Thesis (Ph. D.)--University of Chicago, 1938. / Reproduced from type-written copy.

Thesis (M.S.)--Oregon State University, 2008. / Printout. Includes bibliographical references (leaves 39-40). Also available on the World Wide Web.

Thesis (Ph. D.)--University of Washington, 2006. / Vita. Includes bibliographical references (leaves 82-88).

-4Scm-1 whereas the hexamethyl was insulating. This was proposed to be due to differing stacking characteristics. The properties of the ternary salts were proved to be intrinsic and not solvent induced. The failure of the amphiphilic dipyrrylmethene to complex with TCNQ was proposed to be due to steric hindorance which encumbers the close approach of the TCNQ. The Langmuir film of the dipyrrylmethene was shown to undergo re-orientation on the subphase. The L-B film of a picolinium TCNQ charge transfer salt was shown not to under go a molecular re-orientation due to the increase in the area of the hydrophobic aliphatic chains.

The objective of this study is to determine the nature of the influence of recording and the recording industry upon musical activity. Sound recording is a major communications medium of the twentieth century. Yet there has been limited research into the influence of recording and the changes that it has driven. This study seeks to address this gap in understanding. The method chosen for the study was three separate case studies of the conductors Sir Thomas Beecham, Sir Georg Solti and Sir Simon Rattle. Each of these musicians had a major recording career, and in Rattle's case continues to do so. The data used in the study was collected from three sources: firstly through interviews with those possessing professional experience of the case-study subjects and of the record industry; secondly from archival documentation; and thirdly through published press interviews and commentaries. The analysis of commonalities and differences between the case study subjects indicated that each was generally in control of their involvement with recording, rather than the reverse. Three areas were identified as being of key importance: the relationship with record companies and with personnel within these; control over repertoire decisions; and mastery of the act of recording. Based on the experience of the three case-study subjects, a model of the influence of recording has been constructed. This relates each stage of the technological development of recording to its immediate consequences and to ‘meta-consequences', or the more far-reaching influences of recording. The principal ‘meta-consequences' are seen as being: an increase in knowledge; changes in performance standards; and the introduction of the idea of ethics into recording, with a re-emphasis upon the importance of the musical ‘act'. The study concludes with a discussion of possible future areas of research into the influence of recording and the record industry.

Since the discovery of high-temperature superconductors, there has been a worldwide effort towards the development of processes for fabricating coated conductors for power applications. Most of these processes are based on vapour phase deposition techniques that have relatively low growth rates. A high-rate processing route was proposed based on the observation of high growth rate of (RE)Ba2Cu3O7- δ superconducting compounds (RE = rareearth element) from a flux supersaturated with one or more RE elements by liquid phase epitaxy (LPE). LPE has been successfully used to grow YBCO thick films with both c- and a,b-orientations on (110) NdGaO3 substrates and pure c-oriented films on YBCO seeded (100) MgO and (100) SrTiO3 under carefully controlled growth temperature and undercooling. The film growth mode (c- or a,b-oriented) is determined by the growth rate, which is directly related to the level of RE supersaturation that could be controlled by the undercooling used along with the amount of total RE solubility in the solution. The LPE grown films were highly epitaxial and biaxially aligned with good in-plane and out-of-plane textures. YBCO thick films grown on NdGaO3 by LPE showed high Tc of ~92 K and zero-field Jc at 77 K of 2.5x105 A/cm2. The initial growth of YBCO was found to be a multi-nucleation process. However, above a critical film thickness, dislocations started to form as a lattice-misfit stress relieving mechanism that led to step formation and spiral growth around dislocation cores. The growth kinetics from an unstirred solution was found to obey a

In the conventional joints for aluminum core steel reinforced (A.C.S.R.) conductors the path of the electric current in the outer strands passes through two mechanical contacts, while for the inner strands the number of contacts is considerably more. It is recognized that the present techniques of making compression Joints is considered by many to be satisfactory. However, it is obvious that a continuous metal Joint would be superior. Recent advances in welding make the construction of such a Joint possible. In the Joints constructed for experimental purposes each strand of a 397,500 C M conductor was brought out between two aluminium sleeves and Heliarc welded. In the finished Joint the weld bonds the inner and outer sleeves and the Individual conductors. The ends of the joint are compressed to prevent ingress of moisture which may be injurious to the conventional steel compression sleeve which connects the steel cores together. Tests of the Individual strand resistance as measured between the central part of the Joint and the strands showed the strand resistances to be uniform and equal to an equivalent length of strand. This shows that each strand was satisfactorily connected at the weld. Overall resistance, heat and mechanical tests indicate that the welded-compression joint should be satisfactory in the field. In addition to the welded-compression joint two cast-aluminium Joints were also investigated. These, however, due to poor bonding were found unsatisfactory. / Applied Science, Faculty of / Mechanical Engineering, Department of / Graduate

The reflectivity of large single crystals of protonated and deuterated (TMTSF)₂Re0₄ and (TMTSF)₂BF₄ has been measured from ≈ 30 cm-¹ to ≈ 8000 cm-¹ using a Bruker IFS 113V Fourier Transform Interferometer for E / a and E / b' above and below the metal--insulator transitions at 177 K and 39 K respectively. The infrared powder absorption spectra of protonated and deuterated (TMTSF)₂Re0₄ has been measured from 200 cm˗¹ to 2000 cm˗¹. The Kramers-Kronig optical conductivity has been calculated from the reflectivity using Drude extrapolations to high frequency. The results for the conductivity for E / a show a one-dimensional density of states, characteristic of a one-dimensional semiconductor with strong electron-phonon coupling, with the vibrations appearing as resonances below the gap and as antiresonances above. The E / b' conductivity is smaller by almost two orders of magnitude than that for E / a, but displays the same semiconducting behavior. The phonons active in the E / b' polarization appear only as resonances. A normal coordinate analysis has been performed for protonated and deuterated TMTSF⁰ and TMTSF⁺. The results have been used to infer the frequencies of vibration and the deuterium shifts of TMTSF⁺⁰ׄ⁵. The molecular frequencies of vibration have been assigned on the basis of their observed frequencies and optical polarization, as well as their deuterium shifts. Some external phonons have also been assigned. The observation that many of the internal and external vibrations are split is due to the eightfold increase in the size of the unit cell (and subsequent reduction of the Brillouin zone) below the metal-insulator transition. The optical properties of the semiconducting state have been modelled for a one--dimensional molecular conductor with a twofold-commensurate charge-density wave, which accurately reproduces the effects of the lattice dimerization and the potential due to the anion chains. The calculations yield the electron-molecular-vibrational coupling constants for the totally symmetric a[formula omitted] vibrations of the TMTSF molecule. The model also yields a transfer integral of 1400 cm-¹ for both materials and semiconducting energy gaps of 2Δ = 1700 cm˗¹ and 2Δ = 1120 cm˗¹ for (TMTSF)₂ReO₄ and (TMTSF)₂BF₄ respectively. The optical conductivity in the E / b' polarization has been discussed in -terms of a two-dimensional band structure with anisotropic transfer integrals. The band structure calculations show the same general features as the measured spectra. / Science, Faculty of / Physics and Astronomy, Department of / Graduate

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