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Articles 68401 - 68430 of 69082
Full-Text Articles in Physical Sciences and Mathematics
Electrolytic Deposition Of Iron, Irving M. Kenoffel
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.
Gas - Volumetric Semimicrodetermination Of Carbon: A Wet Method For Aliphatic And Cyclic Compounds, Roger P. Staiger
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.
A Viscometric Determination Of The Diastatic Effect Of Amylase On Starches, Dawn Marie Ehlert
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 …
The Dry Lake Section Of The Brazer Foundation, James S. Yolton
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 …
A Study Of Certain Substitution Groups, Merle Mitchell
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 …
Spectrographic Analysis Of Montana Limestones, Clifford A. Barkell
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
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.
Permeability And Porosity Studies Of The Cut Bank Oil Sand, Wesley Edward Davis
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.
Zinc Plating Magnesium, Howard Wilbur Adam
Zinc Plating Magnesium, Howard Wilbur Adam
Bachelors Theses and Reports, 1928 - 1970
Magnesium and magnesium alloys are becoming more and more important in modern industry. Their use in the aviation industry has been greatly curtailed because of their comparatively poor resistance to corrosion especially in moist atmospheres. Many methods have been adopted to improve their resistance to corrosion.
The Electrodeposition Of Iron-Manganese Alloys, Earl C. Roberts
The Electrodeposition Of Iron-Manganese Alloys, Earl C. Roberts
Bachelors Theses and Reports, 1928 - 1970
Various electrolytes were experimented with in an attempt to deposit an iron-manganese alloy. An Alloy was obtained from a solution containing ferrous ammonium sulfate, manganous sulfate, and ammonium sulfate. Further experimentation was done in an effort to determine the optimum conditions of deposition and the highest manganese alloy which could be produced.
Coal In Montana, Clifford A. Barkell
Coal In Montana, Clifford A. Barkell
Bachelors Theses and Reports, 1928 - 1970
Coal was first mined in Montana in the year 1880. For the last thirty years the mining of coal in this state has been very important-with few people realizing its value. In the mineral industry, the value of the annual production of coal is exceeded by none of the non-metallics, and only by gold, silver, and copper in the metallics. At the present time the coal production of Montana is valued at about 41000,000.00 annually.
On The Production Of Polyploidy With Paradichlorbenzene, Mary Anne Carey
On The Production Of Polyploidy With Paradichlorbenzene, Mary Anne Carey
Bachelors’ Theses
The subject of polyploidy has been of scientific interest for some time. The true nature of the cause of this phenomenon has been disputed ever since its existence was made known. Polyploidy is the condition in which the haploid number of the chromosomes, contained within the nucleus, is multiplied so that there is a higher number of chromosomes present than there is in the typical diploid cell of that particular plant or animal. The diploid number of the chromois known as 2n, therefore, higher multiples would be referred to as 3n, 4n, 8n etc. Some plants or animals have one …
Direct Spectrophotometric Determination Of Lead Naphthenate In Linseed Oil, Nicholas Peter Oehlberg
Direct Spectrophotometric Determination Of Lead Naphthenate In Linseed Oil, Nicholas Peter Oehlberg
Master's Theses
No abstract provided.
The Reaction Of Beta-Hydroxy Ketones With Phenyl Magnesium-Bromide Keteneimines., Mack Castleman Fuqua
The Reaction Of Beta-Hydroxy Ketones With Phenyl Magnesium-Bromide Keteneimines., Mack Castleman Fuqua
LSU Historical Dissertations and Theses
No abstract provided.
