Index Catalog // ScholarsArchive@OSU

The spatial distribution of wood-nesting ants in the central Coast Range of Oregon

Creator:: Nielsen, Gary R. (Gary Richard), 1956-
Resource Type:: Dissertation
Full Text:: thank Dr. Everett Hansen and Dr. Donald Zobel for loaning field and laboratory equipment to me. I am

Logs as sites of tree regeneration in Picea sitchensis-Tsuga heterophylla forests of coastal Washington and Oregon

Creator:: Harmon, Mark E.
Abstract:: Logs are seedbeds for trees in many Picea sitchensis-Tsuga heterophylla forests of Washington and Oregon. Factors affecting this close association, including seed retention and seedling establishment on logs and successional changes in log characteristics, are explored In this study. Field and laboratory experiments indicated that competition with vegetation on the...
Resource Type:: Dissertation

Molecular karyotyping of Ustilago hordei and related smut fungi

Creator:: McCluskey, Kevin
Resource Type:: Dissertation
Full Text:: committee: Da llice Mills, Terri Lomax, Joyce Loper, Everett Hansen, and Tom Wolpert. A special thanks is

The influence of induced host moisture stress on the growth and development of western spruce budworm and Armillaria ostoyae on grand fir seedlings

Creator:: Parks, Catherine G.
Abstract:: This greenhouse study evaluates the influence of separately and simultaneously imposed water stress, western spruce budworm (Choristorneura occidentalis Freeman) defoliation, and inoculation with the root pathogen, Armillaria ostoyae (Romagn.) Herink, on the growth and biochemical features of Abies .grandis (Dougl.) Lindi. Seedling biomass, plant moisture status, bud phenology, and allocation...
Resource Type:: Dissertation

Comprehensive timber harvest planning for plantation forests on difficult terrain : Sokoine University of Agriculture Training Forest, Tanzania

Creator:: Shemwetta, Dunstan T. K.
Abstract:: Plantation forests on mountainous areas in Tanzania, East Africa, were successfully established in the 1950's. Harvesting started in the 1970's to meet increased national timber demand. Current problems of unharvested areas and potential environmental degradation are associated with uncontrolled harvests, mismatch of harvest systems to site needs, and post-harvest practices....
Resource Type:: Dissertation

Recruitment of ponderosa pine seedlings beneath partial overstories

Creator:: Keyes, Christopher R.
Abstract:: The objective of this project was to investigate the fate of ponderosa pine regeneration from seed to established seedling, and to determine the relative influences of several important stand elements on those fates. The project was carried out in a series of observational and experimental recruitment studies in central Oregon....
Resource Type:: Dissertation

Application of green fluorescent protein (GFP) for studing interactions between Ophiostoma piceae and Trichoderma harzianum in freshly sawn Douglas-fir sapwood

Creator:: Xiao, Ying
Abstract:: While microbial colonization of wood is presumed to be characterized by a myriad of interactions between numerous organisms, studying these processes is often difficult owing to the opaque nature of the wood and the inability to readily distinguish among the many species colonizing the material. One method for enhancing the...
Resource Type:: Dissertation

Breeding for bruchid resistance in common bean (Phaseolus vulgaris L.) : interspecific introgression of lectin-like seed proteins from tepary bean (P. acutifolius A. Gray), genetic control and bruchid resistance characterization.

Creator:: Kusolwa, Paul Mbogo
Abstract:: Interspecific hybridization was initiated between wild P. acutifolius accession G40199 and P. vulgaris to introgress resistance to Acanthoscelides obtectus (bean seed weevil). F1 interspecific hybrids were recovered by embryo rescue and maintained until flowering. Mostly sterile hybrids were backcrossed twice to common bean cultivar ICA Pijao to recover sufficient fertility...
Resource Type:: Dissertation
Full Text:: Graduate committee Drs: Oscar Riera-Lizarazu, Phillip Miklas, Machteld Mok, Everett Hansen and Cynthia

New application of crystalline cellulose in rubber composites

Creator:: Bai, Wen
Abstract:: Rubber without reinforcement has limited applications. The strength of reinforced rubber composites can be ten times stronger than that of unreinforced rubbers. Therefore, rubber composites are widely used in various applications ranging from automobile tires to seals, valves, and gaskets because of their excellent mechanical elastic properties. Silica and carbon...
Resource Type:: Dissertation
Full Text:: . I would also like to extend my appreciation to my committee members, Dr. Everett Hansen, Dr, Joe

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:: Dr. Barbara Lachenbruch – Committee Member Dr. Mike Milota – Committee Member Dr. Everett Hansen

ScholarsArchive@OSU

The spatial distribution of wood-nesting ants in the central Coast Range of Oregon

Logs as sites of tree regeneration in Picea sitchensis-Tsuga heterophylla forests of coastal Washington and Oregon

Molecular karyotyping of Ustilago hordei and related smut fungi

The influence of induced host moisture stress on the growth and development of western spruce budworm and Armillaria ostoyae on grand fir seedlings

Comprehensive timber harvest planning for plantation forests on difficult terrain : Sokoine University of Agriculture Training Forest, Tanzania

Recruitment of ponderosa pine seedlings beneath partial overstories

Application of green fluorescent protein (GFP) for studing interactions between Ophiostoma piceae and Trichoderma harzianum in freshly sawn Douglas-fir sapwood

Breeding for bruchid resistance in common bean (Phaseolus vulgaris L.) : interspecific introgression of lectin-like seed proteins from tepary bean (P. acutifolius A. Gray), genetic control and bruchid resistance characterization.

New application of crystalline cellulose in rubber composites

Modeling changes in flexural properties of softwood beams during fungal decomposition

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