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Filtering by: Committee Member Selker, John Remove constraint Committee Member: Selker, John Rights Statement Copyright Not Evaluated Remove constraint Rights Statement: Copyright Not Evaluated

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Experimental design of physical aquifer models for evaluation of groundwater remediation strategies

Creator:

Humphrey, Mark D.

Abstract:

Groundwater resources have become seriously threatened due to improper use by industrial, municipal, and even public sectors. Widespread contamination of aquifer systems has jeopardized human health and the environment and methods for restoring these systems are needed. Biological and chemical in situ remediation, where contaminants are degraded within the natural...

Resource Type:

Masters Thesis
Implementing best management practices in small commercial and non-commercial animal enterprises

Creator:

Godwin, Derek C.

Abstract:

Small commercial and non-commercial animal enterprises (SCAEs) raise a few beef cows, horses, pigs, sheep, poultry, and other animals on a few acres. These enterprises are often located in suburban areas of watersheds and show potential for degrading water quality through to increased bacterial, nitrogen, and phosphorus concentrations. SCAEs implement...

Resource Type:

Masters Thesis
Evaluation of the environmental conditioning system as a water sensitivity test for asphalt concrete mixtures

Creator:

Allen, Wendy L.

Abstract:

The Environmental Conditioning System (ECS) was designed to evaluate the water sensitivity of asphalt concrete mixtures. The ECS subjects asphalt concrete specimens to a series of conditioning cycles including water flow, elevated and/or lowered temperature, and repeated axial loading. The purpose of this research was to: (1) evaluate the ECS...

Resource Type:

Dissertation
Nitrate and water under terraced dryland wheat production in Oregon

Creator:

Strock, Jeffrey S.

Abstract:

Dry land agriculture using summer fallow is a common crop production practice in the Columbia Plateau region of eastern Oregon. Farmed-over level terraces are used to control surface water runoff and soil erosion. More than 70 percent of the average annual precipitation around Pendleton, Oregon (350 - 400 mm) falls...

Resource Type:

Masters Thesis
Mass transfer constraints on the feasability on in situ bioremediation of contaminated groundwater

Creator:

Fry, Virginia A., 1959-

Resource Type:

Dissertation
Characterizing hydraulics and water distribution of furrow irrigation in northeast Malheur County

Creator:

Mittelstadt, Robert

Abstract:

Furrow irrigation is the dominant practice for irrigating row crops in the western Treasure Valley region near Ontario, Oregon. Though improvements have been made in management practices over the years, excessive runoff and deep percolation are still important problems contributing to surface water and groundwater degradation. Field observations were made...

Resource Type:

Masters Thesis
A kinetic model for dissolved gas transport in the presence of trapped gas

Creator:

Donaldson, Jeremy H.

Abstract:

Understanding the processes involved in the transport of dissolved gas plumes in groundwater aquifers is essential for comprehending the effect that these transport processes can have on site characterization and remedial design applications. Previous laboratory and field studies have indicated that dissolved gas transport in groundwater can be greatly affected...

Resource Type:

Masters Thesis
Simulation of vegetation and hydrology for climate change analysis of a mountain watershed

Creator:

Waichler, Scott R.

Abstract:

Climate change is expected to have both direct and indirect effects on water resources. Hydrologic impacts of two indirect effects, vegetation density and stomata! conductance, are evaluated for the American River, a 200 km² watershed in the Cascade Range of Washington state. First, a set of distributed hydrology-biogeochemistry model structures...

Resource Type:

Dissertation
Seedling recruitment of hairy nightshade and other summer annual weeds in irrigated row crops

Creator:

Peachey, Ronald Edward

Abstract:

This study evaluated the effects of tillage system, rotational tillage sequences, and winter seed burial depth on weed seedling recruitment in irrigated cropping systems. Notill (NT) planting of vegetable crops reduced emergence of hairy nightshade by 77 to 99% and Powell amaranth emergence from 50 to 87% compared to conventional...

Resource Type:

Dissertation
Descriptive analysis of two consecutive vintages of Oregon Pinot noir wines as effected by irrigation, tillage and nitrogen supplementation in the vineyard

Creator:

Hjorth, Heather Byrne

Abstract:

Two vintages of Vitis vinifera cv. Pinot noir wine from a viticulture trial evaluating nitrogen fertilization, tilling and irrigation underwent descriptive analysis using a modified version of free-choice profiling. Wines were made from three field blocks of the twelve factorial combinations of Irrigation (Dry or Irrigated), Tillage (Tilled or not...

Resource Type:

Masters Thesis

Limit your search

Academic Affiliation

Civil Engineering4
Bioresource Engineering3
Crop and Soil Science2
Food Science and Technology1

Advisor

Istok, Jonathan D.3
Cuenca, Richard H.1
English, Marshall J.1
Mcdaniel, Mina R.1
Miner, J. Ronald1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1993 to 2005

View distribution

Committee Member

Selker, John[remove]10
Baham, John2
Warkentin, Benno2
Ball, Daniel A. (Daniel Allen), 1954-1
Bluhm, Wilbur1
more Committee Members »

Creator

Allen, Wendy L.1
Donaldson, Jeremy H.1
Fry, Virginia A., 1959 1
Godwin, Derek C.1
Hjorth, Heather Byrne1
more Creators »

Date

Date range begin – Date range end

Current results range from 1992 to 2004

View distribution

Decade

2000-20093
1990-19997

Degree Field

Civil Engineering4
Bioresource Engineering3
Crop Science1
Food Science and Technology1
Soil Science1

Degree Level

Master's6
Doctoral4

Degree Name

Master of Science (M.S.)6
Doctor of Philosophy (Ph.D.)4

Language

English [eng]10

Non-Academic Affiliation

Oregon State University. Graduate School10

Peer Reviewed

No9

Resource Type

Masters Thesis6
Dissertation4

Rights Statement

Copyright Not Evaluated[remove]10

Subject

Groundwater -- Purification2
Agricultural pollution -- Management -- Oregon -- Tualatin River Watershed1
Animal culture -- Environmental aspects -- Oregon -- Tualatin River Watershed1
Aquifers1
Asphalt concrete -- Mixing -- Evaluation1
more Subjects »

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