Engineering Commons^™

Constitution And Properties Of Manganese-Copper Alloys, James Harrison Jacobs

Masters Theses

"This work was undertaken because of the recently revived interest in the use of manganese as an alloying element. This revival of interest has been mainly due to the development of the process for electro-deposition of manganese by the U. S. Bureau of Mines. Prior to the work of the bureau of Mines there was no commercial source of high purity manganese. Manganese made by the electrolytic process contains less than .03% impurities, while manganese made by other methods contains as high as 3% impurities. The use of high purity manganese as a base for alloys should open up an …

Absorption Of Carbon Dioxide In A Bubble Plate Tower, William Arthur Enderson

Masters Theses

"Gas absorption, one of the chief operations of chemical engineering, has occupied investigators for a long time. Results of many experiments on the general subject of gas absorption has been published. However, relatively few data have appeared in the literature on the use of bubble cap towers for gas absorption although they constitute one of the three major classifications of absorption equipment. Bubble cap towers are used extensively in the petroleum industry. More performance data would increase the versatility of existing equipment"--Introduction, page 1.

Coordination Of Transportation Systems Of The United States, Herman Blickensderfer

Masters Theses

"To any thinking man it must be apparent that the railroads are of vital necessity to the country at large as they can more cheaply move a host of the heavy commodities than can the trucks, and of course the waterways do not and cannot reach every part of the vast territory that must be served. On the other hand it is equally apparent that many of the other types of traffic can be handled more readily and cheaply by truck than by rail. This would lead one to conclude that some way should be found to give to each …

Design Study Of A Three Span Continuous Tied-Arch Bridge, George Perry Steen

Masters Theses

"In this study of the continuous tied-arch bridge, having one main span and two equal side-spans, the following items are endeavored: (1) To set up the total internal work equations and to find the values of the unknown forces or redundants. (2) To compute to maximum moments for design and to complete the design of the super-structure for one bridge. Details, such as the gusset plates, rivets, connection angles, etc., are not designed; the effect of such being allowed in the design for dead load as a certain per cent for details. (3) To set up hypothetical conditions for other …

A Comparison Of Methods For The Determination Of Iron In Clays And Related Ceramic Materials, Hoyt Gillum Thompson

Masters Theses

"Iron is always present in clay and ceramic products. This element has a definite effect upon the properties of substances containing it, hence it is important for the ceramist to know the exact amount of this element present in a ceramic material. Many methods have been devised for the precise determination of iron, both in large and small amounts. Of the many methods used, the American Society for Testing Materials has listed only two for the examination of clays, refractories, and similar material...However the amounts of iron for which these methods are most suitable are not given. Nor does the …

The Sorption Of Metallic Ions By Wood Pulp During Purification, Harold Edgar Boyd

Masters Theses

"The cost of producing cellulose acetate, and the difficulties attending its dissolving, plasticizing, and application to specific uses are problems which must be investigated before the ultimate commercial development of the material can be realized. The price of the cellulose used as raw material for acetylation is one of the primary factors influencing the cost of the finished product. At present, cotton linters constitutes the chief practical souce [sic] of acetate, being almost pure alpha-cellulose, and cheaper than staple cotton, our other source of high alpha-cellulose, Wood pulp is the only other material offering promise as a substitute for cotton, …

Laboratory Concentration Of A Lead-Zinc-Fluorspar Ore From Southern Illinois, Shiou-Chuan Sun

Masters Theses

"The purpose of this investigation was to ascertain the feasibility of preparing marketable products from a rather complex sulphide-fluorspar ore"--Object, page 2. "The ore was examined exhaustively by chemical, microscopic, and mineralogical methods of analysis. After a thorough knowledge of the physical characteristics of the ore had been obtained, flotation concentration tests were made to separate the sulfide minerals from the fluorspar and to attempt to prepare lead-zinc and fluorspar concentrates of marketable grade"--Scope of Work Done, page 2.

