Search

Abstract An aging electricity distribution system and reduced availability of naturally durable tropical hardwoods in Australia will combine in the next decade to produce a major shortage of poles. One [...]

Abstract The potential for moisture sorption by boron and fluoride rods following application of rods to wood to affect subsequent chemical diffusion was investigated in small Douglas-fir blocks conditioned to [...]

Abstract A number of high-profile invasive species introductions have been associated with solid wood packaging materials (SWPM). The United Nations Food and Agriculture Organization currently recommends fumigation or heat treatment [...]

Abstract The potential for using cinnamon oil as an antimold and stain compound was investigated on ponderosa pine sapwood. This material is available as a food grade additive and offers [...]

Abstract The potential for using sequential soak treatments of sodium fluoride and copper sulfate was explored using ponderosa pine sapwood cubes. While copper and fluoride were readily sorbed by the [...]

Abstract Wood-plastic composites are generally presumed to be inherently more resistant to moisture uptake than solid wood, but there is little data on the relative rates of moisture uptake in [...]

Abstract The effect of drying conditions on gas permeability and preservative treatability was assessed on western hemlock lumber. Although there were no differences in gas permeability between lumber dried at [...]

ABSTRACT Sections of Douglas-fir poles were used to assess the ability of boron and fluoride to diffuse from sodium fluoride and fluoride/boron rods. In general, chemical levels in the wood [...]

J.J. MORRELL * ABSTRACT The effects of glycol compounds on borate distribution (as sodium borates) were investigated using Douglas-fir heartwood blocks conditioned to 30 or 60 percent moisture content (MC). [...]

J.J. MORRELL (*) ABSTRACT The ability of one biological control agent and selected chemical formulations to prevent microbial discoloration of freshly sawn lumber was evaluated on hem-fir and Douglas-fir wood [...]

J.J. MORRELL (*) R. SAM WILLIAMS (*) ABSTRACT Mildew resistance, water repellency, and overall finish appearance were evaluated for 32 deck finishes on western redcedar (Thuja plicata D. Donn.) and [...]

Abstract Mold and stain fungi can be easily controlled by kiln-drying, but even this material can be rewetted during shipping and storage, allowing fungi to colonize the wood. The potential [...]

Abstract Wood/plastic composites tend to be more resistant to moisture uptake and are promoted as being immune to moisture. Laboratory studies, however, have shown that small samples experience substantial losses [...]

Abstract The potential of 17 hydroxylamine derivatives as wood preservatives was assessed on ponderosa pine sapwood blocks exposed to one of two decay fungi: Gloeophyllum trabeum or Trametes versicolor. Weight [...]

Abstract Large quantities of smaller diameter materials are available in the overstocked forests of eastern Oregon and Washington, but the costs of removing these materials and the long distances from [...]

J.J. MORRELL [*] ABSTRACT The ability of fungi to survive in western red cedar utility poles through the thermal treatment process was explored by removing increment cores from 200 poles [...]

J.J. MORRELL [+] ABSTRACT Preservative treatment can be an excellent barrier against fungal, insect, and marine borer attack. Fabricators, however, often disrupt this barrier during piling installation, creating avenues for [...]

J.J. MORRELL [+] ABSTRACT The potential for migration of copper, zinc, and arsenic from Douglas-fir lumber treated with ammoniacal copper zinc arsenate (ACZA) using Best Management Practices (BMPs) was assessed [...]

MARK MANKOWSKI [+] J.J. MORRELL [+] ABSTRACT The incidence of wood-destroying organisms in homes was surveyed in Oregon. Decay fungi were the most common wood-destroying organisms, except in the drier, [...]

Abstract The decay resistance of China-fir (Cunninghamia lanceolata) was evaluated in several tests using white- and brown-rot fungi in an American Wood Preservers' Association soil-block test. Although there was some [...]

After scanning electron microscopy indicated that the infrabuccal pockets of carpenter ants (Camponotus vicinus) contained numerous yeast-like cells, yeast associations were examined in six colonies of carpenter ants from two locations in Benton County in western Oregon. Samples from the infrabuccal-pocket contents and worker ant exoskeletons, interior galleries of each colony, and detritus and soil around the colonies were plated on yeast-extract/ malt-extract agar augmented with 1 M hydrochloric acid and incubated at 25 C. Yeasts were identified on the basis of morphological characteristics and physiological attributes with the BIOLOG®microbial identification system. Yeast populations from carpenter ant nest material and material surrounding the nest differed from those obtained from the infrabuccal pocket. Debaryomyces polymorphuswas isolated more often from the infrabuccal pocket than from other material. This species has also been isolated from other ant species, but its role in colony nutrition is unknown.