Thesis (M.Phil.)--Chinese University of Hong Kong. / Bibliography: leaves [4]

Typescript, etc.

Pong, Yue Hin = 超低溫費米氣體中的對關聯粒子 / 龐宇軒. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2007. / Includes bibliographical references (leaves 77-81). / Text in English, abstracts in English and Chinese. / Pong, Yue Hin = Chao di wen fei mi qi ti zhong de dui guan lian li zi / Pang Yuxuan. / Chapter 1 --- Introduction --- p.1 / Chapter 2 --- Review on BCS theory --- p.4 / Chapter 2.1 --- BCS in uniform gas --- p.4 / Chapter 2.2 --- Hartree Fock Bogoliubov equations --- p.7 / Chapter 2.3 --- Regularization techniques --- p.13 / Chapter 2.4 --- Homogeneous solution to HFB --- p.15 / Chapter 3 --- HFB Computation --- p.17 / Chapter 3.1 --- Example: 1D infinite well --- p.18 / Chapter 3.2 --- Example: 1D SHO --- p.22 / Chapter 3.3 --- Example: Spherical harmonic oscillator --- p.23 / Chapter 3.4 --- Conclusion --- p.26 / Chapter 4 --- Natural Orbits --- p.28 / Chapter 4.1 --- Two-point correlation functions --- p.29 / Chapter 4.2 --- Connection with the BCS --- p.32 / Chapter 4.3 --- Natural orbits in a spherical harmonic potential --- p.33 / Chapter 4.4 --- Remarks --- p.38 / Chapter 5 --- Bosonic characters of atomic Cooper pairs across resonance --- p.43 / Chapter 5.1 --- Resonance in Fermi gas --- p.44 / Chapter 5.2 --- Bosonic tests --- p.50 / Chapter 5.3 --- Choosing a Cooper pair wave function --- p.52 / Chapter 5.3.1 --- Cooper pair I --- p.52 / Chapter 5.3.2 --- Cooper pair II --- p.55 / Chapter 5.4 --- Results in a uniform gas --- p.55 / Chapter 5.5 --- Remark --- p.61 / Chapter 6 --- Time dependent BCS: A numerical study --- p.63 / Chapter 6.1 --- Time evolution in uniform BCS --- p.64 / Chapter 6.2 --- Perturbation to interaction strength --- p.66 / Chapter 6.2.1 --- Sudden decrease in the interaction strength --- p.66 / Chapter 6.2.2 --- Sinusoidal variation of interaction strength --- p.68 / Chapter 6.2.3 --- A decaying energy gap --- p.69 / Chapter 6.3 --- Perturbation to particle numbers --- p.71 / Chapter 6.4 --- Remarks --- p.74 / Chapter 7 --- Summary and Outlook --- p.75 / Chapter 7.1 --- Outlook --- p.75 / Bibliography --- p.77 / Chapter A --- Analytic solutions to homogeneous BCS --- p.82 / Chapter B --- Local Density Approximation (LDA) --- p.84 / Chapter B.1 --- One dimensional LDA --- p.85 / Chapter C --- Finding the regularized Green's Function --- p.87 / Chapter D --- Variational approach to finding natural orbits --- p.90 / Chapter D.1 --- Variation with respect to natural orbits --- p.90 / Chapter D.2 --- Variation with respect to the occupation amplitude --- p.93

Thesis (Ph. D.)--Rijksuniversiteit te Leiden, 1970. / Includes bibliographical references (p. 82-83).

The dynamics of propelling a pig through a natural gas pipeline, using the gas being transported, are analyzed. The gas flow is assumed to be isothermal, quasi-steady, and one-dimensional. The pig is modeled as a cylinder. For the cases considered, the pig may either obstruct the pipe and allow no gas to flow past it, or may permit gas to flow through a concentric hole in the pig, through an annulus formed by the pig and the inside of the pipe, or through both. The governing equations which describe the motion of the pig and the flow of gas in the pipe are developed. These equations form a system of nonlinear differential equations which must be solved numerically. Time derivatives are replaced by backward differences, and at each time step a system of nonlinear algebraic equations is solved. A FORTRAN program is included which solves for the important gas flow parameters and the position, velocity, and acceleration of the pig as it moves through the line. ii iii Such a quantitative analysis provides a basis for pig design which could be applied to regulate pig velocities or to increase gas flow rates while the pig is in the line.

The tin oxide thin films were deposited on the Corning 7059 glass by sputtering, chemical mist deposition and spin coating. The influences of different process parameters on the microstructure, electrical-optical and gas-sensing properties were studied to establish their interrelation. During the sputtering, the total pressure, the partial pressure of oxygen and substrate temperature were varied and dense thin films were obtained. The films possess (110) preferred orientation along with {011} twins. As no doping was attempted, transmittance of the films in the range of visible light is > 85 %. The lowest resistivity is ~1.4¡Ñ10-2 £[-cm. Therefore , they can be used as transparent conductive films. On the contrary, these dense films are not suitable for gas-sensor application. Chemical Mist Deposition (CMD) method employs SnCl4¡D5H2O dissolved ethanol as starting solution. The flow rate of carrier gas, substrate temperature and deposition time were varied to obtain films of different features. Below 350¢J of substrate temperature, the deposition films are amorphous, while SnO2 crystalline films are obtained when temperature above 400¢J. As (110) preferred orientation increases with deposition temperature. The films transmittance decrease with increasing thickness as well as porosity and maintains at a level around 85 %. The lowest resistivity of undoped films is 1.2¡Ñ10-2 £[-cm. These characteristic render them as good transparent conductive films. As dense films with negligible porosity, the sensitivity for CO gas detection of these films is less than 2 when thickness is less than 100 nm and can not serve as a decent gas sensor. Porous films were obtained using spin-coating. No preferred orientation is found in these films. As porosity is high, the optical transmittance and electrical conductance are low. SnCl4¡D5H2O dissolve in DI water (with NH3(aq) added for promotion of hydrolysis) was used as starting solution. The starting solution contains large amounts of electrolytes of NH4+ and Cl-, and the resultant films contain large amounts of small cracks with low surface area. The sensitivity of CO gas is 3~4. If the electrolytes are eliminated before deposition, finer cracks are obtained in the films with increased surface area, and the sensitivity for CO gas detection can reach 12.9. Meso-structure precipitates were obtained when the starting solution was mixed with CTAB(aq). The resultant solution yield films of high surface area and sensitivity for CO gas can reach 16.1, rendering them as good gas sensors.

Thesis (LL.M. ) -- University of Alberta, 2010. / "A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Laws, Faculty of Law, University of Alberta. Title from pdf file main screen (viewed on February 11, 2010) Includes bibliographical references.

Thesis (Ph. D.)--West Virginia University, 2003. / Title from document title page. Document formatted into pages; contains xxii, 139 p. : ill. Includes abstract. Includes bibliographical references (p. 102-104).

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