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Articles 69181 - 69210 of 69937

Full-Text Articles in Physical Sciences and Mathematics

An Isopach Map And Discussion Of The Marine Jurassic Of Western United Sates And Canada, John H. Ferry Feb 1944

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.


Torsional Deflection Of Miter-Type Lock Gates And Design Of The Diagonals, Edwin Gustav Hoffmann Feb 1944

Torsional Deflection Of Miter-Type Lock Gates And Design Of The Diagonals, Edwin Gustav Hoffmann

Retrospective Theses and Dissertations

No abstract provided.


Electroplating Of Chromium Upon A Nickel Plated Magnesium Alloy, Harmel Dawson Jan 1944

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.


A Spectrophotometric Study Of The Solution Of Iodine In Aqueous Potassium Iodide, Joseph L. Schneider Jan 1944

A Spectrophotometric Study Of The Solution Of Iodine In Aqueous Potassium Iodide, Joseph L. Schneider

Master's Theses

No abstract provided.


The Decomposition Of Isopropyl Chlorocarbonate., Edgar Lattimore Compere Jan 1944

The Decomposition Of Isopropyl Chlorocarbonate., Edgar Lattimore Compere

LSU Historical Dissertations and Theses

No abstract provided.


A Study Of Deep-Seated Domes Of South Louisiana., William Edwin Wallace Jan 1944

A Study Of Deep-Seated Domes Of South Louisiana., William Edwin Wallace

LSU Historical Dissertations and Theses

No abstract provided.


Geology Of Webster Parish., James Littell Martin Jan 1944

Geology Of Webster Parish., James Littell Martin

LSU Historical Dissertations and Theses

No abstract provided.


The Determination Of Small Amounts Of Carbon Monoxide In Air, Edward J. Fitzsimons Jan 1944

The Determination Of Small Amounts Of Carbon Monoxide In Air, Edward J. Fitzsimons

Master's Theses

No abstract provided.


Spectrophotometric Determinations Of The Sulfonamides, Paul William Brna Jan 1944

Spectrophotometric Determinations Of The Sulfonamides, Paul William Brna

Master's Theses

No abstract provided.


An Improved Method For The Determination Of Vitamin B₁ And Vitamin B₂ By Spectrophotometric Means., Kenneth W. Smith Jan 1944

An Improved Method For The Determination Of Vitamin B₁ And Vitamin B₂ By Spectrophotometric Means., Kenneth W. Smith

Electronic Theses and Dissertations

No abstract provided.


Effect Of Temperature On Sludge Digestion And Gas Production At The Racine Sewage Disposal Plant, Mitzi S. Heim Oct 1943

Effect Of Temperature On Sludge Digestion And Gas Production At The Racine Sewage Disposal Plant, Mitzi S. Heim

Bachelors’ Theses

Sewage is defined as the "spent water supply of a com­munity, together with those human and household wastes which are removed by water carriage supplemented in some instances by street washings and industrial wastes."


A Study Of Chrome Dyeing By Determination Of Chromium On Dyed Wool And In Exhausted Dye Baths, Thomas Schonfeld Aug 1943

A Study Of Chrome Dyeing By Determination Of Chromium On Dyed Wool And In Exhausted Dye Baths, Thomas Schonfeld

Chemistry Honors Papers

This 13 page thesis attempts to analyze the reaction between the wool and the chromate in the dye bath.


A Study Of The Fischer-Tropsch Synthesis, John E. Dornfeld Aug 1943

A Study Of The Fischer-Tropsch Synthesis, John E. Dornfeld

Bachelors’ Theses

In Continental Europe, where raw materials are at a premium, it is necessary to synthesize as much as possible. Hydrocarbons and their oxygenated derivatives are important for "everyday" life. When importation costs of raw materials are high, synthesis is necessary provided it can be done cheaper. The Fischer-Tropsch process is the answer for the needs of synthetic hydrocarbons and their oxygenated derivatives.

The purpose of this thesis is to obtain hydrocarbons and their oxygenated derivatives by the Fischer-Tropsch process in the wax range. From the literature it appears that no work in the industrial field is being done in the …


Flotation Of A Complex Sulphide Ore Containing Tetrahedrite, James C. O'Dea, Lorimer W. Hoar Jun 1943

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 May 1943

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 May 1943

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.


