Physical Sciences and Mathematics Commons^™

A Study Of The Heat Effects At Electrodes During Electrolysis, Howard Frank Holmes

Doctoral Dissertations

Temperature difference measurements were made during the electrolysis of aqueous copper sulfate between copper electrodes. The temperature differences measured were those between the cathode and the anode, the cathode solution, and the anode and the solution. These values were obtained as a function of the time of the electrolysis. The variation of these differences with time and their magnitudes were explained in terms of the entropy changes occurring at the electrodes, resistance, and polarization.

The effect of some inert electrolytes on these temperature differences was determined as was the effect of gelatin. Explanations for these effects were given in terms …

Synthesis Of 7-(Dialkylaminoalkyl)-Benzo [C] Phenothiazines; The Metalation Of 7h-Benzo [C] Phenothiazine With N-Butyllithium, William Earl Tatum

Doctoral Dissertations

Introduction: Phenothiazine is one of the more widely investigated heterocyclic molecules known to modern chemistry. The founding of the synthetic dye industry in the latter part of the nineteenth century stimulated many new fields of organic research, one of which was phenothiazine chemistry. Bernthsen, known as father of phenothiazine chemistry, first synthesized (1) this compound in 1883, after suspecting its presence in the nucleus of the methylene blue dyes.

Since that time phenothiazine and its derivatives have found uses as antioxidants (2), antihistamines (3), antiemetics (4), and in the treatment of Parkinson's disease (5). During the past decade, considerable attention …

A Study Of The Reduction Of Certain 1-Substituted Naphthalenes By Alkali Metals In Liquid Ammonia, Gerald Titus Davis

Doctoral Dissertations

(From the Introduction)

The first phase of the work to ·be presented was aimed at studying the conditions under which 1-aminonaphthalene is efficiently reduced to the 5,8-dihydro derivative and thereby finding experimental evidence which would be of value in the selection of a mechanism for the reduction. After the initial work, the study was extended to include the reduction of other 1-substituted naphthalenes.

Spectral Theory Of Self-Adjoint Ordinary Differential Operators, Charles C. Oehring

Doctoral Dissertations

Introduction: Many of the properties of the ordinary Fourier series expansion of a given function are shared by the orthogonal expansion in terms of eigenfunctions of a second order ordinary differential operator. Let p = p(x) and q = q(x) be real-valued functions such that p, p', and q are continuous, and p(x) > 0, on a finite interval a ≤ x ≤ b. Let λ be a complex parameter. The classical Strum-Liouville theory [9, section 27; 4, Chapter 7; 21, Chapter 1]¹ is concerned with solutions of the differential equation -(py') + qy = λ, which satisfy certain real …

The Use Of The Neutral Bis-Cyclopentadienyl Metal Compounds Of Iron, Cobalt, And Nickel In The Catalysis Or Hydrogen­Ation Reactions, Andrew Jackson Chadwell Jr.

Doctoral Dissertations

The neutral bis-cyclopentadienyl metal compounds of iron, cobalt, and nickel were prepared and studied as possible sources of catalytically active iron, cobalt, and nickel. Nickelocene and cobaltocene are re­duced to the free metal and cyclopentane in cyclohexane solution with hydrogen in the absence of a catalyst using hydrogen at 1000 psi. The reduction of nickelocene takes place at 60°, and the reduction o! cobaltocene occurs at 160-170°. Induction periods were observed. The hydrogen reduction of ferrocene was not achieved. The hydrogenation reactions of benzene , cyclohexene , acetone , ethyl laurate , nitrobenzene , and nitroethane were studied with nickelocene …

Studies Of The Solvent Extraction Of Cadmium And Silver Dithizonates, Frank Falkoner Dyer

Doctoral Dissertations

(From the Summary)

Studies of masked and non-masked extractions of cadmium and silver dithizonates have been made from aqueous solutions into various organic solvents containing dithizone. The term, masked extraction, was used to designate extractions from aqueous solutions containing chemical species which complex with the ions of silver and cadmium. The term, non-masked extraction, was applied to extractions from aqueous solutions containing the perchlorate ion which was assumed not to form complexes with the ions of silver and cadmium. Cadmium dithizonate extractions were made from aqueous solutions into chloroform, and silver dithizonate extractions were made from aqueous solutions …

Hydrodynamical Theory Of Spontaneous Fission With Applications To Mendelevium, William Douglas Foland

Masters Theses

This thesis will consider in some detail the calculation of some of the quantities considered by the papers reviewed in Chapter I. The objective of the thesis is the prediction of spontaneous-fission half-lives for nuclei with high atomic numbers.

Factors Governing The Speed Of Application Of Science, C. F. Carter, B. R. Williams

The Harlan D. Mills Collection

No abstract provided.