Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network

Open Access. Powered by Scholars. Published by Universities.®

Engineering

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 194911 - 194940 of 196359

Full-Text Articles in Entire DC Network

Fm 30-15, Examination Of Enemy Personnel, Repatriates, Documents, And Materiel. July 22, 1940, Robert Bolin Depositor Jul 1940

Fm 30-15, Examination Of Enemy Personnel, Repatriates, Documents, And Materiel. July 22, 1940, Robert Bolin Depositor

United States Department of Defense Military Intelligence

Three-fourth of this manual deals with the treatment of enemy personnel and repatriates, one quarter with documents, and only one brief section, about 1 page, with enemy materiel.


Cornell University School Of Civil Engineering Tests On Light Beams Of Cold-Formed Steel, Cornell University School Of Civil Engineering Jun 1940

Cornell University School Of Civil Engineering Tests On Light Beams Of Cold-Formed Steel, Cornell University School Of Civil Engineering

CCFSS Library (1939 - present)

I. SCOPE OF THIS REPORT All tests on the present series of 24 beams (series D and E) have been completed. In particular since the time of the 10th Progress Report the following tests have been carried out: Failure tests on eleven beams, viz. D-18-18-88a and b; E-18-14-88a and b; E-18-16-83a and b; D-18-14-88a and b; D-18-16-88a and b; E-18-12-816a. In addition further investigations have been made on the bottom flanges of the beams D-18-16-88a and b and E-18-12-816a.


School Of Civil Engineering, Cornell University Tests On Cold Formed Steel Studs For The American Iron And Steel Institute, Cornell University School Of Civil Engineering Jun 1940

School Of Civil Engineering, Cornell University Tests On Cold Formed Steel Studs For The American Iron And Steel Institute, Cornell University School Of Civil Engineering

CCFSS Library (1939 - present)

I. SCOPE OF THIS REPORT This report presents: (a) Results of buckling tests on Type A studs with "minimum restraint" or "actual" end condition. (b) Diagrams summarizing results of all tests on individual studs.


Newark Engineering Notes, Volume 3, No. 4, May, 1940, Newark College Of Engineering May 1940

Newark Engineering Notes, Volume 3, No. 4, May, 1940, Newark College Of Engineering

Newark Engineering Notes

A journal by the administration, faculty and alumni of the Newark College of Engineering. This issue includes: "The President's Diary" by Allan R. Cullimore "The Engineer in Public Service" by Joseph M. Byrne, Jr. "Peter Homack Wins Award" "Why Should I Study This?" by James A. Bradley "The General Quadratic, or Conic, Angle and Its Functions" by Albert A. Nims "An Automatic Slide-Back V. T. Voltmeter" by Philip E. Volz "Civilian Pilot Training Course" "An Optical Method of Visualizing Low Velocity Air Flow" by Stanley Corrsin "Promotions and Appointments" "Co-Operative Plan for Graduate Work "General Motors Assembly of College Students" …


The Age-Hardening Of Aluminum With Mgzn2, Sidney E. Worthen May 1940

The Age-Hardening Of Aluminum With Mgzn2, Sidney E. Worthen

Bachelors Theses and Reports, 1928 - 1970

The purpose of this thesis is to investigate the age-hardening of aluminum with magnesium and zinc in such proportions as to conform to the compound MgZn2.

Because of a lack of time and proper equipment, the only property investigated was the hardness as indicated by the Rockwell Superficial Hardness Tester.


The Investigation Of Different Variables In The Assaying Of Silver Cyanide Solution, Warren M. Mahan May 1940

The Investigation Of Different Variables In The Assaying Of Silver Cyanide Solution, Warren M. Mahan

Bachelors Theses and Reports, 1928 - 1970

The assaying of gold and silver cyanide solutions is by no means new. The first method of analysis which is given in the literature is an evaporation method by S. B. Christy in 1896. However, the fire assaying of gold and silver dates further back than this. There is a method of fire assaying for gold and silver given in literature as early as 1556 in Georgius, Agricola’s De Re Metallica book.


The Measurement Of Current Efficiency In Zinc Sulphate Electrolytes Containing Antimony And Cobalt By Hydrogen Evolution, Arthur R. Hard May 1940

The Measurement Of Current Efficiency In Zinc Sulphate Electrolytes Containing Antimony And Cobalt By Hydrogen Evolution, Arthur R. Hard

Bachelors Theses and Reports, 1928 - 1970

The measurement of current efficiency by hydrogen evolution is based on the assumption that the portion of the current which deposits no zinc will release hydrogen. This assumption is correct for solutions containing no impurities electropositive to zinc.


