Investigación
Subcomunidades en esta comunidad
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Artes y letras [336]
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Ciencias básicas [972]
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Ciencias sociales [2960]
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Ingeniería [1005]
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Salud [2028]
Envíos recientes
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El ensayo inmunosorbente enzima conjugada (ELISA) en el diagnóstico de rotavirus
(1977)La creciente importancia que los rotavirus tienen en: las llamadas diarreas inespecíficas (3,6) ha llevado al desarrollo de diversas técnicas de laboratorio para estudiar el papel de esos vírus en la etiología de la diarrea. ... -
Interseeding cool-season forages into corn to increase yield and quality of residue grazed in the fall
(2015-07-23)Six forage species/mixtures were interseeded into irrigated grain corn to evaluate their yield and nutritional quality as a means of improving diets for beef cattle grazing cornstalks during the fall. Species evaluated ... -
Evaluation of brassicas for fall forage
(2013-12-11)Various species and varieties of brassicas were evaluated for their potential to extend the grazing season and provide forage through late-fall and early winter in Colorado. The species and varieties evaluated included: ... -
Cuantificación espectrofotométrica del cloruro en suero mediante reacción con tiocianato de mercurio
(1995)El anión que se encuentra en mayor concentración en el fluido extracelular es el ion cloruro (i) (2), por lo que juega un papel importante en regular la distribución del agua, la presión osmótica y el balance aniónico-catiónico ... -
Two new species of Kapateira Young from Costa Rica (Auchenorrhyncha: Cicadellidae: Cicadellinae)
(2006-08)The genus Kapateira was described by Young (1977), who included one species from Colombia but noted that the genus also occurs in Panama, Venezuela, Eucador, and Bolivia. In this paper two new species are decribed, K. ... -
Blogs
(2018)The Web has been with us now for almost 25 years. An integral part of our social, cultural and political lives, ‘new media’ is simply not that new anymore. Despite the rapidly expanding archives of information at our ... -
Diseño e implementación de un sistema de gestión de aprendizaje institucional para la Nube. Una plataforma capaz de adaptarse dinámicamente según la demanda
(2016-08-16)Los sistemas de gestión de aprendizaje convencionales (LMS por sus siglas en inglés) han sido desarrollados siguiendo los modelos de arquitectura tradicional en infraestructura tecnológica, donde la asignación de ... -
Two new species of Graphocephala Van Duzee from Costa Rica (Cicadellidae: Cicadellinae)
(2006-08)The genus Grahocephala, which was described by Van Duzee (1916), is a large complex group distributed from southern Canada to Colombia, Venezuela, and French Guiana. Young (1977) revised the genus and described twelve new ... -
Collateral effects of microplastic pollution on aquatic microorganisms: An ecological perspective
(2018-12-05)Microplastics (MP) provide a unique and extensive surface for microbial colonization in aquatic ecosystems. The formation of microorganism-microplastic complexes, such as biofilms, maximizes the degradation of organic ... -
Biogeographical assessment of myxomycete assemblages from Neotropical and Asian Palaeotropical forests
(2017-03-16)Aim Lowland/highland and Neotropical/Asian Palaeotropical assemblages of myxomycetes were compared to test the null hypothesis that neither species diversity nor species composition differs between the two ecoregions. ... -
Repercusiones costarricenses del golpe de Estado de 1973 en Chile
(2015)El propósito principal de este artículo es analizar las repercusiones que tuvo en Costa Rica el golpe de Estado ocurrido en Chile el 11 de septiembre de 1973. Para cumplir con tal objetivo, se considera la forma en que los ... -
Determinación del Dímero D en pacientes con anticoagulante lúpico
(1997)La determinación del dímero D es de gran utilidad para establecer el diagnóstico de trombosis venosa profunda; sin embargo, en los pacientes que presentan anticoagulante lúpico su hallazgo e importancia todavía no ha sido ... -
Blaming it on the Weather: The Role of “Inclement” Rainfall in Society- Nature Relations in Liberal Costa Rica (1860-1940)
(2011)This article seeks to shed light on some of the many possible interactions between changes in rainfall regime, one of the climatic factors with the greatest bearing on the history of human society, and the economic and ... -
A geographical sampling strategy for field surveys in an urban area using high-resolution satellite imagery
(2006-11)Field evaluations for studying the epidemiology of vector-borne diseases like dengue in urban areas are often restricted to selection of households and buildings for field surveys. Therefore, the resulting sampling frame ... -
Evaluation of predictive maps for Aedes aegypti larval habitats in two urban areas of Costa Rica
(2011-12)The abundance of Aedes aegypti can be associated with urban structure and tree cover, which conceals and protects containers. The purpose of this study was to create and evaluate predictive maps for Ae. Aegypti larval ... -
Epidemiological characterization of incident cases of Rickettsia infection in rural areas of Urabá region, Colombia
(2018-10-31)Introduction Most of the studies related to rickettsial infection in Colombia are cross-sectional because of the challenge in conducting prospective studies on infectious disease that may have a difficult diagnosis. Although ... -
Los modelos de mezcla de la Teoría de Respuesta al Ítem
(2015-11-13)Se presentan los modelos de mezcla de la Teoría de respuesta al ítem y cómo estos pueden ser utilizados para identificar subagrupaciones no observadas de examinados denominadas como clases latentes. Asimismo se ejemplifica ... -
Comportamiento informacional en el depósito espontáneo de documentos en el repositorio Kérwá de la Universidad de Costa Rica
(2018-10-11)Polanco-Cortés, J. (2018). Comportamiento informacional en el depósito espontáneo de documentos en el repositorio Kérwá de la Universidad de Costa Rica (Trabajo Final de Graduación presentado para optar por el grado de ... -
Composition, Chemical Fingerprinting and Antimicrobial Assessment of Costa Rican Cultivated Guavas (Psidium friedrichsthalianum (O. Berg) Nied. and Psidium guajava L.) Essential Oils from Leaves and Fruits
(2016-07-28)The essential oil of two related tree species, P. friedrichsthalianum and P. guajava, where obtained. A total of six different oil samples were recovered including leaves in dry/rainy season and fruits of both plant species. ... -
Potentially inadequate medications in elderly people of los Guidos-Costa Rica, 2018
(2018)Elderly people due to their physical and mental conditions, receive medications with the intention of improving their quality of life but it is not always right. Methodology: the objective of this observational and descriptive ...
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