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A Study Of Methods For Separating The Elements That Interfere In The Electrolytic Deposition Of Lead As Lead Oxide, John Shaw Sabine

Masters Theses

"The electrolytic determination of lead as lead dioxide is a very desirable method, due to its simplicity, accuracy, and the small amount of the analyst's time required. The electrolytic method functions when both large and small amounts of lead are present. The method depends upon the fact that from a nitric acid solution the lead is plated upon the anode as lead dioxide; from the lead dioxide deposit the percentage of lead may be calculated.

An electrolytic method, for determining the lead in samples containing from 5 to 150 mg. of lead, was described in a paper by Schrenk and …

A Dictionary Of Mathematical Terms For High School Students, Matilda O. Iverson

University of the Pacific Theses and Dissertations

In compiling and writing this dictionary the needs of the high school student and teacher interested in mathematics have been kept constantly in mind. The mathematics of the high school is perhaps the simplest of its kind and yet very few textbooks carefully define all technical terms as they are introduced. The thoughtful student may turn to an abridged or unabridged dictionary but will find in most cases that the definitions of the terms are vague, often misleading, and in some cases not given.

The words in the vocabulary have been arranged in alphabetical order so that the reference to …

A Study Of The Acoustics Of Some Stockton Auditoriums And Rooms, Glen Halik

University of the Pacific Theses and Dissertations

Though the original purpose of this thesis was to investigate the cause for criticisms of the acoustical properties of the College Auditorium, it has been enlarged to a study of other Stockton Auditoriums and rooms with the idea of securing a technique of acoustical analysis similar to that of acoustical engineers in the industries. It was planned at first to set up an oscillator and reverberation meter, but it was found that the apparatus expense would be quite prohibitive. This research was therefore confined to noise meter measurements and reverberation calculations, and includes much of architectural and engineering branches. However, …

The Monadnock Volume 7, Number 1, December 1932, Clark University Geographical Society

The Monadnock (Clark Geographical Society)

Volume 7, Issue 1 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).

Tungsten Plating, Allen J. Hipp

Bachelors’ Theses

During the past twenty years electro-plating has undergone a thorough transformation from an art into a science in which physical chemistry is playing an important role. The factors which govern the plating of copper, nickel and brass are well known. Recently new processes have been found for the plating of cadmium and chromium. Metals which give a bright surface and which will take a polish are in great demand. Nickel and chromium answer these requirements, and are used commercially for a variety of uses. Chromium has been a remarkable success as a plated surface because it is both a beautiful, …

On The Trigonometric Developments Of Certain Doubly Periodic Functions Of The Second Kind, M. A. Basoco

Department of Mathematics: Faculty Publications

The class of meromorphic functions which satisfy periodicity relations of the form (1) ƒ(z + 2ω_l) = c₁f(z), f(z + 2ω₂) = c₂f{z), where the multipliers c₁ and c₂ are independent of z, and ω_l/ω₂ is a complex number with non-vanishing imaginary part, has been named by Hermite doubly periodic of the second kind. It is possible to make the study of these functions depend on others of the same type, but such that one of the multipliers, say c_l, is unity. In what follows …

The Reaction Between Aluminum And A Germicidal Soap Contaiming Mercuric Iodide, Gordon C. Mueller

Bachelors’ Theses

The verification of previous research concerning the action of mercuric halides on aluminum, together with a study of the action of soaps containing these halides, is the purpose and privilege of this paper.

A Study Of The Deposition Of Wax In A Wax Emulsion By Electricity, Howard Mcdonald

Bachelors’ Theses

The basis of this thesis resides in an experiment performed by Dr. J.R. Koch of Marquette University during the summer of 1931. Dr. Koch poured some liquid emulsion into an "H" tube and attached the electrodes to a source of DC current. A few days later he noticed the wax bad separated from the emulsion and had passed to the positive electrode leaving the solution surrounding the negative electrode clear.

Problem-Solving In Arithmetic, Eva M. Acker

Bachelors’ Theses

For a century arithmetic has been a popular subject in the elementary schools, and has consumed more time than any other subject. The war had an effect in reducing this time on arithmetic, largely due to the war-time emphasis on health, food production, back-of-the-line morale, and kindred subjects. More recently, school activities and playground work have come in for a reasonable share of the school time. The Twenty-ninth Yearbook recognizes the child as the center of interest, and the final criterion of all values being the effect any technique of teaching or any content of instruction has on the child. …

The Recovery Of Copper In Sulphide Ores By Roasting, Leaching, And Electrolysis, Jack S. Greenough

Bachelors Theses and Reports, 1928 - 1970

Sulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions, but a very high extraction can be obtained if the copper ore is in the oxidized condition. The problem is to convert the sulphide into the oxide form. This can be done by giving the sulphide ore an oxidizing-sulphatizing roast. Copper sulphate is soluble in water, so acid will be saved in the leaching process if copper sulphate is present. The iron in the copper sulphide ores is present as pyrite, or in combinations as bornite, or chalcopyrite.