Cornell University School Of Civil Engineering Tests On Light Beams Of Cold-Formed Steel, Cornell University School Of Civil Engineering May 1940

Cornell University School Of Civil Engineering Tests On Light Beams Of Cold-Formed Steel, Cornell University School Of Civil Engineering

CCFSS Library (1939 - present)

I. SCOPE OF THIS REPORT At the present time failure tests are being carried out on the 24 beams series D and E. To date the following beams have been tested: D-18-16-816a and E-18-16-816a and b; E-18-14-816a and b; D-18-14-816a and b; E-18-12-816b; D-18-816a and b; E-18-18-88a and b; total - 13 beams. The failure tests on those beams are carried out in a way different from data used heretofore (see section II of the report). As a result very extensive data are obtained for each of these beams. Since the evaluation of these data will require considerable time it …


American Iron And Steel Institute Tests On Cold Formed Steel Studs, American Iron And Steel Institute May 1940

American Iron And Steel Institute Tests On Cold Formed Steel Studs, American Iron And Steel Institute

CCFSS Library (1939 - present)

I. SCOPE This report presents results of buckling tests on: Type A studs with free-ends condition, Type B studs with "minimum restraint" or "actual" end condition.


The Geology And Mineralogy Of The Independence Mining District, Alan Kuhlman May 1940

The Geology And Mineralogy Of The Independence Mining District, Alan Kuhlman

Bachelors Theses and Reports, 1928 - 1970

From 1888 until 1893 the district was a booming mining camp. Seven stamp mills were running and ore was be­ing mined from the Independence, King Solomon, Poorman, Golden, Hidden Treasure and Crown claims. The town of Independence, which was on the Boulder River at the fork of Basin Creek, boasted a population of 400 people.


A Study Of Metallic Eutectics, Robert P. Corbett May 1940

A Study Of Metallic Eutectics, Robert P. Corbett

Bachelors Theses and Reports, 1928 - 1970

All of the metals have definite melting points. When a metal is heated above the melting point, it exists as a liquid. Now if the melt is allowed to cool, it will solidify when a temperature corresponding to the melting point is reached.

However, if one metal is added to another metal, both of which are mutually soluble in the liquid state, a certain effect can be noted. The melt will not solid­ify when the melting point of the pure metal is reached, but will freeze at a lower temperature.


Areal Geology Of The Post-Paleozoic Surface Of The Northwest Plains, William M. Broderick May 1940

Areal Geology Of The Post-Paleozoic Surface Of The Northwest Plains, William M. Broderick

Bachelors Theses and Reports, 1928 - 1970

Probably most of the area included in this report has been ex­amined to some extent by oil geologists, and most, if not all, of the important domes have been discovered and surveyed thoroughly. In parts of the area, the bedrock is covered by glacial drift or alluvium materi­al, but it is reasonable to believe that no new domal structure will be found. This means that surface examination alone will be insufficient in locating new oil fields, so future prospecting will be dependent, to a great extent, on studies of sub-surface stratigraphy.


A Study Of The Concentration Of A Copper-Zinc Ore., Kenneth L. M. Dodd May 1940

A Study Of The Concentration Of A Copper-Zinc Ore., Kenneth L. M. Dodd

Bachelors Theses and Reports, 1928 - 1970

The ore under investigation in this thesis is a copper-zinc ore which came from the state of New Mexico. The exact location is unobtainable. The purpose of the investigation was to determine the most effective means of concentration of the valuable min­erals present in the ore.


The Testing And Concentration Of A Low Grade Copper-Nickel Ore., Laurence T. Eck May 1940

The Testing And Concentration Of A Low Grade Copper-Nickel Ore., Laurence T. Eck

Bachelors Theses and Reports, 1928 - 1970

The purpose of this thesis is to investigate the possi­bility of concentrating a low grade copper-nickel ore, to determine the most effective method of concentration, and to attempt to draw some conclusions to determine whether or not the concentrates produced would be of sufficient high grade to make the recovery of nickel and copper a profit­able enterprise.


Geology And Ore Deposits Of The Jardine Mining District, Park County, Montana, Douglas M. Dowell May 1940

Geology And Ore Deposits Of The Jardine Mining District, Park County, Montana, Douglas M. Dowell

Bachelors Theses and Reports, 1928 - 1970

The Jardine Mining district is in the extreme southern part of Park County, Montana. Jardine is five and one-half miles northeast of Gardiner, Montana, the northern entrance to Yellowstone National Park.


