Physical Sciences and Mathematics Commons^™

Studies On The Quantitative Analysis Of Rhenium And Its Occurrence In The Products Of Molybdenite Processing, Walter Keith Dean

Masters Theses

"There is at the present time no commercially developed source of the metal rhenium in the United States. Since this metal is known to exist in molybdenite, it was felt that a study of the products of the metallurgical processing of this mineral might reveal a source of rhenium that could e developed. The Climax Molybdenum Co. provided a number of samples from their smelter at Langloth, Pennsylvania. Although an improved method for the quantitative estimation of rhenium was recently published, its accuracy was not high and the procedure exacting and time-consuming. These combined factors led to the selection of …

A Biochemical Study Of The Egg Yolk Discolorization Produced By Feeding Hens Cottonseed Meal., Albert Donald Swensen

LSU Historical Dissertations and Theses

No abstract provided.

The Removal Of Chlorides And Sulfates By Synthetic Resins., Lucille Grace Boudreaux

LSU Historical Dissertations and Theses

No abstract provided.

The Preparation And Properties Of Some 1-Alkyl-Cyclopentanols And Their Derivatives., Crawford Reid Mclellan

LSU Historical Dissertations and Theses

No abstract provided.

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.

The Effects Of Various Salts On The Proteolytic Enzymes In Malt Using Gelatin As A Substrate, John Mandak

Bachelors’ Theses

Because the new viscometric method offers a manner of measuring enzyme activity in a relatively simple manner, it is being applied to the various phases of enzyme study.

The Effect Of Catalyst And Time Upon The Oxidation Of Cotton Seed Oil Air Blown At 115 Degrees C, Joseph Toth

Bachelors’ Theses

Of late years, the manufacture of oils oxidized by the direct action of air upon them, has greatly increased. ’’Blown oils”, as these are called, render non-drying or semi-drying oils (rape, cotton seed, etc.) more suitable for paint, either directly or as ingredients in paint mixtures. In the case of drying oils (linseed oil, etc.), oxidation changes necessary to produce more rapid absorption of oxygen from the air by the oil, is brought about more rapidly.

This experimentation was suggested by the work of A. Ivanova, who blew air through cotton seed oil at 115°C until required drying properties were …

A Study Of The Electrodeposition Of Chromium Directly On Aluminum, Paul E. Truttschel

Bachelors’ Theses

The electrolytic deposition of chromium has been an accomplished fact since the early 1920's. Considerable investigation had taken place before this, but it was not until 1920 that any process had been devised to make chromium plating successful commercially. Since then, and especially in the last ten years, this has been a favorite research problem amony[sic] many electrochemists and the results have been most gratifying.

By far the greatest amount of work has been done, however, using metals such as copper, steel, and brass for cathodes, very little information being obtainable concerning the chromium plating of aluminum. Most of the …

The Separation And Identification Of The Solid Linseed Oil Fatty Acids By Fractional Crystallization Of Acetone, Albert J. Schlaeger

Bachelors’ Theses

It Is surprising to note in the literature that oils and fats like linseed, tung, tea seed, soya bean and other oils although employed in the arts for many centuries still have their exact composition unknown. The fatty acids composing most of our common fats and oils are recognized but many of their properties still remain to be known. Up to the lat fifteen years the examination of oils was concerned only with the purity of a sample and with crude methods only rough compositions were calculated.

The Effect Of Time, Temperature, And Pressure On The Hydrogenation Of Castor Oil, Anthony Toth

Bachelors’ Theses

The intention of the author in doing this research was to obtain some data on the effect of time, temperature, and pressure on the hydrogenation of castor oil at 100°C. The author is also interested to see if a method could be devised by which the saturated and unsaturated fatty acids could be separated from the hydroxy acids of hydrogenated castor oil.

A Determination Of The Melting Points Of Binary Mixtures Of Halowax 1014 And Natural Waxes By The Dropping Pellet Method, Leslie Jones

Bachelors’ Theses

The original intent of this thesis was twofold: First, to adapt the dropping pellet method of determining melting points to the determination of the melting points of various binary mixtures of Halowax 1014 and natural waxes. This work follows up the investigation of Kroening who used the ball and ring method of determining the melting points of mixtures of various Halowaxes and natural waxes. Second, to attempt to ascertain whether there are formed in these binary mixtures chemical compounds which would account for their peculiar behavior as regards melting points.

The Effect Of Alcohols On Paramecia, William C. Lawler

Bachelors’ Theses

A phenomenon of surpassing biological interest is the adjustment of living substance to its surroundings. That living things should so act as to promote their own welfare is indeed wonderful; that such acts are common is evident on every hand.

