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Investigation Of Stresses And Deflections In An Inclined Beam., Jayant Chhaganlal Soni

Masters Theses

"In this thesis an investigation has been made of the effect of inclination on strains and deflections in an inclined rectangular steel beam. To compute the strains and deflections Newmark's Numerical Procedure has been used. An experiment has been carried out on a rectangular steel beam for four different load increments and eight different inclinations. To compare the experimental and analytical data, graphs have been drawn for the experimental and analytical quantities of strains and deflections for all the four load increments and eight different angles of inclination. Results of the investigation indicate that the strains and deflections at inclinations …

A Study Of Rotational Critical Speeds For A Multi-Mass, Multi-Span System, Pravinchandra M. Upadhyay

Masters Theses

"It is well known that the unbalanced inertia forces present in rotating shafts set up violent vibrations in a transverse direction at certain speeds known as critical speeds, whirling speeds or whipping speeds. Therefore one who deals with the design of rotating machine parts, such as turbine rotors, multi-cylinder engine crankshafts etc., must consider transverse vibrations of rotating parts.

Practical solutions for finding the critical speeds of simple rotating systems, such as a single disk on a shaft with a single span, were derived by many authors. But as the number of loads and spans increases the problem becomes complex …

Investigation Of Ablation Materials, John Martyn Schattyn

Masters Theses

"The desired result of this paper is to determine what effect the physical and thermal properties of a material have on the ability of that material to act as an ablation heat shield. On the basis of their physical properties, five materials, nickel, beryllium, fused quartz, teflon, and phenolic-nylon, were chosen as examples.

The tools used for this study are heat transfer equations involving a change in material phase. The resulting criteria may be assumed applicable to any material exhibiting one of the four types of ablation processes"--Abstract, page 2.

The Performance Of A Mechanically-Aided Countercurrent Extraction Column., Jerry James Carr

Masters Theses

"In recent years liquid extraction has become a major industrial method for the separation of liquid solutions. Liquid extraction has proven successful in some separations performed only with great difficulty by other, more common mass-transfer operations. Th e industrial utilization of liquid extraction has resulted in considerable interest in the design and performance correlations of high-capacity, high-efficiency extraction equipment.

Continuous countercurrent columns, filled with various packings, baffles, and plates, have been found to be relatively ineffective in liquid extract on service. The density difference of the contacted phases is generally insufficient to, by itself, cause the intimate contact necessary for …

The Construction And Analysis Of An Amplifier For Ultrasonic Research, Jerry John Koelling

Masters Theses

“An amplifier to be used for ultrasonic pulse methods was constructed and tested. The frequency range lies between 100 cycles per second and 2 mega-cycles per second and, if tuned circuit plug-in units are used, may be increased to approximately 4 mega-cycles per second. Special demands upon the amplifier are discussed along with basic acoustic attenuation measurements in solid state physics”--Abstract, page ii.

A Study Of Methods For Determining Confidence Intervals For The Mean Of A Normal Distribution With Unknown Varience By Comparison Of Average Lengths, Karl Richard Kneile

Masters Theses

“The purpose of this thesis is to briefly review various properties which may be desirable for a system of confidence intervals; and to empirically determine whether the system of confidence intervals obtained from the Student’s t distribution will produce shorter average lengths than those obtained by other methods which may be used. It was concluded from the results of an empirical investigation that there was no significant difference between the average lengths of confidence intervals obtained from a family of distributions of which the Student’s t is a member"--Abstract, page ii.

The Effect Of Reradiation On Heat Transmission, Arvindkumar M. Shah

Masters Theses

"In heat transmission by radiation, it is very easy to find the heat transmitted from one surface to another. Much work has been done in this area. The problem becomes complicated when the two surfaces are enclosed or joined by an enclosure. Such problems frequently arise in the design of furnaces. One problem is linked with the economy of fuel, by proper consideration of heat losses through the openings in furnace walls such as doors and burner openings. A second problem is associated with the heating capacity and useful heat transfer through the openings such as heat ports in walls …

Analysis Of A Char-Forming Ablator, William J. Reilly

Masters Theses

"The purpose of this thesis is to conduct an analytical analysis of a char-forming ablation material. This is one phase of ablation heat transfer.

