Digital Commons Network^™

A Preliminary Investigation Of Physical-Chemical Treatment Of Slagging Gasifier Aqueous Effluent, Kirk B. Hird

Theses and Dissertations

The feasibility of treating slagging gasifier wastewater by physical-chemical means was studied. Pretreatment and treatment flow schemes were developed by using batch and continuous tests. Results were based mainly on wastewater residual total organic carbon (TOC). A treatment facility was designed and economically evaluated.

It was found that slagging gasifier wastewater is treatable by physical-chemical means using activated carbon and chemical oxidation as the two principal treatment steps. A pretreatment scheme consisting of lime addition, ammonia stripping, and recarbonation-coagu- lation was found to sufficiently purify the raw gasifier liquor so that activated carbon adsorption and chemical oxidation could be applied …

21st Rocky Mountain Conference On Analytical Chemistry

Rocky Mountain Conference on Magnetic Resonance

Abstracts and meeting program from the 21st annual meeting of the Rocky Mountain Conference on Analytical Chemistry, co-sponsored by the Rocky Mountain Section of the Society for Applied Spectroscopy and the Rocky Mountain Chromatography Discussion Group. Held in Denver, Colorado, July 30 - August 1, 1979.

An Integrated System Employing Alternate Technologies For Liquid And Solid Waste Managment For Intermediate And Small Communities, George Tchobanoglous, John E. Colt, Robert G. Smith, Samuel A. Vigil

Civil and Environmental Engineering

Over the past 20 years , a variety of alternative, and in many cases innovative, technologies have been proposed for use in waste management systems. If alternative technologies are to be adopted they must, 1) be technologically feasible, 2) minimize the use of energy and resources, 3) maximize the recovery of the energy and nutrients contained in wastewater, 4) be cost-effective, and 5) not be unnecessarily disruptive of the existing order in their implementation. Although a number of the proposed technologies have met some or all of these requirements , few of them have been widely adopted. The principal reason …

Application Of Packed Bed Gasifiers To The Reduction Of Solid Wastes And The Recovery Of Energy, Samuel A. Vigil, George Tchobanoglous, Edward D. Schroeder

Civil and Environmental Engineering

No abstract provided.

A Survey Of Structural Identification Techniques, Doris Evelyn Miller

Mechanical Engineering ETDs

This work is a collection and survey of system identification methods in the open literature. The motivation for the work was to find suitable methods of system identification for use in structural diagnosis. Methods surveyed include those which identify the system in terms of modal parameters, and those which identify the system either nonparametrically or in terms of arbitrary parameters. Both deterministic and stochastic methods are reviewed. Particular emphasis is placed on determining damping coefficients, and on a formulation known as modal synthesis. It is concluded that stochastic methods are better suited to the problem of structural diagnosis, and that …

Assessment Of Corrosion And Scaling In A Low Temperature Geothermal System, David Bruce Orrell

Chemical and Biological Engineering ETDs

The feasibility of a low temperature geothermal system to be located in the area immediately surrounding Albuquerque, New Mexico, was assessed with respect to corrosion and scaling. Theories of corrosion and scaling were explored and an extensive literature survey was performed to predict trends and apply design criteria and guidelines regarding corrosion and scaling from other geothermal environments to the proposed geothermal installation in Albuquerque. A recirculating corrosion test loop was built, and fifteen metals were tested for general corrosion resistance in seawater at 190° F and 3 ft/sec flow velocity. Results show this test procedure to be viable and …

Acuta Enews July 1979, Vol. 8, No. 7

ACUTA Newsletters

President's Message

Party Line

Keynote Speaker Captain James A. Lovell

Atlanta Information

ACUTA CONFERENCE 1979 - OR HOW TO GET HERE FROM THERE

MOUTH OF THE SOUTH'

BITS & PIECES

VIRGINIA VIEW

Employee Attitude Invariance: A Guide For Personnel Practitioners, Robert A. Cohen

Retrospective Theses and Dissertations

No abstract provided.

A Microcomputer Implementation Of A Flight Simulator Visual Display System, Jerry Wayne Campbell

Retrospective Theses and Dissertations

The use of computer graphics has brought about a universal means of depicting phenomena or solving engineering problems. The combination of graphic and computer skills offers a solution to a number of technical needs. One major area that computer graphics can be used is in the field of flight simulation. The software packages necessary to project three-dimensional scenes for flight training are not very common. The purpose of this paper is to generate the programs necessary to allow the pilot to observe a three-dimensional scene from any location and angle. The report discusses some of the basic aspects of computer …

The Economics Of Solar Water Heaters : A Guide For Evaluating The Cost-Effectiveness Of Active Solar Water Heating Systems In Maine, Maine Office Of Energy Resources

Maine Collection

The Economics of Solar Water Heaters : A Guide for Evaluating the Cost-Effectiveness of Active Solar Water Heating Systems in Maine

State of Maine, Executive Department, Office of Energy Resources,

Augusta, Maine (July, 1979).

