Physical Sciences and Mathematics Commons^™

The Application Of A Photronic Nephelometer In The Determination Of Calcium, A.M. Gross

Master's Theses

No abstract provided.

A Study Of Methods Available For The Measurement Of The Conductivity Of Electrolytes Including A New Procedure Involving Electrodeless Determinations, Clyde Aubrey Crowley

Dissertations

No abstract provided.

A Study Of The Viscosity Of Gelatines, Mary Anthony Keller

Bachelors’ Theses

Only a casual perusal of the literature treating of enzymes impresses one with the importance of the subject. How could the process of digestion be carried on without the action of enzymes? The tanning industry is primarily concerned with so-called bates, which are enzymes. Other industrial ope.rations, such as brewing, the manufacture of glue, petroleum refining, the production of rubber and starch, are likewise largely dependent on enzymatic action. Another phase of enzyme activity turns to the prevention of disease and medical diagnosis.

Substrates are of no less importance. The present work is not so much a study of -enzymatic …

The Iodine Value Of Tung Oil, M. Beto Reiss

Bachelors’ Theses

In the oil and fat industry the iodine value is one of the most important criteria in testing for the purity of the substance at hand. According to the amount of iodine absorbed fats are classified as drying, semi-drying, and non-drying oils. If the respective oil possesses and iodine value lying between 130 and 200, it is considered a drying oil; between 95 and 130, a semi-drying oil, and between 1 and 95, a non-drying oil.

The Surface Tension Of Ethylene Glycol With Various Additions, Walter W. Eichenberger

Bachelors’ Theses

Ethylene glycol is a compound of great interest both from a practical and theoretical viewpoint. In its properties it lies midway between ethyl alcohol and glycerol. Several years ago this substance was a scientific curiosity and was produced solely by laboratory methods. At that time it had little commercial value principally because of its scar• city. However, the demand for glycol steadily rose after its many useful properties had become known until today it is a very common chemical staple. Such uses as in a non-freezing dynamite, as an anti-freeze for automobile cooling systems, as a hygrosoopic agent, as a …

A Simultaneous Analysis Of Beer Foam And Rsidual Beer, Irwin Joseph Maruszewski

Bachelors’ Theses

In the past, the brewing industry was more an art than a science. Not much was known about the chemical nature of beer, or about the chemical processes and reactions that took place in its manufacture. Until recently, that is, in the last century, no interest was taken in this phase of the manufacture of beer. In the last forty or fifty years, the brewing manufacturers realized, that to have a good quality of beer, more must be known of its chemistry and therefore chemists set to work and began to specialize in this field. The thing that was most …

The Effect Of Time, Temperature, And Pressure On The Hydrogenation Of Castor Oil, Darwin F. Kaestner

Bachelors’ Theses

Although much research and investigation has been carried out during the past twenty years on t he hydrogenation of oils; only a small ·amount of this research has been devoted to the study of the hydrogenation of castor oil. In recent years much time has been devoted to the hydrogenation of those oils which yield edible fats. Castor oil, on the other hand, does not result upon hydrogenation in the formation of an edible fat, and hence, its characteristics were not fully studied. The intention of the author in doing this thesis was to obtain some data as to the …

The Construction And Efficiency Of A Packed Type Laboratory Fractionating Column, Henry Rostkowski

Bachelors’ Theses

Although simple and fractional distillation have been used commercially for many centuries, fractional distillation has been used in the laboratory only during comparatively recent years. The early laboratory fractionating columns were much less efficient than were the industrial columns. Starting about the year 1910 much work has been done in an attempt to improve the small laboratory columns. It has been the purpose of this work to build a column which combines some of the good features of columns of other workers. In addition, the column was built with the purpose of illustrating the theory of fractional distillation and thus …

The Comparative Analysis Of Iron Ore, Archie G. Sailer

Bachelors’ Theses

Our country has been fortunate in having abundant iron resources at its disposal. Their extensive development accounts for our rapid material progress and our high degree of civilization. Of all these natural resources none has contributed more to the commercial supremacy of the United States, to the prosperity of its communities and to the individual comfort of its citizens than the iron ore reserves of the Lake Superior region.

A Study Of The Organic Dye Nitrazine As An Indicator For Acid-Base Titration, Grace Nachod

Chemistry Honors Papers

This 13 page thesis examines the organic compound nitrazine as an indicator in acid - base nitrations.

Coloration Of Alkali Silicates By Carbon Arc And Sunlight, Geo. Glockler, A. R. Johansson

Journal of the Minnesota Academy of Science

No abstract provided.

