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The Construction And Evaluation Of A Small Scale Laboratory Fermentor For Batch And Continuous Studies., Robert Murray Logan

Masters Theses

"The purpose or this investigation was to design and construct a suitable apparatus for the aerobic culture or microorganisms to be used for preliminary batch studies and eventually, continuous fermentations.

The general design of the apparatus was patterned after small scale equipment described in the literature. Construction or the apparatus was carried out in the shop of the Department of Chemical Engineering and Chemistry. All of the necessary machining was done by the author.

The aeration-agitation system was evaluated by the use or the sulfite oxidation rate determination. The oxygen transfer rate provided by the apparatus was round to be …

Mathematical Techniques In The Solution Of Boundary Value Problems., Vincent Paul Pusateri

Masters Theses

"This study was undertaken to present a summary of mathematical techniques as applied to the solution of boundary value problems in partial differential equations.

The techniques that were presented can be considered to be some of the most popular in applied science.

The salient features of the study are that different techniques can present different analytical expressions for a solution to the same boundary value problem, and from the viewpoint of computation and accuracy one solution may prove more desirable than the other.

The study also indicates that in boundary conditions where finite discontinuities exists, a slight perturbation to remove …

Compensator Design For Unity Feedback Systems On The Digital Computer., Ping Liang

Masters Theses

"In control systems engineering it is frequently necessary to compensate a fixed plant whose transfer function cannot be changed. Usually the characteristics of the resulting system are established in terms of steady state and transient performance specifications. Generally it is necessary to insert a compensator which permits the system to satisfy the specifications as well as to provide an absolutely stable system.

In this thesis a method is developed to determine the transfer function of the compensator. Each system performance specification can be expressed in a differentiable inequality form composed of the system closed-loop gain, zeros, and poles. First, the …

Small Signal Gain Analysis For A Seven Cavity Klystron Amplifier., William E. Hord

Masters Theses

"The problem was to find a suitable method of using the digital computer to calculate the small signal gain characteristics of a seven cavity klystron amplifier. Background material relevant to the problem was reviewed. The differential equations for small signal conditions in a gridless gap klystron were developed. These equations were then solved and put in a matrix form suitable for digital computer analysis. Suggestions for additional development were proposed"--Abstract p. ii

Convective Heat Transfer In Small Enclosed Air Spaces., Joseph Charles Kroutil

Masters Theses

No abstract provided.

Pattern Calculations On A Loaded Spiral Antenna., Jose Briceno

Masters Theses

"The purpose of this thesis is to calculate and p lot the radiation patterns o f a ferrotron-loaded spiral antenna made of semicircles. In particular, this work is confined to a balanced spiral free to radiate in all directions.

The current distribution used in the evaluation of the vector potential is taken from a synthesized current obtained from experimental information on a ferrotron-loaded spiral antenna at a frequency of operation of 200 MC.

The calculated patterns of the spiral antenna are in general single lobed in a direction perpendicular to the plane of the antenna. The beamwidth varies from 62° …

Missouri School Of Mines Antenna Range Design., Russell Melvin Ousley

Masters Theses

"The problem was to design, construct and evaluate an antenna range which could be used in future research and instructional programs. The basic theory of range design and practical considerations were studied and a range was then designed and built from equipment which was either immediately applicable, applicable after modification or constructed to fit the needs of the range. Tests were made to determine the performance characteristics of the system with respect to the more important design parameters. Suggestions were given for future improvement of operation and expansion of the range capabilities"--Abstract p. ii

The Justification For And Design Of A Lunar Radio Observatory., Thomas Van Doren

Masters Theses

"The purpose of a radio telescope is to record information concerning the strength, spectrum, polarization, and direction of arrival of extraterrestrial electromagnetic radiation at radio frequencies. Earthly based radio observatories are hampered in their attempt to achieve this purpose by atmospheric absorption and reflection of the radiation. A lunar based system would not have this problem because the Moon possesses practically no atmosphere. However, other environmental conditions, such as micrometeorites, high frequency radiation, and extreme temperature variations, must be overcome. This thesis justifies the need for a lunar radio observatory and also describes a particular radio telescope system which should …