Contents: Section I: Introduction / Section II: Economic Method: The Life Cycle Cost Analysis / Section III: Factors Affecting the Decision to Buy / Section IV: Explanation of the Tables / Table I - Table IIIA

Software Quality Assurance, Edward C. Soistman

Retrospective Theses and Dissertations

The problems associated with software development and use are investigated from a management point of view. Having identified the critical aspects of effective software management, an approach is suggested for the creation and implementation of a software quality assurance program, Particular attention is focused on the concept of Life Cycle Procurement as currently utilized by the Department of Defense. The research was accomplished in two phases. The first consisted of an extensive literature search, seminar attendance and participation in several working groups assigned the responsibility for establishing software quality assurance guidelines. The second phase involved direct participation in the development …

Delineation Of Stop-Sign Approaches, Kenneth R. Agent

Kentucky Transportation Center Research Report

The objective of this study was to use new types of delineation at a stop approach to determine if drivers could be made more aware of the "Stop" situation ahead. The treatments involved post delineators, raised markers, and transverse striping placed at various spacings in advance of the "Stop" signs. Speeds were measured 200 feet (61 m) and 1,200 feet (366 m) in advance of the "Stop" sign. Brakelight distances were also recorded.

The various delineations provided significant reductions in speeds. Post delineators in combination with transverse stripes were the most effective. No significant difference was found between results obtained …

Properties Of A Coaxial Cw Co₂ Laser, T.-K. Cheng Ken, Lee W. Casperson

Electrical and Computer Engineering Faculty Publications and Presentations

A cw CO₂ laser has been developed in which the active medium is formed by a discharge between coaxial electrodes. The laser gain and saturation properties have been studied as functions of the various device parameters. Over-all efficiency is about the same as for a conventional longitudinal discharge laser, and advantages of the coaxial geometry include low voltage operation, rapid cooling, and rugged construction.

The Development Of Quiet Jet Engine Technology, Bradley D. Beck

Retrospective Theses and Dissertations

The physical properties and subjective characteristics of sound and several special methods of measuring sound levels are discussed in order to provide a basic understanding of sound in general and noise in particular. The Federal Aviation Administration's regulation, FAR36, which stipulates the allowable perceived noise levels produced by commercial jet aircraft, is examined in detail. The principle of jet propulsion, the basic components of turbojet and turbofan engines, the theory of aerodynamic sound and the origin of the perceived noise decibel (which is the basic unit for measuring aircraft noise) are presented to provide an understanding of the fundamentals of …

Treatment Process Variations To Reduce Tthm Residuals In A Finished Water, Edward L. Hatcher

Retrospective Theses and Dissertations

This research investigates organic polymers, inorganic coagulants and separate unit operations for their effect on the total tri-halogenated (TTHM) residuals in a finished water. The water samples utilized for this project were taken from a highly colored Central Florida potable water supply which is used by municipality which has a TTHM concentration in the finished water in excess of the proposed Federal limit. Results indicate that (1) organic polymers are not a significant source of THM precursors, (2) organic polymers, when used as a settling aid after coagulation in Jar tests, are an effective means of filtration for removing THM …

Direct Relation Between Fresnel’S Interface Reflection Coefficients For The Parallel And Perpendicular Polarizations, R. M.A. Azzam

Electrical Engineering Faculty Publications

We have found a significant relation, r_p = r_s (r_s -cos2ϕ)/(1-r_s cos2ϕ), between Fresnel’s interface complex-amplitude reflection coefficients r_p and r_s for the parallel (p) and perpendicular (s) polarizations at the same angle of incidence ϕ. This relation is universal in that it applies to reflection at all interfaces between homogeneous isotropic media collectively and, of course, throughout the electromagnetic spectrum. We investigate the properties of this function, r_p = f (r_s), and its inverse,r_s = g (r_p), as …

Cost-Effectiveness Of Lane And Shoulder Widening Of Rural, Two-Lane Roads In Kentucky, Charles V. Zegeer, Jesse G. Mayes

Kentucky Transportation Center Research Report

The purpose of the study was to determine the cost-effectiveness of widening lanes and shoulders on rural, two-lane roads. Information concerning geometries, accidents, and traffic volumes was obtained for over 15,000 miles (25,000 km) of roads. Reductions in accident rates occurred as lane and shoulder widths increased. Run-off-road and opposite direction accidents were the primary accident types associated with narrow lanes and shoulders. Reductions in accidents ranged from 10 to 39 percent for lane widening and 6 to 21 percent for shoulder widening. Priority listings were prepared for 531 projects based on critical rate factor. Priority listings were also prepared …

Development Of Warrants For Left-Turn Lanes, Kenneth R. Agent

Kentucky Transportation Center Research Report

Warrants for the installation of separate left-turn lanes were developed. Literature was reviewed, and policies and practices in other states were surveyed. Accident analyses of locations with and without separate left-turn lanes were conducted. Computer simulation was used to determine the relationship between and among traffic delay and load factor and traffic volume, percent left-turns, cycle length, and cycle split. The relationship between left-turn accidents and conflicts was investigated.

