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Filtering by: Creator Giesen, Thomas William Remove constraint Creator: Giesen, Thomas William Degree Name Master of Science (M.S.) Remove constraint Degree Name: Master of Science (M.S.)

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  • Four centuries of soil carbon and nitrogen change after severe fire in a Western Cascades forest landscape

    Creator:
    Giesen, Thomas William
    Abstract:
    Fire is a major disturbance process in many forests. Long-term studies of the biogeochemical effects of fires, especially on soils, are very rare. Consequently, long-term effects of fire on soils are often hypothesized from short-term effects. In a chronosequence study, I studied 24 western Cascades (Oregon) forest stands thought to...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Thomas William Giesen for the degree of Master of Science in Forest

  • Nature in chains : the effects of Thomas Jefferson’s rectangular survey on a Pacific Northwest landscape

    Creator:
    Schweickert, Tina K.
    Abstract:
    Understanding the impact of humans on the environment has long been a topic of scholarly interest and debate. As environmental problems mount, accounts of historic ecological conditions and the factors of change become increasingly useful. This study considers competing schools of interpretation about human impacts on ecological landscapes and develops...
    Resource Type:
    Masters Thesis
    Full Text:
    , 2009. Title: Nature in Chains: The Effects of Thomas Jefferson’s Rectangular Survey on a Pacific

  • The Thomas Kay Woolen Mill in Salem, Oregon, 1900-1959

    Creator:
    Gertenrich, Caryl
    Abstract:
    The Thomas Kay Woolen Mill once manufactured cloth with a reputation renowned throughout the United States. This study is an attempt to report the history of the mill. Data are categorized by: the Kay family; production including plant, machinery, raw materials used, goods manufactured; management including the effects of national...
    Resource Type:
    Masters Thesis
    Full Text:
    THOMAS KAY WOOLEN MILL IN SALEM, OREGON, 1900-1959 Abstract approved: Redacted for Privacy Ruth E

  • Distributed temperature sensing with neodymium-doped optical fiber

    Creator:
    Lounsbury, Jimson S.
    Abstract:
    Polymer electrolyte membrane (PEM) fuel cells are being studied for use as high efficiency power plants in alternative fuel vehicles. To maintain high efficiency the operating temperatures of the membranes in these fuel cells must be closely monitored and controlled. However, the environment inside of the fuel cell is not...
    Resource Type:
    Masters Thesis
    Full Text:
    : _______________________________________________________________ Thomas K. Plant Polymer electrolyte membrane (PEM) fuel cells are being studied for use as

  • A georeferenced digital image analysis of micro-topographic patterns within the Willamette Floodplain Research Natural Area, W. L. Finley National Wildlife Refuge

    Creator:
    Anderson, Karen L.
    Abstract:
    The present day vegetation pattern of the Willamette Valley is a result of a long past of human alteration of the landscape. Beginning with aboriginal burning of the grasslands to present day land uses, the vegetation of the valley has been affected by anthropogenic activity. Wet prairie is a vanishing...
    Resource Type:
    Capstone Project

  • The effects of inbreeding in a flock of Hampshire sheep

    Creator:
    Lamberson, William Russell
    Abstract:
    A registered flock of Hampshire sheep that had been predominantly closed for approximately 30 years was utilized to study the effects of inbreeding on productivity of the 1980 and 1981 lamb crops. Five generation pedigrees for ewes and rams were used to calculate inbreeding coefficients. The median inbreeding coefficient of...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF William Russell Lamberson for the degree of Master of Science in

  • Toward a continuous culture of bumble bees (Bombus Latr.)

    Creator:
    Seibert, Thomas Floyd
    Abstract:
    Out of 53 queens captured for initiating colonies in the laboratory, 33 laid eggs (62 percent), 29 of these produced colonies (55 percent), and 14 produced queens (26 percent). A behavioral model depicts the activities of queens from spring emergence through colony development. A discussion of its application to bumble...
    Resource Type:
    Masters Thesis
    Full Text:
    .) AN ABSTRACT OF THE THESIS OF Thomas F. Seibert for the degree of Master of Science in Entomology

  • Sheep breed evaluation : grazing behavior, condition scores and lamb production

    Creator:
    Berggren-Thomas, Bruce
    Abstract:
    I. The Effects of Sire Breed, Forage Availability and Weather on the Grazing Behavior of Crossbred Ewes. Thirty nonpregnant, nonlactating crossbred ewes, six per sire breed (Suffolk, Clun Forest, Dorset, Polypay and Border Leicester), were observed grazing together in a 0.87 ha grass-clover pasture for six days over a two-week...
    Resource Type:
    Masters Thesis
    Full Text:
    scores and lamb production AN ABSTRACT OF THE THESIS OF Bruce Berggren-Thomas for the degree of Master

  • Dynamic modeling of a refrigerant boiler for power applications

    Creator:
    Curry, Thomas Haitsch
    Abstract:
    A dynamic model of a refrigerant boiler has been produced by the use of distributed parameter modeling techniques. A number of elementary cases were studied and were used as an aid in the final model formulation. Modeling using distributed parameters employed the use of mesh equations which were then reorganized...
    Resource Type:
    Masters Thesis
    Full Text:
    applications AN ABSTRACT OF THE THESIS OF Thomas Haitsch Curry for the degree of Master of Science in

  • Characterization of Oregon-derived malo-lactic bacteria : fermentation properties and storage stability

    Creator:
    Dohman, Thomas Philip
    Abstract:
    Gram positive cocci isolated from Oregon wines were characterized and their relative malate fermentation abilities compared. They were heterofermentative, catalase negative, and facultatively anaerobic. Glucose, fructose, cellobiose, maltose, ribose, trehalose, salicin and esculin were fermented by all strains. Arabinose was fermented weakly but lactose, raffinose, sucrose, xylose, rhamnose, mannose and...
    Resource Type:
    Masters Thesis
    Full Text:
    : fermentation properties and storage stability AN ABSTRACT OF THE THESIS OF THOMAS PHILIP DOHMAN for the