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Articles 715591 - 715620 of 716676
Full-Text Articles in Entire DC Network
Investigation Of Hindered-Settling Ratio Of Galena And Quartz In Air, John Sloan Stewart, Ralph Daniel Killian
Investigation Of Hindered-Settling Ratio Of Galena And Quartz In Air, John Sloan Stewart, Ralph Daniel Killian
Bachelors Theses
"The object of this Thesis is to determine the hindred sic -settling ratio in air of Galena and Quartz, and to verify if possible the result of the work done in 1909 by W. D. Clark and R. W. Watson"--Problem, page 1.
A Study Of Some Assay Problems, Walter Dobbins, Charles Weaver Traughber
A Study Of Some Assay Problems, Walter Dobbins, Charles Weaver Traughber
Bachelors Theses
"The object of this thesis is to work out some assay problems. Each problem is taken up independently, and may be considered as having no connection whatever with the others"--Introduction, page ii.
A Comparison Of Various Methods Of Assaying Cyanide Solutions For Gold, Theodore Saunders Dunn
A Comparison Of Various Methods Of Assaying Cyanide Solutions For Gold, Theodore Saunders Dunn
Bachelors Theses
"Although there has been a great deal written on the different methods of assaying cyanide solutions and new methods are being devised constantly there has been very little said as to the relative merits of the methods in use. An attempt has therefore been made in this paper to compare several of the methods now used"--page 1.
A Study Of The Roubidoux In The Vicinity Of Rolla, John Elmer Schultz, William Grover Branham
A Study Of The Roubidoux In The Vicinity Of Rolla, John Elmer Schultz, William Grover Branham
Bachelors Theses
"The purpose of this investigation was to discover the character of the texture and structural features of the Roubidoux within the area and the probable agencies which worked to produce them"--Purpose of Investigation, page 3.
Notes On The Precipitation Of Gold From Cyanide Solution, Charles Adrian Burdick, Harry Wade Connelly
Notes On The Precipitation Of Gold From Cyanide Solution, Charles Adrian Burdick, Harry Wade Connelly
Bachelors Theses
"This work was to determine the Potassium Cyanide and the Zinc consumed in the precipitation of Gold from cyanide solutions by zinc dust"--page 1.
The Effects Of Co₂, So₂, And Temperatures On Blende Roasting, Monroe Farrar
The Effects Of Co₂, So₂, And Temperatures On Blende Roasting, Monroe Farrar
Bachelors Theses
"This work deals with the effect which different temperatures and different percentages of CO₂ and SO₂ have on the speed of roasting of zinc sulphide. I selected sphalerite from the Joplin district"--Page 1.
Chemical Analyses Of Special Tool Steels, Elmer List
Chemical Analyses Of Special Tool Steels, Elmer List
Bachelors Theses
No abstract provided.
An Investigation Of Certain Methods For The Determination Of Gold In Cyanide Solutions, James Joseph Bowles
An Investigation Of Certain Methods For The Determination Of Gold In Cyanide Solutions, James Joseph Bowles
Bachelors Theses
"Some questions having been raised as to the reliability of the various methods for the quantitative determination of gold in cyanide solution, this work was undertaken with the view of determining the relative accuracy and convenience of these methods"--page 2.
Transportation Of Chert In Launders, Louis Joseph Porri, John Lyle Pickering
Transportation Of Chert In Launders, Louis Joseph Porri, John Lyle Pickering
Bachelors Theses
"Water is often carried from place to place in artificial channels, such as troughs, aqueducts, ditches and canals. A launder is, specifically speaking, a trough, and it is with this that this article will treat. It is the purpose of this investigation to discover, if possible, first, the maximum carrying power of water when transporting chert; second, to find the relation existing between the velocities of different sized chert"--Introduction, page 1.
Geology In The Vicinity Of Palmer, Mo., Alfred Nicks Detweiler, John Kavanaugh Forman
Geology In The Vicinity Of Palmer, Mo., Alfred Nicks Detweiler, John Kavanaugh Forman
Bachelors Theses
"This area has been of minor importance in the production of ore on a commercial scale, the ore mined being residual in clay in openings occuring sic in dolomite and with chert, all near the surface, the mining being done by individuals who felt disposed to sink a shaft on some supposedly mineralized spot in the hope of uncovering a few tons or ore. Mining operations have been carried on intermittently for more than a century, so we are told, the early miners breaking the rock by first heating it with a wood fire, and then suddenly cooling it with …
Effects Of Immigration, Iver Andrew Acker
Effects Of Immigration, Iver Andrew Acker
Theses and Dissertations
No abstract provided.