A Study Of Chemical Stabilization Of The Swell Properties Of Putman Soil, Dale E. Dobson

Masters Theses

"The theory of chemical stabilization of a swelling clay was reviewed. The effect of several chemicals on the engineering properties of Putnam soil was investigated using the Atterberg tests. Strength of concentration of chemical additives versus preferred structural orientation of treated Putnam was investigated using sedimentation procedures similar to those used in the hydrometer analysis of fine grained soil sizes. Swell tests were conducted under a static load of 1.25 psi on untreated Putnam, Putnam in combination with sodium carbonate, and Putnam treated with calcium hydroxide. These tests were conducted at varying initial moisture contents and dry densities.

It was …

Effects Of Gamma Radiation On Ion Exchange Membranes., John R. C. Roop

Masters Theses

No abstract provided.

Composite Beams In Building Constructions., Mahendrasinhji M. Jhala

Masters Theses

"The use of composite beams is very common in bridge and. in building construction due to the fact that a savings in material is effected.

The study herein shows a simplified procedure for design of composite beams. A number of design charts for rapid selection of a wide-flange section and the necessary cover plates are presented herein. These charts are based on economic sections of steel beams when used in a simple span, if one knows the approximate depth of the beam, slab thickness, allowable stresses in the steel and concrete and live load moment, it is very easy to …

Application Of Photoelasticity To The Stability Of Slopes In Open-Pit Mines., Aly Hemedah Gomah

Masters Theses

"A study of the stability of wall slopes in open pit mines was performed by preparing photoelastic epoxy-resin models representing open pit mines with various slope angles. The models were loaded centrifugally, using the 'locked-in' stress technique. Due to the relatively large sizes of the models, stress distributions could not be recorded with the photographic equipment available. Therefore, fringes and isoclinics were plotted directly on the models themselves. The fringes were used to calculate the shear stress concentrations at arbitrary points in the model from known stresses at control points in the models. The type of slope failure that was …

The Electrochemical Degradation Of Alkyl Benzene Sulfonate., Melvin David Rickard

Masters Theses

"The ever increasing use of nonbiodegradable synthetic detergents, mainly the alkyl benzene sulfonates, has created difficulties in water and wastewater treatment, and in stream pollution. Although considerable attention has been given to this problem, no solution has been developed which can be effectively employed in the abatement of detergent pollution.

The purpose of this investigation was to determine the feasibility of the use of direct current electrochemical degradation in the removal of alkyl benzene sulfonates (ABS) from water. The rate and degree of completion of the electrochemical reactions were determined, and the nature of the end products formed was investigated. …

An Electrolytic Polishing And Recrystallization Study Of Zinc And Zinc Alloys., Roy Ashley Smith

Masters Theses

"A Unitron hot stage and polarized light were used to enable direct observation of recrystallization in high purity (99.99 per cent) zinc and high zinc content alloys. Electrolytic polishing was investigated in an attempt to prepare unetched surfaces which would show good structural contrast under polarized light and thus permit structural changes occurring during recrystallization to be observed.

Kinetic data obtained from a sequence of photographs during each recrystallization trial showed typical sigmoidal isothermal reaction curves characteristic of a nucleation and growth process. It was determined that rates of nucleation and grain growth are a maximum over the same time …

Permeability Of Organic Protective Coatings And Relation To Film Thickness, Bipin N. Doshi

Masters Theses

“Special types of coating systems are used to protect industrial products and structures against corrosion. Many millions of dollars are spent each year for these coatings. The ability of protective coatings to reduce or inhibit corrosion depends on a variety of factors such as dry film thickness, resistance to permeation of ions and vapors, temperature, pressure, structure of binder, nature of pigment, electrolytic resistance, and many others.

