Digital Commons Network^™

The Zone-Refining Of A Lead-Bismuth Alloy, Edward James Westerman

Bachelors Theses and Reports, 1928 - 1970

Zone-refining, the purification of a metallic ingot resulting from the passing over its length of a comparatively short molten zone, has been found useful in the purification of several metallic elements. The impurities present in an elemental metal are often more soluble in the molten zone than in the solid material, and are carried to one end of the bar in the molten zone. This molten-zone movement can be repeated any number of times on a metallic ingot, with the zone always being moved in the same direction.

Investigation Of The Current Distribution On An Antenna In A Waveguide, David J. Freeman

Masters Theses

"In a communication system composed of several networks and transmission systems, it is necessary for all parts of the system to be impedance matched so that medium energy transfer is possible.

One of the recent transmission systems which has been developed is the wave guide. With the advent of the wave guide the communication engineer is immediately faced with the problem of coupling existing systems and networks to his newly found mode of transmission.

Practically this coupling problem reduces to one of feeding radio frequency energy to the wave guide with some conventional transmission line such as a coaxial line. …

Prediction Of Vapor-Liquid Equilibria, Daniel James Mchale

Theses

Several equations for predicting vapor-liquid equilibria from the physical properties of the components have been proposed in the literature. Two equations of this type proposed by O. Redlich and others have been investigated to determine their utility.

Results indicate the two equations give fairly satisfactory results for nearly ideal solutions, but are unsatisfactory for non-ideal solutions. Knowledge of molecular interactions in the solution would be necessary before the predictions could be used with confidence.

Use Of Liquid Sulfur Trioxide As A Sulfonating Agent For Organic Compounds, Herman Gustav Weiland

Theses

Dodecylbenzene was sulfonated with SO₃ and evaluated as to ash, sodium sulfate, degree of sulfonation, and was also compared with an oleum sulfonation. Its homolog, octadecylbenzene, was made, sulfonated, and found to be less effective as a wetting agent.

Two-ethylhexyl cinnamate, oleic acid, and propyloleate were also sulfonated with good yields and evaluated.

Yields in the sulfonation of Di-2-ethylhexyl maleate were very low. There was evidence of the SO₃ splitting the ester and oxidising it to maleic acid.

The reduction of 9-octadecenophenone, according to Clemmenson's Method, led to the formation of a polymer.

Esters Of Sulfanilic And Substituted Sulfanilic Acids, Stephen James Kovalsky

Theses

Attempted esterification of p-acetaminobenezenesulfonyl chloride with any of the low molecular weight alcohols in aqueous systems always results in the formation of sulfanilic acid. When conducted in a non-aqueous medium, the desired esterification did not occur. A water soluble compound formed, instead, which has not yet been identified.

A study was made of sulfanilic acid esters. Alcoholysis reactions involving the butyl ester and methyl alcohol were successful only when the reaction was conducted under pressure and under anhydrous conditions.

The Formation Of Zinc Ferrite From Zinc Sulfate And Ferric Oxide, Robert E. Morris

Bachelors Theses and Reports, 1928 - 1970

Samples of zinc sulfate and ferric oxide were roasted for periods of one, two and three hours at temperatures between 750° and 1000°C. The per cent zinc oxide combined, as zinc ferrite, was determined by dissolving the soluble zinc in a ammonium-ammonia chloride solution. Six samples were roasted at 750°C to determine the degree of decomposition of zinc sulfate to zinc oxide and sulfur trioxide.

Drilling And Drilling Trends In The United States For Mining, Sidney D. Cooper

Bachelors Theses and Reports, 1928 - 1970

This thesis, which is a requirement for a degree in Mining Engineering, emphasizes many current drills and drilling trends; however, without a complete discussion of the numerous factors that effect drills and drilling the reader would still be at a loss in selecting a drill to fit his particular need. With this purpose in mind, I have first attempted to discuss the many variables which must be considered and this is followed by the various types of drilling and drills.

Prospecting For Uranium In Montana, Louis Karhi

Bachelors Theses and Reports, 1928 - 1970

Atomic Energy Commission releases reports of investigations such as RMO, RME, TEI and TEM reports, etc., also releases airborne anomaly maps. Various libraries and A.E.C. offices have these reports on file. The Montana School of Mines library has maps, various reports on the mineral industry, and receives reports prepared by or for the Division of Raw Materials of the A.E.C. Certain other libraries are designated as official U.S. Atomic Energy Commission Depository Libraries and receive copies of all types of unclassified reports.

