Author: Nigel J Chaffey
Publisher: CRC Press
ISBN: 1134485069
Category : Science
Languages : en
Pages : 801
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Book Description
Trees are a major component of the biosphere and have played an important part in the world's history and culture. With the modern challenges of global warming and dwindling fossil fuel reserves, trees, and in particular their wood, can provide solutions. Unfortunately, too little is known about the biology of these plants, due largely to a lack of
Author: Martin H. Zimmermann
Publisher: Elsevier
ISBN: 1483261689
Category : Nature
Languages : en
Pages : 579
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Book Description
The Formation of Wood in Forest Trees covers the proceedings of the second symposium held under the auspices of the Maria Moors Cabot Foundation for Botanical Research, conducted in Harvard Forest in Petersham, Massachusetts on April 15-19, 1963. The book focuses on the aspects of tree growth, such as the chemistry and submicroscopic morphology of wood and the effects of the environment on growth. The selection first offers information on the evolution of cambium in geologic time; a model for cell production by the cambium of conifers; and structure and development of the bark in dicotyledons. The text then ponders on the aspects of ultrastructure of phloem, stem structure in arborescent monocotyledons, and structure and formation of the cell wall in xylem. The publication takes a look at the general chemistry of cell walls and distribution of the chemical constituents across the walls and ultraviolet and fluorescence optics of lignified cell walls. The text also examines the role of endogenous hormones in cambial activity and xylem differentiation; indirect effects of environment on wood formation; and influence of external pressure on the differentiation of cells and tissues cultured in vitro. The selection is a dependable reference for readers interested in the formation of wood in forest trees.
Author: Harvard University. Maria Moors Cabot Foundation for Botanical Research
Publisher:
ISBN:
Category : Cambium
Languages : en
Pages : 588
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Book Description
Author: Barry Gardiner
Publisher: Springer Science & Business Media
ISBN: 3642108148
Category : Nature
Languages : en
Pages : 281
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Book Description
The book is a fundamental reference source on reaction wood for wood scientists and technologists, plant biologists, silviculturists, forest ecologists, and anyone involved in the growing of trees and the processing of wood. It brings together our current understanding of all aspects of reaction wood, and is the first book to discuss both compression wood and tension wood. Trees produce reaction wood to maintain the vertical orientation of their stems and the optimum angle of each branch. They achieve this by laying down fibre cell walls in which differences in physical and chemical structure from those of normal fibres are expressed as differential stresses across the stem or branch. This process, while of obvious value for the survival of the tree, causes serious problems for the utilisation of timber. Timber derived from trees containing significant amounts of reaction wood is subject to dimensional instability on drying, causing twisting, bending and splitting. It is also difficult to work as timber, and for the pulp and paper industry the cost of removing the increased amount of lignin in compression wood is substantial. This has both practical and economic consequences for industry. Understanding the factors controlling reaction wood formation and its effect on wood structure is therefore fundamental to our understanding of the adaptation of trees to their environment and to the sustainable use of wood. The topics covered include: -Morphology, anatomy and ultrastructure of reaction wood -Cell-wall polymers in reaction wood and their biosynthesis -Changes in tree proteomes during reaction wood formation -The biomechanical action and biological functions of reaction wood - Physical and mechanical properties of reaction wood from the scale of cell walls to planks -The detection and characterisation of compression wood -Effects of reaction wood on the performance of wood and wood-based products - Commercial implications of reaction wood and the influence of forest management on its formation
Author: Tadashi Nobuchi
Publisher:
ISBN:
Category : Trees
Languages : en
Pages : 216
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Book Description
Author: Rubin Shmulsky
Publisher: John Wiley & Sons
ISBN: 111942643X
Category : Science
Languages : en
Pages : 504
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Book Description
The updated seventh edition of the classic text on wood science and forestry The seventh edition of Forest Products and Wood Science: An Introduction offers a fully revised and updated review of the forest products industry. This classic text contains a comprehensive review of the subject and presents a thorough understanding of the anatomical and physical nature of wood. The authors emphasize its use as an industrial raw material. Forest Products and Wood Science provides thorough coverage of all aspects of wood science and industry, ranging from tree growth and wood anatomy to a variety of economically important wood products, along with their applications and performance. The text explores global raw materials, the increasing use of wood as a source of energy and chemicals and environmental implications of the use of wood. This edition features new material on structural composites, non-structural composites, durability and protection, pulp and paper, energy and chemicals, and global raw materials. This seventh edition of the classic work: Contains new information on a variety of topics including: structural composites, non-structural composites, durability and protection, pulp and paper, energy and chemicals and global raw materials Includes a fully revised text that meets the changing needs of the forestry, engineering, and wood science academics and professionals Presents material written by authors with broad experience in both the private and academic sectors Written for undergraduate students in forestry, natural resources, engineering, and wood science, as well as forest industry personnel, engineers, wood-based manufacturing and using professionals, the seventh edition of Forest Products and Wood Science updates the classic text that has become an indispensable resource.
Author:
Publisher:
ISBN:
Category : Juvenile wood
Languages : en
Pages : 48
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Book Description
To satisfy the increasing demand for forest products, much of the future timber supply will be from improved trees grown on managed plantations. This fast-grown resource will tend to be harvested in short age rotations and will contain higher proportions of juvenile wood than that of current harvests. In anticipation of this resource, definitive information is needed on the influence of juvenile wood on lumber properties so that grading rules and the associated allowable design stresses can be modified as needed. This document reports the results of an extensive review of the literature on juvenile wood in southern pines. This report defines and discusses the extent, occurrence, and characteristics of juvenile wood. It reviews the effects that environment and silviculture have on the amount of juvenile wood produced. Finally, the impacts that juvenile wood has on mechanical properties were quantified. The results of this quantification are significant to all producers of fast-grown plantations. Research has clearly shown that juvenile wood will have a detrimental impact on allowable design stresses for visually graded lumber. It is critical that methods are developed to more carefully manage fast-grown plantation wood for its most efficient use. This review should serve as an overall collection of knowledge pertaining to juvenile wood research in southern pines and should help in the decision-making efforts to improve seedling selection techniques and silvicultural practices to maximize the potential for fast-grown plantations of southern pines.
Author: Noel Streatfeild
Publisher: Persephone Books
ISBN: 9781906462086
Category : Bereavement
Languages : en
Pages : 0
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Book Description
"First published in 1945 by Collins"--Copyright page.
Author: Kishan Gopal Ramawat
Publisher: CRC Press
ISBN: 1466597143
Category : Medical
Languages : en
Pages : 658
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Book Description
Forest trees cover 30% of the earth's land surface, providing renewable fuel, wood, timber, shelter, fruits, leaves, bark, roots, and are source of medicinal products in addition to benefits such as carbon sequestration, water shed protection, and habitat for 1/3 of terrestrial species. However, the genetic analysis and breeding of trees has lagged behind that of crop plants. Therefore, systematic conservation, sustainable improvement and pragmatic utilization of trees are global priorities. This book provides comprehensive and up to date information about tree characterization, biological understanding, and improvement through biotechnological and molecular tools.
Author: Henry H. Gibson
Publisher:
ISBN:
Category : Timber
Languages : en
Pages : 734
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Book Description
