Digital Commons Network^™

A Study Of Electrometric Methods For Determining Selenium And Tellurium, Bertie Lee Browning

Masters Theses

"The quantitative oxidation of tellurious acid to telluric acid by potassium dichromate has been shown by Lenher and Wakefield to be applicable to the volumetric determination of tellurium. The purpose of this investigation was to study the applicability of the electrometric method to this titration"--Introduction, page [1].

The Properties Of Refractories In Zinc Metallurgy. Part Iii. Comparison Of Various Clays, Richard Elkanah Sears

Masters Theses

"This thesis...contains a description of a part of a general investigation on the subject of the refractories used in the distillation of zinc. This investigation has been in progress for the past eighteen months at the Mississippi Valley Experiment Station of the United States Bureau of Mines, Department of Commerce, in cooperation with the School of Mines and Metallurgy of the University of Missouri. The first phase of this investigation had for its theme the determination of the properties of the fire clays and body mixtures now used in the manufacture of zinc retorts. The second phase deals with the …

The Properties Of The Fire Clays Used For The Manufacture Of Zinc Retorts, Adolph Harmon Kuechler

Masters Theses

"The ultimate object of this refractories investigation is to develop a body for zinc retorts, or changes in the method of their manufacture, that will result in better retorts than the ones now in use. In doing this, the question of permissible cost must, at all times, be kept in mind. The immediate object of the present phase of this investigation, of which this thesis covers only a part, is to determine the physical and chemical properties of the refractories (fire clays, grogs, bodies, etc.) now used for the manufacture of zinc retorts. This will be a basis for later …

A Method Of Snow Surveying And Its Application To Forecasting Stream Flow, Leslie Bowen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The value of knowing ahead of time the amount of water to be expected from any given stream before the season is to far spent is a valuable asset.

Maine Forts, Henry E. Dunnack

Maine Collection

Maine Forts by Henry E. Dunnack, State Librarian.

Foreword by Percival P. Baxter, Govenor of Maine, State Capitol, Augusta - September 1, 1924.

Sections include: Introduction, Fort Machias, Fort Knox, Fort St.George's, Fort Edgecomb, Forts Popham and Baldwin, North and South Sugar Loaf Islands, Fort McClary, Indians and Their Wars, Fortifications in Maine , List of Old Forts.

Lactose Fermenting Bacteria In The Water Supplies Of The Rolla Quadrangle, Joe Beaty Butler

Masters Theses

"I. Preliminary investigations. This includes the securing of 139 water samples from water sources in the Rolla Quadrangle, and inoculating 1cc samples from these into Dunham's Lactose tubes and thereby getting lactose gas production checks on the field samples. II. Confirmatory tests. This consisted in the isolation of lactose fermenters on Eosin-Methylene Blue Agar and checking of the cultures back through the lactose and then through dulcitel and saccharose so as to complete Jackson's Classification. 106 cultures were classified in this manner. III. Running through a complete set of tests of pure cultures, so as to completely (as possible) identify …

The Solubilities Of Certain Inorganic Salts In Anhydrous Normal Alcohols, William Orval Keeling

Masters Theses

"An examination of the literature shows that extensive studies have been made of the solubilities of inorganic salts in aqueous, normal alcohols, but that little has been done in determining the solubilities in anhydrous alcohols. Northing was found of a systematic study of the solubilities of NaCl, KCl, NaN0₃ and KNO₃ in the lower alcohols over a fairly wide range of temperature. The author has made a study of the solubilities of the above mentioned salts in lower anhydrous normal alcohols at the temperatures 20°C, 25°C, 30°C and 40°C"--Introduction, page 1.

Transmission Of Electrical Energy At 220,000 Volts, Robert Wilhelm Ahlquist

Bachelors Theses

"A. E. Silver at the Annual Convention of the A.I.E.E. in 1919 gives some of the reasons why 220,000 Volt transmission is a logical and feasible commercial proposition. He also gives some of the main features of the undertaking...Owing to the great scope of this paper it has been thought necessary to generalize on the discussion of the first two topics and to treat the next two in more detail"--Statement of Scope of this Paper, pages 3-4.

A Discussion Of Electric Welding, Peter Fergus Thompson

Bachelors Theses

"This thesis deals with the different processes, methods and uses of Electric Arc Welding; and tests made in the laboratory with Direct and Alternating Current"--page iii.

