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Repelencia de tres extractos naturales en el combate de mosca blanca Bemista tabaci (Hemiptera: Aleyrodidae) en el cultivo del melón en la zona de Trinidad Vieja de Salinas, Puntarenas, Costa Rica
(Universidad Nacional (Costa Rica). Escuela de Ciencias Agrarias, 2017)
Con el objetivo de evaluar el efecto de repelencia de tres extractos naturales de plantas
de fácil acceso: tomillo, chile picante/ajo y canela/clavo de olor, para combatir la mosca
blanca en el cultivo de melón, se evaluó ...
Carbon accumulation in the biomass and soil of different aged secondary forests in the humid tropics of Costa Rica
(Elsevier, 2011-10-15)
Efforts are needed in order to increase confidence for carbon accounts in the land use sector, especially in
tropical forest ecosystems that often need to turn to default values given the lack of precise and reliable
site ...
Carbon accumulation in aboveground and belowground biomass and soil of different age native forest plantations in the humid tropical lowlands of Costa Rica
(Universidad Nacional, Costa Rica, 2012)
Generic or default values to account for biomass and carbon accumulation in tropical forest ecosystems are generally recognized as a major source of errors, making site and species specific data the best way to achieve ...
Concentration of PM10 in the Metropolitan Area of Costa Rica, Central America: chemical composition and potential sources
(Universidad Nacional, Costa Rica, 2010)
Measurements of metals and inorganic ions were carried out on PM10. Sampling was made in five sites distributed in San José, Heredia and Belén cities. Samples were collected using Thermo Andersen PM10 high volume samplers ...
Determination of carbonyls and their sources in three sites of the metropolitan area of Costa Rica, Central America
(Springer Science+Business Media B.V, 2011-03-02)
Ambient levels of carbonyl compounds
and their possible sources were studied at three
places in the metropolitan area of Costa Rica,
including a residential, an industrial, and a com mercial downtown area with high ...
Cuatro compuestos nuevos del extracto no polar de la planta Amyris brenesii (Rutaceae) de Costa Rica
(Universidad de Costa Rica., 2008)
El estudio fitoquímico de las partes aéreas de Amyris brenesii (Rutaceae) recolectadas en Río Cuarto, Grecia, Alajuela (Costa Rica) mostró la presencia de cuatro nuevos compuestos: la 6-hidroxi-6-O-(3-hidroximetil-3-metilalil)- ...
Clinical observations and safety profile of oral herbal products, souroubea and platanus spp: a pilot-toxicology study in dogs
(Universidad Nacional, Costa Rica, 2014-04-07)
This pilot-study evaluated the toxicity and safety profi le of two herbal products Souroubea spp Botanical Blend (SSBB) and Platanus Tree Bark (PTB) after oral administration to dogs at elevated doses for 28 days. SSBB and ...
Parasites of cetaceans stranded on the Pacific coast of Costa Rica
(Revista de parasitología veterinaria, 2011-05-12)
Information regarding parasitic fauna of cetaceans from Costa Rica is provided for the first
time. A total of 25 stranded dolphins and whales were examined between 2001 and 2009,
including striped dolphin (Stenella ...
Una nueva especie de Eugenia L. (Myrtaceae) de las selvas húmedas costarricenses
(Universidad de Costa Rica., 2004)
Se describe una nueva especie de Eugenia (Myrtaceae) de las veinte caribe de Costa Rica. Se distingue por las hojas con doble nervio marginal y los frutos acostillados y muy reticulado.
A regression analysis of Q'eqchi' Maya medicinal plants from southern Belize
(Universidad Nacional, Costa Rica, 2006)
Amiguet, V.T., Department of Biology, University of Ottawa, P.O. Box 450, Ottawa, Ont. K1N 6N5, Canada; Arnason, J.T., Department of Biology, University of Ottawa, P.O. Box 450, Ottawa, Ont. K1N 6N5, Canada; Maquin, P., ...