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Articles 291991 - 292020 of 294560

Full-Text Articles in Physical Sciences and Mathematics

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 …

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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.

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Chromite Deposits Near Red Lodge And Silver Star, Montana, Edmond F. Smigel Apr 1942

Chromite Deposits Near Red Lodge And Silver Star, Montana, Edmond F. Smigel

Bachelors Theses and Reports, 1928 - 1970

The Red Lodge and Silver Star chromite deposits of Montana have stimulated much interest during periods of war. The Red Lodge deposit is 25 miles southwest of Red Lodge which is also the nearest railroad point. Several workings are scattered throughout the area, exposing lense-like ore bodies averaging 33% chrome oxide. Silver Star is a much smaller deposit 5 miles west of Silver Star, Montana, which is its nearest rail­road point. Lenses of chromite are exposed by pits and trench­es, which average approximately 36% chromic oxide.

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The Beneficiation Of Montana Silver Star Chromite Ore, Edwin J. Bride Apr 1942

The Beneficiation Of Montana Silver Star Chromite Ore, Edwin J. Bride

Bachelors Theses and Reports, 1928 - 1970

It is known that there are large deposits of chromium ore in Stillwater and Carbon Counties in South-Central Montana. The late James F. Kemp of Columbia University, stated in 1928, that these were the largest chromium deposits in the United States and probably in the world, although they were not considered of commercial grade as compared with foreign ores.

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Fifty-Sixth Annual Meeting Of The Iowa Academy Of Science And The Eleventh Annual Convention Of The Junior Academy Of Science Of Iowa, April 17 And 18, 1942, Iowa Academy Of Science Apr 1942

Fifty-Sixth Annual Meeting Of The Iowa Academy Of Science And The Eleventh Annual Convention Of The Junior Academy Of Science Of Iowa, April 17 And 18, 1942, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

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Front Matter Apr 1942

Front Matter

Journal of the Minnesota Academy of Science

No abstract provided.

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Ceramic Experiments At The State Teachers College, Mankato, Minnesota, G. John Fischer, John L. Lang Apr 1942

Ceramic Experiments At The State Teachers College, Mankato, Minnesota, G. John Fischer, John L. Lang

Journal of the Minnesota Academy of Science

No abstract provided.

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Abstract Papers Apr 1942

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.

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An Investigation Of The Ores Of The Big Seven Mine, Neihart, Montana, Francis L. Wilson Apr 1942

An Investigation Of The Ores Of The Big Seven Mine, Neihart, Montana, Francis L. Wilson

Bachelors Theses and Reports, 1928 - 1970

During the course of this investigation of the ores of the Big Seven mine, Neihart, Montana, the writer has attempted, through a mi­croscopic study of polished sections, to ascertain the hypogene or supergene character of the ore minerals present in the ore suite.

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Abstract Papers Apr 1942

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.

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The Present Status Of The Soil Survey In Minnesota, P. R. Mcmiller Apr 1942

The Present Status Of The Soil Survey In Minnesota, P. R. Mcmiller

Journal of the Minnesota Academy of Science

No abstract provided.

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Back Matter Apr 1942

Back Matter

Journal of the Minnesota Academy of Science

No abstract provided.

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Range Sheep Industry In Kittitas County, Washington, Reginald M. Shaw Apr 1942

Range Sheep Industry In Kittitas County, Washington, Reginald M. Shaw

Geography Faculty Scholarship

This article summarizes the sheep industry in Kittitas County, Washington State as a microcosm of the entire Pacific Northwest sheep industry.

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A Review Of The Daimonelix Problem, C. Bertrand Schultz Mar 1942

A Review Of The Daimonelix Problem, C. Bertrand Schultz

University Studies (University of Nebraska) (1888–1984)

THE first paleontological expedition of the University of Nebraska State Museum was organized in the summer of 1891 and was led by Erwin H. Barbour, now Director Emeritus of the Museum. The most important and interesting discoveries made during the season were some very peculiar spiral fossils called by the field party "Devil's Corkscrews," or Daimonelix,l which were found in the Miocene deposits near Harrison in Sioux County, Nebraska. During the fifty years that have intervened scientists have tried to determine the origin of these strange forms. Several controversies arose, and although various theories have been proposed, none as yet …

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The Effect Of Elevated Temperatures On Zinc Plated Copper, Jerome E. Sommerfield Feb 1942

The Effect Of Elevated Temperatures On Zinc Plated Copper, Jerome E. Sommerfield

Bachelors’ Theses

While attending school the author was employed by the Harnischfeger Corporation and the subject of the thesis was chosen along a line in which the writer was familiar.

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Geologic Field Mapping In An Area Eight Miles North Of Three Forks, Montana, H. E. Lillis Jan 1942

Geologic Field Mapping In An Area Eight Miles North Of Three Forks, Montana, H. E. Lillis

Bachelors Theses and Reports, 1928 - 1970

The Three Forks are includes parts of Jefferson, Madison, Broadwater Pond Gallatin counties, Montana. Sedimentary formations lie at the surface nearly everywhere in the area, and the rugged surface topography has been developed through the folding and tilting of these formations and their dif­ferential erosion.

