Physical Sciences and Mathematics Commons^™

Interpolation For The Median In A Frequency Distribution, Paul Cox

Mathematics & Statistics ETDs

It is the purpose of this study to discuss completely the median of a frequency distribution: first, by showing clearly what a median is; second, by showing the present and possible future applications for the median in the field of mathematical statistics; third, by taking all methods for interpolating for the median which have been advocated in the literature, or which may not have been advocated to date but appear plausible, and discuss these methods as to the way they are used, the plausibility of their use, and the accuracy obtained by their use.

A Geological Report On An Area Five Miles Southeast Of Renova, Montana, And On An Area Seven Miles South Of Jefferson Island, Montana, Herman Neibauer

Bachelors Theses and Reports, 1928 - 1970

This trip was conducted to give those students working for their respective degrees an excellent opportunity to work under actual field conditions. A total of three weeks was taken to complete the required work. Two weeks were spent in the field gathering data, and making maps, and the last week was spent in the drawing room at the college preparing the final map.

A Study Of The Effect Of Certain Variables On The Titration Of Silicic Acid, James S. Walker

Honors Theses

If a solution of sodium silicate is titrated with a strong acid, using methyl orange as an indicator, a very different end point is obtained from that obtained using phenolphthalein as an indicator. This difference is well established as being due to the ionization of silicic acid, either acidically or basically after the soda in the silicate has been neutralized by the strong acid. It was the intention of the experimenter to study this acid from the standpoint of the effect of certain variables, in the titration of sodium silicate with a strong acid, on the end points obtained.

The Preparation Of Symnetrical Tri Aryl Phosphines, George Brandes

Honors Theses

The purpose of this research project was the preparation of pure, symmetrical aromatic phosphines. These were to be used in dipole moment measurements for the calculation of the spatial arrangement of the carbon-phosphorus valence bond in the phosphines.

Concerning The Volume Change Resulting From The Sol-Gel Transformation Of Silicic Acid, Joseph Berg

Honors Theses

The subject matter of this thesis is concerned with a study of the volume change observed during the period of transition, from the sol to the gel state, of silicic acid.

The Reaction Of Diphenyl Cadium With Phosphorus Trichloride, Alfred Henry Case

Honors Theses

Any study of the stereochemistry of tricovalent atoms would necessarily involve members of the third and fifth periodic groups. Tertiary phosphines with heavy groups would be most valuable for this work since phosphorus seems to be better suited to exhibit asymmetry than any other element of the fifth group. (24) It is believed that the heavy groups would slow down the oscillations of the phosphorus atom and make possible the resolution of the optical isomers. The purpose of this investigation was a further study of this possibility, particularly the reaction of organo-cadmium compounds with phosphorus trichloride. In this case two …

A Study Of The Physical Properties Of Dibromdinitromethane And Its Reaction In Liquid Ammonia, Quintin Perry Cole

Honors Theses

Although there are at least half a dozen methods of preparing dibromdinitromethane given in the literature (1), the only physical properties mentioned are freezing and boiling points. Hence, after making the compound in order to study its reaction in liquid ammonia, data was obtained on other physical characteristic.

Setting Of Silicic Acid Gels In An Alkaline Medium, Frank James Alois

Honors Theses

As this piece of research essentially is a check Pomatti’s (1) only half as many points were taken. The time of set of silicic acid gels was carefully taken as the alkalinity of the medium was allowed to increase while the total volume of the gel was maintained constant. The runs were taken at three different temperatures so that temperature effects could be observed. Naturally enough, the pH’s of the gels were taken to place this work on quantitative basis. All pH measurements were accomplished by means of the colorimetric method which was first employed by Pomatti.

Co-Precipitation Of Manganese With Calcium Phosphate, Joseph Francis Collins

Honors Theses

This investigation was undertaken to study, in a preliminary way, the effect of precipitating tricalcium phosphate in the presence of manganous salts. Certain facts in relation to manganese deficiency in the diet of fowls, giving rise to perosis, makes the problem of interest in view of the work carried out at the Agricultural Experiment Station at Colorado State College. (3). It has been known for a long time that a diet high in calcium produces perosis which can be corrected by peritoneal injection of manganese. (1). C. D. Caskey and L. C. Norris (2) have found that in the presence …

A Study Of The Formation Of Gels Of Hydrated Zirconia, Walter Addison Fallon

Honors Theses

As silica gels and titania gels have been prepared and studied, it seemed logical that this investigation could be extended to zirconia gels. It has been the purpose of this research to determine the conditions necessary for the formation of zirconia gels and to initiate the investigation of their characteristics.

