Engineering Commons^™

Characteristics Of A Stirred Bed Reactor Used For Gas-Solid Reactions, Christine Joy Beyke

Masters Theses

“A fluidized bed gas-solid reactor was designed and tested in which most of the fluidization energy is provided by a helical stirrer, with gas being used primarily as a reactant. The bulk gas in which the particles are suspended is practically constant in composition except for the area immediately adjacent to the gas inlet. The reactor is capable of withstanding temperatures up to at least 800°C and can be used with a wide range of flow rates. It is intended primarily as a laboratory tool, with the potential to be scaled up to multikilogram size.

The reactoor is a useful …

Influence Of Oxygen Activity On The Lattice Parameters And Thermal Expansion Of Mg And Sr-Doped Lacro₃, Sutham Srilomsak

Masters Theses

"Lanthanum Chromite, when used as the fuel cell interconnector material is exposed to extremely different oxygen activities on its two surfaces. In addition, it must also form coherent boundaries with the fuel electrode (anode) and air electrode (cathode) layers. In order to accomplish these functions the acceptor doped LaCrO₃ must not only be chemically stable over large oxygen activity ranges, but also have good thermal expansion coefficient of match with both the anode and cathode. Therefore, the objective of this study is to investigate these requirements for Mg and Sr doped LaCrO₃. The study was divided into …

Bearing Capacity Of Shallow Foundations, Yassin Taissir Al-Kour

Masters Theses

"Several bearing capacity theories have been reviewed in this analysis. However, only Meyerhof's theory is considered in great detail. Bearing capacity factors N_c, N_q, and N_γ have been computed based on Meyerhof's plasticity theory and the minimum passive earth pressures have been found by iterative calculations at all grid locations.

A computer program was developed to run Meyerhof's analysis on the IBM-Personal Computer. His previous charts were not totally satisfactory, because certain geometry was ignored. The computer program considers surface and shallow foundations with various values of degree of mobilization and ratios of depth-to-width of …

Measurement Of The Dusty Gas Model Parameters For Activated Carbon, Philip James Gloor

Masters Theses

"Included in the dusty gas equation are three constants, C₀, C₁ and C₂, which depend only upon the porous medium. Values for C₀ and C₁ can be obtained for a particular porous material by performing pure gas flow experiments and a value for C₂ can be obtained for the same material by performing Wicke-Kallenbach experiments. In this work, values for the dusty gas model parameters, for activated carbon, were obtained by performing the necessary experiments. The design and operation of the experimental equipment is presented along with the results obtained. The activated …

Expert System Technology Applied To The Sensor Allocation Problem For Multisensor Integration, Edwin Rowe Carney

Masters Theses

"The use of multiple sensors for target acquisition provides both redundant and complementary coverage of the target observation space. To effectively utilize the sensor suite and to reduce the number of operator tasks, a high level of automation is required. An expert system is used to control the sensor suite. The expert system acts as an interface between the operator and the multisensory system. The sensors and their modes of operation are selected by the expert system. The mode selections are dependent upon the operator objective, the environment, and the physical and logical constraints of the system. The goal is …

Water Desalination Using Nocturnal Radiation Cooling, Ali Mufarreh Saleh Al-Amri

Masters Theses

"In this investigation nocturnal radiation condensation cooling is considered to determine the possibility of using this method as a desalination process in remote areas, villages and resorts, etc. An experimental study was made and programs were developed to calculate water collection under ideal conditions. Both experimental and theoretical work indicated that this process is useful for small scale water production where there is no available energy sources. It can be used also in conjunction with solar desalination processes. Cost analysis and a preliminary design are included"--Abstract, page ii.

Determining The Modified Derivative In Pressure Analysis, Scott Michael Frailey

Masters Theses

"The derivative type of curve technique of Bourdet for analyzing pressure tests requires calculating the derivative of the storage plot. Four numerical methods are used to evaluate the derivative: a five-point formula, Richardson's Extrapolation, a parabolic fit, and a central difference procedure. The parabolic fit and the central difference technique are good methods of determining the derivative. The effects of logarithmic s pacing of the data, using a central difference method, are studied. An investigation of the second derivative and the integral is conducted"-- Abstract, p. ii

Automation Of A High-Potential Test Instrument, Jeffery D. Breshears

Masters Theses

"Microcomputer controlled automation of a high-potential test set is presented. The design and development of a controller, the support circuits used to interface between the existing electronics and the controller, the IEEE-488 Bus Interface, and a new control panel design with options for manual, automatic, or computer-controlled operation of the instrument are given. Software subroutine listings which exemplify the computer-automation feature of the instrument are also presented. Recommendations for modification and improvement of the given design conclude the paper"--Abstract, page ii.

