Digital Commons Network^™

Diffusion Through A Membrane, Marvin E. Wyman

Journal of the Minnesota Academy of Science

No abstract provided.

The Kinetics Of The Exchange Between Sn(Ii) And Sn(Iv) In Absolute Alcohol, E. Gerald Meyer

Chemistry and Chemical Biology ETDs

The radiochemical exchange reaction may in general be written AX+BX^• = +BX where X^• represents a radioactive atom of X. The species AX and AX^• are assumed to be chemically identical as are the species BX and BX^•. This assumption introduces no appreciable error even when working with atoms having an atomic weight as low as fourteen.

Some Reactions Of 4-Chlorocinnoline, F. H. Kruse

Chemistry and Chemical Biology ETDs

This problem involves the preparation of 4-chlorocinnoline by the method of Borshe and Herbert and Busch and Rast,^, and the study of further replacement reactions of the chlorine atom in the 4-position. The problem can be subdivided into two sections: (1) the preparation of the 4-cinnolyl Grignard reagent and the corresponding lithium compound and (2) the study of some condensation reactions of 4-chlorocinnoline.

An Analytical Study Of Berberine, W. Riley Mcgaughran

Chemistry and Chemical Biology ETDs

Berberine, an alkaloid, has unique pharmacological properties as well as unusual chemical and physical characteristics. This compound has been used for many years as a remedy for eye diseases. In contrast to most alkaloids, berberine hydroxide is more soluble than its salts. Its chemical structure has been established, but a correlations of many of its properties and its structures has not been made.

The purpose of this work was to undertake an analytical study of berberine, hoping to collect data which would make possible the correlation of certain properties of the compound with its structure. The study was planned to …

The Application Of Qualitative Inorganic Macro Procedures And Reagents To Spot Test Analysis, John Albert Stich

Bachelors’ Theses

Qualitative inorganic analysis is that branch of applied chemistry which has to do with the systematic detection or identification, and separation of the various metals and groups of elements which make up inorganic compounds. The indentification is made on the basis of precipitates and the color changes thereof, which result when a specific reagent is added to a solution of the sample. As opposed to quantitative analysis, measurability is not the essential factor, but it must be possible to observe the reaction easily and indubitably. It is not necessary for the material being tested for to be converted completely to …

The Effect Of Metals On Yeast Activity, Warren Joseph Chamberlain

Bachelors’ Theses

The writer, having been employed in the dry yeast research laboratory of one of this country's largest yeast concerns for the past three years, is very much interested in those factors which might affect the qualities of the final dry yeast product, and has therefore made the investigations presented in this paper.

Because of the numerous pieces of metallic equipment employed in the production of yeast, the possibility of metallic contamination in the final yeast product is considerable. Thus, the investigation presented in this paper was carried out in an effort to determine just what effect various concentrations of various …

An Investigation Of The Electrolytic Behavior Of The Nitroparaffins, Harold A. Brejcha

Master's Theses or Doctor of Nursing Practice

A study of the electrolytic behavior of this group of compounds was undertaken to gain some knowledge of a little known type of reaction of these compounds. The study was made, not so much in view of developing new uses for these compounds, as to gain a better understanding of their behavior under various conditions. Another reason for this investigation is the fact that chemical reduction by the usual methods is inconvenient. With this fact in mind, the inherent convenience of electrolytic methods made the study of the electrolytic behavior of the nitroparrffins worthy of investigation.

A Study Of The Use Of The Dicyanatodipyridine (Ii) Complex For The Determination Of Cyanate, Jean Mcclelland

Chemistry and Chemical Biology ETDs

Treadwell states in his text, Analytical Chemistry, Volume II, that "the only method for examining cyanates consists in determining the amount of carbon and nitrogen present by combustion." A review of the available literature shows that, although this is not literally true, a procedure for this quantitative determination of small amounts of cyanates in the presence of interfering substances is lacking.

A survey of the literature yielded few references for instrumental methods for the quantitative determination of cyanates. Ripan-Tilici published a method for the determination of cyanates poteniometrically, but attempts to duplicate her work have failed. Madame Tilici, in …

The Syntheses And Ultraviolet Absorption Spectra Of 2-Imidazolines, 2-Imidazolidones And Imidazolidines, Robert J. Ferm

Chemistry and Chemical Biology ETDs

The first method used to prepare 2-imidazolines was through the reaction of aromatic aldehydes with ammonia. Amarin, which is known as 2,4,5-triphenyl-2-imidazoline, was the first compound reported to be prepared in this manner. This type of reaction has since been widely studied 2,3,4,5,6 in connection with the preparation of 2,4,5-triarylimidazolines. Furfural and ammonia have also been reported to react in a similar manner. Amarin has also been obtained from the reaction of a mixture of benzil, ammonia, and benzaldehyde.

