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Articles 69511 - 69540 of 69926

Full-Text Articles in Physical Sciences and Mathematics

The Reptiles Of Cherokee County, Kansas, Myron Alec Hurd Jul 1936

The Reptiles Of Cherokee County, Kansas, Myron Alec Hurd

Electronic Theses & Dissertations

Cherokee County has an area of 585 square miles. The greater part is covered with hydrophytes and mesophytes, but there are some Xerophytic areas. A large part of its area is covered with typical prairie grassland. Thickets of plum, sumac, persimmon, hawthorne, blackberry, and buck brush occur in pastures and wastelands. Along the streams may be found the elm-ask-oak assocations and other plants. Along the embankments may be found blackberry, sumac, and wild rose. Surrounding the ponds and marsh areas are rushes, reeds, button willows, and willows.

The mean annual temperature is 56 degrees fahrenheit. The three summer months average …


A Study And Application Of The Process Of Supergene Enrichment Of Silver Ores., Arthur C. Verling Jun 1936

A Study And Application Of The Process Of Supergene Enrichment Of Silver Ores., Arthur C. Verling

Bachelors Theses and Reports, 1928 - 1970

In many deposits of silver ores the grade of the ore de­creases considerably a few hundred feet below the surface. It is believed that in many cases the better ores owe their richness in part to the process of sulphide enrichment. It is recognized, however, that many rich silver ores are hypogene deposits that have been affected very little, if any, by processes of enrichment.


Chemical Analyses Of Some Oil-Well Waters Of Russell, Ellis And Trego Counties, H. Everett Runyon May 1936

Chemical Analyses Of Some Oil-Well Waters Of Russell, Ellis And Trego Counties, H. Everett Runyon

Master's Theses or Doctor of Nursing Practice

Considerable work dealing with analysis of oil-well waters of other areas has been published, but to the knowledge of the author, none has been published dealing specifically with the waters of this area. While the waters dealt with in this paper are not far different from the waters of the Midcontinent area as a whole, there are certain differences which are noticeable. For instance strontium is found in the top waters of the Eldorado, Kansas field. None has been found in this area. The sulphate content of the top water here is very high. Both apparently cause trouble at times. …


The Extraction Of Manganese From Manganese Flue Dust., John Raymond Moore May 1936

The Extraction Of Manganese From Manganese Flue Dust., John Raymond Moore

Bachelors Theses and Reports, 1928 - 1970

It is estimated that 90 to 95% of the world’s consumption of manganese is used in the steel industry in the form of either ferromanganese or spiegeleisen. The remainder is used in the form of either salts or oxides, chloride, dioxide and monoxide.


A Study Of The Effect Of Oxygen On The Rate Of Dissolution Of Gold In Cyanide Solutions., John A. Cook May 1936

A Study Of The Effect Of Oxygen On The Rate Of Dissolution Of Gold In Cyanide Solutions., John A. Cook

Bachelors Theses and Reports, 1928 - 1970

The accepted chemical reactions in the dissolution of gold by cyanide solutions require the presence of gold, cyanide, water, and oxygen. The importance of dissolved oxygen in cyanide solutions as a factor is recognized by those familiar with cyanidation. Manufacturers of cyanidation equipment realize the necessity of oxygen, as shown by the appliances they have developed which are attached to the agitators in order to saturate the cyanide solutions with air.


The Control Of The Grain Size Of Zinc, Oswald J. Wick May 1936

The Control Of The Grain Size Of Zinc, Oswald J. Wick

Bachelors Theses and Reports, 1928 - 1970

The use of zinc as a structural metal has been militated against by two of its properties, namely, its low tensile strength and its susceptibility to grain growth. The importance of these factors can be appreciated when it is realized that the tensile strength of coarsely crystalline cast zinc is 4,000 pounds per square inch, while finely crystalline cast zinc has a tensile strength of 12,000 pounds per square inch.


Contact Metamorphism In The Highlands, Frank Trask Jr. May 1936

Contact Metamorphism In The Highlands, Frank Trask Jr.

Bachelors Theses and Reports, 1928 - 1970

On the southern margin of the Boulder Batholith, about twenty miles south of Butte in the Highland Mountains, there are many miles of contact between the igneous and sedi­mentary rocks. As two kinds of igneous rocks and many diff­erent kinds of sedimentary rock are present, it is an excell­ent place for the study of contact metamorphism.


