Engineering Commons^™

Electric Power Engineering Education National Trends, J. Derald Morgan

Electrical and Computer Engineering Faculty Research & Creative Works

At a time when energy issues are of great importance and the Power Industry has an increasing demand for the best young minds available to solve its problems, trends have developed that suggest possible future problems for Power Engineering Education. This paper reviews these national trends. Copyright © 1978 by The Institute of Electrical and Electronics Engineers, Inc.

Solar-Cell Design Based On A Distributed Diode Analysis, Jack L. Boone, Thomas P. Van Doren

Electrical and Computer Engineering Faculty Research & Creative Works

The front surface of a p-n junction solar cell has resistive losses associated with the diffused layer, the metal-semiconductor contact, and the grid structure. These losses are analyzed by considering the spatially distributed nature of the p-n junction and the grid conductors. This distributed diode analysis is especially useful for solar cells operated under concentrated sunlight conditions. The results show the dependence of the V-I characteristics and the maximum power output per unit cell on the ratio of the diffused layer resistance to the junction dynamic resistance. This ratio can assist the designer in establishing proper grid structure geometries and …

Vehicle Detection Using A Magnetic Field Sensor, Stanley V. Marshall

Electrical and Computer Engineering Faculty Research & Creative Works

The measurement of vehicle magnetic moments and the results from use of a fluxgate magnetic sensor to actuate a lighting system from the magnetic fields of passing vehicles is reported. A typical U.S. automobile has a magnetic moment of about 200 A-m2(Ampere-meters2), while for a school bus it is about 2000 A-m2. When the vehicle is modeled as an ideal magnetic dipole with a moment of 200 A-m2, the predicted results from an analysis of the sensor-vehicle geometry agree closely with observations of the system response to automobiles. Copyright © 1978 by The Institute of Electrical and Electronics Engineers. Inc.

A Hydrologic Analysis Of The Meramec River Basin, Missouri, Glendon Taylor Stevens Iii

Masters Theses

"The purpose of this study was to develop water budgets for the Meramec River Basin. These budgets, developed from average annual data, are quantitative assessments of the basin's water resources.

On a long-term basis, inflow was approximately balanced by outflow indicating that the system is steady state.

Precipitation was found to be the only substantial source of inflow to the basin and averages about 40 inches per year.

Evapotranspiration was found to be the major source of outflow from the basin. Annually it accounts for about three quarters of the total outflow and averages about 30 inches.

Streamflow was found …

An X-Ray Diffraction Analysis Of The Lacro₃-Laalo₃ Solid Solution Series, Robin Ashley Murphy

Masters Theses

"A crystallographic study was made of powders from the LaCr_1-x Al_xO₃, La_.90(Mg_.05 Cr_1-x Al_x )_.95O_2.83 , and La_1±xCrO₃ systems. The relationships between composition and thermal expansion, electrical conductivity, and vaporization were also investigated. The x-ray diffraction data of the LaCrCO₃ - LaAlO₃ compounds showed the system to form a single phase solid solution for any given sample from the series. The orthorhombic to rhombohedral phase transition was depressed to below room temperature at approximately 13% Al⁺³ substitution"--Abstract, page ii.

Utilization Of Waste Heat From The University Of Missouri Research Reactor., Anek Punyakumleard

Masters Theses

"An analysis has been conducted to determine the economic as well as technical feasibility of using waste heat from the University of Missouri Research Reactor (MURR) to heat the reactor containment building and the associated laboratory building.

Several methods of waste heat utilization were reviewed, including open field agriculture, animal shelter heating, aquaculture, waste water treatment, and space heating. Based on this review, it was concluded that several of these waste heat utilization methods are feasible for the MURR. However, the most practical means of utilizing the MURR waste heat appears to be for space heating in the reactor containment …

Direct Solution Of The Isothermal Gibbs-Duhem Equation For Multicomponent Systems, José A. Martinez-Ortiz, David B. Manley

Chemical and Biochemical Engineering Faculty Research & Creative Works

The numerical solution of the relative volatility form of the isothermal Gibbs-Duhem equation for multicomponent systems Is carried out by a relaxation technique for two ternary systems at five different temperatures. This direct method of solution eliminates calculating and differentiating the excess Gibbs free energy as required by other indirect methods. © 1978, American Chemical Society. All rights reserved.

Ultrasonic Testing For Determining Dynamic Soil Moduli., R. W. Stephenson

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Determination of Dynamic E- and G-Moduli of a Silty Clay Material Was Made by Measuring Directly the Velocity of Both Ultrasonic Longitudinal and Shear Waves Transmitted through the Material. the Equipment, developed at the University of Missouri-Rolla, Allows Dynamic, Nondestructive Testing of Soil Materials to Be Conducted Rapidly and Easily.

The Transition Of An Engineer To An Engineering Manager: The People Problem., Edward Leon Boyd

Masters Theses

“A review of existing literature and a survey of engineering managers are used to determine the work of the engineering manager, the career path leading to an engineering management position, and the skills that should be acquired by the engineer desiring to make the transition to an engineering management position.

