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Articles 68431 - 68460 of 69081

Full-Text Articles in Physical Sciences and Mathematics

Upper Mississippian Faunas Of Western Montana, James King May 1942

Upper Mississippian Faunas Of Western Montana, James King

Bachelors Theses and Reports, 1928 - 1970

The author has made a study of an assemblage of fossils from the Blacktail Range near Dillon Montana with the purpose in view of attempting a correlation of that group with the fauna of the Big Snowy Group. Fossils have also been obtained from a limestone formation in northwestern Montana and from four different areas in the Amsden formation in central and western Mont­ana.


The Velocity Of Falling Particles In A Liquid Medium, Elliott Coldwater May 1942

The Velocity Of Falling Particles In A Liquid Medium, Elliott Coldwater

Bachelors Theses and Reports, 1928 - 1970

The investigation was prompted by the fact that there seemed to be some discrepancy between the results published by Richards,and the empirical figures used in classification and in gravity concentration. Further, the work of Richards was restricted to quartz and galena whereas this study also includes pyrite and calcite.


Age Hardening Of Copper-Aluminum Alloy Castings, Frank Randall May 1942

Age Hardening Of Copper-Aluminum Alloy Castings, Frank Randall

Bachelors Theses and Reports, 1928 - 1970

Age hardening occurs in alloys of the solid solution type containing a hardening constituent, be it metal or metallic compound, which is more soluble in the solvent phase at higher temperatures than at lower ones.


Polishing Mineral Specimens By The Use Of An Optical Polishing Machine, Wilbur J. Guay May 1942

Polishing Mineral Specimens By The Use Of An Optical Polishing Machine, Wilbur J. Guay

Bachelors Theses and Reports, 1928 - 1970

The problem in this investigation was to determine if mineral specimens mounted in bakelite, or lucite, could be polished for microscopic examination by the use of an optical polishing machine, and if this method would cut down the length of time required to polish specimens by the methods now in use.


Helena And Ennis Talc Deposits, Howard N. Anderson May 1942

Helena And Ennis Talc Deposits, Howard N. Anderson

Bachelors Theses and Reports, 1928 - 1970

The purpose of this report is to collect geologic data concerning two Montana talc occurrences at Helena and Ennis and to offer some explanation as to their origin. The two deposits cited are in somewhat similar lithologic settings and both possess the same mineralogical and structural features. Because of this similarity only the Helena deposit is covered in detail.


Insoluble Residues Of The Lower Mississippian Limestones Of The Madison Group, Fred G. Lines May 1942

Insoluble Residues Of The Lower Mississippian Limestones Of The Madison Group, Fred G. Lines

Bachelors Theses and Reports, 1928 - 1970

The correlation of non-fossiliferous drill samples is one of the difficult problems that is en­countered in sub-surface stratigraphy. In order to truly correlate a formation, it must have some dis tinctive features and have an areal persistence of these features. These requirements are probably met best by limestone.


The Application Of A Laboratory Induction Furnace To The Selective Smelting Of A Montana Chromite Concentrate, James H. Mcmahon May 1942

The Application Of A Laboratory Induction Furnace To The Selective Smelting Of A Montana Chromite Concentrate, James H. Mcmahon

Bachelors Theses and Reports, 1928 - 1970

The purpose of this experimental work was to determine with the utilization of a laboratory sized induction furnace a method whereby a high-iron Montana chromite concentrate could be successfully smelted to yield a product suitable for the subsequent production of standard ferrochrome.


The Determination Of Aluminum In The Presence Of Manganese And Iron By The Use Of A Mercury Cathode, William R. Opie May 1942

The Determination Of Aluminum In The Presence Of Manganese And Iron By The Use Of A Mercury Cathode, William R. Opie

Bachelors Theses and Reports, 1928 - 1970

Since 1880, when Wolcott Gibbs made the suggestion that mercury could be used as a cathode in gravimetric electroanalysis, many articles have appeared in literature either criticizing the method or citing successful results which have been obtained by it.


