Browsing Physics and Astronomy electronic theses and dissertations (MU) by Thesis Semester "2011 Fall"
Now showing items 1-5 of 5
-
Extremely extended dust shells around evolved intermediate mass stars: probing mass loss histories, thermal pulses and stellar evolution
(University of Missouri--Columbia, 2011)Intermediate mass stars ($0.8 - 8 solar masses), at the asymptotic giant branch phase (AGB) suffer intensive mass loss, which leads to the formation of a circumstellar shell (s) of gas and dust in their circumstellar ... -
Ion dependent stability of RNA three-way junction and DNA triple helices
(University of Missouri--Columbia, 2011)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Nucleic acids are critical for regulation of gene expression. Because nucleic acid molecules are highly charged, the folding of nucleic acids involves ... -
Percolative effects in quantum critical systems : how magnetic clusters shape the response at low temperatures
(University of Missouri--Columbia, 2011)We have investigated the link between cluster morphology and non-Fermi liquid behavior in the bulk properties of Ce(Ru1-xFex)2Ge2, a prototypical quantum critical system that has been driven to criticality through chemical ... -
Using infrared observations of circumstellar dust around evolved stars to test dust formation hypothesis
(University of Missouri--Columbia, 2011)Asymptotic Giant Branch (AGB) stars are evolved, low to intermediate mass (0.8-8M[circle dot operator}) stars. These stars lose a significant fraction of their mass through stellar pulsation. As a result, they are surrounded ... -
X-ray diffraction studies on the Pb/Si(111) system
(University of Missouri--Columbia, 2011)This dissertation investigates the structure of the Pb wetting layer on the Si(111)7x7 using X-ray diffraction techniques. It was found that the wetting layer shows a surprising kinetic behavior within the structure over ...