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Filtering by: Creator Powell, Scott L. Remove constraint Creator: Powell, Scott L. Degree Level Doctoral Remove constraint Degree Level: Doctoral

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  • John Wesley Powell : science and reform in a positive context

    Creator:
    Zernel, John Joseph, 1945-
    Abstract:
    John Wesley Powell worked actively for public land system reform while a director of geographical and geological surveys in the West from 1869 to 1894. Although this has won him acclaim as a conservationist, the basis of Powell's linkage of reform with scientific work is poorly understood. A study of...
    Resource Type:
    Dissertation
    Full Text:
    Hayden, King, Powell, and Wheeler Surveys, by L. F. Schmeckebier, Geological Survey Bulletin No. 222

  • The relationship of estradiol to embryo-maternal interactions in the llama

    Creator:
    Powell, Susan A.
    Abstract:
    In the first experiment, estradiol production was measured in cultured embryos collected on Days 7, 9, 11, 13 and 15 post-mating. Estradiol was detected in Day 7 embryos and production increased approximately 50-fold (P<0.05) in medium recovered from Day 13 compared to Day 11 embryos and was greatest (P<0.05) from...
    Resource Type:
    Dissertation
    Full Text:
    in the llama AN ABSTRACT OF THE DISSERTATION OF Susan A. Powell for the degree ofDoctor of

  • Structural oppression of African Americans in higher education

    Creator:
    Powell, William N.
    Abstract:
    Researching what I believe to be exclusionary practices in higher education against African Americans has compelled me to approach this subject, in part, historically. Although I realize that a historical chronology of any subject is often deceptive, as with any writer, I am tempted to interpret events to fit my...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF William N. Powell for the degree of Doctor of Philosophy in

  • How Nearshore Currents affect Larval Dispersal and Genetic Connectivity of China Rockfish (Sebastes nebulosus) Along Oregon and Washington Coasts

    Creator:
    Avila, Alexandra M.
    Abstract:
    Connectivity of fish populations is a crucial question for fisheries conservation and the development of spatial management plans. Both adult and larval movement define the extent and direction of ecological and evolutionary overlap between geographic regions and, therefore, how we define stocks for management purposes. Within that context, my work...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Scott Heppell Connectivity of fish populations is a crucial question for fisheries

  • Response Sensitivity Formulations for Geometrically Nonlinear Finite Element Analysis

    Creator:
    Al-Aukaily, Alabbas
    Abstract:
    Significant amounts of uncertainty owing to both modeling decisions and inherent randomness are present in simulating the material and geometric nonlinear response of structural systems to extreme loading. Computing the sensitivity of structural response with respect to model parameters indicates which parameters have the largest affect on the response, which...
    Resource Type:
    Dissertation
    Full Text:
    . Scott Significant amounts of uncertainty owing to both modeling decisions and inher- ent randomness

  • Biophysical properties of the turnip yellow mosaic virus explored by coat protein mutagenesis

    Creator:
    Powell, Joshua D.
    Abstract:
    Plant viruses have been instrumental in our understanding of the biophysical properties pertaining to non-enveloped icosahedral virus particles. A substantial amount of research has been performed over five decades on Turnip yellow mosaic virus (TYMV), arguably one of the most extensively studied icosahedral plant viruses and the type-member of the...
    Resource Type:
    Dissertation
    Full Text:
          2   AN ABSTRACT OF THE DISSERTATION OF Joshua D. Powell for the degree of Doctor of

  • Life history patterns of two allopatric clupeids : Atlantic menhaden (Brevoortia tyrannus) and gulf menhaden (B. patronus)

    Creator:
    Powell, Allyn B.
    Abstract:
    Atlantic menhaden, compared to gulf menhaden, exhibit a life history pattern that appears to be adapted to a more unpredictable reproductive environment. From experiments on laboratory-reared eggs and larvae, Atlantic menhaden have larger eggs with larger yolk volume. They are larger at hatching, utilize their yolk faster, begin feeding at...
    Resource Type:
    Dissertation
    Full Text:
    Allyn B. Powell for the degree of Doctor of Philosophy in Fisheries and Wildlife presented on August 30

  • Single phase turbulent mixing between adjacent channels in rod bundles

    Creator:
    Galbraith, Kirk Powell
    Abstract:
    The turbulent interchange of matter between parallel adjacent subchannels in a simulated rod bundle for single phase flow was investigated to determine the effects of mass flow rate and rod spacing. The simulated rod bundle was made by placing six 1-inch diameter rods in a square-square array. The overall test...
    Resource Type:
    Dissertation
    Full Text:
    in rod bundles AN ABSTRACT OF THE THESIS OF KIRK POWELL GALBRAITH for the DOCTOR OF PHILOSOPHY

  • A study of nisin resistance in Listeria monocytogenes Scott A

    Creator:
    Ming, Xintian
    Abstract:
    Eight foodborne pathogenic and spoilage Gram-positive bacteria were evaluated for their spontaneous resistance frequencies to the peptide antimicrobial nisin. In brain heart infusion (BHI) medium, nisin resistance frequencies were in the range of l06 to l08 when exposed to nisin at concentrations 2 to 4 times the minimal inhibitory concentrations....
    Resource Type:
    Dissertation
    Full Text:
    . Physiological and genetic characteristics of a nisin resistant mutant of L. monocytogenes Scott A 47

  • Parametric uncertainties in reliability analysis of bridge structures

    Creator:
    Hamutcuoglu, Osman Murat
    Abstract:
    Probability-based reliability methods have placed an increased emphasis on realistic simulation of structural behavior in bridge engineering. Uncertainty is present in every aspect of structural analysis. Aleatory uncertainties in the loading and load-carrying capacities, and epistemic uncertainties in mathematical idealization of bridge systems are the major contributors to uncertain structural...
    Resource Type:
    Dissertation
    Full Text:
    Uncertainties in Reliability Analysis of Bridge Structures Abstract approved: Michael H. Scott Probability