Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Social and Behavioral Sciences (4044)
- Engineering (3914)
- Arts and Humanities (3663)
- Education (2663)
- Physical Sciences and Mathematics (2070)
-
- Psychology (1632)
- Life Sciences (1543)
- Medicine and Health Sciences (1502)
- Art and Design (1036)
- Electrical and Computer Engineering (754)
- Architecture (725)
- Mechanical Engineering (696)
- Educational Administration and Supervision (647)
- Civil and Environmental Engineering (597)
- Earth Sciences (589)
- Music (589)
- Communication (575)
- Chemistry (565)
- Sociology (561)
- English Language and Literature (549)
- Materials Science and Engineering (533)
- History (513)
- Chemical Engineering (505)
- Biology (496)
- Geology (473)
- Student Counseling and Personnel Services (459)
- Civil Engineering (454)
- Religion (384)
- Political Science (361)
- Computer Sciences (336)
- Institution
- Keyword
-
- Music (108)
- Graphic design (103)
- Education (86)
- Religion, General (86)
- Theology (73)
-
- Memory (65)
- Product design (64)
- Fiction (59)
- Painting (58)
- Architecture (55)
- Adaptive reuse (53)
- Identity (53)
- Mass Communications (48)
- Philosophy (48)
- Design (47)
- Architecture and community (45)
- Art education (44)
- Furniture design (44)
- Photography (44)
- Sculpture (44)
- Art (43)
- Community (43)
- Architecture and society (42)
- Worship (42)
- Women (40)
- Graphic Design (39)
- Technology (39)
- Apologetics (38)
- Curriculum (38)
- Materials (38)
- Publication Year
- Publication Type
- File Type
Articles 18601 - 18625 of 18625
Full-Text Articles in Entire DC Network
Determination Of The Solubilities Of Lithium, Sodium, And Potassium Sulphates In Absolute Methyl And Ethyl Alcohols, Jennie Lynn Lenox
Determination Of The Solubilities Of Lithium, Sodium, And Potassium Sulphates In Absolute Methyl And Ethyl Alcohols, Jennie Lynn Lenox
Masters Theses
"It was thought by the author that there might be some relation between the solubility of a salt in the alcohols and the position of those alcohols in the series of monohydric alcohols; that is, that there should be a definite increase or decrease in the solubility of any particular salt in going from a higher to a lower alcohol. The object of this paper was to find the solubilities of some simple salts in as pure alcohol as could be prepared, and to find any relationships if possible"--page 2.
The Action Of Tan Bark In The Manufacture Of White Lead By The Old Dutch Process, Elmer List
The Action Of Tan Bark In The Manufacture Of White Lead By The Old Dutch Process, Elmer List
Masters Theses
"This investigation was undertaken because there is very little definite information in print, regarding the micro-organisms which play such an important part in the Old Dutch Process for manufacturing white lead. The statements concerning this process are very general in character. For instance, one book states, "The first action which goes on is to convert blue lead into basic acetate of lead. This is brought about by the heat of the fermenting tan, causing the evolution of acetic acid from the liquid of the pots." Albert H. Hooker in a little treatise on white lead says: "As it stands now, …
Investigations In Colloidal Phenol, Charles James Millar
Investigations In Colloidal Phenol, Charles James Millar
Masters Theses
"In making some experiments with various colloids it was noticed that phenol and water seemingly formed a colloid, so it was deemed advisable to experiment farther and see if this fact could be established. The references on this subject vary widely and for this reason some of them are given here. Ostwald recognised [sic] the colloid state of a phenol-water mixture at the critical temperature but evidently failed to see the possibility of the phenol-water colloid at all temperatures. In the following article I will try to show that the phenol-water mixture forms a colloid, not only at the critical …
Drill Steel Investigation, Richard J. Stroup, Kurt H. De Cousser
Drill Steel Investigation, Richard J. Stroup, Kurt H. De Cousser
Masters Theses
"
Purpose of Investigation
To determine the best composition of a straight carbon drill steel for drilling in granite.
Method of Investigation
- Obtain several brands of standard grade drill steel. Determine analysis and transformation points of each.
- Determine that heat treatment which gives the best drilling qualities in granite.
- Determine the micro-structure of such steel.
- Obtain steel of a certain specified composition considered best for the conditions and compare the results on this steel with the results obtained on the market products.
- Design of heating furnace for forging steels.
It will be observed from what follows that this outline was …
Drill Steel Investigation, Joseph Herman Rohloff
Drill Steel Investigation, Joseph Herman Rohloff
Masters Theses
"Several brands of standard grade drill steel were obtained [and tested]"--page 1.
