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Articles 39151 - 39180 of 39751

Full-Text Articles in Engineering

A Study Of The Transformation Of A Twenty-Eight Per Cent Tin Bronze, Perry A. Boukind May 1949

A Study Of The Transformation Of A Twenty-Eight Per Cent Tin Bronze, Perry A. Boukind

Bachelors Theses and Reports, 1928 - 1970

In this investigation, attention is directed to the phases covered by a 28 per cent tin alloy. When the investigation was started, consideration was given to the possibility of making a Time - Temperature - Transformation curve for this parti­cular alloy. As the work progressed and further research was carried on, this phase of the work was abandoned.

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Chromizing Of Steels, Edward Buchanan May 1949

Chromizing Of Steels, Edward Buchanan

Bachelors Theses and Reports, 1928 - 1970

In recent years, considerable thought and study have been given to the use of chromized articles in place of chromium stainless steel articles. The present extensive application of chromizing, indeed, helps greatly to conserve this valuable metal.

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Caustic Leaching Of Montana Chromite, Chester Freshour May 1949

Caustic Leaching Of Montana Chromite, Chester Freshour

Bachelors Theses and Reports, 1928 - 1970

Chromite is the most important ore used for the production of chromium and chromium alloys. At present, the domestic production is insignificant as compared with the amount of chromite consumed in the United States.

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An Investigation Into The Precipitation Of Copper From Mine Water, Using Sulfur Dioxide To Reduce The Ferric Ion Content, David S. Gleason May 1949

An Investigation Into The Precipitation Of Copper From Mine Water, Using Sulfur Dioxide To Reduce The Ferric Ion Content, David S. Gleason

Bachelors Theses and Reports, 1928 - 1970

The experiments which were preformed showed that sulfur dioxide would reduce the ferric ion content of the mine waters to a very low figure. The reduction in the ferric ion content would improve the efficiency of the precipitation process, and also increase the recovery of copper.

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Application Of The Electric Furnace To The Melting Of Cathode Copper At The Tacoma Smelter, Alvin H. Nelson May 1949

Application Of The Electric Furnace To The Melting Of Cathode Copper At The Tacoma Smelter, Alvin H. Nelson

Bachelors Theses and Reports, 1928 - 1970

In the field of copper metallurgy, the major chang­es effected in the original metallurgical scheme have been based largely upon the lowering in grade of copper ores, and the more particular demands of the fabricators of the metal. The former trend fostered the development of mineral beneficiation, which in turn caused the con­version from blast furnace to reverberatory furnace smelting.

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The Characteristics Of The Electrolyte In The Series System Of Electrolytic Copper Refining, Carl W. Howald Jr. May 1949

The Characteristics Of The Electrolyte In The Series System Of Electrolytic Copper Refining, Carl W. Howald Jr.

Bachelors Theses and Reports, 1928 - 1970

Almost everyone is familiar with the tremendous importance of copper in our everyday life. One of the pro­perties of copper which determines its great usefulness to mankind is its electrical conductivity. This property alone has more to do with the prominence of copper among useful metals then does any other.

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The Casting Of Anodes For The Series System Of Electrolytic Copper Refining, Robert R. Kupfer May 1949

The Casting Of Anodes For The Series System Of Electrolytic Copper Refining, Robert R. Kupfer

Bachelors Theses and Reports, 1928 - 1970

The electrolytic refining process, while usually considered an auxiliary process used in conjunction with pyrometallurgical extraction, deserves a special niche in the complex metallurgy of copper. The development of electrolytic copper refining, for example, is largely responsible for the prominence of the electrical industry. Conversely, it could be stated that the electrical industry played an important part in the development of the copper industry.

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Aluminum - Bronze Compacts And Their Possible Use As A Bearing Material, Donald J. Mcmaster May 1949

Aluminum - Bronze Compacts And Their Possible Use As A Bearing Material, Donald J. Mcmaster

Bachelors Theses and Reports, 1928 - 1970

In the modern aspect of powder metallurgy, the first use of a sintering process was in making filaments for incandescent electric lamps.In the short while from the day of Edison to the pres­ent, the science of working with metal powders has advanced by leaps and bounds.

