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Articles 32221 - 32250 of 33273
Full-Text Articles in Entire DC Network
Thermodynamics Of Metal-Ligand Interactions In Solution I. The Thermodynamics Of Metal-Cyanide Interaction ; Ii. Application Of The Entropy Titration Technique To Metal-Ligand Systems ; Iii. Log K, [Delta]H And [Delta]S Values For The Interaction Of Sulfate Ion With Metal Ions ; Iv. Interaction Of Mercuric Cyanide With Thiourea In Water-Ethanol Solvent Mixtures, Delbert J. Eatough
Theses and Dissertations
Log K values, valid at zero ionic strength are reported for the interaction in aqueous solution of CN- with Ni2+ and Hg2+ at 10°, 25° and 40°C, and with Pd2+ at 25°C. ∆H° and ∆S° values valid at zero ionic strength and 25°C are also reported for the interaction of CN- with Hg2+ and for the reaction Pd(CN)42- + CN- = Pd(CN)53-. In connection with the study of Pd2+ - CN- interaction, log K values for the hydrolysis of Pd2+ to give PqOH+ and Pd(OH)2 and an E° value for the reaction Pd(s) = Pd2+ + 2e- are reported. A …
Preliminary Studies On The Mechanism Of The Rupe Reaction, Ann D. Anderson
Preliminary Studies On The Mechanism Of The Rupe Reaction, Ann D. Anderson
All Master's Theses
The purpose of this study is to analyze the products of the Rupe reaction and the optimum conditions for their formation. Studies on product formation as a function of time were also necessary to detect any intermediate compounds.
Radiolysis Of The Extract From The Sawdust Of The Ponderosa Pine, Mervin B. York
Radiolysis Of The Extract From The Sawdust Of The Ponderosa Pine, Mervin B. York
Loma Linda University Electronic Theses, Dissertations & Projects
Portions of an acetone-hexane (1:4) extract of Ponderosa pine sawdust were exposed to gamma and ultraviolet radiation. The three solutions, including the original, were checked for antibiotic activity on: Staphylococcus aureus Escherichia coli and Bacillus cereus. Results indicated that each solution inhibited the growth of the bacteria.
The three solutions were separated into fractions by 'column' chromatography on silica gel, using chloroform-carbon tetrachloride (1:1) as the elutant and then 10-20-50-80% ethanol in the chloroform- carbon tetrachloride mixture and finally 100% ethanol. Ten fractions were obtained from each sample and these were each tested on the bacteria. Results indicated a number …
Secondary Reactions And Partial Rate Factors In The Sulfonation Of Chlorobenzene And Toluene, Ernest Arthur Brown
Secondary Reactions And Partial Rate Factors In The Sulfonation Of Chlorobenzene And Toluene, Ernest Arthur Brown
Theses and Dissertations
The sulfonation of chlorobenzene, chlorobenzene-benzene, and toluene-benzene mixtures by sulfur trioxide in liquid sulfur dioxide at -12.5° C. was studied to obtain isomer distribution and relative rate data. The isomer distribution for the reaction on chlorobenzene was determined by an isotope dillution technique. Relative rate experiments were conducted by sulfonating C14 labeled benzene in competition with nonradioactive chlorobenzene and toluene and the count rate of the products was used to determine product composition. Ultraviolet spectrophotometry was also used to investigate variations in isomer distributions as a function of sulfur trioxide concentration. The apparent relative rates of sulfonation (kX/kB) as calculated …
Approach To Nickel-Tin Alloy Electrodeposition And Parameters Of The Nickel Tartrate Complex, Kenley R. Lee
Approach To Nickel-Tin Alloy Electrodeposition And Parameters Of The Nickel Tartrate Complex, Kenley R. Lee
Masters Theses
Statement of Problem
The study of conditions required for the electrodeposition of a nickel-tin alloy from baths other than the fluoride bath and the acetate bath was undertaken. The research included the correlation of thermodynamic and kinetic properties of electrode processes fro the electrodeposition of the alloy desired.
The research also included the determination of the formula and formation constant of the nickel tartrate complex. The tartrate ion was a possible constituent in a bath for the electrodeposition of the alloy.
The Synthesis Of 3-Hydroxy-4-Imidazolidiones, Victor L. Rizzo
The Synthesis Of 3-Hydroxy-4-Imidazolidiones, Victor L. Rizzo
Masters Theses
No abstract provided.
