Engineering Commons^™

Viscosity Of A Three Component System, Acetone-Ethanol-Water, At 25°C And 30°C, Peter Fred Widmer

Theses

The viscosity in the three component system Acetone-Ethanol-Water has been determined over a range of compositions at two different temperatures, 25°C and 30°C. Compositions have been varied in increments of ten percent by weight to cover all possible combinations of the three components. The data obtained are presented on triangular coordinate graph paper with lines of constant viscosity indicated and also in tabular form.

The Control Of Industrial Sales Operations, Herbert Gieser

Theses

With selling becoming so competitive in the past quarter century, managerial control over the sales organization is necessary for survivals Essentially, controls cover the regulation and administration of territories, expenses, and the measurement of performance.

The purpose of this thesis is to investigate the various phases of controls, the many plans which can be applied, and the advantages and disadvantages of these plans. Emphasis is placed on the case studies of some of the many firms which have put these control programs to work successfully.

This thesis is intended for management executives, sales managers, and sales staff executives in equipping …

An Analysis Of Predetermined Time Systems, Richard Otto Schmid

Theses

This paper endeavors to compare three predetermined time systems, namely; Work-Factor, Methods-Time Measurement and Basic Motion Time-study, elemental-by-elemental, through the use of a series of detailed analyses. The following information in the form of conclusions and recommendations has been set forth from the investigation of the various comparative analyses contained herein:

1. Reasons for the variation between the elementals.

2. A chronological order of attack for further study with an eye to accomplishing the most in the shortest possible time.

3. The results of a composite analysis which utilizes the most realistic elemental definitions of the three systems. (This includes the comparison of …

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Aryl Sulfonation In Presence Of Phosphrous Trichloride, William Calvert Tanner

Theses

With sulfuric acid as the sulfonating agent, phosphorus trichloride is demonstrated as being effective in facilitating the sulfonation of some aromatic compounds. Optimum conditions are a molar ratio of 0.5 mole of sulfuric acid: 1.0 mole of aromatic compound with 4 - 5% more phosphorus trichloride than is required to react with the available water in the system, and reaction temperatures between 50°C. and 60°C.

The aromatic compounds studied were benzene, chlorobenzene, bromobenzene, and nitrobenzene.

The Use Of Perlite As An Adsorbent, John Herrick Eigler

Theses

The adsorptive properties of perlite, an expanded volcanic glass, have been studied. Several activating treatments were investigated, air oxidation it 400 degrees Centigrade appears to be the best, The adsorption of the basic dye emethylene blue yields a saturation valve of 50 milligrams per gram of perlite. The acid dye cotton blue showed no measurable adsorption. A maximum adsorption of 15 millimoles of acetic acid and one milligram of iodine were found in aqueous solution. A high value of 1.33 milligrams of iodine per gram of perlite were found in methyl alcohol solutions. The surface area of perlite appears to …

Test 620: Mccormick Farmall 450 Lpg, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT: McCORMICK FARMALL 450 LPG TEST A: The manufacturer's representative operates the tractor for a minimum of 12 hours using light to heavy drawbar loads in each gear. This serves as a period for limber up, general observation and adjustments. Adjustments that are permissible include valve tappet clearance, breaker ,point gap, spark plug gaps, clutch and others of a similar nature. No new parts or accessories can be installed without having mention made of it in the report. No data' are recorded during this preliminary run except the time that the engine is operated. BELT HORSEPOWER TESTS …

Test 622: Mccormick Farmall 350 Lpg, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT: McCORMICK FARMALL 350 LPG TEST A: The manufacturer's representative operates the tractor for a minimum of 12 hours using light to heavy drawbar loads in each gear. This serves as a period for limber up, general observation and adjustments. Adjustments that are permissible include valve tappet clearance, breaker ,point gap, spark plug gaps, clutch and others of a similar nature. No new parts or accessories can be installed without having mention made of it in the report. No data' are recorded during this preliminary run except the time that the engine is operated. BELT HORSEPOWER TESTS …

The Rating Of A Power Type Transistor, Richard Lee Mann

Electrical and Computer Engineering ETDs

The purpose of this paper is to describe the test performed and present the results obtained in an attempt to establish the maximum permissible direct current and pulse ratings for the type of CTP-1003 (Clevite Transistor Products) power transistors under typical operating conditions. The manufacturer's specifications for the type of CTP-1003 power transistor are located in Appendix A.

The Effect Of Dynamic Loading On The Stress-Strain Curve Of Foam Plastics, Carroll D. Beaman

Civil Engineering ETDs

No abstract provided.

