Browsing Ciencias básicas by Title
Now showing items 537-556 of 3122
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Changes in Meteorological Variables in Coronel Oviedo, Paraguay, During the Total Solar Eclipse of 3 November 1994
(1996)Solar global radiation, air temperature, relative humidity, and wind speed were measured in Coronel Oviedo, Paraguay, within the path of totality of the eclipse of 3 November 1994. Global radiation decreased gradually ... -
Changes in nesting sites abundance and their use by woodpeckers along an urban gradient: a ten-year comparison
(2019)Woodpeckers nesting substrate abundance may be reduced by urban expansion, negatively affecting their reproduction. Long-term studies in the tropics are rare but valuable to estimate how urban development has affected ... -
Changes in solar irradiance and atmospheric turbidity in Costa Rica during the total solar eclipse of July 11, 1991
(1993)Solar global radiation was measured in several places in Costa Rica during the total solar eclipse that ocurred in July 11, 1991. In two of these places, Puntarenas and Santa Cruz, measurements in yhe ultraviolet range ... -
Chapter 10 - Quality Control Measures in the Analytical Laboratory
(Academic Press, 2018) -
Chapter 6: Founder variations in isolated populations
(2020)Isolated populations, also called population isolates and genetic isolates, present several characteristic features that make them useful in the study of the genetic basis of both Mendelian and complex disorders. The ... -
Characterising droughts in Central America with uncertain hydro-meteorological data
(2018)Central America is frequently affected by droughts that cause significant socio-economic and environmental problems. Drought characterisation, monitoring and forecasting are potentially useful to support water resource ... -
Characteristics of male Spot-bellied Bobwhite (Colinus leucopogon) song during territory establishment
(2012)In song-learning birds, male song shows a large inter-individual variation that frequently plays an important role in intra- and inter-sexual selection. In other bird groups, such as Galliformes, song learning is absent, ... -
Characteristics of the capture threads of Synotaxus sp. (probably S. turbinatus) webs (Araneae, Synotaxidae)
(2009)Synotaxus spiders have independently evolved aerial, planar webs to intercept and retain prey, but these webs differ in several respects from planar araneoid webs with similar functions. The silk capture threads of Synotaxus ... -
Characteristics of the cocoon and natural history of the gregarious Meteorus restionis sp. n. (Hymenoptera, Braconidae, Meteorinae) from Costa Rica
(2011)A new species of a gregarious Meteorus wasp (Braconidae) constructs an unusual cocoon mass. Meteorus restionis sp. n. is described and distinguished from similar species. Cocoons of M. restionis are dark-brown, ovoid, and ... -
Characteristics of tropical cyclones making landfall on the Pacific coast of Mexico: 1970-2010
(Centro de Ciencias de la Atmósfera de la Universidad Autónoma de México 26(2):163-182, 2013)Este estudio evalúa los impactos de los ciclones tropicales (CT) que tocaron tierra en áreas pobladas a lo largo de la costa del Pacífico mexicano. El periodo de interés abarca de 1970 a 2010 y se utiliza una base de datos ... -
Characteristics of Tropical Cyclones Making Landfall on the Pacific Coast of Mexico: 1970-2014
(2015-09)This study evaluates impacts from tropical cyclone (TC) landfalls on populated areas located along the Pacific Ocean coast of Mexico. The period of interest is from 1970 through 2014 and an international disaster database ... -
Characterization and Isolation of Piperamides from Piper nigrum cultivated in Costa Rica
(2023-11-30)The piperamides profile of Piper nigrum cultivated in Costa Rica was studied using Ultra Perfor-mance Liquid Chromatography coupled with Electrospray Ionization Quadrupole Time-of-Flight High Resolution Mass Spectrometry ... -
Characterization and phylogenetic relationships of strains of Dengue type 1 virus from Costa Rica
(Rev. Biol. Trop. (Int. J. Trop. Biol.), vol. 55, n. 2, 2007, 2007)Phylogenetic analysis of the envelope gene sequence (E) of three isolated Dengue virus type 1 (DEN- 1) sequences from the Costa Rican 1993 epidemic was performed. All the strains fell into genotype V. Genotype V has grouped ... -
Characterization and prediction of the Mid Summer Drought in the Tempisque river basin, North of Costa Rica, Central America, using ENSO and AMO relationships
(2014-11)On the Pacific slope of Central America, the precipitation annual cycle is characterized by two rainfall maxima in June and September-October, an extended dry season from November to May, and a shorter reduced precipitation ... -
Characterization of a Bacillus thuringiensis strain collection isolated from diverse Costa Rican natural ecosystems
(Universidad de Costa Rica, 2006-03-19)Como los ecosistemas naturales de Costa Rica figuran entre los más diversos del mundo, se propuso aislar la bacteria entomopatógena Bacillus thuringiensis (Bt) con el fin de conformar una colección de cepas y caracterizarlas ... -
Characterization of atmospheric structures observed by a VHF MST-type radar in the troposphere over Santa Cruz, Costa Rica
(2019)Results from the frst VHF profler research radar in Costa Rica, operating at a central radar frequency of 46.6 MHz, are presented. Emphasis has been on studies of scattering layers detected in the altitude range 1–6 km, ... -
Characterization of Batrachochytrium dendrobatidis Inhibiting Bacteria from Amphibian Populations in Costa Rica
(2017)Global amphibian declines and extinction events are occurring at an unprecedented rate. While several factors are responsible for declines and extinction, the fungal pathogen Batrachochytrium dendrobatidis (Bd) has been ... -
Characterization of Expression Quantitative Trait Loci in Pedigrees from Colombia and Costa Rica Ascertained for Bipolar Disorder
(2016-05-13)The observation that variants regulating gene expression (expression quantitative trait loci, eQTL) are at a high frequency among SNPs associated with complex traits has made the genome-wide characterization of gene ... -
Characterization of principal bundles: the commutative case
(2023-10-04)A review of the characterization of principal bundles, through the different properties of the action of a group and its related canonical and translation maps, is presented. The work is divided in three stages: a topological ... -
Characterization of principal bundles: the noncommutative algebraic case
(2024)We review Hopf–Galois extensions, in particular faithfully flat ones, accepted to be the noncommutative algebraic dual of a principal bundle. We also make a short digression into how quantum groups relate to Hopf—Galois ...