Testing And Concentration Of A Low Grade Gold Ore From Marysville, Montana, John B. White, Jr. May 1942

Testing And Concentration Of A Low Grade Gold Ore From Marysville, Montana, John B. White, Jr.

Bachelors Theses and Reports, 1928 - 1970

The purpose of this thesis was to investigate and attempt to concentrate low grade cyanided tailings rejected from the old Montana Mining and milling Company's mill situated 4 miles below the town of Marysville, Montana.


The Use Of Organic Reagents In Inorganic Analysis, With Applications To Qualitative Tests For Certain Metallic Ions, Wallace S. Brey Jr. May 1942

The Use Of Organic Reagents In Inorganic Analysis, With Applications To Qualitative Tests For Certain Metallic Ions, Wallace S. Brey Jr.

Chemistry Honors Papers

This 39 page thesis presents a survey of the theory and general principles of the organic reactions followed by detailed discussion of several qualitative tests for metallic ions with experimental results on sensitivity and interference and consideration of the conditions under which the tests may be applied.


A Study Of The Hydrolysis Of P-Bromoacetanilide, Franklyn Miller May 1942

A Study Of The Hydrolysis Of P-Bromoacetanilide, Franklyn Miller

Chemistry Honors Papers

This 24 page thesis examines reactions in the fields of organic and physical chemistry.


A Chromium Plating Bath Containing Sodium Benzenesulfonate Instead Of Sulfuric Acid, Edward Burleigh May 1942

A Chromium Plating Bath Containing Sodium Benzenesulfonate Instead Of Sulfuric Acid, Edward Burleigh

Bachelors’ Theses

At the present day chromium plated articles are saving the country many tons of badly needed metals. The beautiful, bright,luster that chromium has is no longer the prime quality that makes its use so extensive. Today its extreme hardness has taken the foremost place. Parts worn by use and re-claimed with chromium, not only wear longer than the original ones· but they also save valuable metal and time put into new ones. New articles plated with chromium have increased life, and thus the time and metal needed for replacement is greatly reduced.

The present chromium plating baths containing sulfuric acid …


An Experimental Investigation Of The Age Hardening Of Nickel With Boron, Willard M. Boam May 1942

An Experimental Investigation Of The Age Hardening Of Nickel With Boron, Willard M. Boam

Bachelors Theses and Reports, 1928 - 1970

Since 1911, at which time, the age hardening phenomenon of duralumin was discovered by Film, much re­search has been carried on investigating the various alloy systems. The successful application of age hardening to the copper aluminum system (duralumin) has indicated the possibility of hardening practically all the metals in the same way.


Some Leaching Characteristics Of The Butte Rhodochrosite, W. L. Slosson May 1942

Some Leaching Characteristics Of The Butte Rhodochrosite, W. L. Slosson

Bachelors Theses and Reports, 1928 - 1970

With the increasing importance of manganese in the metallurgical fields of today and tomorrow, ex­tensive work along the lines of its successful ex­ploitation has been accomplished by many investiga­tors. Since tie current world situation has shut off most of our supply of high-grade manganese ores from foreign sources, the low-grade domestic deposits have entered the fields of investigation very rapidly.


The Effects Of Some Percentages Of Nickel On The Annealing Of Cartridge Brass, A. Edward Zezula May 1942

The Effects Of Some Percentages Of Nickel On The Annealing Of Cartridge Brass, A. Edward Zezula

Bachelors Theses and Reports, 1928 - 1970

The most important element in the alloying of steels, has also been used quite extensively as a third constituent in copper-zinc alloys. The chief characteristics of nickel which make it desirable as an alloying element are its toughness, high strength, and resistance to corrosion.


