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Filtering by: Creator Welch, Kevin D. Remove constraint Creator: Welch, Kevin D. Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • Longitudinal electroproduction of charged pions from Hydrogen, Deuterium, and Helium-3

    Creator:
    Gaskell, David J.
    Abstract:
    Conventional pictures of nuclear interactions, in which the pion mediates the long/medium range part of the nuclear force, predict an enhancement of the virtual pion cloud in nuclei relative to that in the free nucleon. Jefferson Lab Experiment E91003 measured charged pion electroproduction from Hydrogen, Deuterium, and Helium-3. The longitudinal...
    Resource Type:
    Dissertation
    Full Text:
    from Hydrogen, Deuterium, and Helium-3. Abstract approved: Patrick Welch Conventional pictures of

  • Studies toward the total synthesis of alkaloids : nagelamide A and D, agelastatin D, dragmacidin A-C, salacin and almazoles

    Creator:
    Tonsiengsom, Sorasaree
    Abstract:
    Studies toward the total syntheses of highly potent cytotoxic alkaloids including the bromopyrrole alkaloids and indole alkaloids were conducted and are described. Studies carried out in the course of this dissertation consist of five total syntheses of natural products that include bromopyrrole alkaloids nagelamide A, D and agelastatin D as...
    Resource Type:
    Dissertation
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    : STUDIES TOWARD THE TOTAL SYNTHESIS OF ALKALOIDS: NAGELAMIDE A AND D, AGELASTATIN D, DRAGMACIDIN A-C

  • Optimizing the primary forest products supply chain : a multi-objective heuristic approach

    Creator:
    Hamann, Jeff D.
    Abstract:
    This thesis is a collection of four submitted manuscripts that present methods to assist forest ecosystem service managers wanting to develop operational sampling, monitoring, and production plans for a set of specific quantifiable ecosystem services, which are formulated as a series of general multi-objective optimization problems. The problems are solved...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Jeff D. Hamann for the degree

  • Examination of airborne discrete-return lidar in prediction and identification of unique forest attributes

    Creator:
    Wing, Brian M.
    Abstract:
    Airborne discrete-return lidar is an active remote sensing technology capable of obtaining accurate, fine-resolution three-dimensional measurements over large areas. Discrete-return lidar data produce three-dimensional object characterizations in the form of point clouds defined by precise x, y and z coordinates. The data also provide intensity values for each point that...
    Resource Type:
    Dissertation
    Full Text:
    : _____________________________________________________________________ Kevin D. Boston Airborne discrete-return lidar is an active remote sensing technology

  • The role of strategic planning in the management of fire-prone western Oregon forests for maximizing terrestrial carbon stocks over a 100-year horizon

    Creator:
    Vanderberg, Michael R.
    Abstract:
    Current frameworks for analyzing forest carbon offset projects in disturbance-prone western forests often fail to address the dynamic nature of carbon pathways through time. They do not account for the probability of loss due to wildfire, which can influence the prediction of carbon storage at the end of a planning...
    Resource Type:
    Dissertation
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    : _____________________________________________________ Kevin D. Boston Current frameworks for analyzing forest carbon offset

  • Prenatal and Early-life Metals Exposure and Immune Function in Children

    Creator:
    Welch, Barrett M.
    Abstract:
    Immune system development during prenatal and early-life periods are essential for healthy development. Environmental and nutritional factors during these periods have strong influences on immune development and can have impacts on disease susceptibility for an individual throughout adulthood. Globally, hundreds of millions of people experience elevated environmental exposure to arsenic,...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Barrett Welch

  • Mechanistic studies on Re(V) mediated C-O bond transformations

    Creator:
    Zhuravlev, Fedor
    Abstract:
    In situ, reduction of Cp*ReO₃ by PPh₃ to form (Cp*ReO)₂(μ-O)₂ allows catalytic deoxygenation of epoxides, however, conproportionation between Reⱽ and Reⱽᴵᴵ species to form clusters of ((Cp*Re)₃(μ-O)₆}²⁺(ReO₄⁻)2 and new compound {(Cp*Re)₃(μ²-O)₃(μ³-O⁾³ReO₃}⁺(ReO₄⁻) leads to removal of rhenium from the catalytic cycle and loss of activity, The epoxide deoxygenation mediated by (Cp*ReO)₂(μ-O)₂...
    Resource Type:
    Dissertation
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    (V Mediated 0-0 Bond Transfor- mations. Abstract Approved: Kevin Gable In situ, reduction of Cp

  • Inclusion Fusion and Genetic Recombination: Bridging the Gap Between the Chlamydiae

    Creator:
    Garvin, Lotisha E.
    Abstract:
    Chlamydia is an obligate intracellular bacterial pathogen that causes a variety of disease in animals and humans worldwide. Veterinary chlamydial pathogens can lead to chronic infections and serious consequences that result in millions of dollars of losses in animals and resources in the agricultural industry in countries that rear ruminants....
    Resource Type:
    Dissertation
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    Abstract approved: Daniel D. Rockey

  • Active site studies and design of ligands for affinity column separation of 2,5-dihydroxyacetanilide epoxidase (DHAE) I and II

    Creator:
    Allen, Scott E.
    Abstract:
    A series of compounds, 7-8 and 20-25, were tested as competitive inhibitors of 2,5-dihydroxyacetanilide epoxidase I (DHAE I) and DHAE II. A Hammett plot was constructed for each enzyme to determine the effect of electron density on inhibition. DHAE I gave a linear, highly correlated plot (r²=0.91) that signifies the...
    Resource Type:
    Dissertation
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    . Abstract approved Kevin P. Gable A series of compounds, 7-8 and 20-25, were tested as competitive

  • Rhenium-catalyzed oxygen-atom transfer reactions : mechanism and applications

    Creator:
    Brown, Eric C.
    Abstract:
    In situ reduction of hydrido-tris-(3,5-dimethylpyrazolyl)borato(trioxo) rhenium(V) with triphenylphosphine or triethylphosphite leads to a reactive rhenium(V) species that catalytically deoxygenates epoxides at 75-105°C. The reaction is stereospecific, except for trans- and cis-butene oxide which formed minor amounts of the opposite isomer. A variety of different functional groups were tolerated and even...
    Resource Type:
    Dissertation
    Full Text:
    ACKNOWLEDGMENTS I would like to sincerely thank Prof. Kevin Gable for all his assistance, guidance and