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Filtering by: Creator Guthrie, Jno. D. Remove constraint Creator: Guthrie, Jno. D. Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • Effect of vertical compressive stress on shear strength of wood beams

    Creator:
    Mandery, William Lee
    Resource Type:
    Dissertation
    Full Text:
    and his countless suggestions during its preparation. Dr. Donald Guthrie for his assistance with

  • 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:
    Sewage Sludge 35 D Boyd & Shelton (1984) DCP, CP Sludge fresh and 37 4.7 D Acclimated w/CPs Guthrie et

  • Improving Region-Scale Landslide Inventory and Susceptibility Mapping

    Creator:
    Bunn, Michael D.
    Abstract:
    Landslides are a natural hazard that have major societal, economic, and environmental impacts. The understanding of landslides begins with the observation that they are a spatial problem. Spatial relationships have historically been explored with maps, and landslides are no different. Such maps range in focus from inventory maps, which identify...
    Resource Type:
    Dissertation
    Full Text:
    hillshade and contour maps derived from the original DEM (A,B,D,E), and contour maps produced from the

  • Environmental Regulations Reconsidered : Identifying Incentives and Barriers to Environmental Performance

    Creator:
    Craig, Kathleen D.
    Abstract:
    Attention has been drawn to the observation that environmental benefits under the current regulatory approaches are diminishing with respect to increased pollution control costs. Regulators have begun to appreciate that while environmental gains can still be achieved under the current command and control system, the most significant environmental gains have...
    Resource Type:
    Masters Thesis
    Full Text:
    incentives and barriers to environmental performance AN ABSTRACT OF THE THESIS OF Kathleen D. Craig for

  • 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

  • Aerobic degradation of chlorophenols

    Creator:
    Wang, Gongming
    Abstract:
    Chlorinated phenols are toxic compounds and often released into natural environments from improper disposal or non-point sources. One important factor in assessing the environmental fate and transport is the rates of microbial degradation in soils and natural waters. In this study, eight chlorophenols (4-chlorophenol (4-CP), 2,4-dichlorophenol (2,4-DCP), 3,4-dichlorophenol (3,4-DCP), 3,5-dichlorophenol...
    Resource Type:
    Masters Thesis
    Full Text:
    Chlorophenols 33 B. Experimental Protocol 44 C. Acetylation/Extraction Protocol 46 D. Gas Chromatograph Protocol

  • Factors affecting the adsorption of heavy metals by activated sludge bacteria

    Creator:
    Conlin, Mary F.
    Resource Type:
    Masters Thesis
    Full Text:
    exceed this. Copper toxicity to aquatic organisms has been studied by Singleton and Guthrie (1977) to

  • Demonstration of a permeable barrier technology for the in-situ bioremediation of pentachlorophenol contaminated groundwater

    Creator:
    Cole, Jason David
    Abstract:
    A pilot scale demonstration of a biological permeable barrier was conducted in a pentachlorophenol-contaminated aquifer at a wood preserving facility. A permeable reactor was constructed to fit within a large diameter well. Arranged in series, a cylindrical reactor 24" x 36" (0.61 x 0.91m) (diameter x height) was partitioned to...
    Resource Type:
    Dissertation
    Full Text:
    ......................................................................... 232 Appendix D Measurement of Reactor Environmental Conditions: Flow Cells

  • 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:
    - methoxybenzoic acid) and guaiacol (o-methoxyphenol) demethylation (Wise, 4 1988). Similarly, 2,4-D and 2,4,5

  • Use of benthic sediments as indicators of marina flushing

    Creator:
    Noble, Scott Morgan
    Abstract:
    This report presents the findings of a sediment analysis program formulated to determine the flushing potential of various shaped small boat marina basins. Chemical tests regarding volatile solids, Kjeldahl nitrogen, grease and oil, and sulfides were performed with the results compared to established sediment quality criteria. These results were used...
    Resource Type:
    Masters Thesis
    Full Text:
    Moderate w c.) E C High d "4-1C, bA $-tCO Varies Heavy Metal Form Q Sulfides 4,0 R Adsorbed (T)..i E