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Unity In Symbols Of Units, Zaboj Vincent Harvalik

Journal of the Minnesota Academy of Science

No abstract provided.

Progress Report On The Ground-Water Resources Of The Las Vegas Artesian Basin, Nevada, George B. Maxey, C. Harry Jameson

Publications (WR)

Whether the tremendously increased population acquired by Las Vegas in the years 1940 to 1942 will be retained cannot at present be foretold. However, the valley will undoubtedly be expected to support a considerably larger population than it did at any time prior to 1940, and continually increasing demands on the water supply for innumerable pcacetimc activities must be anticipated. Therefore, a sound evaluation of tho ground water resources of Las Vegas Valley is directly in line with the other wisely progressive planning programs which are now operating or are taking shape in the valley as well as in the …

Dielectric Properties Of Various Organic Compounds, Joyce Elaine Eiling

Bachelors’ Theses

Condensers are widely used for many purposes. These devices are employed in one form or another in radio transmitting and allied industries such as television and amplifier circuits. They are used in automatic equipment, telephone, telegraph, and railway signal equipment as well as in condenser type motors. Condensers reduce sparking and arcing at contact relay points, switches, circuit breakers, time clocks, and thermostats. A vital part of a condenser is the dielectric. In present day condensers mineral oil is used extensively.

The purpose of this investigation is to study other organic compounds in an effort to find a good di …

Occupational Chemical Hazards In Industries Of Louisville And Jefferson County., Morgan Brown Lewman

Electronic Theses and Dissertations

The facts and conclusions presented in the following pages are the results of figures gathered during two and one half years of work as an Industrial Hygiene Engineer for the Louisville and Jefferson County Health Department. The factual information was acquired from many sources including extensive reading to which reference is made of the more recent publications in the bibliography and also from correspondence and discussions with authorities in various fields. Much data was gained from "in-service training" received at the United States Public Health Service; Bureau of Industrial Hygiene, Bethesda, Maryland; University of Michigan; National Conference of Governmental Industrial …

Advertising Brochure: Case S Series, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

The Solubility Of Zinc Ethyl Xanthate In Water, Thomas M. Mckenzie

Bachelors Theses and Reports, 1928 - 1970

A determination of the solubility of zinc ethyl xanthate was attempted by measuring the refractive index of a saturated solution of that salt. The small increment in refractive index effected by adding zinc ethyl xanthate to water in saturation quantities rendered measurements difficult and of dubious accuracy.

Hydrogen Overvoltage Of Cadmium Bismuth And Antimony Bismuth Alloys, Edwin W. Stevens

Bachelors Theses and Reports, 1928 - 1970

A method to measure hydrogen overvoltage was devel­oped and checked with metals of known overvoltage. Alloys of bismuth and antimony and of bismuth and cad­mium were prepared and their overvoltages determined.

The Electrodeposition Of Copper-Cobalt Alloys, Richard L. Dunn

Bachelors Theses and Reports, 1928 - 1970

An attempt was made to deposit a 50:50 copper-cobalt alloy from various sulfate electrolytes. No true 50:50 alloy was obtained but various mixtures of cobalt and copper rich crystals were deposited.

Subject And Author Index Of The Technical Memorandums Of The U. S. National Advisory Committee For Aeronautics, Chrysler Engineering Library, Robert L. Bolin Depositor

United States National Aeronautics and Space Administration: Publications

The National Advisory Committee for Aeronautics (NACA) is a federal agency founded in 1915. It was a predecessor agency to National Aeronautics and Space Administration (NASA) which was formed in 1958.

Many of the reports listed here are available in full text through the TRAIL Technical Report Archive & Image Library. http://www.technicalreports.org/trail/search/ Many are also available from the NASA Technical Reports Server (NTRS). http://ntrs.nasa.gov/search.jsp

121 pp. + cover

The Monadnock Volume 18, Number 1, May 1944, Clark University Geographical Society

The Monadnock (Clark Geographical Society)

Volume 18, Issue 1 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).

Corona Discharge From Antenna Wire: A First Partial Report, Robert Katz

Robert Katz Publications

Purpose: 1. To examine the conditions for corona at the surface of a wire. This report is a theoretical discussion. No test procedure was used.

Conclusions:
1. Calculation of the gradient at the surface of the fixed-wire liaison antenna (bare copperweld, .040" diameter) on the B-17 airplane indicates that it is of the order of 200 times the gradient measured at the top generating voltmeter.
2. Further work will be done by the Special Devices Branch in an attempt to determine the conditions under which insulated wire goes into corona.

Fluorite Near Silver Bow, Montana, Charles V. Campbell

Bachelors Theses and Reports, 1928 - 1970

The wartime demand for fluorspar has caused renewed interest in fluorite deposits. Near Silver Bow, Montana, a deposit of massive, coarsely crystalline fluorspar, which has not been described in the literature, has attracted the atten­tion of the United States Geological Survey.

The Incompatibility Of Certain Alcohol And Soap Frothers, John Thomas Doherty

Bachelors Theses and Reports, 1928 - 1970

The purpose of this thesis is to elucidate this phenomena of frother incompatibility, and to offer an explanation based upon several divergent lines of investigation. The research was limited to four common frothing agents, namely, pine oil, n-amyl alcohol, sodium oleate, and sodium lauryl sulphate (Dreft).