The Effect Of Boron On The Hardenability Of Steel, William J. Foy May 1943

The Effect Of Boron On The Hardenability Of Steel, William J. Foy

Bachelors Theses and Reports, 1928 - 1970

Many attempts have been made to improve iron and steel and their alloys by the addition of boron. The re­sults obtained were not encouraging for the reason that the amount of boron used, generally from 0.2 to 2.0 per cent is altogether too high. This percentage of boron ren­ders the product hard and brittle and of late the experiments with boron in this connection have been practically abandoned.


An Attempt To Increase The Permeability And Porosity Of The Cut Bank Oil Sand By Treatment With Various Reagents, Donald H. Johnson May 1943

An Attempt To Increase The Permeability And Porosity Of The Cut Bank Oil Sand By Treatment With Various Reagents, Donald H. Johnson

Bachelors Theses and Reports, 1928 - 1970

The purpose of this investigation was to attempt to find some means of increasing the effective porosity and permeabil­ity of the producing sands of the Cut Bank Oil Field, with the hope that thereby the ultimate recovery of petroleum from this field may be increased. Although the percentage increase in production thus effected would undoubtedly be small, it would represent a substantial volume of petroleum in view of the great quantity of oil and gas present in this field.


Geology And Occurence Of Graphite At The Crystal Graphite Mine Near Dillon, Montana, Charles K.W. Hum Hum May 1943

Geology And Occurence Of Graphite At The Crystal Graphite Mine Near Dillon, Montana, Charles K.W. Hum Hum

Bachelors Theses and Reports, 1928 - 1970

The problem to be considered embraces the mineralogy and the mode of formation of a very pure and vein-like deposit of crystalline graphite. This deposit is of more than ordinary interest because in its geological relations and in the character of its graphite it shows many similarities to the famous deposits of Ceylon.


Electrolytic Deposition Of Iron, Irving M. Kenoffel May 1943

Electrolytic Deposition Of Iron, Irving M. Kenoffel

Bachelors Theses and Reports, 1928 - 1970

In this thesis the purpose was to obtain a good iron deposit from a relatively simple bath. The deposit was to be of good nature and low in Carbon content. Also included is a summary of the uses to which electrolytic iron can be put as well as a summary of work done by other researchers in depositing iron electrolytically.


Electrolytic Manganese From Aqueous Sodium Manganate Solution, William F. Sullaway May 1943

Electrolytic Manganese From Aqueous Sodium Manganate Solution, William F. Sullaway

Bachelors Theses and Reports, 1928 - 1970

The contents of this paper represent attempts to deposit the metal, manganese from sodium manganate solutions. The source of manganese was limited to the nodulized product from roasting rhodochrosite and was therefore chiefly manganese oxide.


A Cytolocical Study Of The 4th Chromosome Of Eyeless Drosophila, Joyce Ruth Soelch May 1943

A Cytolocical Study Of The 4th Chromosome Of Eyeless Drosophila, Joyce Ruth Soelch

Bachelors’ Theses

In Drosophila Melanogaster the recessive gene for eyeless and its normal allelomorph, which cause in general a redaction of the size of the eye in the adult fly, are situated in the small 4th chromosome. The purpose of this experiment was to make a Cyto- logical study and comparison of the 4th chromosomes of the eyeless Drosophila and the normal plus or wild type to determine whether this recessive gene, located on the 4th chromosome, results in a difference in the number, size, formation, or location of bands.


A Suggested Method For The Measurement Of Unsaturation In Organic Compounds By Means Of A Hydrogen Number, Richard Roberts May 1943

A Suggested Method For The Measurement Of Unsaturation In Organic Compounds By Means Of A Hydrogen Number, Richard Roberts

Bachelors’ Theses

The measurement of unsaturation in organic compounds are commonly expressed in terms of an iodine number, but as this value is not trustworthy in a number of cases, it has been suggested by earlier worker that an indication of unsaturation could be obtained by the quantitative hydrogenation of a compound and expressing the result in terms of a hydrogen number. Although such determinations have been previously made, usually at elevated temperatures and pressures, it is the purpose of this work to carry out the hydrogenation at room temperature and atmospheric pressure. For purposes of comparison, determinations will be made at …


