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    • Thesis


    • Authors: Kopkalli, Yasemin (2006)

    • There is great interest in identifying and characterizing new surfactants with predictable solubilization and reconstitution characteristics for use in membrane research. Among them, Triton X-100 and octyl glucoside (OG) are the best-studied surfactants. However, no physical data is available characterizing the interactions of two non-ionic pyrrolidinone surfactants, N-(2-ethylhexyl)-2-pyrrolidinone (C2,6P) and N-octyl-2-pyrrolidinone (C8P), with lipid bilayers. In the present study, their physical effects on dimyristoylphosphatidylcholine small unilamellar vesicles (DMPC SUVs) above the lipid phase transition temperature are described using surface tension, fluorescence spectroscopy,...

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    • Thesis


    • Authors: Ulrich, James L (2005)

    • Motivated by a desire to test the security of the pubic key exchange protocol of I. Anshel, M. Anshel, and D. Goldfeld, (“An Algebraic Method for Public-Key Cryptography”, Mathematical Research Letters, vol. 6, pp. 1-5, 1999), we study algorithmic approaches to the simple commutator decision and promise problems (SCDP/SCPP) for the braid groups Bn. We take as our point of departure a seminal paper of O. Ore, (“Some Remarks on Commutators”, Proceedings of the American Mathematical Society, Vol. 2, No. 2, pp.307-314, 1951), which studies the SCPP for the symmetric groups. Our results build on the work of H. Cejtin and I. Rivin, (“A Property of Alternating Groups”, arXiv:math.GR/0303036...

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    • Thesis


    • Authors: Yu, Lingtao (2006)

    • Nanomaterials and nanoscale engineering wil play a critical role in the future of materials science, electronic technology and biotechnology. Inspired by nature, biomineralization is becoming an imp ortant technique to synthesize inorganic nanomaterials. This is a recognization process which is based on molecular complementarity between protein and specific crystal phases of metals or semiconductors. This approach can produce nanomaterials with precis ely controled morphology and crystaline structure under mild conditions. In this dissertation, sequenced histidine –rich peptides are used to fabricate morphology -controled nanocrystals on the surface. Various inorganic nanocrystals are...