Chemistry Commons^™

A Cytolocical Study Of The 4th Chromosome Of Eyeless Drosophila, Joyce Ruth Soelch

Bachelors’ Theses

In Drosophila Melanogaster the recessive gene for eyeless and its normal allelomorph, which cause in general a redaction of the size of the eye in the adult fly, are situated in the small 4th chromosome. The purpose of this experiment was to make a Cyto- logical study and comparison of the 4th chromosomes of the eyeless Drosophila and the normal plus or wild type to determine whether this recessive gene, located on the 4th chromosome, results in a difference in the number, size, formation, or location of bands.

A Suggested Method For The Measurement Of Unsaturation In Organic Compounds By Means Of A Hydrogen Number, Richard Roberts

Bachelors’ Theses

The measurement of unsaturation in organic compounds are commonly expressed in terms of an iodine number, but as this value is not trustworthy in a number of cases, it has been suggested by earlier worker that an indication of unsaturation could be obtained by the quantitative hydrogenation of a compound and expressing the result in terms of a hydrogen number. Although such determinations have been previously made, usually at elevated temperatures and pressures, it is the purpose of this work to carry out the hydrogenation at room temperature and atmospheric pressure. For purposes of comparison, determinations will be made at …

A Viscometric Determination Of The Diastatic Effect Of Amylase On Starches, Dawn Marie Ehlert

Bachelors’ Theses

Internal friction causes some liquids to flow with less freedom than true solutions of the same density. or with less freedom than water. This is attributed in part to larger particle size and prompts one to propose that when using solutions in which the dissolved substance has not been dispersed and subdivided to single molecular particles that the dissolved particles may be present as com­binations. These combinations may increase to enlarged dimensions with changes in temperature, density. electric charges. etc. Similar conditions are characteristic o starch solutions. The solutions are colloidal and vary in particle size. In some situations the …

On The Production Of Polyploidy With Paradichlorbenzene, Mary Anne Carey

Bachelors’ Theses

The subject of polyploidy has been of scientific interest for some time. The true nature of the cause of this phenomenon has been disputed ever since its existence was made known. Polyploidy is the condition in which the haploid number of the chromosomes, contained within the nucleus, is multiplied so that there is a higher number of chromosomes present than there is in the typical diploid cell of that particular plant or animal. The diploid number of the chromois known as 2n, therefore, higher multiples would be referred to as 3n, 4n, 8n etc. Some plants or animals have one …

Micro-Density Determinations Of Liquids, Rachel L. Horowitz

Bachelors’ Theses

Recent developments in the field of microchemistry have aroused the necessity of accurate micro-methods for density determinations. Such methods have been developed by various investigators and some of them found their application in re­ search and industry, wherever the saving of material and time was an essential problem.

The purpose of this work is to compare all the methods of micro-density determinations found in literature, check their accuracy and simplicity and find their limitations and advantages.

The Effect Of The Ph On The Viscosity Of Various Gelatin Solutions, Theodore C. Kraus

Bachelors’ Theses

Tremendous research has been done in recent years In the field of the protein colloids. Our small, but nevertheless important knowledge of the protein colloids is due to such eminent investigators as Loeb, Kruyt, Freundlich, and Hardy, to name only a few. They have presented to the scientific world valuable experiments and reports of their work. However, much remains to be accomplished in spite of their achievements. The fact that the whole of the organic life processes concerns Itself with colloidal phenomena, particularly the reactions of large aggregates of protein particles, is indicative that the field is widespread in its …

Preparation And Properties Of Diethylene Glycol Fumarate Resin, Marian Sargent

Bachelors’ Theses

Fumaric acid, an unsaturated acid, condensed with diethylene glycol forms diethylene glycol fumarate, a resinous product of high molecular weight. This reaction is typical of condensation reactions. Since this is only the first step in making suitable finished products, the author wished to make a study of the preparation and properties of this condensation product and determine which of the known polymerizing agents were best suited for practical use .

Preparation And Properties Of Diethylene Glycol Fumarate Resin, Marian Sargent

Bachelors’ Theses

Fumaric acid, an unsaturated acid , condensed with diethylene glycol forms diethylene glycol fumarate, a resinous product of high molecular weight. This reaction is typical of condensation reactions. Since this is only the first step in making suitable finished products, the author wished to make a study of the preparation and properties of this condensation product and determine which of the known polymerizing agents were best suited for practical use.

The Influence Of Gelatin On The Ph Of Acids And Bases, Beverly Terwilliger

Bachelors’ Theses

The purpose of this thesis is to determine how gelatin behaves in the presence of various acids and alkalis. It is possible to titrate gelatins with acids and bases and thereby determine the relation of the pH of the solution to the amounts of acid or base combined with the gelatin. If the results are plotted, a titration curve is obtained, the value of which gives the acid and base combining properties of a certain gelatin.

A Chromium Plating Bath Containing Sodium Benzenesulfonate Instead Of Sulfuric Acid, Edward Burleigh

Bachelors’ Theses

At the present day chromium plated articles are saving the country many tons of badly needed metals. The beautiful, bright,luster that chromium has is no longer the prime quality that makes its use so extensive. Today its extreme hardness has taken the foremost place. Parts worn by use and re-claimed with chromium, not only wear longer than the original ones· but they also save valuable metal and time put into new ones. New articles plated with chromium have increased life, and thus the time and metal needed for replacement is greatly reduced.

