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Filtering by: Siletz River Estuary, Oregon, United States Remove constraint Siletz River Estuary, Oregon, United States Decade 1980-1989 Remove constraint Decade: 1980-1989 Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • Hydraulic influences on pool morphology : a laboratory investigation

    Creator:
    Frizenschaf, Jacqueline
    Abstract:
    A flume study was conducted to investigate the influences of changing hydraulic conditions on the bed morphology of a scoured pool. During a simulated storm runoff event, responses of the pool were tested under different conditions: clearwater flow, sediment supply at steady rates, and two different sediment mixtures of the...
    Resource Type:
    Masters Thesis
    Full Text:
    MORPHOLOGY A LABORATORY INVESTIGATION by Jacqueline Frizenschaf A THESIS submitted to Oregon State

  • Groundwater flow model for the lower Malheur Basin near Ontario, Oregon

    Creator:
    Walker, David S.
    Abstract:
    The shallow, poorly-confined, sand and gravel aquifer underlying the lower Malheur River basin is contaminated by nitrate and metabolites of the herbicide dimethyl tetrachloroterephthalate (DCPA), first detected in 1983 and 1985, respectively. The aquifer supplies water for the Ontario municipal water system, domestic and industrial uses, and irrigation. In response...
    Resource Type:
    Masters Thesis
    Full Text:
    Environmental Quality (DEQ), the Oregon Water Resources Department (WRD), and Oregon State University (OSU

  • Estuarine sediment controls on trace metal distributions

    Creator:
    Davies-Colley, Robert J.
    Abstract:
    Sediments are the major compartment in aquatic environments for many materials of toxic or nutrient concern. The lack of knowledge of the phase associations of toxic metals in sediments is the largest deficiency in our understanding of the environmental hazard posed by metal contamination. This study examined the sedimentary partitioning...
    Resource Type:
    Dissertation
    Full Text:
    DISTRIBUTIONS by ROBERT JAMES DAVIES-COLLEY A THESIS submitted to Oregon State University in partial

  • Evaluation of cold in-place recycling of asphalt conrete pavements in Oregon

    Creator:
    Scholz, Todd
    Abstract:
    Significant use of cold in-place recycling (CIR) has occurred in Oregon since 1984 as an alternative to other rehabilitation techniques or to the reconstruction of distressed asphalt concrete (AC) pavements. Due to the initial success of the projects cold recycled during 1984-85, the Oregon Department of Transportation (ODOT) and Oregon...
    Resource Type:
    Masters Thesis
    Full Text:
    (ODOT) and Oregon State University (OSU) undertook, in 1986, an intensive study to investigate cold

  • A method of PCB metabolite determination in anaerobic freshwater sediments using a upflow anaerobic biofiltration process (ANBIOF)

    Creator:
    Low, Edmond J.
    Abstract:
    The biodegradation of five polychlorinated biphenyls (PCBs) by Hudson River and Silver Lake sediments was studied using gas chromatography with electron capture detection (GC/ECD) and gas chromatography with mass spectrometry (GC/MS) analyses. Methanogenic sediments from the Hudson River and Silver Lake were used to inoculate four anaerobic filter reactors. The...
    Resource Type:
    Masters Thesis
    Full Text:
    Edmond J. Low A Thesis Submitted to Oregon State University in partial fulfillment of the requirement

  • Analysis of evapotranspiration for various climatic regimes using geostatistics

    Creator:
    Nuss, Jeffery L.
    Abstract:
    Research was conducted to determine the applicability of using the theory of regionalized variables or geostatistics in characterizing the spatial variability of reference evapotranspiration (ETr) over various climatic regimes for the state of Oregon. The state was divided into five climatic regions based on topographic features and local meteorological conditions:...
    Resource Type:
    Masters Thesis
    Full Text:
    ) over various climatic regimes for the state of Oregon. The state was divided into five climatic

  • Chemical characterization of asphalt cements using chromatographic techniques : relation to rheological properties and field performance

    Creator:
    Thenoux, Guillermo
    Abstract:
    This dissertation presents the findings of a literature review and information regarding selection, implementation and development of a chemical composition procedure for asphalt cements. The chemical composition analysis selected was the Corbett-Swarbrick procedure standarized as ASTM D4124. The procedure is a selective adsorption / desorption (solid / liquid) chromatography which...
    Resource Type:
    Dissertation
    Full Text:
    Catolica de Chile. - The United Nations. - International Office, Oregon State University. TABLE OF

  • Evaluation of mix ingredients on the performance of rubber-modified asphalt mixtures

    Creator:
    Takallou, Hossein B.
    Abstract:
    Rubber-modified asphalt pavements have been used in Sweden and the United States since the 1970's. In these applications ground recycled tire particles (0.25 inch minus) are added to a gap-graded aggregate and then mixed with hot asphalt cement. The benefits of adding rubber to the mix include increased skid resistance...
    Resource Type:
    Dissertation
    Full Text:
    R. G. Hicks ' Rubber-modified asphalt pavements have been used in Sweden and the United States

  • Evaluating dairy waste management systems ̓influence on fecal coliform concentration in runoff

    Creator:
    Grismer, Mark Edward
    Abstract:
    This paper examines the environmental factors influencing the die-off and transport of fecal coliform bacteria present in wastes applied to the land surface. These factors are examined specifically for dairy waste management systems and the net effect each system has on runoff water quality. A model is developed that considers...
    Resource Type:
    Masters Thesis
    Full Text:
    submitted to Oregon State University in partial fulfillment of the requirements for the degree of Master

  • Optimization of feeding schedules for coho salmon in the hatchery environment

    Creator:
    Corey, Philip David
    Abstract:
    A growth model is developed for coho salmon which accounts for temperatures and feeding rates typically encountered in fish hatchery operation. Feeding rates utilized by the model ranged from maintenance to maximum utilizable rations. The model is derived from an empirical equation for maximum growth rate, and a theoretical equation...
    Resource Type:
    Dissertation
    Full Text:
    Charles Sow of the Oregon State University Seafoods Laboratory, Astoria, Oregon who performed the