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  • RC_51_11x17_booklet.pdf

    Creator:
    Morrell, Jeffrey J.
    Full Text:
    N C E M A N U A L: 2 01 2 E D IT IO N JE FF R E Y J . M O R R E LL R e se a rc h

  • Bioassaying wood preservatives with Aspergillus niger

    Creator:
    Morrell, Jeffrey J.
    Abstract:
    The bioassay with Aspergillus niger is a simple way of determining the presence and amount of pentachlorophenol or tributyltin oxide in wood, but it does not appear useful for measuring strongly fixed chemicals such as chromated copper arsenate, borate, and fluoride. Its effectiveness in detecting other preservatives has not been...
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    preservatives. Each block was oven-dried at 54 C for 24 hours and weighed (nearest 0.001 g) before being

  • 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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    MC to 50 to 100%. All wood was thoroughly mixed and equilibrated at 5 C for 6 weeks prior to

  • Resistance of Selected Wood-Based Materials to Fungal and Termite Attack in Non–Soil Contact Exposures

    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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    Article
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    Wood-Based Materials to Fungal and Termite Attack in Non–Soil Contact Exposures Jeffrey J. Morrell

  • Occurrence of preservative-treated wood in a wood recovery center in Western Oregon

    Creator:
    Morrell, Jeffrey J.
    Abstract:
    The amounts of treated wood present at a wood recycling center in western Oregon were surveyed over a 10-year period. Treated wood was found at 106 of 112 inspections, but the levels never exceeded 2 percent of the volume present. The amount of treated wood averaged 0.15 percent of the...
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    Article
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    a Wood Recovery Center in Western Oregon Jeffrey J. Morrell Abstract The amounts of treated wood

  • RC_51_low_res.pdf

    Creator:
    Morrell, Jeffrey J.
    Full Text:
    Pole Maintenance Manual: 2012 edition Jeffrey J. Morrell Research Contr ibut ion 51 December

  • RC_51.pdf

    Creator:
    Morrell, Jeffrey J.
    Full Text:
    Pole Maintenance Manual: 2012 edition Jeffrey J. Morrell Research Contr ibut ion 51 December

  • 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...
    Resource Type:
    Article
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    approximately 0.25 mm in di- ameter. Materials B and C contained 50/:50 wood-HPDE, with 1- to 2-mm-diameter

  • 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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    , Bedford, Massachu- setts) and stored at 5 C until needed. Regeneration The ability to regenerate to

  • 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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    culture for 2, 4, 6, 8, 10, 12, or 14 days at 28 C; then 0.25 g (fresh wt.) of mycelium was asceptically