Physical Sciences and Mathematics Commons^™

Drying Of Solids : I. Prussian Blue., Orville K. Schmied 1910-1984

Electronic Theses and Dissertations

No abstract provided.

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, …

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 …

Steric Hindrance In The Ketonic Splitting Of Substituted Acetoacetic Ester, Claude Stanley Abshier

Masters Theses

"The phenomenon of steric hindrance has been observed and investigated in a variety of reactions, most of which have been with aromatic compounds. In this branch of study the speeds of reaction of ethyl acetoacetate, α-mono-methyl-ethyl-acetoacetate, α-mono-ethyl-ethyl-acetoacetate, α-mono-propyl-ethyl-acetoacetate in the presence of 0.05 and 0.10 normal hydrochloric acids have been investigated at temperatures between 60⁰C. and 90⁰C. An attempt has been made to explain the results obtained"--Introduction, page 1.

An Investigation Of The Effect Of The Addition Of Salts On The Ph Values Of Dilute Acids, Marie Evelyn Hofmeyer Tuttle

Dissertations, Theses, and Masters Projects

No abstract provided.

Resource News-May/June 1993

Conservation and Survey Division

No abstract provided.

Resource News-November/December 1993

Conservation and Survey Division

No abstract provided.

Resource News-January/February 1993

Conservation and Survey Division

No abstract provided.

The Origin Of The Place Names Of Nebraska, J.T. Link

Conservation and Survey Division

No abstract provided.

Nautiloid Cephalopods Of The Pennsylvanian System In Mid-Continent Region, A. K. Miller, Carl O. Dunbar, G. E. Condra

Conservation and Survey Division

No abstract provided.

The Grenola Formation, G. E. Condra, C. E. Busby

Conservation and Survey Division

No abstract provided.

The Missouri Valley Traverse In Iowa North Of The Jones Point Deformation, G. E. Condra

Conservation and Survey Division

No abstract provided.

The Middle River Traverse Of Iowa, G. E. Condra, J. E. Upp

Conservation and Survey Division

No abstract provided.

The Red Oak-Stennett-Lewis Traverse Of Iowa, G. E. Condra

Conservation and Survey Division

No abstract provided.

Faunal Lists Of The Tertiary Vertebrata Of Nebraska And Adjacent Areas, H. J. Cook, M. C. Cook

Conservation and Survey Division

No abstract provided.

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 …

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 …

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, …

Molecular Organic Compounds Of Ortho And Para Aminobenzoic Acids, Weldon E. Cate

Masters Theses

The nature of the linkage between the components of molecular organic compounds is not clearly understood, although the existence of this type of compound has been known for many years. Since efforts to explain the structure of molecular compounds by the different theories of valence have met with only partial success, a series of investigations is being carried out in the Chemistry Laboratories of the University of Tennessee in an effort to formulate a theory by which the structure and properties of this interesting but perplexing type of compound may be explained.

The object of this investigation of the molecular …

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 Effect Of Certain Organic Compounds On The Time Of Set Of Silicic Acid Gels, Daniel Howell Carver

Honors Theses

When a sodium silicate solution and an acid are mixed, a gel is sooner or later formed. The spped of gelation is a variable, and it depends on a number of factors, of which there are four fundamental ones. There are as follows: (1) The concentration of water glass (2) The concentration of acid (3) Agitation (4) Temperature. In this investigation of time of set, these four elements were kept as constant as possible. There is a fifth factor of real importance. This is one that has to do with the addition of some impurity. Of course if the impurity …

Study On Gels; An Attempt To Formulate A Theory To Account For The Liesegang Phenomenon, Casimir Bieleski

Honors Theses

For some forty years the explanation of Liesegongs rings has haunted the minds of colloid chemists. From observing the formation of various insoluble precipitate in different media, numerous theories were fabricated as will be recounted in the historical portion of this thesis. All of the theories were formed from external observation only. Some investigators used supersaturation, some adsorption, and others peptization to explain the phenomena. But this was at best an inductive guess. In trying to get inside the gel to observe what went on, it was decided to use the probing electrode. With the electrode it was possible to …

A Study Of The Structure Of Silicic Acid Gels, Charles Lawrence Raymond

Honors Theses

The general purpose of this investigation was an inquiry into the structure and process of setting of Silicic acid gels. The particular object of the work was to obtain quantitative results determining whether or not the structure of the acid radical or silicate radical in the sodium silicate could be changed by allowing the sodium silicate to react with sodium hydroxide, and if so whether or not such a change in structure would effect the time of set if gel. This investigation was carried out in collaboration with other work being done at Union College on several analyzed sodium Silicates …

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 Adsorption Of Inorganic Material By Precipitated Aluminum Silicate, William Fiedler

Honors Theses

The gelatinous character of precipitated aluminum silicates suggested their possible use as adsorbents. A survey of the literature reveals many studies of the absorption of organic material by the natural clays such as Japanese acid clay, Fuller’s earth, Florida earth and kaolin. These concern special studies of these clays taken from various deposits. Many of them deal with applications of the clays to decolorizing the products of the petroleum industry. N.A. Held1 studied the absorption of the chlorides of aluminum and thorium by five different Russian clays. He found that the chloridesion is absorbed in negligible quantities, while the aluminum …

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.

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.