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Filtering by: Creator Zinn, Jeffrey A. Remove constraint Creator: Zinn, Jeffrey A. Committee Member Stone, Jeffrey Remove constraint Committee Member: Stone, Jeffrey

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  • Improving the durability of second growth timbers of naturally durable species

    Creator:
    Cabrera Orozco, Yohanna
    Abstract:
    While the heartwood of many wood species exhibits excellent resistance to fungal and insect attack, this resistance is sometimes diminished in second-growth material of the same species. The reasons for the reduced durability are unclear, but they may reflect a combination of both higher proportions of sapwood as well as...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________ Jeffrey J.Morrell While the heartwood of many wood species exhibits excellent resistance

  • Effects of biocide treatment on durability and fungal colonization of teak, western redcedar, and redwood

    Creator:
    Cabrera Orozco, Yohanna
    Abstract:
    Treating durable, second-growth or plantation-grown material with supplemental chemicals could improve durability while enhancing the uniformity of the products. To test this hypothesis, the effect of two candidate biocide treatments on the durability of teak, redwood, and western redcedar was assessed in a ground proximity field test established in Hawaii....
    Resource Type:
    Dissertation
    Full Text:
    : _____________________________________________________________________ Jeffrey J. Morrell Natural durability is generally lower in wood coming from second-growth

  • Modeling changes in flexural properties of softwood beams during fungal decomposition

    Creator:
    Mitsuhashi Gonzalez, June M.
    Abstract:
    Moisture intrusion in residential structures can lead to substantial fungal decay and this damage costs billions in repair/replacement costs. The extent of damage and the rate at which it occurs are primarily dependent on the wood moisture content and temperature in the structure. Determining the risk of decay for various...
    Resource Type:
    Dissertation
    Full Text:
    Jeffrey J. Morrell Moisture intrusion in residential structures can lead to substantial fungal

  • Biotransformation of 2,4,6-trinitrotoluene by ruminal organisms

    Creator:
    De Lorme, Marthah J. M.
    Abstract:
    2,4,6-Trinitrotoluene (TNT) has been the common munitions used in the world and is an environmental contaminant that is amendable to reductive transformation reactions. The rumen is an extremely reductive environment containing diverse microbial populations. There are 21 pure culture ruminal bacteria species in culture collection, these were tested for the...
    Resource Type:
    Dissertation
    Full Text:
    Abstract approved: ________________________________________________ A. Morrie Craig 2,4,6

  • Systematics of the genus Torrubiella

    Creator:
    Johnson, Desiree M.
    Abstract:
    Torrubiella is a genus of entomopathogenic fungi in the Clavicipitaceae (Ascomycota). Species of the genus produce superficial perithecia on a loose mat of hyphae that forms directly on the host. The genus is estimated to contain about 70 species. Torrubiella is hypothesized to be a close relative of Cordyceps because...
    Resource Type:
    Masters Thesis
    Full Text:
    Torrubiella is a genus of entomopathogenic fungi in the Clavicipitaceae (Ascomycota). Species of the genus

  • Cellulose reinforced high density polyethylene

    Creator:
    Palaniyandi, Velmurugan
    Abstract:
    High density polyethylene (HDPE) is a ubiquitous material with versatile properties. It is produced and used in greater volume than any other thermoplastic. HDPE is often filled with a variety of materials for various applications. Glass fiber and wood flour are two common fillers for HDPE. Recently there has been...
    Resource Type:
    Masters Thesis

  • Physiological impacts of Swiss needle cast on Douglas-fir

    Creator:
    Manter, Daniel K.
    Abstract:
    A series of studies, in three western Oregon Douglas-fir plantations, was conducted to understand the physiological impacts of Swiss needle cast on Douglas-fir physiology. Four aspects of the disease complex were investigated: fungal colonization and assessment, plant-water relations, carbon assimilation and interaction with climate. Several techniques were developed and used...
    Resource Type:
    Dissertation

  • Hypermutagenic induction of mitotic recombination by ionizing radiation in Mlhl null mouse cells

    Creator:
    Wang, Qi
    Abstract:
    Mitotic recombination is a common autosomal mutation in mammalian cells involving crossover events between homologous chromosomes. This process can convert a cell with a heterozygous deficiency to one with a homozygous deficiency, and thus often represents the second step in tumor suppressor gene inactivation. In this study I examined the...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: Mitchell S. Turker Mitotic recombination is a common autosomal mutation in mammalian cells

  • Interaction of linker proteins, H1 and HMG1, with nucleosome reconstituted on positioning sequences

    Creator:
    An, Woojin
    Abstract:
    The aim of this research was to gain more understanding on how a linker histone (LH), H1⁰, and high mobility group protein, HMG1, interact with nucleosome. To determine the location of linker proteins, three specific positioning sequences were used to reconstitute core nucleosomes and the binding of H1 and HMG1...
    Resource Type:
    Dissertation
    Full Text:
    Holde/Jordaika Zlatanova The aim of this research was to gain more understanding on how a linker

  • Systematics, phylogeny, and biogeography of the hysterangiales and related taxa (Phallomycetidae, Homobasidiomycetes)

    Creator:
    Hosaka, Kentaro
    Abstract:
    Monophyly of the gomphoid-phalloid clade was confirmed based on multigene phylogenetic analyses. Four major subclades (Hysterangiales, Geastrales, Gomphales and Phallales) were also demonstrated to be monophyletic. The interrelationships among the subclades were, however, not resolved, and alternative topologies could not be rejected statistically. Nonetheless, most analyses showed that the Hysterangiales...
    Resource Type:
    Dissertation
    Full Text:
    Hysterangiales and Phallales do not form a monophyletic group, which is in contrast to traditional taxonomy