Warrants were developed involving the following three general areas: (1) accident experience, (2) volumes (based on delay), and (3) traffic conflicts.

Statewide Survey Of Skid Resistances Of Pavements (1978), Rolands L. Rizenbergs, James L. Burchett

Kentucky Transportation Center Research Report

Statewide survey of skid resistances continued in 1978 with the testing of 2,943 miles (4,736 km) of state primary roads and 2,405 miles (3,870 km) of state secondary roads. About 10 percent of both the state primary mileage and the state secondary mileage had an average skid number of 28 or less. These pavements, in pariticular, should be considered for de-slicking.

In 1977 and 1978, 35 percent of the mileage of rural, state-maintained roads in Kentucky were surveyed. These roads carried 87 percent of all traffic on rural, state-maintained roads.

Continuous Fractionation Of Protein Mixtures By Ph-Parametric Pumping, Yuk-Wei Wong

Theses

Continuous pH-parametric pumping separations of a haemoglobin - albumin - CM Separose system were experimentally investigated. The parapump system has a feed, containing the protein mixture to be separated, introduced alternately to the top and bottom of the chromatographic column. The top and bottom products are withdrawn from the apparatus during the bottom and top feed respectively. It is shown that under certain conditions the pH-driven parametric pump has the capacity for removal of a protein component from one product fraction and large enrichment in the other fraction. Moreover, the continuous process can be operated with a large feed throughput.

Noise Pollution In The Industrial Arts Laboratory, James A. Sundell

Graduate Research Papers

Industrial arts instructors have always recognized the need for a pleasant and safe environment in their laboratories. Advancements in technology have increased noise pollution in this environment.

Sounds have a useful and important place in the laboratory; also, they can have adverse effects. The instructor can tell immediately if a machine is not performing correctly by the sound it emits, while the operation of the same machine can distort an important verbal communication. Excessive decibel levels may be generated at different times threatening the psychological and physiological well-being of teachers and students (Brown, 1979; Hicks, 1973; Swogger, 1973).

Reduction of …

Test 1319: International 3388 And 6388 Diesel 16-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Relations Between Amplitude Reflectances And Phase Shifts Of The P And S Polarizations When Electromagnetic Radiation Strikes Interfaces Between Transparent Media, R. M.A. Azzam

Electrical Engineering Faculty Publications

No abstract provided.

Test 1318: White 4-210 Field Boss Diesel 18-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Periodate Oxidations Of Aminoglycosides, Araxy M Deronian

Archived Theses and Dissertations

No abstract provided.

Acuta Enews June 1979, Vol. 8, No. 6

ACUTA Newsletters

In This Issue

PRESIDENT'S MESSAGE

LETTER TO THE EDITOR

PARTY LINE

BITS & PIECES

VIRGINIA VIEW

MOUTH OF THE SOUTH

Careers In Air Pollution Control, Harold M. Cota

Civil and Environmental Engineering

No abstract provided.

Maintaining A Septic Tank System, Elbert C. Dickey, Gary Hosek, Phillip W. Harlan

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Once a septic tank and absorption field are installed, you can do several things to prolong their life, thus protecting an investment which may cost $2500 or more. Here are several tips you can follow.

Often overlooked or neglected is the fact that septic tanks should be inspected at least once annually. In every properly functioning septic tank, sludge accumulates in the bottom. This sludge is composed of solid materials and must be removed periodically. If the sludge is not removed, the accumulated solids will build up in the septic tank and will begin to wash out into the absorption …

A Septic Tank System For Sewage Treatment, Elbert C. Dickey, Phillip W. Harlan, Gary Hosek

Department of Agricultural and Biological Systems Engineering: Faculty Publications

A properly designed, installed ao1d maintained septic tank system is an approved method of sewage treatment for private residences in rural or urban areas where public sewage treatment systems are not available. The components of a septic system are the house sewer, the septic tank and the absorption field, as illustrated in Figure 1. Sewage flows to the septic tank through the house sewer. In the septic tank, the solids are separated from the liquids, undergo anaerobic digestion and are stored as sludge at the bottom of the tank. The liquid (septic tank effluent) flows to the absorption field …

Bulletin - June, 1979, Civil Aviation Medical Association

Browse all Civil Aviation Medical Association Newsletters

An eight page newsletter of the Civil Aviation Medical Association. The newsletter provided news about civil aviation medicine and information related to the organization.