Physical Sciences and Mathematics Commons^™

Lincoln's Water Supply Problem

Conservation and Survey Division

No abstract provided.

A Study Of The Miscibility Of Various Liquids With Ethylene Glycol, Joseph J. Furlong

Bachelors’ Theses

Ethylene glycol is a compound possessing great interest, both from a theoretical and a practical standpoint. In its properties it lies midway between ethyl alcohol, C₂H₅0H, and glycerol, C₃H₅(0H)₃, the three compounds together forming an homologous series of alcohols.

A few years ago this substance was a scientific curiosity, produced solely by laboratory methods, and without any commercial value, although it had been known for more than sixty years. Today the manufacturers cannot produce enough glycol to satisfy the growing demand. The DuPont organization wanted to use it in a …

A Study Of Halowas Oil In Reference To Its Properties And Uses, Joseph F. Hoffman

Bachelors’ Theses

Halowax oil, specific gravity 1.25, is a thinly fluid mobile liquid, almost colorless, having a characteristic odor which is not unpleasant, heavy, or persistent. It is manufactured by the Halowax Corporation, a division or the Bakelite Corporation, at Wyandotte, Michigan.

The Development Of Colloid Chemistry, Oscar A. Bouise

Electronic Thesis and Dissertation

At first, it was a blur, that had shrouded a great mystery for ages and ages, until some seventy odd years ago. Then came Thomas Graham, who could not satisfy himself with merely viewing a blur as a blur. Being a scientist, he applied his mind experimentally, with the keen precision of any of the eminent astronomers using a telescope, and viewed more clearly this mist which hovered above the horizon . But maybe it was not due time fir the unfolding of the great secret, for Graham's focus only revealed a more complicated mist that had been seen before. …

The Development Of Colloid Chemistry, Oscar A. Bouise

Electronic Thesis and Dissertation

At first, it was as a blur, that had shrouded a great mystery for ages and ages, until some seventy odd years ago. Then came Thomas Graham, who could not satisfy himself with merely viewing a blur as a blur. Being a scientist, he applied his mind experimentally, which the keen precision of any of the eminent astronomers using a telescope, and viewed more clearly this mist which hovered above the horizon.

The Crystallation Of Estrogen-Binding Protein From Candida Albicans, Carl Francis Ackerbauer

Honors Theses

Cells of the type, Pt +, Metallic Salt, Incadescent Electric Lamp, were investigated for a study of the elctrolytic proceses whereby various ions entered and replaced others already in the glass. The medium has a high viscosity even to temperatures of several hundred degrees. The Study was confined to the nature of the changes and a possible quantitative result. Glass conducts electrolytically at all temperatures but more so at high temperatures, the Na + travels toward the cathode while the Sio--, not being a simple ion, and being very sluggish remains practically stationary. If the material, capable of supplying ions …

A Study Of Some Properties Of Silicic Acid Gels, William Joseph Rothemich Jr.

Honors Theses

When a solution of sodium silicate or water glass is mixed with an acid sooner or later a gel is formed. The speed of gelation is known to be dependent upon the concentration of water glass, the excess of acid or alkali present, agitation, temperature, and the kind of acid used. In my work with the setting of the gels these five points were kept as constant as possible.

The Determination Of Hydrogen Ion Concentration By The Electrometric Method, Evelyn Matthews Cook

Chemistry Honors Papers

This 12 page thesis examines the measurement of ion concentrations in solution using electrometric titration.

A Study Of The Dissociation Of Calcium Hydride, Kenneth Elwin Walker

Honors Theses

The calcium hydride equilibrium has been investigated by a number of men but the results obtained have been almost as diversified as the the number of workers. There is considerable doubt as to the mechanism of the dissociation and the compounds formed. Some workers claim evidence of the two hydrides while others found only the normal hydride, CaH2. In most of the previous work, the equilibrium has been more or less disturbed by the volatility of the calcium and the hydride and also the reaction of the calcium or the hydride on the quartz containers. In this work an attempt …

The Effect Of Current Density On The Efficiency Of A Brass Cathode In Chromium Plating, Anton E. Budner

Bachelors’ Theses

That chromium could be electrodeposited from chromic acid baths, has been an accomplished fact for over 70 years. However, only in the past few years, has the mechanism of the process been sufficiently understood to permit chromium plating on a commercial basis. Because of the properties and advantages of this particular deposit, tremendous interest and activity has developed in this practically new field. Numerous patents have been granted, but relatively little specific scientific information has been published. Much work can yet be done towards the development of this field. It is the problem of this thesis to study the effect …

A Study Of Various Metallic Electrodes In Potentiometric Titrations, Louie Boncyk

