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Articles 68611 - 68640 of 68682
Full-Text Articles in Entire DC Network
The Thermal Conductivity Of Refractories, Boyd Dudley Jr.
The Thermal Conductivity Of Refractories, Boyd Dudley Jr.
Professional Degree Theses
"The usefulness of correct data in regard to the thermal conductivity of refractories and other materials used in the construction of metallurgical and industrial furnaces is quite generally recognized. Numerous investigations of this property of refractories have been conducted, and in many cases the published data of different investigators are somewhat conflicting. This is particularly true of figures pertaining to materials intended for use at high temperatures, and it is with such materials that the metallurgist is mot interested. The difficulties in the way of precise determinations of thermal conductivities at elevated temperatures are numerous, and it is not particularly …
Engineering And Geological Work At Cananea, Mexico, Edward Dale Lynton
Engineering And Geological Work At Cananea, Mexico, Edward Dale Lynton
Professional Degree Theses
"The purpose of this thesis is to relate in as clear and concise a manner as possible the way "things are done" in practice as observed by myself during my two years' experience as sampler and assistant geologist to the Cananea Consolidated copper Co. of Cananea, Sonora, Mexico. My work took me to all the mines, and in this way I was able to accurately observe the sampling, system of mining, geology, etc. of this famous and important camp"--page 1.
An Efficiency Test Of A Laboratory Fan, Daniel Webster Blaylock, Edward Albrecht Schroer, Elton Arthur Miller
An Efficiency Test Of A Laboratory Fan, Daniel Webster Blaylock, Edward Albrecht Schroer, Elton Arthur Miller
Bachelors Theses
"The principal object of these tests is to determine the efficiency of the fan when working against the different sized orifices at various speeds and pressures. Before this could be accomplished, the coefficients of discharge of the 18 in., 24 in., and 30 in. orifices had to be determined"--Object of Tests, page 4.
Effect Of Compression And Transmission On The Illuminating And Heating Value Of Carburetted Water-Gas, Horace Herbert Clark
Effect Of Compression And Transmission On The Illuminating And Heating Value Of Carburetted Water-Gas, Horace Herbert Clark
Bachelors Theses
"The object of this series of tests was to determine the effect of compression upon the candle power of carburetted water gas, as made in the daily operation of a three piece water gas machine, cooled in condensers, passed through shavings, scrubbers and oxide material, and thence into a storage holder, ready for compression and distribution. The apparatus consisted of a small Westinghouse air compressor; nine storage tanks of six inch wrought iron pipe; transfer pump; pressure regulator; standard one hundred inch bar photometer, complete, with regulators, clock, meter, pentane lamp, etc., gas analysis outfit, complete; also gages, thermometers, etc."--Page …
A Study Of Induction Motors, Michael P. Valle
A Study Of Induction Motors, Michael P. Valle
Bachelors’ Theses
The induction rotor is tho most popular type of alternating current motor, and finds a wide field of application, Its action is based on the principle of the revolving magnetic field produced by alternating current displaced in phase relative to each other. At least two currents of different phase are necessary in order to produce a revolving field.
A Study On Water Works For Irrigation, Joaquin Hermenegildo Hernandez
A Study On Water Works For Irrigation, Joaquin Hermenegildo Hernandez
Bachelors’ Theses
The large map set at the end of this thesis shows the boundary lines and general topography of the Hacienda de Guaname, a state owned by Don Mariano Hernandez Ceballos at the present day, situated in the high plateau of Mexico in the state of San Luis Potosi, about 75 Kilometers north of the capital of the state and to the west of the Mexican National R.R.. The extension of this property is over half a million acres but on account or the scarcity of rain fall during the Summer months, hardly any land is used for agriculture, the total …
The Voice Of The Phi Sigma -- 1914 --, Phi Sigma
The Voice Of The Phi Sigma -- 1914 --, Phi Sigma
The Voice of the Phi Sigma
This item is part of the Phi Sigma collection at the College Archives & Special Collections department of Columbia College Chicago. Contact [email protected] for more information and to view the collection.
