Digital Commons Network^™

Design Of Liquid-Liquid Extraction System, Mehdi Rahmani Fard

Masters Theses

"The unit operation of liquid-liquid extraction has developed enormously in the last 20 years and is now recognized as one of the most important techniques for the physical separation and refining of industrial liquids. For years the conventional apparatus used for liquid-liquid extraction has been towers employing countercurrent flow of the liquids and equipped with various means to increase the interfacial area.

The countercurrent column consists of a tower through which flows a continuous phase while countercurrent to this flow is a stream of droplets (the dispersed phase). Provision is made for dispersing one phase with a settling region at …

The Seven Day's Battles, William B. Reid

Masters Theses

No abstract provided.

The Role Of The Elementary School Principal In The Education Of The Gifted Child, Delmar Elder

Masters Theses

No abstract provided by author.

A Comparative Analysis Of Individual Painting Styles Of Selected Artists And Students, Barbara Marx Fife

Masters Theses

No abstract provided.

Methods To Improve The Metallurgy Of Bolivian Tin Ores, Oscar Davila-Michel

Masters Theses

"Tin is a rare element; among the base metals it is one of the rarest. Although it was one of the first metals used by man and has been used since prehistoric time, the ore-dressing and metallurgical methods of tin are inefficient and very wasteful.

The only tin deposits of importance in the Americas are located in Bolivia, South America, and it is in Bolivia that the problems of tin metallurgy are greatest. More than 50% of the tin that is mined in Bolivia is lost in the tailing dumps of the beneficiation plants. In a country where the export …

The Development Of A Device To Replace The Oil Well Dynamometer, Jerry Bernard Overton

Masters Theses

"The mechanical dynamometer is recognized as being a valuable tool in measuring resultant forces acting on the polished rod of an oil well pump. The dynamometer is used extensively to determine loads, torque, and horsepower. "It is also used to determine pump action and trouble-shoot for any seemingly abnormal pumping condition."

Although it is desirous to periodically make dynamometer studies, it is also very time consuming. Because of high labor costs, it has been almost discontinued by many companies. The author became convinced that a less costly method of obtaining the same information could be developed. This method was the …

Iterative Solutions Of Kirkwood's Integral For Liquid Argon, Eugene D. Fabricius

Masters Theses

"A liquid or a dense gas may be regarded either as a very imperfect gas in which multiple collisions are frequent or as a distorted crystal in which the long range order has been lost. The crystal-like approach has not led to formal solutions, but it has led to several approximate treatments which can be used to give numerical results.

The two main types of approaches which have been used are: the cell theories, in which the liquid is regarded as a distorted crystal with one molecule located at or near each lattice point; and the hole theories, in which …

Permeability Study Of Algal Reef Beds Within The Bonneterre Formation, National Mine, St. Francois, Missouri, Bobbie L. Perry

Masters Theses

"The Missouri "Lead Belt" comprises approximately 50 square miles, centering around the town of Flat River, in St. Francois County. Missouri. This district has been producing lead for more than 200 years, the total production being at least 8,000,000 tons of lead, valued at more than $1,000,000,000. For many years, the annual production of the district has been at least one-fourth of the total production in the United States.

An excellent description of the geology of this area was published recently by Ohle and Brown in 1954.

The ore consists principally of galena which is disseminated within the Bonneterre formation …

Frost Formation And Its Influence Upon Heat Transfer, Jack Lewis Loper

Masters Theses

"The cooling of a gas-vapor mixture or a mixture of several vapors, in the general case, results in condensation (phase-change) of one or more of the vapors when their respective dew-points are reached. This results in a mass transfer of the vapor to the cooling surface accompanied by energy transfer as the vapor gives up its latent heat of vaporization to the surface and becomes a liquid. The liquid accumulation adds a resistance to the further transfer of mass and energy unless some means is provided for its removal from the surface, such as gravity action.

