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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
81

The calculation of proton chemical shifts in aromatics, carbonitriles, acetylenes and hetero-aromatics

Reid, Matthew January 2002 (has links)
No description available.
82

Single crystal X-ray diffraction studies on small, medium and large molecules

Butterworth, Susanna January 1996 (has links)
Chapter 1. Production of crystals for diffraction analysis would be assisted by the devising of a set of rules which, given molecular formula, could predict crystal formation conditions. By studying trends in structural properties of a group of closely related simple molecules, deductions could be drawn which could then be applied more generally. Chalcone derivatives with minor substituent differences were recrystallised. X-ray diffraction data collected and the structures solved and refined. Additionally, NMR and UV studies were performed, investigating an observed dimerisation reaction. Chapter 2. Discovery of peptide hormones and neurotransmitters has stimulated the study of structure-activity relationships, although the structure of these molecules is often poorly defined. Proctolin, a linear pentapeptide, is a neurotransmitter in insects. Crystallisation was attempted, with the aim of deducing the active conformation structure, thereby assisting in design of small molecule analogues for use as non-cholinergic pesticides. No diffraction was observed from the crystals produced. Chapter 3. Glucosamine 6-phosphate synthase is an N-terminal nucleophile amidotransferase catalysing the first step in the hexosamine pathway, from which all amino-sugar containing macromolecules are derived. Structure determination of each of two subdomains was attempted. In one case, pseudo-symmetry appeared to obstruct structure solution. The symmetry has subsequently been understood and the structure obtained. Crystals of the second domain are rotationally disordered. Chapters 4 and 5. Recent advances in macromolecular crystallographic techniques have facilitated the collection of an increasing number of high quality, atomic resolution data sets. Methods for refinement, previously limited to small molecule structures, have increasing relevance for proteins. Atomic resolution refinements using these evolving protocols have been performed on two small proteins, rubredoxin from Desulfovibrio vulgaris and the protein G immunoglobulin-binding domain. Appropriate treatment of the solvent structure in a protein crystal and the benefit to be gained by using sharpened density maps during refinement were investigated.
83

Intermolecular potentials from differential cross section measurements.

Kalos, Ferenc. January 1971 (has links)
No description available.
84

Indirect conductivity detection in size exclusion chromotography of small molecules /

Sanchez, Vicente, January 1990 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1990. / Vita. Abstract. Includes bibliographical references (leaves 69-70). Also available via the Internet.
85

Applications of the quantum theory of atoms in molecules to chemical and biochemical problems /

Matta, Cherif. Bader, Richard F. W., January 1900 (has links)
Thesis (Ph.D.)--McMaster University, 2002. / Advisor: Richard Bader. Includes bibliographical references (p.284-300). Also available via World Wide Web.
86

Applications of the quantum theory of atoms in molecules to chemical and biochemical problems /

Matta, Cherif. Bader, Richard F. W., January 1900 (has links)
Thesis (Ph.D.)--McMaster University, 2002. / Advisor: Richard Bader. Includes bibliographical references (p.284-300). Also available via World Wide Web.
87

Developmental expression pattern of junctional adhesion molecule-C and correlation of its expression in junctional adhesion molecule-A null mice

Ghosh, Ananya. January 2008 (has links)
Thesis (M.S.)--University of Delaware, 2008. / Principal faculty advisor: Ulhas Naik, Dept. of Biological Sciences. Includes bibliographical references.
88

Molecular analysis of Pcp2/L7 3'UTR and its putative binding proteins Unr and Vps36 /

Zhang, Rui. January 2008 (has links)
Thesis (Ph. D.)--Ohio State University, 2008. / Title from first page of PDF file. Includes bibliographical references (p. 176-190).
89

Interaction specificities of some small molecules and proteins with DNA

Scofield, Rolfe Eaton, January 1973 (has links)
Thesis--University of Florida. / Description based on print version record. Typescript. Vita. Bibliography: leaves 120-125.
90

The interaction between vibration and rotation for symmetrical molecules

Johnston, Manfred, Dennison, David Mathias, January 1900 (has links)
Thesis (Ph. D.)--University of Michigan, 1936. / Cover title. By Manfred Johnston and David M. Dennison. "Reprinted from the Physical review, vol. 48, no. 11, December 1, 1935."

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