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Articles 38941 - 38970 of 39806

Full-Text Articles in Civil and Environmental Engineering

Metal Dust Production, James H. Foreman May 1953

Metal Dust Production, James H. Foreman

Bachelors Theses and Reports, 1928 - 1970

The object of this thesis is to study the production of metal dust by direct application of a mechanical force to a stream of molten metal.


Recrystallization Of High Purity Aluminum, Virgil H. Griswold Jr. May 1953

Recrystallization Of High Purity Aluminum, Virgil H. Griswold Jr.

Bachelors Theses and Reports, 1928 - 1970

If a metal is first cold-worked and then heated to a sufficient temperature for an adequate length of time, the hardening properties due to cold-working disappear, and the metal will return more or less to its original state. Upon examination of the microstructure, we find that new grains have replaced the old grains through what is called recrystallization. The final size of the recrystallized grains depends upon three important variables--the degree of cold-work or deforma­tion, annealing temperature, and annealing time.


A Study Of The Effects Of The Chloride Ion On The Lead-Silver Anodes And On The Lead Tenor Of The Zinc Deposit In Zinc Electrolysis, William A. Mitchell May 1953

A Study Of The Effects Of The Chloride Ion On The Lead-Silver Anodes And On The Lead Tenor Of The Zinc Deposit In Zinc Electrolysis, William A. Mitchell

Bachelors Theses and Reports, 1928 - 1970

The electrolyte used in the commercial production of electrolytic zinc from zinc sulphate solutions contains small amounts of impurities each of which has its own effects upon the process. Impurities such as antimony, cobalt, nickel, and iron tend to lower the current efficiency while other impurities such as chlorine, fluorine, and nitrates tend to increase the corrosion of the lead anodes and thereby increase the lead tenor of the zinc deposit.


The Precipitation Of Calcium Tungstate From Sodium Tungstate Solution, Martin E. Messner May 1953

The Precipitation Of Calcium Tungstate From Sodium Tungstate Solution, Martin E. Messner

Bachelors Theses and Reports, 1928 - 1970

In view of the great need for tungsten in the present industrial world it is necessary that all known tungsten sourves be utilized to the greatest possible extent. Scheelite ores promise to be an increasingly important source of tungsten, inasmuch as the discovery of vast new deposits has been made and known deposits of high grade ores have practically been depleted.


The Effect Of Manganese On The Age Hardening Of Aluminum-Copper Alloys, Keith P. Burgess May 1953

The Effect Of Manganese On The Age Hardening Of Aluminum-Copper Alloys, Keith P. Burgess

Bachelors Theses and Reports, 1928 - 1970

It is known that age-hardening occurs in alloys of the solid solution type containing a hardening constituent, of a metal or metallic compound which is more soluble in the solvent phase at higher tempertures than at lower temperatures.


A Study Of The Beneficiation Of Low-Grade Domestic Chromite, Darrell Edward Bodie May 1953

A Study Of The Beneficiation Of Low-Grade Domestic Chromite, Darrell Edward Bodie

Bachelors Theses and Reports, 1928 - 1970

Chromite, a strategic mineral, is being consumed in ever increasing quantities in the United States today. Although the United States imports practically all of the chromite that is being consumed, it is gradually becoming necessary to exploit the low-grade deposits that are located within the United States, and also the low-grade deposits of Canada.


A Petrographic Analysis Of The Basal Member Of The Kootenai Formation, Frank E. Coupal May 1953

A Petrographic Analysis Of The Basal Member Of The Kootenai Formation, Frank E. Coupal

Bachelors Theses and Reports, 1928 - 1970

The basal member of the Kootenai formation in south­western Montana is typically a fine to medium-grained "salt and pepper" sandstone and chert-pebble conglomerate. The section between Delpine, Montana, and Melrose, Montana, generally thickens and markedly coarsens to the West.


The Benefication Of A Low-Grade, Montana Scheelite Ore, Walter G. Parker May 1953

The Benefication Of A Low-Grade, Montana Scheelite Ore, Walter G. Parker

Bachelors Theses and Reports, 1928 - 1970

The increasing importance of tungsten as an industrial metal and the recent discoveries of extensive deposits of low-grade tungsten ores in Montana led to the investigation which is reported in this paper. The purpose of this investigation was to determine if a saleable concentrate could be obtained from one of these low-grade, Montana scheelite ores.


