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  • Unusual Microbial Xylanases from Insect Guts 

    Brennan, YaLi; Callen, Walter N.; Christoffersen, Leif; Dupree, Paul; Goubet, Florence; Healey, Shaun; Hernández Alfaro, Myriam; Keller, Martin; Li, Ke; Palackal, Nisha; Sittenfeld Appel, Ana; Tamayo Castillo, Giselle; Wells, Steve; Hazlewood, Geoffrey P.; Mathur, Eric J.; Short, Jay M.; Robertson, Dan E.; Steer, Brian A. (2004-06-07)
    Recombinant DNA technologies enable the direct isolation and expression of novel genes from biotopes containing complex consortia of uncultured microorganisms. In this study, genomic libraries were constructed from microbial ...
  • Central America [in State of the Climate in 2011] 

    Amador Astúa, Jorge Alberto; Hidalgo León, Hugo G.; Alfaro Martínez, Eric J.; Calderón Solera, Blanca (2012-07)
    Large-scale climate patterns influenced temperature and weather patterns around the globe in 2011. In particu- lar, a moderate-to-strong La Niña at the beginning of the year dissipated during boreal spring but reemerged ...
  • Variación temporal ecológica de playas de arena según diferente nivel de conservación en la zona del Parque Nacional Manuel Antonio, Costa Rica 

    Sibaja Cordero, Jeffrey Alejandro; Antillón Obando, Beatriz; Soto Venegas, Kevin; Wohlhaupter, Vanessa; Hidalgo Sánchez, Randall; Goebel Otarola, Nathalie; Riegel, Vanessa (2022-12-06)
    Este documento es el informe de investigación para ACOPAC de SINAC correspondiente al muestreo ecológico de 4 playas de arena durante el año 2021. Se muestra como la playa Espadilla Norte ubicada afuera del Parque Nacional ...
  • Central America [in State of the Climate in 2012] 

    Amador Astúa, Jorge Alberto; Alfaro Martínez, Eric J.; Calderón Solera, Blanca; Durán Quesada, Ana María; Hidalgo León, Hugo G.; Rivera, Ingrid (2013-08)
    For this region, nine stations from five countries were analyzed. The stations located on the Caribbean slope are: Phillip Goldson International Airport, Belize; Puerto Barrios, Guatemala; Puerto Lempira, ...
  • Central America [in State of the Climate in 2013] 

    Amador Astúa, Jorge Alberto; Alfaro Martínez, Eric J.; Hidalgo León, Hugo G.; Durán Quesada, Ana María; Calderón Solera, Blanca; Rivera, Ingrid; Vega, Carla (2014-07)
    In 2013, the vast majority of the monitored climate variables reported here maintained trends established in recent decades. ENSO was in a neutral state during the entire year, remaining mostly on the cool side of ...
  • Central America [in State of the Climate in 2014] 

    Amador Astúa, Jorge Alberto; Hidalgo León, Hugo G.; Alfaro Martínez, Eric J.; Durán Quesada, Ana María; Calderón Solera, Blanca; Vega, Carla (2015-07)
    Most of the dozens of essential climate variables monitored each year in this report continued to follow their long-term trends in 2014, with several setting new records. Carbon dioxide, methane, and nitrous oxide the ...
  • Propuesta de Manual de Procedimientos de Gestión de Riesgos para Giras de Campo de la Escuela Centroamericana de Geología 

    Tenorio Ríos, Susana (2020-12-06)
    La Escuela Centroamericana de Geología (ECG) de la Universidad de Costa Rica (UCR) realiza numerosas giras de campo de forma constante a lo largo de los 5 años de la carrera de Bachillerato y Licenciatura en Geología. A ...
  • Phenolic variation among Chamaecrista nictitans subspecies and varieties revealed through UPLC-ESI(-)-MS/MS chemical fingerprinting 

    Quirós Guerrero, Luis Manuel; Albertazzi Castro, Federico José; Araya Valverde, Emanuel; Romero Chacón, Rosaura María; Villalobos Barrantes, Heidy M.; Poveda Álvarez, Luis Jorge; Chavarría Vargas, Max; Tamayo Castillo, Giselle (2019-01-19)
    Introduction Comparative analysis of metabolic features of plants has a high potential for determination of quality control of active ingredients, ecological or chemotaxonomic purposes. Specifically, the development of ...
  • Magmatic and Tectonic Domains of Central Costa Rica and the Irazú-Turrialba Volcanic Complex Revealed by Ambient Noise Tomography 

    Jiwani Brown, Elliot Amir; Planès, Thomas; Pacheco Alvarado, Javier Francisco ; Mora Fernández, Mauricio; Lupi, Matteo  (2022-11)
    The Central America Volcanic Arc runs from Guatemala to Panama, locally interrupted in Costa Rica after the twin-system Irazú-Turrialba Volcanic Complex, at the onset of the Talamanca Cordillera. A marked geological ...
  • Biodiversity Prospecting: The INBio Experience 