Polyhydroxyamines, John Wotiz
Polyhydroxyamines, John Wotiz
Master's Theses
"The industrial growth of aliphatic chemistry, which has constituted one of the outstanding advances of recent years, has been almost entirely in the field of hydrocarbons and their simpler chlorine and oxygen derivatives… Representative of the aliphatic amines, possibly only the methyl, amyl and ethanol amines may be said to have been commercially available. And yet the field of aliphatic nitrogen chemistry possesses the greatest variety of known aliphatic compounds; there are at least several nitrogen analogs of each oxygen compound, often more stable, more definitely characterized, and more reactive chemically." Relatively few aminoalcohols, especially polyhydroxyaminoalcohols have been prepared. Due …
The Kinetics And Mechanism Of The Alkaline Fading Of Iodo Phenol Blue - The Diacetone-Alcohol - Hydroxide Ion Reaction., Ralph Theodore Overman
The Kinetics And Mechanism Of The Alkaline Fading Of Iodo Phenol Blue - The Diacetone-Alcohol - Hydroxide Ion Reaction., Ralph Theodore Overman
LSU Historical Dissertations and Theses
No abstract provided.
Zeta Potentials., Joseph Ehrman Pryor
Zeta Potentials., Joseph Ehrman Pryor
LSU Historical Dissertations and Theses
No abstract provided.
The Physiography Of Beauregard And Allen Parishes., Wilbur Charles Holland
The Physiography Of Beauregard And Allen Parishes., Wilbur Charles Holland
LSU Historical Dissertations and Theses
No abstract provided.
The Potentiometric Determination Of Zinc In Dowmetal Alloys., James S. Goodman
The Potentiometric Determination Of Zinc In Dowmetal Alloys., James S. Goodman
Electronic Theses and Dissertations
No abstract provided.
Notes On The Biology And Commercial Fishery Of The Catfish Of The James River, Virginia, Winston Menzel
Notes On The Biology And Commercial Fishery Of The Catfish Of The James River, Virginia, Winston Menzel
Dissertations, Theses, and Masters Projects
No abstract provided.
Micro-Density Determinations Of Liquids, Rachel L. Horowitz
Micro-Density Determinations Of Liquids, Rachel L. Horowitz
Bachelors’ Theses
Recent developments in the field of microchemistry have aroused the necessity of accurate micro-methods for density determinations. Such methods have been developed by various investigators and some of them found their application in re search and industry, wherever the saving of material and time was an essential problem.
The purpose of this work is to compare all the methods of micro-density determinations found in literature, check their accuracy and simplicity and find their limitations and advantages.
The Geology Of The Blockhouse Quadrangle, Blount County, Tennessee, James Edward Ricketts
The Geology Of The Blockhouse Quadrangle, Blount County, Tennessee, James Edward Ricketts
Masters Theses
Preface: It is the purpose of this report to describe the major geologic and geographic conditions of the Blockhouse Quadrangle, Blount County, Tennessee, based upon field studies of the writer. This area, a relatively small portion of the Tennessee Section of the Valley and Ridge Provence, is typical of the East Tennessee Valley and the adjacent Blue Ridge Province. Since field study constituted a large part of the work, much of the written information was taken from field notes. Maps, charts, and photographs are interspersed throughout the text thus aiding in a better understanding of the subject at hand.
Since …
A Research In Sixth Grade Children's Solution Of Verbal Arithmetic Problems, Herbert Schroder
A Research In Sixth Grade Children's Solution Of Verbal Arithmetic Problems, Herbert Schroder
Master's Theses
The purpose of this research in sixth grade children's solution of verbal problems in arithmetic is to investigate the mental processes that lie back of pupils' answers in arithmetic. That is, how do pupils solve verbal problems in arithmetic? The investigation involves several related problems such as; to what extent is the pupils' method of solution influenced by irrelevant data, cues, details, and numbers used in a problem?
The Yellow Pigment In The Flower Petals Of Bird's Foot Trefoil (Lotus Corniculatus L.), David K. Blake Jr.
The Yellow Pigment In The Flower Petals Of Bird's Foot Trefoil (Lotus Corniculatus L.), David K. Blake Jr.