The Electrolytic Recovery Of Copper And Zinc From Scrap Brass With Special Reference To Lead-Bearing Brass., Frederick A. Hames May 1940

The Electrolytic Recovery Of Copper And Zinc From Scrap Brass With Special Reference To Lead-Bearing Brass., Frederick A. Hames

Bachelors Theses and Reports, 1928 - 1970

Several methods have been investigated, with some success, for treating scrap brass to recover copper and zinc, either as pure metals or as salts of the metals. One of the more promising of these methods is electrolysis in sulfate solution for the recovery of pure copper and zinc.


Electrolysis Of Molten Mixtures Of Galena And Lead Chloride., Donald Q. Cole May 1940

Electrolysis Of Molten Mixtures Of Galena And Lead Chloride., Donald Q. Cole

Bachelors Theses and Reports, 1928 - 1970

Electrolysis of molten mixtures of lead chloride and galena was carried out under various conditions of temperature, time, composition, and current densities; without a diaphram, and with various diaphrams. Continuous runs, with necessary additions of lead sulfide and lead chloride to maintain a melt of the proper composition, were attempted on a small scale.


A Study Of The Effect Of Third Metals On The Wetting Properties Of Solders, William L. O'Brien May 1940

A Study Of The Effect Of Third Metals On The Wetting Properties Of Solders, William L. O'Brien

Bachelors Theses and Reports, 1928 - 1970

Solders are not new alloys, since they were known in late Roman times when they were mentioned by Pliny. These solders differed very little from our modern ones. Tertiarium, consisting of one part of tin to two parts of lead, is known today as plumbers solder; and argentarium, consisting of equal parts of lend and tin, is still extensively used for many purposes.


Geology And Ore Deposits Of The Clinton Mining District, James F. Piquette May 1940

Geology And Ore Deposits Of The Clinton Mining District, James F. Piquette

Bachelors Theses and Reports, 1928 - 1970

This report includes the results of geological investigation of the Clinton Mining District and the Hidden Treasure Mine.The Clinton Mining District is an unorganized mining dis­trict situated in the Garnet Range two and one-half miles northeast of the town of Clinton, Montana, which is on the Northern Pacific Railway and the Chicago, Milwaukee, St. Paul, and Pacific Railroad seventeen miles east of the city of Missoula.

The district is in the same range of mountains as the Gar­net Mining District and the drainage from the district covered is to the south into the Hell Gate or Clarks Fork of …


The Testing And Concentration Of A Tungsten Ore, Turdat S. Simone May 1940

The Testing And Concentration Of A Tungsten Ore, Turdat S. Simone

Bachelors Theses and Reports, 1928 - 1970

At the present time the principal uses for tungsten lie in the manufacture of ferro-alloys and tungsten steels. Due to it’s hardening and strengthening characteristics it holds an important position among steel hardening metals. The great rush for it’s production during the World War years clearly points to it’s importance in the manufacture of armament.


Report On The Ermont Mine Sec. 35, T. 6 S., R. 11 W., Beaverhead County, Montana, Chester Harkins Steele May 1940

Report On The Ermont Mine Sec. 35, T. 6 S., R. 11 W., Beaverhead County, Montana, Chester Harkins Steele

Bachelors Theses and Reports, 1928 - 1970

An examination of the Ermont Mine was requested by the owners, Messrs. J. R. Bowles and R. B. Caswell, to determine the amount and grade of ore developed, the advisability of constructing a mill at the present time, and to recommend future development work.


The Age-Hardening Of Magnesium With Aluminum And Zinc, K. Deatley Loughridge May 1940

The Age-Hardening Of Magnesium With Aluminum And Zinc, K. Deatley Loughridge

Bachelors Theses and Reports, 1928 - 1970

Magnesium is one of the most active elements and forms oxides, nitrides, and carbides, but not hydrides. Due to its activity, low melting point, low strength when unalloyed, and the difficulty with which it is worked, magnesium has not been and is not at present well developed.


A Study Of Eutectics Of Certain Fused Salts, William D. Trethewey May 1940

A Study Of Eutectics Of Certain Fused Salts, William D. Trethewey

Bachelors Theses and Reports, 1928 - 1970

Considerable work has been done investigating the freezing point curves of fused salts, but little has been written describing the appearance of their eutectic structures when observed under the microscope.