    Tamayo Castillo, Giselle; Guevara Fernández, Ana Lorena; Gámez Lobo, Rodrigo (2004)
    Bioprospecting is defined as the systematic search for genes, compounds, designs, and organisms that might have a potential economic use and might lead to a product development. In 1991, Costa Rica's National Institute of ...
  • Taxonomic and Functional Diversity of Aquatic Macroinvertebrate Assemblages and Water Quality in Rivers of the Dry Tropics of Costa Rica 

    Kohlmann, Bert; Vásquez, Danny; Arroyo, Alejandra; Springer Springer, Monika (2021-08)
    One of Costa Rica’s driest areas is the province of Guanacaste, in the Pacific Northwest, with almost no rain during the dry season from November to April. Due to this marked seasonality, the area is covered by dry tropical ...
  • First description of the larva of Psaironeura, based on specimens of P. anegloi from Costa Rica (Odonata: Coenagrionidae: Protoneurinae), with a key to the genera of Central American Protoneurinae. 

    Román Heracleo, Jareth; Novelo Gutiérrez, Rodolfo; Springer Springer, Monika (2020)
    The larva of Psaironeura is formally described for the first time, based upon reared specimens of Psaironeura angeloi from the Tirimbina Biological Reserve, Sarapiquí, Heredia Province, Costa Rica. Detailed illustrations ...
  • Variación estacional y características fisicoquímicas e hidrológicas que influyen en los macroinvertebrados acuáticos, en un río tropical 

    Quesada Alvarado, Francisco; Umaña Villalobos, Gerardo; Springer Springer, Monika; Picado Barboza, Jorge Enrique (2020)
    Introducción: La distribución de los macroinver tebrados acuáticos en los ríos puede estar determinada por el tipo del sustrato, la forma del canal del río, el régimen hidrológico y las interacciones con factores ...
  • Primer registro del género Interocoris (Heteroptera: Naucoridae) en Centroamérica y observaciones sobre Interocoris mexicanus. 

    Herrera, Federico; Solano Ulate, Darha; Springer Springer, Monika (2020)
    Introducción: La familia Naucoridae, de distribu ción mundial, se encuentra dividida en cinco subfamilias, de las cuales cuatro de ellas y seis géneros han sido reporta dos hasta la fecha en Centroamérica. El género ...
  • Bioprospecting 

    Mateo, Nicolás; Nader, Werner; Tamayo Castillo, Giselle (2001)
    Bioprospecting is the systematic search for genes, natural compounds designs and whole organisms in wild life with a potential for product development by biological observation and biophsical, biochemical, and genetic ...
  • Separation of crude plant extracts with high speed CCC for primary screening in drug discovery 

    Harris, Guy H.; Armbruster, Jean A.; Borris, Robert P.; Jiménez Madrigal, Quírico; Zamora, Nelson A.; Tamayo Castillo, Giselle (2001)
    High speed countercurrent chromatography (HSCCC) was used in a pre-fractionation pilot study to improve the quality of crude plant samples for primary screening in drug discovery efforts. The methanol ...
  • Alkaloid contents in members of Lycopodiales 

    Tamayo Castillo, Giselle; Romero Chacón, Rosaura María; Rosales Ovares, Kattia; Jiménez, Allan; Jiménez Somarribas, Alberto; Montenegro, Héctor; Rodríguez Arrieta, Jesús Alexander; Vargas, Luis Diego (2001)
    The composition of alkaloids in fifteen species that belong to the Lycopodiales, which grow wild in Costa Rica were analysed by gas chromatography coupled with mass spectrometry. Several alkaloids were identified, ...
  • Empleo de técnicas y materiales biológicos en la búsqueda de productos activos contra la malaria 

    Chinchilla Carmona, Misael; Guerrero Bermúdez, Olga Marta; Tamayo Castillo, Giselle; Sittenfeld Appel, Ana (2001)
    Se describen los métodos empleados en el estudio del efecto de extractos de insectos preparados en el Instituto Nacional de Biodiversidad de Costa Rica, sobre un tipo de malaria murina producida por el Plasmodium bergheim. ...
  • Germacranolides from Mikania guaco 

    Rüngeler, Peter; Brecht, Volker; Tamayo Castillo, Giselle; Merfort, Irmgard (2001-03)
    Fourteen novel sesquiterpene lactones of the germacranolide type have been isolated from the aerial parts of Mikania guaco: six costunolide, two melampolide and six germacra-4-trans,10(14),11(13)-trien-12,6α-olide derivatives. ...
  • β-Carboline monoterpenoid glucosides from Palicourea adusta 

    Valverde, Johnny; Tamayo Castillo, Giselle; Hesse, Manfred (1999)
    Lyaloside, a monoterpenoid glucoindole alkaloid, was isolated from the leaves of Palicourea adusta together with a mixture of its hydroxycinnamic acid derivatives, (E)-O-(6′)-cinnamoyl-4″-hydroxy-3″-methoxy-lyaloside and ...

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