A Preliminary Study Of Montana Copper - Nickel Ore, J. Argall Mcallister May 1936

A Preliminary Study Of Montana Copper - Nickel Ore, J. Argall Mcallister

Bachelors Theses and Reports, 1928 - 1970

Deposits of sulfides, containing nickel and copper with associated platineferous minerals occur in the Stillwater Igneous Complex. This is a group of unusual igneous rocks situated in Stillwater and Sweetgrass counties in Montana.


Geology And Ore Deposits Of The Golden Era And Goldfinch Mines, Argenta Mining District, Montana., Glenn C. Johnston May 1936

Geology And Ore Deposits Of The Golden Era And Goldfinch Mines, Argenta Mining District, Montana., Glenn C. Johnston

Bachelors Theses and Reports, 1928 - 1970

This report includes the results of geological investigation of a small area in the northern part of the Argenta mining district. Approximately two square miles were mapped. The underground working of the three mines only were accessible: the Goldfinch. Golden Era, and Mayday mines.


The Effects Of Lime On The Amalgamation Of Gold., Rollien R. Wells May 1936

The Effects Of Lime On The Amalgamation Of Gold., Rollien R. Wells

Bachelors Theses and Reports, 1928 - 1970

An amalgam is an alloy of mercury with other metals, and amalgamation is the art of making or forming amalgams. In metallurgical language the word is limited to the means adopted for the recovery of gold and silver from their ores by the use of mercury.


Some Properties And Applications Of Symmetric Functions, Marie C. Kniewel May 1936

Some Properties And Applications Of Symmetric Functions, Marie C. Kniewel

Bachelors’ Theses

The word symmetry suggests that more fundamental aspect of all being, unity. In mathematics as in all other sciences, there is no going without having glimpsed something of that unity. Given even a glimpse, the wayfarer on the path toward mathematical truth, finds the traveling made, not easy, but more certain.


A Study Of The Temperature Of Gelation And Solubility Range For Paraffin Waxes In Several Solvents, Stanley Francis Gebarski May 1936

A Study Of The Temperature Of Gelation And Solubility Range For Paraffin Waxes In Several Solvents, Stanley Francis Gebarski

Bachelors’ Theses

In organic literature and text books a certain melting point of paraffin is taken as indicating a certain range of paraffin hydrocarbons and the discussion terminated at that point.


A Comparison Of Ths Digestive Powers Of Trypsin And Papain On Casein And The Effect Of Certain Mild Antiseptics On These Powers, Joseph E. Steker May 1936

A Comparison Of Ths Digestive Powers Of Trypsin And Papain On Casein And The Effect Of Certain Mild Antiseptics On These Powers, Joseph E. Steker

Bachelors’ Theses

The purpose of this thesis is to study the effect of certain mild antiseptics, such as Benzoic acid, Boric acid, salicylic acid, Phenol, Cresol, Thymol, on the digestive action of the enzymes Trypsin and Caroid (papain). A thorough perusal of the literature reveals only a small amount of data dealing with the influence of common antiseptics on enzyme action. Because of the important uses of enzymes in industry and the need of antiseptics for protective action, this problem is of great importance. The author wishes to acknowledge the kind cooperation of Dr. John R. Koch, Head of the Department of …


Marital And Population Composition Of Sheboygan County January 1, 1925 To December 31, 1936, Rhudolph John Ploetz May 1936

Marital And Population Composition Of Sheboygan County January 1, 1925 To December 31, 1936, Rhudolph John Ploetz

Bachelors’ Theses

This is a compilation of the marriage and the population figures of Sheboygan County, in the state of Wisconsin. The author has made a survey of both the rural and urban areas. Including the county figures, are the state and federal statistics for an analysis and comparison on the problems relative to the subject. The table of contents giving the title and page of tables, is intended to be of great value to the reader, in that just a particular table wanted is designated and well-outlined. Regarding a lengthy explanation for each or any one of the tables is really …


A Study Of The Decomposition Potentials Of A Commercial Gluconic Acid Bath, Roman L. Pozorski May 1936

A Study Of The Decomposition Potentials Of A Commercial Gluconic Acid Bath, Roman L. Pozorski

