UNT Theses and Dissertations - 6 Matching Results

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Spectroscopic and Physical Effects of Highly Polar Groups

Description: Since the development of the understanding that the electron distribution within a molecule is chiefly responsible for its properties and behavior, factors influencing this charge distribution have been of interest to scientists. The chemical reactivity of a molecule, the physical properties, and to a large extent, structure and geometry, are all functions of the electron distribution. This study examines the issue of electronic structure from two points of view, each of them focussing on a spe… more
Date: December 1981
Creator: Schander, Judith Turner
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Picosecond Spectroscopy of Rhodamine B

Description: A series of picosecond excite-probe experiments was performed on various concentrations of aqueous and ethanolic solutions of rhodamine B in order to determine the existence of dimerization in those solutions. The goals of the research presented in this dissertation were twofold. Initially, various techniques of time-resolved spectroscopy were to be employed to further characterize the ground and excited-state molecular properties of the aqueous RB dimer. The information obtained, and the techn… more
Date: December 1981
Creator: Clark, James Burton
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Poly(ADP-ribose) Synthesis as a Function of Growth and DNA Fragmentation

Description: This work examines the synthesis of poly(ADP-ribose) in normal and SV40-transformed monolayer cultures of 3T3 cells as a function of growth and DNA fragmentation. A review of the relevant literature is given in the introduction of this work. Poly(ADP-ribose) synthesis has been implicated in transcription, replication, repair, differentiation and regulation of cell growth. The results of this study suggest that poly(ADP-ribose) synthesis is involved in some aspect of cell-growth control and DNA … more
Date: December 1981
Creator: Levi, Viktorya
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Synthesis of Aziridine Analogues of Pyrethroids

Description: Rules which correlate structure and insecticidal activity of pyrethroids have evolved over the last thirty years from the results obtained in the testing of various synthetic pyrethroids. The major portion of these rules have dealt either with the development of new alcohol moieties or variations in the unsaturated side chain of the cyclopropane ring. There has been very little work done concerning modifications of the cyclopropane ring. This study was initiated to discover the affect of substi… more
Date: May 1981
Creator: Sheppard, Rex Gerald
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Isolation, Physical and Chemical Characterization of Lecithin:Cholesterol Acyltransferase from Human Plasma

Description: The physiological role of LCAT has been the subject of a number of recent articles (Glomset, 1979; Nilsson-Ehle et al., 1980). According to most current theories, the enzyme functions in combination with high-density lipoproteins in the reverse cholesterol transport pathway which presumably returns peripheral cholesterol to the liver where cholesterol catabolism takes place. Despite the exciting potential for studies on the catalytic function and the nature of the enzyme-substrate complex, the … more
Date: December 1981
Creator: Chong, Kui Song
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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