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Filtering by: Creator Horton, Benjamin P. Remove constraint Creator: Horton, Benjamin P. Degree Level Doctoral Remove constraint Degree Level: Doctoral File Format application/pdf Remove constraint File Format: application/pdf

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  • Electron molecule interactions of amino acids and peptides

    Creator:
    Figard, Benjamin J.
    Abstract:
    Electron-biomolecule interactions are a biologically relevant field of study because there are several ion fragmentation techniques that have come to the forefront in mass spectrometric analysis that involve the interaction of charged peptides and free electrons. By studying the electron energies that cause fragmentation in neutral amino acids, amino acid...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE THESIS OF Benjamin J. Figard for the degree of Doctor of Philosophy in

  • Essays on the economics of wildlife management

    Creator:
    Rashford, Benjamin S.
    Abstract:
    Wildlife managers are on the front lines of the effort to conserve wildlife and are required to do so cost-effectively. This dissertation consists of three manuscripts that integrate economics and ecology to inform cost-effective wildlife management. The first and second manuscripts focus on identifying cost-effective wildlife management plans. The third...
    Resource Type:
    Dissertation
    Full Text:
    ABSTRACT OF THE DISSERTATION OF Benjamin S. Rashford for the degree of Doctor of Philosophy in

  • Gas-phase fragmentation chemistry of protonated peptide ions

    Creator:
    Bythell, Benjamin James
    Abstract:
    The fragmentation characteristics of protonated peptides have been investigated using tandem mass spectrometry (MS/MS) under various fragmentation regimes and detailed density functional theory (DFT) reaction pathway calculations. The DFT calculations predict novel salt-bridge stabilized transition structures as well as consecutive reactions occurring in proton-bound dimers for some of the ions...
    Resource Type:
    Dissertation
    Full Text:
    2 AN ABSTRACT OF THE DISSERTATION OF Benjamin James Bythell for the degree of Doctor of

  • Fatty acid profiling of soil microbial communities : a comparison of extraction methods and temporal dynamics in plant residue amended soils

    Creator:
    Fernandes, Marcelo Ferreira
    Abstract:
    A method based on fatty acid (FA) analysis is used to profile microbial community structure (MCS). Various extraction protocols are available, which alter the types of FAs extracted from soils. The more time consuming but widely used protocol extracts only FAs from phospholipids (PLFA). This technique is desirable because PLFAs...
    Resource Type:
    Dissertation
    Full Text:
    . Abstract approved: Richard P. Dick

  • 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
    Full Text:
    , SALACIN AND ALMAZOLES Abstract approved: Kevin P. Gable Studies

  • Indirect effects of ultraviolet-B radiation on larval amphibians as mediated by food quality and trophic interactions

    Creator:
    Scheessele, Erin A.
    Abstract:
    Ultraviolet-B radiation (UVB) is an abiotic stressor in both terrestrial and aquatic systems. The stratospheric ozone layer, depleted due to anthropogenic activities and the cause of elevated UVB at earth's surface over the last four decades, is predicted to recover by 2065. However, UVB levels in aquatic systems may continue...
    Resource Type:
    Dissertation
    Full Text:
    . Growth and development of R. cascadae did not differ between a UVB-exposed and UVB-shielded diet, but P

  • Dynamic issues in applied microeconomics: market performance, market structure and advertising competition

    Creator:
    Iwasaki, Natsuko
    Abstract:
    This dissertation addresses issues of oligopoly markets where advertising plays a prominent role. The first study empirically investigates the effect of advertising regulations on equilibrium consumption of an addictive commodity using U.S. cigarette industry data. The results of the first study show that the advertising regulations reduced cigarette consumption by...
    Resource Type:
    Dissertation
    Full Text:
    Natsuko Iwasaki Carol Horton Tremblay And Victor J. Tremblay 4

  • Linkages among land use, riparian zones, and uptake and transformation of nitrate in stream ecosystems

    Creator:
    Sobota, Daniel J.
    Abstract:
    Land use alters the physical and biological structure of stream ecosystems and potentially alters their capacity to process nitrogen (N), an essential nutrient that has nearly doubled in abundance on the biosphere during the past century from human activities. In this dissertation, I quantified uptake and transformation of nitrate (NO₃⁻)...
    Resource Type:
    Dissertation
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    dissolved inorganic N (11 to 111 µg N L-1) across six streams (p = 0.04), but this relationship was

  • Seconds to hour scale photosynthetic responses in marine microalgae

    Creator:
    Laney, Samuel R.
    Abstract:
    Our view of phytoplankton has historically revolved around their inability to control their location in space. The term phytoplankton itself underscores this particular difference between phytoplankton and their sessile terrestrial counterparts. Yet there are other differences between land plants and the phytoplankton that are perhaps equally important, beyond this sessile-planktonic...
    Resource Type:
    Dissertation
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    particular combinations of Fv/Fm, σPSII, p, and τ, and b) examples of fits to a simulated Pe-E relationships

  • Effects of disturbance modes on mycorrhizal fungus communities at Crater Lake National Park

    Creator:
    Trappe, Matt
    Abstract:
    Crater Lake National Park presents an excellent opportunity for ecological research due to its relatively pristine landscape, the protection of its natural features, its infrastructure, and a Park administration supportive of scientific inquiry and restoration ecology. The research presented here examines the responses of fungi to various forms of perturbation....
    Resource Type:
    Dissertation
    Full Text:
    1.3 ANOVA p - values for differences between treatments ................................67 1.4