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  • A chemical study of the minerals from L-6 chondritic meteorites

    Creator:
    Curtis, David Ballantyne
    Abstract:
    Major and minor minerals have been separated from three L-6 chondritic meteorites (Alfianello, Colby (Wisconsin), and Leedey). Olivine, hypersthene, diopside, feldspar, troilite, chromite, phosphate minerals, and metallic minerals were analyzed for major, minor and trace elements using instrumental neutron activation analysis and radiochemical neutron activation analysis techniques. Concentrations df the...
    Resource Type:
    Dissertation
    Full Text:
    Chondritic Meteorites by David Ballantyne Curtis A THESIS submitted to Oregon State University in

  • Structure-property relationships of YbFe₂O₄-type layered transition metal oxides

    Creator:
    Grajczyk, Rosa
    Abstract:
    The structure–property relationships of solid solutions within the YbFe₂O₄ family of compounds have been studied in relation to their optical, dielectric and magnetic properties. This family of compounds is of recent interest because of the trigonal bipyramid coordination that is rarely observed in transition metal oxides. The systematic study of...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Munirpallam A. Subramanian The structure–property relationships of solid solutions

  • Applications of the Mannich reaction

    Creator:
    Bush, David Clair
    Resource Type:
    Dissertation
    Full Text:
    MANNICH REACTION by DAVID CLAIR BUSH A THESIS submitted to OREGON STATE COLLE}E in partial

  • Approaches to the total synthesis of verrucarol

    Creator:
    Hill, David E. (David Edwin) 1954-
    Abstract:
    Verrucarol is the sesquiterpene portion of a number of macrocyclic di- and triesters of potential medicinal importance. In this study, a novel approach to the synthesis of this fungal metabolite is presented. An A-B-C route was investigated in which C-3 and C-4 of the C-ring were emplaced using a [2+2]...
    Resource Type:
    Dissertation
    Full Text:
    . Approaches to the Total Synthesis of Verrucarol by David E. Hill A THESIS submitted to Oregon State

  • Tuning Functional Properties of Pyrochlore and Related Oxides via Cation and Anion Substitutions

    Creator:
    Giampaoli, Gabriella C. S.
    Abstract:
    Inorganic structures play an important role in materials due to their versatility and diversity. A complete understanding of the structure of a material is vital to enhance the creation of new materials that fill voids in research. The rational design of these compounds is driven by the exploitation of structure-property...
    Resource Type:
    Dissertation
    Full Text:
    and Anion Substitutions Abstract Approved: Mas A. Subramanian Inorganic structures

  • The development of aminal radicals for the synthesis of nitrogen-rich natural products

    Creator:
    Schiedler, David A.
    Abstract:
    Organic compounds which contain one or more nitrogen atoms are especially important as they are disproportionately represented among biologically active molecules. As a result, significant effort has been focused on the development of methods for the synthesis of nitrogenous molecules. We identified the aminal as an under-explored functional group. Despite...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF David A

  • Steroid dialkylcarbene reactions

    Creator:
    Dixon, Dale David
    Abstract:
    Steroid carbenes have been investigated as synthetic intermediates. Basic decomposition of 4-en-3-one tosylhydrazones (and other A-ring systems) gives varying amounts of 2, 4-dienes, and solvent derived products with diglyme, heptane, tetrachloroethylene, carbon tetrachloride, benzene and cyclohexene. A method for separating complex product mixtures was developed and a study of the...
    Resource Type:
    Dissertation
    Full Text:
    properties of these compounds are discussed. Steroid Dialkylcarbene Reactions by Dale David Dixon A

  • Application of a weighted Dice Similarity Coefficient (DSC) for Structure Comparison in Radiation Treatment Planning

    Creator:
    Fried, Zachary
    Abstract:
    Coded metrics that compare representations of structures within the human body to evaluate their similarity are considered useful for planning radiation therapy on cancer targets. However, existing metrics fail to take into account the dose of radiation that will be received by both the target, and surrounding non-target tissue, during...
    Resource Type:
    Honors College Thesis
    Full Text:
    zacharyFriedHonorsCollegeThesis i Application of a

  • Conformation and reactivity studies of some bicyclo(3.3.1) nonane derivatives

    Creator:
    Sturmer, David Michael
    Abstract:
    New syntheses for 2-bicyclo(3.3.1)nonanone and 7-bicyclo-(3.3.1)nonen-2-one were developed. The saturated ketone was prepared from phenol and acrylonitrile via a novel intramolecular S[subscript N]2 cyclization process. A Friedel-Crafts cyclization of 3-(3-cyclohexenyl)propanoyl chloride permitted synthesis of the unsaturated ketone from 4-cyclohexene carboxaldehyde. The formation of the bicyclo(3.3.1)nonane rather than a bicyclo(3.2.2)nonane skeleton...
    Resource Type:
    Dissertation
    Full Text:
    DERIVATIVES by DAVID MICHAEL STURMER A THESIS submitted to OREGON STATE UNIVERSITY in partial

  • The effect of impurities on the gamma-ray coloration of potassium chloride crystals

    Creator:
    Hinks, David George
    Abstract:
    The incorporation of europium and dysprosium in potassium chloride crystals was investigated. The crystals were prepared by the Kyropoulos method from melts containing the rare-earth chlorides. The concentration of these rare-earth ions in the crystals was determined by neutron-activation analysis. The distribution coefficient of europium and dysprosium between the molten...
    Resource Type:
    Dissertation
    Full Text:
    Impurities on the Gamma-Ray Coloration of Potassium Chloride Crystals by David George Hinks A THESIS