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181	Determination of applied stresses in rails using the acoustoelastic effect of ultrasonic waves Gokhale, Shailesh Ashok 10 October 2008 (has links) This research develops a procedure to determine the applied stresses in rails using the acoustoelastic effect of ultrasonic waves. Acoustoelasticity is defined as the stress dependency of ultrasonic wave speed or wave polarization. Analytical models are developed that predict the acoustoelastic effect for longitudinal waves, shear waves, Lamb waves, and Rayleigh waves. Using a programming tool, a numerical simulation of the models is generated to obtain the stress dependent curves of wave velocity and polarization of the various ultrasonic waves propagating in rail steel. A comparison of the sensitivity of the acoustoelastic effect is made to determine the feasibility of ultrasonic waves for further study. Rayleigh waves are found to be most sensitive to stress change. Rayleigh waves are generated using ultrasonic transducer and detected using a laser Doppler vibrometer (LDV). The LDV measures the in-plane and out-of-plane velocities. Polarization is defined as the ratio of in-plane and out-of-plane displacements. Initially, polarization is determined for the specimen in unstressed condition. Thereafter, the rail specimen is stressed in a compression testing machine, the experiment repeated, and the polarization determined. Thus, Rayleigh wave polarization is obtained as a function of applied stress. Finally, the change in polarization obtained experimentally is compared with the analytical model. Acoustoelasticity Stress free temperature
182	Computational and infrared studies of the structure and behavior of spontaneously adsorbed amine reagents on the high-temperature superconductor yttrium-barium-copper oxide / Wells, Cyndi Ann, January 1999 (has links) Thesis (Ph. D.)--University of Texas at Austin, 1999. / Vita. Includes bibliographical references (leaves 174-175). Available also in a digital version from Dissertation Abstracts.
183	Monitoring river restoration using fiber optic temperature measurements in a modeling framework / Huff, Julie A. January 1900 (has links) Thesis (M.S.)--Oregon State University, 2010. / Printout. Includes bibliographical references (leaves 114-123). Also available on the World Wide Web. Water temperature Stream restoration
184	Effects of influenza vaccination and temperature screening of day care children a mathematical model / Wong, Laura Elizabeth, January 2009 (has links) Thesis (M.P.H.)--University of Hong Kong, 2009. / Includes bibliographical references (p. 63-67). Influenza vaccines. Body temperature.
185	I. Molecular simulations of buckyball fullerenes. II. Quantum chemistry studies on high-Tc superconductors Guo, Yuejin. Goddard, William A., January 1900 (has links) Thesis (Ph. D.)--California Institute of Technology, 1992. UM #92-32, 184. / Advisor names found in the Acknowledgments pages of the thesis. Title from home page. Viewed 02/01/2010. Includes bibliographical references.
186	The influence of termperature on the formation of judgments in lifted weight experiments Ide, Archie Lewis. January 1919 (has links) Thesis (Ph. D.)--University of Pennsylvania, 1919. Judgment (Logic) Temperature
187	Comparative thermal biology and associated niche differentiation among the five-lined skinks Watson, Charles Matthew. January 2008 (has links) Thesis (Ph.D.) -- University of Texas at Arlington, 2008. Scincus Temperature Biodiversity.
188	Studies on the effect of the admixture of mineral soil upon the thermal conditions of cultivated peat land Pessi, Yrjö. January 1956 (has links) Thesis--University of Helsinki. / Bibliography: p. [85]-87. Soil temperature. Peat
189	Mathematical model of air temperatures for computer analysis / Notestine, James Carroll. January 1964 (has links) Thesis (M.S.)--Ohio State University, 1964. / Includes bibliographical references. Available online via OhioLINK's ETD Center
190	Processing of doped YBa₂Cu₃0₇₋x melt textured bulk single crystals for enhanced superconducting properties / Sofie, Stephen W. January 2002 (has links) Thesis (Ph. D.)--University of Washington, 2002. / Vita. Includes bibliographical references (leaves 90-98). High temperature superconductors.

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