A Study Of The Cutaneous Method Of Von Pirquet And The Percutaneous Method Of Moro And Their Comparison With The Other Tuberculin Tests In The Diagnosis Of Tuberculosis, Fu-Chun (Fu Ching) Yen, Yan Fuqing
A Study Of The Cutaneous Method Of Von Pirquet And The Percutaneous Method Of Moro And Their Comparison With The Other Tuberculin Tests In The Diagnosis Of Tuberculosis, Fu-Chun (Fu Ching) Yen, Yan Fuqing
Yale Medicine Thesis Digital Library
This thesis is based on a comparative study of the Von Pirquet tuberculin skin test and the Moro per cutaneous tuberculin test used in the diagnosis of tuberculosis.
Stress Of Romance Words In Chaucer's Prologue To The Knight's Tale., Helen S. Ward
Stress Of Romance Words In Chaucer's Prologue To The Knight's Tale., Helen S. Ward
Electronic Theses and Dissertations
The effect of the Norman-French Conquest on the vocabulary of the English language was profound. Prior to the Twelfth Century the language contained but few word forms foreign to the Old English. The vocabulary of the Eleventh Century contained about thirty words of French origin and these must have come into the language previous to the conquest.
Report On A Portion Of The Soda Springs Mining District In Bernalillo County, New Mexico, Edmund Ross
Report On A Portion Of The Soda Springs Mining District In Bernalillo County, New Mexico, Edmund Ross
Earth and Planetary Sciences ETDs
No abstract provided.
The Early Missionary Work Of The French Jesuits In North America., Edward Thomas Poulson
The Early Missionary Work Of The French Jesuits In North America., Edward Thomas Poulson
Electronic Theses and Dissertations
There are perhaps but few passages in history that are more striking than those which tell of heroic efforts of the early French Jesuits to convert the Indians of North America. Many of these efforts are full of dramatic and philosophic interest, and they also bear strongly upon the political destinies of America. While the small young colonies of England still clung feebly to the shores of the Atlantic, events, almost wholly unknown to them, that would eventually have great bearing upon their future, were in progress in the very heart of the continent, the main participants being the French …
Bacteria In Relation To Every Day Life., Inga Werness
Bacteria In Relation To Every Day Life., Inga Werness
Electronic Theses and Dissertations
It is to be noticed that if there be any marshy places, certain animals breed there, which are invisible to the eye and yet getting into the system through the mouth and nostrils cause serious disorders." This quaint observation is taken from a manuscript written over two thousand years ago, showing that bacteria even if not seen, were living and active. Latin writers of about the same time recorded a relation between insects and malaria which has but lately been proved and explained. The infectious character of leprosy has long been recognized, since the ancient Hebrews caused the isolation of …
A Study Of Some Problems In Assaying, Aaron Max Shah
A Study Of Some Problems In Assaying, Aaron Max Shah
Bachelors Theses
"It is known that the lead button which we obtain from fire assay for silver does not represent the true value of the ore. There is always a loss of silver. To investigate the effect of varying the fluxes on the loss in silver is the object of the first part of this thesis...Silver ores often contain copper, part of which, during the fusion, enters the lead button, causing trouble during cupellation, since it must be done at a high temperature. It is, then, important to keep copper out of the lead button. The presence of litharge in the fusion …
The Nature Of Moral Law, W. G. Colgrove
Chemical Analysis Of Foods And Their Adulterants: Being An Investigation Into The Nature, Relative Value And More Common Forms Of Adulterations Of Certain Foods, William Samuel Long
Chemical Analysis Of Foods And Their Adulterants: Being An Investigation Into The Nature, Relative Value And More Common Forms Of Adulterations Of Certain Foods, William Samuel Long
Chemistry Honors Papers
This 26 page thesis examines the composition, natural variations, and artificial variations of various foods.
Geology Along The St. Louis And San Francisco Railroad From Rolla To Newburg, Victor H. Hughes
Geology Along The St. Louis And San Francisco Railroad From Rolla To Newburg, Victor H. Hughes
Bachelors Theses
"The area, the geology of which, constitutes the subject of this Thesis, lies between the towns of Rolla and Newburgh sic , in Phelps Co., Missouri, and is contiguous to the St. Louis & San Francisco Railroad for its entire distance"--Text of Thesis, page 1.
The Design Of A Dam And The Investigation Of A Water Supply For The City Of Rolla, Missouri, Frank Xavier Nachtman, Ernst Lorenze Chamberlain
The Design Of A Dam And The Investigation Of A Water Supply For The City Of Rolla, Missouri, Frank Xavier Nachtman, Ernst Lorenze Chamberlain
Bachelors Theses
"The object of this paper is to investigate a means of supplying the City of Rolla with better water at a reasonable a price as possible. The elevation and distance of the supply from the city were very important factors,also the most economical position for the dam was to be considered. After examining several drainage basins with the above purposes in mind we selected one just west of the City on account of its convenience and high elevation. The watershed includes an area of ever eight hundred acres and is divided into two parts which come together in a narrow …
Radiation Losses In Metallurgical Furnaces, Frank Richard Loveridge
Radiation Losses In Metallurgical Furnaces, Frank Richard Loveridge
Bachelors Theses
"The conduction and radiation of heat are of great importance in metallurgy. Metallurgical operations require, in the great majority of cases, temperatures above those of normal atmospheric conditions. Loss of heat is loss of dollars. Furnaces of all kinds allow to pass their walls a greater or less amount of heat, i.e. heat is lost by conduction and by radiation. This heat is often spoken of as radiation loss. It is due to the heat being conducted from the inside to the outside of the furnace. The materials of construction, and manner of building the furnace has much to do …
Design And Details Of Elevated Steel Tank, William A. Baueris
Design And Details Of Elevated Steel Tank, William A. Baueris
Bachelors Theses
"An effort has been made in this work to furnish complete plans and specifications for a steel structure which could replace the concrete reservoir on natural elevation north of Rolla, attention being given to capacity and relative elevations. A comparison of these two structures regarding relative advantages and disadvantages is herein given, with the intention of providing some foundation as a source of choice between these two classes of structures"--page 2.
