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Articles 32461 - 32490 of 33676
Full-Text Articles in Entire DC Network
The Missouri Miner, February 17, 1931
The Missouri Miner, February 17, 1931
The Missouri Miner Newspaper
No abstract provided.
The Missouri Miner, February 10, 1931
The Missouri Miner, February 10, 1931
The Missouri Miner Newspaper
No abstract provided.
The Missouri Miner, February 02, 1931
The Missouri Miner, February 02, 1931
The Missouri Miner Newspaper
No abstract provided.
The Missouri Miner, January 27, 1931
The Missouri Miner, January 27, 1931
The Missouri Miner Newspaper
No abstract provided.
The Missouri Miner, January 20, 1931
The Missouri Miner, January 20, 1931
The Missouri Miner Newspaper
No abstract provided.
The Missouri Miner, January 13, 1931
The Missouri Miner, January 13, 1931
The Missouri Miner Newspaper
No abstract provided.
Some Of The Difficulties Encountered In The Construction Of A Highway Subway Or Underpass, Lawrence Halley Sanderson
Some Of The Difficulties Encountered In The Construction Of A Highway Subway Or Underpass, Lawrence Halley Sanderson
Professional Degree Theses
"The project from which the subject for this work is taken is located in Section 28, T 13 N, R 11 W, of the third P. M., Scott County, Illinois, within the village limits of Manchester, in the north east part of the town. (Sheet No. 1 of accompanying plans) It is a grade separation between the Chicago and Alton Railway and Route No. 3 of the Illinois system of Highways"--Page 6.
Design Of A 2 Hp Repulsion Start Induction Motor, Joseph Worley
Design Of A 2 Hp Repulsion Start Induction Motor, Joseph Worley
Professional Degree Theses
"The Repulsion Start Induction motor comprises a wound field or stator of laminated structure and a wound armature or rotor whose coils are connected to a commutator upon which brushes bear and function during the starting period. This motor operates as a repulsion motor during the starting period and at a predetermined speed the short circuiting device actuates and short circuits the commutator. The motor then operates as an induction or squirrel cage type. The starting torque of this type of motor is exceptionally high, generally 300% to 400% of full load torque. Consequently this type of motor is regarded …
Technical Methods Of Analysis For Mill Products, Daniel Elijah Huffman
Technical Methods Of Analysis For Mill Products, Daniel Elijah Huffman
Professional Degree Theses
"In mining and milling operations it is necessary that the assays be known as soon as possible, also that these results are more accurate than the sampling or the operation that produced the samples. This means that both speed and accuracy must be considered when selecting a method for the analysis of samples"--Technical Methods of Analysis, page 1.
Chemical Control -- Influence On Manufacture And Quality Of Cement, Joseph Owen Hunt
Chemical Control -- Influence On Manufacture And Quality Of Cement, Joseph Owen Hunt
Professional Degree Theses
"Definition:- Portland cement may be defined as the product obtained by finely pulverizing clinker produced by calcining to incipient fusion an intimate and properly proportioned mixture of argillaceous and calcareous materials with no additions subsequent to calcination excepting water and calcined or uncalcined gypsum. While a review of Portland cement analysis would show a wide variation in chemical composition, it must not be supposed that such latitude in proportioning the raw material really exists. If the resulting Portland cement is to be sound, normal setting, and of good strength it is imperative that the raw materials shall be correctly proportioned …
Memorandum: Current Recording And Reporting Of Mortality And Salvage Data, Buildings, C.B. Central Office Equipment, Multiple Private Branch Exchanges, Wilbur Elihu Sheldon
Memorandum: Current Recording And Reporting Of Mortality And Salvage Data, Buildings, C.B. Central Office Equipment, Multiple Private Branch Exchanges, Wilbur Elihu Sheldon
Professional Degree Theses
"The purpose of this memorandum is to describe the methods and forms to be used in recording currently and reporting annually actual additions and retirements of Buildings, Common Battery Central Office Telephone Equipment, and Multiple Private Branch Exchanges, together with the making of certain periodic estimates of future additions and retirements, final dates of retirement, and probable net salvage at final retirement. All of these data are used in connection with the determination of depreciation rates for the classes of plant mentioned"--Section I. General, page 4.