An Investigation Of The Low Voltage Failure Mechanism In Multilayer Ceramic Capacitors, Christopher John Brannon

Masters Theses

"Enhanced leakage current was induced into multilayer ceramic capacitors by the introduction of micro-cracks. These cracks extended from the surface through the electrode layers and were formed by means of thermal shock. The capacitors were then exposed to a low voltage bias and a humid atmosphere. Results indicated that a simple electrolytic solution mechanism may be responsible for the increased conduction, and that the proposed dendritic growth mechanisms may be more complex than necessary"--Abstract, p. ii

Selection Of Remedial Engineering Techniques For Dioxin-Contaminated Soil Sites ; Based On Site Geological Characteristics, Jeffrey John Lux

Masters Theses

"Specific geologic, hydrologic, and topographic characteristics influence the selection of technologies employed in the remediation of sites affected by dioxin-contaminated soil. These characteristics are significant in the selection of equipment and methods for excavation and materials processing.

The only currently sociologically acceptable method of treatment of dioxin-contaminated soils is incineration. As more is learned concerning the nature of dioxin sorption to soil particles and the mobility of dioxin in the environment, long-term storage in underground mines, and land burial appear to offer strong potential alternatives. Strong public sentiment against non-destructive remedial options would have to be overcome. There are also …

The Use Of Fuzzy Sets Mathematics To Assist Pavement Evaluation And Management: Executive Summary, Manol Andonyadis, A. G. Altschaeffl, Jean-Lou Chameau

JTRP Technical Reports

No abstract provided.

Microcomputer Implementation Of Santa: A Personnel Management Model : Implementation Report, J. R. Wright

JTRP Technical Reports

No abstract provided.

Microcomputer Implementation Of Santa: A Personnel Management Model, J. R. Wright, Steven Christian Egly

JTRP Technical Reports

No abstract provided.

Application Of A Rapid Test Method For Asphalt Content, Mary Jo Hamman, Douglas Windslow

JTRP Technical Reports

No abstract provided.

Pore Structure Of Concrete, Ding Liu, Douglas Windslow

JTRP Technical Reports

No abstract provided.

Assessment Of Routine Maintenance Needs And Optimal Use Of Maintenance Funds: An Estimation Of Service Life And Cost Of Routine Maintenance Activities : Interim Report - Executive Summary, Kieran John Feighan, Kumares C. Sinha, Thomas D. White

JTRP Technical Reports

No abstract provided.

Design Of Reinforced Embankments : Executive Summary, Dana Norman Humphrey

JTRP Technical Reports

No abstract provided.

Development Of A Procedure To Assess Highway Routine Maintenance Needs : Interim Report, Ferdnando Mario Montenegro, Kumares C. Sinha

JTRP Technical Reports

No abstract provided.

A General Method For Three Dimensional Slope Stability Analysis : Informational Report, Jose E. Thomaz

JTRP Technical Reports

No abstract provided.

Runoff And Erosion As Affected By Corn Residue: Prt Ii: Rill And Interill Components, John E. Gilley, S. C. Finkner, R. G. Spomer, L. N. Mielke

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Hydraulic and soil loss variables were measured under simulated rainfall conditions at selected downslope distances on plots with corn residue rates ranging from 0.0 to 6.7 t/ha. Application of corn residue produced substantial reductions in runoff rate, runoff velocity, sediment concentration and soil loss rate along the entire slope length. On those plots subject to rilling, runoff rate, sediment concentration and soil loss rate usually increased with downslope distance.

Rill and interrill sediment concentration and soil loss rate were also measured at selected slope lengths. lnterrill sediment concentration changed little with downslope distance while greater interrill soil loss rates were …

A Study On The Behaviour Of Sandwich Beams Under Three Point Bending, Sherif Sami

Archived Theses and Dissertations

No abstract provided.

Kinetics Of The Oxidation Of Hydrazine By Iodine In Acidic Perchlorate Medium, Mohamed Ashraf Anis Onsy

Archived Theses and Dissertations

No abstract provided.

