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Articles 697981 - 698010 of 699111
Full-Text Articles in Entire DC Network
Suggested Improvements For A Wisconsin Zinc Mill, Raymond Alexander Bingham
Suggested Improvements For A Wisconsin Zinc Mill, Raymond Alexander Bingham
Bachelors Theses
No abstract provided.
Moving Pictures As A Factor In Education, Pierce J. Fleming
Moving Pictures As A Factor In Education, Pierce J. Fleming
Historical Dissertations & Theses
No abstract provided.
Lowell As An Exponent Of New England Thought On The Annexation Of Texas And The Mexican War, With An Historical Survey Of The Early Anti-Slavery Struggle In The United States, Leif Halfdan Aas
Theses and Dissertations
No abstract provided.
A Design Of An Electrical Power Plant, B. C. Russell
A Design Of An Electrical Power Plant, B. C. Russell
Undergraduate Theses and Senior Projects
No abstract provided.
Experiments On Plain And Reinforced Concrete, Paul M. Barnes, Wesley Ruby, Reuben M. Stee
Experiments On Plain And Reinforced Concrete, Paul M. Barnes, Wesley Ruby, Reuben M. Stee
Undergraduate Theses and Senior Projects
No abstract provided.
A Design For Lighting And Power System For The University Of North Dakota, William T. Gilroy
A Design For Lighting And Power System For The University Of North Dakota, William T. Gilroy
Theses and Dissertations
No abstract provided.
The Socialization Of The High School, Hampton Marsden Kishpaugh
The Socialization Of The High School, Hampton Marsden Kishpaugh
Theses and Dissertations
No abstract provided.
Worcester Survey: Children's Charities, John Leroy Hughes
Worcester Survey: Children's Charities, John Leroy Hughes
Historical Dissertations & Theses
This report does not cover all of the child-helping organizations in the city but those not mentioned here are described in the other departments of the survey. A correct understanding of the psychological ideals of each institution, especially those under Catholic management, is necessary in order to get a fair appreciation of the work being done.
Historical Sketch Of The Parks And Playgrounds Of Worcester, John Francis Roche
Historical Sketch Of The Parks And Playgrounds Of Worcester, John Francis Roche
Historical Dissertations & Theses
Tracks the history of Worcester's parks and playground beginning with 1669's Committee of Settlement recommending that twenty acres be reserved at the center of the town "for a training field and to build a school house upon".
Juvenile Deliquency In Worcester, Massachusetts, Thomas Charles Carrigan
Juvenile Deliquency In Worcester, Massachusetts, Thomas Charles Carrigan
Historical Dissertations & Theses
A study of "Juvenile Delinquency in Worcester" was made by Albert H.N. Baron of Clark University in May 1906. Worcester was then a city of about 130,000 inhabitants and Baron's study covered the period from 1901 to May 1906. The period chosen in the present study is from May 1907 to April 1910 and Worcester at this writing has a population of about 146,000. The present study is intended to supplement Baron's to April 1, 1910, except for the interval between May 1906 and June 1907. During these thirteen months the present juvenile law (Chapter 413 of the acts of …
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 …
Our Rivals : The Molds, Yeasts And Bacteria., H. B. Knighton
Our Rivals : The Molds, Yeasts And Bacteria., H. B. Knighton
Electronic Theses and Dissertations
In this day when the erstwhile plebian hog has taken to scaling the social ladder and has climbed beyond the ken of many an honest workman, it behooves the housewife to wage, with double zeal the warfare on our rivals, the molds, yeasts and bacteria who come as unbidden guests eating the very food that we must have, raising enormous families at our expense, frequently making themselves obnoxious as long as the food lasts, then quietly withdrawing into themselves and either waiting for a fresh supply of food or allowing the housewife to start them by the dust-brush route to …
Preliminary Investigation For The Development Of An Hydro-Electric Plant Okanagan Valley British Columbia, Robert Arthur Barton
Preliminary Investigation For The Development Of An Hydro-Electric Plant Okanagan Valley British Columbia, Robert Arthur Barton
Professional Degree Theses
"The Okanagan Valley of British Columbia extends one hundred and thirty-nine miles North from the International Boundary and is immediately West of the Gold Range, an off-shoot of the Rockies ... The suitability of the soil and climate for growing fruit and other special crops has long been recognised; and in the favoured localities, where water is easily obtainable for irrigation, great advance has been made in the last ten years in this direction ... In a mountainous country, where water is abundant and power is needed for transportation, lighting town, and running factories, the natural result is an investigation …
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.