The work of the engineering manager, like that of any manager, is getting things done through other people. In advancing to the first formal management position, the engineer usually passes through three career stages: engineer, informal manager, and formal manager. While advancing through these career stages, the engineer must increase …

Development Of A Quadratic Finite Element Solution Of The Convective-Transport Equation., David A. Dillard

Masters Theses

"A quadratic finite element has been developed for the solution of the general three-dimensional convective-transport equation. Inherent instabilities in the numerical solution arise when the convective terms in the governing equation become significant. An application of upwinding techniques to the 20 degree of freedom serendipity element failed to produce acceptable results. Upwinding was applied to the 27 degree of freedom Lagrangian element with good results. Results of the latter element are given for several problems, including a model of a round to round metal forming process"--Abstract p. iii

Measurement Of Poisson's Ratio And Tangent Modulus Of A Loess, Craig Randall Bowers

Masters Theses

"A series of triaxial tests are used to develop mathematical models for tangent modulus and Poisson's ratio for a remolded loessial soil. These two models are then utilized in a finite element computer program to model the behavior of a shallow foundation placed on compacted loess. Different models for Poisson's ratio gave widely varying load settlement curves, however a constant value of .32 gave results very similar to that given by the experimentally developed model. It was found that the model developed for tangent modulus yielded unreasonable results when utilized in the finite element analysis until a limiting value was …

Nucleate Boiling Heat Transfer Of Liquid Nitrogen From Plasma Deposited Polymer Coated Surfaces, Donald L. Warner, Efton Park, Kenneth G. Mayhan

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

In certain cases, nucleate boiling heat transfer from polymerized tetrafluoroethylene coated surfaces was more than five times the rate of heat transfer found for uncoated surfaces at a given temperature difference. It was also found that for the polymer coated surfaces the transition from nucleate to film boiling was much slower than for uncoated surfaces. © 1978.

Student Attitudes Toward The Free Enterprise System, Henry Metzner, Edwin C. Sims

Engineering Management and Systems Engineering Faculty Research & Creative Works

No abstract provided.

Discussion, Ronald A. Kohser

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.

Performance Of A Dual-Range Cloud Nucleus Counter., Darryl J. Alofs

Mechanical and Aerospace Engineering Faculty Research & Creative Works

An Instrument for Measuring the Concentrations of Cloud Condensation Nuclei as a Function of Nucleus Critical Supersaturation (S//c) is Described. in the Range 0. 1% Less Than Equivalent to S//c Less Than Equivalent to 0. 1%, the Instrument is Operated as a Vertical Flow Thermal Diffusion Chamber. in the Range of 0. 016% Less Than Equivalent to S//c Less Than Equivalent to 0. 1%, the Chamber is Operated at 100% Humidity, and the Equilibrium Radii of the Nuclei Are Measured with an Optical Counter. This Paper Presents a Large Body of Data Taken in the Laboratory to Evaluate the Performance …

The Effects Of Certain Impurities And Their Interactions On Zinc Electrowinning, Donald R. Fosnacht

Doctoral Dissertations

“The effects of germanium, antimony, arsenic, cobalt, glue, and free acid concentration were studied on both commercial and synthetic electrolytes. The effects of a single factor and the combined effects of multiple factors were elucidated. The temperature, zinc concentration, and current density were also varied. It was found that the acid concentration was the most critical factor when impurity levels were at normal plant solution concentrations. The ranges where the effect of the impurity became apparent were: greater than 20 ppb for antimony; 40 ppb for germanium; 120 ppb for arsenic; and 7-8 mg/l for cobalt for a solution containing …

Cellulase Production By Fermentation With Trichoderma Viride On Cellulose And Wood Wastes, Nguyen Huu Kho

Doctoral Dissertations

"Cellulase production by the fungus Trichoderma viride QM 6a and the use of this cellulase for cellulose hydrolysis were studied using Solka Floc cellulose and waste wood (oak) as substrates. The fermentation produced higher enzyme concentration solutions with media containing additional amounts of soy peptone and KH₂PO₄.

The kinetics of fermentation in fermentors and shake flasks of Solka Floc and sawdust were investigated, and equations were selected to express the relationship of the rates of growth and enzyme production with cell mass, enzyme concentration and substrate remaining in the media.

Agitation and aeration decrease the enzyme …

Adaptive Control Of A Cloud Simulation Chamber Expansion System, Katiya Greigarn

Doctoral Dissertations

"This dissertation describes the design and construction of a closed-loop computer controlled expansion system for a cloud simulation chamber. The chamber is used to simulate atmospheric phenomena for the study of microphysical processes. In order to accomplish this, the sample gas inside the chamber must be expanded adiabatically. This means the wall temperature and the gas temperature must be made to agree as closely as possible. The wall is cooled by thermoelectric modules, and the temperature is controlled by analog controllers. The gas is cooled by the adiabatic expansion, and the corresponding pressure is controlled by a laboratory minicomputer, a …

Report Of Laboratory Tests And Analytical Sudies Of Structural Characteristics Of Cold-Formed Steel-Joist Floor Systems, J. F. Wiss, P. W. Linehan, R. J. Kudder

American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)

No abstract provided.

