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Mechanical Vibration Of Vacuum Tubes, Jerry Dale Swearingen

Masters Theses

"Since the beginning of the art of vacuum tube building, vacuum tube engineers have been faced with many mechanical problems as well as electrical problems.

Early mechanical problems were comparatively small because most of the tubes were used in stationary apparatus where little or no vibration was envolved.

As time went on, vacuum tubes were placed in portable equipment and this useage established the need for a tube that was mechanically strong enough to give reliable electrical behavior where the tube was subjected to considerable vibration….

Recently it has been shown that vacuum tubes operating in the instrument cabins of …

Technical Report Writing, Civilian Personnel Division, Office Of The Chief Of Engineers, Department Of The Army, Robert Bolin , Depositor

United States Army Corps of Engineers, Omaha District

This is a brief manual intended primarily to instruct junior engineering personnel working on civil works for the Corps of Engineers in the proper procedures for preparing reports. Some of the contents were papers delivered at a conference on the use of English in Corps of Engineers reports.

The manual is complicated by the Corps of Engineer’s roles as a military organization and as an organization managing civil public works projects and public facilities and by the special problem of having to answer inquiries of members of Congress.

Shortly before this guide was issued, the Engineer School had issued a …

A Study Of The Structure Of Titanium Diffusion Coatings On Iron And Steel, Pao-Jen Chao

Masters Theses

"The Problem of the Thesis: A series of experiments have been made in the Metallurgical. Engineering Department of the Missouri School of Mines and Metallurgy for the investigation of titanium diffusion coatings. The technique of applying the titanium diffusion coatings on iron and steel is still in the experimental stage. A few of the physical properties and chemical compositions of such coatings have been determined, but the structures have not yet been extensively studied. As the correlations of the structures and the desirable properties are valuable for improving the quality or titanium diffusion coatings on iron and steel, an investigation …

The Preparation Of Titanium Tetrachloride From Rutile, Nalin Sen

Masters Theses

"In recent years, considerable interest has been shown in the manufacture of titanium metal because of its outstanding properties both physical and chemical. The commercial process for the preparation of metallic titanium, known as the Kroll process, consists essentially of the reduction of titanium tetrachloride with magnesium in an inert atmosphere to produce titanium metal with magnesium chloride as a by-product.

Since, titanium tetrachloride is the basic compound from which to prepare metallic titanium by the Kroll process, much thought has been given to the preparation of titanium tetrachloride from titanium ores such as rutile or ilmenite.

The present work …

Proposed Revision For Specification For Reflex-Reflective Materials For Highway Signs, James H. Havens

Kentucky Transportation Center Research Report

There are several pertinent factors and considerations that have a direct bearing on the requirements contained in the attached Recommended Special Specification No. 50-R, and it seems appropriate to record them here as reference material either in support of the specification or as information.

The Recovery Of Elemental Phosphorous From Phosphorous-Bearing Sludges, Rajendra Nath Bery

Theses

The theory dealing with the propagation of phosphorus sludges in elemental phosphorus production is generally well known, but it has long been felt that an investigation should be made in order to devise a suitable process whereby it may become possible to effect a separation of phosphorus. It is perhaps unfortunate that while the development of the electric furnace process continued, it sometimes overshadowed the importance of recovering additional amounts of phosphorus by relatively simple and inexpensive means since this is considered vital to the economics of elemental phosphorus production. At the present time, there is no economically feasible process …

The Design And Construction Of An Electrolytic Cell For Aluminum Reduction, Thomas H. Melrose

Bachelors Theses and Reports, 1928 - 1970

The purpose of this investigation was to design and construct a laboratory size electrolytic cell in which to reduce alumina, using the same basic materials that are used in a commercial size cell. The cell was designed to have a capacity of approxi­mately 100 grams of metallic aluminum produced every 8 hours. The cell was constructed so it could be operated continuously.

Application Of The Rotary Principle To Underground Mucking, Walter J. Smit

Bachelors Theses and Reports, 1928 - 1970

Since the beginning of man's utilization of rocks and minerals, he has felt a need for an efficient mover of these materials. Thus, he turned from the sole use of his hands to the development of the shovel, and through the other hand tools-- the hoes, and the fork, and the rake-- he finally came to the manufacture of the heavy, more efficient, large-scale rock movers-- the muckers, and the scrapers, and duckbill loaders.

News Bulletin - May-June, 1954, Civil Aviation Medical Association

Browse all Civil Aviation Medical Association Newsletters

A eight 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.