Austenite Grain-Size In Low-Carbon Steels And The Coercive Force Of Case Carburized Steels, Thomas Robert Graham

Masters Theses

"The objective of this investigation was to investigate the various methods for determining austenite grain-size and make a comparison of the results obtained by these methods"--Introduction, page 2.

An Acoustical Investigation Of Parker Hall Auditorium At The School Of Mines And Metallurgy Of The University Of Missouri, John Douglas Martin

Masters Theses

"The auditorium in Parker Hall on the Missouri School of Mines campus has been noted locally for its poor auditory characteristics. At times in the past corrective treatment has been considered but no detailed or experimental data were gathered. In September of 1934 the writer was detailed under an FERA project to study the room and to determine the best method of correction"--Introduction, page 1.

The Fluorine And Manganese Content Of Certain Missouri Waters, Erwin Charles Hoeman

Masters Theses

"Since early in 1931, considerable attention has been brought to bear upon the subject of fluorides in drinking water supplies, following the discovery of high fluoride concentrations in waters consumed by persons afflicted with the dental defect known as mottled enamel. Analyses have been made, in the course of this study, of a comparatively large number of Missouri waters. The waters analyzed have been collected and made available by the Missouri Geological Survey and Water Resources. They have been secured from diverse sources and include surface waters and underground waters from different geological formations, throughout the State of Missouri"--Introduction, page …

The Bromine And Iodine Content Of Certain Saline Ground Waters Of Missouri, Erwin Carl Meckfessel

Masters Theses

"This report on the saline waters of Missouri covers a preliminary investigation carried on in cooperation with the Geological Survey of Missouri and through the funds appropriated for an F E R A project.

The information contained herein will give the bromine content of the saline waters of Missouri from those districts from which samples were obtainable. The samples were obligingly furnished by the Missouri Geological Survey together with a complete geological, geographical, and chemical analysis of each sample.

The relationship between the occurrence of bromine in saline waters of other parts of the country and those saline waters investigated …

The Photobromination Of Azobenzene, Oden Cass Garst

Masters Theses

"The purpose of this thesis is to make a study of the photobromination of azobenzene. The effect of various variables has been studied. The factors considered were, temperature, frequency of light, and concentration. Information on photobrominations is of great scientific importance, as it opens up a comparatively new field of research, and also contributes further data which helps to establish the quantum theory, if indeed this theory is still in controversy"--Introduction, page 3.

A Study Of The Effects Of Paraffin Wax Upon The Viscosities Of Lubricating Oils, Charles Leo William Hunze

Masters Theses

"The determination of the mean molecular weight of oils and paraffin waxes may have significance as: (1) an important property from a purely research point of view; (2) a step towards structure determination; (3) a study of molecular association with viscosity, making possible the application of well established viscosity binary mixture formulas to oil blends and oil and paraffin wax blends; (4) an aid in the calculations of latent heats for refinery engineering purposes (see A.A. Ashworth's applications of this property); (5) a possible means for identifying bitumens of unknown origin, and determining the approximate proportion of each type in …

A Study Of The Evaporation Of Organic Liquids And Mixtures Of Organic Liquids, George Walter Eckert

Masters Theses

"The purpose of this thesis is to make a study of the evaporation of organic solvents. The relative rates of evaporation of the single substances and binary and ternary mixtures are to be considered. A study of the changes in composition of binary and ternary mixtures that occur on evaporation are to be made. Information on the evaporation of organic liquids is important in relation to lacquers, and for that reason the solvents used in this work are liquids commonly used in making lacquers"--Introduction, page 2.

A Method For Increasing The Iodine Value Of The Saturated Fatty Acids, Richard Groves Holmes

Masters Theses

"The work covered by this thesis was undertaken with the idea of finding a method whereby unsaturated oils, of the drying type (those having iodine values of one hundred fifty or above), could be made from the saturated fatty acids. After an exhaustive search of the literature no evidence was found that this means of producing the unsaturated acids had ever been developed. Work has been done on the chlorination products of the fatty acids, the processes being covered by patents. No evidence however was given as to the possible structure of these compounds"--Introduction, page 1.