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The Psilomelane Mineral Of The Butte District, Montana, Logan E. Davis May 1949

The Psilomelane Mineral Of The Butte District, Montana, Logan E. Davis

Bachelors Theses and Reports, 1928 - 1970

During the last few years a great deal of research has been done in connection with the black manganese oxide minerals. This is especially true of the so called mineral psilomelane. It has been proven without a doubt that the name psilomelane has been used in the past to include a great variety of similar black manganese oxide minerals. By the use of X-ray equipment these minerals have been definitely identified.

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An Isopach Map And A Discussion Of The Cambrian Strata In The Central Cordilleran Area, Rudi Forhan May 1949

An Isopach Map And A Discussion Of The Cambrian Strata In The Central Cordilleran Area, Rudi Forhan

Bachelors Theses and Reports, 1928 - 1970

In the past few years intensive studies have been going on concerning Cambrian formations as a locale for orebodies. Many of the dolomites and limestones of southwestern Montana are susceptible to replacement by mineralizing solutions, especially when overlain by a rather impervious layer of shale, as is the Pilgrim limestone of Upper Cambrian time.

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Operation Characteristics Of The Series System For Electrolytic Refining Of Copper, John T. O'Donnell May 1949

Operation Characteristics Of The Series System For Electrolytic Refining Of Copper, John T. O'Donnell

Bachelors Theses and Reports, 1928 - 1970

In the copper electrolytic refining operation, two main objectives are desired: the first is the production of a metal of desired chemical composition and physical characteristics, and the second is the recovery of the valuable by-products.

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Daibase Sill Comanche County, Oklahoma, Jean A. Hardesty May 1949

Daibase Sill Comanche County, Oklahoma, Jean A. Hardesty

Bachelors Theses and Reports, 1928 - 1970

The mechanics of intrusion and the processes involved are becoming of more and more interest to con­temporary geologists, because most of our mineral deposits are associated with igneous intrusions, and unknown-outcropping deposits are thought to be a thing of the past. If, by studying these pro­cesses, we could understand why some igneous masses are barren, while others of similar composition carry economic mineral deposits, geological prospecting for hidden mineral concentration would see a new era.

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The Livingston Formation Of The South Boulder Area, Nelson A. Jones May 1949

The Livingston Formation Of The South Boulder Area, Nelson A. Jones

Bachelors Theses and Reports, 1928 - 1970

The Livingston formation is a thick succession of late Cretaceous lava flows, tuffs, and bedded water-laid volcanic detritus 200 miles long and 100 miles wide lying along the eastern margin of the Rocky Mountains in western Montana from Augusta to Yellowstone Park. It differs markedly within short distances in lithologic character and sequences, and the total thickness may exceed one mile in some places.

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Comparative Studies Of Oklahoma And Missouri Granites With Special Attention To The Heavy Minerals Of The Oklahoma Granites, Russell B. Maurer May 1949

Comparative Studies Of Oklahoma And Missouri Granites With Special Attention To The Heavy Minerals Of The Oklahoma Granites, Russell B. Maurer

Bachelors Theses and Reports, 1928 - 1970

When examined petrographically the granites of Oklahoma show a marked similarity to the granites of South­eastern Missouri. The same heavy accessory mineral suites are present in the granites of both regions and include: fluorite, zircon, apatite, titanite and epidote. This similarity was further shown by the actual correlation of the heavy mineral suites by types, these types being, based on the heavy mineral distributions of the Missouri Granites.

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Benefication Of An Oxidized Lead Ore From The Franklin Mine Lewis And Clark County, Jack D. Mclenegan May 1949

Benefication Of An Oxidized Lead Ore From The Franklin Mine Lewis And Clark County, Jack D. Mclenegan

Bachelors Theses and Reports, 1928 - 1970

This thesis is concerned with the beneficiation of an oxidized lead ore. Emphasis was placed upon concentration by flotation rather than by gravity methods, although some investigation was made with the Wilfley shaking table. The concentration of lead minerals received most consideration in the problem, but wherever possible attempts were made to increase the silver and gold concentration along with the lead.

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An Isopach Map And Discussion Of Triassic Strata In Southern Montana And Wyoming, Robert G. Thompson May 1949

An Isopach Map And Discussion Of Triassic Strata In Southern Montana And Wyoming, Robert G. Thompson

Bachelors Theses and Reports, 1928 - 1970

Oil and gas have been found in the Triassic strata of Wyoming. Although the Triassic has not as yet proven to be a large producing horizon it is very probable that ad­ditional oil will be found in Triassic strata in the future, and it is one of the goals at which oil well drillers aim their tools.

