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Articles 289291 - 289320 of 292758
Full-Text Articles in Entire DC Network
The Fluorescence Of Uranium In Solid Solution, Robert Emmett Kelly
The Fluorescence Of Uranium In Solid Solution, Robert Emmett Kelly
Masters Theses
"The fluorescence of uranium finds its greatest application in the so-called "bead test" which is a method of qualitative analysis. In the form of a bead, the uranium is in solid solution, and if the proper chemical solvent is used, the bead will fluoresce under ultraviolet radiation.
In the systematic separation of the metallic elements, uranium is associated with the aluminum group in that it is not precipitated by hydrogen sulfide in 0.3 N H ion but is precipitated by ammonium hydroxide and ammonium sulfide. In the analytical scheme, uranium acts like beryllium. This process of detection is sometimes tedious …
Halogenated Epoxide-Phenol Reactions A Mechanism Study, Richard L. Rowton
Halogenated Epoxide-Phenol Reactions A Mechanism Study, Richard L. Rowton
Masters Theses
"The object of this investigation was to study the reactions of two other halogenated epoxides--namely, 3-bromo-1,2-epoxybutane and l-bromo-2,3-epoxybutane--with the phenolate ion, with the hope that the results obtained would shed additional light upon the mechanisms of such reactions. At the present time, no direct practical applications of the results can be forseen. However, the information gained will be a worthwhile addition to the vast existing store of knowledge already at our disposal, and might be of some help to future investigators"--Introduction, page 2.
A Study Of The Effect Of Jointing On The Blasting Of Granite, Graniteville, Missouri, Avery Ala Drake
A Study Of The Effect Of Jointing On The Blasting Of Granite, Graniteville, Missouri, Avery Ala Drake
Masters Theses
"Purpose of investigation: The purpose of this investigation is to attempt to determine the influence that joints exert upon the blasting of granite and if joints are induced by blasting. The problem grew out of an explosive evaluation project that was conducted by the Mining Department, Missouri School of Mines. In late May 1950, the project was moved into the granite area near Graniteville, Missouri. It became apparent upon study of this area that the jointing would have certain effects upon the results obtained. Dr. J. D. Forrester, Chairman, Department of Mining Engineering, Missouri School of Mines, Rolla, Missouri, suggested …
The Partition Function Of Silver, Ralph H. Lilienkamp
The Partition Function Of Silver, Ralph H. Lilienkamp
Masters Theses
"The study of the thermodynamic properties of solids at low temperatures has shown that most theories either break down or become too cumbersome.
A theory based upon a crystal lattice of atoms gives the best physical picture of a solid. Fisher has developed partition functions from this theory for the simple cubic, body-centered cubic, and the face-centered cubic lattices. In his paper Fisher gave three partition functions of increasing complexity and accuracy for each of the three lattices. In this paper the three partition functions for a face-centered cubic lattice shall be applied to silver and compared.
The Helmholtz free …
4-Benzoyl-4-Methyl-1, 2-Epoxypentane, An Attempted Synthesis, Robert L. Snell
4-Benzoyl-4-Methyl-1, 2-Epoxypentane, An Attempted Synthesis, Robert L. Snell
Masters Theses
"The object of this research was to prepare first the simplest homologue of the epoxy-ketone considered by Russell to have been his product. If this homologue, 4-benzoyl-4-methyl-1,2-epoxypentane, could be prepared and caused to form a cyclic derivative of the type given by 1,4-diketones with 2,4-dinitrophenylhydrazone, the organic chemist would be given a new approach to substituted 1,2-diazines as well as a previously unreported reaction of the epoxide grouping. If this reaction could be made to occur, other epoxides of this series would be prepared and treated in the same manner.
It was decided that the shortest route to 4-benzoyl-4-methyl-1,2-epoxypentane would …
A Necessary And Sufficient Condition That A Set Be Homeomorphic To A Plane Region Bounded By A Finite Number Of Nonintersecting Circles., Robert Lloyd Broussard
A Necessary And Sufficient Condition That A Set Be Homeomorphic To A Plane Region Bounded By A Finite Number Of Nonintersecting Circles., Robert Lloyd Broussard
LSU Historical Dissertations and Theses
No abstract provided.
Itaconic Acid Derivatives Of Sulfanilamide And Sulfone, Malcolm J. Thompson
Itaconic Acid Derivatives Of Sulfanilamide And Sulfone, Malcolm J. Thompson
Electronic Theses and Dissertations
This thesis, submitted to Xavier University in partial fulfillment of requirements for a Maters degree in chemistry in 1952, reports the synthesis and characterization of itaconic acid derivatives of sulfanilamide and amino phenyl sulfone compounds. The research describes reaction procedures and the isolation and purification of a series of novel chemical compounds, with experimental data including melting points, percent yields, elemental analysis, and molecular weights reported for numerous derivatives. The thesis presents conclusions regarding the chemical properties and reactivity of the synthesized compounds.
