Pine Wood
Mostrando 1-12 de 65 artigos, teses e dissertações.
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1. MECHANICAL AND PHYSICAL PROPERTIES OF WOOD/POLYETHYLENE COMPOSITE REINFORCED WITH TIO2 NANOPARTICLES
ABSTRACT Wood plastic composite was fabricated using high density polyethylene and pine wood fiber. The effect of addition of TiO2 nanoparticles at different weight fractions (0%, 1%, 3%, and 5%) on some properties of the composite was examined. The experimental composites were tested for bending strength, tensile strength, Izod impact strength, thickness sw
CERNE. Publicado em: 2020-12
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2. CONSTRUCTION AND TESTING OF GLUED LAMINATED TIMBER FRAMES FOR USE IN LAYING POULTRY HOUSES
ABSTRACT This study aimed to present a solution in glued laminated timber to replace frame structures built in reinforced concrete and metallic structure, which are common in agricultural buildings in western Paraná such as those destined to laying poultry house building by agricultural cooperatives. Structural behavior of frames build from Araucaria angust
Eng. Agríc.. Publicado em: 2020-04
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3. PLANT RICHNESS AND LIFE FORM DIVERSITY ALONG VEGETATION AND FOREST USE GRADIENTS IN NORTHWESTERN PATAGONIA OF ARGENTINA
ABSTRACT The imbalace between the increase in the demand and the decrease in the supply of products from natural forests, partly explains the on-going development of exotic tree plantations. In northwestern Patagonia of Argentina, Pinus ponderosa (Pinaceae) afforestation plays a key role in ameliorate degraded soils, but may also reduce biodiversity. The eco
CERNE. Publicado em: 20/12/2019
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4. Efeitos da estabulação sobre o trato respiratório de equinos em dois tipos diferentes de camas e a pasto
RESUMO As afecções do sistema respiratório são a segunda causa de queda de desempenho e afastamento dos equinos do esporte ou trabalho, as quais estão atrás somente das desordens musculoesqueléticas. A estabulação e a alimentação à base de fenos predispõem os equinos à inalação de grande número de agentes irritantes às vias aéreas. No intu
Arq. Bras. Med. Vet. Zootec.. Publicado em: 13/12/2019
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5. BRIQUETTES QUALITY PRODUCED WITH THE MACAUBA EPICARP (Acrocomia aculeata) AND Pinus sp. WOOD
RESUMO A macaúba (Acrocomia aculeata) é uma palmeira oleaginosa de alto valor econômico pela sua grande produtividade e pelas amplas possibilidades de aproveitamento das diferentes partes da planta. Esta palmeira é uma das espécies mais promissoras para a produção de biodiesel, e, durante o seu uso, há geração de grande quantidade de resíduos. O o
Rev. Árvore. Publicado em: 25/11/2019
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6. Painéis de pínus e bagaço de cana empregando-se dois adesivos para uso na construção civil
Resumo O presente trabalho objetivou produzir e avaliar painéis aglomerados empregando-se partículas de bagaço de cana-de-açúcar (Saccharum officinarum) e de pínus (Pinus taeda, Pinus elliottii), comparando-se a eficiência de dois adesivos, ureia-formaldeído e poliuretano derivado do óleo de mamona. Os painéis foram preparados com 60% de partícula
Ambient. constr.. Publicado em: 03/10/2019
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7. REPETITIVE MOTION AND POSTURAL ANALYSIS OF MACHINE OPERATORS IN MECHANIZED WOOD HARVESTING OPERATIONS
ABSTRACT The objective of this study was to evaluate operators’ posture and repetitive motions in the mechanized wood harvesting operations, aiming comfort, safety, and health of forest operators. The study was carried out in the clearcutting of pine stands located in Paraná State, Brazil. Data were obtained in tree cutting operations with feller buncher
CERNE. Publicado em: 09/09/2019
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8. KRAFT LIGNIN AS AN ADDITIVE IN PINE AND EUCALYPTUS PARTICLE COMPOSITION FOR BRIQUETTE PRODUCTION
RESUMO O objetivo deste trabalho foi avaliar as propriedades de briquetes produzidos com diferentes proporções de partículas de madeira de pinus e eucalipto, bem como caracterizar o potencial de uso da lignina kraft como aditivo na composição destes briquetes para a geração de energia. Os tratamentos diferenciaram-se na proporção de mistura de part�
Rev. Árvore. Publicado em: 13/06/2019
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9. Effect of Log Length on Forestry Loading and Unloading
ABSTRACT This study aimed to technically evaluate loading and unloading with different wood lengths . Data used were obtained from log harvesting areas of a forestry company in southern Brazil, on operations with loblolly pine logs. The study addressed the analysis of time and motion, being divided into loading, unloading, mooring and unmooring. Four treatm
Floresta Ambient.. Publicado em: 04/04/2019
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10. Tree Growth and Nutrient Dynamics in Pine Plantations in Southern Brazil
ABSTRACT For the development of nutrient budget models to recommend lime and fertilizers for agricultural and forestry crops, curves of plant growth and nutrient accumulation are required. Information about how nutrients are partitioned between the different plant organs is also necessary, but still scarce for pine in Brazil. This study evaluated the growth,
Rev. Bras. Ciênc. Solo. Publicado em: 04/12/2017
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11. Investigation on chemical composition and optimization of essential oil obtainment from waste Pinus taeda L. using hydrodistillation
ABSTRACT: The extraction of essential oils obtained by the hydrodistillation of needles/twigs waste of Pinus taeda L. was optimized by applying response surface methodology (RSM), with 24 full factorial design, in order to improve oil essential production, and aggregate value to the production chain of pine wood. Through the model it was possible to ascertai
Braz. arch. biol. technol.. Publicado em: 07/06/2016
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12. Efeito do tratamento térmico nas propriedades químicas, físicas e mecânicas em elementos estruturais de Eucalipto citriodora e Pinus taeda / Thermal rectification effect on the mechanical, chemical and physical properties in structural elements of Eucalyptus citriodora and Pinus taeda
O tratamento térmico da madeira (ou termorretificação) é realizado com o aquecimento da madeira em faixas de temperaturas inferiores à carbonização, até 280ºC. O objetivo desta tecnologia é melhorar as propriedades da madeira e, desta forma, proporcionar a obtenção de produtos com maior valor agregado. Neste trabalho, avaliou-se o comportamento e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/11/2012