Escuelas y Departamentos: Envíos recientes
Mostrando ítems 321-340 de 660
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Ganancia genética esperada en melina (Gmelina arborea Roxb.) en Córdoba (Colombia)
(Espitia, M., Murillo, O., & Castillo, C. (2016). Ganancia genética esperada en melina (Gmelina arborea Roxb.) en Córdoba (Colombia). Revista Árvore, 40(1), 71-80., 2016)El Departamento de Córdoba (Colombia) planea plantar 200000 ha para el 2025 y Gmelina arborea es una de las opciones dada su alta producción de biomasa en turnos cortos. El objetivo del estudio fue estimar el potencial ... -
A fault-tolerance protocol for parallel applications with communication imbalance
(IEEE, 2015)The predicted failure rates of future supercomputers loom the groundbreaking research large machines are expected to foster. Therefore, resilient extreme-scale applications are an absolute necessity to effectively use ... -
A simple approach for the design of operational transconductance amplifiers for low power signal processing
(IEEE, 2010)A simple approach for the design, fabrication and characterization of a operational trasconductance amplifier intended for work in low power applications is reported in this work. DC Measured parameters agree with ... -
Towards a fuzzy logic model for chemical risk assessment by inhalation in laboratories
(Proceedings of the 2015 IEEE 35th Central American and Panama Convention, CONCAPAN 2015, 2015)This paper presents a computational Fuzzy Logic Model for chemical hazards risk assessment by inhalation in laboratories. Some influence factors on chemical risk are deterministic but not completely measurable. As a ... -
Flexible silicon photonic transmitter with segmented modulator and 32 nm CMOS driver IC
(2016 Conference on Lasers and Electro-Optics, CLEO 2016, 2016)We present a novel silicon photonic transmitter including 90nm CMOS segmented modulator co-packaged with low power 32nm CMOS driver IC. Optical equalization is demonstrated for the first time with the multi-segment ... -
Evaluation of chemical compositions, air-dry, preservation and workability of eight fastgrowing plantation species in Costa Rica
(Revista Madera y Bosques, 2015)Costa Rica has successfully planted various forestry species for wood production. However, the use of their wood is limited, due to poor knowledge about their chemical properties, air-dry, preserved and workability ... -
La actitud del personal docente de matemática hacia el aprendizaje cooperativo y los elementos institucionales que favorecen o dificultan el empleo de esa metodología didáctica.
(Revista Electrónica Educare, 2014)This paper presents the results of research conducted in high schools in the central region of the Cartago province, Costa Rica. The goal of the research was to determine the attitude of high school math teachers toward ... -
Assessing the performance of several rainfall interpolation methods as evaluated by a conceptual hydrological model
(Scopus, 2016)The objective of this study was to assess the performance of several rainfall interpolation methods as evaluated by a conceptual hydrological model. To this purpose, the upper Toro River catchment (43.15 km2) located in ... -
Biomass yield and energy potential of short-rotation energy plantations of Gmelina arborea one year old in Costa Rica
(Elsevier, 2016)Short-rotation woody plantations have been recently established in Costa Rica and Gmelina arborea has gained popularity The present work assesses tree diameter and height, biomass distribution, specific gravity, green ... -
Callogenesis and cell suspension establishment of tropical highland blackberry (Rubus adenotrichos Schltdl.) and its microscopic analysis
(Springer, 2016)Blackberries are fruits produced worldwide, with 25 % of their production centered in Mexico, Central and South America. Tropical highland blackberry is a fruit that can potentially enhance human health, due to their high ... -
Characterisation of pellets made from oil palm residues in Costa Rica
(Journal of Oil Palm Research, 2016)Presently, there are around 67 000 ha of oil palm (Elaeis guineensis) in Costa Rica. The resulting post-harvest residues are not being used currently. These residues can be employed for generation of heat by means of ... -
Industria de bioinsumos de uso agrícola en Colombia
(2015)Bio-products are primarily produced by using plant growthpromoting bacteria. This group of microorganisms is composed of different genera with the capability to stimulate plant growth increasing their productivity and ... -
Análisis prospectivo de los bioinsumos agrícolas en Colombia: una consulta a expertos
(Revista Colombiana de Biotecnología, 2015)Productivity and sustainability of agriculture in Colombia can be influenced positively through the use of biodiversity for the production of bioinoculants. They were analyzed in the medium and long term, the future scenarios ... -
Enraizamiento de vitroplantas de membrillo (Cydonia oblonga) por medio de inmersión temporal automatizada y su aclimatación
(Revista Brasileira de Fruticultura, 2015)El membrillo (Cydonia oblonga) es un frutal no tradicional en Costa Rica que presenta propiedades médicas y nutricionales, sin embargo la lentitud del crecimiento y enraizamiento dificulta obtener poblaciones homogéneas ... -
Wood characterization of adult clones of Tecnona grandis growing in Costa Rica
(CERNE, 2015)Tectona grandis is an important wood in the commercial market due to its excellent workability, durability and aesthetic characteristics. Therefore, it is important to improve the conditions of reproduction and development ... -
Micropropagación masiva de Stevia Rebaudiana Bertoni en sistemas de inmersión temporal
(Revista Cultivos Tropicales, 2015)Stevia rebaudiana Bertoni, familia Asteraceae, es conocida como “yerba dulce” por poseer un edulcorante natural. Sus propiedades provienen de la presencia de glicósidos diterpenos denominados esteviósidos y rebaudiósidos ... -
Inventarios de gases de efecto invernadero de las escuelas primarias de Belén, Heredia, Costa Rica Greenhouse gases produced by primary schools in Belén, Heredia, Costa Rica
(Cuadernos de Investigación UNED, 2015)There is no published information on greenhouse gas emision in public schools of Costa Rica. Using as reference the national voluntary standard INTE / ISO 12-01-06: 2011 I measured emissions in three primary schools: ... -
Valoración ambiental para la generación de un modelo participativo de educación no formal
(2015)The purpose of this article is to establish a diagnosis of the wetlands of Bañó and Negros based on the analysis and characterization of the social, economic and natural spheres in order to understand the causes of physical, ... -
Diferencias en la vivienda, albergues turísticos, lenguaje, el parentesco y percepción del turismo en las comunidades Bribri con diferentes niveles de aislamiento geográfico (Talamanca, Costa Rica)
(Cuadernos de Investigación UNED, 2015)Tourism is an economic, social and cultural activity that exerts positive and negative influences on communities and ecosystems where it is implemented. Tourism is occurring in the Talamanca valley communities of Yorkín, ... -
Molecular characterization of two accessions of Cydonia oblonga
(Revista Agronomía Mesoamericana, 2015)El objetivo de la presente investigación fue evaluar el uso del espaciador plastídico trnH-psbA y la secuencia codificante matK como posibles marcadores para la caracterización molecular de dos accesiones de membrillo (C. ...