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The Effect Of The Degree Of Cationic Charge On The Binding Strength Of A Cationic Starch-Kaolin Clay Coating, Hugh K. Myers
The Effect Of The Degree Of Cationic Charge On The Binding Strength Of A Cationic Starch-Kaolin Clay Coating, Hugh K. Myers
Masters Theses
No abstract provided.
Kinetics Of The Metal Exchange Reaction Between N, N'-Bis (2-Picolyl) Ethylenediaminenickel (Ii) And Copper (Ii), Craig Lee Barsuhn
Kinetics Of The Metal Exchange Reaction Between N, N'-Bis (2-Picolyl) Ethylenediaminenickel (Ii) And Copper (Ii), Craig Lee Barsuhn
Masters Theses
No abstract provided.
The Kinetics Of The Metal Exchange Reaction Between Biseminodiacetatonickelate (Ii) And Copper (Ii), Stephen H. Erickson
The Kinetics Of The Metal Exchange Reaction Between Biseminodiacetatonickelate (Ii) And Copper (Ii), Stephen H. Erickson
Masters Theses
No abstract provided.
Rate Of Initiation Of Pyrolysis Of Pentachloroethane Using The Toluene Carrier Gas Technique, Teodomiro Cuzcano
Rate Of Initiation Of Pyrolysis Of Pentachloroethane Using The Toluene Carrier Gas Technique, Teodomiro Cuzcano
Masters Theses
No abstract provided.
The Synthesis And Reactions Of Some Α, Β-Unsaturated Diazoketones, Virendra K. Sood
The Synthesis And Reactions Of Some Α, Β-Unsaturated Diazoketones, Virendra K. Sood
Masters Theses
No abstract provided.
Simultaneous Knudsen- And Torsion-Effusion Measurements Of The Vapor Pressures Of Tetraphenyl Silane And Hexaphenyl Disilane, Luz Marina Calle
Simultaneous Knudsen- And Torsion-Effusion Measurements Of The Vapor Pressures Of Tetraphenyl Silane And Hexaphenyl Disilane, Luz Marina Calle
Masters Theses
No abstract provided.
A Study Of The Ability Of Surface Active Materials To Increase The Evaporation Rates Of Small, Freely Falling Water Drops, David Alan Sierawski
A Study Of The Ability Of Surface Active Materials To Increase The Evaporation Rates Of Small, Freely Falling Water Drops, David Alan Sierawski
Masters Theses
"The evaporation rate at 30°C of water droplets partially covered by surface active materials (SAM) were determined. While two of the SAM were studied at a single dew point depression (ΔTDP), seven others were examined over a range of ΔTDP values. It was found, by comparison with pure water drops under identical conditions, that SAM increases the evaporation rate as compared to the rate of an uncontaminated drop. The lack of effect of the hydrophobic chain length and the possible effect of the hydrophilic group on this phenomenon are discussed. The explanation proposed is that at 30°C …
Mechanistic Studies Of Cobalt Super Nucleophiles, Audrey Yeh Ku
Mechanistic Studies Of Cobalt Super Nucleophiles, Audrey Yeh Ku
Masters Theses
A study was initiated on the hypothesis, by Ugi and co-workers, that cyclopropyl, cyclobutyl, and cyclopentyl electrophiles might undergo nucleophilic substitution reactions with retention of configuration.
A simple, high yield synthesis of both cis and trans-2-phenylcyclopropyl chlorides from styrene and chloroform is described. Reaction of each of these alkylating agents with the very nucleophilic cobaloxime super-nucleophile ultimately gave peroxy compounds which appear to arise from insertion of oxygen into the carbon-cobalt bond.
Neither trans-2-phenylcyclopentyl tosylate nor trans-2-phenylcyclohexyl tosylate would alkylate low valent cobaloximes under standard conditions.
A partial synthesis of the 2-phenylcyclobutyl tosylate is described along with suggestions for future …
Desorption Of Phosphorus From Si (111) Surfaces, Cesar Michel Magnin
Desorption Of Phosphorus From Si (111) Surfaces, Cesar Michel Magnin
Masters Theses
"Auger electron spectroscopy and mass analysis are used as complementary methods in evaluating desorption kinetics. For phosphorus on silicon, the order of desorption and activation energies of desorption are determined from continuously monitored phosphorus Auger electron signals during heating. These measurements indicate that diatomic phosphorus dissociates when adsorbed onto clean silicon. Mass spectrometer flash desorption spectra show that at least four distinct surface bonds are associated with the desorption of phosphorus. The dominant desorbed species is diatomic phosphorus at high coverage (> 0. 1 monolayer) and atomic phosphorus at low coverage (< 0.07 monolayer)"--Abstract, page ii.