Mining, Concentrating, And Smelting Of Lead And Zinc Ores In Hunan Province China, Tsik Chan Tseung
Mining, Concentrating, And Smelting Of Lead And Zinc Ores In Hunan Province China, Tsik Chan Tseung
Professional Degree Theses
"The mine in question lies in the western part of Shangning District, in the province of Hunan. It is about one hundred and twenty miles south of Changsha, the capital of the province. It may be reached by a four days' trip from Changsha on foot. One can also reach there by native boat in a few days, depending on the wind and the stage of water. The mine is about three miles from the Siang River. This river has its sources in the northern part of Kwangtung province and in the eastern part of Kwangsi province. It flows north-ward …
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 …
The Design And Installation Of An Apparatus For Dehydrating The Air Which Is Used In The Blast Furnaces Of The Hanyang Iron And Steel Works And Other Suggested Improvements, Hanyang, Hupei, China, Andrew Jackson Seltzer
The Design And Installation Of An Apparatus For Dehydrating The Air Which Is Used In The Blast Furnaces Of The Hanyang Iron And Steel Works And Other Suggested Improvements, Hanyang, Hupei, China, Andrew Jackson Seltzer
Professional Degree Theses
"The Hanyang Iron and Steel Works is located in the city of Hanyang, Hupei Province, inland on the mighty Yangste Kiang, a distance of one thousand seventy-five kilometers from Shanghai. The Works is at the junction of the Yangste and Han Rivers and covers several acres. The Works was established by the Viceroy Tchan and was to have been located at Shanghai, but His Excellency, the Viceroy, was transferred to Wuchang, so he decided to locate the Works in Hanyang - just on the opposite bank of the Yangste, from Wuchang ... The Works originally consisted of two blast furnaces …
An Investigation Into The Causes Of Accidents To Shot Firers In Bituminous Coal Mines, George Edwin Lyman
An Investigation Into The Causes Of Accidents To Shot Firers In Bituminous Coal Mines, George Edwin Lyman
Professional Degree Theses
"In many cases the explosions which kill so many shot firers can be directly attributed to the presence of gas, or coal dust, but often there will be explosions of terrific violence in mines which are so wet as to preclude the possibility of dust being held in suspension in the air current, and where no gas has been detected in the history of the mine. Such an instance came under the writer's observation some time ago in which his opportunities of investigation were excellent, and the results of which may perhaps throw light on other apparently mysterious explosions of …
Reheating Compressed Air By Internal Combustion, Norman L. Ohnsorg
Reheating Compressed Air By Internal Combustion, Norman L. Ohnsorg
Professional Degree Theses
"The perfection of a reheater of high efficiency has been discussed and experimented upon for a period of time nearly as long as the application of compressed air itself. At the present time all the reheaters are by the external combustion of fuel as in the case of stoves or furnaces, where the air pipes are carried through the flames or is surrounded by steam pipes, or by some similar contrivance, all of which the heating efficiency of the fuel upon the compressed air is low, due to the great loss by radiation, and hot escaping gases. Reheating compressed air …
A New Copper District In Southern Arizona, Harry Carleton Chamberlain
A New Copper District In Southern Arizona, Harry Carleton Chamberlain
Professional Degree Theses
"Within the last two or three years, the copper mining industry has been growing at a remarkable rate. Perhaps not so much in the output of refined copper as in the exploitation and development of new fields. The panic of 1907 left its mark only too deep on many of the then producing mines. the inflated price of copper has aroused interest in those who owned or controlled small or undeveloped mines ... One of these districts is the one to be treated of in this report. It is not a new discovery, but rather one of the oldest camps …
A Survey Of The Roman Catholic Church Within The United States, Carl Burkhart
A Survey Of The Roman Catholic Church Within The United States, Carl Burkhart
Manuscript Thesis Collection
Abstract unavailable.
Surveying Practice, Edwin Richard Wash
Surveying Practice, Edwin Richard Wash
Professional Degree Theses
No abstract provided.
Dredging, Swan River, Colorado, Henry William Lohman
Dredging, Swan River, Colorado, Henry William Lohman
Professional Degree Theses
"Operations for the extraction of gold from the gravels of this river, were started about ten years ago, at which time it was attempted by means of hydraulic elevators, later by means of the early type dredge, Risdon design, of which three were installed, and later still, an early type Bucyrus Dredge. These all resulted in failure, some alleged to have been due to impossibility of reaching bed-rock; small yardage capacity; and fraility [sic] of design. these have been overcome in the latest type of dredge constructed by the Bucyrus Company, description of which follow later. Dredging here, differs from …
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.
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 …
Metallurgical Operations Of Pyritic Smelting As Carried On At Ducktown, Tennessee, Byron John Snyder
Metallurgical Operations Of Pyritic Smelting As Carried On At Ducktown, Tennessee, Byron John Snyder
Professional Degree Theses
"The Practice of Pyritic Smelting is a comparatively new method. It has made possible the extraction of metals from very low grade ores economically. In fact, the direct smelting of sulphide ores of any sort is a very modern metallurgy. This method is extensively used in the United States and British Columbia and will prove to be very valuable in the future development of other regions. Pyritic smelting may be considered as the oxidizing smelting of pyritic ores in a blast furnace with the view to producing matte which collects the values. A short discussion of copper smelting in general, …
A Study Of The Losses Occurring In The Milling And Smelting Of Missouri-Kansas Zinc Ores, Horace T. Mann
A Study Of The Losses Occurring In The Milling And Smelting Of Missouri-Kansas Zinc Ores, Horace T. Mann
Professional Degree Theses
"At the present time the greater portion of the zinc mined in the Joplin District, is taken from what is known as the sheet-ground. What percentage of the zinc bearing rock is extracted or what percentage is left in the ground when the mine is abandoned, which owing to caving and other causes can not be recovered at some future time, is not known. It is to be hoped that the State Geological Survey will in the near future be able to take up the investigation of this subject. Until they do it will be impossible to make a reliable …
Report Of Herald Mine, Joplin, Missouri, Clay Gregory
Report Of Herald Mine, Joplin, Missouri, Clay Gregory
Bachelors Theses
No abstract provided.
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.