A Comparison Of The Solvents Used In The Hydrometallurgy Of Silver, Simon Jochamowitz, Enrique Cavazos
A Comparison Of The Solvents Used In The Hydrometallurgy Of Silver, Simon Jochamowitz, Enrique Cavazos
Bachelors Theses
"Potassium cyanide solutions, hyposulphite of soda solutions, and a mixture called the Russell solution, are the solvents most used to win silver from its ores. We are not the first to attempt comparisons of the solvent powers of the different solutions named. It is difficult, at least we have found it difficult, to find tabulated, a comparison of the various solvents from the points of view of speed of action, of consumption of reagents, of suitability of one or another to a given type of ore"--page 1.
Investigation Of Hindered Settling Ratio Of Galena, Sphalerite And Pyrite As Compared To Quartz In Air, Ralph Wilheim Watson, William Danels Clarke
Investigation Of Hindered Settling Ratio Of Galena, Sphalerite And Pyrite As Compared To Quartz In Air, Ralph Wilheim Watson, William Danels Clarke
Bachelors Theses
"The object of this thesis is to determine the hindered settling ratios in air, of Galena, of Pyrite, and of Sphalerite as compared to Quartz"--Problem, page 1.
The Volatilization And Absorption Of Silver Chloride, Edgar Joseph Wolf, Victoriano Elicano
The Volatilization And Absorption Of Silver Chloride, Edgar Joseph Wolf, Victoriano Elicano
Bachelors Theses
"The purpose of this thesis was to study the relation of the loss of silver chloride to such variables as the temperature, as the type of gangue, as the method of carrying on the roast; to determine what becomes of the silver lost and to attempt to recover it. In our work we consider something seemingly overlooked by many, if not all of the workers; namely, that there is a great loss of silver chloride due to absorption, as well as to volatilization. Volatilization has been the hobby of most of the experimeters. We hope to show as a part …
A Study Of The Losses Of Gold During Cupellation In The Presence Of Tellurium, George Albert Easley, Carl Winthrop Keniston
A Study Of The Losses Of Gold During Cupellation In The Presence Of Tellurium, George Albert Easley, Carl Winthrop Keniston
Bachelors Theses
"It is generally accepted that the presence, in the lead button, of a small amount of tellurium causes, during cupellation, a loss of gold. Little, however, is known as to the loss, when tellurium is present, due to variation in the temperature of cupellation...Our work was carried on with the intention of determining the loss of gold, due to temperature in the presence of known amount of tellurium and to compare this loss with that caused by the temperature alone. Has temperature the same, a greater, or a less effect on the loss of gold during cupellation when tellurium is …
The Oxidation Of Natural Sulphides, Harry Clay Kibe
The Oxidation Of Natural Sulphides, Harry Clay Kibe
Bachelors Theses
"Work upon the oxidation of natural sulphides done at this laboratory indicates that laboratory methods might be successfully employed in seeking explanations of certain actual problems in the theory of ore deposition. This led me to experiment further with galena, sphalerite, and iron pyrite, which work confirms the results of Gottschalk and Buehler, namely, that the course of an oxidation is materially effected when mixtures of sulphides are employed rather than single individual minerals"--page 1.
A Study Of The Settlement Of Slimes, William Simpson Hall, James Crawford Compton
A Study Of The Settlement Of Slimes, William Simpson Hall, James Crawford Compton
Bachelors Theses
"The purpose of this thesis, as originally planned, was to determine the effect produced by certain substances called electrolytes upon the mill product known as "slimes". The subject presented an ever increasing number of new problems as it progressed and some work along the line of several of these branches is embodied in the following pages. Reports of investigation and behavior of slimes when treated for quick settlement are few and unsatisfactory. Our results may prove nothing already unknown, but the fact that so little data is easily accesible sic has been the motive for this thesis"--Preface, page 1.
Timbering In The Warren District, Cochise Co., Arizona, Fred Tete Boyer
Timbering In The Warren District, Cochise Co., Arizona, Fred Tete Boyer
Bachelors Theses
No abstract provided.