Bachelors’ Theses

The study of electrochemistry is not only fascinating and worthwhile, but essential to the student of chemistry in the understanding of many theories and chemical phenomena. Though electrochemistry is still in its infancy, numerous substances are prepared electrolytically in industry. It is reported that about 15% of all the chemical goods manufactured are prepared by electrochemical industries. Of the various types of studies, in electrochemistry, the one which appears to be most appealing is the analysis of chemical reaction sin which electrochemical methods are used. The determination of decomposition potentials is one of these methods. A knowledge of decomposition values …


The Influence Of Ph On The Activity Of Trypsin And Papain (Caroid) As Measured By A Modification Of The Northrup Gravimetric Casein Method, Frank W. Dragan May 1936

The Influence Of Ph On The Activity Of Trypsin And Papain (Caroid) As Measured By A Modification Of The Northrup Gravimetric Casein Method, Frank W. Dragan

Bachelors’ Theses

Hydrogen ion concentrations have long been recognized as an essential factor in many biochemical processes.

The influence of hydrogen ion concentration upon enzyme activity has been of especial importance as proteolytic enzymes are rapidly gaining in use in various industries, principally the tanning industry.


The Solution Of The Quartic Equation In One Variable, Jack W. Bril May 1936

The Solution Of The Quartic Equation In One Variable, Jack W. Bril

Bachelors’ Theses

The purpose of this thesis is to discuss two of the foremost solutions of the quartic equation---Descartes' method and Ferrari's method. Most of the ideas were garnered from books on the theory of equations. The historical material was obtained from histories of mathematics.


The Geology Of A Part Of The Bear River Range And Some Relationships That It Bears With The Rest Of The Range, Vic E. Peterson May 1936

The Geology Of A Part Of The Bear River Range And Some Relationships That It Bears With The Rest Of The Range, Vic E. Peterson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The structure of the western three or four miles of the Bear River range east of Logan, Utah, has many times been alluded to in papers written locally on Cache Valley and the related ranges. There has not however, ever been, to the author's knowledge, an investigation made of this portion of the range for the express purpose of determining its exact structure. Although the area specifically covered by this present investigation is greatly inadequate to base the whole west range structure on, the author believes that the facts brought to light by the specific study of this area, added …


The Vitamin D And Provitamin D Content Of Some Varieties Of Utah Wheat, Harold M. Nielsen May 1936

The Vitamin D And Provitamin D Content Of Some Varieties Of Utah Wheat, Harold M. Nielsen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Cereal grains were known to be notably deficient in the anti-rachitic principle even before the discovery of vitamin D. Clinicians had associated a type of rickets of infancy, characterized by an over-weight, flabby, bowlegged condition, with a diet consisting mainly of cereals. Mellanby (1) in 1921 concluded that this type of rickets is induced by overfeeding with carbohydrates. He also showed in the same report, however, that oatmeal, although it contains less carbohydrates than the other grains tested, possesses a special tendency toward rachitogenesis.


Geology Of Some Gold Deposits Of Montana, Leo Edwin Efraimson Apr 1936

Geology Of Some Gold Deposits Of Montana, Leo Edwin Efraimson

Bachelors Theses and Reports, 1928 - 1970

Gold is one of the rarer metals in nature, and chemically it is one of the most inactive. Gold forms stable, natural compounds with few other elements, and only with metals.


The Hyperbola, Mary Aquin Miller Apr 1936

The Hyperbola, Mary Aquin Miller

Bachelors’ Theses

This thesis is by no means an exhaustive presentation of the subject "The Hyperbola" or of the many and varied properties connected with this conic section and its associated parts. The aim in writing this paper has been to give a general outline of the history of the development of the hyperbola, to show the various constructions of it, and, with this as a basis, to show the relation between the hyperbola and its connected parts.


A Short Study Of Laplace's Equation, Sidney Teweles Jr. Feb 1936

A Short Study Of Laplace's Equation, Sidney Teweles Jr.

Bachelors’ Theses

Perhaps if I set forth my original inspiration for this thesis, the reader will be better able to understand the reason for the apparent limitations of treatment. In my study of differential equations, I had the task set before me of presenting a discussion of Laplace's equation to the class. A seemingly easy matter turned out to be quite difficult for the reason that most texts make but brief use of Laplace's equation. Thus in a mathematics book reference will be made to Laplace's equation simply as example of a mathematical process. Some of these processes are the change of …


The Minerals Of New Mexico, Lee Mcguinness Jan 1936

The Minerals Of New Mexico, Lee Mcguinness

Earth and Planetary Sciences ETDs

Inorganic bodies known as minerals make up, either in whole rock-masses or in isolated form, the material of the upper crust of the earth. Through the evidence furnished by this study of meteorites, we also infer that other bodies in the universe are made up of minerals, or at least those portions of them which are represented by meteorites.