Preparation And Spectral Studies Of Heterocyclic Hydrazone Analogs, Michael Mcaneny
Preparation And Spectral Studies Of Heterocyclic Hydrazone Analogs, Michael Mcaneny
Masters Theses
No abstract provided.
A Spectral Study Of The 4-Arylamino-1,2-Naphthoquinone System, Lloyd Myles Phipps
A Spectral Study Of The 4-Arylamino-1,2-Naphthoquinone System, Lloyd Myles Phipps
Masters Theses
No abstract provided.
Integral Series Solution Of The Schrödinger Equation For The Helium Atom, W. Byers Brown, Ronald White
Integral Series Solution Of The Schrödinger Equation For The Helium Atom, W. Byers Brown, Ronald White
Center for Advanced Mineral and Metallurgical Processing (CAMP)
No abstract provided.
Analytic Power-Series Solution Of The Schrödinger Equation For The Helium Atom, W. Byers Brown, Ronald White
Analytic Power-Series Solution Of The Schrödinger Equation For The Helium Atom, W. Byers Brown, Ronald White
Center for Advanced Mineral and Metallurgical Processing (CAMP)
No abstract provided.
A Qualitative Study Of The "Bohlmann Band", John Alfred Richman Jr.
A Qualitative Study Of The "Bohlmann Band", John Alfred Richman Jr.
Master's Theses
This thesis is concerned with a qualitative study of the "Bohlmann Band", a result of C-H stretching frequencies, which is often observed in the 3.57 to 3.70 μ region in the infrared absorption spectra of amines. The appearance of this band is characteristic of tertiary amines although a few exceptions have been encountered.
The Synthesis, Characterization And Reactions Of 1,2-Dihydro-2-Thiono, 3,1-Benzoxazin-4-One And Its Isomer The 3,1-Benzothiazine-2 (1h), 4-Dione, Joan Louise Davis
The Synthesis, Characterization And Reactions Of 1,2-Dihydro-2-Thiono, 3,1-Benzoxazin-4-One And Its Isomer The 3,1-Benzothiazine-2 (1h), 4-Dione, Joan Louise Davis
Chemistry Honors Papers
This 52 page thesis investigates the reactions of thioisatoic anhydride with sodium hydroxide, ammonia, a series of diprotic amines and methyl iodide.
The Synthesis Of 2-Carboxyethyl-P, P-Diphenylphosphine And A Study Of It As A Potential Chelating Agent, Harriet V. Taylor
The Synthesis Of 2-Carboxyethyl-P, P-Diphenylphosphine And A Study Of It As A Potential Chelating Agent, Harriet V. Taylor
Chemistry Honors Papers
This 24 page thesis examines the synthesis of organo-phosphorous acids and their stability as ligands.
Equilibrium Constants Of Various Polyol-Borate Systems, Karen L. Wanner
Equilibrium Constants Of Various Polyol-Borate Systems, Karen L. Wanner
Chemistry Honors Papers
This 26 page thesis examines the polyol-borate system.
Synthesis Of Hydroxy Tetronic Acid, Phyllis Elaine Hoar
Synthesis Of Hydroxy Tetronic Acid, Phyllis Elaine Hoar
Senior Scholar Papers
A Historical Introduction is given as background material to the problem of the existance of an ?-hydroxy-?-substituted tetronic acid as the intermediate in the oxidation of tetronic acids to ?-diketones. Three schemes are proposed by which this intermediate may be synthesized, starting with ethyl acetoacetate. In the first scheme the ?-substituted tetronic acid is oxidized by lead tetraacetate to the ?-acetoxy-?-substituted compound. In the second and third schemes, the lead tetraacetate oxidation can be applied to the ?-substituted acetoacetic ester, or the ?-substituted acetoacetic ester can be chlorinated with sulfuric chloride and then converted to the ?-acetoxy ester. Experimental work …
Experiments On The Inactivation Of Zinc By The Mineral Fractions Of The Soil, John J. Hassett
Experiments On The Inactivation Of Zinc By The Mineral Fractions Of The Soil, John J. Hassett
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Zinc deficiency, in many cases, is closely related to organic matter decomposition. DeRemer and Smith (1964) studied the effects of decomposing sugar beet tops on the reactions of Zn65 in a Portneuf soil. They found that with time the Zn65 associated with lime minerals, exchangeable, and water soluble fractions of the soil decreased, while that found with the organic and mineral fractions increased. This increase in the mineral fraction is of particular interest, since the majority of the Zn65 was found to be with this fraction after a period of time. They also showed that the increase …
Some Observations On The Chemical Behavior Of Carrier-Free Iodine-131 And Dilute Carrier Iodine0127, Manning S. Reynolds
Some Observations On The Chemical Behavior Of Carrier-Free Iodine-131 And Dilute Carrier Iodine0127, Manning S. Reynolds
Chemistry and Chemical Biology ETDs
Unexpected behavior by very small amounts of iodine has been noted by biochemical, medical, and ecological workers. It also has been shown that mild oxidation of carrier-free iodide-131 produced previously unknown species of iodine compounds. It was of interest to determine whether such species also result from the reduction of iodate.
