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Creator:: Rui, Chen and Morrell, Jeffrey J.
Abstract:: Studies of the effects of various chemicals on fungal growth are difficult to perform on filamentous fungi because of the difficulty of observing the protoplasm through the rigid hyphal wall, and because most activity occurs in the region near the hyphal tip. However, hyphae can be exposed to certain enzymes...
Resource Type:: Article
Full Text:: - duction from economically important wood decayers. In this report, protoplasts were produced from hyphae

Creator:: Schneider, Philip F., Freitag, Camille M., and Morrell, Jeffrey J.
Abstract:: Wood that is submerged in fresh water for long periods has increased permeability and other changed properties. Wood that is submerged in salt water may absorb considerable quantities of salts, which may render the wood resistant to microbial colonization. In this report, we describe decay tests on Douglas-fir sapwood and...
Resource Type:: Article
Full Text:: . In this report, we describe decay tests on Douglas-fir sapwood and heartwood after long-term

Creator:: Wang, Yu, Chang, Jianmin, Morrell, Jeffrey J., Freitag, Camille M., and Karchesy, Joseph J.
Abstract:: Bacillus subtilis and essential oils have been explored separately for their ability to limit colonization by wood stain and mold fungi, but neither approach has been completely effective. One alternative strategy would be to combine the bacterial biocontrol with one or more natural products extracts. In this report, the ability...
Resource Type:: Article
Full Text:: products extracts. In this report, the ability of combinations of B. subtilis B26 and 20 essential oils

Creator:: Jeihooni, Asghar, Krahmer, Robert L., and Morrell, Jeffrey J.
Abstract:: The effect of pretreatment of Douglas-fir flakes with CCA-C, borate, and azaconazole on properties of flakeboard was studied. Flakes had higher retention levels of CCA-C and borate in their ends than in their centers. The distribution of chemicals was uniform in panels, which indicates that the chemicals did not migrate...
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Full Text:: showed no deleterious cfl'ect o n strength. Keywords: Flakeboard, Douglas-fi~, C('4, borate

Creator:: Winandy, Jerrold E. and Morrell, Jeffrey J.
Abstract:: This report describes the relationship of incising-induced strength loss in bending as a function of preservative treatment and incising pattern, density, and depth of penetration for various machine stress-rated (MSR) grades of full-size 2 by 4 Douglas-fir, Hem-Fir, and Spruce-Pine-Fir (South) dimension lumber. This study may represent a worst-case "incising...
Resource Type:: Article
Full Text:: report describes the relationship of incising-induced strength loss in bending as a function of

Creator:: Smith, Susan M., Demessie, E. Sahle, Morrell, Jeffrey J., Levien, Keith L., and Ng, Harry
Abstract:: Adverse effects on mechanical properties from using a supercritical fluid (SCF) to increase preservative penetration of refractory woods were evaluated by treating small ponderosa pine sapwood specimens with supercritical carbon dioxide at 64 combinations of temperatures (35 to 80 C), pressure (1,000 to 4,000 psig), and time (0.5 to 2...
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Full Text:: ). Temperature, pressure, and time had no significant effect on MOR, there were interacting effects of these

Creator:: Sexton, Camille M., Corden, Malcolm E., and Morrell, Jeffrey J.
Abstract:: Impact bending and breaking radius were used to measure loss in toughness caused by basidiomycetes isolated from wood. Small test pieces were used to accelerate testing. Wide differences were found among, and sometimes within, the 26 species tested. Brown-rot fungi tended to cause greater losses than white-rot fungi, but no...
Resource Type:: Article
Full Text:: -rot fungi tended to cause greater losses than white-rot fungi, but no consistent difference was found

Creator:: Morrell, Jeffrey J., Sinha, Arijit, Clauson, Milo, and Love, Connie S.
Abstract:: Routine inspection of wood utility poles to detect internal decay involves drilling holes at or about the ground line. While these holes are useful for detecting internal decay, their presence raises concern among engineers about their potential effects on pole flexural properties. The effect of inspection holes on flexural properties...
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Full Text:: inspection holes had no significant effect on flexural properties, indicating that inspection does not

Creator:: Morrell, Jeffrey J.
Abstract:: The resistance of three naturally durable heartwood species and a stranded giant bamboo product to fungal and termite (Coptotermes formosanus) attack was evaluated at a test site located near Hilo, Hawaii. Merbau (Intsia bijuga or I. palembanica) and ipe (Tabebuia spp.) were both exceptionally resistant to fungal and termite attack,...
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Full Text:: slightly less resistant to degradation. The presence of heartwood on western juniper samples had no

Creator:: Mankowski, Mark and Morrell, Jeffrey J.
Abstract:: The ability of white and brown rot fungi to colonize wood-plastic composites was investigated by measuring weight loss and anatomical changes. Three composite materials were evaluated. The material containing a 70/30 wood-high density polyethylene (HDPE) mixture was most susceptible to fungal attack, while two different 50/50 wood-HDPE composites experienced little...
Resource Type:: Article
Full Text:: , while two different 50150 wood-HDPE composites experienced little or no attack. Scan- ning electron

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