5 Matching Results

Search Results

Results: 1 - 5
open access

Gas phase thermochemistry of organogermanium compounds

Description: A variety of silyl- and alkyl-germylene precursors have been synthesized and subsequently pyrolyzed in the gas phase. Arrhenius parameters were obtained employing a pulsed-stirred flow reactor for these unimolecular decompositions. These precursors are divided into two major categories by mechanism of germylene extrusion: {alpha}-elimination precursors and germylacetylenes. The extrusion of germylenes from germylacetylene precursors is of primary interest. A mechanism is proposed employing a ge… more
Date: December 7, 1993
Creator: Engel, J. P.
Partner: UNT Libraries Government Documents Department
open access

Implementation of the Immersed Boundary Method in the Weather Research and Forecasting model

Description: Accurate simulations of atmospheric boundary layer flow are vital for predicting dispersion of contaminant releases, particularly in densely populated urban regions where first responders must react within minutes and the consequences of forecast errors are potentially disastrous. Current mesoscale models do not account for urban effects, and conversely urban scale models do not account for mesoscale weather features or atmospheric physics. The ultimate goal of this research is to develop and i… more
Date: December 7, 2006
Creator: Lundquist, K A
Partner: UNT Libraries Government Documents Department
open access

Topics in electroweak baryogenesis: The sphaleron and t-violation

Description: Assuming that beyond the standard model physics can be parametrized in terms of high dimensional operators, we examine their effects on the energy of the sphaleron and the classical solution of the gauge and Higgs fields. In the absence of fermions, all of the six dimension 6 operators which are SU(2) symmetric have a small effect when calculated perturbatively. However, calculated non-perturbatively, one of the operators alters the boundary conditions of the equations of motion of the Higgs an… more
Date: December 7, 1993
Creator: SeungKoog, L.
Partner: UNT Libraries Government Documents Department
open access

Fundamental studies of hydrogen interaction with supported meta and bimetallic catalysts

Description: The thesis is divided into 3 parts: interaction of H with silica supported Ru catalysts (high pressure in situ NMR), in situ NMR study of H interaction with supported Ru-group IB bimetallic catalysts, and in-situ NMR study of H effects on silica-supported Pt, Rh and Ru catalysts.
Date: December 7, 1993
Creator: Bhatia, S.
Partner: UNT Libraries Government Documents Department
open access

Terfenol: A study of the phase equilibrium diagram and the solidification process

Description: Terfenol is a rare earth-iron alloy that was first developed at the Naval Ordinance Laboratory because of its rare magnetostrictive properties. Terfenol is composed of terbium and dysprosium combined with iron in a composition Tb{sub x}Dy{sub 1{minus}x}Fe{sub 2}, where x{approximately}0.3. The objective of this work was to determine the growth characteristics of Terfenol and its dependence on solidification rate, temperature gradient, and stoichiometry. Specific goals of this work were to verif… more
Date: December 7, 1993
Creator: Anderson, M.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen