Digital Commons Network^™

Dynamic Childbirth Simulator For Teaching Maternity Patient Care, Charles F. Knapp, George S. Eades

Biomedical Engineering Faculty Patents

A programmable patient simulator for teaching maternity patient care includes a life size manikin with a pelvis, vaginal canal, uterus, placenta, umbilical cord, and a fetal doll from which heart sounds are emitted. A programmable electro-pneumatic system controls the simulated uterine contractions, position of the uterus, rupture of membranes, expulsion of fetal doll, and fetal heart rate during labor and delivery sequence.

Vibratory Densification Of Granular Materials, Gurbux Rai Mehdiratta

Civil Engineering ETDs

The densification behavior of 13 different types of materials was investigated by subjecting each material to vertical simple harmonic motion using an electromagnetic vibrator. A total of more than 1000 maximum density tests were performed. The soil parameters investigated were angularity, uniformity coefficient, percentage of fines and specific gravity. The vibration parameters investigated were frequency, acceleration, displacement and time of vibration. To study the effect of angularity, four different types of materials ranging from angular to rounded were tested. The effect of uniformity coeffi­cient, percentage of fines and specific gravity was investigated by varying the uniformity coefficient from 2 to …

Radiation Effects On Gaasp Light-Emitting Diodes And Schottky Barrier Field-Effect Transistors., Ranjeet Kumar Pancholy

Electrical and Computer Engineering ETDs

New processes have been developed for the fabrication of gallium­arsenide-phosphide light-emitting diodes and Schottky barrier field-effect transistors. The fabricated devices were characterized electrically and were tested in a radiation environment. Transient effects on p-n junction diodes due to high energy electron beams were examined and the permanent damage caused by high energy neutrons on both diodes and SBFETs were evaluated.

A unique open-tube diffusion process was developed for the fabrica­tion of the light-emitting diodes. A thick layer of GaAsP-oxide was grown over the epitaxial surface for surface passivation and to act as a diffusion mask against zinc diffusion into the …

The Condensation Of Vapor On A Horizontal Rotating Square Tube., Suresh Chandra

Chemical and Biological Engineering ETDs

Heat transfer measurements were made for steam vapor condensing at one atmosphere on the outer surface of a horizontal square tube with a side of one inch, when rotated at between O and 1950 rpm. The Froude number (FR) was based on the side length. Three distinct heat-transfer regimes were observed and are correlated with FR. The first is gravita­tion controlled condensate flow when FR is less than 2.0 and the condensing film heat-transfer coefficient decreases. When 2.0

Historical Sketch Of Tractor Testing, Tractor Museum

Individuals Associated with the Nebraska Tractor Test

No abstract provided.

Historical Sketch Of Tractor Testing, Nebraska Tractor Test Lab

Nebraska Tractor Tests

A historical sketch of Tractor Testing at the University of Nebraska-Lincoln. Lester F. Larsen. Engineer in charge since 1947, visits with George S. Round, Professor of Agricultural Communications at the University about individuals who made contributions to the successful program. He also reports on 1,155 tests conducted up to January I, 1974, and contrasts tractors of 1974 with those of 20, 30 or more years ago . Testing fee schedules are reviewed in a self-supporting project favorably known round the world.

Resonance Fluorescence And Resonance Raman Scattering: Lifetimes In Molecular Iodine, P. F. Williams, D. L. Rousseau, D. H. Dworetsky

P. F. (Paul Frazer) Williams Publications

We report a significantly shortened scattering lifetime in molecular iodine when the frequency of a single-mode 5145-Å incident laser is tuned away from resonance with a discrete transition. This observation of a shortened scattering time is indicative of what has been conventionally called a Raman process. Off-resonance lifetime measurements, as reported here, may provide a means of determining the relative contribution to the absorption line-width of homogeneous and inhomogeneous broadening.

