Index Catalog // ScholarsArchive@OSU

Fungal colonization of Douglas-fir sapwood

Creator:: Kang, Sung-Mo
Abstract:: The fungi that cause mold and stain of freshly sawn lumber result in millions of dollars in losses to the forest products industry. Stain and mold are typically prevented by either kiln drying or by application of a topical fungicide. While these treatments are effective, kiln drying is costly and...
Resource Type:: Masters Thesis
Full Text:: , 1998. Title: Fungal Colonization of Douglas-fir Sapwood. Abstract approved: Vl , , f'" ." , Jeffrey

Isolation of protoplasts from selected wood degrading fungi and their uses in studying fungicidal action

Creator:: Chen, Rui, 1963-
Abstract:: Studies of physiological effects of fungicides on fungi are critical for understanding modes of action and mechanism of resistance; however, studies are difficult to perform on filamentous fungi because of the inability to produce homogeneous a biological system using a mass of mycelium. Moreover, the presence of rigid cell wall...
Resource Type:: Masters Thesis

Decomposition of Basamid in Douglas-fir heartwood

Creator:: Forsyth, Paul Griffin
Abstract:: Basamid^R (3,5-dimethy1-1,3,5,2H-tetrahydrothiadiazine- 2-thione) is a crystalline powder used as a soil sterilant. This fumigant acts in soil by decomposing to methylisothiocyanate (MITC), the primary active ingredient, as well as hydrogen sulfide, methylamine, and formaldehyde. In wood, Basamid decomposes too slowly to be efficacious against decay fungi unless amended with various...
Resource Type:: Dissertation

The effects of tree position and silvicultural practices on treatability of Douglas-fir lumber

Creator:: Hong, Seungdo
Abstract:: In spite of the lack of accurate information about the treatability of western wood species with waterborne wood preservatives, consumption of these products continues to increase. Western wood species, notably Douglas-fir, are notoriously difficult to treat with waterborne systems, yet there is relatively little data on the effects of wood...
Resource Type:: Masters Thesis
Full Text:: and Silvicultural Practices on Treatabilitv of Douglas-fir Lumber Abstract approved: if U.J. Morrell

Fungitoxicities of NaMDC decomposition products to decay fungi colonizing Doulgas-fir and ponderosa pine wood

Creator:: Canessa, Edwin
Abstract:: Metham sodium or NaMDC is one of the four major soil fumigants that are currently registered for controlling internal decay of wood products in use. Fumigants are used primarily in utility poles but are also applied to piling, timbers and other large wood members. NaMDC must decompose to fungitoxic compounds...
Resource Type:: Masters Thesis

Development of an Accelerated Method for Assessing Decay of Wood Plastic Composites (WPC's)

Creator:: Silva Guzman, Jose Antonio
Abstract:: This study examined the decay resistance of the pine and maple components of wood plastic composites (WPC' s) of varying thicknesses exposed on several culture media to wood decay fungi under laboratory conditions. The ability of malt agar extract (MEA), potato dextrose agar (PDA), amended basal salts, sawdust (maple and...
Resource Type:: Dissertation
Full Text:: approved: Jeffrey J. Morrell Barbara L. Gartner This study examined the decay resistance of the pine and

Effects of best management practices on copper migration from Douglas-fir lumber treated with ACZA, CA or ACQ

Creator:: Ye, Min
Abstract:: Copper is the most common ingredient in waterborne preservatives and provides excellent activity against most fungi and insects. However, issues associated with copper migration from treated wood have created increasing concerns about potential risks to non-target organisms in surrounding environments, especially those in sensitive aquatic environments. Various Best Management Practices...
Resource Type:: Masters Thesis
Full Text:: Copper Migration from Douglas-fir Lumber Treated with ACZA, CA or ACQ Abstract approved

The effects of supercritical CO₂ on the bending properties and treatment defects of four refractory wood species

Creator:: Anderson, Matthew E.
Abstract:: It is difficult to treat the heartwood of many wood species with liquid preservatives using conventional liquid processes. Supercritical fluids (SCF) used as carriers of preservatives to impregnate refractory wood species may be an attractive alternative to conventional liquid carriers. While SCF impregnation has many potential advantages, some wood species...
Resource Type:: Masters Thesis
Full Text:: ;....,.,,,.a.+-=:t-.1 ---.uf--71'-- ___ , __________ _ I L.-.!...L....1 T.:>fl"r.:>u T l\tf nrr~ll Robert J

Reassessment of Grading Criteria with Respect to the Flexural Properties of Douglas-fir Crossarms

Creator:: Anderson, Christopher H.
Abstract:: Wood plays a key role in modern electrical infrastructure; crossarms and power poles utilize the high strength to weight ratio, availability and low cost of wood to facilitate the access of power to millions of Americans. However, wood presents a variety of challenges as a material. In structural applications, one...
Resource Type:: Masters Thesis
Full Text:: with Respect to the Flexural Properties of Douglas-fir Crossarms Abstract approved

Environmental effects on heartwood extractive content and their consequences for natural durability in Douglas-fir and western redcedar

Creator:: Taylor, Adam McVaugh, 1969-
Abstract:: Heartwood can have properties that are distinct from sapwood, including resistance to insect and microbial attack. Despite the practical importance of heartwood formation in trees, a review of the literature revealed that little was known about the effects of environmental factors on heartwood quality or how variations in heartwood properties...
Resource Type:: Dissertation
Full Text:: may influence natural durabi!ity. Growth rate variations in six Douglas-fir trees coincided with

ScholarsArchive@OSU

Fungal colonization of Douglas-fir sapwood

Isolation of protoplasts from selected wood degrading fungi and their uses in studying fungicidal action

Decomposition of Basamid in Douglas-fir heartwood

The effects of tree position and silvicultural practices on treatability of Douglas-fir lumber

Fungitoxicities of NaMDC decomposition products to decay fungi colonizing Doulgas-fir and ponderosa pine wood

Development of an Accelerated Method for Assessing Decay of Wood Plastic Composites (WPC's)

Effects of best management practices on copper migration from Douglas-fir lumber treated with ACZA, CA or ACQ

The effects of supercritical CO₂ on the bending properties and treatment defects of four refractory wood species

Reassessment of Grading Criteria with Respect to the Flexural Properties of Douglas-fir Crossarms

Environmental effects on heartwood extractive content and their consequences for natural durability in Douglas-fir and western redcedar

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