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  • Variation in communities of ammonia-oxidizing and denitrifying bacteria in Fennoscandian boreal forest soils

    Creator:
    Ghimire, Rama D.
    Abstract:
    The objective of this study was to examine the variation among ammonia-oxidizing and denitrifying communities in soils of a natural Fennoscandian boreal forest and of a forest with a long history of fertilization with different levels of nitrogen (N), and to examine whether there are any changes in the microbial...
    Resource Type:
    Masters Thesis
    Full Text:
    thesis reader, and an inspiration in many ways, and my Graduate Council Representative Dr. William M

  • Functions and regulation of cytokinin glucosyltransferases

    Creator:
    Pineda Rodó, Albert
    Abstract:
    Cytokinins can be conjugated to N- and O-glucosides. While N-glucosylation generally leads to irretrievable loss of activity, O-glucosides are thought to play an important role in cytokinin storage and homeostasis since they can be hydrolyzed to the corresponding aglycones. The first zeatin O-glycosyltransferase genes isolated were ZOG1 and ZOX1 from...
    Resource Type:
    Dissertation

  • Identifying candidate genes associated with cold adaptation in Douglas-fir using DNA microarrays

    Creator:
    Howe, Dana Kathryn
    Abstract:
    In forest trees from temperate and boreal regions, cold acclimation is an important adaptive trait that involves changes in gene expression and physiology. Genecological, quantitative genetic, and QTL studies have been used to study the genetics of cold acclimation in Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), but the genes responsible for...
    Resource Type:
    Masters Thesis
    Full Text:
    . William Proebsting, for their time and insight. I would also like to thank Dr. Hayes for the

  • Riparian litter inputs to streams in the central Oregon Coast Range

    Creator:
    Hart, Stephanie K.
    Abstract:
    Riparian zone vegetation can influence terrestrial and aquatic food webs through variations in the amounts, timing, and nutritional content of leaf and other litter inputs. Differences in vegetation composition and density, as well as riparian topography, may modulate the strength and quality of these inputs. Changes in inputs to small...
    Resource Type:
    Masters Thesis
    Full Text:
    . Deciduous site vertical litter inputs (504 g m-2 yr-1 (95% CI: 447-562)) were estimated to exceed those

  • Impacts of Climate Change on Fuel Management Decisions and Implications for Fire Risk

    Creator:
    Kato, Nozomi
    Abstract:
    Private forest owners face an increasing risk of economic damage from extreme wildfires as the climate becomes warmer and drier. This thesis empirically estimates the influence of climate on private forest owners’ management decisions using plot-level data in the Pacific states of the U.S. Econometric models are specified where the...
    Resource Type:
    Masters Thesis
    Full Text:
    including an element of Bayesian analysis and Dr. William Jaeger, for providing thoughtful insights on how

  • Generalized radix design techniques for low-power, low voltage pipelined and cyclic analog-digital converters

    Creator:
    Sharma, Vivek
    Abstract:
    This thesis proposes a novel technique for the design of pipelined and cyclic ADCs utilizing generalized radix gain stages. Several models have been proposed for the optimization of high performance pipelined ADCs by various researchers. This work builds upon them, using a simple but accurate model to estimate the optimal...
    Resource Type:
    Masters Thesis
    Full Text:
    never have materialised. I also want to thank Prof. Huaping Liu, Roger Traylor and Prof. William M

  • A Multi-Tiered Approach Using Daphnia magna to Assess Chlorpyrifos Risk to Aquatic Receptors

    Creator:
    Maggio, Stephanie A.
    Abstract:
    Chlorpyrifos (CPF) is a widely used broad-spectrum organophosphate insecticide. Following exposures, CPF and its more toxic oxon metabolite (CPFO) elicit neurotoxic effects by inhibiting the activity of the acetylcholinesterase enzyme (AChE), resulting in altered fitness and death at high doses. Following exposure, organisms bioactivate CPF to CPFO through the Cytochrome...
    Resource Type:
    Dissertation

  • On the Topologies of Moduli Spaces of Polygons: A Taxonomic Approach

    Creator:
    Krughoff, Stephen A.
    Abstract:
    Consider a polygon lying in the Euclidean plane with labeled edge lengths. The moduli space of polygons is the space of all polygons with the same labeled edge lengths, modulo orientation preserving isometries. It is well known that this space is generically a smooth manifold. For certain combinations of edge...
    Resource Type:
    Dissertation
    Full Text:
    polytope P Hp(f) The Hessian of f : M → R at p ∈M Pn The subspace of P̄n of unit perimeter n-gons Sn The

  • Characterization of a Transgenic Mouse for Human Cytochrome P450 1B1 (CYP1B1)

    Creator:
    You, Hyekyoung Hannah
    Abstract:
    Cytochrome P450 1B1 (Cyp1B1) is a xenobiotic metabolizing enzyme, responsible for polycyclic aromatic hydrocarbon (PAH) oxidative metabolism. CYP1B1 metabolically activates several species of environmentally relevant procarcinogenic PAHs to reactive carcinogens. PAHs are aryl hydrocarbon receptor (AhR) agonists, leading to CYP1B1 upregulation. Though CYP1B1 is highly conserved across species, wild type...
    Resource Type:
    Honors College Thesis
    Full Text:
    Environmental and Molecular Toxicology/Linus Pauling Institute William M. Baird, Committee Member

  • Synthesis and study of transparent p- and n-type semiconductors and luminescent materials

    Creator:
    Park, Cheol-Hee
    Abstract:
    New transparent p- and n-type semiconductors and luminescent materials have been prepared and characterized. Synthesis, structures, optical and electrical properties of new chalcogenide fluoride p-type transparent semiconductors MCuQF (M=Ba, Sr; Q=S, Se, Te) are described. Band-gap tuning and improvement in conductivity through p-type doping are demonstrated in the family. The...
    Resource Type:
    Dissertation
    Full Text:
    members: Dr. Janet Tate, Dr. John F. Wager, Dr. Wei Kong, and Dr. William M. Hetherington for many