Japan, Van Hoose Smith
Japan, Van Hoose Smith
Professional Degree Theses
"This ore is mined from a quartz vein which is refined by small seams of graphitic clay material, and the walls of the vein consist of a sort of graphitic shaley material. The above graphitic materials break down under treatment into a rather peculiar clay which was called primary colloidal slime. The milling process in use consists of stamp milling followed by the separation into sand and primary slime in Dorr Duplex Classifiers. The primary slime overflow from these classifiers, which is all practically thru 220 mesh, is thickened and treated by flotation. Normally and with a good supply of …
Gas Analysis By Measurement Of The Thermal Conductivity, Bertie Lee Browning
Gas Analysis By Measurement Of The Thermal Conductivity, Bertie Lee Browning
Professional Degree Theses
"Types of gas analysis. Methods for the analysis of gases may be divided into two general classes, physical and chemical. In chemical methods, a constituent of the gas mixture undergoes chemical reaction and the amount of the constituent is determined by change in volume or by supplementary chemical methods such as titration. The physical methods of analysis differ in that no chemical change takes place in the gas. Instead, a determination is made of some physical property which is related to the composition of the gas mixture. Some of the physical properties which have been used for purposes of analysis …
Proposed Method Of Ventilating The Frood Mine, Herman Jacob Mutz
Proposed Method Of Ventilating The Frood Mine, Herman Jacob Mutz
Professional Degree Theses
"The Frood Mine lies about two and one half miles north of the City of Sudbury, Ontario. The Frood deposit was among the first discoveries in the district, but was not considered as a very important deposit until 1925, when a deep drilling campaign disclosed higher grade ore with depth"--page 3.
A Summary Of Operations And Practice At Shenandoah-Dives, Howard Histed
A Summary Of Operations And Practice At Shenandoah-Dives, Howard Histed
Professional Degree Theses
"The property of the Shenandoah-Dives Mining Company is located in the Animas Mining District, San Juan County, Colorado. The Mine is located on King Solomon Mountain, four miles east and one mile south of Silverton. Silverton is on a branch line of the narrow guage Denver & Rio Grande Western Railway, on which the nearest smelter is located at Durango, a distance of about fifty miles. Included in this report is a claim map showing all the claims and their relative locations"--Location of the Property, page 1.
Georgia Kaolin As The China Clay Constituent In Floor And Wall Tile Bodies, Alfred Arthur Mitchell
Georgia Kaolin As The China Clay Constituent In Floor And Wall Tile Bodies, Alfred Arthur Mitchell
Bachelors Theses
"The replacement of the China Clay content in vitreous floor tile and porous wall tile bodies wholly by Georgia sedimentary kaolin would reduce the cost of these bodies being used in our floor and wall tile plants at present. This plastic kaolin is available in large quantities in the State of George, covering an area of about 7500 square miles. It is the intention of this work to substitute this American Clay for the more costly imported English China Clay now being used"--Introduction, page 1.
The Effect Of Bentonite On The Transmission Of Pressure In Green Dry Press Blocks, Charles William Mccaw
The Effect Of Bentonite On The Transmission Of Pressure In Green Dry Press Blocks, Charles William Mccaw
Bachelors Theses
"The object in view in this work was to study the effect of the addition of bentonite on the pressure transmission of dry pressed ware, consisting of plastic fire clay. It was hoped that the bentonite would improve the transmission of the pressure to a noteable extent, forming a stronger, more evenly pressed block than has before been accounted for. This would facilitate the dry pressing of block that tended to crumble and disrupt from excessive pressure, allowing the ware to be pressed harder, and therefore making a more dense product"--Reasons For Investigation, page 4-5.
