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Biosynthesis of Wood Components
1997Chemical constituents of wood are classified into major components consisting of cell wall materials, and minor components extractable with solvents (wood extractives). The former, components of cell walls and intercellular layers, amount to 90–95% of oven-dry wood. Extractives occur mainly, albeit not exclusively, in the cell lumen and special tissues
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Components of wood products groups
2015The important breakdowns of the major groups of primary forest products are diagrammed below. In addition, many sub-items are further divided into softwood or hardwood. These are: all the roundwood products; sawnwood; veneer sheets; and plywood. Items that do not fit into listed aggregates are not shown.
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Fungal degradation of wood components
Pure and Applied Chemistry, 1981A survey is given of the microorganisms involved in the degradation of dead plant material. The white-rot fungi, which can degrade all the major wood components, have been discussed in detail and their way of attacking wood has been studied by scanning electron microscopy as well as by transmi ssion electron microscopy.
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Aging and fossilization of wood and its components
Wood Science and Technology, 1991Aging of wood begins with the cutting of a tree. The subsequent changes of the wood substance proceed very slowly and depend on environmental conditions. In a hot, dry desert climate wooden objects and cellulose textiles are preserved for several millenia, whereas their degradation is accelerated by conditions which favor the attack of microorganisms ...
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Update for combustion properties of wood components
Fire and Materials, 2002AbstractThe combustion properties of various biomass and wood materials from various references and from our laboratory were reanalysed. The net heat of combustion for cellulosic materials was found to be 13.23 kJ/g times the ratio of stoichiometric oxygen mass to fuel mass, ro, regardless of the material composition. Bomb calorimeter data for original,
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Hemicelluloses as Recalcitrant Components for Saccharification in Wood
2010Cellulose is a linear polymer consisting of more than 2,000 1,4-β-glucopyranosyl residues. The glucosyl residues form intramolecular hydrogen bonds at O3–O5′ and O6–O2′. Therefore, each glucosyl residue is bound to its neighbors by three bonds consisting of one covalent bond at C1β–C4′ and two hydrogen bonds at O3–O5′ and O6–O2′.
Takahisa Hayashi, Rumi Kaida
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Electrical impedance testing of wood components
2005This paper describes how electrical impedance spectroscopy (EIS) is an electrical measurement technique in which spectral and model analyses are used. In the test, electrodes are used to induce changing electric field into the material and the responses are evaluated. Numerous successful applications include wood moisture gradient test, corrosion test,
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Microbial and enzymatic degradation of wood and wood components
Comparative Biochemistry and Physiology Part A: Physiology, 1991openaire +2 more sources
Solid foams from wood components
2011Novel sustainable means to replace partly or totally synthetic polymers in light, solid foamy material applications are currently search for. To elucidate the potential of wood derived components as raw material in structural foams, the effect of wood fibres, nanocellulose and nanoparticle lignin on solid polymer foams was studied.
Suurnäkki, Anna +5 more
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