Bachelors’ Theses

The significance of ion concentrations has been the subject of many investigations during the last few years. The results obtained have demonstrated without question the unlimited possibilities existing for laboratory and industrial applications of ion concentration measurements. It has been shown in many instances biological activity, fermentation, and filtration are influenced to a large extent by variations in the H-ion concentration. In addition, the way is open for improved control and accuracy in the many neutralization problems encountered in the laboratory. The lack of suitable electrodes has greatly retarded the practical applications of H-ion measurements to plant industrial problems. The …

The Distillation Curves Of Several Liquid Binary Stystems Of Various Aliphatic Alcohols With Benzene And Toluene, Jack Philip Eigen

Bachelors’ Theses

The object of this thesis is to determine the distillation curves of several liquid binary systems and to locate any constant boiling mixture by means of graphical representation.

Such an investigation has a commercial aspect. A research of this kind is valuable to the paint industry, and also for any industry interested in preparing very pure liquids by distillation. The following investigation limits itself to a study of. boiling point curves of mixtures of various aliphatic alcohols with benzene or toluene. These systems are reputed to have a minimum boiling which would be very valuable in the paint industry as …

An Analysis Of Pecan Nut Shells, Marie I. Bond

Bachelors’ Theses

This thesis deals with the methods or analysis or pecan nut shells and an attempt to identify the extracted pigment.

At present nut shells are waste products. This makes their study interesting from a commercial standpoint. In view of the fact that very little work of this kind has been done, nut shell analysis offers interesting research problems as well as excellent practice in the technique or organic analysis.

Such great interest is now being taken in plant pigments that, a thorough investigation of the red pigment yielded by pecan nut shell would be an appreciated contribution to science.

Experiments On The Effect Of Current Density Of The Porosity Of Chromium Plated Steel, William G. Hilger

Bachelors’ Theses

The application of chromium plating in industry has grown out of a series of experiments conducted in the past few years. However as early as 1854, research was carried on in this field, but it was only in the years 1920 - 1925, that the chromium plating industry became an actual fact. From then on it has progressed very rapidly. In the present day chromium is applied for two main purposes: (a) to produce a permanent and decorative effect and, (b) to prolong the life of mechanical parts subjected to unusual conditions of wear or temperature. The electrodeposition of chromium …

A Determination Of The Solubility Curves Of Several Liquid Ternary Systems And The Effect Of Change Of Temperature On These Curves, Samuel Klieger

Bachelors’ Theses

The following paper treats of the solubility relations found in ternary systems. The components of the system are, the lower alcohols, Benzene or toluene and water. The work consists of a determination of the solubility curve of the three components in various proportions. The influence of temperature on the solubility is so studied.

The Amount And Identification Of Amyl Alcohols In A Commercial Mixture Of Pentanols, M. Eugenia Eberhard

Bachelors’ Theses

Casing head gasoline obtained from natural gas yields five commercial products. One of these is a mixture of amyl alcohols. As treated by the Sharples Company, West Virginia, pentane is separated and treated with chlorine. Three chlorine derivatives are produced. These are treated with caustic soda and may f'orm eight possible amyl· aloohols~1 The products of the normal pentane, only, are the subject matter of this thesis.

On Polynomial Solutions Of A Class Of Linear Differential Equations Of The Second Order, W. C. Brenke

Department of Mathematics: Faculty Publications

Certain well known polynomials have a number of common properties. They arise as coefficients of tⁿ in the expansion of a generating function ; they may be obtained by means of orthogonalization of a set of functions xⁿg(x) when the function ρ(x) = g²(x) and the interval are properly chosen ; they may be regarded as polynomials which become orthogonal when multiplied by a proper factor g(x) ; they satisfy a certain type of difference equation ; they satisfy a certain type of differential equation. The results …

Matrices Whose Characteristic Equations Are Cyclic, T. A. Pierce

Department of Mathematics: Faculty Publications

One of Sylvester's theorems f on matrices states that if the characteristic equation
(1) | M - λI| = f(λ) = 0
of a square matrix M has the roots λ₁, λ₂, … , λ_n, then the characteristic equation
(2) | φM - ρI| = = g(ρ) = 0
of any integral function of M, namely, φM, has the roots ρ_i = φ (λ_i), i = 1, 2, … , n. In this note an isomorphism is shown to exist between …

History Of Applied Geometry, Evelyn Jackson

Electronic Thesis and Dissertation

Mathematics: Just what does the word mean to us? After a moment of thought many different meanings may present themselves to our minds. At first we are inclined to say that the word mathematics covers a vast field. We are justified in so thinking because mathematics embraces a wide scope of study. Were we to say that it is a science we should place it in its proper genius, for it is truly a science of numbers and space. However, could not the science be the art of calculation or the art of computation?

