Results 211 to 220 of about 109,305 (261)
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Australian Forestry, 1949
SUMMARY In this paper an attempt has been made to answer for the forester and the timber user the question embodied in the title. The information available in the literature and in the laboratory records of the Division of Forest Products on the compression wood of Gymnosperms and the tension wood of Angiosperms has been summarized with particular ...
H. E. DADSWELL, A. B. WARDROP
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SUMMARY In this paper an attempt has been made to answer for the forester and the timber user the question embodied in the title. The information available in the literature and in the laboratory records of the Division of Forest Products on the compression wood of Gymnosperms and the tension wood of Angiosperms has been summarized with particular ...
H. E. DADSWELL, A. B. WARDROP
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2014
Introduction.- Morphology, Anatomy and Ultrastructure of Reaction Wood.- Cell Wall Polymers in Reaction Wood.- The Molecular Mechanisms of Reaction Wood Induction.- Biomechanical Action and Biological Functions.- Physical and Mechanical Properties of Reaction Wood.- Detection and Grading of Compression Wood.- Effects of Reaction Wood on the Performance
Gardiner, Barry +3 more
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Introduction.- Morphology, Anatomy and Ultrastructure of Reaction Wood.- Cell Wall Polymers in Reaction Wood.- The Molecular Mechanisms of Reaction Wood Induction.- Biomechanical Action and Biological Functions.- Physical and Mechanical Properties of Reaction Wood.- Detection and Grading of Compression Wood.- Effects of Reaction Wood on the Performance
Gardiner, Barry +3 more
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An Investigation of the Reaction of Epoxides with Wood
Journal of Wood Chemistry and Technology, 1999Abstract The reaction of wood with two functionalised epoxides, allyl glycidyl ether (AGE) and glycidyl methacrylate (GMA), has been studied. For the reaction with whole wood samples of Scots Pine (Pinus sylvestris), maximum weight percent gains (WPG's) of 20% (GMA) and 7% (AGE) were obtained using pyridine as a solvent/catalyst.
Nihat S Cetin, Callum A S Hill
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Epichlorohydrin coupling reactions with wood
Wood Science and Technology, 1994Properties of wood can be improved by reacting chemicals with hydroxyl groups of wood cell wall polymers. To achieve this improvement in wood properties, bioactive compounds containing hydroxyl groups, such as pentachlorophenol, 3,5-dimethyl phenol, and 2-naphthol, can be reacted with epichlorohydrin to give corresponding glycidyl ethers.
R.M. Rowell, G.C. Chen
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Effects of Reaction Wood on the Performance of Wood and Wood-Based Products
2013Compression wood in softwoods and tension wood in hardwoods have properties, which adversely affect its usefulness for wood products. This chapter shows that reaction wood can be associated with many unsuitable wood properties. The results vary due to the fact that definitions about occurrence and severity of reaction wood are scarcely documented.
Rupert Wimmer, Marie Johansson
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On the heat of reaction in wood pyrolysis
Combustion and Flame, 1973A mathematical model describing the essential processes taking place in wood pyrolysis has been utilized with experimental data on wood cylinders to deduce the value of the heat of reaction of wood. The model includes mechanisms for transient conduction, internal convection, variable properties, Arrhenius decomposition, and heat of reaction. Using this
Hsiang-Cheng Kung, Ashok S. Kalelkar
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Wood Bonding by Surface Reaction
The Journal of Adhesion, 1983Abstract Chemical bonding is a technique which attempts to involve chemically the surface of wood in the joint formation process. In this research, an attempt has been made to improve overall board properties while at the same time make the whole process more practical from a large-scale application point of view.
William E. Johns, Ahmad Jahan-latibari
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Reaction of wood with inorganic salts
Holz als Roh- und Werkstoff, 1998Wood samples and veneers of Hevea brasiliensis (Rubber wood) and Acacia auriculaeformis treated with aqueous solutions of chromium trioxide, ferric chloride and ferric nitrate were studied for water repellency and their reaction with wood constituents.
K. K. Pandey +2 more
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The nature of reaction wood. VIII. The structure and differentiation of compression wood
Australian Journal of Botany, 1964The cell wall organization of tracheids of natural and chemically induced compression wood of Pinus radiata and Actinostrobus pyramidalis has been shown to be the same, and is similar to that established in previous studies of natural compression wood. In the secondary wall only two layers were present. In the second of these there was a well-developed
AB Wardrop, GW Davies
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Secondary Reactions and the Heat of Pyrolysis of Wood
Energy Technology, 2020Since its first estimation in 1909, the heat of pyrolysis of biomass has been found to range from endothermic to exothermic, with the latter attributed to secondary reactions that condense secondary char. Herein, the heats of primary and secondary reaction for pine are isolated using a new method to account for the radiative heat loss discrepancy ...
Jim R. Jones +2 more
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