Amalgamation And Refining Of High Grade Silver Ores Containing Arsenic And Antimony, Edwin Bryant Thornhill, Robert Emmett Dye
Amalgamation And Refining Of High Grade Silver Ores Containing Arsenic And Antimony, Edwin Bryant Thornhill, Robert Emmett Dye
Professional Degree Theses
"The advantage of shipping refined silver bullion over the shipment of concentrate to a smelter has been apparent to mine operators in this district for years but not ill recently was the project undertaken by the Buffalo Mine Limited, Cobalt, Ont., Canada. Early in 1912 experiments were conducted by H. G. S. Anderson with this end in view. The results of these experiments led to the erection of an amalgamation plant, the design and construction of which was carried out by Mr. Anderson...It is not the hope in this paper to set forth facts that are entirely new as similar …
Methods Of Prospecting And Estimating Ore Bodies Of The Wisconsin Zinc And Lead District, Guy Henry Cox
Methods Of Prospecting And Estimating Ore Bodies Of The Wisconsin Zinc And Lead District, Guy Henry Cox
Professional Degree Theses
"The stratigraphy and structure of the Wisconsin Zinc and Lead District are remarkably simple; so simple in fact that one is liable to under estimate their importance in relation to the ore deposits. But four formations are of interest to one operating in this district, all of which are Ordovician in age and which in ascending order are, - the St. Peter sandstone, the Platteville limestone, the Galena dolomite, and the Maquoketa shale"--Geology - Stratigraphy - General, page 1.
The Efficiency Of The Kerruish Smoke Consumer And Coal Economizer, Arthur F. Truex, Gilbert F. Metz
The Efficiency Of The Kerruish Smoke Consumer And Coal Economizer, Arthur F. Truex, Gilbert F. Metz
Bachelors Theses
"The Kerruish Smoke consumer is the invention of Mr. H. B. Kerruish and is patented in the United States under the Patent Number 1,046,196. The tests herein shown were made for the purpose of determining the practical value of the device as a smoke consumer, and as a fuel economizer. Many forms of these devices have been put on the market, some using a steam spray, and others using air in a manner similar to the Kerruish apparatus"--Scope of the Thesis, page 2.
Design Of Steel Skeleton For A Fourteen Story Building, Thorhallur Hermann
Design Of Steel Skeleton For A Fourteen Story Building, Thorhallur Hermann
Undergraduate Theses and Senior Projects
No abstract provided.
A Test To Determine The Operating Efficiency Of A Steam Driven Electric Power Plant, Walter H. Rosemeyer, Edward Walter Kane
A Test To Determine The Operating Efficiency Of A Steam Driven Electric Power Plant, Walter H. Rosemeyer, Edward Walter Kane
Bachelors’ Theses
In this test it was desired to determine the amount of water evaporated per pound of coal, and the pounds of steam consumed by main engine per kilowatt-hour output. Because of the existing conditions the test was run on only one boiler but on account of the similiarity of construction the results on the other boilers were assumed to be practically the same. The coal used was Hocking Valley Screenings, abituminous coal, which, from tests conducted by the engineer to determine the fuel best suited to the conditions of the plant, was found to give the most economical results. Since …
A Commercial Efficiency Test Of A Power Plant Located At Marquette University, Edward James Dunphy, James Edward Zimmermann
A Commercial Efficiency Test Of A Power Plant Located At Marquette University, Edward James Dunphy, James Edward Zimmermann
Bachelors’ Theses
The purpose of the test was to determine the coat of generating one kilowatt-hour of electrical energy under existing conditions of operation. The plant under test is located at the Marquette University Power House and consists of a Filer Stowell Company simple, horizontal, now-condensing Corliss steam engine, with an Allis Chalmers Company direct current generator belt connected, and one Fairbanks, Morse & Company horizontal return tubular boiler. The coal used during the test was Pocahontas screenings, costing three and twenty-five cents per ton of 2000 pounds, delivered in the boiler-room.
Old Hickory Trucks, Kentucky Library Research Collections
Old Hickory Trucks, Kentucky Library Research Collections
Research Collections
Advertisement for Old Hickory trucks produced in Louisville, KY by Kentucky Wagon Manufacturing Company
Municipal Highway Design, Karl C. Schmidt
Municipal Highway Design, Karl C. Schmidt
Undergraduate Theses and Senior Projects
No abstract provided.
