Index Catalog // ScholarsArchive@OSU

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

Ecological Consequences of Marine Debris: Understanding Large-Scale Species Transport on Tsunami Debris and Research Priorities in Oregon

Creator:: Gillman, Reva A.
Abstract:: The release of marine debris into the oceans and seas is a global issue of growing concern. These materials are harmful to marine environments and can also transport non-native species to novel habitats. Non-native species floating on marine litter is one of the lesser known impacts associated with marine debris....
Resource Type:: Masters Thesis
Full Text:: . Therefore, I characterized the distributional, environmental, and life history traits of the species

Nitrate leaching and model evaluation under winter cover crops

Creator:: Minshew, Hudson F.
Resource Type:: Masters Thesis
Full Text:: Agricultural production can have significant impacts on environmental quality. Understanding the underlying

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

Limiting copper loss from treated wood in or near aquatic environments

Creator:: Mitsuhashi Gonzalez, June M.
Abstract:: Copper migration from treated wood has created concerns within the environmental community because of the potential effects of this heavy metal on aquatic organisms. Migration can be limited, to some extent, by more controlled treatments and by post-treatment processing, but these actions cannot completely overcome the problem. An alternative approach...
Resource Type:: Masters Thesis
Full Text:: environmental community because of the potential effects of this heavy metal on aquatic organisms. Migration

Use of Targeted and Non-Targeted Analysis to Study Complex PAH Environmental Mixtures

Creator:: Chibwe, Leah
Abstract:: Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous contaminants formed from the incomplete combustion of organic material. These contaminants are of concern because of their widespread presence in the environment and toxic properties. In addition, PAHs encompass a class of diverse compounds with varying physicochemical properties and exist in the environment as...
Resource Type:: Dissertation
Full Text:: Environmental Mixtures. Abstract approved

Report on a port-based project to reduce marine debris

Creator:: Recht, Fran
Abstract:: Plastic waste in the oceans is now recognized as a serious threat to marine life and a pollution problem with economic consequences for mariners and coastal states. Annex V of MARPOL, effective December 1988, is an international treaty which prohibits signatory nations from disposing of any plastic material into the...
Resource Type:: Capstone Project
Full Text:: Administration, the Environmental Protection Agency, and the U.S. Coast Guard. PROJECT BACKGROUND The NMFS

Poly- and perfluorinated alkyl substance release from landfills and landfill model reactors

Creator:: Allred, Brent McKay
Abstract:: Research and public concern of poly and perfluoroalkyl substances (PFASs) as environmental contaminants has increased significantly due to the increasing number of reports of their detection in humans and wildlife. PFASs have a number of commercial applications including surfactants, coatings, polymers, and levelers, which are used on consumer products like...
Resource Type:: Dissertation
Full Text:: Research and public concern of poly and perfluoroalkyl substances (PFASs) as environmental contaminants

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

Biomass and nutrient dynamics associated with deforestation, biomass burning and conversion to pasture in a tropical dry forest in Mexico

Creator:: Steele, Michael D.
Abstract:: The effects of deforestation and biomass burning in tropical dry forests (TDF) remain a little studied phenomenon. We quantified total aboveground biomass (TAGB), carbon and nutrient (N,S,Ca,P,K) loss under two separate fire severity scenarios; one early when the fuels were higher in moisture content, one later when the slash fuels...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

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

Ecological Consequences of Marine Debris: Understanding Large-Scale Species Transport on Tsunami Debris and Research Priorities in Oregon

Nitrate leaching and model evaluation under winter cover crops

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

Limiting copper loss from treated wood in or near aquatic environments

Use of Targeted and Non-Targeted Analysis to Study Complex PAH Environmental Mixtures

Report on a port-based project to reduce marine debris

Poly- and perfluorinated alkyl substance release from landfills and landfill model reactors

Hydraulic experiments on impact forces from tsunami-driven debris

Biomass and nutrient dynamics associated with deforestation, biomass burning and conversion to pasture in a tropical dry forest in Mexico

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