Amebelodon Sinclairi Sp Nov., Erwin H. Barbour

Bulletin of the University of Nebraska State Museum

Amebelodonts are so new and so rare that even fragmentary facts relative to the group seem worth publishing. The specimen under consideration is a mandibular tusk found on the farm of Mr. A. S. Keith, Freedom, Frontier County, Nebraska, on the Morrill Geological Expedition of 1928, and is numbered 1-17-7-28, S. and L., the collectors being Bertrand Schultz and John LeMar, both of the class of 1931, the University of Nebraska. The formation was Late Pliocene or Pleistocene.

The Effect Of Soil Moisture On The Establishment Of Spruce Reproduction In British Columbia, Percy Munson Barr

Yale School of the Environment Bulletin Series

Most of the field work has been conducted at the Aleza Lake Forest Experiment Station, in the valley of the Upper Fraser River, near the city of Prince George [British Columbia].

I. A series of twelve permanent plots (numbers 1 to 12) was established for the purpose of studying the occurrence of natural reproduction on various types of seed bed, under different densities of overwood and on northern and southern aspects. 2. A second series of four plots (numbers 17 to 20) was laid out in logged-off land for the purpose of studying the survival and growth of advance reproduction …

First Forms Of Art : Pt.2. Crystal Forms, Hans Carl Perleberg, T. H. Schenk

Nature

2 v. : 80 leaves of plates ; 36 cm. Cover title. In portfolio. "This collection of 156 different forms of crystals was produced by microphotography. Professor T.H. Schenk, of Austria, experimented several years in order to bring about interesting designs through the action of acids on various metals..."--Pt. 2., cover page verso. Pt. 1. Nature -- Pt. 2. Crystal forms. Library has Pt. 2 only ; Plates: 1-20.

The Utility Of Mathematics, Jack R. Dunn

Electronic Thesis and Dissertation

No abstract provided.

History Of Applied Geometry, Evelyn Jackson

Electronic Thesis and Dissertation

No abstract provided.

Geological Report Of The Shoshone Region, Idaho, Eldred R. Harrington

Earth and Planetary Sciences ETDs

This report sets forth the results of a five year study of the Shoshone region, Idaho. The region is situated in south-central Idaho on both sides of the Snake river. The southern and larger part of the region lies in the Columbia River Plateau province while the northern and smaller part of the area lies in the Northern Rocky Mountains province.

An areal geology map and several cross-sections accompany the report which is further illustrated by numerous photographs.

A Syllabus Of Line Geometry, Alice Willmarth

University of the Pacific Theses and Dissertations

In the study of advanced geometry, we shall deal with a certain important relation between pairs of figures in space, and also between their properties. There are two distinct parts to analytic geometry, the analytic work and the geometric interpretation. Two systems of geometry, depending upon different elements with the same number of coordinates, will have the same analytic expressions and will differ only in the interpretation of the analysis. In such a case it is often sufficient to know the meaning of the coordination and the interpretation of a few fundamental relations in each system in order to find …

Test 176: Oliver Hart-Parr Row Crop, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 183: Oliver 90, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Iron And Cobalt Salts As Catalysts In The Oxidation Of Sodium Sulfite By Free Oxygen, Loren C. Bryner

Theses and Dissertations

The present investigation was carried out to show the catalytic effect of some iron and cobalt salts on the oxidation of sodium sulfite solutions by free oxygen. The rate of reaction was determined by measuring the volume of water required to replace the absorbed oxygen. A photograph and diagrammatical arrangement of the apparatus is given, (Page 14). From the preliminary experiments it was found that the rate of oxidation of sodium sulfite solutions is dependent upon concentration, and speed of the shaker.

First Annual Report On The Geology Of The State Of Maine, Lucius H. Merrill, Edward H. Perkins

Maine Collection

First Annual Report on the Geology of the State of Maine by Lucius H. Merrill, State Geologist and Edward H. Perkins, Assistant Geologist, Augusta, 1930.

Articles: Maine Granites / Report on Feldspar Quarries Visited Aug. 21-24, 1929 / Coal / Petroleum and Natural Gas in Maine / The Minerals of Maine / Minerals of Maine Index, By Mineral Names / Minerals of Maine, Index by Towns / Minerals Found at Bennett's Quarry Buckfield, Maine / List of Minerals Found at Newry, Maine / List of Minerals Found in Rumford, Maine / The Natural History of Maine Minerals (Perkins) / …