A Comparison Between Saponification And Iodine Values And Melting Point Curves For Mixtures Of Various Natural Waxes And Halowax 1012, William Kenneth Watts

Bachelors’ Theses

This thesis 1s concerned with the nature of the action of the lowering of the melting point of the various natural waxes by the addition of Halowax. The problem was suggested by the work of Louis Kroening in his thesis, "The Effect of Halowax 1012, 1013, and 1014 on the Melting Points of the Various Waxes", and also by that of Joseph M. Sevenich in his thesis, "An Investigation of Halowaxes in Trinary Wax Mixtures". The former showed conclusively that the presence of Halowax in a wax mixture invariably lowered the melting point of the natural wax. The latter showed …

The Preparation Of Methyl, Ethyl, And Borneol Glucoside, Florence Margaret Berger

Bachelors’ Theses

The present research was undertaken to find methods suitable for the preparation of methyl, ethyl, and borneol glucoside. The problem was to prepare methyl, ethyl, and borneol glucoside, and to determine their con­stants in regard to the melting point and optical rotation. These results were then compared to the results obtained by Emil Fischer and J. Hamalaienen.

Spectroscopic And Quantitative Determination Of Platinum, John W. Manning Iii

Chemistry Honors Papers

This 7 page thesis examines quantitative method and spectroscopic analysis of platinum.

An Attempt To Devise A Method For The Determination Of The Concentration Gradient In And Electrolyte Between Two Electrodes, Joseph J. Garvey

Bachelors’ Theses

Nowhere in the literature of chemistry can there he found a practical method for the determination of the concentration changes in a solution when subjected to an electric current. It is the purpose of this thesis to devise a method for this determination.

Applications Of Artificial Radioactivity To Problems In Chemistry, D. E. Hull

Journal of the Minnesota Academy of Science

No abstract provided.

The Biological Use Of The Stable Mass Isotopes, Allan Hemingway

Journal of the Minnesota Academy of Science

No abstract provided.

An Attempt To Correlate Certain Physical And Chemical Properties Of Various Commercial Animal Glues, Robert C. Andersen

Bachelors’ Theses

The manufacture and use of glue involves many important industries, and up to recent times we, in America, have lost much by our old "rule of thumb" and traditional methods for testing glues. In recent times much work has been done on a strictly scientific basis to explain the actions of glue from both a colloidal and a physicochemical aspect.

This thesis is concerned in particular with the possibility of coordinating the different properties exhibited by the accepted glue tests so that a definite criterion might be postulated for a high-grade animal glue. This task, however, proved extremely difficult, for …

Consumption And Uses Of Crude Barite And Its Derivatives, Peter Simonds

Masters Theses

"Barite is a widely distributed mineral composed of barium sulphate - BaSO₄. Its most striking feature is its weight - its specific gravity of 4.5 being about twice that of salt and many other of the colorless, transparent and vitreous minerals of its general appearance. The Mineral is usually found in a state of considerable chemical purity. However, small amounts of strontium and calcium sulphates may isomorphously replace the barium salt. Crystals of barytes are orthorhombic; usually very perfectly developed and have a wide variety of forms. The simplest crystals are rhomb-shaped tables bounded by two faces of a basal …

Electrolytic Reduction Of Galena In Fused Salt, Peter Simonds

Masters Theses

"A demand has long existed for a method of directly recovering elemental Sulphur, in addition to the Lead, from Galena ore. At the present time, the sulphur of this ore is dissipated in the lead blast furnace as sulphur dioxide fumes. While the fumes are trapped to avoid damage to the vegetation of the surrounding countryside, their concentration is usually too low to make sulphuric acid as a profitable by-product. Thus, contrary to some speculation, the sulphuric acid produces under the circumstances is usually not a true by-product in the money-making sense of the term in many cases, but a …

The Volumetric Determination Of Alumina In Clays And Related Materials, David Ferdinand Boltz

Masters Theses

"The primary purpose of this thesis was to develop a direct method for the determination of alumina in certain silicates. The classical gravimetric procedure for the analysis of alumina in clays and related materials has often been regarded as being too lengthy and troublesome, especially when only the percentage of alumina was desired. The correct determination of alumina is undoubtedly one of the most unsatisfactory of the chemical constituents of siliceous materials, and therefore the development of a direct volumetric method for the determination of this constituent was made the main objective of this research, page [1].

The Kinetics Of The Decomposition Of Ethyl-Chlorocarbonate., George Francis Kirby

LSU Historical Dissertations and Theses

No abstract provided.

A Study Of The Properties Of Sodium - Calcium Saturated Clays., Maurice Mccall Vick

LSU Historical Dissertations and Theses

No abstract provided.

Studies Of Hydrolysis Effects Upon Soil Colloids., Jack Ezelle Simpson

LSU Historical Dissertations and Theses

No abstract provided.

A Study Of The Kjeldahl Method And A Modification For The Determination Of Nitrogen In Alcoholic Distillates., Margie M. Miller

Electronic Theses and Dissertations

No abstract provided.

A Study Of The True Fermentable Substances In Grain And The Development Of A Rapid Method For The Determination Of Pentosans., Marjorie M. Laning 1916-2010

Electronic Theses and Dissertations

No abstract provided.

A Study Of The Photoelectric Properties Of Solutions Of Potassium In Liquid Ammonia, Adam S. Kowalczyk

Master's Theses

No abstract provided.