Adjusting Planters And Listers For Sorghums, L. W. Hurlbut May 1940

Adjusting Planters And Listers For Sorghums, L. W. Hurlbut

Nebraska Agricultural Experiment Station: Historical Circulars

It is the purpose of this circular to present data and suggestions that will aid the farmer in attaining greater success in the planting of sorghum. It has been prepared primarily for the machine operator; and, although it is not a complete discussion of planters and listers, it contains highly practical suggestions regarding the adjustment of the corn planter and lister for sorghum seed.


Engineering In Traffic Safety In Utah, Donald T. Hunter May 1940

Engineering In Traffic Safety In Utah, Donald T. Hunter

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Traffic safety involves accident-free movement of physical entities. It includes all means of transportation and is a function of mobility, an important variable affecting directly the mortality rate and increase of accidents. All transportation groups have coincidentally with or without increase of mobility been attempting to reduce accidents. Those notably succeeding are the shipping, railroad, and airline interests. The operating motor vehicle and pedestrian groups have failed conspicuously.

The early means of attaining a better degree of traffic safety in the motor vehicle and pedestrian groups were based on opinions, and though rational, were incomplete because of the dynamic and …


Tests On Cold Formed Steel Studs American Iron And Steel Institute, American Iron And Steel Institute Apr 1940

Tests On Cold Formed Steel Studs American Iron And Steel Institute, American Iron And Steel Institute

CCFSS Library (1939 - present)

I. PURPOSE OF THE INVESTIGATION The purpose of the investigation is to provide technical information for the development of standard specifications for steel stud wall construction, suitable for inclusion in building codes.


Cornell University School Of Civil Engineering Tests On Light Beams Of Cold-Formed Steel, Cornell University School Of Civil Engineering Apr 1940

Cornell University School Of Civil Engineering Tests On Light Beams Of Cold-Formed Steel, Cornell University School Of Civil Engineering

CCFSS Library (1939 - present)

I. SCOPE OF THIS REPORT 1. A stress investigation has been made at the load points of beam E-18-14-88a for spans of 6 and 12 ft. with center load and for spans of 12 ft. with quarter point loading. 2. A similar investigation has been made on beam E-18-12-816a.


Newark Engineering Notes, Volume 3, No. 3, March, 1940, Newark College Of Engineering Mar 1940

Newark Engineering Notes, Volume 3, No. 3, March, 1940, Newark College Of Engineering

Newark Engineering Notes

A journal by the administration, faculty and alumni of the Newark College of Engineering. This issue includes: "The President's Diary" by Allan R. Cullimore "The Vector Idea in Trigonometry" by Edward Baker "Interchange Design on the Pennsylvania Turnpike" by Harvey W. Sarven "A Demonstration Model for Rigid Frame Theory" by William S. LaLonde, Jr. "The Purpose of Visitors' Day" by Frank A. Grammer "New Horizons of Science" by Clarence H.Stephans "The Student Engineering Societies" "Student Chapter Wins Award Third Time" "Professionalities" "What Our Readers Say"


Cornell University School Of Civil Engineering Tests On Light Beams Of Cold-Formed Steel, Cornell University School Of Civil Engineering Mar 1940

Cornell University School Of Civil Engineering Tests On Light Beams Of Cold-Formed Steel, Cornell University School Of Civil Engineering

CCFSS Library (1939 - present)

I. SCOPE OF THIS REPORT 1. A.stress investigation has been made on beam E-18-12-816 b at the load points with 6 and 12 ft. span and center load and with 12 ft. span and quarter point load. 2. The results of these tests seem to show that, after the completion of similar tests on two more beams of the present shipment enough data will have been gathered to answer the question of stress distribution. It was therefore thought advisable to carry out a more complete investigation on this beam. For this purpose the stress distribution at five additional cross sections …


Cornell University School Of Civil Engineering Tests On Light Beams Of Cold-Formed Steel, Cornell University School Of Civil Engineering Feb 1940

Cornell University School Of Civil Engineering Tests On Light Beams Of Cold-Formed Steel, Cornell University School Of Civil Engineering

CCFSS Library (1939 - present)

I. OBJECT OF THIS REPORT 1. Investigation of the stress distribution in the bottom flange of beam A-14-612a after its reconstruction. 2. Investigation of the strain distribution in the bottom flange of beam D-18-12-816a. 3. Observations on beams E-18-12-816a and b.