Disintegration Of Green Missouri Fire Clay Bodies At Low Temperatures, Wilbur Brooks Schofield
Disintegration Of Green Missouri Fire Clay Bodies At Low Temperatures, Wilbur Brooks Schofield
Bachelors Theses
"Several years ago in the Ceramics Lab. of the Missouri School of Mines some A. P. Green Ozark Clay test pieces were left in a drier for a period of about seven months at a constant temperature of 110C. At the end of this period it was noticed that these specimens had disintegrated and crumpled down to a powdered mass. The object of this experiment was to repeat the former test and see if the clay would disintegrate and if so why. We also wished to find if by drying at higher temperatures for a shorter length of time would …
Size And Shape Of Clay Grains As Affected By Various Methods Of Grinding, Henry William Meyer
Size And Shape Of Clay Grains As Affected By Various Methods Of Grinding, Henry William Meyer
Bachelors Theses
"It is a common belief among those persons manufacturing dry pressed brick that the shape of grain of the clay used for this purpose would materially affect the physical properties of the resultant product. Some believe that clays, dry pan-ground, give a better product than clays disintegrated mechanically or passed through rolls. In some recent dry press investigations it was found that some milling methods gave an advantage over other methods, in the matter of pressure transmission. Due to this, a possible cause for the advantage was attributed to the shape of the grains resulting from the various methods of …
The Commercial Value Of High Iron And High Alkalie Diaspore, William Lucius Mccracken
The Commercial Value Of High Iron And High Alkalie Diaspore, William Lucius Mccracken
Bachelors Theses
"In a recent survey of the refractory field particularly regarding high iron and high alkali diaspore it was suggested that perhaps some of these impure clays had the proper flux content to make them a body of stable volume in the initial firing operation. At present there is an apparant sic lack of information regarding the commercial value of these impure diaspores. One of the great problems in the use of diaspore refractories is the lack of stability of volume while in service subjected to severe heat treatments of varying degrees"--page 3.
The Transmission Of Pressure In The Dry Pressing Of Typical Building Brick And Fire Brick Mixes As Affected By The Variation In Grog Size, Henry Rickel Herron
The Transmission Of Pressure In The Dry Pressing Of Typical Building Brick And Fire Brick Mixes As Affected By The Variation In Grog Size, Henry Rickel Herron
Bachelors Theses
"In the formation of dry pressed ware, the transmission of pressure is of vital importance to the quality and character of the finished product as regards the resistance to spalling, load at high temperatures, slag action, abrasion and other physical properties. Furthermore, the transmission of pressure is a limiting factor as regards the size and irregularity of shape of a product manufactured by the dry press process"--Introduction, page 1.
The Transmission Of Pressure In The Dry Pressing Of Typical Building Brick And Fire Brick Mixes As Affected By The Variation In Grog Size, Stanley John Tompach
The Transmission Of Pressure In The Dry Pressing Of Typical Building Brick And Fire Brick Mixes As Affected By The Variation In Grog Size, Stanley John Tompach
Bachelors Theses
"In the formation of dry pressed ware, the transmission of pressure is of vital importance to the quality and character of the finished product as regards the resistance to spalling, load at high temperatures, slag action, abrasion and other physical properties. Furthermore, the transmission of pressure is a limiting factor as regards the size and irregularity of shape of a product manufactured by the dry press process. Prior to the time of this investigation several companies have succeeded in producing ware up to six (6) inches in depth; but an increase over six inches has resulted, in every case, in …
The Effect Of Small Amounts Of Chrome Ore On Dry Press Diaspore Refractories, Allen John Reid
The Effect Of Small Amounts Of Chrome Ore On Dry Press Diaspore Refractories, Allen John Reid
Bachelors Theses
"The term "Diaspore" as used in this paper will be used to mean the diaspore clay from which refractory bodies are made. The pure mineral Diaspore (Al₂O₃ . H₂O) has an Al₂O₃ content of 85%, while the best grades of diaspore clay run from 76% to 79% diaspore. Diaspore clay consists of a varying percentage of diaspore, ranging from 60% to 79%, and the remaining percentage as clay. The most objectionable impurities which occure sic in diaspore clay are alkalies. The chief source of diaspore is the central part of Missouri. It occurs in pot hole formations accompanied by "flint" …
Pressure Transmission In Clays Affected By Time Of Pressure Application, Robert Edward Lee
Pressure Transmission In Clays Affected By Time Of Pressure Application, Robert Edward Lee
Bachelors Theses
"Experienced dry-press operators have long known that when they slow down their presses, to the proper speed they are able to exert more pressure on a wetter mix with out pressure cracks becoming apparent. When a clay mix is compressed in a dry-press there is a gradation of the pressure exerted, from the rams to the center, causing in some cases a soft centered brick. "Shelly brick", are undersirable sic because they do not have uniform physical properties through out. This weakens their structure, due to unequal stresses developed in drying and fireing sic. The defective structure of dry-pressed brick …
The Rollamo 1931, The University Of Missouri School Of Mines And Metallurgy
The Rollamo 1931, The University Of Missouri School Of Mines And Metallurgy
Yearbooks
No abstract provided.
