955 resultados para Kerr-Newman


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[First game UM wore numbers on front of jersey]]

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(crop from 1932 team photo)

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Front Row, Left to Right: Thomas DeMassa, James Sytek, Jack Zachary, Robert Wojcik, Jerry Leith, Harry Newman, Jr., Dave Brown, James McPherson, Alvin Groce, Grant Walls, John Halstead, Joseph Brefeld, Richard Syring, Phil Barger, Wilfrid Grein, John Galarneault.

Second Row: Coach Don Dufek, John Batsakes, Paul Poulos, Fred Olm, Dennis Fitzgerald, Jim Byers, Doug Oppman, Robert Ptacek, John Herrnstein, Gary Prahst, Walt Johnson, Gerald Marciniak, Willie Smith, Anthony Rio, Michael Dupay, Mike Fillichio, Bob Johnson, Jim Dickey, Coach Matt Patanelli.

Third Row: Coach Jack Blott, Coach Bob Hollway, James Gray, Maynard Stetten, Gordon Morrow, Eugene Sisinyak, Guy Curtis, B. Lee Hall, Darrell Harper, Jared Bushong, Alex Callahan, Wesley Maki, Donald Kolcheff, Fred Julian, George Genyk, Gerald Smith, Robert Swanson, Willerfred Wilson, Erwin Crownley, Coach Ben Oosterbaan.

Back Row: Coach Wally Weber, Reid Bushong, Gary McNitt, Bill Stein, Tom Jobson, Donald Hannah, Gary Kane, John Walker, Willard Hildebrand, Paul Raeder, Darrell Thorpe, Daniel Snow, Thomas Kerr, Lovell Farris, David Palomaki, Bradley Myers, Donald Deskins, Arthur Lazik, John Spidel, Keith Cowan, Henry Stuart, Coach "Bump" Elliott.

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Includes index and bibliographical references.

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We propose the use of a dispersive medium with a negative nonlinear refractive-index coefficient as a way to compensate for the dispersion and the nonlinear effects resulting from pulse propagation in an optical fiber. The undoing of pulse interaction might allow for increased bit rates.

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N-vinylcarbazole was polymerised using the free radical catalyst (azo-bisisobutyronitrile) and cationic catalysts (boron-trifluoride etherate and aluminium chloride). The polymers produced were characterised by molecular weight measurements and powder x-ray diffraction. The tacticity of the polymer samples was determined using proton and carbon-13 nuclear magnetic resonance spectroscopy. Measurements of their static dielectric permittivity and electro-optical birefringence (Kerr effect) in solution in 1,4-dioxane were carried out over a range of temperatures. The magnitudes of the dipole moments and Kerr constants were found to vary with changes in the tacticity of poly(N-vinylcarbazole). The results of these measurements support the view that the stereostructure of poly(N-vinylcarbazole) is sensitive to the mechanism of polymerisation. These results, together with proton and carbon-13 N.M.R. data, are discussed in terms of the possible conformations of the polymer chains and the relative orientation of the bulky carbazole side groups. The dielectric and molecular Kerr effect studies have also been carried out on complexes formed between 2,4,7-trinitro-9-fluorenone (TNF) and different stereoregular forms of poly(N-vinylcarbazole) in solution in 1,4-dioxane. The differences in the molar Kerr constants between pure (uncomplexed) and complexed poly(N-vinylcarbazole) samples were attributed to changes in optical anisotropy and dipole moments. A molecular modelling computer program Desktop Molecular Modeller was used to examine the 3/1 helical isotactic and 2/1 helical syndiotactic forms of poly(N-vinylcarbazole). These models were used to calculate the pitch distances of helices and the results were interpreted in terms of van der Waal's radii on TNF. This study indicated that the pitch distance in 3/1 isotactic helices was large enough to accommodate the bulky TNF molecules to form sandwich type charge transfer complexes whereas the pitch distance in syndiotactic poly(N-vinylcarbazole) was smaller and would not allow a similar type of complex formation.

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A novel Kerr cell of greater optical path length and temperature stability has been designed and built. The Kerr effect experimental has been substantially automated using an Apple IIe computer. Software has been written allowing the computer to partially control the Kerr effect equipment and to acquire and analyse the relevant data.The temperature dependent electro-optic Kerr effect of 2-methyl-4-nitroaniline, p-nitroaniline, nitrobenzene, aniline, and toluene as solutions in 1, 4-dioxane has been studied. The Kerr effect measurements combined with dipole moment, depolarisation ratio, dielectric, and electronic polarisation measurements have been used to calculate the first hyperpolarisability of the solute.Although first hyperpolarisabilities for the compounds studied have been measured in various physical states using a variety of experimental techniques, it is gratifying to find that the values presented in this thesis have a linear relationship with values reported by other workers.