Fourier's general equation for one dimensional heat conduction is transformed to moving coordinates and is then solved using the applicable boundary conditions. Solutions of this equation are valid for initial studies in ablation heat transfer"--Abstract, page ii.

Removal Of Alkyl Benzene Sulfonate By Precipitation With Cationic Surfactants., Phillip E. Custer

Masters Theses

"The extensive use of synthetic detergents, particularly the nonbiodegradable alkyl benzene sulfonate (ABS), has created many difficulties in water and wastewater. Although a number of processes have been proposed for the abatement of the synthetic detergent problem, a completely satisfactory solution has yet to be developed.

Following a preliminary investigation, three cationic agents, Bionol R0-50, G-263 and Primafloc C-5 were selected to be studied in detail in order to determine their ability to remove ABS by precipitation. Studies were conducted in deionized water, river water and domestic sewage systems using an initial ABS concentration of 10 mg/1 and cationic dosages …

Phase Extent Of Gaas, Gasb, And Insb, And Solid Solubility In The System Gaas-Gasb Determined By The Lattice Constant-Density Method., Chang Don Kim

Masters Theses

"The lattice constant of the homogeneous gallium arsenide varies from 5.65298A⁰ to 5.65J26A⁰ at 25° c with a change of composition in the range from 49-935 to 50.015 atomic percent gallium. The lattice constants of g allium and indium antimonide are 6.09592A⁰ and 6.47876A⁰ at 25 ° c, respectively and the extent of the phases of gallium and indium antimonide could not be found in this work.

The thermal expansion coefficient of gallium arsenide is 6.4 x 10^-6/⁰ C in the range between 10 and 65° c regardless of composition, ar.d those of …

Electrolytic Corrosion Of Reinforcing Steel In Concrete., Lawrence D. Green

Masters Theses

"Deterioration of bridge decks has increased the interest in the corrosion of steel in concrete. A comprehensive review of literature on the subject of electrolytic corrosion of steel in concrete is presented in this thesis.

Development of theory from the literature leads to the following statements. There are two causes for electrolytic corrosion of steel in concrete, stray currents from direct current power sources and the formation of macro-cells within the structure. The corrosion caused by the macro-cells appears to be the more important of the two. Anodic areas exhibit corrosion of the steel and cracking of the concrete.

Many …

Determining Stability Of Nonlinear Control Systems Via Lyapunov's Method., John Joseph Komo

Masters Theses

"The problem undertaken in this thesis is to present Lyapunov's method of stability as i t applies to control systems and to use it in the stability analysis of nonlinear control systems. The variable gradient method of generating Lyapunov functions is presented since this seems the best general procedure for obtaining Lyapunov functions. Also, the integration of matrices method is presented as a comparison. ii

Procedures for the use of the variable gradient method and the integration of matrices method are written and several examples are used to illustrate these procedures.

It is concluded that Lyapunov's method is very definitely …

Stability Properties Of Various Predictor Corrector Methods For Solving Ordinary Differential Equations Numerically., Charles Edward. Leslie

Masters Theses

No abstract provided.

Separation Of Radioactive Fission Products By Electrodialysis Using Aminopolycarboxylic Acids., Harry C. Hershey

Masters Theses

"The development of nuclear fission reactors to convert nuclear energy into electrical energy for use in industry, public utilities, military applications, and space exploration has resulted in ever increasing quantities of radioactive waste solutions. Significant reductions in nuclear fuel costs will be obtained when economical processes have been developed for recovery and purification of valuable fission products which are contained in radioactive waste solutions and are in demand for many research applications.

The United States Atomic Energy Commission has supported exhaustive studies to recover fission products by processes involving the more common unit operations such as extraction, distillation, crystallization, and …

Spin Relaxation Of Optically Pumped Rubidium., Kenneth Brian Steinbruegge

Masters Theses

"This Thesis is intended to be a self-contained guide to the theory and experimental procedures of optical pumping in one of its most usual applications. A particular study is made of optical pumping of rubidium vapor and results are given stating the most efficient temperature range in which to produce large populations of optically oriented rubidium atoms. The thermal relaxation time for optically orientated rubidium for a particular system is given and the effect of trapped resonance radiation is considered in the interpretation of the experimentally obtained curves"--Abstract, p. ii

Determination Of The Standard Free Energy Of Formation Of Zr₃S₂, Peter E. Otten

Masters Theses

"The Knudsen effusion method was used to find the equilibrium magnesium pressure for the reaction

3 Zr (s) + 2 MgS (s) = 'Zr₃S₂' (s) + 2 Mg (v)

By using known standard free energy data for the formation of magnesium sulfide and by using the equilibrium magnesium pressure, the standard free energy of formation of Zr₃S₂ was calculated and could be expressed by the equation

Δ F° = -139,800 + 49.13 T cal/mole

in the temperature range 900 to 1100°C.