The Relation Between The Mean Molecular Weight And The Absolute Viscosity Of Lubricating Oils, John Isler Moore

Masters Theses

"Of all the properties required of a good lubricant the most important is that of the viscosity at the temperature of its use. Most lubricants consist of oils blended or compounded together in such a way as to produce an oil of a desired viscosity, falling in the special group of viscosities expressed by the Society of Automotive Engineers in their tabulations.

There have been several methods developed to enable the refiner to blend quickly and efficiently although Bell stated that the methods were largely that of trial and error. Herschel formed a chart for blending by the logarithmic rule …

The Control Of Anode Corrosion, Edward Arthur Godat

Masters Theses

"This particular study of the control of anode corrosion in connection with the production of zinc by electrolytic deposition from commercial solutions is a continuation of work started at the Missouri School of Mines and Metallurgy in 1929. It is not a new problem or even a new phase of the problem, but rather an attempt to confirm some of the ideas brought out in previous work and to perhaps more definitely establish some of the conclusions drawn from insufficient data, by more extensive tests and by attacking the problem from a slightly different angle"--Introduction, page 1.

Investigations Of Diversion On The Lower Mississippi River, Elmer John Sperling

Masters Theses

"The purposes of this investigation were severally as follows: (a) To determine the feasibility of digging pilot channels to scour out channels through the Beouf and Atchafalaya basins of sufficient size to handle the project flows contemplated for these basins in time of superflood. (b) To determine the best forms of the pilot channels and the best approximate dimensions. (c) To determine velocities conducive to erosion, transportation, and deposition; the manner and rate of enlargement under below-bank, bankful, and overbank flows; and the character of trace to be expected after enlargement of the proposed channels. (d) To investigate any suggested …

A Study Of Influence Line Analysis Of Stresses In A Cantilever Steel Highway Bridge, Lawrence King Snyder

Masters Theses

"As its name implies, this thesis introduces to the reader the basic conceptions and principles of the use of influence line analysis of the structural theory relating to calculation of stresses in a steel cantilever bridge truss"--Preface, page i.

A Relationship Between The Mole Fractions And The Absolute Viscosities Of Blended Lubricating Oils, Ernest Reginald Epperson

Masters Theses

"The viscosity of binary liquid mixtures has been a subject of much investigation, but most of the work has been done with mixtures of substances other than lubricating oils. Lubricating engineers have found viscosity to be the most important property of a good lubricant, though up to the present time no one has succeeded in deducing a satisfactory expression by which the viscosity of a blended lubricant may be calculated from a knowledge of the physical properties of its components. This investigation has been an attempt to find a relationship between the absolute viscosity of a blended lubricating oil and …

Concentration Of An Oxidized Lead Ore From Southeast Missouri, Robert Edward Evans

Masters Theses

"In the main ore bodies of the Southeast Missouri Lead Belt the lead occurs as galena disseminated in dolomite. The concentration in the mills is by tabling and flotation. The grade of the concentrates and the recovery of the galena are excellent. However, in certain areas of some of the mines ore has been developed that does not concentrate so readily. Because of its reddish brown color this ore is known locally as "red ore", and the presence of oxidized lead has been suspected. The purpose of this investigation was to determine the extent to which oxidized lead minerals were …

A Study Of Some Methods Of Concentrating Uranium And Radium In Carnotite Ore, H. L. Gibbs

Masters Theses

"Carnotite ore is a source of radium and it is the recovery of this element which is chiefly sought in its treatment. The radium results from the radioactive disintegration of uranium which is one of the constituents of the yellow mineral carnotite. The ores are largely low grade. Higher grade pockets occur scattered in the deposits and because of their irregular occurrence are not easily located. The larger low grade deposits which are more easily accessible contain considerable quantities of calcium carbonate and oxide minerals. These cause a high consumption of the acid used in the chemical treatment of the …

The Solubility Of Calcium Sulfate In Sodium Chloride Solutions, Edward Walter Mockobey

Masters Theses

"The purpose of this investigation was to determine the effect of sodium chloride on the solubility of calcium sulfate, and also, if possible, the effect of sodium chloride on the transition temperature for gypsum and anhydrite"--Purpose of the Investigation, page 4.