Raised Pavement Markers As A Traffic Control Measure At Lane Drops [No. 418], Jerry G. Pigman, Kenneth R. Agent

Kentucky Transportation Center Research Report

Raised pavement markers are an effective means of reducing erratic movements at lane-drop locations, particularly under nighttime driving conditions. The cost of raised pavement markers and their installation is nominal (approximately $150 per lane-drop location). It is recommended that raised pavement markers be installed at other lane-drop locations. Markers installed at locations described in this study have not been in place for a sufficient time to determine their durability; however, reports from other states indicate their durability is sufficient to render them economical. If raised pavement markers are installed routinely, steps should be taken to insure they are not damaged …

Raised Pavement Markers As A Traffic Control Measure At Lane Drops [No. 384], Jerry G. Pigman, Kenneth R. Agent

Kentucky Transportation Center Research Report

Raised pavement markers are an effective means of reducing erratic movements at lane-drop locations, particularly under nighttime driving conditions. The cost of raised pavement markers and their installation is nominal ($150 per location). It is recommended that raised pavement markers be installed at other lane-drop locations. Markers installed at locations described in this study have not been in place for a sufficient time to determine their durability; however, reports from other states indicate their durability is sufficient to render them economical. If raised pavement markers are installed routinely, steps should be taken to insure they are not damaged by snowplow …

A Microscopy Study Of Lead Sinter, Thomas J. O'Keefe, C. Bennett, E. R. Cole

Materials Science and Engineering Faculty Research & Creative Works

Samples of up-draft sinters produced at three different Missouri lead smelters were studied, to determine the chemical phases present, as a first step toward a more complete understanding of the lead blast furnace operation. The sinters seemed to be basically similar, and all the results reported are from samples from one smelter (Herculaneum smelter, St. Joe Minerals). Analytical tools used included the electron microprobe and scanning electron microscope with a non-dispersive X-ray spectrometer attachment Major phase that were positively identified are metallic lead, lead sulfide and zinc ferrite. The predominant lead phase was tentatively identified as a lead oxide-silicate compound. …

An Experimental Study Of Equilibrium Parametric Pumps, John A. Park

Theses

Parametric pumping is a separation process characterized by periodic changes in axial displacement, coupled with synchronized changes in some variable affecting the position of the interphase equilibrium. Both continuous and semicontinuous pumps were investigated at various operating conditions using a model system of toluene-n-hep-tane on a silica gel adsorbent. It has been shown that when the penetration distance for the cold cycle is less than or equal to that for the hot cycle and the height of the column, the pump has the capacity of complete removal of solute from one product stream. A quantity which is important in determining …

A Study Of Fluid Flow Entering A Sharp-Edged Channel, Rocco Racano

Theses

Experimental investigations were carried out on an newtonian fluid In the two dimensional case through the regions of a sharp-edged entrance and exit. Qualitative and quantitative results were compared to a variation of a two dimensional case of converging flow in a capillary as originally derived by Oka and proposed by Philippoff. In addition velocity profiles were taken in the entrance region. Furthermore, the effect of temperature gradients in the slit region with their resulting optical effects were considered. The methods used to obtain these goals were photoelasticity and streak photography.

Results were four, to be consistent with the theory …

Optimization Of Single- And Double-Flash Cycles And Space Heating Systems In Geothermal Engineering, Talal Hussein Hassoun

Dissertations and Theses

Two different problems of optimization in the utilization of geothermal energy are presented: First, the thermodynamic optimization for a geothermal power plant using a single- or double-flash process is considered; in this analysis, the optimum flash temperature giving the maximum power output is determined. Second, an economic optimization for space heating systems using geothermal energy is developed to obtain operating conditions for which the total (capital and operating) cost is a minimum.

Both graphical and analytical methods are used in the thermodynamic optimization to determine the optimum flash temperature. The graphical method is based on thermodynamic data provided by an …

Front Matter, University Of Missouri--Rolla

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

No abstract provided.