Swelling Pressure Studies Of Shales, S. L. Huang, N. B. Aughenbaugh, John D. Rockaway

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

A swelling model was developed to predict the swelling pressure which occurs within shale or shale material when it is immersed in water. This model is also capable of estimating the magnitude of shale swelling when subject to humidity changes. The model was developed on a basis of the moisture susceptibility of the shale and the initial humidity of the ventilated mine air. The Moisture Activity Index (IRH) was selected to describe the susceptibility of shale to moisture because of its close association with the other physical properties, its strong correlation with the swelling of the shale, and because it …

Reply, Paul W. Angel, Chandra S. Ray, Delbert E. Day

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.

1986 Directory Of Indiana State, County, City And Town Officials Responsible For Road And Street Work, Herpicc

Indiana Local Technical Assistance Program (LTAP) Directory

Contact information for agency officials and employees responsible for Indiana’s local road infrastructure.

Guide Manual—Records And Reports For Indiana County Highway Departments, Jean E. Hittle

Indiana Local Technical Assistance Program (LTAP) Publications

This Guide Manual on Records and Reports for Indiana County Highway Departments has been prepared, in collaboration with the State Board of Accounts, to assist County Road Officials in complying with the statutory requirements. (IC 8-17-4.1)

The procedures on the keeping of the forms, the sample entries that demonstrate the use of the forms, and the summary charts, showing the relationship of the several forms to each other, have been reviewed by the State Board of Accounts and are believed to be correct and authoritative. It must be recognized, however, that such a Guide Manual as presented here cannot cover …

Effect Of Deferoxamine On Late Deaths Following Cpr In Rats, Charles F. Babbs, Sushil D. Kompala, Karl E. Blaho

Weldon School of Biomedical Engineering Faculty Publications

The iron chelating agent deferoxamine was studied in an animal model as post-resuscitation therapy to prevent late deaths and brain damage following total circulatory arrest and resuscitation. Cardio-respiratory arrest was induced by injection of cold, 1% KC1 into the left ventricles of ketamine anesthetized rats pretreated with succinylcholine chloride, and by discontinuation of positive pressure ventilation. CPR was begun after six minutes, and animals with return of spontaneous circulation were entered into the study. Within five minutes after return of spontaneous circulation, treated animals received deferoxamine (50 mg/kg, IV). At ten days, 16 of 25 (64%) of treated animals had …

Relationship Between Pulse-Wave Velocity And Arterial Elasticity, F J. Callaghan, L A. Geddes, Charles F. Babbs, J D. Bourland

Weldon School of Biomedical Engineering Faculty Publications

Pulse wave velocity (PWV) was measured in situ in 11 isolated canine common carotid arteries. Seven arteries exhibited a linear PWV vs. pressure function at pressures ranging from 0 to 200 mmHg. Four arteries yielded a linear relationship between PWV and pressure between 1 and 100 mmHg; for these vessels the relationship was nonlinear at higher pressures. Seven arteries (five from the group which was linear up to 200 mmHg and two from the group which was linear up to 100 mmHg) were excised and pressure/volume measurements were made in vivo. Using pressure/volume data, the Moens-Korteweg equation was evaluated as …

Potassium Efflux From Myocardial Cells Induced By Defibrillator Shock, M J. Niebauer, L A. Geddes, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

A transient, dose-dependent cardiac depression was produced by defibrillator shocks in an isolated, working canine heart preparation perfused with oxygenated arterial blood from a support dog. Accompanying this depression was an efflux of potassium (K+ ), forced out of the myocardial cells by the passage of defibrillating current. The transient increase in extracellular K + concentration was recorded graphically in the venous outflow. It was found that 5-msec rectangular wave shocks, from three to ten times defibrillatory current threshold, released doserelated pulses of K+ . We conclude that because extracellular K + is a myocardial depressant, at least part of …

The Effect Of Carbon Dioxide, Lidoflazine, And Deferoxamine Upon Long Term Survival Following Cardiorespiratory Arrest In Rats, Stephen F. Badylak, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

This study examined the effect of carbon dioxide, lidoflazine, and deferoxamine therapy upon the 10-day survival incidence and subsequent neurologic function of rats subjected to 7 min of cardiorespiratory arrest with resuscitation. Cardiac arrest (asystole) was induced at time zero by injection of cold, 1% KCl into the left ventricle of ketamine-anesthetized rats pretreated with succinylcholine. Positive pressure ventilation was discontinued at time zero. Cardiopulmonary resuscitation (CPR) was begun at 7 min, and animals with return of spontaneous circulation were entered into the study. Twenty treated rats were ventilated for 1 h with 7% carbon dioxide-93% oxygen and given lidoflazine …