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Salt Loading From Efflorescence And Suspended Sediments In The Price River Basin, David S. Bowles, Hooshang Nezafati, Rao K. Bhasker, J. Paul Riley, R. J. Wagenet

Reports

Salinity control is a major component of water management in arid climates and irrigated areas and one of particular concern in the Colorado River Basin. The alts enter the water as it flows over land or moves through the soil or geologic formations. The principal salt collection processes are 1) dissolution from the soil surface during runoff events, 2) transpiration of soil water leaving salt residuals, 3) efflorescence left by evaporating seepage and then dissolved by subsequent runoff, 4) dissolution with weathering of fixed bed channels, 5) salts released by sediments entering the channel from sheet, gulley, and bank erosion, …

Energy Impacts Of Water Based Recreation, J. Clair Batty, David A. Bell, E. Bruce Godfrey, Craig Howell, J. Paul Riley, Thomas C. Stoddard

Reports

The overall objective of the study reported here was to determine to what extent energy accounting could supplement and/or complement economic benfit/cost analyses of water management projects and to specifically examine the energy impacts of water based recreation. The energy accounting literature was carefully reviewed and an energy accounting methodology applicable to water management was devised. Data pertaining to receation at five reservoirs in Utah were assembled from visitation recoreds and on-site surveys. Energy requirements for site construction, travel to and from the recreation site, and recreation at the site were estimated. It was determined that energy devoted to water …

Predicted Limnology Of The Proposed Ridges Basin Reservoir, Lawrence A. Baker, V. Dean Adams

Reports

A limnological evaluation was conducted for the offstream Ridges Basin Reservoir proposed by the Bureau of Reclamation in southwest Colorado. The study required the determination of existing water quality in the source river and use of the information to predict the algal standing crop, hypolimnetic oxygen deficity, Secchi disk transparency, and retention of metals in the proposed reservoir. A water quality study was conducted between May 1977 and August 1978. Samplse were collected from the Animas River, which will provide the inflow to the proposed reservoir, and from the La Plata River, which will receive discharge from the reservoir. Samples …

The Water Requirements And Pollutant Potential In The Gasification Of Carbonaceous Shales, Jeffery A. Cissell, V. Dean Adams, Joel E. Fletcher, Daniel S. Filip, Dennis B. George

Reports

A laboratory-scale, batch operated gasifier was used to evaluate the heating value, process and cooling water requirements, and water pollution potential of gasification of carbonaceous shales. These potentially valuable fossil fuels are found over large areas of Southern and Eastern Utah and vary widely in quality depending on the amount of intermixed inorganic material. The results indicate that a synthesis gas, consisting primarily of hydrogen and carbon monoxide, can be produced from carbonaceous shales. The total heating values of the synthesis gas from the carbon shales examined ranged from 4 to 62 percent of that of coal. The process water …

Development Of Contingency Plans And Scientific Background Studies For Applying Weather Modification During Drought Periods In Utah, David S. Bowles, Marjorie Frantz, Terry Glover, E. Arlo Richardson, Joe L. Sutherland

Reports

A multi-disciplinary study of drought in utah was conducted as a part of the Bureau of Reclamation's Southwest Drought Research Program. The study was administered by the Utah Division of Water Resources. Utah drought was investigated from a variety of viewpoints, including drought climatology, drought meteorology, hydrologic effects of drought, and economic effects of drought. A stand-by wintertime cloud seeding program was designed for all sections of the state. An economics model was then used to determine benfits to the state as a result of the seeding program.

Chemical Mowing: A New Maintenance Concept For Indiana Roadsides : Final Summary Report, D. James Morré

JTRP Technical Reports

No abstract provided.

Effects Of Fertilization Practices During Nursery Production On Mycorrhizal Development By Landscape Plants Used For Highway Revegetation : Interim Report, Stephen Dunning Verkade

JTRP Technical Reports

No abstract provided.

Techniques To Increase Survival Of New Highway Plantings Using Mycorrhizal Inoculation, Stephen Dunning Verkade, David Foster Hamilton

JTRP Technical Reports

No abstract provided.

Equipment For Local Hyperthermia Therapy Of Cancer, Charles F. Babbs, James R. Oleson, John A. Pearce

Weldon School of Biomedical Engineering Faculty Publications

Rapid improvements in hyperthermia apparatus are being achieved by industrial and university-based research groups that have already led to the marketing of a variety of commercial systems for heat therapy of malignancy. These tissue heating systems employ microwaves, capacitively or inductively coupled radiofrequency current, or high intensity ultrasound to produce controlled local heating of tumor tissues. No single system is superior to others in all applications; each has its limitations.

