Listar Investigación por título
Mostrando ítems 13847-13866 de 19072
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Pesticide occurrence and water quality assessment from an agriculturally influenced Latin-American tropical region
(2021-01)A monitoring study was carried out in three agriculturally influenced microcatchments in Costa Rica during 2012e2014, for pesticides and water quality parameters. A total of 42 pesticides were analyzed, detecting the ... -
Pet food quality assurance and safety and quality assurance survey within the Costa Rican pet food industry
(2019-11-15)Costa Rican animal feed production is continually growing, with approximately 1,238,243 metric tons produced in 2018. Production-wise, pet cat and dog food are in fifth place (about 41,635 metric tons per year) amongst ... -
PET/CT con F18-FDG en población infantojuvenil con diagnóstico de LInfoma. Experiencia del Servicio de Medicina Nuclear de la Pontificia Universidad Católica de Chile - Red de Salud UC Christus entre enero 2009 a junio 2019
(2021-02-08)Objetivo: el objetivo de esta investigación fue describir la experiencia en el uso del PET/CT con F18-FDG como herramienta imagenológica en población infantojuvenil con diagnóstico de linfoma Metodología: de forma ... -
Petrograbados y obras hidráulicas precolombinas en el Caribe de Costa Rica
(2016)Este trabajo presenta una serie de resultados acerca de investigaciones recientes que ponen en evidencia un vínculo directo entre ciertas representaciones hechas sobre piedra (petrograbados) y algunas estructuras antiguas ... -
Petróleo y resistencia en Centroamérica. El caso de "Acción de lucha antipetrolera (ADELA)" en el Caribe sur de Costa Rica (1999-2002)
(2016)Si bien Centroamérica no es reconocida internacionalmente como una región de explotación petrolera, en los últimos 20 años numerosas empresas transnacionales han estado implementando proyectos de exploración y explotación ... -
Pénfigo vulgar y su manejo integral: Reporte de dos casos y revisión de literatura
(2021-04-15)En la cavidad oral se pueden presentar lesiones en gíngiva que no están asociadas a placa bacteriana, las cuales requieren de un adecuado diagnóstico y tratamiento. La gingivitis descamativa está usualmente relacionada con ... -
Pérdida de peso en bovinos Bos indicus y Bos taurusdurante el proceso de subasta
(2012)The objective of this work was to determine the effect of commercialization process of a livestock auction on relative and absolute weight loss, according to gender, breed standard, commercial category, animal initial ... -
Pétroglyphes, religion et organisation politique au sud du Costa Rica
(2019)La religion a été une des principales forces de changement social qui ont influencé l’organisation politique et l’art à l’époque préhispanique. Cependant, un des plus grands défis de l’archéologie est ... -
Phalaenopsis schilleriana
(2004)El género Phalaenopsis, que consta de unas 60 especies, es uno de los más populares en la hibridación y la venta comercial, principalmente debido a la belleza, tamaño y duración de sus flores. Además, el crecimiento lento ... -
Pharmaceutical assistance programs to support smoking cessation medication access
(2017-11-03)OBJECTIVES: Rural smokers are more likely to be uninsured and live in poverty, which may pose significant cost barriers to accessing smoking cessation medications. As part of a randomized clinical trial, we provided support ... -
Pharmaceuticals in farms and surrounding surface water bodies: hazard and ecotoxicity in a swine production area in Costa Rica
(2021)The presence of pharmaceuticals in the environment is known to have multiple origins; livestock activities comprise one scarcely studied source, both globally and specially in Latin-America. This work aims to study the ... -
Pharmacokinetic-pharmacodynamic relationships of immunoglobulin therapy for envenomation.
(2003-07)Parenteral administration of horse- and sheep-derived antivenoms constitutes the cornerstone in the therapy of envenomations induced by animal bites and stings. Depending on the type of neutralising molecule, antivenoms ... -
Pharmacokinetics of whole IgG equine antivenom: comparison between normal and envenomed rabbits
(2006-09-01)Pharmacokinetics of antivenoms has been mainly studied in normal animals, whereas very little is known on pharmacokinetics in envenomed animals. The aim of this study was to compare pharmacokinetic parameters of whole IgG ... -
Pharmacological activities of a toxic phospholipase A isolated from the venom of the snake Bothrops asper
(1986)A toxic phospholipase A was isolated from the venom of Bothrops asper. It induced skeletal muscle damage, anticoagulant effects and edema in the foot pad. The toxin had an intravenous LD50 of 95 micrograms/16-18 g mouse ... -
Pharmacological modulation of edema induced by Lys-49 and Asp-49 myotoxic phospholipases A2 isolated from the venom of the snake Bothrops asper (terciopelo)
(1998-12)The pharmacological modulation of edema-forming activity of Bothrops asper myotoxins II and III, Lys-49 and Asp-49 phospholipases A2, respectively, was studied plethysmographically in the mouse foot pad model. Myotoxin III ... -
Pharmacological modulation of hyperalgesia induced by Bothrops asper (terciopelo) snake venom
(2001-08)The ability of Bothrops asper snake venom to cause hyperalgesia was investigated in rats, using the paw pressure test. Intraplantar injection of the venom (5–15 μg/paw) caused a dose and time-related hyperalgesia, which ... -
Pharmacological study of edema induced by venom of the snake Bothrops asper (terciopelo) in mice
(1995-01)The effect of several drugs on the edema-forming activity of Bothrops asper venom was studied plethysmographically using the mouse foot pad assay. Bothrops asper venom induced a dose-dependent edema which developed rapidly ... -
Phase-space representation for Galilean quantum particles of arbitrary spin
(1988-09)The phase-space approach to quantization is extended to incorporate spinning particles with Galilean symmetry. The appropriate phase space is the coadjoint orbit R^6 x S^2. From two basic principles, traciality and ...