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Now showing items 13579-13598 of 13648
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Washback Effects of Board-Based Speaking Tests
(Universidad Nacional, Costa Rica, 2020-07-06)This study analyzes the opinions of a group of three English as a Foreign Language programs, on the washback effects of board-based oral tests on the students’ language proficiency and foreign language anxiety ... -
Waste management: a study on generating organic fertilizer from oil and grease trap systems
(Universidad Nacional, Costa Rica, 2022-01-31)The grease and oil trap systems (GOTS) of four university food service establishments (FSE) were assessed and treated to evaluate the potential use of the sludge collected to produce compost. The sludge collected from each ... -
Waste minimization practices at the National University of Costa Rica
(WIT Press (Reino Unido), 2016)Hazardous materials are substances that are flammable, corrosive, reactive, toxic, radioactive, poisonous, carcinogenic, or infectious. According to the USEPA (United State Environmental Protection Agency), waste is ... -
Water governance and adaptation to drought in Guanacaste, Costa Rica
(Universidad Nacional, 2019-06-13)In this chapter we review the key learnings and challenges for water management in a territory where water is severely affected by climatic variability: the Guanacaste province in Northwestern Costa Rica. In this territory ... -
Water stable isotopes reveal the hydrological response of Costa Rican glacial lakes to climate variability
(Elsevier (Países Bajos), 2022)Los lagos generalmente se consideran una fuente de información clave para comprender el paleoclima. Aquí usamos estable. Isótopos de agua (δ2H y δ18O) en un lago glacial tropical de gran altitud para informar sobre la ... -
Water-Soluble Anions in PM10 Samples Collected in the Metropolitan Area of Costa Rica: Temporal and Spatial Variations
(MDPI journals, 2021-09-28)The concentrations of water-soluble anions present in PM10 collected from ambient air in four sites of Costa Rica’s greater metropolitan area (GAM) were analyzed. Samples were collected over a 24-h period for three days ... -
Web 2.0 en la docencia universitaria
(Oficina de Comunicación, Universidad Nacional, 2010-02)¿Ha escuchado hablar del concepto de Web 2.0? En estos momentos es uno de los términos más repetidos y comentados en Internet. Por ejemplo, si se busca ese concepto en Google aparecen más de 300 mil de enlaces. Pero ¿se ... -
Web 2.0, social networks and E-commerce as marketing tools
(Journal of Theoretical and Applied Electronic Commerce Research, 2014)The spectacular development of the Web 2.0, particularly through online social networks, has awakened much interest in different areas. Marketing is one of them and businesses have decided to experiment with this new type ... -
Webinar: estándares internacionales y prácticas en el acceso a la información pública durante el COVID-19
(Universidad Nacional, Costa Rica, 2020-10-13)El objetivo del videos es compartir el webinar "Estándares internacionales y prácticas en el acceso a información pública durante el COVID-19", que se llevo a cabo del mes de octubre, desarrollado por la escuela de relaciones ... -
Webinar: ¿un nuevo mundo tras el coronavirus?
(Universidad Nacional, Costa Rica, 2020-05-03)El objetivo de este video es ver el Webinar "¿Un nuevo mundo tras el coronavirus?", presentado por la escuela de relaciones internacionales de la UNA. -
What are the Main Sensor Methods for Quantifying Pesticides in Agricultural Activities? A Review
(Multidisciplinary Digital Publishing Institute, 2019-07-23)In recent years, there has been an increase in pesticide use to improve crop production due to the growth of agricultural activities. Consequently, various pesticides have been present in the environment for an extended ... -
What do we really know about how velvet worms mate?
(Universidad de Costa Rica (Costa Rica), 2019)After more than a century of studying a phylum that has over 200 species, we only have three reports of the mating itself. Insemination can occur vaginally or through the skin, and it is suspected that the male simply ... -
What do we Think About Water?Public Perception of the Current Situation of Water Resources in Costa Rica: an Indicator of Water Understanding and Management
(Universidad Nacional (Costa Rica), 2020-01-31)The objective of this research was to determine the level of knowledge and perception of the Costa Rican population about water for human consumption, general concepts, the impact of human activities, the ... -
What do we Think About Water?Public Perception of the Current Situation of Water Resources in Costa Rica: an Indicator of Water Understanding and Management
(Universidad Nacional (Costa Rica), 2020-01)The objective of this research was to determine the level of knowledge and perception of the Costa Rican population about water for human consumption, general concepts, the impact of human activities, the ... -
What have we learned from brucellosis in the mouse model?
(Veterinary Research, 2012)Brucellosis is a zoonosis caused by Brucella species. Brucellosis research in natural hosts is often precluded by practical, economical and ethical reasons and mice are widely used. However, mice are not natural Brucella ... -
What Is the Evolutionary Fingerprint in Neutrophil Granulocytes?
(University of Veterinary Medicine Hannover, Hannover, Germany, 2020-06-25)Over the years of evolution, thousands of di erent animal species have evolved. All these species require an immune system to defend themselves against invading pathogens. Nevertheless, the immune systems of di erent ... -
What is the evolutionary fingerprint in neutrophil granulocytes?
(MDPI AG, 2020-06-25)Over the years of evolution, thousands of different animal species have evolved. All these species require an immune system to defend themselves against invading pathogens. Nevertheless, the immune systems of different ... -
What it takes to be a first-year student: an ethnographic study at Universidad Nacional, Brunca Extension
(II Congreso Internacional de Lingüística Aplicada CONLA UNA, 2015)Esta investigación se enmarca dentro del enfoque cualitativo y el diseño etnográfico. Se reporta la descripción de una etnografía realizada en Universidad Nacional, Sede Regional Brunca con un grupo de estudiantes de primer ... -
WhatsApp como herramienta de intervención didáctica en el proceso de enseñanza-aprendizaje de la matemática
(2024-05-20)Objetivo. El propósito de este artículo es determinar si la utilización de una aplicación móvil como WhatsApp en el entorno educativo, es apropiada como herramienta pedagógica, con el fin de fortalecer el proceso de ...