Note: No original abstract was included; this abstract is provided by the XULA Digital Commons editors.
Chalcones Derived From M-Nitroacetophenone, Richard Allan Hendry
Chalcones Derived From M-Nitroacetophenone, Richard Allan Hendry
University of the Pacific Theses and Dissertations
The object of this research was to prepare substituted derivatives of various chalcones having the nitro group substituted in the 31-position, the idea being to help complete the series of chalcones having the nitro group in that position. This was to be done by condensing various substituted benzaldehydes with m-nitroacetophenone, using dry hydrogen chloride as a condensing agent. The properties of the resulting chalcones were then to be determined by observing color reactions, spectra, and other general physical properties.
Urea Adducts Of The Esters Of Stearic Acid, Paul Elliott Greene
Urea Adducts Of The Esters Of Stearic Acid, Paul Elliott Greene
University of the Pacific Theses and Dissertations
Urea forms crystalline complexes with n-alkanes and their liner derivatives but not with most branched and cyclic hydrocarbons and their derivatives. The compounds are stable enough to be used in separating these types of aliphatic compounds from their branched and cyclic analogs. Linear esters derived from normal saturated acids give adducts as expected. Urea complexation was found to be of great importance in the purification and separation of unsaturated esters of high molecular weight.
The object of the present research was to investigate the compositions of urea adducts of various long-chain esters, approaching the class of waxes, to test various …
The Spieker Circle And Certain Related Configurations, Berthola Elmo Lumzy
The Spieker Circle And Certain Related Configurations, Berthola Elmo Lumzy
Electronic Theses and Dissertations
This thesis, presented to the Department of Mathematics at Xavier University in partial fulfillment of requirements for the degree of Master of Arts in 1952, examines the Spieker circle, a circle inscribed in the median triangle of a given triangle, and extends its defining properties to related geometric configurations. Lumzy first establishes a series of analogies between the Spieker circle and the nine-point circle, demonstrating parallel relationships involving radius, center, harmonic conjugates, and homothetic centers relative to the incenter, median point, and Nagel point of a triangle.
The thesis then proves that the Spieker circle is inscribed in two congruent …
A Study Of Temperature Effect On Adsorption Chromatography., Lie Tien Chang
A Study Of Temperature Effect On Adsorption Chromatography., Lie Tien Chang
LSU Historical Dissertations and Theses
No abstract provided.
Part I: The Addition Of Diphenylketene To Ortho-Benzoquinone. Part Ii: Diazoketones As Reagents For The Identification Of Organic Acids. Part Iii: The Bromo-2-Nitrobenzoic Acids., Joseph Martin Dechary
Part I: The Addition Of Diphenylketene To Ortho-Benzoquinone. Part Ii: Diazoketones As Reagents For The Identification Of Organic Acids. Part Iii: The Bromo-2-Nitrobenzoic Acids., Joseph Martin Dechary
LSU Historical Dissertations and Theses
No abstract provided.
Bridge Measurements Of The Equivalent Electrical Characteristics Of Selenium Rectifiers., Allan Walter Mcdonald
Bridge Measurements Of The Equivalent Electrical Characteristics Of Selenium Rectifiers., Allan Walter Mcdonald
LSU Historical Dissertations and Theses
No abstract provided.
The Reaction Of Organomagnesium Compounds With Triketones., Reuben F. Miller
The Reaction Of Organomagnesium Compounds With Triketones., Reuben F. Miller
LSU Historical Dissertations and Theses
No abstract provided.
A Special Study Of The Alpha-Chlorinated Toluenes And Their Mono Deuterium Derivatives., Stuart Baker Eglin
A Special Study Of The Alpha-Chlorinated Toluenes And Their Mono Deuterium Derivatives., Stuart Baker Eglin
LSU Historical Dissertations and Theses
No abstract provided.
A Critical Analysis Of Several Product And Factoring Formulas, Herbert Wills
A Critical Analysis Of Several Product And Factoring Formulas, Herbert Wills
Masters Theses
No abstract provided.
Aromatic Acetals : Their Synthesis And Alkylation, Robert Conner Gass
Aromatic Acetals : Their Synthesis And Alkylation, Robert Conner Gass
University of the Pacific Theses and Dissertations
The purpose of this investigation was to study the known methods of forming acetals and find one or several that could be used in further investigation. In connection with the reactions, the use of various catalysts was pertinent. Some of the catalysts used were hydrogen chloride, calcium chloride, ferric chloride, aromatic sulfonic acids, and other. There was no data available comparing the sulfonic acids with the inorganic salts and mineral acids. For that reason one of the subsidiary problems of this investigation was such a comparison.
