Repositorio Académico Institucional de la Universidad Nacional: Recent submissions
Now showing items 1-20 of 9151
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El mercado de medicamentos en Costa Rica: una visión comparativa con El Salvador
(Universidad Nacional, Costa Rica, 2022-05)La presente investigación realiza un análisis comparativo del mercado de medicamentos y sus resultados en precios para Costa Rica y El Salvador a partir de una muestra de medicamentos para los padecimientos más comunes ... -
Digenetic trematode community in nesting green sea turtles (Chelonia mydas) from Tortuguero National Park, Costa Rica
(American Society of Parasitologists, 2006-12-01)The digenetic community of 40 green sea turtles (Chelonia mydas) was investigated at Tortuguero National Park, Costa Rica. In total, 24,270 trematodes belonging to 29 species and 6 families including Clinostomidae 1, ... -
Crioconservación de semillas de Teca (Tectona grandis).
(Universidad Nacional, Costa Rica., 2013-06)La teca (Tectona grandis L.f) es un árbol tropical con gran demanda por la alta calidad de su madera y rápido crecimiento. Los programas de mejoramiento genético para esta especie han dado como resultado semillas ... -
Detection of Rickettsia monacensis and Rickettsia amblyommatis in ticks collected from dogs in Costa Rica and Nicaragua
(Elsevier B.V, 2018-08-04)The neotropical climate of Central America provides ideal conditions for ticks, which may transmit several human pathogens, including spotted-fever group Rickettsia. Dogs may act as sentinels or reservoirs for human tick-borne ... -
Detection of proteins antigenically related to Bothrops asper myotoxin in crotaline snake venoms
(Pergamon Press, 1987-03-05)H. Loxtoxre, E, Moatnvo and J . M. GurtEsaez . Detation of proteins antigenically rdated to Bothrops riper myotoxin in crotaline snake venoms. Tadcon 25, 947 -953, 1987 . - The presence of componrnts antigenically related ... -
Density dependence, landscape, and weather impacts on aquatic Aedes japonicus japonicus (Diptera: Culicidae) abundance along an urban altitudinal Gradient
(Oxford University Press on behalf of Entomological Society of America, 2017-09-20)The Asian Bush Mosquito, Aedes (Finlaya) japonicus japonicus (Theobald) is an important globally invasive mosquito species. In comparison with other major invasive mosquitoes, relatively little is known about Ae. j. ... -
Density dependence in a seasonal time series of the bamboo mosquito, Tripteroides bambusa (Diptera: Culicidae)
(Entomological Society of Canada, 2017)The bamboo mosquito, Tripteroides bambusa (Yamada) (Diptera: Culicidae), is a mosquito species ubiquitous across forested landscapes in Japan. During 2014 we sampled adult mosquitoes from May to November using a sweep ... -
Determinants of Health in Seasonal Migrants: Coffee Harvesters in Los Santos, Costa Rica
(Taylor & Francis, 2013-07-19)In the agroexport zone of Los Santos Zone in Costa Rica, coffee is harvested by migrant labor. Most migrants are from Panama and Nicaragua. We describe migrants' housing- and service-related health determinants, with ... -
Representaciones sociales de feminidad asociadas a la maternidad en mujeres entre los 30 a 48 años, que se aplicaron la fertilización in vitro: a partir de ellas y sus familias. Costa Rica. En el periodo de prohibición de la FIV del año 2001 al 2016
(Universidad Nacional, Costa Rica, 2022)En esta investigación, inicialmente se procede a indicar la población de estudio y desde que perspectiva metodológica fue abordado el tema-problema, sus procedimientos, técnicas y métodos para la recolección de la ... -
Public 2308W annotation
(Universidad Nacional, Costa Rica, 2016-09-29)This is an editable version of B. abortus 2308W. The aim of this document is to provide a simple mechanism for updates in genes annotation. -
Uso alternativo de residuos de caña de azúcar obtención de espumas rígidas de poliuretano
(Universidad Nacional (Costa Rica), 2004)En este trabajo se realizó un estudio para comprobar la efectiva sustitución parcial de los reactivos de uso común en la elaboración de espumas rígidas de poliuretano, por materiales lignocelulósicos provenientes de la ... -
Dieta del "pargo colorado" Letjanus colorado (Pisces: Lutjanidae) en el Golfo de Nicoya, Costa Rica
(Universidad de Costa Rica, 1997)A total of 308 "Red Snapper" Lutjanus colorado were collected monthly in the Gulf of Nicoya, Costa Rica, from January 1993 to January 1994 to determine feeding habits. The fishes (16-56 cm in total length) were polychaete ... -
Parasitoidismo por dípteros en larvas de Caligo atreus (Lepidoptera: Nymphalidae) en Cartago, Costa Rica
(Universidad de Costa Rica, 2004)Dipteran parasitoidism on larvae of Caligo atreus (Lepidoptera: Nymphalidae) in Cartago, Costa Rica. Parasitoids on larvae of Caligo atreus were studied at the Estación de Biología Tropical in Río Macho, Cartago, Costa ... -
Distribución y densidad de dos especies de holoturoideos en la isla de Cubagua, Venezuela
(Universidad de Costa Rica, 2011)Distribution and density of two holothurian species in Cubagua Island, Venezuela. Holothurian populations in the Caribbean have been significantly depleted in some areas, and others are still in danger to satisfy international ... -
Deferred bulls: are cycles per conception and pregnancy rate determined by the type of spermiogramme deviation under natural mating?
(Elsevier, 2016)Deferred bulls undergo clinical deviations that could be transitory or have an uncertain potential fertility output. Data in Costa Rica showed no significant differences in conception rate (CR) between sound vs. deferred ... -
Dung beetle and terrestrial mammal diversity in forests, indigenous agroforestry systems and plantain monocultures in Talamanca, Costa Rica
(Universidad Nacional, Costa Rica., 2006)In order to explore the importance of indigenous agroforestry systems for biodiversity conservation, we compared the abundance, species richness and diversity of dung beetles and terrestrial mammals across a gradient of ... -
DRUG USE AND ASSOCIATED FACTORS AMONG RURAL ADOLESCENTS IN COSTA RICA
(Universidad Nacional, Costa Rica., 2002)The objectives of this study, carried out in 1995, were to assess both licit and illicit substance use among rural male and female Costa Rican adolescents, and associated health, psy chological, and psychosocial problems. ... -
DISTRIBUTION, DIET, AND VOCALIZATIONS OF THE ENDANGERED COLOMBIAN TOAD OSORNOPHRYNE PERCRASSA (ANURA, BUFONIDAE)
(Universidad Nacional, Costa Rica., 2015)Herein, we describe the distribution, call, diet, and niche model of Osornophryne percrassa. This species has been recorded at 23 locations of Colombia, 14 of which are reported in this work. In addition, we reported the ... -
Cutaneous Leishmaniasis in dogs: Is high seroprevalence indicative of a reservoir role?
(Cambridge University Press, 2015-05-20)American cutaneous leishmaniasis (ACL) is a complex disease with a rich diversity of animal host species. This diversity imposes a challenge, since understanding ACL transmission requires the adequate identification of ... -
Informality, social citizenship, and wellbeing among migrant workers in Costa Rica in the context of COVID-19
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-05-20)Costa Rica is home to 557,000 migrants, whose disproportionate exposure to precarious, dangerous, and informal work has resulted in persistent inequities in health and wellbeing in the midst of the COVID-19 pandemic. We ...