Adsorption Of Water On Gold, Jean-Marc Louis Deschanel
Adsorption Of Water On Gold, Jean-Marc Louis Deschanel
Masters Theses
"Water adsorption isotherms on gold films were measured with a quartz crystal microbalance. Two gold films were studied: a "dirty" gold film contaminated by approximately one monolayer of carbon, and a "clean" gold film prepared by evaporating gold from a heated tungsten wire under high vacuum.
Water was found to chemisorb on both films according to a Freundlich type adsorption isotherm. Isosteric heats of adsorption were computed from the isotherm data. On the "clean" gold surface the isosteric heat showed a logarithmic decrease with increasing water coverage. The highest measured value for the heat of adsorption was 35 kcal mole …
The Isolation And Purification Of A Fluorescent Compound From Pseudomonas, Thomas M. Davey
The Isolation And Purification Of A Fluorescent Compound From Pseudomonas, Thomas M. Davey
Masters Theses
Fluorescence in certain land snails has been found to arise from a bacteria carried by the snails. The bacteria, a genus of Pseudomonas, produce a pigment complex in iron-deficient media. The pigment complex consists of both fluorescent and non-fluorescent pigments. One of the fluorescent compounds was isolated and purified by paper chromatography using several different solvent systems.
Absorption and fluorescent spectra of the compound at a number of pH values were measured and the changes with pH of both the intensity and the color of the fluorescence were observed. The purified compound was ninhydrin negative but after acid hydrolysis …
The Conductance Of Some Polyvalent Electrolytes, Jack Lee Worthington
The Conductance Of Some Polyvalent Electrolytes, Jack Lee Worthington
Masters Theses
A new compound, 1,3,5-triphenylbenzene-4' ,4",4"'-trisulfonic acid, was synthesized by treating triphenylbenzene in 1,2-dichloroethane with chlorosulfonic acid. The reaction appears to be quantitative. Conductance measurements were then made on the sodium, potassium, and lanthanum salts of this new acid and of 1,3,5-benzenetrisulfonic acid.
The choice of these acids was based on two factors: 1) the desire to prepare a 3-3 symmetrical unassociated electrolyte which would allow the determination of a more reliable equivalent ionic conductance value for La3+ and 2) an interest in using the Murphy-Cohen equation to determine solute parameters such as association constants if association is present.
Conductance …
The Consideration Of Some Aspects Of Two Methods Used To Study Ion Association, Richard Karl Gard
The Consideration Of Some Aspects Of Two Methods Used To Study Ion Association, Richard Karl Gard
Masters Theses
An investigation was made into the possibility of determining thermodynamic ion association equilibrium constants for salts important in the study of seawater using spectrophotometry and ion selective electrodes. Calcium sulfate was used as the test salt. The success of the spectrophotometric method was found to depend upon the choice of a suitable indicator and refinement of the proper instrumental techniques. The indicators investigated were 1-(2'-hydroxy-1'-benzeneazo)-2-hydroxynaphthalene, 1-(2'-hydroxy-5'-chloro-1'-benzeneazo)-2-hydroxynaphthalene, and ammonium purpurate (murexide). Ammonium purpurate was found to be the most suitable indicator. Spectra of these three indicators and their calcium complexes at pH 10 are included in the paper. The ion selective …
Computer Investigation Of The Variation Of Conductivity With Concentration, Larry Macpeers Shadwick
Computer Investigation Of The Variation Of Conductivity With Concentration, Larry Macpeers Shadwick
Masters Theses
Computer programs were developed tor the conductance equations of R. M. Fuoss and L. Onsager as well as for the conductance equations of T. J. Murphy and E. G. D. Cohen. These programs were used to calculate values from selected conductance measurements. The resulting values were compared with values produced by other computer programs using the equations of Fuoss and Onsager as well as the equations of E. Pitts. The comparisons demonstrated the equations of Murphy and Cohen to be the equal of or superior to the other equations for the majority of cases. The equations of Pitta were superior …