Drainage Of The Logan-Hyde Park-Benson Area, Utah, Gordon H. Flammer May 1953

Drainage Of The Logan-Hyde Park-Benson Area, Utah, Gordon H. Flammer

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

B.A. Etcheverry (4) in his book, Land Drainage and Flood Protection, states that inadequate drainage causes: (1) a public health menace, (2) an animal health menace, (3) lower grade plant life, (4) inadequate soil saturation, (5) lower soil temperatures, (6) shallow root penetration and, therefore, plant suffering in late summer months from effects of drought, (7) poor soil texture and workability, (8) increased surface washing and erosion of land surface, and (9) alkali and saline conditions. Other factors such as poorer roads and highways, decreased tax revenues, etc., might be added to this list. The advantages of adequate drainage …


Consumptive Use Of Water By Major Farm Crops In The Milford District Of Utah, Glen H. Calder May 1953

Consumptive Use Of Water By Major Farm Crops In The Milford District Of Utah, Glen H. Calder

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Irrigation water supplies in the arid West have become limited, yet the area of irrigable land is still extensive. To realize the more efficient use of the available supply, or for planning new irrigation projects, studies are needed to determine how much water is consumptively used by farm crops and native vegetation.


Welded Highway Bridges, James G. Clark Apr 1953

Welded Highway Bridges, James G. Clark

Kentucky's Annual Forum on Transportation

No abstract provided.


Highway Drainage, Eugene M. West Apr 1953

Highway Drainage, Eugene M. West

Kentucky's Annual Forum on Transportation

No abstract provided.


Commercial And Private Entrances, Robert M. Wray Apr 1953

Commercial And Private Entrances, Robert M. Wray

Kentucky's Annual Forum on Transportation

No abstract provided.


Seventeen Years Of Rural Highway Aid, What It Has Meant To The Counties And Suggestions For Improvement Of Programs, Richard Thompson Apr 1953

Seventeen Years Of Rural Highway Aid, What It Has Meant To The Counties And Suggestions For Improvement Of Programs, Richard Thompson

Kentucky's Annual Forum on Transportation

No abstract provided.


Suitable Steels For Welded Bridges And Buildings, W. P. Gerhart, S. A. Greenberg Apr 1953

Suitable Steels For Welded Bridges And Buildings, W. P. Gerhart, S. A. Greenberg

Kentucky's Annual Forum on Transportation

No abstract provided.


Highways In Civil Defense, R. E. Bagby Apr 1953

Highways In Civil Defense, R. E. Bagby

Kentucky's Annual Forum on Transportation

No abstract provided.


Why Urban Expressways, T. H. Cutler Apr 1953

Why Urban Expressways, T. H. Cutler

Kentucky's Annual Forum on Transportation

No abstract provided.


Drainage And Structure — Maintenance, T. J. Hopgood Apr 1953

Drainage And Structure — Maintenance, T. J. Hopgood

Kentucky's Annual Forum on Transportation

No abstract provided.


Maintenance Of Road Surfaces, Shoulders, Ditches, And Right Of Way Areas, Dewey Sparks Apr 1953

Maintenance Of Road Surfaces, Shoulders, Ditches, And Right Of Way Areas, Dewey Sparks

Kentucky's Annual Forum on Transportation

No abstract provided.


The Alpha And Omega Of Highway Transportation, Ben F. Ostergren Apr 1953

The Alpha And Omega Of Highway Transportation, Ben F. Ostergren

Kentucky's Annual Forum on Transportation

No abstract provided.


Maintenance And Operation Of Equipment, W. A. Tincher Apr 1953

Maintenance And Operation Of Equipment, W. A. Tincher

Kentucky's Annual Forum on Transportation

No abstract provided.


