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Mostrando ítems 1161-1170 de 1605
Crustacean fauna (Stomatopoda: Decapoda) associated with the deepwater fishery of Heterocarpus vicarius (Decapoda: Pandalidae) along the Pacific coast of Costa Rica
(2007)
Commercial bottom trawling is a successful and commonly used method to catch marine shrimps. However, the shrimp fishing gears are poorly selective, and in addition to the target species they catch and retain large quantities ...
Una nueva ruta para la sintesis de la feromona sexual de la polilla de la papa, Scrobipalpopsis solanivora
(1996)
Acetato de (E)-3-dodecenilo, principal componente de feromona de Scrobipal-popsis solanivora, se preparó con un rendimiento total del 61 %. El precursor, 3-dodecin-1-ol, se preparó en el paso de un recipiente mediante la ...
Características de la atmósfera libre sobre Paraguay y su influencia en el comportamiento estacional de la precipitación.
(Revista Geofísica, n. 42, enero-junio, 1995, 1995-01)
Se presentan las pricipales características de la atmósfera libre sobre Paraguay con base aproximadamente siete años, de diciembre de 1986 a noviembre de 1993. Se analiza el comportamiento medio mensual de la temperatura, ...
Isolation of Fungi and Bacteria Associated with the Guts of Tropical Wood-Feeding Coleoptera and Determination of Their Lignocellulolytic Activities
(2015-08)
The guts of beetle larvae constitute a complex system where relationships among fungi, bacteria, and the insect host occur. In this study, we collected larvae of five families of wood-feeding Coleoptera in tropical forests ...
Establishment of cell suspension cultures of two Costa Rican Jatropha species (Euphorbiaceae).
Establecimiento de suspensiones celulares de dos especies Jatropha (Euphorbiaceae) de Costa Rica
(2013-09-01)
J. curcas has been studied in different countries and some interesting agronomic, pharmacological and industrial properties have been reported. More recently, it has been considered an important alternative source for ...
Aggregation Pheromone of the African Rhinoceros Beetle, Oryctes monoceros (Olivier) (Coleoptera: Scarabaeidae)
(1994)
Coleoptera, Oryctes monoceros, African Rhinoceros Beetle, Aggregation Pheromone, Ethyl 4-M ethyloctanoate Ethyl 4-m ethyloctanoate is a male-produced aggregation pheromone of the African rhinoceros beetle, Oryctes monoceros ...
Nota sobre la Preparación de un Dicatión Cuaternario de Azufre Divalente
(1979)
A synthesis has been developed for the previously unreported salts of S,S-di-(1-methylbenzimidazol-2-yl)-S,S-dimethylsulfonium dication [3] derived from the sulfide [2] and dimethyl-sulfate.
Synthesis and Determination of Antibacterial Activity of Jacaranone and Synthetic Analogs
(2017)
Natural product jacaranone, 1, and five more analog derivatives were synthesized and its antibacterial activity against
Gram-positive and Gram-negative microorganisms was tested. One of these derivatives, 5, ...
Surviving in cities: the case of a year-round territorial bird in the Neotropics
(2022-03-18)
Urban expansion has been identified as one of the main threats to biodiversity because it can negatively affect wildlife populations. However, wildlife population dynamics have not been studied in one of the most rapidly ...