Stratigraphic Studies Of The Ordovician And Devonian Formations Throughout The Northwest Plains Area, Walter N. Campbell May 1942

Stratigraphic Studies Of The Ordovician And Devonian Formations Throughout The Northwest Plains Area, Walter N. Campbell

Bachelors Theses and Reports, 1928 - 1970

As yet the knowledge of Ordovician and Devonian physiography in this vast northwest region remains almost a complete secret. Very little, in any, work has been done along this line with the exception of those areas where the various formations outcrop.


Electrical Resistivity Measurements Of Powder Metal Compacts, John M. Fitzpatrick May 1942

Electrical Resistivity Measurements Of Powder Metal Compacts, John M. Fitzpatrick

Bachelors Theses and Reports, 1928 - 1970

This work, as it was originally planned, was the arranging of an apparatus whereby electrical resistivity measurements could be made on powder compacts. It was also to include measurements on a series of copper-nickel compacts both before and after sintering.


Geology Of Iron Deposits At Princeton Montana And Economic Aspects Of Iron Ore In Montana, Carl Lind May 1942

Geology Of Iron Deposits At Princeton Montana And Economic Aspects Of Iron Ore In Montana, Carl Lind

Bachelors Theses and Reports, 1928 - 1970

The purpose of this paper is to introduce to the reader, an iron deposit in the Princeton district, about 19 miles northeast by highway from Philipsburg, Montana. Heretofore there has been no written literature on this deposit. It is also intended to investigate the economic possibilities of iron ore in general in the State of Montana.


Porosity And Oil Absorption Properties Of Metal Compacts Of Copper - Tin - Graphite, Benjamin F. Mills May 1942

Porosity And Oil Absorption Properties Of Metal Compacts Of Copper - Tin - Graphite, Benjamin F. Mills

Bachelors Theses and Reports, 1928 - 1970

Powder metallurgy, the most recent innovation in met­allurgical process, is not a new art; although not until recently did it become a matter of general interest, this being due not only to the products formed but also to the possibilities of future developments. The manufacture and application of metal powders is now beginning to take a position as a recognized part of the science of metallurgy.


An Investigation Of The Age-Hardening Of Copper With Nickel-Boron Compounds, Robert I. Moreen May 1942

An Investigation Of The Age-Hardening Of Copper With Nickel-Boron Compounds, Robert I. Moreen

Bachelors Theses and Reports, 1928 - 1970

Boron is an element whose metallurgical possibil­ities have never been fully investigated. The principal reason for this fact seems to lie in the difficulties encountered in preparing elemental boron and its various intermetallic compounds.


A Study Of The Dissolution Of Pyrolusite In Sulphuric Acid, John J. Worsdell May 1942

A Study Of The Dissolution Of Pyrolusite In Sulphuric Acid, John J. Worsdell

Bachelors Theses and Reports, 1928 - 1970

With an eye to the future development of its re­sources, the large deposits of low-grade manganese ore within Montana's boundaries show great promise of developing an important industry. With the pre­sent war demands and the possibility of a future mar­ket it is essential that work expended to utilize this important mineral.


An Investigation Into The Recovery Of Indium From Fume Residue, Emery J. Turner May 1942

An Investigation Into The Recovery Of Indium From Fume Residue, Emery J. Turner

Bachelors Theses and Reports, 1928 - 1970

Several months were required to produce a single gram of indium. Consequently, the industrial history of the metal is extremely short. In view of the unique properties that indium has demonstrated in this short period, it is probable that indium is still in its early stage of development. However, the commer­cial applications of the metal are well established and indium is now produced on a commercial scale. It is obtainable as the metal or in solution for electroplat­ing.