In order to investigate stability, several acetals were subjected to conditions intended to produce …
Montan Wax From California Lignites, Robert John Kvick
Montan Wax From California Lignites, Robert John Kvick
University of the Pacific Theses and Dissertations
Montan wax has been extracted from the lignite deposits of Germany since the early part of the twentieth century, The wax was named by von Boyen (1901), The word Montan is derived from the Latin term montanus meaning "of a mountain," The wax has found extensive uses in polishes, insulating materials, candles, explosives, and special applications in the rubber industry, The increased demand for waxes for industrial uses and the limited supply of domestic origin has made the study of the sources and characteristics of domestic waxes desirable, California lignite has been shown to be a valuable source of Montan …
Tannin Content Of Certain California Oaks, Arthur Carton
Tannin Content Of Certain California Oaks, Arthur Carton
University of the Pacific Theses and Dissertations
The purpose of this paper is to investigate three California oaks as possible sources of tannin. Even though the study of the three varieties of tree may not be representative samples, the procedures developed may prove to be valuable in a more extensive research by other workers.
Geochemical Prospecting Applied To The Illinois-Kentucky Fluorspar Area, Matthew Peter Nackowski
Geochemical Prospecting Applied To The Illinois-Kentucky Fluorspar Area, Matthew Peter Nackowski
Doctoral Dissertations
"This study was completed to determine whether geochemical methods of prospecting could be applied to the search for fluorspar deposits in the Illinois-Kentucky fluorspar district.
During the course of the study, aspects of the geochemical cycle of fluorine under the climatic environment encountered were noted in the zone of weathering.
The Illinois-Kentucky fluorspar district supplies a large portion of the fluorite consumed in the United States. The producing deposits are of two geologic types. The vein deposits occur as nearly vertical tabular lenses or pods which occupy fractures. These deposits may reach the bedrock surface, but in any case, the …
Chromatography With Aqueous And Polar Solvents., Mary Veronica Drawe
Chromatography With Aqueous And Polar Solvents., Mary Veronica Drawe
LSU Historical Dissertations and Theses
No abstract provided.
The Theory Of Fractional Solvent Extraction And Its Application To Creosol Separation., Ada Lorine Ryland
The Theory Of Fractional Solvent Extraction And Its Application To Creosol Separation., Ada Lorine Ryland
LSU Historical Dissertations and Theses
No abstract provided.
The Expansion Of A Single-Valued Function Of Several Variables Having For Its Rangeadenumerable Set Of Real Numbers And For Its Domain Of Definitionaset Of Real Numbers, Nicholas Christ Scholomiti
The Expansion Of A Single-Valued Function Of Several Variables Having For Its Rangeadenumerable Set Of Real Numbers And For Its Domain Of Definitionaset Of Real Numbers, Nicholas Christ Scholomiti
Master's Theses
No abstract provided.
A New Basic Copper Phosphate Mineral From Santa Rita, New Mexico, David B. Givens
A New Basic Copper Phosphate Mineral From Santa Rita, New Mexico, David B. Givens
Earth and Planetary Sciences ETDs
Supergene minerals are not common, nor are they rare at Santa Rita, New Mexico. Kerr (1950,307) reports the presence of cuprite, melaconite, native copper, chrysocolla, machite and azurite. There is also smithsonite present.
The physical appearance of the mineral, coupled with preliminary determinations of the indices of refraction, gave a rough correspondence with dihydrite (Larson and Berman, 1934, 135). However, enough discrepancy existed to warrant taking powder and Weissenberg X-Ray pictures. From these it was evident immediately that the specimen was a new mineral species.
The Monadnock Volume 26, Number 1, December 1951, Clark University Geographical Society
The Monadnock Volume 26, Number 1, December 1951, Clark University Geographical Society
The Monadnock (Clark Geographical Society)
Volume 26, Issue 1 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).
The Red Cloud Sand And Gravel, A New Pleistocene Formation In Nebraska, C. Bertrand Schultz, Eugene C. Reed, A. L. Lugn
The Red Cloud Sand And Gravel, A New Pleistocene Formation In Nebraska, C. Bertrand Schultz, Eugene C. Reed, A. L. Lugn
Conservation and Survey Division: Faculty and Staff Publications
Recent studies of the stratigraphy and paleontology of the Pleistocene of Nebraska have resulted in additional data that require further clarification and partial revision of the Grand Island sand and gravel formation (1,2) in order that there may be no condusion as the results of varying usage of the term.
Nttl Engine Test 2 Petter Av2 Diesel Engine, Nebraska Tractor Test Lab
Nttl Engine Test 2 Petter Av2 Diesel Engine, Nebraska Tractor Test Lab
Nebraska Tractor Tests
No abstract provided.
Engine Test 1 Petter Ava2 Diesel, Nebraska Tractor Test Lab
Engine Test 1 Petter Ava2 Diesel, Nebraska Tractor Test Lab
Nebraska Tractor Tests
No abstract provided.
Odor Report (1951), Walter A. Lawrance
Supplement To Odor Report (1951), Walter A. Lawrance
Supplement To Odor Report (1951), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.