Since minerals are, then, important in making up the observable part of the earth, a study of them is importance in any study of the earth. Because the variety of minerals occurring in New Mexico is large, it will be of …


A Metallographic Study Of Primitive Copper Work., John A. Alley Jan 1936

A Metallographic Study Of Primitive Copper Work., John A. Alley

Bachelors Theses and Reports, 1928 - 1970

The field of archaeology and that of metallurgy appear to be widely separated and in no way related. Work done in recent years, however, tends to show that, in many ways, the metallurgist can supplement and enhance the information gain­ed by the archaeologist, at least in regard to those objects which have been made of metal.


Semi-Commercial Distillation Of Ternary Mixtures : Paper I. Glycerin-Ethyl Alcohol-Water, Rochus Cornelius Stahl Jan 1936

Semi-Commercial Distillation Of Ternary Mixtures : Paper I. Glycerin-Ethyl Alcohol-Water, Rochus Cornelius Stahl

Electronic Theses and Dissertations

No abstract provided.


A Study Of Methods Of Determining The Rate Of Acid Hydrolysis Of Wheat Gluten, Angus V. Honrickson Jan 1936

A Study Of Methods Of Determining The Rate Of Acid Hydrolysis Of Wheat Gluten, Angus V. Honrickson

University of the Pacific Theses and Dissertations

Because of the nutritious value of sodium glutamate and its meat-like flavor, which is very pleasing to most people, and hence its demand if it were properly promoted, and because of the abundance of protein in accessible form for its manufacture, it is only reasonable to assume that if the optimum conditions of protein hydrolysis were found, the manufacturing could be made a highly successful enterprise. it was the purpose of this research to investigate the methods by which the hydrolysis of wheat glutes can do conveniently followed in order to determine the efficiency of reactions run under specific conditions.


An Investigation Into The Bromate Method Of Manganese Determination, Ray A. Bunday Jan 1936

An Investigation Into The Bromate Method Of Manganese Determination, Ray A. Bunday

Electronic Theses and Dissertations

Throughout the history of research in the science of Chemistry the problem of the quantitative determination of manganese has always been a perplexing one. The results have usually fallen short of the theoretical value and has necessitated the application of an empirical factor(1) which is always undesirable to the true research scientist, if not to the commercial analyst.


The Sorption Of Fluoride Ion With Special Reference To Fluoride Removal From Potable Waters, Phillip W. West Jan 1936

The Sorption Of Fluoride Ion With Special Reference To Fluoride Removal From Potable Waters, Phillip W. West

Theses and Dissertations

The recent discovery that even very small concentrations of fluorides in drinking waters are sufficient to cause the serious dental dystrophy commonly known as mottled enamel, has around widespread interest and concern. Federal and State surveys have been conducted to determine the geographical distribution of the malady, and the fluoride contents of water supplies.

County dental surveys, conducted by the United States Public Health Department with the cooperation of local dentists, have located the regions throughout the country where mottled enamel is endemic and among these localities is an area in southeastern North Dakota and adjacent territory in South Dakota …


A Study Of The Oxidation Of Aqueous Sulfide Solutions By Chlorine., Lester Cole Faulkenberry Jan 1936

A Study Of The Oxidation Of Aqueous Sulfide Solutions By Chlorine., Lester Cole Faulkenberry

LSU Historical Dissertations and Theses

No abstract provided.


Amherst Township, A Regional Study, Ruth C. Rockwood Jan 1936

Amherst Township, A Regional Study, Ruth C. Rockwood

Honors Papers

Amherst township was selected as the area to be studied because it was believed to be as nearly representative of the aspects of land and life in north central Ohio as any small area that could be found. It is located on a section of the Lake Plain which has somewhat parallel lines formed by three beach-ridges, and on the northern edge of the Glaciated Plain. Then, the quarrying of the world famous Berea sandstone gives somewhat of an individual aspect to the small towns within Amherst township.

The purpose of the paper is to describe the physical landscape, and …