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Relevant bibliographies by topics / Polymorphism (crystallography)

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Dissertations / Theses

Academic literature on the topic 'Polymorphism (crystallography)'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 September 2023

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Dissertations / Theses on the topic "Polymorphism (crystallography)"

1

Hammond, Robert Paul. "The structural chemistry of the stuffed tridymites A[BPO4] (A=Na; Ag; b=Be, Co, Zn) and A[BCO4] (A=Na, K; B=Al, Fe; C=Si, Ge) /." *McMaster only, 1996.

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2

Donahue, Michael J. "Polymorph characterization and control /." View online ; access limited to URI, 2007. http://0-digitalcommons.uri.edu.helin.uri.edu/dissertations/AAI3276988.

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Wells, David F. "Experimental and computational study of the detection and stability of polymorphs using PXRD, DSC and solubility /." View online ; access limited to URI, 2008. http://0-digitalcommons.uri.edu.helin.uri.edu/dissertations/AAI3314449.

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4

Chavez, Krystle J. "Crystallization of pseudopolymorphic forms of sodium naproxen in mixed solvent systems." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29759.

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Thesis (Ph.D)--Chemical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Rousseau, Ronald; Committee Member: Meredith, Carson; Committee Member: Prausnitz, Mark; Committee Member: Teja, Amyn; Committee Member: Wilkinson, Angus. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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5

Strachan, Clare, and n/a. "Spectroscopic investigation and quantitation of polymorphism and crystallinity of pharmaceutical compounds." University of Otago. School of Pharmacy, 2005. http://adt.otago.ac.nz./public/adt-NZDU20070427.141108.

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Spectroscopy is increasingly used to investigate and monitor the solid state forms of pharmaceutical materials and products. Spectroscopy�s speed, nondestructive sampling, compatibility with fibre optics and safety also make it attractive for in-line monitoring. In this thesis, the spectroscopic techniques Fourier transform Raman spectroscopy, terahertz pulsed spectroscopy and second harmonic generation were used to characterise and quantify polymorphism and crystallinity of pharmaceutical compounds. Where possible, the multivariate analysis technique partial least squares was used for quant

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6

Tian, Fang, and n/a. "Towards a deeper understanding of the polymorphic conversion of carbamazepine in aqueous suspension." University of Otago. School of Pharmacy, 2007. http://adt.otago.ac.nz./public/adt-NZDU20070601.135438.

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Polymorphism can influence every aspect of the properties of a solid including the shelf life, dissolution rate, solubility, formulation properties and processing properties of a solid drug. A deeper understanding of polymorphism and related solid state properties would ensure an improved quality of the materials used throughout drug preparation, dosage form formulation and clinical trials. Therefore, determination of the existence of polymorphs and pseudopolymorphs, characterization of different solid state forms and their respective properties, and controlling the existing form in the result

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7

Johnstone, Russell D. L. "Effect of high pressure on structural oddities." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/3784.

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This thesis describes the effect of pressure on crystal structures that are in some way unusual. The aim was to investigate whether pressure could be used to force these ‘structural oddities’ to conform to more conventional behaviour. In many cases pressure-induced phase transitions were observed, and the driving forces of these are considered. L-serine monohydrate crystallises with layers of hydrogen bonded serine molecules. Layers are linked together by H-bonds from the donor atoms of water molecules. The orientation of the water molecules between the layers is uncommon for other layered hyd

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8

Cooper, Brian J. "The investigation of the optical properties of polytypic minerals." Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/53682.

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A new approach to the investigation of the optical properties of polytypic minerals that combines spindle stage techniques, X-ray diffraction methods, electron microprobe analysis, and dielectric tensor calculations has been developed and applied to zinc sulfides and chloritoids. For the first time, X—ray diffraction studies of natural anisotropic zinc sulfides have documented the simultaneous occurrence of twinning and stacking disorder along more than one of the four symmetry equivalent <111> directions of sphalerite. Precession photographs of optically anisotropic zinc sulfides are charact

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9

Zelaya, Carlos A. "6,6’-Dimethoxygossypol: Molecular Structure, Crystal Polymorphism, and Solvate Formation." ScholarWorks@UNO, 2011. http://scholarworks.uno.edu/td/136.

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6,6’-Dimethoxygossypol (DMG) is a natural product of the cotton variety Gossypium barbadense and a derivative of gossypol. Gossypol has been shown to form an abundant number of clathrates with a large variety of compounds. One of the primary reasons why gossypol can form clathrates has been because of its ability to from extensive hydrogen bonding networks due to its hydroxyl and aldehyde functional groups. Prior to this work, the only known solvate that DMG formed was with acetic acid. DMG has methoxy groups substituted at two hydroxyl positions, and consequently there is a decrease in its ab

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10

Bayés-García, Laura. "Polymorphism and Solid State Miscibility of Triacylglycerols. Application to Food Authentication." Doctoral thesis, Universitat de Barcelona, 2013. http://hdl.handle.net/10803/129313.

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Esta tesis se basa fundamentalmente en el estudio in situ del polimorfismo de triacilgliceroles (TAGs) mayoritarios de aceites y grasas alimentarios, la determinación del comportamiento de fases de algunas de sus mezclas binarias, y la aplicación del polimorfismo como herramienta para la autentificación de productos alimentarios. Se ha llevado a cabo la caracterización polimórfica de los TAGs POP, OPO, POO, POL, SOO, OOO y OOL, básicamente utilizando una combinación de calorimetría diferencial de barrido y difracción de rayos X con radiación sincrotrón (SAXD y WAXD). Así, se han podido monito

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