Browsing Facultad de Ciencias Exactas y Naturales by Title
Now showing items 102-121 of 272
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Factibilidad técnica del uso conjunto de tapetes microbianos y bioflóculos en sistemas de recirculación para acuicultura
(2017-07-01)La bioremediación de aguas en sistemas recirculados para el cultivo de organismos acuáticos mediante la utilización de tapetes microbianos construidos es parcialmente efectiva ya que elimina algunos de los productos no ... -
Factores que influyen en la forma de la cola de un tsunami
(UNICIENCIA Vol. 23 65-69, 2009)The propagation speed of a tsunami depends on the depth of the ocean in which it propagates. As the tsunami crosses the abyssal plain, it suffers modifications in its form due to change in the depths of the ocean bottom. ... -
First description of macropterous male and female of Cryphocricos latus (Heteroptera: Naucoridae) Usinger
(2013-03-29)The macropterous male and female of Cryphocricos latus are herein described for the first time; both were collected in Alajuela, Costa Rica. Notes to separate this species from other macropterous species of the genus are given. -
First measurements of methyl tert-butyl ether (MTBE) in the ambient air in San Jose, Costa Rica
(2014)A great interest has arisen in establishing the impact of organic compounds on human health and air quality, especially those compounds emitted by automotive traffic. Knowledge of urban air pollutant concentrations is ... -
First record of the genus ocyochterus from Colombia and new records of ochteridae from costa rica (Hemiptera:Heteroptera)
(2015)The frst Colombian record of Ocyochterus, expanding the previously known distributional range of the genus. Additionally, records of two species of Ochterus from Costa Rica are provided. The material examined is deposited ... -
First record of the sea anemone Anthopleura nigrescens (Cnidaria: Actiniaria: Actiniidae) on the Pacific coast of Central America
(Marine Biological Association of the United Kingdom, 2012-08)We report the first record of the sea anemone Anthopleura nigrescens on the Pacific coast of Central America. Five specimens from Mata Limón (Costa Rica) were collected from rocks of a man-made breakwater at sub-tidal ... -
Floristic composition and richness of urban domestic gardens in three urban socioeconomic stratifications in the city Heredia, Costa Rica
(Urban Ecosystems Vol.20 51-63, 2017)The urban domestic gardens that are part of urban green areas have become a very important element due to their ecosystematic benefits and the poor information about them. Information regarding the floristic richness of ... -
Formulación y estructuración del financiamiento para Polímeros y Servicios S.A. a fin de proteger su propiedad intelectual
(2015-11-13)Es necesario fomentar la protección de la propiedad intelectual en las empresas nacionales. El Estado debe procurar esto como una meta estratégica. En nuestro país no existe una cultura de protección de la propiedad ... -
Gender gap in computer science programs from Costa Rican Public universities: Are Women Really Becoming Extinct?
(38th Latin America Conference on Informatics, 2012-10-01)There is evidence that women tend to be underrepresented in computer science programs (CS) in many countries. Based on this fact, we analyzed the gender situation in Costa Rica finding that this situation also applies to ... -
Gestionando el riesgo por tsunami desde las comunidades
(IV Congreso Nacional de Gestión del Riesgo y Adaptación al Cambio Climático, Heredia 10 y 11 de octubre 2018, 2018)En caso de que la Comisión Nacional de Prevención de Riesgos y Atención de Emergencias (CNE) declare alerta por tsunami, las personas que se encuentran zonas de riesgo deben evacuar antes de la llegada de la primera ola. ... -
Gestión de Procesos Preventivos en Servicios de TI del Hospital México
(2016)El Hospital México es uno de los hospitales más importantes de Costa Rica, el cual utiliza las Tecnologías de Información (TI) como un gran apoyo para brindar sus servicios diariamente. TI se pueden convertir en el mejor ... -
Gestión del Conocimiento (Knowledge Management) en Sistema de Gestión de Contenidos para Componentes Intel de Costa Rica.
(2013-11)El presente proyecto corresponde al ámbito de la Tecnología Educativa y la Investigación o desarrollo de las tecnologías para la educación. Su alcance se adscribe a la necesidad de optimizar los activos intelectuales de ... -
Grado de satisfacción por parte de los estudiantes con respecto al servicio de tutorías que brinda la Universidad Nacional
(Congresos CLABES, 2019-11)Una de las alternativas que suelen implementar las instituciones de educación superior para reducir las tasas de abandono y mejorar el rendimiento académico son las tutorías. Por lo general, estos programas son impartidos ... -
Graphene flakes obtained by local electro-exfoliation of graphite with a STM tip
(Physical Chemistry Chemical Physics vol.11 no.19 8061-8068 2017, 2017-02-24)Graphite surfaces can be manipulated by several methods to create graphene structures of different shapes and sizes. Scanning tunneling microscopy (STM) can be used to create these structures either through mechanical ... -
Growth of Oreochromis aureus fed with diets containing graded levels of coffee pulp and reared in two culture systems
(Aquaculture vol.217 no.1-4 275-283 2003, 2003)A study was conducted to compare growth and feed utilization of Oreochromis aureus fed graded levels of coffee pulp (CoP) and reared in aquaria or in pens. Diets contained 0, 130, 260 and 390 g kg 1 of oven-dried CoP. ... -
Hábitat potencial y uso de hábitat del cocodrilo americano (Cocodrilus acutus) y su relación con la vulnerabilidad de cinco poblados del Pacífico Central de Costa Rica ante posibles incidentes humano-cocodrilos
(Universidad Nacional, Costa Rica, 2020)El Crocodylus acutus es una especie que posee un papel importante dentro del ambiente natural, ya que ayuda a mantener el equilibrio ecológico. Sin embargo, se ha visto amenazado por la pérdida de su hábitat, debido ... -
Hidrography and river plumes in Golfo Dulce, South Pacific of Costa Rica
(Universidad de Costa Rica, 2015-07)Oceanographic variables at 33 stations distributed in Golfo Dulce, Costa Rica, during the dry and rainy seasons between 2009 and 2010, were analyzed with CTD profiles, where salinity, temperature, sigma-T and currents were ... -
Historia de la matemática una herramienta metodológica en procesos de enseñanza y aprendizaje de la geometría en el currículo de sétimo año
(Universidad Nacional, Costa Rica, 2003)Designs and develops an alternative proposal on how to implement in the classroom the study of the contents of geometry in the seventh year with the help of historical elements of mathematics. In this research, 60 high ... -
Human resources in computer sciences in Costa Rica: The elusive gap between supply and demand
(International Conference on Information Society, 2017-07-17)We analyze in this paper the supply and demand of human resources in computer sciences in Costa Rica. This is done with the aim of validating claims made by the local media about a large deficit of professionals for ICT ...