Some Notes On The Composition Of "Copper Pitch", Richard R. Matthew

Bachelors Theses and Reports, 1928 - 1970

A supply of so-called "copper pitch" ore was received by the Montana Bureau of Mines and Geology in response to a request by them from a resident of Kalispell, who had previously sent a specimen to the Bureau for a mineralogical analysis.

Since this material was little known and had apparently received but little study under a reflec­ting microscope, it was thought that such a study might throw some light on the mineralogical and chemical composition of the material.

The Aplitic Body Bordering Roosevelt Drive South Of Butte, Montana, Edward B. Trueworthy Jr.

Bachelors Theses and Reports, 1928 - 1970

The area studied consists of a large body of aplite situated 12 miles south of Butte. It extends eastward almost to the Butte-Pipestone road, southward to Lime Kiln Hill and westward a distance of 3000 feet.

The petrographic work was supplemented by a map of the area. Special attention was given to those frequent "Limonite Specks" found in the aplite.

Joint Planes In The Rhyolites Of The Butte District, Montana, John B. Hopkins

Bachelors Theses and Reports, 1928 - 1970

The problem herein discussed deals with the pointing planes found in the area of rhyolite located in the northwestern portion of the Butte District. The question to be determined was whether or not the pointing planes in the rhyolites could be class­ified with the Butte Ore fissure systems.

A Bentonite Deposit Near Warm Springs, Montana, R. H. Larson

Bachelors Theses and Reports, 1928 - 1970

This report deals with a bentonite deposit recently developed, approximately seven miles northeast of Warm Springs, Montana. A group of claims have been staked on the deposit and are owned by the Lincoln Mining Company of Anaconda, Montana. The company also has several claims prospected for silver one mile from its present site of operations, but the silver prospects have failed to produce. The bentonite deposit was discovered incidentally during the course of other development work, and at present two adits have been driven into the side of a mountain, each crosscutting a vein-like mass of bentonite varying from two …

The Monadnock Volume 6, Number 2, June 1932, Clark University Geographical Society

The Monadnock (Clark Geographical Society)

Volume 6, Issue 2 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).

Arithmetical Progressions, Frances Agnes Scherkenbach

Bachelors’ Theses

Of the origin and the methods of treatment very little is known. The arithmetic and geometric progression first attracted attention after the Greeks had brought into prominence the harmonic series. The term ’series’ is derived from the Greek, while the term’ progression’ is derived from the Latin. The latter term was used most prominently until the seventeenth century, during which period the writers seemed to prefer the term "series" which is now mosy [sic] generally used.

The Quantitative Estimation Of Solvents And Non-Solvents As Found In Lacquer Preparations, Harry Katzowsky

Bachelors’ Theses

The study of solvents and non-solvents in lacquers entails a great deal of work which is unable to be covered in so small a space of time, and although this thesis attempts to understand the use of these solvents and non-solvents, it is just a mere uncovering of much more interesting work able to be done with further analysis in this field.

The Rate Of Precipitation Of Copper Aluminide In The Silver Rich Silver-Copper-Aluminum Alloys, Thomas Finley Mcbride

Bachelors Theses and Reports, 1928 - 1970

In order to determine the best annealing temperature at which to age-harden the alloys, hardness tests on speci­men annealed for different lengths of time at different temperatures were made.

The Effect Of Hydrogen Overvoltage On The Electrolytic Deposition Of Zinc, John M. Munzenrider, Kenneth O. Sweeney

Bachelors Theses and Reports, 1928 - 1970

In the deposition of metallic zinc by electro­lysis from neutral or acid solution, little difficulty is experienced provided certain impurities are absent from the electrolyte. The use of the process has long been considered as a potential source, patents on the process having been issued as early as 1880. However, the early experimenters failed to realize the importance of impurities in the electrolyte, and for this reason, the process suffered several severe setbacks when commercial plants were built.

The Electrolytic Deposition Of Chromium Upon Aluminum, E. Fults, L. D. Voerge

Bachelors Theses and Reports, 1928 - 1970

The purpose or this investigation is primarily to determine the best conditions for plating chromium on aluminum. The work was carried out with the hope of obtaining coherent deposits, and of determin­ing the conditions under which such deposits may be duplicated.

A Study Of Methods For Determining The Solvents And Diluents Used In Lacquers, William O'Donnell

Bachelors’ Theses

The subject matter of this thesis deals with methods of analysis for lacquer solvents and diluents. Lacquers are a comparatively new product and a big field of investigation is open to anyone. This subject as taken bee use it offered a special appeal to be able to investigate something that was new and practical.

