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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.
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Showing 41 to 50 of 3657 (0.041 seconds)Spelling suggestions: "subject:"crystal"" "subject:"krystal""
| 41 |
Hydrodynamics of liquid encapsulation Czochralski crystal growthHicks, T. W. January 1988 (has links)
No description available.
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| 42 |
High energy electron diffraction from transverse stacking faultsJesson, D. E. January 1987 (has links)
No description available.
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| 43 |
Effects of ultraviolet and visible radiation on the insecticidal activity of the spores and crystals of Bacillus thuringiensisMitchell, Judith K. January 1990 (has links)
No description available.
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| 44 |
Solid-state chemistry of acridizinium and pyridinium saltsWang, Wang-Nang January 1987 (has links)
The work described in this thesis is concerned with the study of extending known crystal engineering principles to the influence of anions on crystal packing and reactivity. Some features arising from this study include: single-crystal to single-crystal reactivity; an important role of water in modifying the course of the reaction; the movement of water associated with the reacting pair of acridizinium cations during the photodimerization process; possible martensitic phase transition from the acridizinium bromide monohydrate P2<SUB>1</SUB>/a isomer to P1 isomer; phase transformations accompanying dimerization; the generation of crystalline solutions incorporating two or more anions and the modification of structure as a function of anion with consequential differences in reactivity. Results from both theoretical approach and experimental studies on acridizinium and 9-methylacridizinium salts suggest that ionic molecules pack preferrentially in a centrosymmetric manner favoured by both the geometrical close-packing model and Coulombic energy. Crystal morphologies are modified by varying anions. The morphological changes can be correlated consistently with the size and shape of the anion, and the electronic property of the anion also contributes to this change (e.g. the formation of hydrogen bond). Molecular packing arrangements (structural relationship) of these compounds can also be correlated consistently with the size, shape and the electronic properties of the anions. There is a good correlation between the photoreactivity and the crystal structure. The relative conversion rate, assuming that the excimer formation is the rate determining step, can be predicted reasonably well from the ground state structure of the monomer pair. A possible mechanism for the photodimerization of acridizinium and 9-methylacridizinium salts was proposed based on the results from the electrochemical, spectroscopic and electron resonance studies.
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| 45 |
Structure and phase transitions of some crystalline and liquid crystalline aromatic polyestersHanna, Simon January 1988 (has links)
No description available.
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| 46 |
Crystallographic studies of intermediate states of haemoglobinLuisi, B. F. January 1986 (has links)
No description available.
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| 47 |
SELECTIVE FINES DESTRUCTION IN BATCH CRYSTALLIZATIONZipp, Gail Lea, 1959- January 1986 (has links)
No description available.
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| 48 |
Spectroscopy of Cr'3'+ ions in some garnet crystalsMarshall, A. January 1988 (has links)
No description available.
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| 49 |
Investigations of Sayre's equationShiono, Masaaki January 1989 (has links)
No description available.
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| 50 |
Synthesis and properties of biphenylene anologues of biphenyl mesogensRees, Mark January 1990 (has links)
No description available.
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