Wood Basic Density
Mostrando 1-12 de 50 artigos, teses e dissertações.
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1. DEVELOPING NEAR INFRARED SPECTROSCOPIC MODELS FOR PREDICTING DENSITY OF Eucalyptus WOOD BASED ON INDIRECT MEASUREMENT
ABSTRACT The objective of this study was to establish multivariate models for the prediction of wood basic density with reference to the values of average density of trees and near infrared (NIR) spectra measured in the breast height. The wood basic density of 39 Eucalyptus clones was determined in the laboratory by means of the mean longitudinal positions o
CERNE. Publicado em: 20/12/2019
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2. Biomassa de espécies florestais para produção de carvão vegetal
Resumo Devido à alta demanda das empresas por geração de energia oriunda de fontes renováveis, o objetivo deste estudo foi analisar as propriedades da madeira e do carvão proveniente de três espécies florestais: Ceiba pentandra (L.) Gaertn. (Sumaúma), Guatteria sp. (Envirão) e Brosimum sp. (Mumuré). O material foi coletado na Empresa Rosa Madeireir
Ciênc. Florest.. Publicado em: 02/12/2019
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3. CHEMICAL AND ENERGETIC CHARACTERIZATION OF Eucalyptus grandis × Eucalyptus urophylla CLONES SUBJECT TO WIND DAMAGE
RESUMO Danos por ventos são frequentes em plantações florestais, e a utilização desta madeira pode minimizar os prejuízos causados. O objetivo foi avaliar a composição química e o potencial energético da madeira e carvão de árvores sujeitas a danos pelos ventos. Oito clones de Eucalyptus grandis × Eucalyptus urophylla com idade de dois anos fora
Rev. Árvore. Publicado em: 28/11/2019
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4. WOOD QUALITY OF Pinus patula Schltdl & Cham FOR THE PULP PRODUCTION
RESUMO O setor de polpa celulósica de fibra longa tem como base de suprimento as madeiras de Pinus taeda e P. elliottii e compete por essa matéria-prima com outros setores madeireiros. O estudo objetivou avaliar a qualidade da madeira de Pinus patula para a produção de polpa e papel. Árvores com 14 anos foram obtidas de um plantio localizado em Ponte Al
Rev. Árvore. Publicado em: 14/11/2019
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5. Production of briquettes using coconut and eucalyptus wastes
RESUMO Esta pesquisa analisou a produção e as características de briquetes compostos de resíduos de Cocos nucifera e da madeira de Eucalyptus pellita. Utilizou-se o delineamento inteiramente casualizado, com sete tratamentos e cinco repetições. Os tratamentos corresponderam às percentagens de resíduos de coco e de eucalipto, como segue: T1: 100% de r
Rev. bras. eng. agríc. ambient.. Publicado em: 14/10/2019
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6. Wood basic density effect of Eucalyptus grandis in the paper making
ABSTRACT The basic density is the main technical property of the wood due to the fact of the easy determination and correlation with the others wood properties. In this article, it was evaluated wood chips from a five-years-old Eucalyptus grandis in three different silvicultural treatments for pulp and paper production. First, a conventional kraft pulping wa
Matéria (Rio J.). Publicado em: 16/09/2019
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7. Estimation of the Basic Wood Density of Native Species Using Mixed Linear Models
ABSTRACT This paper aimed to estimate the basic density (DB) of the wood of Cerrado species using mixed linear models. For performing the DBH measurement, the sampling of 334 individuals was carried out. By keeping the Pilodyn apparatus in the DBH position, two measurements were made on opposite sides. Further, for determining DB, the trees were knocked down
Floresta Ambient.. Publicado em: 09/09/2019
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8. Environmental Effect on Growth and Characteristics of Eucalyptus Wood
ABSTRACT The objective of this work was to evaluate environmental effect on growth, wood basic density and anatomical characteristics of Eucalyptus grandis × Eucalyptus urophylla clones for pulp production. The studied clones were from 6.5-year-old plantations of Fibria Celulose company, located in two places: Nova Almeida (ES) and Posto da Mata (BA). The t
Floresta Ambient.. Publicado em: 29/07/2019
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9. Longitudinal and Transverse Variation in the Physical Properties of Wood Red Tauari
ABSTRACT The objective of this work was to study the fiber length variation, retractability and basic density, in the core-bark direction and along the heig of the red tauari wood (Cariniana micrantha Ducke). The stem was evaluated in the discs, from core to bark, corresponding to 0%, 25%, 50%, 75% and 100%. At the commercial height of the tree the evaluatio
Floresta Ambient.. Publicado em: 15/07/2019
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10. Agrupamento de espécies madeireiras da Amazônia com base em propriedades físicas e mecânicas
Resumo A procura intensa por essências madeireiras nativas consolidadas, que apresentam elevado uso, pode ocasionar a superexploração de espécies e diminuição do seu estoque na floresta. Uma alternativa para essa situação é a substituição dessas espécies por outras com propriedades da madeira semelhantes e com suficiente estoque de crescimento na
Ciênc. Florest.. Publicado em: 30/05/2019
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11. Behavior of Juvenile and Mature Eucalyptus cloeziana Wood Subjected to Drastic Drying
ABSTRACT This study aimed to evaluate the behavior of samples of juvenile and mature Eucalyptus cloeziana wood when subjected to the drying process, and the influence of the anatomy on that behavior. In order to do this, saturated specimens from this woods measuring 10 × 5 × 1 cm were subjected to drastic drying at 100 °C, where the drying rates and the e
Floresta Ambient.. Publicado em: 23/05/2019
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12. Neuro-fuzzy Hybrid System for Monitoring Wood Moisture Content During Drying
ABSTRACT The heterogeneous behavior of wood during drying is a process difficult to control. The objective of this study was to evaluate the accuracy of the neuro-fuzzy hybrid system for monitoring wood moisture during drying. Eucalyptus urophylla x Eucalyptus grandis samples (2 x 2 x 4 cm) were saturated and dried in climatic chamber for 15 days. Basic den
Floresta Ambient.. Publicado em: 04/04/2019