The Viscosity Of Silicic Acid Gels, William George Gormley

Honors Theses

Gelation is that phenomenon in which the entire system of both dispersion medium and dispersed substances solidify into an apparently homogeneous, solid mass. Upon the assumption that a jelly consists of myriads of hydrous particles that have become enmeshed into a network that entrains liquids, it follows that any substance should form a jelly when a suitable amount of a highly dispersed substance is precipitated provided that the particles absorb the dispersing medium very strongly. The process of gelation differs macroscopically from flocculation in that flocculation presents a separation of the dispersed substance. It has been proposed that gelation is …

Elasticity Of Silicic Acid Gel, Frederick Searles Clum

Honors Theses

When Robert Hooke published the “Description of Heliscopen” in 1676 the quotation above appeared on page 31 – translated – “The power of any spring is in the same proportion with the tension therein.” He formulated his theory from experimental results. It remained for Young, nearly a century and a half later, to interpret Hooke’s results in the generalized sense known today. Young defined the modulus, now known by his name, as the ratio of the force, causing elongation or compression, over the increment of expansion or contraction produced by it. When a proportion of matter is under the influence …

The Thermal Dissociation Of Barium Hydride, Edward Rynex Kane

Honors Theses

For the past fifteen years rather extensive investigations have been carried on in this laboratory concerning the thermal dissociation of the hydrides of the alkaline earth metals. During this oeruid considerable time has been spent in devising suitable apparatus for the work and improved methods of procedure. Each successive worker on the problem in this laboratory has contributed materially to some phase of the investigations, or at least suggested from his experience improvements to be made in existing methods.It is however, unfortuneate that, because of the nature of the course in which these investigations have been undertaken, time for research …

Dialysis Of Silicic Acid, Paul L. Merz

Honors Theses

This research was a quantative study of the polymerization of silicic acid molecules which occurred during the process of gel formation by the means of dialysis. The condensation of the silicic acid molecules, Si(OH)4, to form larger molecules of colloidal size, as suggested by the polysilicic acid fibriller theory, was investigated with membrances of known pore size at various stages of the reaction. Although filter and membrane action is only to a limited extent comparable with the action of a sieve, and is much more dependent on the absorption in the capillaries than the size of the pores, still a …

A Study Of Electromotive Force Over A Concentration Gradient, Sherman William Parry

Honors Theses

The problem was entered into to find out whether a gradual change of concentration over a distance of some centimeters would make any change in the electromotive force if substituted for a relatively sharp junction.

A Study Of The Physical Properties Of Bromopicrin And A Preliminary Investigation Of Its Reaction In Liquid Ammonia, George Bailey Stone

Honors Theses

The density and the index of refraction of bromopicrin were verified. New values were determined for the vapor pressure and the melting point. The surface tension and the viscosity were measured for the first time.

Prevention Of Bleeding By Coating Of The Pigment Particles, Angelo James Sederis

Honors Theses

The problem, essentially, is to conceive of a treatment which such a pigment could be given that will render it insoluble in those mediums in which it bleeds, without changing its characteristics in some other respect or making it so costly to manufacture that it would be impractical.

A Reorganization In The Continuity Of Subject Matter In Mathematics, Beryl E. Warner

Electronic Theses and Dissertations

This thesis considers a reorganization in the order of arrangement of certain topics in elementary and undergraduate mathematics; i.e. , arithmetic, algebra, plane geometry, solid geometry, trigonometry, analytic geometry, and calculus. Two terms important in the discussion are reorganization, the process of changing the relative position of topics or proofs in mathematics to an earlier or later place in the development of subject matter, and continuity, the logical order of topics arranged according to the need of one to explain the other.

The purpose of the thesis is two-fold; First, to show what arrangement of topics may be desirable; and, …

Transmission And Scattering Of Light By Silicic Acid Gel-Forming Mixtures, Warren De Sorbo

Honors Theses

In this investigation the transmission and scattering of light by the silicic acid gel forming mixtures have been studies during the process of gel formation in an effort to extend the work already done in this laboratory on the structure of silicic acid gels. The intensity of the transmitted and scattered light had been measured in terms of galvanometer deflections using a photoelectric tube circuit. An attempt had been made to utilize these results in elucidating the changes in size and number of the colloidal particles which take place in gel formation.

The Effect Of Silicia Concentration On The Time Of Set Of Constant Ph, Walter Otto Gerber

Honors Theses

When an aqueous solution of sodium silicate is treated with an acid, the mixture will become increasingly viscous and opalescent, and will finally set, it the silica concentration exceeds 2% and if the gel is not too acid or too alkaline. The time of set is determined by the pH, concentration of silica, concentration of certain foreign substances and the temperature.