Evaluation Of Sprinkler Systems In Northern Utah, Murray J. Gavel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Sprinkling as a method of irrigation has been expanding rapidly in the United States, with acreages irrigated by this method increasing every year. One of the major reasons for the expansion is the great improvements that have been made in sprinkler irrigation equipment. Light weight aluminum pipe, with quick couplers, improved pump and motor efficiencies have all made sprinkler irrigation more desirable. High efficiency of water application, labor requirements, and favorable plant response have also favored the expansion.

Another reason for the increase in sprinkler irrigation is that new lands being brought under irrigation are often not adaptable to surface …

A Study Of Tunnel Demolition By Hasty Methods, Richard Lee Bullock

Masters Theses

"The use of explosives to construct obstacles which impede the enemy or close his routes of communication has long been employed by our armies. They have developed fairly effective methods for destroying bridges, setting up road craters and constructing abatis. However, one phase of obstacle construction, that of tunnel demolition, has been neglected in that no procedures or methods have been formulated which will aid in the proper destruction of tunnels.

At the present time, under the auspices of the Department of the Army, The Missouri School of Mines and Metallurgy is conducting a research program on tunnel demolition. The …

38th Annual Meeting, 1954. Abstracts Of Papers, Academy Editors

Journal of the Arkansas Academy of Science

No abstract provided.

The Properties Of Cold Rolled - Stress Relief Annealed 70-30 Cartridge Brass, Robert F. Hartmann

Professional Degree Theses

"Because of the possible commercial application of the proposed treatment of 70-30 brass, this work was undertaken. In addition, the data resulting from this work will result in a better understanding of the treatment of brass.

The objectives of this work were as follows:

1. Determine if higher strength and better spring properties can be realized from a process for commercial 70-30 cartridge brass wherein the regular recrystallizing anneals between rolling reductions are replaced by stress relief anneals.
2. Determine if it is possible, using the above process, to produce essentially fully recrystallized metal with an average grain size below that usually …

Aspects Of Quality Control In Foreign Manufacturing Operations, Erich Rolaff

Professional Degree Theses

"The present thesis is being written to illustrate some aspects of quality control in foreign manufacturing operations; that is, foreign to the United States. It is obvious that the conditions and probable variations from U. S. practice in any manufacturing industry will vary tremendously according to the industry under review. In the present case we shall be dealing with manufacturing operations involving the production of so-called "dry cells" and "dry batteries", and to a somewhat lesser degree with the production of projector arc carbons for use in motion picture theater projection. It will be, therefore, helpful if a brief history …

Preparation And Separation Of Metallic Chlorides, Norbert Felix Neumann

Doctoral Dissertations

"The use of chlorine and chlorine compounds as metallurgical reagents has long been known to the metallurgical industry. Recent developments in corrosion resistant metals and alloys as well as new equipment and techniques have led to a revival of chlorine processes. Many of the objections to the use of chlorine in metallurgical operations have been overcome and many are being reconsidered, as evidenced by the new processes in which chlorine and chlorides are the primary reagents. The Betterton process employs chlorine or lead chloride for the dezincing of lead. Ductile zirconium and titanium have been made by reducing their chlorides …

News Bulletin - November-December, 1954, Civil Aviation Medical Association

Browse all Civil Aviation Medical Association Newsletters

A 13 page newsletter of the Airline Medical Examiners Association which was published on an irregular basis from 1950-1957. This organization was a predecessor of the Civil Aviation Medical Association. The newsletter provided news about civil aviation medicine and information related to the organization.

Linear Growth Rates Of Single Copper Sulfate Crystals, Arthur Oswald Hansen

Theses

The purpose of this work was to study and measure the factors influencing crystal growth.

Approximately 250 single crystals of CuSO₄.5H₂O were grown under controlled conditions of supersaturation, solution velocity, and temperature.

The data from this work indicates that:

(a) Crystal growth rate is independent of crystal size for the size range covered (4 to 12 mesh).

