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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

  • Remediation of atrazine in irrigation runoff by a constructed wetland

    Creator:
    Runes, Heather B.
    Abstract:
    Due to its frequent use in agriculture and its frequent detection in surface water, atrazine was chosen as a model compound to study the treatment capability of a surface flow wetland used to remediate irrigation runoff at a container nursery near Portland, Oregon. Further evaluation of treatment of atrazine was...
    Resource Type:
    Dissertation
    Full Text:
    would also like to thank my advisor, Dr. Jeffrey Jenkins. Jeff and I spent many long, hot days working

  • Effect of the calpain inhibitor E-64-d on the degradation of α-fodrin in damaged muscle

    Creator:
    Boyd, Jeffrey
    Abstract:
    We hypothesized that calpain activity is elevated in response to muscle damage. To test this hypothesis, we examined the degradation of α-fodrin into its 150 and 145 kDa fragments following either 20 eccentric or isometric contractions. In addition, experiments were performed in the presence or absence of E-64-d, a calpain...
    Resource Type:
    Masters Thesis
    Full Text:
    THE THESIS OF Jeffrey Boyd for the degree of Master of Science in Exercise and Sport Science

  • Three-dimensional motion of the center of mass and energetic cost across a variety of walking speeds : a comparison between adults with and without Down syndrome

    Creator:
    Agiovlasitis, Stamatis
    Abstract:
    It has been previously suggested that the walking pattern of individuals with Down syndrome is inefficient. This is thought to result from increased instability, particularly in the medio-lateral direction, due to the characteristic joint laxity and muscle hypotonia of individuals with DS. Therefore, this work was an attempt to gain...
    Resource Type:
    Dissertation
    Full Text:
    : _____________________________________________________________________ Jeffrey A. McCubbin It has been previously suggested that the walking pattern of

  • Hydro-biogeochemical coupling at the hillslope and catchment scale

    Creator:
    van Verseveld, Willem J.
    Abstract:
    The specific objectives of this dissertation are to determine subsurface flow behaviors across different antecedent wetness conditions from a top-down perspective and to mechanistically assess the hydrological controls on DOC and N transport at the hillslope and catchment scale. The study area is a small catchment where hillslopes issue directly...
    Resource Type:
    Dissertation
    Full Text:
    approved:______________________________________________________ Jeffrey J. McDonnell The specific

  • Limiting copper loss from treated wood in or near aquatic environments

    Creator:
    Mitsuhashi Gonzalez, June M.
    Abstract:
    Copper migration from treated wood has created concerns within the environmental community because of the potential effects of this heavy metal on aquatic organisms. Migration can be limited, to some extent, by more controlled treatments and by post-treatment processing, but these actions cannot completely overcome the problem. An alternative approach...
    Resource Type:
    Masters Thesis
    Full Text:
    Jeffrey J. Morrell Copper migration from treated wood has created concerns within the

  • The phytosanitation of solid wood packaging materials using wood preservatives

    Creator:
    Schauwecker, Christoph F.
    Abstract:
    New species introductions have been associated with the movement of people for thousands of years. For instance, horses were introduced into North America by Spanish explorers, while pigs were introduced by the Polynesians into many Pacific islands long before the establishment of permanent European settlements. Both of these species introductions...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: ______________________________________________________________ Jeffrey J. Morrell

  • Measurement and modeling the physical controls of snowmelt in the Pacific Northwest

    Creator:
    Mazurkiewicz, Adam B.
    Abstract:
    The physical controls of snowmelt in the Pacific Northwest (PNW) are poorly understood. While there have been numerous field and modeling investigations at the plot and watershed scale, few studies have identified how the snow energy balance (EB) components vary in importance both spatially and temporally. The identification of how...
    Resource Type:
    Masters Thesis
    Full Text:
    Northwest Abstract approved: —————————————————————————————————— Jeffrey J. McDonnell The

  • Temporal and spatial variability of groundwater nitrate in the southern Willamette Valley of Oregon

    Creator:
    Mutti, Jeffrey Glenn
    Abstract:
    Groundwater nitrate contamination is a well-documented issue in the Southern Willamette Valley (SWV) of Oregon, as a Groundwater Management Area (GWMA) has recently been declared. As a GWMA, groundwater nitrate monitoring must occur until regional concentrations are below 7 mg/L NO3-N. However, the presence of temporal variability can make it...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Jeffrey Glenn Mutti for

  • Survey of Oregon Coastal Port Districts: 1976

    Creator:
    Burger, Jeffrey
    Abstract:
    Estuaries, an important part of the continental shelf, have been important centers for the economic development of man. They serve as an interface between the terrestrial and oceanic realm and are a part of the ocean that receives the most physical damage. Different agencies and political groups are vested with...
    Resource Type:
    Capstone Project
    Full Text:
    Survey of Oregon Coastal Port Districts: 1976 by Jeffrey