Physical Sciences and Mathematics Commons^™

Concentration Of Fluorspar Ores In The Illinois-Kentucky District, Omar Watson Greeman

Masters Theses

"The object of this investigation is to study the means of beneficiating fluorspar ores in order that a marketable product may be made"--Preface, page v.

Experimental And Observational Geometry, Albert D. Field

University of the Pacific Theses and Dissertations

Geometry has the distinction of being one of the oldest subjects given in the high-school.

Its subject-matter was formulated and organized by the Greeks into a fine system of thought before the time of Christ. Since leaving the hands of the Greeks, geometry has received only a few minor changes, and these largely in recent years.

Heretofore, the study of geometry has been made almost entirely dependent upon memory and reasoning. Geometricians have been slow in adopting the laboratory and observational methods.

This thesis has been written to encourage the student in his work of observing geometrical forms, and in …

Color., Bruce B. Vance

Electronic Theses and Dissertations

Color, any attempt to apply the scientific principles of color vision in the making of a picture must surely fail if it be not granted at the out set that it is only to a limited degree that those principles can apply. Color appreciation is as much a psychical as a physiological, and indeed, it is psychical not only with regard to the objective impression itself, but also with regard to the subjective, the associational mental process. Previous knowledge and training, experience traditions, the association of color impressions with impressions previously received through other senses and stored away as memories, …

A Method Of Measuring The Velocity Of Gravitation, Percy Martin Roope

Historical Dissertations & Theses

For many years the velocity of gravitation, or more properly, the velocity of propagation of gravitational potential, has been the subject of much theoretical discussion. The magnitude of this velocity according to proposed theories varies from the velocity of light to infinity. According to the theory of relativity, the velocity of gravitation should be equal to that of light, and the success which experimental tests of the theory have met justify this assumption. No previous work has been done, however, which would form the basis of a direct measurement. During the past three years, experiments relating to the velocity of …

A Study Of The Ph Of Sodium Citrate In Relation To Blood Transfusion, Roman Edward Galasinski

Bachelors’ Theses

Blood transfusion, within recent years, has become a subject of paramount therapeutic importance. A few years back the technique of blood transfusion was so difficult that there were only a relatively few who possessed the requisite skill to perform the operation and then not always successfully. But since the year 1907 the evolution and perfection of blood transfusion procedures has been so steady and immense that, as a therapeutic measure, it has come into general use in the treatment of various acute and chronic lesions.

Irrational Numbers, Paul O. Smith

Bachelors’ Theses

By an irrational number is meant a number which cannot be expressed by an Integer or by a fraction. The definition in itself is rather vague and to many would not mean very much but by a definite geometric example the idea of just what an irrational number is can be much more clearly shown. Suppose we are given a line of a definite length of two inches. It can easily be seen how this line can be divided into a great number of smaller parts which can be expressed by integers and fractions.

History And Proof Of The Binomial Theorem, Ethel B. Ray

Bachelors’ Theses

Everyone realizes what a wonderful place the world really is. Yet, we of this day little think of the many generations that have gone to make our universe as it is. We think we have done wonders. We pride ourselves on our modern way. There is a tendency in man to "pat himself on the back" and boast of how well he has done. Little do we realize that millions and millions of people have given their whole lives so that we might be as we are. Of course the soldier gives his life for his country; but what of …

Methods Of Tracing Curves, Stephen Lewandowski

Bachelors’ Theses

There are two kinds of equations, algebraic equations and transcendental equations. An algebraic equation is one that involves a finite number of ordinary operations of algebra i.e. addition, multiplication, subtraction, division, extraction of roots, and raising to powers denoted by constant exponents.

Hyperbolic Functions, Margaret S. Johnston

Bachelors’ Theses

A Study of hyperbolic functions is both interesting and fruitful because of their important and historical relation to the more elementary branches of Mathematics: Trigonometry, Analytical Geometry and Differential and Integral Calculus. Historically the development of hyperbolic functions has been closely associated with the development of the properties of the circle, ellipse, and hyperbola; the earliest knowledge of the functions rising out of a comparative study of these curves, and resting on more analogy rather than clear definition and proof.

The Effect Of Aldehydes On The Solutions Of Iron Wire In Hydrochloric Acid, Mary Margaret Bannen

Bachelors’ Theses

The destruction of iron by corrosion, under the influence of natural agencies, is far more rapid than the decay of wood and other materials of construction. Were it not for iron, the erection of large works of engineering would be impossible. Their very size and consequent cost represent a large sum of human energy. This is, after all, the only true foundation for wealth and it becomes a duty to preserve iron from decay.

Indeterminate Coefficients, Armond William Bear

Bachelors’ Theses

No abstract provided.

The Picric Acid Method Of Sugar Determinations As Applied To Solutions Containing Maltose And Lactose, John J. Hennecke

Bachelors’ Theses

Lewis and Benedict based their method of sugar determination upon the reaction which takes place when a glucose solution is heated with a few C.C. of picric acid to which a small amount of alkali has been added.

The Effect Of Various Waxes On The Rate Of Evaporation Of Light Naphtha, Juel Osmund Severson

Bachelors’ Theses

Solids dissolved in a liquid produce a general decrease in the evaporation rate of the solvent. Experiments were performed, using light naphtha as the solvent and Paraffin, Japan, Carnauba, Candelilla, Ozokerite, Montan, and Bees waxes as solutes. These waxes were selected since they are the waxes most commonly used in the manufacture of floor waxes and work of the kind presented in this thesis finds its greatest application in connection with that industry.

The Catalytic Action Of Neutral Salts : The Effect Of Normal Alkali Sulphates On Alkali Acid Sulphates In The Ketonic Splitting Of Ethyl Acetoacetate, Elbridge Alvah Goodhue

Masters Theses

"The catalytic effect of neutral salts has been investigated for numerous reactions and various theories propounded to account for their action. In this work the action of normal potassium and sodium sulphates on solutions of the corresponding acid salt has been investigated for two concentrations of the latter at three different temperatures. An attempt has been made to account for the observed actions"--Introduction, page 1.

The Solubility Of Solid Paraffin In The Lower Molecular Weight Hydrocarbons, Paul Weber

Masters Theses

"In the process of oil refining, a certain fraction of distillate from the crude oil composes the so-called wax distillate fraction from which is obtained the various lubricating oils. But the presence of the waxes and solid paraffins in these oils is very undesirable as they possess no lubricating qualities. Consequently, they must be removed from this wax distillate before the oil can be marketed"--Introduction, page 1.

Development Of Selected Mathematical Instruments Representing Angular, Logarithmic And Arithmetic Computation, Lillian L. Troxell

University of the Pacific Theses and Dissertations

The Sextant in its earliest known form consisted of divided circles and compasses with simply sights. An early Creek astronomer of the second century after Christ, Claudius Ptolemaeus, or more commonly called Ptolemy, wrote a book entitled Megale Syntaxis tes Astron- omias, also known by the Arabic title Almagest. The instrument described in this book was called the Astrolable and was used to measure the angular distance between stars. It was made of two concentric vertical circles, the largest and outer circle was about sixteen inches in diameter with graduated arc; the central ring was movable and carried the two …

A Study Of Melting Points Of Various Binary Mixtures Of Waxes, George John Hable

Bachelors’ Theses

Waxes, chemically speaking, are a class of esters which consist of mono- or di-hidric alcohols united with the higher fatty acids. These waxes contain free fatty acids, free alcohols and hydrocarbons. A considerable quantity of free cerotic acid (C26H52O2) myricyl palmitate (C16H31O2. C31H63), and high melting point hydrocarbons are found in beeswax. The acids that occur in waxes appear to have an even number of carbon atoms. Paraffine, ceresine, and ozokerite are really not waxes at all according to the chemical conception. The latter two are esters of glycerine united with higher fatty acids.

Summable Types Of Series, Dorothea Maria Baumann

Bachelors’ Theses

By an infinite series we mean a polynomial, or a sequence of terms, each of which derives from its predecessor according to a fixed formula or process; there is a one to one correspondence, consequently between the terms of the series and the set of positive integers 1,2,----,n,----. Summation means the finding of a finite expression equivalent numerically to the given series; known functions only may occur, connected by a fixed number of steps; such a closed expression is called the "sum" of the series.

The Evaporation Of Pyroxylin Solvents And Non-Solvents And The Effect Of Dissolved Pyroxylin On Various Types Of Evaporation Curves, Herbert Heinrich

Bachelors’ Theses

In 1833 Braconnot described a body which he called Xyloidine. This material was obtained by the action of nitric acid on starch. In 1838 Pelonze produced a similar body by treating paper with nitric acid. Although these experiments were conducted several years before those of Soh8nbein, yet we give Schonbein the honor of priority because of bis extensive studies on the new compound "ex­plosive cotton wool". The material was produced by the combined action of nitric and sulphuric acids on cellulose. A patent was granted to him in the United States December 5, 1846, but little attention was paid to …

A Study Of The Preparation And Properties Of Some Metallic Soaps, Charley George Hagan

Bachelors’ Theses

Soap may be defined as the sodium or potassium salt of the acids that are found in fats. The metallic soaps are those soaps or salts of the metallic bases other than sodium or potassium. The Study of the preparation, properties and uses of metallic soaps is rather an old one, most of the research along that line being done during the last quartile of the nineteenth century. Nothing of any importance has been done of late years in this field of research. Nearly all the work has been done by foreign investigators. The metallic soaps of oleic acid are …

A Specific Gravity Study Of Some Of The Southeast Missouri Lead Ores And Tailings, Robert Gibson O'Meara

Masters Theses

"The object of this investigation was to study some of the Southeast Missouri lead ores and tailings to trace the freeing of galena through all of the screen sizes. It was also desired to determine the efficiency of recovery with the present treatment and, whether or not a change to finer crushing would be advisable. In order to isolate parts of different specific gravity in the ores and tailings, heavy liquids were used"--Object of Investigation, page 2.