(b) Crystal growth rate is directly proportional to the degree of supersaturation, or driving force for each concentration of solution studied.

(c) Crystal growth rate varies exponentially with the velocity of the solution passing the crystal
R_D = …

The Preparation Of 2-Aminophenol-4-Sulfonic Acid From Sulfanilic Acid, Edward Jacob Mach

Theses

Sulfanilic acid (I) was examined for purity and character. Sodium and potassium salts were acetylated and their isolation and yields were investigated.

The salts were nitrated with mixed acids and the reaction mixtures were treated in various ways to ascertain a good method for isolating the desired 2-nitro-sulfanilic acid (II). An attempt was made to characterize the reaction products, and to devise quantitative methods to estimate the yield of 2-nitrosulfanilic acid. A previously unreported by-product of the nitration, 2,4,6-tri-nitroaniline (He), was isolated. Several new salts of 2-nitrosulfanilic acid were prepared, and a possible new derivative was observed from the reaction …

Heat Capacities Of Ethane Over A Wide Range Of Temperature And Pressure, Thomas Agens Reiter

Theses

The effects of pressure and temperature on the isobaric heat capacity, the constant volume heat capacity, and the ratio of heat capacities of ethane are presented. The range of conditions covered are pressures from 0 to 10,000 psia and temperatures from 180 to 1400°F. The calculation of these effects is based on equations derived from the Benedict-Webb-Rubin equation of state. The derived equations express the deviations of the heat capacities from ideal gas behavior.

The results show that ignoring the effect of pressure en the heat capacities of ethane may lead to large errors in engineering calculations. Graphs and tables …

Investigation Of Inclusions In Armco Ingot Iron, Edwin J. Duncan

Bachelors Theses and Reports, 1928 - 1970

Various chemical and electrolytic separation methods were investigated in an attempt to separate the in­clusions in Armco ingot iron. Residues obtained were X-rayed for identification purposes. The microstruc­tures of this iron were studied with the object of de­termining the relative sizes, locations, and possible compositions of the inclusions.

Geology Of The Ragged Point Oil Field Musselshell County, Montana, David M. Amos

Bachelors Theses and Reports, 1928 - 1970

The Ragged Point oil field is located in Northwest Musselshell County, in the Lake Basin field of central Mon­tana, and on the western border of the Great Plains region. The surface topography is that of a plain marked by erosion and moderate folding. The stratigraphy of central Montana shows periodic marine invasions from the Cordilleran trough, with normal marine limestones interbedded with sandstone sand shales. These sediments are over 12,000 feet thick, with the Creta­ceous Eagle and Colorado formations exposed at the surface on the Ragged Point anticline. Undifferentiated Cambrian lime­stones and shales are the oldest rocks encountered in drilling.

Investigation Of The Acid Degradation Of 2-(4-Methoxybenzylamino)-Pyridine, Anthony Thomas Oropollo

Theses

This paper represents work done in connection with an investigation of the products resulting from the reaction of dilute sulfuric acid and 2-(4-methoxybenzyl-amino)-pyridine. Brief contact between these reactants at temperatures below 80°C give rise to a water soluble salt of the amine. The amine may be precipitated from the solution by the addition of sufficient alkali.

Under the conditions considered in this paper, prolonged contact of reactants at temperatures above 80°C, a non-crystalline condensation product is obtained in addition to the amine salt.

Attempts to identify this product were unsuccessful. However, in connection with the characterization work, two relatively little …

Shaft Sinking Investigation, Harold Foss

Bachelors Theses and Reports, 1928 - 1970

This paper, investigating shaft mucking, has been prepared as a partial requirement for the degree of Bachelor of Science in Mining Engineering. In the following material I have attempted to collect and compile all available information on mechanical shaft mucking, to compare and contrast the different methods and to trace their development through to the latest innovation. This development of the investigation is purposely being used to lead to a new method which will be discussed hypothetically as a conclusion to the paper.

Southwestern Extension Of The Pondera Field, Paul P. Garding

Bachelors Theses and Reports, 1928 - 1970

Oil was discovered in the Pondera field in June 1927 following work done by E.B. Emrick. The initial discovery well, located in section 17, T. 27 N., R. 4 W., was not a commercial oil producer. Its initial production being 3 barrels of oil and 3,500,000 cubic feet of gas per day. Rapid expansion followed until 1929, when the field reached its peak of production.

