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Mostrando ítems 21-36 de 36
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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 ... -
Optical performance of finished and unfinished tropical timbers exposed to ultraviolet light in the field in Costa Rica
(Wood Material Science & Engineering, 2016)This study evaluated wood color change (ΔE*) and the surface quality in 10 tropical wood species painted with three finishes (composed of wax and polyurethane). Two weathering conditions were tested: natural weathering ... -
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 ... -
Evaluation of wood properties from six native species of forest plantations in Costa Rica
(Bosque, 2016)This study details information about physical, chemical and mechanical properties, drying, preservation and workability of wood from Cordia alliodora, Dipteryx panamensis, Enterolobium cyclocarpum, Hieronyma alchorneoides, ... -
Ganho genético esperado para melina (Gmelina arborea roxb.) em cordoba (Colômbia)
(Revista Arvore, 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 ... -
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 ... -
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 ... -
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, ... -
Kiln drying behavior utilizing drying rate of lumber from six fast-growth plantation species in Costa Rica
(Drying Technology, 2016)The objective was to study the effect of the drying time and moisture content variations on the drying rate during kiln drying. The moisture content is a good predictor of the variation in drying rate; to determine the ... -
Characteristics and properties of torrefied biomass pellets from Gmelina arborea and Dipterix panamensis at different times
(Revista Chapingo, Serie Ciencias Forestales y del Ambiente, 2016)Torrefaction and pelletizing were studied in the generation of energy from lignocellulosic residues to increase the energy properties of the biomass. The aim of this study was torrefied sawdust from Gmelina arborea and ... -
Production and quality analysis of pellets manufactured from five potential energy crops in the Northern Region of Costa Rica
(Biomass and Bioenergy, 2016)Modifications to a pellet manufacturing process must be made based on the characteristics of raw material used. The purpose of this work was to determine the alternations required to a wood pellet manufacturing process ... -
Population status of the tree Sacoglottis holdridgei (Humiriaceae) at Isla del Coco National Park, Costa Rica
(Revista de Biología Tropical, 2016)Isla del Coco is the only oceanic island in the Eastern Pacific with humid tropical climate. Its forests have a particular structure with a unique array of plant species and high endemism. There are few studies on the ... -
Surface chemical and color characterization of juvenile tectona grandis wood subjected to steam-drying treatments
(2016)The color of Tectona grandis wood is an attribute that favors its commercialization, however, wood color from fast-growth plantation trees is clear and lacks uniformity. The aim of this work is to characterize steamed ... -
Current perspectives on forest recovery trends in Guanacaste, Costa Rica
(International Forestry Review, 2019)The main goal of this study was to evaluate whether the trends in the recovery of forest cover in Guanacaste continued during the past decade and to evaluate if the socioeconomic drivers of recovery have been altered. Our ...