Index Catalog // ScholarsArchive@OSU

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

Management of powder-post beetles, Dinoderus minutus F. in freshly cut bamboo

Creator:: Garcia, Carlos Manalo
Abstract:: The goal of this project was to develop an integrated pest management strategy for the control of a powder-post beetle (Dinoderus minutus F.). This species causes serious damage in Philippine bamboo. Developmental threshold and thermal constants were examined and natural enemies and ftmgi associated with beetles were investigated. Finally, the...
Resource Type:: Dissertation
Full Text:: . Jeffrey J. Morrell, for his inspiring encouragement and full support from the initial phase of

Supercritical fluid impregnation with biocides of wood using temperature reduction

Creator:: Kang, Sung-Mo
Abstract:: Supercritical fluid (SCF) impregnation is a promising preservative treatment method, however, the development of SCF processes has been slowed by a limited understanding of the process. Developing a better understanding of the effects of various process parameters on treatment results would allow for a more rational development of SCF impregnation....
Resource Type:: Dissertation
Full Text:: with Biocides of Wood Using Temperature Reduction. Abstract approved Jeffrey J. Morrell

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

Effect of nutrients on interactions between two decay fungi and Trichoderma harzianum Rifai on ponderosa pine sapwood wafers

Creator:: Canessa, Edwin
Abstract:: Small size wood assays were utilized to study the effect of added nutrients to the wood on the interactions of Trichoderma harzianum Rifai and two wood decay fungi, Trametes versicolor (white rot) and Gloeophyllum trabeum (brown rot). Weight losses related to time of exposure were monitored as a measure of...
Resource Type:: Dissertation
Full Text:: gratitude to Dr. Jeffrey Morrell for his guidance, advice and encouragement during the preparation of this

Biology of the carpenter ants Camponotus vicinus (Mayr) and Camponotus modoc (Wheeler) in western Oregon

Creator:: Mankowski, Mark E.
Abstract:: Pest control operators in Oregon were surveyed to examine the occurrence of carpenter ants and other wood destroying organisms in structures. Carpenter ants frequently occurred in the coast and Willamette valley regions of the state and were associated with wetter, mesic habitats. To examine the effects of substrate and moisture...
Resource Type:: Dissertation

Pressure measurement in wood as a method to understand impregnation processes : conventional and supercritical carbon dioxide

Creator:: Schneider, Philip F.
Abstract:: Two approaches to improving wood treatability include the modification of pressure schedules during conventional liquid treatments and the use of supercritical fluids (SCFs). In both of these techniques, pressure differences are important for transporting materials into wood. The level of pressure and its change during SCF treatments are also important...
Resource Type:: Dissertation

Supercritical fluid impregnation of wood-based composites

Creator:: Acda, Menandro N.
Resource Type:: Dissertation

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

Characterization of Fungal Communities in Selected Wood Species by Field Exposure Tests

Creator:: Torres-Andrade, Paola A.
Abstract:: Fungi are the primary biological agents of wood deterioration and cause major economic losses of wood products globally. Wood in outdoor applications tends to remain wet for extended time periods, making it susceptible to fungal attack. Understanding the factors involved in fungal colonization of wood is important for developing improved...
Resource Type:: Dissertation
Full Text:: Abstract approved: ______________________________________________________ Jeffrey J. Morrell

ScholarsArchive@OSU

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

Management of powder-post beetles, Dinoderus minutus F. in freshly cut bamboo

Supercritical fluid impregnation with biocides of wood using temperature reduction

Modeling changes in flexural properties of softwood beams during fungal decomposition

Effect of nutrients on interactions between two decay fungi and Trichoderma harzianum Rifai on ponderosa pine sapwood wafers

Biology of the carpenter ants Camponotus vicinus (Mayr) and Camponotus modoc (Wheeler) in western Oregon

Pressure measurement in wood as a method to understand impregnation processes : conventional and supercritical carbon dioxide

Supercritical fluid impregnation of wood-based composites

Decomposition of Basamid in Douglas-fir heartwood

Characterization of Fungal Communities in Selected Wood Species by Field Exposure Tests

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