A Qualitative Study Of Arsine And Stibine Reactivity Toward Inorganic Salts In Certain Solvents, John Edgar Antener

Masters Theses

"The effects of arsine and stibine on some substances have been investigated by various workers and recorded without any attempt at systematic classification. In this work a more comprehensive study of the precipitating effect of arsine and stibine on common inorganic salts in certain solvents, namely, water, ethyl alcohol, ethyl ether, acetone, carbon disulphide, carbon tetrachloride, chloroform, and benzene has been made, with an attempt at reactivity classification"--Introduction, page 1.

A Study Of Anode Corrosion And Its Influence On Cathode Purity In Electrolytic Zinc Production, Harold John Roesser

Masters Theses

"Anode corrosion is a problem with which electrolytic zinc producers have been concerned from the beginning of the practice. It has been attacked here from the view of modern practice, using alloyed anodes"--Introduction, page 1.

Flotation Of A Western Complex Ore, Guy Verdier Martin

Masters Theses

"The flotation of the complex sulphide ore, which is the subject of this investigation, has been in progress on a large scale for several years. As the operation has been successful it follows that the ore dressing methods have been developed in much detail. For further improvements an intense investigation is required. The complex nature of the ore opens many avenues of research along some of which clues may be found that will lead to ultimate savings. It is along a few of these avenues that this investigation has been directed. Hence an effort was made to add to the …

Comparison Of Results Obtained On Ores From The Tri-State Zinc-Lead District After Grinding To Different Sizes And Concentrating By Flotation, Hans Maucher

Masters Theses

"The purpose of this investigation is to compare the phenomena observed in concentrating a zinc ore by flotation, using a constant and new flowsheet as described a few pages later and varying only the sizes to which the headsamples are ground previous to each test"--Summary, page 1.

The Solubilities Of Alkali Chlorides And Sulfates In Anhydrous Alcohols, Emmet Rudolph Kirn

Masters Theses

"A search of the literature for data on the solubilities of inorganic salts in various anhydrous alcohols will show that comparatively little work has been recorded. Most of the work has been done on salts in aqueous normal alcohols and practically all of this data concerns only methyl and ethyl alcohols. This information shows a wide divergence in results with different workers. Perhaps these differences in data may be attributed to an error in that the alcohols may not have been absolutely anhydrous, for even small traces of water greatly affect the solubility of the salts. Again, the methods of …

A Study Of The Electrolytic Determination Of Lead, Philip Hall Delano

Masters Theses

"The electrolytic determination of lead is one of the most used methods, particularly for control work and where large numbers of analyses have to be run each day. The method is adopted because of its simplicity and because of the small amount of the chemist's time required. It is particularly suited for the determination of small amounts of lead. However, it has been noted that deviations from certain conditions produce results which vary widely from the actual amount of lead present, though results which check with each other may be obtained. Certain elements interfere with the determination and must be …

Laboratory Concentration Of The Missouri Iron Ores Of Iron Mountain And Pilot Knob, Strathmore Ridley Barnott Cooke

Masters Theses

"The purpose of this investigation was to ascertain whether the more important iron ores of Missouri would be amenable to beneficiation to produce high grade concentrates. In the southeastern section of Missouri are found many small deposits of high grade iron ores, and a few large deposits of comparatively low grade ore. The former consist chiefly of red and brown hematite and limonite ores that are in no need of beneficiation. the low grade iron orebodies are relatively large in extent, and, if they could be beneficiated successully [sic] and economically would be of value. Accordingly, the major portion of …