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Filtering by: Creator Stander, Jeffrey M. Remove constraint Creator: Stander, Jeffrey M. Has journal sim Wood and Fiber Science Remove constraint Has journal sim: Wood and Fiber Science

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  • Decomposition of metham sodium to methylisothiocyanate as affected by wood species, temperature, and moisture content

    Creator:
    Morrell, Jeffrey J.
    Abstract:
    The effect of various wood characteristics on decomposition of metham sodium to methylisothiocyanate in sixteen North American and Southeast Asian hardwoods and softwoods was investigated. While marked differences were noted in the degree of decomposition among some species, the relationship between decomposition and lignin content, extractive levels, wood pH, or...
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    nitrogen as the car- rier gas (30 cm3/min). A glass column (2-m by 2-mm inner diameter) packed with 10

  • Durability of a changing western redcedar resource

    Creator:
    Freitag, Camille M. and Morrell, Jeffrey J.
    Abstract:
    The heartwood of western redcedar (Thuja plicuta) is known for its natural resistance to fungal attack, but some users of western redcedar utility poles have suggested that its durability may be diminished as suppliers begin to harvest trees from younger stands. The decay resistance of western redcedar samples from the...
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    Camille M. Freitag Senior Research Associate and Jeffrey J. Morrell'f Associate Professor

  • Laboratory decay resistance of preservative-treated red alder

    Creator:
    Mitchoff, M. E. and Morrell, Jeffrey J.
    Abstract:
    Alder represents an abundant but underutilized resource that has little natural resistance to decay. Treated alder might be used for stakes, posts, or other nonstructural applications. The performance of alder treated with chromated copper arsenate (CCA), copper 8 quinolinolate, zinc naphthenate (ZN), or thiocyanomethylthiobenzothiazole (TCMTB) was assessed in soil block...
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    ALDER' M. E. Mitchof and J. J. Morrell Undergraduate Student and Assistant Professor Department of

  • Fungal staining of ponderosa pine sapwood: Effects of wood preconditioning and bioprotectants

    Creator:
    Morrell, Jeffrey J. and Sexton, Camille M.
    Abstract:
    Differences in stain susceptibility were evaluated on sterile and unsterile samples of freshly sawn, frozen and thawed, or oven-dried and rewetted ponderosa pine sapwood. Samples treated with sterile medium or with medium inoculated with either Pseudomonas putida or Bacillus subtilis were inoculated with selected wood-staining fungi. In general, fresh unsterile...
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    PRECONDITIONING AND BIOPROTECTANTS Jefrey J. Morrell Assistant Professor and C:amille M. Sexton Senior

  • Fungi colonizing redwood in cooling towers: Identities and effects on wood properties

    Creator:
    Morrell, Jeffrey J. and Smith, Susan M.
    Abstract:
    Heartwood from coastal redwood [Sequoia sempervirens (D. Don.) Endl.] is very durable and is often used untreated in harsh environments, such as cooling towers of power or chemical processing plants. Wood in this environment is often attacked by soft rot fungi. Some wood users attempt to bolster protection by including...
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    EFFECTS ON WOOD PROPERTIES1 Jefrey J. Morrell and Susan M. Smith Assistant Professor and Research

  • Production of fungal protoplasts from selected wood-degrading fungi

    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...
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    with older hyphae. Magnesium sulfate and mannitol (0.5 M) performed comparably well as osmotic

  • Copper, chromium, and arsenic levels in soils surrounding posts treated with chromated copper arsenate (CCA)

    Creator:
    Morrell, Jeffrey J. and Huffman, Jacob
    Abstract:
    The levels of copper, chromium, and arsenic in soil surrounding CCA-treated posts and beneath CCA-treated stakes were investigated at a plot near Gainesville, Florida. Metal levels were elevated in soil immediately adjacent to the treated wood, but decreased with distance away or depth. Mean extractable arsenic levels ranged from 1.74...
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    SURROUNDING POSTS TREATED WITH CHROMATED COPPER ARSENATE (CCA) Jeffrey J. Morrell† Professor Department of

  • Assessing Biocide Effects on Protoplasts of Wood Decay Fungi

    Creator:
    Rui, Chen and Morrell, Jeffrey J.
    Abstract:
    Hyphal fragments and protoplasts of two wood-degrading fungi, Postia placenta and Trametes versicolor, were used to examine the effects of two fungicides, copper sulfate and azaconazole, on fungal health (as measured by oxygen consumption, glucose utilization, potassium levels, cell regeneration, and copper uptake). Although both cell systems responded to the...
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    actively growing cultures of Postia placenta (Fr.) M. Lars. & Lomb. (Isolate Madison FP 94267R), U.S

  • Effect of treatment postfixation practices on copper migration from alkaline-copper-treated Douglas-fir lumber

    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...
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    -mail:jesie329958@hotmail.com Jeffrey J. Morrell*{ Professor Department of Wood Science & Engineering Oregon

  • Patterns of fungal attack in wood-plastic composites following exposure in a soil block test

    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...
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    617), Postia placenta (Fr.) M. Larsen & Lomb. (Madison 698), or Woljiporia cocos (Wolf) Ry- varden