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Filtering by: Creator Jeffreys, Bradford J. Remove constraint Creator: Jeffreys, Bradford J. Advisor Morrell, Jeffrey J. Remove constraint Advisor: Morrell, Jeffrey J. Degree Level Master's Remove constraint Degree Level: Master's

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  • 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

  • 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:
    my God for sending me my major professor, Jeffrey J. Morrell and my committee who were C.J. Calder

  • 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:
    to my major professor Dr. Jeffrey J. Morrell for his unlimited guidance and encouragement during

  • 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:
    : ______________________________________________________ Jeffrey J. Morrell Copper is the most common ingredient in waterborne preservatives and

  • The Effect of Sill Height on Decay in Air-Seasoning Crossties

    Creator:
    Rogers, Leon R.
    Abstract:
    The sustainable use of wood for rail ties requires chemical treatment to increase service life and maintain structural integrity. Treatment can only be applied after lengthy air-seasoning to reduce moisture content in wood, but seasoning leaves ties exposed to attack by decay fungi for up to a year. One factor...
    Resource Type:
    Masters Thesis
    Full Text:
    : ___________________________________ Jeffrey J. Morrell The sustainable use of wood for rail ties requires chemical

  • Performance of copper based biocides in potentially copper tolerant soils

    Creator:
    Chang, Andrew B.
    Abstract:
    Copper is an excellent biocide which has a long history of usage for protecting wood from deterioration, but some organisms have developed tolerance for this chemical. Copper tolerance among wood decay fungi is a poorly understood phenomenon that is gaining importance as cofactors such as arsenic and chromium are removed...
    Resource Type:
    Masters Thesis
    Full Text:
    Biocides in Potentially Copper Tolerant Soils. Abstract approved: Jeffrey J. Morrell Copper is an

  • Controlling biodeterioration of western wood species with over- the-counter wood preservatives

    Creator:
    Newbill, Mark A.
    Abstract:
    Over-the-counter (OTC) wood preservatives can provide wood with both a moisture barrier and fungicidal protection against biodeterioration, yet there is little comparative data on the performance of these preservatives. In this study, the potential of various low-toxicity, OTC preservatives was evaluated on five western wood species, western red cedar (Thuja...
    Resource Type:
    Masters Thesis
    Full Text:
    of Western Wood Species With Over-the-Counter Wood Preservatives Abstract approved: rey J. Morrell

  • The phytosanitation of solid wood packaging materials using wood preservatives

    Creator:
    Schauwecker, Christoph F.
    Abstract:
    New species introductions have been associated with the movement of people for thousands of years. For instance, horses were introduced into North America by Spanish explorers, while pigs were introduced by the Polynesians into many Pacific islands long before the establishment of permanent European settlements. Both of these species introductions...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: ______________________________________________________________ Jeffrey J. Morrell

  • Development of a test method for assessing water repellency and derived physical stability of preservative systems for railroad ties

    Creator:
    Beck, H. Greeley
    Abstract:
    Resistance to moisture uptake is an important attribute of some wood preservatives and can help reduce moisture cycling that leads to the development of deep checks. While the potential for preservative treatments to help improve wood/moisture interactions is acknowledged, there are no tests that specifically evaluate this performance parameter. Checking...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________________________ Jeffrey J. Morrell Resistance to moisture uptake is an important attribute of some wood

  • Potential for Using Boron Compounds with Differing Water Solubilities in Pastes for Remedial Treatment of Utility Poles

    Creator:
    Uysal, Selim
    Abstract:
    Boron and boron compounds have been long used for pressure treatment, dip-diffusion, and remedial treatments of wood because of their proven efficacy against fungi and insects. These materials are especially attractive because their high water solubility promotes deeper penetration into wood. Other useful properties of boron include its neutral pH,...
    Resource Type:
    Masters Thesis
    Full Text:
    . Abstract approved: ______________________________________________________ Jeffrey J. Morrell