Index Catalog // ScholarsArchive@OSU

Evaluation of techniques for on-farm monitoring of percolation and irrigation system performance

Creator:: Louie, Michael J.
Abstract:: Efficient use of water in agricultural production involves accurate assessment and control of the quantity and spatial uniformity of excess percolation. Passive Capillary Samplers (PCAPS), which sample water from the vadose zone have shown potential to provide superior estimates of soil water flux compared to alternative methods. In a four-year...
Resource Type:: Masters Thesis
Full Text:: Master of Science in Bioresource Engineering and Civil Engineering presented on January 6, 1998. Title

Predicting nitrate concentrations in leachate resulting from land application of wastewater onto various crop systems including poplars

Creator:: Motte, Marie Quitterie
Abstract:: Land application of industrial wastewater with high levels of nitrogen requires adequate management practices to prevent groundwater pollution by nitrates. In this study a predictive computerized model was developed for nitrate leachate concentrations resulting from land application of wastewater onto crop systems including poplars. The study included a literature review,...
Resource Type:: Masters Thesis
Full Text:: THESIS OF Marie Quitterie Motte for the degree of Master of Science in Civil Engineering presented on

Simulating the effects of a capillary barrier using the two-dimensional variably saturated flow model SWMS-2D/HYDRUS-2D

Creator:: Heiberger, Thilo Stefan
Resource Type:: Masters Thesis
Full Text:: degree of Master of Science in Civil Engineering presented on May 20, 1996. Title: Simulating the

Non-convective ion movement in unsaturated porous media

Creator:: Kelly, Shaun Francis
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE THESIS OF Shaun F. Kelly for the degree of Doctor of Philosophy in Civil Engineering

Water content and electrical conductivity profile measurements for dispersive media using enhanced time domain and frequency domain models

Creator:: Flugstad, Benjamin A.
Abstract:: Water conservation and water quality are rapidly increasing in importance in all areas of the world. The ability to accurately measure soil water content and salinity, over a wide variety of conditions, is key to meeting this need. A set of forward prediction models and waveform interpretation algorithms to extract...
Resource Type:: Dissertation
Full Text:: and Ecological Engineering Head of the Department of Biological and Ecological

Thermodynamics of non-dilute saline solutions in variably saturated porous media

Creator:: Burns, Erick R.
Abstract:: Non-dilute salt strength solutions occur in many near surface geologic environments. In order to better understand the occurrence and movement of the water and salt, mathematical models for this non-ideal fluid need to be developed. Initial boundary value problems may then be solved to predict behavior for comparison with observations....
Resource Type:: Dissertation
Full Text:: , representing Bioresource Engineering He'Y of the Department of Bioengineering Dean of the 'Graduate School I

Infiltration and temperature characterization of a wastewater hyporheic discharge system

Creator:: Stewart, Ryan D.
Abstract:: The Clean Water Act imposes Total Maximum Daily Load (TMDL) limits on pollutant concentrations within wastewater effluent; in Oregon, thermal discharge is one of the pollutants subject to regulation. The City of Woodburn, Oregon, funded a series of pilot scale studies to investigate the utility of natural systems to reduce...
Resource Type:: Masters Thesis
Full Text:: of Master of Science in Water Resource Engineering presented on February 16, 2010. Title

Evaluation of bioluminescence as a measure of bacterial cell density in porous media

Creator:: Uesugi, Sandra L.
Abstract:: Salicylate-induced, lux gene dependent bioluminescence was measured using a cooled charge-coupled device (CCD) camera to evaluate its potential as a quantitative measurement of cell density of Pseudomonas fluorescens HK44 in porous media. The CCD camera was able to detect bioluminescence from cell densities between 1x10⁶ and 1x10⁸ cells/ml in both...
Resource Type:: Masters Thesis
Full Text:: Science in Soil Science and Bioresource Engineering presented on June 14, 2000. Title: Evaluation of

Assessment of variability and monitoring methods for leaching under cover crop management

Creator:: Hess, Mario
Abstract:: The contamination of ground water resources represents a serious problem and a prominent threat to the health of our society. This study focuses on the leaching of inorganic anions as a function of agricultural practices under natural field conditions. In order to enhance the understanding of such leaching processes, this...
Resource Type:: Masters Thesis
Full Text:: Science in Bioresource Engineering presented on May 16, 1995. Title: Assessment of Variability and

Determining contact angle of solutions with varying surface tension on dry and pre-wetted silica sands

Creator:: McGinnis, Thomas L.
Abstract:: Infiltration of highly concentrated solutions into unsaturated sand is suspected to be affected by the liquid-gas interfacial tension between the resident water and that of the infiltrating solution. The wetting of non-porous solid surfaces by liquids is commonly quantified by contact angle measurements. However, it is well known that wettability...
Resource Type:: Masters Thesis
Full Text:: degree of Master of Science in Bioresource Engineering presented on November 6, 2001. Title: Determini

ScholarsArchive@OSU

Evaluation of techniques for on-farm monitoring of percolation and irrigation system performance

Predicting nitrate concentrations in leachate resulting from land application of wastewater onto various crop systems including poplars

Simulating the effects of a capillary barrier using the two-dimensional variably saturated flow model SWMS-2D/HYDRUS-2D

Non-convective ion movement in unsaturated porous media

Water content and electrical conductivity profile measurements for dispersive media using enhanced time domain and frequency domain models

Thermodynamics of non-dilute saline solutions in variably saturated porous media

Infiltration and temperature characterization of a wastewater hyporheic discharge system

Evaluation of bioluminescence as a measure of bacterial cell density in porous media

Assessment of variability and monitoring methods for leaching under cover crop management

Determining contact angle of solutions with varying surface tension on dry and pre-wetted silica sands

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