Physical Sciences and Mathematics Commons^™

An Apparatus For Molecular Weight Determinations, Philip A. Lefrancois

Master's Theses

No abstract provided.

An Experimental Study Of The Equilibrium Diagrams Of Two Binary Systems: Benzene-Anisole And Benzene-Benzyl Alcohol, Otto Joseph Richiardi

Master's Theses

No abstract provided.

An Experimental Study Of The Equilibrium Diagrams Of Two Binary Systems: Acetic Acid-Water And Glycolic Acid-Water, Lucille Mary Trudeau

Master's Theses

No abstract provided.

A Study Of The Equilibrium Diagrams Of The Systems, Benzene-Toluene And Benzene-Ethylbenzene, John B. Mullen

Master's Theses

No abstract provided.

An Experimental Study Of Equilibrium Diagrams Of The Systems: Benzene-Chlorbenzene And Benzene-Fluorobenzene, John C. Tomunak

Master's Theses

No abstract provided.

Fermentation Of Sugar Acids By Bacteria, Gordon B. Robbins, Keith H. Lewis

Department of Chemistry: Faculty Publications

Bacterial fermentation of the sugar acids has received little attention in comparison with the wide-spread use of the common aldoses and sugar alcohols. These acids, and especially their sodium salts, are well suited to bacteriological techniques because of their solubility and heat stability, yet their usefulness for investigating the relationship of chemical structure to biological utilization has only recently been recognized. Their application to systematic differentiation of bacteria has also been neglected.

Kendall, Bly and Haner (1923) concluded from a study of three monocarboxylic acids and three dicarboxylic acids that these compounds possessed little value for the differentiation of bacterial …

A Study Of The Proteolytic Activity Of The Enzyme Papain On Various Brands Of Gelatine, Mary Christella Zeszuto

Bachelors’ Theses

The measurement of the ·viscosity of liquids by means of capillary tubes has been carried on for more than a hundred years. It was not, however, until 1846 that the results of Poiseuille's research were given to the public. For the comprehensive study he made of the problem, the concept of the laws controlling viscometry flow is attributed to him. The study of the same problem. was continued by many others in subsequent years. Their results, in general, verify the principles given by Poiseuille, but corrections attributed to conditions other than viscous flow have been suggested. These involve drainage, liquid …

A Method For Comparing And Measuring The Drying Time Of Glues, William C. Strutz

Bachelors’ Theses

The measurements or quality in glue testing are arbitrary and are of value only when compared to a standard glue or when comparing one glue to another. Glues have been used for hundreds of years, but it has been only in the last forty or fifty years that any scientific investigations of any consequence have been made. Prior to this time glues were made by rule of thumb by practical men who learned the art of glue making from other practical men in the business and by contact with the industry. "When the United States entered the Great War and …

Copper Chromium Oxide As A Catalyst In The Hydrogenation Of Castor Oil, Mary Sebaldus Rueger

Bachelors’ Theses

Catalysts are essential to most hydrogenation reactions. Very few hydrogenations occur in the absence of some sort of catalyst. Thus, the earlier work of Bergius on coal hydrogenation was non-catalytic, but more recently the process has become practically entirely catalytic thru the development of the I. G. Farbenindustrie in Germany.

A Comparative Study Of The Proteolytic Activity Of Trypsin On Various Gelatins, Louis Hinkle Coggs

Bachelors’ Theses

Since 1839, the viscosity of liquids has been measured by means of capillary tubes. However, it was not until the year 1846, that the results of Poiaeu1lle's research were :made known to the public. Because of the comprehensiveness of Poiseuille's work, the concept of the laws controlling viscometry flow is attributed to him. For one hundred rears the subject of viscometry has been studied by many. During these years the principle a propounded by Poiseuille have been verified in general, but various corrections and modifications of viscometers in regard to drainage, surface tension, liquid head, and kinetic energy have been …

The Bursting Strength Of Ethylcellulose Films In Various Organic Solvents, James B. Miller

Bachelors’ Theses

Since the discovery of celluloid by Hyatt, industry has appreciated the inherent toughness of compositions containing cellulose derivatives.

Ethylcellulose, one of the newest of these derivatives, has been widely used and investigated in the last few years because or its extraordinary properties which are unavailable in any other single cellulose derivative.

Electro-Dialysis Of Gum Arabic By Means Of A Continuous Flow Apparatus, Jerome J. Kowalski

Bachelors’ Theses

This work was performed with the intention of devising a method for the electro-dialytlc separation of electrolytes and colloids which provides for the continuous flow of sol and dialysate during the process.

The facts which were instrumental in directing the author's attention to this problem are: (1) The lack of a simple and efficient apparatus for electrodialysis, and (2) the wide range of possibilities for the application of such a device.

A Study Of The Distillation Of Various Binary Mixtures, John Schneller

Bachelors’ Theses

The work attempted interested the author for several various reasons, (1) there seemed to be a lack of published information in the various liquids studied, (2) there was great interest on a checkup of the apparatus used, (3) to see which mixtures will give minimum and which maximum curves of boiling points.

The Determination, Analysis, Or Assay Of Sodium Nitrite, William Ellenbogen

Chemistry Honors Papers

This five page thesis examines the determination of sodium nitrite through volumetric and gravimetric analyses.

Qualitative Analysis Of Silver, Lead, Mercury, Copper, Bismuth And Cadmium By Means Of Spot Tests, Jerome S. Szymanski

Bachelors’ Theses

For years the analytical chemist avoided the use of organic chemicals in his work. Some of them he accepted as a matter of course, without paying much attention to their value. Chloroform was used as a solvent in testing for bromine and iodine. A few indicators were used, but organic chemicals were only sparingly used in analytical work. The beginning of the twentieth century marked the introduction of the use of organic dyes in analytical work. Since then, their use has grown steadily, especially during the past decade due to the work of Drs. Feigl and Pregl.