The Evolution Of The Concept Of Axiom, William Fred Jones

Mathematics & Statistics ETDs

The field of knowledge known as mathematics is composed of the totality of mathematical systems. A mathematical system consists of a body of propositions known as the axioms. The concern of this paper is with the axioms; in fact, with the change which has taken place during the centuries in the ideas of mathematicians about the axioms.

New Formulae For The Determination Of The Yield Of A Bond, Marvin Roberts

Mathematics & Statistics ETDs

A written contract to pay a certain amount of money on a specified redemption date, and to pay equal periodical dividends, is called a bond from a mathematical standpoint. The principal mentioned in the contract is its face value, or par value. The amount redeemed, or the redemption value, is denoted by C, the dividends by D, and the principal by F. A bond is redeemed at a par if C and F are the same, and at a premium if C is greater than F. The divided rate, or bond rate, is the interest rate named in the bond. …

Upon The Asymptotic Representation Of Certain Entire Functions In Distant Portions Of The Plane, Abraham Franck

Mathematics & Statistics ETDs

The purpose of this paper is to study two particular entire functions which satisfy the conditions set up in a theorem due to Newsom. It is to be hoped that this report may be preliminary to the invention of a method which will lend itself toward the solution of certain general problems.

An Algebraic Treatment Of Diophantine Analysis, Anthony Andrew Aucoin

LSU Historical Dissertations and Theses

Diophantlne analysis, while an old subject, is a collection of special problems. The methods used are very varied and those used to solve one problem will not usually solve a second one. It is possible that this condition exists because Diophantlne analysis is usually considered as number theory. While some problems are problems in number theory, a large body of material may be developed by algebraic methods. In this thesis the methods of algebra are exploited. The material of this thesis divides itself into chapters naturally, according to the degree of the equations. Considered in order are quadratics, cubics, quartics, …

The Age-Hardening Of Aluminum With Mgzn2, Sidney E. Worthen

Bachelors Theses and Reports, 1928 - 1970

The purpose of this thesis is to investigate the age-hardening of aluminum with magnesium and zinc in such proportions as to conform to the compound MgZn₂.

Because of a lack of time and proper equipment, the only property investigated was the hardness as indicated by the Rockwell Superficial Hardness Tester.

The Investigation Of Different Variables In The Assaying Of Silver Cyanide Solution, Warren M. Mahan

Bachelors Theses and Reports, 1928 - 1970

The assaying of gold and silver cyanide solutions is by no means new. The first method of analysis which is given in the literature is an evaporation method by S. B. Christy in 1896. However, the fire assaying of gold and silver dates further back than this. There is a method of fire assaying for gold and silver given in literature as early as 1556 in Georgius, Agricola’s De Re Metallica book.

A Study Of The Electrical Conductivity Of Glass, Raymond William Barclay

Honors Theses

In past years, research has been done at Union College and other places on the electrical conductivity of glass. However, there seems to be a need of more quantitative work done on the subject. The purpose of this research is to give a deeper insight into the process; in particular, to investigate how the conductivity is affected by the replacement of sodium ions of the glass by various other ions.

Areal Geology Of The Post-Paleozoic Surface Of The Northwest Plains, William M. Broderick

Bachelors Theses and Reports, 1928 - 1970

Probably most of the area included in this report has been ex­amined to some extent by oil geologists, and most, if not all, of the important domes have been discovered and surveyed thoroughly. In parts of the area, the bedrock is covered by glacial drift or alluvium materi­al, but it is reasonable to believe that no new domal structure will be found. This means that surface examination alone will be insufficient in locating new oil fields, so future prospecting will be dependent, to a great extent, on studies of sub-surface stratigraphy.

A Study Of The Concentration Of A Copper-Zinc Ore., Kenneth L. M. Dodd

Bachelors Theses and Reports, 1928 - 1970

The ore under investigation in this thesis is a copper-zinc ore which came from the state of New Mexico. The exact location is unobtainable. The purpose of the investigation was to determine the most effective means of concentration of the valuable min­erals present in the ore.

The Geology And Mineralogy Of The Independence Mining District, Alan Kuhlman

Bachelors Theses and Reports, 1928 - 1970

From 1888 until 1893 the district was a booming mining camp. Seven stamp mills were running and ore was be­ing mined from the Independence, King Solomon, Poorman, Golden, Hidden Treasure and Crown claims. The town of Independence, which was on the Boulder River at the fork of Basin Creek, boasted a population of 400 people.