An Investigation Of The Characteristics Of High Alumina Refractory Castables, Gajendra Nath Mohanty

Doctoral Dissertations

"Refractory castables or concretes, a comparatively new member of the refractories family, are an admixture of highly aluminous cements and graded refractory aggregates, blended in predetermined proportions very much like structural concrete. The refractory aggregates must contain a large amount of fines contrary to the requirements of ordinary concrete. Unlike the Portland cements, which are mainly combinations of calcium silicates, the highly aluminous cements are predominantly calcium aluminates. They are comparatively of a refractory natures, having the hydraulic setting property combined also with high early strength. The discovery of the fact that these refractory concretes could be cast, in situ, …

A Fundamental Study Of Clay Drying Using Ware Of Large Cross Section, Robert F. Grady Iii

Masters Theses

"The drying of clay has been studied extensively in the past by many investigators, some of whom attempted to relate this information to the structure of clay and thereby develop a more vivid picture, while others studied the mechanism of drying in its own right in order to present a useable theory that would allow improvements in the drying operation.

At present the literature is unable to present a theory of the mechanism of drying that is sufficiently general to cover the observed aspects of clay drying. Many and varied mechanisms are presented, but correlation is seldom completely evident between …

Testing Of Missouri Shales For Light Weight Aggregate Production, Jerry D. Plunkett

Masters Theses

"The original objective of this investigation was to determine by testing those clays, shales, and loesses occuring in Missouri in large deposits (over 15 feet in thickness with little overburden), which would be suitable for the production of light weight aggregate. The second objective was to investigate the mechanism of bloating as related to the physical and chemical properties of the above materials, and by using these relationships cause clays which do not naturally bloat, to bloat using some addition. The use of additives would permit the economical use of material closer to the market in many instances.

After the …

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 …

Investigation Of Soil Bricks As A Building Material, Ahmet Ilter

Masters Theses

"The need of a cheap construction material for small village farm construction in Turkey makes soil-cement a most desirable material. What is more, as far as the author knows, soil-cement has not found any application in farm house construction in Turkey as yet. So the author, being acquainted with his native country's house construction problem, and seeing the suitable application soil-cement have on such construction, came to the decision that he should investigate this problem thoroughly.

The main objective of the tests run in this investigation will be to find the strength of different samples of soil-cement. The stabilizer used …

The Design And Construction Of An Electronic D-C Analog Computer, Frederick R. Wagner, William A. Paar

Masters Theses

"To make this project realizable with the funds available and in the time allowed, and to set forth some definite goals, the following objectives were adopted:

1. Design, construct, and place in working order a d-c electronic analog computer capable of solving 4th order linear differential equations with constant coefficients.
2. Include in the design provisions for real time computation, and also fast, repetitive operation.
3. Provide for later expansion of the computer installation.
4. Limit expenditures to $700"--Introduction, page 4.

Mechanism And Measurement Of First Stage Graphitization In White Cast Iron, David S. Gould

Masters Theses

"The original object of this thesis was to ascertain if coercive force measurements could be used for the determination of degree of malleablization in malleable iron. Since first stage graphitization was involved, it was only natural that an interest in the mechanism of first stage graphitization developed. The investigation which resulted from this interest was done primarily for the edification of the author, however it was subsequently deemed of enough importance to be included in this thesis. For this reason the thesis may appear at times to deviate from the original objective"--Preface, page iii.

Comprehensive City Plan Of Vero Beach, Florida, George W. Simons Jr

City and Regional Planning -- Florida

This report contained a comprehensive city plan to develop and expand Vero Beach, Florida in 1953

News Bulletin - August-September, 1953, Civil Aviation Medical Association

Browse all Civil Aviation Medical Association Newsletters

A three 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.

News Bulletin - June-July, 1953, Civil Aviation Medical Association

Browse all Civil Aviation Medical Association Newsletters

A nine 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.

Nonmetallic Mineral Resources Of Montana (Except Fuels), F. L. Rytlewski

Bachelors Theses and Reports, 1928 - 1970

Essentially, the paper is composed of seven parts, each of which concerns a group of related nonmetallic minerals such as ceramic materials, gemstones, or abra­sives. Following the data pertaining to the minerals of each group are index mars locating the major mineral deposits which are known to date. Production and reserve figures are listed by tables in cases where such information is available.

The Development Of Executives, Joseph Ralph Messineo

Theses

The ever-increasing trend toward improved industrial efficiency creates the problem of supplying capable executives. The supply of executive manpower in business corporations ever needs replenishing. Expansion of operations, retirements, and other circumstances cause executive demands and vacancies which must be filled. Therefore, the purpose of this thesis is to analyze and report on what industry is actually doing today to develop executives to meet present and future requirements. Also, it is the author's intent to formulate a comprehensive executive development program that can be adopted with some limitations by industry for the building of an executive reserve.

In order to …

Ultrafiltration In The Pigment Field : A Critical Literature Survey, Charles Walter Manger

Theses

The objective in this work has been to determine, through a critical literature survey, the possible application of ultrafiltration, and other related techniques, towards the solution of certain problems encountered in the research and testing of various pigments.