Comparative Value Of Various Grog Materials For The Manufacture Of Zinc Retorts, Wei-Tung T. Hu

Masters Theses

"As before stated, this present investigation, of which this thesis covers only a part, undertakes to study the comparative values of various grog materials for the manufacture of zinc retorts, having as its object to find better grog materials for the purpose than those commonly in use at the present time, and to determine the best proportions of bond clay to use with each kind of grog"--Scope of Investigation, page 4.

The Separation Of Inorganic Salts From Food Products By Dialysis, Nicholas H. Tasto

Bachelors’ Theses

The phenomena of the separation of substances by 'Various membranes was first -discovered by Thomas Graham, who found that certain materials passed through membranes much more readily than others. This consequently afforded him a norm by which he distinguished a variety of substances. Those which passed through the membrane most readily he called crystalloids, because of their crystalline nature. Those which were retained colloids, because of their gelatinous or glue like consistency. The distinguishing factor is however not a legitimate one, because it has been proven by Dr. Kahlenberg that opposite reactions occur.

A Study Of The Lead-Sodium Alloy, Harrison Willmot

Bachelors’ Theses

The history of the alkali metal alloys does not indicate that researches into this particular field have been extensive and of a necessary consequence, methods and practices for the handling of the alkali metal alloys in general and for the sodium.

Graphic Methods For Solving Algebraic Equations, L. Tremaine Dunlap

Bachelors’ Theses

No abstract provided.

A Study Of Phytosterol Obtained From Cocoa Beans And Cocoa Butter, Norman Anthony Pokorny

Bachelors’ Theses

Despite the fact that considerable work has been done on cholesterol, relatively little is known about its isomer, phytosterol. Both cholesterol and phytosterol belong to the general group of sterols. Cholesterol is described as an aromatic sterol, a mono~atomic secondary alcohol, containing an iso-propyl and a vinyl group, with a terpene-like structure. Cholesterol was first discovered by Conradi in 1775, then by Gren (1788) in biliary calculi. In 1785 Fourcroy isolated cholesterol from gall-stones, one variety of which is composed almost wholly of it, but it was confused with adipocere, until Chevreul (1814) discovered its true nature, when he declared …

A Study Of The Reactions Of The Sulphies Of The Tin Group With Hydrochloric Acid And In Non-Aqueous Solutions, Charles Bernard Cannon

Bachelors’ Theses

Arsenic, antimony, and tin constitute the so-called tin group, a subdivision of the hydrogen sulphide, or second group, in qualitative analysis.

A Granular Briquette Resistance Furnace For The Electrothermic Dry Distillation Of Zinc Ores, Milton E. Countryman

Masters Theses

[This thesis] "describes experiments carried on at the Mississippi Valley Experiment Station of the United States Bureau of Mines, Department of the Interior, cooperating with the School of Mines and Metallurgy of the University of Missouri, which had for their purpose the development of a 'granular briquet [sic] resistance furnace' for the electrothermic dry distillation of zinc ores"--page v.

Effect Of The Size Of Particles Of Zinc Ore And Carbon Upon The Rate Of Reduction Of Zinc Ore By Carbon, Keith Oxley Alexander

Masters Theses

"In the retort smelting of zinc ores one of the chief metallurgical problems is to obtain as complete a reduction of the zinc as is consistent with economical operation. Among the factors influencing the completeness of reduction are the temperature and time of distillation, the form in which the zinc exists in the ore, the form of carbon used as reducer, and the size of the particles or ore and reducer"--Introduction, page 1.

Effect Of Various Factors On The Rate Of Reduction Of Zinc Ferrite, Calamine, And Willemite By Carbon, Foster Cary Nix

Masters Theses

"Zinc ores containing large amounts of ferric oxide, calamine and willemite have been known for a long time among practical zinc metallurgists to be more difficult to reduce than ores of the same type but free from the above named compounds. This has been thought to be due to the high temperatures necessary for the reduction of the zinc ferrite and the zinc silicates by carbon. The ferrite is formed both during the roasting of sulphide ores and during distillation in the retorts, while calamine and willemite are introduced as such in the ores. The amount of ferrite formed during …