The Advantages And Economy In The Use Of Calcium Chloride In The Maintenance Of Unpaved Roads, T. D. Williams Apr 1953

The Advantages And Economy In The Use Of Calcium Chloride In The Maintenance Of Unpaved Roads, T. D. Williams

Kentucky's Annual Forum on Transportation

No abstract provided.


Welcome And Greetings To County Officials, B. T. Moynahan Apr 1953

Welcome And Greetings To County Officials, B. T. Moynahan

Kentucky's Annual Forum on Transportation

No abstract provided.


Progressive Tendencies In Highway Taxing And Spending Policies, C. M. Nelson Apr 1953

Progressive Tendencies In Highway Taxing And Spending Policies, C. M. Nelson

Kentucky's Annual Forum on Transportation

No abstract provided.


Kentucky Highway Conference Program [1953], Kentucky Transportation Center Apr 1953

Kentucky Highway Conference Program [1953], Kentucky Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.


Report No. 2 On A Test Road For The Evaluation Of Sandstone As An Aggregate In Plant-Mix Bituminous Pavements, Ellis G. Williams Apr 1953

Report No. 2 On A Test Road For The Evaluation Of Sandstone As An Aggregate In Plant-Mix Bituminous Pavements, Ellis G. Williams

Kentucky Transportation Center Research Report

This report which presents results from additional study of the Sandstone Test Road located on S.R. 30 in Magoffin and Breathitt Counties, is a supplement to Report No. 1 dated April, 1952. The project consisted of a laboratory investigation and construction of a 20-mile test road, with all the original work carried out over a period from early 1950 to November 1951.

Details concerning both laboratory and field work are contained in Report No. 1 and need not be discussed here. However, to keep the general objectives of the study clear, they are restated as follows:

  1. To develop comprehensive information …


Oil Shales In Montana, Richard N. Miller Feb 1953

Oil Shales In Montana, Richard N. Miller

Bachelors Theses and Reports, 1928 - 1970

Montana has long been known to have very large resources of coal and oil, and undetermined amounts of oil shale. The reserves of coal and oil have been proven, in part, and have been produced commercially, but not much is known about the extent and apparent value of the oil shales. Under present .conditions, and according to standards set by the United States Bureau of Mines, the shales are not of commercial value. They are, however, a potentially valuable mineral resource, and portions of them will possibly be utilized, although not in the near future.


Application Of Geology To Highway Engineering In Kentucky, L. E. Gregg, James H. Havens Feb 1953

Application Of Geology To Highway Engineering In Kentucky, L. E. Gregg, James H. Havens

Kentucky Transportation Center Research Report

Kentucky, too, is a state where geology abounds. Little credit for this, however, lies with the highway field, because such a prosaic subject is frequently overshadowed by such features as Mammoth Cave, Sky Bridge, Cumberland Falls, Pine Mountain, and extensive underground mineral deposits. Nevertheless; the influence of geology in the highway industry is growing, and it is obvious that some potential contributions have not yet been realized.


A Combination Waterbound Macadam And Dense-Graded Aggregate Base For Flexible Pavements, William B. Drake Jan 1953

A Combination Waterbound Macadam And Dense-Graded Aggregate Base For Flexible Pavements, William B. Drake

Kentucky Transportation Center Research Report

This paper is concerned with a flexible base designed primarily to improve the riding qualities of high-type bituminous pavements. Difficulties in control of grades and sections with modern methods of macadam base construction have emphasized needs for effective finishing procedures.

In the project described, an 8-in. base was built in two courses, the lower waterbound macadam being overlain by a densegraded aggregate material suitable for spreading and shaping with a power grader. The base was then surfaced with two courses of a hot bituminous plant mix.

Observations and measurements showed that the combination could be built satisfactorily; construction entailed more …


A Historical Study Of The Influence Of The Railroad Upon Ogden, Utah, 1868-1875, Alma W. Hansen Jan 1953

A Historical Study Of The Influence Of The Railroad Upon Ogden, Utah, 1868-1875, Alma W. Hansen

Theses and Dissertations

The general plan of this study is to sketch the beginning of Ogden settlement and the early history up to the beginnings of the influence of the coming of the railroad, then to follow in more detail the conditions and influences that developed as the railroad was built and the changes that followed the completion of the line.