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Filtering by: Creator Dibble, Kimberly L. Remove constraint Creator: Dibble, Kimberly L. Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • Impacts of microbial chemical interactions on marine plankton physiology

    Creator:
    Moore, Eric R.
    Abstract:
    The bioavailability of chemical compounds in the marine environment fundamentally influences the growth and physiology of microorganisms. Organic and inorganic chemicals that are produced by some marine plankton can be consumed by other plankton for energy production, growth, or to initiate essential physiological processes. Cultures of the diatom Thalassiosira pseudonana,...
    Resource Type:
    Dissertation
    Full Text:
    Abstract approved: ______________________________________________________ Kimberly H. Halsey The

  • Purification and properties of d'Anjou pear (Pyrus communis, L.) polyphenol oxidase

    Creator:
    Wissemann, Kimberly Warner
    Abstract:
    Polyphenol oxidase (PPO) from d'Anjou pears was purified and some molecular properties were studied. The extraction of PPO was accomplished in the presence of the phenolic binder AG 2X-8 and Triton X-100. Chlorophyll pigment was removed by chromatography resulting in a clear, colorless enzyme extract. Three fractions of pear PPO...
    Resource Type:
    Dissertation
    Full Text:
    d'Anjou Pear (Pyrus communis, L.) Polyphenol Oxidase by Kimberly Warner Wissemann A THESIS

  • Quantifying Carbon Production in Marine Ecosystems Using Expressions of Phytoplankton Physiology

    Creator:
    Penta, William Bryce
    Abstract:
    Phytoplankton initiate the marine carbon cycle by fixing carbon dioxide into biologically available compounds. These abundant single celled organisms mediate carbon flux from the atmosphere to the deep ocean and are the base of the marine food web, supplying new carbon to higher trophic levels. Phytoplankton are highly diverse and...
    Resource Type:
    Dissertation
    Full Text:
    Kimberly H. Halsey Phytoplankton initiate the marine carbon cycle by fixing carbon dioxide into

  • Chemical and Genetic Investigations of Toxic Freshwater Cyanobacterial Blooms for Improved Monitoring and Understanding of Lake Ecology

    Creator:
    Collart, Lindsay P.
    Abstract:
    Toxin production by cyanobacterial harmful algal blooms (cyanoHABs) in freshwater systems has lasting ecological and human impacts. Nutrients, light availability, hydrology, and microbial community composition impact the frequency and intensity of toxic cyanoHABs. Climate change will exacerbate toxic cyanoHABs, making real time and predictive monitoring a vital tool for managing...
    Resource Type:
    Dissertation
    Full Text:
    Kimberly H. Halsey Toxin production by cyanobacterial harmful algal blooms (cyanoHABs) in freshwater

  • Distribution center performance assessment

    Creator:
    Kuo, Chun-Ho, 1969-
    Abstract:
    The objective of this research is to assess the performance measurement systems currently used in today's distribution centers. A comprehensive investigation of distribution centers' performance measurement system is completed. Three major research phases are included in this study. An overview of distribution centers, including background, components, functions, and material handling...
    Resource Type:
    Dissertation
    Full Text:
    Performance Assessment. Abstract approved. Kimberly Dunn and Sabah Randhawa The objective of this research

  • Measuring in situ reductive dechlorination rates in trichloroethene-contaminated groundwater

    Creator:
    Hageman, Kimberly J.
    Abstract:
    Trichloroethene (TCE) is the most frequently detected organic contaminant in groundwater, is classified as a probable human carcinogen, and exhibits toxicological effects on the human endocrine, immune, developmental, and reproductive systems. While significant research efforts have been devoted to the development of strategies for remediating TCE-contaminated groundwater, their advancement is...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Kimberly J. Hageman for the

  • Environmental impacts on native bumble bee pollinators in an agricultural landscape of western Oregon

    Creator:
    Skyrm, Kimberly M.
    Abstract:
    Bumble bees provide vital pollination services in both native and agricultural landscapes. However, in recent years, bumble bee populations have experienced global population declines. The primary causes of these declines have been attributed to the environmental impacts of pathogens, pesticide use and habitat fragmentation. While research has examined the impacts...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Kimberly M. Skyrm for the degree

  • The effects of nitrogen manipulations and hydrology on the establishment and competitive abilities of wetland prairie plant species (western Oregon)

    Creator:
    Davis, Kimberly J.
    Abstract:
    Many studies suggest that weedy plant species are most successful when soil nitrogen in abundant. Consequently, I used soil nitrogen manipulations to determine if altering nitrogen would affect the establishment of both weedy and native plant species in a western Oregon wetland prairie. In two studies, we added carbon amendments...
    Resource Type:
    Dissertation
    Full Text:
    DISSERTATION OF Kimberly J. Davis for the degree of Doctor of Philosophy in Botany & Plant Pathology presented

  • Virtual Liberatory Women of Color Mentorship

    Creator:
    McAloney, Kimberly A.
    Abstract:
    Higher education literature lacks frameworks and models that consider women of color mentoring and fewer that discuss virtual mentorship among women of color. This work examined a successful and productive virtual mentorship and explored the key features of the mentorship, how the mentorship was maintained virtually, and the benefits and...
    Resource Type:
    Dissertation

  • Zimbabwean counselors' knowledge of and attitudes toward HIV/AIDS

    Creator:
    Richards, Kimberly A.
    Abstract:
    Acquired Immune Deficiency Syndrome (AIDS) has become the world's foremost health threat and is the number one killer in Zimbabwe. Acquired Immune Deficiency Syndrome impacts not only the individual who has AIDS, but on nuclear and extended families, and all aspects of society in Zimbabwe. Since studies have indicated that...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Kimberly Alexandra Mary