Biology Of Local Heat Therapy For Cancer, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

Successful cancer therapy must selectively destroy tumor tissue while sparing the host's normal tissues. Local heat treatment can have such a selective effect because abnormalities in tumor blood vessels supply less oxygen to heat-stressed tumor cells and are less efficient in cooling tumor tissue by blood perfusion.

Hydralazine-Enhanced Selective Heating Of Transmissible Venereal Tumor Implants In Dogs, William D. Voorhees Iii, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

This study was designed to test the hypothesis that vasodilator drugs can enhance selective heating of solid tumors by producing a favorable redistribution of blood flow between tumor and normal tissues. Subcutaneous transmissible venereal tumor implants were heated by inductive diathermy using Helmholtz coils in 8 dogs. The temperature rise in tumor and adjacent muscle was measured before and after giving hydralazine (0.5 mg/kg i.v.). Blood flow to the tumors and underlying muscle was measured with radioactive tracer microspheres. Before hydralazine treatment mean muscle blood flow was about one-third tumor blood flow (0.11  0.02 vs. 0.28  0.09 ml/min/g), …

Theoretical Feasibility Of Vasodilator-Enhanced Local Tumor Heating, Charles F. Babbs, David P. Dewitt, William D. Voorhees, Janet S. Mccaw, Rosanna C. Chan

Weldon School of Biomedical Engineering Faculty Publications

Normal arterioles, in contrast to the abnormal microvasculature of many solid tumors, provide a target for selective drug action that can enhance local heat treatment of the tumors. Measurements of tissue blood flow with radioactive microspheres and estimates of changes in blood flow with thermal clearance methods revealed that vasodilator drugs either decreased or did not alter blood flow in hamster melanoma, rat hepatoma, and canine transmissible venereal tumor, while increasing perfusion in adjacent normal tissues 2 to 4-fold. Solutions of the bio-heat transfer equation, which take into account such selective effects of vasodilators on blood flow in normal tissues, …

Field Evaluation Of Calibration Accuracy For Pesticide Application Equipment, A. R. Rider, Elbert C. Dickey

Department of Agricultural and Biological Systems Engineering: Faculty Publications

A 1979 field survey was conducted in Nebraska and western Iowa of 152 private and commercial pesticide applicators. The survey showed that only one out of every four cooperators were applying pesticides within 5 percent of their estimated application rate. Incorrect calibration accounted for the greatest amount of application errors and ranged from nearly 60 percent under application to more than 90 percent over application. Uniformity of the application was also in error. The coefficient of variation among nozzles for liquid applicators averaged 21.9 percent whereas granular applicators averaged 4. 7 percent among boxes. The survey also showed that the …

Applied Steady-State And Transient Modeling Of Mixing Zone Requirements In Streams, Alvin Castro

Retrospective Theses and Dissertations

Two existing stream dispersion computer models were applied to a hypothetical stream to analyze mixing zone requirements due to point and non-point discharges. Mixing zone curves were developed to define acceptable and unacceptable regions of stream response for stead-state and transient conditions. The impact on these regions due to varying quantitative and qualitative characteristics of the stream and waste discharges were investigated.

In addition, a sensitivity analysis was conducted on the response of a transient one-dimensional stream dispersion model. A logarithmic linear regression analysis, relating the number of time increments specified to a dimensionless hydrograph shape factor for known storm …

Heavy Metals In Floodplains Receiving Highway Bridge Runoff, Elizabeth T. Skene

Retrospective Theses and Dissertations

A study was supported by SUS/STAR to investigate the fate of heavy metals in bridge runoff which are received by surrounding floodplains. Three bridge sites in Central Florida were selected and various locations in each site were sampled. Soil, plant, and water samples were analyzed for Cd, Zn, Cu, Fe, Pb, Ni and Cr. Statistical analysis of results for heavy metal content of plants and soils at control versus bridge sampling areas were conducted. In agreement with other investigators, Pb was found to be a good indicator of highway pollution in soil, plants and water. Possible mechanisms for metal sorption …

Bioassays- Procedures And Results, A. F. Maciorowski, L. W. Little, Ronald C. Sims, J. L. Sims