The present chromium plating baths containing sulfuric acid …

The Cleaning Action Of Detergents And Soaps On Printer's Ink And Lubricating Oils, Daniel David Holzman

Bachelors’ Theses

During the past few years, industry has developed a steadily increasing interest in certain new types of synthetic organic compounds.

Industry devoted to the cleaning of textiles has found the removal of printer's ink and lubricating oils a tedious operation.

There has been developed and perfected a series of synthetic materials which successfully meet modern needs.

The detergents, in general, have some or all of the following properties: wetting-out, dispersing, emulsifying, penetrating, and cleaning.

There seems to be a need to investigate some of these new detergents for commercial cleaning purposes.

The Effect Of Elevated Temperatures On Zinc Plated Copper, Jerome E. Sommerfield

Bachelors’ Theses

While attending school the author was employed by the Harnischfeger Corporation and the subject of the thesis was chosen along a line in which the writer was familiar.

A Study Of The Transparency Of Paraffin Wax, Gordon B. Smith

Bachelors’ Theses

The problem of wax transparency with which this thesis is concerned interested the author as a result of past experience with a bakery firm. The practical application of a positive solution to this problem would be as a competitor of cellophane, that is, transparent paraffin used for commercial wax paper would combine the quality of keeping bakery goods fresh with the display value of cellophane.

A Study Of The Bright Nickel Producing Properties Of Tergitol Penetrant 4, Maurice F. Murphy

Bachelors’ Theses

For many years, it has been known in the plating industry that certain metal baths were affected when materials called ’'addition agents” were added. The addition agents were usually organic and had high molecular weights. Nickel is especially sensitive to the presence of such foreign substances, a very bright deposit being obtained upon the addition of small amounts of gum, gelatin, glue, gum tragacanth, gum arabic and similar materials. These substances have, however, proved unsatisfactory because of difficulty of control and because of decomposition of the agent.

In the past ten years a new type of bright nickel bath has …

Activity Of Papain On Gelatin Mixtures, Edward J. Ruschmann

Bachelors’ Theses

Within the Marquette chemical laboratories under the direction and supervision of Dr. John R. Koch, professor and head of the Chemistry Department, many noteworthy advances in enzyme chemistry have been achieved. A new type all glass, single unit viscometer was developed and perfected by Koch and now is the basis of the study of enzyme activity by viscometric methods. The use of this viscometer is not limited solely to work in these laboratories but has also been used with great success in bating and brewing.

A Study Of The Effect Of Various Organic Compounds Upon The Corrosion Resistance Of Stainless Steel In Sulfuric Acid, Cyril J. Stockhausen

Bachelors’ Theses

Ever since the use of metals become a vital part of modern living, much has "been written about corrosion and its prevention. With regard to corrosion prevention by means of absorbed films, most of the study has "been restricted to experimentation either with commercial compounds of unknown composition or complex amines and sulfonates with little attention paid to a comparison of different polar groupings and the influence of metallic structure.

Concrete And Cement Surface Coatings, Gabriel J. Popovich

Bachelors’ Theses

It has been with difficulty that precise information of any kind regarding the surface coating of concrete and cement finishes had been found. In fact, there was limited information to be found after 1930. Having but a short time to conduct any research, it was impossible to delve too deeply into this branch of the thesis. It is sincerely hoped that in the very near future a more thorough, extensive and comprehensive study can be made on this subject. The purpose of this thesis is to determine the best composition of concrete and the best surface coating for it and …

A Study Of The Amino Nitrogen In Various Gelatins By Means Of The Ninhydrin Reaction, Wilma Jane Thrush

Bachelors’ Theses

Experimental work and study has shown that the activity figures measuring the effects of proteolytic enzymes, such as, pepsin, trypsin, and papain are not the same for the various gelatins used as substrates.

An Experimental Study Of The Destruction Distillation Of Corn Cobs, Wendall Lee Perry

Bachelors’ Theses

The utilization of waste products is daily becoming more and more important. It has always been a big problem of industry to utilize its waste material; and as a result, limitless effort has been spent in the attempt to stress utility and economy in all forms of production. Under ordinary circumstances, the utilization of many waste products has been disregarded because of the large expense involved; but in critical times such as the present, expense becomes a secondary issue, and the actual production of necessary material becomes foremost. It is true that the waste connected with large industries is very …

The Effect Of Time, Temperature, And Pressure On The Hydrogenation Of A Mixture Of Linoleic And Oleic Acids, Gordon S. Wepfer

Bachelors’ Theses

During the past few years interest and experimentation in the field of hydrogenation of different fats and oils has increased enormously. Strides made in the oil-hardening industry have surpassed all expectations. These advances were brought about by simplifying old methods and creating new ones. The probable reasons for this impetus in research is due to the fact that unexpected uses for hydrogenated oils and fats have been found and will continue to be found. With the increase in use of these products the market for them will also increase. Recently, the resin industries have produced useful products by condensing pure …