Test 619: International 350 Utility Lpg, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT TEST A: The manufacturer's representative operates the tractor for a minimum of 12 hours using light to heavy drawbar loads in each gear. This serves as a period for limber up, general observation and adjustments. Adjustments that are permissible include valve tappet clearance, breaker ,point gap, spark plug gaps, clutch and others of a similar nature. No new parts or accessories can be installed without having mention made of it in the report. No data' are recorded during this preliminary run except the time that the engine is operated. BELT HORSEPOWER TESTS TEST B: The throttle …

A New Design Key Locked Insert And Automatic Key Installation Tool, Holt J. Gay

Mechanical Engineering ETDs

There has been an increasing need for a better steel insert or bushing between aluminum and steel bolts in the last few years with the rapid growth of the aircraft and missile industries. The steel insert or bushing threaded internally and externally, by increasing the area of contact with the aluminum raises the strength of the bolt fastening combination approximately 300 per cent or causes a 125,000 PSI bolt to fail rather than 40,000 PSI aluminum to fail. In addition, galling and seizing are practically eliminated. A bolt installed and removed just a few times in aluminum is likely to …

Test 621: International 650 Lpg, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT: INTERNATIONAL HARVESTER 650 LPG TEST A: The manufacturer's representative operates the tractor for a minimum of 12 hours using light to heavy drawbar loads in each gear. This serves as a period for limber up, general observation and adjustments. Adjustments that are permissible include valve tappet clearance, breaker ,point gap, spark plug gaps, clutch and others of a similar nature. No new parts or accessories can be installed without having mention made of it in the report. No data' are recorded during this preliminary run except the time that the engine is operated. BELT HORSEPOWER TESTS …

Test 618: International 650 Gasoline, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT TEST A: The manufacturer's representative operates the tractor for a minimum of 12 hours using light to heavy drawbar loads in each gear. This serves as a period for limber up, general observation and adjustments. Adjustments that are permissible include valve tappet clearance, breaker ,point gap, spark plug gaps, clutch and others of a similar nature. No new parts or accessories can be installed without having mention made of it in the report. No data' are recorded during this preliminary run except the time that the engine is operated. BELT HORSEPOWER TESTS TEST B: The throttle …

The Beneficiation Of A Low-Grade Uranium Ore, Frank P. Howald

Bachelors Theses and Reports, 1928 - 1970

The uranium in the Sponsor's Ore was proven amenable to the standard hydrometallurgical processes-- the acid leach and the carbonate leach. From an economical standpoint, the results of the heap-leaching and flotation studies were not favorable because of low recoveries. The possibility of employing an emulsion-induced selective flocculation flotation procedure still exists.

Artificial Rhodonite: It's Synthesis And X-Ray Diffraction Powder Pattern, Frank E. Jeniker

Bachelors Theses and Reports, 1928 - 1970

This report presents the investigation of three methods of synthesizing artificial rhodonite; fusion of silica and manganese dioxide, prolonged sintering of the compact of manganous carbonate and silica at below liquidus temperatures, and the precipitation by reaction of salts in an aqueous solution followed by sintering. In each case the rhodonitic product was of less than desired purity, containing varying amounts of silica, tephroite, and higher valence oxidized manganese forms, as well as aluminum.

The Vacuum Desulphurization Of Copper Mattes, Robert L. Trevison

Bachelors Theses and Reports, 1928 - 1970

The first application of vacuum techniques to the metallurgical industry was made in the early part of this century by Rohn, a German, who developed vacuum technology to a production status in the specialty metals business. Although extensive use of vacuum processing technology was made in the lamp and electrical industries, the methods used were considered to be impractical up to about ten years ago even though remarkable improvements were made during World War II. Wartime demands for magnesium and for uranium which necessitated the use of a high vacuum in their production led to the perfection of mechanical pumps, …

The Effect Of Antimony And Cobalt On The Current Efficiency And The Grain Orientation Of Deposits During The Electrolysis Of A Zinc Sulfate Solution, Samuel A. Worcester

Bachelors Theses and Reports, 1928 - 1970

Preparation of solutions and apparatus and experimental procedure was described. The effect of antimony and cobalt in a zinc sulfate electrolyte upon current efficiency with increasing time was determined by the hydrogen evolution method. The degree of preferred orientation of grains in the electrodeposits was determined by the reflection method of X-ray diffraction.

Cost Comparison Of Planer Mining And Open-Stope Mining Of Phosphate Rock, George Krempasky

Bachelors Theses and Reports, 1928 - 1970

This paper outlines and describes a proposed mining method and its cost. The object of the paper is to evaluate a low-cost, maximum recovery, underground mining method for mining Western phosphate rock as compared to an open-stope system.

Description Of Sand-Water Pumping Experiment And Preliminary Photographic Investigation, Allen F. Westerdahl

Bachelors Theses and Reports, 1928 - 1970

The objective of this report is threefold: to provide a brief description of the Sand-Water pumping experiment; to describe the flow of sand and water in the experimental equipment; and to present the results of a preliminary photographic investigation of fluorescent minerals in clear plastic pipes.