Biological Engineering Faculty Publications

Bioassay procedures to describe, evaluate, and predict potential hazard of toxic materials to organisms, ecosystems, and health-related aspects of polluted waters continue to receive widespread attention. However, synthesizing these diverse theoretical, methodological, and procedural entities into an integrated multidisciplinary approach to evaluate environ mental hazards of toxic substances remains difficult. Symposia proceedings pertinent to the toxic substances management in ecosystems have appeared¹ and provide an overview of major problems and emerging solutions, including chapters on new bioassay protocols development, and multiple exposure toxicity paradigms. Conclusions and recommendations resulting from a toxicity testing workshop² discussed current state-of-the-art, identified needed …

Roadside Vegetation Establishment By Seeding Of Herbaceous Species Under Suboptimal Conditions : Interim Report, John B. Masiunas, Philip L. Carpenter

JTRP Technical Reports

No abstract provided.

Trihalomethane Precursor Reduction Using Magnesium Coagulation, Christianne C. Ferraro

Retrospective Theses and Dissertations

This study investigated the effectiveness of the magnesium coagulation process in reduction of trihalomethane (THM) precursors. The water was obtained from Lake Washington, a highly colored potable water supply which is used by the City of Melbourne, Florida. The THM concentrations in the finished water at Melbourne currently exceed the THM standard of 0.1 mg/l. For Lake Washington water, treatment varies according to seasonal changes in water quality. During the dry period, the recycle magnesium does not perform effectively as a coagulant for THM precursor removal. This is because of the high levels of magnesium in the late water at …

Quantitative And Qualitative Responses Of Lake Eola To Urban Runoff, Timothy B. Walsh

Retrospective Theses and Dissertations

For temperate lakes which receive a variable nutrient loading with seasonal variance in their hydrology, it is necessary to consider the dynamic response of the lake to these variable nutrient loadings. An approach to evaluate Lake Eola water quality responses to dynamic discharge of nutrients is presented. The major source of nutrients for this lake is stormwater runoff containing nitrogen and phosphorus. A mass balance of nutrient sources and sinks for the period of one year (April 1980 - March 1981) was performed. To accomplish this, a field determination for various parameters of the hydrologic budget was performed on a …

Impact Of Alum Sludge On Lake Sediment Phosphorus Release And Benthic Communities, David B. Jellerson

Retrospective Theses and Dissertations

Alum sludge from a Tampa water treatment plant was found to significantly reduce phosphorus release from anaerobic bottom sediments. The kinetics of phosphorus uptake by the sludge was evaluated in batch reactors. Further, the impact of the sludge on benthic organisms was determined in aquarium systems. Aquariums were set up with sediments and organisms from various lake habitats. Organisms were allowed to establish themselves and then test aquaria were dosed with alum sludge to cover the sediments. Benthic survival and heavy metal uptake were evaluated. Favorable phosphorus uptake was demonstrated in the batch reactors. The uptake kinetics were found to …

Experimental Investigation Of A Rectangular Surface Thermal Plume, Li-Cheng Chu

Mechanical & Aerospace Engineering Theses & Dissertations

An experimental investigation of the three dimensional mean temperature distribution of a rectangular buoyant surface thermal plume has been conducted for a range of buoyancies, velocity ratios, Reynolds numbers, and for various turbulence generating screens in the crossflow. This study has been motivated by a concern about the applicability of laboratory model data for predicting prototype plume behavior.

A large scale model has been built to study a buoyant, rectangular surface thermal plume which enters at right angles to a constant temperature uniform crossflow of depth equal to that of the plume. A large water tank and flume with weir …

Selective Removal Of Color, Toc, And Thm Precursors From A Highly Colored Recycled Magnesium Sludge Using Granular Activated Carbon, Kathleen O. Gill

Retrospective Theses and Dissertations

The study investigated the ability of granular activated carbon (F-400) to remove organic color, TOCk and THM precursors from a highly organic-laden recycled magnesium sludge without reducing the magnesium concentration. This treatment was attempted in order to render the sludge a more effective coagulant for surface water purification. Adsorption effectiveness was assessed through Freundlich isotherms and continuous-flow GAC columns, with both procedures conducted at three pH values. Color and TOC were adsorbed more effectively at lower pH values, while adsorption of THM precursors was inhibited at low pH. Magnesium was not significantly adsorbed by the carbon. The carbon treatment of …

An Experimental Study Of Comparison Between Ph-Parametric Pumping And Ph-Cycling Zone Adsorption Process On Protein Separation, Vincent P. Jajalla

Theses

In this thesis, an experimental investigation was conducted to compare the performance of the continuous pH-parametric pumping and the pH-cycling zone adsorption process on protein separation.

