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Filtering by: Creator Williford, Russell S. Remove constraint Creator: Williford, Russell S. Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • Temporal gamma-ray spectrometry to quantify relative fissile material content

    Creator:
    Williford, Russell S.
    Abstract:
    A new method for delayed gamma-ray spectrometry to quantify the relative content of fissile material is developed and demonstrated to support international efforts in bolstering non-destructive assay capabilities. Previous traditional delayed gamma-ray spectrometry techniques rely upon nuclear data that often carry very high uncertainty. The new method removes the requirement...
    Resource Type:
    Dissertation
    Full Text:
    Relative Fissile Material Content AN ABSTRACT OF THE DISSERTATION OF Russell S. Williford

  • Seed quality and plant establishment studies of seashore paspalum (Paspalum vaginatum Sw.)

    Creator:
    Baker, Stanley D.
    Abstract:
    Seashore paspalum (Paspalum vaginatum Sw.) is an important warm-season perennial turfgrass, known for its tolerance to salinity. Turfgrass is used for homes, municipalities, sod farms, resorts, and sports fields. Seashore paspalum has historically been planted in sub-tropical and tropical climates because of its heat tolerance. Seashore paspalum could become an...
    Resource Type:
    Dissertation
    Full Text:
    Approved: ____________________________________________________ Russell S. Karow Seashore paspalum

  • Whole farm case studies : a how-to guide

    Creator:
    Murray, Helene
    Abstract:
    Calls for increased farmer involvement in research and extension programs have been numerous and well supported. One approach to integrate the collective knowledge and experience of agricultural scientists and farmers is through whole farm case studies (WFCS). An interdisciplinary team of 34 research and extension personnel at Oregon and Washington...
    Resource Type:
    Dissertation
    Full Text:
    Abstract approved: Russell S. Karow Calls for increased farmer involvement in research and extension

  • Evaluation and use of a soil mineralizable nitrogen test to determine the fertilizer nitrogen needs of winter wheat grown in western Oregon

    Creator:
    Baloch, Dost M.
    Abstract:
    The assessment of optimum nitrogen (N) fertilizer need for winter wheat (Triticum aestivum L.) is important for economic and environmental sustainability. A comprehensive understanding of fertilizer N requirement depends on estimation of the quantity of N needed by the crop versus that supplied by soil. The objectives of this study...
    Resource Type:
    Dissertation
    Full Text:
    Fertilizer Nitrogen Needs of Winter Wheat Grown in Western Oregon Abstract approved: Russell S. Karow The

  • Growth and development of spring grain species as affected by planting date

    Creator:
    Armah-Agyeman, Grace
    Abstract:
    Changes in the federal farm program, in rainfall pattern and quantity, and increased incidence of herbicide resistant weeds and diseases have generated increased interest in spring grains in the Pacific Northwest. However, spring grains have traditionally been treated as minor crops in this region, thus little research has been done...
    Resource Type:
    Dissertation
    Full Text:
    as Affected by Planting Date. Abstract approved: ----- Russell S. Karow Changes in the federal

  • Malonaldehyde : certain chemical and biological properties

    Creator:
    Crawford, David Lee
    Abstract:
    Malonaldehyde, a three carbon dialdehyde, is one of the numerous carbonyl compounds associated with oxidative deterioration of food lipids. It is assumed to be formed as a product of lipid autoxidation occurring according to the generally accepted free radical mechanism. This compound is of great interest because of its potential...
    Resource Type:
    Dissertation
    Full Text:
    toxicity. Subacute feeding of rats malonaldehyde as the ethoxy derivative, 1, 1,3, S-tetraethoxypropane

  • Dietary protein and aflatoxin B₁ metabolism in rainbow trout (Salmo gairdneri)

    Creator:
    Stott, William T.
    Abstract:
    Dietary protein intake has been observed to influence the induction of cancer in animals exposed to carcinogens, presumably by affecting the activities of enzyme systems which metabolize them. One such carcinogen is aflatoxin B₁ (AFB₁) a mold metabolite and frequent contaminant of foodstuffs. Variations in the levels of dietary proteins...
    Resource Type:
    Dissertation
    Full Text:
    ) Abstract approved: / Russell 0. S-fnnhuber Dietary protein intake has been observed to influence the

  • Replica-plating and computer analysis for rapid identification of microorganisms in seafoods

    Creator:
    Corlett, Donald A.
    Abstract:
    A method was devised and tested for rapid and quantitative identification of microbial flora in fresh seafoods. The rapid identification of large numbers of isolates was made possible by (1) a simplified identification scheme established by reference culture studies and from the known reactions of microorganisms reported in the literature,...
    Resource Type:
    Dissertation
    Full Text:
    , Bacto-S-110, Bacto-potato dextrose agar; and culture pigmentation, cell morphology and the Gram

  • The Role of Bone Marrow Adipose Tissue in Bone Loss During Spaceflight and Simulated Spaceflight in Rodents

    Creator:
    Keune, Jessica Ann
    Abstract:
    The reduction in mechanical load imparted on the body during spaceflight presents unique physiological challenges. One detrimental and seemingly unavoidable response to microgravity is rapid bone loss. This adaptation is hazardous not only to astronaut health, but to the success of long-duration exploration-class missions. Skeletal adaptation to spaceflight in astronauts...
    Resource Type:
    Dissertation
    Full Text:
    : _____________________________________________________________ Urszula T. Iwaniec Russell T. Turner The reduction in mechanical load imparted on

  • An economic study of sewage transmission and land use : an empirical application

    Creator:
    Gibbs, Christopher J. N.
    Resource Type:
    Dissertation
    Full Text:
    USE: AN EHPJRICAL APPLICATION . Abstract approved: rr- p^——*—s—*_~—--- —= /Russell C