical and chromatographic method of characterization of Matricaria recutita tinctures
(2016)
The pharmacological activity of medicinal products containing plant materials depends on their specific components. However, these components are not characterized in their entirety in all cases. Therefore, manufacturing ...
Identifying groundwater recharge connections in the Moscow (USA) sub-basin using isotopic tracers and a soil moisture routing model
(Springer, 2016)
Globally, aquifers are suffering from large abstrac tions resulting in groundwater level declines. These declines can be caused by excessive abstraction for drinking water, irrigation purposes or industrial use. Basaltic ...
Evaluación estadística de los niveles de mercurio detectados en peces de pico, en Costa Rica, en el periodo 2003-2013
(Universidad Nacional (Costa Rica), 2016-07-31)
Los peces de pico, como el marlín, el pez vela y el pez espada, son depredadores pelágicos superiores de la cadena alimenticia; los especímenes de gran tamaño contienen en sus tejidos niveles ...
Evaluación de la concentración de los aldehídos en el aire en la Reserva Biológica Monteverde y en la ciudad de Heredia, Costa Rica
(Universidad Nacional (Costa Rica), 2016)
Se determinó la concentración de seis aldehídos en muestras de aire, durante abril-junio de 2015, en la Reserva Bioló gica Monteverde (RBM) y en Heredia, Costa Rica. El formaldehído, el acetaldehído, el propanal, el butanal, ...
Aplicación de un método para evaluar el impacto ambiental de proyectos de construcción de edificaciones universitarias
(2016)
La evaluación de impacto ambiental consiste en la identificación y valoración de los impactos potenciales de proyectos respecto a los componentes físicos, químicos y biológicos, culturales, económicos y sociales, con el ...
Isotopic composition in precipitation and groundwater in the northern mountainous region of the Central Valley of Costa Rica
(Taylor & Francis, 2016)
The linkage between precipitation and recharge is still poorlyunderstood in the Central America region. This study focuses onstable isotopic composition in precipitation and groundwater in the northern mountainous region ...
Key drivers controlling stable isotope variations in daily precipitation of Costa Rica: Caribbean Sea versus Eastern Pacific Ocean moisture sources
(Elsevier, 2016)
Costa Rica is located on the Central American Isthmus, which receives moisture inputs directly from the Caribbean Sea and the Eastern Pacific Ocean. This location includes unique mountainous and lowland microclimates, but ...
Tracking the water fingerprints of Cocos Island: A stable isotope analysis of precipitation, surface water, and groundwater
(Revista de Biología Tropical, 2016)
The use of stable isotopes of water, both δ2H and δ18O has provided novel insights in hydrological studies, ecological applications, understanding climate variability, and reconstructing paleoclimate. However, information ...