نتایج جستجو برای: wood products

تعداد نتایج: 327504  

2017

The forest sector represents a large source of income for Canadians. In 2013, the forest sector contributed $19.2 billion or 1.25% of Canada’s GDP [1]. Harvested wood products (HWPs), which are manufactured using wood harvested from forests, have also made headlines recently, with the world’s tallest wood building at 18 storeys having completed construction at the University of British Columbia...

2011

From time to time, wood plays an important role in solving criminal cases. Wood samples vary in size and can range from trees and logs to pieces as small as individual wood fibers. Botanists can easily identify trees. especially when the leaves, flowers. or fruits are present. Using standard techniques. wood technologists. foresters, and wood anatomists can generally identify logs, lumber, wood...

2006
HAROLD L. MITCHELL

This paper presents a concept of wood quality. The heart of the concept is: Quality is the resultant of physical and chemical characteristics possessed by a tree or a part of a tree that enable it to meet the property requirements for different end products. In other words, the intrinsic quality of wood evaluated solely in terms of its suitability for various products or end uses. A number of t...

2003
Michael H. Freeman Todd F. Shupe Richard P. Vlosky

Preservative treatment of wood has a long history in the United States and throughout the world. Even the early settlers to the New World in the 17th century used wood preservatives to protect homes and other structures. The treated wood industry in the United States is evolving as new products emerge, technology advances, and environmental concerns increase. Recently, chromated copper arsenate...

2004
Timothy G Townsend Brajesh Dubey Helena Solo-Gabriele

The management of discarded treated wood products upon disposal is one of the many factors that should be considered when evaluating a new wood preservative or when comparing wood preservatives as part of a life cycle assessment. Future environmental ramifications of disposal, as well as regulatory requirements and costs, must be assessed and weighed. This paper presents an overview of the fact...

2011
JOHN R. OBST

Pyrolysis-gas chromatography-mass spectrometry was performed on milled wood lignins (MWLs) and wood samples. Among the major pyrolysis products identified from loblolly pine lignin were guaiacol, 4-methylguaiacol, 4-vinylguaiacol, vanillin, coniferal­ dehyde, and coniferyl alcohol. White oak lignin pyrolysis products also included guaiacol, 4-methylguaiacol, and vanillin and addi­ tionally 2,6-...

1999
Mark A. Dietenberger

References 17–13 ire safety is an important concern in all types of construction. The high level of national concern for fire safety is reflected in limitations and design requirements in building codes. These code requirements are discussed in the context of fire safety design and evaluation in the initial section of this chapter. Since basic data on fire behavior of wood products are needed t...

2016
Evin Danisman Bruschweiler Pascal Wild Cong Khanh Huynh Dessislava Savova-Bianchi Brigitta Danuser Nancy B. Hopf

Exposure to wood dust, a human carcinogen, is common in wood-related industries, and millions of workers are occupationally exposed to wood dust worldwide. The comet assay is a rapid, simple, and sensitive method for determining DNA damage. The objective of this study was to investigate the DNA damage associated with occupational exposure to wood dust using the comet assay (peripheral blood sam...

Journal: :Energy Procedia 2017

Journal: :Annals of Forest Science 2016

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