The Preparation And Properties Of Aromatic Ditellurides, Roger Sanftner

Chemistry and Chemical Biology ETDs

It has been shown that tellurium tetrachloride combines additively with aliphatic others yielding hygroscopic compounds of the type R2O•TeCl4, but with mixed ethers, containing both alkyl and aryl radicals, substitution takes place with the elimination of hydrogen chloride.

The Chelation Of Praseodymium As A Function Of Ph Using Thenolytrifluoroacetone, Thomas K. Keenan

Chemistry and Chemical Biology ETDs

The rare earth elements, including elements 57 through 71, provide many diverse series of studies through their chemical reactions. In as much as these elements are all in Group III of the periodic table, they are markedly similar in their properties. The separation, insulation and purification of the various rare earths from one another has long been a problem of great interest to the chemist. All of these elements show a principle valence of plus three. Cerium has a well-defined plus four state, stable in aqueous solution and europium forms a stable, insoluable divalent sulfate. Those two exceptions, however, are …

A Study Of The Intermediary Products Formed During The Life Of A Copper Cyanide Plating Bath, Matthew E. Carlisle

Chemistry and Chemical Biology ETDs

Four aims of a study of cyanide baths were:

1. To study the intermediate products formed during the operation of plating and stripping baths under various conditions.

2. To identify these intermediate products or complexes and to determine whether or not they caused the failure of the bath.

3. To consider the conditions that caused a bath to fail, and to be able thereby to increase the life of the bath.

4. To develop a fast, accurate method for controlling the baths, preferably by means of the cyanide content.

The Use Of Ethyl 4,4-Dimethyl-1-Isopropyl-2-Imidazolinyl-2-Acetate In The Synthesis Of Some 2-Imidazolines, Jacob Shapira

Chemistry and Chemical Biology ETDs

The first recorded synthesis of a 2-imidazoline was reported in 1882 by Radziszewski who obtained what he thought to be 2,4,5-triphenyl-3-imidazoline by warming an alcoholic solution of benzoin, ammonia and benzaldehyde. ‘Amarine’, the common name for this compound, has been shown to be 2,4,5-triphenyl-2-imidazoline.

The Synthesis And Insecticidal Activity Of Some Halogenated Aromatic Ethers., Tien-Chih Chen

LSU Historical Dissertations and Theses

No abstract provided.

Liquid Potassium Soaps From Coconut And Corn Oils, Jack R. Kaestner

Bachelors’ Theses

My interest in liquid potassium soaps began a number of years ago. At this time I was employed at a company that manufactured various cleaning preparations, one of these being a liquid soap prepared by the interaction of potassium hydroxide and cocoanut oil. It was there that I first became acquainted with techniques and problems encountered in the soap industry.

The above mentioned notes took place during the middle of World War II, and consequently the author became familiar with some of the different fats and oils that were substituted for the then unavailable Philippine coconut oil. All of the …

The Possibility Of Using Gelatin As A Substrate In Determining The Effect Of Ph On The Activity Of Hyaluronidase, Robert P. O'Driscoll

Bachelors’ Theses

The aim of this research is as follows:

1. To determine the feasibility of using gelatin as a substrate for hyaluronidase.
2. To determine the optimum pH for the enzyme acting upon a gelatin substrate.
3. To determine qualitatively and quantitatively if reducing sugars are present in the substrate after action by the enzyme.

The work on hyaluronidase is relatively new. However it is the most extensively studies mucolytic enzyme.

A Study Of Magnesium Silicate As A Base Matrix Material For Fluorescent Materials, John D. Hopperton

Chemistry and Chemical Biology ETDs

Luminescent materials have come into wide and important use within the past ten years in such equipments as the fluorescent lamp, and the cathode ray television tube. Because of this wide interest and usage, there has been made a concentrated search for ever brighter luminescent materials. It has also been of importance to produce and investigate materials which would produce as a wide range of colors under excitation as possible.