Pyro-Sulfate Ion In Solution, Geo. Glockler, R. I. Meland

Journal of the Minnesota Academy of Science

No abstract provided.

The Preparation Of Organosols, Wilfrid Francis White

Master's Theses

No abstract provided.

Preparation Of Thianthrene, Eugene Alton Talley

Master's Theses

This work was begun in an attempt to study further the preparation of thianthrene from 2-dichlorobenzene and alkali sulfides. g_-Dichlorobenzene is a liquid by-product in the preparation of its solid isomer, E-dichlorobenzene, which is used extensively for controlling moths and peach tree borers. The study of the preparation of thianthrene from the liquid isomer was undertaken because the preparation might develop into a possible use for the large quantities available.

Thianthrene might be made from 2-dibromo- and 2-diiodo-benzene but these are not as cheap or as easily obtained as the dichloro derivative and were not used in this study various …

The Effects Of Certain Salts Upon The Saccharogenic Activity Of Three Typical Enzymes, George F. Gastler

Electronic Theses and Dissertations

In a previous investigation carried out in these laboratories, Moxon and Franks (1), have shown the toxicity of sodium salts of selenium, vanadium, arsenic and tellurium toward the production of carbon dioxide during yeast fermentation of glucose. The toxicity of the salts occurred in the order given. In the same investigation (1), it was shown that sodium sulfide and sodium sulfite exert an accelerating effect.

Corrosion Of Aluminum In Alkaline Solutions, George Oliver Doherty

Bachelors’ Theses

Aluminum has been an important member of the metal group since its isolation about 100 years ago. It has sprung into prominence in the commercial field and in household use in the last thirty years. The metal is light, possesses good thermal and electrical conductivity and as an alloy with other metals takes on a surprising degree of strength.

The problem of producing aluminum cheaply enough to make it practical has finally been overcome to a great extent. It now remains to be seen just what further uses there are to which this new metal may be put. Aluminum may …

The Catalytic Vapor-Phase Hydrolysis Of Benzene And Toluene, Clemens Raebel Maise

Masters Theses

"The vapor-phase synthesis of organic compounds represents a new field of study which has attracted the attention of investigators only within recent years. However, wide interest is apparent in this field and several processes of commercial importance have already been developed. Hydrolysis is perhaps the newest of all the types of vapor-phase synthesis; the literature consists of little more than a few patents...The vapor-phase hydrolysis of benzene and toluene, therefore, presented an interesting possibility. These two hydrocarbons are considered very stable toward water in the liquid-phase. The purpose of this investigation was to determine to what extent their stability toward …

The Preparation Of Glucuronic Acid From Gum Acacia, Mary Laurissa Felix

Bachelors’ Theses

Initial interest in the preparation of glucuronic acid from gum acacia was prompted by several reasons. Being interested in both the chemical and biological fields, the subject of glucuronic acid made a strong appeal. Although glucuronic acid was discovered over fifty years ago, its position in physiology remained until recently undefined. Now, however, it seems fairly certain that this compound is closely related to carbohydrate metabolism and plays an im­portant role as a detoxicating agent in the body.

The laboratory preparation of glucuronic acid is still one of the important problems of chemistry. Our present knowledge of its synthesis and …

Syntheses In The Thiophene Series, Alfred William Weitkamp

Department of Chemistry: Dissertations, Theses, and Student Research

Summary

The Friedel-Crafts reaction has been used in the preparation of thiophene ketones, some of which were hitherto unknown. Certain limitations of the reaction have been noted.

The mercuration of thiophene ketones has been systematically investigated for the first time. Many new halogen derivatives of benzothienone have been synthesized. These were employed in the elucidation of the structure of a complex mercurial· derived from this ketone.

A new modification of an old reaction has been developed whereby benzothienone can be mercurated quickly and almost quantitatively. Interesting derivatives of this little known ketone have been synthesized. Chief among these are the …

Public Water Supplies Of New Mexico, Kenneth F. Priest

Chemistry and Chemical Biology ETDs

Distribution of population in State. The estimated population for the State of New Mexico for the year 1930 was 423,300. A close observation of the population centers shows them to be scattered over a wide range of territory. The largest city, Albuquerque, has approximately 26,000 citizens. The next sites, according to the 1930 count, are three in number, Santa Fe, Roswell, and Clovis. The remaining population including rural districts do not number over eight thousand people.