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Foraminifera From The Colorado Shale Of North-Central Montana, Higbee G. Williams, David P. Wilson May 1949

Foraminifera From The Colorado Shale Of North-Central Montana, Higbee G. Williams, David P. Wilson

Bachelors Theses and Reports, 1928 - 1970

The use of foraminifera in the determination of geologic age, and in the correlation of strata, is one of the most important techniques in oil field stratigraphic studies. The petroleum industry in many regions relies on these microscopic life forms to determine the positions of oil-bearing horizons and to determine the tops of beds. In northern Montana the Colorado group of strata, a series of about 2,000 feet of dense, dark similar shales, is known to contain foraminifers.

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Design Of Shallow Wells For Drainage By Pumping, Lewiston Area, Utah, Gregory L. Pearson May 1949

Design Of Shallow Wells For Drainage By Pumping, Lewiston Area, Utah, Gregory L. Pearson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

After approximately 25 years of using open drains in the Lewiston Area, Utah, the water table has not changed appreciably from what it was in 1921 when Hart and Adams (4) conducted their drainage investigations. It is still only about three feet below the ground surface. This is not effective drainage, meeting neither of the two primary drainage requirements of an arid or semi-arid agricultural region, namely; preventing an accumulation of excessive water within the depth of soil required for optimum growth of plant root systems, and maintaining the water table at a depth below the ground surface greater than …

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A Study Of The Street Plan Of Logan, Utah, Paul Walter Gottschalk May 1949

A Study Of The Street Plan Of Logan, Utah, Paul Walter Gottschalk

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

It is the purpose of this thesis to make a study of the street plan for the City of Logan, Utah, to attempt to analyze its desirable and undesirable features as they affect the community, and to prepare a solution to eliminate, insofar as possible, the undesirable features and preserving the desirable.

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Allocation Of Funds For A Rural Highway Program, Emerson Beauchamp Mar 1949

Allocation Of Funds For A Rural Highway Program, Emerson Beauchamp

Kentucky's Annual Forum on Transportation

No abstract provided.

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The Value Of Competent Engineering Supervision On County Roads, W. E. Wehrman Mar 1949

The Value Of Competent Engineering Supervision On County Roads, W. E. Wehrman

Kentucky's Annual Forum on Transportation

No abstract provided.

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Consideration In Planning A Rural Highway Program, Dave M. Humble Mar 1949

Consideration In Planning A Rural Highway Program, Dave M. Humble

Kentucky's Annual Forum on Transportation

No abstract provided.

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Engineering Registration, C. S. Crouse Mar 1949

Engineering Registration, C. S. Crouse

Kentucky's Annual Forum on Transportation

No abstract provided.

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Introductory Talk [1949], J. Stephen Watkins Mar 1949

Introductory Talk [1949], J. Stephen Watkins

Kentucky's Annual Forum on Transportation

No abstract provided.

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Use Of Polarized Headlights, Lewis W. Chubb Jr. Mar 1949

Use Of Polarized Headlights, Lewis W. Chubb Jr.

Kentucky's Annual Forum on Transportation

No abstract provided.

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Highway Safety, James D. Hill Mar 1949

Highway Safety, James D. Hill

Kentucky's Annual Forum on Transportation

No abstract provided.

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Maintenance And Drainage Facilities On Secondary And Rural Highways, Paul Owen Mar 1949

Maintenance And Drainage Facilities On Secondary And Rural Highways, Paul Owen

Kentucky's Annual Forum on Transportation

No abstract provided.

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Standards Of Construction On Secondary And Rural Highways, A. L. Chambers Mar 1949

Standards Of Construction On Secondary And Rural Highways, A. L. Chambers

Kentucky's Annual Forum on Transportation

No abstract provided.

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The Relationship Of Highway Building To Society, N. W. Daugherty Mar 1949

The Relationship Of Highway Building To Society, N. W. Daugherty

Kentucky's Annual Forum on Transportation

No abstract provided.

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Design, Construction And Maintenance Of City Streets, W. W. Sanders Mar 1949

Design, Construction And Maintenance Of City Streets, W. W. Sanders

Kentucky's Annual Forum on Transportation

No abstract provided.

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