In this paper we …

Analysis Of Mining Mechanization In The Fluorspar Mine, Southern Illinois, Marangin Simatupang

Masters Theses

"The purpose of this study is to analyze the underground mechanization in the fluorspar mines in Southern Illinois. The mining mechanization in this district is confronted with manifold problems which are typical of most small or medium size mines.

The ore reserve in each mine is not very large. The method of development had to be planned accordingly such as not to exceed the depreciative capacity of the deposit.

The ore bodies consist of thin bedded layers or small veins. This thickness controls the sizes of the equipment to be used.

The mining operations always lack skilled equipment operators. In …

A Preliminary Investigation Of Strains And Fracturing In Small Hydro-Stone Beams Due To Impact Loading, Niels B. Haubold

Masters Theses

"Every structure has a fundamental frequency which is sometimes referred to as its first natural frequency. If a periodic force acts on the structure whose frequency is equal to that of the natural frequency of the structure, a vibration is set up whose amplitude would approach infinity if it were not for the presence of damping. Since damping is always present, steady state conditions will finally be reached provided that the applied force is not so great that it will cause the structure to fail. The amplitude of the vibration will be a function of the applied force and the …

Effect Of Gamma Radiation On Selected Organic Protective Coatings, James W. Johnson

Masters Theses

"The purpose of this investigation was to prepare pigmented and non-pigmented organic protective coatings and to irradiate them with gamma rays. The coatings received a constant radiation dose of eight million rads. Seven tests were performed on the various coatings. The data from the tests were tabulated so that a direct comparison could be made as to the effect of the radiation on the coatings. The data from the tests also enabled comparisons to be made to determine if the various pigments had imparted any specific properties that would be desirable in coatings being exposed to radiations"--Introduction, page 2.

Effect Of Concrete Shrinkage On Stresses In Reinforcing Steel, C. Raymond Nowacki

Masters Theses

"Shrinkage is one of four phenomena that are considered as causing volume changes in concrete, the other three being creep, temperature change effects, and possible chemical disintegration. While all four are interrelated, the volume change due to loss of moisture is associated with the term shrinkage. Creep is the time-dependent change in volume resulting from external loads. A rise or fall of temperature will produce an expansion or contraction of concrete but also will affect the rate of shrinkage by increasing or decreasing the rate of moisture evaporation from the surface of the concrete.

In the design of concrete structures, …

Detection Of Buried Basement Highs By Airphoto Drainage Pattern Analysis, Reynolds And Wayne Counties, Missouri, Papken Aram Zarzavatjian

Masters Theses

"Purpose and Scope: The purpose of this study is to determine if it is possible to detect buried Precambrian igneous hills in Wayne County and the larger part of Reynolds County in southeast Missouri by the use of aerial photo drainage pattern analysis.

The St. Francis Mountains are located in southeast Missouri. They form a part of the Precambrian basement complex, and have been exposed at the surface by the erosion of the lower Paleozoic sediments which covered them. Some of the hills which make up the St. Francis Mountains are exposed to a great degree, while others still have …

Performance Characteristics Of A Tubular Regenerative Heat Exchanger, Harry J. Sauer Jr.

Masters Theses

"The term regenerator is widely used to define any type of heat exchanger in which the heat is alternately stored and removed...The present investigation is concerned with the calculation of the characteristics of the "single-blow", tubular regenerative heater, its dimensions and performance. In the analysis in this thesis, the heat is considered to be stored in bundles of tubes initially preheated by hot gases flowing through the heater and subsequently cooled by the flow of air. This paper makes no attempt to deal with the effects of radiation from the outer row of tubes to the heater shell"--Introduction, page 1-3.

Transients And Saturation In Synchronous Machines, Sabi J. Asseo

Masters Theses

"The synchronous machine can be regarded as the most important electrical device in today's industry and civilization. Although many improvements in the development of powerful electronic devices have been made, in recent years, the importance of the electrical power engineering field can never be overlooked in any way.