Techniques Of Underground Sampling And Calculation Of Ore Reserves, James E. Cleveland

Bachelors Theses and Reports, 1928 - 1970

In the mining industries, samples and the technique of sampling play an important role in the life and production of a mine. From the initial prospect to the final pound of ore produced, the production depends on the grade of ore coupled with a mining system that will realize a profit, the one thing a mine cannot survive without.

Design Of A Portable Headframe, Rodney C. Foster

Bachelors Theses and Reports, 1928 - 1970

Present day methods of ore exploration consists of surface geology, geophysical methods and drilling datum. These methods have all produced results, but, the sure way of telling whether ore is present is to look at it in place, determine it's tonnage, grade and ease of mining. This can only be done by the use of a headframe to sink a shaft. Therefore a low cost, well designed and easily constructed headframe would be a great aid to underground exploration work. For this reason the report is devoted to the design of a portable headframe to be used in preliminary ore …

Shaft Mucking Investigation Part 2, Jorge R. Delzo

Bachelors Theses and Reports, 1928 - 1970

By use of several digging principles, such devices as scrapers, clamshells, power shovel loaders, etc., have been perfected. The net results have been an almost complete elimination of hand mucking, an increase of loading speed, and a reduction of sinking costs. Moreover, the elimination of hand mucking has had a favorable psychological effect on the crew, as well as saving physical effort for the other phases of the shaft-sinking cycle.

Diamond Drilling Equipment, William R. Cox

Bachelors Theses and Reports, 1928 - 1970

Diamond drilling is based on the extreme hardness of the diamond enabling it to cut or abade rocks, minerals or other materials found in the earth's crust, or that may be manufactured by man.

Open Pit Mining Operations, James A. Simon

Bachelors Theses and Reports, 1928 - 1970

This report on open pit mining operations will discuss: the history of open pit mining, factors important in the selection of open pit mining and in the development of an open pit, and the various mining and operational methods used in this type of an operation. Stripping coal mining operations will be discussed but the majority of the report will be on open pit metal mines.

Flotation Of Artillery Peak Manganese, Joseph W. Town

Bachelors Theses and Reports, 1928 - 1970

The concentration of low-grade manganese ore from Artillery Peak, Arizona, was studied. Flotation with various emulsions failed to yield concentrations of commercial grade, although manganese recoveries of over 90 per cent were obtained.

Test 616: Mccormick Farmall 230 Gasoline, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT TEST A: The manufacturer's representative operates the tractor for a minimum of 12 hours using light to heavy drawbar loads in each gear. This serves as a period for limber up, general observation and adjustments. Adjustments that are permissible include valve tappet clearance, breaker ,point gap, spark plug gaps, clutch and others of a similar nature. No new parts or accessories can be installed without having mention made of it in the report. No data' are recorded during this preliminary run except the time that the engine is operated. BELT HORSEPOWER TESTS TEST B: The throttle …

Test 617: Mccormick Farmall 130 Gasoline, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT: McCORMICK FARMALL 130 GASOLINE TEST A: The manufacturer's representative operates the tractor for a minimum of 12 hours using light to heavy drawbar loads in each gear. This serves as a period for limber up, general observation and adjustments. Adjustments that are permissible include valve tappet clearance, breaker ,point gap, spark plug gaps, clutch and others of a similar nature. No new parts or accessories can be installed without having mention made of it in the report. No data' are recorded during this preliminary run except the time that the engine is operated. BELT HORSEPOWER TESTS …

The Dc Design Of Reliable Multistable Circuits, Richard H. Williams

Electrical and Computer Engineering ETDs

The reliability of a piece of equipment is a measure of its ability to function as intended. Equipment may malfunction in two different ways. It may fail catastrophically as a vacuum tube does when its heater opens; it may fail gradually as a vacuum tube does when its transconductance slowly falls to an unacceptable level over a period of time. It is not the intent of this paper to study catastrophic component failures, but rather to illustrate a technique whereby gradual failure of circuits can be minimized.

An Investigation Into Salt-Bath Heat Treatment For Titanium, Robert Fred Bechtold

Bachelors Theses and Reports, 1928 - 1970

Titanium, although possessing excellent corrosion resistance in some media, is severely attacked by molten inorganic salts such as those employed in heat-treating baths. Since titanium undergoes allotropic changes, many of its alloys are amendable to heat treatment. The purpose of this study was to discover a salt (or other suitable medium) in which titanium alloys can be successfully heat treated without fear of corrosion.

A Study Of The Possible Use Of Aluminum As A Reducing Agent For Manganese Chloride, William J. Borzick

Bachelors Theses and Reports, 1928 - 1970

Aluminium has been used as a reducing agent for various reactions, the best known of which is the thermit reaction, which is defined in the "Metals Handbook" as; "An exothermic, self-propagating process in which finely divided aluminum powder is used to reduce metal oxides to free metals by direct oxidation of aluminum to aluminum oxide, with accompanying reduction of the less stable metal oxide." (1-15)