Among these problems may be mentioned the following:

1. The determination of water-soluble salts in pigments, which when dispersed in water to leach out the salts, tend to peptize, thus being unfilterable through the usual filter paper. Among these pigments are the following: iron blue, certain chrome yellows, pigment green B, copper maroon, and several others. It may be added that these pigments …

Correlation Of The Number Of Theoretical Plates Vs. Reflux Ratio, George Ignatius Parisi

Theses

A correlation is presented from which the number of theoretical plates for a given separation by distillation can be estimated as a function of the reflux ratio. The effects of relative volatility and feed composition upon such a correlation are also studied. Smoker's (1) equation was used in calculating the data. The results were obtained by varying the several parameters which have to be given for any separa tion desired. These include feed compositions of 0.25, 0.50, and 0.75; relative volatilities of 1.1, 1.2, 1.5, and 2.0; and various reflux ratios. The overhead product and bottoms product compositions were kept …

Host Rocks And Gangue Minerals Associated With Copper Deposits In Plutonic Igneous Rocks, Richard D. Montgomery

Bachelors Theses and Reports, 1928 - 1970

All of the information on the various districts has come directly from published reports. The investigation was suggested by Mr. Forbes Robertson. The geographical extent of the deposits was confined to the western United States. Many of these deposits are of the disseminated porphyry type. A few of the de­posits, such as at Butte, Montana, were of the fissure vein type.

The Indium-Mercury Constitutional Diagram, Bert E. Lake

Bachelors Theses and Reports, 1928 - 1970

Whenever metals differ greatly in electropositivity, intermetallic compounds are likely to form in preference to solid solutions. 21ercury and indium show a considerable difference in electropositivity. This would indicate that intermetallic compounds may play an important role in the con­stitutional diagram for the mercury-indium system.

Maintenance And Operation Of Equipment, W. A. Tincher

Kentucky's Annual Forum on Transportation

No abstract provided.

Report No. 2 On A Test Road For The Evaluation Of Sandstone As An Aggregate In Plant-Mix Bituminous Pavements, Ellis G. Williams

Kentucky Transportation Center Research Report

This report which presents results from additional study of the Sandstone Test Road located on S.R. 30 in Magoffin and Breathitt Counties, is a supplement to Report No. 1 dated April, 1952. The project consisted of a laboratory investigation and construction of a 20-mile test road, with all the original work carried out over a period from early 1950 to November 1951.

Details concerning both laboratory and field work are contained in Report No. 1 and need not be discussed here. However, to keep the general objectives of the study clear, they are restated as follows:

1. To develop comprehensive information …

Application Of Geology To Highway Engineering In Kentucky, L. E. Gregg, James H. Havens

Kentucky Transportation Center Research Report

Kentucky, too, is a state where geology abounds. Little credit for this, however, lies with the highway field, because such a prosaic subject is frequently overshadowed by such features as Mammoth Cave, Sky Bridge, Cumberland Falls, Pine Mountain, and extensive underground mineral deposits. Nevertheless; the influence of geology in the highway industry is growing, and it is obvious that some potential contributions have not yet been realized.

Summary Of Major Events And Problems, Intelligence, Security, And Safety Office, Office Of The Chief Of Ordnance, Department Of The Army, 1 January - 30 June 1953, Robert Bolin , Depositor

United States Department of Defense Military Intelligence

This is a digital version of a portion of a report. As the name indicates the Intelligence, Security, and Safety Office (IS&S) had diverse responsibilities within the Office of the Chief of Ordnance (OCO). That report is in the National Archives, Record Group 156: “Records of the Office of the Chief of Ordnance …Histories of Staff and Operating Offices and Divisions of the Chief of Ordnance, 1946-1954, IS&S Office, July 195 thru June 1953,” Box C 8.

In the early 1990s, Robert Bolin copied the section of the report related to the Intelligence Branch within IS&S. This document is a …

History Of The Intelligence, Security, And Safety Office: Office Of The Chief Of Ordnance, 1 July 1951 - June 1953, Robert Bolin , Depositor

United States Department of Defense Military Intelligence

This is a digital version of portions of four semiannual reports. The Intelligence, Security, and Safety Office had diverse responsibilities within the Office of the Chief of Ordnance within the Department of the Army. Those reports are in the National Archives, “Record Group 156: Records of the Office of the Chief of Ordnance…Histories of Staff and Operating offices and divisions of the Chief of Ordnance, 1946-1954, IS&S Office, “ Box C 8.

In the early 1990s, Robert Bolin copied the sections of those reports related to the Intelligence Branch within the Intelligence, Security, and Safety Office. This document is a …