Ciencias básicas
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Recent Submissions
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Aplicación del índice normalizado de precipitación para el estudio de las sequías en costa rica durante el periodo 1981-2010
(2020-01)Esta investigación trata sobre la aplicación del Índice Normalizado de Precipitación (SPI por sus siglas en inglés) como instrumento para el estudio de sequías en Costa Rica durante el periodo de 1981-2010, con el propósito ... -
External Morphology of Tagosodes orizicolus (Homoptera: Delphacidae) Revealed by Scanning Electron Microscopy
(2001)A comprehensive analysis of the ultrastructure of the delphacid rice pest Tagosodes orizicolus (Muir) was undertaken using scanning electron microscopy to resolve taxonomic problems in the distinction of females and nymphs ... -
Widespread Occurrence of Black-Orange-Black Color Pattern in Hymenoptera
(2019)Certain color patterns in insects show convergent evolution reflecting potentially important biological functions, for example, aposematism and mimicry. This phenomenon has been most frequently documented in Lepidoptera and ... -
Spectral measure of color variation of black-orange-black (BOB) pattern in small parasitoid wasps (Hymenoptera: Scelionidae), a statistical approach
(2019)Small parasitoid wasps are abundant and extremely diverse, yet their colors have not been analyzed. One of the more common color patterns observed in these wasps is a black-orange-black pattern, which is especially common ... -
Rediscovering the value of families for psychiatric genetics research
(2018-06-28)As it is likely that both common and rare genetic variation are important for complex disease risk, studies that examine the full range of the allelic frequency distribution should be utilized to dissect the genetic ... -
Diseño y simulación de un maniquí para la cuantificación del desempeño de sondas intraoperatorias gamma
(2020-05-28)La técnica de cirugía radioguiada se basa en la utilización de una sonda detectora de radiaciones para la localización y posterior extracción a través de procedimientos quirúrgicos del tejido enfermo, el cual acumula ... -
Aprovechamiento de los desechos de la industria del anodizado de aluminio en la síntesis de zeotipos tipo AlPO4-X y aplicación de estos en la captura de amoniaco
(2020)La finalidad de este trabajo fue llevar a cabo la síntesis de zeotipos tipo AlPO4-X utilizando desechos provenientes de la industria de anodizado de aluminio (DAAl-1) en sustitución de la fuente de aluminio, estos desechos ... -
Búsqueda y caracterización de proteínas biopesticidas novedosas a partir de cepas de Bacillus thuringiensis
(1999)En la actualidad se desarrollan y se cultivan comercialmente plantas transgénicas que expresan endotoxinas de Bacillus thuringiensis (Bt) como biopesticida para el control específico de insectos. Sin embargo, se teme que ... -
Connecting biology, optics and nanomechanical properties in micro-wasps
(2020)Coloration in insects provides a fruitful opportunity for interdisciplinary research involving both physics and biology, and for a better understanding of the design principles of biological structures. In this research ... -
Lithospheric structure of Pampean Flat Slab (latitude 30-33°s) and Northern Costa Rica (latitude 9-11°n) Subduction Zones
(2011)The Pampean flat slab subduction in west-central Argentina (latitude 30-33S) and the steeply dipping Northern Costa Rica subduction zone (latitude 9-11N) show significant along-trench variations in both the subducting and ... -
Phenology of an urban population of Lyssomanes jemineus Peckham & Wheeler (Araneae: Salticidae) with a list of other jumping spiders from the same Costa Rican site
(2019)Jumping spiders were sampled for 24 months in a Costa Rican urban environment and one of the species collected, Lyssomanes jemineus, was observed in detail in order to document its phenology in this disturbed habitat. ... -
Plantas del Dosel del Bosque: Guía para la identificación de géneros de plantas epífitas con flores de Costa Rica
(2020-01-31)Plantas del Dosel del Bosque es una guía botánica que ofrece información sobre las “plantas epífitas”, que son aquellas plantas que se han especializado en vivir sobre otras plantas y se han independizado de las condiciones ... -
Soybean protease inhibitors increase Bacillus thuringiensis subs. israelensis toxicity against Hypothenemus hampei
(2020)The coffee berry borer (Hypothenemus hampei Ferrari, CBB) is one of the most devastating pests on coffee plantations around the world. Although CBB is susceptible to the effect of δ–endotoxins ... -
Crustal seismicity in the Andean Precordillera of Argentina using seismic broadband data
(2020)In this study, we analyze 100 crustal Precordilleran earthquakes recorded in 2008 and 2009 by 52 broadband seismic stations from the SIEMBRA and ESP, two temporary experiments deployed in the Pampean flat slab region, ... -
Recuento de la sismicidad en Costa Rica durante el 2019
(2020)Durante el 2019, la Red Sismológica Nacional (RSN: UCR-ICE) localizó 4602 sismos. De estos, 252 eventos (~5,5%) fueron sentidos por la población, incluyendo 24 sismos relevantes con magnitudes (Mw) entre 5,0 y 6,6. La ... -
Seasonal phenology of Sargassum liebmannii J. Agardh (Fucales, Heterokontophyta) in an upwelling area of the Eastern Tropical Pacific
(2014)Seasonal changes in growth, biomass, abundance and reproduction of brown algae have been reported from subtropical and temperate regions, but there are very few reports from tropical regions, and none from the Eastern ... -
Modelado de la concentración de partículas PM10 en Costa Rica mediante el uso del modelo WRF-Chem
(2020-03-18)RESUMEN En el presente trabajo de investigación se analizan, por primera vez en el país, los niveles de concentración de PM10, utilizando simulaciones numéricas realizadas con el modelo WRF (Weather Research and ... -
Aridity Trends in Central America: A Spatial Correlation Analysis
(2020-04-23)Trend analyses are common in several types of climate change studies. In many cases, finding evidence that the trends are different from zero in hydroclimate variables is of particular interest. However, when estimating ... -
Contact calling in context: intra- and intergroup variation in vocalization rates depend on a call’s function
(2020)To maintain group cohesion while coordinating group movements, individuals might use signals to advertise the location of a route, their intention to initiate movements, or their position at a given time. In highly mobile ...
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