Oxidation Reactions Of Unsaturated Hydrocarbons For Fuel Cells, James W. Johnson, William Joseph James, A. K. Agrawal

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

The anodic oxidation of unsaturated hydrocarbons has been the subject of numerous studies, primarily on Pt and Au electrodes at low temperatures, < 100°C. The complete oxidation to CO₂ is usually the predominant reaction with both H₂O and OH^- having been proposed as the oxygen source. Usually a single study consists of a comprehensive investigation of a single compound on a single electrode or a somewhat limited study of several compounds on a single electrode. A diversity of proposed mechanisms has resulted and is illustrated by the following summary.

History Of So2 Removal System At The Meramec Plant Of Union Electric, Gerald E. Dreifke, John F. Mclaughlin, Jerrel D. Smith

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

In line with the then emerging air pollution control regulations Union Electric installed a limestone injection wet scrubber sulfur dioxide removal system on an intermediate size coal-fired utility boiler at its Meramec Power Plant on an experimental basis in September, 1968. During approximately 3 years of operation many difficulties were encountered with plugging and scaling of various system components by calcium sulphate. As a result of this experience along with related experiences by other utilities employing similar systems, the experiment was terminated in June, 1971.

As a result of the experiences gained, however, second generation experiments in sulfur dioxide removal …

Automation Of The Continuous Coagulation Monitor, Dee Mitchell, James J. Oskowis

Arkansas Water Resources Center Technical Reports

The development of automation in the past 50 years has paralleled the accelerating growth of today’s vast technological society. Automatic control systems are indispensable extensions of man's brain that enable him to monitor and regulate his complex environment. The principles of automatic control have a wide range of applications and interests in virtually every scientific field. The need for automatic control systems in vital applications of environmental engineering is both real and urgent. Extensive pollution has resulted in unavoidable water re-use and in the inevitable establishment of stringent effluent standards. Both water and wastewater treatment processes have necessarily become more …

Future United States Energy Demand Patterns, Leland Blank, Richard Riley

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

The future energy demands of the United States are forecast using a unique approach. The saturation forecasting method reflects the inability of an individual to utilize more than a limited amount of energy. This technique also allows evaluation of various conservation methods and their effects on the future energy needs.

Radiation Testing Under Simulated Loca Conditions, Kenneth G. Mayhan, D. R. Edwards, W. F. Oberbeck, J. F. Montle

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

The purpose of this evaluation is to gather data to determine whether or not radiation during a simulated Loss of Coolant Accident would have any effect upon the coatings being used. Because of the concern in industry regarding the safety of nuclear power generating stations and the strong actions of the various environmentalist clubs and agencies clubs and agencies, the utilities have been required to prove the safety of the power facilities to extraordinary degrees before licensing can be obtained to operate. One of the areas regarding the safety is the necessity of proving that the coatings will remain intact …

Ole Miss Engineer 1974

Ole Miss Engineer

No abstract provided.

Ua66/1/2 Scrapbook, Wku Ogden College Of Science & Engineering

WKU Administration Documents

Scrapbook of clippings, press releases, photographs and other items related to the history of Ogden College of Science & Technology from 1961 to 1974.

Reliability Analysis Of The University Of Missouri--Rolla Reactor, Jimmy Dale Schottel

Masters Theses

"The reliability of Nuclear Installations is becoming an important area of research. In this report an approach to reliability analysis was made. The actual failure data was utilized to predict theoretical failure distributions. These distributions were then used to determine future reliability of components, subsystems and system"--Abstract, p. ii

A Dynamic Simulation Of The Gasoline Distribution System During Periods Of Normal And Restricted Availability, Sheriar R. Bamasi

Retrospective Theses and Dissertations

No abstract provided.

A High Speed Pulse Code Laser Diode Modulator, John Lawrence Mcdonough

Retrospective Theses and Dissertations

This research report reviews the basics of pulse code modulation (PCM) techniques and includes a special encoder design for a system which uses a laser diode output for the transmitted pulse. The text discusses PCM and its features, PCM formats, synchronization, and various accepted PCM codes. The encode circuit design is complete with a description of the circuit, circuit components, and operation. Included are the necessary diagrams, figures, specifications, and parts list. The transmitted output of the design circuit has a repetition rate of one megabit per second.