A Viscometric Determination Of The Diastatic Effect Of Amylase On Starches, Dawn Marie Ehlert May 1943

A Viscometric Determination Of The Diastatic Effect Of Amylase On Starches, Dawn Marie Ehlert

Bachelors’ Theses

Internal friction causes some liquids to flow with less freedom than true solutions of the same density. or with less freedom than water. This is attributed in part to larger particle size and prompts one to propose that when using solutions in which the dissolved substance has not been dispersed and subdivided to single molecular particles that the dissolved particles may be present as com­binations. These combinations may increase to enlarged dimensions with changes in temperature, density. electric charges. etc. Similar conditions are characteristic o starch solutions. The solutions are colloidal and vary in particle size. In some situations the …


Gas - Volumetric Semimicrodetermination Of Carbon: A Wet Method For Aliphatic And Cyclic Compounds, Roger P. Staiger May 1943

Gas - Volumetric Semimicrodetermination Of Carbon: A Wet Method For Aliphatic And Cyclic Compounds, Roger P. Staiger

Chemistry Honors Papers

This 18 page thesis explains the technique and apparatus of gas-volumetric semimicrodetermination of carbon and shows the accuracy of this method.


The Dry Lake Section Of The Brazer Foundation, James S. Yolton May 1943

The Dry Lake Section Of The Brazer Foundation, James S. Yolton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Dry Lake section of the Brazer formation, totalling 3100 feet in thickness, is an excellent exposure containing an abundance of fossils many of which are well preserved. The fauna indicates that the formation is to be correlated with the Upper Iowan and Chester series of the type Mississippian system in the Mississippi Valley section. Substantial fossil evidence indicates the following correlation for the Brazer formation members. The C unit represents the western equivalent of the Middle Meramec group, i.e., the Salem and St. Louis limestones. The D member is decidedly Ste. Genevieve in general faunal aspects but, because of …


Spectrographic Analysis Of Montana Limestones, Clifford A. Barkell Apr 1943

Spectrographic Analysis Of Montana Limestones, Clifford A. Barkell

Bachelors Theses and Reports, 1928 - 1970

Spectrographic analysis of limestones as a possible method of correlation of geologic formations is an altogether new line of investigation. As far as known the only previous work consists of a few analyses made by Fred Lines in his bachelor thesis work at Montana School of mines in the spring of 1942.


Concentration By Flotation Of A Complex Galena - Sphalerite - Chalcopyrite Ore From The Nine Mile District Near Missoula, Montana, Truxton J. Fisher, John L. Tokich Apr 1943

Concentration By Flotation Of A Complex Galena - Sphalerite - Chalcopyrite Ore From The Nine Mile District Near Missoula, Montana, Truxton J. Fisher, John L. Tokich

Bachelors Theses and Reports, 1928 - 1970

At the present time ore bodies being mined are becoming more and more complex in mineral association, thus presenting a more difficult problem in their concentration. Lead-zinc sulphide ores are among the more common ores which present such difficulties.


A Study Of Certain Substitution Groups, Merle Mitchell Apr 1943

A Study Of Certain Substitution Groups, Merle Mitchell

Mathematics & Statistics ETDs

This thesis purposes to study a certain group of movements which can be expressed as substitutions. The groups of movements which send a square into itself is to be studied as a group of eight substitutions on the vertices for the purpose of leading up to the real problem of this paper. From the octic group, it is natural to proceed to a study of the movements which send a cube into itself. In particular, it is the aim of this thesis to discover the group of the cube and to analyze some of its properties. There are twenty-eight rotations …


Permeability And Porosity Studies Of The Cut Bank Oil Sand, Wesley Edward Davis Apr 1943

Permeability And Porosity Studies Of The Cut Bank Oil Sand, Wesley Edward Davis

Bachelors Theses and Reports, 1928 - 1970

In studying the Cut Bank field and its numerous wells, it is found that dry holes are surrounded by producing wells, and also that the field as a whole is very irregular; water, oil, and gas zones in many cases following no definite pattern. In some instances, this phenomenon may be due to the lensing and thinning of the producing sands, but it is evident that this is not the only factor. There­fore, the controlling factors must be porosity and permeability.