Production Of Iron-Tin Compacts By Powder Metallurgy And A Synopsis Of Their Principle Properties, Matt C. Andrews

Bachelors Theses and Reports, 1928 - 1970

This thesis is concerned primarily with the production of metal powder compacts of iron and tin. In producing these compacts, the effects of process­ing variables on some of the essential properties of the pellets made were investigated.

Hardness And Electrical Resistivity Of Copper-Iron Powder Metal Compacts, Fred A. Foyle Jr.

Bachelors Theses and Reports, 1928 - 1970

Although powder metallurgical methods have been used for years to fabricate tungsten and platinum, very little scientific data have been recorded until the beginning of this century. A large percentage of all commercial production at present is based upon past practice rather than upon scientific knowledge.

Methods Of Determining Porosity And Spatter Losses Of Arc Welds, Campbell W. F. Funk

Bachelors Theses and Reports, 1928 - 1970

The original objective of this project was to determine the effect of varying current intensity and electrode coating composition upon the spatter losses and porosity of arc welds made by alternating current. This subject was suggested by the Welding Research Council of the Engineering Foundation, which is a clearing house for welding research in order to avoid du­plication of work.

Age Hardening Of Copper Antimony Alloys, William R. Stern

Bachelors Theses and Reports, 1928 - 1970

A large number of alloys of varying percentages of copper and antimony were prepared. These alloys were treated in various ways which might be expected to produce age hardening. The effect of cold working was studied in the range where the alloys were malleable.

The Electrodeposition Of Iron-Manganese Alloys, Raymond D. Magorien

Bachelors Theses and Reports, 1928 - 1970

An electrodeposition of an iron-manganese alloy was made from the same conditions determined by previous re­search. Various addition agents were experimented with in an attempt to produce better conditions for electro-deposition. It was found advantageous to add small a­mounts of sodium lauryl sulfate and ammonium sulfite to the electrolyte.

An Isopach Map And Discussion Of The Marine Jurassic Of Western United Sates And Canada, John H. Ferry

Bachelors Theses and Reports, 1928 - 1970

Recent demands for petroleum to carry on the war effort have resulted in widespread prospecting in the northern Great Plains. Nearly all oil wells now drilled are of a depth to penetrate the marine Jurassic formations. It is known that these strata differ in thickness from place to place, but information of distribution, thickness, and lithology has not yet been compiled.

Making Beats Visible, Carl J. Ulrich

Journal of the Minnesota Academy of Science

No abstract provided.

The Theory Of The Impulse Function For Oscillatory Mechanical And Electrical Systems, E. L. Hill

Journal of the Minnesota Academy of Science

No abstract provided.

Some Emission Phenomena Observed On Commercial Photocells, Zaboj V. Harvalik

Journal of the Minnesota Academy of Science

No abstract provided.

Electroplating Of Chromium Upon A Nickel Plated Magnesium Alloy, Harmel Dawson

Bachelors Theses and Reports, 1928 - 1970

A nickel plating operation for magnesium alloys was investigated and proved successful in plating a small sample of a typical commercial magnesium alloy, Dowmetal J1.

Aircraft Electronic Instrumentation, A. P. Upton

Journal of the Minnesota Academy of Science

No abstract provided.

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.

Geology Of Webster Parish., James Littell Martin

LSU Historical Dissertations and Theses

No abstract provided.

Laboratory Tests On Gravelly Material For Use In The Pervious Zones Of Newton Dam, Newton Project, Utah, W.G. Holtz

Elusive Documents

A compaction test was performed on the soil (-1/2") material, and mechanical analysis, specific gravity, and percolation-consolidation test was made in a large (19&1/2" diameter) percolator, cylinder and the material was well compacted into the cylinder. A consolidating load equivalent to a 20-foot fill was applied. Because it was believed that some of the fine sand might be transported through the gravel and rock by the percolating water, a 14-mesh screen and a 2-inch later of clear fine gravel (3/16" - 3/8") was placed over the gravelly material being tested. After the percolation-consolidation test was completed, the screen and fine …

Flotation Of A Complex Sulphide Ore Containing Tetrahedrite, James C. O'Dea, Lorimer W. Hoar

Bachelors Theses and Reports, 1928 - 1970

The ore investigated in this thesis is a zinc-copper-lead ore. Microscopic analysis of this complex sulphide ore showed it to contain pyrite_, sphalerite, arsenopyrite, galena, chalcopyrite, tetrahedrite, and covellite, with quartz as the gangue constituent.

The Electrodeposition Of Chromium From Trivalent Salt Solutions, Bahri Ersoz

Bachelors Theses and Reports, 1928 - 1970

The enormous number of previous experiments and researches for the improvement of the commercial chromic acid bath, did not succeed even in the partial elimination of any one of the disadvantages of chromic acid bath. This led the author to believe that the poor performance is an inherent quality of the chromic acid bath, and is due to the fact that the deposition occurs from the higher state of oxidation.

Bright Electroplating Of Copper In The Acid Bath, Elwood K. Jensen

Bachelors Theses and Reports, 1928 - 1970

Plating of various objects with mirror-like surfaces of chromium, nickel, and other metals has expanded considerably during the past decade, and now ranks as an important enterprise, particularly with respect to the automotive industry.