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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 ...
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 ...
Recovery of acetate by anion exchange with consecutive CO2-expanded methanol desorption: A model-based approach
(Elsevier BV, 2018-04-07)
Production of bio-based acetate is commonly hindered by the high costs of the downstream processing. In this
paper, a model is developed to describe a new method that recovers acetate salts using anion exchange resins,
and ...
Determinación de hidrocarburos biogénicas en aire en el Bosque Nuboso Monteverde, Costa Rica
(Universidad Nacional, Costa Rica, 2009)
Determina la concentración de los hidrocarburos biogénicos en aire en el Bosque Nuboso de la Reserva Biológica Monteverde, Costa Rica. Se implemento la metodología analítica para la determinación de las concentraciones de ...
Aplicación de los hidrogeles del ácido itanico en la liberación controlada de un plaguicida
(Universidad Nacional de Costa Rica, 2002)
Los hidrogeles poliméricos presentan características estructurales de enorme interés por su aplicación en el campo de la biomedicina y la agricultura. Los objetivos del presente estudio fueron preparar hidrogeles por ...
Determinación de éter metil terc-butílico (MTBE) en el aire de San José, Costa Rica
(Universidad Nacional, Costa Rica, 2006)
Contribuye a la calidad del aire de la ciudad de San José y al mejoramiento de la salud pública mediante la determinación de la concentración de éter metil terc-butílico en el aire de la ciudad de San José. Se realizaron ...
First measurements of methyl tert-butyl ether (MTBE) in the ambient air in San Jose, Costa Rica
(2014)
A great interest has arisen in establishing the impact of organic compounds on human health and air quality, especially those compounds emitted by automotive traffic. Knowledge of urban air pollutant concentrations is ...
Lead acid battery recycling in Costa Rica: A case study
(WIT Transactions on Ecology and the Environment, 2012)
This work describes the production of secondary lead in a smelter located in
Costa Rica. The only input of the plant is scrap automotive batteries. We
describe the environmental management strategies used for waste ...
Isotope hydrology and baseflow geochemistry in natural and human-altered watersheds in the Inland Pacific Northwest, USA
(2015-02-18)
This study presents a stable isotope hydrology and geochemical analysis in the inland Pacific Northwest (PNW) of the USA. Isotope ratios were used to estimate mean transit times (MTTs) in natural and human-altered watersheds ...
Determinación de hidrocarburos biogenéticos en aire en el bosque nuboso Monteverde, Costa Rica
(Universidad Nacional, Costa Rica, 2009)
Determina la concentración de los hidrocarburos biogénicos en aire en el Bosque Nuboso de la Reserva Biológica Monteverde, Costa Rica. Se implementó la metodología analítica para la determinación de las concentraciones de ...