Cost Of Brick Pavement Constructed, William Mcelroy
Cost Of Brick Pavement Constructed, William Mcelroy
Professional Degree Theses
No abstract provided.
Plans And Specifications Of A Proposed Plant For Treating The High-Grade Silver Concentrate Of The Buffalo Mill By Tube-Mill Amalgamation, Hector George Sylvester Anderson
Plans And Specifications Of A Proposed Plant For Treating The High-Grade Silver Concentrate Of The Buffalo Mill By Tube-Mill Amalgamation, Hector George Sylvester Anderson
Professional Degree Theses
"Pursuant to your orders regarding the making of experimental tests on the high-grade silver concentrate of the Buffalo Mill, both on a small and a commercial scale, to determine the feasibility of extracting the silver contents and refining the same to 999-fine bullion I beg to submit the results of my work which has extended through the past two months. In the majority of the tests I have used a small Abbe-Engineering pebble-jars which will hold easily 1500 grams of ore and have checked the results obtained in these cases by similar results obtained by charging 1000 lbs. of ore …
The Measurement Of Compressed Air And Its Consumption In Rock Drills, Homer Kent Sherry, William Porri
The Measurement Of Compressed Air And Its Consumption In Rock Drills, Homer Kent Sherry, William Porri
Bachelors Theses
"The object of this thesis is to investigate the measurement of compressed air and to determine its consumption in rock drills. Our intention at first was to run more exhaustive tests on the drills, but due to the large amount of work necessary in rigging up the apparatus and computing results, we found it necessary to curtail our work to representative types of the hammer and the piston machines. We regret being unable to give more complete data in regard to the drills, but hope to point out fields for future work since, with the increased facilities now at hand, …
A Comparison Of The Silver Losses Due To Cupellation Using Different Kinds Of Cupels, Martin Harmon Thornberry
A Comparison Of The Silver Losses Due To Cupellation Using Different Kinds Of Cupels, Martin Harmon Thornberry
Bachelors Theses
"In this Thesis my object has been to ascertain the silver losses in cupellation with different kinds of cupel material, thereby determining the effeciency sic of the materials in the four kinds of cupels used. When I began the work I though the losses would be about equal in all cupels, but was surprised to find such a great difference. I refer the reader to the curves to see what really happened"--page i.
Efficiency Of The Missouri School Of Mines Power Plant And Cost Of Operation, Cairy C. Conover, John Richardson Kenney, Louie Lincoln Coover
Efficiency Of The Missouri School Of Mines Power Plant And Cost Of Operation, Cairy C. Conover, John Richardson Kenney, Louie Lincoln Coover
Bachelors Theses
"These tests were made for the purpose of getting the efficiency of the electric power plant as it was being run and the cost of operating it. Tests were first made on the boilers separately. The load at the time of the test was too heavy for one boiler and too light for tow, part of the steam being used for heating the buildings and for the air-compressor. This made it so that no combined test of the boilers and generating couple could be made until the warm weather came and the laboratories using compressed air were closed, which was …
De Re Metallica, Translated From The First Latin Edition Of 1556, Georgius Agricola
De Re Metallica, Translated From The First Latin Edition Of 1556, Georgius Agricola
Rare Books
No abstract provided.
Topography And Geology Of The Panther Bluffs Area, Roswell H. Maveety, Joseph Stewart Irwin
Topography And Geology Of The Panther Bluffs Area, Roswell H. Maveety, Joseph Stewart Irwin
Bachelors Theses
No abstract provided.
Ratio Of The Thermal And Electrical Conductivities For Gas Carbon, Oscar Alan Randolph
Ratio Of The Thermal And Electrical Conductivities For Gas Carbon, Oscar Alan Randolph
Bachelors Theses
"The method of F. Kohlrausch for the determination of the ratio of the heat conductivity upside down gamma , to the electrical conductivity k of a substance is of practical value as well as of theoretical interest. Of practical value because there may be obtained from it - with much great ease than by direct methods - the heat conductivity which has immediate applications, not only to the design and construction of furnaces, but to various other matters of such import; of theoretical interest to the physicist, because of the Wiedmann-Franz and its consequent relation to the electron theory; to …
Friction Of Air In Small Pipes And Fittings, Bejamin H. Cody, Ernest J. Allen
Friction Of Air In Small Pipes And Fittings, Bejamin H. Cody, Ernest J. Allen
Bachelors Theses
"The work of Park and Peterson during 1909-10 at the Missouri School of Mines revealed the fact that more data are needed concerning the loss of pressure due to elbows and other fittings of pipes under three inches in size. Accordingly, we decided to undertake the continuation of their work as a thesis. The apparatus used was practically the same as used in the previous thesis"--page 1.
