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Filtering by: Alternative title ssim Report no. 74-16 Remove constraint Alternative title ssim: Report no. 74-16 Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering Rights Statement Copyright Not Evaluated Remove constraint Rights Statement: Copyright Not Evaluated

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  • Evaluation of estuarine channel conditions in Coos Bay, Oregon using side-scan sonar

    Creator:
    Hartman, Gregory L.
    Abstract:
    Side-scan sonar records in Oregon's Coos Bay estuary navigation channels were obtained at intervals of two to three months during the November 1974 - October 1975 time period from Coos Bay Channel Mile 11+50 to 15+20, and from a reach in the Marshfield Channel. A limited side-scan survey effort was...
    Resource Type:
    Masters Thesis
    Full Text:
    SCIENCE (Name) (Degree) in CIVIL ENGINEERING presented on 16 April 1976 (Major Department) (Date) Title

  • Chromium (VI) sorption in soils : chemical behavior and solute transport modeling

    Creator:
    Schroth, Martin Herbert
    Abstract:
    Chromium spills on soils are causing severe groundwater contamination problems. To increase the performance of cleanup methods, the chemical behavior of chromium in soils and its transport through soils have to be understood. The objectives of this research were to investigate the sorption characteristics of chromium(VI) in soil and to...
    Resource Type:
    Masters Thesis
    Full Text:
    Pore volume Initial pH Extractant no ml conc. mg/1 4 24.3 14.6 7.00 Distilled water 16 Analytical

  • Random wave forces on cylinders

    Creator:
    Hsu, Ming-kuang
    Abstract:
    The in-line force power spectrum is predicted by the frequency domain maximum force coefficient [C[subscript μn](z,f[subscript n])] vs. Keulegan-Carpenter number [K[subscript n] (z,f[subscript n])] relationship. The frequency domain Keulegan- Carpenter number is defined as the velocity from the amplitude spectrum at f divided by the respective frequency and diameter of...
    Resource Type:
    Dissertation
    Full Text:
    16, 1986. Title: Random Wave Forces on Cylinders Abstract approved: Redacted for Privacy John H

  • Development of the simplified method to evaluate dynamic mechanical analysis data on asphalt-aggregate mixtures

    Creator:
    Ab-Wahab, Yunus Bin
    Abstract:
    Testing of asphalt binders and asphalt-aggregate mixtures using dynamic mechanical analysis is becoming popular with improvements in high-speed computers, precision equipment, and computer software. Researchers are trying to describe the behavior of asphalt binders and asphalt-aggregate mixtures in terms of their time- and temperature-dependent linear viscoelastic behavior. The objectives of...
    Resource Type:
    Dissertation
    Full Text:
    degree of Doctor of Philosophy in Civil Engineering presented on February 16. 1993. Title: Development

  • Analysis of dichotomous response models for low-dose carcinogenic risk estimation

    Creator:
    Tabesh, Taraneh
    Abstract:
    Several dichotomous-response models of carcinogenesis are discussed and their implications for low-dose risk estimation are examined. In addition, a pharmacokinetic model incorporating non-linear kinetics is studied and the results are investigated with respect to multiple-pollutant exposures. None of these models appears to suggest the existence of "thresholds". The analysis of...
    Resource Type:
    Masters Thesis
    Full Text:
    in Civil Engineering presented on August 16, 1983. Title: ANALYSIS OF DICHOTOMOUS RESPONSE MODELS

  • Finite element analysis of wave-structure interactions in the time domain

    Creator:
    Lee, Jaw-fang
    Abstract:
    The time-domain simulation of wave-structure interactions using the finite element method is presented in this study. Combined initial and boundary value problems for diffraction and radiation of waves by large structures are posed. Linearized free surface boundary conditions are used, but motions of the structural boundaries compared to the wave...
    Resource Type:
    Dissertation
    Full Text:
    Philosophy in Civil Engineering presented on December 16, 1986. Title: FINITE ELEMENT ANALYSIS OF WAVE

  • Radon-222 as a tracer for performance assessment of NAPL remediation technologies in the saturated zone : an experimental investigation

    Creator:
    Gottipati, Sarayu
    Abstract:
    Persistence of Non aqueous phase liquids (NAPLs) in the subsurface at residual saturations eventually contributes to undesirable groundwater contamination. Proper characterization of subsurface NAPL, its location, composition and distribution, is essential for the chosen remediation technology to be effective. It is also desirable to assess the performance of remedial actions...
    Resource Type:
    Masters Thesis
    Full Text:
    Sarayu Gottipati for the degree of Master of Science in Civil Engineering presented on January 16, 1996

  • Modeling estuary pollution by computer simulation

    Creator:
    Grenney, William J.
    Abstract:
    A digital computer model was developed to simulate the time and space distribution of a dissolved pollutant in an estuary. The program is basically a one-dimensional finite-difference model, but two dimensions can be represented by attaching together several one-dimensional channels. The influence of convection, dispersion and decay are included in...
    Resource Type:
    Masters Thesis
    Full Text:
    Other Methods 10 GENERAL MODEL 12 General Structure 1 2 Water Quality Model 16 Sources and Sinks 19

  • Adsorption of hexavalent and trivalent chromium to a clayey silt soil : batch kinetic and equilibrium studies

    Creator:
    Bean, Gregory R.
    Abstract:
    Chromium, an element of widespread use, is toxic in some forms. Improper disposal of waste chromium products has resulted in contamination of many sites throughout the United States, including the United Chrome Products Superfund site in Corvallis, Oregon. A better understanding of chromium chemistry is needed to facilitate the remediation...
    Resource Type:
    Masters Thesis
    Full Text:
    ) Chemistry 9 2.3 Cr(III) Chemistry 16 2.4 Oxidation/Reduction Chemistry 21 2.5 Adsorption Models 22 3

  • Indirect parameter identification algorithm in radial coordinates for a porous medium

    Creator:
    Roley, Kenneth L.
    Abstract:
    The decision to bury high level nuclear wastes in deep geological formations led to the study of the Hanford Nuclear Reservation as one of three possible sites for the first nuclear waste repository in the United States. To adequately evaluate the environmental impact of siting nuclear waste repositories in basalt...
    Resource Type:
    Masters Thesis
    Full Text:
    Scale). 16 3.1 Example of Possible Time Dependent Pumping Rates. 34 32 Comparison Between Infinite