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  • Biological insertion of nanostructured germanium and titanium oxides into diatom biosilica

    Creator:
    Jeffryes, Clayton S.
    Abstract:
    There is significant interest in titanium oxide and germanium-silicon oxide nanocomposites for optoelectronic, photocatalytic, and solar cell applications. The ability of the marine diatom Pinnularia sp. to uptake soluble metal oxides from cell culture medium, and incorporate them into the micro- and nano-structure of their amorphous silica cell walls, called...
    Resource Type:
    Dissertation
    Full Text:
    Clayton S. Jeffryes for the degree of Doctor of Philosophy in Chemical Engineering presented on May 26

  • Silicon and germanium uptake and cell growth by the marine diatom Nitzschia frustulum

    Creator:
    Jeffryes, Clayton S.
    Abstract:
    Diatoms are single celled algae that form cell walls made primarily of silicon dioxide (SO₂). The metabolic machinery that gives diatoms the ability to biogenically form highly ordered solid silica from soluble silicon extracted from their external environment provides a unique platform to create novel nanostructured materials inexpensively and with...
    Resource Type:
    Masters Thesis
    Full Text:
    2.0 L and 3.0 L bubble columns. These experiments were long term (>3days afler Ge/Si pulse). Data for

  • Arithmetic dynamical questions with local rationality conditions

    Creator:
    Noytaptim, Chatchai
    Abstract:
    We introduce a numerical criterion which allows us to bound the degree of any algebraic integer having all of Galois conjugates in an interval of length less than 4. Using this criterion, we study two arithmetic dynamical questions with local rationality conditions. First, we classify all unicritical polynomials defined over...
    Resource Type:
    Dissertation
    Full Text:
    : Arithmetic Dynamical Questions with Local Rationality Conditions. Abstract approved: Clayton Petsche Let d

  • Uniform residence time in microreactor-assisted solution deposition of CdS thin-films for CIGS photovoltaic cells

    Creator:
    Hires, Clayton Lamar
    Abstract:
    Photovoltaic (PV) cells have long been an attractive alternative for the consumption of fossil fuels but current manufacturing practices suffer from poor energy efficiency, large carbon footprints, low material utilization, high processing temperatures and high solvent usage. A critical step in PV production is the deposition of CdS as a...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Clayton Lamar Hires for the

  • Characteristics and spatial relationships of day-roosts and activity areas of female long-eared myotis (Myotis evotis) in western Oregon

    Creator:
    Waldien, David L.
    Abstract:
    Management of habitat for bats requires sound information on their habitat requirements. I used radio telemetry to identify 80 roosts for 24 long-eared myotis (Myotis evotis); 74 roosts were identified for 21 females and 6 roosts for 3 males. Females primarily used dead and defective conifer trees (n=22) and conifer...
    Resource Type:
    Masters Thesis

  • Inside, Outside : Light and Dark

    Creator:
    Knotts, L. William
    Abstract:
    In a story of his life Les reflects on what he has gained and what he has lost while seeking success in the moving and shifting of military and academic life through homes and schools all over the United States. He describes himself as between races, languages, and cultures.
    Resource Type:
    Masters Thesis
    Full Text:
    THESIS OF L. William Knotts for the degree of Master of Arts in Interdisciplinary Studies, in the co

  • Headwater

    Creator:
    Martens, Jacob L.
    Abstract:
    These essays are an attempt to rebuild memories that explore the nature of work and family. They explore how work knocks against the joints of the body and against the joints between family members, and, as time passes, how the next generation inherits the family line of work only to...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Jacob L Martens for the degree of

  • Geneticist L.C. Dunn : politics, activism, and community

    Creator:
    Gormley, Melinda (Melinda Brooke)
    Abstract:
    L. C. Dunn (1893-1974) spent most of his scientific career conducting research in developmental genetics as a member of the Zoology Department at Columbia University in the City of New York. He had an accomplished scientific career researching mutations in mice, which earned him respect from other geneticists and scientists....
    Resource Type:
    Dissertation
    Full Text:
    : Mary Jo Nye L. C. Dunn (1893-1974) spent most of his scientific career conducting research

  • On Small Heights of Totally p-adic Numbers

    Creator:
    Stacy, Emerald T.
    Abstract:
    The height of an algebraic number A is a measure of how arithmetically complicated A is. We say A is totally p-adic if the minimal polynomial of A splits completely over the field of p-adic numbers. In this paper, we investigate what can be said about the smallest nonzero height...
    Resource Type:
    Dissertation
    Full Text:
    Heights of Totally p-adic Numbers. Abstract approved: Clayton J. Petsche The height of an algebraic

  • Fourier Analysis and Equidistribution on the p-adic Integers

    Creator:
    Somasunderam, Naveen
    Abstract:
    In this dissertation, we use Fourier-analytic methods to study questions of equidistribution on the compact abelian group Zp of p-adic integers. In particu- lar, we prove a LeVeque-type Fourier analytic upper bound on the discrepancy of sequences. We establish p-adic analogues of the classical Dirichlet and Fejér kernels on R/Z,...
    Resource Type:
    Dissertation
    Full Text:
    Analysis and Equidistribution on the p-adic Integers Abstract approved: Clayton J. Petsche In this