The model system studied was hemoglobin-water. on CM-Sepharose CL-6B (cation) exchanger in a single-column system. Various modes of operation were tried on both the pH-parametric pumping and the pH-cycling zone adsorption method. The separation factors for each mode of operation were computed and compared.

It is shown that the continuous pH-parametric pumping, with circulation to insure the pH uniformity inside the column, has the better separation factor than the pH-cycling zone adsorption method.

H & V News

Building Services Engineering

No abstract provided.

Vegetative Filter Treatment Of Livestock Feedlot Runoff, Elbert C. Dickey, D. H. Vanderholm

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Four vegetative filters were installed on feedlots in central and northern Illinois. Two configurations were used: channelized Dow and overland Dow. After settling for partial solids removal, runoff was applied directly to the filters and allowed to Dow from the inlet to the outlet section. Results from measurement analyses and sampling of influent, effluent, and surface Dow at intermediate points were reported.

Most runoff events were infiltrated completely, resulting in no filter discharge. Runoff from larger events was partially discharged. Filters removed as much as 95% of nutrients and oxygen-demanding materials from the applied runoff on a weight basis, and …

23rd Rocky Mountain Conference

Rocky Mountain Conference on Magnetic Resonance

Abstracts and meeting program from the 23rd annual meeting of the Rocky Mountain Conference, co-sponsored by the Rocky Mountain Section of the Society for Applied Spectroscopy and the Rocky Mountain Chromatography Discussion Group. Held in Denver, Colorado, August 2-6, 1981.

Mound Sewage Waste Treatment Systems, Elbert C. Dickey, Phillip W. Harlan, Cheryl Kisling-Crouch

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Several areas in Nebraska are not appropriate for onsite home sewage treatment using conventional septic tank absorption field systems. Site factors that limit the use of conventional absorption fields include slowly permeable soils, shallow or gravelly soils and high water tables. The septic tank-mound system, which consists of a septic tank for primary sewage treatment and a constructed mound for final waste treatment was developed to overcome these site limitations (Figure 1).

Although mound systems differ only slightly in principle from conventional sewage systems, they allow the user to select suitable materials to build an absorption field that relies …

Separation Of Proteins Via Continuous Ph Parametric Pumping, Steve Wu

Dissertations

This dissertation covers the separation of proteins via recuperative mode pH parametric pumping. Continuous pH parametric pumping separations using the model system haemoglobin and albumin on a CM-Sepharose cation exchanger have been experimentally and theoretically investigated.

The pH parametric pumping system has a feed containing the protein mixture to be separated, introduced alternately to the top and bottom of the column. The top and bottom products are withdrawn from the apparatus during the bottom and top feed, respectively. Both equilibrium and nonequilibrium cases were considered, and theoretical results agreed with the experimental data.

Buffer concentration, flow rate, reservoir displacement, and …

Mining The Deep Seabed Implications For International Law And American Foreign Policy, Steven H. Fitzgerald

Graduate Program in International Studies Theses & Dissertations

Whether or not the United States may someday face a mineral shortage, the need for a coherent, unified minerals policy is critical to national objectives and national security. Deep-sea mining may be the answer to American (and world) mineral needs in the twenty-first century. However, there are numerous problems which must be dealt with and resolved in the near future, in order to enable the U.S. (and the world community) to take advantage of vast undersea resources. Deep-sea mining requires the development of technology, tremendous capital investments, and years of labor before production can begin. U.S. policy makers must decide …

Simulated Use Of The Exponential Polynomial/Maximum Likelihood Technique In Developing Suitability Of Use Functions For Fish Habitat, Kenneth A. Voos

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to present a new methodology for producing fish habitat suitability at use functions. The suitability functions are relative measures of the voluntary or involuntary preference for combinations of the values of environmental attributes by a fish species and age class. This suitability function is used to determine the relative usability of a physical stream environment as fish habitat.

A generalized function form, exponential polynomials, was selected for the development of these suitability of use functions. The maximum likelihood technique was used for function parameter solution. Derivation of the suitability functions was simulated for several …