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Filtering by: Creator Stewart, James Remove constraint Creator: Stewart, James Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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  • The geochemical partitioning and bioavailability of trace metals in marine sediments

    Creator:
    Oakley, Stewart M.
    Abstract:
    Trace metals in the aquatic environment are generally concentrated on the surface of solid geochemical phases which eventually become incorporated into estuarine and marine sediments. The mechanism of trace metal concentration is believed to be adsorption with various geochemical phases such as hydrous metal oxides, clays, and organic matter. Metals...
    Resource Type:
    Dissertation
    Full Text:
    trace metals in marine sediments 1 AN ABSTRACT OF THE THESIS OF Stewart M. Oakley for the degree of

  • Treatment of activated sludge process effluent by carbon adsorption

    Creator:
    Davis, Stewart Lee
    Abstract:
    An evaluation of the service time of an activated carbon adsorption column and the organic carbon removal efficiency treating activated sludge process effluent was completed at aerator detention times of three, five, and ten hours. Parameters used for evaluation of treatment were biochemical oxygen demand, chemical oxygen demand, total organic...
    Resource Type:
    Masters Thesis
    Full Text:
    adsorption AN ABSTRACT OF THE THESIS OF Stewart Lee Davis (Name of student) in Civil Engineering

  • The control and fate of enteric bacteria in the environment with particular emphasis on the factors influencing fecal indicator survival in waste storage facilities

    Creator:
    Crane, Stuart R.
    Abstract:
    The indiscriminate release of fecal bacteria to the environment can present a public health hazard when pathogenic species gain access to drinking and recreational water sources. The extent of bacterial contamination of surface and ground waters associated with animal production units and waste application areas seems largely dependent on the...
    Resource Type:
    Dissertation

  • A model for simulating river and reservoir temperatures with applications for anadromous fish management

    Creator:
    Currie, James William
    Abstract:
    A problem confronting the Corps of Engineers and other water resources planners in the Pacific Northwest is the prediction of anadromous fish enhancement benefits that would result from a proposed high dam project. These benefits are expected from augmenting natural streamflows with relatively cold reservoir withdrawals. The resulting increased streamflows...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE THESIS OF JAMES WILLIAM CURRIE for the

  • Evaluation and application of ice segregation parameters for frost heave prediction

    Creator:
    Ito, Yuzuru, 1958-
    Abstract:
    The success of civil engineering construction in cold regions often depends on the assessment of the potential for frost heave. Over the past two decades two models have been presented to the engineering community to identify the frost heave potential, namely: (1) the segregation potential (SP), and (2) the discrete...
    Resource Type:
    Dissertation
    Full Text:
    . Kellogg, J. Richard Bell, James R. Lundy, and William G. McDougal, as well as the former graduate

  • Dynamic behavior of silty soils

    Creator:
    Sunitsakul, Jutha
    Abstract:
    The cyclic resistance of predominantly fine-grained soils has received considerable attention following ground and foundation failures at sites underlain by silt-rich soils during recent earthquakes. In several cases substantial ground deformation and reduced bearing capacity of silt soils has been attributed to excess pore pressure generation during cyclic loading. These...
    Resource Type:
    Dissertation
    Full Text:
    -based criterion (Martin et al. 2004, Sancio et al. 2002, Stewart et al. 2002). Stewart et al (2002

  • A torsional investigation of a concrete I grider

    Creator:
    Martin, Roy Charles
    Abstract:
    This paper investigates a particular bridge construction technique which could result in a significant torsional moment. The structural member under consideration is a prestressed concrete girder for which no torsional consideration is made. Torsional shear stresses can be adequately approximated for an I-shaped girder. Laboratory model tests were performed to...
    Resource Type:
    Masters Thesis
    Full Text:
    Code. Proceedings (Journal) of the American Concrete Institute 56:591-618. Cowan, Henry J. and Stewart

  • Fate of ammonia volatilized from a confinement livestock facility

    Creator:
    Hoffman, Eldon Randall
    Abstract:
    A conceptual model was developed to further the understanding of the evolution and fate of volatilized ammonia in the atmosphere. Recent trends in livestock rearing have been toward confinement facilities in which high animal concentrations are maintained. One of the impacts of these facilities has been increased local concentrations of...
    Resource Type:
    Masters Thesis
    Full Text:
    (Stewart, 1970), and approximately 90% of the dry fecal matter is undigested organics of which 60 to 75

  • Aircraft washrack wastes : their characteristics and treatment

    Creator:
    Evans, David Roland
    Abstract:
    Oils, greases, and grit which collect on an aircraft during flight are removed on the U. S. Air Force washracks using an alkaline, water-base cleaner. Waste-flows from these washracks may include in addition to free oils, emulsified oils, and alkaline, water-base cleaners several other constituents such as acid skin brightners,...
    Resource Type:
    Masters Thesis
    Full Text:
    , James Connally AFB. 66 16 Chemical tests, McCoy AFB. 66 17 Chemical tests, Norton AFB. 67 18

  • Effects of soil slope on lateral capacity of piles in cohesive soils

    Creator:
    Nimityongskul, Nontapat
    Abstract:
    Pile supported bridges are typically constructed near or in a natural or man-made slope and are subjected to lateral loading. The current design method for laterally loaded piles involves the use of Winkler's spring concept with the standard nonlinear p-y curves. The available p-y curves were developed based on results...
    Resource Type:
    Dissertation
    Full Text:
    . James Batti and Dr. Tim Maddux for their assistance in providing helpful suggestions in