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Now showing items 4036-4055 of 13338
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Efectos sobre la función neuromuscular de correr un maratón en condiciones de calor y humedad extremos en participantes aficionados abordaje tensiomiografía y cinemático
(Universidad Nacional de Costa Rica, 2016)Describe los efectos neuromusculares que conlleva la participación de corredores aficionados en un maratón en condiciones extremas de calor y humedad desde un abordaje tensiomiografía y cinemático. Se realizaron mediciones ... -
Los efectos sociales de la crisis
(Editorial de la Universidad Nacional, 1990-12)Presenta el enfoque de algunos aspectos relacionados con los mercados de trabajo en el contexto de la crisis para América Latina, puntualizando el caso de Costa Rica. Expone efectos de la crisis en dichos mercados y señala ... -
Efectos sociales, emocionales y académicos en niños con obesidad de las escuelas; Fernando Valverde Vega, La Hermosa y Peñas Blancas, circuito 05, DRE. PZ. 2009.
(Universidad Nacional, Costa Rica, 2009)Analiza los efectos de la obesidad en el área social, emocional y académica que presentan los niños de las escuelas Fernando Valverde Vega, La Hermosa y Peñas Blancas, circuito 05, DRE. La investigación se desarrolló bajo ... -
Efectos socio-económicos, psicológicos y culturales de la desintegración familiar en niños y niñas del Centro Educativo de atención prioritaria Cocorí, curso lectivo 2005.
(Universidad Nacional, Costa Rica, 2007)A continuación, se presenta un informe general sobre el seminario de graduación realizado para investigar cuáles son los efectos socioeconómicos, psicológicos y culturales de la desintegración familiar. La información ... -
Effect of a killed whole Neospora caninum tachyzoite vaccine on the crude abortion rate of Costa Rican dairy cows under field conditions
(Elsevier B.V, 2004-06-04)A standard field trial was carried out to assess the effect of a commercial Neospora-vaccine based on whole killed tachyzoites (Bovilis–Neoguard, Intervet1) on the abortion rate. Eight hundred and seventy-six cows, over ... -
Effect of adjuvants on the antibody response of mice to Bothrops asper (Terciopelo) snake venom
(Brazilian Journal of Medical and Biological Research, 1996)The adjuvant properties of several immunostimulant molecules on the murine antibody response to Bothrops asper snake venom were evaluated. Mice receiving venom together with either sodium alginate, calcium alginate, aluminum ... -
Effect of an energy supplementation, weaning and oestrous synchronisation on ovarian activity and ovulation in early postpartum primiparous Bos indicus cows raised in the tropics of Costa Rica
(American Society for Microbiology., 2015-09-07)To evaluate the effect of an energy supplementation, 26 postpartum Bos indicus cows were assigned either to receive an energy diet supplementation (n ≤ 11, SSD) or no supplementation (n ≤ 15, NSSD). Cows in the SSD treatment ... -
Effect of dietary lipid level on protein utilization and the size and proximate composition of body compartments of Colossoma macropomum (Cuvier)
(Wageningen Agricultural University, 1997)Juvenile Colossoma macropomum were fed ad libitum diets containing either 30% or 40% protein, while the dietary lipid level varied between 5% and 20%. Growth and protein utilization efficiency increased with the dietary ... -
Effect of different chemical treatments on nutritional and antinutritional properties of coffee pulp
(Elsevier, 2002)Different chemical treatments were tested to improve the nutritional value of coffee pulp (CoP): (1) alkali, NaOH solutions of 5 and 10% for 24 and 48 h; (2) a combination of acid and alkali, with first a treatment with ... -
Effect of extreme climatic events resulting in prolonged precipitation on the reproductive output of sea turtles
(Universidad Nacional, Costa Rica., 2018)Anthropogenic climate change is predicted to increase the variation in storm patterns in some areas in the coming decades. This variation in mean rainfall and increase in mean temperature could increase the extinction risk ... -
Effect of feeding level on feed losses and feed utilization of soya and fish meal diets in Colossoma macropomum (Cuvier)
(Wageningen Agricultural University, 1997)Juvenile, 1-g Colossoma macropomum (Cuvier) were fed two different diets: one with fish meal and another with soya meal as the main dietary protein source. Both diets were provided at ad libitum feeding level, and at two ... -
Effect of inorganic salts and matrix crosslinking on the dose response of polymer gel dosimeters based on acrylamide
(Elsevier Ltd, 2018-07-17)The use of additives in polymer gel dosimeters to enhance their sensitivity or to improve their performance is of great importance for their application in radiomedicine. Inorganic salts have been used as additives with ... -
Effect of management and host factors on seroprevalence of bovine anaplasmosis and babesiosis in Costa Rica
(Elsevier B.V, 1993-11-16)The relationships between the seroprevalences of Anaplasma rnarginale, Babesia bige mina, Babesia bovis and some selected factors were assessed. Factors studied were age, breed, herd size, farm size, rotational grazing ... -
Effect of metal concentration on growth and luminescence of luminous bacteria straims isolated from golfo de Nicoya, Costa Rica
(Universidad Nacional (Costa Rica), 2021-01)Luminescence in bacteria is catalyzed by luciferase. When these microorganisms are exposed to toxic substances, the bioluminescent enzyme system can be inhibited. The objective of this study was to analyze the potential ... -
Effect of neosporosis on productive and reproductive performance of dairy cattle in Costa Rica
(Elsevier B.V, 2005-12)A cross-sectional study was conducted to assess the effect of neosporosis on productive and reproductive parameters in dairy cows. Cows (n = 2743) from 94 farms located in the most important dairy areas in Costa Rica were ... -
Effect of organic nitrogen and carbon mineralization on sediment organic matter accumulation in fish ponds
(Aquaculture Research, 2005-07-01)In aquaculture, ponds with high loads of organic inputs, organic matter accumulates at the bottom over time. Uneaten feed, senescent phytoplankton and faeces are the principal sources of accumulated material, but quanti¢cations ... -
Effect of prey availability on the abundance of White-breasted Wood-Wrens, insectivorous birds of tropical lowland forests
(Universidad Nacional, Costa Rica., 2014)Some understory insectivorous birds manage to persist in tropical forest fragments despite significant habitat loss and forest fragmentation. Their persistence has been related to arthropod biomass. In addition, forest ... -
Effect of ruminally protected Methionine on the productive and reproductive performance of grazing Bos indicus heifers raised in the humid tropics of Costa Rica
(Springer Science + Business Media B.V., 2008-03-11)With the objective of evaluating the effect of methionine supplementation prior to a breeding program, thirty one heifers (Bos taurus x Bos indicus) were used averaging 386 ± 29 days of age and a mean body weight of ...