A Binary Power Generation And Salt Water Distillation Cycle, Edward H. Hardison

Retrospective Theses and Dissertations

This research report discusses a binary power generation and salt water distillation cycle that was the subject of a feasibility study at Florida Technological University. The thermodynamic equations are derived and the results of a parametric study to determine optimum fluid properties is presented. This cycle produces power at efficiencies significantly higher than that of conventional cycles and at the same time produces a significant amount of fresh water. The efficiency is maintained even at the high turbine outlet temperature necessary to produce fresh water. The important quantities in considering they cycle efficiency and the fresh water production are the …

Operation And Calibration Procedures For A Small Four-Component Strain Gage Balance, Gary Allen Rasponi

Retrospective Theses and Dissertations

The Florida Technological University four-component strain-gage balance is an internally mounted, half-inch diameter balance capable of measuring four components of load: front and rear normal force, axial force, and rolling moment. Measurement of these components is accomplished by means of sixteen strain gages that are mounted on the balance and wired into four full bridge circuits. When the balance is subjected to a load, the strain gages, through a small resistance change, indicated the strain a balance element is undergoing. This report presents a description of the balance and its support equipment, and outlines specific calibration procedures necessary to their …

A Design Report On A Servo Controlled Inertial Sensor Test Fixture, James B. Dowdle

Retrospective Theses and Dissertations

This report discusses the design of a servo controlled positioning system for remote control positioning of inertial sensors while under high acceleration test in a centrifuge. A rotating fixture and an electronic control panel was built for this purpose, with two modes of operation. The fixture can be positioned with an accuracy of 0.05 degrees and a resolution of 0.01 degrees, or it can be maintained in a constant velocity mode at rates from 1 to 16 degrees per second. The velocity loop was implemented as a phase locked loop, and the command rate is entered as a frequency - …

Intermodulation Analysis Of Class C Transistorized Amplifiers With Applications To V.H.F. Amplifiers, Robert Hopkins Wollam

Retrospective Theses and Dissertations

The paper discusses the theoretical analysis and the experimental work done to describe the cause of intermodulation distortion in class C transistorized amplifiers. A mathematical basis for the intermodulation was derived using a single frequency input and a second frequency introduced into the output of the amplifier. It was followed by experimental work performed to justify the theory. These experiments used both pulsed and sinusoidal drives as amplifier inputs. Also, a feedback method along with the transistor's operating point was shown to reduce the intermodulation distortion produced by the amplifier. Finally, a short discussion on the results and some of …

A Proximity Vehicle Locator System, Bradley Everett Thompson

Retrospective Theses and Dissertations

The purpose of this paper is to discuss the design, construction and operation of the proximity vehicle locator system prototype developed for the Orlando Police Department. The objective of the project itself was to provide the O.P.D. with a simple but effective system by which constant surveillance of patrol car locations could be maintained, thus improving the department's operational efficiency. Each unit designed specifically for use in this project will be discussed in some detail, while those purchased locally for use in the project will be only briefly described, as pertaining to their functional importance to the system. In addition, …

Design Considerations For Extended Aeration-Denitrification Facilities, Frank Paul Huttner

Retrospective Theses and Dissertations

Design considerations and operating procedures were investigated for nitrogen removal in an extended aeration-denitrification facility. Both past and present removal efficiencies were evaluated for the facility, along with capital and operating cost data. The findings of this research indicate that at very long detention times, significant nitrification and denitrification occurred in the plant without the use of chemicals. Overall nitrogen, BOD5, and suspended solids removals were extremely high. The significance of this research is that future plants may achieve high rates of nitrogen removal through innovative design and operating procedures without the use of costly chemicals. However, capital costs needed …