The initial work done by Larry Inglis on the permeability of coatings and it's relation to thickness of coating films showed that the permeability, as determined by under film corrosion, was independent of …

A Study Of The Relative Electric Resistance Of Commercial Steels And Pure Iron, William Eugene Wistehuff

Masters Theses

"The change in relative electric resistance of five commercial steels, Armco Ingot Iron and Pure Iron were studied over the temperature range of 800°C to 1100°C in an attempt to correlate the phenomena of hot or red shortness with a change in the Electric resistance .

The results from the above resistance measurements were compared with mechanical tests of the same steels to show that at the point at which the iron sulfide liquid forms there is a definite change in the slope of the electric resistance vs temperature curve.

Also studied was a discontinuity in the electric resistance vs …

Parameters In Ablation Heat Sheilds, Franklin Chang Liang Lin

Masters Theses

"The desired result of this paper is a method of determining temperature distribution and burn off rate in a semi-infinite rod or shield subjected to a large heat flux. The possible methods of determination were investigated, and it was felt that an analytical approach turned out to be the most feasible.

The analytical analysis employed involves the use of the Fourier's general equation for one dimensional heat flow. Transformations from stationary to moving coordinates reduces the problem from unsteady state to steady state boundary conditions. The resulting equations can be applicable to the extent for the heat flow problems involving …

The Sacajawea Formation And The Darwin Sandstone In The Southeast Wind River Mountains, Wyoming, Denny N. Bearce

Masters Theses

"The area under study is located along the southeast flank of the Wind River Range in Fremont County, Wyoming, Beds overlying the Madison Group are measured and described in six locations within this area. These locations are: Worth Fork Popo Agie River, Sink’s Canyon, Crooked Creek, Canyon Creek, Little Popo Agie River, and Cherry Creek.

Laboratory studies are used as an aid in correlating the sandstone and dolomite sequences described In the six sections. These studies include sieve and heavy mineral analyses and thin section examination.

Sorting factors, obtained from the sieve analyses, and heavy mineral suites indicate that the …

Determining Design Freedom Of Linear Feedback Control Systems, Harley D. Brixey

Masters Theses

“The problem confronted in this thesis is to develop a method or procedure to be used in determining the amount of design freedom that is available in any given linear feedback control system by working with the signal flow-graph representation of the system.

Literature was reviewed that deals with basic signal flow-graph theory and degrees of design freedom. Signal- flow-graph theory that forms a foundation for the development is presented.

The development consists of starting with an essential signal-flow graph of order one. The sensitivity and transmittance functions are written for this essential graph in terms of graph symbols; then …

Impulsive Loading Of Metals And Alloys, William Barnes Mclane

Masters Theses

“This thesis deals with the construction of an explosive deformation apparatus. Using the apparatus an investigation was made of the deformation changes in the structure of a 10% uranium-aluminum alloy and a hot rolled high carbon Manganese steel. Also a study of deformation through different thickness of Stainless Steel, Type-304, plates was carried out.

All of the deformations were obtained using a constant explosive charge consisting of a #6 commercial blasting cap coupled with a commercial chemical booster"--Abstract, page ii.

Interaction Curve For A Beam Column., Mahendra Khushalchand Sanghavi

Masters Theses

"The theoretical interaction curve for a circular section is established. Experimentally the interaction curve f or a beam-column with a varying circular cross section, is established. The effect of stress history is discussed, and the comparisons of different interaction curves are made"--Abstract p.i

Experimental Stress Analysis Of Bolts In A Flange Coupling, Bansidhar Shah

Masters Theses

"This thesis deals with the strength of a bolted joint which is subjected to tensile and bending loads. The purpose of this investigation was to derive expressions for the stresses developed in the bolts and the load producing separation of the joint.