Some of the …

Electrolytic Preparation Of Glucuronic Acid From Glucose, Thomas Mcguine

Bachelors’ Theses

The present work was undertaken to check the results of Dr. R.A. Leutgoeb in the electrolytic preparation and also to further the separation of glucuronic acid from the electrolyte.

Because up to 1938 no efficient chemical method of glucuronic acid had been developed. Dr. Leutgoeb undertook to remedy this lack by making use of electrolysis for a preparation from alpha methyl-glucoside. Such a chemical method is needed if biochemists wish to successfully continue work on the metabolism and deoxioating functions of glucuronic acid. Biological means indeed produce glucuronic acid but in low yields and after much time and labor. Hence …

The Purification Of Linolenic Acid Of Linseed Oil Fatty Acids By Fractional Crystallization From Acetone, Sylvester Ralph Taterzynski

Bachelors’ Theses

Recently the fat and oil chemists are concerning themselves with a more thorough analysis of the fats and oils. In former years chemists in this field seemed to be satisfied with a relatively superficial analysis, used especially in detecting adulteration of oils.

This lack of detailed- analysis was, in great part, due to the fact -that there was no good methods of separation and analysis and especially of the higher unsaturated fatty acids. Only generalizations and approximate calculations were made. However, in the past few years, a decided step has been made toward a far more detailed investigation of the …

Viscosity Of Ethyl Cellulose In Various Binary Mixtures, Frank L. Tinetti

Bachelors’ Theses

Viscosity is that property of a fluid by which it resists continuous deformation, especially characteristic of thick liquids. It is also variously defined as the resistance experienced by one portion of a liquid in moving over another portion, or the "internal friction" of the liquid. This property is the reciprocal of "fluidity", which is the measure of the tendency of a liquid to flow.

A Preparation And Testing Of Bromo Acid, Joseph M. Jauquet

Bachelors’ Theses

The study of dyes in relation to the cosmetic industry is of very great theoretical and practical interest. The development of the Dye Bromo Acid-G and the products which are produced from it are of foremost achievement in the field of modern industrial chemistry.

The Solubility Of Anthracene And Phenanthrene In Various Solvents As A Function Of Temperature, R. O. Sutherland, A. J. Miller

Journal of the Minnesota Academy of Science

No abstract provided.

The Pressing Need Of A Practical Non-Technical Course In High School Chemistry, P. M. Glasoe

Journal of the Minnesota Academy of Science

No abstract provided.

The Kolbe Synthesis With Alkyl Ortho-Xenols, Sidney Harris

Master's Theses

The phenol series of compounds has shown marked therapeutic activity. Generally there are two types phenols used as germicides and fungicides - (a) the very soluble type such as the resorcinols and ( b) the less soluble type such as the phenyl phenols and salicylic acid and its derivatives.

Condensation Of Olefins With P-Mercapto-Diphenyl, Raymond Michael Abrams

Master's Theses

Markownikow's rule states that in the addition to unsaturated ,negative groups add to the carbon atom having the least number of Hydrogen atoms. It has been observed that mercaptans and hydrogen sulfide add to olefine contrary to Markownikow's rule in the presence of sodium alcoholates or sulfuric acid.

The Adsorption Of Hydrogen Ion Upon Arsenic Trisulfide Hydrosols Preceding Coagulation, Myron L. Corrin

Bachelors’ Theses

Since the recognition of the colloidal state by Graham in 1861, the importance of colloidal systems in both pure and applied science has received increasing recognition. Many industrial processes are colloidal in nature; the chemistry of living matter is essentially colloidal chemistry; analytical chemistry involves the recognition and removal of matter in the colloidal state. As a result of the many applications of this branch of chemistry, the mechanisms underlying typical processes of colloidal systems are of vital significance. Specifically, the destruction of colloidal systems by electrolytes, finding as it does such wide use, is of considerable importance. In the …

The Lime Content Of Rocks Of The Upper Cretaceous System Of Osborne County, Kansas, Herman D. Search

Master's Theses or Doctor of Nursing Practice

This report is the result of several weeks of intensive study and investigation in the field and in the laboratory. In making this study of the rocks of Osborne County, Kansas, the writer is concerned chiefly with the chemistry of the rooks rather than with their geological formation. He has not attempted to make a complete analysis of the rocks, but has limited his investigation in order to determine certain facts concerning their line content. He has attempted to determine the consistency of the percentage of lime in a given member in various parts of the county and also of …

The Refractive Indices Of Ethyl Alcohol And Water Mixtures, Janina Nowakowska

Master's Theses

No abstract provided.

Oxidation Potentials Of Ferric Ammonium Citrate., Daniel P. Knopf 1916-1991

Electronic Theses and Dissertations

No abstract provided.

The Reactions Of Acid Halides With Sodium, Magnesium, Zinc And Amalgams, William H. Webb

Masters Theses

"The reactions of acid halides with metals are of interest because there seems to be a possibility of abstracting the halogens from two molecules of the halide, and thereby bringing about a coupling reaction; or the formation of an intermediate organo-metallic compound which would react with another molecule of the acid halide. The result of these reactions should be the formation of diacetyl and acetyl chloride and of dibenzoyl or benzil from benzoyl chloride. This procedure would be far better than the usual procedures for the preparation of these compounds...The results reported in the literature by different workers, on the …

Chemical Substitutes., Clarence Elmore Parks 1909-1987

Electronic Theses and Dissertations

No abstract provided.

The Fixation Of Active Nitrogen By Organic Compounds, F. Russell Koppa

Master's Theses

No abstract provided.