An Investigation Of The Dissociation Of Certain Cyclohexane Derivatives Of Aliphatic Acids, Jack Norman Finch

Master's Theses or Doctor of Nursing Practice

For years it has been known that certain cyclic derivatives of aliphatic acids show hormone activity as growth regulators for some plants, and popular acceptance and application of the regulators has been remarkably rapid. Two commercially available growth regulating substances are indoleacetic acid and phenylacetic acid. Others also include indolebutyric acid and naphthaleneacetic acids (13). There are also certain phenoxy derivatives of acetic acid such as 2,4-dichlorophenoxy acetic acid (commonly called 2,4 D), which have specific destructive effects to growing plants. Many derivatives of phenoxyacetic acid have been prepared, their physical properties determined, and an attempt made to correlate molecular …

Synthesis Of Imidazolines, Diazepines, Triazepines And Imidazolidones From A 1, 2-Diamine And 1, 1-Dicarboxylic Esters, Irwin J. Pachter

Chemistry and Chemical Biology ETDs

In 1884 Freund (1) heated a mixture of malonic ester and ethylenediamine and obtained a product which dried to give a high melting powder. He named the compound ethylenemalonamide and attributed a seven-membered ring structure to it.

Electrolyte Equilibria In Blood, Edward J. Fitzsimons

Dissertations

No abstract provided.

Electrophoretic Studies Of A Synthetic Rubber-Like Lastex., Hulen Brown Williams

LSU Historical Dissertations and Theses

No abstract provided.

A Comparative Study Of Some Dehydrating And Infiltrating Agents, Albin A. Sheputa

Bachelors’ Theses

During the past two decades methods in biological technique have been constantly improved and perfected. However, the choice of a universally satisfactory dehydrating and infiltrating agent has been much debated and various well known authorities in the field of biological technique have left this problem unsolved to the complete satisfaction of all concerned.

Synthesis Of 2-Phenyl-2,1,3-Triazole-4-Carboxaldehyde And Some Derivatives, Gene Sumrell

Chemistry and Chemical Biology ETDs

It was decided in this problem to prepare 2-phenyl-2,1,3-triazole-4-carboxaldehyde (III) as a starting material by the method suggested by Hann and Hudson and run a number of typical aldehyde reactions with it. The preparation of (III) involved: (1) The hydrolysis of sucrose to form glucose and fructose; (2) conversion of these two sugars to D-glucose phenylosazone (I), by reaction with phenylhydrazine; (3) transformation of (I) to D-glucose phenylosotraizole (II), by the action of hot aqueous copper sulfate; and (4) oxidation of the side chain from (II) with sodium periodate, forming (III).

The reactions selected were: (1) the Grignard reaction; (2) …

Fatty Acids From Muskrat Scent Glands., Homer Bennett Hix

LSU Historical Dissertations and Theses

No abstract provided.

Lipide Stimulation Of Lactobacilli., Virginia R. Williams

LSU Historical Dissertations and Theses

No abstract provided.

Studies In The Determination Of Iodine In Soils Organic Materials, And Waters, Russell T. Lundell

Theses and Dissertations

A summary of the literature on the nutritional value of iodine in the diet of various forms of life is given. The majority of evidence indicates that iodine is an essential element in plant and animal nutrition. It functions particularly in animal metabolism in the form of thyroxine. The occurrence of iodine in a nature has been briefly discussed. Investigations made in this regard indicate iodine to be almost universally distributed in very minute amounts. Most iodine salts are soluble in water and their distribution is affected by water movements. Results of iodine determinations made during the course of this …

Malonic Acid Synthesis, Mary K. Hormuth

Bachelors’ Theses

The search for new organic compounds, the discovery of their proper­ ties and the utilization of them, both in the industrial and the biological field has always been the challenge to the organic and research chemist. In particular, the study of fatty acids and their related compounds has been the particular problem to not only the physiological chemist, but also the industrial chemist. The research in this direction has tremen­dous possibilities tor only the even carbon and normal chain acids have been isolated in nature. Here difficulty is often met when trying to establish and identify this type of acid …

A Study Of Factors Influencing The Hydrolysis Of Corn Amylopectin By Barley Malt Enzymes., Thelma Munsey Back 1918-2006

Electronic Theses and Dissertations

No abstract provided.

Occupational Chemical Hazards In Industries Of Louisville And Jefferson County., Morgan Brown Lewman

Electronic Theses and Dissertations

The facts and conclusions presented in the following pages are the results of figures gathered during two and one half years of work as an Industrial Hygiene Engineer for the Louisville and Jefferson County Health Department. The factual information was acquired from many sources including extensive reading to which reference is made of the more recent publications in the bibliography and also from correspondence and discussions with authorities in various fields. Much data was gained from "in-service training" received at the United States Public Health Service; Bureau of Industrial Hygiene, Bethesda, Maryland; University of Michigan; National Conference of Governmental Industrial …

A Study Of Some Dehydrating And Infiltrating Agents, Monica Hoefs

Bachelors’ Theses

The ethyl-alcohol-xylol series produces a hardening and shrinking of the tissues. It has long been criticized for this reason.