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Book Age and Thinning Effects on Wood Properties of Red Spruce Picea Rubens Sarg

Download or read book Age and Thinning Effects on Wood Properties of Red Spruce Picea Rubens Sarg written by Michael P. Wolcott and published by . This book was released on 1987 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ten overstory red spruce were selected from a thinned stand and 10 from an unthinned stand. Average age of sample trees was approximately 80 years. Specific gravity reached a maximum at age 53 in the thinned stand and age 72 in the unthinned stand, after which it remained relatively constant. Stiffness reached a maximum at ages 35 and 50, and bending strength at ages 41 and 54; both remained relatively constant with further increases in age. Stiffness showed the largest relative difference between juvenile and mature wood, 22%, and specific gravity the smallest difference, 8%. Thinning did not adversely affect any of the properties, even though the width of some growth rings was increased by three to four times. These results suggest that (1) growth of mature red spruce stands can be increased by thinning without affecting wood physical properties, and (2) intensive management practices designed to shorten the rotation age may lead to stands that have not begun to produce mature wood before they are harvested. These short-rotation stands will contain a higher percentage of juvenile wood than stands presently being harvested, which means that pulp yields will decrease and the material will be less suitable for structural lumber.

Book Technical Bulletin

Download or read book Technical Bulletin written by and published by . This book was released on 1991 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Wood Property age Relationships of Natural and Plantation grown Red Pine

Download or read book Wood Property age Relationships of Natural and Plantation grown Red Pine written by Robert K. Shepard and published by . This book was released on 1992 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Miscellaneous Report

Download or read book Miscellaneous Report written by and published by . This book was released on 1982 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Proceedings

Download or read book Proceedings written by and published by . This book was released on 1986 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Wood and Fiber Science

Download or read book Wood and Fiber Science written by and published by . This book was released on 1994 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Aerial Age Weekly

Download or read book Aerial Age Weekly written by and published by . This book was released on 1918 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Masters Theses in the Pure and Applied Sciences

Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer. This book was released on 1987-10-31 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, SIld disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna and broader dissemination. tional publishing house to assure improved service Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 30 (thesis year 1985) a total of 12,400 theses titles from 26 Canadian and 186 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work.

Book U S Forest Service Research Paper SO

Download or read book U S Forest Service Research Paper SO written by and published by . This book was released on 1968 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Research Accomplishments

Download or read book Research Accomplishments written by and published by . This book was released on 1974 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Forest Service Research Accomplishments

Download or read book Forest Service Research Accomplishments written by and published by . This book was released on 1973 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Forest Products and Wood Science

Download or read book Forest Products and Wood Science written by Rubin Shmulsky and published by John Wiley & Sons. This book was released on 2011-05-09 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new edition of this book offers a fully revised and updated review of the forest products industry. This important text covers the full spectrum of the subject, basing itself in a thorough understanding of the anatomical and physical nature of wood and providing a special emphasis on its use as an industrial raw material. Forest and biomass researchers are provided with comprehensive coverage of all aspects of wood science and industry, ranging from tree growth and wood anatomy to a variety of economically important wood products.

Book Masters Theses in the Pure and Applied Sciences

Download or read book Masters Theses in the Pure and Applied Sciences written by W. H. Shafer and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis seminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac tivity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volume were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 24 (thesis year 1979) a total of 10,033 theses titles from 26 Canadian and 215 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work. While Volume 24 reports these submitted in 1979, on occasion, certain universities do report theses submitted in previous years but not reported at the time.