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Yield Of Even-Aged Stands Of Loblolly Pine In Northern Louisiana, Walter H. Meyer Jan 1942

Yield Of Even-Aged Stands Of Loblolly Pine In Northern Louisiana, Walter H. Meyer

Yale School of the Environment Bulletin Series

No abstract provided.

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The Basic Analogue Of Kummer’S Theorem, J. A. Daum Jan 1942

The Basic Analogue Of Kummer’S Theorem, J. A. Daum

Department of Mathematics: Faculty Publications

About one hundred years ago, E. E. Kummer proved the formula
(1) 2F1 [1 + a – b a, b; -1] = [Γ(1 + a - b)Γ(1 + a/2) ÷ Γ(1+a)Γ(1+a/2 - b)
which has since been known as Kummer's theorem. This appears to be the simplest relation involving a hypergeometric function with argument ( - 1).
All the relations in the theory of hypergeometric series rF8 which have analogues in the theory of basic serie3 are those in which the argument is ( + 1 ) …

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A Study Of The Electrolytic Reduction Of Pyrrole, Don Richard Strehlau Jan 1942

A Study Of The Electrolytic Reduction Of Pyrrole, Don Richard Strehlau

Masters Theses

"A review of the chemical literature has shown that electro-organic methods compare favorably with purely chemical methods for certain syntheses belonging to the following general classes of reactions: coupling, oxidation, reactions with halogens, and reductions. Electro-organic methods have been used most successfully in synthesis by reduction. The chief advantage is using electrolytic reduction in preference to a chemical one is that it offers a more exact control of conditions, and consequently should give a higher yield and a purer product. The advantages of the means of reduction suggested an investigation of its use in the synthesis of hydrogenated products of …

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Dielectric And Solvent Effects Upon The Regeneration In Acid Solution Of Alkali-Faded Bromo Phenol Blue., Joseph Bailey Price Jan 1942

Dielectric And Solvent Effects Upon The Regeneration In Acid Solution Of Alkali-Faded Bromo Phenol Blue., Joseph Bailey Price

LSU Historical Dissertations and Theses

No abstract provided.

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The Geology Of The Claiborne (Eocene) Group Of Mississippi As Far North As Grenada County., Emil Paul Thomas Jan 1942

The Geology Of The Claiborne (Eocene) Group Of Mississippi As Far North As Grenada County., Emil Paul Thomas

LSU Historical Dissertations and Theses

No abstract provided.

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Geology Of Desoto And Red River Parishes, Louisiana., Grover E. Murray Jan 1942

Geology Of Desoto And Red River Parishes, Louisiana., Grover E. Murray

LSU Historical Dissertations and Theses

No abstract provided.

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Thickness And Structural Study Of Major Divisions Of Cretaceous System In Nebraska, Paul Fuenning Jan 1942

Thickness And Structural Study Of Major Divisions Of Cretaceous System In Nebraska, Paul Fuenning

Department of Earth and Atmospheric Sciences: Faculty Publications

The purpose of this paper is to present isopach maps of certain stratigraphic divisions of the Cretaceous system and structure-contour maps of certain horizons of that system in Nebraska. Tables of factual data also are included. The maps indicate clearly that certain structural "highs" such as the Chadron-Cambridge axis and the Sioux Falls "high," in conjunction with a large well defined basin across central Nebraska and another deep basin west of the Chadron-Cambridge axis, dominated the structural and depositional history of Nebraska during the Cretaceous period.

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Decay Of Western Hemlock In Western Oregon And Washington, G. H. Englerth Jan 1942

Decay Of Western Hemlock In Western Oregon And Washington, G. H. Englerth

Yale School of the Environment Bulletin Series

No abstract provided.

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Growing Of White Pine On The Yale Forest Near Keene, New Hampshire, Ralph C. Hawley, Robert T. Clapp Jan 1942

Growing Of White Pine On The Yale Forest Near Keene, New Hampshire, Ralph C. Hawley, Robert T. Clapp

Yale School of the Environment Bulletin Series

No abstract provided.

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Management Of Loblolly Pine In The Pine-Hardwood Region In Arkansas And In Louisiana West Of The Mississippi River, Herman H. Chapman Jan 1942

Management Of Loblolly Pine In The Pine-Hardwood Region In Arkansas And In Louisiana West Of The Mississippi River, Herman H. Chapman

Yale School of the Environment Bulletin Series

No abstract provided.

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An Experimental Investigation Of Certain Phases Of The Reaction Of Meta Dinitrobenzene And Carbonyl Compounds, William Elson Jan 1942

An Experimental Investigation Of Certain Phases Of The Reaction Of Meta Dinitrobenzene And Carbonyl Compounds, William Elson

Master's Theses

No abstract provided.

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A Study Of The Preparation Of Phenyl Sodium, William W. Jenkins Jan 1942

A Study Of The Preparation Of Phenyl Sodium, William W. Jenkins

Master's Theses

No abstract provided.

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Titration Curves Of Indicators, Marvin F. L. Johnson Jan 1942

Titration Curves Of Indicators, Marvin F. L. Johnson

Master's Theses

No abstract provided.

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The Monadnock Volume 16, Number 1, December 1941, Clark University Geographical Society Dec 1941

The Monadnock Volume 16, Number 1, December 1941, Clark University Geographical Society

The Monadnock (Clark Geographical Society)

Volume 16, Issue 1 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).

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