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Filtering by: Committee Member McDowell, E. D. Remove constraint Committee Member: McDowell, E. D. Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • 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:
    committee members Drs. Jonathan D. Istok, Kenneth J. Williamson, and Philip E. Humphrey. Funding for this

  • Electron donor and chlorinated ethene effects on activity and community composition in anaerobic reductively dechlorinating consortia

    Creator:
    Sabalowsky, Andrew R.
    Abstract:
    This research focused on anaerobic transformation of trichloroethene (TCE), a groundwater contaminant. The mixed anaerobic Evanite culture (EV) was studied to determine community behavior and composition responses to different electron donors and chloroethene electron acceptors. The potential toxicity from high concentrations of TCE and its daughter product cis-1,2-dichloroethene (cDCE) was...
    Resource Type:
    Dissertation
    Full Text:
    Cl HH C C VC H Cl HH C C ETH H H HH C C H2 (2 e-) Cl-, H+ H2 (2 e-) Cl-, H+ H2 (2 e

  • 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:
    in nonfundamental quantities. d) Results are test-dependent quantities. e) Most tests operate in a

  • On Undular Bores and Solitary Waves in Variable Depth

    Creator:
    Knowles, Jeffrey N.
    Abstract:
    Numerical results are presented using a higher-order pseudo-spectral method in order to solve the Zakharov-Craig-Sulem formulation of the Euler model. We study the effects of variable bathymetry on weakly-dispersive, weakly-nonlinear, shallow water waves. Improved predictions on wave amplitude and shoaling behavior are developed by analytical means in the context of...
    Resource Type:
    Dissertation
    Full Text:
    = 1.28, (d) t = 1.92, (e) t = 2.55, (f) t = 3.19, (g) t = 4.79, and (h) t = 6.39

  • Modeling sediment transport, channel morphology and gravel mining in river bends

    Creator:
    Nam, Ilgi
    Abstract:
    A technique is developed and tested to analyze the interaction of flowing water, bed topography, and bedload sediment transport in meandering channels where gravel bars are removed. The method relates the local velocity distribution, bed shear stress and sediment transport conditions to the local bed configuration in river bends before...
    Resource Type:
    Dissertation
    Full Text:
    the members of my graduate committee, Professors David A. Bella, Jonathan D. Istok, Robert E. Wilson

  • Interaction of water waves and deformable bodies

    Creator:
    Broderick, Laurie L.
    Abstract:
    A time-domain model was developed to predict the fluid/structure interaction of a three-dimensional deformable body in a fluid domain subject to long-crested finite amplitude waves. These nonlinear waves induce transient motion in the body. In turn, the interaction of the body with the waves modifies the wave field, causing additional...
    Resource Type:
    Dissertation
    Full Text:
    depth D body diameter (used in Chapter 1) ead3 strain tensor E Young's modules Fi concentrated loads