The Problem Of The Trisection Of The Angle, Ruth O'Brien

Bachelors’ Theses

The great problem of the trisection of the angle dates back to the rise of the Sophist School about 480 B.C. The Sophist School was one of six Greek mathematical schools which included the Iconic, Pythagorean, Platonic, First Alexandrian and Second Alexandrian Schools. The periods of their existence overlapped considerably. thus, for example, Pythagorean activity continued during the time of the Sophists until the opening of the Platonic School. The rise of the Sophists to prominence came as a result of certain social and political conditions of the time.

The History Of The Parallel Postulate And Non-Euclidean Geometry, Clare Switalski

Bachelors’ Theses

After approximately two thousand years mathematicians have ventured to dispute the geometry of Euclid. Euclid's axioms were regarded as indisputable laws of space, the sole source from which his theorems were deduced. One needs only to survey the history of the controversies concerning his parallel postulate to be convinced that his assumptions are only metaphysical, since these assumptions can be changed when a space different from Euclid's is considered.

The Decomposition Of Mixed Ethers And A Quantitative Scheme For The Determination Of A Quaternary Mixture Of Alcohols And Iodides, Ellsworth H. Stock

Bachelors’ Theses

To introduce some recent advances covering the decomposition of mixed ethers and the quantitative scheme for quaternary mixtures of alcohols and iodides is the privilege and responsibility of this paper. The first part of the paper deals with the oxidation, and quantitative determination of binary mixtures of alcohols. The last half covers the separation of the alcohols from the iodides, the decomposition of the mixed ethers, and the complete outline for determining the amount of alcohols resulting from the decomposition. Tables, graphs, and drawings have been included in the text, because the complete understanding of the method depends to some …

An Investigation Of Methods Used In Mine Analysis Of Iron Ores From The Nashwauk, Minnesota District, Walter F. Joyce

Bachelors’ Theses

In the mining industry like in any other industry the products of the mines and the raw materials are constantly analyzed. Three different analyses are made, on crude ore, on the concentrates and on the cargo. Highest permissible error is allowed on crude ore and mine samples.

The Development Of A Quantitative Scheme For The Separation Of Quaternary Mixtures Of Alkyl Halides And Alcohols, Edward Joseph Pfeifer

Bachelors’ Theses

Organic chemistry offers a large field for quantitative investigation. The nature of many organic compounds makes for difficult analysis. The separation of simple mixtures is oftentimes a problem. The work undertaken in this thesis is of special interest because it combines several phases of chemistry, in the investigation of a problem, which by its very existence, suggests the need for solution.

The Electrodeposition Of Chromium And Iron Alloy, Duane J. Windau

Bachelors’ Theses

The plating of stainless steel, or more correctly, the plating of iron chromium alloys is among the recent projects undertaken by the steel industry to improve its products. Publications on this industrial endeavor are few, although undoubtedly there is considerable work going on. The reason for the sudden interest in stainless steel may be traced to the interesting and valuable properties of chromium steels and especially the stainless steels. However, articles made entirely of stainless steel are expensive and therefore cheaper substitutes have been considered, names the plating of a base metal with chrom-iron alloys. This project will be of …

Photometry, Arthur G. Barkow

Bachelors’ Theses

The preparation of this paper was not undertaken primarily with a view of discussing all types of photometer, but mostly for the investigation of the Ritchie Wedge. As for the first part, the history or resume is brief and somewhat incomplete. In the ensuing pages, no reference is given to the portable photometer, so helpful to illuminating engineers. This was not deemed necessary since the principle involved is similar to those discussed.

Throwing Power Of A Chromium Plating Bath Containing Hydrofluoric Acid Instead Of Sulfphuric Acid, Clarence E. Barta

Bachelors’ Theses

Chromium was discovered in 1797 by a Frence Chemist named Vauquelin who gave it its name from a Greek word for color because of its variety of colors which its various compounds show. The electrode-deposition of Chromium from a Chromium acid solution has been an accomplished feature for the past century but it has only been in the past few years that the mechanism of the process has been sufficiently understood to permit its commercial application.

Harding and Barrows state that it is possible to ob­tain satisfactory Chromium deposits from Chromic acid baths containing compounds other than sulfuric acid which …

A Study Of The Inhibiting Value Of Various Separators On The Plating Of Lead, Lawrence E. Ehrnst

Bachelors’ Theses

This thesis was suggested by the work of Mr. B. J. Pozorski and Mr. W. Adashek. Mr. Pozorski investigated the inhibiting qualities of various separators when placed between two platinum electrodes in a copper sulfate solution. Mr. Adashek worked on the efficiency of various lead plating solutions using lead electrodes and electrlyes containing soluble lead salts. Combining the work of these men, the author is investigating the prohibitive plating properties of various separator using a lead plating solution. By so doing, the investigation has a closer relationship to the actual performance of the storage battery .