A laboratory study of a flange coupling was made and the behaviour of flange bolts under different clamping forces was studied in tension and bending tests. The strain in the bolt was measured by mounting the strain gages on the shank of the bolt. From this, a graph of applied load versus strain in the bolt was plotted. …

The Effects Of Selected Factors On Design Sensitivity, Leslie Horshal Cochran

Masters Theses

Chapter I.

Background of the Study

Introduction

Design is a comprehensive term involving a multitude of areas and activities. Its meaning has varied according to individual tastes and philosophies; however, regardless of the terminology involved, it has always been associated with the planning for an object or a product.

Throughout history the emphasis on design has varied, but its basic framework has been present in all cultures. From the crude but honest designs of primitive man, through the Golden Age of Greece, by means of the Roman Empire, via the Renaissance, and throughout the Eighteenth and Nineteenth Centuries, design served …

Comparison Of Alcohol Offenses Of College Students With Those Of Persons In A Similar Age Group Who Have Not Had College Experience, Cornelis Laban

Masters Theses

Introduction

The purpose of the study was to·make· a comparison of the drunk driving behavior of college students with that· of those persons in a similar age group who have not had college experience. There is very little published information about the statutes governing "driving under the influence of liquor" (D.U.I.L.). The educable nature of persons involved in such offenses 8 and the probable anti-social and sociopathic behavior in individuals leading up to the offenses, also need thorough investigation. Very pertinent also is the question whether or not there is a biological basis for this particular behavior; an understanding of …

Prediction Of Creativity By Two Parts Of The Ac Test Of Creative Ability, David Austin Morris

Masters Theses

No abstract provided.

A Study Of Characteristics And Achievement Of Transfer Students Admitted To Eastern Illinois University, David A. Diederich

Masters Theses

No abstract provided.

Study Of The Design Of Reinforcement For Prestressed Concrete And Blocks, Charles Robert Hoffman

Masters Theses

"This thesis is an analysis of the transverse tensile stress condition in an end block of a prestressed concrete beam. A stress analysis was made by photoelasticity and compared to the mathematical solutions and experimental solutions performed by others on concrete models. The photoelastic model was made from a piece of Columbia Resin, 39.

Whatever method is chosen to determine the stress condition, there is no exact code that can be established to fit the various type problems which arise"--Abstract, page 1.

A Comparison Of Backwater Profile Computation, Alwin Chang Hsin Young

Masters Theses

"Bakhmeteff's, Von Seggern's, and the Standard Step methods were chosen for a comparative study of backwater profile determinations made with the assistance of a digital computer. This study concentrated on the M-l type of curves for different kind of prismatic channels; i.e. rectangular, trapezoidal, and parabolic channels. From the results obtained by each method for different channels, the consistency between the several methods and their applicability to all shapes of channel had been studied. Also the effect of the number of reaches used in flow profile determinations, the effect of the use of an average value of (1-ß), hydraulic exponents …

Detection Of Rust Formed Under Paint Films, James Larry Inglis

Masters Theses

"Corrosion is an evil that has plagued man since before the iron age. Three ways of controlling corrosion are: 1. alloy the metal to make it chemically inert to corrosion, .2. change the surroundings to a noncorrosive atmosphere, and 3. isolate the metal from the corrosive atmosphere, as for instance by the application of a number of coats of paint that has been found to be the most economical method.

At present, there is no reliable method of testing the effectiveness of a paint film that does not require the corrosion products to destroy the paint film and show themselves …

Predicted Transient Response Of Complex Poles By Means Of A Residue Ratio, Rameshchandra Shankerbhai Patel

Masters Theses

"Transient response plays an important role in servomechanism, electronic and electrical circuits. A time response of a linear system is the intuitive and immediately comprehensible description of the system performance. The utility of the system performance in television and high speed computer circuits can be determined by its transient characteristics. By locating certain points on the transient response curve the designer is enabled to predict the shape of the response with some precision. The choice of the overall transfer function (or location of the system singularities on the s-plane plot) is decided by speed, accuracy and stability of the response …