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Author: Lee Fred Hawley
Publisher:
ISBN:
Category : Wood
Languages : en
Pages : 36
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Book Description
Author: Lee Fred Hawley
Publisher:
ISBN:
Category : Wood
Languages : en
Pages : 36
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Book Description
Author: Christen Skaar
Publisher: Springer Science & Business Media
ISBN: 3642736831
Category : Technology & Engineering
Languages : en
Pages : 292
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Book Description
Wood is formed in an essentially water-saturated environment in the living tree, and the cell wall remains in this state until the water flow from the roots is interrupted, such as by felling the tree. The wood then begins to lose most of its moisture by drying, resulting in changes in most of its physical properties. These changes, and their relationship to the environment to which the wood is subsequently ex posed, are the subject of this book. The text consists of six chapters. The first chapter discusses cer tain empirical relationships between wood and water, methods of measuring wood moisture content, factors which affect its equilib rium moisture content, and the effect of moisture content on wood strength. The second chapter treats the thermodynamics of moisture sorption by wood, inc1uding enthalpy, entropy, and free energy changes. The third chapter discusses some of the theories which have been proposed to explain the sorption isotherms for hygroscopic ma terials such as wood. Chapter 4 considers hygroexpansion or the shrinking and swelling of wood associated with moisture change. Chapter 5 is concerned with how moisture moves through the cell wall of wood in response to both moisture and temperature gradients. The sixth and final chapter discusses the theoretical and practical aspects of the electrical resistance and dielectric properties of wood, in c1uding the principles involved in their application in electrical moisture meters.
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 102
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Book Description
Author: National Committee on Wood Utilization (U.S.)
Publisher:
ISBN:
Category : Lumber trade
Languages : en
Pages : 886
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Author: United States. Department of Agriculture
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 238
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Book Description
Author: David Leroy Yarnell
Publisher:
ISBN:
Category : Hydraulics
Languages : en
Pages : 1348
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Author: Earl Hazeltine Frothingham
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1142
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Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 276
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Author: Franz F.P. Kollmann
Publisher: Springer Science & Business Media
ISBN: 3642879284
Category : Technology & Engineering
Languages : en
Pages : 605
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Book Description
Modern forest products research had its start hardly fifty years ago. Today we are in a position to apply the title "wood science" to the field of wood technology that is based on scientific investigation, theoretical as well as experimental. It is this research that fosters new uses for wood as a raw material and that creates the foundation for new industries for the manufacture of wood-base materials such as plywood, laminated products, particle and fiber board and sand wich construction. Wood technology in its broadest sense combines the disciplines of wood anatomy, biology, chemistry, physics and mechanical technology. It is through this interdisciplinary approach that progress has been made in wood seasoning, wood preservation methods, wood machining, surfacing and gluing, and in the many other processes applied in its utilization. In 1936 the senior author published a book entitled, "Technologie des Holzes", which was a first approach to a universal reference book on wood technology. The first edition of Volume I of the Textbook of Wood Technology, co-authored by H. P. BROWN, A. J. P AN SHIN , and C. C. FORSAITH, was published in 1948. An indication of the rapid development of this field can be gained from the fact that the second edition of "Technologie des Holzes und der Holzwerkstoffe", completely revised, was needed by 1951. It contains 2233 pages compared with the 764 pages of the 1936 edition.
Author: Lorraine Joseph Markwardt
Publisher:
ISBN:
Category : Strength of materials
Languages : en
Pages : 132
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Book Description
