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Filtering by: Subject Commerce -- Environmental aspects Remove constraint Subject: Commerce -- Environmental aspects Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • Assessing the effectiveness and environmental impacts of using natural flocculants to manage turbidity

    Creator:
    Kegley, Laura J.
    Abstract:
    The objective of this research was to determine the feasibility of using chitosan as a natural flocculant to control turbidity during in-stream construction work. A series of field tests in Oak Creek, Corvallis, OR were conducted in order to test the effectiveness for turbidity control and the environmental impacts of...
    Resource Type:
    Masters Thesis
    Full Text:
    and Environmental Impacts of Using Natural Flocculants to Manage Turbidity Abstract Approved: Dr

  • Evaluating dairy waste management systems ̓influence on fecal coliform concentration in runoff

    Creator:
    Grismer, Mark Edward
    Abstract:
    This paper examines the environmental factors influencing the die-off and transport of fecal coliform bacteria present in wastes applied to the land surface. These factors are examined specifically for dairy waste management systems and the net effect each system has on runoff water quality. A model is developed that considers...
    Resource Type:
    Masters Thesis
    Full Text:
    Runoff Redacted for privacy Abstract approved: Jam's A. Moore This paper examines the environmental

  • Nitrate and pesticide transport under pear production in clay and sandy soil

    Creator:
    Cao, Weidong
    Abstract:
    Groundwater contamination on irrigated land is of concern in this nation and around the world. In order to reduce the potential of groundwater contamination by agricultural practices such as irrigation, fertilizer and pesticide application, vadose-zone monitoring and sampling are needed. The main objective of this study was to evaluate impacts...
    Resource Type:
    Masters Thesis
    Full Text:
    transport has increased during the last few decades. Environmental and economic concerns have inspired the

  • Uranium and technetium bio-immobilization in intermediate-scale permeable reactive scale barriers

    Creator:
    Sapp, Mandy M.
    Abstract:
    Groundwater at Oak Ridge National Laboratory's Field Research Center (FRC) is contaminated with U(VI) and Tc(VII), has pH values as low as 3.3, and nitrate concentrations as high as 120 mM. The objective of this research was to determine if in-situ bio-immobilization is a viable treatment alternative for this water....
    Resource Type:
    Masters Thesis
    Full Text:
    . Environmental Health Considerations 5 1 .5.Treatment of Radionuclide Contaminated Groundwater 7 1.6

  • Hydraulic experiments on impact forces from tsunami-driven debris

    Creator:
    Ko, Harrison T.
    Abstract:
    Impact by an idealized shipping container on a column were observed for tsunami flow in a large-scale wave flume modeled at the O.H. Hinsdale Wave Research Laboratory at Oregon State University. Two specimen types, aluminum and acrylic, were tested; and each specimen was tested in two orientations, longitudinal and transverse....
    Resource Type:
    Masters Thesis

  • Metal and organic emissions from RDF and large volume contributor combustion

    Creator:
    Lee, Taejin, 1961-
    Abstract:
    The use of municipal refuse (RDF) as fuels has received widespread attention for reason of its energy equivalence and the increasing lack of available landfill sites. The principal obstacle to the construction of combustion facilities is that RDF produces toxic compounds, including heavy metals and such organic compounds as PCDD...
    Resource Type:
    Masters Thesis
    Full Text:
    engineering, environmental, and economic concerns, including the rising costs of traditional fuels, scarcity

  • Assessment of Environmental Impacts of Wood Substitution in Commercial Construction

    Creator:
    Milaj, Kristina
    Abstract:
    In the residential sector, wood is the predominant construction material. In the commercial sector and in mid‐rise construction, the use of wood is limited because of a multitude of reasons, including building code restrictions, the perception of wood as a structural material, fire code requirements, and lack of knowledge and...
    Resource Type:
    Masters Thesis
    Full Text:
    . Title: Assessment of Environmental Impacts of Wood Substitution in Commercial Construction. Abstract

  • Analysis of waves in the near-field of wave energy converter arrays through image processing

    Creator:
    Black, Colleen
    Abstract:
    Oregon State University conducted a series of laboratory experiments to measure and quantify the near-field wave effects caused within arrays of Wave Energy Converters (WEC). As the waves and WECs interact, the WECs generate radiated waves; these effects vary with the location within the array. Analyzing the near-field waves will...
    Resource Type:
    Masters Thesis
    Full Text:
    aspect of the experiment will be explained in the following sections. 2.1.1 Equipment Columbia

  • Estuarine sediment controls on trace metal distributions

    Creator:
    Davies-Colley, Robert J.
    Abstract:
    Sediments are the major compartment in aquatic environments for many materials of toxic or nutrient concern. The lack of knowledge of the phase associations of toxic metals in sediments is the largest deficiency in our understanding of the environmental hazard posed by metal contamination. This study examined the sedimentary partitioning...
    Resource Type:
    Dissertation
    Full Text:
    understanding of the environmental hazard posed by metal contamination. This study examined the sedimentary

  • A model for simulation of subsurface transport of highway-related water quality constituents

    Creator:
    Hesse, Edwin Todd
    Abstract:
    A spreadsheet-based transport model was developed in Microsoft Excel™ as part of a six-year National Cooperative Highway Research Program project conducted at Oregon State University. The model simulated the leaching, transport, removal, and retardation processes that occur in the surface and subsurface pathways of the near highway environment. For all...
    Resource Type:
    Masters Thesis
    Full Text:
    , & Environmental Engineering Dean of the Grahufe School I understand that my thesis will become part of the