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Articles 18631 - 18642 of 18642
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The Factors Influencing The Price Of Metals On The Metal Market, Thomas Patrick F. Walsh
The Factors Influencing The Price Of Metals On The Metal Market, Thomas Patrick F. Walsh
Masters Theses
"Every year the various engineering and industrial magazines print curves showing the rise and fall of metal stocks throughout the year. to the ordinary reader, these curves are seldom intelligible; he sees the ups and downs; he knows that the prices have risen and fallen; but he rarely knows what causes these changes -- and the curves themselves never tell. This paper tries to remedy this defect; it draws its curves, and, in the light of historical events, which it recounts, tries to determine the causes for the fluctuations in the market. it further places these factors on the curve …
Methyl Amines From Carbinol And Ammonium Chloride, Arthur Mark Howald
Methyl Amines From Carbinol And Ammonium Chloride, Arthur Mark Howald
Masters Theses
"During the spring of 1919 we undertook to prepare tri-methyl-amine for the Research Department of the Eastman Kodak Company in the Industrial Chemistry Laboratory of the Missouri School of Minds. According to V. Merz and K. Gasiorowski the three methyl amines were qualitatively proven to be present in the reaction products obtained by heating methyl alcohol, ammonia and zinc chloride to 220°C. in a bomb for fourteen hours. As these raw materials are inexpensive we attempted to prepare the tri-methyl-amine by this reaction employing for the purpose a small industrial autoclave. Methyl amines were obtained by the yield especially of …
The Preparation And Physical Properties Of Benzene- And Toluene-Sulphonamides, Karl K. Kershner
The Preparation And Physical Properties Of Benzene- And Toluene-Sulphonamides, Karl K. Kershner
Masters Theses
"The formation of sulphonamide derivatives is often of distinct importance. These substances are easily purified and give sharp mepting points which make them of value for identification phases of research work. Also they are of value commercially as in the production of saccharin and other similar compounds. The purpose of this investigation is to secure information on the comparative production and yield of sulphonamides, and intermediate products, formed from their respective ring hydrocarbons, as benzene and toluene. careful melting point are taken on purified products and solubility curves developed for different solvents. The latter give an interesting basis for comparison"--Introduction, …
Graphics And Its Application To The Progress And Cost Analyses Of A House Building Construction Company, Frank Lewis Leonard Wilson
Graphics And Its Application To The Progress And Cost Analyses Of A House Building Construction Company, Frank Lewis Leonard Wilson
Masters Theses
"In the graphical analyses of Stresses in Framed Structures, we study, by means of diagrams, the stability or equilibrium of structures and the relation between the external forces and the stresses created in the members of the frame. The principle involved is that we may represent any force both as to direction and intensity by a straight line, by considering the direction of the line to be identical with that of the force and adjusting its length according to any arbitrary unit adopted for the forces under consideration. By this means we can solve the stresses in framed structures with …
Some Chemical Problems In Geology, Reginald Scott Dean
Some Chemical Problems In Geology, Reginald Scott Dean
Masters Theses
"This thesis is in the main a compilation of the views held at this institution in regard to the problems discussed as interpreted by the author. No claims for originality are made except in the manner of presentation as the material used has been obtained by conference and class room work with Professor V. H. Gottschalk and Professor G. H. Cox and also to some extent with H. A. Buehler, State Geologist. On the other hand the material is an expression of these ideas as assimilated by the author and hence may in certain cases differ radically from the views …
A Study Of The Precipitation Of Iron Di-Sulphide And Its Relation To Certain Types Of Deposits, Vachel Harry Mcnutt
A Study Of The Precipitation Of Iron Di-Sulphide And Its Relation To Certain Types Of Deposits, Vachel Harry Mcnutt
Masters Theses
"Very few of the interesting points bearing upon the formation of iron di-sulphide will be treated in this paper. The laboratory tests made are considered to have been sufficiently thorough to substantiate the ideas set forth so that exhaustive tests were not necessary. While the field evidence was collected largely in the Joplin district of Missouri, the conclusions are sufficiently generalized to be applicable to any district in which pyrite and marcasite have been derived from cold solutions"--page 2.
Design Of 300 Ton Cyanide Tailings Plant And Operation Of Same, Lamar Horacio Hunt
Design Of 300 Ton Cyanide Tailings Plant And Operation Of Same, Lamar Horacio Hunt
Masters Theses
"The plant in question was designed by the writer, to treat the immense tailings dumps of the Sacramento Gold Mining company at Mercur, Utah, consisting of one-half million tons of old cyanide tailings. The ore is porous and friable, causing much slime, which is impermeable to cyanide solution, by the old leaching system. Slime has always been troublesome, and the above plant was designed to overcome this difficulty"--page [1].
Ore Dressing Laboratory For The Missouri School Of Mines And Metallurgy, Rolla, Missouri: Design, Description, Drawings For Erection, Bills Of Material, And Specifications, Boyd Dudley Jr.
Masters Theses
"The work of preparing suitable drawings and specifications for the construction of the new Ore Dressing Laboratory of the Missouri School of Mines and Metallurgy was begun about August 15, 1909. At that time general plans, as shown in drawings No. 1 and No. 2, were drawn up and submitted for approvaleaf With certain minor alterations, to be mentioned under the section on specifications, these plans will be followed in the installation of machinery. Other detail drawings were made by the class in Ore Dressing Problems under the direction of the writer during the school term ending March 12, 1910. …
General Method Of Procedure In The Working Out Of The Uncompahgre Valley Project, Colorado, Leo J. Foster
General Method Of Procedure In The Working Out Of The Uncompahgre Valley Project, Colorado, Leo J. Foster
Masters Theses
"On the 17th of June 1902, Congress passed an act which may have appeared of little moment at that time, but which is not attracting the attention of the people of the United States. It is known on the Statute Books as the Reclamation Act and its purpose is to provide a Reclamation Fund, the said fund being used only to examine and construct Irrigation Works in certain Western States and Territories. This Act provides that the proceeds of the sale of public lands in thirteen States and three Territories, known as the Public Land States, less a deduction of …
The History And The Development Of The Cyanide Industry, Horace T. Mann
The History And The Development Of The Cyanide Industry, Horace T. Mann
Masters Theses
"The accompanying thesis is a compilation from articles published n the magazines and from books. Where no references are given, the statements are the impressions gained from reading several articles on the same subject. None of the work originated with myself"--page [ii].
The Determination Of Aluminium, Victor Hugo Gottschalk
The Determination Of Aluminium, Victor Hugo Gottschalk
Masters Theses
No abstract provided.
Mine Opening And Timbering, George W. Cole