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Creator:: Morrell, Jeffrey J.
Abstract:: The amounts of treated wood present at a wood recycling center in western Oregon were surveyed over a 10-year period. Treated wood was found at 106 of 112 inspections, but the levels never exceeded 2 percent of the volume present. The amount of treated wood averaged 0.15 percent of the...
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Full Text:: a Wood Recovery Center in Western Oregon Jeffrey J. Morrell Abstract The amounts of treated wood

Creator:: Ye, Min and Morrell, Jeffrey J.
Abstract:: The potential for preservative migration from treated wood exposed in or above aquatic environments has become a major concern in some parts of the United States. Best management practices (BMP) were designed to decrease the potential environmental footprint of treated wood, but there are few studies assessing the efficacy of...
Resource Type:: Article
Full Text:: -mail:jesie329958@hotmail.com Jeffrey J. Morrell*{ Professor Department of Wood Science & Engineering Oregon

Creator:: Fatima, Rushda and Morrell, Jeffrey J.
Abstract:: The potential effects of plant derived oils on survival of dampwood termite (Zootermopsis augusticollis) workers was explored on western white pine sapwood blocks. All of the oils rapidly affected protozoa in the hindgut of termite workers and protozoa loss was closely followed by worker mortality. The effects were most rapid...
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Full Text:: INHIBIT DAMPWOOD TERMITE (Zootermopsis augusticollis) ACTIVITY Rushda Fatima 1, Jeffrey J. Morrell 2

Creator:: Long, Brady and Morrell, Jeffrey J.
Abstract:: Preservative treatments are required whenever glued laminated beams are exposed outdoors. Treatments can be either water-based systems applied to individual laminations prior to layup or organic solvent–borne systems applied after the beams are fabricated. Water-based systems are not recommended for posttreatment because of concerns over checking and the potential for...
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Full Text:: Appearance and Flexural Properties of Douglas-Fir Glued Laminated Beams Brady Long Jeffrey J. Morrell

Creator:: Scouse, Adam, Kamke, Frederick A., and Morrell, Jeffrey J.
Abstract:: The potential for using pretreatment with cinnamon leaf oil or juniper foliage oil to improve the durability of viscoelastic thermal compression (VTC)–treated hybrid poplar was explored in a field termite test and a laboratory mold test. The addition of oils prior to VTC processing had variable effects on resistance to...
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Full Text:: Viscoelastic Thermal Compression–Treated Hybrid Poplar Adam Scouse Frederick A. Kamke Jeffrey J. Morrell

Creator:: Gartner, Barbara L., Morrell, Jeffrey J., Freitag, Camille M., and Spicer, Rachel
Abstract:: Heartwood durability of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco var. menziesii) was studied as a function of vertical and radial position in boles of trees with a wide range of leaf area/sapwood area ratios. Six 34- year-old trees were harvested from each of three plots established 14 years before: very dense,...
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Full Text:: Douglas-fir trees from a young stand Barbara L. Gartner, Jeffrey J. Morrell, Camille M. Freitag, and

Creator:: Garcia, Carlos M. and Morrell, Jeffrey J.
Abstract:: Associations between the golden metallic beetle, Buprestis aurulenta L., and wood-destroying fungi were explored with adult beetles collected from log decks. A variety of fungi were isolated from the beetle bodies by four methods. A total of 863 isolations were made from 59 females and 21 males. There was no...
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Full Text:: aurulentaL., and wood-destroying fungi were explored with adult beetles collected from log decks. A variety

Creator:: Morrell, Jeffrey J. and Love, Connie S.
Abstract:: Red oak, Douglas-fir, and ponderosa pine lumber was treated with a silicon/paraffinic system to assess the ability of the treatment to limit dimensional changes and moisture uptake during changes in temperature or relative humidity. The treatment initially had little effect on either property, but the magnitude of weight gain and...
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Full Text:: Stability of Red Oak, Douglas-Fir, and Ponderosa Pine Connie S. Love Jeffrey J. Morrell Abstract Red oak

Creator:: Gonzalez, June Mitsuhashi and Morrell, Jeffrey J.
Abstract:: Assessing the impact of fungal decay in wood structures poses a major challenge for building inspectors. Although models have been developed to predict degradation rate of building components in varying climatic conditions, most are hampered by the lack of fundamental data on effects of fungal attack on engineering properties. Developing...
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Full Text:: : jmitsuhashi@yahoo.com Jeffrey J. Morrell*{ Professor Department of Wood Science & Engineering Oregon State

Creator:: Love, Connie S. and Morrell, Jeffrey J.
Abstract:: The effect of metal end plates on reducing checking of pentachlorophenol-treated Douglas-fir crossarms was evaluated over 13 wet–dry cycles. Check development was variable over the first three to four cycles, and then steadily increased for both plated and nonplated ends of arms; however, both the number of checks and the...
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Full Text:: Reducing Checking of Pentachlorophenol- Treated Douglas-Fir Crossarms Connie S. Love Jeffrey J. Morrell

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