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Mostrando ítems 31-40 de 96
Evaluación cuantitativa, espacial y temporal de los recursos hídricos de la cuenca del Río Agua Caliente mediante la construcción y análisis de balances hídricos
(Instituto Tecnológico de Costa Rica. Escuela de Ingeniería en Construcción, 2016)
La cuenca del Río Agua Caliente, localizada en la provincia de Cartago, Costa Rica, fue
evaluada mediante la construcción y análisis de balances hídricos. Para ello, los modelos
hidrológicos HBV-TEC y SWAT fueron aplicados ...
IBA efficiency on mini-cutting rooting from teak (Tectona grandis Linn F.) clones
(Revista Arvore, 2016)
This study aimed to evaluate IBA efficiency in mini-cuttings rooting based on four Tectona
grandis clones. Vegetative samples were collected in a hydroponic mini-clonal hedge in Verde Novo reforestation
company at Colider, ...
Effects on density, shrinking, color changing and chemical surface analysis through FTIR of Tectona grandis thermo-treated: Density, shrinking, color changing and chemical analysis by FTIR of the thermally-treated teak wood
(Forest Sciences, 2016)
Thermal-treatment wood is used as an option to improve durability of wood in recent years. This study
evaluated the effect of temperature in thermally treated Tectona grandis wood in density, shrinking, color
changing ...
Evaluación del saneamiento ambiental sostenible en las zonas atendidas por ASADAs en el Cantón de Paraíso
(Instituto Tecnológico de Costa Rica. Vicerrectoría de Investigación y Extensión (VIE). Escuela de Química. Centro de Investigación en Protección Ambiental (CIPA), 2016)
En varias regiones de Costa Rica, ya se registran condiciones de escasez de agua, las cuales irán en
aumento por el efecto del crecimiento poblacional, más aún, si se suma el efecto de la variación del
clima el panorama ...
Diseño, Resistencia y Valores Estructurales de cerchas prefabricadas con Madera de Plantación
(Instituto Tecnológico de Costa Rica. Vicerrectoría de Investigación y Extensión (VIE). Escuela de Ingeniería Forestal. Centro de Investigación en Innovación Forestal (CIF), 2016)
The objective of this research is design two pratt framing trusses for two span, 6 m and 9 m, and fabricated with Gmelina arborea and Hieronyma alchorneoides wood, using two types of fastener (nails and screws). As a ...
Initial evidence to validate an instructional design-derived evaluation scale in higher education programs
(Springer, 2016-02-26)
Instructional design has been a key strategy in ensuring the quality of higher education; therefore, it is essential to evaluate its effects on learning processes through the use of tools that comply with defined technical ...
Biopulp from pineapple leaf fiber produced by colonization with two white-rot fungi: Trametes versicolor and Pleurotus ostreatus
(BioResources, 2016)
Trametes versicolor and Pleurotus ostreatus were used for the biopulping from pineapple leaf fiber (PALF). PALF substrate was subjected to T. versicolor for 2 to 6 weeks and to P. ostreatus for 4 to 8 weeks. The yields, ...
Synthesis, properties, and two-dimensional adsorption characteristics of 5-amino[6]hexahelicene
(Willy, 2016)
A convergent synthesis of racemic 5-amino[6]hexahelicene
is described. Cross-coupling reactions are used to
assemble a pentacyclic framework, and a metal-catalyzed
ring-closure comprises the final step. The enantiomers ...
Experiences of educational use of technologies a case of facebook, google plus and the use of blogs
(Proceedings - 2016 11th Latin American Conference on Learning Objects and Technology, LACLO, 2016)
This workshop considers to share some experiences of educational practice of technologies used in English courses at the Technological Institute of Costa Rica, known in Spanish by its abbreviation (ITCR) throughout three ...
An impedance spectroscopy ASIC for low-frequency characterization of biological samples
(Scopus, 2016)
This paper describes the design and testing of an ASIC for impedance spectroscopy of biological samples at
frequencies up to 40 kHz. The circuit is designed in the 350 nm AMS H35B4 technology and enables the
measurement ...