Most of electrical power engineering problems have been studied in the first quarter of the present century, and the results applied to industry for the betterment of electrical power production. As distribution and transmission systems used become extensively large, new problems such as the stability of interconnected power systems, have been introduced. …

Reconstruction Of A Model L Podbielniak Fractional Distillation Apparatus, Raymond Bauer

Masters Theses

"The purpose of this thesis was to reconstruct a Model L Podbielniak Fractional Distillation Apparatus to provide equipment suitable for the study of batch multicomponent distillation. The apparatus will also serve as an analytical instrument. The equipment was instrumented to automatically control the distillation, but an operator is needed to select fractions and insure the proper functioning of the controls.

Samples of hydrocarbon mixtures of known composition were analyzed to prove the successful operation of the reconstructed apparatus"--Introduction, pages 2-3.

Effect Of Hydrated Lime And Portland Cement On The Physical Properties Of Clay Soil For Highway Base Construction, Judson Leong

Masters Theses

"The intent of this research is to determine the change in physical properties of a clay soil caused by the addition of 2, 4, 6, 8 and 10 percent of hydrated lime and portland cement. The effects of these admixtures on the physical properties of the soil were observed by comparing the results of various laboratory tests. The properties chosen for comparison were: (1) liquid limit, plastic limit and plasticity index; (2) shrinkage limit and shrinkage ratio; (3) density and optimum moisture; (4) resistance to penetration; (5) compressive strength and (6) cohesion and angle of internal friction. In order to …

Rheological Measurement Of A Starch Suspension As A Dilatant Fluid, Earl Edward Pape

Masters Theses

"The measurement of the rheological properties, consistency of viscosity and fluid type, necessary for system design calculations, has fallen behind the industrial applications for non-Newtonian fluids. In the petroleum industry in particular, the process of well flow stimulation known as Hydraulic Fracturing utilizes the properties of various non-Newtonian fluids to carry sand at high flow rates to the formation to be fractured. Other non-Newtonian fluids in the petroleum industry are Bentonite clay drilling fluids, whose unique gelling properties are helpful in suspending drill cuttings when the circulation of the fluid has ceased. In Newtonian liquids and gases the consistency is …

Operational Characteristics Of A Small Sewage Oxidation Lagoon, Karlheinz C. Muhlbauer

Masters Theses

"With the rapidly increasing population in the United States the adequate disposal of sewage has become one of the major technical problems which the sanitary engineer has to solve. In most areas it is no longer acceptable practice to discharge domestic sewage or industrial waste products directly into streams or lakes because of the resulting pollution of the water, which may later be used for drinking or recreational purposes. Many larger cities have, therefore, adopted some method of sewage treatment which renders such wastes safe and unobjectionable before they are discharged into a lake or stream. Most of these methods …

Performance Parameters Of Low-Density Ammonium Nitrate Base Explosives; Experimental Results And J. Taylor's Method, Mohammad Azhari Warga-Dalem

Masters Theses

"Ammonium nitrate has been known to the explosive industry for a long time. Compelled by the ever increasing mining costs, in 1954 "Akremite" was introduced to the market. It is a simple carbonaceous ammonium nitrate mixture and is the cheapest explosive available to the open-pit operators.

During the following years considerable amount of research was done, resulting among others with the introduction of ammonium nitrate-hydrocarbon mixtures as an explosive. During the Second World War research was done toward the refinement of the hydrodynamic theory. Several methods of calculating the detonation velocities of the explosives were introduced: Brown (1942), Kistiakowski and …

Surface Temperature Measurement Of Metal Undergoing Induction Heating, Ding-Yee Nee

Masters Theses

"It is the object of this thesis to investigate the possibility of using thermoelectric pyrometry for surface temperature measurement of metal undergoing induction heating. The temperature range under investigation, as stated before, is 400 °F to 1250 °F. This research may actually be treated by two sections.

