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Performance studies of a thyristor controlled reactor for arc furnace compensation using computer and laboratory modelsTang, C. K. K. January 1987 (has links)
No description available.
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Instabilities in the operation of low trigger voltage vacuum switchesBhardwaj, J. K. January 1986 (has links)
No description available.
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103 |
A new winding configuration for the doubly salient 8/6 switched reluctance machineAshour, Hamdy Ahmed January 1999 (has links)
No description available.
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Silicon carbide power devicesWang, Jue January 2000 (has links)
No description available.
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Development of the Voltage-Gated Sodium and Potassium Currents Underlying Excitability in Zebrafish Skeletal MuscleCoutts, Christopher 11 1900 (has links)
Excitable cells display dynamically regulated changes in the properties of ion currents during development. These changes are crucial for the proper maturation of cellular excitability, and therefore have the potential to affect more sophisticated functions, including neural circuits, movements, and behaviors. Zebrafish skeletal muscle is an excellent model for studying the development of ion channels and their contributions to excitability. They possess distinguishable populations of red and white muscle fibers, whose biological functions are well understood. The main objectives of this thesis were:
(1) To characterize the development of muscle excitability by examining properties of voltage-gated sodium and potassium currents expressed in embryonic and larval zebrafish during the first week of development.
(2) To elucidate some of the mechanisms by which ion current development might be controlled, beginning with activity-dependent and phosphorylation-dependent mechanisms.
These objectives were approached using whole-cell electrophysiological techniques to examine the voltage-dependent and kinetic properties of voltage-gated sodium and potassium currents in intact zebrafish skeletal muscle preparations. Mutant sofa potato zebrafish, which lack functional nicotinic acetylcholine receptors, were then utilized to determine whether synaptic activity at the neuromuscular junction is required for proper ion current development. Finally, protein kinases were activated pharmacologically in order to determine whether they were able to modulate ion currents during development.
The results revealed that properties of ion currents undergo a developmental progression, including increased current density, accelerated kinetics, and shifts in voltage-dependence; these developments correlated well with the maturation of muscle action potentials and the movements and behaviors they mediate. Sofa potato mutants were found to be deficient in certain aspects of ion current development, but other aspects appeared to be unaffected by a lack of synaptic activity. Protein kinase A demonstrated the ability to drastically reduce potassium current density; however the effects of PKA were similar at all developmental stages.
Overall, these findings provide novel insight into the roles played by voltage-gated currents during the development of excitability in zebrafish skeletal muscle, and expand the rapidly growing body of knowledge about ion channel function in general. / Physiology, Cell & Developmental Biology
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Recursive receiver down-converters with multiband feedback and gain-reuse for low-power applicationsHan, Junghwan, January 1900 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2007. / Vita. Includes bibliographical references.
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107 |
An ultra low power frequency reference for timekeeping applications /Oporta, Hector Ivan. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2009. / Printout. Includes bibliographical references (leaf 31). Also available on the World Wide Web.
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108 |
Electronic voltage regulator technology for rural electrification /Serdyn, J. J. January 2008 (has links)
Thesis (MScIng)--University of Stellenbosch, 2008. / Bibliography. Also available via the Internet.
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109 |
TuneChip post-silicon tuning of dual-vdd designs /Bijansky, Stephen. January 1900 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2008. / Vita. Includes bibliographical references.
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Voltage collapse prediction for interconnected power systemsAl-Hinai, Amer. January 2000 (has links)
Thesis (M.S.)--West Virginia University, 2000. / Title from document title page. Document formatted into pages; contains xii, 94 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 66-67).
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