Escuela de Ingeniería Forestal: Envíos recientes
Mostrando ítems 61-80 de 112
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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 ... -
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 ... -
Fortalecimiento de las capacidades del sector industrial forestal a través de la transferencia y apropiación del conocimiento generado en proyectos de investigación del área de tecnología de productos forestales
(Instituto Tecnológico de Costa Rica. Vicerrectoría de Investigación y Extensión (VIE). Escuela de Ingeniería Forestal. Centro de Investigación en Innovación Forestal (CIF), 2017)El sector forestal en la última década ha mostrado cambios en su desarrollo, aspectos como sistemas productivos, tecnologías de producción y oferta de productos han variado significativamente, lo que hace necesario el ... -
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 ... -
Identificación de actividades futuras del Proyecto Atlas Digital de Costa Rica 2018
(Instituto Tecnológico de Costa Rica. Escuela de Ingeniería Forestal. Centro de Investigación en Innovación Forestal (CIF), 2017)El proyecto Atlas Digital nace hace 16 años, con el objetivo de actualizar y adaptar la información geográfica de Costa Rica a los avances en cartografía digital. Los resultados del proyecto Atlas Digital de Costa Rica ... -
Desarrollo de un modelo de producción de bambú guadua mediante la aplicación de técnicas silviculturales óptimas para la cuantificación del crecimiento y la capacidad de almacenamiento de carbono en plantaciones (Guadua angustifolia) en la Zona Sur de Costa Rica
(Instituto Tecnológico de Costa Rica. Escuela de Ingeniería Forestal. Centro de Investigación en Innovación Forestal (CIF), 2017)En Costa Rica, el manejo de Guadua angustifolia Kunth, no se ha visto estandarizado ni documentado de manera adecuada, donde la mayoría de las empresas, han venido controlando sus rodales de manera empírica y donde los ... -
Micropropagación de teca (Tectona grandis L.f)
(2005)Micropropagation of teak (Tectona grandis L.f.). Teak (Tectona grandis L.f.) is considered valuable due to the quality of its wood. The world level demand for the wood supported the establishment of commercial plantations. ... -
Evaluation of biodeterioration and the dynamic modulus of elasticity of wood in ten fast-growing tropical species in costa rica exposed to field testing
(Statny Drevarsky Vyskumny Ustav, 2015)In tropical regions, it is possible to produce a large variety of timber species in plantation conditions. However, wood from these trees has low natural durability. Biodeterioration and the dynamic modulus of elasticity ... -
Effects of thinning on diameter, heartwood, density and drying defects of gmelina arborea
(Universidade Federal de Sao Carlos, 2015)The effect of three levels thinning intensity in Gmelina arborea plantation on tree diameter, heartwood (diameter and percentage), wood density and drying defects (twist, crook, bow and check) was studied. Wood used for ... -
Effects of adding nano-clay (montmorillonite) on performance of polyvinyl acetate (PVAc) and urea-formaldehyde (UF) adhesives in Carapa guianensis, a tropical species
(Elsevier Ltd, 2015-06)The aim of this study was to improve the bond strength resistance of polyvinyl acetate (PVAc) and urea-formaldehyde (UF) adhesives modified with nano-clay (montmorillonite) with a tropical species of wood known to exhibit ... -
Effects of adding multiwall carbon nanotubes on performance of polyvinyl acetate and urea-formaldehyde adhesives in tropical timber species
(Hindawi Publishing Corporation, 2015)Multiwall carbon nanotubes (MWCNTs) functionalized with hydroxyl groups (MWCNTs-OH) have been incorporated into polyvinyl acetate (PVAc) and urea-formaldehyde (UF) adhesives utilized in tropical wood gluing. The Raman ... -
Application of the X-ray densitometry in the evaluation of the quality and mechanical properties of biomass pellets
(Elsevier, 2015-04)The use of the X-ray technique and the X-ray densitometry to determine pellet particle distribution and to understand the biomass compaction and its effects in pellet properties has been limited. The present work evaluates ... -
Landscape-scale controls on aboveground forest carbon stocks on the Osa Peninsula, Costa Rica
(Public Library of Science, 2015-06)Tropical forests store large amounts of carbon in tree biomass, although the environmental controls on forest carbon stocks remain poorly resolved. Emerging airborne remote sensing techniques offer a powerful approach to ... -
General, physical and mechanical properties, termites resistance and drying defects of lumber of Tectona grandis from plantations of different climatic and sites fertility condition
(Springer India, 2015-06)The influence of climatic and site fertility conditions affect wood quality from fast growing trees. The change in tree diameter, thickness of sapwood, heartwood percentage and bark and pith tissue, physical and mechanical ... -
The role of tropical dry forests for biodiversity, carbon and water conservation in the neotropics: lessons learned and opportunities for its sustainable management
(Springer-Verlag France, 2015-08)In this paper, we provide a comprehensive evaluation of the current regional literature associated with tropical dry forest (TDF) along three main axes: biodiversity, carbon and water conservation in the neotropics. Our ... -
Recommendations for the use of tree models to estimate national forest biomass and assess their uncertainty
(Springer-Verlag France, 2015-09)Three options are proposed to improve the accuracy of national forest biomass estimates and decrease the uncertainty related to tree model selection depending on available data and national contexts. Introduction: Different ... -
Brotación in vitro de brotes de teca (Tectona grandis L.f.)
(2012)Teak (Tectona grandis L. f.) is an exotic timber species introduced to Costa Rica for commercial plantations due to the high demand for its wood, rapid growth and high-quality. Initially the seed was use as the only planting ... -
Guidelines for documenting and reporting tree allometric equations
(Springer-Verlag France, 2015-09)Given the pressing need to quantify carbon fluxes associated with terrestrial vegetation dynamics, an increasing number of researchers have sought to improve estimates of tree volume, biomass, and carbon stocks. Tree ... -
Pellets Evaluation Made from Tropical-Climate Agricultural and Forestry Crops of Costa Rica with a Domestic Stove
(Springer Netherlands, 2015-12)The present study shows the results of the evaluation of the pellets made from two forestry crops and eight agricultural crops in Costa Rica by employing a 50 kW domestic stove. Methods: The following variables were ... -
Mineral content in relation to radial position, altitude, chemical properties and density of persian ironwood
(Universidade Federal de Sao Carlos, 2015)Persian ironwood (Parrotia persica) is native species from Iran and covers 10,54% of the commercial volume. Its wood structure and its chemical composition are affected by growth conditions. The aim of the study was to ...