Evaluation Of Organic Additives For Use In Zinc Electrowinning, R. C. Kerby, H. E. Jackson, Thomas J. O'Keefe, Yar Ming Wang

Materials Science and Engineering Faculty Research & Creative Works

Organic additives are used extensively in zinc electrowinning to assist in controlling the process. A cyclic voltammetry technique has been developed to provide a rapid, quantitative evaluation of the effectiveness of selected organic additives in minimizing the deleterious effects that impurities, such as antimony, have on zinc deposition. Results have indicated that animal glues are more effective than the other organic additives tested, which included several gums, enzymes, and amino acids, in relation to the current efficiency of zinc production. Of the various animal glues compared in this research, the most effective appeared to have average molecular weights in the …

Dense Chromium Sesquioxide, P. D. Ownby

Materials Science and Engineering Faculty Research & Creative Works

A sintered, fine grained, polycrystalline, essentially fully dense, essentially single phase Cr₂O₃ body is prepared by sintering Chromium Sesquioxide (Cr₂O₃) at essentially the equilibrium oxygen partial pressure (P_O2) for the formation of CrO ₃ from its elements at the sintering temperature. To achieve optimum theoretical density a second metal oxide dopant such as MgO, capable of controlling the grain size, is added. In addition, Cr₂O₃ bodies are rendered more stable, and thus have a longer life, by maintaining over the body an atmosphere which is essentially equilibrium Po, …

The Energy Crisis: The Challenge For Nuclear Regulation, Richard T. Kennedy

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Good morning, Ladies and Gentlemen. It is indeed a pleasure for me to be with you again this year for your annual conference and to see so many familiar faces. Your theme -- "The Energy Crisis: Where Do We Go From Here?" -- is particularly pertinent. And, I am especially honored to be lead-off speaker on a subject of such importance to all Americans.

When I spoke to you last year, I discussed the joint efforts by the NRC and the States to reduce the overlap and duplication in reactor regulation. Today, I want to bring all of you up …

Introductory Remarks, Dudley Thompson

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

No abstract provided.

Energy Conservation And U.S. Farm Production Patterns, Angelos Pagoulatos

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Energy conservation practices in crop production would not substantially reduce energy use. Substantial reductions of energy would imply major structural changes in terms of extensive systems of crop production. The tradeoffs between land and energy for future desired crop outputs are derived.

Stability Of Premixed H₂/O₂/N₂ Combusting Turbulent Jets, H. F. Nelson

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Experimental measurements and theoretical predictions of the stability of hydrogen-air-nitrogen premixed turbulent flames have been carried out. The turbulent flame is theoretically modeled using finite rate chemical kinetics and a well-stirred reactor. The model contains a free parameter, which is evaluated by comparing the theoretical predictions to experimental results. A hydrogen flame stability experiment was carried out and the results were compared to the theory. The theory and experiment were found to agree, if the free parameter in the theory varied as the reciprocal of the turbulent jet radius squared.

The National Solar Energy Research Institute: Function, Organization, And The First Six Months, Dennis R. Costello

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

The role of the Solar Energy Research Institute (SERI) in the national solar program is discussed. A brief history of developments leading to the formation of SERI is included. Functional responsibilities, organization and the current plans for staff and facilities growth are addressed.

Design Optimization For Solar Array Of Multiple Collector Types, Jerry O. Bradley, David Posner, C. E. Bingham

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Methodology is presented for optimizing solar arrays used for heating fluids from ambient to elevated temperatures. The optimal array consists of the appropriate combination of available collector types which delivers the most energy per dollar invested in the array. An example optimization is presented and verified using computer simulation of numerous combinations of collector types.

The Environmental Effects Of Uranium Exploration And Mining, Nicholas H. Tibbs, David L. Rath, Thomas K. Donovan

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Uranium exploration and mining is increasing as the Nation's demand for energy grows. The environmental impacts associated with this exploration and mining are not severe and compare favorably with impacts from the production of other energy resources.

Current State-Of-The-Art Of Electrochemical Batteries From A Users Point Of View, John G. Wolter, John A. Gilbert, James V. Leonard

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

This paper will present a description of some of the battery types (couples) on the market, energy densities, and recycle lives. The possibility that some of these could be used in the transportation industry will be explored. Speculation of future battery development will be discussed.

Life Cycle Costing Of Energy Systems, William R. Baker

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Determination of true costs of ownership and the proper evaluation of savings are extremely important with regard to the purchase of energy efficient systems. It is the purpose of the following paper to discuss the application of the life cycle costing process as applied to the evaluation of capital expenditures.