Browsing Ciencias básicas by Title
Now showing items 1526-1545 of 3121
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Human-Induced Changes in the Hydrology of the Western United States
(2008-02-22)Observations have shown that the hydrological cycle of the western United States changed significantly over the last half of the 20th century. We present a regional, multivariable climate change detection and attribution ... -
Humedales del Parque Nacional Chirripó, Costa Rica: características, relaciones geomorfológicas y escenarios de cambio climático
(2018-12)The geomorphological, climatological and hydrological characteristics of the high Andean wetlands of the Chirripó National Park (PNCh) are analyzed. The PNCh is located in south-central Costa Rica, Central America. This ... -
Hundreds of nuclear and plastid loci yield novel insights into orchid relationships
(2021)PREMISE: The inference of evolutionary relationships in the species- rich family Orchidaceae has hitherto relied heavily on plastid DNA sequences and limited taxon sampling. Previous studies have provided a robust plastid ... -
(Hydro)climatological studies of climate change and variability in Central America
(2018-06-26)This is the presentation of Hugo Hidalgo at the CORDEX Central America and South America Training Workshop on Downscaling Techniques, in La Paz, Bolivia, June 25 to 27, 2018. -
Hydro-Climatic Variability and Change in Central America. Supporting Risk Reduction Through Improved Analyses and Data
(2017)Floods and droughts are frequent in Central America and cause large social, economic and environmental impacts. A crucial step in disaster risk reduction is to have a good understanding of the causing mechanisms of extreme ... -
Hydrogen production by immobilized Synechocystis sp. PCC 6803
(2016)The ability of the immobilized Synechocystis sp. PCC 6803 cells to produce hydrogen via an indirect light driven process was investigated. Cells were successfully immobilized in a calcium alginate gel matrix. Beads were ... -
Hydrological climate change projections for Central America
(Journal of Hydrology 495: 94–112, 2013-05-04)Runoff climate change projections for the 21st century were calculated from a suite of 30 General Circulation Model (GCM) simulations for the A1B emission scenario in a 0.5 0.5 grid over Central America. The GCM data ... -
Hyperspectral reflectance measurements from UAS under intermittent clouds: Correcting irradiance measurements for sensor tilt
(2021)One great advantage of optical hyperspectral remote sensing from unmanned aerial systems (UAS) compared to satellite missions is the possibility to fly and collect data below clouds. The most typical scenario is flying ... -
I Simposio sobre Cambio Climático y Biodiversidad: Hacia el fortalecimiento de la resiliencia y acciones requeridas ante el Cambio Climático en Latinoamérica
(2019)El cambio climático es una variación significativa y permanente de los patrones globales del clima, sus consecuencias son irreversibles si no se toman las acciones pertinentes. En Latinoamérica, el cambio climático no ... -
ICSEM10 Slideshow
(2020-03-03)This is a slideshow produced for the 10th International Congress on the Systematics and Ecology of Myxomycetes, held in the city of Turrialba (UCR, Sede del Atlántico) in February 2020. -
Identificación de genes y proteínas relacionados con la producción de nanopartículas de selenio en Pseudomonas putida KT2440
(2019)Existen múltiples bacterias que pueden metabolizar selenito a selenio, no obstante, en muchos casos no se conocen bien los mecanismos mediante los cuales estos microorganismos llevan a cabo este proceso, siendo Pseudomonas ... -
Identificación de variantes raras de número de copias en una familia con alta prevalencia de psicosis
(2023)Los trastornos psiquiátricos son enfermedades que afectan los procesos afectivos y cognitivos de las personas y que están presentes en todas las poblaciones humanas. Son padecimientos complejos para los cuales se han ... -
Identification of Anziaic Acid, a Lichen Depside from Hypotrachyna sp., as a New Topoisomerase Poison Inhibitor
(2013)Topoisomerase inhibitors are effective for antibacterial and anticancer therapy because they can lead to the accumulation of the intermediate DNA cleavage complex formed by the topoisomerase enzymes, which trigger cell ... -
Identification of circadian gene variants in bipolar disorder in Latino populations
(2015)Background: Variations in circadian genes can impact biological rhythms. Given the rhythm disturbances that characterize bipolar disorder (BD), genes encoding components of molecular clocks are good candidate genes for ... -
Identification of polyphenols from antiviral Chamaecrista nictitans extract using high-resolution LC–ESI–MS/MS
(2014)Chamaecrista nictitans (L) extract possesses antiviral properties; it acts against the herpes simplex virus, and this may be attributed to its constituent phenolics. Here, high-resolution LC–ESI–MS/MS is used to identify ... -
Identification of Protein Kinase C Activation as a Novel Mechanism for RGS2 Protein Upregulation through Phenotypic Screening of Natural Product Extracts
(2014)Biochemical high-throughput screening is widely used in drug discovery, using a variety of small molecule libraries. However, broader screening strategies may be more beneficial to identify novel biologic mechanisms. In ...