Browsing by Title
Now showing items 1820-1839 of 13288
-
Characterizing tsunami signals from the Hunga Tonga-Hunga-Ha’apai eruption and its effects on the Caribbean
(American Geophysical Union, 2022-12-13)The Hunga Tonga Hunga Ha'apai eruption of January 15 2022, was a rare geological event, resulting in atmospheric pressure waves being recorded around the world. The event caused significant environmental consequences, ... -
Chavela Vargas : su mitificación como personaje artístico y cultural
(Universidad Nacional, Costa Rica, 2019-03-08)Luego de seis años del deceso de Chavela Vargas, resulta imposible negar su notoriedad en el ámbito artístico, su transgresión a los roles femeninos de principios del siglo XX y su relación con artistas influyentes, todos ... -
El che y la eternidad historica
(Universidad Nacional, Costa Rica, 1999) -
Chechnya and regional order: The bear against the scimitar
(Universidad Nacional, Costa Rica, 2002)El fin de la Guerra Fría se inauguró como remate de una posible guerra nuclear entre las superpotencias como Estados Unidos y la Unión Soviética. Pero esta nueva era ha comenzado con una escalada de conflictos étnicos ... -
Checklist of the vascular flora of Reserva Biológica San Luis, Costa Rica
(Pensoft, 2016-03-21)The Reserva Biológica San Luis is a small protected area located on the Pacific side of the Cordillera de Tilarán, northwestern Costa Rica, with a forest transitioning between the basal and premontane floras according to ... -
Chemical And Extractives Compatibility Of Empty Bunch Fruit Of Elaeis Guineensis, Leaves Of Ananas Cumosos And Tetrapak With Wood Used In Particleboards In Tropical Areas
(Universidad Nacional del Sur (UNS), 2015)Tropical countries produce a great variety of lignocellulosic residues from small-area planted crops. Large amount of "Tetra Pak" package are also produced without any disposal treatment. In order to give solutions for ... -
Chemical and functional characterization of antimicrobial metabolites isolated from ascidian Rhopalaea Birkelandi
(Universidad Nacional (Costa Rica), 2011-12)Marine ecosystems have a very large diversity of resources, most of them still partially unknown, and a few others exploited for development of new industrial and toxicological products. The objective of this investigation ... -
Chemical characterization of filterable PM2.5 emissions generated from regulated stationary sources in the Metropolitan Area of Costa Rica
(Elsevier, 2017-01-14)Filterable PM2.5 concentrations and their chemical characterizations were analyzed for 67 boilers and 25 indirect furnaces located in the Metropolitan Area of Costa Rica from February 2014 to November 2015. The PM2.5 samples ... -
Chemical composition of PM 2.5 particles in Salamanca, Guanajuato Mexico: Source apportionment with receptor models
(Science Direct, 2012-04)The National Institute of Ecology, through Management General for Environmental Research and Training (DGCENICA) carried out a sampling campaign where a total of 21 elements were determined in 140PM 2.5 samples from one ... -
Chemical constituents from Zanthoxylum setulosum (Rutaceae)
(Universidad Nacional, Costa Rica, 2011-02-10)Following our phytochemical studies of Costa Rican plants, in this work we report the isolation and identification of eight compounds from aerial parts of Zanthoxylum setulosum (Rutaceae). They were identified as the ... -
Chemical tradeoffs in seed dispersal: defensive metabolites in fruits deter consumption by mutualist bats
(Oikos, 2015-09-08)Although fleshy fruits function primarily to attract seed dispersers, many animal‐dispersed fruits contain potentially toxic secondary metabolites. These metabolites can provide defense against seed predators and pathogens, ... -
Chiapas y la independencia centroamericana
(Universidad Nacional, Costa Rica, 2019-09)Explica las causas por las cuales tras la independencia del Reino de Guatemala, la región de Chiapas decidió terminar su relación política con dicho país, y anexarse a México, tras su reciente independencia de España, entre ... -
Child Soldiers in Colombia
(Universidad Nacional, Costa Rica, 2004)Esta investigación es el proyecto final de la Maestría en Educación en Derechos Humanos y para la Paz de la Universidad Nacional de Costa Rica. Se trata de la participación infantil en el conflicto armado en Colombia ... -
Childhood leukaemia in Costa Rica, 1981-96
(Blackwell Science, 2002)Childhood leukaemia incidence in Costa Rica during 1981-96, among the highest in the world, was analysed by histology, gender, birth year, time period of diagnosis, age at diagnosis and region. Numbers of cases were extracted ... -
Children and a second language: learning to speak.
(2012-11-09) -
Los Chiles, Costa Rica
(IDESPO-UNA, 2011)Los Chiles es el segundo cantón más pequeño de la Región Huetar Norte de Costa Rica, con una extensión de 1359 Km. cuadrados y una población que asciende a 22190 habitantes. Es una zona eminentemente rural en donde la ... -
China y la geoestrategia de Estados Unidos en el siglo XXI
(Universidad Nacional, Costa Rica, 2012)Se explican los cálculos geoestrategicos elaborados por Estados Unidos y sus aliados, quienes recurren al "poder inteligente", a fin de preservar la hegemonía estadounidense y los valores occidentales en la arena internacional -
Los chinos en la sociedad costarricense
(Centro de Estudios Generales, Universidad Nacional, Costa Rica, 1995-01)La adaptación de grupos étnicos a entornos culturales disímiles siempre constituye una dolorosa experiencia tanto para el que se inserta como para la sociedad que los recibe. Los chinos llegaron en 1872 a desafiar con su ... -
Chirripo Hydrological Research Site: advancing stable isotope hydrology in the Central American Paramo
(AUTHOREA, 2021)Tropical mountainous ecosystems are recognized as providers of valuable ecological and hydrological services (Viviroli et al, 2007). In Central America, the P aramo, a high-elevation tropical grassland ecosystem, extends ... -
Chirripó Hydrological Research Site: advancing stable isotope hydrology in the Central American Páramo
(2020-01-25)The Chirripó Hydrological Research Site (CHRS) is located within the Chirripó National Park, Costa Rica (between 3,100-3,820 m asl) whereby ~100 km2 are covered by Páramo, a high‐elevation tropical grassland ecosystem. A ...
