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  • Quantification of fructose equivalents in straw extracts

    Creator:
    Kim, Eugene
    Abstract:
    Cereal and commercial grass-seed straws are abundant plant biomass materials that are currently being considered for application in industrial processes aimed at the production of biofuels, biomaterials, and biochemicals. The carbohydrate fraction of these straws is of particular interest in this context due to its chemical functionality and relative ease...
    Resource Type:
    Masters Thesis
    Full Text:
    : Michael H. Penner Cereal and commercial grass-seed straws are abundant plant biomass materials that

  • Hybrid electric vehicle active rectifier performance analysis

    Creator:
    Amon, Ean A.
    Abstract:
    In advanced hybrid electric vehicle development, performance and dependability are essential considerations in the design process. High efficiency is crucial in a successful design and fault tolerance is necessary to provide limp-home capability under faulted operating conditions. The reduction of electromagnetic interference is mandatory to reduce interference in communications and...
    Resource Type:
    Masters Thesis
    Full Text:
    ], [4], [8], [9]. Radical approaches involve independent inverters (multiphase, H- bridge) for each

  • Phenology and monitoring of the cabbage maggot, Delia radicum (L.), in brassica root crops

    Creator:
    Dreves, Amy J.
    Abstract:
    In Oregon’s northern Willamette Valley, cabbage maggot (CM), Delia radicum (L.) (Diptera: Anthomyiidae) often renders Brassica root crops unmarketable. Scheduled insecticides are the only current control. Studies were conducted to: 1) describe and characterize spring emergence of CM flies and their seasonal flight activity relative to degree-day (DD) accumulations; 2)...
    Resource Type:
    Dissertation
    Full Text:
    crop damage; 3) define influence of seasonal planting and harvest dates relative to root damage; 4

  • Ecological subsidies to rocky shore communities : setting the stage for community dynamics in the Northeast Pacific

    Creator:
    Krenz, Christopher
    Abstract:
    This dissertation focuses on the importance of pelagic subsidies in the Northeast Pacific to rocky shore community regulation. My results document the patterns of pelagic subsidy supply, determine if those subsidies are correlated with community structure, and examine if community regulation differs between areas of high- and low-subsidies. Understanding how...
    Resource Type:
    Dissertation
    Full Text:
    . In Chapter 4, using a comparative-experimental approach I addressed the effect of recruitment on

  • Exploring the cellular mechanisms of Cnidarian bleaching in the sea anemone Aiptasia pallida

    Creator:
    Perez, Santiago
    Abstract:
    Many members of the Phylum Cnidaria are mutualistic with unicellular dinoflagellates belonging to the genus Symbiodinium. Corals are the most widely recognized example of these associations due to their key ecological importance in coral reef ecosystems where they serve as the structural and trophic foundation of these rich ecosystems. Coral...
    Resource Type:
    Dissertation
    Full Text:
    with CsA in vitro. In Chapter 4 I review what is known about the molecular and cellular mechanisms

  • Factors influencing nest success of greater sandhill cranes at Malheur National Wildlife Refuge, Oregon

    Creator:
    Ivey, Gary L.
    Abstract:
    I developed a priori hypotheses and used logistic regression to model Greater Sandhill Crane (Grus canadensis tabida) nest success in relation to weather, habitat and management variables for cranes breeding at Malheur National Wildlife Refuge (MNWR) in southeast Oregon. My primary interest was to investigate the effects of habitat conditions...
    Resource Type:
    Masters Thesis
    Full Text:
    . I monitored 506 nests over 9 breeding seasons; mean apparent nest success was 72% ± 4% and varied

  • Influences of high severity fire and postfire logging on avian and small mammal communities of the Siskiyou Mountains, Oregon, USA

    Creator:
    Fontaine, Joseph B.
    Abstract:
    High severity fire is a historical and integral disturbance process in coniferous forest types. Compounded disturbances such as multiple fires or post-disturbance management activities are increasingly common, but ecological responses are not well understood and may represent novel types of disturbances. I studied bird and small mammal communities in the...
    Resource Type:
    Dissertation
    Full Text:
    time intervals included 2-4 years after a single fire, 17-18 years after a single fire, 2-3 years

  • Indirect effects of fishing on predators and their prey

    Creator:
    Stallings, Christopher Derek
    Abstract:
    Predators are fundamentally important for regulating and driving prey population dynamics as well as structuring ecological communities. Over-exploitation of marine resources has caused dramatic depletions of predatory fish species and shifts in marine community composition, with attendant declines in productivity and diversity of marine ecosystems. Despite the important ramifications of...
    Resource Type:
    Dissertation
    Full Text:
    diversity (H’= ∑ (pi ln pi)), (3) evenness (J = H’/ln S), and (4) rarified richness (Gotelli and

  • Molecular investigation of the cnidarian-dinoflagellate symbiosis and the identification of genes differentially expressed during bleaching in the coral Montipora capitata

    Creator:
    Hauck, Laura L.
    Abstract:
    Cnidarians, such as anemones and corals, engage in an intracellular symbiosis with photosynthetic dinoflagellates. Corals form both the trophic and structural foundation of reef ecosystems. Despite their environmental importance, little is known about the molecular basis of this symbiosis. In this dissertation we explored the cnidariandinoflagellate symbiosis from two perspectives:...
    Resource Type:
    Dissertation
    Full Text:
    subtracted library on a DNA microarray platform ……………………….. 58 Chapter 4: Transcriptome analysis

  • Ultraviolet radiation as an environmental stressor of amphibians

    Creator:
    Bancroft, Betsy A.
    Abstract:
    My thesis explored the effects of and potential mediating mechanisms for an important environmental stressor, ultraviolet-B (UVB) radiation. UVB radiation has negative effects on organisms in both terrestrial and aquatic systems. I used meta-analysis to quantify the effects of UVB radiation on a diversity of aquatic organisms (Chapter 2). UVB...
    Resource Type:
    Dissertation
    Full Text:
    at three different amphibian habitats (Chapter 4). Larvae did not avoid UVB radiation in either