Guide To The Preparation Of Military Reports Of A Technical Nature, The Engineer School, Fort Belvoir, Virginia, Robert L. Bolin Depositor

United States Army: Publications

This is a brief text prepared for instructional purposes at the US Army Engineer School at Fort Belvoir, VA.

The manuscript covering the preparation of a technical report has been prepared for two reasons: first, to serve as a basic text for instructing student officers in the techniques of report writing and second, to serve as a means of reference. Student officers cannot be expected to retain in their minds all the minute details of report writing to which they are exposed during their period of school training. Considerable time may elapse after graduation and before they are called on …

Hydrogen Overvoltage On Titanium, Sheng-Tai Shih

Doctoral Dissertations

"The hydrogen overvoltage has been defined as the difference between the potential of the working electrode (cathode) and the theoretical reversible value for the same solution. This definition brings out the difficulty involved in the measurement of the "theoretical reversible potential for the same solution” as the potential of the hydrogen electrode in such a solution is usually different from the value of a standard reversible hydrogen electrode, for which the activity of hydrogen ions is set as being “1” and the potential arbitrarily set as being “0”. Besides, it is sometimes necessary to add addition agents to the solution …

A Study Of The Bonding By Air-Setting Refractory Mortar At Elevated Temperatures, Bhikhubhai Mahadeo Sedalia

Doctoral Dissertations

"The importance of a suitable material for the laying of bricks in furnace and kiln construction has been recognized by the refractory industry for a long time. It is necessary that a strong bond should develop between the bricks to impart strength to the entire construction work. A weak joint would form the weakest link and dangerously weaken the whole structure.

Such being the importance of the bond, the refractory industry has made quite an effort to develop jointing materials which would produce strong bonds. During the last two decades, due to intensive research and development work, many good bonding …

Carbon Monoxide Attack Of Refractories, William A. Frad

Doctoral Dissertations

"The disintegration and failure of fire clay refractories due to the action of carbon monoxide has been studied tor a period at about fifty years. The most important application is in blast furnace refractories. Similar failures due to carbon deposition, involving other gases such as methane, have been noted and less extensively studied. Failures due to the action of gases other than carbon monoxide are beyond the scope of this thesis. Occasional attempts to find some agent to prevent disintegration have been mentioned in the literature. In this study the number of such substances and the results of their action …

Effect Of Carbon Content In Steels Upon The Deposition Of Titanium From A Fused Salt Bath, Reinhard Paul Abendroth

Masters Theses

"STATEMENT OF PROBLEM Previous work done at the Missouri School of Mines and Metallurgy on the deposition of titanium upon various metals, especially iron and steel, bas shown that titanium can be deposited upon ingot iron and. low carbon steels with comparitive ease. Difficulty was encountered in attempts to deposit titanium upon steels of higher carbon content and upon cast irons.

For this reason, it was decided to investigate more thoroughly the relationship between the carbon content of various steels and the quality of titanium coatings deposited on these steels. Once this relationship had been established, a suitable theoretical explanation …

Tunnel Rehabilitation, Jay C. Dotson

Masters Theses

"This paper is an outgrowth of research conducted at Missouri School of Mines and Metallurgy over a two year period. The purpose of the study is to assemble into one volume information that is pertinent to the rehabilitation of tunnels. Notwithstanding the voluminous size of the paper, much descriptive material necessarily has been omitted because of the far-reaching scope of tunneling practices and of the specialized fields therein. An extensive bibliography has been prepared to supplement the material that has been selected for presentation. Through consultation with tunnel men of all ranks, observations in the field, and an intensive search …

An Investigation Of Continuous Steel Beams In The Plastic Range, Robert Adams Shoolbred

Masters Theses

"The purpose of this thesis is to investigate the action of beams in the plastic range. The test specimen will be a 4WF 13 structural shape continuous over three supports having equal span lengths of seven feet. Three types of loading were chosen. The first loading will be concentrated in the center of each span. The second loading will be a concentrated load in the center of one span only. The third loading will be the settlement of the two end supports until a plastic hinge forms at the center support, then the two spans will be loaded with concentrated …