Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"Wood properties"”.
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Improvement of Oil Palm Wood Properties Using Bioresin
Die ausWestafrika stammende Ölpalme (Elaeis guineensis Jacq) ist zur populärsten Kulturpflanze in Südostasien geworden. Als Haupterzeugnisse dieser Pflanze gelten die Öle der Früchte und der Fruchtkerne. Die weltweite Nachfrage nach diesen beiden Haupterzeugnissen nimmt sehr rasch zu. Ursache …
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Effects of Genetic Modification and Drying Stresses on Wood Properties.
North Carolina State University Theses Forest Biomaterials.
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Modeling longleaf pine (Pinus palustris Mill) wood properties using near infrared spectroscopy
… demonstrated model development for important wood properties using near infrared spectroscopy (NIR); it considered the effect of outside sources of error, and the ability of NIR to measure fiber morphology. Strength, stiffness, and density were successfully modeled from wood samples taken …
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Influence of site, clone, age, and growth rate on wood properties of three Populus X Euramericana clones
… in selected anatomical, physical and mechanical properties of three Populus x euramericana (Dode) Guinier hybrid clones grown on two dissimilar sites in Hungary. Six 15 years old trees from three clones on one site and six 10 years old trees from two clones on the other site were sampled at …
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Stand structure development effects on wood quality of Melina (Gmelina arborea roxb.)
… thinning treatments on Melina (Gmelina arborea) wood quality and tree architecture in the North Coast of Colombia. 27 plots under forest management regimes and age classes were evaluated. Split-plot experimental design, stepwise regression and ANOVA were developed to analyze the data. The results …
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A two-stage thermal modification of wood
… stability and biological durability of wood. An undesired side effect is the reduction of mechanical properties of wood, mainly due to the high temperatures involved (150-280°C). In this thesis the effects of heat treatment on wood properties are discussed in relation to anatomical and …
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Strength Properties of Juvenile and Mature Wood of Twelve Families of Loblolly Pine (Pinus Taeda L.)
<p>The wood mechanical properties of progeny from twelve open-pollinated parent trees were examined. Six families were from parents which had high wood specific gravity and six were from parents which had low wood specific gravity. Thirty-two-year-old trees, that had been planted at Many, …
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Forest dynamics at regional scales: predictive models constrained with inventory data
… suggests that scaling theories based on wood properties do not explain differences between species, but climatic factors, and in particular hydraulic limitations, do. In Chapter Five I parameterise a model of recruitment in Spanish forests using Approximate Bayesian Computation, a novel …
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Characterization of signaling pathways underlying key growth and development processes in Populus trichocarpa
… source-sink relationships to optimize this woody crop species for specific agricultural traits such as increased growth rate, stress tolerance and/or improvements in overall biomass accumulation. We targeted specific tissues such as xylem, where alterations in the relationship of source and …
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Dynamic modeling of branches and knot formation in loblolly pine (Pinus taeda L.) trees
… makes it possible to include additional wood properties in the simulation system, allowing linkage with industrial conversion processes (e.g. sawing simulation). This integrated modeling system should promote further research to obtain necessary data on crown and branch dynamics to …
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Wood cell wall modification with hydrophobic molecules
Wood is used for many applications because of its excellent mechanical properties, relative abundance and as it is a renewable resource. However, its wider utilization as an engineering material is limited because it swells and shrinks upon moisture changes and is susceptible to degradation by …
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Organosilicon compounds as potential wood protecting agents
Wood is very diverse and has specific features making it easily distinguishable from other materials. Due to its properties it can be applied both inside and outside, making it a rewarding material to work with. However, when applied outside it is liable to weathering, inducing changes to the wood, …
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Variabilidade radial e longitudinal de propriedades da madeira de angico-vermelho (Anadenanthera peregrina (L.) Speg.)
O objetivo deste trabalho foi determinar a variabilidade nas direções radial e longitudinal de algumas propriedades da madeira de angico-vermelho (Anadenanthera peregrina (L.) Speg.), procedente de uma área de mata nativa, localizada no campus da Universidade Federal de Viçosa, Estado de Minas …