While studying the formation of carrier-free iodate-131 by perchloric acid oxidation of iodide-131 at elevated temperatures, it was found that the acid is not directly responsible for the formation of iodate. Instead, the oxidation is accomplished by a volatile material (thought to be chlorine dioxide) formed only in perchloric …
Metal Complexes Of 1-Substituted-3-Hidroxyueeas, James C. Dabrowiak
Metal Complexes Of 1-Substituted-3-Hidroxyueeas, James C. Dabrowiak
Masters Theses
No abstract provided.
A Modern Philosopher's Stone, Grant Gill Smith
A Modern Philosopher's Stone, Grant Gill Smith
Faculty Honor Lectures
Alchemists, the forerunners of chemists, for more than a millennium sought the "Philosopher's Stone"-the transmuting agent that could change imperfect base metals such as lead and tin to the noble metals, gold and silver, and also serve as the Elixir of Life to heal the infirmities of man and prolong his existence on earth.
Where alchemy failed, chemistry, in little more than a century, has succeeded in finding the "Philosopher's Stone," for it is now not only possible to transmute one metal into another and heal many of man's infirmities, but scarcely a facet of man's life has not been …
Resonance Absorption Of P-Benzosemiquinone In The Zeeman Region, Juana Vivó Acrivos
Resonance Absorption Of P-Benzosemiquinone In The Zeeman Region, Juana Vivó Acrivos
Faculty Publications, Chemistry
No abstract provided.
Reaction Of Titanium Tetrafluoride With Di-N-Propylamine In Acetonitrile, Roger Nass
Reaction Of Titanium Tetrafluoride With Di-N-Propylamine In Acetonitrile, Roger Nass
Honors Theses, 1963-2015
No abstract provided.
Phalaris Staggers : Prevention By Cobalt Bullets, Bryan J. Gorddard, P. P. Mann, A. J. Hadlow
Phalaris Staggers : Prevention By Cobalt Bullets, Bryan J. Gorddard, P. P. Mann, A. J. Hadlow
Journal of the Department of Agriculture, Western Australia, Series 4
FARMERS in the south west of Western Australia are familiar with the use of cobalt for the prevention of ill-thrift and deaths due to cobalt deficiency in sheep and cattle.
Less common is the use of cobalt for the prevention of chronic phalaris poisoning, known as phalaris staggers.
This condition is well known in eastern Australia, but only isolated cases have been recorded in W.A. no doubt due to the relatively small area sown to phalaris in this state.
Palladium And Platinum Complexes Of Substituted Cycloolefins, Gerald Brady Mccauley
Palladium And Platinum Complexes Of Substituted Cycloolefins, Gerald Brady Mccauley
University of the Pacific Theses and Dissertations
Much of the fundamental work on complexation of cycloolefins by platinum metals has been laid down by several workers and ranges from complexes of butadiene those of cyclododecatriene. The work here was chiefly a continuation of research on cycloolefin complexes which appear in papers by Kuljian and Frye (30,31,44). Most of this work on the complexes of cyclic seven, eight, and twelve carbon ligands was repeated here to insure a more complete laboratory background and for verification of previously reported literature data on these compounds. These compounds were used a s basis for comparison to original compounds developed in the …
The Effects Of Shearing Time And Stocking Rate On Wool Production, R J. Lightfoot
The Effects Of Shearing Time And Stocking Rate On Wool Production, R J. Lightfoot
Journal of the Department of Agriculture, Western Australia, Series 4
THE results of the first experiment comparing "autumn" versus "spring" shearing over a two-year period were published in 1960.
In this experiment the autumn-shorn ewes cut heavier greasy fleeces (even though they also reared considerably more lambs) with less tender wool, resulting in a higher average return per head from this group.
