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Articles 67861 - 67890 of 69093
Full-Text Articles in Physical Sciences and Mathematics
The Rate Of Hydrolysis Of Ethyl-Α-Β-Dibromopropionate, Earl Ney
The Rate Of Hydrolysis Of Ethyl-Α-Β-Dibromopropionate, Earl Ney
Bachelors’ Theses
Experimentation on the rate of hydrolysis of esters is preceded only by the rate of inversion of cane sugar started by Wilhemy in 1850. However, work on ester hydrolysis soon took the stage in preference as the reaction most favorable to the study of reaction rates. Ostwald's work on the rate of hydrolysis of ethyl acetate in 1884 was the first monumental work and experimentation then proceeded so rapidly that in 1889 Arrhenius' theory of hydrogen ion catalysis and later the dissociation theory itself was born and nursed. Yes, nursed by many more ester hydrolysis experiments which built up such …
An Attempted Determination Of The Approximate Chemical Composition Of The Livingston Volcanics By The Fused Bead Technique, Robert D. Geach
An Attempted Determination Of The Approximate Chemical Composition Of The Livingston Volcanics By The Fused Bead Technique, Robert D. Geach
Bachelors Theses and Reports, 1928 - 1970
Many fine-grained igneous rocks, basaltic and felsitic in character, are difficult to classify. In numerous cases, it is impossible to classify these types of rocks by quick methods of identification. It was hoped at the beginning of this study that refractive indices of glasses formed by quick artificial fusion of samples from selected suites of igneous rocks would show a close correlation in chemical composition.
Dispersing Agents In The Pipette Method Of Soil Analysis, Eugene W. Price
Dispersing Agents In The Pipette Method Of Soil Analysis, Eugene W. Price
Bachelors Theses and Reports, 1928 - 1970
For many years the study of sediments has been a major problem in the field of geology. Especially is this true of the branch of sedimentology known as grain-size distribution. Throughout the years many classical experiments have been performed and procedures evolved from them, all with the purpose of a better and easier determination of the grain-size distribution of fine sediments, particularly the clays.
Factors Affecting The California Quail Populations In Uintah County, Utah, R. Lynn Nielson
Factors Affecting The California Quail Populations In Uintah County, Utah, R. Lynn Nielson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The California Quail is native to the coastal and semi-arid regions of California extending north into Oregon. Two subspecies are commonly recognized. the California Quail (Lophortyx californica brunnescens Ridgway), and the Valley Quail (Lophortyx californica californica Shaw). The two forms are very similar in coloration and habits and, for the purpose of this study, no effort is made to distinguish the two.
Geology Of The Mink Creek Region, Idaho, Allen S. Keller
Geology Of The Mink Creek Region, Idaho, Allen S. Keller
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The Mink Creek region is centered 14 miles northeast of Preston in Franklin County, Idaho (see Index Map, Figure 1). The area of this report comprises approximately 70 square miles. It is bounded on the north and south by parallels 42°17' and 42°11' North Latitude and on the east and west by meridians 111°37' and 111°49'. The easternmost part of the area is located in the Bear River Range and is part of the Cache National Forest.
The region is readily accessible. A paved Idaho State Highway goes through the center of the area and State Highway 34 skirts the …
The Incidence Of Lead Shot In Waterfowl Of The Pacific Flyway, With Special Reference To The Great Salt Lake Basin, Wayne H. Heuer
The Incidence Of Lead Shot In Waterfowl Of The Pacific Flyway, With Special Reference To The Great Salt Lake Basin, Wayne H. Heuer
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This study was conducted to determine basic data on the incidence of lead shot in ducks us ing the Great Salt Le.lee Basin. The study has been divided into two parts; (1) incidence of ducks carrying lead shot in their tissues and (2) incidenoe of ducks carrying ingested lead shot.
Phase Diagram: Sulfur In Beta-Phenylethyl Bromide, Robert L. Kling
Phase Diagram: Sulfur In Beta-Phenylethyl Bromide, Robert L. Kling
Bachelors’ Theses
In this work I wish to apply the phase rule to a particular mixture of sulfur in beta-phenylethylbromide. Through experimental data it will be shown how various concentrations change the temperature in the phases or what the temperature is for various concentrations of sulfur in the solvent beta-phenylethylbromide.