A Chemical And Biological Study Of The Waters Of Elephant Butte Reservoir As Related To Fish Culture, John Greenbank

Chemistry and Chemical Biology ETDs

The investigation of fresh-water lakes with respect to fish and other aquatic life had its beginning in Europe in the latter half of the nineteenth century. Probably the only man who may be considered to be the founder of the science of limnology was F. A. Forel, of the University of Lausanne Switzerland. Professor Forel’s work was the start of a rapidly developing branch of study, not only in Europe, but also presently in North America.

Freestone County, Texas [Water Quality Survey Of Wells And Springs With Test Hole Data, 1936], Samuel F. Turner

United States Geological Survey: Water Reports and Publications

Introduction

The purpose of this survey was to obtain information concerning existing wells and springs and the quantity and quality of water they yield, and to put down test holes where additional information was needed.

This project was part of a statewide Works Progress Administration project known as a "Statewide Inventory of Water Wells," sponsored by the [Texas] State Board of Water Engineers. The Division of Ground Water of the United States Geological Survey cooperated in the technical direction of the project and the Bureau of Industrial Chemistry of the University of Texas furnished laboratory space and equipment and supervised …

A Study Of The Preparation Of The Combination Of Phenol-Formaldehyde Glycerol-Phthalate Resins, Mark H. Kern

Bachelors’ Theses

The author has had some experience with the commercial manufacture of paints, and it is only logical that he be interested in a problem of great importance to the manufacturer of various commercial finishes, namely, synthetic resins.

A Consideration Of The Cobalt Complexes, Jack Maloney

Chemistry Honors Papers

This 13 page thesis examines structural problems and preparation methods of complex cobalt compounds.

The Distribution Of Protein Between Beer And Foam, Robert T. Schmidt

Bachelors’ Theses

The development of the soy bean and its products is one of the foremost achievements of the modern industrial chemist. His purpose is to discover more and more applications for this useful product which is rapidly growing in popularity with the agriculture of the nation.

The Particle Size Of Emulsions Prepared With Pure And Commercial Egg Yolk, August Carl Siefert

Bachelors’ Theses

Emulsions are undoubtedly among the most useful preparations which man can make, and their application in industry, pharmacy, and cooking is wide and varied. We are all familiar with mayonnaise in which and emulsion of olive oil is obtained with the use of egg yolk as an emulsifying agent. Egg yolk itself is one of Nature's very best emulsions, as is milk which is both a colloid and an emulsion.

This thesis is concerned in particular with the application of emulsions in the tanning industry, where oil is applied to leather in the form of an emulsion to make it …

A Study Of The Gelation Of Several Paraffins In Various Solutions, Joseph John Wocasek

Bachelors’ Theses

In the selection of various waxes for commercial use, it has long been the custom to depend solely upon melting-point for property determination. Thus, for example, all paraffin waxes which had a melting range between 50 and 65 degrees centigrade, were thought to have much the same properties and that any or the commercial paraffins of this range would therefore impart the same characteristics to the product in which they were to be used. But with increased use, these waxes have come under more careful observation and experimentation. Very little data has as yet been released for publication but already …

The Effect Of Calcium And Ammonium Salts On Enzyme Action, Erwin F. Karow

Bachelors’ Theses

The object of this thesis is to study the effect of various ammonium and calcium salts upon the digestive action of trypsin, pancreatin and papain. A perusal of the literature reveals only a small amount of information upon the subject.

Nickel And Its Determination, Robert Fitzpatrick

Bachelors’ Theses

I have found great pleasure in writing this thesis on Nickel and wish to express my appreciation for the assis­tance received from various sources. The thesis itself contains a brief history of the metal followed by an experi­mental determination of the nickel content of some commer­cial steels. These were kindly furnished by the analytical department of the International Harvester Company to whom I am grateful.

For the history of nickel I am especially indebted to the account by Robert c. Stanley, President of the Inter­national Nickel Company, reproduced in Wilhelm's, The Book of Metals.

For the material on the …

A Comparison Between The Percent Of Maltose Sugar In The Malt Wort And The Characteristics Of The Malt, William Black

Bachelors’ Theses

Interest in this problem was brought about through working with malt in a malting laboratory. The curiosity of the author prompted research along the lines herein explained and a correlation between the amount of maltose in a malt wort and other variable factors explained in the following chapters was sought.

There has been a great deal of work done in the malting field which adapts itself readily to organic research. The chemistry of malt and malt products has arrived at a state where regular standard analysis can be applied. However, the research possibilities are practically unlimited and this work done …