High Speed Steel - Its History, Development, Manfacture, Metallography, And Constitution, Including An Extended Bibliography, James Presley Gill
High Speed Steel - Its History, Development, Manfacture, Metallography, And Constitution, Including An Extended Bibliography, James Presley Gill
Masters Theses
"There is no doubt but that the making of Steel was known and practiced by the early Greeks probably several centuries before the birth of Christ. There have been discoveries of pre-historic forges and smelters evidently used for the making of iron and steel and it is certain that implements made of these materials dates back to antiquity. As to the methods of making the steels of antiquity there is little known, but it is quite probable since iron has a strong affinity for carbon that in the forging of the iron it's contact with the carbonaceous fuel would absorb …
Glucose From Corn Cobs, Barney Nudelman
Glucose From Corn Cobs, Barney Nudelman
Masters Theses
"The efforts of American chemists in recent years have been devoted largely to the utilization of our waste products...Corn cobs offer a particularly inviting field for research along this line on account of the large supply of cobs available and the variety of substances obtainable from them. One of the leaders in this branch of investigation is Dr. F. B. LaForge of the Chemistry Division of the Bureau of Agriculture, who has contributed numerous papers on the subject. In one of these, in collaboration with C. S. Hudson, he describes, among other things, the preparation of glucose, but recognizes the …
The Hydrogen Ion Concentration In The Liquefaction Of Gelatine, Frederick William Shaw
The Hydrogen Ion Concentration In The Liquefaction Of Gelatine, Frederick William Shaw
Masters Theses
"Gelatine is the most typical of the reversible colloids, a solution containing it being very fluid when hot, but setting to a clear stiff gel on cooling, which again becomes fluid at various temperatures, depending on the concentration of the gelatine"--Introduction, page 1.
The Copper Deposits Of Shannon County, Missouri, John Hyer Bowles, Lewis Ely Davidson
The Copper Deposits Of Shannon County, Missouri, John Hyer Bowles, Lewis Ely Davidson
Masters Theses
"The object of this report has been three-fold. First, it has been deemed necessary to discuss the general geology of the area about Eminence, showing the distribution and character of the different formations. The distribution is shown on a topographic map of the Eminence Quadrangle...In the second place, it is intended to give a detailed account of the history, development, and extent of mining operations in Shannon county, with the amounts of production and the occurrence of the ore. The third object of this report is to develop a probable theory for the genesis of the ore, and to discuss …
Furfural (Furfuraldehyde) And Some Of Its Derivatives, Marion Smith Badollet
Furfural (Furfuraldehyde) And Some Of Its Derivatives, Marion Smith Badollet
Masters Theses
"In the spring of 1919 the Eastman Kodak laboratories suggested to the chemistry department of the Missouri School of Mines and Metallurgy that experiments on small-scale production of furfural be undertaken. After a series of experiments a small amount of this product was made and a report was given before the American chemical Society at St. Louis in April 1920. The furfural prepared at the Missouri School of Mines and Metallurgy was sold to the Eastman Kodak laboratories. Within recent years very little experimental work has been done on furfural. It commands a high price as only small amounts are …
The Action Of Nitrogen Trioxide On Pinene, Ernest Wayne Rembert
The Action Of Nitrogen Trioxide On Pinene, Ernest Wayne Rembert
Masters Theses
"The action of nitrous acid on pinene was first studied by Pesci and Bettelli in 1885. they obtained an oil, which, when treated with NH₄OH and steam distilled gave a product of the formula C₁₀H₁₆NO₂. At this point the investigation was discontinued. It is the purpose of this work to show the true mechanism of the reaction and also to establish the formula and nature of the products obtained"--Introduction, page 3.
Characteristics Of Bacillus Influenzae, Georgena Josephine Clarke
Characteristics Of Bacillus Influenzae, Georgena Josephine Clarke
Masters Theses
"This organism is classed under the type of haemoglobinophilic bacteria, due to the fact that its growth is restricted to a special medium containing haemoglibin [sic]. It is a very small bacillus which in the sputum tends to show itself in aggregations, especially centering about other organisms, M. tetragenus in particular"--page 3.
The Preparation Of Zinc Chloride From Smelter Waste, Victor K. Fischlowitz
The Preparation Of Zinc Chloride From Smelter Waste, Victor K. Fischlowitz
Masters Theses
"Interest in the matter of recovering zinc from residual material attaches through the value of a practical method of recovery consistent with commercial operations. The material used in this work at the Missouri School of Mines and Metallurgy was supplied by one of the large chemical firms of Saint Louis"--Introduction, page 3.
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.
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. …
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].
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