Further Studies Of The Reactions Of Quinoxaline And 2-Methylquinoxaline, Marcus N. Myers
Further Studies Of The Reactions Of Quinoxaline And 2-Methylquinoxaline, Marcus N. Myers
Theses and Dissertations
The present investigation was also made with the object of preparing the vinylquinoxalines and studying their 1,4- addition reactions. The attempts to prepare vinylquinoxalines were unsuccessful. However, sodium acetylide reacted with 2,3-dichloroquinoxaline to give a new compound which (from its analysis and properties) appears to be 2,3-bis(1-hydroxyethyl) quinoxaline . This new compound should be investigated further , as it may prove to be an intermediate in the preparation of vinylquinoxalines. The preparation of 2-methylquinoxaline has become very simple by the use of the method of Jones, Kornfeld and McLaughlin^5, which consists of condensing o-phenylenediamine with pyruvic aldehyde. The condensation of …
Some Reductions Of Substituted Benzalacetophenones By Aluminum Isopropoxide And Lithium Aluminum Hydride, Calvin Lyndall Fisher
Some Reductions Of Substituted Benzalacetophenones By Aluminum Isopropoxide And Lithium Aluminum Hydride, Calvin Lyndall Fisher
Master's Theses
While the literature contains a lnrge volume of material on the reduction of carbonyl compounds, the historical section of this thesis will be chiefly concerned with the reduction of -- unsaturated carbonyl compounds by catalytic hydrogenation, metal combinations, aluminum alkoxides and by lithium aluminum hydride.
The purpose of this thesis is to study the effect various substituents have on a conjugated system when the system is undergoing reduction by lithium aluminum hydride.
A Statistical Review Of 436 Submucous Resections With Post-Operative Results Of 338 Cases, D. Wilson Hales
A Statistical Review Of 436 Submucous Resections With Post-Operative Results Of 338 Cases, D. Wilson Hales
Loma Linda University Electronic Theses, Dissertations & Projects
[Abstract Not Included]
An Early Tertiary Stream Channel Between Fish And Pipestone Creeks, Ten Miles West Of Whitehall, Montana, Henry D. Olson
An Early Tertiary Stream Channel Between Fish And Pipestone Creeks, Ten Miles West Of Whitehall, Montana, Henry D. Olson
Bachelors Theses and Reports, 1928 - 1970
Driving between Butte, and Whitehall, Montana, on highway U.S. 10S, one observes an interesting phenomenon in the lower end of Little Pipestone Creek canyon. One side and the bottom of the canyon is cut inthe hard igneous rocks of the Boulder Batholith, and the other side of the canyon is made of unconsolidated sand, gravel, and cobbles.
A Study Of The Exchange Between P-Nitrobenzyl Iodide And Iodide Ion In Alcoholic Solutions., E. Lee Purlee
A Study Of The Exchange Between P-Nitrobenzyl Iodide And Iodide Ion In Alcoholic Solutions., E. Lee Purlee
Chemistry and Chemical Biology ETDs
The realm of this study embraces observation of the exchange of iodine and potassium iodide in absolute methanol, absolute ethanol and absolute n-propanol at temperatures of 30.9 °, 20.3 ° and 0.0 ° centigrade. The primary aims were to observe the effects of the p-nitro group upon the exchange rates in effects of the p-nitro group upon the exchange rates in the various solvents and to compare the results with those obtained for the benzyl iodide-iodide exchange.
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 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.
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.
Itaconic Acid Derivatives Of Sulfanilamide And Sulfone, Malcolm J. Thompson
Itaconic Acid Derivatives Of Sulfanilamide And Sulfone, Malcolm J. Thompson
Electronic Thesis and Dissertation
No abstract provided.
The Spieker Circle And Certain Related Configurations, Berthola E. Lumzy
The Spieker Circle And Certain Related Configurations, Berthola E. Lumzy
Electronic Thesis and Dissertation
No abstract provided.
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.
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 Linear Polymer X-Ray Scattering Model, Bernard Cohen
A Linear Polymer X-Ray Scattering Model, Bernard Cohen
Masters Theses
"In the development of X-ray scattering intensity curves physical models are necessary for the theoretical mathematical development involved. The purpose of this paper is the development of a physical model suitable for X-ray diffraction analysis or a linear polymer.
X-ray intensity patterns may be used to give a greater insight as to the atomic structure, configuration or atoms, molecular weight, and therefore a greater knowledge of the structure of matter, both microscopic and macroscopic. The converse may sometimes be used. An atom or molecular model is constructed, from this model X-ray scattering curves may be derived. These curves may be …
A Preliminary Study Of Shad, Alosa Sapidissima (Wilson), Spawning In Some Virginia Rivers, William Henry Massmann
A Preliminary Study Of Shad, Alosa Sapidissima (Wilson), Spawning In Some Virginia Rivers, William Henry Massmann
Dissertations, Theses, and Masters Projects
No abstract provided.
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.
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.
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 …
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.
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.
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.
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 …
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 …