Rammed Earth Walls For Buildings, U.S. Department Of Agriculture

Rammed Earth Collection (1923 - 1959)

Earth has been used for building dwellings from time immemorial. One method of use, superior to others, and which was known to the Romans has been preserved by tradition .t o modern times. This method consists of ramming slightly moist, specially selected earth, without the addition of straw or other material, between movable forms, and is known by itsFrench name, " pise de terre," which means "rammed earth." Pise de terre is a reliable building material when properly handled and is admirably adapted to structures on farms distant from transport routes. Little information has been published on rammed earth in …

The Movement Of Ground Water And Its Relation To The Drainage Of Irrigated Lands, Ernest O. Larson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

One needs but to review the history of the irrigated projects of the West to see clearly the importance of drainage. Since the passing of the Reclamation Act in 1902, the construction of drainage work by the United States Reclamation Service on seventeen projects located in thirteen western states represents about 12 percent of the expenditures from the Reclamation Fund. The portion for drainage has been spent during the last few years. This work has required an annual expenditure of about $1,000,000 or a total of $8,000,000 to July, 1922⁽¹⁾. The work completed is estimated to have reclaimed …

Design Of High Tension Outdoor Substation, Joseph Worley

Bachelors Theses

"The present day tendency appears to be toward the more frequent use of outdoor substations, where not only the section disconnecting switches, but also transformers, lightning arresters, and indeed all high tension equipment, are exposed to the weather. The control of local feeder circuits at the lower pressures would be by means of switch-panels in cheaply constructed houses erected near the transformers"--Introduction, page 3.

Boiler Feed Water Purification At The Gorge Power Plant, Akron, Ohio, Bernerd William Adams

Professional Degree Theses

"The conditions of operation at the Gorge Power Plant were such that raw water was used in all the boilers. The boilers were operated at an average of about one-hundred and seventy-five percent rating and considerable scale formed in the tubes of the boilers. It was evident that this caused a large loss in fuel and increased the expense of maintenance. It was necessary to employ a number of men to remove the scale. An investigation was made to determine as nearly as possible the loss caused by the use of impure water. After the investigation, an attempt was made …

The Copper Deposits Of Shannon County, Missouri, John Hyer Bowles, Lewis Ely Davidson

Masters Theses

"The object of this report has been three-fold. First, it has been deemed necessary to discuss the general geology of the area about Eminence, showing the distribution and character of the different formations. The distribution is shown on a topographic map of the Eminence Quadrangle...In the second place, it is intended to give a detailed account of the history, development, and extent of mining operations in Shannon county, with the amounts of production and the occurrence of the ore. The third object of this report is to develop a probable theory for the genesis of the ore, and to discuss …

The Mexican Oil Fields, Raul Chavez

Professional Degree Theses

"Owing to the large area involved in this paper it is proposed to give only briefly the history, geology and development of the oil industry in Mexico, as well as to discuss in a general way the present oil legislation which has brought so much comment in the papers and has raised to much diplomatic trouble between the Mexican and United States Governments. This discussion is therefore of a brief nature and only the most culminant features and details of the subject in mind are here treated. The information and data here given were accumulated during personal examination of the …

Furfural (Furfuraldehyde) And Some Of Its Derivatives, Marion Smith Badollet

Masters Theses

"In the spring of 1919 the Eastman Kodak laboratories suggested to the chemistry department of the Missouri School of Mines and Metallurgy that experiments on small-scale production of furfural be undertaken. After a series of experiments a small amount of this product was made and a report was given before the American chemical Society at St. Louis in April 1920. The furfural prepared at the Missouri School of Mines and Metallurgy was sold to the Eastman Kodak laboratories. Within recent years very little experimental work has been done on furfural. It commands a high price as only small amounts are …

The Factors Influencing The Price Of Metals On The Metal Market, Thomas Patrick F. Walsh

Masters Theses

"Every year the various engineering and industrial magazines print curves showing the rise and fall of metal stocks throughout the year. to the ordinary reader, these curves are seldom intelligible; he sees the ups and downs; he knows that the prices have risen and fallen; but he rarely knows what causes these changes -- and the curves themselves never tell. This paper tries to remedy this defect; it draws its curves, and, in the light of historical events, which it recounts, tries to determine the causes for the fluctuations in the market. it further places these factors on the curve …

Mining, Concentration And Refining Of American Flake Graphite By The Griesemer Graphite Company, Joseph C. Barton

Professional Degree Theses

"The Griesemer Graphite Company was incorporated June 3, 1916, under the laws of Alabama, for the purpose of mining, milling and refining of flake graphite...Owing to strong competition in the graphite game, it will be impossible to give many interesting facts and figures in this thesis. The screen analysis worked for after each operation is carefully watched and the preparing of the ore, as well as the sizing of the flake, is one of the most important features in the production of flake graphite, especially that grade required by the crucible makers and the lubricating manufacturers. The carbon content is …

Father Of Test Law Explains It, Nebraska Tractor Test Lab

Nebraska Tractor Tests

Nebraska State Representative Wilmot F. Crozier of Osceola, Nebraska, who fathered and pushed the tractor bill through the Nebraska State Legislature. On September 19th, 1919, he tells why he formulated the law and his story to Implement & Trade Journal.