Phosphate Deposits In Western Summit, Wasatch, Salt Lake, Morgan, And Weber Counties, Utah, Alvin M. Hanson May 1942

Phosphate Deposits In Western Summit, Wasatch, Salt Lake, Morgan, And Weber Counties, Utah, Alvin M. Hanson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Phosphate deposits in the western United States have been the subject of considerable discussion in the last decade, and during the last few years much interest has been aroused in them. Phosphate was first discovered in this area in 1889, but it was not until 1906 that the United States Government took active interest in the study of these deposits. The investigation by the government of the occurrence of western phosphate was begun by Weeks and Ferrier (10), and later carried on by others. On December 9, 1908 the western phosphate reserve was created and many acres of land were …


Mineral Occurences In Certain Pegmatite Dikes In Southwestern Montana, Jacob N. Jovick May 1942

Mineral Occurences In Certain Pegmatite Dikes In Southwestern Montana, Jacob N. Jovick

Bachelors Theses and Reports, 1928 - 1970

Pegmatite dikes are rather common in occurrence in parts of southwestern Montana, particularly in a region to the east of the Tobacco Root range 50 to 75 miles southeast of Butte.


The Anodic Oxidation Of Vanadium In Phosphoric Acid Solution, Ben H. Alexander May 1942

The Anodic Oxidation Of Vanadium In Phosphoric Acid Solution, Ben H. Alexander

Bachelors Theses and Reports, 1928 - 1970

The purpose of this thesis was to analyze the possibility of recovering the vanadium in the phosphoric acid by anodic oxidation in an electrolytic cell. This problem allowed not only the possibility of improving a commercial operation, but a study of the functioning of an interesting and very important phenomena.


The Recovery Of Zinc From Butte Mine Waters, Edmond M. Fern May 1942

The Recovery Of Zinc From Butte Mine Waters, Edmond M. Fern

Bachelors Theses and Reports, 1928 - 1970

Very little work has been done towards the recovery of zinc from mine water because the zinc content of the water is generally low. As different from copper, which can very easily be replaced by iron in any of its solutions, zinc is very high up in the electro-chemical series and so the few metals above zinc, most of which are rare and hence expensive, cannot be used to replace zinc from its solution.


Sizing By Elutriation Of Finely Ground Quartz And Pyrite, Elmer C. Polson May 1942

Sizing By Elutriation Of Finely Ground Quartz And Pyrite, Elmer C. Polson

Bachelors Theses and Reports, 1928 - 1970

Elutriation, as a means of sorting mineral particles, has received marked attention during the last fifteen years. Its use in the ceramics industry for the sorting of clays was recognized even before this.


Mineralogy And Genesis Of The Vermiculite Deposits At Libby, Montana, Raymond Kujawa May 1942

Mineralogy And Genesis Of The Vermiculite Deposits At Libby, Montana, Raymond Kujawa

Bachelors Theses and Reports, 1928 - 1970

The problem considered in this report is one of the mineralogy and mode of formation of the extremely pure, large bodies of vermiculite. Mineralogically the ultrabasic intrusive, with which the economic mineral is associated, presents an array of rather unusual minerals. The determination of these minerals, their associations, and the sequence of alteration that lead to the formation of the vermiculite bodies, constitutes the problem.


Induction Furnace Smelting Of Montana Chromite, Millard L. Reyner May 1942

Induction Furnace Smelting Of Montana Chromite, Millard L. Reyner

Bachelors Theses and Reports, 1928 - 1970

In 1939 the total world production of crude chromite was approximately 1,167,000 metric tons; of which the United States produced only 3,672 metric tons and imported over 317,500 metric tons. Imports came mostly from the Philippine Islands, Cuba, South Africa, and Rhodesia.


The Cleaning Action Of Detergents And Soaps On Printer's Ink And Lubricating Oils, Daniel David Holzman May 1942

The Cleaning Action Of Detergents And Soaps On Printer's Ink And Lubricating Oils, Daniel David Holzman

Bachelors’ Theses

During the past few years, industry has developed a steadily increasing interest in certain new types of synthetic organic compounds.

Industry devoted to the cleaning of textiles has found the removal of printer's ink and lubricating oils a tedious operation.

There has been developed and perfected a series of synthetic materials which successfully meet modern needs.

The detergents, in general, have some or all of the following properties: wetting-out, dispersing, emulsifying, penetrating, and cleaning.

There seems to be a need to investigate some of these new detergents for commercial cleaning purposes.