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Filtering by: Publisher Corvallis Oregon State University Remove constraint Publisher: Corvallis Oregon State University Decade 1990-1999 Remove constraint Decade: 1990-1999 Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • A model for the prediction of biologically mediated reductive dechlorination pathways

    Creator:
    Cozza, Cynthia L.
    Abstract:
    The environment has been exposed to a number of hazardous chlorinated organic compounds. These compounds may be anaerobically biotransformed by sequential reductive dechlorination reactions in which the chlorine atoms are replaced with hydrogen atoms. Because reductive dechlorination processes may occur very slowly in the environment and chlorine position affects the...
    Resource Type:
    Masters Thesis
    Full Text:
    Pathways by Cynthia L. Cozza A Thesis Submitted to Oregon State University In partial fulfillment of

  • Chaotic response and stability of offshore equipment

    Creator:
    Lin, Huan
    Abstract:
    This investigation deals with the chaotic rocking response and overturning stability of offshore equipment subjected to base excitations due to wave-induced motions of the supporting compliant offshore structural system. The equipment compliant structural system is modelled as a free-standing rigid object subjected to horizontal and vertical base accelerations. Three of...
    Resource Type:
    Masters Thesis
    Full Text:
    Huan Lin A 'THESIS submitted to Oregon State University in partial fulfillment of the requirements

  • A numerical model for the fate and transport of chlorinated phenols in groundwater

    Creator:
    Lee, Sang Bong
    Abstract:
    The objective of this study was to develop a numerical model for the movement and fate of chlorinated phenols in groundwater. In the first part, a numerical model for several different equilibrium and nonequilibrium sorption processes under isothermal conditions is developed for one-dimensional, steady-state water flow in soil columns. The...
    Resource Type:
    Dissertation
    Full Text:
    Lee A THESIS submitted to Oregon State University in partial fulfillment of the requirements for

  • Collection and analysis of evaporative flux data for various climates

    Creator:
    Katul, Gabriel
    Abstract:
    Daily evaporative flux and meteorological data from three sites were collected and analyzed. Analysis included evaluation of several reference evapotranspiration estimating methods which were theoretically based on distinct physical laws. The estimating methods included pan evaporation, energy-based Priestly-Taylor, and combination methods with and without biological adjustments. The data set represented...
    Resource Type:
    Masters Thesis
    Full Text:
    THESIS Submitted to Oregon State University in partial fulfillment of the requirements for the degree

  • Biodegradation of chlorinated methanes using a methylotrophic/anaerobic biofilm reactor

    Creator:
    Celeste, Stephen J.
    Abstract:
    Chlorinated low molecular weight solvents have been discovered in a number of the nation's groundwater supplies. Remediation of these aquifers will require some form of treatment. Presently, the dominant treatment method is air stripping which results in transfer of the solvent from the aqueous phase into the atmosphere. Biodegradation is...
    Resource Type:
    Masters Thesis
    Full Text:
    submitted to Oregon State University in partial fulfillment of the requirements for the degree of Master

  • Measurement of the rates of reductive dechlorination of chlorinated phenols

    Creator:
    Nicholson, David K.
    Abstract:
    Knowledge of a compound's degradation pathway is crucial to the assessment of risk at contaminated sites. Pentachlorophenol and its metabolic products can serve as model compounds to study the fate and transport of halogenated aromatic compounds in the environment. Acclimation of anaerobic sewage sludge to pentachlorophenol produced a microbial consortium...
    Resource Type:
    Masters Thesis
    Full Text:
    submitted to Oregon State University in partial fulfillment of the requirements for the degree of Master

  • Development of a mechanistic overlay design procedure for flexible pavements

    Creator:
    Zhou, Haiping
    Abstract:
    This dissertation describes the development of a mechanistic overlay design procedure. The mechanistic analysis represents a new trend in both new pavement and overlay design. The greatest advantage of the mechanistic pavement analysis is that it considers the fundamental characteristics of materials to be used, is capable of considering changes...
    Resource Type:
    Dissertation
    Full Text:
    Zhou A Thesis submitted to Oregon State University in partial fulfillment of the requirements for

  • A mathematical model for adsorptive bubble-separation processes

    Creator:
    T'ang, Li
    Abstract:
    Adsorptive bubble-separation processes are used to remove adsorptive contaminants from wastewater. A mathematical model was developed for the adsorptive bubble separation processes in a countercurrent column. The model included an assumption that linear adsorption of the solute occurred on the gas bubbles. Predictions indicated that aqueous column height has less...
    Resource Type:
    Dissertation
    Full Text:
    submitted to Oregon State University in partial fulfillment of the requirements for the degree of Doctor

  • Substratum-aerated-biofilm reactor for treatment of carbonaceous and nitrogenous wastewaters

    Creator:
    Abdel-Warith, Ahmed S.
    Abstract:
    This study involves the development of a biofilm reactor that supports growth of a deep biofilm on a gas permeable membrane. The reactor solution is not aerated, and oxygen is supplied through the membrane. The reactor is termed a substratum-aerated-biofilm reactor or SAB. With adequate concentrations of electron-donors and electron-acceptors,...
    Resource Type:
    Dissertation
    Full Text:
    Oregon State University in partial fulfillment of the requirement for the degree of Doctor of

  • Watershed modeling at Yucca Mountain, Nevada

    Creator:
    Britch, Michael J.
    Abstract:
    Studies are currently underway to determine the suitability of Yucca Mountain in Nevada as the nation's first high-level nuclear waste repository. Values of net infiltration are required to determine pre-waste emplacement groundwater travel times and the performance of the repository as a waste containment system. The objective of this study...
    Resource Type:
    Masters Thesis
    Full Text:
    . Britch A THESIS submitted to Oregon State University in partial fulfillment of the requirements for