Lumber grade recovery from a second-growth pine operation in California
نویسندگان
چکیده
منابع مشابه
Influences of wood preservation, lumber size, and weather on field leaching of red pine lumber.
Alkaline copper quaternary (ACQ) is a widely used wood preservative. This study evaluated leachate volume generation and contaminant leaching from ACQ-treated lumber during rainfall events in comparison to untreated lumber. The influences of wood preservation with ACQ, lumber size, and weather on leachate generation ratio and contaminant concentrations in wood leachate were investigated with fo...
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A case study was conducted in a 50-yr-old bottomland oak stand in central Alabama to investigate the relationship between epicormic branches and lumber grade and value in willow oak (Quercus phellos L.). The stand had been thinnedfrom below 7-10 yr earlier, resulting in a wide variety of epicormic branch conditions on the residual trees. A sample of 41 willow oak trees was selected before the s...
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Whipple’s operation can be carried out either under general anaesthesia or continuous epidural anaesthesia with sedation. We report three cases that were managed successfully and we found that the combination of lumbar epidural analgesia with sedation is safer and beneficial as compared to those who undergo Whipple’s operation under general anaesthesia. For the last three decades epidural analg...
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The presence of knots or heartwood influences the amount and composition of volatile organic compound (VOC) emissions associated with drying of southern pine lumber. Experimental kiln charges of lumber containing 0 to 5% of knot volume gave VOC emissions ranging from 2.86 to 4.25 lb of carbonldry ton of wood. Studies of emissions from sapwood and knots showed that knots contain about ten times ...
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The reusability of decommissioned treated wood is primarily dependent on the residual strength of the wood after service. Determining the residual strength can provide useful information for structural design and reuse of the decommissioned treated wood. This study evaluated the residual strength of decommissioned chromated copper arsenate–treated utility pole wood. Eleven decommissioned southe...
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ژورنال
عنوان ژورنال: Hilgardia
سال: 1953
ISSN: 0073-2230
DOI: 10.3733/hilg.v22n10p367