The Study Of The Physical And Chemical Factors Influencing The Plankton In The Menomonee River, Hermoise Katz

Bachelors’ Theses

The reasons for the choice of this study are several in number. Previous collecting trips had shown to some extent the relatively high productivity of organic life in this stream. From superficial external evidence, however, it seemed likely that the stream should contain some degree of pollution. The contradictory nature of these two observations called for furthur investigation. Then too, the nearness of the location of the Menomonee River to Marquette University contributed to the facility of such an investigation, and also pointed to the possibility that such a survey might be of some use to the Department of Biology. …

A Study Of Resins From Carbohydrates, Edward F. Sullivan

Bachelors’ Theses

The availability of large amounts of carbohydrates, and the need in the past years of larger markets for the available supplies of sugar have lead a number of sugar companies to investigate the possibilities of synthetic resins from carbohydrates. Although in the last ten or twelve years, a number of steps have been taken in the investigation of sugar resins, the information available has been restricted to a few patents. Consequently, information on the chemistry of the problem has been neglected. Thus, this work, for the most part, covers partially the possibilities of producing alkyd resins from saccharides, as well …

Solubilities Of Glycerides, Alois L. Wagner

Bachelors’ Theses

The mono, di, and triglycerides have many uses in industry; each of these glycerides has a specific purpose, if not directly, then as an intermediary compound .in the synthesis of a glycerol derivative. In order to obtain the highest efficiency in a synthesis, or as a matter of fact, in any phase of chemistry, the production of a homogeneous result demands the use of pure uniform constituents.

The Effects Of A Carbohydrate Deficient Diet On The Mouse, Walter Rudolph Sala

Bachelors’ Theses

Deficient diets have been used extensively as the basis for zoological experiments concerning the metabolism, and dietary requirements of individual animals. The majority of this work has been carried on with the rat as the subject, and resulting external physical variations as the experimental aim. The writer used the mouse as his subject, but, since no literature was available concerning this animal, a few similar experiments performed on the rat will be cited.

The Preparation Of Some Typical Organoboron Compounds, Glen David Barbaras

Bachelors’ Theses

Organoboron compounds have long been known, the first being prepared by Frankland as early as 1862. No particular interest in these compounds was aroused, how ever, because of the difficulty and expense of their preparation as well as their extreme instability. From time to time further attempts at their preparation were made and a few reactions were ob­ served. With the rise of modern electronic theories of chemical combination, however, organoboron compounds were discov­ered to exhibit properties and undergo reactions which would substantiate these theories. Consequently, since 1936 possi­bly over a hundred of these compounds of many different types have …

Melting Point Studies Of Binary Mixtures Of Barbowax 4000 And 1500 And Various Waxes In An Air Chamber, Arnold P. Feider

Bachelors’ Theses

While selecting the subject of research for this thesis the author had the opportunity to consult several thesis conducted at Marquette University on the melting points of waxes.

The Corrosive Effect Of Sodium Acid Sulfite Solution Upon Stainless Steel As Compared With Carbon Steel And Cast Iron, Arthur John Haug

Bachelors’ Theses

Tilghman, in 1866, discovered the fundamental principle of the sulfite process - the treatment of wood with a solution of sulfur dioxide gas in water, with the addition of an alkaline bisulfite. However, he was un­able to pursue this discovery because of the difficulty of obtaining acid resisting materials.

A Study Of The Variation Of Concentration Of Sulfuric Acid As An Electrolyte Between Two Copper Electrodes, Scott S. Tomter

Bachelors’ Theses

When Arrhenius presented his theory of electrolytic dissociation approximately fifty years ago, little did he realize that this theory would prove to be one of the corner stones in the epoch-making developments in chemistry since that time.

Electrochemistry, although still in early development, has risen so greatly in importance that it is now a necessary process in industrial chemistry. It can be estimated fairly that about one-seventh of all manufactured goods are prepared by electrochemical processes directly or indirectly; i.e., in the manufacture of the finished article or in the process of preparing the material.

Interest, herein, is centered on …

The Direct Chlorination Of Benzene And The Preparation Of Alpha And Beta Benzene Hexachlorides, Hubert B. Meloche

Bachelors’ Theses

This research was undertaken in order to study the breaking of the double bonds in a benzene ring by some means other than direct hydrogenation. A study of the literature reveals that the benzene ring has been broken up by chlorination giving hexachlorides of benzene as products of the reaction. But no information regarding the hexachlorides themselves or their method of preparation could be found in the current literature.

A Study Of The Effect Of Various Organic Polar Groupings On Inhibiting The Corrosion Of Steel By Sulfuric Acid, Frank H. Stockhausen

Bachelors’ Theses

Much has been written on the testing of organic compounds to inhibit the sulfuric acid corrosion in the pickling of steel. For the most part, however, this has been confined to work either on commercial inhibitors which are usually coal tar derivatives of unknown composition, or upon complex amines or sulfonates with little attention paid to comparing the types of polar linkages. The emphasis has been placed on the complexity of molecular structure rather than a thorough analysis of what structure really means in inhibiting action.