Underground Haulage, T. Roderick Noon

Bachelors’ Theses

The object of this discussion is to determine which would be the most economical and efficient of two forms of haulage, namely, mule and storage battery locomotive, based upon an output of four hundred and fifty tons of cleancoal per day, of eight hours.

Land Drainage In Central Iowa, Ernst Lorenze Chamberlain

Professional Degree Theses

"The problems encountered in land drainage are comparatively simple when seen from an engineering point of view. Most problems do not require a fine scientific or mathematical analysis but are rather questions to be decided by good judgment or practical common sense. The most difficult problems encountered are financial, legal and political, therefore, in this paper considerable attention is paid to the Iowa drainage law, facts learned from practical drainage men and to the organization and operation of the different financing systems for drainage"--page 1.

The Effect Of Temperature Upon The Crystal Size And Physical Properties Of Iron And Steel, Earl Joesting Mcnely

Bachelors Theses

"This investigation was deemed of sufficient merit to require the work of two terms. It naturally is divided into two parts, i.e., the effect that temperature has upon the crystal size; and the effect that temperature has upon the physical properties of iron and steel"--page 3.

The Relation Of The Composition Of Petroleum To Its Origin And Occurrence, John Warder Shotwell

Bachelors Theses

"Petroleum Is a mixture of hydrocarbons. It is a liquid varying from colorless, through yellow and brown to black. It varies from 1.0 to 0.80 in specific gravity, which corresponds to 10° to 45° Beaume. It varies widely in physical properties, such as viscosity, ignition point, polarization of light, etc. Chemically it is composed essentially of carbon and hydrogen, but usually contains impurities such as sulphur and nitrogen. The carbon and hydrogen combine with each other to form certain series, or "chains"--Chemical and Physical Nature, page 1.

Municipal Highway Design, Karl C. Schmidt

Undergraduate Theses and Senior Projects

No abstract provided.

Two Lincoln (Nebraska) Typhoid Fever Epidemics Of 1911 And 1912., Herbert H. Waite

School of Biological Sciences: Faculty Publications

On August 29, 1912, I was requested by the Board of Health of the city of Lincoln to make an investigation to determine if possible the origin and cause of an outbreak of a disease reported as typhoid fever which was then prevailing. This outbreak was said to be most prevalent in one particular portion of the city and consequently attention was turned to that portion. Of the cases reported an investigation was made of over 60 individuals and after considering all the probable causes for the majority of those affected the conclusion was reached that all could be logically …

The Measurement Of Compressed Air And Its Consumption In Rock Drills, Homer Kent Sherry, William Porri

Bachelors Theses

"The object of this thesis is to investigate the measurement of compressed air and to determine its consumption in rock drills. Our intention at first was to run more exhaustive tests on the drills, but due to the large amount of work necessary in rigging up the apparatus and computing results, we found it necessary to curtail our work to representative types of the hammer and the piston machines. We regret being unable to give more complete data in regard to the drills, but hope to point out fields for future work since, with the increased facilities now at hand, …

Roasting Pyrite For Magnetism With Minimum Sulphur Volatilization, Dale Irwin Hayes, Clark Watson Wright

Bachelors Theses

"In Wisconsin and other zinc mining districts the blende is frequently found associated with pyrite and marcasite. In the Wisconsin district, especially, the marcasite content of the mine-run ore is high being frequently equal to and in many cases greater than the sphalerite content. At time the marcasite and sphalerite together constitute as much as 25 or 30% of the min-run ore. The characteristic milling treatment of this ore is; first, hand-picking, and then over grizzlies, tromells, rougher and cleaner jigs. Owing to the fact that marcasite and sphalerite differ but slightly in specific gravity the jig concentrate obtained is …

Crystallization Of Magmas, Norman L. Ohnsorg

Bachelors Theses

"The object of this paper is to arrive at a better explanation of the segregation of magmatic solutions on cooling. In which magmas will be discussed from a chemical and metallurgical lien of reasoning, in showing why such minerals as apatite, magnetite, etc., having a comparatively low melting point, crystallize cut before feldspar and quartz, which have a comparatively high fusion point"--page 1.

Fluorspar Mining In Kentucky, Walter Coffran Richards

Professional Degree Theses

"The mining of fluorite, or fluorspar in Western Kentucky is one of the chief mineral industries of that State. As the number of mines and prospects is very great, a thorough treatise on the geology, mines, and methods of this district would make a large volume. This thesis will deal, however, with only a small part of the district, in which the mine operated by the author is located. Before going into detail, it might be well to mention a few points relative to the fluorspar industry in general. To the average person, fluorspar seems to be unknown. In fact, …

The Development Of The Minneapolis Sewer System, Andrew Rinker

Journal of the Minnesota Academy of Science

No abstract provided.