Browsing by Title
Now showing items 5217-5236 of 13166
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Evaluating watershed health in Costa Rican national parks and protected areas
(Springer Science and Business Media Deutschland GmbH, 2020-08-11)Although the biodiversity of Costa Rican national parks, forests, and wetlands has been extensively surveyed, there has not been a watershed assessment that refects their baseline water quality. Undoubtedly, the infux of ... -
Evaluation by a teacher of the suitability of her mathematics class
(Universidad de Sao Paulo, 2019)Evaluation of teaching practice is a necessary task to improve the teaching and learning processes. The purpose of this study is to analyze the assessments made by a Mathematics in-service teacher when she observed a ... -
Evaluation of a battery of toxicity tests for use in the assessment of water quality in a Costa Rican laboratory
(Wiley Periodicals, Estados Unidos, 2000)The Laboratory for Ecotoxicological Studies (ECOTOX) of IRET evaluated the following toxicity tests: Daphnia magna (daphnia test), Hydra attenuata (hydra test), Allium sp. (onion test), Panagrellus redivivus (nematode ... -
Evaluation of a voluntary control program for the detection of Bovine Leukemia Virus antibodies based on agar gel immunodiffusion test in dairy farms in Costa Rica
(Universidad Nacional, Costa Rica, 2015-05-02)A total of 20 farms were analyzed repeatedly during five years using only the agar gel immunodiffusion test (AGIDT) as part of a voluntary control program of Bovine Leukemia Virus (BLV). After five years of cleaning up ... -
Evaluation of early embrionic development after natural mating using ultrasonography in bos indicus cows in the humid tropics of Costa Rica
(Springer, 2008)Fifty-eight nursing Zebu cows averaging 5922 days postpartum were used to evaluate the early embryonic development by ultrasound under a natural mating system (bulls A to F). Three consecutive mating periods of 21 days ... -
Evaluation of Escherichia coli concentrations in Crassostrea gigas and seawater in two oyster growing areas in the Gulf of Nicoya, Costa Rica
(Universidad Nacional (Costa Rica), 2014-12)Costa Rica does not have references on the health quality of Crassostrea gigas growing areas, which can pose a po tential public health risk. This study evaluated the temporal trends of Escherichia coli concentrations in ... -
Evaluation of the collaboration process from an individual and collaborative perspective
(ACM International Conference Proceeding Series, 2014-09)Many proposals to evaluate the collaborative process focus on "measure" the group's participation in the fulfillment of the activity and do not consider the individual aspect. This paper reports the results of an exploratory ... -
Evaluation of the manipulation that is given to the fishery product in terms of quality and safety at the time of its capture by the artisanal fisherman of the Gulf of Nicoya, Costa Rica
(Universidad Nacional, Costa Rica, 2017-12-18)The research evaluated the handling and storage type that is given to the fish product in terms of quality and safety at the time of its capture by the fisherman. The methodological tool for obtaining the primary information ... -
Evaluation of Three Methods to Estimate Density and Detectability From Roadside Point Counts
(Universidad Nacional, Costa Rica., 2011)Roadside point counts are often used to estimate trends of bird populations. The use of aural counts of birds without adjustment for detection probability, however, can lead to incorrect population trend estimates. We ... -
Evaluation of two self-administered questionnaires to ascertain dermatitis among metal workers and its relation with exposure to metal working fluids
(Blackwell Publishing, Dinamarca., 2007)We performed an exploratory study to evaluate 2 self-administered questionnaires assessing hand dermatitis and to investigate a possible exposure-response relation between dermal exposure to semisynthetic metal working ... -
Evaluation of volume change in rectum and bladder during application of image-guided radiotherapy for prostate carcinoma
(AIP Conference Proceedings, 2016-07-07)All prostate cancer patients from Centro Médico Radioterapia Siglo XXI receive Volumetric Modulated Arc Therapy (VMAT). This therapy uses image-guided radiotherapy (IGRT) with the Cone Beam Computed Tomography (CBCT). This ... -
La evangelización imposible
(Editorial Universidad Nacional, 1992-01-01)Expone sobre los 500 años de evangelización de América y los estudios que hay, según la perspectiva del autor, con diversos análisis y posiciones, como que la evangelización de las culturas amerindias fue posible y hasta ... -
Evangelización y proselitismo en la época colonial
(Universidad Nacional, Costa Rica. Centro de Estudios Generales, 1979)La historia eclesiástica de la América española del periódo colonial, no se puede considerar como un sector separado del desarrollo general de los acontecimientos, sino que se debe de tomar en cuenta la estrecha conexión ... -
La evasión fiscal como un juego perder-perder. (SDT 001-2004)
(Centro Internacional de Política Económica para el Desarrollo Sostenible (CINPE), 2004)El presente documento formaliza en un juego tipo "dilema del prisionero" el comportamiento común de los ciudadanos de una economía hacia la evasión fiscal. Se concluye que este tipo de comportamiento, si bien maximiza los ... -
Event report: “Green adaptation strategies for water security in the Central American Dry Corridor”. Nicoya, Costa Rica.
(Universidad Tecnológica de Dresde, Alemania, 2019-11)This document contains the report of the workshop entitled “Green adaptation strategies for water security in the Central American dry corridor” organized in Nicoya, Costa Rica, on 26 March 2019. The workshop represented ... -
Event-time analysis of reproductive traits of dairy heifers
(Elsevier, 1998-11)Data on the reproductive traits of dairy heifers were analyzed using event-time techniques. Traits analyzed were age at first calving (n = 4631), days to first breeding, and days open (n = 1992) during the first ... -
Evidence for vocal diversity during physical interference at the perch in sympatric Carollia species (Chiroptera: Phyllostomidae): a key to social organization and species coexistence?
(Oxford Academic (Reino Unido), 2022-02)Vocal diversity might reflect the social organization and sustain the coexistence of cryptic species in sympatry. To test the extent to which vocal behaviour separates sympatric, cryptic species of a bat radiation, we ... -
Evidence of colonization of man-made ecotopes by Triatoma dimidiata (Latreille, 1811) in Costa Rica
(Memórias do Instituto Oswaldo Cruz, 2001-07)Triatoma dimidiata adults have been frequently found, during the last five years, in a dog kennel and a chicken coop, in the back yard of a well-built house, 15 km from San José, the capital of Costa Rica. In the chicken ... -
Evidencia fotográfica de especies desconocidas de onicóforos (Onychophora: Peripatidae) de Costa Rica
(Universidad Estatal a Distancia (Costa Rica), 2016-12)Onychophorans are hard to find and identify to species under field conditions. Currently, there are seven species described from Costa Rica, and an appropriate taxonomic revision is necessary. However, technology allows ... -
Evidencias psicométricas en escalas de medición de recursos de apoyo social y emocional durante la vejez en una muestra de personas adultas mayores en Costa Rica
(Universidad Nacional, Costa Rica, 2021-12-09)El principal enfoque de este Trabajo Final de Graduación es generar evidencias psicométricas de validez y confiabilidad de la Escala de Red Social de Lubben (LSNS-R), la Escala de Soledad UCLA y el Cuestionario de Apoyo ...