The Determination Of The Electrical Resistance Of The Human Body Under Conditions To Be Met Within Underground Mining, Duncan S. Smith, Paul E. Coaske
The Determination Of The Electrical Resistance Of The Human Body Under Conditions To Be Met Within Underground Mining, Duncan S. Smith, Paul E. Coaske
Bachelors Theses
"The use of electric wires in mines for power purposes is dangerous to human life. Deaths occur every year from electric shocks, and in most cases these accidents could have been prevented if some precaution had been taken by the victims, or if some care had been taken to protect them from coming in contact with live wires. Most workingmen accustomed to working around electric wires become careless and a lack of knowledge of the danger involved gives rise to the many accidents that occur each year...The object of this investigation is to determine just what resistance the human body …
The Efficiency Of The Rolla Municipal Power Plant, True Walter Blake, Otto Allen Lunak
The Efficiency Of The Rolla Municipal Power Plant, True Walter Blake, Otto Allen Lunak
Bachelors Theses
"The object of this thesis is to determine the efficiency of the separate units and of the plant as a whole under actual normal working conditions"--Object, page 1.
Energy Loss In Commercial Condensers, Walter Roland Allen
Energy Loss In Commercial Condensers, Walter Roland Allen
Electrical and Computer Engineering ETDs
The investigation of the energy loss in condensers is one which electricians and experimenters have long carried on. Their efforts have been restricted chiefly to alternating currents. Many methods have been proposed and used with varying success. The losses in condensers are due to dielectric hysteresis and leakage. That the dielectric of a condenser becomes heated when an alternating current is applied to terminals has long been known. A condenser which has been charged does not lose its entire charge when it is discharged, part of it remaining as a residual charge. Kleiner used the thermo-couple embedded in the dielectric …
Description Of The Surveys Of Portions Of The South And East Boundaries Of The Yellowstone National Park, Albert Babbitt Bartlett
Description Of The Surveys Of Portions Of The South And East Boundaries Of The Yellowstone National Park, Albert Babbitt Bartlett
Professional Degree Theses
"This Thesis will be generally descriptive of the points connected with obtaining the contract under which this survey was made, the outfit necessary for the part doing the work, the personnel of the party, and the duties of each man, the engineering instruments employed in the survey, the country through which the Boundary lines run and the difficulties encountered, the writing of the field notes, and is accompanied by illustrations"--Introduction, page 6.
Laboratory Methods For Copper-Nickel Ores, Walter Irving Phillips
Laboratory Methods For Copper-Nickel Ores, Walter Irving Phillips
Professional Degree Theses
"The Sudbury nickel field, situated in the Province of Ontario, Canada, near the northern shore of Lake Huron, was practically discovered when building the Canadian Pacific Railway. The method of deposit is unusual in that it is not a vein filling but a true igneous deposition. The magma carried besides rock making constituents three principle sulphides, viz. - those of iron as pyrrhotite; of copper as chalcopyrite; and of nickel as pentlandite. These three sulphides, being heavier than the rock matter, and, favored by the slow rate of cooling of the magma, had sufficient time to settle into the lowest …
Friction In Small Air Pipes, Albert Park, Howard Kelsey Peterson
Friction In Small Air Pipes, Albert Park, Howard Kelsey Peterson
Bachelors Theses
"In the course in Compressed Air at the Missouri School of Mines our attention was called to the fact that no reliable data could be found relating to friction losses in pipes under three inches in diameter carrying compressed air. Therefore the undersigned decided to undertake as a thesis the securing of the needed data and herein are recorded the results of our work"--page 1.