The Spinning Top, Aaron Jefferson Miles
The Spinning Top, Aaron Jefferson Miles
Masters Theses
"Several mathematicians have solved the problems of motion of the top and gyroscope most completely, but none of them have considered in their solutions the effects of the supporting gimbal rings upon the motion or the effects of a variable rotor speed. It is the purpose of this paper to investigate the top equations by two well known methods; namely, by the method of Lagrange and by the method of Jacobi; considering in both the dynamics of the gimbal rings and varying rotor speed"--Introduction, page 3.
A Qualitative Study Of Arsine And Stibine Reactivity Toward Inorganic Salts In Certain Solvents, John Edgar Antener
A Qualitative Study Of Arsine And Stibine Reactivity Toward Inorganic Salts In Certain Solvents, John Edgar Antener
Masters Theses
"The effects of arsine and stibine on some substances have been investigated by various workers and recorded without any attempt at systematic classification. In this work a more comprehensive study of the precipitating effect of arsine and stibine on common inorganic salts in certain solvents, namely, water, ethyl alcohol, ethyl ether, acetone, carbon disulphide, carbon tetrachloride, chloroform, and benzene has been made, with an attempt at reactivity classification"--Introduction, page 1.
A Study Of An Objective Placement Examination For Sectioning College Physics Classes, John Milton Willson
A Study Of An Objective Placement Examination For Sectioning College Physics Classes, John Milton Willson
Masters Theses
"For several years the Department of Physics of the Missouri School of Mines has practiced sectioning of its classes in general physics. The aim has been to segregate in one section the students of superior ability, giving them a course including both the fundamentals of physics and their applications in engineering. The remainder are given a course in fundamentals without placing so much stress upon the applications...Another criterion used to supplement the first-year grade record is the student's score on the Iowa Placement Examinations. The physics examination consists of two parts, the Training Series and the Aptitude Series. These examinations …
Some Results Of Magnetometric Surveying In Missouri, John Gustave Grohskopf
Some Results Of Magnetometric Surveying In Missouri, John Gustave Grohskopf
Masters Theses
"This thesis describes the results of a series of magnetic surveys carried on in the state of Missouri. The financial assistance required for the work was granted in the form of a fellowship to the author by the Industrial Club of the Industrial Bureau of St. Louis; Mr. George S. Smith, Director. Since the progress of any industrial center is accelerated by the mineral resources contiguous to it, the Industrial Club believed that further research upon known and also undeveloped mineral deposits might result in the development of them. It was decided that geophysical methods of research might show greater …
Studies In The Distribution Of Orbitolina Walnutensis Carsey, Shirley Alfred Lynch
Studies In The Distribution Of Orbitolina Walnutensis Carsey, Shirley Alfred Lynch
Masters Theses
"This paper has shown the stratigraphic and geographic range of the foraminifer, Orbitolina walnutesis Carsey. Samples from sections in thirteen counties in north and north central Texas have been studied. Many geologists have previously studied these sections in detail, correlation them and published the results"--Summary and Conclusions, page 73.