It was also found that Zr₃S₂ was the zirconium …

The Application Of Quantum-Mechanical Concepts To Biological Systems, Andrew A. Cochran

Masters Theses

"The relation between quantum-mechanical concepts and biological systems is explored by studying the relation of both to the concepts of heat capacity and entropy. It is shown that the most important substances in living matter have extremely low heat capacities and entropies at ordinary temperatures. A critical analysis of the two types of quantum-mechanical interactions between particles and the interactions occurring in low-entropy systems shows that the wave properties of matter are strongly predominant in the chemical elements that constitute 99 percent of living matter. It is concluded that the wave aspects of matter are strongly predominant in biological systems. …

An Investigation Of A Constant Velocity Paper Unwinding Device, Jerry L. Gilmore

Masters Theses

"This thesis outlines one approach in designing a system which involves a second order nonlinear differential equation. A large number of variables are involved in this analysis. Therefore, there are many solutions to the problem but only a few of these will satisfy all required conditions. The analysis will be aided by the use of an analog computer. This computer can be manipulated to obtain optimum values for the different variables.

The computer results are presented in graphical form. Reasonable values for the different variables are obtained from these graphs.

The characteristics of the unwinding device were simulated on the …

Analysis Of Problems In The Performance Of A Natural Gas Storage Reservoir., Gerald Eugene Henderson

Masters Theses

"A digital computer technique is presented for predicting two parameters of underground natural gas storage reservoir performance: (1) the prediction of reservoir pressures and volumes, and (2) the prediction of optimum flow rate and pressure drawdown for a single well in accordance with the theory of water coning.

The outlined procedure for predicting gas storage reservoir pressures and volumes was not effective for the field studies, although certain conclusions have been drawn which should be beneficial in further studies.

The procedure for predicting optimum gas flow rate and pressure drawdown from a well without production of bottom water involved first …

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

Masters Theses

No abstract provided.

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 …

Some Effects Of Impact Of Low Magnitude On The Deformation Of Prestressed Gypsum Cylinders., Arthur Joe Bush

Masters Theses

"A review of the literature pertaining to the subject is presented. Many series or impacts were made on specimens of gypsum which were already under a static load. A special. repetitive impact machine was used to allow a variety or weights to fall from predetermined heights. Tests were conducted inside a roan constructed especially for these tests. Heat gained or lost through the ceiling and walls was kept at a minilI1um by a lining or aluminum-covered, fiber glass insulation. Temperature and humidity conditions were kept nearly constant by a combination air-conditioner and dehumidifier.

Repetitive loading of the prestressed specimen was …

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 …

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. …

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 …

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.

Thermocouple Shape Influence On Response In A Dynamic Compressible Fluid Atmosphere, Philip J. Steger

Masters Theses

"This investigation was performed to determine whether the geometrical shape of a thermocouple used to measure the temperature of a dynamic fluid atmosphere had any affect on its recovery factor and time response.

A converging nozzle was used to establish a dynamic fluid stream in which shaped silver solder junctions of copper-constantan thermocouples were tested. The velocity of the working fluid, air, was about 1000 ft/sec at the test point.

The investigation was successful, within experimental limits, in determining that the recovery factor of a bare thermocouple junction is not influenced by geometrical shape The results agreed substantially with available …

The Design, Construction, And Calibration Of An Apparatus To Determine The Thermal Conductivity Of Solids, Alan Edward Stephenson

Masters Theses

"Many pieces of equipment have been designed to determine the thermal conductivity of solids. They all, however, depend on the application of Fourier's equation of heat conduction in solids to determine the thermal conductivity. The apparatus used in this investigation is a modification of the guarded hot plate method used by the American Society for Testing Materials. Operation of the device is given in a step by step procedure both as a guide for others and also to show how it was operated during calibration of the apparatus. Data obtained in the calibration is given in tabular and graphical form …