Honors Theses
Bird's foot trefoil is a low growing, bushy legume which is gaining popularity as a forage plant. Its small sweet-pea-like blossoms are bright yellow, bearing a few thing scarlet lines along the standard (the topmost petal). The buds are scarlet-tipped, the scarlet disappearing as the flower matures. For this investigation, the flowers were picked when mature, or nearly so, then were air-dried at 20-30 degrees celsius. The petals were not separated from the calyx.
An Investigation Of The Synthesis And Physical Properties Of Some Halogenated-Dinitromethanes, Charles O. Bostwick
An Investigation Of The Synthesis And Physical Properties Of Some Halogenated-Dinitromethanes, Charles O. Bostwick
Honors Theses
Work has been done on the synthesis and physical properties ot the dichlor- (1), dibrom- (2), and bromchlor- {3) dinitromethanes. However no reports could be found on the synthesis of nitromethanes containing fluorine. In this research, attempts were made to replace the bromine atoms in dibromdinitromethane with fluorine atoms by means or various fluorinating agents available. Some of the physical constants of the dibrom-, bromchlor-, and monobrom- dinitromethanes were determined in order to obtain fairly accurate values for comparison with the products from various reactions. The by-products from the synthesis of dibromd1n1tromethane were also studied.
Determination Of Heat Of Reaction In The Setting Process For Silicic Acid Gels, Mason Kronick
Determination Of Heat Of Reaction In The Setting Process For Silicic Acid Gels, Mason Kronick
Honors Theses
The underlying purpose of this work was to gain a further insight into the mechanism of the setting of silicic acid gels. The primary purpose was to determine the heat of reaction during the setting process for the gels. Previous investigators have sought to determine the structure of gels by investigating the effect of certain factors as: temperature, concentration of both acid and silica, pH, and addition of soluble organic and inorganic materials on the time of set. Certain properties of the silicic acid gels have bearing on the theories for the mechanism of the setting process. These properties are …
Elasticity And Plastic Flow Of Silicic Acid Gels, Clarence Kenneth Lasher
Elasticity And Plastic Flow Of Silicic Acid Gels, Clarence Kenneth Lasher
Honors Theses
Rubber is a very common example of a substance which has both elastic and plastic properties. If a rubber band is placed over two pegs, it is stretched and behaves elastically. There will be a certain tension in the rubber band but as time goes on, this tension lessens. The rubber has undergone a certain amount of plastic flow. It has been the purpose of this research to study the analogous situation in the case of silicic acid gels.
The Effect Of Electrolytes On The Viscosity And Time Of Set Of Silicic Acid Gels, John W. Rhoades
The Effect Of Electrolytes On The Viscosity And Time Of Set Of Silicic Acid Gels, John W. Rhoades
Honors Theses
This thesis contains the results of experiments of the effects of electrolysis of the viscosity and time of set of silicic acid gels.
Heats Of Solution Of Halogen Methanes In Liquid Ammonia, Robert W. Davison
Heats Of Solution Of Halogen Methanes In Liquid Ammonia, Robert W. Davison
Honors Theses
Introductory experiments were carried out to see just which halogen methane derivatives, if any, produce heat changes when dissolved in liquid ammonia. There are indications given in the chemical literature to expect that certain of the halogen methanes should dissolve in liquid ammonia with the evolution or absorption of heat. This present research work involved investigation of such compounds as chloroform, carbon tetrachloride, bromoform, and also iodoform. Only introductory heat measurements were made. More work must be done to confirm and enlarge upon results presented here.
Report Of Investigation On The Physical Characteristics Of The Oil Sands From The Cut Bank Field, Montana, V. E. Hanes
Report Of Investigation On The Physical Characteristics Of The Oil Sands From The Cut Bank Field, Montana, V. E. Hanes
Bachelors Theses and Reports, 1928 - 1970
The purpose of this research was to study the physical characteristics, mainly, porosity and permeability of the oil sands from the Cut Bank field, Glacier County, Montana. In so doing, a better understanding of the relationship of these physical characteristics to one another and to the pool itself could be obtained.