The first section concerns the methods of using thermocouples for ordinary surface temperature measurements. The second section concerns the effect, if any, on thermocouple e.m.f. readings while it is measuring the surface temperature of a metal undergoing induction heating. The first section of the investigation has been well covered by literature and will …

Paragenesis Of The Minerals In The Einstein Vein Madison County, Missouri, Robert P. Stevens

Masters Theses

"Selection of the Problem: The mineralogical problem of determining the paragenetic sequence of minerals in the Einstein vein, Madison County, Missouri, was suggested by Dr. O. R. Grawe, who previously had supervised a thesis by Joel Pomerene dealing with the geology of the area. Although considerable attention has been given to the mineralization along the vein, a specific study of the paragenetic relations has not been made. Paragenesis has, however, been discussed by others in papers dealing with the geology of the area. Such a study is extremely important in the establishment of a hypothesis of origin, and hence, an …

Design Of Distillation Solvent Recovery System, Donald Empson Puyear

Masters Theses

"With the advent or the atomic bomb during the summer of 1945 the opportunity for engineering colleges to provide an integrated course of study in the field of nuclear engineering was presented. This opportunity has been greatly enhanced by a policy of the Atomic Energy commission, granting funds to selected institutions for equipment necessary for successful instruction in this field. The Missouri School of Mines and Metallurgy, realizing the opportunity presented, has established a course of study in nuclear engineering in which the departments of Ceramic, Chemical, Mechanical and Metallurgical Engineering and Physics are taking an active part.

That portion …

A Statistical Approach To The Zonation Of A Petroleum Reservoir, Leroy Allan Beghtol

Masters Theses

"The problem of dividing a reservoir into distinct permeability zones, in order to predict fluid flow and thereby the production history of the field, has long troubled the petroleum engineer. As a solution to this problem a new statistical method for zoning a reservoir was developed, using a modification of the analysis of variance technique. The application of the statistical zonation procedure to permeability data obtained from eight closely spaced wells substantiated the validity and effectiveness of the new method in determining distinct permeability zones"--Abstract, page iii.

The Development Of, And Requirements In, Undergraduate Professional Industrial-Arts Courses, Daniel L. Householder

Masters Theses

No abstract provided by author.

An Evaluative Study Of The East-Alton Wood River Business Education Curriculum, Richard Leroy Olmstead

Masters Theses

No abstract provided.

The Stability Of Rectangular Plates With Built-In Supports At The Edges, John Bruce Miles

Masters Theses

"The purpose of this investigation is to derive an expression for the critical stress for a thin rectangular plate with compressive edge loading. The load is applied on two opposite edges with the remaining two edges built-in. (See Fig. 1) This is essentially a stability problem.

Rectangular plates with compressive edge loading and various edge restraints appear in a number of engineering structures. Bulkheads of ships could be so classified, as could certain components of fabricated beams and columns. The new supersonic B-58 bomber developed by Convair has a honeycomb wing structure dictated by heat conduction requirements. This, too, involves …

The Correlation Of Kelly Ball Penetration Readings With Standard Slump Cone Readings For Concrete Made From Missouri Aggregates, James Claude Rives

Masters Theses

"The ASTM standard slump test as set forth in ASTM Designation: C143-52, has been used for many years in concrete construction tor measuring the consistency of plastic concrete. Slump tests taken in the laboratory are considered reasonably accurate; however, there are numerous disadvantages in performing these tests in the field; the most serious being the time required to make a test on pavement work. The standard slump cone method is also subject to personal differences in sampling, rigidity and smoothness of base, dampening the apparatus, filling the cone, rodding, raising the cone, freedom from jarring and selection of point to …

A Probe For Measuring Ultrasonic Pressures, Robert F. Rohrer

Masters Theses

"In the study of acoustics, the term ultrasonics is defined as those wave motions that have frequencies greater than about 20,000 cycles per second. The characteristics of a sound wave at any point in a medium can be regarded as completely defined when the amplitude, frequency, and phase of its Fourier components are known.

Sound measurements at their best are difficult. In the last few years sensitive linear microphones and electronic amplifiers have become available. Still, there are two difficulties of prime importance with their use in a sound field. First, there is the precise, absolute calibration of the equipment …