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    Insight into the stable isotopic composition of glacial lakes in a tropical alpine ecosystem: Chirripó, Costa Rica 

    Esquivel-Hernández, Germain; Sanchez-Murillo, Ricardo; Quesada-Román, Adolfo; Mosquera, Giovanny; Birkel, Christian; Ball, Jan (Wiley & Sons, 2018)
    Tropical high‐elevation lakes are considered sentinels of global climate change. This work characterizes the hydrological conditions of tropical alpine glacial lakes located in the highlands of Chirripó, Costa Rica, using ...
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    Preface to Stable isotopes in hydrological studies in the tropics: ecohydrological perspectives in a changing climate 

    Sanchez-Murillo, Ricardo; Durán-Quesada, Ana María (Wiley & Sons, 2019)
    Tropical regions (comprised between the Tropics of Cancer and Capricorn, 23.5°N to 23.5°S) cover approximately 36% of the Earth's landmass. They are home to 40% of the world's population, which is projected to increase ...
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    Tracking the water fingerprints of Cocos Island: A stable isotope analysis of precipitation, surface water, and groundwater 

    Corrales, José L; Sánchez Murillo, Ricardo; Esquivel-Hernandez, Germain; Herrera Herrera, Esteban; Boll, Jan (Revista de Biología Tropical, 2016)
    The use of stable isotopes of water, both δ2H and δ18O has provided novel insights in hydrological studies, ecological applications, understanding climate variability, and reconstructing paleoclimate. However, information ...
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    On the comparison between diafiltration and isothermal titration calorimetry: Determination of the amount of analytes bound to watersoluble polymers 

    Orozco, Felipe; Redondo-Gómez, Carlos; Jose-Roberto, Vega-Baudrit; Moreno-Villoslada, Ignacio (Elsevier Ltd, 2019)
    Aqueous systems composed of low molecular-weight species (LMWS) and water-soluble polymers (WSP) present important technological applications. Therefore, continuous advances on characterization techniques are crucial to ...
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    Moisture transport and seasonal variations in the stable isotopic composition of rainfall in Central American and Andean Páramo during El Niño conditions (2015–2016) 

    Esquivel-Hernández, Germain; Mosquera, Giovanny; Sanchez-Murillo, Ricardo; Quesada Román, Adolfo; Birkel, Christian; Crespo, Patricio; Célleri, Rolando; Windhorst, David; Breuer, Lutz; Boll, Jan (John Wiley and Sons Ltd, 2019)
    High‐elevation tropical grassland systems, called Páramo, provide essential ecosystem services such as water storage and supply for surrounding and lowland areas. Páramo systems are threatened by climate and land use ...
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    Potent CYP3A4 Inhibitors Derived from Dillapiol and Sesamol 

    Carballo Arce, Ana Francis; Raina, Vikrant; Liu, Suqi; Liu, Rui; Jackiewicz, Victoria; Carranza, David; Arnason, John; Durst, Tony (American Chemical Society 4, 6, 10915–10920 2019, 2019)
    Synthesis of 50 analogues of the natural insecticide synergists, dillapiol and sesamol, is reported. These were evaluated as potential insecticide synergists based on their inhibition of human CYP3A4. The most potent ...
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    Drug Solubility Enhancement through the Preparation of Multicomponent Organic Materials: Eutectics of Lovastatin with Carboxylic Acids 

    Araya Sibaja, Andrea Mariela; Jose-Roberto, Vega-Baudrit; Guillen-Girón, Teodolito; Navarro-Hoyos, Mirtha; Cuffini, Silvia Lucia (MDPI AG, 2019-03)
    Lovastatin (LOV) is a drug used to treat hypercholesterolemia. Recent studies have identified its antioxidant effects and potential use in the treatment of some types of cancer. However, the low bioavailability related ...
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    Estudio bioprospectivo, actividad antibiótica y antioxidante del exocarpio del fruto de santol (Sandoricum koetjape) 

    Mesén Mora, Luis Diego; Carvajal-Miranda, Yendry; Álvarez Valverde, Víctor; Rodríguez Rodríguez, Gerardo (Universidad Nacional de Costa Rica, 2019-01-31)
    Con el fin de evaluar las principales propiedades antioxidantes y antibióticas del exocarpio del fruto de Santol (Sandoricum koetjape), se realizó una bioprospección sobre este, así como una ...
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    Hydrogeological responses in tropical mountainous springs 

    Salas-Navarro, Jessica; Sanchez-Murillo, Ricardo; Esquivel-Hernández, Germain; Corrales Salazar, José Leonardo (Taylor and Francis Ltd., 2019)
    This study presents a hydrogeochemical analysis of spring responses (2013–2017) in the tropical mountainous region of the Central Valley of Costa Rica. The isotopic distribution of δ18O and δ2 H in rainfall resulted ...
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    Emerging contaminants in trans-american waters 

    Pinos Velez, Veronica; Esquivel-Hernández, Germain; Cipriani-Avila, Eva Isabel; Mora-Abril, Enmita; Cisneros, Juan; Alvarado, Andrés; Abril-Ulloa, Victoria (Institute for Environmental Research in Hydrographic Basins (IPABHi), 2019)
    BSTRACT Industrial development has made new products available to people to make their lives easier. Items such as food, cleaning, personal care and health products, among others, are processed, sold and consumed daily ...
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    AuthorEsquivel Hernández, Germain (4)Boll, Jan (3)||| (3)Alfaro Solís, Rosa (2)Araya Sibaja, Andrea Mariela (2)Ball, Jan (2)Birkel, Christian (2)Boll, J. (2)Camacho, Diego (2)Corrales Salazar, José Leonardo (2)... View MoreSubjectISOTOPOS (11)COSTA RICA (10)ISOTOPES (6)PRECIPITACIÓN (6)AGUAS SUBTERRÁNEAS (5)HIDROLOGÍA (5)GROUND WATERS (3)LLUVIA (3)PRECIPITATION (3)TROPICAL SPECIES (3)... View MoreDate Issued2019 (19)2018 (8)2013 (7)2015 (5)2016 (4)2011 (3)2014 (3)2010 (1)2012 (1)2017 (1)Has File(s)Yes (52)

    Repositorio Académico Institucional de la Universidad Nacional de Costa Rica. Creado con DSpace software copyright © 2002-2015  DuraSpace. Tema basado en Mirage2 de ATMIRE..
    Sitio Web UNA | Portal de Revistas Académicas | Aviso Legal | Contact Us | Send Feedback
    Repositorio Institucional - UNA