The autumn-shorn wool carried more seed, was less attractive and contained relatively more pieces than did the spring-shorn wool.
A Polarographic Study Of Selected Metal Complex Ions Of Several P-Tosyl Amino Acids, Joseph Martin Reyes
A Polarographic Study Of Selected Metal Complex Ions Of Several P-Tosyl Amino Acids, Joseph Martin Reyes
University of the Pacific Theses and Dissertations
A polarographic study of the complexes of selected metal ions and the p-Tosyl derivatives of the amino acids; glycine, glutamic acid and lysine has been made to determine their coordination number, formula, dissociation constant and free energy of formation.
A Study Of The Formation Of Cyclic Allenes From 2,3-Dibromocycloalkenes, Michael John Millam
A Study Of The Formation Of Cyclic Allenes From 2,3-Dibromocycloalkenes, Michael John Millam
University of the Pacific Theses and Dissertations
This investigation was undertaken in an attempt to form strained cyclic allenes and to study their chemistry. The method chosen for the attempted formation of strained cyclic allenes was the determination of the corresponding 2,3-dibromocycloalkene. 2,3-Dibromocyclononene was synthesized during the course of this investigation so that its debromination to the 1,2-cyclononadiene, which is the smallest stable, 1,2-cycloalkadiene, could be studies as model for the debromination of smaller 2,3-dibromocycloalkenes was initiated. The formation of 1,2-cyclohexadiene was attempted by the debromination of the 2,3-dibromocyclohexene. Evidence for the presence of this unstable intermediate was sought via the use of trapping agents.
A Comparative Study Of Inductive Influence On The Hydrolysis Of Beta-Thioglucopyranosides By Beta-Thioglucosidase And Beta-Glucosidase, Robert W. Miller Jr.
A Comparative Study Of Inductive Influence On The Hydrolysis Of Beta-Thioglucopyranosides By Beta-Thioglucosidase And Beta-Glucosidase, Robert W. Miller Jr.
All Master's Theses
A series of phenyl-D-thioglucopyranosides were prepared and characterized in order to determine the absolute specificity of the .B-thioglucosidase and B-glucosidese enzyme systems toward the th1oglucosidic bond. The specificity of B-glucosidase of almond emulsin toward oxygen linkage seems to be absolute, since no hydrolysis was observed by this enzyme system toward the phenyl-D-thioglucopyranosides. The P-th1oglucosidase system was found to hydrolyze only two of the thioglucopyranosides. It was apparent that only where the electron-attracting substituents in the phenyl group were strong enough to greatly weaken the strength of the sulfur linkage, as in the case of the nitro group, would there be …
Infrared Spectra And Magnetic Properties Of Fluorine Substituted Copper (Ii) Alkanoates, Jose G. Rodriguez
Infrared Spectra And Magnetic Properties Of Fluorine Substituted Copper (Ii) Alkanoates, Jose G. Rodriguez
Masters Theses
"The purpose of this study was to prepare some selected copper(II) fluorcalkanoates, investigate their magnetic susceptibilities, study the infrared spectra of these salts and compare these properties to those of the unfluorinated copper(II) alkanoates….
The experimental data obtained indicate that the copper(II) trifluoroacetate, perfluoropropanoate and perfluorosuccinate does not form a binuclear cage structure. Copper(II) 3-(trifluoromethyl) butanoate with a magnetic moment of 1.4 should possess a binuclear case structure similar to copper( II) acetate monohydrate. The structure for copper( II) perfluoroglutarate monohydrate with a magnetic moment of 1.63 B.M. should have a structure somewhere between the two aforementioned structures"--Abstract, page ii.
A Photo-Catalytic Enzymatic Hydrolysis, Michael Mosby Daly
A Photo-Catalytic Enzymatic Hydrolysis, Michael Mosby Daly
Masters Theses
No abstract provided.
Radial Pressure Gradient In Turbulent Pipe Flow, Gary Kent Patterson, Walter J. Ewbank, Virgil A. Sandborn
Radial Pressure Gradient In Turbulent Pipe Flow, Gary Kent Patterson, Walter J. Ewbank, Virgil A. Sandborn
Chemical and Biochemical Engineering Faculty Research & Creative Works
Measurements made with a Prandtl static pressure probe have demonstrated that a radial pressure gradient does exist in turbulent pipe flow with approximately the magnitude predicted by Sandborn from hot-wire anemometry measurements.